llvm-project/llvm/tools/llvm-rc/llvm-rc.cpp

180 lines
5.4 KiB
C++

//===-- llvm-rc.cpp - Compile .rc scripts into .res -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Compile .rc scripts into .res files. This is intended to be a
// platform-independent port of Microsoft's rc.exe tool.
//
//===----------------------------------------------------------------------===//
#include "ResourceFileWriter.h"
#include "ResourceScriptParser.h"
#include "ResourceScriptStmt.h"
#include "ResourceScriptToken.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
#include <system_error>
using namespace llvm;
using namespace llvm::rc;
namespace {
// Input options tables.
enum ID {
OPT_INVALID = 0, // This is not a correct 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 RcOptTable : public opt::OptTable {
public:
RcOptTable() : OptTable(InfoTable, /* IgnoreCase = */ true) {}
};
static ExitOnError ExitOnErr;
LLVM_ATTRIBUTE_NORETURN static void fatalError(Twine Message) {
errs() << Message << "\n";
exit(1);
}
} // anonymous namespace
int main(int argc_, const char *argv_[]) {
sys::PrintStackTraceOnErrorSignal(argv_[0]);
PrettyStackTraceProgram X(argc_, argv_);
ExitOnErr.setBanner("llvm-rc: ");
SmallVector<const char *, 256> argv;
SpecificBumpPtrAllocator<char> ArgAllocator;
ExitOnErr(errorCodeToError(sys::Process::GetArgumentVector(
argv, makeArrayRef(argv_, argc_), ArgAllocator)));
llvm_shutdown_obj Y;
RcOptTable T;
unsigned MAI, MAC;
ArrayRef<const char *> ArgsArr = makeArrayRef(argv_ + 1, argc_);
opt::InputArgList InputArgs = T.ParseArgs(ArgsArr, MAI, MAC);
// The tool prints nothing when invoked with no command-line arguments.
if (InputArgs.hasArg(OPT_HELP)) {
T.PrintHelp(outs(), "rc", "Resource Converter", false);
return 0;
}
const bool BeVerbose = InputArgs.hasArg(OPT_VERBOSE);
std::vector<std::string> InArgsInfo = InputArgs.getAllArgValues(OPT_INPUT);
if (InArgsInfo.size() != 1) {
fatalError("Exactly one input file should be provided.");
}
// Read and tokenize the input file.
const Twine &Filename = InArgsInfo[0];
ErrorOr<std::unique_ptr<MemoryBuffer>> File = MemoryBuffer::getFile(Filename);
if (!File) {
fatalError("Error opening file '" + Filename +
"': " + File.getError().message());
}
std::unique_ptr<MemoryBuffer> FileContents = std::move(*File);
StringRef Contents = FileContents->getBuffer();
std::vector<RCToken> Tokens = ExitOnErr(tokenizeRC(Contents));
if (BeVerbose) {
const Twine TokenNames[] = {
#define TOKEN(Name) #Name,
#define SHORT_TOKEN(Name, Ch) #Name,
#include "ResourceScriptTokenList.h"
#undef TOKEN
#undef SHORT_TOKEN
};
for (const RCToken &Token : Tokens) {
outs() << TokenNames[static_cast<int>(Token.kind())] << ": "
<< Token.value();
if (Token.kind() == RCToken::Kind::Int)
outs() << "; int value = " << Token.intValue();
outs() << "\n";
}
}
std::unique_ptr<ResourceFileWriter> Visitor;
bool IsDryRun = InputArgs.hasArg(OPT_DRY_RUN);
if (!IsDryRun) {
auto OutArgsInfo = InputArgs.getAllArgValues(OPT_FILEOUT);
if (OutArgsInfo.size() != 1)
fatalError(
"Exactly one output file should be provided (using /FO flag).");
std::error_code EC;
auto FOut =
llvm::make_unique<raw_fd_ostream>(OutArgsInfo[0], EC, sys::fs::F_RW);
if (EC)
fatalError("Error opening output file '" + OutArgsInfo[0] +
"': " + EC.message());
Visitor = llvm::make_unique<ResourceFileWriter>(std::move(FOut));
Visitor->AppendNull = InputArgs.hasArg(OPT_ADD_NULL);
ExitOnErr(NullResource().visit(Visitor.get()));
// Set the default language; choose en-US arbitrarily.
ExitOnErr(LanguageResource(0x09, 0x01).visit(Visitor.get()));
}
rc::RCParser Parser{std::move(Tokens)};
while (!Parser.isEof()) {
auto Resource = ExitOnErr(Parser.parseSingleResource());
if (BeVerbose)
Resource->log(outs());
if (!IsDryRun)
ExitOnErr(Resource->visit(Visitor.get()));
}
// STRINGTABLE resources come at the very end.
if (!IsDryRun)
ExitOnErr(Visitor->dumpAllStringTables());
return 0;
}