diffs: move diffmode to template global context and add it to session

so mode is saved between requests

rhodecode/lib/base.py

@@ -1,592 +1,604 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 The base Controller API
 Provides the BaseController class for subclassing. And usage in different
 controllers
 """
 
 import logging
 import socket
 
 import ipaddress
 import pyramid.threadlocal
 
 from paste.auth.basic import AuthBasicAuthenticator
 from paste.httpexceptions import HTTPUnauthorized, HTTPForbidden, get_exception
 from paste.httpheaders import WWW_AUTHENTICATE, AUTHORIZATION
 from pylons import config, tmpl_context as c, request, session, url
 from pylons.controllers import WSGIController
 from pylons.controllers.util import redirect
 from pylons.i18n import translation
 # marcink: don't remove this import
 from pylons.templating import render_mako as render  # noqa
 from pylons.i18n.translation import _
 from webob.exc import HTTPFound
 
 
 import rhodecode
 from rhodecode.authentication.base import VCS_TYPE
 from rhodecode.lib import auth, utils2
 from rhodecode.lib import helpers as h
 from rhodecode.lib.auth import AuthUser, CookieStoreWrapper
 from rhodecode.lib.exceptions import UserCreationError
 from rhodecode.lib.utils import (
     get_repo_slug, set_rhodecode_config, password_changed,
     get_enabled_hook_classes)
 from rhodecode.lib.utils2 import (
     str2bool, safe_unicode, AttributeDict, safe_int, md5, aslist)
 from rhodecode.lib.vcs.exceptions import RepositoryRequirementError
 from rhodecode.model import meta
 from rhodecode.model.db import Repository, User
 from rhodecode.model.notification import NotificationModel
 from rhodecode.model.scm import ScmModel
 from rhodecode.model.settings import VcsSettingsModel, SettingsModel
 
 
 log = logging.getLogger(__name__)
 
 
 def _filter_proxy(ip):
     """
     Passed in IP addresses in HEADERS can be in a special format of multiple
     ips. Those comma separated IPs are passed from various proxies in the
     chain of request processing. The left-most being the original client.
     We only care about the first IP which came from the org. client.
 
     :param ip: ip string from headers
     """
     if ',' in ip:
         _ips = ip.split(',')
         _first_ip = _ips[0].strip()
         log.debug('Got multiple IPs %s, using %s', ','.join(_ips), _first_ip)
         return _first_ip
     return ip
 
 
 def _filter_port(ip):
     """
     Removes a port from ip, there are 4 main cases to handle here.
     - ipv4 eg. 127.0.0.1
     - ipv6 eg. ::1
     - ipv4+port eg. 127.0.0.1:8080
     - ipv6+port eg. [::1]:8080
 
     :param ip:
     """
     def is_ipv6(ip_addr):
         if hasattr(socket, 'inet_pton'):
             try:
                 socket.inet_pton(socket.AF_INET6, ip_addr)
             except socket.error:
                 return False
         else:
             # fallback to ipaddress
             try:
                 ipaddress.IPv6Address(ip_addr)
             except Exception:
                 return False
         return True
 
     if ':' not in ip:  # must be ipv4 pure ip
         return ip
 
     if '[' in ip and ']' in ip:  # ipv6 with port
         return ip.split(']')[0][1:].lower()
 
     # must be ipv6 or ipv4 with port
     if is_ipv6(ip):
         return ip
     else:
         ip, _port = ip.split(':')[:2]  # means ipv4+port
         return ip
 
 
 def get_ip_addr(environ):
     proxy_key = 'HTTP_X_REAL_IP'
     proxy_key2 = 'HTTP_X_FORWARDED_FOR'
     def_key = 'REMOTE_ADDR'
     _filters = lambda x: _filter_port(_filter_proxy(x))
 
     ip = environ.get(proxy_key)
     if ip:
         return _filters(ip)
 
     ip = environ.get(proxy_key2)
     if ip:
         return _filters(ip)
 
     ip = environ.get(def_key, '0.0.0.0')
     return _filters(ip)
 
 
 def get_server_ip_addr(environ, log_errors=True):
     hostname = environ.get('SERVER_NAME')
     try:
         return socket.gethostbyname(hostname)
     except Exception as e:
         if log_errors:
             # in some cases this lookup is not possible, and we don't want to
             # make it an exception in logs
             log.exception('Could not retrieve server ip address: %s', e)
         return hostname
 
 
 def get_server_port(environ):
     return environ.get('SERVER_PORT')
 
 
 def get_access_path(environ):
     path = environ.get('PATH_INFO')
     org_req = environ.get('pylons.original_request')
     if org_req:
         path = org_req.environ.get('PATH_INFO')
     return path
 
 
 def vcs_operation_context(
         environ, repo_name, username, action, scm, check_locking=True,
         is_shadow_repo=False):
     """
     Generate the context for a vcs operation, e.g. push or pull.
 
     This context is passed over the layers so that hooks triggered by the
     vcs operation know details like the user, the user's IP address etc.
 
     :param check_locking: Allows to switch of the computation of the locking
         data. This serves mainly the need of the simplevcs middleware to be
         able to disable this for certain operations.
 
     """
     # Tri-state value: False: unlock, None: nothing, True: lock
     make_lock = None
     locked_by = [None, None, None]
     is_anonymous = username == User.DEFAULT_USER
     if not is_anonymous and check_locking:
         log.debug('Checking locking on repository "%s"', repo_name)
         user = User.get_by_username(username)
         repo = Repository.get_by_repo_name(repo_name)
         make_lock, __, locked_by = repo.get_locking_state(
             action, user.user_id)
 
     settings_model = VcsSettingsModel(repo=repo_name)
     ui_settings = settings_model.get_ui_settings()
 
     extras = {
         'ip': get_ip_addr(environ),
         'username': username,
         'action': action,
         'repository': repo_name,
         'scm': scm,
         'config': rhodecode.CONFIG['__file__'],
         'make_lock': make_lock,
         'locked_by': locked_by,
         'server_url': utils2.get_server_url(environ),
         'hooks': get_enabled_hook_classes(ui_settings),
         'is_shadow_repo': is_shadow_repo,
     }
     return extras
 
 
 class BasicAuth(AuthBasicAuthenticator):
 
     def __init__(self, realm, authfunc, registry, auth_http_code=None,
                  initial_call_detection=False):
         self.realm = realm
         self.initial_call = initial_call_detection
         self.authfunc = authfunc
         self.registry = registry
         self._rc_auth_http_code = auth_http_code
 
     def _get_response_from_code(self, http_code):
         try:
             return get_exception(safe_int(http_code))
         except Exception:
             log.exception('Failed to fetch response for code %s' % http_code)
             return HTTPForbidden
 
     def build_authentication(self):
         head = WWW_AUTHENTICATE.tuples('Basic realm="%s"' % self.realm)
         if self._rc_auth_http_code and not self.initial_call:
             # return alternative HTTP code if alternative http return code
             # is specified in RhodeCode config, but ONLY if it's not the
             # FIRST call
             custom_response_klass = self._get_response_from_code(
                 self._rc_auth_http_code)
             return custom_response_klass(headers=head)
         return HTTPUnauthorized(headers=head)
 
     def authenticate(self, environ):
         authorization = AUTHORIZATION(environ)
         if not authorization:
             return self.build_authentication()
         (authmeth, auth) = authorization.split(' ', 1)
         if 'basic' != authmeth.lower():
             return self.build_authentication()
         auth = auth.strip().decode('base64')
         _parts = auth.split(':', 1)
         if len(_parts) == 2:
             username, password = _parts
             if self.authfunc(
                     username, password, environ, VCS_TYPE,
                     registry=self.registry):
                 return username
             if username and password:
                 # we mark that we actually executed authentication once, at
                 # that point we can use the alternative auth code
                 self.initial_call = False
 
         return self.build_authentication()
 
     __call__ = authenticate
 
 
 def attach_context_attributes(context, request):
     """
     Attach variables into template context called `c`, please note that
     request could be pylons or pyramid request in here.
     """
     rc_config = SettingsModel().get_all_settings(cache=True)
 
     context.rhodecode_version = rhodecode.__version__
     context.rhodecode_edition = config.get('rhodecode.edition')
     # unique secret + version does not leak the version but keep consistency
     context.rhodecode_version_hash = md5(
         config.get('beaker.session.secret', '') +
         rhodecode.__version__)[:8]
 
     # Default language set for the incoming request
     context.language = translation.get_lang()[0]
 
     # Visual options
     context.visual = AttributeDict({})
 
     # DB stored Visual Items
     context.visual.show_public_icon = str2bool(
         rc_config.get('rhodecode_show_public_icon'))
     context.visual.show_private_icon = str2bool(
         rc_config.get('rhodecode_show_private_icon'))
     context.visual.stylify_metatags = str2bool(
         rc_config.get('rhodecode_stylify_metatags'))
     context.visual.dashboard_items = safe_int(
         rc_config.get('rhodecode_dashboard_items', 100))
     context.visual.admin_grid_items = safe_int(
         rc_config.get('rhodecode_admin_grid_items', 100))
     context.visual.repository_fields = str2bool(
         rc_config.get('rhodecode_repository_fields'))
     context.visual.show_version = str2bool(
         rc_config.get('rhodecode_show_version'))
     context.visual.use_gravatar = str2bool(
         rc_config.get('rhodecode_use_gravatar'))
     context.visual.gravatar_url = rc_config.get('rhodecode_gravatar_url')
     context.visual.default_renderer = rc_config.get(
         'rhodecode_markup_renderer', 'rst')
     context.visual.rhodecode_support_url = \
         rc_config.get('rhodecode_support_url') or url('rhodecode_support')
 
     context.pre_code = rc_config.get('rhodecode_pre_code')
     context.post_code = rc_config.get('rhodecode_post_code')
     context.rhodecode_name = rc_config.get('rhodecode_title')
     context.default_encodings = aslist(config.get('default_encoding'), sep=',')
     # if we have specified default_encoding in the request, it has more
     # priority
     if request.GET.get('default_encoding'):
         context.default_encodings.insert(0, request.GET.get('default_encoding'))
     context.clone_uri_tmpl = rc_config.get('rhodecode_clone_uri_tmpl')
 
     # INI stored
     context.labs_active = str2bool(
         config.get('labs_settings_active', 'false'))
     context.visual.allow_repo_location_change = str2bool(
         config.get('allow_repo_location_change', True))
     context.visual.allow_custom_hooks_settings = str2bool(
         config.get('allow_custom_hooks_settings', True))
     context.debug_style = str2bool(config.get('debug_style', False))
 
     context.rhodecode_instanceid = config.get('instance_id')
 
     # AppEnlight
     context.appenlight_enabled = str2bool(config.get('appenlight', 'false'))
     context.appenlight_api_public_key = config.get(
         'appenlight.api_public_key', '')
     context.appenlight_server_url = config.get('appenlight.server_url', '')
 
     # JS template context
     context.template_context = {
         'repo_name': None,
         'repo_type': None,
         'repo_landing_commit': None,
         'rhodecode_user': {
             'username': None,
             'email': None,
             'notification_status': False
         },
         'visual': {
             'default_renderer': None
         },
         'commit_data': {
             'commit_id': None
         },
         'pull_request_data': {'pull_request_id': None},
         'timeago': {
             'refresh_time': 120 * 1000,
             'cutoff_limit': 1000 * 60 * 60 * 24 * 7
         },
         'pylons_dispatch': {
             # 'controller': request.environ['pylons.routes_dict']['controller'],
             # 'action': request.environ['pylons.routes_dict']['action'],
         },
         'pyramid_dispatch': {
 
         },
         'extra': {'plugins': {}}
     }
     # END CONFIG VARS
 
     # TODO: This dosn't work when called from pylons compatibility tween.
     # Fix this and remove it from base controller.
     # context.repo_name = get_repo_slug(request)  # can be empty
 
