X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FSupport%2FCommandLine.cpp;h=d1ec4b005bf3788720dabb6dc674ecda08feb1e8;hb=507329912aa343b8a430a97cf2d8f92eecb6dc01;hp=61b6cfe929e10d0e1354548336704d0448f16f0d;hpb=1908aea3a64fa89a907317849cbff73789cdb89a;p=oota-llvm.git diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp index 61b6cfe929e..d1ec4b005bf 100644 --- a/lib/Support/CommandLine.cpp +++ b/lib/Support/CommandLine.cpp @@ -17,13 +17,14 @@ //===----------------------------------------------------------------------===// #include "llvm/Support/CommandLine.h" +#include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/ManagedStatic.h" #include "llvm/Support/raw_ostream.h" -#include "llvm/Target/TargetRegistry.h" -#include "llvm/System/Host.h" -#include "llvm/System/Path.h" +#include "llvm/Support/system_error.h" +#include "llvm/Support/Host.h" +#include "llvm/Support/Path.h" #include "llvm/ADT/OwningPtr.h" #include "llvm/ADT/SmallPtrSet.h" #include "llvm/ADT/SmallString.h" @@ -38,10 +39,12 @@ using namespace cl; //===----------------------------------------------------------------------===// // Template instantiations and anchors. // +namespace llvm { namespace cl { TEMPLATE_INSTANTIATION(class basic_parser); TEMPLATE_INSTANTIATION(class basic_parser); TEMPLATE_INSTANTIATION(class basic_parser); TEMPLATE_INSTANTIATION(class basic_parser); +TEMPLATE_INSTANTIATION(class basic_parser); TEMPLATE_INSTANTIATION(class basic_parser); TEMPLATE_INSTANTIATION(class basic_parser); TEMPLATE_INSTANTIATION(class basic_parser); @@ -52,13 +55,18 @@ TEMPLATE_INSTANTIATION(class opt); TEMPLATE_INSTANTIATION(class opt); TEMPLATE_INSTANTIATION(class opt); TEMPLATE_INSTANTIATION(class opt); +} } // end namespace llvm::cl +void GenericOptionValue::anchor() {} +void OptionValue::anchor() {} +void OptionValue::anchor() {} void Option::anchor() {} void basic_parser_impl::anchor() {} void parser::anchor() {} void parser::anchor() {} void parser::anchor() {} void parser::anchor() {} +void parser::anchor() {} void parser::anchor() {} void parser::anchor() {} void parser::anchor() {} @@ -155,9 +163,9 @@ static Option *LookupOption(StringRef &Arg, StringRef &Value, const StringMap &OptionsMap) { // Reject all dashes. if (Arg.empty()) return 0; - + size_t EqualPos = Arg.find('='); - + // If we have an equals sign, remember the value. if (EqualPos == StringRef::npos) { // Look up the option. @@ -170,20 +178,96 @@ static Option *LookupOption(StringRef &Arg, StringRef &Value, StringMap::const_iterator I = OptionsMap.find(Arg.substr(0, EqualPos)); if (I == OptionsMap.end()) return 0; - + Value = Arg.substr(EqualPos+1); Arg = Arg.substr(0, EqualPos); return I->second; } +/// LookupNearestOption - Lookup the closest match to the option specified by +/// the specified option on the command line. If there is a value specified +/// (after an equal sign) return that as well. This assumes that leading dashes +/// have already been stripped. +static Option *LookupNearestOption(StringRef Arg, + const StringMap &OptionsMap, + std::string &NearestString) { + // Reject all dashes. + if (Arg.empty()) return 0; + + // Split on any equal sign. + std::pair SplitArg = Arg.split('='); + StringRef &LHS = SplitArg.first; // LHS == Arg when no '=' is present. + StringRef &RHS = SplitArg.second; + + // Find the closest match. + Option *Best = 0; + unsigned BestDistance = 0; + for (StringMap::const_iterator it = OptionsMap.begin(), + ie = OptionsMap.end(); it != ie; ++it) { + Option *O = it->second; + SmallVector OptionNames; + O->getExtraOptionNames(OptionNames); + if (O->ArgStr[0]) + OptionNames.push_back(O->ArgStr); + + bool PermitValue = O->getValueExpectedFlag() != cl::ValueDisallowed; + StringRef Flag = PermitValue ? LHS : Arg; + for (size_t i = 0, e = OptionNames.size(); i != e; ++i) { + StringRef