#!/bin/sh
# $Source$
# $State$

# Set up default variables.

destdir=
srcdir=`pwd`
aal=/usr/local/bin/aal
delete=no
copy="ln"

# --- Options parsing -------------------------------------------------------

while [ "$1" != "" ]; do
	case "$1" in
		-s|--srcdir)
			srcdir="$2"
			shift
			;;
			
		-d|--destdir)
			destdir="$2"
			shift
			;;
			
		-x|--delete)
			delete=yes
			;;
			
		-c|--copy)
			copy="cp -Rp"
			;;
			
		-S|--symlink)
			copy="ln -s"
			;;
			
		-a|--aal)
			aal="$2"
			shift
			;;
			
		-h|--help)
			echo "mkdist [options]"
			echo "Options are:"
			echo "  -s --srcdir <path>   The CVS tree to read from. (default: CWD)"
			echo "  -d --destdir <path>  The directory to create the distribution in."
			echo "  -x --delete          Erase the destination directory first."
			echo "  -c --copy            Make physical copies of the files. (default: hardlink)"
			echo "  -S --symlink         Make symbolic links instead of copying or hardlinking."
			echo "  -a --aal <path>      Where the ACK 'aal' tool is."
			echo "  -h --help            Display this message."
			exit 0
			;;
			
		*)
			echo "Unrecognised option. Try --help for help."
			exit 1
	esac
	shift
done

if [ "$destdir" = "" ]; then
	echo "You must specify a destination directory. (Try --help for help.)"
	exit 1
fi

# --- Main routines ---------------------------------------------------------

# These two routines do the work of traversing the source tree and building
# the distribution tree.

addfile() {
	local f
	f="${1##$srcdir/}"
	mkdir -p $destdir/`dirname $f`
	$copy "$1" "$destdir/$f"
}

process_dir() {
	local path
	local archivename
	
	path=$1
	cd $path
	echo $PWD
	
	# Look for a LIST file and cache the first line.
	
	archivename=
	if [ -f LIST ]; then
		archivename=`head -1 LIST`
	fi

	for i in `cat $path/.distr`; do
		case "$i" in
			\#*)	# Comment. Do nothing.
					;;
					
			*)
					if [ -d $i ]; then
						# This is a directory. Recurse into it.
						
						( process_dir $path/$i )
					elif [ -f $i ]; then
						# This is a file.
						
						addfile $path/$i
					elif [ "$i" = "$archivename" ]; then
						# Build the named archive.
			
						$aal cDr `cat LIST`
						addfile $path/$archivename
					else
						echo "Don't know what to do with $i, listed in $PWD/.distr."
						exit 1
					fi
					;;
		esac
	done
}

# --- Main program ----------------------------------------------------------

# Test to make sure that $aal points to the right thing.

if !(strings $aal | grep archiver > /dev/null); then
	echo "$aal does not seem to point at the ACK archiver tool."
	echo ""
	echo "Press RETURN to go ahead anyway, or CTRL+C to abort."
	read ignored
fi

# Actually do the work.

echo "Creating distribution from CVS tree: $srcdir"
echo "              into destination tree: $destdir"
echo ""

if [ -e $destdir ]; then
	if [ "$delete" = "yes" ]; then
		echo "Press RETURN to erase $destdir and its contents, or CTRL+C to abort."
		read _ _
		echo "Erasing..."
		rm -rf "$destdir"
	else
		echo "$destdir exists. Aborting."
		exit 1
	fi
fi

echo "Working..."
mkdir -p $destdir
process_dir $srcdir
echo "Done."

# Revision history
# $Log$
# Revision 1.5  2007-04-24 19:48:41  dtrg
# Removed bashish.
#
# Revision 1.4  2007/02/25 20:56:41  dtrg
# Performed major renovations to make the script work on OpenBSD.
#
# Revision 1.3  2007/02/24 02:05:56  dtrg
# Removed some bashish; added comment support; removed the make
# distr functionality, as nothing was using it any more and it was
# causing problems.
#
# Revision 1.2  2005/06/24 23:19:23  dtrg
# Added new mkdist tool.
#
# Revision 1.1  2005/06/24 22:13:57  dtrg
# Created new tool to generate distributions.