1939 lines
66 KiB
Python
1939 lines
66 KiB
Python
import argparse
|
|
import bs4
|
|
import copy
|
|
import functools
|
|
import html
|
|
import io
|
|
import mimetypes
|
|
import os
|
|
import random
|
|
import re
|
|
import string
|
|
import sys
|
|
import tempfile
|
|
import tinycss2
|
|
import urllib.parse
|
|
import uuid
|
|
import zipfile
|
|
|
|
from voussoirkit import betterhelp
|
|
from voussoirkit import interactive
|
|
from voussoirkit import pathclass
|
|
from voussoirkit import pipeable
|
|
from voussoirkit import vlogging
|
|
|
|
log = vlogging.get_logger(__name__, 'epubfile')
|
|
|
|
HTML_LINK_PROPERTIES = {
|
|
'a': ['href'],
|
|
'audio': ['src'],
|
|
'image': ['href', 'xlink:href'],
|
|
'img': ['src'],
|
|
'link': ['href'],
|
|
'script': ['src'],
|
|
'source': ['src'],
|
|
'track': ['src'],
|
|
'video': ['src', 'poster'],
|
|
}
|
|
|
|
EXTENSION_MIMETYPES = {
|
|
'htm': 'application/xhtml+xml',
|
|
'html': 'application/xhtml+xml',
|
|
'otf': 'font/otf',
|
|
'pls': 'application/pls+xml',
|
|
'smi': 'application/smil+xml',
|
|
'smil': 'application/smil+xml',
|
|
'sml': 'application/smil+xml',
|
|
'ttf': 'font/ttf',
|
|
'woff': 'font/woff',
|
|
'woff2': 'font/woff2',
|
|
'xhtml': 'application/xhtml+xml',
|
|
'xpgt': 'application/vnd.adobe-page-template+xml',
|
|
}
|
|
|
|
MIMETYPE_DIRECTORIES = {
|
|
'application/font-sfnt': 'Fonts',
|
|
'application/x-dtbncx+xml': '.',
|
|
'application/x-font-ttf': 'Fonts',
|
|
'application/xhtml+xml': 'Text',
|
|
'audio': 'Audio',
|
|
'font': 'Fonts',
|
|
'image': 'Images',
|
|
'text/css': 'Styles',
|
|
'video': 'Video',
|
|
}
|
|
|
|
MIMETYPE_FILE_TEMPLATE = 'application/epub+zip'
|
|
|
|
CONTAINER_XML_TEMPLATE = '''
|
|
<?xml version="1.0" encoding="UTF-8"?>
|
|
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
|
|
<rootfiles>
|
|
<rootfile full-path="OEBPS/content.opf" media-type="application/oebps-package+xml"/>
|
|
</rootfiles>
|
|
</container>
|
|
'''.strip()
|
|
|
|
OPF_TEMPLATE = '''
|
|
<?xml version="1.0" encoding="utf-8"?>
|
|
<package version="3.0" unique-identifier="BookId" xmlns="http://www.idpf.org/2007/opf">
|
|
<metadata xmlns:dc="http://purl.org/dc/elements/1.1/">
|
|
<dc:identifier id="BookId">{uuid}</dc:identifier>
|
|
</metadata>
|
|
<manifest>
|
|
<item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
|
|
<item id="nav.xhtml" href="Text/nav.xhtml" media-type="application/xhtml+xml" properties="nav"/>
|
|
</manifest>
|
|
<spine toc="ncx">
|
|
<itemref idref="nav.xhtml" linear="no"/>
|
|
</spine>
|
|
</package>
|
|
'''.strip()
|
|
|
|
NCX_TEMPLATE = '''
|
|
<?xml version="1.0" encoding="utf-8"?>
|
|
<ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" version="2005-1">
|
|
<head>
|
|
<meta name="dtb:uid" content="{uuid}" />
|
|
</head>
|
|
<navMap>
|
|
{navpoints}
|
|
</navMap>
|
|
</ncx>
|
|
'''.strip()
|
|
|
|
NAV_XHTML_TEMPLATE = '''
|
|
<?xml version="1.0" encoding="utf-8"?>
|
|
<!DOCTYPE html>
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
|
|
<head>
|
|
<meta charset="utf-8"/>
|
|
</head>
|
|
<body epub:type="frontmatter">
|
|
<nav epub:type="toc" id="toc">
|
|
<h1>Table of Contents</h1>
|
|
{toc_contents}
|
|
</nav>
|
|
</body>
|
|
</html>
|
|
'''.strip()
|
|
|
|
TEXT_TEMPLATE = '''
|
|
<?xml version="1.0" encoding="utf-8"?>
|
|
<!DOCTYPE html>
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
|
|
<head>
|
|
{head_content}
|
|
</head>
|
|
<body>
|
|
{body_content}
|
|
</body>
|
|
</html>
|
|
'''.strip()
|
|
|
|
# EPUB COMPRESSION
|
|
################################################################################
|
|
def compress_epub(directory, epub_filepath):
|
|
directory = pathclass.Path(directory)
|
|
epub_filepath = pathclass.Path(epub_filepath)
|
|
log.debug('Compressing %s to %s.', directory.absolute_path, epub_filepath.absolute_path)
|
|
|
|
if epub_filepath in directory:
|
|
raise ValueError('Epub inside its own directory')
|
|
|
|
if epub_filepath.extension != 'epub':
|
|
epub_filepath = epub_filepath.add_extension('epub')
|
|
|
|
with zipfile.ZipFile(epub_filepath, 'w') as z:
|
|
z.write(directory.with_child('mimetype'), arcname='mimetype')
|
|
for file in directory.walk():
|
|
if file in [directory.with_child('mimetype'), directory.with_child('sigil.cfg')]:
|
|
continue
|
|
z.write(
|
|
file,
|
|
arcname=file.relative_to(directory).replace('\\', '/'),
|
|
compress_type=zipfile.ZIP_DEFLATED,
|
|
)
|
|
return epub_filepath
|
|
|
|
def extract_epub(epub_filepath, directory):
|
|
epub_filepath = pathclass.Path(epub_filepath)
|
|
directory = pathclass.Path(directory)
|
|
log.debug('Extracting %s to %s.', epub_filepath.absolute_path, directory.absolute_path)
|
|
|
|
with zipfile.ZipFile(epub_filepath, 'r') as z:
|
|
z.extractall(directory)
|
|
|
|
# XHTML TOOLS
|
|
################################################################################
|
|
def fix_xhtml(xhtml, return_soup=False):
|
|
if isinstance(xhtml, bs4.BeautifulSoup):
|
|
soup = xhtml
|
|
else:
|
|
# For the text pages, html5lib is the best because html.parser and lxml
|
|
# lowercase all attributes, breaking svg's case-sensitive viewBox etc.
|
|
# and xml loses all of the namespaces when namespaced elements are nested
|
|
# like <html xmlns="..."><svg xmlns:xlink="..."></svg></html>.
|
|
# The downside of html5lib is it turns the xml declaration at the top
|
|
# into a comment which we must undo manually.
|
|
soup = bs4.BeautifulSoup(xhtml, 'html5lib')
|
|
|
|
if not soup.html:
|
|
html = soup.new_tag('html')
|
|
for child in list(soup.contents):
|
|
html.append(child)
|
|
soup.append(html)
|
|
|
|
if not soup.html.body:
|
|
body = soup.new_tag('body')
|
|
for child in list(soup.html.contents):
|
|
body.append(child)
|
|
soup.html.append(body)
|
|
|
|
if not soup.html.get('xmlns'):
|
|
soup.html['xmlns'] = 'http://www.w3.org/1999/xhtml'
|
|
|
|
try:
|
|
doctype = next(i for i in soup.contents if isinstance(i, bs4.Doctype))
|
|
except StopIteration:
|
|
doctype = bs4.Doctype('html')
|
|
soup.html.insert_before(doctype)
