1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# Usage: $ ./rustc-version.sh rustc
5#
6# Print the Rust compiler version in a 6 or 7-digit form.
7
8# Convert the version string x.y.z to a canonical up-to-7-digits form.
9#
10# Note that this function uses one more digit (compared to other
11# instances in other version scripts) to give a bit more space to
12# `rustc` since it will reach 1.100.0 in late 2026.
13get_canonical_version()
14{
15	IFS=.
16	set -- $1
17	echo $((100000 * $1 + 100 * $2 + $3))
18}
19
20if output=$("$@" --version 2>/dev/null); then
21	set -- $output
22	get_canonical_version $2
23else
24	echo 0
25	exit 1
26fi
27