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#!/usr/bin/python
import sys
import gettext
import locale
import re
def get_msgid(po_file):
'Get the first non-empty msgid from the po file'
msgid_re = re.compile(r'^\s*msgid\s+"(.+)"\s*$')
f = open(po_file)
for line in f.readlines():
match = msgid_re.search(line)
if match:
msgid = match.group(1)
f.close()
return msgid
f.close()
raise ValueError('No msgid found in %s' % po_file)
# We test our translations by taking the original untranslated string
# (e.g. msgid) and prepend a prefix character and then append a suffix
# character. The test consists of asserting that the first character in the
# translated string is the prefix, the last character in the translated string
# is the suffix and the everything between the first and last character exactly
# matches the original msgid.
#
# We use unicode characters not in the ascii character set for the prefix and
# suffix to enhance the test. To make reading the translated string easier the
# prefix is the unicode right pointing arrow and the suffix left pointing arrow,
# thus the translated string looks like the original string enclosed in
# arrows. In ASCII art the string "foo" would render as:
# -->foo<--
# Unicode right pointing arrow
prefix = u'\u2192' # utf-8 == '\xe2\x86\x92'
# Unicode left pointing arrow
suffix = u'\u2190' # utf-8 == '\xe2\x86\x90'
def main():
test_file = 'test.po'
try:
# The test installs the test message catalog under the en_US (e.g. U.S. English)
# language. It would be nice to use a dummy language not associated with any
# real language, but the setlocale function demands the locale be a valid known
# locale, U.S. English is a reasonable choice.
locale.setlocale(locale.LC_MESSAGES, 'en_US.UTF-8')
# Tell gettext that our domain is 'ipa', that locale_dir is 'test_locale'
# (i.e. where to look for the message catalog) and that we want the translations
# returned as unicode from the _() function
gettext.install('ipa', 'test_locale', unicode=1)
# We need a translatable string to test with, read one from the test po file
msgid = get_msgid(test_file)
print "Using message string \"%s\" found in file \"%s\"" % (msgid, test_file)
# Get the translated version of the msgid string by invoking _()
translated = _(msgid)
# Verify the first character is the test prefix
if translated[0] != prefix:
raise ValueError("First char in translated string \"%s\" not equal to prefix \"%s\"" % \
(translated.encode('utf-8'), prefix.encode('utf-8')))
# Verify the last character is the test suffix
if translated[-1] != suffix:
raise ValueError("Last char in translated string \"%s\" not equal to suffix \"%s\"" % \
(translated.encode('utf-8'), suffix.encode('utf-8')))
# Verify everything between the first and last character is the
# original untranslated string
if translated[1:-1] != msgid:
raise ValueError("Translated string \"%s\" minus the first & last character is not equal to msgid \"%s\"" % \
(translated.encode('utf-8'), msgid))
print "Success: message string \"%s\" maps to translated string \"%s\"" % (msgid, _(msgid).encode('utf-8'))
except Exception, e:
print >> sys.stderr, "ERROR: %s" % e
return 1
return 0
if __name__ == "__main__":
sys.exit(main())
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