elif self.vcs == 'hg':

            match = self._hg_header_re.match(diff_chunk)

            diff = diff_chunk[match.end():]

            return match.groupdict(), imap(self._escaper, diff.splitlines(1))

        else:

            raise Exception('VCS type %s is not supported' % self.vcs)

    def _clean_line(self, line, command):

        if command in ['+', '-', ' ']:

            #only modify the line if it's actually a diff thing

            line = line[1:]

        return line

    def _parse_gitdiff(self, inline_diff=True):

        _files = []

        diff_container = lambda arg: arg

        ##split the diff in chunks of separate --git a/file b/file chunks

        for raw_diff in ('\n' + self._diff).split('\ndiff --git')[1:]:

            head, diff = self._get_header(raw_diff)

            op = None

            stats = {

                'added': 0,

                'deleted': 0,

                'binary': False,

                'ops': {},

            }

            if head['deleted_file_mode']:

                op = 'D'

                stats['binary'] = True

                stats['ops'][DEL_FILENODE] = 'deleted file'

            elif head['new_file_mode']:

                op = 'A'

                stats['binary'] = True

                stats['ops'][NEW_FILENODE] = 'new file %s' % head['new_file_mode']

            else:  # modify operation, can be cp, rename, chmod

                # CHMOD

                if head['new_mode'] and head['old_mode']:

                    op = 'M'

                    stats['binary'] = True

                    stats['ops'][CHMOD_FILENODE] = ('modified file chmod %s => %s'

                                        % (head['old_mode'], head['new_mode']))

                # RENAME

                if (head['rename_from'] and head['rename_to']

                      and head['rename_from'] != head['rename_to']):

                    stats['binary'] = True

                    stats['ops'][RENAMED_FILENODE] = ('file renamed from %s to %s'

                                    % (head['rename_from'], head['rename_to']))

                # COPY

                if head.get('copy_from') and head.get('copy_to'):

                    op = 'M'

                    stats['binary'] = True

                    stats['ops'][COPIED_FILENODE] = ('file copied from %s to %s'

                                        % (head['copy_from'], head['copy_to']))

                # FALL BACK: detect missed old style add or remove

                if op is None:

                    if not head['a_file'] and head['b_file']:

                        op = 'A'

                        stats['binary'] = True

                        stats['ops'][NEW_FILENODE] = 'new file'

                    elif head['a_file'] and not head['b_file']:

                        op = 'D'

                        stats['binary'] = True

                        stats['ops'][DEL_FILENODE] = 'deleted file'

                # it's not ADD not DELETE

                if op is None:

                    op = 'M'

                    stats['binary'] = True

                    stats['ops'][MOD_FILENODE] = 'modified file'

            # a real non-binary diff

            if head['a_file'] or head['b_file']:

                try:

                    chunks, _stats = self._parse_lines(diff)

                    stats['binary'] = False

                    stats['added'] = _stats[0]

                    stats['deleted'] = _stats[1]

                    # explicit mark that it's a modified file

                    if op == 'M':

                        stats['ops'][MOD_FILENODE] = 'modified file'

                except DiffLimitExceeded:

                    diff_container = lambda _diff: \

                        LimitedDiffContainer(self.diff_limit,

                                            self.cur_diff_size, _diff)

                    break

            else:  # GIT binary patch (or empty diff)

                # GIT Binary patch

                if head['bin_patch']:

                    stats['ops'][BIN_FILENODE] = 'binary diff not shown'

                chunks = []

/**

 * Stylesheets for the context bar

 */

i.icon-arrow-right { background-image: url('../images/icons/arrow_right.png');}

i.icon-bar-chart { background-image: url("../images/icons/chart_bar.png"); }

i.icon-code-merge { background-image: url("../images/icons/arrow_merge.png"); } /* unused! */

i.icon-ellipsis-horizontal:after { content: ' ...';}

i.icon-eye-open { background-image: url("../images/icons/eye.png"); }

i.icon-file-txt { background-image: url("../images/icons/note_error.png"); }

i.icon-git { background-image: url('../images/icons/giticon.png');}

i.icon-hg { background-image: url('../images/icons/hgicon.png');}

i.icon-refresh { background-image: url('../images/icons/arrow_refresh.png');}

i.icon-disabled { background-image: url('../images/icons/shading.png');} /* todo: use instead of minus sign */

i[class^='icon-'] {

    background-repeat: no-repeat;

    background-position: center;

    display: inline-block;

    min-width: 16px;

    min-height: 16px;

    margin: -2px 0 -4px 0;

