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master
unknown 2015-11-20 04:08:53 -08:00
parent 9dd6bc8c02
commit 80966b7fb8
66 changed files with 13955 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.gitignore vendored
View File

@ -1,3 +1,4 @@
AwfulCrateBox/
Classifieds/
# Windows image file caches
@ -30,6 +31,7 @@ $RECYCLE.BIN/
# Icon must end with two \r
Icon
# Thumbnails
._*

11
AHK/rapid_t.ahk Normal file
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@ -0,0 +1,11 @@
#NoEnv ; Recommended for performance and compatibility with future AutoHotkey releases.
SendMode Input ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir% ; Ensures a consistent starting directory.
+T::
While GetKeyState("t", "P")
{
Click WheelDown
Sleep 20
}
Return

1
Decorner/decorner.py
View File

@ -3,6 +3,7 @@ import sys
imagename = sys.argv[1]
image = Image.open(imagename)
image = image.convert('RGBA')
w = image.size[0] - 1
h = image.size[1] - 1
for i in range(5):

3
ICO/icoconvert.py
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@ -64,7 +64,8 @@
import binascii
import sys
from PIL import Image
import os
print(os.getcwd())
try:
INPUTFILE = sys.argv[1]
except:

11
Passwordy/passwordy.py
View File

@ -33,7 +33,7 @@ HELP_SENTENCE = '''
---------------------------------------------------------------
'''[1:-1] % (DEFAULT_SENTENCE)
def make_password(length=None, allowpunctuation=False, allowdigits=False):
def make_password(length=None, allowpunctuation=False, allowdigits=False, digits_only=False, binary=False):
'''
Returns a string of length `length` consisting of a random selection
of uppercase and lowercase letters, as well as punctuation and digits
@ -42,11 +42,16 @@ def make_password(length=None, allowpunctuation=False, allowdigits=False):
if length is None:
length = DEFAULT_LENGTH
if digits_only is False and binary is False:
s = string.ascii_letters
if allowpunctuation is True:
s += string.punctuation
if allowdigits is True:
s += string.digits
elif digits_only:
s = string.digits
elif binary:
s = '01'
password = ''.join([random.choice(s) for x in range(length)])
return password
@ -100,7 +105,9 @@ if __name__ == '__main__':
if mode == 'password':
punc = 'p' in args
digi = 'd' in args
print(make_password(length, punc, digi))
digi_only = 'dd' in args
binary = 'b' in args
print(make_password(length, punc, digi, digi_only, binary))
elif mode == 'sentence':
if argc == 3:

25
ProjectileParabola/projectileparabola.py
View File

@ -16,7 +16,7 @@ def quadratic_formula(a, b, c):
discriminant = math.sqrt(discriminant)
b *= -1
possible = (b + discriminant, b - discriminant)
possible = [x / (2*a) for x in possible]
possible = tuple(x / (2*a) for x in possible)
return possible
def time_to_known_distance(velocity, distance, acceleration):
@ -29,9 +29,11 @@ def time_to_known_distance(velocity, distance, acceleration):
return min(possible)
def make_throw(starting_x, starting_y, starting_velocity, thrown_angle):
# We don't track smallest_y because it's going to be 0!
global smallest_x
global largest_x
global largest_y
upward = thrown_angle in range(1, 179, 1) or thrown_angle in range(-181, -359, -1)
upward = -1 if upward else 1
@ -40,13 +42,6 @@ def make_throw(starting_x, starting_y, starting_velocity, thrown_angle):
cos = math.cos(rads)
tan = math.tan(rads)
throw = {'angle': thrown_angle}
throw['horizontal_component'] = starting_velocity * cos * -upward
throw['vertical_component'] = starting_velocity * sin * upward
#print(thrown_angle, starting_velocity, throw['horizontal_component'])
throw['hang_time'] = time_to_known_distance(throw['vertical_component'], starting_y, acceleration=9.8)
throw['distance'] = throw['hang_time'] * throw['horizontal_component']
def parabola(x):
# 100% credit goes to wikipedia authors
# https://en.wikipedia.org/wiki/Projectile_motion#Parabolic_equation
@ -56,15 +51,19 @@ def make_throw(starting_x, starting_y, starting_velocity, thrown_angle):
y = left - (numerator / denominator)
return y
throw = {'angle': thrown_angle}
throw['parabola'] = parabola
throw['horizontal_component'] = starting_velocity * cos * -upward
throw['vertical_component'] = starting_velocity * sin * upward
throw['hang_time'] = time_to_known_distance(throw['vertical_component'], starting_y, acceleration=9.8)
throw['distance'] = throw['hang_time'] * throw['horizontal_component']
throw['parabola_points'] = []
#print(throw['vertical_component'], throw['hang_time'])
y = 1
x = starting_x
backwards = (thrown_angle in range(90, 270)) or (thrown_angle in range(-90, -270, -1))
while y > 0:
y = throw['parabola'](x) + starting_y
y = parabola(x) + starting_y
if y < 0:
# To keep a smooth floor of 0, rescale the active x so that
# it looks like it continues in the right direction underground.
@ -77,7 +76,7 @@ def make_throw(starting_x, starting_y, starting_velocity, thrown_angle):
if (smallest_x is None or x < smallest_x): smallest_x = math.floor(x)
if (largest_x is None or x > largest_x): largest_x = math.ceil(x)
if (largest_y is None or y > largest_y): largest_y = math.ceil(y)
throw['parabola_points'].append([int(x), int(y)])
throw['parabola_points'].append((int(x), int(y)))
if backwards:
x -= PLOT_STEP_X
else:
@ -141,12 +140,12 @@ for (index, t) in enumerate(throws):
point_a = None
for pointindex in range(len(t['parabola_points']) - 1):
if point_a is None:
point_a = t['parabola_points'][pointindex][:]
point_a = list(t['parabola_points'][pointindex])
point_a[0] = (round(point_a[0])) + abs(smallest_x) + PLOT_PAD_LEFT
point_a[1] = (largest_y - round(point_a[1]))
else:
point_a = point_b
point_b = t['parabola_points'][pointindex + 1][:]
point_b = list(t['parabola_points'][pointindex + 1])
point_b[0] = (round(point_b[0])) + abs(smallest_x) + PLOT_PAD_LEFT
point_b[1] = (largest_y - round(point_b[1]))
try:

4
ProjectileParabola/projectiles.png
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@ -1,3 +1,3 @@
version https://git-lfs.github.com/spec/v1
oid sha256:889e3073049ed9d4b0dff0414ab769fbd9cac821177446ef9b5df08d34c8e2f5
size 8042
oid sha256:67e8ae6342a582acff7c6fa0904f24c5265a0bb666b132cb505dc56728bfedf9
size 8054

10
SnudownTest/.gitignore vendored Normal file
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@ -0,0 +1,10 @@
build/
dist/
snudown.egg-info/
src/html_entities.h
*.pyc
*.so
*.so.*
*.o
/fuzzing/bin
/fuzzing/testing

4
SnudownTest/.gitmodules vendored Normal file
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@ -0,0 +1,4 @@
[submodule "gumbo_snudown"]
path = fuzzing/gumbo_snudown
url = git@github.com:JordanMilne/gumbo-parser.git
branch = markdown_validation

133
SnudownTest/Python.h Normal file
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@ -0,0 +1,133 @@
#ifndef Py_PYTHON_H
#define Py_PYTHON_H
/* Since this is a "meta-include" file, no #ifdef __cplusplus / extern "C" { */
/* Include nearly all Python header files */
#include "patchlevel.h"
#include "pyconfig.h"
#include "pymacconfig.h"
#include <limits.h>
#ifndef UCHAR_MAX
#error "Something's broken. UCHAR_MAX should be defined in limits.h."
#endif
#if UCHAR_MAX != 255
#error "Python's source code assumes C's unsigned char is an 8-bit type."
#endif
#if defined(__sgi) && defined(WITH_THREAD) && !defined(_SGI_MP_SOURCE)
#define _SGI_MP_SOURCE
#endif
#include <stdio.h>
#ifndef NULL
# error "Python.h requires that stdio.h define NULL."
#endif
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
/* For size_t? */
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
/* CAUTION: Build setups should ensure that NDEBUG is defined on the
* compiler command line when building Python in release mode; else
* assert() calls won't be removed.
*/
#include <assert.h>
#include "pyport.h"
#include "pymacro.h"
#include "pyatomic.h"
/* Debug-mode build with pymalloc implies PYMALLOC_DEBUG.
* PYMALLOC_DEBUG is in error if pymalloc is not in use.
*/
#if defined(Py_DEBUG) && defined(WITH_PYMALLOC) && !defined(PYMALLOC_DEBUG)
#define PYMALLOC_DEBUG
#endif
#if defined(PYMALLOC_DEBUG) && !defined(WITH_PYMALLOC)
#error "PYMALLOC_DEBUG requires WITH_PYMALLOC"
#endif
#include "pymath.h"
#include "pytime.h"
#include "pymem.h"
#include "object.h"
#include "objimpl.h"
#include "typeslots.h"
#include "pyhash.h"
#include "pydebug.h"
#include "bytearrayobject.h"
#include "bytesobject.h"
#include "unicodeobject.h"
#include "longobject.h"
#include "longintrepr.h"
#include "boolobject.h"
#include "floatobject.h"
#include "complexobject.h"
#include "rangeobject.h"
#include "memoryobject.h"
#include "tupleobject.h"
#include "listobject.h"
#include "dictobject.h"
#include "enumobject.h"
#include "setobject.h"
#include "methodobject.h"
#include "moduleobject.h"
#include "funcobject.h"
#include "classobject.h"
#include "fileobject.h"
#include "pycapsule.h"
#include "traceback.h"
#include "sliceobject.h"
#include "cellobject.h"
#include "iterobject.h"
#include "genobject.h"
#include "descrobject.h"
#include "warnings.h"
#include "weakrefobject.h"
#include "structseq.h"
#include "namespaceobject.h"
#include "codecs.h"
#include "pyerrors.h"
#include "pystate.h"
#include "pyarena.h"
#include "modsupport.h"
#include "pythonrun.h"
#include "ceval.h"
#include "sysmodule.h"
#include "intrcheck.h"
#include "import.h"
#include "abstract.h"
#include "bltinmodule.h"
#include "compile.h"
#include "eval.h"
#include "pyctype.h"
#include "pystrtod.h"
#include "pystrcmp.h"
#include "dtoa.h"
#include "fileutils.h"
#include "pyfpe.h"
#endif /* !Py_PYTHON_H */

12
SnudownTest/SECURITY.md Normal file
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@ -0,0 +1,12 @@
For safety reasons, whenever you add or change something in Snudown,
you should add a few test-cases that demonstrate your change and do a
fuzzing run in `/fuzzing` by running `make afl`. Make sure you have `cmake`
installed and in your `PATH`!
This uses [American Fuzzy Lop](http://lcamtuf.coredump.cx/afl/) and a
modified [Google Gumbo](https://github.com/google/gumbo-parser/) to ensure
there is no way to generate invalid HTML, and that there are no unsafe
memory operations.
See [American Fuzzy Lop](http://lcamtuf.coredump.cx/afl/)'s instructions
for your platform to get started.

487
SnudownTest/autolink.c Normal file
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@ -0,0 +1,487 @@
/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "buffer.h"
#include "autolink.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#if defined(_WIN32)
#define strncasecmp _strnicmp
#endif
int
sd_autolink_issafe(const uint8_t *link, size_t link_len)
{
static const size_t valid_uris_count = 14;
static const char *valid_uris[] = {
"http://", "https://", "ftp://", "mailto://",
"/", "git://", "steam://", "irc://", "news://", "mumble://",
"ssh://", "ircs://", "ts3server://", "#"
};
size_t i;
for (i = 0; i < valid_uris_count; ++i) {
size_t len = strlen(valid_uris[i]);
if (link_len > len &&
strncasecmp((char *)link, valid_uris[i], len) == 0 &&
(isalnum(link[len]) || link[len] == '#' || link[len] == '/' || link[len] == '?'))
return 1;
}
return 0;
}
static size_t
autolink_delim(uint8_t *data, size_t link_end, size_t max_rewind, size_t size)
{
uint8_t cclose, copen = 0;
size_t i;
for (i = 0; i < link_end; ++i)
if (data[i] == '<') {
link_end = i;
break;
}
while (link_end > 0) {
uint8_t c = data[link_end - 1];
if (c == 0)
break;
if (strchr("?!.,", c) != NULL)
link_end--;
else if (c == ';') {
size_t new_end = link_end - 2;
while (new_end > 0 && isalpha(data[new_end]))
new_end--;
if (new_end < link_end - 2 && data[new_end] == '&')
link_end = new_end;
else
link_end--;
}
else break;
}
if (link_end == 0)
return 0;
cclose = data[link_end - 1];
switch (cclose) {
case '"': copen = '"'; break;
case '\'': copen = '\''; break;
case ')': copen = '('; break;
case ']': copen = '['; break;
case '}': copen = '{'; break;
}
if (copen != 0) {
size_t closing = 0;
size_t opening = 0;
size_t i = 0;
/* Try to close the final punctuation sign in this same line;
* if we managed to close it outside of the URL, that means that it's
* not part of the URL. If it closes inside the URL, that means it
* is part of the URL.
*
* Examples:
*
* foo http://www.pokemon.com/Pikachu_(Electric) bar
* => http://www.pokemon.com/Pikachu_(Electric)
*
* foo (http://www.pokemon.com/Pikachu_(Electric)) bar
* => http://www.pokemon.com/Pikachu_(Electric)
*
* foo http://www.pokemon.com/Pikachu_(Electric)) bar
* => http://www.pokemon.com/Pikachu_(Electric))
*
* (foo http://www.pokemon.com/Pikachu_(Electric)) bar
* => foo http://www.pokemon.com/Pikachu_(Electric)
*/
while (i < link_end) {
if (data[i] == copen)
opening++;
else if (data[i] == cclose)
closing++;
i++;
}
if (closing != opening)
link_end--;
}
return link_end;
}
/*
* Checks that `prefix_char` occurs on a word boundary just before `data`,
* where `data` points to the character to search to the left of, and a word boundary
* is (currently) a whitespace character, punctuation, or the start of the string.
* Returns the length of the prefix.
*/
static int
check_reddit_autolink_prefix(
const uint8_t* data,
size_t max_rewind,
size_t max_lookbehind,
size_t size,
char prefix_char
)
{
/* Make sure this `/` is part of `/?r/` */
if (size < 2 || max_rewind < 1 || data[-1] != prefix_char)
return 0;
/* Not at the start of the buffer, no inlines to the immediate left of the `prefix_char` */
if (max_rewind > 1) {
const char boundary = data[-2];
if (boundary == '/')
return 2;
/**
* Here's where our lack of unicode-awareness bites us. We don't correctly
* match punctuation / whitespace characters for the boundary, because we
* reject valid cases like "。r/example" (note the fullwidth period.)
*
* A better implementation might try to rewind over bytes with the 8th bit set, try
* to decode them to a valid codepoint, then do a unicode-aware check on the codepoint.
*/
else if (ispunct(boundary) || isspace(boundary))
return 1;
else
return 0;
} else if (max_lookbehind > 2) {
/* There's an inline element just left of the `prefix_char`, is it an escaped forward
* slash? bail out so we correctly handle stuff like "\/r/foo". This will also correctly
* allow "\\/r/foo".
*/
if (data[-2] == '/' && data[-3] == '\\')
return 0;
}
/* Must be a new-style shortlink with nothing relevant to the left of it. */
return 1;
}
static size_t
check_domain(uint8_t *data, size_t size, int allow_short)
{
size_t i, np = 0;
if (!isalnum(data[0]))
return 0;
for (i = 1; i < size - 1; ++i) {
if (data[i] == '.') np++;
else if (!isalnum(data[i]) && data[i] != '-') break;
}
if (allow_short) {
/* We don't need a valid domain in the strict sense (with
* least one dot; so just make sure it's composed of valid
* domain characters and return the length of the the valid
* sequence. */
return i;
} else {
/* a valid domain needs to have at least a dot.
* that's as far as we get */
return np ? i : 0;
}
}
size_t
sd_autolink__www(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t size,
unsigned int flags)
{
size_t link_end;
if (max_rewind > 0 && !ispunct(data[-1]) && !isspace(data[-1]))
return 0;
if (size < 4 || memcmp(data, "www.", strlen("www.")) != 0)
return 0;
link_end = check_domain(data, size, 0);
if (link_end == 0)
return 0;
while (link_end < size && !isspace(data[link_end]))
link_end++;
link_end = autolink_delim(data, link_end, max_rewind, size);
if (link_end == 0)
return 0;
bufput(link, data, link_end);
*rewind_p = 0;
return (int)link_end;
}
size_t
sd_autolink__email(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t size,
unsigned int flags)
{
size_t link_end, rewind;
int nb = 0, np = 0;
for (rewind = 0; rewind < max_rewind; ++rewind) {
uint8_t c = data[-rewind - 1];
if (c == 0)
break;
if (isalnum(c))
continue;
if (strchr(".+-_", c) != NULL)
continue;
break;
}
if (rewind == 0)
return 0;
for (link_end = 0; link_end < size; ++link_end) {
uint8_t c = data[link_end];
if (isalnum(c))
continue;
if (c == '@')
nb++;
else if (c == '.' && link_end < size - 1)
np++;
else if (c != '-' && c != '_')
break;
}
if (link_end < 2 || nb != 1 || np == 0)
return 0;
link_end = autolink_delim(data, link_end, max_rewind, size);
if (link_end == 0)
return 0;
bufput(link, data - rewind, link_end + rewind);
*rewind_p = rewind;
return link_end;
}
size_t
sd_autolink__url(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t size,
unsigned int flags)
{
size_t link_end, rewind = 0, domain_len;
if (size < 4 || data[1] != '/' || data[2] != '/')
return 0;
while (rewind < max_rewind && isalpha(data[-rewind - 1]))
rewind++;
if (!sd_autolink_issafe(data - rewind, size + rewind))
return 0;
link_end = strlen("://");
domain_len = check_domain(
data + link_end,
size - link_end,
flags & SD_AUTOLINK_SHORT_DOMAINS);
if (domain_len == 0)
return 0;
link_end += domain_len;
while (link_end < size && !isspace(data[link_end]))
link_end++;
link_end = autolink_delim(data, link_end, max_rewind, size);
if (link_end == 0)
return 0;
bufput(link, data - rewind, link_end + rewind);
*rewind_p = rewind;
return link_end;
}
size_t
sd_autolink__subreddit(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t max_lookbehind,
size_t size,
int *no_slash
)
{
/**
* This is meant to handle both r/foo and /r/foo style subreddit references.
* In a valid /?r/ link, `*data` will always point to the '/' after the first 'r'.
* In pseudo-regex, this matches something like:
*
* `(/|(?<=\b))r/(all-)?%subreddit%([-+]%subreddit%)*(/[\w\-/]*)?`
* where %subreddit% == `((t:)?\w{2,24}|reddit\.com)`
*/
size_t link_end;
size_t rewind;
int is_allminus = 0;
rewind = check_reddit_autolink_prefix(data, max_rewind, max_lookbehind, size, 'r');
if (!rewind)
return 0;
/* offset to the "meat" of the link */
link_end = strlen("/");
if (size >= link_end + 4 && strncasecmp((char*)data + link_end, "all-", 4) == 0)
is_allminus = 1;
do {
size_t start = link_end;
int max_length = 24;
/* special case: /r/reddit.com (only subreddit containing '.'). */
if ( size >= link_end+10 && strncasecmp((char*)data+link_end, "reddit.com", 10) == 0 ) {
link_end += 10;
/* Make sure there are no trailing characters (don't do
* any autolinking for /r/reddit.commission) */
max_length = 10;
}
/* If not a special case, verify it begins with (t:)?[A-Za-z0-9] */
else {
/* support autolinking to timereddits, /r/t:when (1 April 2012) */
if ( size > link_end+2 && strncasecmp((char*)data+link_end, "t:", 2) == 0 )
link_end += 2; /* Jump over the 't:' */
/* the first character of a subreddit name must be a letter or digit */
if (!isalnum(data[link_end]))
return 0;
link_end += 1;
}
/* consume valid characters ([A-Za-z0-9_]) until we run out */
while (link_end < size && (isalnum(data[link_end]) ||
data[link_end] == '_'))
link_end++;
/* valid subreddit names are between 3 and 21 characters, with
* some subreddits having 2-character names. Don't bother with
* autolinking for anything outside this length range.
* (chksrname function in reddit/.../validator.py) */
if ( link_end-start < 2 || link_end-start > max_length )
return 0;
/* If we are linking to a multireddit, continue */
} while ( link_end < size && (data[link_end] == '+' || (is_allminus && data[link_end] == '-')) && link_end++ );
if (link_end < size && data[link_end] == '/') {
while (link_end < size && (isalnum(data[link_end]) ||
data[link_end] == '_' ||
data[link_end] == '/' ||
data[link_end] == '-'))
link_end++;
}
/* make the link */
bufput(link, data - rewind, link_end + rewind);
*no_slash = (rewind == 1);
*rewind_p = rewind;
return link_end;
}
size_t
sd_autolink__username(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t max_lookbehind,
size_t size,
int *no_slash
)
{
size_t link_end;
size_t rewind;
if (size < 3)
return 0;
rewind = check_reddit_autolink_prefix(data, max_rewind, max_lookbehind, size, 'u');
if (!rewind)
return 0;
link_end = strlen("/");
/* the first letter of a username must... well, be valid, we don't care otherwise */
if (!isalnum(data[link_end]) && data[link_end] != '_' && data[link_end] != '-')
return 0;
link_end += 1;
/* consume valid characters ([A-Za-z0-9_-/]) until we run out */
while (link_end < size && (isalnum(data[link_end]) ||
data[link_end] == '_' ||
data[link_end] == '/' ||
data[link_end] == '-'))
link_end++;
/* make the link */
bufput(link, data - rewind, link_end + rewind);
*no_slash = (rewind == 1);
*rewind_p = rewind;
return link_end;
}

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UPSKIRT_AUTOLINK_H
#define UPSKIRT_AUTOLINK_H
#include "buffer.h"
#ifdef __cplusplus
extern "C" {
#endif
enum {
SD_AUTOLINK_SHORT_DOMAINS = (1 << 0),
};
int
sd_autolink_issafe(const uint8_t *link, size_t link_len);
size_t
sd_autolink__www(size_t *rewind_p, struct buf *link,
uint8_t *data, size_t max_rewind, size_t size, unsigned int flags);
size_t
sd_autolink__email(size_t *rewind_p, struct buf *link,
uint8_t *data, size_t max_rewind, size_t size, unsigned int flags);
size_t
sd_autolink__url(size_t *rewind_p, struct buf *link,
uint8_t *data, size_t max_rewind, size_t size, unsigned int flags);
extern size_t
sd_autolink__subreddit(size_t *rewind_p, struct buf *link, uint8_t *data,
size_t max_rewind, size_t max_lookbehind, size_t size, int *no_slash);
extern size_t
sd_autolink__username(size_t *rewind_p, struct buf *link, uint8_t *data,
size_t max_rewind, size_t max_lookbehind, size_t size, int *no_slash);
#ifdef __cplusplus
}
#endif
#endif
/* vim: set filetype=c: */

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/*
* Copyright (c) 2008, Natacha Porté
* Copyright (c) 2011, Vicent Martí
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define BUFFER_MAX_ALLOC_SIZE (1024 * 1024 * 16) //16mb
#include "buffer.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
/* MSVC compat */
#if defined(_MSC_VER)
# define _buf_vsnprintf _vsnprintf
#else
# define _buf_vsnprintf vsnprintf
#endif
int
bufprefix(const struct buf *buf, const char *prefix)
{
size_t i;
assert(buf && buf->unit);
for (i = 0; i < buf->size; ++i) {
if (prefix[i] == 0)
return 0;
if (buf->data[i] != prefix[i])
return buf->data[i] - prefix[i];
}
return 0;
}
/* bufgrow: increasing the allocated size to the given value */
int
bufgrow(struct buf *buf, size_t neosz)
{
size_t neoasz;
void *neodata;
assert(buf && buf->unit);
if (neosz > BUFFER_MAX_ALLOC_SIZE)
return BUF_ENOMEM;
if (buf->asize >= neosz)
return BUF_OK;
neoasz = buf->asize + buf->unit;
while (neoasz < neosz)
neoasz += buf->unit;
neodata = realloc(buf->data, neoasz);
if (!neodata)
return BUF_ENOMEM;
buf->data = neodata;
buf->asize = neoasz;
return BUF_OK;
}
/* bufnew: allocation of a new buffer */
struct buf *
bufnew(size_t unit)
{
struct buf *ret;
ret = malloc(sizeof (struct buf));
if (ret) {
ret->data = 0;
ret->size = ret->asize = 0;
ret->unit = unit;
}
return ret;
}
/* bufnullterm: NULL-termination of the string array */
const char *
bufcstr(struct buf *buf)
{
assert(buf && buf->unit);
if (buf->size < buf->asize && buf->data[buf->size] == 0)
return (char *)buf->data;
if (buf->size + 1 <= buf->asize || bufgrow(buf, buf->size + 1) == 0) {
buf->data[buf->size] = 0;
return (char *)buf->data;
}
return NULL;
}
/* bufprintf: formatted printing to a buffer */
void
bufprintf(struct buf *buf, const char *fmt, ...)
{
va_list ap;
int n;
assert(buf && buf->unit);
if (buf->size >= buf->asize && bufgrow(buf, buf->size + 1) < 0)
return;
va_start(ap, fmt);
n = _buf_vsnprintf((char *)buf->data + buf->size, buf->asize - buf->size, fmt, ap);
va_end(ap);
if (n < 0) {
#ifdef _MSC_VER
va_start(ap, fmt);
n = _vscprintf(fmt, ap);
va_end(ap);
#else
return;
#endif
}
if ((size_t)n >= buf->asize - buf->size) {
if (bufgrow(buf, buf->size + n + 1) < 0)
return;
va_start(ap, fmt);
n = _buf_vsnprintf((char *)buf->data + buf->size, buf->asize - buf->size, fmt, ap);
va_end(ap);
}
if (n < 0)
return;
buf->size += n;
}
/* bufput: appends raw data to a buffer */
void
bufput(struct buf *buf, const void *data, size_t len)
{
assert(buf && buf->unit);
if (buf->size + len > buf->asize && bufgrow(buf, buf->size + len) < 0)
return;
memcpy(buf->data + buf->size, data, len);
buf->size += len;
}
/* bufputs: appends a NUL-terminated string to a buffer */
void
bufputs(struct buf *buf, const char *str)
{
bufput(buf, str, strlen(str));
}
/* bufputc: appends a single uint8_t to a buffer */
void
bufputc(struct buf *buf, int c)
{
assert(buf && buf->unit);
if (buf->size + 1 > buf->asize && bufgrow(buf, buf->size + 1) < 0)
return;
buf->data[buf->size] = c;
buf->size += 1;
}
/* bufrelease: decrease the reference count and free the buffer if needed */
void
bufrelease(struct buf *buf)
{
if (!buf)
return;
free(buf->data);
free(buf);
}
/* bufreset: frees internal data of the buffer */
void
bufreset(struct buf *buf)
{
if (!buf)
return;
free(buf->data);
buf->data = NULL;
buf->size = buf->asize = 0;
}
/* bufslurp: removes a given number of bytes from the head of the array */
void
bufslurp(struct buf *buf, size_t len)
{
assert(buf && buf->unit);
if (len >= buf->size) {
buf->size = 0;
return;
}
buf->size -= len;
memmove(buf->data, buf->data + len, buf->size);
}
/* buftrucate: truncates the buffer at `size` */
int
buftruncate(struct buf *buf, size_t size)
{
if (buf->size < size || size < 0) {
/* bail out in debug mode so we can figure out why this happened */
assert(0);
return BUF_EINVALIDIDX;
}
buf->size = size;
return BUF_OK;
}

