added line context control to diffs

rhodecode/controllers/changeset.py

@@ -1,302 +1,308 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.changeset
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     changeset controller for pylons showoing changes beetween
     revisions
 
     :created_on: Apr 25, 2010
     :author: marcink
     :copyright: (C) 2009-2011 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # 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 General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 import logging
 import traceback
 
 from pylons import tmpl_context as c, url, request, response
 from pylons.i18n.translation import _
 from pylons.controllers.util import redirect
 from pylons.decorators import jsonify
 
 import rhodecode.lib.helpers as h
 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from rhodecode.lib.base import BaseRepoController, render
 from rhodecode.lib.utils import EmptyChangeset
 from rhodecode.lib.compat import OrderedDict
 from rhodecode.lib import diffs
 from rhodecode.model.db import ChangesetComment
 from rhodecode.model.comment import ChangesetCommentsModel
 
 from vcs.exceptions import RepositoryError, ChangesetError, \
     ChangesetDoesNotExistError
 from vcs.nodes import FileNode
 from webob.exc import HTTPForbidden
 from rhodecode.model.meta import Session
 
 log = logging.getLogger(__name__)
 
 
 class ChangesetController(BaseRepoController):
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def __before__(self):
         super(ChangesetController, self).__before__()
         c.affected_files_cut_off = 60
 
     def index(self, revision):
         ignore_whitespace = request.GET.get('ignorews') == '1'
+        line_context = request.GET.get('context', 3)
         def wrap_to_table(str):
 
             return '''<table class="code-difftable">
                         <tr class="line">
                         <td class="lineno new"></td>
                         <td class="code"><pre>%s</pre></td>
                         </tr>
                       </table>''' % str
 
         #get ranges of revisions if preset
         rev_range = revision.split('...')[:2]
 
         try:
             if len(rev_range) == 2:
                 rev_start = rev_range[0]
                 rev_end = rev_range[1]
                 rev_ranges = c.rhodecode_repo.get_changesets(start=rev_start,
                                                             end=rev_end)
             else:
                 rev_ranges = [c.rhodecode_repo.get_changeset(revision)]
 
             c.cs_ranges = list(rev_ranges)
             if not c.cs_ranges:
                 raise RepositoryError('Changeset range returned empty result')
 
         except (RepositoryError, ChangesetDoesNotExistError, Exception), e:
             log.error(traceback.format_exc())
             h.flash(str(e), category='warning')
             return redirect(url('home'))
 
         c.changes = OrderedDict()
         c.sum_added = 0
         c.sum_removed = 0
         c.lines_added = 0
         c.lines_deleted = 0
         c.cut_off = False  # defines if cut off limit is reached
 
         c.comments = []
         c.inline_comments = []
         c.inline_cnt = 0
         # Iterate over ranges (default changeset view is always one changeset)
         for changeset in c.cs_ranges:
             c.comments.extend(ChangesetCommentsModel()\
                               .get_comments(c.rhodecode_db_repo.repo_id,
                                             changeset.raw_id))
             inlines = ChangesetCommentsModel()\
                         .get_inline_comments(c.rhodecode_db_repo.repo_id,
                                              changeset.raw_id)
             c.inline_comments.extend(inlines)
             c.changes[changeset.raw_id] = []
             try:
                 changeset_parent = changeset.parents[0]
             except IndexError:
                 changeset_parent = None
 
             #==================================================================
             # ADDED FILES
             #==================================================================
             for node in changeset.added:
 
                 filenode_old = FileNode(node.path, '', EmptyChangeset())
                 if filenode_old.is_binary or node.is_binary:
                     diff = wrap_to_table(_('binary file'))
                     st = (0, 0)
                 else:
                     # in this case node.size is good parameter since those are
                     # added nodes and their size defines how many changes were
                     # made
                     c.sum_added += node.size
                     if c.sum_added < self.cut_off_limit:
                         f_gitdiff = diffs.get_gitdiff(filenode_old, node,
-                                           ignore_whitespace=ignore_whitespace)
+                                           ignore_whitespace=ignore_whitespace,
+                                           context=line_context)
                         d = diffs.DiffProcessor(f_gitdiff, format='gitdiff')
 
                         st = d.stat()
                         diff = d.as_html()
 
                     else:
                         diff = wrap_to_table(_('Changeset is to big and '
                                                'was cut off, see raw '
                                                'changeset instead'))
                         c.cut_off = True
                         break
 
                 cs1 = None
                 cs2 = node.last_changeset.raw_id
                 c.lines_added += st[0]
                 c.lines_deleted += st[1]
                 c.changes[changeset.raw_id].append(('added', node, diff,
                                                     cs1, cs2, st))
 
             #==================================================================
             # CHANGED FILES
             #==================================================================
             if not c.cut_off:
                 for node in changeset.changed:
                     try:
                         filenode_old = changeset_parent.get_node(node.path)
                     except ChangesetError:
                         log.warning('Unable to fetch parent node for diff')
                         filenode_old = FileNode(node.path, '',
                                                 EmptyChangeset())
 
                     if filenode_old.is_binary or node.is_binary:
                         diff = wrap_to_table(_('binary file'))
                         st = (0, 0)
                     else:
 
