From 87b9866c7c2ebeaa3c1c010176fa3bc24e017300 Mon Sep 17 00:00:00 2001
From: "Sean B. Palmer" <http://inamidst.com/sbp/>
Date: Fri, 23 May 2008 19:16:38 +0100
Subject: [PATCH] New translation module, using the Google Ajax interface.

---
 modules/translate.py | 126 +++++++++++++++----------------------------
 1 file changed, 43 insertions(+), 83 deletions(-)

diff --git a/modules/translate.py b/modules/translate.py
index 27bd094..cf960aa 100755
--- a/modules/translate.py
+++ b/modules/translate.py
@@ -8,107 +8,67 @@ Licensed under the Eiffel Forum License 2.
 http://inamidst.com/phenny/
 """
 
-import re, time
+import re, urllib
 import web
 
-r_translation = re.compile(r'<div style="padding:\S+?;">([^<]+)</div>')
+r_json = re.compile(r'^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]+$')
+r_string = re.compile(r'("(\\.|[^"\\])*")')
+env = {'__builtins__': None, 'null': None, 
+       'true': True, 'false': False}
 
-def guess_language(phrase): 
-   languages = {
-      'english': 'en', 
-      'french': 'fr', 
-      'spanish': 'es', 
-      'portuguese': 'pt', 
-      'german': 'de', 
-      'italian': 'it', 
-      'korean': 'ko', 
-      'japanese': 'ja', 
-      'chinese': 'zh', 
-      'dutch': 'nl', 
-      'greek': 'el', 
-      'russian': 'ru'
-   }
+def json(text): 
+   """Evaluate JSON text safely (we hope)."""
+   if r_json.match(r_string.sub('', text)): 
+      text = r_string.sub(lambda m: 'u' + m.group(1), text)
+      return eval(text.strip(' \t\r\n'), env, {})
+   raise ValueError('Input must be serialised JSON.')
 
-   uri = 'http://www.xrce.xerox.com/cgi-bin/mltt/LanguageGuesser'
-   form = {'Text': phrase}
-   bytes = web.post(uri, form)
-   for line in bytes.splitlines(): 
-      if '<listing><font size=+1>' in line: 
-         i = line.find('<listing><font size=+1>')
-         lang = line[i+len('<listing><font size=+1>'):].strip()
-         lang = lang.lower()
-         if '_' in lang: 
-            j = lang.find('_')
-            lang = lang[:j]
-         try: return languages[lang].lower()
-         except KeyError: 
-            return lang.lower()
-   return 'Moon Language'
+def detect(text): 
+   uri = 'http://ajax.googleapis.com/ajax/services/language/detect'
+   q = urllib.quote(text)
+   bytes = web.get(uri + '?q=' + q + '&v=1.0')
+   result = json(bytes)
+   try: return result['responseData']['language']
+   except Exception: return None
 
-def translate(phrase, lang, target='en'): 
-   babelfish = 'http://uk.babelfish.yahoo.com/translate_txt'
-   form = {
-      'ei': 'UTF-8', 
-      'doit': 'done', 
-      'fr': 'bf-home', 
-      'intl': '1', 
-      'tt': 'urltext', 
-      'trtext': phrase, 
-      'lp': lang + '_' + target
-   }
+def translate(text, input, output): 
+   uri = 'http://ajax.googleapis.com/ajax/services/language/translate'
+   q = urllib.quote(text)
+   pair = input + '%7C' + output
+   bytes = web.get(uri + '?q=' + q + '&v=1.0&langpair=' + pair)
+   result = json(bytes)
+   try: msg = result['responseData']['translatedText']
+   except Exception: 
+      msg = 'The %s to %s translation failed, sorry!' % (input, output)
+   else: 
+      msg = msg.encode('cp1252').replace('&#39;', "'")
+      msg = '"%s" (%s to %s, translate.google.com)' % (msg, input, output)
+   return msg
 
-   bytes = web.post(babelfish, form)
-   m = r_translation.search(bytes)
-   if m: 
-      translation = m.group(1)
-      translation = translation.replace('\r', ' ')
-      translation = translation.replace('\n', ' ')
-      while '  ' in translation:
-         translation = translation.replace('  ', ' ')
-      return translation.lower()
-   return None
-
-def tr(phenny, input): 
+def tr(phenny, context): 
    """Translates a phrase, with an optional language hint."""
-   original_input = input
-   input, output, phrase = original_input.groups()
+   input, output, phrase = context.groups()
+
    phrase = phrase.encode('utf-8')
-   if (len(phrase) > 350) and (not original_input.admin): 
+
+   if (len(phrase) > 350) and (not context.admin): 
       return phenny.reply('Phrase must be under 350 characters.')
 
-   input = input or guess_language(phrase)
+   input = input or detect(phrase)
    if not input: 
-      return phenny.reply('Unable to guess the language, sorry.')
+      err = 'Unable to guess your crazy moon language, sorry.'
+      return phenny.reply(err)
    input = input.encode('utf-8')
    output = (output or 'en').encode('utf-8')
 
-   if not ((input == 'en') and (output == 'en')): 
-      translation = translate(phrase, input, output)
-      if translation is not None: 
-         translation = translation.decode('utf-8').encode('utf-8')
-         if output == 'en': 
-            return phenny.reply('"%s" (%s)' % (translation, input))
-         else: return phenny.reply('"%s" (%s -> %s)' % \
-                                   (translation, input, output))
+   if input != output: 
+      msg = translate(phrase, input, output)
+      phenny.reply(msg)
+   else: phenny.reply('Ehwhatnow?')
 
-      error = "I think it's %s, but I can't translate it currently."
-      return phenny.reply(error % input.title())
-
-   # Otherwise, it's English, so mangle it for fun
-   for other in ['de', 'ja', 'de', 'ja', 'de', 'ja', 'de', 'ja', 'de', 'ja']: 
-      phrase = translate(phrase, 'en', other)
-      phrase = translate(phrase, other, 'en')
-      time.sleep(0.1)
-
-   if phrase is not None: 
-      return phenny.reply(u'"%s" (en-unmangled)' % phrase)
-   return phenny.reply("I think it's English already.")
-   # @@ or 'Why but that be English, sire.'
 tr.rule = ('$nick', ur'(?:([a-z]{2}) +)?(?:([a-z]{2}) +)?["“](.+?)["”]\? *$')
 tr.example = '$nickname: "mon chien"? or $nickname: fr "mon chien"?'
 tr.priority = 'low'
 
-# @@ mangle
-
 if __name__ == '__main__': 
    print __doc__.strip()