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/*
* Copyright (c) 2008, Natacha Porté
* Copyright (c) 2011, Vicent Martí
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef BUFFER_H__
#define BUFFER_H__
#include <stddef.h>
#include <stdarg.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_MSC_VER)
#define __attribute__(x)
#define inline
#endif
typedef enum {
BUF_OK = 0,
BUF_ENOMEM = -1,
BUF_EINVALIDIDX = -2,
} buferror_t;
/* struct buf: character array buffer */
struct buf {
uint8_t *data; /* actual character data */
size_t size; /* size of the string */
size_t asize; /* allocated size (0 = volatile buffer) */
size_t unit; /* reallocation unit size (0 = read-only buffer) */
};
/* CONST_BUF: global buffer from a string litteral */
#define BUF_STATIC(string) \
{ (uint8_t *)string, sizeof string -1, sizeof string, 0, 0 }
/* VOLATILE_BUF: macro for creating a volatile buffer on the stack */
#define BUF_VOLATILE(strname) \
{ (uint8_t *)strname, strlen(strname), 0, 0, 0 }
/* BUFPUTSL: optimized bufputs of a string litteral */
#define BUFPUTSL(output, literal) \
bufput(output, literal, sizeof literal - 1)
/* bufgrow: increasing the allocated size to the given value */
int bufgrow(struct buf *, size_t);
/* bufnew: allocation of a new buffer */
struct buf *bufnew(size_t) __attribute__ ((malloc));
/* bufnullterm: NUL-termination of the string array (making a C-string) */
const char *bufcstr(struct buf *);
/* bufprefix: compare the beginning of a buffer with a string */
int bufprefix(const struct buf *buf, const char *prefix);
/* bufput: appends raw data to a buffer */
void bufput(struct buf *, const void *, size_t);
/* bufputs: appends a NUL-terminated string to a buffer */
void bufputs(struct buf *, const char *);
/* bufputc: appends a single char to a buffer */
void bufputc(struct buf *, int);
/* bufrelease: decrease the reference count and free the buffer if needed */
void bufrelease(struct buf *);
/* bufreset: frees internal data of the buffer */
void bufreset(struct buf *);
/* bufslurp: removes a given number of bytes from the head of the array */
void bufslurp(struct buf *, size_t);
/* bufprintf: formatted printing to a buffer */
void bufprintf(struct buf *, const char *, ...) __attribute__ ((format (printf, 2, 3)));
/* buftruncate: truncates the buffer at `size` */
int buftruncate(struct buf *buf, size_t size);
#ifdef __cplusplus
}
#endif
#endif

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snudown (1.4.0) unstable; urgency=medium
* autolink r/subreddit and u/user
* security: don't rewind over previous inlines when autolinking
* email autolinks re-enabled due to ^
* more stringent character entity checks and sanitization
* properly handle URLs containing control characters
-- Jordan Milne <jordan.milne@reddit.com> Mon, 01 Jun 2015 13:04:23 -0700
snudown (1.3.2) unstable; urgency=medium
* fix alphanumeric-named entities
-- Neil Williams <neil@reddit.com> Wed, 25 Feb 2015 13:32:41 -0800
snudown (1.3.1) unstable; urgency=medium
* add missing entities to entity whitelist
-- Neil Williams <neil@reddit.com> Tue, 24 Feb 2015 22:12:29 -0800
snudown (1.3.0) unstable; urgency=medium
* validate html entities and escape unrecognized ones
-- Neil Williams <neil@reddit.com> Tue, 24 Feb 2015 17:55:38 -0800
snudown (1.2.0) unstable; urgency=medium
* security: fix rewind issues
* email autolinks disabled due to ^
* security: fix table header OOM bomb
-- Neil Williams <neil@reddit.com> Sat, 20 Sep 2014 11:59:34 -0700
snudown (1.1.6) unstable; urgency=low
* add ts3server url scheme to whitelist
* redo html sanitization for wiki renderer
-- Neil Williams <neil@reddit.com> Tue, 01 Apr 2014 17:12:50 -0700
snudown (1.1.5) unstable; urgency=low
* bring path stuff into user/subreddit autolinking (multis, subpages etc.)
* make /u/ autolinking case sensitive
-- Neil Williams <neil@reddit.com> Wed, 22 May 2013 16:09:31 -0700
snudown (1.1.4) unstable; urgency=low
* make /r/ autolinking case sensitive
-- Neil Williams <neil@reddit.com> Mon, 25 Feb 2013 23:27:10 -0800
snudown (1.1.3) unstable; urgency=low
* add support for /r/all-minus
-- Neil Williams <neil@reddit.com> Tue, 08 Jan 2013 12:55:40 -0800
snudown (1.1.2) unstable; urgency=low
* don't close the toc div if there wasn't a toc :(
-- Neil Williams <neil@reddit.com> Wed, 12 Dec 2012 17:38:05 -0800
snudown (1.1.1) unstable; urgency=low
* minor code cleanup
* add a div around wiki table of contents for styling purposes
-- Neil Williams <neil@reddit.com> Wed, 12 Dec 2012 13:47:49 -0800
snudown (1.1.0) unstable; urgency=low
* add wiki variant of markdown syntax (allows links, and
some raw html)
-- Neil Williams <neil@reddit.com> Wed, 05 Sep 2012 23:30:34 -0700
snudown (1.0.7) unstable; urgency=low
* add python-setuptools to build-depends
-- Neil Williams <neil@reddit.com> Thu, 09 Aug 2012 14:46:49 -0700
snudown (1.0.6) unstable; urgency=low
* made subreddit autolinking more robust thanks to nandhp
* cleaned up packaging
* merged upstream fixes:
* fix blockquotes nested inside paragraphs
* improve parsing of continuous list items
* fix infinite loop parsing strikethrouhgs
-- Neil Williams <neil@reddit.com> Thu, 09 Aug 2012 13:06:38 -0700
snudown (1.0.5) unstable; urgency=low
* require a space between url and title
* merged upstream fixes:
* whitespace after tables prevent them from rendering
* escape html in contents of tables
-- Neil Williams <neil@reddit.com> Thu, 23 Feb 2012 08:40:39 -0800
snudown (1.0.4) unstable; urgency=low
* change username autolinking to /u/username
* properly handle backslash at end of message
-- Neil Williams <neil@reddit.com> Thu, 26 Jan 2012 18:26:45 -0800
snudown (1.0.3) unstable; urgency=low
* ~username auto-linking
* make table headers less strict
* correctly handle ) in link title text
* synced with upstream
* code clean-up
* utf-8 fixes
-- Neil Williams <neil@reddit.com> Wed, 18 Jan 2012 15:20:35 -0800
snudown (1.0.2) unstable; urgency=low
* synced up with upstream
* more safelink relaxation based on community requests
* fixed nesting unordered lists within ordered lists and vice versa
-- Neil Williams <neil@reddit.com> Sat, 19 Nov 2011 17:16:47 -0800
snudown (1.0.1) unstable; urgency=low
* new version, new package
-- Neil Williams <neil@reddit.com> Thu, 17 Nov 2011 14:22:26 -0800
snudown (1.0.0) unstable; urgency=low
* source package automatically created by stdeb 0.6.0+git
-- Neil Williams <neil@reddit.com> Wed, 16 Nov 2011 10:36:53 -0800

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7

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Source: snudown
Maintainer: Neil Williams <neil@reddit.com>
Section: python
Priority: optional
Build-Depends: python-all-dev (>= 2.6.6-3), debhelper (>= 7), python-setuptools, gperf
Standards-Version: 3.9.3
Homepage: https://github.com/reddit/snudown
Vcs-Git: git://github.com/reddit/snudown.git
Package: python-snudown
Architecture: any
Depends: ${misc:Depends}, ${python:Depends}, ${shlibs:Depends}
Breaks: ${python:Breaks}
Description: reddit's python wrapper and customization of the Sundown Markdown interpreter.

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Format: http://dep.debian.net/deps/dep5
Upstream-Name: snudown
Source: https://github.com/reddit/snudown
Files: *
Copyright: 2011-2012 Vicent Marti
2011-2012 reddit Inc.
License: MIT
Files: debian/*
Copyright: 2011-2012 reddit Inc.
License: MIT
Files: test_snudown.py
Copyright: 2011-2012 reddit Inc.
License: MIT
License: MIT
Permission to use, copy, modify, and distribute this software for any purpose
with or without fee is hereby granted, provided that the above copyright
notice and this permission notice appear in all copies.
.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.

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#!/usr/bin/make -f
# This file was automatically generated by stdeb 0.6.0+git at
# Wed, 16 Nov 2011 10:36:53 -0800
%:
dh $@ --with python2 --buildsystem=python_distutils

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3.0 (native)

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cmake_minimum_required(VERSION 2.8)
set(HEADERS
../html/houdini.h
../html/html.h
../src/autolink.h
../src/buffer.h
../src/html_blocks.h
../src/html_entities.h
../src/markdown.h
../src/stack.h
)
set(LIBRARY_SOURCES
../html/houdini_href_e.c
../html/houdini_html_e.c
../html/html.c
../html/html_smartypants.c
../src/autolink.c
../src/buffer.c
../src/markdown.c
../src/stack.c
${HEADERS}
)
set(PROGRAM "snudown-validator")
set(PROGRAM_SOURCES
${LIBRARY_SOURCES}
snudown-validator.c
)
include_directories(. ../src ../html ./build/gumbo_snudown/include ${CMAKE_CURRENT_BINARY_DIR})
link_directories(${CMAKE_CURRENT_SOURCE_DIR}/build/gumbo_snudown/lib)
add_executable(${PROGRAM} ${PROGRAM_SOURCES})
target_link_libraries(${PROGRAM} gumbo)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O3 -g -Wno-error=parentheses")

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# Copyright (c) 2015, reddit inc.
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
all: gumbo_snudown snudown-validator
.PHONY: all clean gumbo_snudown snudown-validator build_dir
build_dir:
mkdir -p build
# Our modified gumbo for finding security-relevant syntax issues
gumbo_snudown: build_dir
mkdir -p build/gumbo_snudown
git submodule update --recursive
@[ -f "${CURDIR}/gumbo_snudown/configure" ] || { \
cd gumbo_snudown; \
./autogen.sh; \
./configure --prefix=$(CURDIR)/build/gumbo_snudown; \
}
# Don't build this with AFL instrumentation, I'm assuming Google
# already ran their own fuzzer over their own parser...
$(MAKE) -C gumbo_snudown all install
gperf_src:
cd ../src/ && gperf html_entities.gperf --output-file=html_entities.h
# executable
snudown-validator: build_dir gumbo_snudown gperf_src
cd build && cmake .. -DCMAKE_C_COMPILER=$(AFL_PATH)/afl-gcc
$(MAKE) -C build all
# stuff for fuzzing
gen_testcases:
mkdir -p testing/testcases
rm -f testing/testcases/test_default_*.md
python2.7 gen_testcases.py
afl: gen_testcases snudown-validator
@[ -n "$(AFL_PATH)" ] || { echo '$$AFL_PATH not set'; false; }
@mkdir -p testing/afl_results
$(AFL_PATH)/afl-fuzz \
-i testing/testcases \
-o testing/afl_results \
-t 100 \
-m none \
./build/snudown-validator
# housekeeping
clean:
rm -rf *.o
rm -rf build/

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#!/bin/env python
# dump all of our testcases into a directory as separate files, like AFL
# wants.
import os.path
import sys
import itertools
sys.path.append("..")
import test_snudown
cases = itertools.chain(test_snudown.cases.keys(), test_snudown.wiki_cases.keys())
for i, md in enumerate(cases):
# skip huge testcases
if len(md) > 2048:
continue
test_path = os.path.join('testing', 'testcases', 'test_default_%d.md' % i)
with open(test_path, 'w') as f:
f.write(md)

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#include "markdown.h"
#include "html.h"
#include "buffer.h"
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <gumbo.h>
#define READ_UNIT 1024
#define OUTPUT_UNIT 64
#include "autolink.h"
#define SNUDOWN_VERSION "1.3.2"
enum snudown_renderer_mode {
RENDERER_USERTEXT = 0,
RENDERER_WIKI,
RENDERER_COUNT
};
struct snudown_renderopt {
struct html_renderopt html;
int nofollow;
const char *target;
};
struct snudown_renderer {
struct sd_markdown* main_renderer;
struct sd_markdown* toc_renderer;
struct module_state* state;
struct module_state* toc_state;
};
struct module_state {
struct sd_callbacks callbacks;
struct snudown_renderopt options;
};
static struct snudown_renderer sundown[RENDERER_COUNT];
static char* html_element_whitelist[] = {"tr", "th", "td", "table", "tbody", "thead", "tfoot", "caption", NULL};
static char* html_attr_whitelist[] = {"colspan", "rowspan", "cellspacing", "cellpadding", "scope", NULL};
static struct module_state usertext_toc_state;
static struct module_state wiki_toc_state;
static struct module_state usertext_state;
static struct module_state wiki_state;
static const unsigned int snudown_default_md_flags =
MKDEXT_NO_INTRA_EMPHASIS |
MKDEXT_SUPERSCRIPT |
MKDEXT_AUTOLINK |
MKDEXT_STRIKETHROUGH |
MKDEXT_TABLES;
static const unsigned int snudown_default_render_flags =
HTML_SKIP_HTML |
HTML_SKIP_IMAGES |
HTML_SAFELINK |
HTML_ESCAPE |
HTML_USE_XHTML;
static const unsigned int snudown_wiki_render_flags =
HTML_SKIP_HTML |
HTML_SAFELINK |
HTML_ALLOW_ELEMENT_WHITELIST |
HTML_ESCAPE |
HTML_USE_XHTML;
static void
snudown_link_attr(struct buf *ob, const struct buf *link, void *opaque)
{
struct snudown_renderopt *options = opaque;
if (options->nofollow)
BUFPUTSL(ob, " rel=\"nofollow\"");
if (options->target != NULL) {
BUFPUTSL(ob, " target=\"");
bufputs(ob, options->target);
bufputc(ob, '\"');
}
}
static struct sd_markdown* make_custom_renderer(struct module_state* state,
const unsigned int renderflags,
const unsigned int markdownflags,
int toc_renderer) {
if(toc_renderer) {
sdhtml_toc_renderer(&state->callbacks,
(struct html_renderopt *)&state->options);
} else {
sdhtml_renderer(&state->callbacks,
(struct html_renderopt *)&state->options,
renderflags);
}
state->options.html.link_attributes = &snudown_link_attr;
state->options.html.html_element_whitelist = html_element_whitelist;
state->options.html.html_attr_whitelist = html_attr_whitelist;
return sd_markdown_new(
markdownflags,
16,
64,
&state->callbacks,
&state->options
);
}
void init_default_renderer() {
sundown[RENDERER_USERTEXT].main_renderer = make_custom_renderer(&usertext_state, snudown_default_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_USERTEXT].toc_renderer = make_custom_renderer(&usertext_toc_state, snudown_default_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_USERTEXT].state = &usertext_state;
sundown[RENDERER_USERTEXT].toc_state = &usertext_toc_state;
}
void init_wiki_renderer() {
sundown[RENDERER_WIKI].main_renderer = make_custom_renderer(&wiki_state, snudown_wiki_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_WIKI].toc_renderer = make_custom_renderer(&wiki_toc_state, snudown_wiki_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_WIKI].state = &wiki_state;
sundown[RENDERER_WIKI].toc_state = &wiki_toc_state;
}
void
snudown_md(struct buf *ob, const uint8_t *document, size_t doc_size, int wiki_mode)
{
int renderer = RENDERER_USERTEXT;
int enable_toc = 0;
struct snudown_renderer _snudown;
int nofollow = 0;
char* target = NULL;
char* toc_id_prefix = NULL;
unsigned int flags;
if (wiki_mode)
renderer = RENDERER_WIKI;
_snudown = sundown[renderer];
struct snudown_renderopt *options = &(_snudown.state->options);
options->nofollow = nofollow;
options->target = target;
flags = options->html.flags;
if (enable_toc) {
_snudown.toc_state->options.html.toc_id_prefix = toc_id_prefix;
sd_markdown_render(ob, document, doc_size, _snudown.toc_renderer);
_snudown.toc_state->options.html.toc_id_prefix = NULL;
options->html.flags |= HTML_TOC;
}
options->html.toc_id_prefix = toc_id_prefix;
/* do the magic */
sd_markdown_render(ob, document, doc_size, _snudown.main_renderer);
options->html.toc_id_prefix = NULL;
options->html.flags = flags;
}
int
main(int argc, char **argv)
{
init_default_renderer();
init_wiki_renderer();
struct buf *ib, *ob;
int size_read = 0, wiki_mode = 0, i = 0, have_errors = 0;
/* reading everything */
ib = bufnew(READ_UNIT);
bufgrow(ib, READ_UNIT);
while ((size_read = fread(ib->data + ib->size, 1, ib->asize - ib->size, stdin)) > 0) {
ib->size += size_read;
bufgrow(ib, ib->size + READ_UNIT);
}
/* Render to a buffer, then print that out */
ob = bufnew(OUTPUT_UNIT);
bufputs(ob, "<!DOCTYPE html><html><body>\n");
snudown_md(ob, ib->data, ib->size, wiki_mode);
bufputs(ob, "</body></html>\n");
// Wiki mode explicitly allows unbalanced tags, need some way to exclude those
if (!wiki_mode) {
GumboOutput* output = gumbo_parse_with_options(&kGumboDefaultOptions, bufcstr(ob), ob->size);
for (i=0; i < output->errors.length; ++i) {
// stupid "public" API I hacked in.
void* thing = output->errors.data[i];
GumboErrorType type = gumbo_get_error_type(thing);
switch(type) {
case GUMBO_ERR_UTF8_INVALID:
case GUMBO_ERR_UTF8_NULL:
// Making sure the user gave us valid
// utf-8 or transforming it to valid
// utf-8 is outside the scope of snudown
continue;
default:
have_errors = 1;
printf("%s\n", GUMBO_ERROR_NAMES[type]);
printf("%s\n",gumbo_get_error_text(thing));
printf("===============\n");
break;
}
}
if (have_errors) {
// gotta trigger a crash for AFL to catch it
assert(0);
}
gumbo_destroy_output(&kGumboDefaultOptions, output);
}
bufrelease(ob);
bufrelease(ib);
return 0;
}

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#!/bin/bash
find testing/afl_results/ -regextype posix-egrep -regex ".*/(crashes|hangs)/.*" | xargs -I '{}' ./validatemd.sh {}

3
SnudownTest/fuzzing/validatemd.sh Normal file
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#!/bin/bash
echo "** ${1}"
./build/snudown-validator < $1

3
SnudownTest/gperf.exe Normal file
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version https://git-lfs.github.com/spec/v1
oid sha256:3f9266ea2d2bd19a503b5d2ec613e983c6ed9ea45ff6b5820b0681fd1b778d12
size 103424

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#ifndef HOUDINI_H__
#define HOUDINI_H__
#include "buffer.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HOUDINI_USE_LOCALE
# define _isxdigit(c) isxdigit(c)
# define _isdigit(c) isdigit(c)
#else
/*
* Helper _isdigit methods -- do not trust the current locale
* */
# define _isxdigit(c) (strchr("0123456789ABCDEFabcdef", (c)) != NULL)
# define _isdigit(c) ((c) >= '0' && (c) <= '9')
#endif
extern void houdini_escape_html(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_html0(struct buf *ob, const uint8_t *src, size_t size, int secure);
extern void houdini_unescape_html(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_xml(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_uri(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_url(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_href(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_unescape_uri(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_unescape_url(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_js(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_unescape_js(struct buf *ob, const uint8_t *src, size_t size);
#ifdef __cplusplus
}
#endif
#endif

116
SnudownTest/houdini_href_e.c Normal file
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#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "houdini.h"
#define ESCAPE_GROW_FACTOR(x) (((x) * 12) / 10)
/*
* The following characters will not be escaped:
*
* -_.+!*'(),%#@?=;:/,+&$ alphanum
*
* Note that this character set is the addition of:
*
* - The characters which are safe to be in an URL
* - The characters which are *not* safe to be in
* an URL because they are RESERVED characters.
*
* We asume (lazily) that any RESERVED char that
* appears inside an URL is actually meant to
* have its native function (i.e. as an URL
* component/separator) and hence needs no escaping.
*
* There are two exceptions: the chacters & (amp)
* and ' (single quote) do not appear in the table.
* They are meant to appear in the URL as components,
* yet they require special HTML-entity escaping
* to generate valid HTML markup.
*
* All other characters will be escaped to %XX.
*
*/
static const char HREF_SAFE[] = {
2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 2, 2, 0, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
void
houdini_escape_href(struct buf *ob, const uint8_t *src, size_t size)
{
static const char hex_chars[] = "0123456789ABCDEF";
size_t i = 0, org;
char hex_str[3];
bufgrow(ob, ESCAPE_GROW_FACTOR(size));
hex_str[0] = '%';
while (i < size) {
org = i;
/* Skip by characters that don't need special
* processing */
while (i < size && HREF_SAFE[src[i]] == 1)
i++;
if (i > org)
bufput(ob, src + org, i - org);
/* escaping */
if (i >= size)
break;
/* throw out control characters */
if (HREF_SAFE[src[i]] == 2) {
i++;
continue;
}
switch (src[i]) {
/* amp appears all the time in URLs, but needs
* HTML-entity escaping to be inside an href */
case '&':
BUFPUTSL(ob, "&amp;");
break;
/* the single quote is a valid URL character
* according to the standard; it needs HTML
* entity escaping too */
case '\'':
BUFPUTSL(ob, "&#x27;");
break;
/* the space can be escaped to %20 or a plus
* sign. we're going with the generic escape
* for now. the plus thing is more commonly seen
* when building GET strings */
#if 0
case ' ':
bufputc(ob, '+');
break;
#endif
/* every other character goes with a %XX escaping */
default:
hex_str[1] = hex_chars[(src[i] >> 4) & 0xF];
hex_str[2] = hex_chars[src[i] & 0xF];
bufput(ob, hex_str, 3);
}
i++;
}
}

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#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "houdini.h"
#define ESCAPE_GROW_FACTOR(x) (((x) * 12) / 10) /* this is very scientific, yes */
/**
* According to the OWASP rules:
*
* & --> &amp;
* < --> &lt;
* > --> &gt;
* " --> &quot;
* ' --> &#x27; &apos; is not recommended
* / --> &#x2F; forward slash is included as it helps end an HTML entity
*
*/
static const char HTML_ESCAPE_TABLE[] = {
7, 7, 7, 7, 7, 7, 7, 7, 7, 0, 0, 7, 7, 0, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 4,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 6, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static const char *HTML_ESCAPES[] = {
"",
"&quot;",
"&amp;",
"&#39;",
"&#47;",
"&lt;",
"&gt;",
"", // throw out control characters
};
void
houdini_escape_html0(struct buf *ob, const uint8_t *src, size_t size, int secure)
{
size_t i = 0, org, esc = 0;
bufgrow(ob, ESCAPE_GROW_FACTOR(size));
while (i < size) {
org = i;
while (i < size && (esc = HTML_ESCAPE_TABLE[src[i]]) == 0)
i++;
if (i > org)
bufput(ob, src + org, i - org);
/* escaping */
if (i >= size)
break;
/* The forward slash is only escaped in secure mode */
if (src[i] == '/' && !secure) {
bufputc(ob, '/');
} else if (HTML_ESCAPE_TABLE[src[i]] == 7) {
/* skip control characters */
} else {
bufputs(ob, HTML_ESCAPES[esc]);
}
i++;
}
}
void
houdini_escape_html(struct buf *ob, const uint8_t *src, size_t size)
{
houdini_escape_html0(ob, src, size, 1);
}

