#!/bin/sh

: '{{ TOOLDOC 1
/*
 * Name 	: ireduce - reduce the dbspace size by a percentage on a 16MB boundary
 *
 * Usage	: ireduce [ -b <boundary> ] <percent> <envbuild.cfg file> 
 *
 * Arguments	: -b - This is by default, 16MB but can be set to reflect the
 *		       physical partition size of the logical volume manager.
 *
 *		  <percent>	- a percentage reduction or increase to the
 *				  dbspaces. 
 *
 *		  <envbuild.cfg> - an envbuild(1DB) config file.
 *
 * Description	: ireduce shrinks or grows an envbuild configuration file by 
 *		  a requested percentage.
 *
 * Notes	: No dbspace can occupy less than 16MB 
 *
 * Status	: INTERNAL DB TEAM USE ONLY
 *
 * See also	: envbuild(1DB) 
 *
 * Sccs 	: @(#)ireduce	1.2
 *
 * Dated	: 96/07/23 14:22:48 
 *
 * Continuus
 * 
 * Type		: %cvtype: %
 * Created by	: %created_by: %
 * Date Created	: %date_created: %
 * Date Modified: %date_modified: %
 * Derived by	: %derived_by: %
 * File/Version	: %filespec: %
 *
 */
'

if [ $1 = "-b" ]
then
    :
fi

PERCENT=${1:-10}

awk -F: ' BEGIN { 
	total = 0; 
	newtotal = 0;
} 
{
    if( $2 ~ /^rootdbs/ || $2 ~ /^dbdbs/ || $2 ~ /^logspace/ )
    {
	print $0
	continue
    }

   total += $2

   newsize = $2 - ($2 * ( '"$PERCENT"' / 100 ));

   if (newsize % 4096)
	newsize += 4;

   if(newsize < 16384)
	newsize = 16384; 

   newtotal += newsize;

   printf("%s:%d\n", $1, newsize);

} END { 
	printf("Original %d K New %d Percentage %d\n",
		total, newtotal, (newtotal/total * 100)) }' $1

exit 0

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