|
|
|
|
# html5lib turns the xml declaration into a comment which we must revert.
|
|
try:
|
|
if isinstance(soup.contents[0], bs4.Comment):
|
|
declaration = bs4.Declaration('xml version="1.0" encoding="utf-8"')
|
|
soup.insert(0, declaration)
|
|
declaration.next.extract()
|
|
except StopIteration:
|
|
pass
|
|
|
|
try:
|
|
declaration = next(i for i in soup.contents if isinstance(i, bs4.Declaration))
|
|
except StopIteration:
|
|
declaration = bs4.Declaration('xml version="1.0" encoding="utf-8"')
|
|
doctype.insert_before(declaration)
|
|
|
|
if return_soup:
|
|
return soup
|
|
return str(soup)
|
|
|
|
def xhtml_replacements(xhtml, replacements, return_soup=False):
|
|
if isinstance(xhtml, bs4.BeautifulSoup):
|
|
xhtml = str(xhtml)
|
|
|
|
for (re_from, re_to) in replacements:
|
|
xhtml = re.sub(re_from, re_to, xhtml, flags=re.DOTALL)
|
|
|
|
if return_soup:
|
|
soup = bs4.BeautifulSoup(xhtml, 'html5lib')
|
|
return soup
|
|
|
|
return xhtml
|
|
|
|
def demote_xhtml_headers(xhtml, return_soup=False):
|
|
replacements = [
|
|
(r'<h5([^>]*?>.*?)</h5>', r'<h6\1</h6>'),
|
|
(r'<h4([^>]*?>.*?)</h4>', r'<h5\1</h5>'),
|
|
(r'<h3([^>]*?>.*?)</h3>', r'<h4\1</h4>'),
|
|
(r'<h2([^>]*?>.*?)</h2>', r'<h3\1</h3>'),
|
|
(r'<h1([^>]*?>.*?)</h1>', r'<h2\1</h2>'),
|
|
]
|
|
return xhtml_replacements(xhtml, replacements, return_soup=return_soup)
|
|
|
|
def promote_xhtml_headers(xhtml, return_soup=False):
|
|
replacements = [
|
|
(r'<h2([^>]*?>.*?)</h2>', r'<h1\1</h1>'),
|
|
(r'<h3([^>]*?>.*?)</h3>', r'<h2\1</h2>'),
|
|
(r'<h4([^>]*?>.*?)</h4>', r'<h3\1</h3>'),
|
|
(r'<h5([^>]*?>.*?)</h5>', r'<h4\1</h4>'),
|
|
(r'<h6([^>]*?>.*?)</h6>', r'<h5\1</h5>'),
|
|
]
|
|
return xhtml_replacements(xhtml, replacements, return_soup=return_soup)
|
|
|
|
# MIMETYPE DECISIONMAKERS
|
|
################################################################################
|
|
def get_directory_for_mimetype(mime):
|
|
directory = (
|
|
MIMETYPE_DIRECTORIES.get(mime) or
|
|
MIMETYPE_DIRECTORIES.get(mime.split('/')[0]) or
|
|
'Misc'
|
|
)
|
|
return directory
|
|
|
|
def get_mimetype_for_basename(basename):
|
|
extension = os.path.splitext(basename)[1].strip('.')
|
|
mime = (
|
|
EXTENSION_MIMETYPES.get(extension) or
|
|
mimetypes.guess_type(basename)[0] or
|
|
'application/octet-stream'
|
|
)
|
|
return mime
|
|
|
|
# OPF ELEMENT GENERATORS
|
|
################################################################################
|
|
def make_manifest_item(id, href, mime):
|
|
manifest_item = f'<item id="{id}" href="{href}" media-type="{mime}"/>'
|
|
# 'html.parser' just for having the simplest output.
|
|
manifest_item = bs4.BeautifulSoup(manifest_item, 'html.parser')
|
|
return manifest_item.item
|
|
|
|
def make_meta_item(content=None, attrs=None):
|
|
if content:
|
|
meta_item = f'<meta>{content}</meta>'
|
|
else:
|
|
meta_item = f'<meta/>'
|
|
# 'html.parser' just for having the simplest output.
|
|
meta_item = bs4.BeautifulSoup(meta_item, 'html.parser')
|
|
if attrs:
|
|
meta_item.attrs.update(attrs)
|
|
return meta_item.meta
|
|
|
|
def make_spine_item(id):
|
|
spine_item = f'<itemref idref="{id}"/>'
|
|
# 'html.parser' just for having the simplest output.
|
|
spine_item = bs4.BeautifulSoup(spine_item, 'html.parser')
|
|
return spine_item.itemref
|
|
|
|
# DECORATORS
|
|
################################################################################
|
|
def writes(method):
|
|
'''
|
|
Indicates that the given method performs write operations to files inside
|
|
the book. The decorated method will raise ReadOnly if the book was opened
|
|
in read-only mode.
|
|
'''
|
|
@functools.wraps(method)
|
|
def wrapped_method(self, *args, **kwargs):
|
|
if self.read_only:
|
|
raise ReadOnly(method.__qualname__)
|
|
return method(self, *args, **kwargs)
|
|
return wrapped_method
|
|
|
|
# CLASSES
|
|
################################################################################
|
|
class EpubfileException(Exception):
|
|
error_message = ''
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__()
|
|
self.given_args = args
|
|
self.given_kwargs = kwargs
|
|
self.error_message = self.error_message.format(*args, **kwargs)
|
|
self.args = (self.error_message, args, kwargs)
|
|
|
|
def __str__(self):
|
|
return self.error_message
|
|
|
|
class InvalidEpub(EpubfileException):
|
|
error_message = '{} is invalid: {}'
|
|
|
|
class FileExists(EpubfileException):
|
|
error_message = 'There is already a file at {}.'
|
|
|
|
class IDExists(EpubfileException):
|
|
error_message = 'There is already a file with id {}.'
|
|
|
|
class NotInManifest(EpubfileException):
|
|
error_message = '{} is not in the manifest.'
|
|
|
|
class NotInSpine(EpubfileException):
|
|
error_message = '{} is not in the spine.'
|
|
|
|
class ReadOnly(EpubfileException):
|
|
error_message = 'Can\'t do {} in read-only mode.'
|
|
|
|
class Epub:
|
|
def __init__(self, epub_path, *, read_only=False):
|
|
'''
|
|
epub_path:
|
|
The path to an .epub file, or to a directory that contains unzipped
|
|
epub contents.
|
|
|
|
read_only:
|
|
If True, all write operations will be forbidden. The benefit is that
|
|
the .epub file will not be extracted. This is recommended if you
|
|
only need to read data from a book and don't need to write to it.
|
|
'''
|
|
epub_path = self._keep_tempdir_reference(epub_path)
|
|
epub_path = pathclass.Path(epub_path)
|
|
self.original_path = epub_path
|
|
self.read_only = read_only
|
|
|
|
if epub_path.is_dir:
|
|
self.__init_from_dir(epub_path)
|
|
elif self.read_only:
|
|
self.__init_from_file_read_only(epub_path)
|
|
else:
|
|
self.__init_from_file(epub_path)
|
|
|
|
opfs = self.get_opfs()
|
|
self.opf_filepath = opfs[0]
|
|
self.opf = self.read_opf(self.opf_filepath)
|
|
|
|
def __init_from_dir(self, directory):
|
|
self.is_zip = False
|
|
self.root_directory = pathclass.Path(directory)
|
|
|
|
def __init_from_file_read_only(self, epub_path):
|
|
# It may appear that is_zip is a synonym for read_only, but don't forget
|
|
# that we can also open a directory in readonly mode. It's just that
|
|
# readonly dirs don't need a special init, all they have to do is
|
|
# forbid writes.
|
|
self.is_zip = True
|
|
self.root_directory = pathclass.Path(epub_path)
|
|
self.zip = zipfile.ZipFile(self.root_directory)
|
|
|
|
def __init_from_file(self, epub_path):
|
|
extract_to = tempfile.TemporaryDirectory(prefix='epubfile-')
|
|
extract_epub(epub_path, extract_to.name)
|
|
directory = self._keep_tempdir_reference(extract_to)
|
|
self.__init_from_dir(directory)
|
|
|
|
def __repr__(self):
|
|
if self.read_only:
|
|
return f'Epub({repr(self.root_directory.absolute_path)}, read_only=True)'
|
|
else:
|
|
return f'Epub({repr(self.root_directory.absolute_path)})'
|
|
|
|
def _fopen(self, *args, **kwargs):
|
|
'''
|
|
Not to be confused with the high level `open_file` method, this method
|
|
is the one that actually reads off the disk.
|
|
'''
|
|
if self.is_zip:
|
|
return self._fopen_zip(*args, **kwargs)
|
|
else:
|
|
return self._fopen_disk(*args, **kwargs)
|
|
|
|
def _fopen_disk(self, path, mode, *, encoding=None):
|
|
'''
|
|
If the book was opened as a directory, we can read files off disk with
|
|
Python open.
|
|
'''
|
|
return open(path, mode, encoding=encoding)
|
|
|
|
def _fopen_zip(self, path, mode, *, encoding=None):
|
|
'''
|
|
If the book was opened as a read-only zip, we can read files out of
|
|
the zip.
|
|
'''
|
|
# When reading from a zip, root_directory is the zip file itself.
|
|
# So if the user is trying to read a filepath called
|
|
# D:\book.epub\dir1\file1.html, we need to convert it to the relative
|
|
# path dir1\file1.html
|
|
# But if they have already given us the relative path, we keep that.
|
|
normalized = path
|
|
if not isinstance(normalized, pathclass.Path):
|
|
normalized = pathclass.Path(normalized)
|
|
|
|
if normalized in self.root_directory:
|
|
# The given path was an absolute path including the epub.
|
|
path = normalized.relative_to(self.root_directory, simple=True)
|
|
else:
|
|
# The given path was either a relative path already inside the epub,
|
|
# or an absolute path somewhere totally wrong.
|
|
path = os.fspath(path)
|
|
|
|
# Zip files always use forward slash internally, even on Windows.
|
|
path = path.replace('\\', '/')
|
|
|
|
if mode == 'rb':
|
|
return self.zip.open(path, 'r')
|
|
if mode == 'r':
|
|
return io.TextIOWrapper(self.zip.open(path, 'r'), encoding)
|
|
# At this time fopen_zip is only used for read-only epubs anyway.
|
|
if mode == 'wb':
|
|
return self.zip.open(path, 'w')
|
|
if mode == 'w':
|
|
return io.TextIOWrapper(self.zip.open(path, 'w'), encoding)
|
|
raise ValueError('mode should be r, w, rb, or wb.')
