diff -r 000000000000 -r 4f2f89ce4247 WebCore/platform/BlobItem.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/WebCore/platform/BlobItem.h Fri Sep 17 09:02:29 2010 +0300 @@ -0,0 +1,209 @@ +/* + * Copyright (C) 2010 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef BlobItem_h +#define BlobItem_h + +#include "PlatformString.h" +#include +#include +#include +#include +#include + +namespace WebCore { + +class ByteArrayBlobItem; +class DataBlobItem; +class DataRangeBlobItem; +class FileBlobItem; +class FileRangeBlobItem; +class StringBlobItem; + +// A base interface for all arbitrary-data-object component items. +// The BlobItem and its subclasses are structured like the following: +// BlobItem +// | +// +-------> DataBlobItem +// | | +// | +---------> StringBlobItem +// | +---------> ByteArrayBlobItem +// | +---------> DataRangeBlobItem +// | +// +-------> FileBlobItem +// | +// +---------> FileRangeBlobItem +// +class BlobItem : public RefCounted { +public: + virtual ~BlobItem() { } + virtual unsigned long long size() const = 0; + + virtual const DataBlobItem* toDataBlobItem() const { return 0; } + virtual const StringBlobItem* toStringBlobItem() const { return 0; } + virtual const ByteArrayBlobItem* toByteArrayBlobItem() const { return 0; } + virtual const FileBlobItem* toFileBlobItem() const { return 0; } +#if ENABLE(BLOB_SLICE) + virtual const DataRangeBlobItem* toDataRangeBlobItem() const { return 0; } + virtual const FileRangeBlobItem* toFileRangeBlobItem() const { return 0; } + + // Note: no external methods except for Blob::slice should call this. + virtual PassRefPtr slice(long long start, long long length) = 0; +#endif // ENABLE(BLOB_SLICE) + +protected: + BlobItem() { } +}; + +typedef Vector > BlobItemList; + +class DataBlobItem : public BlobItem { +public: + virtual const char* data() const = 0; + + // BlobItem methods. + virtual const DataBlobItem* toDataBlobItem() const { return this; } +#if ENABLE(BLOB_SLICE) + virtual PassRefPtr slice(long long start, long long length); +#endif // ENABLE(BLOB_SLICE) +}; + +class FileBlobItem : public BlobItem { +public: + static PassRefPtr create(const String& path); +#if ENABLE(DIRECTORY_UPLOAD) + static PassRefPtr create(const String& path, const String& relativePath); +#endif + virtual const String& name() const { return m_fileName; } + virtual const String& path() const { return m_path; } +#if ENABLE(DIRECTORY_UPLOAD) + const String& relativePath() const { return m_relativePath; } +#endif + + // BlobItem methods. + virtual unsigned long long size() const; + virtual const FileBlobItem* toFileBlobItem() const { return this; } +#if ENABLE(BLOB_SLICE) + virtual PassRefPtr slice(long long start, long long length); +#endif // ENABLE(BLOB_SLICE) + +protected: + FileBlobItem(const String& path); +#if ENABLE(DIRECTORY_UPLOAD) + FileBlobItem(const String& path, const String& relativePath); +#endif + String m_path; + String m_fileName; +#if ENABLE(DIRECTORY_UPLOAD) + String m_relativePath; +#endif +}; + +class StringBlobItem : public DataBlobItem { +public: + static PassRefPtr create(const CString&); + const CString& cstr() const { return m_data; } + + // BlobItem methods. + virtual unsigned long long size() const { return m_data.length(); } + virtual const StringBlobItem* toStringBlobItem() const { return this; } + + // DataBlobItem methods. + virtual const char* data() const { return m_data.data(); } + +private: + StringBlobItem(const CString&); + CString m_data; +}; + +class ByteArrayBlobItem : public DataBlobItem { +public: + static PassRefPtr create(const char* data, size_t size); + + // BlobItem methods. + virtual unsigned long long size() const { return m_bytesArray.size(); } + virtual const ByteArrayBlobItem* toByteArrayBlobItem() const { return this; } + + // DataBlobItem methods. + virtual const char* data() const { return m_bytesArray.data(); } + +private: + ByteArrayBlobItem(const char* data, size_t size); + Vector m_bytesArray; +}; + +#if ENABLE(BLOB_SLICE) + +// BlobItem class for sliced data (string or bytes-array). +class DataRangeBlobItem : public DataBlobItem { +public: + static PassRefPtr create(PassRefPtr, long long start, long long length); + + // BlobItem methods. + virtual unsigned long long size() const { return m_length; } + virtual const DataRangeBlobItem* toDataRangeBlobItem() const { return this; } + + // DataBlobItem methods. + virtual const char* data() const; + +private: + DataRangeBlobItem(PassRefPtr, long long start, long long length); + RefPtr m_item; + long long m_start; + long long m_length; +}; + +class FileRangeBlobItem : public FileBlobItem { +public: + static PassRefPtr create(const String& path, long long start, long long length, double snapshotModificationTime); + long long start() const { return m_start; } + double snapshotModificationTime() const { return m_snapshotModificationTime; } + + // BlobItem methods. + virtual unsigned long long size() const { return m_length; } + virtual const FileRangeBlobItem* toFileRangeBlobItem() const { return this; } + + // FileBlobItem methods. + virtual const String& name() const { return m_uniqueName; } + +private: + FileRangeBlobItem(const String& path, long long start, long long length, double snapshotModificationTime); + long long m_start; + long long m_length; + String m_uniqueName; + + double m_snapshotModificationTime; +}; + +#endif // ENABLE(BLOB_SLICE) + +} // namespace WebCore + +#endif // BlobItem_h