790
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/*
* Copyright (c) 2009, Natacha Porté
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "markdown.h"
#include "html.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <stdbool.h>
#include "houdini.h"
#define USE_XHTML(opt) (opt->flags & HTML_USE_XHTML)
int
sdhtml_is_tag(const uint8_t *tag_data, size_t tag_size, const char *tagname)
{
size_t i;
int closed = 0;
if (tag_size < 3 || tag_data[0] != '<')
return HTML_TAG_NONE;
i = 1;
if (tag_data[i] == '/') {
closed = 1;
i++;
}
for (; i < tag_size; ++i, ++tagname) {
if (*tagname == 0)
break;
if (tag_data[i] != *tagname)
return HTML_TAG_NONE;
}
if (i == tag_size)
return HTML_TAG_NONE;
if (isspace(tag_data[i]) || tag_data[i] == '>')
return closed ? HTML_TAG_CLOSE : HTML_TAG_OPEN;
return HTML_TAG_NONE;
}
static inline void escape_html(struct buf *ob, const uint8_t *source, size_t length)
{
houdini_escape_html0(ob, source, length, 0);
}
static inline void escape_href(struct buf *ob, const uint8_t *source, size_t length)
{
houdini_escape_href(ob, source, length);
}
/********************
* GENERIC RENDERER *
********************/
static int
rndr_autolink(struct buf *ob, const struct buf *link, enum mkd_autolink type, void *opaque)
{
struct html_renderopt *options = opaque;
uint8_t offset = 0;
if (!link || !link->size)
return 0;
if ((options->flags & HTML_SAFELINK) != 0 &&
!sd_autolink_issafe(link->data, link->size) &&
type != MKDA_EMAIL)
return 0;
BUFPUTSL(ob, "<a href=\"");
if (type == MKDA_EMAIL)
BUFPUTSL(ob, "mailto:");
escape_href(ob, link->data + offset, link->size - offset);
if (options->link_attributes) {
bufputc(ob, '\"');
options->link_attributes(ob, link, opaque);
bufputc(ob, '>');
} else {
BUFPUTSL(ob, "\">");
}
/*
* Pretty printing: if we get an email address as
* an actual URI, e.g. `mailto:foo@bar.com`, we don't
* want to print the `mailto:` prefix
*/
if (bufprefix(link, "mailto:") == 0) {
escape_html(ob, link->data + 7, link->size - 7);
} else {
escape_html(ob, link->data, link->size);
}
BUFPUTSL(ob, "</a>");
return 1;
}
static void
rndr_blockcode(struct buf *ob, const struct buf *text, const struct buf *lang, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
if (lang && lang->size) {
size_t i, cls;
BUFPUTSL(ob, "<pre><code class=\"");
for (i = 0, cls = 0; i < lang->size; ++i, ++cls) {
while (i < lang->size && isspace(lang->data[i]))
i++;
if (i < lang->size) {
size_t org = i;
while (i < lang->size && !isspace(lang->data[i]))
i++;
if (lang->data[org] == '.')
org++;
if (cls) bufputc(ob, ' ');
escape_html(ob, lang->data + org, i - org);
}
}
BUFPUTSL(ob, "\">");
} else
BUFPUTSL(ob, "<pre><code>");
if (text)
escape_html(ob, text->data, text->size);
BUFPUTSL(ob, "</code></pre>\n");
}
static void
rndr_blockquote(struct buf *ob, const struct buf *text, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, "<blockquote>\n");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</blockquote>\n");
}
static int
rndr_codespan(struct buf *ob, const struct buf *text, void *opaque)
{
BUFPUTSL(ob, "<code>");
if (text) escape_html(ob, text->data, text->size);
BUFPUTSL(ob, "</code>");
return 1;
}
static int
rndr_strikethrough(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size)
return 0;
BUFPUTSL(ob, "<del>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</del>");
return 1;
}
static int
rndr_double_emphasis(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size)
return 0;
BUFPUTSL(ob, "<strong>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</strong>");
return 1;
}
static int
rndr_emphasis(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<em>");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</em>");
return 1;
}
static int
rndr_linebreak(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
bufputs(ob, USE_XHTML(options) ? "<br/>\n" : "<br>\n");
return 1;
}
static void
rndr_header(struct buf *ob, const struct buf *text, int level, void *opaque)
{
struct html_renderopt *options = opaque;
if (ob->size)
bufputc(ob, '\n');
if (options->flags & HTML_TOC) {
bufprintf(ob, "<h%d id=\"", level);
if (options->toc_id_prefix) {
bufputs(ob, options->toc_id_prefix);
}
bufprintf(ob, "toc_%d\">", options->toc_data.header_count++);
} else {
bufprintf(ob, "<h%d>", level);
}
if (text) bufput(ob, text->data, text->size);
bufprintf(ob, "</h%d>\n", level);
}
static int
rndr_link(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *content, void *opaque)
{
struct html_renderopt *options = opaque;
if (link != NULL && (options->flags & HTML_SAFELINK) != 0 && !sd_autolink_issafe(link->data, link->size))
return 0;
BUFPUTSL(ob, "<a href=\"");
if (link && link->size)
escape_href(ob, link->data, link->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
escape_html(ob, title->data, title->size);
}
if (options->link_attributes) {
bufputc(ob, '\"');
options->link_attributes(ob, link, opaque);
bufputc(ob, '>');
} else {
BUFPUTSL(ob, "\">");
}
if (content && content->size) bufput(ob, content->data, content->size);
BUFPUTSL(ob, "</a>");
return 1;
}
static void
rndr_list(struct buf *ob, const struct buf *text, int flags, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
bufput(ob, flags & MKD_LIST_ORDERED ? "<ol>\n" : "<ul>\n", 5);
if (text) bufput(ob, text->data, text->size);
bufput(ob, flags & MKD_LIST_ORDERED ? "</ol>\n" : "</ul>\n", 6);
}
static void
rndr_listitem(struct buf *ob, const struct buf *text, int flags, void *opaque)
{
BUFPUTSL(ob, "<li>");
if (text) {
size_t size = text->size;
while (size && text->data[size - 1] == '\n')
size--;
bufput(ob, text->data, size);
}
BUFPUTSL(ob, "</li>\n");
}
static void
rndr_paragraph(struct buf *ob, const struct buf *text, void *opaque)
{
struct html_renderopt *options = opaque;
size_t i = 0;
if (ob->size) bufputc(ob, '\n');
if (!text || !text->size)
return;
while (i < text->size && isspace(text->data[i])) i++;
if (i == text->size)
return;
BUFPUTSL(ob, "<p>");
if (options->flags & HTML_HARD_WRAP) {
size_t org;
while (i < text->size) {
org = i;
while (i < text->size && text->data[i] != '\n')
i++;
if (i > org)
bufput(ob, text->data + org, i - org);
/*
* do not insert a line break if this newline
* is the last character on the paragraph
*/
if (i >= text->size - 1)
break;
rndr_linebreak(ob, opaque);
i++;
}
} else {
bufput(ob, &text->data[i], text->size - i);
}
BUFPUTSL(ob, "</p>\n");
}
static void
rndr_raw_block(struct buf *ob, const struct buf *text, void *opaque)
{
size_t org, sz;
if (!text) return;
sz = text->size;
while (sz > 0 && text->data[sz - 1] == '\n') sz--;
org = 0;
while (org < sz && text->data[org] == '\n') org++;
if (org >= sz) return;
if (ob->size) bufputc(ob, '\n');
bufput(ob, text->data + org, sz - org);
bufputc(ob, '\n');
}
static int
rndr_triple_emphasis(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<strong><em>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</em></strong>");
return 1;
}
static void
rndr_hrule(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
if (ob->size) bufputc(ob, '\n');
bufputs(ob, USE_XHTML(options) ? "<hr/>\n" : "<hr>\n");
}
static int
rndr_image(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *alt, void *opaque)
{
struct html_renderopt *options = opaque;
if (!link || !link->size) return 0;
BUFPUTSL(ob, "<img src=\"");
escape_href(ob, link->data, link->size);
BUFPUTSL(ob, "\" alt=\"");
if (alt && alt->size)
escape_html(ob, alt->data, alt->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
escape_html(ob, title->data, title->size); }
bufputs(ob, USE_XHTML(options) ? "\"/>" : "\">");
return 1;
}
static void
rndr_html_tag(struct buf *ob, const struct buf *text, void *opaque,
char* tagname, char** whitelist, int tagtype)
{
size_t i, x, z, in_str = 0, seen_equals = 0, done = 0, done_attr = 0, reset = 0;
struct buf *attr;
struct buf *value;
char c;
bufputc(ob, '<');
if(tagtype == HTML_TAG_CLOSE) {
bufputc(ob, '/');
bufputs(ob, tagname);
bufputc(ob, '>');
return;
}
bufputs(ob, tagname);
i = 1 + strlen(tagname);
attr = bufnew(16);
value = bufnew(16);
for(; i < text->size && !done; i++) {
c = text->data[i];
done = 0;
reset = 0;
done_attr = 0;
switch(c) {
case '>':
done = 1;
break;
case '\'':
case '"':
if(!seen_equals) {
reset = 1;
} else if(!in_str) {
in_str = c;
} else if(in_str == c) {
in_str = 0;
done_attr = 1;
} else {
bufputc(value, c);
}
break;
case ' ':
if (in_str) {
bufputc(value, ' ');
} else {
reset = 1;
}
break;
case '=':
if(seen_equals) {
reset = 1;
break;
}
seen_equals = 1;
break;
default:
if(seen_equals && in_str || !seen_equals) {
bufputc(seen_equals ? value : attr, c);
}
break;
}
if(done_attr) {
int valid = 0;
for(z = 0; whitelist[z]; z++) {
if(strlen(whitelist[z]) != attr->size) {
continue;
}
for(x = 0; x < attr->size; x++) {
if(tolower(whitelist[z][x]) != tolower(attr->data[x])) {
break;
}
}
if(x == attr->size) {
valid = 1;
break;
}
}
if(valid && value->size && attr->size) {
bufputc(ob, ' ');
escape_html(ob, attr->data, attr->size);
bufputs(ob, "=\"");
escape_html(ob, value->data, value->size);
bufputc(ob, '"');
}
reset = 1;
}
if(reset) {
seen_equals = 0;
in_str = 0;
bufreset(attr);
bufreset(value);
}
}
bufrelease(attr);
bufrelease(value);
bufputc(ob, '>');
}
static int
rndr_raw_html(struct buf *ob, const struct buf *text, void *opaque)
{
struct html_renderopt *options = opaque;
char** whitelist = options->html_element_whitelist;
int i, tagtype;
/* Items on the whitelist ignore all other flags and just output */
if (((options->flags & HTML_ALLOW_ELEMENT_WHITELIST) != 0) && whitelist) {
for (i = 0; whitelist[i]; i++) {
tagtype = sdhtml_is_tag(text->data, text->size, whitelist[i]);
if (tagtype != HTML_TAG_NONE) {
rndr_html_tag(ob, text, opaque,
whitelist[i],
options->html_attr_whitelist,
tagtype);
return 1;
}
}
}
/* HTML_ESCAPE overrides SKIP_HTML, SKIP_STYLE, SKIP_LINKS and SKIP_IMAGES
* It doens't see if there are any valid tags, just escape all of them. */
if((options->flags & HTML_ESCAPE) != 0) {
escape_html(ob, text->data, text->size);
return 1;
}
if ((options->flags & HTML_SKIP_HTML) != 0)
return 1;
if ((options->flags & HTML_SKIP_STYLE) != 0 &&
sdhtml_is_tag(text->data, text->size, "style"))
return 1;
if ((options->flags & HTML_SKIP_LINKS) != 0 &&
sdhtml_is_tag(text->data, text->size, "a"))
return 1;
if ((options->flags & HTML_SKIP_IMAGES) != 0 &&
sdhtml_is_tag(text->data, text->size, "img"))
return 1;
bufput(ob, text->data, text->size);
return 1;
}
static void
rndr_table(struct buf *ob, const struct buf *header, const struct buf *body, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, "<table><thead>\n");
if (header)
bufput(ob, header->data, header->size);
BUFPUTSL(ob, "</thead><tbody>\n");
if (body)
bufput(ob, body->data, body->size);
BUFPUTSL(ob, "</tbody></table>\n");
}
static void
rndr_tablerow(struct buf *ob, const struct buf *text, void *opaque)
{
BUFPUTSL(ob, "<tr>\n");
if (text)
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</tr>\n");
}
static void
rndr_tablecell(struct buf *ob, const struct buf *text, int flags, void *opaque, int col_span)
{
if (flags & MKD_TABLE_HEADER) {
BUFPUTSL(ob, "<th");
} else {
BUFPUTSL(ob, "<td");
}
if (col_span > 1) {
bufprintf(ob, " colspan=\"%d\" ", col_span);
}
switch (flags & MKD_TABLE_ALIGNMASK) {
case MKD_TABLE_ALIGN_CENTER:
BUFPUTSL(ob, " align=\"center\">");
break;
case MKD_TABLE_ALIGN_L:
BUFPUTSL(ob, " align=\"left\">");
break;
case MKD_TABLE_ALIGN_R:
BUFPUTSL(ob, " align=\"right\">");
break;
default:
BUFPUTSL(ob, ">");
}
if (text)
bufput(ob, text->data, text->size);
if (flags & MKD_TABLE_HEADER) {
BUFPUTSL(ob, "</th>\n");
} else {
BUFPUTSL(ob, "</td>\n");
}
}
static int
rndr_superscript(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<sup>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</sup>");
return 1;
}
static void
rndr_normal_text(struct buf *ob, const struct buf *text, void *opaque)
{
if (text)
escape_html(ob, text->data, text->size);
}
static void
toc_header(struct buf *ob, const struct buf *text, int level, void *opaque)
{
struct html_renderopt *options = opaque;
/* set the level offset if this is the first header
* we're parsing for the document */
if (options->toc_data.current_level == 0) {
BUFPUTSL(ob, "<div class=\"toc\">\n");
options->toc_data.level_offset = level - 1;
}
level -= options->toc_data.level_offset;
if (level > options->toc_data.current_level) {
while (level > options->toc_data.current_level) {
BUFPUTSL(ob, "<ul>\n<li>\n");
options->toc_data.current_level++;
}
} else if (level < options->toc_data.current_level) {
BUFPUTSL(ob, "</li>\n");
while (level < options->toc_data.current_level) {
BUFPUTSL(ob, "</ul>\n</li>\n");
options->toc_data.current_level--;
}
BUFPUTSL(ob,"<li>\n");
} else {
BUFPUTSL(ob,"</li>\n<li>\n");
}
BUFPUTSL(ob, "<a href=\"#");
if (options->toc_id_prefix) {
bufputs(ob, options->toc_id_prefix);
}
bufprintf(ob, "toc_%d\">", options->toc_data.header_count++);
if (text)
escape_html(ob, text->data, text->size);
BUFPUTSL(ob, "</a>\n");
}
static int
toc_link(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *content, void *opaque)
{
if (content && content->size)
bufput(ob, content->data, content->size);
return 1;
}
static void
reset_toc(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
memset(&(options->toc_data), 0, sizeof(options->toc_data));
}
static void
toc_finalize(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
bool has_toc = false;
while (options->toc_data.current_level > 0) {
BUFPUTSL(ob, "</li>\n</ul>\n");
options->toc_data.current_level--;
has_toc = true;
}
if(has_toc) {
BUFPUTSL(ob, "</div>\n");
}
reset_toc(ob, opaque);
}
void
sdhtml_toc_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options)
{
static const struct sd_callbacks cb_default = {
NULL,
NULL,
NULL,
toc_header,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
rndr_codespan,
rndr_double_emphasis,
rndr_emphasis,
NULL,
NULL,
toc_link,
NULL,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,
NULL,
NULL,
toc_finalize,
};
memset(options, 0x0, sizeof(struct html_renderopt));
options->flags = HTML_TOC | HTML_SKIP_HTML;
memcpy(callbacks, &cb_default, sizeof(struct sd_callbacks));
}
void
sdhtml_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options, unsigned int render_flags)
{
static const struct sd_callbacks cb_default = {
rndr_blockcode,
rndr_blockquote,
rndr_raw_block,
rndr_header,
rndr_hrule,
rndr_list,
rndr_listitem,
rndr_paragraph,
rndr_table,
rndr_tablerow,
rndr_tablecell,
rndr_autolink,
rndr_codespan,
rndr_double_emphasis,
rndr_emphasis,
rndr_image,
rndr_linebreak,
rndr_link,
rndr_raw_html,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,
rndr_normal_text,
NULL,
reset_toc,
};
/* Prepare the options pointer */
memset(options, 0x0, sizeof(struct html_renderopt));
options->flags = render_flags;
/* Prepare the callbacks */
memcpy(callbacks, &cb_default, sizeof(struct sd_callbacks));
if (render_flags & HTML_SKIP_IMAGES)
callbacks->image = NULL;
if (render_flags & HTML_SKIP_LINKS) {
callbacks->link = NULL;
callbacks->autolink = NULL;
}
if (render_flags & HTML_SKIP_HTML || render_flags & HTML_ESCAPE)
callbacks->blockhtml = NULL;
}

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UPSKIRT_HTML_H
#define UPSKIRT_HTML_H
#include "markdown.h"
#include "buffer.h"
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
struct html_renderopt {
struct {
int header_count;
int current_level;
int level_offset;
} toc_data;
char* toc_id_prefix;
unsigned int flags;
char** html_element_whitelist;
char** html_attr_whitelist;
/* extra callbacks */
void (*link_attributes)(struct buf *ob, const struct buf *url, void *self);
};
typedef enum {
HTML_SKIP_HTML = (1 << 0),
HTML_SKIP_STYLE = (1 << 1),
HTML_SKIP_IMAGES = (1 << 2),
HTML_SKIP_LINKS = (1 << 3),
HTML_EXPAND_TABS = (1 << 4),
HTML_SAFELINK = (1 << 5),
HTML_TOC = (1 << 6),
HTML_HARD_WRAP = (1 << 7),
HTML_USE_XHTML = (1 << 8),
HTML_ESCAPE = (1 << 9),
HTML_ALLOW_ELEMENT_WHITELIST = (1 << 10),
} html_render_mode;
typedef enum {
HTML_TAG_NONE = 0,
HTML_TAG_OPEN,
HTML_TAG_CLOSE,
} html_tag;
int
sdhtml_is_tag(const uint8_t *tag_data, size_t tag_size, const char *tagname);
extern void
sdhtml_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options_ptr, unsigned int render_flags);
extern void
sdhtml_toc_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options_ptr);
extern void
sdhtml_smartypants(struct buf *ob, const uint8_t *text, size_t size);
#ifdef __cplusplus
}
#endif
#endif

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#ifndef HOUDINI_H__
#define HOUDINI_H__
#include "buffer.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef HOUDINI_USE_LOCALE
# define _isxdigit(c) isxdigit(c)
# define _isdigit(c) isdigit(c)
#else
/*
* Helper _isdigit methods -- do not trust the current locale
* */
# define _isxdigit(c) (strchr("0123456789ABCDEFabcdef", (c)) != NULL)
# define _isdigit(c) ((c) >= '0' && (c) <= '9')
#endif
extern void houdini_escape_html(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_html0(struct buf *ob, const uint8_t *src, size_t size, int secure);
extern void houdini_unescape_html(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_xml(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_uri(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_url(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_href(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_unescape_uri(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_unescape_url(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_escape_js(struct buf *ob, const uint8_t *src, size_t size);
extern void houdini_unescape_js(struct buf *ob, const uint8_t *src, size_t size);
#ifdef __cplusplus
}
#endif
#endif

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#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "houdini.h"
#define ESCAPE_GROW_FACTOR(x) (((x) * 12) / 10)
/*
* The following characters will not be escaped:
*
* -_.+!*'(),%#@?=;:/,+&$ alphanum
*
* Note that this character set is the addition of:
*
* - The characters which are safe to be in an URL
* - The characters which are *not* safe to be in
* an URL because they are RESERVED characters.
*
* We asume (lazily) that any RESERVED char that
* appears inside an URL is actually meant to
* have its native function (i.e. as an URL
* component/separator) and hence needs no escaping.
*
* There are two exceptions: the chacters & (amp)
* and ' (single quote) do not appear in the table.
* They are meant to appear in the URL as components,
* yet they require special HTML-entity escaping
* to generate valid HTML markup.
*
* All other characters will be escaped to %XX.
*
*/
static const char HREF_SAFE[] = {
2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 2, 2, 0, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
void
houdini_escape_href(struct buf *ob, const uint8_t *src, size_t size)
{
static const char hex_chars[] = "0123456789ABCDEF";
size_t i = 0, org;
char hex_str[3];
bufgrow(ob, ESCAPE_GROW_FACTOR(size));
hex_str[0] = '%';
while (i < size) {
org = i;
/* Skip by characters that don't need special
* processing */
while (i < size && HREF_SAFE[src[i]] == 1)
i++;
if (i > org)
bufput(ob, src + org, i - org);
/* escaping */
if (i >= size)
break;
/* throw out control characters */
if (HREF_SAFE[src[i]] == 2) {
i++;
continue;
}
switch (src[i]) {
/* amp appears all the time in URLs, but needs
* HTML-entity escaping to be inside an href */
case '&':
BUFPUTSL(ob, "&amp;");
break;
/* the single quote is a valid URL character
* according to the standard; it needs HTML
* entity escaping too */
case '\'':
BUFPUTSL(ob, "&#x27;");
break;
/* the space can be escaped to %20 or a plus
* sign. we're going with the generic escape
* for now. the plus thing is more commonly seen
* when building GET strings */
#if 0
case ' ':
bufputc(ob, '+');
break;
#endif
/* every other character goes with a %XX escaping */
default:
hex_str[1] = hex_chars[(src[i] >> 4) & 0xF];
hex_str[2] = hex_chars[src[i] & 0xF];
bufput(ob, hex_str, 3);
}
i++;
}
}

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#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "houdini.h"
#define ESCAPE_GROW_FACTOR(x) (((x) * 12) / 10) /* this is very scientific, yes */
/**
* According to the OWASP rules:
*
* & --> &amp;
* < --> &lt;
* > --> &gt;
* " --> &quot;
* ' --> &#x27; &apos; is not recommended
* / --> &#x2F; forward slash is included as it helps end an HTML entity
*
*/
static const char HTML_ESCAPE_TABLE[] = {
7, 7, 7, 7, 7, 7, 7, 7, 7, 0, 0, 7, 7, 0, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 4,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 6, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static const char *HTML_ESCAPES[] = {
"",
"&quot;",
"&amp;",
"&#39;",
"&#47;",
"&lt;",
"&gt;",
"", // throw out control characters
};
void
houdini_escape_html0(struct buf *ob, const uint8_t *src, size_t size, int secure)
{
size_t i = 0, org, esc = 0;
bufgrow(ob, ESCAPE_GROW_FACTOR(size));
while (i < size) {
org = i;
while (i < size && (esc = HTML_ESCAPE_TABLE[src[i]]) == 0)
i++;
if (i > org)
bufput(ob, src + org, i - org);
/* escaping */
if (i >= size)
break;
/* The forward slash is only escaped in secure mode */
if (src[i] == '/' && !secure) {
bufputc(ob, '/');
} else if (HTML_ESCAPE_TABLE[src[i]] == 7) {
/* skip control characters */
} else {
bufputs(ob, HTML_ESCAPES[esc]);
}
i++;
}
}
void
houdini_escape_html(struct buf *ob, const uint8_t *src, size_t size)
{
houdini_escape_html0(ob, src, size, 1);
}