|
|
|
|
def _keep_tempdir_reference(self, p):
|
|
'''
|
|
If the given path object is actually a tempfile.TemporaryDirectory,
|
|
store that TD reference here so that it does not get cleaned up even
|
|
if the caller releases it. Then return the actual filepath.
|
|
'''
|
|
if isinstance(p, tempfile.TemporaryDirectory):
|
|
self._tempdir_reference = p
|
|
p = p.name
|
|
return p
|
|
|
|
def assert_file_not_exists(self, filepath):
|
|
if filepath.exists:
|
|
existing = filepath.relative_to(self.opf_filepath.parent)
|
|
raise FileExists(existing)
|
|
|
|
def assert_id_not_exists(self, id):
|
|
try:
|
|
self.get_manifest_item(id)
|
|
raise IDExists(id)
|
|
except NotInManifest:
|
|
pass
|
|
|
|
# VALIDATION
|
|
############################################################################
|
|
@writes
|
|
def auto_correct_and_validate(self):
|
|
# Ensure we have a mimetype file.
|
|
mimetype_file = self.root_directory.with_child('mimetype')
|
|
if not mimetype_file.exists:
|
|
with self._fopen(mimetype_file, 'w', encoding='utf-8') as handle:
|
|
handle.write(MIMETYPE_FILE_TEMPLATE)
|
|
|
|
# Assert that all manifest items exist on disk.
|
|
for item in self.get_manifest_items(soup=True):
|
|
filepath = self.get_filepath(item['id'])
|
|
if not filepath.exists:
|
|
message = f'Manifest item {item["id"]} = {item["href"]} does not exist.'
|
|
raise InvalidEpub(self.original_path, message)
|
|
|
|
# LOADING AND SAVING
|
|
############################################################################
|
|
@classmethod
|
|
def new(cls):
|
|
'''
|
|
Create a new book. It will start as a temporary directory, so don't
|
|
forget to call `save` when you are done.
|
|
'''
|
|
def writefile(filepath, content):
|
|
filepath.parent.makedirs(exist_ok=True)
|
|
# This line uses Python open instead of self._fopen because the epub
|
|
# hasn't been instantiated yet! At this time, creating a book with
|
|
# Epub.new always creates it as a directory. We do not support
|
|
# creating a book directly into a fresh zip file.
|
|
with filepath.open('w', encoding='utf-8') as handle:
|
|
handle.write(content)
|
|
|
|
uid = uuid.uuid4().urn
|
|
|
|
tempdir = tempfile.TemporaryDirectory(prefix='epubfile-')
|
|
root = pathclass.Path(tempdir.name)
|
|
writefile(root.join('mimetype'), MIMETYPE_FILE_TEMPLATE)
|
|
writefile(root.join('META-INF/container.xml'), CONTAINER_XML_TEMPLATE)
|
|
writefile(root.join('OEBPS/content.opf'), OPF_TEMPLATE.format(uuid=uid))
|
|
writefile(root.join('OEBPS/toc.ncx'), NCX_TEMPLATE.format(uuid=uid, navpoints=''))
|
|
writefile(root.join('OEBPS/Text/nav.xhtml'), NAV_XHTML_TEMPLATE.format(toc_contents=''))
|
|
|
|
return cls(tempdir)
|
|
|
|
@writes
|
|
def save(self, epub_filepath):
|
|
self.write_opf()
|
|
self.auto_correct_and_validate()
|
|
compress_epub(self.root_directory, epub_filepath)
|
|
|
|
# CONTAINER & OPF
|
|
############################################################################
|
|
def get_opfs(self):
|
|
'''
|
|
Read the container.xml to find all available OPFs (aka rootfiles).
|
|
'''
|
|
container = self.read_container_xml()
|
|
rootfiles = container.find_all('rootfile')
|
|
rootfiles = [x.get('full-path') for x in rootfiles]
|
|
rootfiles = [self.root_directory.join(x) for x in rootfiles]
|
|
return rootfiles
|
|
|
|
def read_container_xml(self):
|
|
container_xml_path = self.root_directory.join('META-INF/container.xml')
|
|
container = self._fopen(container_xml_path, 'r', encoding='utf-8')
|
|
# 'xml' and 'html.parser' seem about even here except that html.parser
|
|
# doesn't self-close.
|
|
container = bs4.BeautifulSoup(container, 'xml')
|
|
return container
|
|
|
|
def read_opf(self, rootfile):
|
|
rootfile = pathclass.Path(rootfile)
|
|
rootfile_xml = self._fopen(rootfile, 'r', encoding='utf-8').read()
|
|
# 'html.parser' preserves namespacing the best, but unfortunately it
|
|
# botches the <meta> items because it wants them to be self-closing
|
|
# and the string contents come out. We will fix in just a moment.
|
|
# This is still preferable to 'xml' which handles the dc: prefixes when
|
|
# parsing only the metadata block, but loses all namespaces when parsing
|
|
# the whole doc. 'lxml' wraps the content in <html><body> and also
|
|
# botches the metas so it's not any better than html.parser.
|
|
opf = bs4.BeautifulSoup(rootfile_xml, 'html.parser')
|
|
|
|
# Let's fix those metas.
|
|
metas = opf.select('meta')
|
|
for meta in metas:
|
|
neighbor = meta.next
|
|
if neighbor.parent != meta.parent:
|
|
# This happens on the last meta, neighbor is outside of the manifest
|
|
break
|
|
if not isinstance(neighbor, bs4.element.NavigableString):
|
|
continue
|
|
meta.append(neighbor.extract().strip())
|
|
|
|
return opf
|
|
|
|
@writes
|
|
def write_container_xml(self, container):
|
|
if isinstance(container, bs4.BeautifulSoup):
|
|
container = str(container)
|
|
container_xml_path = self.root_directory.join('META-INF/container.xml')
|
|
container_xml = self._fopen(container_xml_path, 'w', encoding='utf-8')
|
|
container_xml.write(container)
|
|
|
|
@writes
|
|
def write_opf(self):
|
|
with self._fopen(self.opf_filepath, 'w', encoding='utf-8') as rootfile:
|
|
rootfile.write(str(self.opf))
|
|
|
|
# FILE OPERATIONS
|
|
############################################################################
|
|
@writes
|
|
def add_file(self, id, basename, content):
|
|
self.assert_id_not_exists(id)
|
|
|
|
basename = os.path.basename(basename)
|
|
mime = get_mimetype_for_basename(basename)
|
|
directory = get_directory_for_mimetype(mime)
|
|
directory = self.opf_filepath.parent.with_child(directory)
|
|
directory.makedirs(exist_ok=True)
|
|
filepath = directory.with_child(basename)
|
|
|
|
self.assert_file_not_exists(filepath)
|
|
|
|
if mime == 'application/xhtml+xml':
|
|
# bs4 converts bytes to str so this must come before the handle choice.
|
|
content = fix_xhtml(content)
|
|
|
|
if isinstance(content, str):
|
|
handle = self._fopen(filepath, 'w', encoding='utf-8')
|
|
elif isinstance(content, bytes):
|
|
handle = self._fopen(filepath, 'wb')
|
|
else:
|
|
raise TypeError(f'content should be str or bytes, not {type(content)}.')
|
|
|
|
with handle:
|
|
handle.write(content)
|
|
|
|
href = filepath.relative_to(self.opf_filepath.parent, simple=True).replace('\\', '/')
|
|
href = urllib.parse.quote(href)
|
|
|
|
manifest_item = make_manifest_item(id, href, mime)
|
|
self.opf.manifest.append(manifest_item)
|
|
|
|
if mime == 'application/xhtml+xml':
|
|
spine_item = make_spine_item(id)
|
|
self.opf.spine.append(spine_item)
|
|
|
|
return id
|
|
|
|
@writes
|
|
def easy_add_file(self, filepath):
|
|
'''
|
|
Add a file from disk into the book. The manifest ID and href will be
|
|
automatically generated.
|
|
'''
|
|
filepath = pathclass.Path(filepath)
|
|
with self._fopen(filepath, 'rb') as handle:
|
|
return self.add_file(
|
|
id=filepath.basename,
|
|
basename=filepath.basename,
|
|
content=handle.read(),
|
|
)
|
|
|
|
@writes
|
|
def delete_file(self, id):
|
|
manifest_item = self.get_manifest_item(id)
|
|
filepath = self.get_filepath(id)
|
|
|
|
manifest_item.extract()
|
|
spine_item = self.opf.spine.find('itemref', {'idref': id})
|
|
if spine_item:
|
|
spine_item.extract()
|
|
os.remove(filepath)
|
|
|
|
def get_filepath(self, id):
|
|
href = self.get_manifest_item(id)['href']
|
|
filepath = self.opf_filepath.parent.join(href)
|
|
# TODO: In the case of a read-only zipped epub, this condition will
|
|
# definitely fail and we won't be unquoting names that need it.
|
|
# Double-check the consequences of this and make a patch for file
|
|
# exists inside zip check if needed.
|
|
if not filepath.exists:
|
|
href = urllib.parse.unquote(href)
|
|
filepath = self.opf_filepath.parent.join(href)
|
|
return filepath
|
|
|
|
def open_file(self, id, mode):
|
|
if mode not in ('r', 'w'):
|
|
raise ValueError(f'mode should be either r or w, not {mode}.')
