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import os.path
import random
import traceback
import json
from BeautifulSoup import BeautifulSoup
from datetime import datetime
from django.shortcuts import render
from django.http import HttpResponse
from django.utils.functional import Promise
from django.utils.translation import check_for_language
from django.utils.encoding import force_unicode
from django import forms
from django.template.defaultfilters import urlize as django_urlize
from django.core.paginator import Paginator, EmptyPage, InvalidPage
from django.conf import settings
from pybb import settings as pybb_settings
def render_to(template_path):
"""Expect the dict from view.
Render returned dict with RequestContext.
"""
def decorator(func):
def wrapper(request, *args, **kwargs):
import pdb
#output = pdb.runcall(func, request, *args, **kwargs)
output = func(request, *args, **kwargs)
if not isinstance(output, dict):
return output
# TODO(Franku): 'MIME_TYPE' is never in output as i can see for now.
# But if, this should maybe 'content_type' instead
if 'MIME_TYPE' in output:
kwargs['mimetype'] = output.pop('MIME_TYPE')
if 'TEMPLATE' in output:
template = output.pop('TEMPLATE')
else:
template = template_path
return render(request, template, output)
return wrapper
return decorator
def paged(paged_list_name, per_page): # , per_page_var='per_page'):
"""Parse page from GET data and pass it to view.
Split the query set returned from view.
"""
def decorator(func):
def wrapper(request, *args, **kwargs):
result = func(request, *args, **kwargs)
if not isinstance(result, dict):
return result
try:
page = int(request.GET.get('page', 1))
except ValueError:
page = 1
real_per_page = per_page
# if per_page_var:
# try:
#value = int(request.GET[per_page_var])
# except (ValueError, KeyError):
# pass
# else:
# if value > 0:
#real_per_page = value
from django.core.paginator import Paginator
paginator = Paginator(result['paged_qs'], real_per_page)
result[paged_list_name] = paginator.page(page).object_list
result['page'] = page
result['page_list'] = range(1, paginator.num_pages + 1)
result['pages'] = paginator.num_pages
result['per_page'] = real_per_page
result['request'] = request
return result
return wrapper
return decorator
def ajax(func):
"""Checks request.method is POST. Return error in JSON in other case.
If view returned dict, returns JsonResponse with this dict as
content.
"""
def wrapper(request, *args, **kwargs):
if request.method == 'POST':
try:
response = func(request, *args, **kwargs)
except Exception, ex:
response = {'error': traceback.format_exc()}
else:
response = {'error': {'type': 403,
'message': 'Accepts only POST request'}}
if isinstance(response, dict):
return JsonResponse(response)
else:
return response
return wrapper
class LazyJSONEncoder(json.JSONEncoder):
"""This fing need to save django from crashing."""
def default(self, o):
if isinstance(o, Promise):
return force_unicode(o)
else:
return super(LazyJSONEncoder, self).default(o)
class JsonResponse(HttpResponse):
"""HttpResponse subclass that serialize data into JSON format."""
# TODO(Franku): The mimetype argument maybe must be replaced with content_type
def __init__(self, data, mimetype='application/json'):
json_data = LazyJSONEncoder().encode(data)
super(JsonResponse, self).__init__(
content=json_data, content_type=mimetype)
def build_form(Form, _request, GET=False, *args, **kwargs):
"""Shorcut for building the form instance of given form class."""
if not GET and 'POST' == _request.method:
form = Form(_request.POST, _request.FILES, *args, **kwargs)
elif GET and 'GET' == _request.method:
form = Form(_request.GET, _request.FILES, *args, **kwargs)
else:
form = Form(*args, **kwargs)
return form
def urlize(data):
"""Urlize plain text links in the HTML contents.
Do not urlize content of A and CODE tags.
"""
soup = BeautifulSoup(data)
for chunk in soup.findAll(text=True):
islink = False
ptr = chunk.parent
while ptr.parent:
if ptr.name == 'a' or ptr.name == 'code':
islink = True
break
ptr = ptr.parent
if not islink:
# Using unescape to prevent conversation of f.e. > to >
chunk = chunk.replaceWith(django_urlize(unicode(unescape(chunk))))
return unicode(soup)
def quote_text(text, user, markup):
"""Quote message using selected markup."""
text = '*' + user.username + ' wrote:*\n\n' + text
if markup == 'markdown':
# Inserting a space after ">" will not change the generated HTML,
# but it will unbreak certain constructs like '>:-))'.
return '> ' + text.replace('\r', '').replace('\n', '\n> ') + '\n'
elif markup == 'bbcode':
return '[quote]\n%s\n[/quote]\n' % text
else:
return text
def absolute_url(path):
return 'http://%s%s' % (pybb_settings.HOST, path)
def memoize_method(func):
"""Cached result of function call."""
def wrapper(self, *args, **kwargs):
CACHE_NAME = '__memcache'
try:
cache = getattr(self, CACHE_NAME)
except AttributeError:
cache = {}
setattr(self, CACHE_NAME, cache)
key = (func, tuple(args), frozenset(kwargs.items()))
if key not in cache:
cache[key] = func(self, *args, **kwargs)
return cache[key]
return wrapper
def unescape(text):
"""Do reverse escaping."""
text = text.replace('&', '&')
text = text.replace('<', '<')
text = text.replace('>', '>')
text = text.replace('"', '"')
text = text.replace(''', '\'')
return text
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