1 files changed, 275 insertions, 0 deletions
diff --git a/scripts/libutil.sh b/scripts/libutil.sh
new file mode 100755
index 0000000..229b275
--- /dev/null
+++ b/scripts/libutil.sh
@@ -0,0 +1,275 @@
+#!/bin/sh
+
+# libutil.sh - Utility functions
+#
+# Copyright(c) 2005 Natanael Copa
+#
+# Distributed under GPL-2
+#
+
+VERSION=0.13.1
+
+# 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][a-z0-9+]*:/" >/dev/null
+}
+
+# check if parameter is an apk package (contains a / or .apk at the end)
+is_apk() {
+	#echo "$1" | grep '/' >/dev/null && return 0
+	[ -z "${1%%*/*}" ] && return 0
+	
+	#echo "$1" | grep ".apk$" >/dev/null
+	[ -z "${1%%*.apk}" ]
+}
+
+# check if path start with a '/'
+is_absolute_path() {
+	test -z "${1##/*}"
+}
+
+# if path dont start with '/' then append $PWD
+get_absolute_path() {
+	if is_absolute_path "$1" ; then
+		echo "$1"
+	else
+		beautify_path "$PWD/$1"
+	fi
+}
+
+# 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
+}
+
+# remove version number from package name
+rm_ver() {
+	echo "$1" | sed 's/\(.*\)-[0-9].*/\1/'
+}
+
+# get version number from package name or file
+get_ver() {
+	basename "$1" .apk | sed 's/.*-\([0-9].*\)/\1/'
+}
+
+# initialize a temp directory
+# $1 contains the variable name for the directory
+# the directory will automatically be deleted upon exit
+init_tmpdir() {
+	local omask=`umask`
+	local __tmpd="$APK_TMPDIR/$PROGRAM-${$}-`date +%s`"
+	umask 077 || die "umask"
+	mkdir "$__tmpd" || exit 1
+	trap "rm -fr \"$__tmpd\"; exit" 0
+	umask $omask
+	eval "$1=\"$__tmpd\""
+}
+
+# remove files and empty dirs in specified list.
+# also remove APK_LBUFILES from default.tdb
+# environment:
+#  ROOT:	all files are relative this path
+#  VERBOSE: 	echo filenames to stdout
+#  DRYRUN:  	don't delete anything, just simulate
+my_rm() {
+	rm "$1" 2>/dev/null || busybox rm "$1"
+}
+
+list_uninstall() {
+	local f p 
+	local root=${ROOT:-"/"}
+	sort -r "$1" | while read f ; do
+		p="`beautify_path \"$root/$f\"`"
+		if [ "$DRYRUN" ] ; then
+			[ "$VERBOSE" ] && echo "$p"
+		else
+			if [ -d "$p" ] ; then
+				# try to remove dir, but ignore errors. It might
+				if rmdir "$p" 2>/dev/null ; then
+					[ "$VERBOSE" ] && echo "$p"
+					[ "$2" ] && echo "$f" >> "$2"
+				fi
+			else
+				my_rm "$p" && [ "$VERBOSE" ] && echo "$p"
+				[ "$2" ] && echo "$f" >> "$2"
+			fi
+		fi
+	done
+	return 0
+}
+
+# list all lines that occur in first list but not second
+# the files cannot contain duplicate lines.
+list_subtract() {
+	( 
+		# first we find all uniq lines
+		cat "$1" "$2" | sort | uniq -u 
+		
+		# then we combine uniq lines with first file ...
+		cat "$1"
+
+		# ...and find all duplicates. Those only exist in first file
+	) | sort | uniq -d
+}
+
+# insert an element first in APK_PATH if its not already there
+insert_apk_path() {
+	if [ "$1" != "`echo "$APK_PATH" | cut -d\; -f1`" ] ; then
+		[ "$APK_PATH" ] && APK_PATH=";$APK_PATH"
+		APK_PATH="$1$APK_PATH"
+	fi
+}
+
+lbu_filter() {
+	# Ok... I give up. shell is too slow. lets do it in awk.
