#! /usr/bin/python2
#
# Copyright(c) 2004, Karl Trygve Kalleberg <karltk@gentoo.org>
# Copyright(c) 2004, Gentoo Foundation
#
# Licensed under the GNU General Public License, v2
#
# $Header: /var/cvsroot/gentoo-src/javatoolkit/src/javatoolkit/classpath.py,v 1.4 2004/11/08 20:06:06 karltk Exp $

class ClasspathIter:
	"""An iterator for the Classpath class, below."""
    
	def __init__(self, classpath):
		self._classpath = classpath
		self._index = 0
        
	def next(self):
		self._index += 1
		if self._index >= len(self._classpath.classpath):
			raise StopIteration
		return self._classpath.classpath[self._index]

         
class Classpath:
	"""A classpath object provides a collection interface to the elements of a : separated	path list. """
	
	def __init__(self, classpath_string = None):
		if classpath_string != None:
			cs = classpath_string.strip().strip("\"")
			self.classpath = cs.split(":")
		else:
			self.classpath = []
			
	
	def __iter__(self):
		"""Returns iterator. Elements of the original classpath string are considered split by ':'."""

		return ClasspathIter(self)


	def __len__(self):
		"""Returns length (number of elements) in this classpath."""

		return len(self.classpath)


	def __getitem__(self, i):
		"""Returns i'th element."""

		return self.classpath[i]


	def __setitem__(self, i, val):
		"""Sets i'th element."""

		self.classpath[i] = val
        

	def __str__(self):
		"""Constructs a suitable string representation of the classpath."""

		return ":".join(self.classpath)


	def append(self, element):
		"""Appends an path to the classpath."""

		self.classpath.append(element)

		
if __name__ == "__main__":
	print "This is not an exectuable module"