# -*- coding: utf-8 -*-

# 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/>.

"""

kallithea.controllers.changeset

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

changeset controller showing changes between revisions

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Apr 25, 2010

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import logging

import traceback

from tg import tmpl_context as c, request, response

from tg.i18n import ugettext as _

from webob.exc import HTTPFound, HTTPForbidden, HTTPBadRequest, HTTPNotFound

from kallithea.lib.vcs.exceptions import RepositoryError, \

    ChangesetDoesNotExistError, EmptyRepositoryError

import kallithea.lib.helpers as h

from kallithea.lib.auth import LoginRequired, HasRepoPermissionLevelDecorator

from kallithea.lib.base import BaseRepoController, render, jsonify

from kallithea.lib.utils import action_logger

from kallithea.lib import diffs

from kallithea.model.db import ChangesetComment, ChangesetStatus

from kallithea.model.comment import ChangesetCommentsModel

from kallithea.model.changeset_status import ChangesetStatusModel

from kallithea.model.meta import Session

from kallithea.model.pull_request import PullRequestModel

from kallithea.model.repo import RepoModel

from kallithea.lib.vcs.backends.base import EmptyChangeset

from kallithea.lib.utils2 import safe_unicode

from kallithea.lib.graphmod import graph_data

log = logging.getLogger(__name__)

def _update_with_GET(params, GET):

    for k in ['diff1', 'diff2', 'diff']:

        params[k] += GET.getall(k)

def anchor_url(revision, path, GET):

    fid = h.FID(revision, path)

    return h.url.current(anchor=fid, **dict(GET))

def get_ignore_ws(fid, GET):

    ig_ws_global = GET.get('ignorews')

    ig_ws = filter(lambda k: k.startswith('WS'), GET.getall(fid))

    if ig_ws:

        try:

            return int(ig_ws[0].split(':')[-1])

        except ValueError:

            raise HTTPBadRequest()

    return ig_ws_global

def _ignorews_url(GET, fileid=None):

    fileid = str(fileid) if fileid else None

    params = defaultdict(list)

    _update_with_GET(params, GET)

    lbl = _('Show whitespace')

    ig_ws = get_ignore_ws(fileid, GET)

    ln_ctx = get_line_ctx(fileid, GET)

    # global option

    if fileid is None:

        if ig_ws is None:

            params['ignorews'] += [1]

            lbl = _('Ignore whitespace')

        ctx_key = 'context'

        ctx_val = ln_ctx

    # per file options

    else:

        if ig_ws is None:

            params[fileid] += ['WS:1']

            lbl = _('Ignore whitespace')

        ctx_key = fileid

        ctx_val = 'C:%s' % ln_ctx

    # if we have passed in ln_ctx pass it along to our params

    if ln_ctx:

        params[ctx_key] += [ctx_val]

    params['anchor'] = fileid

    icon = h.literal('<i class="icon-strike"></i>')

    return h.link_to(icon, h.url.current(**params), title=lbl, **{'data-toggle': 'tooltip'})

def get_line_ctx(fid, GET):

    ln_ctx_global = GET.get('context')

    if fid:

        ln_ctx = filter(lambda k: k.startswith('C'), GET.getall(fid))

    else:

        _ln_ctx = filter(lambda k: k.startswith('C'), GET)

        ln_ctx = GET.get(_ln_ctx[0]) if _ln_ctx else ln_ctx_global

        if ln_ctx:

            ln_ctx = [ln_ctx]

    if ln_ctx:

        retval = ln_ctx[0].split(':')[-1]

    else:

        retval = ln_ctx_global

    try:

        return int(retval)

    except Exception:

        return 3

def _context_url(GET, fileid=None):

    """

    Generates url for context lines

    :param fileid:

    """

    fileid = str(fileid) if fileid else None

    ig_ws = get_ignore_ws(fileid, GET)

    ln_ctx = (get_line_ctx(fileid, GET) or 3) * 2

    params = defaultdict(list)

    _update_with_GET(params, GET)

