| /* |
| * 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 "core/fileapi/FileReaderSync.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "core/dom/ExecutionContext.h" |
| #include "core/fileapi/Blob.h" |
| #include "core/fileapi/FileError.h" |
| #include "core/fileapi/FileReaderLoader.h" |
| #include "core/typed_arrays/DOMArrayBuffer.h" |
| #include "platform/Histogram.h" |
| #include "platform/bindings/ScriptState.h" |
| |
| namespace blink { |
| |
| namespace { |
| // These values are written to logs. New enum values can be added, but existing |
| // enums must never be renumbered or deleted and reused. |
| enum class WorkerType { |
| OTHER = 0, |
| DEDICATED_WORKER = 1, |
| SHARED_WORKER = 2, |
| SERVICE_WORKER = 3, |
| MAX |
| }; |
| } // namespace |
| |
| FileReaderSync::FileReaderSync(ExecutionContext* context) { |
| WorkerType type = WorkerType::OTHER; |
| if (context->IsDedicatedWorkerGlobalScope()) |
| type = WorkerType::DEDICATED_WORKER; |
| else if (context->IsSharedWorkerGlobalScope()) |
| type = WorkerType::SHARED_WORKER; |
| else if (context->IsServiceWorkerGlobalScope()) |
| type = WorkerType::SERVICE_WORKER; |
| DEFINE_THREAD_SAFE_STATIC_LOCAL( |
| EnumerationHistogram, worker_type_histogram, |
| ("FileReaderSync.WorkerType", static_cast<int>(WorkerType::MAX))); |
| worker_type_histogram.Count(static_cast<int>(type)); |
| } |
| |
| DOMArrayBuffer* FileReaderSync::readAsArrayBuffer( |
| ScriptState* script_state, |
| Blob* blob, |
| ExceptionState& exception_state) { |
| DCHECK(blob); |
| |
| std::unique_ptr<FileReaderLoader> loader = |
| FileReaderLoader::Create(FileReaderLoader::kReadAsArrayBuffer, nullptr); |
| StartLoading(ExecutionContext::From(script_state), *loader, *blob, |
| exception_state); |
| |
| return loader->ArrayBufferResult(); |
| } |
| |
| String FileReaderSync::readAsBinaryString(ScriptState* script_state, |
| Blob* blob, |
| ExceptionState& exception_state) { |
| DCHECK(blob); |
| |
| std::unique_ptr<FileReaderLoader> loader = |
| FileReaderLoader::Create(FileReaderLoader::kReadAsBinaryString, nullptr); |
| StartLoading(ExecutionContext::From(script_state), *loader, *blob, |
| exception_state); |
| return loader->StringResult(); |
| } |
| |
| String FileReaderSync::readAsText(ScriptState* script_state, |
| Blob* blob, |
| const String& encoding, |
| ExceptionState& exception_state) { |
| DCHECK(blob); |
| |
| std::unique_ptr<FileReaderLoader> loader = |
| FileReaderLoader::Create(FileReaderLoader::kReadAsText, nullptr); |
| loader->SetEncoding(encoding); |
| StartLoading(ExecutionContext::From(script_state), *loader, *blob, |
| exception_state); |
| return loader->StringResult(); |
| } |
| |
| String FileReaderSync::readAsDataURL(ScriptState* script_state, |
| Blob* blob, |
| ExceptionState& exception_state) { |
| DCHECK(blob); |
| |
| std::unique_ptr<FileReaderLoader> loader = |
| FileReaderLoader::Create(FileReaderLoader::kReadAsDataURL, nullptr); |
| loader->SetDataType(blob->type()); |
| StartLoading(ExecutionContext::From(script_state), *loader, *blob, |
| exception_state); |
| return loader->StringResult(); |
| } |
| |
| void FileReaderSync::StartLoading(ExecutionContext* execution_context, |
| FileReaderLoader& loader, |
| const Blob& blob, |
| ExceptionState& exception_state) { |
| loader.Start(execution_context, blob.GetBlobDataHandle()); |
| if (loader.GetErrorCode()) |
| FileError::ThrowDOMException(exception_state, loader.GetErrorCode()); |
| } |
| |
| } // namespace blink |