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/*
* Copyright (c) 2009, Natacha Porté
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "markdown.h"
#include "html.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <stdbool.h>
#include "houdini.h"
#define USE_XHTML(opt) (opt->flags & HTML_USE_XHTML)
int
sdhtml_is_tag(const uint8_t *tag_data, size_t tag_size, const char *tagname)
{
size_t i;
int closed = 0;
if (tag_size < 3 || tag_data[0] != '<')
return HTML_TAG_NONE;
i = 1;
if (tag_data[i] == '/') {
closed = 1;
i++;
}
for (; i < tag_size; ++i, ++tagname) {
if (*tagname == 0)
break;
if (tag_data[i] != *tagname)
return HTML_TAG_NONE;
}
if (i == tag_size)
return HTML_TAG_NONE;
if (isspace(tag_data[i]) || tag_data[i] == '>')
return closed ? HTML_TAG_CLOSE : HTML_TAG_OPEN;
return HTML_TAG_NONE;
}
static inline void escape_html(struct buf *ob, const uint8_t *source, size_t length)
{
houdini_escape_html0(ob, source, length, 0);
}
static inline void escape_href(struct buf *ob, const uint8_t *source, size_t length)
{
houdini_escape_href(ob, source, length);
}
/********************
* GENERIC RENDERER *
********************/
static int
rndr_autolink(struct buf *ob, const struct buf *link, enum mkd_autolink type, void *opaque)
{
struct html_renderopt *options = opaque;
uint8_t offset = 0;
if (!link || !link->size)
return 0;
if ((options->flags & HTML_SAFELINK) != 0 &&
!sd_autolink_issafe(link->data, link->size) &&
type != MKDA_EMAIL)
return 0;
BUFPUTSL(ob, "<a href=\"");
if (type == MKDA_EMAIL)
BUFPUTSL(ob, "mailto:");
escape_href(ob, link->data + offset, link->size - offset);
if (options->link_attributes) {
bufputc(ob, '\"');
options->link_attributes(ob, link, opaque);
bufputc(ob, '>');
} else {
BUFPUTSL(ob, "\">");
}
/*
* Pretty printing: if we get an email address as
* an actual URI, e.g. `mailto:foo@bar.com`, we don't
* want to print the `mailto:` prefix
*/
if (bufprefix(link, "mailto:") == 0) {
escape_html(ob, link->data + 7, link->size - 7);
} else {
escape_html(ob, link->data, link->size);
}
BUFPUTSL(ob, "</a>");
return 1;
}
static void
rndr_blockcode(struct buf *ob, const struct buf *text, const struct buf *lang, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
if (lang && lang->size) {
size_t i, cls;
BUFPUTSL(ob, "<pre><code class=\"");
for (i = 0, cls = 0; i < lang->size; ++i, ++cls) {
while (i < lang->size && isspace(lang->data[i]))
i++;
if (i < lang->size) {
size_t org = i;
while (i < lang->size && !isspace(lang->data[i]))
i++;
if (lang->data[org] == '.')
org++;
if (cls) bufputc(ob, ' ');
escape_html(ob, lang->data + org, i - org);
}
}
BUFPUTSL(ob, "\">");
} else
BUFPUTSL(ob, "<pre><code>");
if (text)
escape_html(ob, text->data, text->size);
BUFPUTSL(ob, "</code></pre>\n");
}
static void
rndr_blockquote(struct buf *ob, const struct buf *text, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, "<blockquote>\n");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</blockquote>\n");
}
static int
rndr_codespan(struct buf *ob, const struct buf *text, void *opaque)
{
BUFPUTSL(ob, "<code>");
if (text) escape_html(ob, text->data, text->size);
BUFPUTSL(ob, "</code>");
return 1;
}
static int
rndr_strikethrough(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size)
return 0;
BUFPUTSL(ob, "<del>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</del>");
return 1;
}
static int
rndr_double_emphasis(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size)
return 0;
BUFPUTSL(ob, "<strong>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</strong>");
return 1;
}
static int
rndr_emphasis(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<em>");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</em>");
return 1;
}
static int
rndr_linebreak(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
bufputs(ob, USE_XHTML(options) ? "<br/>\n" : "<br>\n");
return 1;
}
static void
rndr_header(struct buf *ob, const struct buf *text, int level, void *opaque)
{
struct html_renderopt *options = opaque;
if (ob->size)
bufputc(ob, '\n');
if (options->flags & HTML_TOC) {
bufprintf(ob, "<h%d id=\"", level);
if (options->toc_id_prefix) {
bufputs(ob, options->toc_id_prefix);
}
bufprintf(ob, "toc_%d\">", options->toc_data.header_count++);
} else {
bufprintf(ob, "<h%d>", level);
}
if (text) bufput(ob, text->data, text->size);
bufprintf(ob, "</h%d>\n", level);
}
static int
rndr_link(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *content, void *opaque)
{
struct html_renderopt *options = opaque;
if (link != NULL && (options->flags & HTML_SAFELINK) != 0 && !sd_autolink_issafe(link->data, link->size))
return 0;
BUFPUTSL(ob, "<a href=\"");
if (link && link->size)
escape_href(ob, link->data, link->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
escape_html(ob, title->data, title->size);
}
if (options->link_attributes) {
bufputc(ob, '\"');
options->link_attributes(ob, link, opaque);
bufputc(ob, '>');
} else {
BUFPUTSL(ob, "\">");
}
if (content && content->size) bufput(ob, content->data, content->size);
BUFPUTSL(ob, "</a>");
return 1;
}
static void
rndr_list(struct buf *ob, const struct buf *text, int flags, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
bufput(ob, flags & MKD_LIST_ORDERED ? "<ol>\n" : "<ul>\n", 5);
if (text) bufput(ob, text->data, text->size);
bufput(ob, flags & MKD_LIST_ORDERED ? "</ol>\n" : "</ul>\n", 6);
}
static void
rndr_listitem(struct buf *ob, const struct buf *text, int flags, void *opaque)
{
BUFPUTSL(ob, "<li>");
if (text) {
size_t size = text->size;
while (size && text->data[size - 1] == '\n')
size--;
bufput(ob, text->data, size);
}
BUFPUTSL(ob, "</li>\n");
}
static void
rndr_paragraph(struct buf *ob, const struct buf *text, void *opaque)
{
struct html_renderopt *options = opaque;
size_t i = 0;
if (ob->size) bufputc(ob, '\n');
if (!text || !text->size)
return;
while (i < text->size && isspace(text->data[i])) i++;
if (i == text->size)
return;
BUFPUTSL(ob, "<p>");
if (options->flags & HTML_HARD_WRAP) {
size_t org;
while (i < text->size) {
org = i;
while (i < text->size && text->data[i] != '\n')
i++;
if (i > org)
bufput(ob, text->data + org, i - org);
/*
* do not insert a line break if this newline
* is the last character on the paragraph
*/
if (i >= text->size - 1)
break;
rndr_linebreak(ob, opaque);
i++;
}
} else {
bufput(ob, &text->data[i], text->size - i);
}
BUFPUTSL(ob, "</p>\n");
}
static void
rndr_raw_block(struct buf *ob, const struct buf *text, void *opaque)
{
size_t org, sz;
if (!text) return;
sz = text->size;
while (sz > 0 && text->data[sz - 1] == '\n') sz--;
org = 0;
while (org < sz && text->data[org] == '\n') org++;
if (org >= sz) return;
if (ob->size) bufputc(ob, '\n');
bufput(ob, text->data + org, sz - org);
bufputc(ob, '\n');
}
static int
rndr_triple_emphasis(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<strong><em>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</em></strong>");
return 1;
}
static void
rndr_hrule(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
if (ob->size) bufputc(ob, '\n');
bufputs(ob, USE_XHTML(options) ? "<hr/>\n" : "<hr>\n");
}
static int
rndr_image(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *alt, void *opaque)
{
struct html_renderopt *options = opaque;
if (!link || !link->size) return 0;
BUFPUTSL(ob, "<img src=\"");
escape_href(ob, link->data, link->size);
BUFPUTSL(ob, "\" alt=\"");
if (alt && alt->size)
escape_html(ob, alt->data, alt->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
escape_html(ob, title->data, title->size); }
bufputs(ob, USE_XHTML(options) ? "\"/>" : "\">");
return 1;
}
static void
rndr_html_tag(struct buf *ob, const struct buf *text, void *opaque,
char* tagname, char** whitelist, int tagtype)
{
size_t i, x, z, in_str = 0, seen_equals = 0, done = 0, done_attr = 0, reset = 0;
struct buf *attr;
struct buf *value;
char c;
bufputc(ob, '<');
if(tagtype == HTML_TAG_CLOSE) {
bufputc(ob, '/');
bufputs(ob, tagname);
bufputc(ob, '>');
return;
}
bufputs(ob, tagname);
i = 1 + strlen(tagname);
attr = bufnew(16);
value = bufnew(16);
for(; i < text->size && !done; i++) {
c = text->data[i];
done = 0;
reset = 0;
done_attr = 0;
switch(c) {
case '>':
done = 1;
break;
case '\'':
case '"':
if(!seen_equals) {
reset = 1;
} else if(!in_str) {
in_str = c;
} else if(in_str == c) {
in_str = 0;
done_attr = 1;
} else {
bufputc(value, c);
}
break;
case ' ':
if (in_str) {
bufputc(value, ' ');
} else {
reset = 1;
}
break;
case '=':
if(seen_equals) {
reset = 1;
break;
}
seen_equals = 1;
break;
default:
if(seen_equals && in_str || !seen_equals) {
bufputc(seen_equals ? value : attr, c);
}
break;
}
if(done_attr) {
int valid = 0;
for(z = 0; whitelist[z]; z++) {
if(strlen(whitelist[z]) != attr->size) {
continue;
}
for(x = 0; x < attr->size; x++) {
if(tolower(whitelist[z][x]) != tolower(attr->data[x])) {
break;
}
}
if(x == attr->size) {
valid = 1;
break;
}
}
if(valid && value->size && attr->size) {
bufputc(ob, ' ');
escape_html(ob, attr->data, attr->size);
bufputs(ob, "=\"");
escape_html(ob, value->data, value->size);
bufputc(ob, '"');
}
reset = 1;
}
if(reset) {
seen_equals = 0;
in_str = 0;
bufreset(attr);
bufreset(value);
}
}
bufrelease(attr);
bufrelease(value);
bufputc(ob, '>');
}
static int
rndr_raw_html(struct buf *ob, const struct buf *text, void *opaque)
{
struct html_renderopt *options = opaque;
char** whitelist = options->html_element_whitelist;
int i, tagtype;
/* Items on the whitelist ignore all other flags and just output */
if (((options->flags & HTML_ALLOW_ELEMENT_WHITELIST) != 0) && whitelist) {
for (i = 0; whitelist[i]; i++) {
tagtype = sdhtml_is_tag(text->data, text->size, whitelist[i]);
if (tagtype != HTML_TAG_NONE) {
rndr_html_tag(ob, text, opaque,
whitelist[i],
options->html_attr_whitelist,
tagtype);
return 1;
}
}
}
/* HTML_ESCAPE overrides SKIP_HTML, SKIP_STYLE, SKIP_LINKS and SKIP_IMAGES
* It doens't see if there are any valid tags, just escape all of them. */
if((options->flags & HTML_ESCAPE) != 0) {
escape_html(ob, text->data, text->size);
return 1;
}
if ((options->flags & HTML_SKIP_HTML) != 0)
return 1;
if ((options->flags & HTML_SKIP_STYLE) != 0 &&
sdhtml_is_tag(text->data, text->size, "style"))
return 1;
if ((options->flags & HTML_SKIP_LINKS) != 0 &&
sdhtml_is_tag(text->data, text->size, "a"))
return 1;
if ((options->flags & HTML_SKIP_IMAGES) != 0 &&
sdhtml_is_tag(text->data, text->size, "img"))
return 1;
bufput(ob, text->data, text->size);
return 1;
}
static void
rndr_table(struct buf *ob, const struct buf *header, const struct buf *body, void *opaque)
{
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, "<table><thead>\n");
if (header)
bufput(ob, header->data, header->size);
BUFPUTSL(ob, "</thead><tbody>\n");
if (body)
bufput(ob, body->data, body->size);
BUFPUTSL(ob, "</tbody></table>\n");
}
static void
rndr_tablerow(struct buf *ob, const struct buf *text, void *opaque)
{
BUFPUTSL(ob, "<tr>\n");
if (text)
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</tr>\n");
}
static void
rndr_tablecell(struct buf *ob, const struct buf *text, int flags, void *opaque, int col_span)
{
if (flags & MKD_TABLE_HEADER) {
BUFPUTSL(ob, "<th");
} else {
BUFPUTSL(ob, "<td");
}
if (col_span > 1) {
bufprintf(ob, " colspan=\"%d\" ", col_span);
}
switch (flags & MKD_TABLE_ALIGNMASK) {
case MKD_TABLE_ALIGN_CENTER:
BUFPUTSL(ob, " align=\"center\">");
break;
case MKD_TABLE_ALIGN_L:
BUFPUTSL(ob, " align=\"left\">");
break;
case MKD_TABLE_ALIGN_R:
BUFPUTSL(ob, " align=\"right\">");
break;
default:
BUFPUTSL(ob, ">");
}
if (text)
bufput(ob, text->data, text->size);
if (flags & MKD_TABLE_HEADER) {
BUFPUTSL(ob, "</th>\n");
} else {
BUFPUTSL(ob, "</td>\n");
}
}
static int
rndr_superscript(struct buf *ob, const struct buf *text, void *opaque)
{
if (!text || !text->size) return 0;
BUFPUTSL(ob, "<sup>");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "</sup>");
return 1;
}
static void
rndr_normal_text(struct buf *ob, const struct buf *text, void *opaque)
{
if (text)
escape_html(ob, text->data, text->size);
}
static void
toc_header(struct buf *ob, const struct buf *text, int level, void *opaque)
{
struct html_renderopt *options = opaque;
/* set the level offset if this is the first header
* we're parsing for the document */
if (options->toc_data.current_level == 0) {
BUFPUTSL(ob, "<div class=\"toc\">\n");
options->toc_data.level_offset = level - 1;
}
level -= options->toc_data.level_offset;
if (level > options->toc_data.current_level) {
while (level > options->toc_data.current_level) {
BUFPUTSL(ob, "<ul>\n<li>\n");
options->toc_data.current_level++;
}
} else if (level < options->toc_data.current_level) {
BUFPUTSL(ob, "</li>\n");
while (level < options->toc_data.current_level) {
BUFPUTSL(ob, "</ul>\n</li>\n");
options->toc_data.current_level--;
}
BUFPUTSL(ob,"<li>\n");
} else {
BUFPUTSL(ob,"</li>\n<li>\n");
}
BUFPUTSL(ob, "<a href=\"#");
if (options->toc_id_prefix) {
bufputs(ob, options->toc_id_prefix);
}
bufprintf(ob, "toc_%d\">", options->toc_data.header_count++);
if (text)
escape_html(ob, text->data, text->size);
BUFPUTSL(ob, "</a>\n");
}
static int
toc_link(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *content, void *opaque)
{
if (content && content->size)
bufput(ob, content->data, content->size);
return 1;
}
static void
reset_toc(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
memset(&(options->toc_data), 0, sizeof(options->toc_data));
}
static void
toc_finalize(struct buf *ob, void *opaque)
{
struct html_renderopt *options = opaque;
bool has_toc = false;
while (options->toc_data.current_level > 0) {
BUFPUTSL(ob, "</li>\n</ul>\n");
options->toc_data.current_level--;
has_toc = true;
}
if(has_toc) {
BUFPUTSL(ob, "</div>\n");
}
reset_toc(ob, opaque);
}
void
sdhtml_toc_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options)
{
static const struct sd_callbacks cb_default = {
NULL,
NULL,
NULL,
toc_header,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
rndr_codespan,
rndr_double_emphasis,
rndr_emphasis,
NULL,
NULL,
toc_link,
NULL,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,
NULL,
NULL,
toc_finalize,
};
memset(options, 0x0, sizeof(struct html_renderopt));
options->flags = HTML_TOC | HTML_SKIP_HTML;
memcpy(callbacks, &cb_default, sizeof(struct sd_callbacks));
}
void
sdhtml_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options, unsigned int render_flags)
{
static const struct sd_callbacks cb_default = {
rndr_blockcode,
rndr_blockquote,
rndr_raw_block,
rndr_header,
rndr_hrule,
rndr_list,
rndr_listitem,
rndr_paragraph,
rndr_table,
rndr_tablerow,
rndr_tablecell,
rndr_autolink,
rndr_codespan,
rndr_double_emphasis,
rndr_emphasis,
rndr_image,
rndr_linebreak,
rndr_link,
rndr_raw_html,
rndr_triple_emphasis,
rndr_strikethrough,
rndr_superscript,
NULL,
rndr_normal_text,
NULL,
reset_toc,
};
/* Prepare the options pointer */
memset(options, 0x0, sizeof(struct html_renderopt));
options->flags = render_flags;
/* Prepare the callbacks */
memcpy(callbacks, &cb_default, sizeof(struct sd_callbacks));
if (render_flags & HTML_SKIP_IMAGES)
callbacks->image = NULL;
if (render_flags & HTML_SKIP_LINKS) {
callbacks->link = NULL;
callbacks->autolink = NULL;
}
if (render_flags & HTML_SKIP_HTML || render_flags & HTML_ESCAPE)
callbacks->blockhtml = NULL;
}

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UPSKIRT_HTML_H
#define UPSKIRT_HTML_H
#include "markdown.h"
#include "buffer.h"
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
struct html_renderopt {
struct {
int header_count;
int current_level;
int level_offset;
} toc_data;
char* toc_id_prefix;
unsigned int flags;
char** html_element_whitelist;
char** html_attr_whitelist;
/* extra callbacks */
void (*link_attributes)(struct buf *ob, const struct buf *url, void *self);
};
typedef enum {
HTML_SKIP_HTML = (1 << 0),
HTML_SKIP_STYLE = (1 << 1),
HTML_SKIP_IMAGES = (1 << 2),
HTML_SKIP_LINKS = (1 << 3),
HTML_EXPAND_TABS = (1 << 4),
HTML_SAFELINK = (1 << 5),
HTML_TOC = (1 << 6),
HTML_HARD_WRAP = (1 << 7),
HTML_USE_XHTML = (1 << 8),
HTML_ESCAPE = (1 << 9),
HTML_ALLOW_ELEMENT_WHITELIST = (1 << 10),
} html_render_mode;
typedef enum {
HTML_TAG_NONE = 0,
HTML_TAG_OPEN,
HTML_TAG_CLOSE,
} html_tag;
int
sdhtml_is_tag(const uint8_t *tag_data, size_t tag_size, const char *tagname);
extern void
sdhtml_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options_ptr, unsigned int render_flags);
extern void
sdhtml_toc_renderer(struct sd_callbacks *callbacks, struct html_renderopt *options_ptr);
extern void
sdhtml_smartypants(struct buf *ob, const uint8_t *text, size_t size);
#ifdef __cplusplus
}
#endif
#endif

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "buffer.h"
#include "html.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#if defined(_WIN32)
#define snprintf _snprintf
#endif
struct smartypants_data {
int in_squote;
int in_dquote;
};
static size_t smartypants_cb__ltag(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__dquote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__amp(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__period(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__number(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__dash(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__parens(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__squote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__backtick(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__escape(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t (*smartypants_cb_ptrs[])
(struct buf *, struct smartypants_data *, uint8_t, const uint8_t *, size_t) =
{
NULL, /* 0 */
smartypants_cb__dash, /* 1 */
smartypants_cb__parens, /* 2 */
smartypants_cb__squote, /* 3 */
smartypants_cb__dquote, /* 4 */
smartypants_cb__amp, /* 5 */
smartypants_cb__period, /* 6 */
smartypants_cb__number, /* 7 */
smartypants_cb__ltag, /* 8 */
smartypants_cb__backtick, /* 9 */
smartypants_cb__escape, /* 10 */
};
static const uint8_t smartypants_cb_chars[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 4, 0, 0, 0, 5, 3, 2, 0, 0, 0, 0, 1, 6, 0,
0, 7, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0,
9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static inline int
word_boundary(uint8_t c)
{
return c == 0 || isspace(c) || ispunct(c);
}
static int
smartypants_quotes(struct buf *ob, uint8_t previous_char, uint8_t next_char, uint8_t quote, int *is_open)
{
char ent[8];
if (*is_open && !word_boundary(next_char))
return 0;
if (!(*is_open) && !word_boundary(previous_char))
return 0;
snprintf(ent, sizeof(ent), "&%c%cquo;", (*is_open) ? 'r' : 'l', quote);
*is_open = !(*is_open);
bufputs(ob, ent);
return 1;
}
static size_t
smartypants_cb__squote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 2) {
uint8_t t1 = tolower(text[1]);
if (t1 == '\'') {
if (smartypants_quotes(ob, previous_char, size >= 3 ? text[2] : 0, 'd', &smrt->in_dquote))
return 1;
}
if ((t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') &&
(size == 3 || word_boundary(text[2]))) {
BUFPUTSL(ob, "&rsquo;");
return 0;
}
if (size >= 3) {
uint8_t t2 = tolower(text[2]);
if (((t1 == 'r' && t2 == 'e') ||
(t1 == 'l' && t2 == 'l') ||
(t1 == 'v' && t2 == 'e')) &&
(size == 4 || word_boundary(text[3]))) {
BUFPUTSL(ob, "&rsquo;");
return 0;
}
}
}
if (smartypants_quotes(ob, previous_char, size > 0 ? text[1] : 0, 's', &smrt->in_squote))
return 0;
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__parens(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 3) {
uint8_t t1 = tolower(text[1]);
uint8_t t2 = tolower(text[2]);
if (t1 == 'c' && t2 == ')') {
BUFPUTSL(ob, "&copy;");
return 2;
}
if (t1 == 'r' && t2 == ')') {
BUFPUTSL(ob, "&reg;");
return 2;
}
if (size >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')') {
BUFPUTSL(ob, "&trade;");
return 3;
}
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__dash(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 3 && text[1] == '-' && text[2] == '-') {
BUFPUTSL(ob, "&mdash;");
return 2;
}
if (size >= 2 && text[1] == '-') {
BUFPUTSL(ob, "&ndash;");
return 1;
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__amp(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 6 && memcmp(text, "&quot;", 6) == 0) {
if (smartypants_quotes(ob, previous_char, size >= 7 ? text[6] : 0, 'd', &smrt->in_dquote))
return 5;
}
if (size >= 4 && memcmp(text, "&#0;", 4) == 0)
return 3;
bufputc(ob, '&');
return 0;
}
static size_t
smartypants_cb__period(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 3 && text[1] == '.' && text[2] == '.') {
BUFPUTSL(ob, "&hellip;");
return 2;
}
if (size >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.') {
BUFPUTSL(ob, "&hellip;");
return 4;
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__backtick(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 2 && text[1] == '`') {
if (smartypants_quotes(ob, previous_char, size >= 3 ? text[2] : 0, 'd', &smrt->in_dquote))
return 1;
}
return 0;
}
static size_t
smartypants_cb__number(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (word_boundary(previous_char) && size >= 3) {
if (text[0] == '1' && text[1] == '/' && text[2] == '2') {
if (size == 3 || word_boundary(text[3])) {
BUFPUTSL(ob, "&frac12;");
return 2;
}
}
if (text[0] == '1' && text[1] == '/' && text[2] == '4') {
if (size == 3 || word_boundary(text[3]) ||
(size >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h')) {
BUFPUTSL(ob, "&frac14;");
return 2;
}
}
if (text[0] == '3' && text[1] == '/' && text[2] == '4') {
if (size == 3 || word_boundary(text[3]) ||
(size >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's')) {
BUFPUTSL(ob, "&frac34;");
return 2;
}
}
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__dquote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (!smartypants_quotes(ob, previous_char, size > 0 ? text[1] : 0, 'd', &smrt->in_dquote))
BUFPUTSL(ob, "&quot;");
return 0;
}
static size_t
smartypants_cb__ltag(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
static const char *skip_tags[] = {
"pre", "code", "var", "samp", "kbd", "math", "script", "style"
};
static const size_t skip_tags_count = 8;
size_t tag, i = 0;
while (i < size && text[i] != '>')
i++;
for (tag = 0; tag < skip_tags_count; ++tag) {
if (sdhtml_is_tag(text, size, skip_tags[tag]) == HTML_TAG_OPEN)
break;
}
if (tag < skip_tags_count) {
for (;;) {
while (i < size && text[i] != '<')
i++;
if (i == size)
break;
if (sdhtml_is_tag(text + i, size - i, skip_tags[tag]) == HTML_TAG_CLOSE)
break;
i++;
}
while (i < size && text[i] != '>')
i++;
}
bufput(ob, text, i + 1);
return i;
}
static size_t
smartypants_cb__escape(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size < 2)
return 0;
switch (text[1]) {
case '\\':
case '"':
case '\'':
case '.':
case '-':
case '`':
bufputc(ob, text[1]);
return 1;
default:
bufputc(ob, '\\');
return 0;
}
}
#if 0
static struct {
uint8_t c0;
const uint8_t *pattern;
const uint8_t *entity;
int skip;
} smartypants_subs[] = {
{ '\'', "'s>", "&rsquo;", 0 },
{ '\'', "'t>", "&rsquo;", 0 },
{ '\'', "'re>", "&rsquo;", 0 },
{ '\'', "'ll>", "&rsquo;", 0 },
{ '\'', "'ve>", "&rsquo;", 0 },
{ '\'', "'m>", "&rsquo;", 0 },
{ '\'', "'d>", "&rsquo;", 0 },
{ '-', "--", "&mdash;", 1 },
{ '-', "<->", "&ndash;", 0 },
{ '.', "...", "&hellip;", 2 },
{ '.', ". . .", "&hellip;", 4 },
{ '(', "(c)", "&copy;", 2 },
{ '(', "(r)", "&reg;", 2 },
{ '(', "(tm)", "&trade;", 3 },
{ '3', "<3/4>", "&frac34;", 2 },
{ '3', "<3/4ths>", "&frac34;", 2 },
{ '1', "<1/2>", "&frac12;", 2 },
{ '1', "<1/4>", "&frac14;", 2 },
{ '1', "<1/4th>", "&frac14;", 2 },
{ '&', "&#0;", 0, 3 },
};
#endif
void
sdhtml_smartypants(struct buf *ob, const uint8_t *text, size_t size)
{
size_t i;
struct smartypants_data smrt = {0, 0};
if (!text)
return;
bufgrow(ob, size);
for (i = 0; i < size; ++i) {
size_t org;
uint8_t action = 0;
org = i;
while (i < size && (action = smartypants_cb_chars[text[i]]) == 0)
i++;
if (i > org)
bufput(ob, text + org, i - org);
if (i < size) {
i += smartypants_cb_ptrs[(int)action]
(ob, &smrt, i ? text[i - 1] : 0, text + i, size - i);
}
}
}

25
SnudownTest/html_block_names.txt Normal file
View File

@ -0,0 +1,25 @@
##
p
dl
h1
h2
h3
h4
h5
h6
ol
ul
del
div
ins
pre
form
math
table
figure
iframe
script
style
fieldset
noscript
blockquote

206
SnudownTest/html_blocks.h Normal file
View File

@ -0,0 +1,206 @@
/* C code produced by gperf version 3.0.3 */
/* Command-line: gperf -N find_block_tag -H hash_block_tag -C -c -E --ignore-case html_block_names.txt */
/* Computed positions: -k'1-2' */
#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
&& ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
&& (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
&& ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
&& ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
&& ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
&& ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
&& ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
&& ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
&& ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
&& ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
&& ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
&& ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
&& ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
&& ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
&& ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
&& ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
&& ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
&& ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
&& ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
&& ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
&& ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
&& ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
/* The character set is not based on ISO-646. */
error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
#endif
/* maximum key range = 37, duplicates = 0 */
#ifndef GPERF_DOWNCASE
#define GPERF_DOWNCASE 1
static unsigned char gperf_downcase[256] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106,
107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119,
120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134,
135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164,
165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179,
180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194,
195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209,
210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224,
225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254,
255
};
#endif
#ifndef GPERF_CASE_STRNCMP
#define GPERF_CASE_STRNCMP 1
static int
gperf_case_strncmp (s1, s2, n)
register const char *s1;
register const char *s2;
register unsigned int n;
{
for (; n > 0;)
{
unsigned char c1 = gperf_downcase[(unsigned char)*s1++];
unsigned char c2 = gperf_downcase[(unsigned char)*s2++];
if (c1 != 0 && c1 == c2)
{
n--;
continue;
}
return (int)c1 - (int)c2;
}
return 0;
}
#endif
#ifdef __GNUC__
__inline
#else
#ifdef __cplusplus
inline
#endif
#endif
static unsigned int
hash_block_tag (str, len)
register const char *str;
register unsigned int len;
{
static const unsigned char asso_values[] =
{
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
8, 30, 25, 20, 15, 10, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 0, 38, 0, 38,
5, 5, 5, 15, 0, 38, 38, 0, 15, 10,
0, 38, 38, 15, 0, 5, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 0, 38,
0, 38, 5, 5, 5, 15, 0, 38, 38, 0,
15, 10, 0, 38, 38, 15, 0, 5, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38
};
register int hval = len;
switch (hval)
{
default:
hval += asso_values[(unsigned char)str[1]+1];
/*FALLTHROUGH*/
case 1:
hval += asso_values[(unsigned char)str[0]];
break;
}
return hval;
}
#ifdef __GNUC__
__inline
#ifdef __GNUC_STDC_INLINE__
__attribute__ ((__gnu_inline__))
#endif
#endif
const char *
find_block_tag (str, len)
register const char *str;
register unsigned int len;
{
enum
{
TOTAL_KEYWORDS = 24,
MIN_WORD_LENGTH = 1,
MAX_WORD_LENGTH = 10,
MIN_HASH_VALUE = 1,
MAX_HASH_VALUE = 37
};
static const char * const wordlist[] =
{
"",
"p",
"dl",
"div",
"math",
"table",
"",
"ul",
"del",
"form",
"blockquote",
"figure",
"ol",
"fieldset",
"",
"h1",
"",
"h6",
"pre",
"", "",
"script",
"h5",
"noscript",
"",
"style",
"iframe",
"h4",
"ins",
"", "", "",
"h3",
"", "", "", "",
"h2"
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
{
register int key = hash_block_tag (str, len);
if (key <= MAX_HASH_VALUE && key >= 0)
{
register const char *s = wordlist[key];
if ((((unsigned char)*str ^ (unsigned char)*s) & ~32) == 0 && !gperf_case_strncmp (str, s, len) && s[len] == '\0')
return s;
}
}
return 0;
}

