[downloadable] fix filename HTTP header for simple name with space (closes #2535715)
Since d74addac92bb, we export simple ascii filename without any encoding in the
`filename` parameter of the `Content-Disposition` header. If this name contains
space this will fails, the parameter value will be truncated at the space
position. (eg. `filename=jungle babar.txt` read as `jungle`)
We need to quote the filename to prevent this (eg. `filename="jungle babar.txt"`).
Then literal quote and backslash needs to be escaped too.
The new escaping is correct according this extensive test case data base:
http://greenbytes.de/tech/tc2231/
#!/usr/bin/python
"""usage: fix-po-encodings [filename...]
change the encoding of the po files passed as arguments to utf-8
"""
import sys
import re
import codecs
def change_encoding(filename, target='UTF-8'):
fdesc = open(filename)
data = fdesc.read()
fdesc.close()
encoding = find_encoding(data)
if encoding == target:
return
data = fix_encoding(data, target)
data = unicode(data, encoding)
fdesc = codecs.open(filename, 'wb', encoding=target)
fdesc.write(data)
fdesc.close()
def find_encoding(data):
regexp = re.compile(r'"Content-Type:.* charset=([a-zA-Z0-9-]+)\\n"', re.M)
mo = regexp.search(data)
if mo is None:
raise ValueError('No encoding declaration')
return mo.group(1)
def fix_encoding(data, target_encoding):
regexp = re.compile(r'("Content-Type:.* charset=)(.*)(\\n")', re.M)
return regexp.sub(r'\1%s\3' % target_encoding, data)
for filename in sys.argv[1:]:
print filename
change_encoding(filename)