//===-- CommandLine.cpp - Command line parser implementation --------------===//
//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
// This class implements a command line argument processor that is useful when
// creating a tool. It provides a simple, minimalistic interface that is easily
// extensible and supports nonlocal (library) command line options.
//
//===----------------------------------------------------------------------===//
-#include "Support/CommandLine.h"
-#include "Support/STLExtras.h"
+#include "llvm/Config/config.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Streams.h"
+#include "llvm/System/Path.h"
#include <algorithm>
+#include <functional>
#include <map>
+#include <ostream>
#include <set>
-#include <iostream>
-
+#include <cstdlib>
+#include <cerrno>
+#include <cstring>
+#include <climits>
+using namespace llvm;
using namespace cl;
-using std::map;
-using std::pair;
-using std::vector;
-using std::string;
-using std::cerr;
//===----------------------------------------------------------------------===//
-// Basic, shared command line option processing machinery...
+// Template instantiations and anchors.
//
+TEMPLATE_INSTANTIATION(class basic_parser<bool>);
+TEMPLATE_INSTANTIATION(class basic_parser<boolOrDefault>);
+TEMPLATE_INSTANTIATION(class basic_parser<int>);
+TEMPLATE_INSTANTIATION(class basic_parser<unsigned>);
+TEMPLATE_INSTANTIATION(class basic_parser<double>);
+TEMPLATE_INSTANTIATION(class basic_parser<float>);
+TEMPLATE_INSTANTIATION(class basic_parser<std::string>);
+TEMPLATE_INSTANTIATION(class basic_parser<char>);
+
+TEMPLATE_INSTANTIATION(class opt<unsigned>);
+TEMPLATE_INSTANTIATION(class opt<int>);
+TEMPLATE_INSTANTIATION(class opt<std::string>);
+TEMPLATE_INSTANTIATION(class opt<char>);
+TEMPLATE_INSTANTIATION(class opt<bool>);
+
+void Option::anchor() {}
+void basic_parser_impl::anchor() {}
+void parser<bool>::anchor() {}
+void parser<boolOrDefault>::anchor() {}
+void parser<int>::anchor() {}
+void parser<unsigned>::anchor() {}
+void parser<double>::anchor() {}
+void parser<float>::anchor() {}
+void parser<std::string>::anchor() {}
+void parser<char>::anchor() {}
-// Return the global command line option vector. Making it a function scoped
-// static ensures that it will be initialized correctly before its first use.
-//
-static map<string, Option*> &getOpts() {
- static map<string,Option*> CommandLineOptions;
- return CommandLineOptions;
+//===----------------------------------------------------------------------===//
+
+// Globals for name and overview of program. Program name is not a string to
+// avoid static ctor/dtor issues.
+static char ProgramName[80] = "<premain>";
+static const char *ProgramOverview = 0;
+
+// This collects additional help to be printed.
+static ManagedStatic<std::vector<const char*> > MoreHelp;
+
+extrahelp::extrahelp(const char *Help)
+ : morehelp(Help) {
+ MoreHelp->push_back(Help);
}
-static vector<Option*> &getPositionalOpts() {
- static vector<Option*> Positional;
- return Positional;
+static bool OptionListChanged = false;
+
+// MarkOptionsChanged - Internal helper function.
+void cl::MarkOptionsChanged() {
+ OptionListChanged = true;
}
-static void AddArgument(const string &ArgName, Option *Opt) {
- if (getOpts().find(ArgName) != getOpts().end()) {
- cerr << "CommandLine Error: Argument '" << ArgName
- << "' defined more than once!\n";
- } else {
- // Add argument to the argument map!
- getOpts().insert(std::make_pair(ArgName, Opt));
+/// RegisteredOptionList - This is the list of the command line options that
+/// have statically constructed themselves.
+static Option *RegisteredOptionList = 0;
+
+void Option::addArgument() {
+ assert(NextRegistered == 0 && "argument multiply registered!");
+
+ NextRegistered = RegisteredOptionList;
+ RegisteredOptionList = this;
+ MarkOptionsChanged();
+}
+
+
+//===----------------------------------------------------------------------===//
+// Basic, shared command line option processing machinery.
+//
+
+/// GetOptionInfo - Scan the list of registered options, turning them into data
+/// structures that are easier to handle.
+static void GetOptionInfo(std::vector<Option*> &PositionalOpts,
+ std::vector<Option*> &SinkOpts,
+ std::map<std::string, Option*> &OptionsMap) {
+ std::vector<const char*> OptionNames;
+ Option *CAOpt = 0; // The ConsumeAfter option if it exists.
+ for (Option *O = RegisteredOptionList; O; O = O->getNextRegisteredOption()) {
+ // If this option wants to handle multiple option names, get the full set.
+ // This handles enum options like "-O1 -O2" etc.
+ O->getExtraOptionNames(OptionNames);
+ if (O->ArgStr[0])
+ OptionNames.push_back(O->ArgStr);
+
+ // Handle named options.
+ for (size_t i = 0, e = OptionNames.size(); i != e; ++i) {
+ // Add argument to the argument map!
+ if (!OptionsMap.insert(std::pair<std::string,Option*>(OptionNames[i],
+ O)).second) {
+ cerr << ProgramName << ": CommandLine Error: Argument '"
+ << OptionNames[i] << "' defined more than once!\n";
+ }
+ }
+
+ OptionNames.clear();
+
+ // Remember information about positional options.
+ if (O->getFormattingFlag() == cl::Positional)
+ PositionalOpts.push_back(O);
+ else if (O->getMiscFlags() & cl::Sink) // Remember sink options
+ SinkOpts.push_back(O);
+ else if (O->getNumOccurrencesFlag() == cl::ConsumeAfter) {
+ if (CAOpt)
+ O->error("Cannot specify more than one option with cl::ConsumeAfter!");
+ CAOpt = O;
+ }
}
+
+ if (CAOpt)
+ PositionalOpts.push_back(CAOpt);
+
+ // Make sure that they are in order of registration not backwards.
+ std::reverse(PositionalOpts.begin(), PositionalOpts.end());
}
-static const char *ProgramName = 0;
-static const char *ProgramOverview = 0;
+
+/// LookupOption - Lookup 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.
+static Option *LookupOption(const char *&Arg, const char *&Value,
+ std::map<std::string, Option*> &OptionsMap) {
+ while (*Arg == '-') ++Arg; // Eat leading dashes
+
+ const char *ArgEnd = Arg;
+ while (*ArgEnd && *ArgEnd != '=')
+ ++ArgEnd; // Scan till end of argument name.
+
+ if (*ArgEnd == '=') // If we have an equals sign...