Name = OptionNames[i]; + unsigned Distance = StringRef(Name).edit_distance( + Flag, /*AllowReplacements=*/true, /*MaxEditDistance=*/BestDistance); + if (!Best || Distance < BestDistance) { + Best = O; + BestDistance = Distance; + if (RHS.empty() || !PermitValue) + NearestString = OptionNames[i]; + else + NearestString = std::string(OptionNames[i]) + "=" + RHS.str(); + } + } + } + + return Best; +} + +/// CommaSeparateAndAddOccurence - A wrapper around Handler->addOccurence() that +/// does special handling of cl::CommaSeparated options. +static bool CommaSeparateAndAddOccurence(Option *Handler, unsigned pos, + StringRef ArgName, + StringRef Value, bool MultiArg = false) +{ + // Check to see if this option accepts a comma separated list of values. If + // it does, we have to split up the value into multiple values. + if (Handler->getMiscFlags() & CommaSeparated) { + StringRef Val(Value); + StringRef::size_type Pos = Val.find(','); + + while (Pos != StringRef::npos) { + // Process the portion before the comma. + if (Handler->addOccurrence(pos, ArgName, Val.substr(0, Pos), MultiArg)) + return true; + // Erase the portion before the comma, AND the comma. + Val = Val.substr(Pos+1); + Value.substr(Pos+1); // Increment the original value pointer as well. + // Check for another comma. + Pos = Val.find(','); + } + + Value = Val; + } + if (Handler->addOccurrence(pos, ArgName, Value, MultiArg)) + return true; + + return false; +} /// ProvideOption - For Value, this differentiates between an empty value ("") /// and a null value (StringRef()). The later is accepted for arguments that /// don't allow a value (-foo) the former is rejected (-foo=). static inline bool ProvideOption(Option *Handler, StringRef ArgName, - StringRef Value, int argc, char **argv, - int &i) { + StringRef Value, int argc, + const char *const *argv, int &i) { // Is this a multi-argument option? unsigned NumAdditionalVals = Handler->getNumAdditionalVals(); @@ -208,23 +292,17 @@ static inline bool ProvideOption(Option *Handler, StringRef ArgName, break; case ValueOptional: break; - - default: - errs() << ProgramName - << ": Bad ValueMask flag! CommandLine usage error:" - << Handler->getValueExpectedFlag() << "\n"; - llvm_unreachable(0); } // If this isn't a multi-arg option, just run the handler. if (NumAdditionalVals == 0) - return Handler->addOccurrence(i, ArgName, Value); + return CommaSeparateAndAddOccurence(Handler, i, ArgName, Value); // If it is, run the handle several times. bool MultiArg = false; if (Value.data()) { - if (Handler->addOccurrence(i, ArgName, Value, MultiArg)) + if (CommaSeparateAndAddOccurence(Handler, i, ArgName, Value, MultiArg)) return true; --NumAdditionalVals; MultiArg = true; @@ -234,8 +312,8 @@ static inline bool ProvideOption(Option *Handler, StringRef ArgName, if (i+1 >= argc) return Handler->error("not enough values!"); Value = argv[++i]; - - if (Handler->addOccurrence(i, ArgName, Value, MultiArg)) + + if (CommaSeparateAndAddOccurence(Handler, i, ArgName, Value, MultiArg)) return true; MultiArg = true; --NumAdditionalVals; @@ -297,7 +375,7 @@ static Option *HandlePrefixedOrGroupedOption(StringRef &Arg, StringRef &Value, size_t Length = 0; Option *PGOpt = getOptionPred(Arg, Length, isPrefixedOrGrouping, OptionsMap); if (PGOpt == 0) return 0; - + // If the option is a prefixed option, then the value is simply the // rest of the name... so fall through to later processing, by // setting up the argument name flags and value fields. @@ -307,28 +385,28 @@ static Option *HandlePrefixedOrGroupedOption(StringRef &Arg, StringRef &Value, assert(OptionsMap.count(Arg) && OptionsMap.find(Arg)->second == PGOpt); return PGOpt; } - + // This must be a grouped option... handle them now. Grouping options can't // have values. assert(isGrouping(PGOpt) && "Broken getOptionPred!"); - + do { // Move current arg name out of Arg into OneArgName. StringRef OneArgName = Arg.substr(0, Length); Arg = Arg.substr(Length); - + // Because ValueRequired is an invalid flag for grouped arguments, // we don't need to pass argc/argv in. assert(PGOpt->getValueExpectedFlag() != cl::ValueRequired && "Option can not be cl::Grouping AND cl::ValueRequired!"); - int Dummy; + int Dummy = 0; ErrorParsing |= ProvideOption(PGOpt, OneArgName, StringRef(), 0, 0, Dummy); - + // Get the next grouping option. PGOpt = getOptionPred(Arg, Length, isGrouping, OptionsMap); } while (PGOpt && Length != Arg.size()); - + // Return the last option with Arg cut down to just the last one. return PGOpt; } @@ -365,16 +443,18 @@ static void ParseCStringVector(std::vector &OutputVector, WorkStr = WorkStr.substr(Pos); continue; } - + // Find position of first delimiter. size_t Pos = WorkStr.find_first_of(Delims); if (Pos == StringRef::npos) Pos = WorkStr.size(); - + // Everything from 0 to Pos is the next word to copy. char *NewStr = (char*)malloc(Pos+1); memcpy(NewStr, WorkStr.data(), Pos); NewStr[Pos] = 0; OutputVector.push_back(NewStr); + + WorkStr = WorkStr.substr(Pos); } } @@ -415,10 +495,10 @@ void cl::ParseEnvironmentOptions(const char *progName, const char *envVar, /// ExpandResponseFiles - Copy the contents of argv into newArgv, /// substituting the contents of the response files for the arguments /// of type @file. -static void ExpandResponseFiles(unsigned argc, char** argv, +static void ExpandResponseFiles(unsigned argc, const char*const* argv, std::vector& newArgv) { for (unsigned i = 1; i != argc; ++i) { - char *arg = argv[i]; + const char *arg = argv[i]; if (arg[0] == '@') { sys::PathWithStatus respFile(++arg); @@ -428,10 +508,6 @@ static void ExpandResponseFiles(unsigned argc, char** argv, const sys::FileStatus *FileStat = respFile.getFileStatus(); if (FileStat && FileStat->getSize() != 0) { - // Mmap the response file into memory. - OwningPtr - respFilePtr(MemoryBuffer::getFile(respFile.c_str())); - // If we could open the file, parse its contents, otherwise // pass the @file option verbatim. @@ -440,7 +516,9 @@ static void ExpandResponseFiles(unsigned argc, char** argv, // itself contain additional @file options; any such options will be // processed recursively.") - if (respFilePtr != 0) { + // Mmap the response file into memory. + OwningPtr respFilePtr; + if (!MemoryBuffer::getFile(respFile.c_str(), respFilePtr)) { ParseCStringVector(newArgv, respFilePtr->getBufferStart()); continue; } @@ -450,7 +528,7 @@ static void ExpandResponseFiles(unsigned argc, char** argv, } } -void cl::ParseCommandLineOptions(int argc, char **argv, +void cl::ParseCommandLineOptions(int argc, const char * const *argv, const char *Overview, bool ReadResponseFiles) { // Process all registered options. SmallVector PositionalOpts; @@ -471,9 +549,10 @@ void cl::ParseCommandLineOptions(int argc, char **argv, } // Copy the program name into ProgName, making sure not to overflow it. - std::string ProgName = sys::Path(argv[0]).getLast(); - if (ProgName.size() > 79) ProgName.resize(79); - strcpy(ProgramName, ProgName.c_str()); + std::string ProgName = sys::path::filename(argv[0]); + size_t Len = std::min(ProgName.size(), size_t(79)); + memcpy(ProgramName, ProgName.data(), Len); + ProgramName[Len] = '\0'; ProgramOverview = Overview; bool ErrorParsing = false; @@ -536,6 +615,8 @@ void cl::ParseCommandLineOptions(int argc, char **argv, bool DashDashFound = false; // Have we read '--'? for (int i = 1; i < argc; ++i) { Option *Handler = 0; + Option *NearestHandler = 0; + std::string NearestHandlerString; StringRef Value; StringRef ArgName = ""; @@ -560,7 +641,7 @@ void cl::ParseCommandLineOptions(int argc, char **argv, ProvidePositionalOption(ActivePositionalArg, argv[i], i); continue; // We