Commits

Jakub Wilk committed 0737b97

lib.gettext: don't use eval().

Comments (0)

Files changed (2)

 import re
 
 from lib import misc
+from lib import intexpr
 
 class GettextInfo(object):
 
     [s] = stack
     s = _subst_ifelse(s)
     try:
-        fn = eval('lambda n: int({})'.format(s))
+        fn = intexpr.Expression(s)
     except SyntaxError as exc: # <no-coverage>
         # This should never happen.
         assert 0, "{!r} couldn't be parsed as Python expression".format(s) # <no-coverage>
         raise PluralExpressionSyntaxError # <no-coverage>
-    fn.__name__ = 'plural'
     return fn
 
 _parse_plural_forms = re.compile(r'^\s*nplurals=([1-9][0-9]*);\s*plural=([^;]+);?\s*$').match
+# Copyright © 2012 Jakub Wilk <jwilk@jwilk.net>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the “Software”), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import ast
+
+class Expression(object):
+
+    def __init__(self, s):
+        self._tree = ast.parse(s, filename='<intexpr>')
+
+# vim:ts=4 sw=4 et