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//===- llvm-cvtres.cpp - Serialize .res files into .obj ---------*- 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
//
//===----------------------------------------------------------------------===//
//
// Serialize .res files into .obj files. This is intended to be a
// platform-independent port of Microsoft's cvtres.exe.
//
//===----------------------------------------------------------------------===//
#include "llvm/BinaryFormat/Magic.h"
#include "llvm/Object/Binary.h"
#include "llvm/Object/WindowsMachineFlag.h"
#include "llvm/Object/WindowsResource.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/BinaryStreamError.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
#include <system_error>
using namespace llvm;
using namespace object;
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) \
static constexpr StringLiteral NAME##_init[] = VALUE; \
static constexpr ArrayRef<StringLiteral> NAME(NAME##_init, \
std::size(NAME##_init) - 1);
#include "Opts.inc"
#undef PREFIX
static constexpr 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::GenericOptTable {
public:
CvtResOptTable() : opt::GenericOptTable(InfoTable, true) {}
};
}
[[noreturn]] static void reportError(Twine Msg) {
errs() << Msg;
exit(1);
}
static void reportError(StringRef Input, std::error_code EC) {
reportError(Twine(Input) + ": " + EC.message() + ".\n");
}
static void error(StringRef Input, Error EC) {
if (!EC)
return;
handleAllErrors(std::move(EC), [&](const ErrorInfoBase &EI) {
reportError(Twine(Input) + ": " + EI.message() + ".\n");
});
}
static void error(Error EC) {
if (!EC)
return;
handleAllErrors(std::move(EC),
[&](const ErrorInfoBase &EI) { reportError(EI.message()); });
}
static uint32_t getTime() {
std::time_t Now = time(nullptr);
if (Now < 0 || !isUInt<32>(Now))
return UINT32_MAX;
return static_cast<uint32_t>(Now);
}
template <typename T> T error(Expected<T> EC) {
if (!EC)
error(EC.takeError());
return std::move(EC.get());
}
template <typename T> T error(StringRef Input, Expected<T> EC) {
if (!EC)
error(Input, EC.takeError());
return std::move(EC.get());
}
template <typename T> T error(StringRef Input, ErrorOr<T> &&EC) {
return error(Input, errorOrToExpected(std::move(EC)));
}
int main(int Argc, const char **Argv) {
InitLLVM X(Argc, Argv);
CvtResOptTable T;
unsigned MAI, MAC;
ArrayRef<const char *> ArgsArr = ArrayRef(Argv + 1, Argc - 1);
opt::InputArgList InputArgs = T.ParseArgs(ArgsArr, MAI, MAC);
if (InputArgs.hasArg(OPT_HELP)) {
T.printHelp(outs(), "llvm-cvtres [options] file...", "Resource Converter");
return 0;
}
bool Verbose = InputArgs.hasArg(OPT_VERBOSE);
COFF::MachineTypes MachineType;
if (opt::Arg *Arg = InputArgs.getLastArg(OPT_MACHINE)) {
MachineType = getMachineType(Arg->getValue());
if (MachineType == COFF::IMAGE_FILE_MACHINE_UNKNOWN) {
reportError(Twine("Unsupported machine architecture ") + Arg->getValue() +
"\n");
}
} else {
if (Verbose)
outs() << "Machine architecture not specified; assumed X64.\n";
MachineType = COFF::IMAGE_FILE_MACHINE_AMD64;
}
std::vector<std::string> InputFiles = InputArgs.getAllArgValues(OPT_INPUT);
if (InputFiles.size() == 0) {
reportError("No input file specified.\n");
}
SmallString<128> OutputFile;
if (opt::Arg *Arg = InputArgs.getLastArg(OPT_OUT)) {
OutputFile = Arg->getValue();
} else {
OutputFile = sys::path::filename(StringRef(InputFiles[0]));
sys::path::replace_extension(OutputFile, ".obj");
}
uint32_t DateTimeStamp;
if (llvm::opt::Arg *Arg = InputArgs.getLastArg(OPT_TIMESTAMP)) {
StringRef Value(Arg->getValue());
if (Value.getAsInteger(0, DateTimeStamp))
reportError(Twine("invalid timestamp: ") + Value +
". Expected 32-bit integer\n");
} else {
DateTimeStamp = getTime();
}
if (Verbose)
outs() << "Machine: " << machineToStr(MachineType) << '\n';
WindowsResourceParser Parser;
for (const auto &File : InputFiles) {
std::unique_ptr<MemoryBuffer> Buffer = error(
File, MemoryBuffer::getFileOrSTDIN(File, /*IsText=*/false,
/*RequiresNullTerminator=*/false));
file_magic Type = identify_magic(Buffer->getMemBufferRef().getBuffer());
if (Type != file_magic::windows_resource)
reportError(File + ": unrecognized file format.\n");
std::unique_ptr<WindowsResource> Binary = error(
File,
WindowsResource::createWindowsResource(Buffer->getMemBufferRef()));
WindowsResource *RF = Binary.get();
if (Verbose) {
int EntryNumber = 0;
ResourceEntryRef Entry = error(RF->getHeadEntry());
bool End = false;
while (!End) {
error(Entry.moveNext(End));
EntryNumber++;
}
outs() << "Number of resources: " << EntryNumber << "\n";
}
std::vector<std::string> Duplicates;
error(Parser.parse(RF, Duplicates));
for (const auto& DupeDiag : Duplicates)
reportError(DupeDiag);
}
if (Verbose) {
Parser.printTree(outs());
}
std::unique_ptr<MemoryBuffer> OutputBuffer =
error(llvm::object::writeWindowsResourceCOFF(MachineType, Parser,
DateTimeStamp));
auto 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());
if (Verbose) {
std::unique_ptr<MemoryBuffer> Buffer =
error(OutputFile,
MemoryBuffer::getFileOrSTDIN(OutputFile, /*IsText=*/false,
/*RequiresNullTerminator=*/false));
ScopedPrinter W(errs());
W.printBinaryBlock("Output File Raw Data",
Buffer->getMemBufferRef().getBuffer());
}
return 0;
}
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