Ability to change lexer on the fly in raw views.

snipts/urls.py

@@ -8,8 +8,8 @@ urlpatterns = patterns('',
     url(r'^public/$',                                      views.list_public,   name='list-public'),
     url(r'^public/tag/(?P<tag_slug>[^/]+)/$',              views.list_public,   name='list-public-tag'),
     url(r'^embed/(?P<snipt_key>[^/]+)/$',                  views.embed,         name='embed'),
-    url(r'^raw/(?P<snipt_key>[^/]+)/$',                    views.raw,           name='raw'),
-    url(r'^s/(?P<snipt_key>[^/]+)/$',                        views.redirect,      name='redirect'),
+    url(r'^raw/(?P<snipt_key>[^/]+)/(?P<lexer>[^\?]+)?$',  views.raw,           name='raw'),
+    url(r'^s/(?P<snipt_key>[^/]+)/(?P<lexer>[^\?]+)?$',    views.redirect,      name='redirect'),
     url(r'^(?P<username_or_custom_slug>[^/]+)/$',          views.list_user,     name='list-user'),
     url(r'^(?P<username_or_custom_slug>[^/]+)/tag/(?P<tag_slug>[^/]+)/$', views.list_user, name='list-user-tag'),
     url(r'^(?P<username>[^/]+)/favorites/$',               views.favorites,     name='favorites'),

snipts/views.py

@@ -2,6 +2,7 @@ from django.http import Http404, HttpResponseRedirect, HttpResponseBadRequest
 from django.shortcuts import get_object_or_404, render_to_response
 from django.core.paginator import Paginator, InvalidPage
 from annoying.functions import get_object_or_None
+from pygments.lexers import get_lexer_by_name
 from django.contrib.auth.models import User
 from django.template import RequestContext
 from annoying.decorators import render_to
@@ -236,9 +237,24 @@ def list_user(request, username_or_custom_slug, tag_slug=None):
 
     return context
 
-def raw(request, snipt_key):
+def raw(request, snipt_key, lexer=None):
     snipt = get_object_or_404(Snipt, key=snipt_key)
 
+    if request.user == snipt.user:
+        if lexer:
+            lexer = lexer.strip('/')
+
+            if lexer != snipt.lexer:
+
+                try:
+                    lexer_obj = get_lexer_by_name(lexer)
+                except:
+                    lexer_obj = None
+
+                if lexer_obj:
+                    snipt.lexer = lexer
+                    snipt.save()
+
     if snipt.lexer == 'js':
         mimetype='text/javascript'
     else:
@@ -252,7 +268,7 @@ def raw(request, snipt_key):
                               context_instance=RequestContext(request),
                               mimetype=mimetype)
 
-def redirect(request, snipt_key):
+def redirect(request, snipt_key, lexer=None):
     snipt = get_object_or_404(Snipt, key=snipt_key)
     return HttpResponseRedirect(snipt.get_absolute_url())