file_reader.cc | Explore in Territory

/*
 * 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
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "third_party/blink/renderer/core/fileapi/file_reader.h"

#include "base/auto_reset.h"
#include "base/timer/elapsed_timer.h"
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_union_arraybuffer_string.h"
#include "third_party/blink/renderer/core/event_target_names.h"
#include "third_party/blink/renderer/core/events/progress_event.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/fileapi/file.h"
#include "third_party/blink/renderer/core/fileapi/file_error.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/probe/core_probes.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/supplementable.h"
#include "third_party/blink/renderer/platform/wtf/deque.h"
#include "third_party/blink/renderer/platform/wtf/hash_set.h"

namespace blink {

namespace {

const std::string Utf8BlobUUID(Blob* blob) { … }

const std::string Utf8FilePath(Blob* blob) { … }

}  // namespace

// Embedders like chromium limit the number of simultaneous requests to avoid
// excessive IPC congestion. We limit this to 100 per thread to throttle the
// requests (the value is arbitrarily chosen).
static const size_t kMaxOutstandingRequestsPerThread = …;
static const base::TimeDelta kProgressNotificationInterval = …;

class FileReader::ThrottlingController final
    : public GarbageCollected<FileReader::ThrottlingController>,
      public Supplement<ExecutionContext> { … };

// static
const char FileReader::ThrottlingController::kSupplementName[] = …;

FileReader* FileReader::Create(ExecutionContext* context) { … }

FileReader::FileReader(ExecutionContext* context)
    : … { … }

FileReader::~FileReader() = default;

const AtomicString& FileReader::InterfaceName() const { … }

void FileReader::ContextDestroyed() { … }

bool FileReader::HasPendingActivity() const { … }

void FileReader::readAsArrayBuffer(Blob* blob,
                                   ExceptionState& exception_state) { … }

void FileReader::readAsBinaryString(Blob* blob,
                                    ExceptionState& exception_state) { … }

void FileReader::readAsText(Blob* blob,
                            const String& encoding,
                            ExceptionState& exception_state) { … }

void FileReader::readAsText(Blob* blob, ExceptionState& exception_state) { … }

void FileReader::readAsDataURL(Blob* blob, ExceptionState& exception_state) { … }

void FileReader::ReadInternal(Blob* blob,
                              FileReadType type,
                              ExceptionState& exception_state) { … }

void FileReader::ExecutePendingRead() { … }

void FileReader::abort() { … }

V8UnionArrayBufferOrString* FileReader::result() const { … }

void FileReader::Terminate() { … }

FileErrorCode FileReader::DidStartLoading() { … }

FileErrorCode FileReader::DidReceiveData() { … }

void FileReader::DidFinishLoading(FileReaderData contents) { … }

void FileReader::DidFail(FileErrorCode error_code) { … }

void FileReader::FireEvent(const AtomicString& type) { … }

void FileReader::Trace(Visitor* visitor) const { … }

}  // namespace blink
chromium/third_party/blink/renderer/core/fileapi/file_reader.cc
