From e57a6c5e6298e1685bfaed1e897d8b0b1fd8a549 Mon Sep 17 00:00:00 2001
From: Philippe Pepiot <phil@philpep.org>
Date: Sat, 16 Apr 2011 20:52:28 +0200
Subject: [PATCH] build system: add setlocalversion

Version is built from git commit id, for example wmfs-ga33ec04-dirty
-> 'g', this is a git repo
-> a33ec04 is the beginning of the commit id (sha1)
-> dirty mean that there is uncommitted changes

wmfs users gives their 'wmfs -v' and developers can easily identify wmfs
version.

Move status.sh to scripts/ with setlocalversion

Signed-off-by: Philippe Pepiot <phil@philpep.org>
---
 Makefile.in               |  2 +-
 scripts/setlocalversion   | 72 +++++++++++++++++++++++++++++++++++++++
 {rc => scripts}/status.sh |  0
 src/infobar.c             |  2 +-
 src/wmfs.c                |  2 +-
 5 files changed, 75 insertions(+), 3 deletions(-)
 create mode 100755 scripts/setlocalversion
 rename {rc => scripts}/status.sh (100%)

diff --git a/Makefile.in b/Makefile.in
index a17a550..2164f6b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -2,7 +2,7 @@ PROG=wmfs
 MAN=wmfs.1
 
 # wmfs version
-VERSION= 201011
+VERSION=$(shell scripts/setlocalversion)
 
 SRCS= \
 src/barwin.c \
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
new file mode 100755
index 0000000..cc2c128
--- /dev/null
+++ b/scripts/setlocalversion
@@ -0,0 +1,72 @@
+#!/bin/sh
+# Print additional version information for non-release trees.
+
+usage() {
+	echo "Usage: $0 [srctree]" >&2
+	exit 1
+}
+
+cd "${1:-.}" || usage
+
+# Check for git and a git repo.
+if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
+	# Do we have an untagged version?
+	if git name-rev --tags HEAD | grep -E '^HEAD[[:space:]]+(.*~[0-9]*|undefined)$' > /dev/null; then
+		if tag=`git describe 2>/dev/null`; then
+			echo $tag | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
+		else
+			printf '%s%s' -g $head
+		fi
+	fi
+
+	# Is this git on svn?
+	if git config --get svn-remote.svn.url >/dev/null; then
+	        printf -- '-svn%s' "`git svn find-rev $head`"
+	fi
+
+	# Are there uncommitted changes?
+	git update-index --refresh --unmerged > /dev/null
+	if git diff-index --name-only HEAD | grep -v "^scripts/package" \
+	    | read dummy; then
+		printf '%s' -dirty
+	fi
+
+	# All done with git
+	exit
+fi
+
+# Check for mercurial and a mercurial repo.
+if hgid=`hg id 2>/dev/null`; then
+	tag=`printf '%s' "$hgid" | cut -d' ' -f2`
+
+	# Do we have an untagged version?
+	if [ -z "$tag" -o "$tag" = tip ]; then
+		id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
+		printf '%s%s' -hg "$id"
+	fi
+
+	# Are there uncommitted changes?
+	# These are represented by + after the changeset id.
+	case "$hgid" in
+		*+|*+\ *) printf '%s' -dirty ;;
+	esac
+
+	# All done with mercurial
+	exit
+fi
+
+# Check for svn and a svn repo.
+if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
+	rev=`echo $rev | awk '{print $NF}'`
+	changes=`svn status 2>/dev/null | grep '^[AMD]' | wc -l`
+
+	# Are there uncommitted changes?
+	if [ $changes != 0 ]; then
+		printf -- '-svn%s%s' "$rev" -dirty
+	else
+		printf -- '-svn%s' "$rev"
+	fi
+
+	# All done with svn
+	exit
+fi
diff --git a/rc/status.sh b/scripts/status.sh
similarity index 100%
rename from rc/status.sh
rename to scripts/status.sh
diff --git a/src/infobar.c b/src/infobar.c
index 660c023..b89f5a9 100644
--- a/src/infobar.c
+++ b/src/infobar.c
@@ -127,7 +127,7 @@ infobar_init(void)
           barwin_refresh(infobar[sc].bar);
 
           /* Default statustext is set here */
-          infobar[sc].statustext = xstrdup(WMFS_VERSION);
+          infobar[sc].statustext = xstrdup("wmfs"WMFS_VERSION);
 
           infobar_draw(sc);
      }
diff --git a/src/wmfs.c b/src/wmfs.c
index f73fb38..3e45f4a 100644
--- a/src/wmfs.c
+++ b/src/wmfs.c
@@ -486,7 +486,7 @@ main(int argc, char **argv)
                break;
 
           case 'v':
-               printf("WMFS "WMFS_VERSION"\n");
+               printf("wmfs"WMFS_VERSION"\n");
                exit(EXIT_SUCCESS);
                break;