74 lines
1.9 KiB
Bash
74 lines
1.9 KiB
Bash
# Copyright 2021 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# Library of useful bash functions and variables for presubmit checks.
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RED=; GREEN=; YELLOW=; NORMAL=;
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MAXWIDTH=0
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if tput setaf 1 >& /dev/null; then
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RED=`tput setaf 1`
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GREEN=`tput setaf 2`
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YELLOW=`tput setaf 3`
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NORMAL=`tput sgr0`
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MAXWIDTH=$(( $(tput cols) - 2 ))
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fi
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EXIT_CODE=0
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info() { echo -e "${GREEN}$@${NORMAL}" 1>&2; }
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warn() { echo -e "${YELLOW}$@${NORMAL}" 1>&2; }
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err() { echo -e "${RED}$@${NORMAL}" 1>&2; EXIT_CODE=1; }
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die() {
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err $@
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exit 1
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}
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dryrun=false
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# runcmd prints an info log describing the command that is about to be run, and
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# then runs it. It sets EXIT_CODE to non-zero if the command fails, but does not exit
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# the script.
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runcmd() {
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msg="$@"
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if $dryrun; then
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echo -e "${YELLOW}dryrun${GREEN}\$ $msg${NORMAL}"
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return 0
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fi
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# Truncate command logging for narrow terminals.
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# Account for the 2 characters of '$ '.
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if [[ $MAXWIDTH -gt 0 && ${#msg} -gt $MAXWIDTH ]]; then
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msg="${msg::$(( MAXWIDTH - 3 ))}..."
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fi
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echo -e "$@\n" 1>&2;
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$@ || err "command failed"
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}
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# check_header checks that all given files contain the standard header for Go
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# projects.
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check_header() {
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if [[ "$@" != "" ]]; then
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for FILE in $@
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do
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line="$(head -4 $FILE)"
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if [[ ! $line == *"The Go Authors. All rights reserved."* ]] &&
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[[ ! $line == "// DO NOT EDIT. This file was copied from" ]]; then
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err "missing license header: $FILE"
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fi
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done
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fi
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}
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# ensure_go_binary verifies that a binary exists in $PATH corresponding to the
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# given go-gettable URI. If no such binary exists, it is fetched via `go install`.
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ensure_go_binary() {
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local binary=$(basename $1)
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if ! [ -x "$(command -v $binary)" ]; then
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info "Installing: $1"
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go install $1
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fi
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}
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