+ Value = ArgEnd+1; // Get the value, not the equals
+
+
+ if (*Arg == 0) return 0;
+
+ // Look up the option.
+ std::map<std::string, Option*>::iterator I =
+ OptionsMap.find(std::string(Arg, ArgEnd));
+ return I != OptionsMap.end() ? I->second : 0;
+}
static inline bool ProvideOption(Option *Handler, const char *ArgName,
const char *Value, int argc, char **argv,
int &i) {
+ // Is this a multi-argument option?
+ unsigned NumAdditionalVals = Handler->getNumAdditionalVals();
+
// Enforce value requirements
switch (Handler->getValueExpectedFlag()) {
case ValueRequired:
- if (Value == 0 || *Value == 0) { // No value specified?
+ if (Value == 0) { // No value specified?
if (i+1 < argc) { // Steal the next argument, like for '-o filename'
Value = argv[++i];
} else {
}
break;
case ValueDisallowed:
- if (*Value != 0)
- return Handler->error(" does not allow a value! '" +
- string(Value) + "' specified.");
+ if (NumAdditionalVals > 0)
+ return Handler->error(": multi-valued option specified"
+ " with ValueDisallowed modifier!");
+
+ if (Value)
+ return Handler->error(" does not allow a value! '" +
+ std::string(Value) + "' specified.");
+ break;
+ case ValueOptional:
break;
- case ValueOptional: break;
- default: cerr << "Bad ValueMask flag! CommandLine usage error:"
- << Handler->getValueExpectedFlag() << "\n"; abort();
+ default:
+ cerr << ProgramName
+ << ": Bad ValueMask flag! CommandLine usage error:"
+ << Handler->getValueExpectedFlag() << "\n";
+ llvm_unreachable();
}
- // Run the handler now!
- return Handler->addOccurance(ArgName, Value);
+ // If this isn't a multi-arg option, just run the handler.
+ if (NumAdditionalVals == 0) {
+ return Handler->addOccurrence(i, ArgName, Value ? Value : "");
+ }
+ // If it is, run the handle several times.
+ else {
+ bool MultiArg = false;
+
+ if (Value) {
+ if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
+ return true;
+ --NumAdditionalVals;
+ MultiArg = true;
+ }
+
+ while (NumAdditionalVals > 0) {
+
+ if (i+1 < argc) {
+ Value = argv[++i];
+ } else {
+ return Handler->error(": not enough values!");
+ }
+ if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
+ return true;
+ MultiArg = true;
+ --NumAdditionalVals;
+ }
+ return false;
+ }
}
-static bool ProvidePositionalOption(Option *Handler, string &Arg) {
- int Dummy;
- return ProvideOption(Handler, "", Arg.c_str(), 0, 0, Dummy);
+static bool ProvidePositionalOption(Option *Handler, const std::string &Arg,
+ int i) {
+ int Dummy = i;
+ return ProvideOption(Handler, Handler->ArgStr, Arg.c_str(), 0, 0, Dummy);
}
// see if there options that satisfy the predicate. If we find one, return it,
// otherwise return null.
//
-static Option *getOptionPred(std::string Name, unsigned &Length,
- bool (*Pred)(const Option*)) {
-
- map<string, Option*>::iterator I = getOpts().find(Name);
- if (I != getOpts().end() && Pred(I->second)) {
+static Option *getOptionPred(std::string Name, size_t &Length,
+ bool (*Pred)(const Option*),
+ std::map<std::string, Option*> &OptionsMap) {
+
+ std::map<std::string, Option*>::iterator OMI = OptionsMap.find(Name);
+ if (OMI != OptionsMap.end() && Pred(OMI->second)) {
Length = Name.length();
- return I->second;
+ return OMI->second;
}
if (Name.size() == 1) return 0;
do {
Name.erase(Name.end()-1, Name.end()); // Chop off the last character...
- I = getOpts().find(Name);
+ OMI = OptionsMap.find(Name);
// Loop while we haven't found an option and Name still has at least two
// characters in it (so that the next iteration will not be the empty
// string...
- } while ((I == getOpts().end() || !Pred(I->second)) && Name.size() > 1);
+ } while ((OMI == OptionsMap.end() || !Pred(OMI->second)) && Name.size() > 1);
- if (I != getOpts().end() && Pred(I->second)) {
+ if (OMI != OptionsMap.end() && Pred(OMI->second)) {
Length = Name.length();
- return I->second; // Found one!
+ return OMI->second; // Found one!
}
return 0; // No option found!
}
static bool RequiresValue(const Option *O) {
- return O->getNumOccurancesFlag() == cl::Required ||
- O->getNumOccurancesFlag() == cl::OneOrMore;
+ return O->getNumOccurrencesFlag() == cl::Required ||
+ O->getNumOccurrencesFlag() == cl::OneOrMore;
}
static bool EatsUnboundedNumberOfValues(const Option *O) {
- return O->getNumOccurancesFlag() == cl::ZeroOrMore ||
- O->getNumOccurancesFlag() == cl::OneOrMore;
+ return O->getNumOccurrencesFlag() == cl::ZeroOrMore ||
+ O->getNumOccurrencesFlag() == cl::OneOrMore;
+}
+
+/// ParseCStringVector - Break INPUT up wherever one or more
+/// whitespace characters are found, and store the resulting tokens in
+/// OUTPUT. The tokens stored in OUTPUT are dynamically allocated
+/// using strdup (), so it is the caller's responsibility to free ()
+/// them later.
+///
+static void ParseCStringVector(std::vector<char *> &output,
+ const char *input) {
+ // Characters which will be treated as token separators:
+ static const char *const delims = " \v\f\t\r\n";
+
+ std::string work (input);
+ // Skip past any delims at head of input string.
+ size_t pos = work.find_first_not_of (delims);
+ // If the string consists entirely of delims, then exit early.
+ if (pos == std::string::npos) return;
+ // Otherwise, jump forward to beginning of first word.
+ work = work.substr (pos);
+ // Find position of first delimiter.
+ pos = work.find_first_of (delims);
+
+ while (!work.empty() && pos != std::string::npos) {
+ // Everything from 0 to POS is the next word to copy.
+ output.push_back (strdup (work.substr (0,pos).c_str ()));
+ // Is there another word in the string?
+ size_t nextpos = work.find_first_not_of (delims, pos + 1);
+ if (nextpos != std::string::npos) {
+ // Yes? Then remove delims from beginning ...
+ work = work.substr (work.find_first_not_of (delims, pos + 1));
+ // and find the end of the word.
+ pos = work.find_first_of (delims);
+ } else {
+ // No? (Remainder of string is delims.) End the loop.