292
SnudownTest/html_entities.gperf Normal file
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@ -0,0 +1,292 @@
%language=ANSI-C
%define lookup-function-name is_allowed_named_entity
%compare-strncmp
%readonly-tables
%define hash-function-name hash_html_entity
%enum
%includes
%{
#include <stdlib.h>
/* Parsers tend to choke on entities with values greater than this */
const u_int32_t MAX_NUM_ENTITY_VAL = 0x10ffff;
/* Any numeric entity longer than this is obviously above MAX_NUM_ENTITY_VAL
* used to avoid dealing with overflows. */
const size_t MAX_NUM_ENTITY_LEN = 7;
inline int is_valid_numeric_entity(uint32_t entity_val)
{
/* Some XML parsers will choke on entities with certain
* values (mostly control characters.)
*
* According to lxml these are all problematic:
*
* [xrange(0, 8),
* xrange(11, 12),
* xrange(14, 31),
* xrange(55296, 57343),
* xrange(65534, 65535)]
*/
return (entity_val > 8
&& (entity_val != 11 && entity_val != 12)
&& (entity_val < 14 || entity_val > 31)
&& (entity_val < 55296 || entity_val > 57343)
&& (entity_val != 65534 && entity_val != 65535)
&& entity_val <= MAX_NUM_ENTITY_VAL);
}
%}
%%
&AElig;
&Aacute;
&Acirc;
&Agrave;
&Alpha;
&Aring;
&Atilde;
&Auml;
&Beta;
&Ccedil;
&Chi;
&Dagger;
&Delta;
&ETH;
&Eacute;
&Ecirc;
&Egrave;
&Epsilon;
&Eta;
&Euml;
&Gamma;
&Iacute;
&Icirc;
&Igrave;
&Iota;
&Iuml;
&Kappa;
&Lambda;
&Mu;
&Ntilde;
&Nu;
&OElig;
&Oacute;
&Ocirc;
&Ograve;
&Omega;
&Omicron;
&Oslash;
&Otilde;
&Ouml;
&Phi;
&Pi;
&Prime;
&Psi;
&Rho;
&Scaron;
&Sigma;
&THORN;
&Tau;
&Theta;
&Uacute;
&Ucirc;
&Ugrave;
&Upsilon;
&Uuml;
&Xi;
&Yacute;
&Yuml;
&Zeta;
&aacute;
&acirc;
&acute;
&aelig;
&agrave;
&alefsym;
&alpha;
&amp;
&and;
&ang;
&apos;
&aring;
&asymp;
&atilde;
&auml;
&bdquo;
&beta;
&brvbar;
&bull;
&cap;
&ccedil;
&cedil;
&cent;
&chi;
&circ;
&clubs;
&cong;
&copy;
&crarr;
&cup;
&curren;
&dArr;
&dagger;
&darr;
&deg;
&delta;
&diams;
&divide;
&eacute;
&ecirc;
&egrave;
&empty;
&emsp;
&ensp;
&epsilon;
&equiv;
&eta;
&eth;
&euml;
&euro;
&exist;
&fnof;
&forall;
&frac12;
&frac14;
&frac34;
&frasl;
&gamma;
&ge;
&gt;
&hArr;
&harr;
&hearts;
&hellip;
&iacute;
&icirc;
&iexcl;
&igrave;
&image;
&infin;
&int;
&iota;
&iquest;
&isin;
&iuml;
&kappa;
&lArr;
&lambda;
&lang;
&laquo;
&larr;
&lceil;
&ldquo;
&le;
&lfloor;
&lowast;
&loz;
&lrm;
&lsaquo;
&lsquo;
&lt;
&macr;
&mdash;
&micro;
&middot;
&minus;
&mu;
&nabla;
&nbsp;
&ndash;
&ne;
&ni;
&not;
&notin;
&nsub;
&ntilde;
&nu;
&oacute;
&ocirc;
&oelig;
&ograve;
&oline;
&omega;
&omicron;
&oplus;
&or;
&ordf;
&ordm;
&oslash;
&otilde;
&otimes;
&ouml;
&para;
&part;
&permil;
&perp;
&phi;
&pi;
&piv;
&plusmn;
&pound;
&prime;
&prod;
&prop;
&psi;
&quot;
&rArr;
&radic;
&rang;
&raquo;
&rarr;
&rceil;
&rdquo;
&real;
&reg;
&rfloor;
&rho;
&rlm;
&rsaquo;
&rsquo;
&sbquo;
&scaron;
&sdot;
&sect;
&shy;
&sigma;
&sigmaf;
&sim;
&spades;
&sub;
&sube;
&sum;
&sup1;
&sup2;
&sup3;
&sup;
&supe;
&szlig;
&tau;
&there4;
&theta;
&thetasym;
&thinsp;
&thorn;
&tilde;
&times;
&trade;
&uArr;
&uacute;
&uarr;
&ucirc;
&ugrave;
&uml;
&upsih;
&upsilon;
&uuml;
&weierp;
&xi;
&yacute;
&yen;
&yuml;
&zeta;
&zwj;
&zwnj;

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "buffer.h"
#include "html.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#if defined(_WIN32)
#define snprintf _snprintf
#endif
struct smartypants_data {
int in_squote;
int in_dquote;
};
static size_t smartypants_cb__ltag(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__dquote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__amp(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__period(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__number(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__dash(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__parens(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__squote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__backtick(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t smartypants_cb__escape(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size);
static size_t (*smartypants_cb_ptrs[])
(struct buf *, struct smartypants_data *, uint8_t, const uint8_t *, size_t) =
{
NULL, /* 0 */
smartypants_cb__dash, /* 1 */
smartypants_cb__parens, /* 2 */
smartypants_cb__squote, /* 3 */
smartypants_cb__dquote, /* 4 */
smartypants_cb__amp, /* 5 */
smartypants_cb__period, /* 6 */
smartypants_cb__number, /* 7 */
smartypants_cb__ltag, /* 8 */
smartypants_cb__backtick, /* 9 */
smartypants_cb__escape, /* 10 */
};
static const uint8_t smartypants_cb_chars[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 4, 0, 0, 0, 5, 3, 2, 0, 0, 0, 0, 1, 6, 0,
0, 7, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0,
9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static inline int
word_boundary(uint8_t c)
{
return c == 0 || isspace(c) || ispunct(c);
}
static int
smartypants_quotes(struct buf *ob, uint8_t previous_char, uint8_t next_char, uint8_t quote, int *is_open)
{
char ent[8];
if (*is_open && !word_boundary(next_char))
return 0;
if (!(*is_open) && !word_boundary(previous_char))
return 0;
snprintf(ent, sizeof(ent), "&%c%cquo;", (*is_open) ? 'r' : 'l', quote);
*is_open = !(*is_open);
bufputs(ob, ent);
return 1;
}
static size_t
smartypants_cb__squote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 2) {
uint8_t t1 = tolower(text[1]);
if (t1 == '\'') {
if (smartypants_quotes(ob, previous_char, size >= 3 ? text[2] : 0, 'd', &smrt->in_dquote))
return 1;
}
if ((t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') &&
(size == 3 || word_boundary(text[2]))) {
BUFPUTSL(ob, "&rsquo;");
return 0;
}
if (size >= 3) {
uint8_t t2 = tolower(text[2]);
if (((t1 == 'r' && t2 == 'e') ||
(t1 == 'l' && t2 == 'l') ||
(t1 == 'v' && t2 == 'e')) &&
(size == 4 || word_boundary(text[3]))) {
BUFPUTSL(ob, "&rsquo;");
return 0;
}
}
}
if (smartypants_quotes(ob, previous_char, size > 0 ? text[1] : 0, 's', &smrt->in_squote))
return 0;
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__parens(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 3) {
uint8_t t1 = tolower(text[1]);
uint8_t t2 = tolower(text[2]);
if (t1 == 'c' && t2 == ')') {
BUFPUTSL(ob, "&copy;");
return 2;
}
if (t1 == 'r' && t2 == ')') {
BUFPUTSL(ob, "&reg;");
return 2;
}
if (size >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')') {
BUFPUTSL(ob, "&trade;");
return 3;
}
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__dash(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 3 && text[1] == '-' && text[2] == '-') {
BUFPUTSL(ob, "&mdash;");
return 2;
}
if (size >= 2 && text[1] == '-') {
BUFPUTSL(ob, "&ndash;");
return 1;
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__amp(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 6 && memcmp(text, "&quot;", 6) == 0) {
if (smartypants_quotes(ob, previous_char, size >= 7 ? text[6] : 0, 'd', &smrt->in_dquote))
return 5;
}
if (size >= 4 && memcmp(text, "&#0;", 4) == 0)
return 3;
bufputc(ob, '&');
return 0;
}
static size_t
smartypants_cb__period(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 3 && text[1] == '.' && text[2] == '.') {
BUFPUTSL(ob, "&hellip;");
return 2;
}
if (size >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.') {
BUFPUTSL(ob, "&hellip;");
return 4;
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__backtick(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size >= 2 && text[1] == '`') {
if (smartypants_quotes(ob, previous_char, size >= 3 ? text[2] : 0, 'd', &smrt->in_dquote))
return 1;
}
return 0;
}
static size_t
smartypants_cb__number(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (word_boundary(previous_char) && size >= 3) {
if (text[0] == '1' && text[1] == '/' && text[2] == '2') {
if (size == 3 || word_boundary(text[3])) {
BUFPUTSL(ob, "&frac12;");
return 2;
}
}
if (text[0] == '1' && text[1] == '/' && text[2] == '4') {
if (size == 3 || word_boundary(text[3]) ||
(size >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h')) {
BUFPUTSL(ob, "&frac14;");
return 2;
}
}
if (text[0] == '3' && text[1] == '/' && text[2] == '4') {
if (size == 3 || word_boundary(text[3]) ||
(size >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's')) {
BUFPUTSL(ob, "&frac34;");
return 2;
}
}
}
bufputc(ob, text[0]);
return 0;
}
static size_t
smartypants_cb__dquote(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (!smartypants_quotes(ob, previous_char, size > 0 ? text[1] : 0, 'd', &smrt->in_dquote))
BUFPUTSL(ob, "&quot;");
return 0;
}
static size_t
smartypants_cb__ltag(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
static const char *skip_tags[] = {
"pre", "code", "var", "samp", "kbd", "math", "script", "style"
};
static const size_t skip_tags_count = 8;
size_t tag, i = 0;
while (i < size && text[i] != '>')
i++;
for (tag = 0; tag < skip_tags_count; ++tag) {
if (sdhtml_is_tag(text, size, skip_tags[tag]) == HTML_TAG_OPEN)
break;
}
if (tag < skip_tags_count) {
for (;;) {
while (i < size && text[i] != '<')
i++;
if (i == size)
break;
if (sdhtml_is_tag(text + i, size - i, skip_tags[tag]) == HTML_TAG_CLOSE)
break;
i++;
}
while (i < size && text[i] != '>')
i++;
}
bufput(ob, text, i + 1);
return i;
}
static size_t
smartypants_cb__escape(struct buf *ob, struct smartypants_data *smrt, uint8_t previous_char, const uint8_t *text, size_t size)
{
if (size < 2)
return 0;
switch (text[1]) {
case '\\':
case '"':
case '\'':
case '.':
case '-':
case '`':
bufputc(ob, text[1]);
return 1;
default:
bufputc(ob, '\\');
return 0;
}
}
#if 0
static struct {
uint8_t c0;
const uint8_t *pattern;
const uint8_t *entity;
int skip;
} smartypants_subs[] = {
{ '\'', "'s>", "&rsquo;", 0 },
{ '\'', "'t>", "&rsquo;", 0 },
{ '\'', "'re>", "&rsquo;", 0 },
{ '\'', "'ll>", "&rsquo;", 0 },
{ '\'', "'ve>", "&rsquo;", 0 },
{ '\'', "'m>", "&rsquo;", 0 },
{ '\'', "'d>", "&rsquo;", 0 },
{ '-', "--", "&mdash;", 1 },
{ '-', "<->", "&ndash;", 0 },
{ '.', "...", "&hellip;", 2 },
{ '.', ". . .", "&hellip;", 4 },
{ '(', "(c)", "&copy;", 2 },
{ '(', "(r)", "&reg;", 2 },
{ '(', "(tm)", "&trade;", 3 },
{ '3', "<3/4>", "&frac34;", 2 },
{ '3', "<3/4ths>", "&frac34;", 2 },
{ '1', "<1/2>", "&frac12;", 2 },
{ '1', "<1/4>", "&frac14;", 2 },
{ '1', "<1/4th>", "&frac14;", 2 },
{ '&', "&#0;", 0, 3 },
};
#endif
void
sdhtml_smartypants(struct buf *ob, const uint8_t *text, size_t size)
{
size_t i;
struct smartypants_data smrt = {0, 0};
if (!text)
return;
bufgrow(ob, size);
for (i = 0; i < size; ++i) {
size_t org;
uint8_t action = 0;
org = i;
while (i < size && (action = smartypants_cb_chars[text[i]]) == 0)
i++;
if (i > org)
bufput(ob, text + org, i - org);
if (i < size) {
i += smartypants_cb_ptrs[(int)action]
(ob, &smrt, i ? text[i - 1] : 0, text + i, size - i);
}
}
}

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/* markdown.h - generic markdown parser */
/*
* Copyright (c) 2009, Natacha Porté
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UPSKIRT_MARKDOWN_H
#define UPSKIRT_MARKDOWN_H
#include "buffer.h"
#include "autolink.h"
#ifdef __cplusplus
extern "C" {
#endif
#define SUNDOWN_VERSION "1.16.0"
#define SUNDOWN_VER_MAJOR 1
#define SUNDOWN_VER_MINOR 16
#define SUNDOWN_VER_REVISION 0
/********************
* TYPE DEFINITIONS *
********************/
/* mkd_autolink - type of autolink */
enum mkd_autolink {
MKDA_NOT_AUTOLINK, /* used internally when it is not an autolink*/
MKDA_NORMAL, /* normal http/http/ftp/mailto/etc link */
MKDA_EMAIL, /* e-mail link without explit mailto: */
};
enum mkd_tableflags {
MKD_TABLE_ALIGN_L = 1,
MKD_TABLE_ALIGN_R = 2,
MKD_TABLE_ALIGN_CENTER = 3,
MKD_TABLE_ALIGNMASK = 3,
MKD_TABLE_HEADER = 4
};
enum mkd_extensions {
MKDEXT_NO_INTRA_EMPHASIS = (1 << 0),
MKDEXT_TABLES = (1 << 1),
MKDEXT_FENCED_CODE = (1 << 2),
MKDEXT_AUTOLINK = (1 << 3),
MKDEXT_STRIKETHROUGH = (1 << 4),
MKDEXT_SPACE_HEADERS = (1 << 6),
MKDEXT_SUPERSCRIPT = (1 << 7),
MKDEXT_LAX_SPACING = (1 << 8),
MKDEXT_NO_EMAIL_AUTOLINK = (1 << 9),
};
/* sd_callbacks - functions for rendering parsed data */
struct sd_callbacks {
/* block level callbacks - NULL skips the block */
void (*blockcode)(struct buf *ob, const struct buf *text, const struct buf *lang, void *opaque);
void (*blockquote)(struct buf *ob, const struct buf *text, void *opaque);
void (*blockhtml)(struct buf *ob,const struct buf *text, void *opaque);
void (*header)(struct buf *ob, const struct buf *text, int level, void *opaque);
void (*hrule)(struct buf *ob, void *opaque);
void (*list)(struct buf *ob, const struct buf *text, int flags, void *opaque);
void (*listitem)(struct buf *ob, const struct buf *text, int flags, void *opaque);
void (*paragraph)(struct buf *ob, const struct buf *text, void *opaque);
void (*table)(struct buf *ob, const struct buf *header, const struct buf *body, void *opaque);
void (*table_row)(struct buf *ob, const struct buf *text, void *opaque);
void (*table_cell)(struct buf *ob, const struct buf *text, int flags, void *opaque, int col_span);
/* span level callbacks - NULL or return 0 prints the span verbatim */
int (*autolink)(struct buf *ob, const struct buf *link, enum mkd_autolink type, void *opaque);
int (*codespan)(struct buf *ob, const struct buf *text, void *opaque);
int (*double_emphasis)(struct buf *ob, const struct buf *text, void *opaque);
int (*emphasis)(struct buf *ob, const struct buf *text, void *opaque);
int (*image)(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *alt, void *opaque);
int (*linebreak)(struct buf *ob, void *opaque);
int (*link)(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *content, void *opaque);
int (*raw_html_tag)(struct buf *ob, const struct buf *tag, void *opaque);
int (*triple_emphasis)(struct buf *ob, const struct buf *text, void *opaque);
int (*strikethrough)(struct buf *ob, const struct buf *text, void *opaque);
int (*superscript)(struct buf *ob, const struct buf *text, void *opaque);
/* low level callbacks - NULL copies input directly into the output */
void (*entity)(struct buf *ob, const struct buf *entity, void *opaque);
void (*normal_text)(struct buf *ob, const struct buf *text, void *opaque);
/* header and footer */
void (*doc_header)(struct buf *ob, void *opaque);
void (*doc_footer)(struct buf *ob, void *opaque);
};
struct sd_markdown;
/*********
* FLAGS *
*********/
/* list/listitem flags */
#define MKD_LIST_ORDERED 1
#define MKD_LI_BLOCK 2 /* <li> containing block data */
/**********************
* EXPORTED FUNCTIONS *
**********************/
extern struct sd_markdown *
sd_markdown_new(
unsigned int extensions,
size_t max_nesting,
size_t max_table_cols,
const struct sd_callbacks *callbacks,
void *opaque);
extern void
sd_markdown_render(struct buf *ob, const uint8_t *document, size_t doc_size, struct sd_markdown *md);
extern void
sd_markdown_free(struct sd_markdown *md);
extern void
sd_version(int *major, int *minor, int *revision);
#ifdef __cplusplus
}
#endif
#endif
/* vim: set filetype=c: */

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from distutils.spawn import find_executable
from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext
import re
import os
import subprocess
import fnmatch
def c_files_in(directory):
paths = []
names = os.listdir(directory)
for f in fnmatch.filter(names, '*.c'):
paths.append(os.path.join(directory, f))
return paths
def process_gperf_file(gperf_file, output_file):
if not find_executable("gperf"):
raise Exception("Couldn't find `gperf`, is it installed?")
assert os.path.exists(gperf_file)
command = "gperf.exe "+ gperf_file+ " --output-file=" + output_file
print(command)
#subprocess.check_call(command)
version = None
version_re = re.compile(r'^#define\s+SNUDOWN_VERSION\s+"([^"]+)"$')
with open('snudown.c', 'r') as f:
for line in f:
m = version_re.match(line)
if m:
version = m.group(1)
assert version
class GPerfingBuildExt(build_ext):
def run(self):
process_gperf_file("src\\html_entities.gperf", "src\\html_entities.h")
build_ext.run(self)
setup(
name='snudown',
version=version,
author='Vicent Marti',
author_email='vicent@github.com',
license='MIT',
test_suite="test_snudown.test_snudown",
cmdclass={'build_ext': GPerfingBuildExt,},
ext_modules=[
Extension(
name='snudown',
sources=['snudown.c'] + c_files_in('src/') + c_files_in('html/'),
include_dirs=['src', 'html']
)
],
)

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#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include "markdown.h"
#include "html.h"
#include "autolink.h"
#define SNUDOWN_VERSION "1.4.0"
enum snudown_renderer_mode {
RENDERER_USERTEXT = 0,
RENDERER_WIKI,
RENDERER_COUNT
};
struct snudown_renderopt {
struct html_renderopt html;
int nofollow;
const char *target;
};
struct snudown_renderer {
struct sd_markdown* main_renderer;
struct sd_markdown* toc_renderer;
struct module_state* state;
struct module_state* toc_state;
};
struct module_state {
struct sd_callbacks callbacks;
struct snudown_renderopt options;
};
static struct snudown_renderer sundown[RENDERER_COUNT];
static char* html_element_whitelist[] = {"tr", "th", "td", "table", "tbody", "thead", "tfoot", "caption", NULL};
static char* html_attr_whitelist[] = {"colspan", "rowspan", "cellspacing", "cellpadding", "scope", NULL};
static struct module_state usertext_toc_state;
static struct module_state wiki_toc_state;
static struct module_state usertext_state;
static struct module_state wiki_state;
/* The module doc strings */
PyDoc_STRVAR(snudown_module__doc__, "When does the narwhal bacon? At Sundown.");
PyDoc_STRVAR(snudown_md__doc__, "Render a Markdown document");
static const unsigned int snudown_default_md_flags =
MKDEXT_NO_INTRA_EMPHASIS |
MKDEXT_SUPERSCRIPT |
MKDEXT_AUTOLINK |
MKDEXT_STRIKETHROUGH |
MKDEXT_TABLES;
static const unsigned int snudown_default_render_flags =
HTML_SKIP_HTML |
HTML_SKIP_IMAGES |
HTML_SAFELINK |
HTML_ESCAPE |
HTML_USE_XHTML;
static const unsigned int snudown_wiki_render_flags =
HTML_SKIP_HTML |
HTML_SAFELINK |
HTML_ALLOW_ELEMENT_WHITELIST |
HTML_ESCAPE |
HTML_USE_XHTML;
static void
snudown_link_attr(struct buf *ob, const struct buf *link, void *opaque)
{
struct snudown_renderopt *options = opaque;
if (options->nofollow)
BUFPUTSL(ob, " rel=\"nofollow\"");
if (options->target != NULL) {
BUFPUTSL(ob, " target=\"");
bufputs(ob, options->target);
bufputc(ob, '\"');
}
}
static struct sd_markdown* make_custom_renderer(struct module_state* state,
const unsigned int renderflags,
const unsigned int markdownflags,
int toc_renderer) {
if(toc_renderer) {
sdhtml_toc_renderer(&state->callbacks,
(struct html_renderopt *)&state->options);
} else {
sdhtml_renderer(&state->callbacks,
(struct html_renderopt *)&state->options,
renderflags);
}
state->options.html.link_attributes = &snudown_link_attr;
state->options.html.html_element_whitelist = html_element_whitelist;
state->options.html.html_attr_whitelist = html_attr_whitelist;
return sd_markdown_new(
markdownflags,
16,
64,
&state->callbacks,
&state->options
);
}
void init_default_renderer(PyObject *module) {
PyModule_AddIntConstant(module, "RENDERER_USERTEXT", RENDERER_USERTEXT);
sundown[RENDERER_USERTEXT].main_renderer = make_custom_renderer(&usertext_state, snudown_default_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_USERTEXT].toc_renderer = make_custom_renderer(&usertext_toc_state, snudown_default_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_USERTEXT].state = &usertext_state;
sundown[RENDERER_USERTEXT].toc_state = &usertext_toc_state;
}
void init_wiki_renderer(PyObject *module) {
PyModule_AddIntConstant(module, "RENDERER_WIKI", RENDERER_WIKI);
sundown[RENDERER_WIKI].main_renderer = make_custom_renderer(&wiki_state, snudown_wiki_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_WIKI].toc_renderer = make_custom_renderer(&wiki_toc_state, snudown_wiki_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_WIKI].state = &wiki_state;
sundown[RENDERER_WIKI].toc_state = &wiki_toc_state;
}
static PyObject *
snudown_md(PyObject *self, PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = {"text", "nofollow", "target", "toc_id_prefix", "renderer", "enable_toc", NULL};
struct buf ib, *ob;
PyObject *py_result;
const char* result_text;
int renderer = RENDERER_USERTEXT;
int enable_toc = 0;
struct snudown_renderer _snudown;
int nofollow = 0;
char* target = NULL;
char* toc_id_prefix = NULL;
unsigned int flags;
memset(&ib, 0x0, sizeof(struct buf));
/* Parse arguments */
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#|izzii", kwlist,
&ib.data, &ib.size, &nofollow,
&target, &toc_id_prefix, &renderer, &enable_toc)) {
return NULL;
}
if (renderer < 0 || renderer >= RENDERER_COUNT) {
PyErr_SetString(PyExc_ValueError, "Invalid renderer");
return NULL;
}
_snudown = sundown[renderer];
struct snudown_renderopt *options = &(_snudown.state->options);
options->nofollow = nofollow;
options->target = target;
/* Output buffer */
ob = bufnew(128);
flags = options->html.flags;
if (enable_toc) {
_snudown.toc_state->options.html.toc_id_prefix = toc_id_prefix;
sd_markdown_render(ob, ib.data, ib.size, _snudown.toc_renderer);
_snudown.toc_state->options.html.toc_id_prefix = NULL;
options->html.flags |= HTML_TOC;
}
options->html.toc_id_prefix = toc_id_prefix;
/* do the magic */
sd_markdown_render(ob, ib.data, ib.size, _snudown.main_renderer);
options->html.toc_id_prefix = NULL;
options->html.flags = flags;
/* make a Python string */
result_text = "";
if (ob->data)
result_text = (const char*)ob->data;
py_result = Py_BuildValue("s#", result_text, (int)ob->size);
/* Cleanup */
bufrelease(ob);
return py_result;
}
static PyMethodDef snudown_methods[] = {
{"markdown", (PyCFunction) snudown_md, METH_VARARGS | METH_KEYWORDS, snudown_md__doc__},
{NULL, NULL, 0, NULL} /* Sentinel */
};
PyMODINIT_FUNC initsnudown(void)
{
PyObject *module;
module = Py_InitModule3("snudown", snudown_methods, snudown_module__doc__);
if (module == NULL)
return;
init_default_renderer(module);
init_wiki_renderer(module);
/* Version */
PyModule_AddStringConstant(module, "__version__", SNUDOWN_VERSION);
}

