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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/devtools/FileDescriptorOutputStream.h"
#include "private/pprio.h"
namespace mozilla {
namespace devtools {
/* static */
already_AddRefed<FileDescriptorOutputStream> FileDescriptorOutputStream::Create(
const ipc::FileDescriptor& fileDescriptor) {
if (NS_WARN_IF(!fileDescriptor.IsValid())) return nullptr;
auto rawFD = fileDescriptor.ClonePlatformHandle();
PRFileDesc* prfd = PR_ImportFile(PROsfd(rawFD.release()));
if (NS_WARN_IF(!prfd)) return nullptr;
RefPtr<FileDescriptorOutputStream> stream =
new FileDescriptorOutputStream(prfd);
return stream.forget();
}
NS_IMPL_ISUPPORTS(FileDescriptorOutputStream, nsIOutputStream);
NS_IMETHODIMP
FileDescriptorOutputStream::Close() {
// Repeatedly closing is idempotent.
if (!fd) return NS_OK;
if (PR_Close(fd) != PR_SUCCESS) return NS_ERROR_FAILURE;
fd = nullptr;
return NS_OK;
}
NS_IMETHODIMP
FileDescriptorOutputStream::StreamStatus() {
return fd ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
FileDescriptorOutputStream::Write(const char* buf, uint32_t count,
uint32_t* retval) {
if (NS_WARN_IF(!fd)) return NS_ERROR_FAILURE;
auto written = PR_Write(fd, buf, count);
if (written < 0) return NS_ERROR_FAILURE;
*retval = written;
return NS_OK;
}
NS_IMETHODIMP
FileDescriptorOutputStream::Flush() {
if (NS_WARN_IF(!fd)) return NS_ERROR_FAILURE;
return PR_Sync(fd) == PR_SUCCESS ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
FileDescriptorOutputStream::WriteFrom(nsIInputStream* fromStream,
uint32_t count, uint32_t* retval) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
FileDescriptorOutputStream::WriteSegments(nsReadSegmentFun reader,
void* closure, uint32_t count,
uint32_t* retval) {
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
FileDescriptorOutputStream::IsNonBlocking(bool* retval) {
*retval = false;
return NS_OK;
}
} // namespace devtools
} // namespace mozilla
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