                         if c.sum_removed < self.cut_off_limit:
                             f_gitdiff = diffs.get_gitdiff(filenode_old, node,
-                                           ignore_whitespace=ignore_whitespace)
+                                           ignore_whitespace=ignore_whitespace,
+                                           context=line_context)
                             d = diffs.DiffProcessor(f_gitdiff,
                                                      format='gitdiff')
                             st = d.stat()
                             if (st[0] + st[1]) * 256 > self.cut_off_limit:
                                 diff = wrap_to_table(_('Diff is to big '
                                                        'and was cut off, see '
                                                        'raw diff instead'))
                             else:
                                 diff = d.as_html()
 
                             if diff:
                                 c.sum_removed += len(diff)
                         else:
                             diff = wrap_to_table(_('Changeset is to big and '
                                                    'was cut off, see raw '
                                                    'changeset instead'))
                             c.cut_off = True
                             break
 
                     cs1 = filenode_old.last_changeset.raw_id
                     cs2 = node.last_changeset.raw_id
                     c.lines_added += st[0]
                     c.lines_deleted += st[1]
                     c.changes[changeset.raw_id].append(('changed', node, diff,
                                                         cs1, cs2, st))
 
             #==================================================================
             # REMOVED FILES
             #==================================================================
             if not c.cut_off:
                 for node in changeset.removed:
                     c.changes[changeset.raw_id].append(('removed', node, None,
                                                         None, None, (0, 0)))
 
         # count inline comments
         for path, lines in c.inline_comments:
             for comments in lines.values():
                 c.inline_cnt += len(comments)
 
         if len(c.cs_ranges) == 1:
             c.changeset = c.cs_ranges[0]
             c.changes = c.changes[c.changeset.raw_id]
 
             return render('changeset/changeset.html')
         else:
             return render('changeset/changeset_range.html')
 
     def raw_changeset(self, revision):
 
         method = request.GET.get('diff', 'show')
         ignore_whitespace = request.GET.get('ignorews') == '1'
+        line_context = request.GET.get('context', 3)
         try:
             c.scm_type = c.rhodecode_repo.alias
             c.changeset = c.rhodecode_repo.get_changeset(revision)
         except RepositoryError:
             log.error(traceback.format_exc())
             return redirect(url('home'))
         else:
             try:
                 c.changeset_parent = c.changeset.parents[0]
             except IndexError:
                 c.changeset_parent = None
             c.changes = []
 
             for node in c.changeset.added:
                 filenode_old = FileNode(node.path, '')
                 if filenode_old.is_binary or node.is_binary:
                     diff = _('binary file') + '\n'
                 else:
                     f_gitdiff = diffs.get_gitdiff(filenode_old, node,
-                                           ignore_whitespace=ignore_whitespace)
+                                           ignore_whitespace=ignore_whitespace,
+                                           context=line_context)
                     diff = diffs.DiffProcessor(f_gitdiff,
                                                 format='gitdiff').raw_diff()
 
                 cs1 = None
                 cs2 = node.last_changeset.raw_id
                 c.changes.append(('added', node, diff, cs1, cs2))
 
             for node in c.changeset.changed:
                 filenode_old = c.changeset_parent.get_node(node.path)
                 if filenode_old.is_binary or node.is_binary:
                     diff = _('binary file')
                 else:
                     f_gitdiff = diffs.get_gitdiff(filenode_old, node,
-                                           ignore_whitespace=ignore_whitespace)
+                                           ignore_whitespace=ignore_whitespace,
+                                           context=line_context)
                     diff = diffs.DiffProcessor(f_gitdiff,
                                                 format='gitdiff').raw_diff()
 
                 cs1 = filenode_old.last_changeset.raw_id
                 cs2 = node.last_changeset.raw_id
                 c.changes.append(('changed', node, diff, cs1, cs2))
 
         response.content_type = 'text/plain'
 
         if method == 'download':
             response.content_disposition = 'attachment; filename=%s.patch' \
                                             % revision
 
         c.parent_tmpl = ''.join(['# Parent  %s\n' % x.raw_id for x in
                                                  c.changeset.parents])
 
         c.diffs = ''
         for x in c.changes:
             c.diffs += x[2]
 
         return render('changeset/raw_changeset.html')
 
     def comment(self, repo_name, revision):
         ChangesetCommentsModel().create(text=request.POST.get('text'),
                                         repo_id=c.rhodecode_db_repo.repo_id,
                                         user_id=c.rhodecode_user.user_id,
                                         revision=revision,
                                         f_path=request.POST.get('f_path'),
                                         line_no=request.POST.get('line'))
         Session.commit()
         return redirect(h.url('changeset_home', repo_name=repo_name,
                               revision=revision))
 
     @jsonify
     def delete_comment(self, repo_name, comment_id):
         co = ChangesetComment.get(comment_id)
         owner = lambda : co.author.user_id == c.rhodecode_user.user_id
         if h.HasPermissionAny('hg.admin', 'repository.admin')() or owner:
             ChangesetCommentsModel().delete(comment=co)
             Session.commit()
             return True
         else:
             raise HTTPForbidden()
 

rhodecode/controllers/files.py

@@ -1,518 +1,523 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.files
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     Files controller for RhodeCode
 
