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#!/bin/bash

# Random integrity things
[ "$UID" = "" ] && UID=$(uid)

if [ -z "$BASEDIR" ]; then
	BASEDIR="$(dirname $0)"
fi

if [ -f "$BASEDIR/config" ]; then
	. "$BASEDIR/config"
fi

# Useful functions
source_makepkg () {
	if [ -f "/etc/makepkg.conf" ]; then
		#Get some config info
		. /etc/makepkg.conf
	else
		echo "error: /etc/makepkg.conf does not exist!"
		exit 1
	fi
}

UMASK=""
set_umask () {
	[ "$UMASK" == "" ] && UMASK="$(umask)"
	umask 002
}

restore_umask () {
	umask $UMASK
}

repo_lock () { #repo_lock repo-name arch
	LOCKFILE="$TMPDIR/.repolock.$1.$2"
	if [ -f "$LOCKFILE" ]; then
		owner="$(/usr/bin/stat -c %U $LOCKFILE)"
		echo "error: db generation is already in progress (started by $owner)"
		exit 1
	else
		/bin/touch "$LOCKFILE"
		set_umask
	fi
}

repo_unlock () { #repo_unlock repo-name arch
	LOCKFILE="$TMPDIR/.repolock.$1.$2"
	if [ ! -f "$LOCKFILE" ]; then
		echo "error: repo lock doesn't exist... something went terribly wrong!"
	else
		rm -f "$LOCKFILE"
	fi
	restore_umask
}

# usage: _grep_pkginfo pkgfile pattern
_grep_pkginfo() {
	local _ret

	_ret="$(/usr/bin/bsdtar -xOqf "$1" .PKGINFO | /bin/grep -m 1 -E "$pattern" | /bin/sed 's|\w*\s*=\s*\(.*\)|\1|')"
	echo "$_ret"
}


# Get the package base or name
getpkgbase() {
	local _base

	_base="$(_grep_pkginfo "$1" "^pkg(base|name)")"
	if [ -z "$_base" ]; then
		echo "ERROR: Package '$1' has no pkgbase or pkgname in the PKGINFO. Fail!"
		exit 1
	fi

	echo "$_base"
}

# Get the package name
getpkgname() {
	local _name

	_name="$(_grep_pkginfo "$1" "^pkgname")"
	if [ -z "$_name" ]; then
		echo "ERROR: Package '$1' has no pkgname in the PKGINFO. Fail!"
		exit 1
	fi

	echo "$_name"
}

# Get the pkgver-pkgrel of this package
getpkgver() {
	local _ver

	_ver="$(_grep_pkginfo "$1" "^pkgver")"
	if [ -z "$_ver" ]; then
		echo "ERROR: Package '$1' has no pkgver in the PKGINFO. Fail!"
		exit 1
	fi

	echo "$_ver"
}

check_pkg_arch () { #check_pkg_arch pkgfile arch
	local _arch
	_arch="$(_grep_pkginfo "$1" "^arch")"

	if [ -z "$_arch" ]; then
		echo "ERROR: Package '$1' has no arch in the PKGINFO. Fail!"
		return 1
	fi
	if [ "$_arch" = "$2" ]; then
		return 0
	else
		return 1
	fi
}

get_svnpath () { #get_svnpath reponame
	local var
	local repopath
	var="\$SVNREPO_${1}"

	eval repopath=${var}
	if [ -z "$repopath" ]; then
		echo "ERROR: SVN path not defined for '${1}'" >&2
		echo "       Please check SVNREPO_${1} config setting" >&2
	fi
	
	echo "$repopath"
}


# vim: set ts=4 sw=4 noet ft=sh: