From 81f44fcdf5da2fc1f25abd2ba4222cb21ee9f3f6 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 18 Mar 2012 11:15:28 +0000
Subject: [PATCH] .git-revid from my trains.git

---
 .git-revid | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100755 .git-revid

diff --git a/.git-revid b/.git-revid
new file mode 100755
index 0000000..74037ae
--- /dev/null
+++ b/.git-revid
@@ -0,0 +1,39 @@
+#!/bin/bash
+set -e
+set -o pipefail
+
+kind="$1"
+
+desc=`git-describe --always HEAD`
+log=`git-log -1 --pretty='format:%h %ci %s' HEAD`
+set +e
+git-diff --quiet HEAD
+diffrc=$?
+set -e
+case $diffrc in
+0)	;;
+1)	diffplus=+ ;;
+*)	exit $diffrc ;;
+esac
+
+case "$1" in
+'')	maxlen=.71
+	;;
+C)	echo '#include "../.git-revid-autoversion.h"'
+	printf 'const char autoversion[]= \"'
+	log="${log//\\/\\\\}"
+	log="${log//\"/\\\"}"
+	maxlen=''
+	;;
+*)	echo >&2 'bad usage for .git-revid'
+	exit 1
+	;;
+esac
+
+printf "%${maxlen}s" "$desc$diffplus $log"
+
+case "$kind" in
+'')	printf '\n' ;;
+C)	echo '";' ;;
+*)	;;
+esac
-- 
2.30.2