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#!/usr/bin/python
import sys
import re
import datetime
from optparse import OptionParser
class Info(object):
def __init__(self, name, description=None, synopsis=None, copyright=None, options=None):
self.name = name
self.description = description
self.synopsis = synopsis
self.copyright = copyright
self.options = options # list of dictionaries with keys ["long_name", "short_name", "description", "arg_description"]
def gen_rst(self):
rst = ".. -*- coding: utf-8 -*-\n\n"
rst += "%s\n" % ("=" * len(self.name),)
rst += "%s\n" % self.name
rst += "%s\n\n" % ("=" * len(self.name),)
# Add synopsis
#if self.synopsis:
# rst += ":Synopsis: %s\n\n" % self.synopsis
# Add description
if self.description:
rst += ":Subtitle: %s\n\n" % self.description
# Add copyright
if self.copyright:
rst += ":Copyright: %s\n" % self.copyright
# Add date
rst += ":Date: $Date: %s $\n\n" % datetime.datetime.strftime(datetime.datetime.utcnow(), format="%F %X")
# Add options
rst += "-------\n"
rst += "OPTIONS\n"
rst += "-------\n"
for command in self.options:
cmd = ""
if command["short_name"]:
cmd += "-%s " % command["short_name"]
cmd += "--%s" % command["long_name"]
if command["arg_description"]:
cmd += " %s" % command["arg_description"]
rst += "%s\n" % cmd
rst += "%s\n" % ("-" * len(cmd))
rst += "%s\n" % command["description"]
rst += "\n"
return rst
def parse_arguments_from_c_file(filename):
args = []
try:
content = open(filename, "r").read()
except IOError:
print "Error: Cannot open file %s" % filename
return args
re_cmd_entries = re.compile(r"static[ ]+GOptionEntry[^{]*{(?P<entries>.*)\s*NULL\s*}\s*};", re.MULTILINE|re.DOTALL)
match = re_cmd_entries.search(content)
if not match:
print "Warning: Cannot find GOptionEntry section in %s" % filename
return args
re_single_entry = re.compile(r"""{\s*"(?P<long_name>[^"]*)"\s*, # long name
\s*'?(?P<short_name>[^',]*)'?\s*, # short name
\s*[^,]*\s*, # flags
\s*[^,]*\s*, # arg type
\s*[^,]*\s*, # arg data pointer
\s*("(?P<description>.*?)")\s*, # description
\s*"?(?P<arg_description>[^"}]*)"? # arg description
\s*},""", re.MULTILINE|re.DOTALL|re.VERBOSE)
raw_entries_str = match.group("entries")
start = 0
entry_match = re_single_entry.search(raw_entries_str)
i = 1
while entry_match:
long_name = entry_match.group("long_name").strip()
short_name = entry_match.group("short_name").strip()
description = entry_match.group("description").strip()
arg_description = entry_match.group("arg_description").strip()
# Normalize short name
if short_name and (short_name == "NULL" or short_name == "0"):
short_name = None
# Normalize description
description = description.replace('\\"', "\\\\'")
description = description.replace("\\\\'", '"')
description = description.replace('"', "")
description = description.replace('\n', '')
description = description.replace('\t', '')
# Remove multiple whitespaces from description
while True:
new_description = description.replace(" ", " ")
if new_description == description:
break
description = new_description
description = description.strip()
# Normalize arg_description
if arg_description and (arg_description == "NULL" or arg_description == "0"):
arg_description = None
# Store option into list
args.append({'long_name': long_name,
'short_name': short_name,
'description': description,
'arg_description': arg_description
})
# Continue to next option
i += 1
start += entry_match.end(0)
entry_match = re_single_entry.search(raw_entries_str[start:])
# End while
print >> sys.stderr, "Loaded %2d arguments" % (i,)
return args
if __name__ == "__main__":
parser = OptionParser('usage: %prog [options] <filename> [--mergerepo]')
parser.add_option('-m', '--mergerepo', action="store_true", help="Gen rst for mergerepo")
options, args = parser.parse_args()
if len(args) < 1:
print >> sys.stderr, "Error: Must specify a input filename. (Example: ../src/cmd_parser.c)"
sys.exit(1)
args = parse_arguments_from_c_file(args[0])
if not options.mergerepo:
NAME = "createrepo_c"
info = Info(NAME,
description="C implementation of createrepo",
synopsis="%s [options] <directory>" % (NAME,),
options=args)
else:
NAME = "mergerepo_c"
info = Info(NAME,
description="C implementation of mergerepo",
synopsis="%s [options] <directory>" % (NAME,),
options=args)
ret = info.gen_rst()
if not ret:
print >> sys.stderr, "Error: Rst has not been generated"
sys.exit(1)
print ret
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