pjs/modules/libjar/nsZipArchive.h

119 строки
3.1 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code,
* released March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All Rights
* Reserved.
*
* Contributors:
* Daniel Veditz <dveditz@netscape.com>
*/
/*
* nsZipArchive -- a class for manipulating the PKZIP file format.
*
* This class is incomplete. Currently it only does extraction
*/
#include "prtypes.h"
#define ZIP_MAGIC 0x5F5A4950L /* "_ZIP" */
#define ZIP_TABSIZE 256
#define ZIP_BUFLEN 32767
class nsZipItem;
class nsZipArchive
{
public:
/** cookie used to validate supposed objects passed from C code */
const PRInt32 kMagic;
nsZipArchive();
/** destructing the object closes the archive */
~nsZipArchive();
/**
* OpenArchive
*
* It's an error to call this more than once on the same nsZipArchive
* object. If we were allowed to use exceptions this would have been
* part of the constructor
*
* @param aArchiveName full pathname of archive
* @return status code
*/
PRInt32 OpenArchive( const char * aArchiveName );
/**
* ExtractFile
*
* @param aFilename name of file in archive to extract
* @param aOutname where to extract on disk
* @return status code
*/
PRInt32 ExtractFile( const char * aFilename, const char * aOutname );
private:
//--- private members ---
PRFileDesc *mFd;
nsZipItem* mFiles[ZIP_TABSIZE];
//--- private methods ---
nsZipArchive& operator=(const nsZipArchive& rhs); // don't want assignments
nsZipArchive(const nsZipArchive& rhs); // don't want copies
PRInt32 BuildFileList();
PRInt32 CopyItemToDisk( const nsZipItem* aItem, const char* aOutname );
const nsZipItem* GetFileItem( const char * aFilename );
PRUint16 HashName( const char* aName );
PRInt32 InflateItemToDisk( const nsZipItem* aItem, const char* aOutname );
};
/**
* nsZipItem -- a helper class for nsZipArchive
*
* each nsZipItem represents one file in the archive and all the
* information needed to manipulate it.
*/
class nsZipItem
{
public:
char* name;
PRUint32 offset;
PRUint32 headerloc;
PRUint16 compression;
PRUint32 size;
PRUint32 realsize;
PRUint32 crc32;
nsZipItem* next;
nsZipItem();
~nsZipItem();
private:
//-- prevent copies and assignments
nsZipItem& operator=(const nsZipItem& rhs);
nsZipItem(const nsZipItem& rhs);
};