| #!/bin/bash |
| # Copyright 2019 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| set -o pipefail |
| |
| usage() { |
| echo "usage: ${0} {file} {reference} {output}" |
| echo "Compares two files and writes any differences to an output file." |
| echo "Exits with success if the files match, and failure if they do not." |
| } |
| |
| diff ${1} ${2} > ${3} |
| if [ "$?" -eq "1" ]; then |
| file_path=`realpath ${2}` |
| reference_path=`realpath ${1}` |
| 1>&2 echo "Error: file \"${1}\" does not match reference \"${2}\"." |
| 1>&2 echo "\"${2}\" may need to be regenerated, perhaps by running" |
| 1>&2 echo " cp ${reference_path} ${file_path}" |
| exit -1 |
| fi |
