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#!/usr/bin/env python
import os, sys
def parse_translation(f):
"""Read a single translation entry from the file F and return a
tuple with the comments, msgid and msgstr. The comments is returned
as a list of lines which do not end in new-lines. The msgid and
msgstr are strings, possibly with embedded newlines"""
line = f.readline()
# Parse comments
comments = []
while 1:
if line.strip() == '':
return comments, None, None
elif line[0] == '#':
comments.append(line[:-1])
else:
break
line = f.readline()
# Parse msgid
if line[:7] != 'msgid "' or line[-2] != '"':
raise RuntimeError("parse error")
msgid = line[6:-1]
while 1:
line = f.readline()
if line[0] != '"':
break
msgid += '\n' + line[:-1]
# Parse msgstr
if line[:8] != 'msgstr "' or line[-2] != '"':
raise RuntimeError("parse error")
msgstr = line[7:-1]
while 1:
line = f.readline()
if len(line) == 0 or line[0] != '"':
break
msgstr += '\n' + line[:-1]
if line.strip() != '':
raise RuntimeError("parse error")
return comments, msgid, msgstr
def split_comments(comments):
"""Split COMMENTS into flag comments and other comments. Flag
comments are those that begin with '#,', e.g. '#,fuzzy'."""
flags = []
other = []
for c in comments:
if len(c) > 1 and c[1] == ',':
flags.append(c)
else:
other.append(c)
return flags, other
def main(argv):
if len(argv) != 2:
argv0 = os.path.basename(argv[0])
sys.exit('Usage: %s <lang.po>\n'
'\n'
'This script will replace the translations and flags in lang.po with\n'
'with the translations and flags in the source po file read from standard\n'
'input. Strings that are not found in the source file are left untouched.\n'
'A backup copy of lang.po is saved as lang.po.bak.\n'
'\n'
'Example:\n'
' svn cat http://svn.collab.net/repos/svn/trunk/subversion/po/sv.po | \\\n'
' %s sv.po' % (argv0, argv0))
# Read the source po file into a hash
source = {}
while 1:
comments, msgid, msgstr = parse_translation(sys.stdin)
if not comments and msgid is None:
break
if msgid is not None:
source[msgid] = msgstr, split_comments(comments)[0]
# Make a backup of the output file, open the copy for reading
# and the original for writing.
os.rename(argv[1], argv[1] + '.bak')
infile = open(argv[1] + '.bak')
outfile = open(argv[1], 'w')
# Loop thought the original and replace stuff as we go
first = 1
string_count = 0
update_count = 0
untranslated = 0
while 1:
comments, msgid, msgstr = parse_translation(infile)
if not comments and msgid is None:
break
if not first:
outfile.write('\n')
first = 0
if msgid is None:
outfile.write('\n'.join(comments) + '\n')
else:
string_count += 1
# Do not update the header, and only update if the source
# has a non-empty translation.
if msgid != '""' and source.get(msgid, ['""', []])[0] != '""':
other = split_comments(comments)[1]
new_msgstr, new_flags = source[msgid]
new_comments = other + new_flags
if new_msgstr != msgstr or new_comments != comments:
update_count += 1
msgstr = new_msgstr
comments = new_comments
outfile.write('\n'.join(comments) + '\n')
outfile.write('msgid ' + msgid + '\n')
outfile.write('msgstr ' + msgstr + '\n')
if msgstr == '""':
untranslated += 1
# We're done. Tell the user what we did.
print('%d strings updated. '
'%d of %d strings are still untranslated (%.0f%%).' %
(update_count, untranslated, string_count,
100.0 * untranslated / string_count))
if __name__ == '__main__':
main(sys.argv)
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