+ work = "";
+ pos = std::string::npos;
+ }
+ }
+
+ // If `input' ended with non-delim char, then we'll get here with
+ // the last word of `input' in `work'; copy it now.
+ if (!work.empty ()) {
+ output.push_back (strdup (work.c_str ()));
+ }
+}
+
+/// ParseEnvironmentOptions - An alternative entry point to the
+/// CommandLine library, which allows you to read the program's name
+/// from the caller (as PROGNAME) and its command-line arguments from
+/// an environment variable (whose name is given in ENVVAR).
+///
+void cl::ParseEnvironmentOptions(const char *progName, const char *envVar,
+ const char *Overview, bool ReadResponseFiles) {
+ // Check args.
+ assert(progName && "Program name not specified");
+ assert(envVar && "Environment variable name missing");
+
+ // Get the environment variable they want us to parse options out of.
+ const char *envValue = getenv(envVar);
+ if (!envValue)
+ return;
+
+ // Get program's "name", which we wouldn't know without the caller
+ // telling us.
+ std::vector<char*> newArgv;
+ newArgv.push_back(strdup(progName));
+
+ // Parse the value of the environment variable into a "command line"
+ // and hand it off to ParseCommandLineOptions().
+ ParseCStringVector(newArgv, envValue);
+ int newArgc = static_cast<int>(newArgv.size());
+ ParseCommandLineOptions(newArgc, &newArgv[0], Overview, ReadResponseFiles);
+
+ // Free all the strdup()ed strings.
+ for (std::vector<char*>::iterator i = newArgv.begin(), e = newArgv.end();
+ i != e; ++i)
+ free (*i);
+}
+
+
+/// ExpandResponseFiles - Copy the contents of argv into newArgv,
+/// substituting the contents of the response files for the arguments
+/// of type @file.
+static void ExpandResponseFiles(int argc, char** argv,
+ std::vector<char*>& newArgv) {
+ for (int i = 1; i != argc; ++i) {
+ char* arg = argv[i];
+
+ if (arg[0] == '@') {
+
+ sys::PathWithStatus respFile(++arg);
+
+ // Check that the response file is not empty (mmap'ing empty
+ // files can be problematic).
+ const sys::FileStatus *FileStat = respFile.getFileStatus();
+ if (FileStat && FileStat->getSize() != 0) {
+
+ // Mmap the response file into memory.
+ OwningPtr<MemoryBuffer>
+ respFilePtr(MemoryBuffer::getFile(respFile.c_str()));
+
+ // If we could open the file, parse its contents, otherwise
+ // pass the @file option verbatim.
+
+ // TODO: we should also support recursive loading of response files,
+ // since this is how gcc behaves. (From their man page: "The file may
+ // itself contain additional @file options; any such options will be
+ // processed recursively.")
+
+ if (respFilePtr != 0) {
+ ParseCStringVector(newArgv, respFilePtr->getBufferStart());
+ continue;
+ }
+ }
+ }
+ newArgv.push_back(strdup(arg));
+ }
}
-void cl::ParseCommandLineOptions(int &argc, char **argv,
- const char *Overview = 0) {
- assert((!getOpts().empty() || !getPositionalOpts().empty()) &&
- "No options specified, or ParseCommandLineOptions called more"
- " than once!");
- ProgramName = argv[0]; // Save this away safe and snug
+void cl::ParseCommandLineOptions(int argc, char **argv,
+ const char *Overview, bool ReadResponseFiles) {
+ // Process all registered options.
+ std::vector<Option*> PositionalOpts;
+ std::vector<Option*> SinkOpts;
+ std::map<std::string, Option*> Opts;
+ GetOptionInfo(PositionalOpts, SinkOpts, Opts);
+
+ assert((!Opts.empty() || !PositionalOpts.empty()) &&
+ "No options specified!");
+
+ // Expand response files.
+ std::vector<char*> newArgv;
+ if (ReadResponseFiles) {
+ newArgv.push_back(strdup(argv[0]));
+ ExpandResponseFiles(argc, argv, newArgv);
+ argv = &newArgv[0];
+ argc = static_cast<int>(newArgv.size());
+ }
+
+ // 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());
+
ProgramOverview = Overview;
bool ErrorParsing = false;
- map<string, Option*> &Opts = getOpts();
- vector<Option*> &PositionalOpts = getPositionalOpts();
-
// Check out the positional arguments to collect information about them.
unsigned NumPositionalRequired = 0;
+
+ // Determine whether or not there are an unlimited number of positionals
+ bool HasUnlimitedPositionals = false;
+
Option *ConsumeAfterOpt = 0;
if (!PositionalOpts.empty()) {
- if (PositionalOpts[0]->getNumOccurancesFlag() == cl::ConsumeAfter) {
+ if (PositionalOpts[0]->getNumOccurrencesFlag() == cl::ConsumeAfter) {
assert(PositionalOpts.size() > 1 &&
"Cannot specify cl::ConsumeAfter without a positional argument!");
ConsumeAfterOpt = PositionalOpts[0];
// Calculate how many positional values are _required_.
bool UnboundedFound = false;
- for (unsigned i = ConsumeAfterOpt != 0, e = PositionalOpts.size();
+ for (size_t i = ConsumeAfterOpt != 0, e = PositionalOpts.size();
i != e; ++i) {
Option *Opt = PositionalOpts[i];
if (RequiresValue(Opt))
Opt->error(" error - this positional option will never be matched, "
"because it does not Require a value, and a "
"cl::ConsumeAfter option is active!");
- } else if (UnboundedFound) { // This option does not "require" a value...
- // Make sure this option is not specified after an option that eats all
- // extra arguments, or this one will never get any!
+ } else if (UnboundedFound && !Opt->ArgStr[0]) {
+ // This option does not "require" a value... Make sure this option is
+ // not specified after an option that eats all extra arguments, or this
+ // one will never get any!
//
ErrorParsing |= Opt->error(" error - option can never match, because "
"another positional argument will match an "
}
UnboundedFound |= EatsUnboundedNumberOfValues(Opt);
}
+ HasUnlimitedPositionals = UnboundedFound || ConsumeAfterOpt;
}
- // PositionalVals - A vector of "positional" arguments we accumulate into to
- // processes at the end...
+ // PositionalVals - A vector of "positional" arguments we accumulate into
+ // the process at the end...
//
- vector<string> PositionalVals;
+ std::vector<std::pair<std::string,unsigned> > PositionalVals;
+
+ // If the program has named positional arguments, and the name has been run
+ // across, keep track of which positional argument was named. Otherwise put
+ // the positional args into the PositionalVals list...