     :created_on: Apr 21, 2010
     :author: marcink
     :copyright: (C) 2009-2011 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # 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 General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 import logging
 import traceback
 
 from os.path import join as jn
 
 from pylons import request, response, session, tmpl_context as c, url
 from pylons.i18n.translation import _
 from pylons.controllers.util import redirect
 from pylons.decorators import jsonify
 
 from vcs.conf import settings
 from vcs.exceptions import RepositoryError, ChangesetDoesNotExistError, \
     EmptyRepositoryError, ImproperArchiveTypeError, VCSError, NodeAlreadyExistsError
 from vcs.nodes import FileNode, NodeKind
 
 
 from rhodecode.lib import convert_line_endings, detect_mode, safe_str
 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from rhodecode.lib.base import BaseRepoController, render
 from rhodecode.lib.utils import EmptyChangeset
 from rhodecode.lib import diffs
 import rhodecode.lib.helpers as h
 from rhodecode.model.repo import RepoModel
 
 log = logging.getLogger(__name__)
 
 
 class FilesController(BaseRepoController):
 
     @LoginRequired()
     def __before__(self):
         super(FilesController, self).__before__()
         c.cut_off_limit = self.cut_off_limit
 
     def __get_cs_or_redirect(self, rev, repo_name, redirect_after=True):
         """
         Safe way to get changeset if error occur it redirects to tip with
         proper message
 
         :param rev: revision to fetch
         :param repo_name: repo name to redirect after
         """
 
         try:
             return c.rhodecode_repo.get_changeset(rev)
         except EmptyRepositoryError, e:
             if not redirect_after:
                 return None
             url_ = url('files_add_home',
                        repo_name=c.repo_name,
                        revision=0, f_path='')
             add_new = '<a href="%s">[%s]</a>' % (url_, _('add new'))
             h.flash(h.literal(_('There are no files yet %s' % add_new)),
                     category='warning')
             redirect(h.url('summary_home', repo_name=repo_name))
 
         except RepositoryError, e:
             h.flash(str(e), category='warning')
             redirect(h.url('files_home', repo_name=repo_name, revision='tip'))
 
     def __get_filenode_or_redirect(self, repo_name, cs, path):
         """
         Returns file_node, if error occurs or given path is directory,
         it'll redirect to top level path
 
         :param repo_name: repo_name
         :param cs: given changeset
         :param path: path to lookup
         """
 
         try:
             file_node = cs.get_node(path)
             if file_node.is_dir():
                 raise RepositoryError('given path is a directory')
         except RepositoryError, e:
             h.flash(str(e), category='warning')
             redirect(h.url('files_home', repo_name=repo_name,
                            revision=cs.raw_id))
 
         return file_node
 
 
     def __get_paths(self, changeset, starting_path):
         """recursive walk in root dir and return a set of all path in that dir
         based on repository walk function
         """
         _files = list()
         _dirs = list()
 
         try:
             tip = changeset
             for topnode, dirs, files in tip.walk(starting_path):
                 for f in files:
                     _files.append(f.path)
                 for d in dirs:
                     _dirs.append(d.path)
         except RepositoryError, e:
             log.debug(traceback.format_exc())
             pass
         return _dirs, _files
 
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def index(self, repo_name, revision, f_path):
         #reditect to given revision from form if given
         post_revision = request.POST.get('at_rev', None)
         if post_revision:
             cs = self.__get_cs_or_redirect(post_revision, repo_name)
             redirect(url('files_home', repo_name=c.repo_name,
                          revision=cs.raw_id, f_path=f_path))
 
         c.changeset = self.__get_cs_or_redirect(revision, repo_name)
         c.branch = request.GET.get('branch', None)
         c.f_path = f_path
 
         cur_rev = c.changeset.revision
 
         #prev link
         try:
             prev_rev = c.rhodecode_repo.get_changeset(cur_rev).prev(c.branch)
             c.url_prev = url('files_home', repo_name=c.repo_name,
                          revision=prev_rev.raw_id, f_path=f_path)
             if c.branch:
                 c.url_prev += '?branch=%s' % c.branch
         except (ChangesetDoesNotExistError, VCSError):
             c.url_prev = '#'
 
         #next link
         try:
             next_rev = c.rhodecode_repo.get_changeset(cur_rev).next(c.branch)
             c.url_next = url('files_home', repo_name=c.repo_name,
                      revision=next_rev.raw_id, f_path=f_path)
             if c.branch:
                 c.url_next += '?branch=%s' % c.branch
         except (ChangesetDoesNotExistError, VCSError):
             c.url_next = '#'
 
         #files or dirs
         try:
             c.file = c.changeset.get_node(f_path)
 
             if c.file.is_file():
                 c.file_history = self._get_node_history(c.changeset, f_path)
             else:
                 c.file_history = []
         except RepositoryError, e:
             h.flash(str(e), category='warning')
             redirect(h.url('files_home', repo_name=repo_name,
                            revision=revision))
 
         return render('files/files.html')
 