+	awk 'BEGIN {
+		APK_LBUDIRS="'"$APK_LBUDIRS"'";
+		numdirs = split(APK_LBUDIRS, lbudir, ":");
+		#precalc lengths to save a few cpu cycles in loop
+		for (i = 1; i <= numdirs; i++)
+			len[i] = length(lbudir[i]);
+	}
+
+	# main loop
+	{
+		for (i = 1; i <= numdirs; i++) {
+			if (index($0, lbudir[i]) == 1 && (len[i] == length() || substr($0, len[i] + 1, 1) == "/")) {
+				print $0;
+			}
+		}	
+	}'
+}
+
+is_lbu_file() {
+	# just run test
+	[ "$(echo "$1" | lbu_filter)" ]
+}
+
+# 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 "$2"
+	fi
+}
+
+##########################################################
+# last_pkgf
+# find the latest package in a list, return 1 if not found
+last_pkgf() {
+	local pkgf last  status
+	while read pkgf ; do
+		apk_version -q -t "$pkgf" "$last"
+		[ $? -eq 2 ] && last="$pkgf"
+	done
+	[ -z "$last" ] && return 1
+	echo "$last"
+}
+
+###########################################################
+# 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_DATA=$APK_DATA"
+	echo "APK_DATALEVEL=$APK_DATALEVEL"
+	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 "CACHED_INDEX=$CACHED_INDEX"
+}
+
+#############################################################################
+# init_globals sets up the global variables
+
+APK_PREFIX_IN_PKG="`get_var APK_PREFIX_IN_PKG ''`"
+
+ROOT="`get_var ROOT /`"
+echo "$ROOT" | grep -v "^/" > /dev/null && ROOT="$PWD/$ROOT"
+
+APKTOOLS_CONF="`get_var APKTOOLS_CONF \"$(beautify_path /etc/apk/apk.conf)\"`"
+APK_PATH=`get_var APK_PATH ""`
+APK_DBDIR="`get_var APK_DBDIR \"$(beautify_path \"$ROOT/var/db/apk\")\"`"
+APK_DBDIR_IN_PKG="`get_var APK_DBDIR_IN_PKG ${APK_PREFIX_IN_PKG}var/db/apk`"
+APK_TMPDIR="`get_var \"APK_TMPDIR\" /tmp`"
+APK_ADD_TMP="`get_var \"APK_ADD_TMP\" \"$ROOT/usr/tmp\"`"
+APK_DATA="`get_var APK_DATA \"$(beautify_path \"$ROOT/var/lib/apk\")\"`"
+APK_KEEPCACHE="`get_var APK_KEEPCACHE no`"
+APK_LIBS="`get_var APK_LIBS /lib/apk`"
+PACKAGES="`get_var PACKAGES \"$(beautify_path \"$ROOT/var/cache/packages\")\"`"
+
+APKDB="`beautify_path \"$APK_DBDIR\"`"
+APK_NOCOMPRESS=`get_var APK_NOCOMPRESS ""`
+
+INDEX="INDEX.md5.gz"
+CACHED_INDEX="$APK_DATA/$INDEX"
+
+APK_SUM=`get_var APK_SUM md5`
+APK_MKSUM=`get_var APK_MKSUM "${APK_SUM}sum"`
+APK_CHKSUM=`get_var APK_CHKSUM "${APK_SUM}sum -c"`
+
+APK_DEFAULT_TDB=`get_var APK_DEFAULT_TDB "$APK_DATA/default.tdb"`
+SFIC=`which sfic 2>/dev/null`
+APK_GZSIGN_CERT=`get_var APK_GZSIGN_KEY /etc/apk/apk.crt`
+
+# confdirs are a : spearate list of dirs relative $ROOT that are to be
+# considered for local backups.
+# for example: APK_LBUDIRS="etc:usr/local/etc"
+APK_LBUDIRS=`get_var APK_LBUDIRS 'etc'`
+