| # Copyright 2019 The Go Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style |
| # license that can be found in the LICENSE file. |
| |
| # Library of useful bash functions and variables. |
| |
| if [ -t 1 ] && which tput >/dev/null 2>&1; then |
| RED="$(tput setaf 1)" |
| GREEN="$(tput setaf 2)" |
| YELLOW="$(tput setaf 3)" |
| NORMAL="$(tput sgr0)" |
| else |
| RED="" |
| GREEN="" |
| YELLOW="" |
| NORMAL="" |
| fi |
| |
| EXIT_CODE=0 |
| |
| info() { echo -e "${GREEN}$@${NORMAL}" 1>&2; } |
| warn() { echo -e "${YELLOW}$@${NORMAL}" 1>&2; } |
| err() { echo -e "${RED}$@${NORMAL}" 1>&2; EXIT_CODE=1; } |
| |
| die() { |
| err $@ |
| exit 1 |
| } |
| |
| # runcmd prints an info log describing the command that is about to be run, and |
| # then runs it. It sets EXIT_CODE to non-zero if the command fails, but does not exit |
| # the script. |
| runcmd() { |
| msg="$@" |
| # Truncate command logging for narrow terminals. |
| # Account for the 2 characters of '$ '. |
| maxwidth=$(( $(tput cols) - 2 )) |
| if [[ ${#msg} -gt $maxwidth ]]; then |
| msg="${msg::$(( maxwidth - 3 ))}..." |
| fi |
| info "\$ $msg" |
| $@ || err "command failed" |
| } |
