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llvm-mirror/tools/llvm-mt/llvm-mt.cpp
Chandler Carruth ae65e281f3 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

160 lines
4.9 KiB
C++

//===- llvm-mt.cpp - Merge .manifest files ---------------------*- C++ -*-===//
//
// 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
//
//===---------------------------------------------------------------------===//
//
// Merge .manifest files. This is intended to be a platform-independent port
// of Microsoft's mt.exe.
//
//===---------------------------------------------------------------------===//
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileOutputBuffer.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/WithColor.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/WindowsManifest/WindowsManifestMerger.h"
#include <system_error>
using namespace llvm;
namespace {
enum ID {
OPT_INVALID = 0, // This is not an option ID.
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
HELPTEXT, METAVAR, VALUES) \
OPT_##ID,
#include "Opts.inc"
#undef OPTION
};
#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
#include "Opts.inc"
#undef PREFIX
static const opt::OptTable::Info InfoTable[] = {
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
HELPTEXT, METAVAR, VALUES) \
{ \
PREFIX, NAME, HELPTEXT, \
METAVAR, OPT_##ID, opt::Option::KIND##Class, \
PARAM, FLAGS, OPT_##GROUP, \
OPT_##ALIAS, ALIASARGS, VALUES},
#include "Opts.inc"
#undef OPTION
};
class CvtResOptTable : public opt::OptTable {
public:
CvtResOptTable() : OptTable(InfoTable, true) {}
};
} // namespace
LLVM_ATTRIBUTE_NORETURN void reportError(Twine Msg) {
WithColor::error(errs(), "llvm-mt") << Msg << '\n';
exit(1);
}
static void reportError(StringRef Input, std::error_code EC) {
reportError(Twine(Input) + ": " + EC.message());
}
void error(std::error_code EC) {
if (EC)
reportError(EC.message());
}
void error(Error EC) {
if (EC)
handleAllErrors(std::move(EC), [&](const ErrorInfoBase &EI) {
reportError(EI.message());
});
}
int main(int Argc, const char **Argv) {
InitLLVM X(Argc, Argv);
CvtResOptTable T;
unsigned MAI, MAC;
ArrayRef<const char *> ArgsArr = makeArrayRef(Argv + 1, Argc - 1);
opt::InputArgList InputArgs = T.ParseArgs(ArgsArr, MAI, MAC);
for (auto *Arg : InputArgs.filtered(OPT_INPUT)) {
auto ArgString = Arg->getAsString(InputArgs);
std::string Diag;
raw_string_ostream OS(Diag);
OS << "invalid option '" << ArgString << "'";
std::string Nearest;
if (T.findNearest(ArgString, Nearest) < 2)
OS << ", did you mean '" << Nearest << "'?";
reportError(OS.str());
}
for (auto &Arg : InputArgs) {
if (Arg->getOption().matches(OPT_unsupported)) {
outs() << "llvm-mt: ignoring unsupported '" << Arg->getOption().getName()
<< "' option\n";
}
}
if (InputArgs.hasArg(OPT_help)) {
T.PrintHelp(outs(), "llvm-mt [options] file...", "Manifest Tool", false);
return 0;
}
std::vector<std::string> InputFiles = InputArgs.getAllArgValues(OPT_manifest);
if (InputFiles.size() == 0) {
reportError("no input file specified");
}
StringRef OutputFile;
if (InputArgs.hasArg(OPT_out)) {
OutputFile = InputArgs.getLastArgValue(OPT_out);
} else if (InputFiles.size() == 1) {
OutputFile = InputFiles[0];
} else {
reportError("no output file specified");
}
windows_manifest::WindowsManifestMerger Merger;
for (const auto &File : InputFiles) {
ErrorOr<std::unique_ptr<MemoryBuffer>> ManifestOrErr =
MemoryBuffer::getFile(File);
if (!ManifestOrErr)
reportError(File, ManifestOrErr.getError());
MemoryBuffer &Manifest = *ManifestOrErr.get();
error(Merger.merge(Manifest));
}
std::unique_ptr<MemoryBuffer> OutputBuffer = Merger.getMergedManifest();
if (!OutputBuffer)
reportError("empty manifest not written");
Expected<std::unique_ptr<FileOutputBuffer>> FileOrErr =
FileOutputBuffer::create(OutputFile, OutputBuffer->getBufferSize());
if (!FileOrErr)
reportError(OutputFile, errorToErrorCode(FileOrErr.takeError()));
std::unique_ptr<FileOutputBuffer> FileBuffer = std::move(*FileOrErr);
std::copy(OutputBuffer->getBufferStart(), OutputBuffer->getBufferEnd(),
FileBuffer->getBufferStart());
error(FileBuffer->commit());
return 0;
}