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