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diff mercurial/templatefilters.py @ 11297:d320e70442a5

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replace Python standard textwrap by MBCS sensitive one for i18n text Mercurial has problem around text wrapping/filling in MBCS encoding environment, because standard 'textwrap' module of Python can not treat it correctly. It splits byte sequence for one character into two lines. According to unicode specification, "east asian width" classifies characters into: W(ide), N(arrow), F(ull-width), H(alf-width), A(mbiguous) W/N/F/H can be always recognized as 2/1/2/1 bytes in byte sequence, but 'A' can not. Size of 'A' depends on language in which it is used. Unicode specification says: If the context(= language) cannot be established reliably they should be treated as narrow characters by default but many of class 'A' characters are full-width, at least, in Japanese environment. So, this patch treats class 'A' characters as full-width always for safety wrapping. This patch focuses only on MBCS safe-ness, not on writing/printing rule strict wrapping for each languages MBCS sensitive textwrap class is originally implemented by ITO Nobuaki <daydream.trippers@gmail.com>.
author FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
date Sun, 06 Jun 2010 17:20:10 +0900
parents 5974123d0339
children aff419e260f9
line wrap: on
line diff
--- a/mercurial/templatefilters.py	Thu Jun 03 10:37:31 2010 +0100
+++ b/mercurial/templatefilters.py	Sun Jun 06 17:20:10 2010 +0900
@@ -5,7 +5,7 @@
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
-import cgi, re, os, time, urllib, textwrap
+import cgi, re, os, time, urllib
 import util, encoding
 
 def stringify(thing):
@@ -61,15 +61,17 @@
         while True:
             m = para_re.search(text, start)
             if not m:
-                w = len(text)
-                while w > start and text[w - 1].isspace():
+                uctext = unicode(text[start:], encoding.encoding)
+                w = len(uctext)
+                while 0 < w and uctext[w - 1].isspace():
                     w -= 1
-                yield text[start:w], text[w:]
+                yield (uctext[:w].encode(encoding.encoding),
+                       uctext[w:].encode(encoding.encoding))
                 break
             yield text[start:m.start(0)], m.group(1)
             start = m.end(1)
 
-    return "".join([space_re.sub(' ', textwrap.fill(para, width)) + rest
+    return "".join([space_re.sub(' ', util.wrap(para, width=width)) + rest
                     for para, rest in findparas()])
 
 def firstline(text):