+ Option *ActivePositionalArg = 0;
// Loop over all of the arguments... processing them.
bool DashDashFound = false; // Have we read '--'?
for (int i = 1; i < argc; ++i) {
Option *Handler = 0;
- const char *Value = "";
+ const char *Value = 0;
const char *ArgName = "";
+ // If the option list changed, this means that some command line
+ // option has just been registered or deregistered. This can occur in
+ // response to things like -load, etc. If this happens, rescan the options.
+ if (OptionListChanged) {
+ PositionalOpts.clear();
+ SinkOpts.clear();
+ Opts.clear();
+ GetOptionInfo(PositionalOpts, SinkOpts, Opts);
+ OptionListChanged = false;
+ }
+
// Check to see if this is a positional argument. This argument is
// considered to be positional if it doesn't start with '-', if it is "-"
- // itself, or if we have see "--" already.
+ // itself, or if we have seen "--" already.
//
if (argv[i][0] != '-' || argv[i][1] == 0 || DashDashFound) {
// Positional argument!
- if (!PositionalOpts.empty()) {
- PositionalVals.push_back(argv[i]);
+ if (ActivePositionalArg) {
+ ProvidePositionalOption(ActivePositionalArg, argv[i], i);
+ continue; // We are done!
+ } else if (!PositionalOpts.empty()) {
+ PositionalVals.push_back(std::make_pair(argv[i],i));
// All of the positional arguments have been fulfulled, give the rest to
// the consume after option... if it's specified...
//
- if (PositionalVals.size() == NumPositionalRequired &&
+ if (PositionalVals.size() >= NumPositionalRequired &&
ConsumeAfterOpt != 0) {
for (++i; i < argc; ++i)
- PositionalVals.push_back(argv[i]);
+ PositionalVals.push_back(std::make_pair(argv[i],i));
break; // Handle outside of the argument processing loop...
}
// Delay processing positional arguments until the end...
continue;
}
- } else { // We start with a '-', must be an argument...
+ } else if (argv[i][0] == '-' && argv[i][1] == '-' && argv[i][2] == 0 &&
+ !DashDashFound) {
+ DashDashFound = true; // This is the mythical "--"?
+ continue; // Don't try to process it as an argument itself.
+ } else if (ActivePositionalArg &&
+ (ActivePositionalArg->getMiscFlags() & PositionalEatsArgs)) {
+ // If there is a positional argument eating options, check to see if this
+ // option is another positional argument. If so, treat it as an argument,
+ // otherwise feed it to the eating positional.
ArgName = argv[i]+1;
- while (*ArgName == '-') ++ArgName; // Eat leading dashes
-
- if (*ArgName == 0 && !DashDashFound) { // Is this the mythical "--"?
- DashDashFound = true; // Yup, take note of that fact...
- continue; // Don't try to process it as an argument iself.
+ Handler = LookupOption(ArgName, Value, Opts);
+ if (!Handler || Handler->getFormattingFlag() != cl::Positional) {
+ ProvidePositionalOption(ActivePositionalArg, argv[i], i);
+ continue; // We are done!
}
- const char *ArgNameEnd = ArgName;
- while (*ArgNameEnd && *ArgNameEnd != '=')
- ++ArgNameEnd; // Scan till end of argument name...
-
- Value = ArgNameEnd;
- if (*Value) // If we have an equals sign...
- ++Value; // Advance to value...
-
- if (*ArgName != 0) {
- string RealName(ArgName, ArgNameEnd);
- // Extract arg name part
- map<string, Option*>::iterator I = Opts.find(RealName);
+ } else { // We start with a '-', must be an argument...
+ ArgName = argv[i]+1;
+ Handler = LookupOption(ArgName, Value, Opts);
- if (I == Opts.end() && !*Value && RealName.size() > 1) {
- // Check to see if this "option" is really a prefixed or grouped
- // argument...
- //
- unsigned Length = 0;
- Option *PGOpt = getOptionPred(RealName, Length, isPrefixedOrGrouping);
+ // Check to see if this "option" is really a prefixed or grouped argument.
+ if (Handler == 0) {
+ std::string RealName(ArgName);
+ if (RealName.size() > 1) {
+ size_t Length = 0;
+ Option *PGOpt = getOptionPred(RealName, Length, isPrefixedOrGrouping,
+ Opts);
// 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.
//
if (PGOpt && PGOpt->getFormattingFlag() == cl::Prefix) {
- ArgNameEnd = ArgName+Length;
- Value = ArgNameEnd;
- I = Opts.find(string(ArgName, ArgNameEnd));
- assert(I->second == PGOpt);
+ Value = ArgName+Length;
+ assert(Opts.find(std::string(ArgName, Value)) != Opts.end() &&
+ Opts.find(std::string(ArgName, Value))->second == PGOpt);
+ Handler = PGOpt;
} else if (PGOpt) {
- // This must be a grouped option... handle all of them now...
+ // This must be a grouped option... handle them now.
assert(isGrouping(PGOpt) && "Broken getOptionPred!");
do {
// Move current arg name out of RealName into RealArgName...
- string RealArgName(RealName.begin(), RealName.begin()+Length);
- RealName.erase(RealName.begin(), RealName.begin()+Length);
+ std::string RealArgName(RealName.begin(),
+ RealName.begin() + Length);
+ RealName.erase(RealName.begin(), RealName.begin() + Length);
- // Because ValueRequired is an invalid flag for grouped arguments,
- // we don't need to pass argc/argv in...
- //
+ // 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;
- ErrorParsing |= ProvideOption(PGOpt, RealArgName.c_str(), "",
- 0, 0, Dummy);
+ ErrorParsing |= ProvideOption(PGOpt, RealArgName.c_str(),
+ 0, 0, 0, Dummy);
// Get the next grouping option...
- if (!RealName.empty())
- PGOpt = getOptionPred(RealName, Length, isGrouping);
- } while (!RealName.empty() && PGOpt);
+ PGOpt = getOptionPred(RealName, Length, isGrouping, Opts);
+ } while (PGOpt && Length != RealName.size());
- if (RealName.empty()) // Processed all of the options, move on
- continue; // to the next argv[] value...
-
- // If RealName is not empty, that means we did not match one of the
- // options! This is an error.
- //
- I = Opts.end();
+ Handler = PGOpt; // Ate all of the options.