+    diffmode = 'sideside'
+    if request.GET.get('diffmode'):
+        if request.GET['diffmode'] == 'unified':
+            diffmode = 'unified'
+    elif request.session.get('diffmode'):
+        diffmode = request.session['diffmode']
+
+    context.diffmode = diffmode
+
+    if request.session.get('diffmode') != diffmode:
+        request.session['diffmode'] = diffmode
+
     context.csrf_token = auth.get_csrf_token()
     context.backends = rhodecode.BACKENDS.keys()
     context.backends.sort()
     context.unread_notifications = NotificationModel().get_unread_cnt_for_user(
         context.rhodecode_user.user_id)
 
     context.pyramid_request = pyramid.threadlocal.get_current_request()
 
 
 def get_auth_user(environ):
     ip_addr = get_ip_addr(environ)
     # make sure that we update permissions each time we call controller
     _auth_token = (request.GET.get('auth_token', '') or
                    request.GET.get('api_key', ''))
 
     if _auth_token:
         # when using API_KEY we are sure user exists.
         auth_user = AuthUser(api_key=_auth_token, ip_addr=ip_addr)
         authenticated = False
     else:
         cookie_store = CookieStoreWrapper(session.get('rhodecode_user'))
         try:
             auth_user = AuthUser(user_id=cookie_store.get('user_id', None),
                                  ip_addr=ip_addr)
         except UserCreationError as e:
             h.flash(e, 'error')
             # container auth or other auth functions that create users
             # on the fly can throw this exception signaling that there's
             # issue with user creation, explanation should be provided
             # in Exception itself. We then create a simple blank
             # AuthUser
             auth_user = AuthUser(ip_addr=ip_addr)
 
         if password_changed(auth_user, session):
             session.invalidate()
             cookie_store = CookieStoreWrapper(
                 session.get('rhodecode_user'))
             auth_user = AuthUser(ip_addr=ip_addr)
 
         authenticated = cookie_store.get('is_authenticated')
 
     if not auth_user.is_authenticated and auth_user.is_user_object:
         # user is not authenticated and not empty
         auth_user.set_authenticated(authenticated)
 
     return auth_user
 
 
 class BaseController(WSGIController):
 
     def __before__(self):
         """
         __before__ is called before controller methods and after __call__
         """
         # on each call propagate settings calls into global settings.
         set_rhodecode_config(config)
         attach_context_attributes(c, request)
 
         # TODO: Remove this when fixed in attach_context_attributes()
         c.repo_name = get_repo_slug(request)  # can be empty
 
         self.cut_off_limit_diff = safe_int(config.get('cut_off_limit_diff'))
         self.cut_off_limit_file = safe_int(config.get('cut_off_limit_file'))
         self.sa = meta.Session
         self.scm_model = ScmModel(self.sa)
 
         default_lang = c.language
         user_lang = c.language
         try:
             user_obj = self._rhodecode_user.get_instance()
             if user_obj:
                 user_lang = user_obj.user_data.get('language')
         except Exception:
             log.exception('Failed to fetch user language for user %s',
                           self._rhodecode_user)
 
         if user_lang and user_lang != default_lang:
             log.debug('set language to %s for user %s', user_lang,
                       self._rhodecode_user)
             translation.set_lang(user_lang)
 
     def _dispatch_redirect(self, with_url, environ, start_response):
         resp = HTTPFound(with_url)
         environ['SCRIPT_NAME'] = ''  # handle prefix middleware
         environ['PATH_INFO'] = with_url
         return resp(environ, start_response)
 
     def __call__(self, environ, start_response):
         """Invoke the Controller"""
         # WSGIController.__call__ dispatches to the Controller method
         # the request is routed to. This routing information is
         # available in environ['pylons.routes_dict']
         from rhodecode.lib import helpers as h
 
         # Provide the Pylons context to Pyramid's debugtoolbar if it asks
         if environ.get('debugtoolbar.wants_pylons_context', False):
             environ['debugtoolbar.pylons_context'] = c._current_obj()
 
         _route_name = '.'.join([environ['pylons.routes_dict']['controller'],
                                 environ['pylons.routes_dict']['action']])
 
         self.rc_config = SettingsModel().get_all_settings(cache=True)
         self.ip_addr = get_ip_addr(environ)
 
         # The rhodecode auth user is looked up and passed through the
         # environ by the pylons compatibility tween in pyramid.
         # So we can just grab it from there.
         auth_user = environ['rc_auth_user']
 
         # set globals for auth user
         request.user = auth_user
         c.rhodecode_user = self._rhodecode_user = auth_user
 
         log.info('IP: %s User: %s accessed %s [%s]' % (
             self.ip_addr, auth_user, safe_unicode(get_access_path(environ)),
             _route_name)
         )
 
         # TODO: Maybe this should be move to pyramid to cover all views.
         # check user attributes for password change flag
         user_obj = auth_user.get_instance()
         if user_obj and user_obj.user_data.get('force_password_change'):
             h.flash('You are required to change your password', 'warning',
                     ignore_duplicate=True)
 
             skip_user_check_urls = [
                 'error.document', 'login.logout', 'login.index',
                 'admin/my_account.my_account_password',
                 'admin/my_account.my_account_password_update'
             ]
             if _route_name not in skip_user_check_urls:
                 return self._dispatch_redirect(
                     url('my_account_password'), environ, start_response)
 
         return WSGIController.__call__(self, environ, start_response)
 
 
 class BaseRepoController(BaseController):
     """
     Base class for controllers responsible for loading all needed data for
     repository loaded items are
 
     c.rhodecode_repo: instance of scm repository
     c.rhodecode_db_repo: instance of db
     c.repository_requirements_missing: shows that repository specific data
         could not be displayed due to the missing requirements
     c.repository_pull_requests: show number of open pull requests
     """
 
     def __before__(self):
         super(BaseRepoController, self).__before__()
         if c.repo_name:  # extracted from routes
             db_repo = Repository.get_by_repo_name(c.repo_name)
             if not db_repo:
                 return
 
             log.debug(
                 'Found repository in database %s with state `%s`',
                 safe_unicode(db_repo), safe_unicode(db_repo.repo_state))
             route = getattr(request.environ.get('routes.route'), 'name', '')
 
             # allow to delete repos that are somehow damages in filesystem
             if route in ['delete_repo']:
                 return
 
             if db_repo.repo_state in [Repository.STATE_PENDING]:
                 if route in ['repo_creating_home']:
                     return
                 check_url = url('repo_creating_home', repo_name=c.repo_name)
                 return redirect(check_url)
 
             self.rhodecode_db_repo = db_repo
 
             missing_requirements = False
             try:
                 self.rhodecode_repo = self.rhodecode_db_repo.scm_instance()
             except RepositoryRequirementError as e:
                 missing_requirements = True
                 self._handle_missing_requirements(e)
 
             if self.rhodecode_repo is None and not missing_requirements:
                 log.error('%s this repository is present in database but it '
                           'cannot be created as an scm instance', c.repo_name)
 
                 h.flash(_(
                     "The repository at %(repo_name)s cannot be located.") %
                     {'repo_name': c.repo_name},
                     category='error', ignore_duplicate=True)
                 redirect(url('home'))
 
             # update last change according to VCS data
             if not missing_requirements:
                 commit = db_repo.get_commit(
                     pre_load=["author", "date", "message", "parents"])
                 db_repo.update_commit_cache(commit)
 
             # Prepare context
             c.rhodecode_db_repo = db_repo
             c.rhodecode_repo = self.rhodecode_repo
             c.repository_requirements_missing = missing_requirements
 
             self._update_global_counters(self.scm_model, db_repo)
 
     def _update_global_counters(self, scm_model, db_repo):
         """
         Base variables that are exposed to every page of repository
         """
         c.repository_pull_requests = scm_model.get_pull_requests(db_repo)
 
     def _handle_missing_requirements(self, error):
         self.rhodecode_repo = None
         log.error(
             'Requirements are missing for repository %s: %s',
             c.repo_name, error.message)
 
         summary_url = url('summary_home', repo_name=c.repo_name)
         statistics_url = url('edit_repo_statistics', repo_name=c.repo_name)
         settings_update_url = url('repo', repo_name=c.repo_name)
         path = request.path
         should_redirect = (
             path not in (summary_url, settings_update_url)
             and '/settings' not in path or path == statistics_url
         )
         if should_redirect:
             redirect(summary_url)

rhodecode/lib/helpers.py

@@ -1,1995 +1,2004 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 Helper functions
 
 Consists of functions to typically be used within templates, but also
 available to Controllers. This module is available to both as 'h'.
 """
 
 import random
 import hashlib
 import StringIO
 import urllib
 import math
 import logging
 import re
 import urlparse
 import time
 import string
 import hashlib
 import pygments
 
 from datetime import datetime
 from functools import partial
 from pygments.formatters.html import HtmlFormatter
 from pygments import highlight as code_highlight
 from pygments.lexers import (
     get_lexer_by_name, get_lexer_for_filename, get_lexer_for_mimetype)
 from pylons import url as pylons_url
 from pylons.i18n.translation import _, ungettext
 from pyramid.threadlocal import get_current_request
 
 from webhelpers.html import literal, HTML, escape
 from webhelpers.html.tools import *
 from webhelpers.html.builder import make_tag
 from webhelpers.html.tags import auto_discovery_link, checkbox, css_classes, \
     end_form, file, form as wh_form, hidden, image, javascript_link, link_to, \
     link_to_if, link_to_unless, ol, required_legend, select, stylesheet_link, \
     submit, text, password, textarea, title, ul, xml_declaration, radio
 from webhelpers.html.tools import auto_link, button_to, highlight, \
     js_obfuscate, mail_to, strip_links, strip_tags, tag_re
 from webhelpers.pylonslib import Flash as _Flash
 from webhelpers.text import chop_at, collapse, convert_accented_entities, \
     convert_misc_entities, lchop, plural, rchop, remove_formatting, \
     replace_whitespace, urlify, truncate, wrap_paragraphs
 from webhelpers.date import time_ago_in_words
 from webhelpers.paginate import Page as _Page
 from webhelpers.html.tags import _set_input_attrs, _set_id_attr, \
     convert_boolean_attrs, NotGiven, _make_safe_id_component
 from webhelpers2.number import format_byte_size
 
 from rhodecode.lib.action_parser import action_parser
 from rhodecode.lib.ext_json import json
 from rhodecode.lib.utils import repo_name_slug, get_custom_lexer
 from rhodecode.lib.utils2 import str2bool, safe_unicode, safe_str, \
     get_commit_safe, datetime_to_time, time_to_datetime, time_to_utcdatetime, \
     AttributeDict, safe_int, md5, md5_safe
 from rhodecode.lib.markup_renderer import MarkupRenderer
 from rhodecode.lib.vcs.exceptions import CommitDoesNotExistError
 from rhodecode.lib.vcs.backends.base import BaseChangeset, EmptyCommit
 from rhodecode.config.conf import DATE_FORMAT, DATETIME_FORMAT
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.db import Permission, User, Repository
 from rhodecode.model.repo_group import RepoGroupModel
 from rhodecode.model.settings import IssueTrackerSettingsModel
 
 log = logging.getLogger(__name__)
 
 
 DEFAULT_USER = User.DEFAULT_USER
 DEFAULT_USER_EMAIL = User.DEFAULT_USER_EMAIL
 
 
 def url(*args, **kw):
     return pylons_url(*args, **kw)
 
 
 def pylons_url_current(*args, **kw):
     """
     This function overrides pylons.url.current() which returns the current
     path so that it will also work from a pyramid only context. This
     should be removed once port to pyramid is complete.
     """
     if not args and not kw:
         request = get_current_request()
         return request.path
     return pylons_url.current(*args, **kw)
 
 url.current = pylons_url_current
 
 
+def url_replace(**qargs):
+    """ Returns the current request url while replacing query string args """
+
+    request = get_current_request()
+    new_args = request.GET.mixed()
+    new_args.update(qargs)
+    return url('', **new_args)
+
+
 def asset(path, ver=None):
     """
     Helper to generate a static asset file path for rhodecode assets
 
     eg. h.asset('images/image.png', ver='3923')
 
     :param path: path of asset
     :param ver: optional version query param to append as ?ver=
     """
     request = get_current_request()
     query = {}
     if ver:
         query = {'ver': ver}
     return request.static_path(
         'rhodecode:public/{}'.format(path), _query=query)
 
 
 default_html_escape_table = {
     ord('&'): u'&amp;',
     ord('<'): u'&lt;',
     ord('>'): u'&gt;',
     ord('"'): u'&quot;',
     ord("'"): u'&#39;',
 }
 
 
 def html_escape(text, html_escape_table=default_html_escape_table):
     """Produce entities within text."""
     return text.translate(html_escape_table)
 
 
 def chop_at_smart(s, sub, inclusive=False, suffix_if_chopped=None):
     """
     Truncate string ``s`` at the first occurrence of ``sub``.
 
