1#!/bin/sh
2# Copyright (c) 2021 Rodrigo Osorio
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26
27usage() {
28	echo "usage: update_crates <makefile>"
29	echo
30	exit 1
31}
32
33if [ "$#" -ne 1 ]; then
34	usage
35	exit 1
36fi
37
38newcrates() {
39    while IFS= read -r nline
40    do
41        echo "$nline"
42    done < "/dev/stdin"
43}
44
45infile=$1
46incrates=0
47while IFS= read -r line <&3
48do
49    match=$(echo "${line}" | grep "^CARGO_CRATES=")
50    [ -n "${match}" ] && incrates=1
51    if [ "${incrates}" -eq 1 ]; then
52        if [ -z "$line" ]; then
53            incrates=0
54            newcrates
55            echo "$line"
56        fi
57    else
58        echo "${line}"
59    fi
60done 3< "$infile"
61