#!/bin/sh

PRODUCT=$1
RPM_HEADER=$2
RPM_FILES=$3

SYS_SRC_DIR=/usr/src/packages/

VERSION=`make -s version`
rev=`echo $VERSION | cut -f1 -d"-"`
rel=`echo $VERSION | cut -f2 -d"-"`
TARBALL_NAME=$PRODUCT-$VERSION.tar.gz
TARBALL_DEST=$SYS_SRC_DIR/SOURCES/$TARBALL_NAME

printRPMHeaderBeforeDescription()
{
    cat $RPM_HEADER |  awk  \
        'BEGIN{flag=1}\
        { \
          if ($1 == "Description:" )\
            flag = 0;\
          if( flag == 1 ) \
              print $0;  \
        }'
}

printRPMHeaderAfterDescription()
{
    cat $RPM_HEADER |  awk  \
        'BEGIN{flag=0}\
        { \
          if( flag == 1 ) \
              print $0;  \
          if ($1 == "Description:" )\
            flag = 1;\
        }'
}

makeSpec()
{
    cat <<-LEOF
Name: $PRODUCT
`printRPMHeaderBeforeDescription`
Version: $rev
Release: $rel
Source: $TARBALL_NAME
Packager: `awk -f - /etc/passwd <<-EOF
BEGIN { FS=":"}
{
        if( \\$1 == "$LOGNAME" )
                print \\$5
}
EOF`

%description

`printRPMHeaderAfterDescription`

%prep

%setup

%build

%install

tar cf - . | tar xvfC - /

%files

LEOF

    cat $RPM_FILES | while read perm src dst
    do
        echo "%attr($perm, root, root) $dst"
    done
    echo
}

makedir()
{
    [ -d $1 ] || mkdir -p $1 
}

makeTarball()
{
    IDIR=$PRODUCT-$rev
    [ -d $IDIR ] && rm -rf $IDIR

    cat $RPM_FILES | while read perm src dst
    do
        makedir $IDIR/`dirname $dst`
        install $src $IDIR/$dst
    done

    tar cf - $IDIR | gzip > $TARBALL_DEST
}

check_args()
{
    if [ ! -f $RPM_HEADER ] 
    then
        echo RPM Header file == $RPM_HEADER == missing
        return 1
    fi
    if [ ! -f $RPM_FILES ] 
    then
        echo RPM Files file == $RPM_FILES == missing
        return 1
    fi

    return 0
}

if ! check_args 
then 
    exit 1; 
fi

makeTarball 

makeSpec > $PRODUCT.spec

rpmbuild -bb --clean $PRODUCT.spec

exit 0