     If ``inclusive`` is true, truncate just after ``sub`` rather than at it.
     """
     suffix_if_chopped = suffix_if_chopped or ''
     pos = s.find(sub)
     if pos == -1:
         return s
 
     if inclusive:
         pos += len(sub)
 
     chopped = s[:pos]
     left = s[pos:].strip()
 
     if left and suffix_if_chopped:
         chopped += suffix_if_chopped
 
     return chopped
 
 
 def shorter(text, size=20):
     postfix = '...'
     if len(text) > size:
         return text[:size - len(postfix)] + postfix
     return text
 
 
 def _reset(name, value=None, id=NotGiven, type="reset", **attrs):
     """
     Reset button
     """
     _set_input_attrs(attrs, type, name, value)
     _set_id_attr(attrs, id, name)
     convert_boolean_attrs(attrs, ["disabled"])
     return HTML.input(**attrs)
 
 reset = _reset
 safeid = _make_safe_id_component
 
 
 def branding(name, length=40):
     return truncate(name, length, indicator="")
 
 
 def FID(raw_id, path):
     """
     Creates a unique ID for filenode based on it's hash of path and commit
     it's safe to use in urls
 
     :param raw_id:
     :param path:
     """
 
     return 'c-%s-%s' % (short_id(raw_id), md5_safe(path)[:12])
 
 
 class _GetError(object):
     """Get error from form_errors, and represent it as span wrapped error
     message
 
     :param field_name: field to fetch errors for
     :param form_errors: form errors dict
     """
 
     def __call__(self, field_name, form_errors):
         tmpl = """<span class="error_msg">%s</span>"""
         if form_errors and field_name in form_errors:
             return literal(tmpl % form_errors.get(field_name))
 
 get_error = _GetError()
 
 
 class _ToolTip(object):
 
     def __call__(self, tooltip_title, trim_at=50):
         """
         Special function just to wrap our text into nice formatted
         autowrapped text
 
         :param tooltip_title:
         """
         tooltip_title = escape(tooltip_title)
         tooltip_title = tooltip_title.replace('<', '&lt;').replace('>', '&gt;')
         return tooltip_title
 tooltip = _ToolTip()
 
 
 def files_breadcrumbs(repo_name, commit_id, file_path):
     if isinstance(file_path, str):
         file_path = safe_unicode(file_path)
 
     # TODO: johbo: Is this always a url like path, or is this operating
     # system dependent?
     path_segments = file_path.split('/')
 
     repo_name_html = escape(repo_name)
     if len(path_segments) == 1 and path_segments[0] == '':
         url_segments = [repo_name_html]
     else:
         url_segments = [
             link_to(
                 repo_name_html,
                 url('files_home',
                     repo_name=repo_name,
                     revision=commit_id,
                     f_path=''),
                 class_='pjax-link')]
 
     last_cnt = len(path_segments) - 1
     for cnt, segment in enumerate(path_segments):
         if not segment:
             continue
         segment_html = escape(segment)
 
         if cnt != last_cnt:
             url_segments.append(
                 link_to(
                     segment_html,
                     url('files_home',
                         repo_name=repo_name,
                         revision=commit_id,
                         f_path='/'.join(path_segments[:cnt + 1])),
                     class_='pjax-link'))
         else:
             url_segments.append(segment_html)
 
     return literal('/'.join(url_segments))
 
 
 class CodeHtmlFormatter(HtmlFormatter):
     """
     My code Html Formatter for source codes
     """
 
     def wrap(self, source, outfile):
         return self._wrap_div(self._wrap_pre(self._wrap_code(source)))
 
     def _wrap_code(self, source):
         for cnt, it in enumerate(source):
             i, t = it
             t = '<div id="L%s">%s</div>' % (cnt + 1, t)
             yield i, t
 
     def _wrap_tablelinenos(self, inner):
         dummyoutfile = StringIO.StringIO()
         lncount = 0
         for t, line in inner:
             if t:
                 lncount += 1
             dummyoutfile.write(line)
 
         fl = self.linenostart
         mw = len(str(lncount + fl - 1))
         sp = self.linenospecial
         st = self.linenostep
         la = self.lineanchors
         aln = self.anchorlinenos
         nocls = self.noclasses
         if sp:
             lines = []
 
             for i in range(fl, fl + lncount):
                 if i % st == 0:
                     if i % sp == 0:
                         if aln:
                             lines.append('<a href="#%s%d" class="special">%*d</a>' %
                                          (la, i, mw, i))
                         else:
                             lines.append('<span class="special">%*d</span>' % (mw, i))
                     else:
                         if aln:
                             lines.append('<a href="#%s%d">%*d</a>' % (la, i, mw, i))
                         else:
                             lines.append('%*d' % (mw, i))
                 else:
                     lines.append('')
             ls = '\n'.join(lines)
         else:
             lines = []
             for i in range(fl, fl + lncount):
                 if i % st == 0:
                     if aln:
                         lines.append('<a href="#%s%d">%*d</a>' % (la, i, mw, i))
                     else:
                         lines.append('%*d' % (mw, i))
                 else:
                     lines.append('')
             ls = '\n'.join(lines)
 
         # in case you wonder about the seemingly redundant <div> here: since the
         # content in the other cell also is wrapped in a div, some browsers in
         # some configurations seem to mess up the formatting...
         if nocls:
             yield 0, ('<table class="%stable">' % self.cssclass +
                       '<tr><td><div class="linenodiv" '
                       'style="background-color: #f0f0f0; padding-right: 10px">'
                       '<pre style="line-height: 125%">' +
                       ls + '</pre></div></td><td id="hlcode" class="code">')
         else:
             yield 0, ('<table class="%stable">' % self.cssclass +
                       '<tr><td class="linenos"><div class="linenodiv"><pre>' +
                       ls + '</pre></div></td><td id="hlcode" class="code">')
         yield 0, dummyoutfile.getvalue()
         yield 0, '</td></tr></table>'
 
 
 class SearchContentCodeHtmlFormatter(CodeHtmlFormatter):
     def __init__(self, **kw):
         # only show these line numbers if set
         self.only_lines = kw.pop('only_line_numbers', [])
         self.query_terms = kw.pop('query_terms', [])
         self.max_lines = kw.pop('max_lines', 5)
         self.line_context = kw.pop('line_context', 3)
         self.url = kw.pop('url', None)
 
         super(CodeHtmlFormatter, self).__init__(**kw)
 
     def _wrap_code(self, source):
         for cnt, it in enumerate(source):
             i, t = it
             t = '<pre>%s</pre>' % t
             yield i, t
 
     def _wrap_tablelinenos(self, inner):
         yield 0, '<table class="code-highlight %stable">' % self.cssclass
 
         last_shown_line_number = 0
         current_line_number = 1
 
         for t, line in inner:
             if not t:
                 yield t, line
                 continue
 
             if current_line_number in self.only_lines:
                 if last_shown_line_number + 1 != current_line_number:
                     yield 0, '<tr>'
                     yield 0, '<td class="line">...</td>'
                     yield 0, '<td id="hlcode" class="code"></td>'
                     yield 0, '</tr>'
 
                 yield 0, '<tr>'
                 if self.url:
                     yield 0, '<td class="line"><a href="%s#L%i">%i</a></td>' % (
                         self.url, current_line_number, current_line_number)
                 else:
                     yield 0, '<td class="line"><a href="">%i</a></td>' % (
                         current_line_number)
                 yield 0, '<td id="hlcode" class="code">' + line + '</td>'
                 yield 0, '</tr>'
 
                 last_shown_line_number = current_line_number
 
             current_line_number += 1
 
 
         yield 0, '</table>'
 
 
 def extract_phrases(text_query):
     """
     Extracts phrases from search term string making sure phrases
     contained in double quotes are kept together - and discarding empty values
     or fully whitespace values eg.
 
     'some   text "a phrase" more' => ['some', 'text', 'a phrase', 'more']
 
     """
 
     in_phrase = False
     buf = ''
     phrases = []
     for char in text_query:
         if in_phrase:
             if char == '"': # end phrase
                 phrases.append(buf)
                 buf = ''
                 in_phrase = False
                 continue
             else:
                 buf += char
                 continue
         else:
             if char == '"': # start phrase
                 in_phrase = True
                 phrases.append(buf)
                 buf = ''
                 continue
             elif char == ' ':
                 phrases.append(buf)
                 buf = ''
                 continue
             else:
                 buf += char
 
     phrases.append(buf)
     phrases = [phrase.strip() for phrase in phrases if phrase.strip()]
     return phrases
 
 
 def get_matching_offsets(text, phrases):
     """
     Returns a list of string offsets in `text` that the list of `terms` match
 
     >>> get_matching_offsets('some text here', ['some', 'here'])
     [(0, 4), (10, 14)]
 
     """
     offsets = []
     for phrase in phrases:
         for match in re.finditer(phrase, text):
             offsets.append((match.start(), match.end()))
 
     return offsets
 
 
 def normalize_text_for_matching(x):
     """
     Replaces all non alnum characters to spaces and lower cases the string,
     useful for comparing two text strings without punctuation
     """
     return re.sub(r'[^\w]', ' ', x.lower())
 
 
 def get_matching_line_offsets(lines, terms):
     """ Return a set of `lines` indices (starting from 1) matching a
     text search query, along with `context` lines above/below matching lines
 
     :param lines: list of strings representing lines
     :param terms: search term string to match in lines eg. 'some text'
     :param context: number of lines above/below a matching line to add to result
     :param max_lines: cut off for lines of interest
      eg.
 
     text = '''
     words words words
     words words words
     some text some
     words words words
     words words words
     text here what
     '''
     get_matching_line_offsets(text, 'text', context=1)
     {3: [(5, 9)], 6: [(0, 4)]]
 
     """
     matching_lines = {}
     phrases = [normalize_text_for_matching(phrase)
                for phrase in extract_phrases(terms)]
 
     for line_index, line in enumerate(lines, start=1):
         match_offsets = get_matching_offsets(
             normalize_text_for_matching(line), phrases)
         if match_offsets:
             matching_lines[line_index] = match_offsets
 
     return matching_lines
 
 
 def hsv_to_rgb(h, s, v):
     """ Convert hsv color values to rgb """
 
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)  # XXX assume int() truncates!
     f = (h * 6.0) - i
     p = v * (1.0 - s)
     q = v * (1.0 - s * f)
     t = v * (1.0 - s * (1.0 - f))
     i = i % 6
     if i == 0:
         return v, t, p
     if i == 1:
         return q, v, p
     if i == 2:
         return p, v, t
     if i == 3:
         return p, q, v
     if i == 4:
         return t, p, v
     if i == 5:
         return v, p, q
 
 
 def unique_color_generator(n=10000, saturation=0.10, lightness=0.95):
     """
     Generator for getting n of evenly distributed colors using
     hsv color and golden ratio. It always return same order of colors
 
     :param n: number of colors to generate
     :param saturation: saturation of returned colors
     :param lightness: lightness of returned colors
     :returns: RGB tuple
     """
 
     golden_ratio = 0.618033988749895
     h = 0.22717784590367374
 
     for _ in xrange(n):
         h += golden_ratio
         h %= 1
         HSV_tuple = [h, saturation, lightness]
         RGB_tuple = hsv_to_rgb(*HSV_tuple)
         yield map(lambda x: str(int(x * 256)), RGB_tuple)
 
 
 def color_hasher(n=10000, saturation=0.10, lightness=0.95):
     """
     Returns a function which when called with an argument returns a unique
     color for that argument, eg.
 
     :param n: number of colors to generate
     :param saturation: saturation of returned colors
     :param lightness: lightness of returned colors
     :returns: css RGB string
 
     >>> color_hash = color_hasher()
     >>> color_hash('hello')
     'rgb(34, 12, 59)'
     >>> color_hash('hello')
     'rgb(34, 12, 59)'
     >>> color_hash('other')
     'rgb(90, 224, 159)'
     """
 
     color_dict = {}
     cgenerator = unique_color_generator(
         saturation=saturation, lightness=lightness)
 
     def get_color_string(thing):
         if thing in color_dict:
             col = color_dict[thing]
         else:
             col = color_dict[thing] = cgenerator.next()
         return "rgb(%s)" % (', '.join(col))
 
     return get_color_string
 
 
 def get_lexer_safe(mimetype=None, filepath=None):
     """
     Tries to return a relevant pygments lexer using mimetype/filepath name,
     defaulting to plain text if none could be found
     """
     lexer = None
     try:
         if mimetype:
             lexer = get_lexer_for_mimetype(mimetype)
         if not lexer:
             lexer = get_lexer_for_filename(filepath)
     except pygments.util.ClassNotFound:
         pass
 
     if not lexer:
         lexer = get_lexer_by_name('text')
 
     return lexer
 
 
 def get_lexer_for_filenode(filenode):
     lexer = get_custom_lexer(filenode.extension) or filenode.lexer
     return lexer
 
 
 def pygmentize(filenode, **kwargs):
     """
     pygmentize function using pygments
 
     :param filenode:
     """
     lexer = get_lexer_for_filenode(filenode)
     return literal(code_highlight(filenode.content, lexer,
                                   CodeHtmlFormatter(**kwargs)))
 
 
 def is_following_repo(repo_name, user_id):
     from rhodecode.model.scm import ScmModel
     return ScmModel().is_following_repo(repo_name, user_id)
 
 
 class _Message(object):
     """A message returned by ``Flash.pop_messages()``.
 