|
|
|
|
if mode == 'w' and self.read_only:
|
|
raise ReadOnly(self.open_file.__qualname__)
|
|
|
|
filepath = self.get_filepath(id)
|
|
mime = self.get_manifest_item(id)['media-type']
|
|
is_text = (
|
|
mime in ('application/xhtml+xml', 'application/x-dtbncx+xml') or
|
|
mime.startswith('text/')
|
|
)
|
|
|
|
if is_text:
|
|
handle = self._fopen(filepath, mode, encoding='utf-8')
|
|
else:
|
|
handle = self._fopen(filepath, mode + 'b')
|
|
|
|
return handle
|
|
|
|
def read_file(self, id, *, soup=False):
|
|
# text vs binary handled by open_file.
|
|
content = self.open_file(id, 'r').read()
|
|
mediatype = self.get_manifest_item(id)['media-type']
|
|
if soup and mediatype == 'application/xhtml+xml':
|
|
return fix_xhtml(content, return_soup=True)
|
|
if soup and mediatype == 'application/x-dtbncx+xml':
|
|
# xml because we have to preserve the casing on navMap.
|
|
return bs4.BeautifulSoup(content, 'xml')
|
|
return content
|
|
|
|
@writes
|
|
def rename_file(self, id, new_basename=None, *, fix_interlinking=True):
|
|
if isinstance(id, dict):
|
|
basename_map = id
|
|
else:
|
|
if new_basename is None:
|
|
raise TypeError('new_basename can be omitted if id is a dict.')
|
|
basename_map = {id: new_basename}
|
|
|
|
rename_map = {}
|
|
for (id, new_basename) in basename_map.items():
|
|
old_filepath = self.get_filepath(id)
|
|
new_filepath = old_filepath.parent.with_child(new_basename)
|
|
if not new_filepath.extension:
|
|
new_filepath = new_filepath.add_extension(old_filepath.extension)
|
|
self.assert_file_not_exists(new_filepath)
|
|
os.rename(old_filepath, new_filepath)
|
|
rename_map[old_filepath] = new_filepath
|
|
|
|
if fix_interlinking:
|
|
self.fix_interlinking(rename_map)
|
|
else:
|
|
self.fix_interlinking_opf(rename_map)
|
|
|
|
return rename_map
|
|
|
|
@writes
|
|
def write_file(self, id, content):
|
|
# text vs binary handled by open_file.
|
|
if isinstance(content, bs4.BeautifulSoup):
|
|
content = str(content)
|
|
|
|
with self.open_file(id, 'w') as handle:
|
|
handle.write(content)
|
|
|
|
# GETTING THINGS
|
|
############################################################################
|
|
def get_manifest_items(self, filter='', soup=False, spine_order=False):
|
|
query = f'item{filter}'
|
|
items = self.opf.manifest.select(query)
|
|
|
|
if spine_order:
|
|
items = {x['id']: x for x in items}
|
|
ordered_items = []
|
|
|
|
for spine_id in self.get_spine_order():
|
|
ordered_items.append(items.pop(spine_id))
|
|
ordered_items.extend(items.values())
|
|
items = ordered_items
|
|
|
|
if soup:
|
|
return items
|
|
|
|
return [x['id'] for x in items]
|
|
|
|
def get_manifest_item(self, id):
|
|
item = self.opf.manifest.find('item', {'id': id})
|
|
if not item:
|
|
raise NotInManifest(id)
|
|
return item
|
|
|
|
def get_fonts(self, *, soup=False):
|
|
return self.get_manifest_items(
|
|
filter='[media-type*="font"],[media-type*="opentype"]',
|
|
soup=soup,
|
|
)
|
|
|
|
def get_images(self, *, soup=False):
|
|
return self.get_manifest_items(
|
|
filter='[media-type^="image/"]',
|
|
soup=soup,
|
|
)
|
|
|
|
def get_media(self, *, soup=False):
|
|
return self.get_manifest_items(
|
|
filter='[media-type^="video/"],[media-type^="audio/"]',
|
|
soup=soup,
|
|
)
|
|
|
|
def get_nav(self, *, soup=False):
|
|
nav = self.opf.manifest.find('item', {'properties': 'nav'})
|
|
if not nav:
|
|
return None
|
|
if soup:
|
|
return nav
|
|
return nav['id']
|
|
|
|
def get_ncx(self, *, soup=False):
|
|
ncx = self.opf.manifest.find('item', {'media-type': 'application/x-dtbncx+xml'})
|
|
if not ncx:
|
|
return None
|
|
if soup:
|
|
return ncx
|
|
return ncx['id']
|
|
|
|
def get_styles(self, *, soup=False):
|
|
return self.get_manifest_items(
|
|
filter='[media-type="text/css"]',
|
|
soup=soup,
|
|
)
|
|
|
|
def get_texts(self, *, soup=False, skip_nav=False):
|
|
texts = self.get_manifest_items(
|
|
filter='[media-type="application/xhtml+xml"]',
|
|
soup=True,
|
|
spine_order=True,
|
|
)
|
|
if skip_nav:
|
|
texts = [x for x in texts if x.get('properties') != 'nav']
|
|
|
|
if soup:
|
|
return texts
|
|
return [x['id'] for x in texts]
|
|
|
|
# COVER
|
|
############################################################################
|
|
def get_cover_image(self, *, soup=False):
|
|
cover = self.opf.manifest.find('item', {'properties': 'cover-image'})
|
|
if cover:
|
|
return cover if soup else cover['id']
|
|
|
|
cover = self.opf.metadata.find('meta', {'name': 'cover'})
|
|
if cover:
|
|
return cover if soup else cover['content']
|
|
|
|
return None
|
|
|
|
@writes
|
|
def remove_cover_image(self):
|
|
current_cover = self.get_cover_image(soup=True)
|
|
if not current_cover:
|
|
return
|
|
|
|
del current_cover['properties']
|
|
|
|
meta = self.opf.metadata.find('meta', {'name': 'cover'})
|
|
if meta:
|
|
meta.extract()
|
|
|
|
@writes
|
|
def set_cover_image(self, id):
|
|
if id is None:
|
|
self.remove_cover_image()
|
|
|
|
current_cover = self.get_cover_image(soup=True)
|
|
|
|
if not current_cover:
|
|
pass
|
|
elif current_cover['id'] == id:
|
|
return
|
|
else:
|
|
del current_cover['properties']
|
|
|
|
manifest_item = self.get_manifest_item(id)
|
|
manifest_item['properties'] = 'cover-image'
|
|
|
|
current_meta = self.opf.metadata.find('meta', {'name': 'cover'})
|
|
if current_meta:
|
|
current_meta['content'] = id
|
|
else:
|
|
meta = make_meta_item(attrs={'name': 'cover', 'content': id})
|
|
self.opf.metadata.append(meta)
|
|
|
|
# SPINE
|
|
############################################################################
|
|
def get_spine_order(self, *, linear_only=False):
|
|
items = self.opf.spine.find_all('itemref')
|
|
if linear_only:
|
|
items = [x for x in items if x.get('linear') != 'no']
|
|
return [x['idref'] for x in items]
|
|
|
|
@writes
|
|
def set_spine_order(self, ids):
|
|
manifest_ids = self.get_manifest_items()
|
|
# Fetch the existing entries so that we can preserve their attributes
|
|
# while rearranging, only creating new spine entries for ids that aren't
|
|
# already present.
|
|
spine_items = self.opf.spine.select('itemref')
|
|
spine_items = {item['idref']: item for item in spine_items}
|
|
for id in ids:
|
|
if id not in manifest_ids:
|
|
raise NotInManifest(id)
|
|
if id in spine_items:
|
|
self.opf.spine.append(spine_items.pop(id))
|
|
else:
|
|
self.opf.spine.append(make_spine_item(id))
|
|
|
|
# The remainder of the current spine items were not used, so pop them out.
|
|
for spine_item in spine_items.values():
|
|
spine_item.extract()
|
|
|
|
def get_spine_linear(self, id):
|
|
spine_item = self.opf.spine.find('itemref', {'idref': id})
|
|
if not spine_item:
|
|
raise NotInSpine(id)
|
|
linear = spine_item.get('linear')
|
|
linear = {None: None, 'yes': True, 'no': False}.get(linear, linear)
|
|
return linear
|
|
|
|
@writes
|
|
def set_spine_linear(self, id, linear):
|
|
'''
|
|
Set linear to yes or no. Or pass None to remove the property.
|
|
'''
|
|
spine_item = self.opf.spine.find('itemref', {'idref': id})
|
|
if not spine_item:
|
|
raise NotInSpine(id)
|
|
|
|
if linear is None:
|
|
del spine_item['linear']
|
|
return
|
|
|
|
if isinstance(linear, str):
|
|
if linear not in ('yes', 'no'):
|
|
raise ValueError(f'Linear must be yes or no, not {linear}.')
|
|
elif isinstance(linear, (bool, int)):
|
|
linear = {True: 'yes', False: 'no'}[bool(linear)]
|
|
else:
|
|
raise TypeError(linear)
|
|
|
|
spine_item['linear'] = linear
|
|
|
|
# METADATA
|
|
############################################################################
|
|
def get_authors(self):
|
|
'''
|
|
Thank you double_j for showing how to deal with find_all not working
|
|
on namespaced tags.
