Upgrade contentreplace to use real argparse.

Toolbox/contentreplace.py

@@ -1,34 +1,22 @@
-import glob
+import argparse
 import codecs
+import glob
 import sys
-filenames = glob.glob(sys.argv[1])
-replace_from = sys.argv[2]
-replace_to = sys.argv[3]
-try:
-    automatic = sys.argv[4] == '-y'
-except IndexError:
-    automatic = False
 
-replace_from = codecs.decode(replace_from, 'unicode_escape')
-replace_to = codecs.decode(replace_to, 'unicode_escape')
-
-def contentreplace(filename):
+def contentreplace(filename, replace_from, replace_to, autoyes=False):
     f = open(filename, 'r', encoding='utf-8')
     with f:
         content = f.read()
 
     occurances = content.count(replace_from)
+
+    print(f'{filename}: Found {occurances} occurences.')
     if occurances == 0:
-        print('No occurences')
         return
 
-    print('Found %d occurences.' % occurances)
-    if automatic:
-        permission = 'y'
-    else:
-        permission = input('Replace? ')
-    if permission.lower() not in ['y', 'yes']:
-        exit()
+    permission = autoyes or (input('Replace? ').lower() in ('y', 'yes'))
+    if not permission:
+        return
 
     content = content.replace(replace_from, replace_to)
 
@@ -36,5 +24,27 @@ def contentreplace(filename):
     with f:
         f.write(content)
 
-for filename in filenames:
-    contentreplace(filename)
+def contentreplace_argparse(args):
+    filenames = glob.glob(args.filename_glob)
+    for filename in filenames:
+        contentreplace(
+            filename,
+            codecs.decode(args.replace_from, 'unicode_escape'),
+            codecs.decode(args.replace_to, 'unicode_escape'),
+            autoyes=args.autoyes,
+        )
+
+def main(argv):
+    parser = argparse.ArgumentParser(description=__doc__)
+
+    parser.add_argument('filename_glob')
+    parser.add_argument('replace_from')
+    parser.add_argument('replace_to')
+    parser.add_argument('-y', '--yes', dest='autoyes', action='store_true', help='accept results without confirming')
+    parser.set_defaults(func=contentreplace_argparse)
+
+    args = parser.parse_args(argv)
+    args.func(args)
+
+if __name__ == '__main__':
+    raise SystemExit(main(sys.argv[1:]))