     Converting the message to a string returns the message text. Instances
     also have the following attributes:
 
     * ``message``: the message text.
     * ``category``: the category specified when the message was created.
     """
 
     def __init__(self, category, message):
         self.category = category
         self.message = message
 
     def __str__(self):
         return self.message
 
     __unicode__ = __str__
 
     def __html__(self):
         return escape(safe_unicode(self.message))
 
 
 class Flash(_Flash):
 
     def pop_messages(self):
         """Return all accumulated messages and delete them from the session.
 
         The return value is a list of ``Message`` objects.
         """
         from pylons import session
 
         messages = []
 
         # Pop the 'old' pylons flash messages. They are tuples of the form
         # (category, message)
         for cat, msg in session.pop(self.session_key, []):
             messages.append(_Message(cat, msg))
 
         # Pop the 'new' pyramid flash messages for each category as list
         # of strings.
         for cat in self.categories:
             for msg in session.pop_flash(queue=cat):
                 messages.append(_Message(cat, msg))
         # Map messages from the default queue to the 'notice' category.
         for msg in session.pop_flash():
             messages.append(_Message('notice', msg))
 
         session.save()
         return messages
 
     def json_alerts(self):
         payloads = []
         messages = flash.pop_messages()
         if messages:
             for message in messages:
                 subdata = {}
                 if hasattr(message.message, 'rsplit'):
                     flash_data = message.message.rsplit('|DELIM|', 1)
                     org_message = flash_data[0]
                     if len(flash_data) > 1:
                         subdata = json.loads(flash_data[1])
                 else:
                     org_message = message.message
                 payloads.append({
                     'message': {
                         'message': u'{}'.format(org_message),
                         'level': message.category,
                         'force': True,
                         'subdata': subdata
                     }
                 })
         return json.dumps(payloads)
 
 flash = Flash()
 
 #==============================================================================
 # SCM FILTERS available via h.
 #==============================================================================
 from rhodecode.lib.vcs.utils import author_name, author_email
 from rhodecode.lib.utils2 import credentials_filter, age as _age
 from rhodecode.model.db import User, ChangesetStatus
 
 age = _age
 capitalize = lambda x: x.capitalize()
 email = author_email
 short_id = lambda x: x[:12]
 hide_credentials = lambda x: ''.join(credentials_filter(x))
 
 
 def age_component(datetime_iso, value=None, time_is_local=False):
     title = value or format_date(datetime_iso)
 
     # detect if we have a timezone info, otherwise, add it
     if isinstance(datetime_iso, datetime) and not datetime_iso.tzinfo:
         tzinfo = '+00:00'
 
         if time_is_local:
             tzinfo = time.strftime("+%H:%M",
                 time.gmtime(
                     (datetime.now() - datetime.utcnow()).seconds + 1
                 )
             )
 
     return literal(
         '<time class="timeago tooltip" '
         'title="{1}" datetime="{0}{2}">{1}</time>'.format(
             datetime_iso, title, tzinfo))
 
 
 def _shorten_commit_id(commit_id):
     from rhodecode import CONFIG
     def_len = safe_int(CONFIG.get('rhodecode_show_sha_length', 12))
     return commit_id[:def_len]
 
 
 def show_id(commit):
     """
     Configurable function that shows ID
     by default it's r123:fffeeefffeee
 
     :param commit: commit instance
     """
     from rhodecode import CONFIG
     show_idx = str2bool(CONFIG.get('rhodecode_show_revision_number', True))
 
     raw_id = _shorten_commit_id(commit.raw_id)
     if show_idx:
         return 'r%s:%s' % (commit.idx, raw_id)
     else:
         return '%s' % (raw_id, )
 
 
 def format_date(date):
     """
     use a standardized formatting for dates used in RhodeCode
 
     :param date: date/datetime object
     :return: formatted date
     """
 
     if date:
         _fmt = "%a, %d %b %Y %H:%M:%S"
         return safe_unicode(date.strftime(_fmt))
 
     return u""
 
 
 class _RepoChecker(object):
 
     def __init__(self, backend_alias):
         self._backend_alias = backend_alias
 
     def __call__(self, repository):
         if hasattr(repository, 'alias'):
             _type = repository.alias
         elif hasattr(repository, 'repo_type'):
             _type = repository.repo_type
         else:
             _type = repository
         return _type == self._backend_alias
 
 is_git = _RepoChecker('git')
 is_hg = _RepoChecker('hg')
 is_svn = _RepoChecker('svn')
 
 
 def get_repo_type_by_name(repo_name):
     repo = Repository.get_by_repo_name(repo_name)
     return repo.repo_type
 
 
 def is_svn_without_proxy(repository):
     if is_svn(repository):
         from rhodecode.model.settings import VcsSettingsModel
         conf = VcsSettingsModel().get_ui_settings_as_config_obj()
         return not str2bool(conf.get('vcs_svn_proxy', 'http_requests_enabled'))
     return False
 
 
 def discover_user(author):
     """
     Tries to discover RhodeCode User based on the autho string. Author string
     is typically `FirstName LastName <[e-mail]>`
     """
 
     # if author is already an instance use it for extraction
     if isinstance(author, User):
         return author
 
     # Valid email in the attribute passed, see if they're in the system
     _email = author_email(author)
     if _email != '':
         user = User.get_by_email(_email, case_insensitive=True, cache=True)
         if user is not None:
             return user
 
     # Maybe it's a username, we try to extract it and fetch by username ?
     _author = author_name(author)
     user = User.get_by_username(_author, case_insensitive=True, cache=True)
     if user is not None:
         return user
 
     return None
 
 
 def email_or_none(author):
     # extract email from the commit string
     _email = author_email(author)
 
     # If we have an email, use it, otherwise
     # see if it contains a username we can get an email from
     if _email != '':
         return _email
     else:
         user = User.get_by_username(
             author_name(author), case_insensitive=True, cache=True)
 
     if user is not None:
             return user.email
 
     # No valid email, not a valid user in the system, none!
     return None
 
 
 def link_to_user(author, length=0, **kwargs):
     user = discover_user(author)
     # user can be None, but if we have it already it means we can re-use it
     # in the person() function, so we save 1 intensive-query
     if user:
         author = user
 
     display_person = person(author, 'username_or_name_or_email')
     if length:
         display_person = shorter(display_person, length)
 
     if user:
         return link_to(
             escape(display_person),
             url('user_profile', username=user.username),
             **kwargs)
     else:
         return escape(display_person)
 
 
 def person(author, show_attr="username_and_name"):
     user = discover_user(author)
     if user:
         return getattr(user, show_attr)
     else:
         _author = author_name(author)
         _email = email(author)
         return _author or _email
 
 
 def author_string(email):
     if email:
         user = User.get_by_email(email, case_insensitive=True, cache=True)
         if user:
             if user.firstname or user.lastname:
                 return '%s %s &lt;%s&gt;' % (user.firstname, user.lastname, email)
             else:
                 return email
         else:
             return email
     else:
         return None
 
 
 def person_by_id(id_, show_attr="username_and_name"):
     # attr to return from fetched user
     person_getter = lambda usr: getattr(usr, show_attr)
 
     #maybe it's an ID ?
     if str(id_).isdigit() or isinstance(id_, int):
         id_ = int(id_)
         user = User.get(id_)
         if user is not None:
             return person_getter(user)
     return id_
 
 
 def gravatar_with_user(author, show_disabled=False):
     from rhodecode.lib.utils import PartialRenderer
     _render = PartialRenderer('base/base.html')
     return _render('gravatar_with_user', author, show_disabled=show_disabled)
 
 
 def desc_stylize(value):
     """
     converts tags from value into html equivalent
 
     :param value:
     """
     if not value:
         return ''
 
     value = re.sub(r'\[see\ \=\>\ *([a-zA-Z0-9\/\=\?\&\ \:\/\.\-]*)\]',
                    '<div class="metatag" tag="see">see =&gt; \\1 </div>', value)
     value = re.sub(r'\[license\ \=\>\ *([a-zA-Z0-9\/\=\?\&\ \:\/\.\-]*)\]',
                    '<div class="metatag" tag="license"><a href="http:\/\/www.opensource.org/licenses/\\1">\\1</a></div>', value)
     value = re.sub(r'\[(requires|recommends|conflicts|base)\ \=\>\ *([a-zA-Z0-9\-\/]*)\]',
                    '<div class="metatag" tag="\\1">\\1 =&gt; <a href="/\\2">\\2</a></div>', value)
     value = re.sub(r'\[(lang|language)\ \=\>\ *([a-zA-Z\-\/\#\+]*)\]',
                    '<div class="metatag" tag="lang">\\2</div>', value)
     value = re.sub(r'\[([a-z]+)\]',
                    '<div class="metatag" tag="\\1">\\1</div>', value)
 
     return value
 
 
 def escaped_stylize(value):
     """
     converts tags from value into html equivalent, but escaping its value first
     """
     if not value:
         return ''
 
     # Using default webhelper escape method, but has to force it as a
     # plain unicode instead of a markup tag to be used in regex expressions
     value = unicode(escape(safe_unicode(value)))
 
     value = re.sub(r'\[see\ \=\&gt;\ *([a-zA-Z0-9\/\=\?\&amp;\ \:\/\.\-]*)\]',
                    '<div class="metatag" tag="see">see =&gt; \\1 </div>', value)
     value = re.sub(r'\[license\ \=\&gt;\ *([a-zA-Z0-9\/\=\?\&amp;\ \:\/\.\-]*)\]',
                    '<div class="metatag" tag="license"><a href="http:\/\/www.opensource.org/licenses/\\1">\\1</a></div>', value)
     value = re.sub(r'\[(requires|recommends|conflicts|base)\ \=\&gt;\ *([a-zA-Z0-9\-\/]*)\]',
                    '<div class="metatag" tag="\\1">\\1 =&gt; <a href="/\\2">\\2</a></div>', value)
     value = re.sub(r'\[(lang|language)\ \=\&gt;\ *([a-zA-Z\-\/\#\+]*)\]',
                    '<div class="metatag" tag="lang">\\2</div>', value)
     value = re.sub(r'\[([a-z]+)\]',
                    '<div class="metatag" tag="\\1">\\1</div>', value)
 
     return value
 
 
 def bool2icon(value):
     """
     Returns boolean value of a given value, represented as html element with
     classes that will represent icons
 
     :param value: given value to convert to html node
     """
 
     if value:  # does bool conversion
         return HTML.tag('i', class_="icon-true")
     else:  # not true as bool
         return HTML.tag('i', class_="icon-false")
 
 
 #==============================================================================
 # PERMS
 #==============================================================================
 from rhodecode.lib.auth import HasPermissionAny, HasPermissionAll, \
 HasRepoPermissionAny, HasRepoPermissionAll, HasRepoGroupPermissionAll, \
 HasRepoGroupPermissionAny, HasRepoPermissionAnyApi, get_csrf_token, \
 csrf_token_key
 
 
 #==============================================================================
 # GRAVATAR URL
 #==============================================================================
 class InitialsGravatar(object):
     def __init__(self, email_address, first_name, last_name, size=30,
                  background=None, text_color='#fff'):
         self.size = size
         self.first_name = first_name
         self.last_name = last_name
         self.email_address = email_address
         self.background = background or self.str2color(email_address)
         self.text_color = text_color
 
     def get_color_bank(self):
         """
         returns a predefined list of colors that gravatars can use.
         Those are randomized distinct colors that guarantee readability and
         uniqueness.
 
