#!/bin/sh
# 
# relpath -- construct path relative to cwd
# 
#   Copyright (C) 1996-2004 by Ian Piumarta and other authors/contributors
#                              listed elsewhere in this file.
#   All rights reserved.
#   
#   This file is part of Unix Squeak.
# 
#    Permission is hereby granted, free of charge, to any person obtaining a copy
#    of this software and associated documentation files (the "Software"), to deal
#    in the Software without restriction, including without limitation the rights
#    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#    copies of the Software, and to permit persons to whom the Software is
#    furnished to do so, subject to the following conditions:
#  
#    The above copyright notice and this permission notice shall be included in
#    all copies or substantial portions of the Software.
#  
#    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#    SOFTWARE.
# 
# Author: Ian.Piumarta@INRIA.Fr
# 
# Last edited: 2006-10-18 10:12:08 by piumarta on emilia.local

if test $# -ne 2; then
  echo "usage: $0 srcdir path"
fi

cwd=$1
path=$2

for dir in `echo $cwd | tr '/' ' '`; do
  if expr $path : "/$dir" >/dev/null; then
    path=`echo $path | sed "s,^/$dir,,"`
    cwd=`echo $cwd | sed "s,^/$dir,,"`
  fi
done

path=`echo $path | sed 's,^/,,'`

for dir in `echo $cwd | tr '/' ' '`; do
  path="../$path"
done

echo $path