    # global option

    if fileid is None:

        if ln_ctx > 0:

            params['context'] += [ln_ctx]

        if ig_ws:

            ig_ws_key = 'ignorews'

            ig_ws_val = 1

    # per file option

    else:

        params[fileid] += ['C:%s' % ln_ctx]

        ig_ws_key = fileid

        ig_ws_val = 'WS:%s' % 1

    if ig_ws:

        params[ig_ws_key] += [ig_ws_val]

    lbl = _('Increase diff context to %(num)s lines') % {'num': ln_ctx}

    params['anchor'] = fileid

    icon = h.literal('<i class="icon-sort"></i>')

    return h.link_to(icon, h.url.current(**params), title=lbl, **{'data-toggle': 'tooltip'})

def create_cs_pr_comment(repo_name, revision=None, pull_request=None, allowed_to_change_status=True):

    """

    Add a comment to the specified changeset or pull request, using POST values

    from the request.

    Comments can be inline (when a file path and line number is specified in

    POST) or general comments.

    A comment can be accompanied by a review status change (accepted, rejected,

    etc.). Pull requests can be closed or deleted.

    Parameter 'allowed_to_change_status' is used for both status changes and

    closing of pull requests. For deleting of pull requests, more specific

    checks are done.

    """

    assert request.environ.get('HTTP_X_PARTIAL_XHR')

    if pull_request:

        pull_request_id = pull_request.pull_request_id

    else:

        pull_request_id = None

    status = request.POST.get('changeset_status')

    close_pr = request.POST.get('save_close')

    delete = request.POST.get('save_delete')

    f_path = request.POST.get('f_path')

    line_no = request.POST.get('line')

    if (status or close_pr or delete) and (f_path or line_no):

        # status votes and closing is only possible in general comments

        raise HTTPBadRequest()

    if not allowed_to_change_status:

        if status or close_pr:

            h.flash(_('No permission to change status'), 'error')

            raise HTTPForbidden()

    if pull_request and delete == "delete":

        if (pull_request.owner_id == request.authuser.user_id or

            h.HasPermissionAny('hg.admin')() or

            h.HasRepoPermissionLevel('admin')(pull_request.org_repo.repo_name) or

            h.HasRepoPermissionLevel('admin')(pull_request.other_repo.repo_name)

            ) and not pull_request.is_closed():

            PullRequestModel().delete(pull_request)

            Session().commit()

            h.flash(_('Successfully deleted pull request %s') % pull_request_id,

                    category='success')

            return {

               'location': h.url('my_pullrequests'), # or repo pr list?

            }

            raise HTTPFound(location=h.url('my_pullrequests')) # or repo pr list?

        raise HTTPForbidden()

    text = request.POST.get('text', '').strip()

    comment = ChangesetCommentsModel().create(

        text=text,

        repo=c.db_repo.repo_id,

        author=request.authuser.user_id,

        revision=revision,

        pull_request=pull_request_id,

        f_path=f_path or None,

        line_no=line_no or None,

        status_change=ChangesetStatus.get_status_lbl(status) if status else None,

        closing_pr=close_pr,

    )

    if status:

        ChangesetStatusModel().set_status(

            c.db_repo.repo_id,

            status,

            request.authuser.user_id,

            comment,

            revision=revision,

            pull_request=pull_request_id,

        )

    if pull_request:

        action = 'user_commented_pull_request:%s' % pull_request_id

    else:

        action = 'user_commented_revision:%s' % revision

    action_logger(request.authuser, action, c.db_repo, request.ip_addr)

    if pull_request and close_pr:

        PullRequestModel().close_pull_request(pull_request_id)

        action_logger(request.authuser,

                      'user_closed_pull_request:%s' % pull_request_id,

                      c.db_repo, request.ip_addr)

    Session().commit()

    data = {

       'target_id': h.safeid(h.safe_unicode(request.POST.get('f_path'))),

    }

    if comment is not None:

        c.comment = comment

        data.update(comment.get_dict())

        data.update({'rendered_text':

                     render('changeset/changeset_comment_block.html')})

    return data

def delete_cs_pr_comment(repo_name, comment_id):

    """Delete a comment from a changeset or pull request"""

    co = ChangesetComment.get_or_404(comment_id)

    if co.repo.repo_name != repo_name:

        raise HTTPNotFound()

    if co.pull_request and co.pull_request.is_closed():