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def rawfile(self, repo_name, revision, f_path):
         cs = self.__get_cs_or_redirect(revision, repo_name)
         file_node = self.__get_filenode_or_redirect(repo_name, cs, f_path)
 
         response.content_disposition = 'attachment; filename=%s' % \
             safe_str(f_path.split(os.sep)[-1])
 
         response.content_type = file_node.mimetype
         return file_node.content
 
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def raw(self, repo_name, revision, f_path):
         cs = self.__get_cs_or_redirect(revision, repo_name)
         file_node = self.__get_filenode_or_redirect(repo_name, cs, f_path)
 
         raw_mimetype_mapping = {
             # map original mimetype to a mimetype used for "show as raw"
             # you can also provide a content-disposition to override the
             # default "attachment" disposition.
             # orig_type: (new_type, new_dispo)
 
             # show images inline:
             'image/x-icon': ('image/x-icon', 'inline'),
             'image/png': ('image/png', 'inline'),
             'image/gif': ('image/gif', 'inline'),
             'image/jpeg': ('image/jpeg', 'inline'),
             'image/svg+xml': ('image/svg+xml', 'inline'),
         }
 
         mimetype = file_node.mimetype
         try:
             mimetype, dispo = raw_mimetype_mapping[mimetype]
         except KeyError:
             # we don't know anything special about this, handle it safely
             if file_node.is_binary:
                 # do same as download raw for binary files
                 mimetype, dispo = 'application/octet-stream', 'attachment'
             else:
                 # do not just use the original mimetype, but force text/plain,
                 # otherwise it would serve text/html and that might be unsafe.
                 # Note: underlying vcs library fakes text/plain mimetype if the
                 # mimetype can not be determined and it thinks it is not
                 # binary.This might lead to erroneous text display in some
                 # cases, but helps in other cases, like with text files
                 # without extension.
                 mimetype, dispo = 'text/plain', 'inline'
 
         if dispo == 'attachment':
             dispo = 'attachment; filename=%s' % \
                         safe_str(f_path.split(os.sep)[-1])
 
         response.content_disposition = dispo
         response.content_type = mimetype
         return file_node.content
 
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def annotate(self, repo_name, revision, f_path):
         c.cs = self.__get_cs_or_redirect(revision, repo_name)
         c.file = self.__get_filenode_or_redirect(repo_name, c.cs, f_path)
 
         c.file_history = self._get_node_history(c.cs, f_path)
         c.f_path = f_path
         return render('files/files_annotate.html')
 
     @HasRepoPermissionAnyDecorator('repository.write', 'repository.admin')
     def edit(self, repo_name, revision, f_path):
         r_post = request.POST
 
         c.cs = self.__get_cs_or_redirect(revision, repo_name)
         c.file = self.__get_filenode_or_redirect(repo_name, c.cs, f_path)
 
         if c.file.is_binary:
             return redirect(url('files_home', repo_name=c.repo_name,
                          revision=c.cs.raw_id, f_path=f_path))
 
         c.f_path = f_path
 
         if r_post:
 
             old_content = c.file.content
             sl = old_content.splitlines(1)
             first_line = sl[0] if sl else ''
             # modes:  0 - Unix, 1 - Mac, 2 - DOS
             mode = detect_mode(first_line, 0)
             content = convert_line_endings(r_post.get('content'), mode)
 
             message = r_post.get('message') or (_('Edited %s via RhodeCode')
                                                 % (f_path))
             author = self.rhodecode_user.full_contact
 
             if content == old_content:
                 h.flash(_('No changes'),
                     category='warning')
                 return redirect(url('changeset_home', repo_name=c.repo_name,
                                     revision='tip'))
 
             try:
                 self.scm_model.commit_change(repo=c.rhodecode_repo,
                                              repo_name=repo_name, cs=c.cs,
                                              user=self.rhodecode_user,
                                              author=author, message=message,
                                              content=content, f_path=f_path)
                 h.flash(_('Successfully committed to %s' % f_path),
                         category='success')
 
             except Exception:
                 log.error(traceback.format_exc())
                 h.flash(_('Error occurred during commit'), category='error')
             return redirect(url('changeset_home',
                                 repo_name=c.repo_name, revision='tip'))
 
         return render('files/files_edit.html')
 
     @HasRepoPermissionAnyDecorator('repository.write', 'repository.admin')
     def add(self, repo_name, revision, f_path):
         r_post = request.POST
         c.cs = self.__get_cs_or_redirect(revision, repo_name,
                                          redirect_after=False)
         if c.cs is None:
             c.cs = EmptyChangeset(alias=c.rhodecode_repo.alias)
 
         c.f_path = f_path
 
         if r_post:
             unix_mode = 0
             content = convert_line_endings(r_post.get('content'), unix_mode)
 
             message = r_post.get('message') or (_('Added %s via RhodeCode')
                                                 % (f_path))
             location = r_post.get('location')
             filename = r_post.get('filename')
             file_obj = r_post.get('upload_file', None)
 
             if file_obj is not None and hasattr(file_obj, 'filename'):
                 filename = file_obj.filename
                 content = file_obj.file
 
             node_path = os.path.join(location, filename)
             author = self.rhodecode_user.full_contact
 
             if not content:
                 h.flash(_('No content'), category='warning')
                 return redirect(url('changeset_home', repo_name=c.repo_name,
                                     revision='tip'))
             if not filename:
                 h.flash(_('No filename'), category='warning')
                 return redirect(url('changeset_home', repo_name=c.repo_name,
                                     revision='tip'))
 
             try:
                 self.scm_model.create_node(repo=c.rhodecode_repo,
                                              repo_name=repo_name, cs=c.cs,
                                              user=self.rhodecode_user,
                                              author=author, message=message,
                                              content=content, f_path=node_path)
                 h.flash(_('Successfully committed to %s' % node_path),
                         category='success')
             except NodeAlreadyExistsError, e:
                 h.flash(_(e), category='error')
             except Exception:
                 log.error(traceback.format_exc())
                 h.flash(_('Error occurred during commit'), category='error')
             return redirect(url('changeset_home',
                                 repo_name=c.repo_name, revision='tip'))
 
         return render('files/files_add.html')
 
