google translator

gistfile1.pyw

class Translator(object):
    translate_url = "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=%(message)s&langpair=%(from)s%%7C%(to)s"

    def __init__(self):
        self.browser = Browser()

    def translate(self, message, lang_to='en', lang_from=''):
        """
        Given a 'message' translate it from 'lang_from' to 'lang_to'.
        If 'lang_from' is empty, auto-detects the language.
        Returns the translated message.
        """

        if lang_to not in _languages:
            raise TranslationError, "Language %s is not supported as lang_to." % lang_to
        if lang_from not in _languages and lang_from != '':
            raise TranslationError, "Language %s is not supported as lang_from." % lang_from

        message = quote_plus(message)
        real_url = Translator.translate_url % { 'message': message,
                                                'from':    lang_from,
                                                'to':      lang_to }

        try:
            translation = self.browser.get_page(real_url)
            data = json.loads(translation)

            if data['responseStatus'] != 200:
                raise TranslationError, "Failed translating: %s" % data['responseDetails']

            return data['responseData']['translatedText']
        except BrowserError, e:
            raise TranslationError, "Failed translating (getting %s failed): %s" % (e.url, e.error)
        except ValueError, e:
            raise TranslationError, "Failed translating (json failed): %s" % e.message
        except KeyError, e:
            raise TranslationError, "Failed translating, response didn't contain the translation"

        return None