зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.6 KiB
C++
60 строки
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#ifndef _FILEREADER_H_
|
|
#define _FILEREADER_H_
|
|
|
|
#include "prtypes.h"
|
|
#include "Pool.h"
|
|
|
|
#ifdef NO_NSPR
|
|
#include <stdio.h>
|
|
#else
|
|
#include "prio.h"
|
|
#endif
|
|
|
|
/* Reads a file, allocating space as neccessary */
|
|
class FileReader {
|
|
public:
|
|
FileReader(Pool &pool): pool(pool) { }
|
|
|
|
/* All read routines return True on success, False on failure */
|
|
|
|
/* read an unsigned byte */
|
|
bool readU1(char *destp, Int32 numItems);
|
|
|
|
/* read numItems unsigned 16-bit quantities, flipping bytes if neccessary.
|
|
* Returns true on success, false if unable to read numItems.
|
|
*/
|
|
bool readU2(Uint16 *destp, Int32 numItems);
|
|
|
|
/* read an unsigned 32-bit quantity, flipping bytes if neccessary */
|
|
bool readU4(Uint32 *destp, Int32 numItems);
|
|
|
|
virtual ~FileReader() { }
|
|
|
|
protected:
|
|
/* Yes this is an abstract class */
|
|
virtual bool read1(char *destp, int size) = 0;
|
|
Pool &pool;
|
|
};
|
|
|
|
|
|
|
|
#endif /* _FILEREADER_H_ */
|
|
|