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# -*- coding: utf-8 -*-
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# Copyright (C) 2012-2017 RhodeCode GmbH
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License, version 3
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# (only), as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This program is dual-licensed. If you wish to learn more about the
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# RhodeCode Enterprise Edition, including its added features, Support services,
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# and proprietary license terms, please see https://rhodecode.com/licenses/
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"""
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Compare controller for showing differences between two commits/refs/tags etc.
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"""
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import logging
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from webob.exc import HTTPBadRequest, HTTPNotFound
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from pylons import request, tmpl_context as c, url
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from pylons.controllers.util import redirect
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from pylons.i18n.translation import _
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from rhodecode.controllers.utils import parse_path_ref, get_commit_from_ref_name
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from rhodecode.lib import helpers as h
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from rhodecode.lib import diffs, codeblocks
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from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
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from rhodecode.lib.base import BaseRepoController, render
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from rhodecode.lib.utils import safe_str
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from rhodecode.lib.utils2 import safe_unicode, str2bool
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from rhodecode.lib.vcs.exceptions import (
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EmptyRepositoryError, RepositoryError, RepositoryRequirementError,
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NodeDoesNotExistError)
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from rhodecode.model.db import Repository, ChangesetStatus
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log = logging.getLogger(__name__)
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class CompareController(BaseRepoController):
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def __before__(self):
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super(CompareController, self).__before__()
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def _get_commit_or_redirect(
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self, ref, ref_type, repo, redirect_after=True, partial=False):
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"""
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This is a safe way to get a commit. If an error occurs it
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redirects to a commit with a proper message. If partial is set
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then it does not do redirect raise and throws an exception instead.
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"""
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try:
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return get_commit_from_ref_name(repo, safe_str(ref), ref_type)
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except EmptyRepositoryError:
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if not redirect_after:
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return repo.scm_instance().EMPTY_COMMIT
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h.flash(h.literal(_('There are no commits yet')),
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category='warning')
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redirect(h.route_path('repo_summary', repo_name=repo.repo_name))
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except RepositoryError as e:
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log.exception(safe_str(e))
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h.flash(safe_str(h.escape(e)), category='warning')
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if not partial:
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redirect(h.route_path('repo_summary', repo_name=repo.repo_name))
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raise HTTPBadRequest()
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@LoginRequired()
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@HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
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'repository.admin')
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def index(self, repo_name):
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c.compare_home = True
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c.commit_ranges = []
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c.collapse_all_commits = False
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c.diffset = None
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c.limited_diff = False
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source_repo = c.rhodecode_db_repo.repo_name
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target_repo = request.GET.get('target_repo', source_repo)
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c.source_repo = Repository.get_by_repo_name(source_repo)
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c.target_repo = Repository.get_by_repo_name(target_repo)
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if c.source_repo is None or c.target_repo is None:
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raise HTTPNotFound()
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c.source_ref = c.target_ref = _('Select commit')
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c.source_ref_type = ""
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c.target_ref_type = ""
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c.commit_statuses = ChangesetStatus.STATUSES
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c.preview_mode = False
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c.file_path = None
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return render('compare/compare_diff.mako')
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@LoginRequired()
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@HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
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'repository.admin')
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def compare(self, repo_name, source_ref_type, source_ref,
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target_ref_type, target_ref):
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# source_ref will be evaluated in source_repo
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source_repo_name = c.rhodecode_db_repo.repo_name
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source_path, source_id = parse_path_ref(source_ref)
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# target_ref will be evaluated in target_repo
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target_repo_name = request.GET.get('target_repo', source_repo_name)
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target_path, target_id = parse_path_ref(
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target_ref, default_path=request.GET.get('f_path', ''))
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c.file_path = target_path
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c.commit_statuses = ChangesetStatus.STATUSES
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# if merge is True
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# Show what changes since the shared ancestor commit of target/source
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# the source would get if it was merged with target. Only commits
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# which are in target but not in source will be shown.
