diff options
Diffstat (limited to 'Lib/gettext.py')
| -rw-r--r-- | Lib/gettext.py | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/Lib/gettext.py b/Lib/gettext.py index 2be677b..79a025f 100644 --- a/Lib/gettext.py +++ b/Lib/gettext.py @@ -32,7 +32,7 @@ internationalized, to the local language and cultural habits. # Francois Pinard and Marc-Andre Lemburg also contributed valuably to this # module. # -# J. David Ibanez implemented plural forms. +# J. David Ibanez implemented plural forms. Bruno Haible fixed some bugs. # # TODO: # - Lazy loading of .mo files. Currently the entire catalog is loaded into @@ -80,16 +80,21 @@ def c2py(plural): from StringIO import StringIO import token, tokenize tokens = tokenize.generate_tokens(StringIO(plural).readline) - danger = [ x for x in tokens if x[0] == token.NAME and x[1] != 'n' ] - if danger: - raise ValueError, 'dangerous expression' + try: + danger = [ x for x in tokens if x[0] == token.NAME and x[1] != 'n' ] + except tokenize.TokenError: + raise ValueError, \ + 'plural forms expression error, maybe unbalanced parenthesis' + else: + if danger: + raise ValueError, 'plural forms expression could be dangerous' # Replace some C operators by their Python equivalents plural = plural.replace('&&', ' and ') plural = plural.replace('||', ' or ') - expr = re.compile(r'\![^=]') - plural = expr.sub(' not ', plural) + expr = re.compile(r'\!([^=])') + plural = expr.sub(' not \\1', plural) # Regular expression and replacement function used to transform # "a?b:c" to "test(a,b,c)". @@ -104,7 +109,10 @@ def c2py(plural): if c == '(': stack.append('') elif c == ')': - if len(stack) == 0: + if len(stack) == 1: + # Actually, we never reach this code, because unbalanced + # parentheses get caught in the security check at the + # beginning. raise ValueError, 'unbalanced parenthesis in plural form' s = expr.sub(repl, stack.pop()) stack[-1] += '(%s)' % s @@ -225,6 +233,7 @@ class GNUTranslations(NullTranslations): # Parse the .mo file header, which consists of 5 little endian 32 # bit words. self._catalog = catalog = {} + self.plural = lambda n: int(n != 1) # germanic plural by default buf = fp.read() buflen = len(buf) # Are we big endian or little endian? @@ -258,7 +267,7 @@ class GNUTranslations(NullTranslations): else: raise IOError(0, 'File is corrupt', filename) # See if we're looking at GNU .mo conventions for metadata - if mlen == 0 and tmsg.lower().startswith('project-id-version:'): + if mlen == 0: # Catalog description for item in tmsg.split('\n'): item = item.strip() |