xref: /freebsd/contrib/bc/gen/strgen.sh (revision 1d386b48a555f61cb7325543adbbb5c3f3407a66)
1#! /bin/sh
2#
3# SPDX-License-Identifier: BSD-2-Clause
4#
5# Copyright (c) 2018-2023 Gavin D. Howard and contributors.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions are met:
9#
10# * Redistributions of source code must retain the above copyright notice, this
11#   list of conditions and the following disclaimer.
12#
13# * Redistributions in binary form must reproduce the above copyright notice,
14#   this list of conditions and the following disclaimer in the documentation
15#   and/or other materials provided with the distribution.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
21# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27# POSSIBILITY OF SUCH DAMAGE.
28#
29
30export LANG=C
31export LC_CTYPE=C
32
33progname=${0##*/}
34
35script="$0"
36scriptdir=$(dirname "$script")
37. "$scriptdir/../scripts/functions.sh"
38
39# Just print the usage and exit with an error. This can receive a message to
40# print.
41# @param 1  A message to print.
42usage() {
43	if [ $# -eq 1 ]; then
44		printf '%s\n\n' "$1"
45	fi
46	printf 'usage: %s input output exclude name [label [define [remove_tabs]]]\n' "$progname"
47	exit 1
48}
49
50# See strgen.c comment on main() for what these mean. Note, however, that this
51# script generates a string literal, not a char array. To understand the
52# consequences of that, see manuals/development.md#strgenc.
53if [ $# -lt 3 ]; then
54	usage "Not enough arguments"
55fi
56
57input="$1"
58check_file_arg "$input"
59output="$2"
60exclude="$3"
61name="$4"
62label="$5"
63define="$6"
64remove_tabs="$7"
65if [ "$remove_tabs" != "" ]; then
66	check_bool_arg "$remove_tabs"
67fi
68
69tmpinput=$(mktemp -t "${input##*/}_XXXXXX")
70
71if [ "$exclude" -ne 0 ]; then
72	filter_text "$input" "$tmpinput" "E"
73else
74	filter_text "$input" "$tmpinput" "A"
75fi
76
77exec < "$tmpinput"
78exec > "$output"
79
80rm -f "$tmpinput"
81
82if [ -n "$label" ]; then
83	nameline="const char *${label} = \"${input}\";"
84	labelexternline="extern const char *${label};"
85fi
86
87if [ -n "$define" ]; then
88	condstart="#if ${define}"
89	condend="#endif"
90fi
91
92if [ -n "$remove_tabs" ]; then
93	if [ "$remove_tabs" -ne 0 ]; then
94		remtabsexpr='s:	::g;'
95	fi
96fi
97
98cat<<EOF
99// Copyright (c) 2018-2023 Gavin D. Howard and contributors.
100// Licensed under the 2-clause BSD license.
101// *** AUTOMATICALLY GENERATED FROM ${input}. DO NOT MODIFY. ***
102
103${condstart}
104$labelexternline
105
106extern const char $name[];
107
108$nameline
109
110const char ${name}[] =
111$(sed -e "$remtabsexpr " -e '1,/^$/d; s:\\n:\\\\n:g; s:":\\":g; s:^:":; s:$:\\n":')
112;
113${condend}
114EOF
115
116#if [ "$exclude" -ne 0 ]; then
117	#rm -rf "$input"
118#fi
119