Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 118 insertions, 0 deletions

diff --git a/Source/WebCore/fileapi/FileReaderLoader.h b/Source/WebCore/fileapi/FileReaderLoader.h
new file mode 100644
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+++ b/Source/WebCore/fileapi/FileReaderLoader.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 FileReaderLoader_h
+#define FileReaderLoader_h
+
+#if ENABLE(BLOB)
+
+#include "FileError.h"
+#include "KURL.h"
+#include "TextEncoding.h"
+#include "ThreadableLoaderClient.h"
+#include <wtf/Forward.h>
+#include <wtf/text/WTFString.h>
+
+namespace WebCore {
+
+class Blob;
+class FileReaderLoaderClient;
+class ScriptExecutionContext;
+class TextResourceDecoder;
+class ThreadableLoader;
+
+class FileReaderLoader : public ThreadableLoaderClient {
+public:
+    enum ReadType {
+        ReadAsArrayBuffer,
+        ReadAsBinaryString,
+        ReadAsText,
+        ReadAsDataURL
+    };
+
+    // If client is given, do the loading asynchronously. Otherwise, load synchronously.
+    FileReaderLoader(ReadType, FileReaderLoaderClient*);
+    ~FileReaderLoader();
+
+    void start(ScriptExecutionContext*, Blob*);
+    void cancel();
+
+    // ThreadableLoaderClient
+    virtual void didReceiveResponse(unsigned long, const ResourceResponse&);
+    virtual void didReceiveData(const char*, int);
+    virtual void didFinishLoading(unsigned long, double);
+    virtual void didFail(const ResourceError&);
+
+    String stringResult();
+    PassRefPtr<ArrayBuffer> arrayBufferResult() const;
+    unsigned bytesLoaded() const { return m_bytesLoaded; }
+    unsigned totalBytes() const { return m_totalBytes; }
+    int errorCode() const { return m_errorCode; }
+
+    void setEncoding(const String&);
+    void setDataType(const String& dataType) { m_dataType = dataType; }
+    
+private:
+    void terminate();
+    void cleanup();
+    void failed(int errorCode);
+    void convertToText();
+    void convertToDataURL();
+
+    bool isCompleted() const;
+
+    static FileError::ErrorCode httpStatusCodeToErrorCode(int);
+
+    ReadType m_readType;
+    FileReaderLoaderClient* m_client;
+    TextEncoding m_encoding;
+    String m_dataType;
+
+    KURL m_urlForReading;
+    RefPtr<ThreadableLoader> m_loader;
+
+    RefPtr<ArrayBuffer> m_rawData;
+    bool m_isRawDataConverted;
+
+    String m_stringResult;
+
+    // The decoder used to decode the text data.
+    RefPtr<TextResourceDecoder> m_decoder;
+
+    unsigned m_bytesLoaded;
+    unsigned m_totalBytes;
+    int m_errorCode;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(BLOB)
+
+#endif // FileReaderLoader_h