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authorSteve Block <steveblock@google.com>2011-05-06 11:45:16 +0100
committerSteve Block <steveblock@google.com>2011-05-12 13:44:10 +0100
commitcad810f21b803229eb11403f9209855525a25d57 (patch)
tree29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /WebCore/fileapi/FileReaderLoader.cpp
parent121b0cf4517156d0ac5111caf9830c51b69bae8f (diff)
downloadexternal_webkit-cad810f21b803229eb11403f9209855525a25d57.zip
external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz
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Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'WebCore/fileapi/FileReaderLoader.cpp')
-rw-r--r--WebCore/fileapi/FileReaderLoader.cpp323
1 files changed, 0 insertions, 323 deletions
diff --git a/WebCore/fileapi/FileReaderLoader.cpp b/WebCore/fileapi/FileReaderLoader.cpp
deleted file mode 100644
index 24904e2..0000000
--- a/WebCore/fileapi/FileReaderLoader.cpp
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * 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.
- */
-
-#include "config.h"
-
-#if ENABLE(BLOB)
-
-#include "FileReaderLoader.h"
-
-#include "ArrayBuffer.h"
-#include "Base64.h"
-#include "Blob.h"
-#include "BlobURL.h"
-#include "FileReaderLoaderClient.h"
-#include "ResourceRequest.h"
-#include "ResourceResponse.h"
-#include "ScriptExecutionContext.h"
-#include "TextResourceDecoder.h"
-#include "ThreadableBlobRegistry.h"
-#include "ThreadableLoader.h"
-#include <wtf/PassRefPtr.h>
-#include <wtf/RefPtr.h>
-#include <wtf/Vector.h>
-#include <wtf/text/StringBuilder.h>
-
-using namespace std;
-
-namespace WebCore {
-
-FileReaderLoader::FileReaderLoader(ReadType readType, FileReaderLoaderClient* client)
- : m_readType(readType)
- , m_client(client)
- , m_isRawDataConverted(false)
- , m_stringResult("")
- , m_bytesLoaded(0)
- , m_totalBytes(0)
- , m_errorCode(0)
-{
-}
-
-FileReaderLoader::~FileReaderLoader()
-{
- terminate();
- ThreadableBlobRegistry::unregisterBlobURL(m_urlForReading);
-}
-
-void FileReaderLoader::start(ScriptExecutionContext* scriptExecutionContext, Blob* blob)
-{
- // The blob is read by routing through the request handling layer given a temporary public url.
- m_urlForReading = BlobURL::createPublicURL(scriptExecutionContext->securityOrigin());
- ThreadableBlobRegistry::registerBlobURL(m_urlForReading, blob->url());
-
- // Construct and load the request.
- ResourceRequest request(m_urlForReading);
- request.setHTTPMethod("GET");
-
- ThreadableLoaderOptions options;
- options.sendLoadCallbacks = true;
- options.sniffContent = false;
- options.forcePreflight = false;
- options.allowCredentials = true;
- options.crossOriginRequestPolicy = DenyCrossOriginRequests;
-
- if (m_client)
- m_loader = ThreadableLoader::create(scriptExecutionContext, this, request, options);
- else
- ThreadableLoader::loadResourceSynchronously(scriptExecutionContext, request, *this, options);
-}
-
-void FileReaderLoader::cancel()
-{
- m_errorCode = FileError::ABORT_ERR;
- terminate();
-}
-
-void FileReaderLoader::terminate()
-{
- if (m_loader) {
- m_loader->cancel();
- cleanup();
- }
-}
-
-void FileReaderLoader::cleanup()
-{
- m_loader = 0;
-
- // If we get any error, we do not need to keep a buffer around.
- if (m_errorCode) {
- m_rawData = 0;
- m_stringResult = "";
- }
-}
-
-void FileReaderLoader::didReceiveResponse(const ResourceResponse& response)
-{
- if (response.httpStatusCode() != 200) {
- failed(httpStatusCodeToErrorCode(response.httpStatusCode()));
- return;
- }
-
- unsigned long long length = response.expectedContentLength();
-
- // Check that we can cast to unsigned since we have to do
- // so to call ArrayBuffer's create function.
- // FIXME: Support reading more than the current size limit of ArrayBuffer.
- if (length > numeric_limits<unsigned>::max()) {
- failed(FileError::NOT_READABLE_ERR);
- return;
- }
-
- ASSERT(!m_rawData);
- m_rawData = ArrayBuffer::create(static_cast<unsigned>(length), 1);
-
- if (!m_rawData) {
- failed(FileError::NOT_READABLE_ERR);
- return;
- }
-
- m_totalBytes = static_cast<unsigned>(length);
-
- if (m_client)
- m_client->didStartLoading();
-}
-
-void FileReaderLoader::didReceiveData(const char* data, int lengthReceived)
-{
- ASSERT(data);
- ASSERT(lengthReceived > 0);
-
- // Bail out if we already encountered an error.