are done! } - + if (!PositionalOpts.empty()) { PositionalVals.push_back(std::make_pair(argv[i],i)); @@ -590,7 +671,7 @@ void cl::ParseCommandLineOptions(int argc, char **argv, // Eat leading dashes. while (!ArgName.empty() && ArgName[0] == '-') ArgName = ArgName.substr(1); - + Handler = LookupOption(ArgName, Value, Opts); if (!Handler || Handler->getFormattingFlag() != cl::Positional) { ProvidePositionalOption(ActivePositionalArg, argv[i], i); @@ -602,19 +683,32 @@ void cl::ParseCommandLineOptions(int argc, char **argv, // Eat leading dashes. while (!ArgName.empty() && ArgName[0] == '-') ArgName = ArgName.substr(1); - + Handler = LookupOption(ArgName, Value, Opts); // Check to see if this "option" is really a prefixed or grouped argument. if (Handler == 0) Handler = HandlePrefixedOrGroupedOption(ArgName, Value, ErrorParsing, Opts); + + // Otherwise, look for the closest available option to report to the user + // in the upcoming error. + if (Handler == 0 && SinkOpts.empty()) + NearestHandler = LookupNearestOption(ArgName, Opts, + NearestHandlerString); } if (Handler == 0) { if (SinkOpts.empty()) { errs() << ProgramName << ": Unknown command line argument '" - << argv[i] << "'. Try: '" << argv[0] << " --help'\n"; + << argv[i] << "'. Try: '" << argv[0] << " -help'\n"; + + if (NearestHandler) { + // If we know a near match, report it as well. + errs() << ProgramName << ": Did you mean '-" + << NearestHandlerString << "'?\n"; + } + ErrorParsing = true; } else { for (SmallVectorImpl::iterator I = SinkOpts.begin(), @@ -624,25 +718,6 @@ void cl::ParseCommandLineOptions(int argc, char **argv, continue; } - // Check to see if this option accepts a comma separated list of values. If - // it does, we have to split up the value into multiple values. - if (Handler->getMiscFlags() & CommaSeparated) { - StringRef Val(Value); - StringRef::size_type Pos = Val.find(','); - - while (Pos != StringRef::npos) { - // Process the portion before the comma. - ErrorParsing |= ProvideOption(Handler, ArgName, Val.substr(0, Pos), - argc, argv, i); - // Erase the portion before the comma, AND the comma. - Val = Val.substr(Pos+1); - Value.substr(Pos+1); // Increment the original value pointer as well. - - // Check for another comma. - Pos = Val.find(','); - } - } - // If this is a named positional argument, just remember that it is the // active one... if (Handler->getFormattingFlag() == cl::Positional) @@ -656,15 +731,15 @@ void cl::ParseCommandLineOptions(int argc, char **argv, errs() << ProgramName << ": Not enough positional command line arguments specified!\n" << "Must specify at least " << NumPositionalRequired - << " positional arguments: See: " << argv[0] << " --help\n"; + << " positional arguments: See: " << argv[0] << " -help\n"; ErrorParsing = true; - } else if (!HasUnlimitedPositionals - && PositionalVals.size() > PositionalOpts.size()) { + } else if (!HasUnlimitedPositionals && + PositionalVals.size() > PositionalOpts.size()) { errs() << ProgramName << ": Too many positional arguments specified!\n" << "Can specify at most " << PositionalOpts.size() - << " positional arguments: See: " << argv[0] << " --help\n"; + << " positional arguments: See: " << argv[0] << " -help\n"; ErrorParsing = true; } else if (ConsumeAfterOpt == 0) { @@ -748,6 +823,15 @@ void cl::ParseCommandLineOptions(int argc, char **argv, } } + // Now that we know if -debug is specified, we can use it. + // Note that if ReadResponseFiles == true, this must be done before the + // memory allocated for the expanded command line is free()d below. + DEBUG(dbgs() << "Args: "; + for (int i = 0; i < argc; ++i) + dbgs() << argv[i] << ' '; + dbgs() << '\n'; + ); + // Free all of the memory allocated to the map. Command line options may only // be processed once! Opts.clear(); @@ -759,7 +843,7 @@ void cl::ParseCommandLineOptions(int argc, char **argv, // Free all the strdup()ed strings. for (std::vector::iterator i = newArgv.begin(), e = newArgv.end(); i != e; ++i) - free (*i); + free(*i); } // If we had an error processing our arguments, don't let the program execute @@ -798,7 +882,6 @@ bool Option::addOccurrence(unsigned pos, StringRef ArgName, case OneOrMore: case ZeroOrMore: case ConsumeAfter: break; - default: return error("bad num occurrences flag value!"); } return handleOccurrence(pos, ArgName, Value); @@ -825,12 +908,10 @@ size_t alias::getOptionWidth() const { // Print out the option for the alias. void alias::printOptionInfo(size_t GlobalWidth) const { size_t L = std::strlen(ArgStr); - errs() << " -" << ArgStr; - errs().indent(GlobalWidth-L-6) << " - " << HelpStr << "\n"; + outs() << " -" << ArgStr; + outs().indent(GlobalWidth-L-6) << " - " << HelpStr << "\n"; } - - //===----------------------------------------------------------------------===// // Parser Implementation code... // @@ -860,7 +941,11 @@ void basic_parser_impl::printOptionInfo(const Option &O, outs().indent(GlobalWidth-getOptionWidth(O)) << " - " << O.HelpStr << '\n'; } - +void basic_parser_impl::printOptionName(const Option &O, + size_t GlobalWidth) const { + outs() << " -" << O.ArgStr; + outs().indent(GlobalWidth-std::strlen(O.ArgStr)); +} // parser implementation @@ -872,7 +957,7 @@ bool parser::parse(Option &O, StringRef ArgName, Value = true; return false; } - + if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") { Value = false; return false; @@ -894,7 +979,7 @@ bool parser::parse(Option &O, StringRef ArgName, Value = BOU_FALSE; return false; } - + return O.error("'" + Arg + "' is invalid value for boolean argument! Try 0 or 1"); } @@ -918,6 +1003,16 @@ bool parser::parse(Option &O, StringRef ArgName, return false; } +// parser implementation +// +bool parser::parse(Option &O, StringRef ArgName, + StringRef Arg, unsigned long long &Value){ + + if (Arg.getAsInteger(0, Value)) + return O.error("'" + Arg + "' value invalid for uint argument!"); + return false; +} + // parser/parser implementation // static bool parseDouble(Option &O, StringRef Arg, double &Value) { @@ -1004,17 +1099,130 @@ void generic_parser_base::printOptionInfo(const Option &O, } } +static const size_t MaxOptWidth = 8; // arbitrary spacing for printOptionDiff + +// printGenericOptionDiff - Print the value of this option and it's default. +// +// "Generic" options have each value mapped to a name. +void generic_parser_base:: +printGenericOptionDiff(const Option &O, const GenericOptionValue &Value, + const GenericOptionValue &Default, + size_t GlobalWidth) const { + outs() << " -" << O.ArgStr; + outs().indent(GlobalWidth-std::strlen(O.ArgStr)); + + unsigned NumOpts = getNumOptions(); + for (unsigned i = 0; i != NumOpts; ++i) { + if (Value.compare(getOptionValue(i))) + continue; + + outs() << "= " << getOption(i); + size_t L = std::strlen(getOption(i)); + size_t NumSpaces = MaxOptWidth > L ? MaxOptWidth - L : 0; + outs().indent(NumSpaces) << " (default: "; + for (unsigned j = 0; j != NumOpts; ++j) { + if (Default.compare(getOptionValue(j))) + continue; + outs() << getOption(j); + break; + } + outs() << ")\n"; + return; + } + outs() << "= *unknown option value*\n"; +} + +// printOptionDiff - Specializations for printing basic value types. +// +#define PRINT_OPT_DIFF(T) \ + void parser:: \ + printOptionDiff(const Option &O, T V, OptionValue D, \ + size_t GlobalWidth) const { \ + printOptionName(O, GlobalWidth); \ + std::string Str; \ + { \ + raw_string_ostream SS(Str); \ + SS << V; \ + } \ + outs() << "= " << Str; \ + size_t NumSpaces = MaxOptWidth > Str.size() ? MaxOptWidth - Str.size() : 0;\ + outs().indent(NumSpaces) << " (default: "; \ + if (D.hasValue()) \ + outs() << D.getValue(); \ + else \ + outs() << "*no default*"; \ + outs() << ")\n"; \ + } \ + +PRINT_OPT_DIFF(bool) +PRINT_OPT_DIFF(boolOrDefault) +PRINT_OPT_DIFF(int) +PRINT_OPT_DIFF(unsigned) +PRINT_OPT_DIFF(unsigned long long) +PRINT_OPT_DIFF(double) +PRINT_OPT_DIFF(float) +PRINT_OPT_DIFF(char) + +void parser:: +printOptionDiff(const Option &O, StringRef V, OptionValue D, + size_t GlobalWidth) const { + printOptionName(O, GlobalWidth); + outs() << "= " << V; + size_t NumSpaces = MaxOptWidth > V.size() ? MaxOptWidth - V.size() : 0; + outs().indent(NumSpaces) << " (default: "; + if (D.hasValue()) + outs() << D.getValue(); + else + outs() << "*no default*"; + outs() << ")\n"; +} + +// Print a placeholder for options that don't yet support printOptionDiff(). +void basic_parser_impl:: +printOptionNoValue(const Option &O, size_t GlobalWidth) const { + printOptionName(O, GlobalWidth); + outs() << "= *cannot print option value*\n"; +} //===----------------------------------------------------------------------===// -// --help and --help-hidden option implementation +// -help and -help-hidden option implementation // static int OptNameCompare(const void *LHS, const void *RHS) { typedef std::pair pair_ty; - + return strcmp(((pair_ty*)LHS)->first, ((pair_ty*)RHS)->first); } +// Copy Options into a vector so we can sort them as we like. +static void +sortOpts(StringMap &OptMap, + SmallVectorImpl< std::pair > &Opts, + bool ShowHidden) { + SmallPtrSet OptionSet; // Duplicate option detection. + + for (StringMap::iterator I = OptMap.begin(), E = OptMap.end(); + I != E; ++I) { + // Ignore really-hidden options. + if (I->second->getOptionHiddenFlag() == ReallyHidden) + continue; + + // Unless showhidden is set, ignore hidden flags. + if (I->second->getOptionHiddenFlag() == Hidden && !ShowHidden) + continue; + + // If we've already seen this option, don't add it to the list again. + if (!OptionSet.insert(I->second)) + continue; + + Opts.push_back(std::pair(I->getKey().data(), + I->second)); + } + + // Sort the options list alphabetically. + qsort(Opts.data(), Opts.size(), sizeof(Opts[0]), OptNameCompare); +} + namespace { class HelpPrinter { @@ -1036,30 +1244,8 @@ public: StringMap OptMap; GetOptionInfo(PositionalOpts, SinkOpts, OptMap); - // Copy Options into a vector so we can sort them as we like. SmallVector, 128> Opts; - SmallPtrSet OptionSet; // Duplicate option detection. - - for (StringMap::iterator I = OptMap.begin(), E = OptMap.end(); - I != E; ++I) { - // Ignore really-hidden options. - if (I->second->getOptionHiddenFlag() == ReallyHidden) - continue; - - // Unless showhidden is set, ignore hidden flags. - if (I->second->getOptionHiddenFlag() == Hidden && !ShowHidden) - continue; - - // If we've already seen this option, don't add it to the list again. - if (!OptionSet.insert(I->second)) - continue; - - Opts.push_back(std::pair(I->getKey().data(), - I->second)); - } - - // Sort the options list alphabetically. - qsort(Opts.data(), Opts.size(), sizeof(Opts[0]), OptNameCompare); + sortOpts(OptMap, Opts, ShowHidden); if (ProgramOverview) outs() << "OVERVIEW: " << ProgramOverview << "\n"; @@ -1111,26 +1297,55 @@ static HelpPrinter NormalPrinter(false); static HelpPrinter HiddenPrinter(true); static cl::opt > -HOp("help", cl::desc("Display available options (--help-hidden for more)"), +HOp("help", cl::desc("Display available options (-help-hidden for more)"), cl::location(NormalPrinter), cl::ValueDisallowed); static cl::opt > HHOp("help-hidden", cl::desc("Display all available options"), cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed); -static void (*OverrideVersionPrinter)() = 0; +static cl::opt +PrintOptions("print-options", + cl::desc("Print non-default options after command line parsing"), + cl::Hidden, cl::init(false)); + +static cl::opt +PrintAllOptions("print-all-options", + cl::desc("Print