#!/bin/sh -
#
# Copyright (c) 1984, 1986, 1990, 1993
#	The Regents of the University of California.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. Neither the name of the University nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#	@(#)newvers.sh	8.1 (Berkeley) 4/20/94
# $FreeBSD: stable/11/sys/conf/newvers.sh 324397 2017-10-07 20:18:20Z emaste $

# Command line options:
#
#     -r               Reproducible build.  Do not embed directory names, user
#                      names, time stamps or other dynamic information into
#                      the output file.  This is intended to allow two builds
#                      done at different times and even by different people on
#                      different hosts to produce identical output.
#
#     -R               Reproducible build if the tree represents an unmodified
#                      checkout from a version control system.  Metadata is
#                      included if the tree is modified.

setglobal TYPE = '"FreeBSD'"
setglobal REVISION = '"11.1'"
setglobal BRANCH = '"STABLE'"
if test -n $(BRANCH_OVERRIDE) {
	setglobal BRANCH = $(BRANCH_OVERRIDE)
}
setglobal RELEASE = ""$(REVISION)-$(BRANCH)""
setglobal VERSION = ""$(TYPE) $(RELEASE)""

#
# findvcs dir
#	Looks up directory dir at world root and up the filesystem
#
proc findvcs
{
	local savedir

	setglobal savedir = $[pwd]
	cd $(SYSDIR)/..
	while test $[pwd] != "/" {
		if test -e "./$1" {
			setglobal VCSDIR = "$[pwd]"/$1""
			cd $(savedir)
			return 0
		}
		cd ..
	}
	cd $(savedir)
	return 1
}

if test -z $(SYSDIR) {
    setglobal SYSDIR = "$[dirname $0]/.."
}

if test -n $(PARAMFILE) {
	setglobal RELDATE = $[awk '/__FreeBSD_version.*propagated to newvers/ {print $3}' \
		$(PARAMFILE)]
} else {
	setglobal RELDATE = $[awk '/__FreeBSD_version.*propagated to newvers/ {print $3}' \
		$(SYSDIR)/sys/param.h]
}

setglobal b = 'share/examples/etc/bsd-style-copyright'
if test -r "$(SYSDIR)/../COPYRIGHT" {
	setglobal year = $[sed -Ee '/^Copyright .* The FreeBSD Project/!d;s/^.*1992-([0-9]*) .*$/\1/g' $(SYSDIR)/../COPYRIGHT]
} else {
	setglobal year = $[date +%Y]
}
# look for copyright template
for bsd_copyright in [../$b ../../$b ../../../$b /usr/src/$b /usr/$b]
{
	if test -r $bsd_copyright {
		setglobal COPYRIGHT = $[sed \
		    -e "s/\[year\]/1992-$year/" \
		    -e 's/\[your name here\]\.* /The FreeBSD Project./' \
		    -e 's/\[your name\]\.*/The FreeBSD Project./' \
		    -e '/\[id for your version control system, if any\]/d' \
		    $bsd_copyright] 
		break
	}
}

# no copyright found, use a dummy
if test -z $COPYRIGHT {
	setglobal COPYRIGHT = ""/*-
 * Copyright (c) 1992-$year The FreeBSD Project.
 * All rights reserved.
 *
 */""
}

# add newline
setglobal COPYRIGHT = ""$COPYRIGHT
""

# VARS_ONLY means no files should be generated, this is just being
# included.
if test -n $VARS_ONLY {
	return 0
}

setglobal LC_ALL = 'C'; export LC_ALL
if test ! -r version
{
	echo 0 > version
}

touch version
setglobal v = $[cat version]
setglobal u = $(USER:-root)
setglobal d = $[pwd]
setglobal h = $(HOSTNAME:-`hostname`)
if test -n $SOURCE_DATE_EPOCH {
	if ! setglobal t = $[date -r $SOURCE_DATE_EPOCH !2 >/dev/null] {
		echo "Invalid SOURCE_DATE_EPOCH" > !2
		exit 1
	}
} else {
	setglobal t = $[date]
}
setglobal i = $[$(MAKE:-make) -V KERN_IDENT]
setglobal compiler_v = $[$[$(MAKE:-make) -V CC] -v !2 > !1 | grep -w 'version]

for dir in [/usr/bin /usr/local/bin] {
	if test ! -z $(svnversion)  {
		break
	}
	if test -x "$(dir)/svnversion" && test -z $(svnversion)  {
		# Run svnversion from ${dir} on this script; if return code
		# is not zero, the checkout might not be compatible with the
		# svnversion being used.
		$(dir)/svnversion $[realpath $(0)] >/dev/null !2 > !1
		if test $Status -eq 0 {
			setglobal svnversion = "$(dir)/svnversion"
			break
		}
	}
}

if test -z $(svnversion) && test -x /usr/bin/svnliteversion  {
	/usr/bin/svnliteversion $[realpath $(0)] >/dev/null !2 > !1
	if test $Status -eq 0 {
		setglobal svnversion = '/usr/bin/svnliteversion'
	} else {
		setglobal svnversion = ''
	}
}

for dir in [/usr/bin /usr/local/bin] {
	if test -x "$(dir)/p4" && test -z $(p4_cmd)  {
		setglobal p4_cmd = "$(dir)/p4"
	}
}

