Import chromium-64.0.3282.119

net/base/upload_bytes_element_reader.cc

@@ -0,0 +1,74 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/base/upload_bytes_element_reader.h"
+
+#include "base/logging.h"
+#include "net/base/io_buffer.h"
+#include "net/base/net_errors.h"
+
+namespace net {
+
+UploadBytesElementReader::UploadBytesElementReader(const char* bytes,
+                                                   uint64_t length)
+    : bytes_(bytes), length_(length), offset_(0) {
+}
+
+UploadBytesElementReader::~UploadBytesElementReader() = default;
+
+const UploadBytesElementReader*
+UploadBytesElementReader::AsBytesReader() const {
+  return this;
+}
+
+int UploadBytesElementReader::Init(const CompletionCallback& callback) {
+  offset_ = 0;
+  return OK;
+}
+
+uint64_t UploadBytesElementReader::GetContentLength() const {
+  return length_;
+}
+
+uint64_t UploadBytesElementReader::BytesRemaining() const {
+  return length_ - offset_;
+}
+
+bool UploadBytesElementReader::IsInMemory() const {
+  return true;
+}
+
+int UploadBytesElementReader::Read(IOBuffer* buf,
+                                   int buf_length,
+                                   const CompletionCallback& callback) {
+  DCHECK_LT(0, buf_length);
+
+  const int num_bytes_to_read = static_cast<int>(
+      std::min(BytesRemaining(), static_cast<uint64_t>(buf_length)));
+
+  // Check if we have anything to copy first, because we are getting
+  // the address of an element in |bytes_| and that will throw an
+  // exception if |bytes_| is an empty vector.
+  if (num_bytes_to_read > 0)
+    memcpy(buf->data(), bytes_ + offset_, num_bytes_to_read);
+
+  offset_ += num_bytes_to_read;
+  return num_bytes_to_read;
+}
+
+UploadOwnedBytesElementReader::UploadOwnedBytesElementReader(
+    std::vector<char>* data)
+    : UploadBytesElementReader(data->data(), data->size()) {
+  data_.swap(*data);
+}
+
+UploadOwnedBytesElementReader::~UploadOwnedBytesElementReader() = default;
+
+UploadOwnedBytesElementReader*
+UploadOwnedBytesElementReader::CreateWithString(const std::string& string) {
+  std::vector<char> data(string.begin(), string.end());
+  return new UploadOwnedBytesElementReader(&data);
+}
+
+}  // namespace net