all option values after command line parsing"), + cl::Hidden, cl::init(false)); + +// Print the value of each option. +void cl::PrintOptionValues() { + if (!PrintOptions && !PrintAllOptions) return; + + // Get all the options. + SmallVector PositionalOpts; + SmallVector SinkOpts; + StringMap OptMap; + GetOptionInfo(PositionalOpts, SinkOpts, OptMap); -static int TargetArraySortFn(const void *LHS, const void *RHS) { - typedef std::pair pair_ty; - return strcmp(((const pair_ty*)LHS)->first, ((const pair_ty*)RHS)->first); + SmallVector, 128> Opts; + sortOpts(OptMap, Opts, /*ShowHidden*/true); + + // Compute the maximum argument length... + size_t MaxArgLen = 0; + for (size_t i = 0, e = Opts.size(); i != e; ++i) + MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth()); + + for (size_t i = 0, e = Opts.size(); i != e; ++i) + Opts[i].second->printOptionValue(MaxArgLen, PrintAllOptions); } +static void (*OverrideVersionPrinter)() = 0; + +static std::vector* ExtraVersionPrinters = 0; + namespace { class VersionPrinter { public: void print() { raw_ostream &OS = outs(); - OS << "Low Level Virtual Machine (http://llvm.org/):\n" + OS << "LLVM (http://llvm.org/):\n" << " " << PACKAGE_NAME << " version " << PACKAGE_VERSION; #ifdef LLVM_VERSION_INFO OS << LLVM_VERSION_INFO; @@ -1144,39 +1359,34 @@ public: #ifndef NDEBUG OS << " with assertions"; #endif + std::string CPU = sys::getHostCPUName(); + if (CPU == "generic") CPU = "(unknown)"; OS << ".\n" +#if (ENABLE_TIMESTAMPS == 1) << " Built " << __DATE__ << " (" << __TIME__ << ").\n" - << " Host: " << sys::getHostTriple() << '\n' - << '\n' - << " Registered Targets:\n"; - - std::vector > Targets; - size_t Width = 0; - for (TargetRegistry::iterator it = TargetRegistry::begin(), - ie = TargetRegistry::end(); it != ie; ++it) { - Targets.push_back(std::make_pair(it->getName(), &*it)); - Width = std::max(Width, strlen(Targets.back().first)); - } - if (!Targets.empty()) - qsort(&Targets[0], Targets.size(), sizeof(Targets[0]), - TargetArraySortFn); - - for (unsigned i = 0, e = Targets.size(); i != e; ++i) { - OS << " " << Targets[i].first; - OS.indent(Width - strlen(Targets[i].first)) << " - " - << Targets[i].second->getShortDescription() << '\n'; - } - if (Targets.empty()) - OS << " (none)\n"; +#endif + << " Default target: " << sys::getDefaultTargetTriple() << '\n' + << " Host CPU: " << CPU << '\n'; } void operator=(bool OptionWasSpecified) { if (!OptionWasSpecified) return; - - if (OverrideVersionPrinter == 0) { - print(); + + if (OverrideVersionPrinter != 0) { + (*OverrideVersionPrinter)(); exit(1); } - (*OverrideVersionPrinter)(); + print(); + + // Iterate over any registered extra printers and call them to add further + // information. + if (ExtraVersionPrinters != 0) { + outs() << '\n'; + for (std::vector::iterator I = ExtraVersionPrinters->begin(), + E = ExtraVersionPrinters->end(); + I != E; ++I) + (*I)(); + } + exit(1); } }; @@ -1196,8 +1406,8 @@ void cl::PrintHelpMessage() { // NormalPrinter variable is a HelpPrinter and the help gets printed when // its operator= is invoked. That's because the "normal" usages of the // help printer is to be assigned true/false depending on whether the - // --help option was given or not. Since we're circumventing that we have - // to make it look like --help was given, so we assign true. + // -help option was given or not. Since we're circumventing that we have + // to make it look like -help was given, so we assign true. NormalPrinter = true; } @@ -1209,3 +1419,10 @@ void cl::PrintVersionMessage() { void cl::SetVersionPrinter(void (*func)()) { OverrideVersionPrinter = func; } + +void cl::AddExtraVersionPrinter(void (*func)()) { + if (ExtraVersionPrinters == 0) + ExtraVersionPrinters = new std::vector; + + ExtraVersionPrinters->push_back(func); +}