        # don't allow deleting comments on closed pull request

        raise HTTPForbidden()

    owner = co.author_id == request.authuser.user_id

    repo_admin = h.HasRepoPermissionLevel('admin')(repo_name)

    if h.HasPermissionAny('hg.admin')() or repo_admin or owner:

        ChangesetCommentsModel().delete(comment=co)

        Session().commit()

        return True

    else:

        raise HTTPForbidden()

class ChangesetController(BaseRepoController):

    def _before(self, *args, **kwargs):

        super(ChangesetController, self)._before(*args, **kwargs)

        c.affected_files_cut_off = 60

    def _index(self, revision, method):

        c.pull_request = None

        c.anchor_url = anchor_url

        c.ignorews_url = _ignorews_url

        c.context_url = _context_url

        c.fulldiff = request.GET.get('fulldiff') # for reporting number of changed files

        # get ranges of revisions if preset

        rev_range = revision.split('...')[:2]

        enable_comments = True

        c.cs_repo = c.db_repo

        try:

            if len(rev_range) == 2:

                enable_comments = False

                rev_start = rev_range[0]

                rev_end = rev_range[1]

                rev_ranges = c.db_repo_scm_instance.get_changesets(start=rev_start,

                                                             end=rev_end)

            else:

                rev_ranges = [c.db_repo_scm_instance.get_changeset(revision)]

            c.cs_ranges = list(rev_ranges)

            if not c.cs_ranges:

                raise RepositoryError('Changeset range returned empty result')

        except (ChangesetDoesNotExistError, EmptyRepositoryError):

            log.debug(traceback.format_exc())

            msg = _('Such revision does not exist for this repository')

            h.flash(msg, category='error')

            raise HTTPNotFound()

        c.changes = OrderedDict()

        c.lines_added = 0  # count of lines added

        c.lines_deleted = 0  # count of lines removes

        c.changeset_statuses = ChangesetStatus.STATUSES

        comments = dict()

        c.statuses = []

        c.inline_comments = []

        c.inline_cnt = 0

        # Iterate over ranges (default changeset view is always one changeset)

        for changeset in c.cs_ranges:

            if method == 'show':

                c.statuses.extend([ChangesetStatusModel().get_status(

                            c.db_repo.repo_id, changeset.raw_id)])

                # Changeset comments

                comments.update((com.comment_id, com)

                                for com in ChangesetCommentsModel()

                                .get_comments(c.db_repo.repo_id,

                                              revision=changeset.raw_id))

                # Status change comments - mostly from pull requests

                comments.update((st.comment_id, st.comment)

                                for st in ChangesetStatusModel()

                                .get_statuses(c.db_repo.repo_id,

                                              changeset.raw_id, with_revisions=True)

                                if st.comment_id is not None)

                inlines = ChangesetCommentsModel() \

                            .get_inline_comments(c.db_repo.repo_id,

                                                 revision=changeset.raw_id)

                c.inline_comments.extend(inlines)

            cs2 = changeset.raw_id

            cs1 = changeset.parents[0].raw_id if changeset.parents else EmptyChangeset().raw_id

            context_lcl = get_line_ctx('', request.GET)

            ign_whitespace_lcl = get_ignore_ws('', request.GET)

            raw_diff = diffs.get_diff(c.db_repo_scm_instance, cs1, cs2,

                ignore_whitespace=ign_whitespace_lcl, context=context_lcl)

            diff_limit = None if c.fulldiff else self.cut_off_limit

            file_diff_data = []

            if method == 'show':

                diff_processor = diffs.DiffProcessor(raw_diff,

                                                     vcs=c.db_repo_scm_instance.alias,

                                                     diff_limit=diff_limit)

                c.limited_diff = diff_processor.limited_diff

                for f in diff_processor.parsed:

                    st = f['stats']

                    c.lines_added += st['added']

                    c.lines_deleted += st['deleted']

                    filename = f['filename']

                    fid = h.FID(changeset.raw_id, filename)

                    url_fid = h.FID('', filename)

                    html_diff = diffs.as_html(enable_comments=enable_comments, parsed_lines=[f])

                    file_diff_data.append((fid, url_fid, f['operation'], f['old_filename'], filename, html_diff, st))

            else:

                # downloads/raw we only need RAW diff nothing else

                file_diff_data.append(('', None, None, None, raw_diff, None))

            c.changes[changeset.raw_id] = (cs1, cs2, file_diff_data)

        # sort comments in creation order

        c.comments = [com for com_id, com in sorted(comments.items())]

        # count inline comments

        for __, 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.parent_tmpl = ''.join(['# Parent  %s\n' % x.raw_id

                                     for x in c.changeset.parents])

        if method == 'download':

            response.content_type = 'text/plain'

            response.content_disposition = 'attachment; filename=%s.diff' \

                                            % revision[:12]

            return raw_diff

        elif method == 'patch':

            response.content_type = 'text/plain'

            c.diff = safe_unicode(raw_diff)

            return render('changeset/patch_changeset.html')

        elif method == 'raw':

            response.content_type = 'text/plain'

            return raw_diff

        elif method == 'show':

            if len(c.cs_ranges) == 1:

                return render('changeset/changeset.html')

            else:

                c.cs_ranges_org = None

                c.cs_comments = {}

                revs = [ctx.revision for ctx in reversed(c.cs_ranges)]

                c.jsdata = graph_data(c.db_repo_scm_instance, revs)

                return render('changeset/changeset_range.html')

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def index(self, revision, method='show'):

        return self._index(revision, method=method)

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def changeset_raw(self, revision):

        return self._index(revision, method='raw')

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def changeset_patch(self, revision):

        return self._index(revision, method='patch')

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def changeset_download(self, revision):

        return self._index(revision, method='download')

    @LoginRequired()

    @HasRepoPermissionLevelDecorator('read')

    @jsonify

    def comment(self, repo_name, revision):

        return create_cs_pr_comment(repo_name, revision=revision)

    @LoginRequired()

    @HasRepoPermissionLevelDecorator('read')

    @jsonify

    def delete_comment(self, repo_name, comment_id):

        return delete_cs_pr_comment(repo_name, comment_id)

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    @jsonify

    def changeset_info(self, repo_name, revision):

        if request.is_xhr:

            try:

                return c.db_repo_scm_instance.get_changeset(revision)

            except ChangesetDoesNotExistError as e:

                return EmptyChangeset(message=str(e))

        else:

            raise HTTPBadRequest()

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    @jsonify

    def changeset_children(self, repo_name, revision):

        if request.is_xhr:

            changeset = c.db_repo_scm_instance.get_changeset(revision)

            result = {"results": []}

            if changeset.children:

                result = {"results": changeset.children}

            return result

        else:

            raise HTTPBadRequest()

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    @jsonify

    def changeset_parents(self, repo_name, revision):

        if request.is_xhr:

            changeset = c.db_repo_scm_instance.get_changeset(revision)

            result = {"results": []}

            if changeset.parents:

                result = {"results": changeset.parents}

            return result

        else:

            raise HTTPBadRequest()

# -*- coding: utf-8 -*-

# 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/>.

"""