         generated with: http://phrogz.net/css/distinct-colors.html
         """
         return [
             '#bf3030', '#a67f53', '#00ff00', '#5989b3', '#392040', '#d90000',
             '#402910', '#204020', '#79baf2', '#a700b3', '#bf6060', '#7f5320',
             '#008000', '#003059', '#ee00ff', '#ff0000', '#8c4b00', '#007300',
             '#005fb3', '#de73e6', '#ff4040', '#ffaa00', '#3df255', '#203140',
             '#47004d', '#591616', '#664400', '#59b365', '#0d2133', '#83008c',
             '#592d2d', '#bf9f60', '#73e682', '#1d3f73', '#73006b', '#402020',
             '#b2862d', '#397341', '#597db3', '#e600d6', '#a60000', '#736039',
             '#00b318', '#79aaf2', '#330d30', '#ff8080', '#403010', '#16591f',
             '#002459', '#8c4688', '#e50000', '#ffbf40', '#00732e', '#102340',
             '#bf60ac', '#8c4646', '#cc8800', '#00a642', '#1d3473', '#b32d98',
             '#660e00', '#ffd580', '#80ffb2', '#7391e6', '#733967', '#d97b6c',
             '#8c5e00', '#59b389', '#3967e6', '#590047', '#73281d', '#665200',
             '#00e67a', '#2d50b3', '#8c2377', '#734139', '#b2982d', '#16593a',
             '#001859', '#ff00aa', '#a65e53', '#ffcc00', '#0d3321', '#2d3959',
             '#731d56', '#401610', '#4c3d00', '#468c6c', '#002ca6', '#d936a3',
             '#d94c36', '#403920', '#36d9a3', '#0d1733', '#592d4a', '#993626',
             '#cca300', '#00734d', '#46598c', '#8c005e', '#7f1100', '#8c7000',
             '#00a66f', '#7382e6', '#b32d74', '#d9896c', '#ffe680', '#1d7362',
             '#364cd9', '#73003d', '#d93a00', '#998a4d', '#59b3a1', '#5965b3',
             '#e5007a', '#73341d', '#665f00', '#00b38f', '#0018b3', '#59163a',
             '#b2502d', '#bfb960', '#00ffcc', '#23318c', '#a6537f', '#734939',
             '#b2a700', '#104036', '#3d3df2', '#402031', '#e56739', '#736f39',
             '#79f2ea', '#000059', '#401029', '#4c1400', '#ffee00', '#005953',
             '#101040', '#990052', '#402820', '#403d10', '#00ffee', '#0000d9',
             '#ff80c4', '#a66953', '#eeff00', '#00ccbe', '#8080ff', '#e673a1',
             '#a62c00', '#474d00', '#1a3331', '#46468c', '#733950', '#662900',
             '#858c23', '#238c85', '#0f0073', '#b20047', '#d9986c', '#becc00',
             '#396f73', '#281d73', '#ff0066', '#ff6600', '#dee673', '#59adb3',
             '#6559b3', '#590024', '#b2622d', '#98b32d', '#36ced9', '#332d59',
             '#40001a', '#733f1d', '#526600', '#005359', '#242040', '#bf6079',
             '#735039', '#cef23d', '#007780', '#5630bf', '#66001b', '#b24700',
             '#acbf60', '#1d6273', '#25008c', '#731d34', '#a67453', '#50592d',
             '#00ccff', '#6600ff', '#ff0044', '#4c1f00', '#8a994d', '#79daf2',
             '#a173e6', '#d93662', '#402310', '#aaff00', '#2d98b3', '#8c40ff',
             '#592d39', '#ff8c40', '#354020', '#103640', '#1a0040', '#331a20',
             '#331400', '#334d00', '#1d5673', '#583973', '#7f0022', '#4c3626',
             '#88cc00', '#36a3d9', '#3d0073', '#d9364c', '#33241a', '#698c23',
             '#5995b3', '#300059', '#e57382', '#7f3300', '#366600', '#00aaff',
             '#3a1659', '#733941', '#663600', '#74b32d', '#003c59', '#7f53a6',
             '#73000f', '#ff8800', '#baf279', '#79caf2', '#291040', '#a6293a',
             '#b2742d', '#587339', '#0077b3', '#632699', '#400009', '#d9a66c',
             '#294010', '#2d4a59', '#aa00ff', '#4c131b', '#b25f00', '#5ce600',
             '#267399', '#a336d9', '#990014', '#664e33', '#86bf60', '#0088ff',
             '#7700b3', '#593a16', '#073300', '#1d4b73', '#ac60bf', '#e59539',
             '#4f8c46', '#368dd9', '#5c0073'
         ]
 
     def rgb_to_hex_color(self, rgb_tuple):
         """
         Converts an rgb_tuple passed to an hex color.
 
         :param rgb_tuple: tuple with 3 ints represents rgb color space
         """
         return '#' + ("".join(map(chr, rgb_tuple)).encode('hex'))
 
     def email_to_int_list(self, email_str):
         """
         Get every byte of the hex digest value of email and turn it to integer.
         It's going to be always between 0-255
         """
         digest = md5_safe(email_str.lower())
         return [int(digest[i * 2:i * 2 + 2], 16) for i in range(16)]
 
     def pick_color_bank_index(self, email_str, color_bank):
         return self.email_to_int_list(email_str)[0] % len(color_bank)
 
     def str2color(self, email_str):
         """
         Tries to map in a stable algorithm an email to color
 
         :param email_str:
         """
         color_bank = self.get_color_bank()
         # pick position (module it's length so we always find it in the
         # bank even if it's smaller than 256 values
         pos = self.pick_color_bank_index(email_str, color_bank)
         return color_bank[pos]
 
     def normalize_email(self, email_address):
         import unicodedata
         # default host used to fill in the fake/missing email
         default_host = u'localhost'
 
         if not email_address:
             email_address = u'%s@%s' % (User.DEFAULT_USER, default_host)
 
         email_address = safe_unicode(email_address)
 
         if u'@' not in email_address:
             email_address = u'%s@%s' % (email_address, default_host)
 
         if email_address.endswith(u'@'):
             email_address = u'%s%s' % (email_address, default_host)
 
         email_address = unicodedata.normalize('NFKD', email_address)\
             .encode('ascii', 'ignore')
         return email_address
 
     def get_initials(self):
         """
         Returns 2 letter initials calculated based on the input.
         The algorithm picks first given email address, and takes first letter
         of part before @, and then the first letter of server name. In case
         the part before @ is in a format of `somestring.somestring2` it replaces
         the server letter with first letter of somestring2
 
         In case function was initialized with both first and lastname, this
         overrides the extraction from email by first letter of the first and
         last name. We add special logic to that functionality, In case Full name
         is compound, like Guido Von Rossum, we use last part of the last name
         (Von Rossum) picking `R`.
 
         Function also normalizes the non-ascii characters to they ascii
         representation, eg Ą => A
         """
         import unicodedata
         # replace non-ascii to ascii
         first_name = unicodedata.normalize(
             'NFKD', safe_unicode(self.first_name)).encode('ascii', 'ignore')
         last_name = unicodedata.normalize(
             'NFKD', safe_unicode(self.last_name)).encode('ascii', 'ignore')
 
         # do NFKD encoding, and also make sure email has proper format
         email_address = self.normalize_email(self.email_address)
 
         # first push the email initials
         prefix, server = email_address.split('@', 1)
 
         # check if prefix is maybe a 'firstname.lastname' syntax
         _dot_split = prefix.rsplit('.', 1)
         if len(_dot_split) == 2:
             initials = [_dot_split[0][0], _dot_split[1][0]]
         else:
             initials = [prefix[0], server[0]]
 
         # then try to replace either firtname or lastname
         fn_letter = (first_name or " ")[0].strip()
         ln_letter = (last_name.split(' ', 1)[-1] or " ")[0].strip()
 
         if fn_letter:
             initials[0] = fn_letter
 
         if ln_letter:
             initials[1] = ln_letter
 
         return ''.join(initials).upper()
 
     def get_img_data_by_type(self, font_family, img_type):
         default_user = """
         <svg xmlns="http://www.w3.org/2000/svg"
         version="1.1" x="0px" y="0px" width="{size}" height="{size}"
         viewBox="-15 -10 439.165 429.164"
 
         xml:space="preserve"
         style="background:{background};" >
 
         <path d="M204.583,216.671c50.664,0,91.74-48.075,
                  91.74-107.378c0-82.237-41.074-107.377-91.74-107.377
                  c-50.668,0-91.74,25.14-91.74,107.377C112.844,
                  168.596,153.916,216.671,
                  204.583,216.671z" fill="{text_color}"/>
         <path d="M407.164,374.717L360.88,
                  270.454c-2.117-4.771-5.836-8.728-10.465-11.138l-71.83-37.392
                  c-1.584-0.823-3.502-0.663-4.926,0.415c-20.316,
                  15.366-44.203,23.488-69.076,23.488c-24.877,
                  0-48.762-8.122-69.078-23.488
                  c-1.428-1.078-3.346-1.238-4.93-0.415L58.75,
                  259.316c-4.631,2.41-8.346,6.365-10.465,11.138L2.001,374.717
                  c-3.191,7.188-2.537,15.412,1.75,22.005c4.285,
                  6.592,11.537,10.526,19.4,10.526h362.861c7.863,0,15.117-3.936,
                  19.402-10.527 C409.699,390.129,
                  410.355,381.902,407.164,374.717z" fill="{text_color}"/>
         </svg>""".format(
             size=self.size,
             background='#979797',  # @grey4
             text_color=self.text_color,
             font_family=font_family)
 
         return {
             "default_user": default_user
         }[img_type]
 
     def get_img_data(self, svg_type=None):
         """
         generates the svg metadata for image
         """
 
         font_family = ','.join([
             'proximanovaregular',
             'Proxima Nova Regular',
             'Proxima Nova',
             'Arial',
             'Lucida Grande',
             'sans-serif'
             ])
         if svg_type:
             return self.get_img_data_by_type(font_family, svg_type)
 
         initials = self.get_initials()
         img_data = """
         <svg xmlns="http://www.w3.org/2000/svg" pointer-events="none"
              width="{size}" height="{size}"
              style="width: 100%; height: 100%; background-color: {background}"
              viewBox="0 0 {size} {size}">
             <text text-anchor="middle" y="50%" x="50%" dy="0.35em"
                   pointer-events="auto" fill="{text_color}"
                   font-family="{font_family}"
                   style="font-weight: 400; font-size: {f_size}px;">{text}
             </text>
         </svg>""".format(
             size=self.size,
             f_size=self.size/1.85,  # scale the text inside the box nicely
             background=self.background,
             text_color=self.text_color,
             text=initials.upper(),
             font_family=font_family)
 
         return img_data
 
     def generate_svg(self, svg_type=None):
         img_data = self.get_img_data(svg_type)
         return "data:image/svg+xml;base64,%s" % img_data.encode('base64')
 
 
 def initials_gravatar(email_address, first_name, last_name, size=30):
     svg_type = None
     if email_address == User.DEFAULT_USER_EMAIL:
         svg_type = 'default_user'
     klass = InitialsGravatar(email_address, first_name, last_name, size)
     return klass.generate_svg(svg_type=svg_type)
 
 
 def gravatar_url(email_address, size=30):
     # doh, we need to re-import those to mock it later
     from pylons import tmpl_context as c
 
     _use_gravatar = c.visual.use_gravatar
     _gravatar_url = c.visual.gravatar_url or User.DEFAULT_GRAVATAR_URL
 
     email_address = email_address or User.DEFAULT_USER_EMAIL
     if isinstance(email_address, unicode):
         # hashlib crashes on unicode items
         email_address = safe_str(email_address)
 
     # empty email or default user
     if not email_address or email_address == User.DEFAULT_USER_EMAIL:
         return initials_gravatar(User.DEFAULT_USER_EMAIL, '', '', size=size)
 
     if _use_gravatar:
         # TODO: Disuse pyramid thread locals. Think about another solution to
         # get the host and schema here.
         request = get_current_request()
         tmpl = safe_str(_gravatar_url)
         tmpl = tmpl.replace('{email}', email_address)\
                    .replace('{md5email}', md5_safe(email_address.lower())) \
                    .replace('{netloc}', request.host)\
                    .replace('{scheme}', request.scheme)\
                    .replace('{size}', safe_str(size))
         return tmpl
     else:
         return initials_gravatar(email_address, '', '', size=size)
 
 
 class Page(_Page):
     """
     Custom pager to match rendering style with paginator
     """
 
     def _get_pos(self, cur_page, max_page, items):
         edge = (items / 2) + 1
         if (cur_page <= edge):
             radius = max(items / 2, items - cur_page)
         elif (max_page - cur_page) < edge:
             radius = (items - 1) - (max_page - cur_page)
         else:
             radius = items / 2
 
         left = max(1, (cur_page - (radius)))
         right = min(max_page, cur_page + (radius))
         return left, cur_page, right
 
     def _range(self, regexp_match):
         """
         Return range of linked pages (e.g. '1 2 [3] 4 5 6 7 8').
 
         Arguments:
 
         regexp_match
             A "re" (regular expressions) match object containing the
             radius of linked pages around the current page in
             regexp_match.group(1) as a string
 
         This function is supposed to be called as a callable in
         re.sub.
 
