#!/bin/bash

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

# Useful functions

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

restore_umask () {
	umask $UMASK
}

repo_lock () { #repo_lock <repo-name> <arch> [timeout]
	LOCKDIR="$TMPDIR/.repolock.$1.$2"
	local _count
	local _trial
	local _timeout
	local _lockblock
	local _owner

	if [ $# -eq 2 ]; then
	    _lockblock=true
	    _trial=0
	elif [ $# -eq 3 ]; then
	    _lockblock=false
	    _timeout=$3
	    let _trial=$_timeout/$LOCK_DELAY
	fi

	_count=0
	while [ $_count -le $_trial ] || $_lockblock ; do
	    if ! mkdir "$LOCKDIR" >/dev/null 2>&1 ; then
		_owner="$(/usr/bin/stat -c %U $LOCKDIR)"
		echo "error: Repo $1-$2 is already locked by $_owner. Retrying in $LOCK_DELAY seconds..." >&2
	    else
		set_umask
		break
	    fi
	    sleep $LOCK_DELAY
	    let _count=$_count+1
	done
}

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

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

	_ret="$(/usr/bin/bsdtar -xOqf "$1" .PKGINFO | /bin/grep -m 1 -E "$2" | /bin/sed 's|\w*\s*=\s*\(.*\)|\1|')"
	echo "$_ret"
}


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

	_base="$(_grep_pkginfo "$1" "^pkgbase")"
	if [ -z "$_base" ]; then
		getpkgname "$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!" >&2
		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!" >&2
		exit 1
	fi

	echo "$_ver"
}

getpkgfile() {
	if [[ ${#} -ne 1 ]]; then
		echo 'ERROR: No canonical package found!' >&2
		exit 1
	elif [ ! -f "${1}" ]; then
		echo "ERROR: Package ${1} not found!" >&2
		exit 1
	fi

	echo ${1}
}

getpkgfiles() {
	if [ ! -z "$(echo ${@%\.*} | sed "s/ /\n/g" | sort | uniq -D)" ]; then
		echo 'ERROR: Duplicate packages found!'>&2
		exit 1
	fi

	for f in ${@}; do
		if  [ ! -f "${f}" ]; then
			echo "ERROR: Package ${f} not found!" >&2
			exit 1
		fi
	done

	echo ${@}
}

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

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

get_repos_for_host() {
	if [ "$(hostname)" = "sigurd" ]; then
		echo "community community-testing"
	else
		echo "core extra testing"
	fi
}

#usage: chk_license ${license[@]}"
chk_license() {
    local l
    for l in "$@"; do
        l="$(echo $l | tr '[:upper:]' '[:lower:]')"
        for allowed in ${ALLOWED_LICENSES[@]}; do
            allowed="$(echo $allowed | tr '[:upper:]' '[:lower:]')"
            if [ "$l" = "$allowed" ]; then
                return 0
            fi
        done
    done

    return 1
}

pkgname_from_src() {
    local tmp
    tmp=${1##*/}
    tmp=${tmp%$SRCEXT}
    for a in ${ARCHES[@]}; do
        tmp=${tmp%-$a}
    done
    tmp=${tmp%-any}
    echo ${tmp%-*-*}
}

pkgver_from_src() {
    tmp=${1##*/}
    tmp=${tmp%$SRCEXT}
    for a in ${ARCHES[@]}; do
        tmp=${tmp%-$a}
    done
    tmp=${tmp%-any}
    echo $tmp | sed 's|.*-\(.*-.*\)$|\1|g'
}

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