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//===--- ToolOutputFile.cpp - Implement the ToolOutputFile class --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This implements the ToolOutputFile class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Signals.h"
using namespace llvm;
static bool isStdout(StringRef Filename) { return Filename == "-"; }
ToolOutputFile::CleanupInstaller::CleanupInstaller(StringRef Filename)
: Filename(std::string(Filename)), Keep(false) {
// Arrange for the file to be deleted if the process is killed.
if (!isStdout(Filename))
sys::RemoveFileOnSignal(Filename);
}
ToolOutputFile::CleanupInstaller::~CleanupInstaller() {
if (isStdout(Filename))
return;
// Delete the file if the client hasn't told us not to.
if (!Keep)
sys::fs::remove(Filename);
// Ok, the file is successfully written and closed, or deleted. There's no
// further need to clean it up on signals.
sys::DontRemoveFileOnSignal(Filename);
}
ToolOutputFile::ToolOutputFile(StringRef Filename, std::error_code &EC,
sys::fs::OpenFlags Flags)
: Installer(Filename) {
if (isStdout(Filename)) {
OS = &outs();
EC = std::error_code();
return;
}
OSHolder.emplace(Filename, EC, Flags);
OS = &*OSHolder;
// If open fails, no cleanup is needed.
if (EC)
Installer.Keep = true;
}
ToolOutputFile::ToolOutputFile(StringRef Filename, int FD)
: Installer(Filename) {
OSHolder.emplace(FD, true);
OS = &*OSHolder;
}
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