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Viewing changes to fai/command/show_changeset.py

  • Committer: Robert Collins
  • Date: 2005-09-13 15:11:39 UTC
  • mto: (147.2.6) (364.1.3 bzrtools)
  • mto: This revision was merged to the branch mainline in revision 324.
  • Revision ID: robertc@robertcollins.net-20050913151139-9ac920fc9d7bda31
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fai/command/show_changeset.py
 
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# Copyright (C) 2004 Aaron Bentley
 
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# <aaron.bentley@utoronto.ca>
 
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#
 
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#    This program is free software; you can redistribute it and/or modify
 
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#    it under the terms of the GNU General Public License as published by
 
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#    the Free Software Foundation; either version 2 of the License, or
 
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#    (at your option) any later version.
 
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#
 
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#    This program is distributed in the hope that it will be useful,
 
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#    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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#    GNU General Public License for more details.
 
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#
 
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#    You should have received a copy of the GNU General Public License
 
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#    along with this program; if not, write to the Free Software
 
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#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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import sys
 
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import os
 
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import shutil
 
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sys.path=[os.path.realpath(os.path.dirname(__file__)+"/..")]+sys.path
 
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import arch
 
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import pylon
 
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from pylon.util import tmpdir
 
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from pylon import errors
 
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import cmdutil
 
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import commands
 
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__docformat__ = "restructuredtext"
 
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__doc__ = "Native show-changeset command"
 
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class ShowChangeset(commands.BaseCommand):
 
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    """Show the changes made by a changeset"""
 
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    def __init__(self):
 
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        self.description = self.__doc__
 
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    def get_completer(self, arg, index):
 
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        iter_r = cmdutil.iter_revision_completions(arg, arch.tree_root("."))
 
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        iter_d = cmdutil.iter_dir_completions(arg)
 
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        return cmdutil.iter_combine([iter_r, iter_d])
 
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    def do_command(self, cmdargs):
 
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        parser=self.get_parser()
 
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        (options, args) = parser.parse_args(cmdargs)
 
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        if len(args) != 1:
 
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            raise errors.GetHelp
 
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        try:
 
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            tree = arch.tree_root(".")
 
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        except:
 
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            tree = None
 
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        try:
 
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            revision = cmdutil.determine_revision_arch(tree, args[0])
 
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            tempdir = tmpdir(os.getcwd())
 
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            dir = tempdir
 
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        except errors.CantDetermineRevision:
 
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            revision = None
 
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            if os.access(args[0], os.X_OK) and os.path.isdir(args[0]):
 
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                dirspec=args[0]
 
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                tempdir = None
 
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            elif os.access(args[0], os.R_OK) and os.path.isfile(args[0]):
 
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                tempdir = tmpdir(os.getcwd())
 
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                dirspec = pylon.util.untar_parent(args[0], tempdir)
 
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            else:
 
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                raise
 
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        try:
 
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            if revision:
 
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                cmdutil.ensure_archive_registered(revision.archive)
 
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                changeset = revision.get_patch(dir)
 
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            elif dirspec:
 
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                changeset = arch.Changeset(dirspec)
 
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            try:
 
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                munger = pylon.ChangesetMunger(changeset)
 
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                munger.read_indices()
 
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                for line in pylon.iter_changes(munger):
 
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                    cmdutil.colorize(line)
 
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            except errors.InvalidChangeset, e:
 
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                raise errors.CommandFailedWrapper(e)
 
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            if options.diff:
 
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                for line in pylon.diff_iter2(munger.changeset):
 
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                    cmdutil.colorize(line)
 
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        finally:
 
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            if tempdir:
 
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                shutil.rmtree(tempdir)
 
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        return 0
 
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    def get_parser(self):
 
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        parser = cmdutil.CmdOptionParser("fai show-changeset REVISION/DIR")
 
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        parser.add_option("-d", "--diff", action="store_true", 
 
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                          dest="diff", help="Show diffs")
 
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        return parser
 
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    def help(self, parser=None):
 
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        """
 
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        Prints a help message.
 
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        :param parser: If supplied, the parser to use for generating help.  If \
 
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        not supplied, it is retrieved.
 
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        :type parser: cmdutil.CmdOptionParser
 
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        """
 
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        if parser==None:
 
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            parser=self.get_parser()
 
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        parser.print_help()
 
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def add_command(commands):
 
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    commands["show-changeset"] = ShowChangeset
 
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# arch-tag: 04abf5e0-b961-4367-9c47-d2d25f8f0ddb