kallithea.controllers.files

~~~~~~~~~~~~~~~~~~~~~~~~~~~

Files controller for Kallithea

This file was forked by the Kallithea project in July 2014.

Original author and date, and relevant copyright and licensing information is below:

:created_on: Apr 21, 2010

:author: marcink

:copyright: (c) 2013 RhodeCode GmbH, and others.

:license: GPLv3, see LICENSE.md for more details.

"""

import os

import posixpath

import logging

import traceback

import tempfile

import shutil

from tg import request, response, tmpl_context as c

from tg.i18n import ugettext as _

from webob.exc import HTTPFound

from kallithea.config.routing import url

from kallithea.lib.utils import action_logger

from kallithea.lib import diffs

from kallithea.lib import helpers as h

from kallithea.lib.utils2 import convert_line_endings, detect_mode, safe_str, \

    str2bool, safe_int

from kallithea.lib.auth import LoginRequired, HasRepoPermissionLevelDecorator

from kallithea.lib.base import BaseRepoController, render, jsonify

from kallithea.lib.vcs.backends.base import EmptyChangeset

from kallithea.lib.vcs.conf import settings

from kallithea.lib.vcs.exceptions import RepositoryError, \

    ChangesetDoesNotExistError, EmptyRepositoryError, \

    ImproperArchiveTypeError, VCSError, NodeAlreadyExistsError, \

    NodeDoesNotExistError, ChangesetError, NodeError

from kallithea.lib.vcs.nodes import FileNode

from kallithea.model.repo import RepoModel

from kallithea.model.scm import ScmModel

from kallithea.model.db import Repository

from kallithea.controllers.changeset import anchor_url, _ignorews_url, \

    _context_url, get_line_ctx, get_ignore_ws

from webob.exc import HTTPNotFound

from kallithea.lib.exceptions import NonRelativePathError

log = logging.getLogger(__name__)

class FilesController(BaseRepoController):

    def _before(self, *args, **kwargs):

        super(FilesController, self)._before(*args, **kwargs)

    def __get_cs(self, rev, silent_empty=False):

        """

        Safe way to get changeset if error occur it redirects to tip with

        proper message

        :param rev: revision to fetch

        :silent_empty: return None if repository is empty

        """

        try:

            return c.db_repo_scm_instance.get_changeset(rev)

        except EmptyRepositoryError as e:

            if silent_empty:

                return None

            url_ = url('files_add_home',

                       repo_name=c.repo_name,

                       revision=0, f_path='', anchor='edit')

            add_new = h.link_to(_('Click here to add new file'), url_, class_="alert-link")

            h.flash(_('There are no files yet.') + ' ' + add_new, category='warning')

            raise HTTPNotFound()

        except (ChangesetDoesNotExistError, LookupError):

            msg = _('Such revision does not exist for this repository')

            h.flash(msg, category='error')

            raise HTTPNotFound()

        except RepositoryError as e:

            h.flash(safe_str(e), category='error')

            raise HTTPNotFound()

    def __get_filenode(self, cs, path):

        """

        Returns file_node or raise HTTP error.

        :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 ChangesetDoesNotExistError:

            msg = _('Such revision does not exist for this repository')

            h.flash(msg, category='error')

            raise HTTPNotFound()

        except RepositoryError as e:

            h.flash(safe_str(e), category='error')

            raise HTTPNotFound()

        return file_node

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def index(self, repo_name, revision, f_path, annotate=False):

        # redirect to given revision from form if given

        post_revision = request.POST.get('at_rev', None)

        if post_revision:

            cs = self.__get_cs(post_revision) # FIXME - unused!

        c.revision = revision

        c.changeset = self.__get_cs(revision)

        c.branch = request.GET.get('branch', None)

        c.f_path = f_path

        c.annotate = annotate

        cur_rev = c.changeset.revision

        # used in files_source.html:

        c.cut_off_limit = self.cut_off_limit

        c.fulldiff = request.GET.get('fulldiff')

        # prev link

        try:

            prev_rev = c.db_repo_scm_instance.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.db_repo_scm_instance.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_submodule():

                raise HTTPFound(location=c.file.url)

            elif c.file.is_file():

                c.load_full_history = False

                # determine if we're on branch head

                _branches = c.db_repo_scm_instance.branches

                c.on_branch_head = revision in _branches.keys() + _branches.values()

                _hist = []

                c.file_history = []

                if c.load_full_history:

                    c.file_history, _hist = self._get_node_history(c.changeset, f_path)

                c.authors = []

                for a in set([x.author for x in _hist]):

                    c.authors.append((h.email(a), h.person(a)))

            else:

                c.authors = c.file_history = []

        except RepositoryError as e:

            h.flash(safe_str(e), category='error')

            raise HTTPNotFound()

        if request.environ.get('HTTP_X_PARTIAL_XHR'):

            return render('files/files_ypjax.html')

        # TODO: tags and bookmarks?

        c.revision_options = [(c.changeset.raw_id,