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#include "markdown.h"
#include "html.h"
#include "buffer.h"
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <gumbo.h>
#define READ_UNIT 1024
#define OUTPUT_UNIT 64
#include "autolink.h"
#define SNUDOWN_VERSION "1.3.2"
enum snudown_renderer_mode {
RENDERER_USERTEXT = 0,
RENDERER_WIKI,
RENDERER_COUNT
};
struct snudown_renderopt {
struct html_renderopt html;
int nofollow;
const char *target;
};
struct snudown_renderer {
struct sd_markdown* main_renderer;
struct sd_markdown* toc_renderer;
struct module_state* state;
struct module_state* toc_state;
};
struct module_state {
struct sd_callbacks callbacks;
struct snudown_renderopt options;
};
static struct snudown_renderer sundown[RENDERER_COUNT];
static char* html_element_whitelist[] = {"tr", "th", "td", "table", "tbody", "thead", "tfoot", "caption", NULL};
static char* html_attr_whitelist[] = {"colspan", "rowspan", "cellspacing", "cellpadding", "scope", NULL};
static struct module_state usertext_toc_state;
static struct module_state wiki_toc_state;
static struct module_state usertext_state;
static struct module_state wiki_state;
static const unsigned int snudown_default_md_flags =
MKDEXT_NO_INTRA_EMPHASIS |
MKDEXT_SUPERSCRIPT |
MKDEXT_AUTOLINK |
MKDEXT_STRIKETHROUGH |
MKDEXT_TABLES;
static const unsigned int snudown_default_render_flags =
HTML_SKIP_HTML |
HTML_SKIP_IMAGES |
HTML_SAFELINK |
HTML_ESCAPE |
HTML_USE_XHTML;
static const unsigned int snudown_wiki_render_flags =
HTML_SKIP_HTML |
HTML_SAFELINK |
HTML_ALLOW_ELEMENT_WHITELIST |
HTML_ESCAPE |
HTML_USE_XHTML;
static void
snudown_link_attr(struct buf *ob, const struct buf *link, void *opaque)
{
struct snudown_renderopt *options = opaque;
if (options->nofollow)
BUFPUTSL(ob, " rel=\"nofollow\"");
if (options->target != NULL) {
BUFPUTSL(ob, " target=\"");
bufputs(ob, options->target);
bufputc(ob, '\"');
}
}
static struct sd_markdown* make_custom_renderer(struct module_state* state,
const unsigned int renderflags,
const unsigned int markdownflags,
int toc_renderer) {
if(toc_renderer) {
sdhtml_toc_renderer(&state->callbacks,
(struct html_renderopt *)&state->options);
} else {
sdhtml_renderer(&state->callbacks,
(struct html_renderopt *)&state->options,
renderflags);
}
state->options.html.link_attributes = &snudown_link_attr;
state->options.html.html_element_whitelist = html_element_whitelist;
state->options.html.html_attr_whitelist = html_attr_whitelist;
return sd_markdown_new(
markdownflags,
16,
64,
&state->callbacks,
&state->options
);
}
void init_default_renderer() {
sundown[RENDERER_USERTEXT].main_renderer = make_custom_renderer(&usertext_state, snudown_default_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_USERTEXT].toc_renderer = make_custom_renderer(&usertext_toc_state, snudown_default_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_USERTEXT].state = &usertext_state;
sundown[RENDERER_USERTEXT].toc_state = &usertext_toc_state;
}
void init_wiki_renderer() {
sundown[RENDERER_WIKI].main_renderer = make_custom_renderer(&wiki_state, snudown_wiki_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_WIKI].toc_renderer = make_custom_renderer(&wiki_toc_state, snudown_wiki_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_WIKI].state = &wiki_state;
sundown[RENDERER_WIKI].toc_state = &wiki_toc_state;
}
void
snudown_md(struct buf *ob, const uint8_t *document, size_t doc_size, int wiki_mode)
{
int renderer = RENDERER_USERTEXT;
int enable_toc = 0;
struct snudown_renderer _snudown;
int nofollow = 0;
char* target = NULL;
char* toc_id_prefix = NULL;
unsigned int flags;
if (wiki_mode)
renderer = RENDERER_WIKI;
_snudown = sundown[renderer];
struct snudown_renderopt *options = &(_snudown.state->options);
options->nofollow = nofollow;
options->target = target;
flags = options->html.flags;
if (enable_toc) {
_snudown.toc_state->options.html.toc_id_prefix = toc_id_prefix;
sd_markdown_render(ob, document, doc_size, _snudown.toc_renderer);
_snudown.toc_state->options.html.toc_id_prefix = NULL;
options->html.flags |= HTML_TOC;
}
options->html.toc_id_prefix = toc_id_prefix;
/* do the magic */
sd_markdown_render(ob, document, doc_size, _snudown.main_renderer);
options->html.toc_id_prefix = NULL;
options->html.flags = flags;
}
int
main(int argc, char **argv)
{
init_default_renderer();
init_wiki_renderer();
struct buf *ib, *ob;
int size_read = 0, wiki_mode = 0, i = 0, have_errors = 0;
/* reading everything */
ib = bufnew(READ_UNIT);
bufgrow(ib, READ_UNIT);
while ((size_read = fread(ib->data + ib->size, 1, ib->asize - ib->size, stdin)) > 0) {
ib->size += size_read;
bufgrow(ib, ib->size + READ_UNIT);
}
/* Render to a buffer, then print that out */
ob = bufnew(OUTPUT_UNIT);
bufputs(ob, "<!DOCTYPE html><html><body>\n");
snudown_md(ob, ib->data, ib->size, wiki_mode);
bufputs(ob, "</body></html>\n");
// Wiki mode explicitly allows unbalanced tags, need some way to exclude those
if (!wiki_mode) {
GumboOutput* output = gumbo_parse_with_options(&kGumboDefaultOptions, bufcstr(ob), ob->size);
for (i=0; i < output->errors.length; ++i) {
// stupid "public" API I hacked in.
void* thing = output->errors.data[i];
GumboErrorType type = gumbo_get_error_type(thing);
switch(type) {
case GUMBO_ERR_UTF8_INVALID:
case GUMBO_ERR_UTF8_NULL:
// Making sure the user gave us valid
// utf-8 or transforming it to valid
// utf-8 is outside the scope of snudown
continue;
default:
have_errors = 1;
printf("%s\n", GUMBO_ERROR_NAMES[type]);
printf("%s\n",gumbo_get_error_text(thing));
printf("===============\n");
break;
}
}
if (have_errors) {
// gotta trigger a crash for AFL to catch it
assert(0);
}
gumbo_destroy_output(&kGumboDefaultOptions, output);
}
bufrelease(ob);
bufrelease(ib);
return 0;
}

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#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include "markdown.h"
#include "html.h"
#include "autolink.h"
#define SNUDOWN_VERSION "1.4.0"
enum snudown_renderer_mode {
RENDERER_USERTEXT = 0,
RENDERER_WIKI,
RENDERER_COUNT
};
struct snudown_renderopt {
struct html_renderopt html;
int nofollow;
const char *target;
};
struct snudown_renderer {
struct sd_markdown* main_renderer;
struct sd_markdown* toc_renderer;
struct module_state* state;
struct module_state* toc_state;
};
struct module_state {
struct sd_callbacks callbacks;
struct snudown_renderopt options;
};
static struct snudown_renderer sundown[RENDERER_COUNT];
static char* html_element_whitelist[] = {"tr", "th", "td", "table", "tbody", "thead", "tfoot", "caption", NULL};
static char* html_attr_whitelist[] = {"colspan", "rowspan", "cellspacing", "cellpadding", "scope", NULL};
static struct module_state usertext_toc_state;
static struct module_state wiki_toc_state;
static struct module_state usertext_state;
static struct module_state wiki_state;
/* The module doc strings */
PyDoc_STRVAR(snudown_module__doc__, "When does the narwhal bacon? At Sundown.");
PyDoc_STRVAR(snudown_md__doc__, "Render a Markdown document");
static const unsigned int snudown_default_md_flags =
MKDEXT_NO_INTRA_EMPHASIS |
MKDEXT_SUPERSCRIPT |
MKDEXT_AUTOLINK |
MKDEXT_STRIKETHROUGH |
MKDEXT_TABLES;
static const unsigned int snudown_default_render_flags =
HTML_SKIP_HTML |
HTML_SKIP_IMAGES |
HTML_SAFELINK |
HTML_ESCAPE |
HTML_USE_XHTML;
static const unsigned int snudown_wiki_render_flags =
HTML_SKIP_HTML |
HTML_SAFELINK |
HTML_ALLOW_ELEMENT_WHITELIST |
HTML_ESCAPE |
HTML_USE_XHTML;
static void
snudown_link_attr(struct buf *ob, const struct buf *link, void *opaque)
{
struct snudown_renderopt *options = opaque;
if (options->nofollow)
BUFPUTSL(ob, " rel=\"nofollow\"");
if (options->target != NULL) {
BUFPUTSL(ob, " target=\"");
bufputs(ob, options->target);
bufputc(ob, '\"');
}
}
static struct sd_markdown* make_custom_renderer(struct module_state* state,
const unsigned int renderflags,
const unsigned int markdownflags,
int toc_renderer) {
if(toc_renderer) {
sdhtml_toc_renderer(&state->callbacks,
(struct html_renderopt *)&state->options);
} else {
sdhtml_renderer(&state->callbacks,
(struct html_renderopt *)&state->options,
renderflags);
}
state->options.html.link_attributes = &snudown_link_attr;
state->options.html.html_element_whitelist = html_element_whitelist;
state->options.html.html_attr_whitelist = html_attr_whitelist;
return sd_markdown_new(
markdownflags,
16,
64,
&state->callbacks,
&state->options
);
}
void init_default_renderer(PyObject *module) {
PyModule_AddIntConstant(module, "RENDERER_USERTEXT", RENDERER_USERTEXT);
sundown[RENDERER_USERTEXT].main_renderer = make_custom_renderer(&usertext_state, snudown_default_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_USERTEXT].toc_renderer = make_custom_renderer(&usertext_toc_state, snudown_default_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_USERTEXT].state = &usertext_state;
sundown[RENDERER_USERTEXT].toc_state = &usertext_toc_state;
}
void init_wiki_renderer(PyObject *module) {
PyModule_AddIntConstant(module, "RENDERER_WIKI", RENDERER_WIKI);
sundown[RENDERER_WIKI].main_renderer = make_custom_renderer(&wiki_state, snudown_wiki_render_flags, snudown_default_md_flags, 0);
sundown[RENDERER_WIKI].toc_renderer = make_custom_renderer(&wiki_toc_state, snudown_wiki_render_flags, snudown_default_md_flags, 1);
sundown[RENDERER_WIKI].state = &wiki_state;
sundown[RENDERER_WIKI].toc_state = &wiki_toc_state;
}
static PyObject *
snudown_md(PyObject *self, PyObject *args, PyObject *kwargs)
{
struct snudown_renderopt *options;
static char *kwlist[] = {"text", "nofollow", "target", "toc_id_prefix", "renderer", "enable_toc", NULL};
struct buf ib, *ob;
PyObject *py_result;
const char* result_text;
int renderer = RENDERER_USERTEXT;
int enable_toc = 0;
struct snudown_renderer _snudown;
int nofollow = 0;
char* target = NULL;
char* toc_id_prefix = NULL;
unsigned int flags;
memset(&ib, 0x0, sizeof(struct buf));
/* Parse arguments */
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#|izzii", kwlist,
&ib.data, &ib.size, &nofollow,
&target, &toc_id_prefix, &renderer, &enable_toc)) {
return NULL;
}
if (renderer < 0 || renderer >= RENDERER_COUNT) {
PyErr_SetString(PyExc_ValueError, "Invalid renderer");
return NULL;
};
_snudown = sundown[renderer];
_snudown.state->options;
options->nofollow = nofollow;
options->target = target;
/* Output buffer */
ob = bufnew(128);
flags = options->html.flags;
if (enable_toc) {
_snudown.toc_state->options.html.toc_id_prefix = toc_id_prefix;
sd_markdown_render(ob, ib.data, ib.size, _snudown.toc_renderer);
_snudown.toc_state->options.html.toc_id_prefix = NULL;
options->html.flags |= HTML_TOC;
}
options->html.toc_id_prefix = toc_id_prefix;
/* do the magic */
sd_markdown_render(ob, ib.data, ib.size, _snudown.main_renderer);
options->html.toc_id_prefix = NULL;
options->html.flags = flags;
/* make a Python string */
result_text = "";
if (ob->data)
result_text = (const char*)ob->data;
py_result = Py_BuildValue("s#", result_text, (int)ob->size);
/* Cleanup */
bufrelease(ob);
return py_result;
}
static PyMethodDef snudown_methods[] = {
{"markdown", (PyCFunction) snudown_md, METH_VARARGS | METH_KEYWORDS, snudown_md__doc__},
{NULL, NULL, 0, NULL} /* Sentinel */
};
PyMODINIT_FUNC PyInit_snudown(void)
{
PyObject *module;
struct PyModuleDef wtf = {
PyModuleDef_HEAD_INIT,
"snudown", /* m_name */
"This is snudown", /* m_doc */
-1, /* m_size */
snudown_methods, /* m_methods */
NULL, /* m_reload */
NULL, /* m_traverse */
NULL, /* m_clear */
NULL, /* m_free */
};
//module = Py_InitModule3("snudown", snudown_methods, snudown_module__doc__);
module = PyModule_Create(&wtf);
if (module == NULL)
return Py_BuildValue("");
init_default_renderer(module);
init_wiki_renderer(module);
/* Version */
PyModule_AddStringConstant(module, "__version__", SNUDOWN_VERSION);
};
void initsnudown(void)
{
(void) PyInit_snudown("snudown", snudown_methods);
};

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "buffer.h"
#include "autolink.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#if defined(_WIN32)
#define strncasecmp _strnicmp
#endif
int
sd_autolink_issafe(const uint8_t *link, size_t link_len)
{
static const size_t valid_uris_count = 14;
static const char *valid_uris[] = {
"http://", "https://", "ftp://", "mailto://",
"/", "git://", "steam://", "irc://", "news://", "mumble://",
"ssh://", "ircs://", "ts3server://", "#"
};
size_t i;
for (i = 0; i < valid_uris_count; ++i) {
size_t len = strlen(valid_uris[i]);
if (link_len > len &&
strncasecmp((char *)link, valid_uris[i], len) == 0 &&
(isalnum(link[len]) || link[len] == '#' || link[len] == '/' || link[len] == '?'))
return 1;
}
return 0;
}
static size_t
autolink_delim(uint8_t *data, size_t link_end, size_t max_rewind, size_t size)
{
uint8_t cclose, copen = 0;
size_t i;
for (i = 0; i < link_end; ++i)
if (data[i] == '<') {
link_end = i;
break;
}
while (link_end > 0) {
uint8_t c = data[link_end - 1];
if (c == 0)
break;
if (strchr("?!.,", c) != NULL)
link_end--;
else if (c == ';') {
size_t new_end = link_end - 2;
while (new_end > 0 && isalpha(data[new_end]))
new_end--;
if (new_end < link_end - 2 && data[new_end] == '&')
link_end = new_end;
else
link_end--;
}
else break;
}
if (link_end == 0)
return 0;
cclose = data[link_end - 1];
switch (cclose) {
case '"': copen = '"'; break;
case '\'': copen = '\''; break;
case ')': copen = '('; break;
case ']': copen = '['; break;
case '}': copen = '{'; break;
}
if (copen != 0) {
size_t closing = 0;
size_t opening = 0;
size_t i = 0;
/* Try to close the final punctuation sign in this same line;
* if we managed to close it outside of the URL, that means that it's
* not part of the URL. If it closes inside the URL, that means it
* is part of the URL.
*
* Examples:
*
* foo http://www.pokemon.com/Pikachu_(Electric) bar
* => http://www.pokemon.com/Pikachu_(Electric)
*
* foo (http://www.pokemon.com/Pikachu_(Electric)) bar
* => http://www.pokemon.com/Pikachu_(Electric)
*
* foo http://www.pokemon.com/Pikachu_(Electric)) bar
* => http://www.pokemon.com/Pikachu_(Electric))
*
* (foo http://www.pokemon.com/Pikachu_(Electric)) bar
* => foo http://www.pokemon.com/Pikachu_(Electric)
*/
while (i < link_end) {
if (data[i] == copen)
opening++;
else if (data[i] == cclose)
closing++;
i++;
}
if (closing != opening)
link_end--;
}
return link_end;
}
/*
* Checks that `prefix_char` occurs on a word boundary just before `data`,
* where `data` points to the character to search to the left of, and a word boundary
* is (currently) a whitespace character, punctuation, or the start of the string.
* Returns the length of the prefix.
*/
static int
check_reddit_autolink_prefix(
const uint8_t* data,
size_t max_rewind,
size_t max_lookbehind,
size_t size,
char prefix_char
)
{
/* Make sure this `/` is part of `/?r/` */
if (size < 2 || max_rewind < 1 || data[-1] != prefix_char)
return 0;
/* Not at the start of the buffer, no inlines to the immediate left of the `prefix_char` */
if (max_rewind > 1) {
const char boundary = data[-2];
if (boundary == '/')
return 2;
/**
* Here's where our lack of unicode-awareness bites us. We don't correctly
* match punctuation / whitespace characters for the boundary, because we
* reject valid cases like "。r/example" (note the fullwidth period.)
*
* A better implementation might try to rewind over bytes with the 8th bit set, try
* to decode them to a valid codepoint, then do a unicode-aware check on the codepoint.
*/
else if (ispunct(boundary) || isspace(boundary))
return 1;
else
return 0;
} else if (max_lookbehind > 2) {
/* There's an inline element just left of the `prefix_char`, is it an escaped forward
* slash? bail out so we correctly handle stuff like "\/r/foo". This will also correctly
* allow "\\/r/foo".
*/
if (data[-2] == '/' && data[-3] == '\\')
return 0;
}
/* Must be a new-style shortlink with nothing relevant to the left of it. */
return 1;
}
static size_t
check_domain(uint8_t *data, size_t size, int allow_short)
{
size_t i, np = 0;
if (!isalnum(data[0]))
return 0;
for (i = 1; i < size - 1; ++i) {
if (data[i] == '.') np++;
else if (!isalnum(data[i]) && data[i] != '-') break;
}
if (allow_short) {
/* We don't need a valid domain in the strict sense (with
* least one dot; so just make sure it's composed of valid
* domain characters and return the length of the the valid
* sequence. */
return i;
} else {
/* a valid domain needs to have at least a dot.
* that's as far as we get */
return np ? i : 0;
}
}
size_t
sd_autolink__www(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t size,
unsigned int flags)
{
size_t link_end;
if (max_rewind > 0 && !ispunct(data[-1]) && !isspace(data[-1]))
return 0;
if (size < 4 || memcmp(data, "www.", strlen("www.")) != 0)
return 0;
link_end = check_domain(data, size, 0);
if (link_end == 0)
return 0;
while (link_end < size && !isspace(data[link_end]))
link_end++;
link_end = autolink_delim(data, link_end, max_rewind, size);
if (link_end == 0)
return 0;
bufput(link, data, link_end);
*rewind_p = 0;
return (int)link_end;
}
size_t
sd_autolink__email(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t size,
unsigned int flags)
{
size_t link_end, rewind;
int nb = 0, np = 0;
for (rewind = 0; rewind < max_rewind; ++rewind) {
uint8_t c = data[-rewind - 1];
if (c == 0)
break;
if (isalnum(c))
continue;
if (strchr(".+-_", c) != NULL)
continue;
break;
}
if (rewind == 0)
return 0;
for (link_end = 0; link_end < size; ++link_end) {
uint8_t c = data[link_end];
if (isalnum(c))
continue;
if (c == '@')
nb++;
else if (c == '.' && link_end < size - 1)
np++;
else if (c != '-' && c != '_')
break;
}
if (link_end < 2 || nb != 1 || np == 0)
return 0;
link_end = autolink_delim(data, link_end, max_rewind, size);
if (link_end == 0)
return 0;
bufput(link, data - rewind, link_end + rewind);
*rewind_p = rewind;
return link_end;
}
size_t
sd_autolink__url(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t size,
unsigned int flags)
{
size_t link_end, rewind = 0, domain_len;
if (size < 4 || data[1] != '/' || data[2] != '/')
return 0;
while (rewind < max_rewind && isalpha(data[-rewind - 1]))
rewind++;
if (!sd_autolink_issafe(data - rewind, size + rewind))
return 0;
link_end = strlen("://");
domain_len = check_domain(
data + link_end,
size - link_end,
flags & SD_AUTOLINK_SHORT_DOMAINS);
if (domain_len == 0)
return 0;
link_end += domain_len;
while (link_end < size && !isspace(data[link_end]))
link_end++;
link_end = autolink_delim(data, link_end, max_rewind, size);
if (link_end == 0)
return 0;
bufput(link, data - rewind, link_end + rewind);
*rewind_p = rewind;
return link_end;
}
size_t
sd_autolink__subreddit(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t max_lookbehind,
size_t size,
int *no_slash
)
{
/**
* This is meant to handle both r/foo and /r/foo style subreddit references.
* In a valid /?r/ link, `*data` will always point to the '/' after the first 'r'.
* In pseudo-regex, this matches something like:
*
* `(/|(?<=\b))r/(all-)?%subreddit%([-+]%subreddit%)*(/[\w\-/]*)?`
* where %subreddit% == `((t:)?\w{2,24}|reddit\.com)`
*/
size_t link_end;
size_t rewind;
int is_allminus = 0;
rewind = check_reddit_autolink_prefix(data, max_rewind, max_lookbehind, size, 'r');
if (!rewind)
return 0;
/* offset to the "meat" of the link */
link_end = strlen("/");
if (size >= link_end + 4 && strncasecmp((char*)data + link_end, "all-", 4) == 0)
is_allminus = 1;
do {
size_t start = link_end;
int max_length = 24;
/* special case: /r/reddit.com (only subreddit containing '.'). */
if ( size >= link_end+10 && strncasecmp((char*)data+link_end, "reddit.com", 10) == 0 ) {
link_end += 10;
/* Make sure there are no trailing characters (don't do
* any autolinking for /r/reddit.commission) */
max_length = 10;
}
/* If not a special case, verify it begins with (t:)?[A-Za-z0-9] */
else {
/* support autolinking to timereddits, /r/t:when (1 April 2012) */
if ( size > link_end+2 && strncasecmp((char*)data+link_end, "t:", 2) == 0 )
link_end += 2; /* Jump over the 't:' */
/* the first character of a subreddit name must be a letter or digit */
if (!isalnum(data[link_end]))
return 0;
link_end += 1;
}
/* consume valid characters ([A-Za-z0-9_]) until we run out */
while (link_end < size && (isalnum(data[link_end]) ||
data[link_end] == '_'))
link_end++;
/* valid subreddit names are between 3 and 21 characters, with
* some subreddits having 2-character names. Don't bother with
* autolinking for anything outside this length range.
* (chksrname function in reddit/.../validator.py) */
if ( link_end-start < 2 || link_end-start > max_length )
return 0;
/* If we are linking to a multireddit, continue */
} while ( link_end < size && (data[link_end] == '+' || (is_allminus && data[link_end] == '-')) && link_end++ );
if (link_end < size && data[link_end] == '/') {
while (link_end < size && (isalnum(data[link_end]) ||
data[link_end] == '_' ||
data[link_end] == '/' ||
data[link_end] == '-'))
link_end++;
}
/* make the link */
bufput(link, data - rewind, link_end + rewind);
*no_slash = (rewind == 1);
*rewind_p = rewind;
return link_end;
}
size_t
sd_autolink__username(
size_t *rewind_p,
struct buf *link,
uint8_t *data,
size_t max_rewind,
size_t max_lookbehind,
size_t size,
int *no_slash
)
{
size_t link_end;
size_t rewind;
if (size < 3)
return 0;
rewind = check_reddit_autolink_prefix(data, max_rewind, max_lookbehind, size, 'u');
if (!rewind)
return 0;
link_end = strlen("/");
/* the first letter of a username must... well, be valid, we don't care otherwise */
if (!isalnum(data[link_end]) && data[link_end] != '_' && data[link_end] != '-')
return 0;
link_end += 1;
/* consume valid characters ([A-Za-z0-9_-/]) until we run out */
while (link_end < size && (isalnum(data[link_end]) ||
data[link_end] == '_' ||
data[link_end] == '/' ||
data[link_end] == '-'))
link_end++;
/* make the link */
bufput(link, data - rewind, link_end + rewind);
*no_slash = (rewind == 1);
*rewind_p = rewind;
return link_end;
}

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/*
* Copyright (c) 2011, Vicent Marti
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UPSKIRT_AUTOLINK_H
#define UPSKIRT_AUTOLINK_H
#include "buffer.h"
#ifdef __cplusplus
extern "C" {
#endif
enum {
SD_AUTOLINK_SHORT_DOMAINS = (1 << 0),
};
int
sd_autolink_issafe(const uint8_t *link, size_t link_len);
size_t
sd_autolink__www(size_t *rewind_p, struct buf *link,
uint8_t *data, size_t max_rewind, size_t size, unsigned int flags);
size_t
sd_autolink__email(size_t *rewind_p, struct buf *link,
uint8_t *data, size_t max_rewind, size_t size, unsigned int flags);
size_t
sd_autolink__url(size_t *rewind_p, struct buf *link,
uint8_t *data, size_t max_rewind, size_t size, unsigned int flags);
extern size_t
sd_autolink__subreddit(size_t *rewind_p, struct buf *link, uint8_t *data,
size_t max_rewind, size_t max_lookbehind, size_t size, int *no_slash);
extern size_t
sd_autolink__username(size_t *rewind_p, struct buf *link, uint8_t *data,
size_t max_rewind, size_t max_lookbehind, size_t size, int *no_slash);
#ifdef __cplusplus
}
#endif
#endif
/* vim: set filetype=c: */

