/stdhome

# repo.py

#

# Copyright (C) 2013 to 2014 Tim Marston <tim@edm.am>

#

# This file is part of stdhome (hereafter referred to as "this program").

# See http://ed.am/dev/stdhome for more information.

#

# 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/>.

import os

from . import the, util

from .vcs.vcs import Vcs

class Repo:

	def __init__( self, name ):

		self.name = name

		self.dir = os.path.join( the.dir, self.name )

		self.full_dir = util.canonicalise_path( self.dir )

		self.vcs = False

	def check_dir_exists( self, should_exist = True ):

		if os.path.exists( self.full_dir ) != should_exist:

			error = 'does not exist' if should_exist else 'already exists'

			raise the.program.FatalError(

				'repository %s: %s' % ( error, self.dir ) )

	def detect_vcs( self ):

		if os.path.exists( self.full_dir ):

			for vcs in Vcs.vcses:

				instance = Vcs.instantiate_vcs( vcs, self.full_dir )

				if instance.has_authority():

					if the.verbose >= 2: print("repo vcs: %s" % vcs)

					self.vcs = instance

					break

			if self.vcs == False:

				raise the.program.FatalError(

					'unknown vcs in repository: %s' % self.dir )

	def set_vcs( self, vcs ):

		if Vcs.vcses.count( vcs ) == 1:

			self.vcs = Vcs.instantiate_vcs( vcs, self.full_dir )

			if the.verbose >= 2: print("repo vcs: %s" % vcs)

		else:

			raise the.program.FatalError( 'unknown vcs requested: %s' % vcs )

	def __str__( self ):

		return "Repo( %s: %s )" % ( self.name, self.dir )