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// 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/net_errors.h"
namespace net {
UploadBytesElementReader::UploadBytesElementReader(const char* bytes,
int bytes_length)
: bytes_(bytes),
bytes_length_(bytes_length),
offset_(0) {
}
UploadBytesElementReader::~UploadBytesElementReader() {
}
int UploadBytesElementReader::Init(const CompletionCallback& callback) {
return OK;
}
int UploadBytesElementReader::InitSync() {
return OK;
}
uint64 UploadBytesElementReader::GetContentLength() const {
return bytes_length_;
}
uint64 UploadBytesElementReader::BytesRemaining() const {
return bytes_length_ - offset_;
}
int UploadBytesElementReader::ReadSync(char* buf, int buf_length) {
DCHECK_LT(0, buf_length);
const size_t num_bytes_to_read =
std::min(BytesRemaining(), static_cast<uint64>(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, bytes_ + offset_, num_bytes_to_read);
offset_ += num_bytes_to_read;
return num_bytes_to_read;
}
bool UploadBytesElementReader::IsInMemory() const {
return true;
}
} // namespace net
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