|
|
https://stackoverflow.com/a/44681560
|
|
'''
|
|
creators = self.opf.metadata.find_all({'dc:creator'})
|
|
creators = [str(c.contents[0]) for c in creators if len(c.contents) == 1]
|
|
return creators
|
|
|
|
def get_dates(self):
|
|
dates = self.opf.metadata.find_all({'dc:date'})
|
|
dates = [str(t.contents[0]) for t in dates if len(t.contents) == 1]
|
|
return dates
|
|
|
|
def get_languages(self):
|
|
languages = self.opf.metadata.find_all({'dc:language'})
|
|
languages = [str(l.contents[0]) for l in languages if len(l.contents) == 1]
|
|
return languages
|
|
|
|
def get_titles(self):
|
|
titles = self.opf.metadata.find_all({'dc:title'})
|
|
titles = [str(t.contents[0]) for t in titles if len(t.contents) == 1]
|
|
return titles
|
|
|
|
@writes
|
|
def remove_metadata_of_type(self, tag_name):
|
|
for meta in self.opf.metadata.find_all({tag_name}):
|
|
if meta.get('id'):
|
|
for refines in self.opf.metadata.find_all('meta', {'refines': f'#{meta["id"]}'}):
|
|
refines.extract()
|
|
meta.extract()
|
|
|
|
@writes
|
|
def set_languages(self, languages):
|
|
'''
|
|
A list like ['en', 'fr', 'ko'].
|
|
'''
|
|
self.remove_metadata_of_type('dc:language')
|
|
for language in languages:
|
|
element = f'<dc:language>{language}</dc:language>'
|
|
element = bs4.BeautifulSoup(element, 'html.parser')
|
|
self.opf.metadata.append(element)
|
|
|
|
# UTILITIES
|
|
############################################################################
|
|
@writes
|
|
def fix_all_xhtml(self):
|
|
for id in self.get_texts():
|
|
self.write_file(id, self.read_file(id, soup=True))
|
|
|
|
@staticmethod
|
|
def _fix_interlinking_helper(link, rename_map, relative_to, old_relative_to=None):
|
|
'''
|
|
Given an old link that was found in one of the documents, and the
|
|
rename_map, produce a new link that points to the new location.
|
|
|
|
relative_to controls the relative pathing for the new link.
|
|
For example, the links inside a text document usually need to step from
|
|
Text/ to ../Images/ to link an image. But the links inside the OPF file
|
|
start with Images/ right away.
|
|
|
|
old_relative_to is needed when, for example, all of the files were in a
|
|
single directory together, and now we are splitting them into Text/,
|
|
Images/, etc. In this case, recognizing the old link requires that we
|
|
understand the old relative location, then we can correct it using the
|
|
new relative location.
|
|
'''
|
|
if link is None:
|
|
return None
|
|
|
|
link = urllib.parse.urlsplit(link)
|
|
if link.scheme:
|
|
return None
|
|
|
|
if old_relative_to is None:
|
|
old_relative_to = relative_to
|
|
|
|
new_filepath = (
|
|
rename_map.get(link.path) or
|
|
rename_map.get(old_relative_to.join(link.path)) or
|
|
rename_map.get(old_relative_to.join(urllib.parse.unquote(link.path))) or
|
|
None
|
|
)
|
|
if new_filepath is None:
|
|
return None
|
|
|
|
link = link._replace(path=new_filepath.relative_to(relative_to, simple=True).replace('\\', '/'))
|
|
link = link._replace(path=urllib.parse.quote(link.path))
|
|
|
|
return link.geturl()
|
|
|
|
@staticmethod
|
|
def _fix_interlinking_css_helper(tag):
|
|
'''
|
|
Given a <style> tag or a tag with a style="" attribute, fix interlinking
|
|
for things like `background-image: url("");`.
|
|
'''
|
|
links = []
|
|
commit = lambda: None
|
|
|
|
if not isinstance(tag, bs4.element.Tag):
|
|
pass
|
|
|
|
elif tag.name == 'style' and tag.contents:
|
|
style = tinycss2.parse_stylesheet(tag.contents[0])
|
|
links = [
|
|
token
|
|
for rule in style if isinstance(rule, tinycss2.ast.QualifiedRule)
|
|
for token in rule.content if isinstance(token, tinycss2.ast.URLToken)
|
|
]
|
|
commit = lambda: tag.contents[0].replace_with(tinycss2.serialize(style))
|
|
|
|
elif tag.get('style'):
|
|
style = tinycss2.parse_declaration_list(tag['style'])
|
|
links = [
|
|
token
|
|
for declaration in style if isinstance(declaration, tinycss2.ast.Declaration)
|
|
for token in declaration.value if isinstance(token, tinycss2.ast.URLToken)
|
|
]
|
|
commit = lambda: tag.attrs.update(style=tinycss2.serialize(style))
|
|
|
|
return (links, commit)
|
|
|
|
@writes
|
|
def fix_interlinking_text(self, id, rename_map, old_relative_to=None):
|
|
if not rename_map:
|
|
return
|
|
text_parent = self.get_filepath(id).parent
|
|
soup = self.read_file(id, soup=True)
|
|
for tag in soup.descendants:
|
|
for link_property in HTML_LINK_PROPERTIES.get(tag.name, []):
|
|
link = tag.get(link_property)
|
|
link = self._fix_interlinking_helper(link, rename_map, text_parent, old_relative_to)
|
|
if not link:
|
|
continue
|
|
tag[link_property] = link
|
|
|
|
(style_links, style_commit) = self._fix_interlinking_css_helper(tag)
|
|
for token in style_links:
|
|
link = token.value
|
|
link = self._fix_interlinking_helper(link, rename_map, text_parent, old_relative_to)
|
|
if not link:
|
|
continue
|
|
token.value = link
|
|
style_commit()
|
|
|
|
text = str(soup)
|
|
self.write_file(id, text)
|
|
|
|
@writes
|
|
def fix_interlinking_ncx(self, rename_map, old_relative_to=None):
|
|
if not rename_map:
|
|
return
|
|
ncx_id = self.get_ncx()
|
|
if not ncx_id:
|
|
return
|
|
|
|
ncx_parent = self.get_filepath(ncx_id).parent
|
|
ncx = self.read_file(ncx_id)
|
|
# 'xml' because 'lxml' and 'html.parser' lowercase the navPoint tag name.
|
|
ncx = bs4.BeautifulSoup(ncx, 'xml')
|
|
for point in ncx.select('navPoint > content[src]'):
|
|
link = point['src']
|
|
link = self._fix_interlinking_helper(link, rename_map, ncx_parent, old_relative_to)
|
|
if not link:
|
|
continue
|
|
point['src'] = link
|
|
|
|
ncx = str(ncx)
|
|
self.write_file(ncx_id, ncx)
|
|
|
|
@writes
|
|
def fix_interlinking_opf(self, rename_map):
|
|
if not rename_map:
|
|
return
|
|
opf_parent = self.opf_filepath.parent
|
|
for opf_item in self.opf.select('guide > reference[href], manifest > item[href]'):
|
|
link = opf_item['href']
|
|
link = self._fix_interlinking_helper(link, rename_map, opf_parent)
|
|
if not link:
|
|
continue
|
|
opf_item['href'] = link
|
|
|
|
@writes
|
|
def fix_interlinking(self, rename_map):
|
|
if not rename_map:
|
|
return
|
|
self.fix_interlinking_opf(rename_map)
|
|
for id in self.get_texts():
|
|
self.fix_interlinking_text(id, rename_map)
|
|
self.fix_interlinking_ncx(rename_map)
|
|
|
|
def _set_nav_toc(self, nav_id, new_toc):
|
|
'''
|
|
Write the table of contents created by `generate_toc` to the nav file.
|
|
'''
|
|
for li in new_toc.find_all('li'):
|
|
href = li['nav_anchor']
|
|
atag = new_toc.new_tag('a')
|
|
atag.append(li['text'])
|
|
atag['href'] = href
|
|
li.insert(0, atag)
|
|
del li['nav_anchor']
|
|
del li['ncx_anchor']
|
|
del li['text']
|
|
soup = self.read_file(nav_id, soup=True)
|
|
toc = soup.find('nav', {'epub:type': 'toc'})
|
|
if not toc:
|
|
toc = soup.new_tag('nav')
|
|
toc['epub:type'] = 'toc'
|
|
soup.body.insert(0, toc)
|
|
if toc.ol:
|
|
toc.ol.extract()
|
|
toc.append(new_toc.ol)
|
|
self.write_file(nav_id, soup)
|
|
|
|
def _set_ncx_toc(self, ncx_id, new_toc):
|
|
'''
|
|
Write the table of contents created by `generate_toc` to the ncx file.