    /* background-color: red; /* for debugging */

}

/* css classes for diff file status ... it'd be nice if css had a way to

   inherit from another class but alas, we must make sure this content is the

   same from the icon font file */

.icon-diff-M:before {

    font-family: 'kallithea';

    content: '\e805';

    color: #d0b44c;

}

.icon-diff-D:before {

    font-family: 'kallithea';

    content: '\e807';

    color: #bd2c00;

}

.icon-diff-A:before {

    font-family: 'kallithea';

    content: '\e806';

    color: #6cc644;

}

#content #context-bar {

    position: relative;

    overflow: visible;

    background-color: #577632;

    padding: 0 5px;

    min-height: 36px;

}

#content #context-bar h2 {

    display: inline-block;

    color: #FFF;

}

#header #header-inner #quick a,

#content #context-bar,

#content #context-bar a {

    color: #FFFFFF;

}

#header #header-inner #quick a:hover,

#content #context-bar a:hover {

    text-decoration: none;

}

#content #context-bar .icon {

    display: inline-block;

    width: 16px;

    height: 16px;

    vertical-align: text-bottom;

}

ul.horizontal-list {

    display: block;

}

ul.horizontal-list > li {

    float: left;

    position: relative;

}

#header #header-inner #quick ul,

ul.horizontal-list > li ul {

    position: absolute;

    display: none;

    right: 0;

    z-index: 999;

}

}

/*deleted binary*/

.cs_files .changes .bin.bin2 {

    background-color: #FF8888;

}

/*mod binary*/

.cs_files .changes .bin.bin3 {

    background-color: #DDDDDD;

}

/*rename file*/

.cs_files .changes .bin.bin4 {

    background-color: #6D99FF;

}

/*rename file*/

.cs_files .changes .bin.bin4 {

    background-color: #6D99FF;

}

/*chmod file*/

.cs_files .changes .bin.bin5 {

    background-color: #6D99FF;

}

.cs_files .cs_added,

.cs_files .cs_A {

    height: 16px;

    margin-top: 7px;

    text-align: left;

}

.cs_files .cs_changed,

.cs_files .cs_M {

    height: 16px;

    margin-top: 7px;

    text-align: left;

}

.cs_files .cs_removed,

.cs_files .cs_D {

    height: 16px;

    margin-top: 7px;

    text-align: left;

}

.table {

    position: relative;

}

#graph {

    position: relative;

    overflow: hidden;

}

#graph_nodes {

    position: absolute;

}

#graph_content,

#graph .info_box,

#graph .container_header {

    margin-left: 100px;

}

#graph_content {

    position: relative;

}

#graph .container_header {

    padding: 10px;

    height: 25px;

}

#graph_content #rev_range_container {

    float: left;

    margin: 0px 0px 0px 3px;

}

#graph_content #rev_range_clear {

    float: left;

    margin: 0px 0px 0px 3px;

}

#graph_content #changesets {

    table-layout: fixed;

    border-collapse: collapse;

    border-left: none;

    border-right: none;

    border-color: #cdcdcd;

}

#graph_content #changesets td {

    overflow: hidden;

                </span>

            </div>

        </div>

        <div class="code-body">

            <div class="full_f_path" path="${h.safe_unicode(path)}"></div>

            ${diff|n}

            %if path.rsplit('.')[-1] in ['png', 'gif', 'jpg', 'bmp']:

              <div class="btn btn-image-diff-show">Show images</div>

              %if change =='M':

                <div id="${FID}_image-diff" class="btn btn-image-diff-swap" style="display:none">Press to swap images</div>

              %endif

              <div style="font-size: 0">

                %if change == 'M':

                  <img id="${FID}_image-diff-img-a" class="img-diff img-diff-swapable" style="display:none"

                      realsrc="${h.url('files_raw_home',repo_name=c.repo_name,revision=cs1,f_path=path)}" />

                %endif

                %if change in 'AM':

                  <img id="${FID}_image-diff-img-b" class="img-diff img-diff-swapable" style="display:none"

                      realsrc="${h.url('files_raw_home',repo_name=c.repo_name,revision=cs2,f_path=path)}" />

                %endif

              </div>

            %endif

        </div>

    </div>

%endfor

</div>

</%def>

<%def name="diff_block_simple(change)">

  %for op,filenode_path,diff in change:

    <div id="${h.FID('',filenode_path)}_target" style="clear:both;margin-top:25px"></div>

