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annotate rhodecode/controllers/compare.py @ 4038:ed50319aab94

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compare: make __get_cs_or_redirect more exact
author Mads Kiilerich <madski@unity3d.com>
date Wed, 26 Jun 2013 00:13:15 +0200
parents 48142e84bdc8
children b44fabc4377c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: utf-8 -*-
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2 """
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3 rhodecode.controllers.compare
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4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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5
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6 compare controller for pylons showing differences between two
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7 repos, branches, bookmarks or tips
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8
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9 :created_on: May 6, 2012
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10 :author: marcink
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11 :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
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12 :license: GPLv3, see COPYING for more details.
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13 """
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14 # This program is free software: you can redistribute it and/or modify
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15 # it under the terms of the GNU General Public License as published by
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16 # the Free Software Foundation, either version 3 of the License, or
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17 # (at your option) any later version.
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18 #
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19 # This program is distributed in the hope that it will be useful,
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20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 # GNU General Public License for more details.
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23 #
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24 # You should have received a copy of the GNU General Public License
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25 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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26
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27 import logging
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28 import traceback
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29 import re
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30
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31 from webob.exc import HTTPNotFound
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32 from pylons import request, response, session, tmpl_context as c, url
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33 from pylons.controllers.util import abort, redirect
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34 from pylons.i18n.translation import _
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35
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36 from rhodecode.lib.vcs.exceptions import EmptyRepositoryError, RepositoryError
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37 from rhodecode.lib.vcs.utils import safe_str
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38 from rhodecode.lib.vcs.utils.hgcompat import scmutil, unionrepo
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39 from rhodecode.lib import helpers as h
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40 from rhodecode.lib.base import BaseRepoController, render
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41 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
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42 from rhodecode.lib import diffs
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43
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44 from rhodecode.model.db import Repository
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45 from webob.exc import HTTPBadRequest
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46 from rhodecode.lib.diffs import LimitedDiffContainer
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47
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48
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49 log = logging.getLogger(__name__)
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50
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51
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52 class CompareController(BaseRepoController):
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53
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54 def __before__(self):
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55 super(CompareController, self).__before__()
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56
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57 def __get_cs_or_redirect(self, ref, repo, redirect_after=True,
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58 partial=False):
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59 """
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60 Safe way to get changeset if error occur it redirects to changeset with
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61 proper message. If partial is set then don't do redirect raise Exception
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62 instead
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63
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64 :param rev: revision to fetch
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65 :param repo: repo instance
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66 """
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67
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68 rev = ref[1] # default and used for git
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69 if repo.scm_instance.alias == 'hg':
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70 # lookup up the exact node id
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71 _revset_predicates = {
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72 'branch': 'branch',
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73 'book': 'bookmark',
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74 'tag': 'tag',
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75 'rev': 'id',
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76 }
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77 rev_spec = "max(%s(%%s))" % _revset_predicates[ref[0]]
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78 revs = repo.scm_instance._repo.revs(rev_spec, safe_str(ref[1]))
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79 if revs:
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80 rev = revs[-1]
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81 # else: TODO: just report 'not found'
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82
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83 try:
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84 return repo.scm_instance.get_changeset(rev)
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85 except EmptyRepositoryError, e:
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86 if not redirect_after:
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87 return None
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88 h.flash(h.literal(_('There are no changesets yet')),
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89 category='warning')
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90 redirect(url('summary_home', repo_name=repo.repo_name))
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91
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92 except RepositoryError, e:
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93 log.error(traceback.format_exc())
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94 h.flash(str(e), category='warning')
