Mercurial > dive4elements > river
view flys-artifacts/contrib/add-i18n-numbers.py @ 4421:0b0f415203f0
Add new Filter class to change caching
Add new Filter class to avoid caching of GWT nocache files in browsers and http
proxies. The new Filter class NoCacheFilter sets http headers to stop the
proxies and browesers from storing the nocache files.
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Tue, 06 Nov 2012 13:32:06 +0100 |
parents | 003940a7d6c9 |
children |
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#!/usr/bin/env python """ Add unique numbers in front of properties values to identfy the key without knowing the real key. """ import sys import re import os BLACK_LISTED_KEYS = [ re.compile(r".*\.file$") ] BLACK_LISTED_VALUES = [ re.compile(r"^http.*$") ] NUMBERED = re.compile(r"^\s*([^\s]+)\s*=\s*\[([0-9a-zA-Z]+)\]\s*(.+)$") UNUMBERED = re.compile(r"^\s*([^\s]+)\s*=\s*(.+)$") ALPHA = "0123456789" \ "abcdefghijklmnopqrstuvwxyz" \ "ABCDEFGHIJKLMNOPQRSTUVWXYZ" def decode_ibase62(s): t, c = 0, 1 for x in s[::-1]: i = ALPHA.find(x) t += i*c c *= len(ALPHA) return t def ibase62(i): if i == 0: return "0" out = [] if i < 0: out.append("-") i = -1 while i > 0: out.append(ALPHA[i % len(ALPHA)]) i //= len(ALPHA) out.reverse() return ''.join(out) def is_blacklisted(key, value): for bl in BLACK_LISTED_KEYS: if bl.match(key): return True for bl in BLACK_LISTED_VALUES: if bl.match(value): return True return False def find_key(already_numbered, value): for k, v in already_numbered.iteritems(): if v == value: return k return None def decorated_content(infile, outfile, already_numbered): for line in infile: line = line.strip() m = NUMBERED.match(line) if m: key, num, value = m.groups() decoded_num = decode_ibase62(num) last = find_key(already_numbered, decoded_num) if last is None: already_numbered[key] = decoded_num elif last != key: print >> sys.stderr, "WARN: Number clash: " \ "%s leeds to '%s' and '%s'" % (num, key, last) print >> outfile, line continue m = UNUMBERED.match(line) if m: key, value = m.groups(1) if is_blacklisted(key, value): print >> outfile, line else: num = already_numbered.setdefault(key, len(already_numbered)) print >> outfile, "%s=[%s] %s" % (key, ibase62(num), m.group(2)) continue print >> outfile, line def tmp_fname(fname): name = fname + ".tmp" i = 0 while os.path.exists(name): name = "%s.tmp%d" % (fname, i) i += 1 return name def decorate_file(fname, already_numbered): tmp = tmp_fname(fname) with open(fname, "r") as infile: with open(tmp, "w") as outfile: decorated_content(infile, outfile, already_numbered) os.rename(tmp, fname) def main(): already_numbered = {} for fname in sys.argv[1:]: print >> sys.stderr, "checking %s" % fname decorate_file(fname, already_numbered) if __name__ == "__main__": main()