}
- }
-
- Handler = I != Opts.end() ? I->second : 0;
+ }
}
}
if (Handler == 0) {
- cerr << "Unknown command line argument '" << argv[i] << "'. Try: "
- << argv[0] << " --help'\n";
- ErrorParsing = true;
+ if (SinkOpts.empty()) {
+ cerr << ProgramName << ": Unknown command line argument '"
+ << argv[i] << "'. Try: '" << argv[0] << " --help'\n";
+ ErrorParsing = true;
+ } else {
+ for (std::vector<Option*>::iterator I = SinkOpts.begin(),
+ E = SinkOpts.end(); I != E ; ++I)
+ (*I)->addOccurrence(i, "", argv[i]);
+ }
continue;
}
- ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i);
+ // 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 (Value && Handler->getMiscFlags() & CommaSeparated) {
+ std::string Val(Value);
+ std::string::size_type Pos = Val.find(',');
+
+ while (Pos != std::string::npos) {
+ // Process the portion before the comma...
+ ErrorParsing |= ProvideOption(Handler, ArgName,
+ std::string(Val.begin(),
+ Val.begin()+Pos).c_str(),
+ argc, argv, i);
+ // Erase the portion before the comma, AND the comma...
+ Val.erase(Val.begin(), Val.begin()+Pos+1);
+ Value += 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)
+ ActivePositionalArg = Handler;
+ else
+ ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i);
}
// Check and handle positional arguments now...
if (NumPositionalRequired > PositionalVals.size()) {
- cerr << "Not enough positional command line arguments specified!\n";
- cerr << "Must specify at least " << NumPositionalRequired
+ cerr << ProgramName
+ << ": Not enough positional command line arguments specified!\n"
+ << "Must specify at least " << NumPositionalRequired
<< " positional arguments: See: " << argv[0] << " --help\n";
- ErrorParsing = true;
+ ErrorParsing = true;
+ } else if (!HasUnlimitedPositionals
+ && PositionalVals.size() > PositionalOpts.size()) {
+ cerr << ProgramName
+ << ": Too many positional arguments specified!\n"
+ << "Can specify at most " << PositionalOpts.size()
+ << " positional arguments: See: " << argv[0] << " --help\n";
+ ErrorParsing = true;
} else if (ConsumeAfterOpt == 0) {
// Positional args have already been handled if ConsumeAfter is specified...
- unsigned ValNo = 0, NumVals = PositionalVals.size();
- for (unsigned i = 0, e = PositionalOpts.size(); i != e; ++i) {
+ unsigned ValNo = 0, NumVals = static_cast<unsigned>(PositionalVals.size());
+ for (size_t i = 0, e = PositionalOpts.size(); i != e; ++i) {
if (RequiresValue(PositionalOpts[i])) {
- ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo++]);
+ ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
--NumPositionalRequired; // We fulfilled our duty...
}
// do not give it values that others need. 'Done' controls whether the
// option even _WANTS_ any more.
//
- bool Done = PositionalOpts[i]->getNumOccurancesFlag() == cl::Required;
+ bool Done = PositionalOpts[i]->getNumOccurrencesFlag() == cl::Required;
while (NumVals-ValNo > NumPositionalRequired && !Done) {
- switch (PositionalOpts[i]->getNumOccurancesFlag()) {
+ switch (PositionalOpts[i]->getNumOccurrencesFlag()) {
case cl::Optional:
Done = true; // Optional arguments want _at most_ one value
// FALL THROUGH
case cl::ZeroOrMore: // Zero or more will take all they can get...
case cl::OneOrMore: // One or more will take all they can get...
- ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo++]);
+ ProvidePositionalOption(PositionalOpts[i],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
break;
default:
- assert(0 && "Internal error, unexpected NumOccurances flag in "
+ LLVM_UNREACHABLE("Internal error, unexpected NumOccurrences flag in "
"positional argument processing!");
}
}
} else {
assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size());
unsigned ValNo = 0;
- for (unsigned j = 1, e = PositionalOpts.size(); j != e; ++j)
- if (RequiresValue(PositionalOpts[j]))
- ErrorParsing |=
- ProvidePositionalOption(PositionalOpts[j], PositionalVals[ValNo++]);
-
+ for (size_t j = 1, e = PositionalOpts.size(); j != e; ++j)
+ if (RequiresValue(PositionalOpts[j])) {
+ ErrorParsing |= ProvidePositionalOption(PositionalOpts[j],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
+ }
+
+ // Handle the case where there is just one positional option, and it's
+ // optional. In this case, we want to give JUST THE FIRST option to the
+ // positional option and keep the rest for the consume after. The above
+ // loop would have assigned no values to positional options in this case.
+ //
+ if (PositionalOpts.size() == 2 && ValNo == 0 && !PositionalVals.empty()) {
+ ErrorParsing |= ProvidePositionalOption(PositionalOpts[1],
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
+ ValNo++;
+ }
+
// Handle over all of the rest of the arguments to the
// cl::ConsumeAfter command line option...
for (; ValNo != PositionalVals.size(); ++ValNo)
ErrorParsing |= ProvidePositionalOption(ConsumeAfterOpt,
- PositionalVals[ValNo]);
+ PositionalVals[ValNo].first,
+ PositionalVals[ValNo].second);
}
// Loop over args and make sure all required args are specified!
- for (map<string, Option*>::iterator I = Opts.begin(),
- E = Opts.end(); I != E; ++I) {
- switch (I->second->getNumOccurancesFlag()) {
+ for (std::map<std::string, Option*>::iterator I = Opts.begin(),
+ E = Opts.end(); I != E; ++I) {
+ switch (I->second->getNumOccurrencesFlag()) {
case Required:
case OneOrMore:
- if (I->second->getNumOccurances() == 0) {
- I->second->error(" must be specified at least once!");
+ if (I->second->getNumOccurrences() == 0) {
+ I->second->error(" must be specified at least once!");
ErrorParsing = true;
}
// Fall through
// be processed once!
Opts.clear();
PositionalOpts.clear();
+ MoreHelp->clear();
+
+ // Free the memory allocated by ExpandResponseFiles.
+ if (ReadResponseFiles) {
+ // Free all the strdup()ed strings.
