a00615bfda
When scripting/automating around makepkg, it is sometimes desirable to
know how makepkg will be configured to operate. One example is the
archlinux devtools, which must forward select makepkg.conf variables
into a build chroot (for example PACKAGER) or use those variables itself
(for example {SRC,PKG,LOG}DEST).
The configuration file can be in up to 3 places, and should be capable
of being overridden via environment variables. It is sufficiently
complex to represent distinct functionality, and sufficiently useful to
merit easy accessibility in other scripts, therefore, let us move it
into a publicly exposed utility library.
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>
114 lines
2.5 KiB
Bash
114 lines
2.5 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) 2006-2018 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 "$LIBMAKEPKG_UTIL_UTIL_SH" ]] && return
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LIBMAKEPKG_UTIL_UTIL_SH=1
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LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
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source "$LIBRARY/util/error.sh"
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source "$LIBRARY/util/message.sh"
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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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if [[ ${!v@a} = *a* ]]; then
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ret=0
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fi
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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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# Try to create directory if one does not yet exist. Fails if the directory
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# exists but has no write permissions, or if there is an existing file with
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# the same name.
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ensure_writable_dir() {
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local dirtype="$1" dirpath="$2"
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if ! mkdir -p "$dirpath" 2>/dev/null; then
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error "$(gettext "Failed to create the directory \$%s (%s).")" "$dirtype" "$dirpath"
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return 1
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elif [[ ! -w $dirpath ]]; then
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error "$(gettext "You do not have write permission for the directory \$%s (%s).")" "$dirtype" "$dirpath"
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return 1
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fi
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return 0
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}
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# source a file and fail if it does not succeed
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source_safe() {
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local shellopts=$(shopt -p extglob)
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shopt -u extglob
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if ! source "$@"; then
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error "$(gettext "Failed to source %s")" "$1"
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exit $E_MISSING_FILE
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fi
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eval "$shellopts"
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}
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