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Viewing changes to lib/stdhome/command_stage_revert.py

  • Committer: Tim Marston
  • Date: 2014-02-12 21:51:49 UTC
  • Revision ID: tim@ed.am-20140212215149-msaxl7vo98il5i4a
added more commands

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lib/stdhome/command_stage_revert.py
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# stage_revert.py
 
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# command_stage_revert.py
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#
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# Copyright (C) 2014 Tim Marston <tim@edm.am>
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#
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import sys, re, getopt
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from .command import Command
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import stdhome.the as the
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from stdhome.deployment import Deployment
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class StageRevertCommand( Command ):
 
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import the
 
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from deployment import Deployment
 
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class CommandStageRevert:
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        def __init__( self ):
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                self.force = False
 
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                self.repo = None
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        def print_help( self ):
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                print("Usage: " + the.program.name + " stage-revert [--repo=REPO]")
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                print()
 
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                print "Usage: " + the.program.name + " update [--repo=REPO]"
 
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                print
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                #      01234567890123456789012345678901234567890123456789012345678901234567890123456789
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                print("Revert any modifications made to a local repository, losing those changes.")
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                print()
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                Command.print_stage_commands_notice()
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                print()
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                print("If you have not used any of the staging commands, it is probably safe to revert")
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                print("a local repository and doing so will allow many primary commands (such as add")
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                print("and remove) to work again.")
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                print()
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                print("Options:")
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                print("      --force      force revert of stage (when there is a problem)")
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                print("  -r, --repo=REPO  select the repo to check-out or create (defaults to 'home')")
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                print("  -v, --verbose    display information about what is being done")
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                print("      --help       display help and exit")
 
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                print "Revert any modifications made to a local repository, losing those changes."
 
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                print
 
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                print "In addition to using the add and remove commands, you can also manually modify"
 
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                print "the files in a local repository and then commit them to a remote repository as"
 
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                print "required.  This can be done with the staging commands."
 
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                print
 
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                print "When files in your local repository have been modified, several of the primary"
 
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                print "commands of this program will not be able to function.  This command reverts all"
 
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                print "modifications to a local repository so that the primary commands can work again."
 
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                print "If you have not used any of the staging commands, it is safe to revert a local"
 
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                print "repository."
 
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                print
 
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                print "Options:"
 
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                print "  -r, --repo=REPO  select the repo to check-out or create (defaults to 'home')"
 
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                print "  -v, --verbose    display information about what is being done"
 
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                print "      --help       display help and exit"
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                exit( 0 )
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        def parse_command_line( self ):
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                opts, args = getopt.gnu_getopt(
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                        sys.argv[ 1: ], "r:v",
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                        [ "force", "repo=", "verbose", "help" ] )
 
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                        [ "repo=", "verbose", "help" ] )
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                for opt, optarg in opts:
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                        if opt == "--force":
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                                self.force = True
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                        elif opt in [ '--repo', '-r' ]:
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                                if not re.search( '^[-a-zA-z0-9.]+$', optarg ):
 
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                        if opt in [ '--repo', '-r' ]:
 
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                                if not re.match( '^[-a-zA-z0-9.]+$', optarg ):
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                                        raise the.program.FatalError(
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                                                'invalid repository name: ' + optarg )
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                                the.repo = optarg
 
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                                self.repo = optarg
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                        elif opt in [ '--verbose', '-v' ]:
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                                the.verbose += 1
 
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                                the.verbose = True
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                        elif opt == "--help":
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                                self.print_help()
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                # discard first argument (the command)
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                args.pop( 0 )
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        def run( self ):
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                # set up repo and check it exists
 
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                the.set_repo( self.repo )
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                the.repo.check_dir_exists()
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                # initialise deployment
 
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                # check there isn't a deployment in progress
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                deployment = Deployment()
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                if deployment.is_ongoing() and deployment.get_initial_revno() is None \
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                   and not self.force:
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                        raise RuntimeError(
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                                "can't revert ongoing deployment: initial revno is missing!\n"
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                                "use --force to override, but an update may miss changes!" )
 
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                deployment.check_ongoing( False )
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                # check for local changes
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                if the.verbose >= 1: print("reverting %s" % the.repo.dir)
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                the.repo.vcs.revert( deployment.get_initial_revno() )
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                # remove deployment state
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                deployment.remove_deployment_state()
 
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                if the.verbose: print "reverting %s" % the.repo.dir
 
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                the.repo.vcs.revert()