106 lines
4.0 KiB
Objective-C
106 lines
4.0 KiB
Objective-C
/****************************************************************************
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Copyright (c) 2006, Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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//------------------------------------------------------------------------------
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/**
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@class IO::ZipFileStream
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Wraps a file in a zip archive into a stream.
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The file int the zip-archive is not cached. Only forward reading is allowed.
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Only one file must be opened in that archive at a time.
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The IO::Server allows transparent access to data in zip files through
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normal "file:" URIs by first checking whether the file is part of
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a mounted zip archive. Only if this is not the case, the file will
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be opened as normal.
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To force reading from a zip archive, use an URI of the following
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format:
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zip://[samba server]/bla/blob/archive.zip?file=path/in/zipfile&pwd=password
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This assumes that the URI scheme "zip" has been associated with
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the ZipFileStream class using the IO::Server::RegisterUriScheme()
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method.
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The server and local path part of the URI contain the path to
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the zip archive file. The query part contains the path of
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the file in the zip archive and an optional password.
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*/
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#include "io/stream.h"
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#include "io/zipfs/ziparchive.h"
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//------------------------------------------------------------------------------
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namespace IO
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{
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class ZipFileEntry;
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class ZipFileStream : public Stream
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{
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__DeclareClass(ZipFileStream);
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public:
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/// constructor
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ZipFileStream();
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/// destructor
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virtual ~ZipFileStream();
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/// memory streams support reading
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virtual bool CanRead() const;
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/// memory streams support writing
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virtual bool CanWrite() const;
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/// memory streams support seeking
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virtual bool CanSeek() const;
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/// memory streams are mappable
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virtual bool CanBeMapped() const;
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/// get the size of the stream in bytes
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virtual Size GetSize() const;
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/// get the current position of the read/write cursor
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virtual Position GetPosition() const;
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/// open the stream
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virtual bool Open();
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/// open
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virtual bool Open(const GPtr<ZipArchive>& archive);
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/// close the stream
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virtual void Close();
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/// directly read from the stream
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virtual Size Read(void* ptr, Size numBytes);
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/// seek in stream, only forward seeks are allowed
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virtual void Seek(Offset offset, SeekOrigin origin);
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/// return true if end-of-stream reached
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virtual bool Eof() const;
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/// map for direct memory-access
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virtual void* Map();
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/// unmap a mapped stream
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virtual void Unmap();
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virtual bool IsHeader( void* headPtr, Size numBytes ) ;
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private:
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Size size;
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Position position;
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ZipFileEntry *zipFileEntry;
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ZipArchive* mzipArchive;
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unsigned char *mapBuffer;
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};
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} // namespace IO
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//------------------------------------------------------------------------------
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