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95 if not partial:
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96 redirect(h.url('summary_home', repo_name=repo.repo_name))
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97 raise HTTPBadRequest()
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98
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99 def _get_changesets(self, alias, org_repo, org_ref, other_repo, other_ref, merge):
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100 """
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101 Returns a list of changesets that can be merged from org_repo@org_ref
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102 to other_repo@other_ref ... and the ancestor that would be used for merge
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103
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104 :param org_repo:
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105 :param org_ref:
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106 :param other_repo:
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107 :param other_ref:
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108 :param tmp:
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109 """
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110
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111 ancestor = None
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112
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113 if alias == 'hg':
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114 # lookup up the exact node id
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115 _revset_predicates = {
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116 'branch': 'branch',
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117 'book': 'bookmark',
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118 'tag': 'tag',
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119 'rev': 'id',
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120 }
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121
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122 org_rev_spec = "max(%s(%%s))" % _revset_predicates[org_ref[0]]
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123 org_revs = org_repo._repo.revs(org_rev_spec, safe_str(org_ref[1]))
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124 org_rev = org_repo._repo[org_revs[-1] if org_revs else -1].hex()
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125
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126 other_revs_spec = "max(%s(%%s))" % _revset_predicates[other_ref[0]]
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127 other_revs = other_repo._repo.revs(other_revs_spec, safe_str(other_ref[1]))
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128 other_rev = other_repo._repo[other_revs[-1] if other_revs else -1].hex()
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129
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130 #case two independent repos
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131 if org_repo != other_repo:
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132 hgrepo = unionrepo.unionrepository(other_repo.baseui,
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133 other_repo.path,
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134 org_repo.path)
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135 # all the changesets we are looking for will be in other_repo,
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136 # so rev numbers from hgrepo can be used in other_repo
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137
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138 #no remote compare do it on the same repository
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139 else:
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140 hgrepo = other_repo._repo
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141
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142 if merge:
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143 revs = hgrepo.revs("ancestors(id(%s)) and not ancestors(id(%s)) and not id(%s)",
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144 other_rev, org_rev, org_rev)
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145
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146 ancestors = hgrepo.revs("ancestor(id(%s), id(%s))", org_rev, other_rev)
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147 if ancestors:
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148 # pick arbitrary ancestor - but there is usually only one
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149 ancestor = hgrepo[ancestors[0]].hex()
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150 else:
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151 # TODO: have both + and - changesets
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152 revs = hgrepo.revs("id(%s) :: id(%s) - id(%s)",
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153 org_rev, other_rev, org_rev)
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154
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155 changesets = [other_repo.get_changeset(rev) for rev in revs]
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156
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157 elif alias == 'git':
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158 if org_repo != other_repo:
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159 raise Exception('Comparing of different GIT repositories is not'
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160 'allowed. Got %s != %s' % (org_repo, other_repo))
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161
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162 so, se = org_repo.run_git_command(
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163 'log --reverse --pretty="format: %%H" -s -p %s..%s'
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164 % (org_ref[1], other_ref[1])
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165 )
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166 changesets = [org_repo.get_changeset(cs)
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167 for cs in re.findall(r'[0-9a-fA-F]{40}', so)]
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168
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169 return changesets, ancestor
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170
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171 @LoginRequired()
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172 @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
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173 'repository.admin')
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174 def index(self, org_ref_type, org_ref, other_ref_type, other_ref):
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175 # org_ref will be evaluated in org_repo
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176 org_repo = c.rhodecode_db_repo.repo_name
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177 org_ref = (org_ref_type, org_ref)
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178 # other_ref will be evaluated in other_repo
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179 other_ref = (other_ref_type, other_ref)
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180 other_repo = request.GET.get('other_repo', org_repo)
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181 # If merge is True:
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182 # Show what org would get if merged with other:
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183 # List changesets that are ancestors of other but not of org.
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184 # New changesets in org is thus ignored.
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185 # Diff will be from common ancestor, and merges of org to other will thus be ignored.
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186 # If merge is False:
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187 # Make a raw diff from org to other, no matter if related or not.