+ for (std::vector<char*>::iterator i = newArgv.begin(), e = newArgv.end();
+ i != e; ++i)
+ free (*i);
+ }
// If we had an error processing our arguments, don't let the program execute
if (ErrorParsing) exit(1);
// Option Base class implementation
//
-bool Option::error(string Message, const char *ArgName = 0) {
+bool Option::error(std::string Message, const char *ArgName) {
if (ArgName == 0) ArgName = ArgStr;
if (ArgName[0] == 0)
cerr << HelpStr; // Be nice for positional arguments
else
- cerr << "-" << ArgName;
- cerr << " option" << Message << "\n";
+ cerr << ProgramName << ": for the -" << ArgName;
+
+ cerr << " option: " << Message << "\n";
return true;
}
-bool Option::addOccurance(const char *ArgName, const string &Value) {
- NumOccurances++; // Increment the number of times we have been seen
+bool Option::addOccurrence(unsigned pos, const char *ArgName,
+ const std::string &Value,
+ bool MultiArg) {
+ if (!MultiArg)
+ NumOccurrences++; // Increment the number of times we have been seen
- switch (getNumOccurancesFlag()) {
+ switch (getNumOccurrencesFlag()) {
case Optional:
- if (NumOccurances > 1)
+ if (NumOccurrences > 1)
return error(": may only occur zero or one times!", ArgName);
break;
case Required:
- if (NumOccurances > 1)
+ if (NumOccurrences > 1)
return error(": must occur exactly one time!", ArgName);
// Fall through
case OneOrMore:
case ZeroOrMore:
case ConsumeAfter: break;
- default: return error(": bad num occurances flag value!");
+ default: return error(": bad num occurrences flag value!");
}
- return handleOccurance(ArgName, Value);
-}
-
-// addArgument - Tell the system that this Option subclass will handle all
-// occurances of -ArgStr on the command line.
-//
-void Option::addArgument(const char *ArgStr) {
- if (ArgStr[0])
- AddArgument(ArgStr, this);
- else if (getFormattingFlag() == Positional)
- getPositionalOpts().push_back(this);
- else if (getNumOccurancesFlag() == ConsumeAfter) {
- assert((getPositionalOpts().empty() ||
- getPositionalOpts().front()->getNumOccurancesFlag() != ConsumeAfter)
- && "Cannot specify more than one option with cl::ConsumeAfter "
- "specified!");
- getPositionalOpts().insert(getPositionalOpts().begin(), this);
- }
+ return handleOccurrence(pos, ArgName, Value);
}
//
// Return the width of the option tag for printing...
-unsigned alias::getOptionWidth() const {
+size_t alias::getOptionWidth() const {
return std::strlen(ArgStr)+6;
}
-// Print out the option for the alias...
-void alias::printOptionInfo(unsigned GlobalWidth) const {
- unsigned L = std::strlen(ArgStr);
- cerr << " -" << ArgStr << string(GlobalWidth-L-6, ' ') << " - "
+// Print out the option for the alias.
+void alias::printOptionInfo(size_t GlobalWidth) const {
+ size_t L = std::strlen(ArgStr);
+ cout << " -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - "
<< HelpStr << "\n";
}
// Parser Implementation code...
//
+// basic_parser implementation
+//
+
+// Return the width of the option tag for printing...
+size_t basic_parser_impl::getOptionWidth(const Option &O) const {
+ size_t Len = std::strlen(O.ArgStr);
+ if (const char *ValName = getValueName())
+ Len += std::strlen(getValueStr(O, ValName))+3;
+
+ return Len + 6;
+}
+
+// printOptionInfo - Print out information about this option. The
+// to-be-maintained width is specified.
+//
+void basic_parser_impl::printOptionInfo(const Option &O,
+ size_t GlobalWidth) const {
+ cout << " -" << O.ArgStr;
+
+ if (const char *ValName = getValueName())
+ cout << "=<" << getValueStr(O, ValName) << ">";
+
+ cout << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - "
+ << O.HelpStr << "\n";
+}
+
+
+
+
// parser<bool> implementation
//
-bool parser<bool>::parseImpl(Option &O, const string &Arg, bool &Value) {
- if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
+bool parser<bool>::parse(Option &O, const char *ArgName,
+ const std::string &Arg, bool &Value) {
+ if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
Arg == "1") {
Value = true;
} else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
return false;
}
-// Return the width of the option tag for printing...
-unsigned parser<bool>::getOptionWidth(const Option &O) const {
- return std::strlen(O.ArgStr)+6;
-}
-
-// printOptionInfo - Print out information about this option. The
-// to-be-maintained width is specified.
+// parser<boolOrDefault> implementation
//
-void parser<bool>::printOptionInfo(const Option &O, unsigned GlobalWidth) const{
- unsigned L = std::strlen(O.ArgStr);
- cerr << " -" << O.ArgStr << string(GlobalWidth-L-6, ' ') << " - "
- << O.HelpStr << "\n";
+bool parser<boolOrDefault>::parse(Option &O, const char *ArgName,
+ const std::string &Arg, boolOrDefault &Value) {
+ if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
+ Arg == "1") {
+ Value = BOU_TRUE;
+ } else if (Arg == "false" || Arg == "FALSE"
+ || Arg == "False" || Arg == "0") {
+ Value = BOU_FALSE;
+ } else {
+ return O.error(": '" + Arg +
+ "' is invalid value for boolean argument! Try 0 or 1");
+ }
+ return false;
}
-
-
// parser<int> implementation
//
-bool parser<int>::parseImpl(Option &O, const string &Arg, int &Value) {
- const char *ArgStart = Arg.c_str();
+bool parser<int>::parse(Option &O, const char *ArgName,
+ const std::string &Arg, int &Value) {
char *End;
- Value = (int)strtol(ArgStart, &End, 0);
- if (*End != 0)
+ Value = (int)strtol(Arg.c_str(), &End, 0);
+ if (*End != 0)
return O.error(": '" + Arg + "' value invalid for integer argument!");
return false;
}
-// Return the width of the option tag for printing...
-unsigned parser<int>::getOptionWidth(const Option &O) const {
- return std::strlen(O.ArgStr)+std::strlen(getValueStr(O, "int"))+9;
-}
-
-// printOptionInfo - Print out information about this option. The
-// to-be-maintained width is specified.
+// parser<unsigned> implementation
//
-void parser<int>::printOptionInfo(const Option &O, unsigned GlobalWidth) const{
- cerr << " -" << O.ArgStr << "=<" << getValueStr(O, "int") << ">"
- << string(GlobalWidth-getOptionWidth(O), ' ') << " - "
- << O.HelpStr << "\n";
+bool parser<unsigned>::parse(Option &O, const char *ArgName,
+ const std::string &Arg, unsigned &Value) {
+ char *End;
+ errno = 0;
+ unsigned long V = strtoul(Arg.c_str(), &End, 0);
+ Value = (unsigned)V;
+ if (((V == ULONG_MAX) && (errno == ERANGE))
+ || (*End != 0)
+ || (Value != V))
+ return O.error(": '" + Arg + "' value invalid for uint argument!");
+ return false;
}
-
-// parser<double> implementation
+// parser<double>/parser<float> implementation
//
-bool parser<double>::parseImpl(Option &O, const string &Arg, double &Value) {
+static bool parseDouble(Option &O, const std::string &Arg, double &Value) {
const char *ArgStart = Arg.c_str();
char *End;
Value = strtod(ArgStart, &End);
- if (*End != 0)
+ if (*End != 0)
return O.error(": '" +Arg+ "' value invalid for floating point argument!");
return false;
}
-// Return the width of the option tag for printing...
