pacman/scripts/repo-add

#!/bin/bash
#   repo-add : add a package to a given repo database file
#  
#   Copyright (c) 2006 Aaron Griffin <aaron@archlinux.org>
#  
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
# 
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#  
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
#   USA.

FORCE=0
REPO_DB_FILE=""

DB_COMPRESSION="gz" #TODO this is gross
DB_CHECKSUMS=(md5)
TMP_DIR=""

if [ $# -lt 2 ]; then
	echo "repo-add /path/to/repo.db.tar.gz [--force] [packages-to-add]"
	exit 1
fi


get_checksum () {
	case "$(echo "$1" | tr A-Z a-z)" in
		md5) sum=$(md5sum $2); echo ${sum% *} ;;
		sha1) sum=$(sha1sum $2); echo ${sum% *} ;;
		sha256) sum=$(sha256sum $2); echo ${sum% *} ;;
		sha384) sum=$(sha256sum $2); echo ${sum% *} ;;
		sha512) sum=$(sha256sum $2); echo ${sum% *} ;;
	esac
}

checksum_name () {
	case "$(echo "$1" | tr A-Z a-z)" in
		md5) echo "MD5SUM" ;;
		sha1) echo "SHA1SUM" ;;
		sha256) echo "SHA256SUM" ;;
		sha384) echo "SHA384SUM" ;;
		sha512) echo "SHA512SUM" ;;
	esac
}

test_repo_db_file () {
	if [ -f "$REPO_DB_FILE" ]; then
		[ "$(tar tf "$REPO_DB_FILE" | grep -c "/desc")" -gt 0 ] || return 1
	else
		true
	fi
}

db_write_entry()
{
	pkgfile=$(readlink -f $1)
	export pkgname=""
	pkgver=""
	pkgdesc=""
	url=""
	builddate=""
	packager=""
	csize=""
	size="" 
	groups=""
	depends=""
	backups=""
	licenses=""
	_replaces=""
	_provides=""
	_conflicts=""

	OLDIFS="$IFS"
	#gross... IFS == new line
	IFS='
	'
	for i in $(tar xOf "$pkgfile" .PKGINFO | grep -v "^#" |sed 's|\(\w*\)\s*=\s*\(.*\)|\1="\2"|'); do
		eval "${i}"
		case "$i" in
			group=*) groups="$groups $group" ;;
			depend=*) depends="$depends $depend" ;;
			backup=*) backups="$backups $backup" ;;
			license=*) licenses="$licenses $license" ;;
			replaces=*) _replaces="$_replaces $replaces" ;;
			provides=*) _provides="$_provides $provides" ;;
			conflicts=*) _conflicts="$_conflicts $conflicts" ;;
		esac
	done
	IFS=$OLDIFS

	csize="$(du -b $pkgfile | cut -f1)"

	cd $gstmpdir

	if [ -z "$pkgname" -o -z "$pkgver" ]; then
		echo "   error: invalid package file"
		return 1
	fi 

	if [ ! -d "$pkgname-$pkgver" ]; then
		[ -e "$pkgname-$pkgver" ] && rm -rf "$pkgname-$pkgver"
		mkdir "$pkgname-$pkgver"
		cd "$pkgname-$pkgver"
	else
		cd "$pkgname-$pkgver"
		[ -e desc ] && rm desc
		[ -e depends ] && rm depends
	fi

	# desc
	echo ":: creating 'desc' db entry"
	echo -e "%FILENAME%\n$1\n" >> desc
	echo -e "%NAME%\n$pkgname\n" >>desc
	echo -e "%VERSION%\n$pkgver\n" >>desc
	if [ -n "$pkgdesc" ]; then
		echo -e "%DESC%\n$pkgdesc\n" >>desc
	fi
	if [ -n "$groups" ]; then
		echo "%GROUPS%" >>desc
		echo $groups | tr -s ' ' '\n' >>desc
		echo "" >desc
	fi
	[ -n $csize ] && echo -e "%CSIZE%\n$csize\n" >>desc
	[ -n $size ] && echo -e "%ISIZE%\n$size\n" >>desc

	for chk in ${DB_CHECKSUMS[@]}; do
		name="$(checksum_name $chk)"
		echo ":: computing $name checksums"
		if [ -n "$name" ]; then
			echo -e "%$name%\n$(get_checksum $chk $pkgfile)\n" >>desc
		fi
	done