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188 # Changesets in one and not in the other will be ignored
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189 merge = bool(request.GET.get('merge'))
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190 # fulldiff disables cut_off_limit
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191 c.fulldiff = request.GET.get('fulldiff')
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192 # partial uses compare_cs.html template directly
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193 partial = request.environ.get('HTTP_X_PARTIAL_XHR')
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194 # as_form puts hidden input field with changeset revisions
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195 c.as_form = partial and request.GET.get('as_form')
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196 # swap url for compare_diff page - never partial and never as_form
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197 c.swap_url = h.url('compare_url',
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198 repo_name=other_repo,
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199 org_ref_type=other_ref[0], org_ref=other_ref[1],
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200 other_repo=org_repo,
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201 other_ref_type=org_ref[0], other_ref=org_ref[1],
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202 merge=merge or '')
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203
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204 org_repo = Repository.get_by_repo_name(org_repo)
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205 other_repo = Repository.get_by_repo_name(other_repo)
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206
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207 if org_repo is None:
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208 log.error('Could not find org repo %s' % org_repo)
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209 raise HTTPNotFound
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210 if other_repo is None:
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211 log.error('Could not find other repo %s' % other_repo)
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212 raise HTTPNotFound
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diff changeset
213
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214 if org_repo != other_repo and h.is_git(org_repo):
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diff changeset
215 log.error('compare of two remote repos not available for GIT REPOS')
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diff changeset
216 raise HTTPNotFound
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diff changeset
217
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diff changeset
218 if org_repo.scm_instance.alias != other_repo.scm_instance.alias:
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diff changeset
219 log.error('compare of two different kind of remote repos not available')
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220 raise HTTPNotFound
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diff changeset
221
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diff changeset
222 self.__get_cs_or_redirect(ref=org_ref, repo=org_repo, partial=partial)
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223 self.__get_cs_or_redirect(ref=other_ref, repo=other_repo, partial=partial)
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diff changeset
224
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diff changeset
225 c.org_repo = org_repo
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diff changeset
226 c.other_repo = other_repo
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diff changeset
227 c.org_ref = org_ref[1]
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diff changeset
228 c.other_ref = other_ref[1]
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diff changeset
229 c.org_ref_type = org_ref[0]
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diff changeset
230 c.other_ref_type = other_ref[0]
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diff changeset
231
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diff changeset
232 c.cs_ranges, c.ancestor = self._get_changesets(org_repo.scm_instance.alias,
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diff changeset
233 org_repo.scm_instance, org_ref,
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diff changeset
234 other_repo.scm_instance, other_ref,
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diff changeset
235 merge)
2337
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diff changeset
236
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diff changeset
237 c.statuses = c.rhodecode_db_repo.statuses([x.raw_id for x in
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diff changeset
238 c.cs_ranges])
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diff changeset
239 if merge and not c.ancestor:
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diff changeset
240 log.error('Unable to find ancestor revision')
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diff changeset
241
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diff changeset
242 if partial:
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diff changeset
243 return render('compare/compare_cs.html')
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diff changeset
244
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diff changeset
245 if c.ancestor:
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diff changeset
246 assert merge
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diff changeset
247 # case we want a simple diff without incoming changesets,
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248 # previewing what will be merged.
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diff changeset
249 # Make the diff on the other repo (which is known to have other_ref)
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diff changeset
250 log.debug('Using ancestor %s as org_ref instead of %s'
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diff changeset
251 % (c.ancestor, org_ref))
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diff changeset
252 org_ref = ('rev', c.ancestor)
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diff changeset
253 org_repo = other_repo
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diff changeset
254
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diff changeset
255 diff_limit = self.cut_off_limit if not c.fulldiff else None
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diff changeset
256
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diff changeset
257 log.debug('running diff between %s and %s in %s'
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258 % (org_ref, other_ref, org_repo.scm_instance.path))
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259 txtdiff = org_repo.scm_instance.get_diff(rev1=safe_str(org_ref[1]), rev2=safe_str(other_ref[1]))
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260
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261 diff_processor = diffs.DiffProcessor(txtdiff or '', format='gitdiff',
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262 diff_limit=diff_limit)
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263 _parsed = diff_processor.prepare()
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264
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265 c.limited_diff = False
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266 if isinstance(_parsed, LimitedDiffContainer):
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267 c.limited_diff = True
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268
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269 c.files = []
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270 c.changes = {}
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271 c.lines_added = 0
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272 c.lines_deleted = 0
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273 for f in _parsed:
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274 st = f['stats']
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275 if not st['binary']:
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276 c.lines_added += st['added']
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277 c.lines_deleted += st['deleted']
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278 fid = h.FID('', f['filename'])
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279 c.files.append([fid, f['operation'], f['filename'], f['stats']])
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280 htmldiff = diff_processor.as_html(enable_comments=False, parsed_lines=[f])
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281 c.changes[fid] = [f['operation'], f['filename'], htmldiff]
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282
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283 return render('compare/compare_diff.html')