87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/* -*- 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::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
|