bpo-2504: Add pgettext() and variants to gettext. (GH-7253)

1 files changed, 139 insertions, 25 deletions

diff --git a/Lib/test/test_gettext.py b/Lib/test/test_gettext.py
index bbad102..8c0250e 100644
--- a/Lib/test/test_gettext.py
+++ b/Lib/test/test_gettext.py
@@ -15,23 +15,27 @@ from test import support
 #  - Tests should have only one assert.
 
 GNU_MO_DATA = b'''\
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-AAAABwAAAIUBAAALAAAAjQEAAEUBAACZAQAAFgAAAN8CAAAeAAAA9gIAAKEAAAAVAwAABQAAALcD
-AAAJAAAAvQMAAAEAAAADAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAABQAAAAYAAAACAAAAAFJh
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+AAAAMAAAAIkBAAAHAAAAugEAABYAAADCAQAAHAAAANkBAAALAAAA9gEAAEIBAAACAgAAFgAAAEUD
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+bmsgd2luayAoaW4gIm15IG90aGVyIGNvbnRleHQiKQB3aW5rIHdpbmsA
 '''
 
 # This data contains an invalid major version number (5)
@@ -84,13 +88,13 @@ ciBUQUgKdHJnZ3JrZyB6cmZmbnRyIHBuZ255YnQgeXZvZW5lbC4AYmFjb24Ad2luayB3aW5rAA==
 
 
 UMO_DATA = b'''\
-3hIElQAAAAACAAAAHAAAACwAAAAFAAAAPAAAAAAAAABQAAAABAAAAFEAAAAPAQAAVgAAAAQAAABm
-AQAAAQAAAAIAAAAAAAAAAAAAAAAAAAAAYWLDngBQcm9qZWN0LUlkLVZlcnNpb246IDIuMApQTy1S
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-ZC1CeTogbWFudWFsbHkKAMKkeXoA
+3hIElQAAAAADAAAAHAAAADQAAAAAAAAAAAAAAAAAAABMAAAABAAAAE0AAAAQAAAAUgAAAA8BAABj
+AAAABAAAAHMBAAAWAAAAeAEAAABhYsOeAG15Y29udGV4dMOeBGFiw54AUHJvamVjdC1JZC1WZXJz
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 '''
 
 MMO_DATA = b'''\
@@ -147,7 +151,7 @@ class GettextTestCase1(GettextBaseTest):
         GettextBaseTest.setUp(self)
         self.localedir = os.curdir
         self.mofile = MOFILE
-        gettext.install('gettext', self.localedir)
+        gettext.install('gettext', self.localedir, names=['pgettext'])
 
     def test_some_translations(self):
         eq = self.assertEqual
@@ -157,6 +161,13 @@ class GettextTestCase1(GettextBaseTest):
         eq(_(r'Raymond Luxury Yach-t'), 'Throatwobbler Mangrove')
         eq(_(r'nudge nudge'), 'wink wink')
 
+    def test_some_translations_with_context(self):
+        eq = self.assertEqual
+        eq(pgettext('my context', 'nudge nudge'),
+           'wink wink (in "my context")')
+        eq(pgettext('my other context', 'nudge nudge'),
+           'wink wink (in "my other context")')
+
     def test_double_quotes(self):
         eq = self.assertEqual
         # double quotes
@@ -251,6 +262,20 @@ class GettextTestCase2(GettextBaseTest):
         eq(self._(r'Raymond Luxury Yach-t'), 'Throatwobbler Mangrove')
         eq(self._(r'nudge nudge'), 'wink wink')
 
+    def test_some_translations_with_context(self):
+        eq = self.assertEqual
+        eq(gettext.pgettext('my context', 'nudge nudge'),
+           'wink wink (in "my context")')
+        eq(gettext.pgettext('my other context', 'nudge nudge'),
+           'wink wink (in "my other context")')
+
+    def test_some_translations_with_context_and_domain(self):
+        eq = self.assertEqual
+        eq(gettext.dpgettext('gettext', 'my context', 'nudge nudge'),
+           'wink wink (in "my context")')
+        eq(gettext.dpgettext('gettext', 'my other context', 'nudge nudge'),
+           'wink wink (in "my other context")')
+
     def test_double_quotes(self):
         eq = self.assertEqual
         # double quotes
@@ -298,6 +323,15 @@ class PluralFormsTestCase(GettextBaseTest):
         x = gettext.ngettext('There is %s file', 'There are %s files', 2)
         eq(x, 'Hay %s ficheros')
 
+    def test_plural_context_forms1(self):
+        eq = self.assertEqual
+        x = gettext.npgettext('With context',
+                              'There is %s file', 'There are %s files', 1)
+        eq(x, 'Hay %s fichero (context)')
+        x = gettext.npgettext('With context',
+                              'There is %s file', 'There are %s files', 2)
+        eq(x, 'Hay %s ficheros (context)')
+
     def test_plural_forms2(self):
         eq = self.assertEqual
         with open(self.mofile, 'rb') as fp:
@@ -307,6 +341,17 @@ class PluralFormsTestCase(GettextBaseTest):
         x = t.ngettext('There is %s file', 'There are %s files', 2)
         eq(x, 'Hay %s ficheros')
 
