| #!/usr/bin/env bash |
| |
| # Copyright 2016 The Fuchsia Authors |
| # Copyright (c) 2015 Travis Geiselbrecht |
| # |
| # Use of this source code is governed by a MIT-style |
| # license that can be found in the LICENSE file or at |
| # https://opensource.org/licenses/MIT |
| |
| GIT_REV="git-$(git rev-parse HEAD 2>/dev/null)" |
| # Is there a .git or revision? |
| if [ $? -eq 0 ]; then |
| if [ -n "$(git status --porcelain 2>/dev/null)" ]; then |
| GIT_REV+="-dirty" |
| fi |
| else |
| GIT_REV="unknown" |
| fi |
| |
| if [ $# -eq 1 ]; then |
| cat > "$1.new" <<END |
| #ifndef __BUILDID_H |
| #define __BUILDID_H |
| #define BUILDID "${GIT_REV}" |
| #endif |
| END |
| # Update the existing file only if it's changed. |
| if [ -r "$1" ] && cmp -s "$1.new" "$1"; then |
| rm -f "$1.new" |
| else |
| mv -f "$1.new" "$1" |
| fi |
| else |
| echo "${GIT_REV}" |
| fi |
