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# -*- coding: utf-8 -*-
# Copyright (c) 2003-2011 LOGILAB S.A. (Paris, FRANCE).
# http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# 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 2 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/>.
"""
Application utilities.
"""
import os, sys
from optparse import OptionParser
from mercurial import hg, ui
from mercurial.error import RepoError
from hgviewlib.util import find_repository, rootpath
from hgviewlib.config import HgConfig
class Viewer(object):
"""Base viewer class interface."""
def __init__(self, *args, **kwargs):
raise NotImplementedError(
'This feature has not yet been implemented. Comming soon ...')
class FileViewer(Viewer):
"""Single file revision graph viewer."""
def __init__(self, repo, filename, **kwargs):
super(FileDiffViewer, self).__init__(**kwargs)
class FileDiffViewer(Viewer):
"""Viewer that displays diffs between different revisions of a file."""
def __init__(self, repo, filename, **kwargs):
super(FileDiffViewer, self).__init__(**kwargs)
class HgRepoViewer(Viewer):
"""hg repository viewer."""
def __init__(self, repo, **kwargs):
super(HgRepoViewer, self).__init__(**kwargs)
class ManifestViewer(Viewer):
"""Viewer that displays all files of a repo at a given revision"""
def __init__(self, repo, rev, **kwargs):
super(ManifestViewer, self).__init__(**kwargs)
class ApplicationError(ValueError):
"""Exception that may occures while lunching the application"""
class HgViewApplication(object):
# class that must be instancied
FileViewer = FileViewer
FileDiffViewer = FileDiffViewer
HgRepoViewer = HgRepoViewer
ManifestViewer = ManifestViewer
def __init__(self, repo, opts, args, **kawrgs):
self.viewer = None
if opts.navigate and len(args) != 1:
ApplicationError(
"you must provide a filename to start in navigate mode")
if len(args) > 1:
ApplicationError("provide at most one file name")
self.opts = opts
self.args = args
self.repo = repo
self.choose_viewer()
def choose_viewer(self):
"""Choose the right viewer"""
if len(self.args) == 1:
filename = rootpath(self.repo, self.opts.rev, self.args[0])
if not filename:
raise ApplicationError("%s is not a tracked file" % self.args[0])
# should be a filename of a file managed in the repo
if self.opts.navigate:
viewer = self.FileViewer(self.repo, filename)
else:
viewer = self.FileDiffViewer(self.repo, filename)
else:
rev = self.opts.rev
if rev:
try:
self.repo.changectx(rev)
except RepoError, e:
raise ApplicationError("Cannot find revision %s" % rev)
else:
viewer = self.ManifestViewer(self.repo, rev)
else:
viewer = self.HgRepoViewer(self.repo)
self.viewer = viewer
def exec_(self):
raise NotImplementedError()
def start(repo, opts, args, fnerror):
"""
start hgview
"""
config = HgConfig(repo.ui)
if not opts.interface:
opts.interface = config.getInterface()
Application = None
if not opts.interface or opts.interface == 'qt':
try:
from hgviewlib.qt4.application import HgViewQtApplication as Application
opts.interface = 'qt'
except ImportError:
pass
if not opts.interface or opts.interface in ('raw', 'curses'):
try:
from hgviewlib.curses.application import HgViewUrwidApplication as Application
opts.interface = 'raw'
except ImportError:
pass
if not opts.interface:
fnerror('No interface found')
if not Application:
fnerror('Interface is not available: %s' % opts.interface)
try:
app = Application(repo, opts, args)
except (ApplicationError, NotImplementedError), err:
fnerror(str(err))
return app.exec_()
def main():
"""
Main application acces point.
"""
usage = '''%prog [options] [filename]
Starts a visual hg repository navigator.
- With no options, starts the main repository navigator.
- If a filename is given, starts in filelog diff mode (or in
filelog navigation mode if -n option is set).
- With -r option, starts in manifest viewer mode for given
revision.
'''
parser = OptionParser(usage)
parser.add_option('-I', '--interface', dest='interface',
help=('which GUI interface to use (among "qt", "raw"'
' and "curses")'),
)
parser.add_option('-R', '--repository', dest='repo',
help='location of the repository to explore')
parser.add_option('-r', '--rev', dest='rev', default=None,
help='start in manifest navigation mode at rev R')
parser.add_option('-n', '--navigate', dest='navigate', default=False,
action="store_true",
help='(with filename) start in navigation mode')
opts, args = parser.parse_args()
if opts.repo:
dir_ = opts.repo
else:
dir_ = os.getcwd()
dir_ = find_repository(dir_)
try:
u = ui.ui()
repo = hg.repository(u, dir_)
except RepoError, e:
parser.error(e)
except:
parser.error("There is no Mercurial repository here (.hg not found)!")
try:
sys.exit(start(repo, opts, args, parser.error))
except KeyboardInterrupt:
print 'interrupted!'
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