apk-tools Code

#!/bin/sh

# libutil.sh - Utility functions
#
# Copyright(c) 2005 Natanael Copa
#
# Distributed under GPL-2
#

VERSION=0.6

# echo to stderr
eecho() {
	echo $* >&2
}

# echo to stderr and die
die() {
	echo -n "$PROGRAM: " >&2
	eecho $*
	exit 1
}

die_unless_force() {
	echo "$PROGRAM: $*" >&2
	[ -z "$FORCE" ] && exit 1
}

# remove double / and ./ in pathnames
beautify_path() {
	echo $1 | sed 's:/[^\.]\./::g; s:/\{2,\}:/:g; s:/./:/:g'
}

# check if parameter is an uri or not
is_uri() {
	echo "$1" | grep "^[a-z+]*:/" >/dev/null
}

# check if parameter is an apk package (contains a / or .apk at the end)
is_apk() {
	echo "$1" | grep '/' >/dev/null && return 0
	echo "$1" | grep ".apk$" >/dev/null
}

# check if parameter has version number (i.e. if it is an pkgv or pkg)
has_version() {
	echo "$1" | grep -- '-[0-9].*' >/dev/null
}

# check if parameter has some kind of wildcard
has_wildcard() {
	echo "$1" | grep "[\*\?\[]" >/dev/null
}

# get the scheme for an uri (echo everything before the first ':')
get_uri_scheme() {
	echo "$1" | cut -d : -f 1
}

# append APK_PATH if parameter is not an uri
mk_uri() {
	if is_uri $1 ; then
		echo $1
	else
		echo "$APK_PATH/$1"
	fi
}

# remove version number from package name
rm_ver() {
	echo $1 | sed 's/-[0-9].*//'	
}

# extract dependency from file without installing it
pkgf_get_deps() {
	local pkgv="`basename $1 .apk`"
	tar -O -zxf $1 $APK_DBDIR_IN_PKG/$pkgv/DEPEND
}
		

# assign a value to a global var, either from environment or
# from configuraion file
# usage: get_var VARIBALE_NAME DEFAULT_VALUE
get_var() {
	local var
	# first we check if the envvar is set
	eval "var=\$$1"
	if [ "$var" ] ; then
		echo "$var"
	elif [ -f ${APKTOOLS_CONF:="$ROOT/etc/apk.conf"} ] ; then
		# then we check the conf file
		var=`awk -F = '/^'$1'=/ { print $2 }' $APKTOOLS_CONF` 
		if [ "$var" ] ; then
			echo "$var"
		else
			# else we use the default
			echo "$2"
		fi
	else
		# no conf file found use default
		echo "$2"
	fi
}


###########################################################
# dump global variables
dump_env() {
	echo "ROOT=$ROOT"
	echo "APKTOOLS_CONF=$APKTOOLS_CONF"
	echo "APK_PATH=$APK_PATH"
	echo "APK_DBDIR=$APK_DBDIR"
	echo "APK_TMPDIR=$APK_TMPDIR"
	echo "APK_FETCH=$APK_FETCH"
	echo "APK_CACHE=$APK_CACHE"
	echo "APK_CACHELEVEL=$APK_CACHELEVEL"
	echo "APK_LIBS=$APK_LIBS"
	echo "PACKAGES=$PACKAGES"

	echo "APKDB=$APKDB"
	echo "APK_NOCOMPRESS=$APK_NOCOMPRESS"
	echo "REP_DIR=$REP_DIR"
	echo "REP_SCHEME=$REP_SCHEME"
	echo "INDEX_URI=$INDEX_URI"
	echo "CACHED_INDEX=$CACHED_INDEX"
}

#############################################################################
# init_globals sets up the global variables
ROOT=`get_var ROOT "/"`
echo $ROOT | grep -v "^/" > /dev/null && ROOT=`pwd`/$ROOT

APKTOOLS_CONF=`get_var APKTOOLS_CONF $(beautify_path /etc/apk.conf)`
APK_PATH=`get_var APK_PATH ""`
APK_DBDIR=`get_var APK_DBDIR $(beautify_path $ROOT/var/db/apk)`
APK_DBDIR_IN_PKG=`get_var APK_DBDIR_IN_PKG ./var/db/apk`
APK_TMPDIR=`get_var APK_TMPDIR /tmp`
APK_CACHE=`get_var APK_CACHE $(beautify_path $ROOT/var/lib/apk)`
APK_KEEPCACHE=`get_var APK_KEEPCACHE yes`
APK_LIBS=`get_var APK_LIBS /lib/apk`
PACKAGES=`get_var PACKAGES $(beautify_path $ROOT/var/cache/packages)`

APKDB=`beautify_path "$APK_DBDIR"`
APK_NOCOMPRESS=`get_var APK_NOCOMPRESS ""`

#INDEX="Packages.sha1.gz"
INDEX="INDEX.md5.gz"
CACHED_INDEX="$APK_CACHE/$INDEX"
INDEX_URI=`get_var INDEX_URI "$APK_PATH/$INDEX"`

APK_SUM=`get_var APK_SUM md5`
APK_MKSUM=`get_var APK_MKSUM "${APK_SUM}sum"`
APK_CHKSUM=`get_var APK_CHKSUM "${APK_SUM}sum -c"`