-unsigned parser<double>::getOptionWidth(const Option &O) const {
- return std::strlen(O.ArgStr)+std::strlen(getValueStr(O, "number"))+9;
+bool parser<double>::parse(Option &O, const char *AN,
+ const std::string &Arg, double &Val) {
+ return parseDouble(O, Arg, Val);
}
-// printOptionInfo - Print out information about this option. The
-// to-be-maintained width is specified.
-//
-void parser<double>::printOptionInfo(const Option &O,
- unsigned GlobalWidth) const{
- cerr << " -" << O.ArgStr << "=<" << getValueStr(O, "number") << ">"
- << string(GlobalWidth-getOptionWidth(O), ' ')
- << " - " << O.HelpStr << "\n";
+bool parser<float>::parse(Option &O, const char *AN,
+ const std::string &Arg, float &Val) {
+ double dVal;
+ if (parseDouble(O, Arg, dVal))
+ return true;
+ Val = (float)dVal;
+ return false;
}
-// parser<string> implementation
-//
-// Return the width of the option tag for printing...
-unsigned parser<string>::getOptionWidth(const Option &O) const {
- return std::strlen(O.ArgStr)+std::strlen(getValueStr(O, "string"))+9;
-}
+// generic_parser_base implementation
+//
-// printOptionInfo - Print out information about this option. The
-// to-be-maintained width is specified.
+// findOption - Return the option number corresponding to the specified
+// argument string. If the option is not found, getNumOptions() is returned.
//
-void parser<string>::printOptionInfo(const Option &O,
- unsigned GlobalWidth) const{
- cerr << " -" << O.ArgStr << " <" << getValueStr(O, "string") << ">"
- << string(GlobalWidth-getOptionWidth(O), ' ')
- << " - " << O.HelpStr << "\n";
+unsigned generic_parser_base::findOption(const char *Name) {
+ unsigned i = 0, e = getNumOptions();
+ std::string N(Name);
+
+ while (i != e)
+ if (getOption(i) == N)
+ return i;
+ else
+ ++i;
+ return e;
}
-// generic_parser_base implementation
-//
// Return the width of the option tag for printing...
-unsigned generic_parser_base::getOptionWidth(const Option &O) const {
+size_t generic_parser_base::getOptionWidth(const Option &O) const {
if (O.hasArgStr()) {
- unsigned Size = std::strlen(O.ArgStr)+6;
+ size_t Size = std::strlen(O.ArgStr)+6;
for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
- Size = std::max(Size, (unsigned)std::strlen(getOption(i))+8);
+ Size = std::max(Size, std::strlen(getOption(i))+8);
return Size;
} else {
- unsigned BaseSize = 0;
+ size_t BaseSize = 0;
for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
- BaseSize = std::max(BaseSize, (unsigned)std::strlen(getOption(i))+8);
+ BaseSize = std::max(BaseSize, std::strlen(getOption(i))+8);
return BaseSize;
}
}
-// printOptionInfo - Print out information about this option. The
+// printOptionInfo - Print out information about this option. The
// to-be-maintained width is specified.
//
void generic_parser_base::printOptionInfo(const Option &O,
- unsigned GlobalWidth) const {
+ size_t GlobalWidth) const {
if (O.hasArgStr()) {
- unsigned L = std::strlen(O.ArgStr);
- cerr << " -" << O.ArgStr << string(GlobalWidth-L-6, ' ')
+ size_t L = std::strlen(O.ArgStr);
+ cout << " -" << O.ArgStr << std::string(GlobalWidth-L-6, ' ')
<< " - " << O.HelpStr << "\n";
for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
- unsigned NumSpaces = GlobalWidth-strlen(getOption(i))-8;
- cerr << " =" << getOption(i) << string(NumSpaces, ' ') << " - "
- << getDescription(i) << "\n";
+ size_t NumSpaces = GlobalWidth-strlen(getOption(i))-8;
+ cout << " =" << getOption(i) << std::string(NumSpaces, ' ')
+ << " - " << getDescription(i) << "\n";
}
} else {
if (O.HelpStr[0])
- cerr << " " << O.HelpStr << "\n";
+ cout << " " << O.HelpStr << "\n";
for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
- unsigned L = std::strlen(getOption(i));
- cerr << " -" << getOption(i) << string(GlobalWidth-L-8, ' ') << " - "
- << getDescription(i) << "\n";
+ size_t L = std::strlen(getOption(i));
+ cout << " -" << getOption(i) << std::string(GlobalWidth-L-8, ' ')
+ << " - " << getDescription(i) << "\n";
}
}
}
//===----------------------------------------------------------------------===//
// --help and --help-hidden option implementation
//
+
namespace {
class HelpPrinter {
- unsigned MaxArgLen;
+ size_t MaxArgLen;
const Option *EmptyArg;
const bool ShowHidden;
// isHidden/isReallyHidden - Predicates to be used to filter down arg lists.
- inline static bool isHidden(pair<string, Option *> &OptPair) {
+ inline static bool isHidden(std::pair<std::string, Option *> &OptPair) {
return OptPair.second->getOptionHiddenFlag() >= Hidden;
}
- inline static bool isReallyHidden(pair<string, Option *> &OptPair) {
+ inline static bool isReallyHidden(std::pair<std::string, Option *> &OptPair) {
return OptPair.second->getOptionHiddenFlag() == ReallyHidden;
}
public:
- HelpPrinter(bool showHidden) : ShowHidden(showHidden) {
+ explicit HelpPrinter(bool showHidden) : ShowHidden(showHidden) {
EmptyArg = 0;
}
void operator=(bool Value) {
if (Value == false) return;
+ // Get all the options.
+ std::vector<Option*> PositionalOpts;
+ std::vector<Option*> SinkOpts;
+ std::map<std::string, Option*> OptMap;
+ GetOptionInfo(PositionalOpts, SinkOpts, OptMap);
+
// Copy Options into a vector so we can sort them as we like...
- vector<pair<string, Option*> > Options;
- copy(getOpts().begin(), getOpts().end(), std::back_inserter(Options));
+ std::vector<std::pair<std::string, Option*> > Opts;
+ copy(OptMap.begin(), OptMap.end(), std::back_inserter(Opts));
// Eliminate Hidden or ReallyHidden arguments, depending on ShowHidden
- Options.erase(std::remove_if(Options.begin(), Options.end(),
- std::ptr_fun(ShowHidden ? isReallyHidden : isHidden)),
- Options.end());
+ Opts.erase(std::remove_if(Opts.begin(), Opts.end(),
+ std::ptr_fun(ShowHidden ? isReallyHidden : isHidden)),
+ Opts.end());
// Eliminate duplicate entries in table (from enum flags options, f.e.)