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def archivefile(self, repo_name, fname):
 
         fileformat = None
         revision = None
         ext = None
         subrepos = request.GET.get('subrepos') == 'true'
 
         for a_type, ext_data in settings.ARCHIVE_SPECS.items():
             archive_spec = fname.split(ext_data[1])
             if len(archive_spec) == 2 and archive_spec[1] == '':
                 fileformat = a_type or ext_data[1]
                 revision = archive_spec[0]
                 ext = ext_data[1]
 
         try:
             dbrepo = RepoModel().get_by_repo_name(repo_name)
             if dbrepo.enable_downloads is False:
                 return _('downloads disabled')
 
             # patch and reset hooks section of UI config to not run any 
             # hooks on fetching archives with subrepos
             for k, v in c.rhodecode_repo._repo.ui.configitems('hooks'):
                 c.rhodecode_repo._repo.ui.setconfig('hooks', k, None)
 
             cs = c.rhodecode_repo.get_changeset(revision)
             content_type = settings.ARCHIVE_SPECS[fileformat][0]
         except ChangesetDoesNotExistError:
             return _('Unknown revision %s') % revision
         except EmptyRepositoryError:
             return _('Empty repository')
         except (ImproperArchiveTypeError, KeyError):
             return _('Unknown archive type')
 
         response.content_type = content_type
         response.content_disposition = 'attachment; filename=%s-%s%s' \
             % (repo_name, revision, ext)
 
         import tempfile
         archive = tempfile.mkstemp()[1]
         t = open(archive, 'wb')
         cs.fill_archive(stream=t, kind=fileformat, subrepos=subrepos)
 
         def get_chunked_archive(archive):
             stream = open(archive, 'rb')
             while True:
                 data = stream.read(4096)
                 if not data:
                     os.remove(archive)
                     break
                 yield data
 
         return get_chunked_archive(archive)
 
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def diff(self, repo_name, f_path):
         ignore_whitespace = request.GET.get('ignorews') == '1'
+        line_context = request.GET.get('context', 3)
         diff1 = request.GET.get('diff1')
         diff2 = request.GET.get('diff2')
         c.action = request.GET.get('diff')
         c.no_changes = diff1 == diff2
         c.f_path = f_path
         c.big_diff = False
 
         try:
             if diff1 not in ['', None, 'None', '0' * 12, '0' * 40]:
                 c.changeset_1 = c.rhodecode_repo.get_changeset(diff1)
                 node1 = c.changeset_1.get_node(f_path)
             else:
                 c.changeset_1 = EmptyChangeset(repo=c.rhodecode_repo)
                 node1 = FileNode('.', '', changeset=c.changeset_1)
 
             if diff2 not in ['', None, 'None', '0' * 12, '0' * 40]:
                 c.changeset_2 = c.rhodecode_repo.get_changeset(diff2)
                 node2 = c.changeset_2.get_node(f_path)
             else:
                 c.changeset_2 = EmptyChangeset(repo=c.rhodecode_repo)
                 node2 = FileNode('.', '', changeset=c.changeset_2)
         except RepositoryError:
             return redirect(url('files_home',
                                 repo_name=c.repo_name, f_path=f_path))
 
         if c.action == 'download':
             _diff = diffs.get_gitdiff(node1, node2,
-                                       ignore_whitespace=ignore_whitespace)
+                                      ignore_whitespace=ignore_whitespace,
+                                      context=line_context)
             diff = diffs.DiffProcessor(_diff,format='gitdiff')
 
             diff_name = '%s_vs_%s.diff' % (diff1, diff2)
             response.content_type = 'text/plain'
             response.content_disposition = 'attachment; filename=%s' \
                                                     % diff_name
             return diff.raw_diff()
 
         elif c.action == 'raw':
             _diff = diffs.get_gitdiff(node1, node2,
-                                       ignore_whitespace=ignore_whitespace)
+                                      ignore_whitespace=ignore_whitespace,
+                                      context=line_context)
             diff = diffs.DiffProcessor(_diff,format='gitdiff')
             response.content_type = 'text/plain'
             return diff.raw_diff()
 
         elif c.action == 'diff':
             if node1.is_binary or node2.is_binary:
                 c.cur_diff = _('Binary file')
             elif node1.size > self.cut_off_limit or \
                     node2.size > self.cut_off_limit:
                 c.cur_diff = ''
                 c.big_diff = True
             else:
                 _diff = diffs.get_gitdiff(node1, node2,
-                                           ignore_whitespace=ignore_whitespace)
+                                           ignore_whitespace=ignore_whitespace,
+                                           context=line_context)
                 diff = diffs.DiffProcessor(_diff,format='gitdiff')
                 c.cur_diff = diff.as_html()
         else:
 