                              _('%s at %s') % (b, h.short_id(c.changeset.raw_id))) for b in c.changeset.branches] + \

            [(n, b) for b, n in c.db_repo_scm_instance.branches.items()]

        if c.db_repo_scm_instance.closed_branches:

            prefix = _('(closed)') + ' '

            c.revision_options += [('-', '-')] + \

                [(n, prefix + b) for b, n in c.db_repo_scm_instance.closed_branches.items()]

        return render('files/files.html')

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    @jsonify

    def history(self, repo_name, revision, f_path):

        changeset = self.__get_cs(revision)

        _file = changeset.get_node(f_path)

        if _file.is_file():

            file_history, _hist = self._get_node_history(changeset, f_path)

            res = []

            for obj in file_history:

                res.append({

                    'text': obj[1],

                    'children': [{'id': o[0], 'text': o[1]} for o in obj[0]]

                })

            data = {

                'more': False,

                'results': res

            }

            return data

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def authors(self, repo_name, revision, f_path):

        changeset = self.__get_cs(revision)

        _file = changeset.get_node(f_path)

        if _file.is_file():

            file_history, _hist = self._get_node_history(changeset, f_path)

            c.authors = []

            for a in set([x.author for x in _hist]):

                c.authors.append((h.email(a), h.person(a)))

            return render('files/files_history_box.html')

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def rawfile(self, repo_name, revision, f_path):

        cs = self.__get_cs(revision)

        file_node = self.__get_filenode(cs, f_path)

        response.content_disposition = 'attachment; filename=%s' % \

            safe_str(f_path.split(Repository.url_sep())[-1])

        response.content_type = file_node.mimetype

        return file_node.content

    @LoginRequired(allow_default_user=True)

    @HasRepoPermissionLevelDecorator('read')

    def raw(self, repo_name, revision, f_path):

        cs = self.__get_cs(revision)

        file_node = self.__get_filenode(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

    @LoginRequired()

    @HasRepoPermissionLevelDecorator('write')

    def delete(self, repo_name, revision, f_path):

        repo = c.db_repo

        # check if revision is a branch identifier- basically we cannot

        # create multiple heads via file editing

        _branches = repo.scm_instance.branches

        # check if revision is a branch name or branch hash

        if revision not in _branches.keys() + _branches.values():

            h.flash(_('You can only delete files with revision '

                      'being a valid branch'), category='warning')

            raise HTTPFound(location=h.url('files_home',

                                  repo_name=repo_name, revision='tip',

                                  f_path=f_path))

        r_post = request.POST

        c.cs = self.__get_cs(revision)

        c.file = self.__get_filenode(c.cs, f_path)

        c.default_message = _('Deleted file %s via Kallithea') % (f_path)

        c.f_path = f_path

        node_path = f_path

        author = request.authuser.full_contact

        if r_post:

            message = r_post.get('message') or c.default_message

            try:

                nodes = {

                    node_path: {

                        'content': ''

                    }

                }

                self.scm_model.delete_nodes(

                    user=request.authuser.user_id,

                    ip_addr=request.ip_addr,

                    repo=c.db_repo,

                    message=message,

                    nodes=nodes,

                    parent_cs=c.cs,

                    author=author,

                )

                h.flash(_('Successfully deleted file %s') % f_path,

                        category='success')

            except Exception:

                log.error(traceback.format_exc())

                h.flash(_('Error occurred during commit'), category='error')

            raise HTTPFound(location=url('changeset_home',

                                repo_name=c.repo_name, revision='tip'))

        return render('files/files_delete.html')

    @LoginRequired()

    @HasRepoPermissionLevelDecorator('write')

    def edit(self, repo_name, revision, f_path):

        repo = c.db_repo

        # check if revision is a branch identifier- basically we cannot

        # create multiple heads via file editing

        _branches = repo.scm_instance.branches

        # check if revision is a branch name or branch hash

        if revision not in _branches.keys() + _branches.values():

            h.flash(_('You can only edit files with revision '

                      'being a valid branch'), category='warning')

            raise HTTPFound(location=h.url('files_home',

                                  repo_name=repo_name, revision='tip',

                                  f_path=f_path))

        r_post = request.POST

        c.cs = self.__get_cs(revision)

        c.file = self.__get_filenode(c.cs, f_path)

        if c.file.is_binary:

            raise HTTPFound(location=url('files_home', repo_name=c.repo_name,

                            revision=c.cs.raw_id, f_path=f_path))

        c.default_message = _('Edited file %s via Kallithea') % (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 ''