{ // Give OptionSet a scope
std::set<Option*> OptionSet;
- for (unsigned i = 0; i != Options.size(); ++i)
- if (OptionSet.count(Options[i].second) == 0)
- OptionSet.insert(Options[i].second); // Add new entry to set
+ for (unsigned i = 0; i != Opts.size(); ++i)
+ if (OptionSet.count(Opts[i].second) == 0)
+ OptionSet.insert(Opts[i].second); // Add new entry to set
else
- Options.erase(Options.begin()+i--); // Erase duplicate
+ Opts.erase(Opts.begin()+i--); // Erase duplicate
}
if (ProgramOverview)
- cerr << "OVERVIEW:" << ProgramOverview << "\n";
+ cout << "OVERVIEW: " << ProgramOverview << "\n";
- cerr << "USAGE: " << ProgramName << " [options]";
+ cout << "USAGE: " << ProgramName << " [options]";
- // Print out the positional options...
- vector<Option*> &PosOpts = getPositionalOpts();
+ // Print out the positional options.
Option *CAOpt = 0; // The cl::ConsumeAfter option, if it exists...
- if (!PosOpts.empty() && PosOpts[0]->getNumOccurancesFlag() == ConsumeAfter)
- CAOpt = PosOpts[0];
-
- for (unsigned i = CAOpt != 0, e = PosOpts.size(); i != e; ++i) {
- cerr << " " << PosOpts[i]->HelpStr;
- switch (PosOpts[i]->getNumOccurancesFlag()) {
- case Optional: cerr << "?"; break;
- case ZeroOrMore: cerr << "*"; break;
- case Required: break;
- case OneOrMore: cerr << "+"; break;
- case ConsumeAfter:
- default:
- assert(0 && "Unknown NumOccurances Flag Value!");
- }
+ if (!PositionalOpts.empty() &&
+ PositionalOpts[0]->getNumOccurrencesFlag() == ConsumeAfter)
+ CAOpt = PositionalOpts[0];
+
+ for (size_t i = CAOpt != 0, e = PositionalOpts.size(); i != e; ++i) {
+ if (PositionalOpts[i]->ArgStr[0])
+ cout << " --" << PositionalOpts[i]->ArgStr;
+ cout << " " << PositionalOpts[i]->HelpStr;
}
// Print the consume after option info if it exists...
- if (CAOpt) cerr << " " << CAOpt->HelpStr;
+ if (CAOpt) cout << " " << CAOpt->HelpStr;
- cerr << "\n\n";
+ cout << "\n\n";
// Compute the maximum argument length...
MaxArgLen = 0;
- for (unsigned i = 0, e = Options.size(); i != e; ++i)
- MaxArgLen = std::max(MaxArgLen, Options[i].second->getOptionWidth());
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth());
- cerr << "OPTIONS:\n";
- for (unsigned i = 0, e = Options.size(); i != e; ++i)
- Options[i].second->printOptionInfo(MaxArgLen);
+ cout << "OPTIONS:\n";
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ Opts[i].second->printOptionInfo(MaxArgLen);
- // Halt the program if help information is printed
+ // Print any extra help the user has declared.
+ for (std::vector<const char *>::iterator I = MoreHelp->begin(),
+ E = MoreHelp->end(); I != E; ++I)
+ cout << *I;
+ MoreHelp->clear();
+
+ // Halt the program since help information was printed
exit(1);
}
};
-
-
+} // End anonymous namespace
// Define the two HelpPrinter instances that are used to print out help, or
// help-hidden...
//
-HelpPrinter NormalPrinter(false);
-HelpPrinter HiddenPrinter(true);
+static HelpPrinter NormalPrinter(false);
+static HelpPrinter HiddenPrinter(true);
+
+static cl::opt<HelpPrinter, true, parser<bool> >
+HOp("help", cl::desc("Display available options (--help-hidden for more)"),
+ cl::location(NormalPrinter), cl::ValueDisallowed);
-cl::opt<HelpPrinter, true, parser<bool> >
-HOp("help", cl::desc("display available options (--help-hidden for more)"),
- cl::location(NormalPrinter));
+static cl::opt<HelpPrinter, true, parser<bool> >
+HHOp("help-hidden", cl::desc("Display all available options"),
+ cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed);
-cl::opt<HelpPrinter, true, parser<bool> >
-HHOp("help-hidden", cl::desc("display all available options"),
- cl::location(HiddenPrinter), cl::Hidden);
+static void (*OverrideVersionPrinter)() = 0;
+namespace {
+class VersionPrinter {
+public:
+ void print() {
+ cout << "Low Level Virtual Machine (http://llvm.org/):\n";
+ cout << " " << PACKAGE_NAME << " version " << PACKAGE_VERSION;
+#ifdef LLVM_VERSION_INFO
+ cout << LLVM_VERSION_INFO;
+#endif
+ cout << "\n ";
+#ifndef __OPTIMIZE__
+ cout << "DEBUG build";
+#else
+ cout << "Optimized build";
+#endif
+#ifndef NDEBUG
+ cout << " with assertions";
+#endif
+ cout << ".\n";
+ cout << " Built " << __DATE__ << "(" << __TIME__ << ").\n";
+ }
+ void operator=(bool OptionWasSpecified) {
+ if (OptionWasSpecified) {
+ if (OverrideVersionPrinter == 0) {
+ print();
+ exit(1);
+ } else {
+ (*OverrideVersionPrinter)();
+ exit(1);
+ }
+ }
+ }
+};
} // End anonymous namespace
+
+
+// Define the --version option that prints out the LLVM version for the tool
+static VersionPrinter VersionPrinterInstance;
+
+static cl::opt<VersionPrinter, true, parser<bool> >
+VersOp("version", cl::desc("Display the version of this program"),
+ cl::location(VersionPrinterInstance), cl::ValueDisallowed);
+
+// Utility function for printing the help message.
+void cl::PrintHelpMessage() {
+ // This looks weird, but it actually prints the help message. The
+ // 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.
+ NormalPrinter = true;
+}
+
+/// Utility function for printing version number.
+void cl::PrintVersionMessage() {
+ VersionPrinterInstance.print();
+}
+
+void cl::SetVersionPrinter(void (*func)()) {
+ OverrideVersionPrinter = func;
+}
projects / oota-llvm.git / blobdiff