         """
         radius = int(regexp_match.group(1))
 
         # Compute the first and last page number within the radius
         # e.g. '1 .. 5 6 [7] 8 9 .. 12'
         # -> leftmost_page  = 5
         # -> rightmost_page = 9
         leftmost_page, _cur, rightmost_page = self._get_pos(self.page,
                                                             self.last_page,
                                                             (radius * 2) + 1)
         nav_items = []
 
         # Create a link to the first page (unless we are on the first page
         # or there would be no need to insert '..' spacers)
         if self.page != self.first_page and self.first_page < leftmost_page:
             nav_items.append(self._pagerlink(self.first_page, self.first_page))
 
         # Insert dots if there are pages between the first page
         # and the currently displayed page range
         if leftmost_page - self.first_page > 1:
             # Wrap in a SPAN tag if nolink_attr is set
             text = '..'
             if self.dotdot_attr:
                 text = HTML.span(c=text, **self.dotdot_attr)
             nav_items.append(text)
 
         for thispage in xrange(leftmost_page, rightmost_page + 1):
             # Hilight the current page number and do not use a link
             if thispage == self.page:
                 text = '%s' % (thispage,)
                 # Wrap in a SPAN tag if nolink_attr is set
                 if self.curpage_attr:
                     text = HTML.span(c=text, **self.curpage_attr)
                 nav_items.append(text)
             # Otherwise create just a link to that page
             else:
                 text = '%s' % (thispage,)
                 nav_items.append(self._pagerlink(thispage, text))
 
         # Insert dots if there are pages between the displayed
         # page numbers and the end of the page range
         if self.last_page - rightmost_page > 1:
             text = '..'
             # Wrap in a SPAN tag if nolink_attr is set
             if self.dotdot_attr:
                 text = HTML.span(c=text, **self.dotdot_attr)
             nav_items.append(text)
 
         # Create a link to the very last page (unless we are on the last
         # page or there would be no need to insert '..' spacers)
         if self.page != self.last_page and rightmost_page < self.last_page:
             nav_items.append(self._pagerlink(self.last_page, self.last_page))
 
         ## prerender links
         #_page_link = url.current()
         #nav_items.append(literal('<link rel="prerender" href="%s?page=%s">' % (_page_link, str(int(self.page)+1))))
         #nav_items.append(literal('<link rel="prefetch" href="%s?page=%s">' % (_page_link, str(int(self.page)+1))))
         return self.separator.join(nav_items)
 
     def pager(self, format='~2~', page_param='page', partial_param='partial',
         show_if_single_page=False, separator=' ', onclick=None,
         symbol_first='<<', symbol_last='>>',
         symbol_previous='<', symbol_next='>',
         link_attr={'class': 'pager_link', 'rel': 'prerender'},
         curpage_attr={'class': 'pager_curpage'},
         dotdot_attr={'class': 'pager_dotdot'}, **kwargs):
 
         self.curpage_attr = curpage_attr
         self.separator = separator
         self.pager_kwargs = kwargs
         self.page_param = page_param
         self.partial_param = partial_param
         self.onclick = onclick
         self.link_attr = link_attr
         self.dotdot_attr = dotdot_attr
 
         # Don't show navigator if there is no more than one page
         if self.page_count == 0 or (self.page_count == 1 and not show_if_single_page):
             return ''
 
         from string import Template
         # Replace ~...~ in token format by range of pages
         result = re.sub(r'~(\d+)~', self._range, format)
 
         # Interpolate '%' variables
         result = Template(result).safe_substitute({
             'first_page': self.first_page,
             'last_page': self.last_page,
             'page': self.page,
             'page_count': self.page_count,
             'items_per_page': self.items_per_page,
             'first_item': self.first_item,
             'last_item': self.last_item,
             'item_count': self.item_count,
             'link_first': self.page > self.first_page and \
                     self._pagerlink(self.first_page, symbol_first) or '',
             'link_last': self.page < self.last_page and \
                     self._pagerlink(self.last_page, symbol_last) or '',
             'link_previous': self.previous_page and \
                     self._pagerlink(self.previous_page, symbol_previous) \
                     or HTML.span(symbol_previous, class_="pg-previous disabled"),
             'link_next': self.next_page and \
                     self._pagerlink(self.next_page, symbol_next) \
                     or HTML.span(symbol_next, class_="pg-next disabled")
         })
 
         return literal(result)
 
 
 #==============================================================================
 # REPO PAGER, PAGER FOR REPOSITORY
 #==============================================================================
 class RepoPage(Page):
 
     def __init__(self, collection, page=1, items_per_page=20,
                  item_count=None, url=None, **kwargs):
 
         """Create a "RepoPage" instance. special pager for paging
         repository
         """
         self._url_generator = url
 
         # Safe the kwargs class-wide so they can be used in the pager() method
         self.kwargs = kwargs
 
         # Save a reference to the collection
         self.original_collection = collection
 
         self.collection = collection
 
         # The self.page is the number of the current page.
         # The first page has the number 1!
         try:
             self.page = int(page)  # make it int() if we get it as a string
         except (ValueError, TypeError):
             self.page = 1
 
         self.items_per_page = items_per_page
 
         # Unless the user tells us how many items the collections has
         # we calculate that ourselves.
         if item_count is not None:
             self.item_count = item_count
         else:
             self.item_count = len(self.collection)
 
         # Compute the number of the first and last available page
         if self.item_count > 0:
             self.first_page = 1
             self.page_count = int(math.ceil(float(self.item_count) /
                                             self.items_per_page))
             self.last_page = self.first_page + self.page_count - 1
 
             # Make sure that the requested page number is the range of
             # valid pages
             if self.page > self.last_page:
                 self.page = self.last_page
             elif self.page < self.first_page:
                 self.page = self.first_page
 
             # Note: the number of items on this page can be less than
             #       items_per_page if the last page is not full
             self.first_item = max(0, (self.item_count) - (self.page *
                                                           items_per_page))
             self.last_item = ((self.item_count - 1) - items_per_page *
                               (self.page - 1))
 
             self.items = list(self.collection[self.first_item:self.last_item + 1])
 
             # Links to previous and next page
             if self.page > self.first_page:
                 self.previous_page = self.page - 1
             else:
                 self.previous_page = None
 
             if self.page < self.last_page:
                 self.next_page = self.page + 1
             else:
                 self.next_page = None
 
         # No items available
         else:
             self.first_page = None
             self.page_count = 0
             self.last_page = None
             self.first_item = None
             self.last_item = None
             self.previous_page = None
             self.next_page = None
             self.items = []
 
         # This is a subclass of the 'list' type. Initialise the list now.
         list.__init__(self, reversed(self.items))
 
 
 def changed_tooltip(nodes):
     """
     Generates a html string for changed nodes in commit page.
     It limits the output to 30 entries
 
     :param nodes: LazyNodesGenerator
     """
     if nodes:
         pref = ': <br/> '
         suf = ''
         if len(nodes) > 30:
             suf = '<br/>' + _(' and %s more') % (len(nodes) - 30)
         return literal(pref + '<br/> '.join([safe_unicode(x.path)
                                              for x in nodes[:30]]) + suf)
     else:
         return ': ' + _('No Files')
 
 
 def breadcrumb_repo_link(repo):
     """
     Makes a breadcrumbs path link to repo
 
     ex::
         group >> subgroup >> repo
 
     :param repo: a Repository instance
     """
 
     path = [
         link_to(group.name, url('repo_group_home', group_name=group.group_name))
         for group in repo.groups_with_parents
     ] + [
         link_to(repo.just_name, url('summary_home', repo_name=repo.repo_name))
     ]
 
     return literal(' &raquo; '.join(path))
 
 
 def format_byte_size_binary(file_size):
     """
     Formats file/folder sizes to standard.
     """
     formatted_size = format_byte_size(file_size, binary=True)
     return formatted_size
 
 
 def fancy_file_stats(stats):
     """
     Displays a fancy two colored bar for number of added/deleted
     lines of code on file
 
     :param stats: two element list of added/deleted lines of code
     """
     from rhodecode.lib.diffs import NEW_FILENODE, DEL_FILENODE, \
         MOD_FILENODE, RENAMED_FILENODE, CHMOD_FILENODE, BIN_FILENODE
 
     def cgen(l_type, a_v, d_v):
         mapping = {'tr': 'top-right-rounded-corner-mid',
                    'tl': 'top-left-rounded-corner-mid',
                    'br': 'bottom-right-rounded-corner-mid',
                    'bl': 'bottom-left-rounded-corner-mid'}
         map_getter = lambda x: mapping[x]
 
         if l_type == 'a' and d_v:
             #case when added and deleted are present
             return ' '.join(map(map_getter, ['tl', 'bl']))
 
         if l_type == 'a' and not d_v:
             return ' '.join(map(map_getter, ['tr', 'br', 'tl', 'bl']))
 
         if l_type == 'd' and a_v:
             return ' '.join(map(map_getter, ['tr', 'br']))
 
         if l_type == 'd' and not a_v:
             return ' '.join(map(map_getter, ['tr', 'br', 'tl', 'bl']))
 
     a, d = stats['added'], stats['deleted']
     width = 100
 
     if stats['binary']:  # binary operations like chmod/rename etc
         lbl = []
         bin_op = 0  # undefined
 
         # prefix with bin for binary files
         if BIN_FILENODE in stats['ops']:
             lbl += ['bin']
 
         if NEW_FILENODE in stats['ops']:
             lbl += [_('new file')]
             bin_op = NEW_FILENODE
         elif MOD_FILENODE in stats['ops']:
             lbl += [_('mod')]
             bin_op = MOD_FILENODE
         elif DEL_FILENODE in stats['ops']:
             lbl += [_('del')]
             bin_op = DEL_FILENODE
         elif RENAMED_FILENODE in stats['ops']:
             lbl += [_('rename')]
             bin_op = RENAMED_FILENODE
 
         # chmod can go with other operations, so we add a + to lbl if needed
         if CHMOD_FILENODE in stats['ops']:
             lbl += [_('chmod')]
             if bin_op == 0:
                 bin_op = CHMOD_FILENODE
 
         lbl = '+'.join(lbl)
         b_a = '<div class="bin bin%s %s" style="width:100%%">%s</div>' \
               % (bin_op, cgen('a', a_v='', d_v=0), lbl)
         b_d = '<div class="bin bin1" style="width:0%%"></div>'
         return literal('<div style="width:%spx">%s%s</div>' % (width, b_a, b_d))
 
     t = stats['added'] + stats['deleted']
     unit = float(width) / (t or 1)
 
     # needs > 9% of width to be visible or 0 to be hidden
     a_p = max(9, unit * a) if a > 0 else 0
     d_p = max(9, unit * d) if d > 0 else 0
     p_sum = a_p + d_p
 
     if p_sum > width:
         #adjust the percentage to be == 100% since we adjusted to 9
         if a_p > d_p:
             a_p = a_p - (p_sum - width)
         else:
             d_p = d_p - (p_sum - width)
 
     a_v = a if a > 0 else ''
     d_v = d if d > 0 else ''
 
     d_a = '<div class="added %s" style="width:%s%%">%s</div>' % (
         cgen('a', a_v, d_v), a_p, a_v
     )
     d_d = '<div class="deleted %s" style="width:%s%%">%s</div>' % (
         cgen('d', a_v, d_v), d_p, d_v
     )
     return literal('<div style="width:%spx">%s%s</div>' % (width, d_a, d_d))
 
 
 def urlify_text(text_, safe=True):
     """
     Extrac urls from text and make html links out of them
 
     :param text_:
     """
 
     url_pat = re.compile(r'''(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@#.&+]'''
                          '''|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)''')
 
     def url_func(match_obj):
         url_full = match_obj.groups()[0]
         return '<a href="%(url)s">%(url)s</a>' % ({'url': url_full})
     _newtext = url_pat.sub(url_func, text_)
     if safe:
         return literal(_newtext)
     return _newtext
 
 
 def urlify_commits(text_, repository):
     """
     Extract commit ids from text and make link from them
 
     :param text_:
     :param repository: repo name to build the URL with
     """
     from pylons import url  # doh, we need to re-import url to mock it later
     URL_PAT = re.compile(r'(^|\s)([0-9a-fA-F]{12,40})($|\s)')
 
     def url_func(match_obj):
         commit_id = match_obj.groups()[1]
         pref = match_obj.groups()[0]
         suf = match_obj.groups()[2]
 
         tmpl = (
             '%(pref)s<a class="%(cls)s" href="%(url)s">'
             '%(commit_id)s</a>%(suf)s'
         )
         return tmpl % {
             'pref': pref,
             'cls': 'revision-link',
             'url': url('changeset_home', repo_name=repository,
                        revision=commit_id, qualified=True),
             'commit_id': commit_id,
             'suf': suf
         }
 
     newtext = URL_PAT.sub(url_func, text_)
 
     return newtext
 
 
 def _process_url_func(match_obj, repo_name, uid, entry,
                       return_raw_data=False):
     pref = ''
     if match_obj.group().startswith(' '):
         pref = ' '
 
     issue_id = ''.join(match_obj.groups())
     tmpl = (
         '%(pref)s<a class="%(cls)s" href="%(url)s">'
         '%(issue-prefix)s%(id-repr)s'
         '</a>')
 
     (repo_name_cleaned,
      parent_group_name) = RepoGroupModel().\
         _get_group_name_and_parent(repo_name)
 
