#!/bin/sh

#

# Licensed to the Apache Software Foundation (ASF) under one or more

# contributor license agreements.  See the NOTICE file distributed with

# this work for additional information regarding copyright ownership.

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License.  You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#

#

# buildinfo.sh -- Determine Build Information

# Initially written by Ralf S. Engelschall <rse@apache.org>

# for the Apache's Autoconf-style Interface (APACI) 

#

#   argument line handling

#

error=no

if [ $# -ne 1 -a $# -ne 2 ]; then

    error=yes

fi

if [ $# -eq 2 -a "x$1" != "x-n" ]; then

    error=yes

fi

if [ "x$error" = "xyes" ]; then

    echo "$0:Error: invalid argument line"

    echo "$0:Usage: $0 [-n] <format-string>"

    echo "Where <format-string> can contain:"

    echo "   %u ...... substituted by determined username    (foo)"

    echo "   %h ...... substituted by determined hostname    (bar)"

    echo "   %d ...... substituted by determined domainname  (.com)"

    echo "   %D ...... substituted by determined day         (DD)"

    echo "   %M ...... substituted by determined month       (MM)"

    echo "   %Y ...... substituted by determined year        (YYYYY)"

    echo "   %m ...... substituted by determined monthname   (Jan)"

    exit 1

fi

if [ $# -eq 2 ]; then

    newline=no

    format_string="$2"

else

    newline=yes

    format_string="$1"

fi

#

#   initialization

#

username=''

hostname=''

domainname=''

time_day=''

time_month=''

time_year=''

time_monthname=''

#

#   determine username

#

username="$LOGNAME"

if [ "x$username" = "x" ]; then

    username="$USER"

    if [ "x$username" = "x" ]; then

        username="`(whoami) 2>/dev/null |\

                   awk '{ printf("%s", $1); }'`"

        if [ "x$username" = "x" ]; then

            username="`(who am i) 2>/dev/null |\

                       awk '{ printf("%s", $1); }'`"

            if [ "x$username" = "x" ]; then

                username='unknown'

            fi

        fi

    fi

fi

#

#   determine hostname and domainname

#

hostname="`(uname -n) 2>/dev/null |\

           awk '{ printf("%s", $1); }'`"

if [ "x$hostname" = "x" ]; then

    hostname="`(hostname) 2>/dev/null |\

               awk '{ printf("%s", $1); }'`"

    if [ "x$hostname" = "x" ]; then

        hostname='unknown'

    fi

fi

case $hostname in

    *.* )

        domainname=".`echo $hostname | cut -d. -f2-`"

        hostname="`echo $hostname | cut -d. -f1`"

        ;;

esac

if [ "x$domainname" = "x" ]; then

    if [ -f /etc/resolv.conf ]; then

        domainname="`egrep '^[ 	]*domain' /etc/resolv.conf | head -1 |\

                     sed -e 's/.*domain//' \

                         -e 's/^[ 	]*//' -e 's/^ *//' -e 's/^	*//' \

                         -e 's/^\.//' -e 's/^/./' |\

                     awk '{ printf("%s", $1); }'`"

        if [ "x$domainname" = "x" ]; then

            domainname="`egrep '^[ 	]*search' /etc/resolv.conf | head -1 |\

                         sed -e 's/.*search//' \

                             -e 's/^[ 	]*//' -e 's/^ *//' -e 's/^	*//' \

                             -e 's/ .*//' -e 's/	.*//' \

                             -e 's/^\.//' -e 's/^/./' |\

                         awk '{ printf("%s", $1); }'`"

        fi

    fi

fi

#

#   determine current time

#

time_day="`date '+%d' | awk '{ printf("%s", $1); }'`"

time_month="`date '+%m' | awk '{ printf("%s", $1); }'`"

time_year="`date '+%Y' 2>/dev/null | awk '{ printf("%s", $1); }'`"

if [ "x$time_year" = "x" ]; then

    time_year="`date '+%y' | awk '{ printf("%s", $1); }'`"

    case $time_year in

        [5-9][0-9]) time_year="19$time_year" ;;

        [0-4][0-9]) time_year="20$time_year" ;;

    esac

fi

case $time_month in

    1|01) time_monthname='Jan' ;;

    2|02) time_monthname='Feb' ;;

    3|03) time_monthname='Mar' ;;

    4|04) time_monthname='Apr' ;;

    5|05) time_monthname='May' ;;

    6|06) time_monthname='Jun' ;;

    7|07) time_monthname='Jul' ;;

    8|08) time_monthname='Aug' ;;

    9|09) time_monthname='Sep' ;;

      10) time_monthname='Oct' ;;

      11) time_monthname='Nov' ;;

      12) time_monthname='Dec' ;;

esac

#

#   create result string

#

if [ "x$newline" = "xyes" ]; then

    echo $format_string |\

    sed -e "s;%u;$username;g" \

        -e "s;%h;$hostname;g" \

        -e "s;%d;$domainname;g" \

        -e "s;%D;$time_day;g" \

        -e "s;%M;$time_month;g" \

        -e "s;%Y;$time_year;g" \

        -e "s;%m;$time_monthname;g"

else

    echo "${format_string}&" |\

    sed -e "s;%u;$username;g" \

        -e "s;%h;$hostname;g" \

        -e "s;%d;$domainname;g" \

        -e "s;%D;$time_day;g" \

        -e "s;%M;$time_month;g" \

        -e "s;%Y;$time_year;g" \

        -e "s;%m;$time_monthname;g" |\

    awk '-F&' '{ printf("%s", $1); }'

fi