pacman/scripts/libmakepkg/util/util.sh.in
Alad Wenter aca153bfa6 libmakepkg: generate all scripts
In order for the scripts to be used in testsuites, it is easiest to generate
all of them so they are found in the build directory (which may be different
to the source directory).

Signed-off-by: Alad Wenter <alad@archlinux.info>
Signed-off-by: Allan McRae <allan@archlinux.org>
2016-10-22 20:50:28 +10:00

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#!/bin/bash
#
# util.sh - general utility functions
#
# Copyright (c) 2006-2016 Pacman Development Team <pacman-dev@archlinux.org>
# Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.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, see <http://www.gnu.org/licenses/>.
#
[[ -n "$LIBMAKEPKG_UTIL_UTIL_SH" ]] && return
LIBMAKEPKG_UTIL_UTIL_SH=1
##
# usage : in_array( $needle, $haystack )
# return : 0 - found
# 1 - not found
##
in_array() {
local needle=$1; shift
local item
for item in "$@"; do
[[ $item = "$needle" ]] && return 0 # Found
done
return 1 # Not Found
}
# tests if a variable is an array
is_array() {
local v=$1
local ret=1
# this function requires extglob - save current options to restore later
local shellopts=$(shopt -p)
shopt -s extglob
if [[ $(declare -p "$v") == declare\ -*([[:alnum:]])a*([[:alnum:]])\ * ]]; then
ret=0
fi
eval "$shellopts"
return $ret
}
# Canonicalize a directory path if it exists
canonicalize_path() {
local path="$1";
if [[ -d $path ]]; then
(
cd_safe "$path"
pwd -P
)
else
printf "%s\n" "$path"
fi
}
dir_is_empty() {
(
shopt -s dotglob nullglob
files=("$1"/*)
(( ${#files} == 0 ))
)
}
cd_safe() {
if ! cd "$1"; then
error "$(gettext "Failed to change to directory %s")" "$1"
plain "$(gettext "Aborting...")"
exit 1
fi
}