#!/bin/sh
#
# The contents of this file are subject to the Netscape Public License
# Version 1.0 (the "NPL"); you may not use this file except in
# compliance with the NPL.  You may obtain a copy of the NPL at
# http://www.mozilla.org/NPL/
#
# Software distributed under the NPL is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
# for the specific language governing rights and limitations under the
# NPL.
#
# The Initial Developer of this code under the NPL is Netscape
# Communications Corporation.  Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
# Reserved.
#

## 
## Usage:
##
## $ run-mozilla.sh [program]
##
## This script is meant to run a mozilla program from the mozilla
## source tree.  This is mostly useful to folks hacking on mozilla.
##
## A mozilla program is currently either viewer or apprunner.  The
## default is viewer.
##
## The script will setup all the environment voodoo needed to make
## mozilla work.

##
## Standard shell script disclaimer blurb thing:
##
## This script is a hcak.  Its brute force.  Its horrible.  
## It doesnt use Artificial Intelligence.  It doesnt use Virtual Reality.
## Its not perl.  Its not python.  It probably wont work unchanged on
## the "other" thousands of unices.  But it worksforme.
##
## If you have an improvement, patch, idea, whatever, on how to make this
## script better, post it here:
##
## news://news.mozilla.org/netscape.public.mozilla.patches
## news://news.mozilla.org/netscape.public.mozilla.unix
## 

##
## Potential improvements:
##
## + Run from anywhere in the tree.
## + Run ldd on the program and report missing dlls
## + Deal with NSPR in the tree
## + All the "other" unices
##

cmdname=`basename $0`

##
## Constants
##
MOZ_APPRUNNER_NAME="apprunner"
MOZ_VIEWER_NAME="viewer"

##
## Variables
##
MOZ_DIST_BIN=""
MOZ_PROGRAM=""

##
## Functions
##
moz_bail()
{
	message=$1

	echo
	echo "$cmdname: $message"
	echo

	exit 1
}

moz_test_binary()
{
	binary=$1

	if [ -f "$binary" ]
	then
		if [ -x "$binary" ]
		then
			return 1
		fi
	fi

	return 0
}

##
## Program name given in $1
##
if [ $# -gt 0 ]
then
	MOZ_PROGRAM=$1

	shift
fi

##
## Program not given, try to guess a default
##
if [ -z "$MOZ_PROGRAM" ]
then
	##
	## Try viewer
	## 
	moz_test_binary $MOZ_VIEWER_NAME

	if [ $? -eq 1 ]
	then
		MOZ_PROGRAM=$MOZ_VIEWER_NAME
	##
	## Try apprunner
	## 
	else
		moz_test_binary $MOZ_APPRUNNER_NAME

		if [ $? -eq 1 ]
		then
			MOZ_PROGRAM=$MOZ_APPRUNNER_NAME
		fi
	fi
fi

##
## Running the program from its source dir
##
if [ -f Makefile.in ]
then
	# Use DEPTH in the Makefile.in to determine the depth
	depth=`grep -w DEPTH Makefile.in  | grep -e "\.\." | awk -F"=" '{ print $2; }'`

	##
	## Make sure dist/bin exits
	##
	if [ ! -d $depth/dist/bin ]
	then
		moz_bail "$depth/dist/bin does not exist."
	fi

	# push
	here=`pwd`

	cd $depth/dist/bin

	MOZ_DIST_BIN=`pwd`

	# pop
	cd $here
else
	##
	## Running the program from dist/bin
	##
	if [ -d components -a -d res ]
	then
		MOZ_DIST_BIN=`pwd`
	fi
fi

##
## Make sure dist/bin is ok
##
if [ -z "$MOZ_DIST_BIN" ]
then
	moz_bail "Cannot access dir dist/bin directory."
fi

if [ ! -d $MOZ_DIST_BIN ]
then
	moz_bail "Cannot access dir dist/bin directory."
fi

##
## Make sure the program is executable
##
if [ ! -x $MOZ_PROGRAM ]
then
	moz_bail "Cannot execute $MOZ_PROGRAM."
fi

##
## Set MOZILLA_FIVE_HOME
##
MOZILLA_FIVE_HOME=$MOZ_DIST_BIN

##
## Set LD_LIBRARY_PATH
##
if [ -n "$LD_LIBRARY_PATH" ]
then
	LD_LIBRARY_PATH=${MOZ_DIST_BIN}${LD_LIBRARY_PATH+":$LD_LIBRARY_PATH"}
else
	LD_LIBRARY_PATH=${MOZ_DIST_BIN}
fi

echo "MOZILLA_FIVE_HOME=$MOZILLA_FIVE_HOME"
echo "  LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
echo "      MOZ_PROGRAM=$MOZ_PROGRAM"

export MOZILLA_FIVE_HOME LD_LIBRARY_PATH

exec ./$MOZ_PROGRAM ${1+"$@"}