#!/bin/bash
# -*- Mode: shell-script -*-
# Copyright (C) 2000 by Chmouel Boudjnah <chmouel@mandrakesoft.com>,
# MandrakeSoft
# Redistribution of this file is permitted under the terms of the GNU 
# Public License (GPL)
## description:
# Macroszification of files to be mandrake compliant, also do some check.

function usage () {
    rval=$1
    echo "Usage: $(basename $0) -d --help --nodiff --nocheck --clean SPEC-FILE"
    echo -e "\t-d: Product only a diff don't change nothing"
    echo -e '\t-o: Only change the mandir/infodir'
    echo -e "\t--nocheck: Don't try do check about Prefix %configure"
    echo -e "\t--clean: remove the old files after"
    echo -e "\t--nodiff: I don't want to see the diff output"
    echo -e "\t--help: This help"
    exit $rval;
}
while [[ $1 == -* ]];do
      case $1 in
	  -d)
	  only_diff=1;
	  shift;
	  ;;
	  -o)
	  only_fhs=1;
	  shift;
	  ;;
	  --nocheck)
	  nocheck=1;
	  shift;
	  ;;
	  --nodiff)
	  nodiff=1;
	  shift;
	  ;;
	  --clean)
	  clean=1;
	  shift;
	  ;;
	  -*)
	  usage 0
	  ;;
      esac
done

file=$1;

if [[ ! -f $file ]];then
    echo -e "Error: i really need a spec file to work\n";
    usage $val;
fi

[[ -z $nocheck ]] && egrep -q "^Prefix:[[:space:]]+" $file || {
    echo "sound like you don't have a Prefix set"
    exit;
}

egrep -q "^%configure" $file && {
    egrep -q "^%makeinstall" $file || {
	echo "sound like you don't have a %makeinstall"
	exit;
    }
}

mv -f  $file $file.old

if [[ -z $only_fhs ]];then
cat $file.old | perl -e "
while (<>) {
    s@[/]?(usr|%{[_]?prefix})/bin@%{_bindir}@g;
    s@[/]?(usr|%{[_]?prefix})/man@%{_mandir}@g;
    s@[/]?(usr|%{[_]?prefix})/sbin@%{_sbindir}@g;
    s@[/]?(usr|%{[_]?prefix})/etc@%{_sysconfdir}@g;
    s@[/]?(usr|%{[_]?prefix})/lib@%{_libdir}@g;
    s@[/]?(usr|%{[_]?prefix})/share@%{_datadir}@g;
    s@[/]?(usr|%{[_]?prefix})/include@%{_includedir}@g;
    s@[/]?(usr|%{[_]?prefix})/info@%{_infodir}@g;
    s@/etc@%{_sysconfdir}@;
    s@/usr@%{prefix}@;
   print;
}
" > $file
else
cat $file.old | perl -e "
while (<>) {
    s@[/]?(usr|%{[_]?prefix})/man@%{_mandir}@g;
    s@[/]?(usr|%{[_]?prefix})/info@%{_infodir}@g;
   print;
}
" > $file
fi

if [[ -z $nodiff ]];then
    diff -u $file.old $file
fi

if [[ -n $only_diff ]];then
    mv -f $file.old $file
fi

if [[ -n $clean ]];then
    rm -f $file.old
fi