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