Index: WebCore/platform/BlobItem.h |
diff --git a/WebCore/platform/BlobItem.h b/WebCore/platform/BlobItem.h |
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+/* |
+ * 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 "TextEncoding.h" |
+#include <wtf/OwnPtr.h> |
+#include <wtf/PassRefPtr.h> |
+#include <wtf/RefCounted.h> |
+#include <wtf/Vector.h> |
+#include <wtf/text/CString.h> |
+ |
+namespace WebCore { |
+ |
+// String ending types. |
+enum LineEnding { |
+ EndingTransparent = 0, |
+ EndingLF, |
+ EndingCR, |
+ EndingCRLF, |
+}; |
+ |
+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<BlobItem> { |
+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<BlobItem> slice(long long start, long long length) = 0; |
+#endif // ENABLE(BLOB_SLICE) |
+ |
+protected: |
+ BlobItem() { } |
+}; |
+ |
+typedef Vector<RefPtr<BlobItem> > 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<BlobItem> slice(long long start, long long length); |
+#endif // ENABLE(BLOB_SLICE) |
+}; |
+ |
+class FileBlobItem : public BlobItem { |
+public: |
+ static PassRefPtr<BlobItem> create(const String& path); |
+ virtual const String& name() const { return m_fileName; } |
+ virtual const String& path() const { return m_path; } |
+ |
+ // BlobItem methods. |
+ virtual unsigned long long size() const; |
+ virtual const FileBlobItem* toFileBlobItem() const { return this; } |
+#if ENABLE(BLOB_SLICE) |
+ virtual PassRefPtr<BlobItem> slice(long long start, long long length); |
+#endif // ENABLE(BLOB_SLICE) |
+ |
+protected: |
+ FileBlobItem(const String& path); |
+ String m_path; |
+ String m_fileName; |
+}; |
+ |
+class StringBlobItem : public DataBlobItem { |
+public: |
+ static PassRefPtr<BlobItem> create(const String&, LineEnding, TextEncoding); |
+ static PassRefPtr<BlobItem> 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 String&, LineEnding, TextEncoding); |
+ StringBlobItem(const CString&); |
+ static CString convertToCString(const String&, LineEnding, TextEncoding); |
+ CString m_data; |
+}; |
+ |
+class ByteArrayBlobItem : public DataBlobItem { |
+public: |
+ static PassRefPtr<BlobItem> 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<char> m_bytesArray; |
+}; |
+ |
+#if ENABLE(BLOB_SLICE) |
+ |
+// BlobItem class for sliced data (string or bytes-array). |
+class DataRangeBlobItem : public DataBlobItem { |
+public: |
+ static PassRefPtr<BlobItem> create(PassRefPtr<DataBlobItem>, 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<DataBlobItem>, long long start, long long length); |
+ RefPtr<DataBlobItem> m_item; |
+ long long m_start; |
+ long long m_length; |
+}; |
+ |
+class FileRangeBlobItem : public FileBlobItem { |
+public: |
+ static PassRefPtr<BlobItem> 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 |