     # variables replacement
     named_vars = {
         'id': issue_id,
         'repo': repo_name,
         'repo_name': repo_name_cleaned,
         'group_name': parent_group_name
     }
     # named regex variables
     named_vars.update(match_obj.groupdict())
     _url = string.Template(entry['url']).safe_substitute(**named_vars)
 
     data = {
         'pref': pref,
         'cls': 'issue-tracker-link',
         'url': _url,
         'id-repr': issue_id,
         'issue-prefix': entry['pref'],
         'serv': entry['url'],
     }
     if return_raw_data:
         return {
             'id': issue_id,
             'url': _url
         }
     return tmpl % data
 
 
 def process_patterns(text_string, repo_name, config=None):
     repo = None
     if repo_name:
         # Retrieving repo_name to avoid invalid repo_name to explode on
         # IssueTrackerSettingsModel but still passing invalid name further down
         repo = Repository.get_by_repo_name(repo_name, cache=True)
 
     settings_model = IssueTrackerSettingsModel(repo=repo)
     active_entries = settings_model.get_settings(cache=True)
 
     issues_data = []
     newtext = text_string
     for uid, entry in active_entries.items():
         log.debug('found issue tracker entry with uid %s' % (uid,))
 
         if not (entry['pat'] and entry['url']):
             log.debug('skipping due to missing data')
             continue
 
         log.debug('issue tracker entry: uid: `%s` PAT:%s URL:%s PREFIX:%s'
                   % (uid, entry['pat'], entry['url'], entry['pref']))
 
         try:
             pattern = re.compile(r'%s' % entry['pat'])
         except re.error:
             log.exception(
                 'issue tracker pattern: `%s` failed to compile',
                 entry['pat'])
             continue
 
         data_func = partial(
             _process_url_func, repo_name=repo_name, entry=entry, uid=uid,
             return_raw_data=True)
 
         for match_obj in pattern.finditer(text_string):
             issues_data.append(data_func(match_obj))
 
         url_func = partial(
             _process_url_func, repo_name=repo_name, entry=entry, uid=uid)
 
         newtext = pattern.sub(url_func, newtext)
         log.debug('processed prefix:uid `%s`' % (uid,))
 
     return newtext, issues_data
 
 
 def urlify_commit_message(commit_text, repository=None):
     """
     Parses given text message and makes proper links.
     issues are linked to given issue-server, and rest is a commit link
 
     :param commit_text:
     :param repository:
     """
     from pylons import url  # doh, we need to re-import url to mock it later
 
     def escaper(string):
         return string.replace('<', '&lt;').replace('>', '&gt;')
 
     newtext = escaper(commit_text)
 
     # extract http/https links and make them real urls
     newtext = urlify_text(newtext, safe=False)
 
     # urlify commits - extract commit ids and make link out of them, if we have
     # the scope of repository present.
     if repository:
         newtext = urlify_commits(newtext, repository)
 
     # process issue tracker patterns
     newtext, issues = process_patterns(newtext, repository or '')
 
     return literal(newtext)
 
 
 def rst(source, mentions=False):
     return literal('<div class="rst-block">%s</div>' %
                    MarkupRenderer.rst(source, mentions=mentions))
 
 
 def markdown(source, mentions=False):
     return literal('<div class="markdown-block">%s</div>' %
                    MarkupRenderer.markdown(source, flavored=True,
                                            mentions=mentions))
 
 def renderer_from_filename(filename, exclude=None):
     return MarkupRenderer.renderer_from_filename(filename, exclude=exclude)
 
 
 def render(source, renderer='rst', mentions=False):
     if renderer == 'rst':
         return rst(source, mentions=mentions)
     if renderer == 'markdown':
         return markdown(source, mentions=mentions)
 
 
 def commit_status(repo, commit_id):
     return ChangesetStatusModel().get_status(repo, commit_id)
 
 
 def commit_status_lbl(commit_status):
     return dict(ChangesetStatus.STATUSES).get(commit_status)
 
 
 def commit_time(repo_name, commit_id):
     repo = Repository.get_by_repo_name(repo_name)
     commit = repo.get_commit(commit_id=commit_id)
     return commit.date
 
 
 def get_permission_name(key):
     return dict(Permission.PERMS).get(key)
 
 
 def journal_filter_help():
     return _(
         'Example filter terms:\n' +
         '     repository:vcs\n' +
         '     username:marcin\n' +
         '     action:*push*\n' +
         '     ip:127.0.0.1\n' +
         '     date:20120101\n' +
         '     date:[20120101100000 TO 20120102]\n' +
         '\n' +
         'Generate wildcards using \'*\' character:\n' +
         '     "repository:vcs*" - search everything starting with \'vcs\'\n' +
         '     "repository:*vcs*" - search for repository containing \'vcs\'\n' +
         '\n' +
         'Optional AND / OR operators in queries\n' +
         '     "repository:vcs OR repository:test"\n' +
         '     "username:test AND repository:test*"\n'
     )
 
 
 def not_mapped_error(repo_name):
     flash(_('%s repository is not mapped to db perhaps'
             ' it was created or renamed from the filesystem'
             ' please run the application again'
             ' in order to rescan repositories') % repo_name, category='error')
 
 
 def ip_range(ip_addr):
     from rhodecode.model.db import UserIpMap
     s, e = UserIpMap._get_ip_range(ip_addr)
     return '%s - %s' % (s, e)
 
 
 def form(url, method='post', needs_csrf_token=True, **attrs):
     """Wrapper around webhelpers.tags.form to prevent CSRF attacks."""
     if method.lower() != 'get' and needs_csrf_token:
         raise Exception(
             'Forms to POST/PUT/DELETE endpoints should have (in general) a ' +
             'CSRF token. If the endpoint does not require such token you can ' +
             'explicitly set the parameter needs_csrf_token to false.')
 
     return wh_form(url, method=method, **attrs)
 
 
 def secure_form(url, method="POST", multipart=False, **attrs):
     """Start a form tag that points the action to an url. This
     form tag will also include the hidden field containing
     the auth token.
 
     The url options should be given either as a string, or as a
     ``url()`` function. The method for the form defaults to POST.
 
     Options:
 
     ``multipart``
         If set to True, the enctype is set to "multipart/form-data".
     ``method``
         The method to use when submitting the form, usually either
         "GET" or "POST". If "PUT", "DELETE", or another verb is used, a
         hidden input with name _method is added to simulate the verb
         over POST.
 
     """
     from webhelpers.pylonslib.secure_form import insecure_form
     form = insecure_form(url, method, multipart, **attrs)
     token = csrf_input()
     return literal("%s\n%s" % (form, token))
 
 def csrf_input():
     return literal(
         '<input type="hidden" id="{}" name="{}" value="{}">'.format(
         csrf_token_key, csrf_token_key, get_csrf_token()))
 
 def dropdownmenu(name, selected, options, enable_filter=False, **attrs):
     select_html = select(name, selected, options, **attrs)
     select2 = """
         <script>
             $(document).ready(function() {
                   $('#%s').select2({
                       containerCssClass: 'drop-menu',
                       dropdownCssClass: 'drop-menu-dropdown',
                       dropdownAutoWidth: true%s
                   });
             });
         </script>
     """
     filter_option = """,
                         minimumResultsForSearch: -1
     """
     input_id = attrs.get('id') or name
     filter_enabled = "" if enable_filter else filter_option
     select_script = literal(select2 % (input_id, filter_enabled))
 
     return literal(select_html+select_script)
 
 
 def get_visual_attr(tmpl_context_var, attr_name):
     """
     A safe way to get a variable from visual variable of template context
 
     :param tmpl_context_var: instance of tmpl_context, usually present as `c`
     :param attr_name: name of the attribute we fetch from the c.visual
     """
     visual = getattr(tmpl_context_var, 'visual', None)
     if not visual:
         return
     else:
         return getattr(visual, attr_name, None)
 
 
 def get_last_path_part(file_node):
     if not file_node.path:
         return u''
 
     path = safe_unicode(file_node.path.split('/')[-1])
     return u'../' + path
 
 
 def route_path(*args, **kwds):
     """
     Wrapper around pyramids `route_path` function. It is used to generate
     URLs from within pylons views or templates. This will be removed when
     pyramid migration if finished.
     """
     req = get_current_request()
     return req.route_path(*args, **kwds)
 
 
 def route_path_or_none(*args, **kwargs):
     try:
         return route_path(*args, **kwargs)
     except KeyError:
         return None
 
 
 def static_url(*args, **kwds):
     """
     Wrapper around pyramids `route_path` function. It is used to generate
     URLs from within pylons views or templates. This will be removed when
     pyramid migration if finished.
     """
     req = get_current_request()
     return req.static_url(*args, **kwds)
 
 
 def resource_path(*args, **kwds):
     """
     Wrapper around pyramids `route_path` function. It is used to generate
     URLs from within pylons views or templates. This will be removed when
     pyramid migration if finished.
     """
     req = get_current_request()
     return req.resource_path(*args, **kwds)

rhodecode/templates/codeblocks/diffs.html

@@ -1,412 +1,404 b''
 <%def name="diff_line_anchor(filename, line, type)"><%
 return '%s_%s_%i' % (h.safeid(filename), type, line)
 %></%def>
 
 <%def name="action_class(action)"><%
     return {
         '-': 'cb-deletion',
         '+': 'cb-addition',
         ' ': 'cb-context',
         }.get(action, 'cb-empty')
 %></%def>
 
 <%def name="op_class(op_id)"><%
     return {
         DEL_FILENODE: 'deletion', # file deleted
         BIN_FILENODE: 'warning' # binary diff hidden
     }.get(op_id, 'addition')
 %></%def>
 
 <%def name="link_for(**kw)"><%
 new_args = request.GET.mixed()
 new_args.update(kw)
 return h.url('', **new_args)
 %></%def>
 
 <%def name="render_diffset(diffset, commit_id=None,
 
     # collapse all file diff entries when there are more than this amount of files in the diff
     collapse_when_files_over=20,
 
     # collapse lines in the diff when more than this amount of lines changed in the file diff
     lines_changed_limit=500,
 
     # add a ruler at to the output
     ruler_at_chars=0,
 )">
 <%
-# TODO: dan: move this to an argument - and set a cookie so that it is saved
-# default option for future requests
-diff_mode = request.GET.get('diffmode', 'sideside')
-if diff_mode not in ('sideside', 'unified'):
-    diff_mode = 'sideside'
-
 collapse_all = len(diffset.files) > collapse_when_files_over
 %>
 
-%if diff_mode == 'sideside':
+%if c.diffmode == 'sideside':
 <style>
 .wrapper {
     max-width: 1600px !important;
 }
 </style>
 %endif
 %if ruler_at_chars:
 <style>
 .diff table.cb .cb-content:after {
     content: "";
     border-left: 1px solid blue;
     position: absolute;
     top: 0;
     height: 18px;
     opacity: .2;
     z-index: 10;
     ## +5 to account for diff action (+/-)
     left: ${ruler_at_chars + 5}ch;
 </style>
 %endif
 % if diffset.limited_diff:
 <div class="alert alert-warning">
     ${_('The requested commit is too big and content was truncated.')} <a href="${link_for(fulldiff=1)}" onclick="return confirm('${_("Showing a big diff might take some time and resources, continue?")}')">${_('Show full diff')}</a>
 </div>
 % endif
 
 <div class="diffset">
     <div class="diffset-heading">
-        %if diffset.files:
         <div class="pull-right">
             <div class="btn-group">
                 <a
-                    class="btn ${diff_mode == 'sideside' and 'btn-primary'} tooltip"
+                  class="btn ${c.diffmode == 'sideside' and 'btn-primary'} tooltip"
                     title="${_('View side by side')}"
-                    href="${link_for(diffmode='sideside')}">
+                  href="${h.url_replace(diffmode='sideside')}">
                     <span>${_('Side by Side')}</span>
                 </a>
                 <a
-                    class="btn ${diff_mode == 'unified' and 'btn-primary'} tooltip"
-                    title="${_('View unified')}" href="${link_for(diffmode='unified')}">
+                  class="btn ${c.diffmode == 'unified' and 'btn-primary'} tooltip"
+                  title="${_('View unified')}" href="${h.url_replace(diffmode='unified')}">
                     <span>${_('Unified')}</span>
                 </a>
             </div>
         </div>
         <div class="pull-left">
             <div class="btn-group">
                 <a
                     class="btn"
                     href="#"
                     onclick="$('input[class=filediff-collapse-state]').prop('checked', false); return false">${_('Expand All')}</a>
                 <a
                     class="btn"
                     href="#"
                     onclick="$('input[class=filediff-collapse-state]').prop('checked', true); return false">${_('Collapse All')}</a>
             </div>
         </div>
-        %endif
         <h2 style="padding: 5px; text-align: center;">
     %if diffset.limited_diff:
         ${ungettext('%(num)s file changed', '%(num)s files changed', diffset.changed_files) % {'num': diffset.changed_files}}
     %else:
         ${ungettext('%(num)s file changed: %(linesadd)s inserted, ''%(linesdel)s deleted',
                     '%(num)s files changed: %(linesadd)s inserted, %(linesdel)s deleted', diffset.changed_files) % {'num': diffset.changed_files, 'linesadd': diffset.lines_added, 'linesdel': diffset.lines_deleted}}
     %endif
         </h2>
     </div>
 
