pofile.py: Added new exception called PoFileError and thrown if flagged

This new exception is thrown when the po parser finds an invalid pofile.
This helps handle invalid po files that are parsed. Invalid po files may cause
other possible errors such as a UnicodeEncodeError.

Closes https://github.com/python-babel/babel/issues/531

1 files changed, 65 insertions, 1 deletions

diff --git a/tests/messages/test_pofile.py b/tests/messages/test_pofile.py
index f6cd66d..002954f 100644
--- a/tests/messages/test_pofile.py
+++ b/tests/messages/test_pofile.py
@@ -13,6 +13,7 @@
 
 from datetime import datetime
 import unittest
+import sys
 
 from babel.core import Locale
 from babel.messages.catalog import Catalog, Message
@@ -20,7 +21,6 @@ from babel.messages import pofile
 from babel.util import FixedOffsetTimezone
 from babel._compat import StringIO, BytesIO
 
-
 class ReadPoTestCase(unittest.TestCase):
 
     def test_preserve_locale(self):
@@ -429,6 +429,70 @@ msgstr[2] "Vohs [text]"
         self.assertEqual("", message.string[1])
         self.assertEqual("Vohs [text]", message.string[2])
 
+    def test_abort_invalid_po_file(self):
+        invalid_po = '''
+            msgctxt ""
+            "{\"checksum\": 2148532640, \"cxt\": \"collector_thankyou\", \"id\": "
+            "270005359}"
+            msgid ""
+            "Thank you very much for your time.\n"
+            "If you have any questions regarding this survey, please contact Fulano "
+            "at nadie@blah.com"
+            msgstr "Merci de prendre le temps de remplir le sondage.
+            Pour toute question, veuillez communiquer avec Fulano  à nadie@blah.com
+            "
+        '''
+        invalid_po_2 = '''
+            msgctxt ""
+            "{\"checksum\": 2148532640, \"cxt\": \"collector_thankyou\", \"id\": "
+            "270005359}"
+            msgid ""
+            "Thank you very much for your time.\n"
+            "If you have any questions regarding this survey, please contact Fulano "
+            "at fulano@blah.com."
+            msgstr "Merci de prendre le temps de remplir le sondage.
+            Pour toute question, veuillez communiquer avec Fulano a fulano@blah.com
+            "
+            '''
+        # Catalog not created, throws Unicode Error
+        buf = StringIO(invalid_po)
+        output = None
+
+        # This should only be thrown under py27
+        if sys.version_info.major == 2:
+            with self.assertRaises(UnicodeEncodeError):
+                output = pofile.read_po(buf, locale='fr', abort_invalid=False)
+            assert not output
+        else:
+            output = pofile.read_po(buf, locale='fr', abort_invalid=False)
+            assert isinstance(output, Catalog)
+
+        # Catalog not created, throws PoFileError
+        buf = StringIO(invalid_po_2)
+        output = None
+        with self.assertRaises(pofile.PoFileError) as e:
+            output = pofile.read_po(buf, locale='fr', abort_invalid=True)
+        assert not output
+
+        # Catalog is created with warning, no abort
+        buf = StringIO(invalid_po_2)
+        output = pofile.read_po(buf, locale='fr', abort_invalid=False)
+        assert isinstance(output, Catalog)
+
+        # Catalog not created, aborted with PoFileError
+        buf = StringIO(invalid_po_2)
+        output = None
+        with self.assertRaises(pofile.PoFileError) as e:
+            output = pofile.read_po(buf, locale='fr', abort_invalid=True)
+        assert not output
+
+    def test_invalid_pofile_with_abort_flag(self):
+        parser = pofile.PoFileParser(None, abort_invalid=True)
+        lineno = 10
+        line = 'Algo esta mal'
+        msg = 'invalid file'
+        with self.assertRaises(pofile.PoFileError) as e:
+            parser._invalid_pofile(line, lineno, msg)
 
 class WritePoTestCase(unittest.TestCase):