spim

#!/bin/bash
arch='i686'

PRG=$0
#progname=`/bin/basename $0`

progname=`basename $0`

# Resolve symlinks, so that the pathname computations below find the
# directory structure they expect.
while [ -h "$PRG" ]; do
	# Get the target of the symlink.  N.B.:  We assume that neither the
	# link's value nor the pathname leading to it contains "-> ".
	ls=`/bin/ls -ld "$PRG"`
	link=`/usr/bin/expr "$ls" : '.*-> \(.*\)$'`
	# If the link is absolute, use it as is; otherwise, substitute it
	# into the leafname part of $PRG.
	case $link in 
	    /*) PRG="$link";;
	     *) PRG="`/usr/bin/dirname $PRG`/$link"
	esac
done

#COOL_INST=`/usr/bin/dirname "$PRG"`/..
COOL_INST=$(cd `dirname $0` && pwd)/..

# set environment for spim/xspim
DEFAULT_TRAP_HANDLER=$COOL_INST/lib/trap.handler
export DEFAULT_TRAP_HANDLER



# function to substitute an absolute path for a relative path
function getabspath {
    base=`basename "$1"`
    dir=`dirname "$1"`

    # use python if possible since i trust it more
    if [ `type -P asdfpython` ]; then
        abspath=`python -c 'import sys
import os
print os.path.abspath(sys.argv[1])' $1`
    # make sure the directory exists
    elif [ ! -d "$dir" ]; then
        echo "ERROR"
        exit 1
    else
        abspath=`cd "$dir"; pwd`/"$base"
    fi
    echo $abspath
}

# fix command line arguments to have relative paths rather than absolute paths
# if $1 is not a flag we assume it is a file
if [ ${1:0:1} != "-" ]; then
    abspath=`getabspath "$1"`
    if [ "$abspath" == "ERROR" ]; then
        echo "$progname: $1: No such file or directory." >&2
        exit 1
    fi
    set -- "$abspath" "${@:2}"
fi
for ((i=1; i<=$#; i++))  
do
    if [ "${!i}" == "-file" -o "${!i}" == "-execute" -o "${!i}" == "-trap_file" ]; then
        next=$(($i+1))
        nextnext=$(($i+2))
        abspath=`getabspath "${!next}"`
        if [ "$abspath" == "ERROR" ]; then
            echo "$progname: ${!next}: No such file or directory." >&2
            exit 1
        fi
        set -- "${@:1:$i}" "$abspath" "${@:$nextnext}"
    fi
done

xname=$COOL_INST/bin/.$arch/spim

cd $COOL_INST/bin

if [ -x $xname ]; then
  exec $xname "$@"
else
  echo spim is not compiled for $arch
fi