1#!/usr/bin/env bash
2
3# Copyright 2016 The Fuchsia Authors
4# Copyright (c) 2015 Travis Geiselbrecht
5#
6# Use of this source code is governed by a MIT-style
7# license that can be found in the LICENSE file or at
8# https://opensource.org/licenses/MIT
9
10GIT_REV="git-$(git rev-parse HEAD 2>/dev/null)"
11# Is there a .git or revision?
12if [ $? -eq 0 ]; then
13    if [ -n "$(git status --porcelain 2>/dev/null)" ]; then
14        GIT_REV+="-dirty"
15    fi
16else
17    GIT_REV="unknown"
18fi
19
20if [ $# -eq 1 ]; then
21  cat > "$1" <<END
22#ifndef __BUILDID_H
23#define __BUILDID_H
24#define ${GIT_REV}
25#endif
26END
27else
28    echo "${GIT_REV}"
29fi
30