    <div id="${h.FID('',filenode_path)}" class="diffblock  margined comm">

      <div class="code-header">

          <div class="changeset_header">

              <div class="changeset_file">

                  ${h.safe_unicode(filenode_path)} |

                  ## TODO: link to ancestor and head of other instead of exactly other

                  %if op == 'A':

                    ${_('Added')}

                    <a class="spantag" href="${h.url('files_home', repo_name=c.cs_repo.repo_name, f_path=filenode_path, revision=c.cs_rev)}">${h.short_id(c.cs_ref_name) if c.cs_ref_type=='rev' else c.cs_ref_name}</a>

                  %elif op == 'M':

                    <a class="spantag" href="${h.url('files_home', repo_name=c.a_repo.repo_name, f_path=filenode_path, revision=c.a_rev)}">${h.short_id(c.a_ref_name) if c.a_ref_type=='rev' else c.a_ref_name}</a>

                    <i class="icon-arrow-right"></i>

                    <a class="spantag" href="${h.url('files_home', repo_name=c.cs_repo.repo_name, f_path=filenode_path, revision=c.cs_rev)}">${h.short_id(c.cs_ref_name) if c.cs_ref_type=='rev' else c.cs_ref_name}</a>

                  %elif op == 'D':

                    ${_('Deleted')}

                    <a class="spantag" href="${h.url('files_home', repo_name=c.a_repo.repo_name, f_path=filenode_path, revision=c.a_rev)}">${h.short_id(c.a_ref_name) if c.a_ref_type=='rev' else c.a_ref_name}</a>

                  %else:

                    ${op}???

                  %endif

              </div>

              <div class="diff-actions">

                <a href="${h.url('files_diff_2way_home',repo_name=c.cs_repo.repo_name,f_path=h.safe_unicode(filenode_path),diff1=c.a_rev,diff2=c.cs_rev,diff='diff',fulldiff=1)}" class="tooltip" title="${h.tooltip(_('Show full side-by-side diff for this file'))}">

                  <i class="icon-docs"></i>

                </a>

                ${c.ignorews_url(request.GET)}

                ${c.context_url(request.GET)}

              </div>

          </div>

      </div>

        <div class="code-body">

            <div class="full_f_path" path="${h.safe_unicode(filenode_path)}"></div>

            ${diff|n}

            %if filenode_path.rsplit('.')[-1] in ['png', 'gif', 'jpg', 'bmp']:

              <div class="btn btn-image-diff-show">Show images</div>

              %if op == 'M':

                <div id="${h.FID('',filenode_path)}_image-diff" class="btn btn-image-diff-swap" style="display:none">Press to swap images</div>

              %endif

              <div style="font-size: 0">

                %if op == 'M':

                  <img id="${h.FID('',filenode_path)}_image-diff-img-a" class="img-diff img-diff-swapable" style="display:none"

                      realsrc="${h.url('files_raw_home',repo_name=c.a_repo.repo_name,revision=c.a_rev,f_path=filenode_path) if op in 'DM' else ''}" />

                %endif

                %if op in 'AM':

                  <img id="${h.FID('',filenode_path)}_image-diff-img-b" class="img-diff img-diff-swapable" style="display:none"

                      realsrc="${h.url('files_raw_home',repo_name=c.cs_repo.repo_name,revision=c.cs_rev,f_path=filenode_path) if op in 'AM' else ''}" />

                %endif

              </div>

            %endif

        </div>

    </div>

  %endfor

</%def>

<%def name="diff_block_js()">

<script type="text/javascript">

$(document).ready(function(){

    $('.btn-image-diff-show').click(function(e){

        $('.btn-image-diff-show').hide();

        $('.btn-image-diff-swap').show();

        $('.img-diff-swapable')

            .each(function(i,e){

                    $(e).attr('src', $(e).attr('realsrc'));

                })

            .show();

from __future__ import with_statement

from kallithea.tests import *

from kallithea.lib.diffs import DiffProcessor, NEW_FILENODE, DEL_FILENODE, \

    MOD_FILENODE, RENAMED_FILENODE, CHMOD_FILENODE, BIN_FILENODE, COPIED_FILENODE

from kallithea.tests.fixture import Fixture

fixture = Fixture()

DIFF_FIXTURES = {

    'hg_diff_add_single_binary_file.diff': [

        ('US Warszawa.jpg', 'A',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {NEW_FILENODE: 'new file 100755',

                  BIN_FILENODE: 'binary diff not shown'}}),

    ],

    'hg_diff_mod_single_binary_file.diff': [

        ('US Warszawa.jpg', 'M',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {MOD_FILENODE: 'modified file',

