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#!/bin/bash
#
# ipkg-push: push .ipk files to a package repository site
#
# We assume that all packages follow this naming scheme: 
#
# packagename_1.2.3-2_arch.ipk
# ^^^^^^^^^^^ ^^^^^ ^ ^^^^----- architecture
#     \         \   `---------- ipkg package revision
#      \         `------------- upstream package revision
#       `---------------------- package name
#
# And we assume that, if a package is named after this scheme it is
# versioned internally using the same one :-)
# 


. `dirname $0`/libptxdist.sh

PREFIX=`basename $0`

usage() {
	echo 
	[ -n "$1" ] && echo -e "${PREFIX} error: $1\n"
	echo "usage: $0 <args>"
	echo
	echo " Arguments:"
	echo
	echo "  --ipkgdir  <ipkgdir>       use this directory as an ipkg package source"
	echo "  --repodir  <repositorydir> path to ipkg package repository to be updated"
	echo "  --revision <revision>      dist revision name to be updated"
	echo "  --project  <projectname>   project name"
	echo "  --dist     <distname>      use this to make a dist release (optional)"
	echo "  --type     <package type>  specify package type (default: ipkg)"
	echo
	exit 1
}

IPKGDIR=
REPODIR=
DISTREVISION=
PROJECT=
DIST=
TYPE=ipkg


#
# Option parser
#
while [ $# -gt 0 ]; do
	case "$1" in 
		--help) usage ;;
		--ipkgdir)  IPKGDIR=`ptxd_abspath $2`;      shift 2 ;;
		--repodir)  REPODIR=`ptxd_abspath $2`;      shift 2 ;;
		--revision) DISTREVISION=`ptxd_abspath $2`; shift 2 ;;
		--project)  PROJECT=$2;	                    shift 2 ;;
		--dist)     DIST=$2;                        shift 2 ;;
		--type)     TYPE=$2;                        shift 2 ;;
		*)  usage "unknown option $1" ;;
  	esac
done

#
# Sanity checks
#
[ -z "$IPKGDIR" ] 	&& usage "${PREFIX} error: specify ipkg package dir with --ipkgdir"
[ -z "$REPODIR" ] 	&& usage "${PREFIX} error: specify repository dir with --repodir"
[ -z "$DISTREVISION" ]	&& usage "${PREFIX} error: specify dist revision with --revision"
[ -d "$IPKGDIR" ]	|| usage "${PREFIX} error: ipkg directory does not exist"
[ -d "$REPODIR" ]	|| usage "${PREFIX} error: repository dir does not exist"
[ -z "$PROJECT" ]       && usage "${PREFIX} error: specify a project name with --project"

if [ "`find $IPKGDIR -name "*.ipk"`" = "" ]; then
	echo "no ipkg packages found in --ipkgdir $IPKGDIR"
	exit 0
fi

IPKG_PACKAGES=`find $IPKGDIR -maxdepth 1 -name "*.ipk" -exec basename \{} \;`
SCRIPTDIR=`dirname $0`
POOL=$REPODIR/$PROJECT/pool

if [ ! -d "$POOL" ]; then
	echo "IPKG pool directory ($POOL) does not exist, creating"
	mkdir -p $POOL
	[ "$?" = "0" ] || bailout "couldn't create pool directory $POOL" 
fi

if [ -n "$DIST" ]; then

	if [ -d "$REPODIR/$PROJECT/dists/$DIST" ]; then
		echo "${PREFIX} error: $REPODIR/$PROJECT/dists/$DIST already exists!"
		echo "${PREFIX} error: please remove this directory first if this is intended"
		exit 1
	fi

	echo "checking dist dir..: $REPODIR/$PROJECT/dists/$DIST"
	mkdir -p $REPODIR/$PROJECT/dists/$DIST
fi
	
echo "dist directory.....: $DIST"

