File: setlocalversion

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coccinelle 1.0.8.deb-5
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#!/bin/sh
#
# Copyright (c) 2005-2006 Ryan Anderson <ryan@michonline.com>
# Copyright (c) 2006 Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
# Copyright (c) 2006 Uwe Zeisberger <zeisberg@informatik.uni-freiburg.de>
# Copyright (c) 2007 Aron Griffis <aron@hp.com>
# Copyright (c) 2007 Theodore Ts'o <tytso@mit.edu>
# Copyright (c) 2008 Bryan Wu <bryan.wu@analog.com>
# Copyright (c) 2008 Mike Frysinger <vapier@gentoo.org>
# Copyright (c) 2008 Peter Korsgaard <jacmet@sunsite.dk>
# Copyright (c) 2008 Sebastian Siewior <lkml@ml.breakpoint.cc>
# Copyright (c) 2008 Trent Piepho <tpiepho@freescale.com>
# Copyright (c) 2009 Mike Frysinger <vapier.adi@gmail.com>
# Copyright (c) 2009 Nico Schottelius <nico-linuxsetlocalversion@schottelius.org>
# Copyright (c) 2009 Peter Korsgaard <jacmet@sunsite.dk>
# Copyright (c) 2010 Linus Torvalds <torvalds@linux-foundation.org>
# Copyright (c) 2010 Michael Prokop <mika@grml.org>
# Copyright (c) 2010 Michał Górny <gentoo@mgorny.alt.pl>
# Copyright (c) 2010 Michal Marek <mmarek@suse.cz>
# Copyright (c) 2010 Milton Miller <miltonm@bga.com>
# Copyright (c) 2011 Mike Crowe <mcrowe@zipitwireless.com>
# Copyright (c) 2012 Roland Dreier <roland@purestorage.com>
# Copyright (c) 2013 Christian Kujau <lists@nerdbynature.de>
# Copyright (c) 2013 Christophe Leroy <christophe.leroy@c-s.fr>
# Copyright (c) 2013 Franck Bui-Huu <fbuihuu@gmail.com>
# Copyright (c) 2015 Luis R. Rodriguez <mcgrof@do-not-panic.com>
#
# This file is released under the GPLv2.
#
# Taken from the Linux kernel as of v4.2-rc2 with a few modifications
# described below.
#
# This scripts adds local version information from the version
# control systems. It was taken from the Linux kernel as of v4.2-rc2
# and simplified for use on Coccinelle by mcgrof. The version info
# was hard coded to use long version. The svn postfix details were
# also removed. I also added the option to enable this script to
# work well for trees that do not use PGP signed tags or annotated
# tags (git tag -s or git tag -a), git describe by default will only
# look for these tags. If you do not use these you will want to set
# the below variable to TAGS="--tags". If  you requires --tags, consider
# to start signing your releases "git tag -s" and use a subkey for that.
# If you do that, consider also using another PGP subkey for annotating
# releases as deprecated.
#
# Set to empty variable if you use properly signed tags. You should do this!
TAGS="--tags"

srctree=.

scm_version()
{
	local short
	short=false


	# Check for git and a git repo.
	if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
	   head=`git rev-parse --verify --short HEAD 2>/dev/null`; then

		# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
		# it, because this version is defined in the top level Makefile.
		if [ -z "`git describe $TAGS --exact-match 2>/dev/null`" ]; then

			# If only the short version is requested, don't bother
			# running further git commands
			if $short; then
				echo "+"
				return
			fi
			# If we are past a tagged commit (like
			# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
			if atag="`git describe $TAGS 2>/dev/null`"; then
				echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'

			# If we don't have a tag at all we print -g{commitish}.
			else
				printf '%s%s' -g $head
			fi
		fi

		# Check for uncommitted changes
		if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
			printf '%s' -dirty
		fi

		# All done with git
		return
	fi

	# Check for mercurial and a mercurial repo.
	if test -d .hg && hgid=`hg id 2>/dev/null`; then
		# Do we have an tagged version?  If so, latesttagdistance == 1
		if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
			id=`hg log -r . --template '{latesttag}'`
			printf '%s%s' -hg "$id"
		else
			tag=`printf '%s' "$hgid" | cut -d' ' -f2`
			if [ -z "$tag" -o "$tag" = tip ]; then
				id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
				printf '%s%s' -hg "$id"
			fi
		fi

		# Are there uncommitted changes?
		# These are represented by + after the changeset id.
		case "$hgid" in
			*+|*+\ *) printf '%s' -dirty ;;
		esac

		# All done with mercurial
		return
	fi
}

res="$res$(scm_version)"
echo "$res"