             #default option
             if node1.is_binary or node2.is_binary:
                 c.cur_diff = _('Binary file')
             elif node1.size > self.cut_off_limit or \
                     node2.size > self.cut_off_limit:
                 c.cur_diff = ''
                 c.big_diff = True
 
             else:
                 _diff = diffs.get_gitdiff(node1, node2,
-                                           ignore_whitespace=ignore_whitespace)
+                                          ignore_whitespace=ignore_whitespace,
+                                          context=line_context)
                 diff = diffs.DiffProcessor(_diff,format='gitdiff')
                 c.cur_diff = diff.as_html()
 
         if not c.cur_diff and not c.big_diff:
             c.no_changes = True
         return render('files/file_diff.html')
 
     def _get_node_history(self, cs, f_path):
         changesets = cs.get_file_history(f_path)
         hist_l = []
 
         changesets_group = ([], _("Changesets"))
         branches_group = ([], _("Branches"))
         tags_group = ([], _("Tags"))
 
         for chs in changesets:
             n_desc = 'r%s:%s' % (chs.revision, chs.short_id)
             changesets_group[0].append((chs.raw_id, n_desc,))
 
         hist_l.append(changesets_group)
 
         for name, chs in c.rhodecode_repo.branches.items():
             #chs = chs.split(':')[-1]
             branches_group[0].append((chs, name),)
         hist_l.append(branches_group)
 
         for name, chs in c.rhodecode_repo.tags.items():
             #chs = chs.split(':')[-1]
             tags_group[0].append((chs, name),)
         hist_l.append(tags_group)
 
         return hist_l
 
     @jsonify
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def nodelist(self, repo_name, revision, f_path):
         if request.environ.get('HTTP_X_PARTIAL_XHR'):
             cs = self.__get_cs_or_redirect(revision, repo_name)
             _d, _f = self.__get_paths(cs, f_path)
             return _d + _f
 

rhodecode/lib/diffs.py

@@ -1,447 +1,447 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.lib.diffs
     ~~~~~~~~~~~~~~~~~~~
 
     Set of diffing helpers, previously part of vcs
     
     
     :created_on: Dec 4, 2011
     :author: marcink
     :copyright: (C) 2009-2011 Marcin Kuzminski <[e-mail]>
     :original copyright: 2007-2008 by Armin Ronacher    
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # 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 General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import re
 import difflib
 
 from itertools import tee, imap
 
 from mercurial.match import match
 
 from vcs.exceptions import VCSError
 from vcs.nodes import FileNode
 
-def get_gitdiff(filenode_old, filenode_new, ignore_whitespace=True):
+def get_gitdiff(filenode_old, filenode_new, ignore_whitespace=True, context=3):
     """
     Returns git style diff between given ``filenode_old`` and ``filenode_new``.
     
     :param ignore_whitespace: ignore whitespaces in diff
     """
 
     for filenode in (filenode_old, filenode_new):
         if not isinstance(filenode, FileNode):
             raise VCSError("Given object should be FileNode object, not %s"
                 % filenode.__class__)
 
     old_raw_id = getattr(filenode_old.changeset, 'raw_id', '0' * 40)
     new_raw_id = getattr(filenode_new.changeset, 'raw_id', '0' * 40)
 
     repo = filenode_new.changeset.repository
     vcs_gitdiff = repo._get_diff(old_raw_id, new_raw_id, filenode_new.path,
-                                 ignore_whitespace)
+                                 ignore_whitespace, context)
 
     return vcs_gitdiff
 
 
 class DiffProcessor(object):
     """
     Give it a unified diff and it returns a list of the files that were
     mentioned in the diff together with a dict of meta information that
     can be used to render it in a HTML template.
     """
     _chunk_re = re.compile(r'@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@(.*)')
 
     def __init__(self, diff, differ='diff', format='udiff'):
         """
         :param diff:   a text in diff format or generator
         :param format: format of diff passed, `udiff` or `gitdiff`
         """
         if isinstance(diff, basestring):
             diff = [diff]
 
         self.__udiff = diff
         self.__format = format
         self.adds = 0
         self.removes = 0
 
         if isinstance(self.__udiff, basestring):
             self.lines = iter(self.__udiff.splitlines(1))
 
         elif self.__format == 'gitdiff':
             udiff_copy = self.copy_iterator()
             self.lines = imap(self.escaper, self._parse_gitdiff(udiff_copy))
         else:
             udiff_copy = self.copy_iterator()
             self.lines = imap(self.escaper, udiff_copy)
 