     %if not diffset.files:
         <p class="empty_data">${_('No files')}</p>
     %endif
 
     <div class="filediffs">
     %for i, filediff in enumerate(diffset.files):
     <%
     lines_changed = filediff['patch']['stats']['added'] + filediff['patch']['stats']['deleted']
     over_lines_changed_limit = lines_changed > lines_changed_limit
     %>
         <input ${collapse_all and 'checked' or ''} class="filediff-collapse-state" id="filediff-collapse-${id(filediff)}" type="checkbox">
         <div
             class="filediff"
             data-f-path="${filediff['patch']['filename']}"
             id="a_${h.FID(commit_id or '', filediff['patch']['filename'])}">
             <label for="filediff-collapse-${id(filediff)}" class="filediff-heading">
                 <div class="filediff-collapse-indicator"></div>
                 ${diff_ops(filediff)}
             </label>
             ${diff_menu(filediff)}
-            <table class="cb cb-diff-${diff_mode} code-highlight ${over_lines_changed_limit and 'cb-collapsed' or ''}">
+            <table class="cb cb-diff-${c.diffmode} code-highlight ${over_lines_changed_limit and 'cb-collapsed' or ''}">
         %if not filediff.hunks:
             %for op_id, op_text in filediff['patch']['stats']['ops'].items():
                 <tr>
-                    <td class="cb-text cb-${op_class(op_id)}" ${diff_mode == 'unified' and 'colspan=3' or 'colspan=4'}>
+                    <td class="cb-text cb-${op_class(op_id)}" ${c.diffmode == 'unified' and 'colspan=3' or 'colspan=4'}>
                         %if op_id == DEL_FILENODE:
                         ${_('File was deleted')}
                         %elif op_id == BIN_FILENODE:
                         ${_('Binary file hidden')}
                         %else:
                         ${op_text}
                         %endif
                     </td>
                 </tr>
             %endfor
         %endif
         %if over_lines_changed_limit:
                 <tr class="cb-warning cb-collapser">
-                    <td class="cb-text" ${diff_mode == 'unified' and 'colspan=3' or 'colspan=4'}>
+                    <td class="cb-text" ${c.diffmode == 'unified' and 'colspan=3' or 'colspan=4'}>
                         ${_('This diff has been collapsed as it changes many lines, (%i lines changed)' % lines_changed)}
                         <a href="#" class="cb-expand"
                            onclick="$(this).closest('table').removeClass('cb-collapsed'); return false;">${_('Show them')}
                         </a>
                         <a href="#" class="cb-collapse"
                            onclick="$(this).closest('table').addClass('cb-collapsed'); return false;">${_('Hide them')}
                         </a>
                     </td>
                 </tr>
         %endif
         %if filediff.patch['is_limited_diff']:
                 <tr class="cb-warning cb-collapser">
-                    <td class="cb-text" ${diff_mode == 'unified' and 'colspan=3' or 'colspan=4'}>
+                    <td class="cb-text" ${c.diffmode == 'unified' and 'colspan=3' or 'colspan=4'}>
                         ${_('The requested commit is too big and content was truncated.')} <a href="${link_for(fulldiff=1)}" onclick="return confirm('${_("Showing a big diff might take some time and resources, continue?")}')">${_('Show full diff')}</a>
                     </td>
                 </tr>
         %endif
         %for hunk in filediff.hunks:
                 <tr class="cb-hunk">
-                    <td ${diff_mode == 'unified' and 'colspan=2' or ''}>
+                    <td ${c.diffmode == 'unified' and 'colspan=2' or ''}>
                         ## TODO: dan: add ajax loading of more context here
                         ## <a href="#">
                             <i class="icon-more"></i>
                         ## </a>
                     </td>
-                    <td ${diff_mode == 'sideside' and 'colspan=3' or ''}>
+                    <td ${c.diffmode == 'sideside' and 'colspan=3' or ''}>
                         @@
                         -${hunk.source_start},${hunk.source_length}
                         +${hunk.target_start},${hunk.target_length}
                         ${hunk.section_header}
                     </td>
                 </tr>
-            %if diff_mode == 'unified':
+            %if c.diffmode == 'unified':
                     ${render_hunk_lines_unified(hunk)}
-            %elif diff_mode == 'sideside':
+            %elif c.diffmode == 'sideside':
                     ${render_hunk_lines_sideside(hunk)}
             %else:
                 <tr class="cb-line">
                     <td>unknown diff mode</td>
                 </tr>
             %endif
         %endfor
             </table>
         </div>
     %endfor
     </div>
 </div>
 </%def>
 
 <%def name="diff_ops(filediff)">
 <%
 stats = filediff['patch']['stats']
 from rhodecode.lib.diffs import NEW_FILENODE, DEL_FILENODE, \
     MOD_FILENODE, RENAMED_FILENODE, CHMOD_FILENODE, BIN_FILENODE
 %>
     <span class="pill">
         %if filediff.source_file_path and filediff.target_file_path:
             %if filediff.source_file_path != filediff.target_file_path: # file was renamed
                   <strong>${filediff.target_file_path}</strong> ⬅ <del>${filediff.source_file_path}</del>
             %else:
                 ## file was modified
                 <strong>${filediff.source_file_path}</strong>
             %endif
         %else:
             %if filediff.source_file_path:
                 ## file was deleted
                 <strong>${filediff.source_file_path}</strong>
             %else:
                 ## file was added
                 <strong>${filediff.target_file_path}</strong>
             %endif
         %endif
     </span>
     <span class="pill-group" style="float: left">
         %if filediff.patch['is_limited_diff']:
         <span class="pill tooltip" op="limited" title="The stats for this diff are not complete">limited diff</span>
         %endif
         %if RENAMED_FILENODE in stats['ops']:
         <span class="pill" op="renamed">renamed</span>
         %endif
 
         %if NEW_FILENODE in stats['ops']:
         <span class="pill" op="created">created</span>
             %if filediff['target_mode'].startswith('120'):
         <span class="pill" op="symlink">symlink</span>
             %else:
         <span class="pill" op="mode">${nice_mode(filediff['target_mode'])}</span>
             %endif
         %endif
 
         %if DEL_FILENODE in stats['ops']:
         <span class="pill" op="removed">removed</span>
         %endif
 
         %if CHMOD_FILENODE in stats['ops']:
         <span class="pill" op="mode">
             ${nice_mode(filediff['source_mode'])} ➡ ${nice_mode(filediff['target_mode'])}
         </span>
         %endif
     </span>
 
     <a class="pill filediff-anchor" href="#a_${h.FID(commit_id or '', filediff.patch['filename'])}">¶</a>
 
     <span class="pill-group" style="float: right">
         %if BIN_FILENODE in stats['ops']:
         <span class="pill" op="binary">binary</span>
             %if MOD_FILENODE in stats['ops']:
             <span class="pill" op="modified">modified</span>
             %endif
         %endif
         %if stats['added']:
         <span class="pill" op="added">+${stats['added']}</span>
         %endif
         %if stats['deleted']:
         <span class="pill" op="deleted">-${stats['deleted']}</span>
         %endif
     </span>
 
 </%def>
 
 <%def name="nice_mode(filemode)">
     ${filemode.startswith('100') and filemode[3:] or filemode}
 </%def>
 
 <%def name="diff_menu(filediff)">
     <div class="filediff-menu">
 %if filediff.diffset.source_ref:
     %if filediff.patch['operation'] in ['D', 'M']:
         <a
             class="tooltip"
             href="${h.url('files_home',repo_name=c.repo_name,f_path=filediff.source_file_path,revision=filediff.diffset.source_ref)}"
             title="${h.tooltip(_('Show file at commit: %(commit_id)s') % {'commit_id': filediff.diffset.source_ref[:12]})}"
         >
             ${_('Show file before')}
         </a>
     %else:
         <span
             class="tooltip"
             title="${h.tooltip(_('File no longer present at commit: %(commit_id)s') % {'commit_id': filediff.diffset.source_ref[:12]})}"
         >
             ${_('Show file before')}
         </span>
     %endif
     %if filediff.patch['operation'] in ['A', 'M']:
         <a
             class="tooltip"
             href="${h.url('files_home',repo_name=c.repo_name,f_path=filediff.target_file_path,revision=filediff.diffset.target_ref)}"
             title="${h.tooltip(_('Show file at commit: %(commit_id)s') % {'commit_id': filediff.diffset.target_ref[:12]})}"
         >
             ${_('Show file after')}
         </a>
     %else:
         <span
             class="tooltip"
             title="${h.tooltip(_('File no longer present at commit: %(commit_id)s') % {'commit_id': filediff.diffset.target_ref[:12]})}"
             >
                 ${_('Show file after')}
         </span>
     %endif
         <a
             class="tooltip"
             title="${h.tooltip(_('Raw diff'))}"
             href="${h.url('files_diff_home',repo_name=c.repo_name,f_path=filediff.target_file_path,diff2=filediff.diffset.target_ref,diff1=filediff.diffset.source_ref,diff='raw')}"
         >
             ${_('Raw diff')}
         </a>
         <a
             class="tooltip"
             title="${h.tooltip(_('Download diff'))}"
             href="${h.url('files_diff_home',repo_name=c.repo_name,f_path=filediff.target_file_path,diff2=filediff.diffset.target_ref,diff1=filediff.diffset.source_ref,diff='download')}"
         >
             ${_('Download diff')}
         </a>
 %endif
     </div>
 </%def>
 
 
 <%def name="render_hunk_lines_sideside(hunk)">
     %for i, line in enumerate(hunk.sideside):
     <%
     old_line_anchor, new_line_anchor = None, None
     if line.original.lineno:
         old_line_anchor = diff_line_anchor(hunk.filediff.source_file_path, line.original.lineno, 'o')
     if line.modified.lineno:
         new_line_anchor = diff_line_anchor(hunk.filediff.target_file_path, line.modified.lineno, 'n')
     %>
     <tr class="cb-line">
         <td class="cb-lineno ${action_class(line.original.action)}"
             data-line-number="${line.original.lineno}"
             %if old_line_anchor:
             id="${old_line_anchor}"
             %endif
         >
             %if line.original.lineno:
             <a name="${old_line_anchor}" href="#${old_line_anchor}">${line.original.lineno}</a>
             %endif
         </td>
         <td class="cb-content ${action_class(line.original.action)}"
             data-line-number="o${line.original.lineno}"
             ><span class="cb-code">${line.original.action} ${line.original.content or '' | n}</span>
         </td>
         <td class="cb-lineno ${action_class(line.modified.action)}"
             data-line-number="${line.modified.lineno}"
             %if new_line_anchor:
             id="${new_line_anchor}"
             %endif
             >
             %if line.modified.lineno:
                 <a name="${new_line_anchor}" href="#${new_line_anchor}">${line.modified.lineno}</a>
             %endif
             </td>
         <td class="cb-content ${action_class(line.modified.action)}"
             data-line-number="n${line.modified.lineno}"
             >
             <span class="cb-code">${line.modified.action} ${line.modified.content or '' | n}</span>
         </td>
     </tr>
     %endfor
 </%def>
 
 
 <%def name="render_hunk_lines_unified(hunk)">
     %for old_line_no, new_line_no, action, content in hunk.unified:
     <%
     old_line_anchor, new_line_anchor = None, None
     if old_line_no:
         old_line_anchor = diff_line_anchor(hunk.filediff.source_file_path, old_line_no, 'o')
     if new_line_no:
         new_line_anchor = diff_line_anchor(hunk.filediff.target_file_path, new_line_no, 'n')
     %>
     <tr class="cb-line">
         <td class="cb-lineno ${action_class(action)}"
             data-line-number="${old_line_no}"
             %if old_line_anchor:
             id="${old_line_anchor}"
             %endif
         >
             %if old_line_anchor:
             <a name="${old_line_anchor}" href="#${old_line_anchor}">${old_line_no}</a>
             %endif
         </td>
         <td class="cb-lineno ${action_class(action)}"
             data-line-number="${new_line_no}"
             %if new_line_anchor:
             id="${new_line_anchor}"
             %endif
         >
             %if new_line_anchor:
             <a name="${new_line_anchor}" href="#${new_line_anchor}">${new_line_no}</a>
             %endif
         </td>
         <td class="cb-content ${action_class(action)}"
             data-line-number="${new_line_no and 'n' or 'o'}${new_line_no or old_line_no}"
             ><span class="cb-code">${action} ${content or '' | n}</span>
           </td>
     </tr>
     %endfor
 </%def>