1/* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "config.h" 32#include "core/fileapi/FileReaderSync.h" 33 34#include "bindings/v8/ExceptionState.h" 35#include "core/dom/ExceptionCode.h" 36#include "core/fileapi/Blob.h" 37#include "core/fileapi/FileError.h" 38#include "core/fileapi/FileReaderLoader.h" 39#include "wtf/ArrayBuffer.h" 40#include "wtf/PassRefPtr.h" 41 42namespace WebCore { 43 44FileReaderSync::FileReaderSync() 45{ 46 ScriptWrappable::init(this); 47} 48 49PassRefPtr<ArrayBuffer> FileReaderSync::readAsArrayBuffer(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionState& es) 50{ 51 if (!blob) { 52 es.throwDOMException(NotFoundError, FileError::notFoundErrorMessage); 53 return 0; 54 } 55 56 FileReaderLoader loader(FileReaderLoader::ReadAsArrayBuffer, 0); 57 startLoading(scriptExecutionContext, loader, *blob, es); 58 59 return loader.arrayBufferResult(); 60} 61 62String FileReaderSync::readAsBinaryString(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionState& es) 63{ 64 if (!blob) { 65 es.throwDOMException(NotFoundError, FileError::notFoundErrorMessage); 66 return String(); 67 } 68 69 FileReaderLoader loader(FileReaderLoader::ReadAsBinaryString, 0); 70 startLoading(scriptExecutionContext, loader, *blob, es); 71 return loader.stringResult(); 72} 73 74String FileReaderSync::readAsText(ScriptExecutionContext* scriptExecutionContext, Blob* blob, const String& encoding, ExceptionState& es) 75{ 76 if (!blob) { 77 es.throwDOMException(NotFoundError, FileError::notFoundErrorMessage); 78 return String(); 79 } 80 81 FileReaderLoader loader(FileReaderLoader::ReadAsText, 0); 82 loader.setEncoding(encoding); 83 startLoading(scriptExecutionContext, loader, *blob, es); 84 return loader.stringResult(); 85} 86 87String FileReaderSync::readAsDataURL(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ExceptionState& es) 88{ 89 if (!blob) { 90 es.throwDOMException(NotFoundError, FileError::notFoundErrorMessage); 91 return String(); 92 } 93 94 FileReaderLoader loader(FileReaderLoader::ReadAsDataURL, 0); 95 loader.setDataType(blob->type()); 96 startLoading(scriptExecutionContext, loader, *blob, es); 97 return loader.stringResult(); 98} 99 100void FileReaderSync::startLoading(ScriptExecutionContext* scriptExecutionContext, FileReaderLoader& loader, const Blob& blob, ExceptionState& es) 101{ 102 loader.start(scriptExecutionContext, blob); 103 if (loader.errorCode()) 104 FileError::throwDOMException(es, loader.errorCode()); 105} 106 107} // namespace WebCore 108