	[ -n "$url" ] && echo -e "%URL%\n$url\n" >>desc
	if [ -n "$licenses" ]; then
		echo "%LICENSE%" >>desc
		echo $licenses | tr -s ' ' '\n' >>desc
		echo "" >>desc
	fi
	[ -n "$arch" ] && echo -e "%ARCH%\n$arch\n" >>desc
	[ -n "$builddate" ] && echo -e "%BUILDDATE%\n$builddate\n" >>desc
	[ -n "$packager" ] && echo -e "%PACKAGER%\n$packager\n" >>desc

	if [ -n "$_replaces" ]; then
		echo "%REPLACES%" >>desc
		echo $_replaces | tr -s ' ' '\n' >>desc
		echo "" >>desc
	fi
	[ "$FORCE" = "1" ] && echo -e "%FORCE%\n" >>desc

	# depends
	echo ":: creating 'depends' db entry"
	if [ -n "$depends" ]; then
		echo "%DEPENDS%" >>depends
		echo $depends | tr -s ' ' '\n' >>depends
		echo "" >>depends
	fi
	if [ -n "$_conflicts" ]; then
		echo "%CONFLICTS%" >>depends
		echo $_conflicts | tr -s ' ' '\n' >>depends
		echo "" >>depends
	fi
	if [ -n "$_provides" ]; then
		echo "%PROVIDES%" >>depends
		echo $_provides | tr -s ' ' '\n' >>depends
		echo "" >>depends
	fi

	# preserve the modification time
	touch -r "$pkgfile" desc depends
}

if [ $# -gt 1 ]; then
	gstmpdir=$(mktemp -d /tmp/gensync.XXXXXXXXXX) || (\
	echo "cannot create temp directory for database building"; \
	exit 1)

	success=0
	for arg in $@; do
		if [ "$arg" == "--force" -o "$arg" == "-f" ]; then
			FORCE=1
		elif [ "x$REPO_DB_FILE" == "x" ]; then
			REPO_DB_FILE="$(readlink -f $arg)"
			if ! test_repo_db_file; then
				echo "   repository db file '$REPO_DB_FILE' is not a proper pacman db"
				exit 1
			elif [ -f "$REPO_DB_FILE" ]; then
				echo ":: extracting database to a temporary location"
				tar xf "$REPO_DB_FILE" -C "$gstmpdir"
			fi
		else
			if [ -f "$arg" ]; then
				if ! tar xf "$arg" .PKGINFO 2>&1 >/dev/null; then
					echo "error: '$arg' is not a package file, skipping"
				else
					echo ":: adding package '$arg'"

					this_dir="$(pwd)"
					if db_write_entry "$arg"; then
						success=1
					fi
					cd $this_dir
				fi
			else
				echo "error: package '$arg' not found"
			fi
		fi
	done

	if [ "$success" = "1" ]; then
		echo ":: creating updated database file ${REPO_DB_FILE}"
		cd $gstmpdir
		if [ -n "$(ls)" ]; then
			[ -f "${REPO_DB_FILE}.old" ] && rm "${REPO_DB_FILE}.old"
			[ -f "$REPO_DB_FILE" ] && mv "$REPO_DB_FILE" "${REPO_DB_FILE}.old"
			case "$DB_COMPRESSION" in
				gz) tar c * | gzip -9 >$REPO_DB_FILE ;;
				bz2) tar c * | bzip2 -9 >$REPO_DB_FILE ;;
				*) echo "warning: no compression set"
				tar c * >$REPO_DB_FILE;;
			esac
		fi
	else
		echo ":: no packages modified, nothing to do"
	fi
fi

[ -d "$gstmpdir" ] && rm -rf $gstmpdir

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