source: vendor/bash/3.1-p17/support/mkversion.sh

#! /bin/sh

# Simple program to make new version numbers for the shell.
# Big deal, but it was getting out of hand to do everything
# in the makefile.  This creates a file named by the -o option,
# otherwise everything is echoed to the standard output.

# Copyright (C) 1996-2002 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.

PROGNAME=`basename $0`
USAGE="$PROGNAME [-b] [-S srcdir] -d version -p patchlevel [-s status] [-o outfile]"

source_dir="."

while [ $# -gt 0 ]; do
        case "$1" in
        -o)     shift; OUTFILE=$1; shift ;;
        -b)     shift; inc_build=yes ;;
        -s)     shift; rel_status=$1; shift ;;
        -p)     shift; patch_level=$1; shift ;;
        -d)     shift; dist_version=$1; shift ;;
        -S)     shift; source_dir="$1"; shift ;;
        *)      echo "$PROGNAME: usage: $USAGE" >&2 ; exit 2 ;;
        esac
done

# Required arguments
if [ -z "$dist_version" ]; then
        echo "${PROGNAME}: required argument -d missing" >&2
        echo "$PROGNAME: usage: $USAGE" >&2
        exit 1
fi

#if [ -z "$patch_level" ]; then
#       echo "${PROGNAME}: required argument -p missing" >&2
#       echo "$PROGNAME: usage: $USAGE" >&2
#       exit 1
#fi

# Defaults
if [ -z "$rel_status" ]; then
        rel_status="release"
fi

build_ver=
if [ -r .build ]; then
        build_ver=`cat .build`
fi
if [ -z "$build_ver" ]; then
        build_ver=0
fi

# increment the build version if that's what's required

if [ -n "$inc_build" ]; then
        build_ver=`expr $build_ver + 1`
fi

# what's the patch level?
if [ -z "$patch_level" ]; then
        patchlevel_h=$source_dir/patchlevel.h
        if [ -s $patchlevel_h ]; then
                patch_level=`cat $patchlevel_h | grep '^#define[        ]*PATCHLEVEL' | awk '{print $NF}'`
        fi
fi
if [ -z "$patch_level" ]; then
        patch_level=0
fi

# If we have an output file specified, make it the standard output
if [ -n "$OUTFILE" ]; then
        if exec >$OUTFILE; then
                :
        else
                echo "${PROGNAME}: cannot redirect standard output to $OUTFILE" >&2
                exit 1
        fi
fi

# Output the leading comment.
echo "/* Version control for the shell.  This file gets changed when you say"
echo "   \`make version.h' to the Makefile.  It is created by mkversion. */"

# Output the distribution version.  Single numbers are converted to x.00.
# Allow, as a special case, `[:digit:].[:digit:][:alpha:]' for
# intermediate versions (e.g., `2.5a').
# Any characters other than digits and `.' are invalid.
case "$dist_version" in
[0-9].[0-9][a-z])       ;;      # special case
*[!0-9.]*)      echo "mkversion.sh: ${dist_version}: bad distribution version" >&2
                exit 1 ;;
*.*)    ;;
*)      dist_version=${dist_version}.00 ;;
esac

dist_major=`echo $dist_version | sed 's:\..*$::'`
[ -z "${dist_major}" ] && dist_major=0

dist_minor=`echo $dist_version | sed 's:^.*\.::'`
case "$dist_minor" in
"")     dist_minor=0 ;;
[a-z])  dist_minor=0${dist_minor} ;;
?)      dist_minor=${dist_minor} ;;
*)      ;;
esac

#float_dist=`echo $dist_version | awk '{printf "%.2f\n", $1}'`
float_dist=${dist_major}.${dist_minor}

echo
echo "/* The distribution version number of this shell. */"
echo "#define DISTVERSION \"${float_dist}\""

# Output the patch level
#echo
#echo "/* The patch level of this version of the shell. */"
#echo "#define PATCHLEVEL ${patch_level}"

# Output the build version
echo
echo "/* The last built version of this shell. */"
echo "#define BUILDVERSION ${build_ver}"

# Output the release status
echo
echo "/* The release status of this shell. */"
echo "#define RELSTATUS \"${rel_status}\""

# Output the SCCS version string
sccs_string="${float_dist}.${patch_level}(${build_ver}) ${rel_status} GNU"
echo
echo "/* A version string for use by sccs and the what command. */"
echo "#define SCCSVERSION \"@(#)Bash version ${sccs_string}\""

# extern function declarations
#echo
#echo '/* Functions from version.c. */'
#echo 'extern char *shell_version_string __P((void));'
#echo 'extern void show_shell_version __P((int));'

if [ -n "$inc_build" ]; then
        # Make sure we can write to .build
        if [ -f .build ] && [ ! -w .build ]; then
                echo "$PROGNAME: cannot write to .build, not incrementing build version" >&2
        else
                echo "$build_ver" > .build
        fi
fi
        
exit 0