Add gettext support

.travis.yml

@@ -6,7 +6,9 @@ python:
   - "3.6"
   - "3.7"
 
-install: pip install tox tox-travis
+install:
+  - make translate
+  - pip install tox tox-travis
 
 script: tox --recreate
 

MANIFEST.in

@@ -2,3 +2,4 @@ include *.rst
 include *.txt
 include setup.py
 include pytest_bdd/templates/*.mak
+include pytest_bdd/locales/*/LC_MESSAGES/*.mo

Makefile

@@ -8,7 +8,13 @@ PATH := .env/bin:$(PATH)
 develop: .env
 	pip install -e . -r requirements-testing.txt tox python-coveralls
 
-coverage: develop
+translate:
+	msgfmt pytest_bdd/locales/en/LC_MESSAGES/step-prefixes.po \
+		-o pytest_bdd/locales/en/LC_MESSAGES/step-prefixes.mo
+	msgfmt pytest_bdd/locales/pt_BR/LC_MESSAGES/step-prefixes.po \
+		-o pytest_bdd/locales/pt_BR/LC_MESSAGES/step-prefixes.mo
+
+coverage: develop translate
 	coverage run --source=pytest_bdd .env/bin/py.test tests
 	coverage report -m
 

pytest_bdd/feature.py

@@ -24,41 +24,65 @@
 """
 
 from collections import OrderedDict
-from os import path as op
+from os import path as op, environ
 import codecs
 import re
 import sys
 import textwrap
 
+import gettext
 import glob2
 import six
 
 from . import types
 from . import exceptions
 
+BASE_DIR = op.dirname(op.realpath(__file__))
+STEP_PARAM_RE = re.compile(r"\<(.+?)\>")
+COMMENT_RE = re.compile(r'(^|(?<=\s))#')
 
 # Global features dictionary
 features = {}
+_step_prefixes = None
 
 
-STEP_PREFIXES = [
-    ("Feature: ", types.FEATURE),
-    ("Scenario Outline: ", types.SCENARIO_OUTLINE),
-    ("Examples: Vertical", types.EXAMPLES_VERTICAL),
-    ("Examples:", types.EXAMPLES),
-    ("Scenario: ", types.SCENARIO),
-    ("Background:", types.BACKGROUND),
-    ("Given ", types.GIVEN),
-    ("When ", types.WHEN),
-    ("Then ", types.THEN),
-    ("@", types.TAG),
-    # Continuation of the previously mentioned step type
-    ("And ", None),
-    ("But ", None),
-]
+def set_step_prefixes(languages=None):
+    global _step_prefixes
 
-STEP_PARAM_RE = re.compile(r"\<(.+?)\>")
-COMMENT_RE = re.compile(r'(^|(?<=\s))#')
+    if _step_prefixes is None or languages:
+        if languages is None:
+            languages = environ.get('PYTEST_BDD_LANGS', 'en')
+
+        _ = gettext.translation(
+            'step-prefixes',
+            localedir=op.join(BASE_DIR, 'locales'),
+            languages=languages.split(','),
+        ).gettext
+
+        _step_prefixes = [
+            (_("Feature: "), types.FEATURE),
+            (_("Scenario Outline: "), types.SCENARIO_OUTLINE),
+            (_("Examples: Vertical"), types.EXAMPLES_VERTICAL),
+            (_("Examples:"), types.EXAMPLES),
+            (_("Scenario: "), types.SCENARIO),
+            (_("Background:"), types.BACKGROUND),
+            (_("Given "), types.GIVEN),
+            (_("When "), types.WHEN),
+            (_("Then "), types.THEN),
+            ("@", types.TAG),
+            # Continuation of the previously mentioned step type
+            (_("And "), None),
+            (_("But "), None),
+        ]
+
+    return _step_prefixes
+
+
+set_step_prefixes()
+
+
+def get_step_prefixes():
+    return _step_prefixes
 
 
 def get_step_type(line):
@@ -68,7 +92,7 @@ def get_step_type(line):
 
     :return: SCENARIO, GIVEN, WHEN, THEN, or `None` if can't be detected.
     """
-    for prefix, _type in STEP_PREFIXES:
+    for prefix, _type in get_step_prefixes():
         if line.startswith(prefix):
             return _type
 
@@ -93,7 +117,7 @@ def parse_line(line):
 
     :return: `tuple` in form ("<prefix>", "<Line without the prefix>").
     """
-    for prefix, _ in STEP_PREFIXES:
+    for prefix, _ in get_step_prefixes():
         if line.startswith(prefix):
             return prefix.strip(), line[len(prefix):].strip()
     return "", line

pytest_bdd/locales/en/LC_MESSAGES/step-prefixes.po

@@ -0,0 +1,45 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: pytest_bdd 3.2.0\n"
+"POT-Creation-Date: 2019-06-27 14:54+-03\n"
+"PO-Revision-Date: 2019-06-27 15:00-0300\n"
+"Last-Translator: <[email protected]>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: pygettext.py 1.5\n"
+"Language: en\n"
+
+msgid "Feature: "
+msgstr ""
+
+msgid "Scenario Outline: "
+msgstr ""
+
+msgid "Examples: Vertical"
+msgstr ""
+
+msgid "Examples:"
+msgstr ""
+
+msgid "Scenario: "
+msgstr ""
+
+msgid "Background:"
+msgstr ""
+
+msgid "Given "
+msgstr ""
+
+msgid "When "
+msgstr ""
+
+msgid "Then "
+msgstr ""
+
+msgid "And "
+msgstr ""
+
+msgid "But "
+msgstr ""

pytest_bdd/locales/pt_BR/LC_MESSAGES/step-prefixes.po

@@ -0,0 +1,45 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: pytest_bdd 3.2.0\n"
+"POT-Creation-Date: 2019-06-27 14:54+-03\n"
+"PO-Revision-Date: 2019-06-27 15:00-0300\n"
+"Last-Translator: <[email protected]>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: pygettext.py 1.5\n"
+"Language: pt_BR\n"
+
+msgid "Feature: "
+msgstr "Funcionalidade: "
+
+msgid "Scenario Outline: "
+msgstr "Esquema do Cenário: "
+
+msgid "Examples: Vertical"
+msgstr "Exemplos: Vertical"
+
+msgid "Examples:"
+msgstr "Exemplos:"
+
+msgid "Scenario: "
+msgstr "Cenário: "
+
+msgid "Background:"
+msgstr "Descrição:"
+
+msgid "Given "
+msgstr "Dado "
+
+msgid "When "
+msgstr "Quando "
+
+msgid "Then "
+msgstr "Então "
+
+msgid "And "
+msgstr "E "
+
+msgid "But "
+msgstr "Mas "