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merge = str2bool(request.GET.get('merge'))
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# if merge is False
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# Show a raw diff of source/target refs even if no ancestor exists
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# c.fulldiff disables cut_off_limit
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c.fulldiff = str2bool(request.GET.get('fulldiff'))
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# if partial, returns just compare_commits.html (commits log)
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partial = request.is_xhr
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# swap url for compare_diff page
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c.swap_url = h.url(
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'compare_url',
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repo_name=target_repo_name,
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source_ref_type=target_ref_type,
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source_ref=target_ref,
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target_repo=source_repo_name,
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target_ref_type=source_ref_type,
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target_ref=source_ref,
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merge=merge and '1' or '',
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f_path=target_path)
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source_repo = Repository.get_by_repo_name(source_repo_name)
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target_repo = Repository.get_by_repo_name(target_repo_name)
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if source_repo is None:
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log.error('Could not find the source repo: {}'
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.format(source_repo_name))
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h.flash(_('Could not find the source repo: `{}`')
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.format(h.escape(source_repo_name)), category='error')
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return redirect(url('compare_home', repo_name=c.repo_name))
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if target_repo is None:
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log.error('Could not find the target repo: {}'
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.format(source_repo_name))
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h.flash(_('Could not find the target repo: `{}`')
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.format(h.escape(target_repo_name)), category='error')
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return redirect(url('compare_home', repo_name=c.repo_name))
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source_scm = source_repo.scm_instance()
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target_scm = target_repo.scm_instance()
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source_alias = source_scm.alias
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target_alias = target_scm.alias
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if source_alias != target_alias:
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msg = _('The comparison of two different kinds of remote repos '
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'is not available')
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log.error(msg)
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h.flash(msg, category='error')
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return redirect(url('compare_home', repo_name=c.repo_name))
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source_commit = self._get_commit_or_redirect(
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ref=source_id, ref_type=source_ref_type, repo=source_repo,
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partial=partial)
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target_commit = self._get_commit_or_redirect(
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ref=target_id, ref_type=target_ref_type, repo=target_repo,
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partial=partial)
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c.compare_home = False
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c.source_repo = source_repo
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c.target_repo = target_repo
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c.source_ref = source_ref
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c.target_ref = target_ref
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c.source_ref_type = source_ref_type
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c.target_ref_type = target_ref_type
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pre_load = ["author", "branch", "date", "message"]
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c.ancestor = None
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if c.file_path:
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if source_commit == target_commit:
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c.commit_ranges = []
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else:
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c.commit_ranges = [target_commit]
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else:
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try:
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c.commit_ranges = source_scm.compare(
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source_commit.raw_id, target_commit.raw_id,
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target_scm, merge, pre_load=pre_load)
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if merge:
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c.ancestor = source_scm.get_common_ancestor(
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source_commit.raw_id, target_commit.raw_id, target_scm)
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except RepositoryRequirementError:
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msg = _('Could not compare repos with different '
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'large file settings')
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log.error(msg)
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if partial:
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return msg
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h.flash(msg, category='error')
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return redirect(url('compare_home', repo_name=c.repo_name))
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c.statuses = c.rhodecode_db_repo.statuses(
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[x.raw_id for x in c.commit_ranges])
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# auto collapse if we have more than limit
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collapse_limit = diffs.DiffProcessor._collapse_commits_over
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c.collapse_all_commits = len(c.commit_ranges) > collapse_limit
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if partial: # for PR ajax commits loader
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if not c.ancestor:
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return '' # cannot merge if there is no ancestor
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return render('compare/compare_commits.mako')
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if c.ancestor:
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# case we want a simple diff without incoming commits,
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# previewing what will be merged.
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# Make the diff on target repo (which is known to have target_ref)
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log.debug('Using ancestor %s as source_ref instead of %s'
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% (c.ancestor, source_ref))
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source_repo = target_repo
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source_commit = target_repo.get_commit(commit_id=c.ancestor)
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# diff_limit will cut off the whole diff if the limit is applied
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# otherwise it will just hide the big files from the front-end
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diff_limit = self.cut_off_limit_diff
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file_limit = self.cut_off_limit_file
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log.debug('calculating diff between '
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'source_ref:%s and target_ref:%s for repo `%s`',
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source_commit, target_commit,
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safe_unicode(source_repo.scm_instance().path))
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if source_commit.repository != target_commit.repository:
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msg = _(
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"Repositories unrelated. "
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"Cannot compare commit %(commit1)s from repository %(repo1)s "
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"with commit %(commit2)s from repository %(repo2)s.") % {
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'commit1': h.show_id(source_commit),
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'repo1': source_repo.repo_name,
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'commit2': h.show_id(target_commit),
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'repo2': target_repo.repo_name,
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}
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h.flash(msg, category='error')
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raise HTTPBadRequest()
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txtdiff = source_repo.scm_instance().get_diff(
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commit1=source_commit, commit2=target_commit,
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path=target_path, path1=source_path)
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diff_processor = diffs.DiffProcessor(
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txtdiff, format='newdiff', diff_limit=diff_limit,
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file_limit=file_limit, show_full_diff=c.fulldiff)
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_parsed = diff_processor.prepare()
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def _node_getter(commit):
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""" Returns a function that returns a node for a commit or None """
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def get_node(fname):
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try:
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return commit.get_node(fname)
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except NodeDoesNotExistError:
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return None
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return get_node
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diffset = codeblocks.DiffSet(
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repo_name=source_repo.repo_name,
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source_node_getter=_node_getter(source_commit),
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target_node_getter=_node_getter(target_commit),
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)
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c.diffset = diffset.render_patchset(
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_parsed, source_ref, target_ref)
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c.preview_mode = merge
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c.source_commit = source_commit
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c.target_commit = target_commit
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return render('compare/compare_diff.mako')
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