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#! /bin/sh
# Conversion of an absolute path to a relative path.
# Copyright (c) 2008 by Marc Feeley, All Rights Reserved.
TARGET_PATH=`echo "$1" | sed -e 's#\\\\#/#g' -e 's#//*#/#g' -e 's#/$##' -e 's#\([/]\{0,1\}\)\(.*\)#\2/#' -e 's#^/$##'`
ORIG_DIR=`echo "$2" | sed -e 's#\\\\#/#g' -e 's#//*#/#g' -e 's#/$##' -e 's#\([/]\{0,1\}\)\(.*\)#\2/#' -e 's#^/$##'`
ENABLE_MV="$3"
while test "$TARGET_PATH" != "" -a "$ORIG_DIR" != ""; do
TP_CAR=`echo "$TARGET_PATH" | sed -e 's#\([^/]*[/]\)\(.*\)#\1#'`
TP_CDR=`echo "$TARGET_PATH" | sed -e 's#\([^/]*[/]\)\(.*\)#\2#'`
OD_CAR=`echo "$ORIG_DIR" | sed -e 's#\([^/]*[/]\)\(.*\)#\1#'`
OD_CDR=`echo "$ORIG_DIR" | sed -e 's#\([^/]*[/]\)\(.*\)#\2#'`
if test "$TP_CAR" = "$OD_CAR"; then
TARGET_PATH="$TP_CDR"
ORIG_DIR="$OD_CDR"
else
break
fi
done
REL_PATH=`echo "$ORIG_DIR" | sed -e 's#[^/]*[/]#../#g'`"$TARGET_PATH"
if test "$ENABLE_MV" = "yes"; then
echo "$REL_PATH" | sed -e 's#^#/#' -e 's#^\(.*/\)\([^/][^/]*\)/\([^/][^/]*\)/$#\1current/\3/#' -e 's#^/##'
else
echo "$REL_PATH"
fi
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