                  BIN_FILENODE: 'binary diff not shown'}}),

    ],

    'hg_diff_mod_single_file_and_rename_and_chmod.diff': [

         {'added': 3,

          'deleted': 0,

          'binary': False,

                  CHMOD_FILENODE: 'modified file chmod 100755 => 100644'}}),

    ],

    'hg_diff_mod_file_and_rename.diff': [

         {'added': 3,

          'deleted': 0,

          'binary': False,

    ],

    'hg_diff_del_single_binary_file.diff': [

        ('US Warszawa.jpg', 'D',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {DEL_FILENODE: 'deleted file',

                  BIN_FILENODE: 'binary diff not shown'}}),

    ],

    'hg_diff_chmod_and_mod_single_binary_file.diff': [

        ('gravatar.png', 'M',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755',

                  BIN_FILENODE: 'binary diff not shown'}}),

    ],

    'hg_diff_chmod.diff': [

        ('file', 'M',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {CHMOD_FILENODE: 'modified file chmod 100755 => 100644'}}),

    ],

    'hg_diff_rename_file.diff': [

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {RENAMED_FILENODE: 'file renamed from file to file_renamed'}}),

    ],

    'hg_diff_rename_and_chmod_file.diff': [

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755',

                  RENAMED_FILENODE: 'file renamed from README.rst to README'}}),

    ],

    'hg_diff_binary_and_normal.diff': [

        ('img/baseline-10px.png', 'A',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {NEW_FILENODE: 'new file 100644',

                  BIN_FILENODE: 'binary diff not shown'}}),

        ('img/baseline-20px.png', 'D',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {DEL_FILENODE: 'deleted file',

                  BIN_FILENODE: 'binary diff not shown'}}),

        ('index.html', 'M',

         {'added': 3,

          'deleted': 2,

          'binary': False,

          'ops': {MOD_FILENODE: 'modified file'}}),

        ('js/global.js', 'D',

         {'added': 0,

          'deleted': 75,

          'binary': False,

          'ops': {DEL_FILENODE: 'deleted file'}}),

        ('js/jquery/hashgrid.js', 'A',

         {'added': 340,

          'deleted': 0,

          'binary': False,

          'ops': {NEW_FILENODE: 'new file 100755'}}),

        ('less/docs.less', 'M',

         {'added': 34,

          'deleted': 0,

          'binary': False,

          'ops': {MOD_FILENODE: 'modified file'}}),

        ('less/scaffolding.less', 'M',

         {'added': 1,

          'deleted': 3,

          'binary': False,

          'ops': {MOD_FILENODE: 'modified file'}}),

        ('readme.markdown', 'M',

         {'added': 1,

          'deleted': 10,

          'binary': False,

          'ops': {MOD_FILENODE: 'modified file'}}),

    ],

    'git_diff_chmod.diff': [

        ('work-horus.xls', 'M',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {CHMOD_FILENODE: 'modified file chmod 100644 => 100755'}})

    ],

    'git_diff_rename_file.diff': [

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {RENAMED_FILENODE: 'file renamed from work-horus.xls to file.xls'}})

    ],

    'git_diff_mod_single_binary_file.diff': [

        ('US Warszawa.jpg', 'M',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {MOD_FILENODE: 'modified file',

                  BIN_FILENODE: 'binary diff not shown'}})

    ],

    'git_diff_binary_and_normal.diff': [

        ('img/baseline-10px.png', 'A',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {NEW_FILENODE: 'new file 100644',

                  BIN_FILENODE: 'binary diff not shown'}}),

        ('img/baseline-20px.png', 'D',

         {'added': 0,

          'deleted': 0,

          'binary': True,

          'ops': {DEL_FILENODE: 'deleted file',

                  BIN_FILENODE: 'binary diff not shown'}}),

        ('index.html', 'M',

         {'added': 3,

          'deleted': 2,

          'binary': False,

          'ops': {MOD_FILENODE: 'modified file'}}),

        ('js/global.js', 'D',

         {'added': 0,

          'deleted': 75,

          'binary': False,

          'ops': {DEL_FILENODE: 'deleted file'}}),

        ('js/jquery/hashgrid.js', 'A',

         {'added': 340,

          'deleted': 0,

          'binary': False,

          'ops': {NEW_FILENODE: 'new file 100755'}}),

        ('less/docs.less', 'M',

         {'added': 34,

          'deleted': 0,

          'binary': False,

          'ops': {MOD_FILENODE: 'modified file'}}),

        ('less/scaffolding.less', 'M',

         {'added': 1,