#
# For all ipkg packages we have built: check if already in pool
#

for package in $IPKG_PACKAGES; do

	echo "checking pool for..: $package"

	package_split=`ptxd_ipkg_split $package`
	IPKG_NAME=`ptxd_ipkg_name $package_split`
	IPKG_REV_UPSTREAM=`ptxd_ipkg_rev_upstream $package_split`
	IPKG_REV_PACKAGE=`ptxd_ipkg_rev_package $package_split`
	IPKG_REV="${IPKG_REV_UPSTREAM}${IPKG_REV_PACKAGE}"
	IPKG_ARCH=`ptxd_ipkg_arch $package_split`
	PACKAGES_IN_POOL=`find $POOL -name ${IPKG_NAME}_${IPKG_REV}-*_${IPKG_ARCH}.ipk -exec basename \{} \;`

	cp -f $IPKGDIR/$package $POOL/$package

	if [ "$PACKAGES_IN_POOL" = "" ]; then 

		# this package wasn't there before, re-revision to -1
		newpackage=`$SCRIPTDIR/ipkg-revision $POOL/$package - 1`
		if [ -n "$DIST" ]; then 
			cp -f "$IPKGDIR/../state/${IPKG_NAME}.perms" "$POOL/${newpackage%.ipk}.perms"

			echo "  linking.source...: ../../pool/$newpackage"
			echo "  linking.to.......: $REPODIR/$PROJECT/dists/$DIST/$newpackage"
			ln -sf ../../pool/${newpackage} $REPODIR/$PROJECT/dists/$DIST/$newpackage

			echo "  perms linking.source...: ../../pool/${newpackage%.ipk}.perms"
			echo "  perms linking.to.......: $REPODIR/$PROJECT/dists/$DIST/${newpackage%.ipk}.perms"
			ln -sf ../../pool/${newpackage%.ipk}.perms $REPODIR/$PROJECT/dists/$DIST/${newpackage%.ipk}.perms
		fi

	else

		# find out latest revision
		latest_pkg=""
		for pkg in $PACKAGES_IN_POOL; do 
			echo "  candidate........: $pkg"
			if [ "$latest_pkg" = "" ]; then
				latest_pkg=$pkg
				continue
			fi
			ptxd_ipkg_rev_smaller $pkg $latest_pkg && continue
			latest_pkg=$pkg
		done

		echo "  latest version...: $latest_pkg"

		echo "  comparing........: $package with $latest_pkg"

		$SCRIPTDIR/ipkg-check-equal $POOL/$package $POOL/$latest_pkg
		if [ "$?" = "0" ]; then 
			echo "                     equal, new package droped"
			rm -f $POOL/$package
			if [ -n "$DIST" ]; then 
				echo "  linking.source...: ../../pool/$latest_pkg"
				echo "  linking.to.......: $REPODIR/$PROJECT/dists/$DIST/$latest_pkg"
				ln -sf ../../pool/${latest_pkg} $REPODIR/$PROJECT/dists/$DIST/$latest_pkg

				echo "  perms linking.source...: ../../pool/${latest_pkg%.ipk}.perms"
				echo "  perms linking.to.......: $REPODIR/$PROJECT/dists/$DIST/${latest_pkg%.ipk}.perms"
				ln -sf ../../pool/${latest_pkg%.ipk}.perms $REPODIR/$PROJECT/dists/$DIST/${latest_pkg%.ipk}.perms
			fi
			continue
		fi

		package_split=`ptxd_ipkg_split $latest_pkg`
		IPKG_REV_PACKAGE=`ptxd_ipkg_rev_package $package_split`

		newpackage=`$SCRIPTDIR/ipkg-revision $POOL/$package - $(($IPKG_REV_PACKAGE+1))`
		echo "RSC2: newpackage=$newpackage"
		if [ -n "$DIST" ]; then
			cp -f "$IPKGDIR/../state/${IPKG_NAME}.perms" "$POOL/${newpackage%.ipk}.perms"

			echo "  linking.source...: ../../pool/$newpackage"
			echo "  linking.to.......: $REPODIR/$PROJECT/dists/$DIST/$newpackage"
			ln -sf ../../pool/${newpackage} $REPODIR/$PROJECT/dists/$DIST/$newpackage
	
			echo "  perms linking.source...: ../../pool/${newpackage%.ipk}.perms"
			echo "  perms linking.to.......: $REPODIR/$PROJECT/dists/$DIST/${newpackage%.ipk}.perms"
			ln -sf ../../pool/${newpackage%.ipk}.perms $REPODIR/$PROJECT/dists/$DIST/${newpackage%.ipk}.perms
		fi

	fi

	rm -f $POOL/$package
done

# Everything finished, create the package index

echo "creating index.....: "

(cd $REPODIR/$PROJECT/dists/$DIST && ${TYPE}-make-index . > Packages && gzip -c Packages > Packages.gz)

exit