         # Select a differ.
         if differ == 'difflib':
             self.differ = self._highlight_line_difflib
         else:
             self.differ = self._highlight_line_udiff
 
     def escaper(self, string):
         return string.replace('<', '&lt;').replace('>', '&gt;')
 
     def copy_iterator(self):
         """
         make a fresh copy of generator, we should not iterate thru
         an original as it's needed for repeating operations on
         this instance of DiffProcessor
         """
         self.__udiff, iterator_copy = tee(self.__udiff)
         return iterator_copy
 
     def _extract_rev(self, line1, line2):
         """
         Extract the filename and revision hint from a line.
         """
 
         try:
             if line1.startswith('--- ') and line2.startswith('+++ '):
                 l1 = line1[4:].split(None, 1)
                 old_filename = l1[0].lstrip('a/') if len(l1) >= 1 else None
                 old_rev = l1[1] if len(l1) == 2 else 'old'
 
                 l2 = line2[4:].split(None, 1)
                 new_filename = l2[0].lstrip('b/') if len(l1) >= 1 else None
                 new_rev = l2[1] if len(l2) == 2 else 'new'
 
                 filename = old_filename if (old_filename !=
                                             'dev/null') else new_filename
 
                 return filename, new_rev, old_rev
         except (ValueError, IndexError):
             pass
 
         return None, None, None
 
     def _parse_gitdiff(self, diffiterator):
         def line_decoder(l):
             if l.startswith('+') and not l.startswith('+++'):
                 self.adds += 1
             elif l.startswith('-') and not l.startswith('---'):
                 self.removes += 1
             return l.decode('utf8', 'replace')
 
         output = list(diffiterator)
         size = len(output)
 
         if size == 2:
             l = []
             l.extend([output[0]])
             l.extend(output[1].splitlines(1))
             return map(line_decoder, l)
         elif size == 1:
             return  map(line_decoder, output[0].splitlines(1))
         elif size == 0:
             return []
 
         raise Exception('wrong size of diff %s' % size)
 
     def _highlight_line_difflib(self, line, next):
         """
         Highlight inline changes in both lines.
         """
 
         if line['action'] == 'del':
             old, new = line, next
         else:
             old, new = next, line
 
         oldwords = re.split(r'(\W)', old['line'])
         newwords = re.split(r'(\W)', new['line'])
 
         sequence = difflib.SequenceMatcher(None, oldwords, newwords)
 
         oldfragments, newfragments = [], []
         for tag, i1, i2, j1, j2 in sequence.get_opcodes():
             oldfrag = ''.join(oldwords[i1:i2])
             newfrag = ''.join(newwords[j1:j2])
             if tag != 'equal':
                 if oldfrag:
                     oldfrag = '<del>%s</del>' % oldfrag
                 if newfrag:
                     newfrag = '<ins>%s</ins>' % newfrag
             oldfragments.append(oldfrag)
             newfragments.append(newfrag)
 
         old['line'] = "".join(oldfragments)
         new['line'] = "".join(newfragments)
 
     def _highlight_line_udiff(self, line, next):
         """
         Highlight inline changes in both lines.
         """
         start = 0
         limit = min(len(line['line']), len(next['line']))
         while start < limit and line['line'][start] == next['line'][start]:
             start += 1
         end = -1
         limit -= start
         while -end <= limit and line['line'][end] == next['line'][end]:
             end -= 1
         end += 1
         if start or end:
             def do(l):
                 last = end + len(l['line'])
                 if l['action'] == 'add':
                     tag = 'ins'
                 else:
                     tag = 'del'
                 l['line'] = '%s<%s>%s</%s>%s' % (
                     l['line'][:start],
                     tag,
                     l['line'][start:last],
                     tag,
                     l['line'][last:]
                 )
             do(line)
             do(next)
 
     def _parse_udiff(self):
         """
         Parse the diff an return data for the template.
         """
         lineiter = self.lines
         files = []
         try:
             line = lineiter.next()
             # skip first context
             skipfirst = True
             while 1:
                 # continue until we found the old file
                 if not line.startswith('--- '):
                     line = lineiter.next()
                     continue
 
                 chunks = []
                 filename, old_rev, new_rev = \
                     self._extract_rev(line, lineiter.next())
                 files.append({
                     'filename':         filename,
                     'old_revision':     old_rev,
                     'new_revision':     new_rev,
                     'chunks':           chunks
                 })
 
                 line = lineiter.next()
                 while line:
                     match = self._chunk_re.match(line)
                     if not match:
                         break
 
                     lines = []
                     chunks.append(lines)
 
                     old_line, old_end, new_line, new_end = \
                         [int(x or 1) for x in match.groups()[:-1]]
                     old_line -= 1
                     new_line -= 1
                     context = len(match.groups()) == 5
                     old_end += old_line
                     new_end += new_line
 
                     if context:
                         if not skipfirst:
                             lines.append({
                                 'old_lineno': '...',
                                 'new_lineno': '...',
                                 'action': 'context',
                                 'line': line,
                             })
                         else:
                             skipfirst = False
 
                     line = lineiter.next()
                     while old_line < old_end or new_line < new_end:
                         if line:
                             command, line = line[0], line[1:]
                         else:
                             command = ' '
                         affects_old = affects_new = False
 
                         # ignore those if we don't expect them
                         if command in '#@':
                             continue
                         elif command == '+':
                             affects_new = True
                             action = 'add'
                         elif command == '-':
                             affects_old = True
                             action = 'del'
                         else:
                             affects_old = affects_new = True
                             action = 'unmod'
 
