Merge tag 'upstream/2017.03.07'

[youtubedl] / devscripts / prepare_manpage.py

diff --git a/devscripts/prepare_manpage.py b/devscripts/prepare_manpage.py
index 7ece37754d1003ba4cbe63fed109eef00711adcd..f9fe63f1ffd5073b312f22e8f08fb7798fa3f7a4 100644 (file)
--- a/devscripts/prepare_manpage.py
+++ b/devscripts/prepare_manpage.py
@@ -1,16 +1,13 @@
 from __future__ import unicode_literals
 
 import io
+import optparse
 import os.path
-import sys
 import re
 
 ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 README_FILE = os.path.join(ROOT_DIR, 'README.md')
 
-with io.open(README_FILE, encoding='utf-8') as f:
-    readme = f.read()
-
 PREFIX = '''%YOUTUBE-DL(1)
 
 # NAME
@@ -22,11 +19,61 @@ youtube\-dl \- download videos from youtube.com or other video platforms
 **youtube-dl** \[OPTIONS\] URL [URL...]
 
 '''
-readme = re.sub(r'(?s)^.*?(?=# DESCRIPTION)', '', readme)
-readme = re.sub(r'\s+youtube-dl \[OPTIONS\] URL \[URL\.\.\.\]', '', readme)
-readme = PREFIX + readme
-
-if sys.version_info < (3, 0):
-    print(readme.encode('utf-8'))
-else:
-    print(readme)
+
+
+def main():
+    parser = optparse.OptionParser(usage='%prog OUTFILE.md')
+    options, args = parser.parse_args()
+    if len(args) != 1:
+        parser.error('Expected an output filename')
+
+    outfile, = args
+
+    with io.open(README_FILE, encoding='utf-8') as f:
+        readme = f.read()
+
+    readme = re.sub(r'(?s)^.*?(?=# DESCRIPTION)', '', readme)
+    readme = re.sub(r'\s+youtube-dl \[OPTIONS\] URL \[URL\.\.\.\]', '', readme)
+    readme = PREFIX + readme
+
+    readme = filter_options(readme)
+
+    with io.open(outfile, 'w', encoding='utf-8') as outf:
+        outf.write(readme)
+
+
+def filter_options(readme):
+    ret = ''
+    in_options = False
+    for line in readme.split('\n'):
+        if line.startswith('# '):
+            if line[2:].startswith('OPTIONS'):
+                in_options = True
+            else:
+                in_options = False
+
+        if in_options:
+            if line.lstrip().startswith('-'):
+                split = re.split(r'\s{2,}', line.lstrip())
+                # Description string may start with `-` as well. If there is
+                # only one piece then it's a description bit not an option.
+                if len(split) > 1:
+                    option, description = split
+                    split_option = option.split(' ')
+
+                    if not split_option[-1].startswith('-'):  # metavar
+                        option = ' '.join(split_option[:-1] + ['*%s*' % split_option[-1]])
+
+                    # Pandoc's definition_lists. See http://pandoc.org/README.html
+                    # for more information.
+                    ret += '\n%s\n:   %s\n' % (option, description)
+                    continue
+            ret += line.lstrip() + '\n'
+        else:
+            ret += line + '\n'
+
+    return ret
+
+
+if __name__ == '__main__':
+    main()