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Viewing changes to lib/stdhome/command_init.py

  • Committer: Tim Marston
  • Date: 2014-02-12 21:51:08 UTC
  • Revision ID: tim@ed.am-20140212215108-stk5z0nlvgpi4oa8
added bzr as a vcs backend; finished init command; implemented deployment

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lib/stdhome/command_init.py
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# init.py
 
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# command_init.py
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#
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# Copyright (C) 2013 Tim Marston <tim@edm.am>
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#
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import sys, os, re, getopt, shutil, subprocess
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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 InitCommand( Command ):
 
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import the
 
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from deployment import Deployment
 
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from subprocess import Popen
 
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class CommandInit:
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        def __init__( self ):
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                self.quiet = False
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                self.vcs = the.config.default_vcs
 
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                self.repo = None
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        def print_help( self ):
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                print "hostname, it is internally expanded to scp://HOSTNAME/~/.stdhome/REPO)."
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                print
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                print "Options:"
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                print "      --quiet      do not report changes to the home directory"
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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 "      --vcs=VCS    select the version control system"
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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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                        [ "quiet", "repo=", "vcs=", "verbose", "help" ] )
 
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                        [ "repo=", "verbose", "help" ] )
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                for opt, optarg in opts:
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                        if opt == "--quiet":
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                                self.quiet = 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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                        elif opt == "--vcs":
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                                self.vcs = 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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                # URL argument
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                self.url = args[ 0 ].strip() if len( args ) else None
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                # check remaining arguments
 
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                # remaining arguments
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                if len( args ) > 1:
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                        raise the.program.UsageError( 'too many arguments' )
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        def run( self ):
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                # set up repo and check it *doesn't* already exists
 
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                the.set_repo( self.repo )
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                the.repo.check_dir_exists( False )
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                the.repo.set_vcs( self.vcs )
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                # ensure our top-level directory exists
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                if not os.path.exists( the.full_dir ):
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                if self.url:
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                        # expand url if it's a simple hostname
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                        if re.search( '^[0-9a-zA-z.]+$', self.url ):
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                                self.url = the.repo.vcs.expand_repo_url( self.url )
 
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                        if re.match( '^[0-9a-zA-z.]+$', self.url ):
 
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                                self.url = 'sftp://%s/%s/%s' % \
 
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                                                   ( self.url, the.dir, the.repo.name )
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                        # initialise deployment (with an empty repo)
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                        deployment = Deployment()
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                        deployment.copy_in()
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                        # perform bzr checkout
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                        if the.verbose >= 1: print "checking out %s" % the.repo.dir
 
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                        if the.verbose: print "checking out %s" % the.repo.dir
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                        try:
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                                the.repo.vcs.checkout( self.url )
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                        except Exception:
 
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                        except Exception as e:
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                                # attempt to clean-up repo dir
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                                if os.path.exists( the.repo.full_dir ):
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                                        try:
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                                                shutil.rmtree( the.repo.full_dir )
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                                        except OSError:
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                                                pass
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                                raise
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                        message = ''
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                        # check for deployment conclicts
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                        conflicts = deployment.get_conflicts()
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                        if conflicts:
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                                message += 'deployment conflicts:\n  %s' % \
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                                                   '\n  '.join( conflicts )
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                        # stop if there are conflicts
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                        if message:
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                                raise the.program.FatalError(
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                                        'there were conflicts...\n' + message )
 
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                                try:
 
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                                        shutil.rmtree( the.repo.full_dir )
 
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                                except OSError:
 
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                                        pass
 
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                                raise e
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                        # perform deployment
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                        deployment.copy_out( self.quiet )
 
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                        try:
 
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                                deployment.copy_out()
 
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                        except deployment.Conflict as e:
 
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                                raise the.program.FatalError( e.msg )
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                else:
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                        # perform bzr init
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                        if the.verbose >= 1: print 'initialising %s' % the.repo.dir
 
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                        if the.verbose: print 'initialising %s' % the.repo.dir
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                        try:
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                                the.repo.vcs.init()
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                        except Exception:
 
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                        except Exception as e:
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                                # attempt to clean-up repo dir, and die
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                                if os.path.exists( the.repo.full_dir ):
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                                        try:
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                                                shutil.rmtree( the.repo.full_dir )
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                                        except OSError:
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                                                pass
 
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                                try:
 
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                                        shutil.rmtree( the.repo.full_dir )
 
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                                except OSError:
 
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                                        pass
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                                raise
 
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                                raise e