86 lines
1.9 KiB
Bash
86 lines
1.9 KiB
Bash
#!/bin/bash
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#
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# util.sh - general utility functions
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#
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# Copyright (c) 2006-2016 Pacman Development Team <pacman-dev@archlinux.org>
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# Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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[[ -n "$LIBMAKEPKG_UTIL_UTIL_SH" ]] && return
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LIBMAKEPKG_UTIL_UTIL_SH=1
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##
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# usage : in_array( $needle, $haystack )
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# return : 0 - found
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# 1 - not found
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##
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in_array() {
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local needle=$1; shift
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local item
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for item in "$@"; do
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[[ $item = "$needle" ]] && return 0 # Found
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done
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return 1 # Not Found
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}
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# tests if a variable is an array
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is_array() {
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local v=$1
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local ret=1
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# this function requires extglob - save current options to restore later
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local shellopts=$(shopt -p)
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shopt -s extglob
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if [[ $(declare -p "$v") == declare\ -*([[:alnum:]])a*([[:alnum:]])\ * ]]; then
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ret=0
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fi
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eval "$shellopts"
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return $ret
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}
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# Canonicalize a directory path if it exists
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canonicalize_path() {
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local path="$1";
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if [[ -d $path ]]; then
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(
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cd_safe "$path"
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pwd -P
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)
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else
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printf "%s\n" "$path"
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fi
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}
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dir_is_empty() {
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(
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shopt -s dotglob nullglob
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files=("$1"/*)
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(( ${#files} == 0 ))
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)
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}
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cd_safe() {
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if ! cd "$1"; then
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error "$(gettext "Failed to change to directory %s")" "$1"
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plain "$(gettext "Aborting...")"
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exit 1
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fi
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}
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