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/*
* Copyright (c) 2008, Natacha Porté
* Copyright (c) 2011, Vicent Martí
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define BUFFER_MAX_ALLOC_SIZE (1024 * 1024 * 16) //16mb
#include "buffer.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
/* MSVC compat */
#if defined(_MSC_VER)
# define _buf_vsnprintf _vsnprintf
#else
# define _buf_vsnprintf vsnprintf
#endif
int
bufprefix(const struct buf *buf, const char *prefix)
{
size_t i;
assert(buf && buf->unit);
for (i = 0; i < buf->size; ++i) {
if (prefix[i] == 0)
return 0;
if (buf->data[i] != prefix[i])
return buf->data[i] - prefix[i];
}
return 0;
}
/* bufgrow: increasing the allocated size to the given value */
int
bufgrow(struct buf *buf, size_t neosz)
{
size_t neoasz;
void *neodata;
assert(buf && buf->unit);
if (neosz > BUFFER_MAX_ALLOC_SIZE)
return BUF_ENOMEM;
if (buf->asize >= neosz)
return BUF_OK;
neoasz = buf->asize + buf->unit;
while (neoasz < neosz)
neoasz += buf->unit;
neodata = realloc(buf->data, neoasz);
if (!neodata)
return BUF_ENOMEM;
buf->data = neodata;
buf->asize = neoasz;
return BUF_OK;
}
/* bufnew: allocation of a new buffer */
struct buf *
bufnew(size_t unit)
{
struct buf *ret;
ret = malloc(sizeof (struct buf));
if (ret) {
ret->data = 0;
ret->size = ret->asize = 0;
ret->unit = unit;
}
return ret;
}
/* bufnullterm: NULL-termination of the string array */
const char *
bufcstr(struct buf *buf)
{
assert(buf && buf->unit);
if (buf->size < buf->asize && buf->data[buf->size] == 0)
return (char *)buf->data;
if (buf->size + 1 <= buf->asize || bufgrow(buf, buf->size + 1) == 0) {
buf->data[buf->size] = 0;
return (char *)buf->data;
}
return NULL;
}
/* bufprintf: formatted printing to a buffer */
void
bufprintf(struct buf *buf, const char *fmt, ...)
{
va_list ap;
int n;
assert(buf && buf->unit);
if (buf->size >= buf->asize && bufgrow(buf, buf->size + 1) < 0)
return;
va_start(ap, fmt);
n = _buf_vsnprintf((char *)buf->data + buf->size, buf->asize - buf->size, fmt, ap);
va_end(ap);
if (n < 0) {
#ifdef _MSC_VER
va_start(ap, fmt);
n = _vscprintf(fmt, ap);
va_end(ap);
#else
return;
#endif
}
if ((size_t)n >= buf->asize - buf->size) {
if (bufgrow(buf, buf->size + n + 1) < 0)
return;
va_start(ap, fmt);
n = _buf_vsnprintf((char *)buf->data + buf->size, buf->asize - buf->size, fmt, ap);
va_end(ap);
}
if (n < 0)
return;
buf->size += n;
}
/* bufput: appends raw data to a buffer */
void
bufput(struct buf *buf, const void *data, size_t len)
{
assert(buf && buf->unit);
if (buf->size + len > buf->asize && bufgrow(buf, buf->size + len) < 0)
return;
memcpy(buf->data + buf->size, data, len);
buf->size += len;
}
/* bufputs: appends a NUL-terminated string to a buffer */
void
bufputs(struct buf *buf, const char *str)
{
bufput(buf, str, strlen(str));
}
/* bufputc: appends a single uint8_t to a buffer */
void
bufputc(struct buf *buf, int c)
{
assert(buf && buf->unit);
if (buf->size + 1 > buf->asize && bufgrow(buf, buf->size + 1) < 0)
return;
buf->data[buf->size] = c;
buf->size += 1;
}
/* bufrelease: decrease the reference count and free the buffer if needed */
void
bufrelease(struct buf *buf)
{
if (!buf)
return;
free(buf->data);
free(buf);
}
/* bufreset: frees internal data of the buffer */
void
bufreset(struct buf *buf)
{
if (!buf)
return;
free(buf->data);
buf->data = NULL;
buf->size = buf->asize = 0;
}
/* bufslurp: removes a given number of bytes from the head of the array */
void
bufslurp(struct buf *buf, size_t len)
{
assert(buf && buf->unit);
if (len >= buf->size) {
buf->size = 0;
return;
}
buf->size -= len;
memmove(buf->data, buf->data + len, buf->size);
}
/* buftrucate: truncates the buffer at `size` */
int
buftruncate(struct buf *buf, size_t size)
{
if (buf->size < size || size < 0) {
/* bail out in debug mode so we can figure out why this happened */
assert(0);
return BUF_EINVALIDIDX;
}
buf->size = size;
return BUF_OK;
}

100
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/*
* Copyright (c) 2008, Natacha Porté
* Copyright (c) 2011, Vicent Martí
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef BUFFER_H__
#define BUFFER_H__
#include <stddef.h>
#include <stdarg.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_MSC_VER)
#define __attribute__(x)
#define inline
#endif
typedef enum {
BUF_OK = 0,
BUF_ENOMEM = -1,
BUF_EINVALIDIDX = -2,
} buferror_t;
/* struct buf: character array buffer */
struct buf {
uint8_t *data; /* actual character data */
size_t size; /* size of the string */
size_t asize; /* allocated size (0 = volatile buffer) */
size_t unit; /* reallocation unit size (0 = read-only buffer) */
};
/* CONST_BUF: global buffer from a string litteral */
#define BUF_STATIC(string) \
{ (uint8_t *)string, sizeof string -1, sizeof string, 0, 0 }
/* VOLATILE_BUF: macro for creating a volatile buffer on the stack */
#define BUF_VOLATILE(strname) \
{ (uint8_t *)strname, strlen(strname), 0, 0, 0 }
/* BUFPUTSL: optimized bufputs of a string litteral */
#define BUFPUTSL(output, literal) \
bufput(output, literal, sizeof literal - 1)
/* bufgrow: increasing the allocated size to the given value */
int bufgrow(struct buf *, size_t);
/* bufnew: allocation of a new buffer */
struct buf *bufnew(size_t) __attribute__ ((malloc));
/* bufnullterm: NUL-termination of the string array (making a C-string) */
const char *bufcstr(struct buf *);
/* bufprefix: compare the beginning of a buffer with a string */
int bufprefix(const struct buf *buf, const char *prefix);
/* bufput: appends raw data to a buffer */
void bufput(struct buf *, const void *, size_t);
/* bufputs: appends a NUL-terminated string to a buffer */
void bufputs(struct buf *, const char *);
/* bufputc: appends a single char to a buffer */
void bufputc(struct buf *, int);
/* bufrelease: decrease the reference count and free the buffer if needed */
void bufrelease(struct buf *);
/* bufreset: frees internal data of the buffer */
void bufreset(struct buf *);
/* bufslurp: removes a given number of bytes from the head of the array */
void bufslurp(struct buf *, size_t);
/* bufprintf: formatted printing to a buffer */
void bufprintf(struct buf *, const char *, ...) __attribute__ ((format (printf, 2, 3)));
/* buftruncate: truncates the buffer at `size` */
int buftruncate(struct buf *buf, size_t size);
#ifdef __cplusplus
}
#endif
#endif

206
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/* C code produced by gperf version 3.0.3 */
/* Command-line: gperf -N find_block_tag -H hash_block_tag -C -c -E --ignore-case html_block_names.txt */
/* Computed positions: -k'1-2' */
#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
&& ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
&& (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
&& ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
&& ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
&& ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
&& ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
&& ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
&& ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
&& ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
&& ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
&& ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
&& ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
&& ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
&& ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
&& ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
&& ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
&& ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
&& ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
&& ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
&& ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
&& ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
&& ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
/* The character set is not based on ISO-646. */
error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
#endif
/* maximum key range = 37, duplicates = 0 */
#ifndef GPERF_DOWNCASE
#define GPERF_DOWNCASE 1
static unsigned char gperf_downcase[256] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106,
107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121,
122, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104,
105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119,
120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134,
135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164,
165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179,
180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194,
195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209,
210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224,
225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254,
255
};
#endif
#ifndef GPERF_CASE_STRNCMP
#define GPERF_CASE_STRNCMP 1
static int
gperf_case_strncmp (s1, s2, n)
register const char *s1;
register const char *s2;
register unsigned int n;
{
for (; n > 0;)
{
unsigned char c1 = gperf_downcase[(unsigned char)*s1++];
unsigned char c2 = gperf_downcase[(unsigned char)*s2++];
if (c1 != 0 && c1 == c2)
{
n--;
continue;
}
return (int)c1 - (int)c2;
}
return 0;
}
#endif
#ifdef __GNUC__
__inline
#else
#ifdef __cplusplus
inline
#endif
#endif
static unsigned int
hash_block_tag (str, len)
register const char *str;
register unsigned int len;
{
static const unsigned char asso_values[] =
{
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
8, 30, 25, 20, 15, 10, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 0, 38, 0, 38,
5, 5, 5, 15, 0, 38, 38, 0, 15, 10,
0, 38, 38, 15, 0, 5, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 0, 38,
0, 38, 5, 5, 5, 15, 0, 38, 38, 0,
15, 10, 0, 38, 38, 15, 0, 5, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38, 38, 38, 38,
38, 38, 38, 38, 38, 38, 38
};
register int hval = len;
switch (hval)
{
default:
hval += asso_values[(unsigned char)str[1]+1];
/*FALLTHROUGH*/
case 1:
hval += asso_values[(unsigned char)str[0]];
break;
}
return hval;
}
#ifdef __GNUC__
__inline
#ifdef __GNUC_STDC_INLINE__
__attribute__ ((__gnu_inline__))
#endif
#endif
const char *
find_block_tag (str, len)
register const char *str;
register unsigned int len;
{
enum
{
TOTAL_KEYWORDS = 24,
MIN_WORD_LENGTH = 1,
MAX_WORD_LENGTH = 10,
MIN_HASH_VALUE = 1,
MAX_HASH_VALUE = 37
};
static const char * const wordlist[] =
{
"",
"p",
"dl",
"div",
"math",
"table",
"",
"ul",
"del",
"form",
"blockquote",
"figure",
"ol",
"fieldset",
"",
"h1",
"",
"h6",
"pre",
"", "",
"script",
"h5",
"noscript",
"",
"style",
"iframe",
"h4",
"ins",
"", "", "",
"h3",
"", "", "", "",
"h2"
};
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
{
register int key = hash_block_tag (str, len);
if (key <= MAX_HASH_VALUE && key >= 0)
{
register const char *s = wordlist[key];
if ((((unsigned char)*str ^ (unsigned char)*s) & ~32) == 0 && !gperf_case_strncmp (str, s, len) && s[len] == '\0')
return s;
}
}
return 0;
}

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%language=ANSI-C
%define lookup-function-name is_allowed_named_entity
%compare-strncmp
%readonly-tables
%define hash-function-name hash_html_entity
%enum
%includes
%{
#include <stdlib.h>
/* Parsers tend to choke on entities with values greater than this */
const u_int32_t max_num_entity_val = 0x10ffff;
/* Any numeric entity longer than this is obviously above max_num_entity_val
* used to avoid dealing with overflows. */
const size_t MAX_NUM_ENTITY_LEN = 7;
inline int is_valid_numeric_entity(uint32_t entity_val)
{
/* Some XML parsers will choke on entities with certain
* values (mostly control characters.)
*
* According to lxml these are all problematic:
*
* [xrange(0, 8),
* xrange(11, 12),
* xrange(14, 31),
* xrange(55296, 57343),
* xrange(65534, 65535)]
*/
return (entity_val > 8
&& (entity_val != 11 && entity_val != 12)
&& (entity_val < 14 || entity_val > 31)
&& (entity_val < 55296 || entity_val > 57343)
&& (entity_val != 65534 && entity_val != 65535)
&& entity_val <= max_num_entity_val);
}
%}
%%
&AElig;
&Aacute;
&Acirc;
&Agrave;
&Alpha;
&Aring;
&Atilde;
&Auml;
&Beta;
&Ccedil;
&Chi;
&Dagger;
&Delta;
&ETH;
&Eacute;
&Ecirc;
&Egrave;
&Epsilon;
&Eta;
&Euml;
&Gamma;
&Iacute;
&Icirc;
&Igrave;
&Iota;
&Iuml;
&Kappa;
&Lambda;
&Mu;
&Ntilde;
&Nu;
&OElig;
&Oacute;
&Ocirc;
&Ograve;
&Omega;
&Omicron;
&Oslash;
&Otilde;
&Ouml;
&Phi;
&Pi;
&Prime;
&Psi;
&Rho;
&Scaron;
&Sigma;
&THORN;
&Tau;
&Theta;
&Uacute;
&Ucirc;
&Ugrave;
&Upsilon;
&Uuml;
&Xi;
&Yacute;
&Yuml;
&Zeta;
&aacute;
&acirc;
&acute;
&aelig;
&agrave;
&alefsym;
&alpha;
&amp;
&and;
&ang;
&apos;
&aring;
&asymp;
&atilde;
&auml;
&bdquo;
&beta;
&brvbar;
&bull;
&cap;
&ccedil;
&cedil;
&cent;
&chi;
&circ;
&clubs;
&cong;
&copy;
&crarr;
&cup;
&curren;
&dArr;
&dagger;
&darr;
&deg;
&delta;
&diams;
&divide;
&eacute;
&ecirc;
&egrave;
&empty;
&emsp;
&ensp;
&epsilon;
&equiv;
&eta;
&eth;
&euml;
&euro;
&exist;
&fnof;
&forall;
&frac12;
&frac14;
&frac34;
&frasl;
&gamma;
&ge;
&gt;
&hArr;
&harr;
&hearts;
&hellip;
&iacute;
&icirc;
&iexcl;
&igrave;
&image;
&infin;
&int;
&iota;
&iquest;
&isin;
&iuml;
&kappa;
&lArr;
&lambda;
&lang;
&laquo;
&larr;
&lceil;
&ldquo;
&le;
&lfloor;
&lowast;
&loz;
&lrm;
&lsaquo;
&lsquo;
&lt;
&macr;
&mdash;
&micro;
&middot;
&minus;
&mu;
&nabla;
&nbsp;
&ndash;
&ne;
&ni;
&not;
&notin;
&nsub;
&ntilde;
&nu;
&oacute;
&ocirc;
&oelig;
&ograve;
&oline;
&omega;
&omicron;
&oplus;
&or;
&ordf;
&ordm;
&oslash;
&otilde;
&otimes;
&ouml;
&para;
&part;
&permil;
&perp;
&phi;
&pi;
&piv;
&plusmn;
&pound;
&prime;
&prod;
&prop;
&psi;
&quot;
&rArr;
&radic;
&rang;
&raquo;
&rarr;
&rceil;
&rdquo;
&real;
&reg;
&rfloor;
&rho;
&rlm;
&rsaquo;
&rsquo;
&sbquo;
&scaron;
&sdot;
&sect;
&shy;
&sigma;
&sigmaf;
&sim;
&spades;
&sub;
&sube;
&sum;
&sup1;
&sup2;
&sup3;
&sup;
&supe;
&szlig;
&tau;
&there4;
&theta;
&thetasym;
&thinsp;
&thorn;
&tilde;
&times;
&trade;
&uArr;
&uacute;
&uarr;
&ucirc;
&ugrave;
&uml;
&upsih;
&upsilon;
&uuml;
&weierp;
&xi;
&yacute;
&yen;
&yuml;
&zeta;
&zwj;
&zwnj;

2661
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SnudownTest/src/markdown.h Normal file
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/* markdown.h - generic markdown parser */
/*
* Copyright (c) 2009, Natacha Porté
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef UPSKIRT_MARKDOWN_H
#define UPSKIRT_MARKDOWN_H
#include "buffer.h"
#include "autolink.h"
#ifdef __cplusplus
extern "C" {
#endif
#define SUNDOWN_VERSION "1.16.0"
#define SUNDOWN_VER_MAJOR 1
#define SUNDOWN_VER_MINOR 16
#define SUNDOWN_VER_REVISION 0
/********************
* TYPE DEFINITIONS *
********************/
/* mkd_autolink - type of autolink */
enum mkd_autolink {
MKDA_NOT_AUTOLINK, /* used internally when it is not an autolink*/
MKDA_NORMAL, /* normal http/http/ftp/mailto/etc link */
MKDA_EMAIL, /* e-mail link without explit mailto: */
};
enum mkd_tableflags {
MKD_TABLE_ALIGN_L = 1,
MKD_TABLE_ALIGN_R = 2,
MKD_TABLE_ALIGN_CENTER = 3,
MKD_TABLE_ALIGNMASK = 3,
MKD_TABLE_HEADER = 4
};
enum mkd_extensions {
MKDEXT_NO_INTRA_EMPHASIS = (1 << 0),
MKDEXT_TABLES = (1 << 1),
MKDEXT_FENCED_CODE = (1 << 2),
MKDEXT_AUTOLINK = (1 << 3),
MKDEXT_STRIKETHROUGH = (1 << 4),
MKDEXT_SPACE_HEADERS = (1 << 6),
MKDEXT_SUPERSCRIPT = (1 << 7),
MKDEXT_LAX_SPACING = (1 << 8),
MKDEXT_NO_EMAIL_AUTOLINK = (1 << 9),
};
/* sd_callbacks - functions for rendering parsed data */
struct sd_callbacks {
/* block level callbacks - NULL skips the block */
void (*blockcode)(struct buf *ob, const struct buf *text, const struct buf *lang, void *opaque);
void (*blockquote)(struct buf *ob, const struct buf *text, void *opaque);
void (*blockhtml)(struct buf *ob,const struct buf *text, void *opaque);
void (*header)(struct buf *ob, const struct buf *text, int level, void *opaque);
void (*hrule)(struct buf *ob, void *opaque);
void (*list)(struct buf *ob, const struct buf *text, int flags, void *opaque);
void (*listitem)(struct buf *ob, const struct buf *text, int flags, void *opaque);
void (*paragraph)(struct buf *ob, const struct buf *text, void *opaque);
void (*table)(struct buf *ob, const struct buf *header, const struct buf *body, void *opaque);
void (*table_row)(struct buf *ob, const struct buf *text, void *opaque);
void (*table_cell)(struct buf *ob, const struct buf *text, int flags, void *opaque, int col_span);
/* span level callbacks - NULL or return 0 prints the span verbatim */
int (*autolink)(struct buf *ob, const struct buf *link, enum mkd_autolink type, void *opaque);
int (*codespan)(struct buf *ob, const struct buf *text, void *opaque);
int (*double_emphasis)(struct buf *ob, const struct buf *text, void *opaque);
int (*emphasis)(struct buf *ob, const struct buf *text, void *opaque);
int (*image)(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *alt, void *opaque);
int (*linebreak)(struct buf *ob, void *opaque);
int (*link)(struct buf *ob, const struct buf *link, const struct buf *title, const struct buf *content, void *opaque);
int (*raw_html_tag)(struct buf *ob, const struct buf *tag, void *opaque);
int (*triple_emphasis)(struct buf *ob, const struct buf *text, void *opaque);
int (*strikethrough)(struct buf *ob, const struct buf *text, void *opaque);
int (*superscript)(struct buf *ob, const struct buf *text, void *opaque);
/* low level callbacks - NULL copies input directly into the output */
void (*entity)(struct buf *ob, const struct buf *entity, void *opaque);
void (*normal_text)(struct buf *ob, const struct buf *text, void *opaque);
/* header and footer */
void (*doc_header)(struct buf *ob, void *opaque);
void (*doc_footer)(struct buf *ob, void *opaque);
};
struct sd_markdown;
/*********
* FLAGS *
*********/
/* list/listitem flags */
#define MKD_LIST_ORDERED 1
#define MKD_LI_BLOCK 2 /* <li> containing block data */
/**********************
* EXPORTED FUNCTIONS *
**********************/
extern struct sd_markdown *
sd_markdown_new(
unsigned int extensions,
size_t max_nesting,
size_t max_table_cols,
const struct sd_callbacks *callbacks,
void *opaque);
extern void
sd_markdown_render(struct buf *ob, const uint8_t *document, size_t doc_size, struct sd_markdown *md);
extern void
sd_markdown_free(struct sd_markdown *md);
extern void
sd_version(int *major, int *minor, int *revision);
#ifdef __cplusplus
}
#endif
#endif
/* vim: set filetype=c: */

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#include "stack.h"
#include <string.h>
int
stack_grow(struct stack *st, size_t new_size)
{
void **new_st;
if (st->asize >= new_size)
return 0;
new_st = realloc(st->item, new_size * sizeof(void *));
if (new_st == NULL)
return -1;
memset(new_st + st->asize, 0x0,
(new_size - st->asize) * sizeof(void *));
st->item = new_st;
st->asize = new_size;
if (st->size > new_size)
st->size = new_size;
return 0;
}
void
stack_free(struct stack *st)
{
if (!st)
return;
free(st->item);
st->item = NULL;
st->size = 0;
st->asize = 0;
}
int
stack_init(struct stack *st, size_t initial_size)
{
st->item = NULL;
st->size = 0;
st->asize = 0;
if (!initial_size)
initial_size = 8;
return stack_grow(st, initial_size);
}
void *
stack_pop(struct stack *st)
{
if (!st->size)
return NULL;
return st->item[--st->size];
}
int
stack_push(struct stack *st, void *item)
{
if (stack_grow(st, st->size * 2) < 0)
return -1;
st->item[st->size++] = item;
return 0;
}
void *
stack_top(struct stack *st)
{
if (!st->size)
return NULL;
return st->item[st->size - 1];
}

29
SnudownTest/src/stack.h Normal file
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#ifndef STACK_H__
#define STACK_H__
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
struct stack {
void **item;
size_t size;
size_t asize;
};
void stack_free(struct stack *);
int stack_grow(struct stack *, size_t);
int stack_init(struct stack *, size_t);
int stack_push(struct stack *, void *);
void *stack_pop(struct stack *);
void *stack_top(struct stack *);
#ifdef __cplusplus
}
#endif
#endif

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#include "stack.h"
#include <string.h>
int
stack_grow(struct stack *st, size_t new_size)
{
void **new_st;
if (st->asize >= new_size)
return 0;
new_st = realloc(st->item, new_size * sizeof(void *));
if (new_st == NULL)
return -1;
memset(new_st + st->asize, 0x0,
(new_size - st->asize) * sizeof(void *));
st->item = new_st;
st->asize = new_size;
if (st->size > new_size)
st->size = new_size;
return 0;
}
void
stack_free(struct stack *st)
{
if (!st)
return;
free(st->item);
st->item = NULL;
st->size = 0;
st->asize = 0;
}
int
stack_init(struct stack *st, size_t initial_size)
{
st->item = NULL;
st->size = 0;
st->asize = 0;
if (!initial_size)
initial_size = 8;
return stack_grow(st, initial_size);
}
void *
stack_pop(struct stack *st)
{
if (!st->size)
return NULL;
return st->item[--st->size];
}
int
stack_push(struct stack *st, void *item)
{
if (stack_grow(st, st->size * 2) < 0)
return -1;
st->item[st->size++] = item;
return 0;
}
void *
stack_top(struct stack *st)
{
if (!st->size)
return NULL;
return st->item[st->size - 1];
}

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#ifndef STACK_H__
#define STACK_H__
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
struct stack {
void **item;
size_t size;
size_t asize;
};
void stack_free(struct stack *);
int stack_grow(struct stack *, size_t);
int stack_init(struct stack *, size_t);
int stack_push(struct stack *, void *);
void *stack_pop(struct stack *);
void *stack_top(struct stack *);
#ifdef __cplusplus
}
#endif
#endif

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/* stdint.h standard header */
#pragma once
#ifndef _STDINT
#define _STDINT
#ifndef RC_INVOKED
#include <yvals.h>
/* NB: assumes
byte has 8 bits
long is 32 bits
pointer can convert to and from long long
long long is longest type
*/
_C_STD_BEGIN
/* TYPE DEFINITIONS */
typedef signed char int8_t;
typedef short int16_t;
typedef int int32_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef signed char int_least8_t;
typedef short int_least16_t;
typedef int int_least32_t;
typedef unsigned char uint_least8_t;
typedef unsigned short uint_least16_t;
typedef unsigned int uint_least32_t;
typedef char int_fast8_t;
typedef int int_fast16_t;
typedef int int_fast32_t;
typedef unsigned char uint_fast8_t;
typedef unsigned int uint_fast16_t;
typedef unsigned int uint_fast32_t;
#ifndef _INTPTR_T_DEFINED
#define _INTPTR_T_DEFINED
#ifdef _WIN64
typedef __int64 intptr_t;
#else /* _WIN64 */
typedef _W64 int intptr_t;
#endif /* _WIN64 */
#endif /* _INTPTR_T_DEFINED */
#ifndef _UINTPTR_T_DEFINED
#define _UINTPTR_T_DEFINED
#ifdef _WIN64
typedef unsigned __int64 uintptr_t;
#else /* _WIN64 */
typedef _W64 unsigned int uintptr_t;
#endif /* _WIN64 */
#endif /* _UINTPTR_T_DEFINED */
typedef _Longlong int64_t;
typedef _ULonglong uint64_t;
typedef _Longlong int_least64_t;
typedef _ULonglong uint_least64_t;
typedef _Longlong int_fast64_t;
typedef _ULonglong uint_fast64_t;
typedef _Longlong intmax_t;
typedef _ULonglong uintmax_t;
/* LIMIT MACROS */
#define INT8_MIN (-0x7f - _C2)
#define INT16_MIN (-0x7fff - _C2)
#define INT32_MIN (-0x7fffffff - _C2)
#define INT8_MAX 0x7f
#define INT16_MAX 0x7fff
#define INT32_MAX 0x7fffffff
#define UINT8_MAX 0xff
#define UINT16_MAX 0xffff
#define UINT32_MAX 0xffffffff
#define INT_LEAST8_MIN (-0x7f - _C2)
#define INT_LEAST16_MIN (-0x7fff - _C2)
#define INT_LEAST32_MIN (-0x7fffffff - _C2)
#define INT_LEAST8_MAX 0x7f
#define INT_LEAST16_MAX 0x7fff
#define INT_LEAST32_MAX 0x7fffffff
#define UINT_LEAST8_MAX 0xff
#define UINT_LEAST16_MAX 0xffff
#define UINT_LEAST32_MAX 0xffffffff
#define INT_FAST8_MIN (-0x7f - _C2)
#define INT_FAST16_MIN (-0x7fff - _C2)
#define INT_FAST32_MIN (-0x7fffffff - _C2)
#define INT_FAST8_MAX 0x7f
#define INT_FAST16_MAX 0x7fff
#define INT_FAST32_MAX 0x7fffffff
#define UINT_FAST8_MAX 0xff
#define UINT_FAST16_MAX 0xffff
#define UINT_FAST32_MAX 0xffffffff
#if _INTPTR == 0 || _INTPTR == 1
#define INTPTR_MAX 0x7fffffff
#define INTPTR_MIN (-INTPTR_MAX - _C2)
#define UINTPTR_MAX 0xffffffff
#else /* _INTPTR == 2 */
#define INTPTR_MIN (-_LLONG_MAX - _C2)
#define INTPTR_MAX _LLONG_MAX
#define UINTPTR_MAX _ULLONG_MAX
#endif /* _INTPTR */
#define INT8_C(x) (x)
#define INT16_C(x) (x)
#define INT32_C(x) ((x) + (INT32_MAX - INT32_MAX))
#define UINT8_C(x) (x)
#define UINT16_C(x) (x)
#define UINT32_C(x) ((x) + (UINT32_MAX - UINT32_MAX))
#ifdef _WIN64
#define PTRDIFF_MIN INT64_MIN
#define PTRDIFF_MAX INT64_MAX
#else /* _WIN64 */
#define PTRDIFF_MIN INT32_MIN
#define PTRDIFF_MAX INT32_MAX
#endif /* _WIN64 */
#define SIG_ATOMIC_MIN INT32_MIN
#define SIG_ATOMIC_MAX INT32_MAX
#ifndef SIZE_MAX
#ifdef _WIN64
#define SIZE_MAX UINT64_MAX
#else /* _WIN64 */
#define SIZE_MAX UINT32_MAX
#endif /* _WIN64 */
#endif /* SIZE_MAX */
#define WCHAR_MIN 0x0000
#define WCHAR_MAX 0xffff
#define WINT_MIN 0x0000
#define WINT_MAX 0xffff
#define INT64_MIN (-0x7fffffffffffffff - _C2)
#define INT64_MAX 0x7fffffffffffffff
#define UINT64_MAX 0xffffffffffffffffU
#define INT_LEAST64_MIN (-0x7fffffffffffffff - _C2)
#define INT_LEAST64_MAX 0x7fffffffffffffff
#define UINT_LEAST64_MAX 0xffffffffffffffffU
#define INT_FAST64_MIN (-0x7fffffffffffffff - _C2)
#define INT_FAST64_MAX 0x7fffffffffffffff
#define UINT_FAST64_MAX 0xffffffffffffffffU
#define INTMAX_MIN (-0x7fffffffffffffff - _C2)
#define INTMAX_MAX 0x7fffffffffffffff
#define UINTMAX_MAX 0xffffffffffffffffU
#define INT64_C(x) ((x) + (INT64_MAX - INT64_MAX))
#define UINT64_C(x) ((x) + (UINT64_MAX - UINT64_MAX))
#define INTMAX_C(x) INT64_C(x)
#define UINTMAX_C(x) UINT64_C(x)
_C_STD_END
#endif /* RC_INVOKED */
#endif /* _STDINT */
#if defined(_STD_USING)
using _CSTD int8_t; using _CSTD int16_t;
using _CSTD int32_t; using _CSTD int64_t;
using _CSTD uint8_t; using _CSTD uint16_t;
using _CSTD uint32_t; using _CSTD uint64_t;
using _CSTD int_least8_t; using _CSTD int_least16_t;
using _CSTD int_least32_t; using _CSTD int_least64_t;
using _CSTD uint_least8_t; using _CSTD uint_least16_t;
using _CSTD uint_least32_t; using _CSTD uint_least64_t;
using _CSTD intmax_t; using _CSTD uintmax_t;
using _CSTD uintptr_t;
using _CSTD intptr_t;
using _CSTD int_fast8_t; using _CSTD int_fast16_t;
using _CSTD int_fast32_t; using _CSTD int_fast64_t;
using _CSTD uint_fast8_t; using _CSTD uint_fast16_t;
using _CSTD uint_fast32_t; using _CSTD uint_fast64_t;
#endif /* defined(_STD_USING) */
/*
* Copyright (c) 1992-2009 by P.J. Plauger. ALL RIGHTS RESERVED.
* Consult your license regarding permissions and restrictions.
V5.20:0009 */

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LIBRARY SUNDOWN
EXPORTS
sdhtml_renderer
sdhtml_toc_renderer
sdhtml_smartypants
bufgrow
bufnew
bufcstr
bufprefix
bufput
bufputs
bufputc
bufrelease
bufreset
bufslurp
bufprintf
sd_markdown_new
sd_markdown_render
sd_markdown_free
sd_version

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#!/usr/bin/python
# -*- coding: utf-8 -*-
import snudown
import unittest
import itertools
import cStringIO as StringIO
cases = {
'': '',
'http://www.reddit.com':
'<p><a href="http://www.reddit.com">http://www.reddit.com</a></p>\n',
'http://www.reddit.com/a\x00b':
'<p><a href="http://www.reddit.com/ab">http://www.reddit.com/ab</a></p>\n',
'foo@example.com':
'<p><a href="mailto:foo@example.com">foo@example.com</a></p>\n',
'[foo](http://en.wikipedia.org/wiki/Link_(film\))':
'<p><a href="http://en.wikipedia.org/wiki/Link_(film)">foo</a></p>\n',
'(http://tsfr.org)':
'<p>(<a href="http://tsfr.org">http://tsfr.org</a>)</p>\n',
'[A link with a /r/subreddit in it](/lol)':
'<p><a href="/lol">A link with a /r/subreddit in it</a></p>\n',
'[A link with a http://www.url.com in it](/lol)':
'<p><a href="/lol">A link with a http://www.url.com in it</a></p>\n',
'[Empty Link]()':
'<p>[Empty Link]()</p>\n',
'http://en.wikipedia.org/wiki/café_racer':
'<p><a href="http://en.wikipedia.org/wiki/caf%C3%A9_racer">http://en.wikipedia.org/wiki/café_racer</a></p>\n',
'#####################################################hi':
'<h6>###############################################hi</h6>\n',
'[foo](http://bar\nbar)':
'<p><a href="http://bar%0Abar">foo</a></p>\n',
'/r/test':
'<p><a href="/r/test">/r/test</a></p>\n',
'Words words /r/test words':
'<p>Words words <a href="/r/test">/r/test</a> words</p>\n',
'/r/':
'<p>/r/</p>\n',
r'escaped \/r/test':
'<p>escaped /r/test</p>\n',
'ampersands http://www.google.com?test&blah':
'<p>ampersands <a href="http://www.google.com?test&amp;blah">http://www.google.com?test&amp;blah</a></p>\n',
'[_regular_ link with nesting](/test)':
'<p><a href="/test"><em>regular</em> link with nesting</a></p>\n',
' www.a.co?with&test':
'<p><a href="http://www.a.co?with&amp;test">www.a.co?with&amp;test</a></p>\n',
r'Normal^superscript':
'<p>Normal<sup>superscript</sup></p>\n',
r'Escape\^superscript':
'<p>Escape^superscript</p>\n',
r'~~normal strikethrough~~':
'<p><del>normal strikethrough</del></p>\n',
r'\~~escaped strikethrough~~':
'<p>~~escaped strikethrough~~</p>\n',
'anywhere\x03, you':
'<p>anywhere, you</p>\n',
'[Test](//test)':
'<p><a href="//test">Test</a></p>\n',
'[Test](//#test)':
'<p><a href="//#test">Test</a></p>\n',
'[Test](#test)':
'<p><a href="#test">Test</a></p>\n',
'[Test](git://github.com)':
'<p><a href="git://github.com">Test</a></p>\n',
'[Speculation](//?)':
'<p><a href="//?">Speculation</a></p>\n',
'/r/sr_with_underscores':
'<p><a href="/r/sr_with_underscores">/r/sr_with_underscores</a></p>\n',
'[Test](///#test)':
'<p><a href="///#test">Test</a></p>\n',
'/r/multireddit+test+yay':
'<p><a href="/r/multireddit+test+yay">/r/multireddit+test+yay</a></p>\n',
'<test>':
'<p>&lt;test&gt;</p>\n',
'words_with_underscores':
'<p>words_with_underscores</p>\n',
'words*with*asterisks':
'<p>words<em>with</em>asterisks</p>\n',
'~test':
'<p>~test</p>\n',
'/u/test':
'<p><a href="/u/test">/u/test</a></p>\n',
'/u/test/m/test test':
'<p><a href="/u/test/m/test">/u/test/m/test</a> test</p>\n',
'/U/nope':
'<p>/U/nope</p>\n',
'/r/test/m/test test':
'<p><a href="/r/test/m/test">/r/test/m/test</a> test</p>\n',
'/r/test/w/test test':
'<p><a href="/r/test/w/test">/r/test/w/test</a> test</p>\n',
'/r/test/comments/test test':
'<p><a href="/r/test/comments/test">/r/test/comments/test</a> test</p>\n',
'/u/test/commentscommentscommentscommentscommentscommentscomments/test test':
'<p><a href="/u/test/commentscommentscommentscommentscommentscommentscomments/test">/u/test/commentscommentscommentscommentscommentscommentscomments/test</a> test</p>\n',
'a /u/reddit':
'<p>a <a href="/u/reddit">/u/reddit</a></p>\n',
'u/reddit':
'<p><a href="/u/reddit">u/reddit</a></p>\n',
'a u/reddit':
'<p>a <a href="/u/reddit">u/reddit</a></p>\n',
'a u/reddit/foobaz':
'<p>a <a href="/u/reddit/foobaz">u/reddit/foobaz</a></p>\n',
'foo:u/reddit':
'<p>foo:<a href="/u/reddit">u/reddit</a></p>\n',
'fuu/reddit':
'<p>fuu/reddit</p>\n',
# Don't treat unicode punctuation as a word boundary for now
u'a。u/reddit'.encode('utf8'):
u'<p>a。u/reddit</p>\n'.encode('utf8'),
'\\/u/me':
'<p>/u/me</p>\n',
'\\\\/u/me':
'<p>\\<a href="/u/me">/u/me</a></p>\n',
'\\u/me':
'<p>\\<a href="/u/me">u/me</a></p>\n',
'\\\\u/me':
'<p>\\<a href="/u/me">u/me</a></p>\n',
'u\\/me':
'<p>u/me</p>\n',
'*u/me*':
'<p><em><a href="/u/me">u/me</a></em></p>\n',
'foo^u/me':
'<p>foo<sup><a href="/u/me">u/me</a></sup></p>\n',
'*foo*u/me':
'<p><em>foo</em><a href="/u/me">u/me</a></p>\n',
'u/me':
'<p><a href="/u/me">u/me</a></p>\n',
'/u/me':
'<p><a href="/u/me">/u/me</a></p>\n',
'u/m':
'<p>u/m</p>\n',
'/u/m':
'<p>/u/m</p>\n',
'/f/oobar':
'<p>/f/oobar</p>\n',
'f/oobar':
'<p>f/oobar</p>\n',
'/r/test/commentscommentscommentscommentscommentscommentscomments/test test':
'<p><a href="/r/test/commentscommentscommentscommentscommentscommentscomments/test">/r/test/commentscommentscommentscommentscommentscommentscomments/test</a> test</p>\n',
'blah \\':
'<p>blah \\</p>\n',
'/r/whatever: fork':
'<p><a href="/r/whatever">/r/whatever</a>: fork</p>\n',
'/r/t:timereddit':
'<p><a href="/r/t:timereddit">/r/t:timereddit</a></p>\n',
'/r/reddit.com':
'<p><a href="/r/reddit.com">/r/reddit.com</a></p>\n',
'/r/not.cool':
'<p><a href="/r/not">/r/not</a>.cool</p>\n',
'/r/very+clever+multireddit+reddit.com+t:fork+yay':
'<p><a href="/r/very+clever+multireddit+reddit.com+t:fork+yay">/r/very+clever+multireddit+reddit.com+t:fork+yay</a></p>\n',
'/r/t:heatdeathoftheuniverse':
'<p><a href="/r/t:heatdeathoftheuniverse">/r/t:heatdeathoftheuniverse</a></p>\n',
'/r/all-minus-something':
'<p><a href="/r/all-minus-something">/r/all-minus-something</a></p>\n',
'/r/notall-minus':
'<p><a href="/r/notall">/r/notall</a>-minus</p>\n',
'a /r/reddit.com':
'<p>a <a href="/r/reddit.com">/r/reddit.com</a></p>\n',
'a r/reddit.com':
'<p>a <a href="/r/reddit.com">r/reddit.com</a></p>\n',
'foo:r/reddit.com':
'<p>foo:<a href="/r/reddit.com">r/reddit.com</a></p>\n',
'foobar/reddit.com':
'<p>foobar/reddit.com</p>\n',
u'a。r/reddit.com'.encode('utf8'):
u'<p>a。r/reddit.com</p>\n'.encode('utf8'),
'/R/reddit.com':
'<p>/R/reddit.com</p>\n',
'/r/irc://foo.bar/':
'<p><a href="/r/irc">/r/irc</a>://foo.bar/</p>\n',
'/r/t:irc//foo.bar/':
'<p><a href="/r/t:irc//foo">/r/t:irc//foo</a>.bar/</p>\n',
'/r/all-irc://foo.bar/':
'<p><a href="/r/all-irc">/r/all-irc</a>://foo.bar/</p>\n',
'/r/foo+irc://foo.bar/':
'<p><a href="/r/foo+irc">/r/foo+irc</a>://foo.bar/</p>\n',
'/r/www.example.com':
'<p><a href="/r/www">/r/www</a>.example.com</p>\n',
'.http://reddit.com':
'<p>.<a href="http://reddit.com">http://reddit.com</a></p>\n',
'[r://<http://reddit.com/>](/aa)':
'<p><a href="/aa">r://<a href="http://reddit.com/">http://reddit.com/</a></a></p>\n',
'/u/http://www.reddit.com/user/reddit':
'<p><a href="/u/http">/u/http</a>://<a href="http://www.reddit.com/user/reddit">www.reddit.com/user/reddit</a></p>\n',
'www.http://example.com/':
'<p><a href="http://www.http://example.com/">www.http://example.com/</a></p>\n',
('|' * 5) + '\n' + ('-|' * 5) + '\n|\n':
'<table><thead>\n<tr>\n' + ('<th></th>\n' * 4) + '</tr>\n</thead><tbody>\n<tr>\n<td colspan="4" ></td>\n</tr>\n</tbody></table>\n',
('|' * 2) + '\n' + ('-|' * 2) + '\n|\n':
'<table><thead>\n<tr>\n' + ('<th></th>\n' * 1) + '</tr>\n</thead><tbody>\n<tr>\n<td></td>\n</tr>\n</tbody></table>\n',
('|' * 65) + '\n' + ('-|' * 65) + '\n|\n':
'<table><thead>\n<tr>\n' + ('<th></th>\n' * 64) + '</tr>\n</thead><tbody>\n<tr>\n<td colspan="64" ></td>\n</tr>\n</tbody></table>\n',
('|' * 66) + '\n' + ('-|' * 66) + '\n|\n':
'<p>' + ('|' * 66) + '\n' + ('-|' * 66) + '\n|' + '</p>\n',
'&thetasym;':
'<p>&thetasym;</p>\n',
'&foobar;':
'<p>&amp;foobar;</p>\n',
'&nbsp':
'<p>&amp;nbsp</p>\n',
'&#foobar;':
'<p>&amp;#foobar;</p>\n',
'&#xfoobar;':
'<p>&amp;#xfoobar;</p>\n',
'&#9999999999;':
'<p>&amp;#9999999999;</p>\n',
'&#99;':
'<p>&#99;</p>\n',
'&#x7E;':
'<p>&#x7E;</p>\n',
'&#X7E;':
'<p>&#x7E;</p>\n',
'&frac12;':
'<p>&frac12;</p>\n',
'aaa&frac12;aaa':
'<p>aaa&frac12;aaa</p>\n',
'&':
'<p>&amp;</p>\n',
'&;':
'<p>&amp;;</p>\n',
'&#;':
'<p>&amp;#;</p>\n',
'&#;':
'<p>&amp;#;</p>\n',
'&#x;':
'<p>&amp;#x;</p>\n',
}
# Test that every numeric entity is encoded as
# it should be.
ILLEGAL_NUMERIC_ENTS = frozenset(itertools.chain(
xrange(0, 9),
xrange(11, 13),
xrange(14, 32),
xrange(55296, 57344),
xrange(65534, 65536),
))
ent_test_key = ''
ent_test_val = ''
for i in xrange(65550):
ent_testcase = '&#%d;&#x%x;' % (i, i)
ent_test_key += ent_testcase
if i in ILLEGAL_NUMERIC_ENTS:
ent_test_val += ent_testcase.replace('&', '&amp;')
else:
ent_test_val += ent_testcase
cases[ent_test_key] = '<p>%s</p>\n' % ent_test_val
wiki_cases = {
'<table scope="foo"bar>':
'<p><table scope="foo"></p>\n',
'<table scope="foo"bar colspan="2">':
'<p><table scope="foo" colspan="2"></p>\n',
'<table scope="foo" colspan="2"bar>':
'<p><table scope="foo" colspan="2"></p>\n',
'<table scope="foo">':
'<p><table scope="foo"></p>\n',
'<table scop="foo">':
'<p><table></p>\n',
'<table ff= scope="foo">':
'<p><table scope="foo"></p>\n',
'<table colspan= scope="foo">':
'<p><table scope="foo"></p>\n',
'<table scope=ff"foo">':
'<p><table scope="foo"></p>\n',
'<table scope="foo" test="test">':
'<p><table scope="foo"></p>\n',
'<table scope="foo" longervalue="testing test" scope="test">':
'<p><table scope="foo" scope="test"></p>\n',
'<table scope=`"foo">':
'<p><table scope="foo"></p>\n',
'<table scope="foo bar">':
'<p><table scope="foo bar"></p>\n',
'<table scope=\'foo colspan="foo">':
'<p><table></p>\n',
'<table scope=\'foo\' colspan="foo">':
'<p><table scope="foo" colspan="foo"></p>\n',
'<table scope=>':
'<p><table></p>\n',
'<table scope= colspan="test" scope=>':
'<p><table colspan="test"></p>\n',
'<table colspan="\'test">':
'<p><table colspan="&#39;test"></p>\n',
'<table scope="foo" colspan="2">':
'<p><table scope="foo" colspan="2"></p>\n',
'<table scope="foo" colspan="2" ff="test">':
'<p><table scope="foo" colspan="2"></p>\n',
'<table ff="test" scope="foo" colspan="2" colspan=>':
'<p><table scope="foo" colspan="2"></p>\n',
' <table colspan=\'\'\' a="" \' scope="foo">':
'<p><table scope="foo"></p>\n',
}
class SnudownTestCase(unittest.TestCase):
def __init__(self, renderer=snudown.RENDERER_USERTEXT):
self.renderer = renderer
unittest.TestCase.__init__(self)
def runTest(self):
output = snudown.markdown(self.input, renderer=self.renderer)
for i, (a, b) in enumerate(zip(repr(self.expected_output),
repr(output))):
if a != b:
io = StringIO.StringIO()
print >> io, "TEST FAILED:"
print >> io, " input: %s" % repr(self.input)
print >> io, " expected: %s" % repr(self.expected_output)
print >> io, " actual: %s" % repr(output)
print >> io, " %s" % (' ' * i + '^')
self.fail(io.getvalue())
def test_snudown():
suite = unittest.TestSuite()
for input, expected_output in wiki_cases.iteritems():
case = SnudownTestCase(renderer=snudown.RENDERER_WIKI)
case.input = input
case.expected_output = expected_output
suite.addTest(case)
for input, expected_output in cases.iteritems():
case = SnudownTestCase()
case.input = input
case.expected_output = expected_output
suite.addTest(case)
return suite

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import os
import sys
import string
import tkinter
import time
import traceback
time.clock()
LINKTYPES_L = ['Symbolic file', 'Hardlink file', 'Symbolic dir', 'Junction dir']
LINKTYPES = {'Symbolic file': '',
'Hardlink file': '/H',
'Symbolic dir': '/D',
'Junction dir': '/J'
}
LINKTYPES_DIR = ['Symbolic dir', 'Junction dir', LINKTYPES['Symbolic dir'], LINKTYPES['Junction dir']]
LINKTYPES_FILE = ['Symbolic file', 'Hardlink file', LINKTYPES['Symbolic file'], LINKTYPES['Hardlink file']]
TRACER_AUTOVERIFY_DELAY = 0.5
COLOR_BLACK = '#000'
COLOR_YELLOW = '#aa0'
COLOR_GREEN = '#0a0'
COLOR_RED = '#a00'
def assert_linktypes(linktype, symbolpath, actualpath):
if os.path.isdir(actualpath) and linktype not in LINKTYPES_DIR or \
os.path.isfile(actualpath) and linktype not in LINKTYPES_FILE:
message = 'Invalid linktype {linktype} for target path {target}'
message = message.format(linktype=repr(linktype), target=repr(actualpath))
raise TypeError(message)
def mklink(linktype, symbolpath, actualpath):
symbolpath = os.path.abspath(symbolpath)
actualpath = os.path.abspath(actualpath)
try:
assert_linktypes(linktype, symbolpath, actualpath)
except TypeError:
traceback.print_exc()
return False
command = 'mklink {linktype} "{symbolpath}" "{actualpath}"'
command = command.format(linktype=linktype,
symbolpath=symbolpath,
actualpath=actualpath)
print(''.join(c for c in command if c in string.printable))
status_code = os.system(command)
if status_code != 0:
return False
if linktype in LINKTYPES_DIR:
symtype = 'symlink' if linktype == '/D' else 'junction'
symlink_info = symtype + time.strftime('_%Y%m%d-%H%M%S.txt')
symlink_info = os.path.join(actualpath, symlink_info)
symlink_info = open(symlink_info, 'w')
symlink_info.write('actual: ' + actualpath)
symlink_info.write('\n')
symlink_info.write(symtype + ': ' + symbolpath)
symlink_info.close()
class LinkGUI:
def __init__(self):
self.t = tkinter.Tk()
self.tracer_nextautoverify = 0
self.tracer_lastkeystroke_verified = False
self.tracer_activewaiter = False
self.stringvar_actualpath = tkinter.StringVar()
self.stringvar_dropdown = tkinter.StringVar()
self.label_actualpath = tkinter.Label(self.t, text='Actual path:')
self.label_symbolpath = tkinter.Label(self.t, text='Symbol path:')
self.entry_actualpath = tkinter.Entry(self.t, width=70, textvariable=self.stringvar_actualpath)
self.entry_symbolpath = tkinter.Entry(self.t, width=70)
self.dropdown_linktype = tkinter.OptionMenu(self.t, self.stringvar_dropdown, *LINKTYPES_L)
self.dropdown_linktype.configure(width=15)
self.button_do_it = tkinter.Button(self.t, text='Do it.', command=self.do_it)
self.stringvar_actualpath.trace('w', self.tracewatcher)
self.stringvar_dropdown.trace('w', lambda *bb: self.tracer_verify_colors(False))
self.stringvar_actualpath.set(os.getcwd())
self.entry_symbolpath.insert(0, os.getcwd())
self.label_actualpath.grid(row=0, column=0, sticky='e')
self.label_symbolpath.grid(row=1, column=0, sticky='e')
self.entry_actualpath.grid(row=0, column=1, sticky='ew')
self.entry_symbolpath.grid(row=1, column=1, sticky='ew')
self.dropdown_linktype.grid(row=2, column=0)
self.button_do_it.grid(row=2, column=1, sticky='e')
self.t.grid_columnconfigure(1, weight=1)
self.t.mainloop()
def do_it(self, *bb):
linktype = self.stringvar_dropdown.get()
linktype = LINKTYPES[linktype]
actualpath = self.entry_actualpath.get()
symbolpath = self.entry_symbolpath.get()
status = mklink(linktype, actualpath=actualpath, symbolpath=symbolpath)
if status is False:
self.button_do_it.configure(bg=COLOR_RED)
else:
self.button_do_it.configure(bg=COLOR_GREEN)
def tracewatcher(self, *bb):
self.tracer_lastkeystroke_verified = False
self.tracer_nextautoverify = time.time() + TRACER_AUTOVERIFY_DELAY
if self.tracer_activewaiter is False:
self.tracer_verify()
def tracer_verify(self):
now = time.time()
if self.tracer_lastkeystroke_verified is True:
return
if now < self.tracer_nextautoverify:
delay = int(TRACER_AUTOVERIFY_DELAY * 1000)
self.t.after(delay, self.tracer_verify)
self.tracer_activewaiter = True
self.dropdown_linktype.config(fg=COLOR_YELLOW)
return
self.tracer_lastkeystroke_verified = True
self.tracer_activewaiter = False
self.tracer_verify_colors(set_for_me=True)
def tracer_verify_colors(self, set_for_me=False, *bb):
path = self.stringvar_actualpath.get()
linktype = self.stringvar_dropdown.get()
if os.path.isfile(path):
if set_for_me and linktype not in LINKTYPES_FILE:
self.stringvar_dropdown.set('Symbolic file')
return
if linktype in LINKTYPES_FILE:
self.dropdown_linktype.config(fg=COLOR_GREEN)
else:
self.dropdown_linktype.config(fg=COLOR_BLACK)
elif os.path.isdir(path):
if set_for_me and linktype not in LINKTYPES_DIR:
self.stringvar_dropdown.set('Symbolic dir')
return
if linktype in LINKTYPES_DIR:
self.dropdown_linktype.config(fg=COLOR_GREEN)
else:
self.dropdown_linktype.config(fg=COLOR_BLACK)
else:
self.dropdown_linktype.config(fg=COLOR_BLACK)
#mklink(LINKTYPE_SYMBOLIC_DIR, 'examples\\symbolic_dir', 'examples\\actual_dir')
#mklink(LINKTYPE_JUNCTION_DIR, 'examples\\junction_dir', 'examples\\actual_dir')
#mklink(LINKTYPE_SYMBOLIC_FILE, 'examples\\symbolic_file.txt', 'examples\\actual_file.txt')
#mklink(LINKTYPE_HARDLINK_FILE, 'examples\\hardlink_file.txt', 'examples\\actual_file.txt')
linker = LinkGUI()
print('[ {0} elapsed ]'.format(round(time.clock(), 3)))

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git filter-branch -f --index-filter "git rm -r --cached --ignore-unmatch SubredditBirthdays\sql.db" HEAD