if findvcs .git {
	for dir in [/usr/bin /usr/local/bin] {
		if test -x "$(dir)/git"  {
			setglobal git_cmd = ""$(dir)/git --git-dir=$(VCSDIR)""
			break
		}
	}
}

if findvcs .hg {
	for dir in [/usr/bin /usr/local/bin] {
		if test -x "$(dir)/hg"  {
			setglobal hg_cmd = ""$(dir)/hg -R $(VCSDIR)""
			break
		}
	}
}

if test -n $svnversion  {
	setglobal svn = $[cd $(SYSDIR) && $svnversion !2 >/dev/null]
	match $svn {
	with [0-9]*[MSP]|*:*
		setglobal svn = "" r$(svn)""
		setglobal modified = 'true'
		
	with [0-9]*
		setglobal svn = "" r$(svn)""
		
	with *
		unset svn
		
	}
}

if test -n $git_cmd  {
	setglobal git = $[$git_cmd rev-parse --verify --short HEAD !2 >/dev/null]
	setglobal svn = $[$git_cmd svn find-rev $git !2 >/dev/null]
	if test -n $svn  {
		setglobal svn = "" r$(svn)""
		setglobal git = ""=$(git)""
	} else {
		setglobal svn = $[$git_cmd log --grep '^git-svn-id:' | \
		    grep '^    git-svn-id:' | head -1 | \
		    sed -n 's/^.*@\([0-9][0-9]*\).*$/\1/p]
		if test -z $svn  {
			setglobal svn = $[$git_cmd log --format='format:%N' | \
			     grep '^svn ' | head -1 | \
			     sed -n 's/^.*revision=\([0-9][0-9]*\).*$/\1/p]
		}
		if test -n $svn  {
			setglobal svn = "" r$(svn)""
			setglobal git = ""+$(git)""
		} else {
			setglobal git = "" $(git)""
		}
	}
	setglobal git_b = $[$git_cmd rev-parse --abbrev-ref HEAD]
	if test -n $git_b  {
		setglobal git = ""$(git)($(git_b))""
	}
	if $git_cmd --work-tree=$(VCSDIR)/.. diff-index \
	    --name-only HEAD | read dummy {
		setglobal git = ""$(git)-dirty""
		setglobal modified = 'true'
	}
}

if test -n $p4_cmd  {
	setglobal p4version = $[cd $(SYSDIR) && $p4_cmd changes -m1 "./...#have" !2 > !1 | \
		awk '{ print $2 }]
	match $p4version {
	with [0-9]*
		setglobal p4version = "" $(p4version)""
		setglobal p4opened = $[cd $(SYSDIR) && $p4_cmd opened ./... !2 > !1]
		match $p4opened {
		with File* 
		with //*
			setglobal p4version = ""$(p4version)+edit""
			setglobal modified = 'true'
			
		}
		
	with *	unset p4version 
	}
}

if test -n $hg_cmd  {
	setglobal hg = $[$hg_cmd id !2 >/dev/null]
	setglobal svn = $[$hg_cmd svn info !2 >/dev/null | \
		awk -F': ' '/Revision/ { print $2 }]
	if test -n $svn  {
		setglobal svn = "" r$(svn)""
	}
	if test -n $hg  {
		setglobal hg = "" $(hg)""
	}
}

setglobal include_metadata = 'true'
while getopts rR opt {
	match $opt {
	with r
		setglobal include_metadata = ''
		
	with R
		if test -z $(modified) {
			setglobal include_metadata = ''
		}
	}
}
shift $shExpr('OPTIND - 1')

if test -z $(include_metadata) {
	setglobal VERINFO = ""$(VERSION) $(svn)$(git)$(hg)$(p4version)""
	setglobal VERSTR = ""$(VERINFO)\\n""
} else {
	setglobal VERINFO = ""$(VERSION) #$(v)$(svn)$(git)$(hg)$(p4version): $(t)""
	setglobal VERSTR = ""$(VERINFO)\\n    $(u)@$(h):$(d)\\n""
}

cat << """ > vers.c
$COPYRIGHT
#define SCCSSTR "@(#)$(VERINFO)"
#define VERSTR "$(VERSTR)"
#define RELSTR "$(RELEASE)"

char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;
char version[sizeof(VERSTR) > 256 ? sizeof(VERSTR) : 256] = VERSTR;
char compiler_version[] = "$(compiler_v)";
char ostype[] = "$(TYPE)";
char osrelease[sizeof(RELSTR) > 32 ? sizeof(RELSTR) : 32] = RELSTR;
int osreldate = $(RELDATE);
char kern_ident[] = "$(i)";
"""
> vers.c
$COPYRIGHT
#define SCCSSTR "@(#)${VERINFO}"
#define VERSTR "${VERSTR}"
#define RELSTR "${RELEASE}"

char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;
char version[sizeof(VERSTR) > 256 ? sizeof(VERSTR) : 256] = VERSTR;
char compiler_version[] = "${compiler_v}";
char ostype[] = "${TYPE}";
char osrelease[sizeof(RELSTR) > 32 ? sizeof(RELSTR) : 32] = RELSTR;
int osreldate = ${RELDATE};
char kern_ident[] = "${i}";
EOF

echo $shExpr('v + 1') > version