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ba4d97a4 MW |
1 | #! /bin/sh |
2 | ### -*-sh-*- | |
3 | ### | |
4 | ### Make autoconf-like substitutions in files | |
5 | ### | |
6 | ### (c) 2008 Mark Wooding | |
7 | ### | |
8 | ||
9 | ###----- Licensing notice --------------------------------------------------- | |
10 | ### | |
11 | ### This file is part of the Common Files Distribution (`common'). | |
12 | ### | |
13 | ### `Common' is free software; you can redistribute it and/or modify | |
14 | ### it under the terms of the GNU General Public License as published by | |
15 | ### the Free Software Foundation; either version 2 of the License, or | |
16 | ### (at your option) any later version. | |
17 | ### | |
18 | ### `Common' is distributed in the hope that it will be useful, | |
19 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ### GNU General Public License for more details. | |
22 | ### | |
23 | ### You should have received a copy of the GNU General Public License | |
24 | ### along with `common'; if not, write to the Free Software Foundation, | |
25 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
26 | ||
27 | set -e | |
ba4d97a4 MW |
28 | |
29 | ###-------------------------------------------------------------------------- | |
30 | ### Parse command line arguments. | |
31 | ||
32 | while [ $# -gt 0 ]; do | |
33 | case $1 in | |
34 | -h | --h | --he | --hel | --help) | |
35 | cat <<EOF | |
36 | Usage: confsubst FILE TAG=VALUE... | |
37 | ||
38 | Replaces occurrences of @TAG@ in FILE with VALUE, and writes the result to | |
39 | standard output. | |
40 | EOF | |
41 | exit 0 | |
42 | ;; | |
ba4d97a4 MW |
43 | --) |
44 | shift | |
45 | break | |
46 | ;; | |
47 | -) | |
48 | break | |
49 | ;; | |
50 | -*) | |
51 | echo "confsubst: unknown option \`$1'" >&2 | |
52 | exit 1 | |
53 | ;; | |
54 | *) | |
55 | break | |
56 | ;; | |
57 | esac | |
58 | shift | |
59 | done | |
60 | ||
61 | if [ $# -lt 1 ]; then | |
62 | echo >&2 "Usage: confsubst FILE TAG=VALUE..." | |
63 | exit 1 | |
64 | fi | |
65 | file=$1; shift | |
66 | ||
67 | ###-------------------------------------------------------------------------- | |
68 | ### Main code. | |
69 | ||
70 | subst="" | |
71 | for fixup; do | |
72 | case "$fixup" in | |
87eaf275 | 73 | *?=*) ;; |
ba4d97a4 MW |
74 | *) echo >&2 "$0: bad substitution: $fixup"; exit 1 ;; |
75 | esac | |
de8440ce | 76 | tag=${fixup%%=*} value=${fixup#*=} |
ba4d97a4 MW |
77 | subst="$subst s\a@$tag@\a$value\ag;" |
78 | done | |
79 | ||
80 | sed "$subst" $file || exit $? | |
81 | ||
82 | ###----- That's all, folks -------------------------------------------------- |