|
|
'''
|
|
play_order = 1
|
|
def li_to_navpoint(li):
|
|
# result:
|
|
# <navPoint id="navPoint{X}" playOrder="{X}">
|
|
# <navLabel>
|
|
# <text>{text}</text>
|
|
# </navLabel>
|
|
# <content src="{ncx_anchor}" />
|
|
# {children}
|
|
# </navPoint>
|
|
nonlocal play_order
|
|
navpoint = new_toc.new_tag('navPoint', id=f'navPoint{play_order}', playOrder=play_order)
|
|
play_order += 1
|
|
label = new_toc.new_tag('navLabel')
|
|
text = new_toc.new_tag('text')
|
|
text.append(li['text'])
|
|
label.append(text)
|
|
navpoint.append(label)
|
|
|
|
content = new_toc.new_tag('content', src=li['ncx_anchor'])
|
|
navpoint.append(content)
|
|
|
|
children = li.ol.children if li.ol else []
|
|
children = [li_to_navpoint(li) for li in children]
|
|
for child in children:
|
|
navpoint.append(child)
|
|
return navpoint
|
|
|
|
soup = self.read_file(ncx_id, soup=True)
|
|
navmap = soup.navMap
|
|
for child in list(navmap.children):
|
|
child.extract()
|
|
for li in list(new_toc.ol.children):
|
|
navpoint = li_to_navpoint(li)
|
|
li.insert_before(navpoint)
|
|
li.extract()
|
|
for navpoint in list(new_toc.ol.children):
|
|
navmap.append(navpoint)
|
|
self.write_file(ncx_id, soup)
|
|
|
|
@writes
|
|
def generate_toc(self, max_level=None, linear_only=True):
|
|
'''
|
|
Generate the table of contents (toc.nav and nav.xhtml) by collecting
|
|
<h1>..<h6> throughout all of the text documents.
|
|
|
|
max_level: If provided, only collect the headers from h1..hX, inclusive.
|
|
|
|
linear_only: Ignore spine items that are marked as linear=no.
|
|
'''
|
|
def new_list(root=False):
|
|
r = bs4.BeautifulSoup('<ol></ol>', 'html.parser')
|
|
if root:
|
|
return r
|
|
return r.ol
|
|
|
|
# Official HTML headers only go up to 6.
|
|
if max_level is None:
|
|
max_level = 6
|
|
|
|
elif max_level < 1:
|
|
raise ValueError('max_level must be >= 1.')
|
|
|
|
header_pattern = re.compile(rf'^h[1-{max_level}]$')
|
|
|
|
nav_id = self.get_nav()
|
|
if nav_id:
|
|
nav_filepath = self.get_filepath(nav_id)
|
|
|
|
ncx_id = self.get_ncx()
|
|
if ncx_id:
|
|
ncx_filepath = self.get_filepath(ncx_id)
|
|
|
|
if not nav_id and not ncx_id:
|
|
return
|
|
|
|
# Note: The toc generated by the upcoming loop is in a sort of agnostic
|
|
# format, since it needs to be converted into nav.html and toc.ncx which
|
|
# have different structural requirements. The attributes that I'm using
|
|
# in this initial toc object DO NOT represent any part of the epub format.
|
|
toc = new_list(root=True)
|
|
|
|
current_list = toc.ol
|
|
current_list['level'] = None
|
|
|
|
spine = self.get_spine_order(linear_only=linear_only)
|
|
spine = [s for s in spine if s != nav_id]
|
|
|
|
for file_id in spine:
|
|
file_path = self.get_filepath(file_id)
|
|
soup = self.read_file(file_id, soup=True)
|
|
|
|
headers = soup.find_all(header_pattern)
|
|
for (toc_line_index, header) in enumerate(headers, start=1):
|
|
# 'hX' -> X
|
|
level = int(header.name[1])
|
|
|
|
header['id'] = f'toc_{toc_line_index}'
|
|
|
|
toc_line = toc.new_tag('li')
|
|
toc_line['text'] = header.text
|
|
|
|
# In Lithium, the TOC drawer only remembers your position if
|
|
# the page that you're reading corresponds to a TOC entry
|
|
# exactly. Which is to say, if you left off on page5.html,
|
|
# there needs to be a TOC line with href="page5.html" or else
|
|
# the TOC drawer will be in the default position at the top of
|
|
# the list and not highlight the current chapter. Any #anchor
|
|
# in the href will break this feature. So, this code will make
|
|
# the first <hX> on a given page not have an #anchor. If you
|
|
# have a significant amount of text on the page before this
|
|
# header, then this will look bad. But for the majority of
|
|
# cases I expect the first header on the page will be at the
|
|
# very top, or near enough that the Lithium fix is still
|
|
# worthwhile.
|
|
if toc_line_index == 1:
|
|
hash_anchor = ''
|
|
else:
|
|
hash_anchor = f'#{header["id"]}'
|
|
|
|
if nav_id:
|
|
relative = file_path.relative_to(nav_filepath.parent, simple=True).replace('\\', '/')
|
|
toc_line['nav_anchor'] = f'{relative}{hash_anchor}'
|
|
if ncx_id:
|
|
relative = file_path.relative_to(ncx_filepath.parent, simple=True).replace('\\', '/')
|
|
toc_line['ncx_anchor'] = f'{relative}{hash_anchor}'
|
|
|
|
if current_list['level'] is None:
|
|
current_list['level'] = level
|
|
|
|
while level < current_list['level']:
|
|
# Because the sub-<ol> are actually a child of the last
|
|
# <li> of the previous <ol>, we must .parent twice.
|
|
# The second .parent is conditional because if the current
|
|
# list is toc.ol, then parent is a Soup document object, and
|
|
# parenting again would be a mistake. We'll recover from
|
|
# this in just a moment.
|
|
current_list = current_list.parent
|
|
if current_list.name == 'li':
|
|
current_list = current_list.parent
|
|
# If the file has headers in a non-ascending order, like the
|
|
# first header is an h4 and then an h1 comes later, then
|
|
# this while loop would keep attempting to climb the .parent
|
|
# which would take us too far, off the top of the tree.
|
|
# So, if we reach `current_list == toc.ol` then we've
|
|
# reached the root and should stop climbing. At that point
|
|
# we can just snap current_level and use the root list again.
|
|
# In the resulting toc, that initial h4 would have the same
|
|
# toc depth as the later h1 since it never had parents.
|
|
if current_list == toc:
|
|
current_list['level'] = level
|
|
current_list = toc.ol
|
|
|
|
if level > current_list['level']:
|
|
# In order to properly render nested <ol>, you're supposed
|
|
# to make the new <ol> a child of the last <li> of the
|
|
# previous <ol>. NOT a child of the prev <ol> directly.
|
|
# Don't worry, .children can never be empty because on the
|
|
# first <li> this condition can never occur, and new <ol>s
|
|
# always receive a child right after being created.
|
|
_l = new_list()
|
|
_l['level'] = level
|
|
final_li = list(current_list.children)[-1]
|
|
final_li.append(_l)
|
|
current_list = _l
|
|
|
|
current_list.append(toc_line)
|
|
|
|
# We have to save the id="toc_X" that we gave to all the headers.
|
|
self.write_file(file_id, soup)
|
|
|
|
for ol in toc.find_all('ol'):
|
|
del ol['level']
|
|
|
|
if nav_id:
|
|
self._set_nav_toc(nav_id, copy.copy(toc))
|
|
|
|
if ncx_id:
|
|
self._set_ncx_toc(ncx_id, copy.copy(toc))
|
|
|
|
@writes
|
|
def move_nav_to_end(self):
|
|
'''
|
|
Move the nav.xhtml file to the end and set its linear=no.
|
|
'''
|
|
nav = self.get_nav()
|
|
if not nav:
|
|
return
|
|
|
|
spine = self.get_spine_order()
|
|
|
|
try:
|
|
index = spine.index(nav)
|
|
spine.append(spine.pop(index))
|
|
except ValueError:
|
|
spine.append(nav)
|
|
|
|
self.set_spine_order(spine)
|
|
self.set_spine_linear(nav, False)
|
|
|
|
@writes
|
|
def normalize_directory_structure(self):
|
|
# This must come before the opf rewrite because that would affect the
|
|
# location of all all manifest item hrefs.
|
|
manifest_items = self.get_manifest_items(soup=True)
|
|
old_filepaths = {item['id']: self.get_filepath(item['id']) for item in manifest_items}
|
|
|
|
try:
|
|
old_ncx_parent = self.get_filepath(self.get_ncx()).parent
|
|
except Exception:
|
|
old_ncx_parent = None
|
|
|
|
if self.opf_filepath.parent == self.root_directory:
|
|
oebps = self.root_directory.with_child('OEBPS')
|
|
oebps.makedirs(exist_ok=True)
|
|
self.write_opf()
|
|
new_opf_path = oebps.with_child(self.opf_filepath.basename)
|
|
os.rename(self.opf_filepath, new_opf_path)
|
|
container = self.read_container_xml()
|
|
rootfile = container.find('rootfile', {'full-path': self.opf_filepath.basename})
|
|
rootfile['full-path'] = new_opf_path.relative_to(self.root_directory, simple=True).replace('\\', '/')
|
|
self.write_container_xml(container)
|
|
self.opf_filepath = new_opf_path
|
|
|
|
rename_map = {}
|
|
for manifest_item in manifest_items:
|
|
old_filepath = old_filepaths[manifest_item['id']]
|
|
|
|
directory = get_directory_for_mimetype(manifest_item['media-type'])
|
|
directory = self.opf_filepath.parent.with_child(directory)
|
|
if directory.exists:
|
|
# On Windows, this will fix any incorrect casing.
|
|
# On Linux it is inert.
|
|
os.rename(directory, directory)
|
|
else:
|
|
directory.makedirs()
|
|
|
|
new_filepath = directory.with_child(old_filepath.basename)
|
|
if new_filepath.absolute_path != old_filepath.absolute_path:
|
|
rename_map[old_filepath] = new_filepath
|
|
os.rename(old_filepath, new_filepath)
|
|
manifest_item['href'] = new_filepath.relative_to(self.opf_filepath.parent, simple=True).replace('\\', '/')
|
|
|
|
self.fix_interlinking_opf(rename_map)
|
|
for id in self.get_texts():
|
|
self.fix_interlinking_text(id, rename_map, old_relative_to=old_filepaths[id].parent)
|
|
self.fix_interlinking_ncx(rename_map, old_relative_to=old_ncx_parent)
|
|
|
|
@writes
|
|
def normalize_opf(self):
|
|
for tag in self.opf.descendants:
|
|
if tag.name:
|
|
tag.name = tag.name.replace('opf:', '')
|
|
for item in self.get_manifest_items(soup=True):
|
|
if item['href'] in ['toc.ncx', 'Misc/toc.ncx']:
|
|
item['media-type'] = 'application/x-dtbncx+xml'
|
|
|
|
# COMMAND LINE TOOLS
|
|
################################################################################
|
|
|
|
def random_string(length, characters=string.ascii_lowercase):
|
|
return ''.join(random.choices(characters, k=length))
|
|
|
|
def addfile_argparse(args):
|
|
book = Epub(args.epub)
|
|
|
|
for pattern in args.files:
|
|
for file in pathclass.glob_files(pattern):
|
|
log.info('Adding file %s.', file.absolute_path)
|
|
try:
|
|
book.easy_add_file(file)
|
|
except (IDExists, FileExists) as exc:
|
|
rand_suffix = random_string(3, string.digits)
|
|
base = file.replace_extension('').basename
|
|
id = f'{base}_{rand_suffix}'
|
|
basename = f'{base}_{rand_suffix}{file.extension.with_dot}'
|
|
content = file.open('rb').read()
|
|
book.add_file(id, basename, content)
|
|
|
|
book.move_nav_to_end()
|
|
book.save(args.epub)
|
|
return 0
|
|
|
|
def covercomesfirst(book):
|
|
basenames = {i: book.get_filepath(i).basename for i in book.get_images()}
|
|
if len(basenames) <= 1:
|
|
return
|
|
|
|
cover_image = book.get_cover_image()
|
|
if not cover_image:
|
|
return
|
|
|
|
cover_basename = book.get_filepath(cover_image).basename
|
|
|
|
cover_index = sorted(basenames.values()).index(cover_basename)
|
|
if cover_index == 0:
|
|
return
|
|
|
|
rename_map = basenames.copy()
|
|
|
|
if not cover_basename.startswith('!'):
|
|
cover_basename = '!' + cover_basename
|
|
rename_map[cover_image] = cover_basename
|
|
else:
|
|
rename_map.pop(cover_image)
|
|
|
|
for (id, basename) in rename_map.copy().items():
|
|
if id == cover_image:
|
|
continue
|
|
if basename > cover_basename:
|
|
rename_map.pop(id)
|
|
continue
|
|
if basename < cover_basename and basename.startswith('!'):
|
|
basename = basename.lstrip('!')
|
|
rename_map[id] = basename
|
|
if basename < cover_basename or basename.startswith('.'):
|
|
basename = '_' + basename
|
|
rename_map[id] = basename
|
|
|
|
book.rename_file(rename_map)
|
|
|
|
def covercomesfirst_argparse(args):
|
|
epubs = pathclass.glob_many(args.epubs)
|
|
for epub in epubs:
|
|
book = Epub(epub)
|
|
log.info('Moving %s\'s cover.', book)
|
|
covercomesfirst(book)
|
|
book.save(epub)
|
|
pipeable.stdout(epub.absolute_path)
|
|
return 0
|
|
|
|
def exec_argparse(args):
|
|
epubs = pathclass.glob_many(args.epubs)
|
|
for epub in epubs:
|
|
book = Epub(epub)
|
|
exec(args.command)
|
|
book.save(epub)
|
|
pipeable.stdout(epub.absolute_path)
|
|
return 0
|
|
|
|
def generate_toc_argparse(args):
|
|
epubs = pathclass.glob_many(args.epubs)
|
|
books = []
|
|
for epub in epubs:
|
|
book = Epub(epub)
|
|
book.generate_toc(max_level=args.max_level)
|
|
book.save(epub)
|
|
return 0
|
|
|
|
def holdit_argparse(args):
|
|
epubs = pathclass.glob_many(args.epubs)
|
|
books = []
|
|
for epub in epubs:
|
|
book = Epub(epub)
|
|
pipeable.stderr(f'{epub} = {book.root_directory.absolute_path}')
|
|
books.append((epub, book))
|
|
|
|
input('Press Enter when ready.')
|
|
for (epub, book) in books:
|
|
# Saving re-writes the opf from memory, which might undo any manual changes.
|
|
# So let's re-read it first.
|
|
book.read_opf(book.opf_filepath)
|
|
book.save(epub)
|
|
pipeable.stdout(epub.absolute_path)
|
|
return 0
|
|
|
|
def merge(
|
|
input_filepaths,
|
|
demote_headers=False,
|
|
do_headerfile=False,
|
|
number_headerfile=False,
|
|
):
|
|
book = Epub.new()
|
|
|
|
input_filepaths = list(pathclass.glob_many(input_filepaths))
|
|
index_length = len(str(len(input_filepaths)))
|
|
rand_prefix = random_string(3, string.digits)
|
|
|
|
# Number books from 1 for human sanity.
|
|
for (index, input_filepath) in enumerate(input_filepaths, start=1):
|
|
log.info('Merging %s.', input_filepath.absolute_path)
|
|
prefix = f'{rand_prefix}_{index:>0{index_length}}_{{}}'
|
|
input_book = Epub(input_filepath)
|
|
input_book.normalize_directory_structure()
|
|
|
|
input_ncx = input_book.get_ncx()
|
|
input_nav = input_book.get_nav()
|
|
manifest_ids = input_book.get_manifest_items(spine_order=True)
|
|
manifest_ids = [x for x in manifest_ids if x not in (input_ncx, input_nav)]
|
|
|
|
basename_map = {}
|
|
for id in manifest_ids:
|
|
old_basename = input_book.get_filepath(id).basename
|
|
new_basename = prefix.format(old_basename)
|
|
basename_map[id] = new_basename
|
|
|
|
# Don't worry, we're not going to save over the input book!
|
|
input_book.rename_file(basename_map)
|
|
|
|
if do_headerfile:
|
|
content = ''
|
|
try:
|
|
title = input_book.get_titles()[0]
|
|
except IndexError:
|
|
title = input_filepath.replace_extension('').basename
|
|
|
|
try:
|
|
year = input_book.get_dates()[0]
|
|
except IndexError:
|
|
pass
|
|
else:
|
|
title = f'{title} ({year})'
|
|
|
|
if number_headerfile:
|
|
title = f'{index:>0{index_length}}. {title}'
|
|
|
|
content += f'<h1>{html.escape(title)}</h1>'
|
|
|
|
try:
|
|
author = input_book.get_authors()[0]
|
|
content += f'<p>{html.escape(author)}</p>'
|
|
except IndexError:
|
|
pass
|
|
|
|
headerfile_id = prefix.format('headerfile')
|
|
headerfile_basename = prefix.format('headerfile.html')
|
|
book.add_file(headerfile_id, headerfile_basename, content)
|
|
|
|
for id in manifest_ids:
|
|
new_id = prefix.format(id)
|
|
new_basename = basename_map[id]
|
|
if demote_headers:
|
|
content = input_book.read_file(id, soup=True)
|
|
if isinstance(content, bs4.BeautifulSoup):
|
|
content = demote_xhtml_headers(content)
|
|
else:
|
|
content = input_book.read_file(id)
|
|
book.add_file(new_id, new_basename, content)
|
|
|
|
book.move_nav_to_end()
|
|
return book
|
|
|
|
def merge_argparse(args):
|
|
output = pathclass.Path(args.output)
|
|
|
|
if output.exists:
|
|
if not (args.autoyes or interactive.getpermission(f'Overwrite {args.output}?')):
|
|
raise ValueError(f'{args.output} exists.')
|
|
|
|
book = merge(
|
|
input_filepaths=args.epubs,
|
|
demote_headers=args.demote_headers,
|
|
do_headerfile=args.headerfile,
|
|
number_headerfile=args.number_headerfile,
|
|
)
|
|
book.save(output)
|
|
pipeable.stdout(output.absolute_path)
|
|
return 0
|
|
|
|
def new_book_argparse(args):
|
|
output = pathclass.Path(args.epub)
|
|
if output.exists:
|
|
if not (args.autoyes or interactive.getpermission(f'Overwrite {args.epub}?')):
|
|
raise ValueError(f'{output.absolute_path} exists.')
