#!/bin/bash

#
#    Copyright (c) 2006 Alexander Panek
#
# This software is provided 'as-is', without any express or implied warranty.
# In no event will the authors be held liable for any damages arising from the
# use of this software.
#
# Permission is granted to anyone to use this software for any purpose,
# including commercial applications, and to alter it and redistribute it
# freely, subject to the following restrictions:
#
# 1. The origin of this software must not be misrepresented; you must not claim
#    that you wrote the original software. If you use this software in a
#    product, an acknowledgment in the product documentation would be 
#    appreciated but is not required.
#
# 2. Altered source versions must be plainly marked as such, and must not
#    be misrepresented as being the original software.
#
# 3. This notice may not be removed or altered from any source distribution.
#

DMD_MIRROR=http://ftp.digitalmars.com/dmd.zip
MAN_DIR=/usr/share/man/man1
PREFIX=/usr/local
NOROOT=0
DMD_DOWNLOAD=0
TANGO_DOWNLOAD=0

die() {
	echo "$1"
	exit 0
}

usage() {
	echo 'Usage: install-dmd.sh <install prefix> [OPTIONS]'
	echo ''
	echo 'Options:'
	echo '  --download: Download a fresh copy of DMD and Tango'
	echo '  --no-root: Do not install man pages, /etc/dmd.conf or any other
	pieces, that would require root access'
	echo '  --uninstall: Uninstall Tango and DMD'
	echo '  --uninstall-tango: Uninstall only Tango and switch back to Phobos'
	echo ' '
}

download_dmd() {
	echo "Downloading dmd.zip from \"${DMD_MIRROR}\"..."
	wget ${DMD_MIRROR} || die "Error downloading DMD. Aborting."
}

download_tango() {

}

unzip_dmd() {
	echo "Trying to extract dmd.zip..."

	if [ ! -f dmd.zip ]
	then
		die "Could not find dmd.zip. Please use --download or manually download the file from ${DMD_MIRROR}. Aborting."
	fi

	echo "  Creating temporary directory ./d..."
	mkdir d || die 'Could not create temporary directory ./d'

	echo "  Extracting..."
	unzip -q -d ./d dmd.zip || die 'Could not unzip dmd.zip. Aborting.'
}

copy_dmd() {
	echo "Copying compiler binaries..."
	mkdir -p ${PREFIX}/bin || die

	cp d/dmd/bin/dmd ${PREFIX}/bin || die
	cp d/dmd/bin/obj2asm ${PREFIX}/bin || die
	cp d/dmd/bin/dumpobj ${PREFIX}/bin || die
	cp d/dmd/bin/rdmd ${PREFIX}/bin || die
}

copy_doc() {
	mkdir -p {${PREFIX}/doc/dmd/samples, ${PREFIX}/doc/dmd/src} || die

	cp d/dmd/html/d/* ${PREFIX}/doc/dmd/ || die
	cp d/dmd/samples/d/* ${PREFIX}/doc/dmd/samples/ || die
	cp d/dmd/src/dmd/* ${PREFIX}/dmd/src/ || die
}

copy_lib() {
	mkdir -p ${PREFIX}/lib || die

	cp d/dmd/lib/libphobos.a ${PREFIX}/lib/ || die
	cp d/dmd/lib/phobos.lib ${PREFIX}/lib/ || die
}

copy_man() {
	cp d/dmd/man/man1/* ${MAN_DIR} || die
}

cleanup() {
	rm -r d/ || die
	if [ ${CLEANALL} = 1 ]
	then
		rm -r dmd.zip || die
	fi
}

for i in $*; 
do
	case "$i" in
		--download-dmd)
		DMD_DOWNLOAD=1
		;;
		--download-tango)
		TANGO_DOWNLOAD=1
		;;
		--download)
		DMD_DOWNLOAD=1
		TANGO_DOWNLOAD=1
		;;
	esac
done

if [ ${DMD_DOWNLOAD} = 1 ] then
	download_dmd
fi

if [ ${TANGO_DOWNLOAD} = 1 ] then
	download_tango
fi