from cm.diff import text_diff as _text_diff, \

    text_history as inner_text_history, get_colors

from cm.message import display_message

from cm.models import Text, TextVersion, Attachment, Comment, Configuration

from cm.security import has_global_perm

from cm.utils.spannifier import spannify

from django import forms

from django.core.urlresolvers import reverse

from django.forms import ModelForm

from django.forms.util import ErrorList

from django.http import HttpResponse, HttpResponseRedirect, Http404

from django.shortcuts import render_to_response

from django.template import RequestContext

from django.utils.translation import ugettext as _, ugettext_lazy

from django.views.generic.list_detail import object_list

import mimetypes

import simplejson

import sys

def get_text_by_keys_or_404(key, adminkey=None):

    try:

        if not adminkey:

            return Text.objects.get(key=key)

        else:

            return Text.objects.get(key = key, adminkey = adminkey)

    except Text.DoesNotExist:

        raise Http404('No Text with such keys')

def get_keys_from_dict(dico, prefix):

    res = {}

    for k, v in dico.items():

        if k.startswith(prefix):

            key = k[len(prefix):]

            if key == u'_':

                key = None

            res[key] = v

    return res

def unauthorized(request):

    resp = render_to_response('site/unauthorized.html', context_instance=RequestContext(request))

    resp.status_code = 403

    return resp

def redirect(request, view_id, args):

    return HttpResponseRedirect(reverse(view_id, args=args))