From cae1c3528a5be9cd6548fa14db63c501edfaaf25 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ian@liberator.relativity.greenend.org.uk>
Date: Sun, 9 Jan 2011 14:01:47 +0000
Subject: [PATCH] git-revid: new C autoversion feature

---
 .git-revid               | 26 +++++++++++++++++++++++++-
 .git-revid-autoversion.h |  5 +++++
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 .git-revid-autoversion.h

diff --git a/.git-revid b/.git-revid
index f4d7770..74037ae 100755
--- a/.git-revid
+++ b/.git-revid
@@ -1,6 +1,9 @@
 #!/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
@@ -12,4 +15,25 @@ case $diffrc in
 1)	diffplus=+ ;;
 *)	exit $diffrc ;;
 esac
-printf '%.71s\n' "$desc$diffplus $log"
+
+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
diff --git a/.git-revid-autoversion.h b/.git-revid-autoversion.h
new file mode 100644
index 0000000..8502ce4
--- /dev/null
+++ b/.git-revid-autoversion.h
@@ -0,0 +1,5 @@
+/* goes with the automatically-generated output from .git-revid */
+#ifndef AUTOVERSION_H
+#define AUTOVERSION_H
+extern const char autoversion[];
+#endif /*AUTOVERSION_H*/
-- 
2.30.2