#! /bin/sh
#
# Copyright (C) 1997, 1999 Free Software Foundation, Inc.
#
# Author: Scott Predescu <ovidiu@net-community.com>
# Author: Ovidiu Predescu <ovidiu@net-community.com>
# Date: February 1999
# 
# This file is part of the GNUstep Makefile Package.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# You should have received a copy of the GNU General Public
# License along with this library; see the file COPYING.LIB.
# If not, write to the Free Software Foundation,
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# Try to execute the GNUstep tool passed as argument. The tool is
# searched through the GNUstep directories if a complete or relative path name
# is not specified. The arguments passed after the tool name are passed
# unmodified to the tool.

if [ -z "$1" ]; then
  echo usage: `basename $0` [--library-combo=...] tool [arguments...]
  echo `basename $0` --help for help
  exit 1
fi

if [ -z "$EXEEXT" ]; then
  EXEEXT=
fi

# traps the parameters
case $1 in
  --help)
    echo usage: `basename $0` [--library-combo=...] tool [arguments...]
    echo
    echo [--library-combo=...] specifies a GNUstep backend to use.
    echo It overrides the default LIBRARY_COMBO environment variable.
    echo --library-combo=gnu-xdps for GNUstep XDPS Backend
    echo --library-combo=gnu-xraw for GNUstep XRaw Backend
    echo --library-combo=fd-xraw for GNUstep XRaw Backend with libFoundation
    echo --library-combo=fd-xdps for GNUstep XDPS Backend with libFoundation
    echo --library-combo=nx for NeXT OPENSTEP
    echo
    echo tool is the complete or relative name of the tool executable
    echo without any extension, like dread.
    echo
    echo [arguments...] are the arguments to the tool.
    exit 0
    ;;
  --library-combo=*)
    LIBRARY_COMBO=`echo $1 | sed 's/--library-combo=//'`
    if [ -z "$2" ]; then
      echo usage: `basename $0` [--library-combo=...] tool [arguments...]
      echo `basename $0` --help for help
      exit 1
    fi
    tool=$2; shift; shift
    ;;
  *)
    tool=$1; shift;;
esac

# TODO: these defaults need to be output to the user
if [ "$LIBRARY_COMBO" = nx ]; then
  LIBRARY_COMBO=nx-nx-nx-nil
elif [ "$LIBRARY_COMBO" = gnu-xdps ]; then
  LIBRARY_COMBO=gnu-gnu-gnu-xdps
elif [ "$LIBRARY_COMBO" = gnu-xraw ]; then
  LIBRARY_COMBO=gnu-gnu-gnu-xraw
elif [ "$LIBRARY_COMBO" = fd-xraw ]; then
  LIBRARY_COMBO=gnu-fd-gnu-xraw
elif [ "$LIBRARY_COMBO" = fd-xdps ]; then
  LIBRARY_COMBO=gnu-fd-gnu-xdps
fi
export LIBRARY_COMBO

# Remove leading slashes at the end of the tool name
tool=`echo $tool | sed 's%/*$%%'`

if [ -z "$EXEEXT" ]; then
  tool=$tool$EXEEXT
fi

#
# Determine the host information
#
if [ -z "$GNUSTEP_HOST" ]; then
    GNUSTEP_HOST=`(cd /tmp; $GNUSTEP_SYSTEM_ROOT/Makefiles/config.guess)`
    export GNUSTEP_HOST
fi
if [ -z "$GNUSTEP_HOST_CPU" ]; then
    GNUSTEP_HOST_CPU=`$GNUSTEP_SYSTEM_ROOT/Makefiles/cpu.sh $GNUSTEP_HOST`
    GNUSTEP_HOST_CPU=`$GNUSTEP_SYSTEM_ROOT/Makefiles/clean_cpu.sh $GNUSTEP_HOST_CPU`
    export GNUSTEP_HOST_CPU
fi
if [ -z "$GNUSTEP_HOST_VENDOR" ]; then
    GNUSTEP_HOST_VENDOR=`$GNUSTEP_SYSTEM_ROOT/Makefiles/vendor.sh $GNUSTEP_HOST`
    GNUSTEP_HOST_VENDOR=`$GNUSTEP_SYSTEM_ROOT/Makefiles/clean_vendor.sh $GNUSTEP_HOST_VENDOR`
    export GNUSTEP_HOST_VENDOR
fi
if [ -z "$GNUSTEP_HOST_OS" ]; then
    GNUSTEP_HOST_OS=`$GNUSTEP_SYSTEM_ROOT/Makefiles/os.sh $GNUSTEP_HOST`
    GNUSTEP_HOST_OS=`$GNUSTEP_SYSTEM_ROOT/Makefiles/clean_os.sh $GNUSTEP_HOST_OS`
   export GNUSTEP_HOST_OS
fi

if [ "$LIBRARY_COMBO" = nx-nx-nx-nil -a $GNUSTEP_HOST_OS = nextstep4 ]; then
  if [ -f "$full_toolname/library_paths.openapp" ]; then
    additional_library_paths="`cat $full_toolname/library_paths.openapp`"
  fi
else
  if [ -f "$full_toolname/$GNUSTEP_HOST_CPU/$GNUSTEP_HOST_OS/$LIBRARY_COMBO/library_paths.openapp" ]; then
    additional_library_paths="`cat $full_toolname/$GNUSTEP_HOST_CPU/$GNUSTEP_HOST_OS/$LIBRARY_COMBO/library_paths.openapp`"
  fi
fi

case $tool in
  /*)	# An absolute path.
  	full_toolname=$tool;;
  */*)	# A relative path
	full_toolname=`(cd $tool; pwd)`;;
  *)	# A path that should be searched into GNUstep tool paths
	GNUSTEP_HOST_DIR=$GNUSTEP_HOST_CPU/$GNUSTEP_HOST_OS
	
	# search for a local one
	for file in */$GNUSTEP_HOST_DIR/$LIBRARY_COMBO/$tool; do
	  if [ -x $file ]; then
	    full_toolname=$file;
	    break;
          fi
        done

	# search in the user/local/system
	SPATH=$SPATH:$GNUSTEP_USER_ROOT/Tools/$GNUSTEP_HOST_DIR
	SPATH=$SPATH:$GNUSTEP_USER_ROOT/Tools/$GNUSTEP_HOST_DIR/$LIBRARY_COMBO
	SPATH=$SPATH:$GNUSTEP_LOCAL_ROOT/Tools/$GNUSTEP_HOST_DIR
	SPATH=$SPATH:$GNUSTEP_LOCAL_ROOT/Tools/$GNUSTEP_HOST_DIR/$LIBRARY_COMBO
	SPATH=$SPATH:$GNUSTEP_SYSTEM_ROOT/Tools/$GNUSTEP_HOST_DIR
	SPATH=$SPATH:$GNUSTEP_SYSTEM_ROOT/Tools/$GNUSTEP_HOST_DIR/$LIBRARY_COMBO
	SPATH=$SPATH:$PATH
	IFS=:
	for dir in $SPATH; do
	  if [ -x $dir/$tool ]; then
	    full_toolname=$dir/$tool;
	    break;
	  fi
	done;;
esac

if [ -z "$full_toolname" ]; then
  echo "Can't find the required tool: $tool!"
  exit 1
fi

# Load up LD_LIBRARY_PATH
# this needs to be PATH on NT
. $GNUSTEP_SYSTEM_ROOT/Makefiles/ld_lib_path.sh

IFS=" "
$full_toolname $@