From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 18 Mar 2012 11:15:28 +0000 (+0000)
Subject: .git-revid from my trains.git
X-Git-Tag: f0.3~42
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=81f44fcdf5da2fc1f25abd2ba4222cb21ee9f3f6;p=topbloke-formulae.git

.git-revid from my trains.git
---

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