#!/usr/bin/env python

import re;
from os import path as ospath;


# (1) Initialisation
#--------------------------------------------------------#
# (1) Get absolute path #
ROOT = ospath.dirname(ospath.dirname(ospath.realpath(__file__)));





# (2) Class declaration
#--------------------------------------------------------#
class Class:

	_grp_re = r'^\[-\] (?P<name>.+)$';
	_pkg_re = r'^(?P<pad>\s+)\[[ x\.]\] (?P<name>[\w\.-]+)(?:\s*(?P<deb>\[deb\])|(?:\s*\[(?P<ppa>[\w\.-]+\/[\w\.-]+)\]))?(?:\s*# (?P<com>.+))?\s*$';

	# (1) Constructor
	#
	# @file<String>						Manifest file
	#
	#--------------------------------------------------------#
	def __init__(self):
		# (1) Try to read manifest path #
		self._path = None;

		with open( "%s/manifest" % ROOT, 'r' ) as f:
			self._path = f.readline();

		# (2) Manage error #
		if( self._path == None ):
			raise Exception('No manifest file given');

		# (3) Initialize attributes #
		self._grp = [];
		self._pkg = {};



	# (2) Parser method
	#
	#--------------------------------------------------------#
	def _parse(self):

		# (0) Init
		#--------------------------------------------------------#
		# (1) Create group matcher #
		grpMatcher = re.compile(self._grp_re);

		# (2) Create pkg matches #
		pkgMatcher = re.compile(self._pkg_re);

		# (3) Local variables #
		grp      = False;
		grp_name = None;



		# (2) Search for groups
		#--------------------------------------------------------#
		with open( "%s" % self._path, 'r' ) as f:

			for l,line in enumerate(f):

				# (1) If seeking for group #
				if( grp == False ):

					## {1} Check regex with the line ##
					match = grpMatcher.search(line);

					## {2} If don't match -> pass ##
					if( match == None ):
						continue;

					## {3} Register group ##
					grp = True;
					grp_name = match.group('name');
					self._grp.append( grp_name );
					self._pkg[grp_name] = [];

				# (2) If seeking for group's packages #
				else:
					## {1} Check regex with the line ##
					match = pkgMatcher.search(line);

					## {2} If don't match -> back to group seeking ##
					if( match == None ):
						grp = False;
						continue;

					## {3} Register package ##
					pkg = {
						'pad':    len(match.group('pad')),
						'name':   match.group('name'),
						'is_deb': match.group('deb') != None,
						'ppa':    match.group('ppa') if match.group('ppa') != None else None,
						'com':    match.group('com') if match.group('com') != None else None
					};
					self._pkg[grp_name].append(pkg);


		print self._grp;
		print self._pkg;