/*
This product contains certain software code or other information
("AT&T Software") proprietary to AT&T Corp. ("AT&T").  The AT&T
Software is provided to you "AS IS".  YOU ASSUME TOTAL RESPONSIBILITY
AND RISK FOR USE OF THE AT&T SOFTWARE.  AT&T DOES NOT MAKE, AND
EXPRESSLY DISCLAIMS, ANY EXPRESS OR IMPLIED WARRANTIES OF ANY KIND
WHATSOEVER, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, WARRANTIES OF
TITLE OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHTS, ANY
WARRANTIES ARISING BY USAGE OF TRADE, COURSE OF DEALING OR COURSE OF
PERFORMANCE, OR ANY WARRANTY THAT THE AT&T SOFTWARE IS "ERROR FREE" OR
WILL MEET YOUR REQUIREMENTS.

Unless you accept a license to use the AT&T Software, you shall not
reverse compile, disassemble or otherwise reverse engineer this
product to ascertain the source code for any AT&T Software.

(c) AT&T Corp. All rights reserved.  AT&T is a registered trademark of AT&T Corp.

***********************************************************************

History:

      24/11/99  - initial release by Hartmut Liefke, liefke@seas.upenn.edu
                                     Dan Suciu,      suciu@research.att.com
*/

//**************************************************************************
//**************************************************************************

// This module contains several auxiliary functions for loading compressed
// integer from a given data buffer

#ifndef __LOAD_HPP__
#define __LOAD_HPP__

typedef unsigned char TInputPtr;

class Load
{
public:
	static char Char(unsigned char * &ptr);
		// Loads a single character
	static unsigned long UInt32(unsigned char * &ptr);
		// Loads a compressed unsigned integer
	static unsigned long SInt32(TInputPtr * &ptr,char *isneg);
		// Loads a compressed signed integer
	static unsigned char* Data(unsigned char * &ptr,unsigned long len);
		// Returns data block of length 'len'
	static void DataBlock(TInputPtr * &ptr,unsigned char *dest,unsigned long len);
		// Copies a data block of length 'len' into '*dest'
};

#endif /* __LOAD_HPP__ */
