#!/bin/bash 
# BuildSBO script
# by Chess Griffin <chess at chessgriffin dot com>
# 
# The BuildSBO script is intended to be used with the Slackbuilds.org
# repository of Slackware build scripts.  Suggested usage is to
# first mirror the Slackbuilds.org repository with rsync or ftp and
# then run the BuildSBO script in the top level directory of the local 
# Slackbuilds.org mirror.  Simply calling the script with a slackbuild
# name will do three things:  download the source code, check the 
# md5sum, and then run the slackbuild script for that package.  The 
# BuildSBO script must be run as root since it runs the Slackbuild 
# script and builds the package in /tmp.  Once the package is built,
# the user will need to install the package as root with installpkg.  
#
# One can also use a -r switch to rsync with the slackbuilds.org 
# repository.
#
# Example 1:  ./buildsbo -r foo
#
# This will first rsync with slackbuilds.org and then fetch and build
# the foo package.  Be sure to do this in a separate directory such as
# /home/user/sbo.
# 
# Example 2:  ./buildsbo foo
#
# This will fetch and build the foo package.
# 
#
# Changelog:
# v0.1	2006-06-22	Initial release

 
# Version number
VER=0.1

# Usage
function usage {
echo "BuildSBO v"$VER"
Usage: $0 [options] packagename
Options are:

	-r, --rsync	Rsync with the Slackbuilds.org respository
	-h, --help	Display this help message
"
}

while [ "$1" != "" ]; do
	case $1 in
		-r|--rsync )	RSY=1
				PKG=$2
			;;
		-h|--help )	usage
				exit
			;;
		*	)	PKG=$1
			;;
	esac
	shift
done

# Error check
if [ -z "$RSY" -a -z "$PKG" ];
	then echo "No options or package names given.  Run $0 -h for usage.   Exiting." 
	exit
fi

# Do rsync if -r switch is used
if [ -n "$RSY" ];
	then echo "Rsyncing with Slackbuilds.org repository into current directory."
	/usr/bin/rsync -avz slackbuilds.org::slackbuilds .
fi

if [ -n "$RSY" -a -z "$PKG" ];
	then echo "Done."
	exit
fi

# Search for package name
if [ ! `find -name "$PKG"` ];
	then echo "Packagename not found.  Exiting."
	exit
fi

# Variables
PKGPATH=`find -name $PKG`  
PKGNAME=`echo $PKG | sed 's/.*\///'`
DNLD=`grep DOWNLOAD $PKGPATH/$PKG.info | sed -e s/DOWNLOAD=//`
SRCNAME=`echo $DNLD | sed 's/.*\///'`
MD5=`grep MD5SUM $PKGPATH/$PKG.info | sed -e s/MD5SUM=//`
CWD=$(pwd)

# Start fetching and building
cd $PKGPATH
if [ ! -e "$SRCNAME" ]; 
	then echo "Downloading source code for "$SRCNAME"..."
	wget $DNLD || exit 1
fi
echo "Checking MD5SUM for "$SRCNAME"..."
MD5CHK=`md5sum $SRCNAME | sed -e 's/ .*$//'`
if [ "$MD5CHK" == $MD5 ]; 
	then echo "OK"
	else echo "MD5SUM check failed.  Exiting." exit
fi
echo "Building Slackware package for "$SRCNAME"..."
sh $PKG.SlackBuild
cd $CWD
echo "Done."
exit