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//===-- llvm-ranlib.cpp - LLVM archive index generator --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Adds or updates an index (symbol table) for an LLVM archive file.
//
//===----------------------------------------------------------------------===//
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/Bitcode/Archive.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Signals.h"
#include <memory>
using namespace llvm;
// llvm-ar operation code and modifier flags
static cl::opt<std::string>
ArchiveName(cl::Positional, cl::Optional, cl::desc("<archive-file>"));
static cl::opt<bool>
Verbose("verbose",cl::Optional,cl::init(false),
cl::desc("Print the symbol table"));
// printSymbolTable - print out the archive's symbol table.
void printSymbolTable(Archive* TheArchive) {
outs() << "\nArchive Symbol Table:\n";
const Archive::SymTabType& symtab = TheArchive->getSymbolTable();
for (Archive::SymTabType::const_iterator I=symtab.begin(), E=symtab.end();
I != E; ++I ) {
unsigned offset = TheArchive->getFirstFileOffset() + I->second;
outs() << " " << format("%9u", offset) << "\t" << I->first <<"\n";
}
}
int main(int argc, char **argv) {
// Print a stack trace if we signal out.
llvm::sys::PrintStackTraceOnErrorSignal();
llvm::PrettyStackTraceProgram X(argc, argv);
LLVMContext &Context = getGlobalContext();
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
// Have the command line options parsed and handle things
// like --help and --version.
cl::ParseCommandLineOptions(argc, argv,
"LLVM Archive Index Generator (llvm-ranlib)\n\n"
" This program adds or updates an index of bitcode symbols\n"
" to an LLVM archive file."
);
int exitCode = 0;
// Make sure we don't exit with "unhandled exception".
try {
// Check the path name of the archive
sys::Path ArchivePath;
if (!ArchivePath.set(ArchiveName))
throw std::string("Archive name invalid: ") + ArchiveName;
// Make sure it exists, we don't create empty archives
bool Exists;
if (llvm::sys::fs::exists(ArchivePath.str(), Exists) || !Exists)
throw std::string("Archive file does not exist");
std::string err_msg;
std::auto_ptr<Archive>
AutoArchive(Archive::OpenAndLoad(ArchivePath, Context, &err_msg));
Archive* TheArchive = AutoArchive.get();
if (!TheArchive)
throw err_msg;
if (TheArchive->writeToDisk(true, false, &err_msg ))
throw err_msg;
if (Verbose)
printSymbolTable(TheArchive);
} catch (const char* msg) {
errs() << argv[0] << ": " << msg << "\n\n";
exitCode = 1;
} catch (const std::string& msg) {
errs() << argv[0] << ": " << msg << "\n";
exitCode = 2;
} catch (...) {
errs() << argv[0] << ": An unexpected unknown exception occurred.\n";
exitCode = 3;
}
return exitCode;
}
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