|
|
book = Epub.new()
|
|
book.save(output)
|
|
pipeable.stdout(output.absolute_path)
|
|
return 0
|
|
|
|
def normalize_argparse(args):
|
|
epubs = pathclass.glob_many(args.epubs)
|
|
for epub in epubs:
|
|
log.info('Normalizing %s.', epub.absolute_path)
|
|
book = Epub(epub)
|
|
book.normalize_opf()
|
|
book.normalize_directory_structure()
|
|
book.move_nav_to_end()
|
|
book.save(epub)
|
|
pipeable.stdout(epub.absolute_path)
|
|
return 0
|
|
|
|
def setfont(book, new_font, autoyes=False):
|
|
css_id = 'epubfile_setfont'
|
|
css_basename = 'epubfile_setfont.css'
|
|
|
|
new_font = pathclass.Path(new_font)
|
|
new_font.assert_is_file()
|
|
|
|
try:
|
|
book.assert_id_not_exists(css_id)
|
|
except IDExists:
|
|
if not (autoyes or interactive.getpermission(f'Overwrite {css_id}?')):
|
|
return
|
|
book.delete_file(css_id)
|
|
|
|
for existing_font in book.get_fonts():
|
|
font_path = book.get_filepath(existing_font)
|
|
if font_path.basename == new_font.basename:
|
|
font_id = existing_font
|
|
break
|
|
else:
|
|
font_id = book.easy_add_file(new_font)
|
|
font_path = book.get_filepath(font_id)
|
|
|
|
# The font_path may have come from an existing font in the book, so we have
|
|
# no guarantees about its path layout. The css file, however, is definitely
|
|
# going to be inside OEBPS/Styles since we're the ones creating it.
|
|
# So, we should be getting the correct number of .. in the relative path.
|
|
family = font_path.replace_extension('').basename
|
|
relative = font_path.relative_to(book.opf_filepath.parent.with_child('Styles')).replace('\\', '/')
|
|
|
|
css = f'''
|
|
@font-face {{
|
|
font-family: "{family}";
|
|
font-weight: normal;
|
|
font-style: normal;
|
|
src: url("{relative}");
|
|
}}
|
|
|
|
* {{
|
|
font-family: "{family}" !important;
|
|
}}
|
|
'''
|
|
|
|
book.add_file(
|
|
id=css_id,
|
|
basename=css_basename,
|
|
content=css,
|
|
)
|
|
css_path = book.get_filepath(css_id)
|
|
|
|
for text_id in book.get_texts():
|
|
text_path = book.get_filepath(text_id)
|
|
soup = book.read_file(text_id, soup=True)
|
|
head = soup.head
|
|
if head.find('link', {'id': css_id}):
|
|
continue
|
|
link = soup.new_tag('link')
|
|
link['id'] = css_id
|
|
link['href'] = css_path.relative_to(text_path.parent).replace('\\', '/')
|
|
link['rel'] = 'stylesheet'
|
|
link['type'] = 'text/css'
|
|
head.append(link)
|
|
book.write_file(text_id, soup)
|
|
|
|
def setfont_argparse(args):
|
|
epubs = pathclass.glob_many(args.epubs)
|
|
for epub in epubs:
|
|
book = Epub(epub)
|
|
setfont(book, args.font, autoyes=args.autoyes)
|
|
book.save(epub)
|
|
pipeable.stdout(epub.absolute_path)
|
|
return 0
|
|
|
|
@vlogging.main_decorator
|
|
def main(argv):
|
|
parser = argparse.ArgumentParser(
|
|
description='''
|
|
A simple Python .epub scripting tool.
|
|
''',
|
|
)
|
|
subparsers = parser.add_subparsers()
|
|
|
|
################################################################################################
|
|
|
|
p_addfile = subparsers.add_parser(
|
|
'addfile',
|
|
description='''
|
|
Add files into the book.
|
|
''',
|
|
)
|
|
p_addfile.add_argument(
|
|
'epub',
|
|
)
|
|
p_addfile.add_argument(
|
|
'files',
|
|
nargs='+',
|
|
)
|
|
p_addfile.set_defaults(func=addfile_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_covercomesfirst = subparsers.add_parser(
|
|
'covercomesfirst',
|
|
description='''
|
|
Rename the cover image file so that it is the alphabetically-first image.
|
|
|
|
I use CBXShell to get thumbnails of epub files on Windows, and because it
|
|
is generalized for zip files and doesn't read epub metadata, alphabetized
|
|
mode works best for getting epub covers as icons.
|
|
|
|
In my testing, CBXShell considers the image's whole path and not just the
|
|
basename, so you may want to consider normalizing the directory structure
|
|
first, otherwise some /a/image.jpg will always be before /images/cover.jpg.
|
|
''',
|
|
)
|
|
p_covercomesfirst.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_covercomesfirst.set_defaults(func=covercomesfirst_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_exec = subparsers.add_parser(
|
|
'exec',
|
|
description='''
|
|
Execute a snippet of Python code against the book. The book will be saved
|
|
again after the command has finished.
|
|
''',
|
|
)
|
|
p_exec.examples = [
|
|
['mybook.epub', '--command', 'print(book.get_authors())'],
|
|
['*.epub', '--command', 'book.remove_cover_image()'],
|
|
]
|
|
p_exec.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_exec.add_argument(
|
|
'--command',
|
|
default=None,
|
|
required=True,
|
|
help='''
|
|
The variable `book` will be the Epub object.
|
|
''',
|
|
)
|
|
p_exec.set_defaults(func=exec_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_generate_toc = subparsers.add_parser(
|
|
'generate_toc',
|
|
description='''
|
|
Regenerate the toc.ncx and nav.xhtml based on html <hX> headers in the text.
|
|
''',
|
|
)
|
|
p_generate_toc.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_generate_toc.add_argument(
|
|
'--max_level',
|
|
'--max-level',
|
|
type=int,
|
|
default=None,
|
|
help='''
|
|
Only generate toc entries for headers up to level X.
|
|
That is, h1, h2, ... hX.
|
|
''',
|
|
)
|
|
p_generate_toc.set_defaults(func=generate_toc_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_holdit = subparsers.add_parser(
|
|
'holdit',
|
|
description='''
|
|
Extract the book so that you can manually edit the files on disk, then
|
|
compress them back into the original file.
|
|
|
|
This is helpful when you want to do some file processing that is outside of
|
|
epubfile's scope. epubfile will save you the effort of extracting and
|
|
compressing the epub so you can focus on doing the file operations.
|
|
''',
|
|
)
|
|
p_holdit.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_holdit.set_defaults(func=holdit_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_merge = subparsers.add_parser(
|
|
'merge',
|
|
description='''
|
|
Merge multiple books into one.
|
|
''',
|
|
)
|
|
p_merge.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_merge.add_argument(
|
|
'--output',
|
|
required=True,
|
|
)
|
|
p_merge.add_argument(
|
|
'--headerfile',
|
|
action='store_true',
|
|
help='''
|
|
Add a file before each book with an <h1> containing its title.
|
|
''',
|
|
)
|
|
p_merge.add_argument(
|
|
'--demote_headers',
|
|
'--demote-headers',
|
|
action='store_true',
|
|
help='''
|
|
All h1 in the book will be demoted to h2, and so forth, so that the
|
|
headerfiles are the only h1s and the table of contents will generate
|
|
with a good hierarchy.
|
|
''',
|
|
)
|
|
p_merge.add_argument(
|
|
'--number_headerfile',
|
|
'--number-headerfile',
|
|
action='store_true',
|
|
help='''
|
|
In the headerfile, the <h1> will start with the book's index, like
|
|
"01. First Book"
|
|
''',
|
|
)
|
|
p_merge.add_argument(
|
|
'-y',
|
|
'--yes',
|
|
'--autoyes',
|
|
dest='autoyes',
|
|
action='store_true',
|
|
help='''
|
|
Overwrite the output file without prompting.
|
|
''',
|
|
)
|
|
p_merge.set_defaults(func=merge_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_new = subparsers.add_parser(
|
|
'new',
|
|
description='''
|
|
Create a new, blank epub file.
|
|
''',
|
|
)
|
|
p_new.add_argument(
|
|
'epub',
|
|
)
|
|
p_new.add_argument(
|
|
'-y',
|
|
'--yes',
|
|
'--autoyes',
|
|
dest='autoyes',
|
|
action='store_true',
|
|
help='''
|
|
Overwrite the file without prompting.
|
|
''',
|
|
)
|
|
p_new.set_defaults(func=new_book_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_normalize = subparsers.add_parser(
|
|
'normalize',
|
|
description='''
|
|
Rename files and directories in the book to match a common structure.
|
|
|
|
Moves all book content from / into /OEBPS and sorts files into
|
|
subdirectories by type: Text, Images, Styles, etc.
|
|
''',
|
|
)
|
|
p_normalize.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_normalize.set_defaults(func=normalize_argparse)
|
|
|
|
################################################################################################
|
|
|
|
p_setfont = subparsers.add_parser(
|
|
'setfont',
|
|
description='''
|
|
Set the font for every page in the whole book.
|
|
|
|
A stylesheet called epubfile_setfont.css will be created that sets
|
|
* { font-family: ... !important } with a font file of your choice.
|
|
''',
|
|
)
|
|
p_setfont.add_argument(
|
|
'epubs',
|
|
nargs='+',
|
|
)
|
|
p_setfont.add_argument(
|
|
'--font',
|
|
required=True,
|
|
)
|
|
p_setfont.add_argument(
|
|
'--yes',
|
|
dest='autoyes',
|
|
action='store_true',
|
|
help='''
|
|
Overwrite the epubfile_setfont.css without prompting.
|
|
''',
|
|
)
|
|
p_setfont.set_defaults(func=setfont_argparse)
|
|
|
|
return betterhelp.go(parser, argv)
|
|
|
|
if __name__ == '__main__':
|
|
raise SystemExit(main(sys.argv[1:]))
|