+    def test_plural_context_forms2(self):
+        eq = self.assertEqual
+        with open(self.mofile, 'rb') as fp:
+            t = gettext.GNUTranslations(fp)
+        x = t.npgettext('With context',
+                        'There is %s file', 'There are %s files', 1)
+        eq(x, 'Hay %s fichero (context)')
+        x = t.npgettext('With context',
+                        'There is %s file', 'There are %s files', 2)
+        eq(x, 'Hay %s ficheros (context)')
+
     # Examples from http://www.gnu.org/software/gettext/manual/gettext.html
 
     def test_ja(self):
@@ -646,6 +691,7 @@ class UnicodeTranslationsTest(GettextBaseTest):
         with open(UMOFILE, 'rb') as fp:
             self.t = gettext.GNUTranslations(fp)
         self._ = self.t.gettext
+        self.pgettext = self.t.pgettext
 
     def test_unicode_msgid(self):
         self.assertIsInstance(self._(''), str)
@@ -653,6 +699,53 @@ class UnicodeTranslationsTest(GettextBaseTest):
     def test_unicode_msgstr(self):
         self.assertEqual(self._('ab\xde'), '\xa4yz')
 
+    def test_unicode_context_msgstr(self):
+        t = self.pgettext('mycontext\xde', 'ab\xde')
+        self.assertTrue(isinstance(t, str))
+        self.assertEqual(t, '\xa4yz (context version)')
+
+
+class UnicodeTranslationsPluralTest(GettextBaseTest):
+    def setUp(self):
+        GettextBaseTest.setUp(self)
+        with open(MOFILE, 'rb') as fp:
+            self.t = gettext.GNUTranslations(fp)
+        self.ngettext = self.t.ngettext
+        self.npgettext = self.t.npgettext
+
+    def test_unicode_msgid(self):
+        unless = self.assertTrue
+        unless(isinstance(self.ngettext('', '', 1), str))
+        unless(isinstance(self.ngettext('', '', 2), str))
+
+    def test_unicode_context_msgid(self):
+        unless = self.assertTrue
+        unless(isinstance(self.npgettext('', '', '', 1), str))
+        unless(isinstance(self.npgettext('', '', '', 2), str))
+
+    def test_unicode_msgstr(self):
+        eq = self.assertEqual
+        unless = self.assertTrue
+        t = self.ngettext("There is %s file", "There are %s files", 1)
+        unless(isinstance(t, str))
+        eq(t, "Hay %s fichero")
+        unless(isinstance(t, str))
+        t = self.ngettext("There is %s file", "There are %s files", 5)
+        unless(isinstance(t, str))
+        eq(t, "Hay %s ficheros")
+
+    def test_unicode_msgstr_with_context(self):
+        eq = self.assertEqual
+        unless = self.assertTrue
+        t = self.npgettext("With context",
+                           "There is %s file", "There are %s files", 1)
+        unless(isinstance(t, str))
+        eq(t, "Hay %s fichero (context)")
+        t = self.npgettext("With context",
+                           "There is %s file", "There are %s files", 5)
+        unless(isinstance(t, str))
+        eq(t, "Hay %s ficheros (context)")
+
 
 class WeirdMetadataTest(GettextBaseTest):
     def setUp(self):
@@ -750,6 +843,14 @@ msgstr ""
 msgid "nudge nudge"
 msgstr "wink wink"
 
+msgctxt "my context"
+msgid "nudge nudge"
+msgstr "wink wink (in \"my context\")"
+
+msgctxt "my other context"
+msgid "nudge nudge"
+msgstr "wink wink (in \"my other context\")"
+
 #: test_gettext.py:16 test_gettext.py:22 test_gettext.py:28 test_gettext.py:34
 #: test_gettext.py:77 test_gettext.py:83 test_gettext.py:89 test_gettext.py:95
 msgid "albatross"
@@ -782,6 +883,14 @@ msgid "There is %s file"
 msgid_plural "There are %s files"
 msgstr[0] "Hay %s fichero"
 msgstr[1] "Hay %s ficheros"
+
+# Manually added, as neither pygettext nor xgettext support plural forms
+# and context in Python.
+msgctxt "With context"
+msgid "There is %s file"
+msgid_plural "There are %s files"
+msgstr[0] "Hay %s fichero (context)"
+msgstr[1] "Hay %s ficheros (context)"
 '''
 
 # Here's the second example po file example, used to generate the UMO_DATA
@@ -806,6 +915,11 @@ msgstr ""
 #: nofile:0
 msgid "ab\xc3\x9e"
 msgstr "\xc2\xa4yz"
+
+#: nofile:1
+msgctxt "mycontext\xc3\x9e"
+msgid "ab\xc3\x9e"
+msgstr "\xc2\xa4yz (context version)"
 '''
 
 # Here's the third example po file, used to generate MMO_DATA