                         old_line += affects_old
                         new_line += affects_new
                         lines.append({
                             'old_lineno':   affects_old and old_line or '',
                             'new_lineno':   affects_new and new_line or '',
                             'action':       action,
                             'line':         line
                         })
                         line = lineiter.next()
 
         except StopIteration:
             pass
 
         # highlight inline changes
         for file in files:
             for chunk in chunks:
                 lineiter = iter(chunk)
                 #first = True
                 try:
                     while 1:
                         line = lineiter.next()
                         if line['action'] != 'unmod':
                             nextline = lineiter.next()
                             if nextline['action'] == 'unmod' or \
                                nextline['action'] == line['action']:
                                 continue
                             self.differ(line, nextline)
                 except StopIteration:
                     pass
 
         return files
 
     def prepare(self):
         """
         Prepare the passed udiff for HTML rendering. It'l return a list
         of dicts
         """
         return self._parse_udiff()
 
     def _safe_id(self, idstring):
         """Make a string safe for including in an id attribute.
 
         The HTML spec says that id attributes 'must begin with
         a letter ([A-Za-z]) and may be followed by any number
         of letters, digits ([0-9]), hyphens ("-"), underscores
         ("_"), colons (":"), and periods (".")'. These regexps
         are slightly over-zealous, in that they remove colons
         and periods unnecessarily.
 
         Whitespace is transformed into underscores, and then
         anything which is not a hyphen or a character that
         matches \w (alphanumerics and underscore) is removed.
 
         """
         # Transform all whitespace to underscore
         idstring = re.sub(r'\s', "_", '%s' % idstring)
         # Remove everything that is not a hyphen or a member of \w
         idstring = re.sub(r'(?!-)\W', "", idstring).lower()
         return idstring
 
     def raw_diff(self):
         """
         Returns raw string as udiff
         """
         udiff_copy = self.copy_iterator()
         if self.__format == 'gitdiff':
             udiff_copy = self._parse_gitdiff(udiff_copy)
         return u''.join(udiff_copy)
 
     def as_html(self, table_class='code-difftable', line_class='line',
                 new_lineno_class='lineno old', old_lineno_class='lineno new',
                 code_class='code'):
         """
         Return udiff as html table with customized css classes
         """
         def _link_to_if(condition, label, url):
             """
             Generates a link if condition is meet or just the label if not.
             """
 
             if condition:
                 return '''<a href="%(url)s">%(label)s</a>''' % {'url': url,
                                                                 'label': label}
             else:
                 return label
         diff_lines = self.prepare()
         _html_empty = True
         _html = []
         _html.append('''<table class="%(table_class)s">\n''' \
                                             % {'table_class': table_class})
         for diff in diff_lines:
             for line in diff['chunks']:
                 _html_empty = False
                 for change in line:
                     _html.append('''<tr class="%(line_class)s %(action)s">\n''' \
                         % {'line_class': line_class,
                            'action': change['action']})
                     anchor_old_id = ''
                     anchor_new_id = ''
                     anchor_old = "%(filename)s_o%(oldline_no)s" % \
                                 {'filename': self._safe_id(diff['filename']),
                                  'oldline_no': change['old_lineno']}
                     anchor_new = "%(filename)s_n%(oldline_no)s" % \
                                 {'filename': self._safe_id(diff['filename']),
                                  'oldline_no': change['new_lineno']}
                     cond_old = change['old_lineno'] != '...' and \
                                                         change['old_lineno']
                     cond_new = change['new_lineno'] != '...' and \
                                                         change['new_lineno']
                     if cond_old:
                         anchor_old_id = 'id="%s"' % anchor_old
                     if cond_new:
                         anchor_new_id = 'id="%s"' % anchor_new
                     ###########################################################
                     # OLD LINE NUMBER
                     ###########################################################
                     _html.append('''\t<td %(a_id)s class="%(old_lineno_cls)s">''' \
                                     % {'a_id': anchor_old_id,
                                        'old_lineno_cls': old_lineno_class})
 
                     _html.append('''<pre>%(link)s</pre>''' \
                         % {'link':
                         _link_to_if(cond_old, change['old_lineno'], '#%s' \
                                                                 % anchor_old)})
                     _html.append('''</td>\n''')
                     ###########################################################
                     # NEW LINE NUMBER
                     ###########################################################
 
                     _html.append('''\t<td %(a_id)s class="%(new_lineno_cls)s">''' \
                                     % {'a_id': anchor_new_id,
                                        'new_lineno_cls': new_lineno_class})
 
                     _html.append('''<pre>%(link)s</pre>''' \
                         % {'link':
                         _link_to_if(cond_new, change['new_lineno'], '#%s' \
                                                                 % anchor_new)})
                     _html.append('''</td>\n''')
                     ###########################################################
                     # CODE
                     ###########################################################
                     _html.append('''\t<td class="%(code_class)s">''' \
                                                 % {'code_class': code_class})
                     _html.append('''\n\t\t<pre>%(code)s</pre>\n''' \
                                                 % {'code': change['line']})
                     _html.append('''\t</td>''')
                     _html.append('''\n</tr>\n''')
         _html.append('''</table>''')
         if _html_empty:
             return None
         return ''.join(_html)
 
     def stat(self):
         """
         Returns tuple of added, and removed lines for this instance
         """
         return self.adds, self.removes