| 1 | //===--- ToolOutputFile.cpp - Implement the ToolOutputFile class --------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This implements the ToolOutputFile class. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #include "llvm/Support/ToolOutputFile.h" |
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| 14 | #include "llvm/Support/FileSystem.h" |
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| 15 | #include "llvm/Support/Signals.h" |
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| 16 | using namespace llvm; |
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| 17 | |
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| 18 | static bool isStdout(StringRef Filename) { return Filename == "-" ; } |
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| 19 | |
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| 20 | ToolOutputFile::CleanupInstaller::CleanupInstaller(StringRef Filename) |
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| 21 | : Filename(std::string(Filename)), Keep(false) { |
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| 22 | // Arrange for the file to be deleted if the process is killed. |
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| 23 | if (!isStdout(Filename)) |
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| 24 | sys::RemoveFileOnSignal(Filename); |
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| 25 | } |
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| 26 | |
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| 27 | ToolOutputFile::CleanupInstaller::~CleanupInstaller() { |
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| 28 | if (isStdout(Filename)) |
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| 29 | return; |
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| 30 | |
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| 31 | // Delete the file if the client hasn't told us not to. |
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| 32 | if (!Keep) |
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| 33 | sys::fs::remove(path: Filename); |
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| 34 | |
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| 35 | // Ok, the file is successfully written and closed, or deleted. There's no |
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| 36 | // further need to clean it up on signals. |
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| 37 | sys::DontRemoveFileOnSignal(Filename); |
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| 38 | } |
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| 39 | |
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| 40 | ToolOutputFile::ToolOutputFile(StringRef Filename, std::error_code &EC, |
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| 41 | sys::fs::OpenFlags Flags) |
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| 42 | : Installer(Filename) { |
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| 43 | if (isStdout(Filename)) { |
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| 44 | OS = &outs(); |
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| 45 | EC = std::error_code(); |
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| 46 | return; |
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| 47 | } |
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| 48 | OSHolder.emplace(args&: Filename, args&: EC, args&: Flags); |
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| 49 | OS = &*OSHolder; |
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| 50 | // If open fails, no cleanup is needed. |
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| 51 | if (EC) |
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| 52 | Installer.Keep = true; |
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| 53 | } |
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| 54 | |
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| 55 | ToolOutputFile::ToolOutputFile(StringRef Filename, int FD) |
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| 56 | : Installer(Filename) { |
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| 57 | OSHolder.emplace(args&: FD, args: true); |
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| 58 | OS = &*OSHolder; |
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| 59 | } |
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| 60 | |
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