Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/scripts/libmakepkg/util/pkgbuild.sh
blob: 17e4cc56117a65c89771b41313146e5ff3e75aa8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
#!/bin/bash
#
#   pkgbuild.sh - functions to extract information from PKGBUILD files
#
#   Copyright (c) 2014-2015 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
}