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