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#!/bin/bash
#
# pkgbuild.sh - functions to extract information from PKGBUILD files
#
# Copyright (c) 2014-2016 Pacman Development Team <pacman-dev@archlinux.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_PKGBUILD_SH" ]] && return
LIBMAKEPKG_UTIL_PKGBUILD_SH=1
have_function() {
declare -f "$1" >/dev/null
}
grep_function() {
{ declare -f "$1" || declare -f package; } 2>/dev/null | grep -E "$2"
}
array_build() {
local dest=$1 src=$2 i keys values
# it's an error to try to copy a value which doesn't exist.
declare -p "$2" &>/dev/null || return 1
# Build an array of the indicies of the source array.
eval "keys=(\"\${!$2[@]}\")"
# Clear the destination array
eval "$dest=()"
# Read values indirectly via their index. This approach gives us support
# for associative arrays, sparse arrays, and empty strings as elements.
for i in "${keys[@]}"; do
values+=("printf -v '$dest[$i]' %s \"\${$src[$i]}\";")
done
eval "${values[*]}"
}
extract_global_variable() {
# $1: variable name
# $2: multivalued
# $3: name of output var
local attr=$1 isarray=$2 outputvar=$3 ref
if (( isarray )); then
array_build ref "$attr"
[[ ${ref[@]} ]] && array_build "$outputvar" "$attr"
else
[[ ${!attr} ]] && printf -v "$outputvar" %s "${!attr}"
fi
}
extract_function_variable() {
# $1: function name
# $2: variable name
# $3: multivalued
# $4: name of output var
local funcname=$1 attr=$2 isarray=$3 outputvar=$4 attr_regex= decl= r=1
if (( isarray )); then
printf -v attr_regex '^[[:space:]]* %s\+?=\(' "$2"
else
printf -v attr_regex '^[[:space:]]* %s\+?=[^(]' "$2"
fi
while read -r; do
# strip leading whitespace and any usage of declare
decl=${REPLY##*([[:space:]])}
eval "${decl/#$attr/$outputvar}"
# entering this loop at all means we found a match, so notify the caller.
r=0
done < <(grep_function "$funcname" "$attr_regex")
return $r
}
get_pkgbuild_attribute() {
# $1: package name
# $2: attribute name
# $3: multivalued
# $4: name of output var
local pkgname=$1 attrname=$2 isarray=$3 outputvar=$4
printf -v "$outputvar" %s ''
if [[ $pkgname ]]; then
extract_global_variable "$attrname" "$isarray" "$outputvar"
extract_function_variable "package_$pkgname" "$attrname" "$isarray" "$outputvar"
else
extract_global_variable "$attrname" "$isarray" "$outputvar"
fi
}
##
# usage : get_full_version()
# return : full version spec, including epoch (if necessary), pkgver, pkgrel
##
get_full_version() {
if (( epoch > 0 )); then
printf "%s\n" "$epoch:$pkgver-$pkgrel"
else
printf "%s\n" "$pkgver-$pkgrel"
fi
}
##
# usage : get_pkg_arch( [$pkgname] )
# return : architecture of the package
##
get_pkg_arch() {
if [[ -z $1 ]]; then
if [[ $arch = "any" ]]; then
printf "%s\n" "any"
else
printf "%s\n" "$CARCH"
fi
else
local arch_override
get_pkgbuild_attribute "$1" arch 1 arch_override
(( ${#arch_override[@]} == 0 )) && arch_override=("${arch[@]}")
if [[ $arch_override = "any" ]]; then
printf "%s\n" "any"
else
printf "%s\n" "$CARCH"
fi
fi
}
print_all_package_names() {
local version=$(get_full_version)
local architecture pkg opts a
for pkg in ${pkgname[@]}; do
get_pkgbuild_attribute "$pkg" 'arch' 1 architecture
get_pkgbuild_attribute "$pkg" 'options' 1 opts
for a in ${architecture[@]}; do
printf "%s-%s-%s\n" "$pkg" "$version" "$a"
if in_opt_array "debug" ${opts[@]} && in_opt_array "strip" ${opts[@]}; then
printf "%s-%s-%s-%s\n" "$pkg" "@DEBUGSUFFIX@" "$version" "$a"
fi
done
done
}
get_all_sources() {
local aggregate l a
if array_build l 'source'; then
aggregate+=("${l[@]}")
fi
for a in "${arch[@]}"; do
if array_build l "source_$a"; then
aggregate+=("${l[@]}")
fi
done
array_build "$1" "aggregate"
}
get_all_sources_for_arch() {
local aggregate l
if array_build l 'source'; then
aggregate+=("${l[@]}")
fi
if array_build l "source_$CARCH"; then
aggregate+=("${l[@]}")
fi
array_build "$1" "aggregate"
}
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