- if (m_errorCode)
- return;
-
- int length = lengthReceived;
- unsigned remainingBufferSpace = m_totalBytes - m_bytesLoaded;
- if (length > static_cast<long long>(remainingBufferSpace))
- length = static_cast<int>(remainingBufferSpace);
-
- if (length <= 0)
- return;
-
- memcpy(static_cast<char*>(m_rawData->data()) + m_bytesLoaded, data, length);
- m_bytesLoaded += length;
-
- m_isRawDataConverted = false;
-
- if (m_client)
- m_client->didReceiveData();
-}
-
-void FileReaderLoader::didFinishLoading(unsigned long)
-{
- cleanup();
- if (m_client)
- m_client->didFinishLoading();
-}
-
-void FileReaderLoader::didFail(const ResourceError&)
-{
- // If we're aborting, do not proceed with normal error handling since it is covered in aborting code.
- if (m_errorCode == FileError::ABORT_ERR)
- return;
-
- failed(FileError::NOT_READABLE_ERR);
-}
-
-void FileReaderLoader::failed(int errorCode)
-{
- m_errorCode = errorCode;
- cleanup();
- if (m_client)
- m_client->didFail(m_errorCode);
-}
-
-FileError::ErrorCode FileReaderLoader::httpStatusCodeToErrorCode(int httpStatusCode)
-{
- switch (httpStatusCode) {
- case 403:
- return FileError::SECURITY_ERR;
- case 404:
- return FileError::NOT_FOUND_ERR;
- default:
- return FileError::NOT_READABLE_ERR;
- }
-}
-
-PassRefPtr<ArrayBuffer> FileReaderLoader::arrayBufferResult() const
-{
- ASSERT(m_readType == ReadAsArrayBuffer);
-
- // If the loading is not started or an error occurs, return an empty result.
- if (!m_rawData || m_errorCode)
- return 0;
-
- // If completed, we can simply return our buffer.
- if (isCompleted())
- return m_rawData;
-
- // Otherwise, return a copy.
- return ArrayBuffer::create(m_rawData.get());
-}
-
-String FileReaderLoader::stringResult()
-{
- ASSERT(m_readType != ReadAsArrayBuffer);
-
- // If the loading is not started or an error occurs, return an empty result.
- if (!m_rawData || m_errorCode)
- return m_stringResult;
-
- // If already converted from the raw data, return the result now.
- if (m_isRawDataConverted)
- return m_stringResult;
-
- switch (m_readType) {
- case ReadAsArrayBuffer:
- // No conversion is needed.
- break;
- case ReadAsBinaryString:
- m_stringResult = String(static_cast<const char*>(m_rawData->data()), m_bytesLoaded);
- break;
- case ReadAsText:
- convertToText();
- break;
- case ReadAsDataURL:
- // Partial data is not supported when reading as data URL.
- if (isCompleted())
- convertToDataURL();
- break;
- default:
- ASSERT_NOT_REACHED();
- }
-
- return m_stringResult;
-}
-
-void FileReaderLoader::convertToText()
-{
- if (!m_bytesLoaded)
- return;
-
- // Decode the data.
- // The File API spec says that we should use the supplied encoding if it is valid. However, we choose to ignore this
- // requirement in order to be consistent with how WebKit decodes the web content: always has the BOM override the
- // provided encoding.
- // FIXME: consider supporting incremental decoding to improve the perf.
- StringBuilder builder;
- if (!m_decoder)
- m_decoder = TextResourceDecoder::create("text/plain", m_encoding.isValid() ? m_encoding : UTF8Encoding());
- builder.append(m_decoder->decode(static_cast<const char*>(m_rawData->data()), m_bytesLoaded));
-
- if (isCompleted())
- builder.append(m_decoder->flush());
-
- m_stringResult = builder.toString();
-}
-
-void FileReaderLoader::convertToDataURL()
-{
- StringBuilder builder;
- builder.append("data:");
-
- if (!m_bytesLoaded) {
- m_stringResult = builder.toString();
- return;
- }
-
- if (!m_dataType.isEmpty()) {
- builder.append(m_dataType);
- builder.append(";base64,");
- } else
- builder.append("base64,");
-
- Vector<char> out;
- base64Encode(static_cast<const char*>(m_rawData->data()), m_bytesLoaded, out);
- out.append('\0');
- builder.append(out.data());
-
- m_stringResult = builder.toString();
-}
-
-bool FileReaderLoader::isCompleted() const
-{
- return m_bytesLoaded == m_totalBytes;
-}
-
-void FileReaderLoader::setEncoding(const String& encoding)
-{
- if (!encoding.isEmpty())
- m_encoding = TextEncoding(encoding);
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(BLOB)