#-
# Copyright (c) 2008 Juan Romero Pardines.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#-

#
# Extracts contents of distfiles specified in a template into
# the $wrksrc directory.
#
extract_distfiles()
{
	local pkg="$1"
	local count=
	local curfile=
	local cursufx=
	local lwrksrc=
	local ltar_cmd=
	local f=

	[ -f $XBPS_EXTRACT_DONE ] && return 0

	#
	# If we are being called via the target, just extract and return.
	#
	[ -n "$pkg" -a -z "$pkgname" ] && return 1

	#
	# There's nothing of interest if we are a meta template.
	#
	[ "$build_style" = "meta-template" ] && return 0

	for f in ${distfiles}; do
		count=$(($count + 1))
	done

	if [ $count -gt 1 ]; then
		if [ -z "$wrksrc" ]; then
			msg_error "\$wrksrc must be defined with multiple distfiles."
			exit 1
		fi
		mkdir $wrksrc
	fi

	msg_normal "Extracting $pkgname-$version distfile(s)."

	if [ -n "$tar_override_cmd" ]; then
		ltar_cmd="$tar_override_cmd"
	else
		ltar_cmd="tar"
	fi

	for f in ${distfiles}; do
		curfile=$(basename $f)

		if $(echo $f|grep -q '.tar.bz2'); then
			cursufx=".tar.bz2"
		elif $(echo $f|grep -q '.tbz'); then
			cursufx=".tbz"
		elif $(echo $f|grep -q '.tar.gz'); then
			cursufx=".tar.gz"
		elif $(echo $f|grep -q '.gz'); then
			cursufx=".gz"
		elif $(echo $f|grep -q '.bz2'); then
			cursufx=".bz2"
		elif $(echo $f|grep -q '.tgz'); then
			cursufx=".tgz"
		elif $(echo $f|grep -q '.tar'); then
			cursufx=".tar"
		elif $(echo $f|grep -q '.zip'); then
			cursufx=".zip"
		else
			msg_error "unknown distfile suffix for $curfile."
		fi


		if [ $count -gt 1 ]; then
			lwrksrc="$wrksrc/${curfile%$cursufx}"
		else
			lwrksrc="$XBPS_BUILDDIR"
		fi

		case ${cursufx} in
		.tar.bz2|.tbz)
			$ltar_cmd xfj $XBPS_SRCDISTDIR/$curfile -C $lwrksrc
			if [ $? -ne 0 ]; then
				msg_error "extracting $curfile into $lwrksrc."
			fi
			;;
		.tar.gz|.tgz)
			$ltar_cmd xfz $XBPS_SRCDISTDIR/$curfile -C $lwrksrc
			if [ $? -ne 0 ]; then
				msg_error "extracting $curfile into $lwrksrc."
			fi
			;;
		.gz|.bz2)
			mkdir -p $lwrksrc/$pkgname
			cp -f $XBPS_SRCDISTDIR/$curfile $lwrksrc/$pkgname
			cd $lwrksrc/$pkgname
			if [ "$cursufx" = ".gz" ]; then
				gunzip $curfile
			else
				bunzip2 $curfile
			fi
			;;
		.tar)
			$ltar_cmd xf $XBPS_SRCDISTDIR/$curfile -C $lwrksrc
			if [ $? -ne 0 ]; then
				msg_error "extracting $curfile into $lwrksrc."
			fi
			;;
		.zip)
			if [ -x $XBPS_MASTERDIR/usr/bin/unzip ]; then
				$XBPS_MASTERDIR/usr/bin/unzip \
					-q -x $XBPS_SRCDISTDIR/$curfile -d $lwrksrc
				if [ $? -ne 0 ]; then
					msg_error "extracting $curfile into $lwrksrc."
				fi
			else
				msg_error "cannot find unzip bin for extraction"
			fi
			;;
		*)
			msg_error "cannot guess $curfile extract suffix. ($cursufx)"
			;;
		esac
	done

	touch -f $XBPS_EXTRACT_DONE
}