1 //===- FileUtilities.cpp - utilities for working with files ---------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Definitions of common utilities for working with files.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "mlir/Support/FileUtilities.h"
14 #include "mlir/Support/LLVM.h"
15 #include "llvm/Support/Alignment.h"
16 #include "llvm/Support/FileUtilities.h"
17 #include "llvm/Support/MemoryBuffer.h"
18 #include "llvm/Support/ToolOutputFile.h"
19
20 using namespace mlir;
21
22 static std::unique_ptr<llvm::MemoryBuffer>
openInputFileImpl(StringRef inputFilename,std::string * errorMessage,std::optional<llvm::Align> alignment)23 openInputFileImpl(StringRef inputFilename, std::string *errorMessage,
24 std::optional<llvm::Align> alignment) {
25 auto fileOrErr = llvm::MemoryBuffer::getFileOrSTDIN(
26 inputFilename, /*IsText=*/false, /*RequiresNullTerminator=*/true,
27 alignment);
28 if (std::error_code error = fileOrErr.getError()) {
29 if (errorMessage)
30 *errorMessage = "cannot open input file '" + inputFilename.str() +
31 "': " + error.message();
32 return nullptr;
33 }
34
35 return std::move(*fileOrErr);
36 }
37 std::unique_ptr<llvm::MemoryBuffer>
openInputFile(StringRef inputFilename,std::string * errorMessage)38 mlir::openInputFile(StringRef inputFilename, std::string *errorMessage) {
39 return openInputFileImpl(inputFilename, errorMessage,
40 /*alignment=*/std::nullopt);
41 }
42 std::unique_ptr<llvm::MemoryBuffer>
openInputFile(llvm::StringRef inputFilename,llvm::Align alignment,std::string * errorMessage)43 mlir::openInputFile(llvm::StringRef inputFilename, llvm::Align alignment,
44 std::string *errorMessage) {
45 return openInputFileImpl(inputFilename, errorMessage, alignment);
46 }
47
48 std::unique_ptr<llvm::ToolOutputFile>
openOutputFile(StringRef outputFilename,std::string * errorMessage)49 mlir::openOutputFile(StringRef outputFilename, std::string *errorMessage) {
50 std::error_code error;
51 auto result = std::make_unique<llvm::ToolOutputFile>(outputFilename, error,
52 llvm::sys::fs::OF_None);
53 if (error) {
54 if (errorMessage)
55 *errorMessage = "cannot open output file '" + outputFilename.str() +
56 "': " + error.message();
57 return nullptr;
58 }
59
60 return result;
61 }
62