//===-- CommandLine.cpp - Command line parser implementation --------------===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and 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
#include "llvm/Config/config.h"
#include "llvm/Support/CommandLine.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>
using namespace llvm;
-
using namespace cl;
-// Globals for name and overview of program
-static const char *ProgramName = "<unknown>";
+//===----------------------------------------------------------------------===//
+// Template instantiations and anchors.
+//
+TEMPLATE_INSTANTIATION(class basic_parser<bool>);
+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 opt<unsigned>);
+TEMPLATE_INSTANTIATION(class opt<int>);
+TEMPLATE_INSTANTIATION(class opt<std::string>);
+TEMPLATE_INSTANTIATION(class opt<bool>);
+
+void Option::anchor() {}
+void basic_parser_impl::anchor() {}
+void parser<bool>::anchor() {}
+void parser<int>::anchor() {}
+void parser<unsigned>::anchor() {}
+void parser<double>::anchor() {}
+void parser<float>::anchor() {}
+void parser<std::string>::anchor() {}
+
+//===----------------------------------------------------------------------===//
+
+// 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);
+}
+
//===----------------------------------------------------------------------===//
-// Basic, shared command line option processing machinery...
+// Basic, shared command line option processing machinery.
//
-// 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 std::map<std::string, Option*> *CommandLineOptions = 0;
-static std::map<std::string, Option*> &getOpts() {
- if (CommandLineOptions == 0)
- CommandLineOptions = new std::map<std::string,Option*>();
- return *CommandLineOptions;
-}
+static ManagedStatic<std::map<std::string, Option*> > Options;
+static ManagedStatic<std::vector<Option*> > PositionalOptions;
static Option *getOption(const std::string &Str) {
- if (CommandLineOptions == 0) return 0;
- std::map<std::string,Option*>::iterator I = CommandLineOptions->find(Str);
- return I != CommandLineOptions->end() ? I->second : 0;
-}
-
-static std::vector<Option*> &getPositionalOpts() {
- static std::vector<Option*> *Positional = 0;
- if (!Positional) Positional = new std::vector<Option*>();
- return *Positional;
+ std::map<std::string,Option*>::iterator I = Options->find(Str);
+ return I != Options->end() ? I->second : 0;
}
static void AddArgument(const char *ArgName, Option *Opt) {
if (getOption(ArgName)) {
- std::cerr << ProgramName << ": CommandLine Error: Argument '"
- << ArgName << "' defined more than once!\n";
+ cerr << ProgramName << ": CommandLine Error: Argument '"
+ << ArgName << "' defined more than once!\n";
} else {
// Add argument to the argument map!
- getOpts()[ArgName] = Opt;
+ (*Options)[ArgName] = Opt;
}
}
// RemoveArgument - It's possible that the argument is no longer in the map if
// options have already been processed and the map has been deleted!
-//
+//
static void RemoveArgument(const char *ArgName, Option *Opt) {
- if (CommandLineOptions == 0) return;
+ if (Options->empty()) return;
+
#ifndef NDEBUG
// This disgusting HACK is brought to you courtesy of GCC 3.3.2, which ICE's
// If we pass ArgName directly into getOption here.
std::string Tmp = ArgName;
assert(getOption(Tmp) == Opt && "Arg not in map!");
#endif
- CommandLineOptions->erase(ArgName);
- if (CommandLineOptions->empty()) {
- delete CommandLineOptions;
- CommandLineOptions = 0;
- }
+ Options->erase(ArgName);
}
static inline bool ProvideOption(Option *Handler, const char *ArgName,
// 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! '" +
+ if (Value)
+ return Handler->error(" does not allow a value! '" +
std::string(Value) + "' specified.");
break;
- case ValueOptional:
+ case ValueOptional:
break;
- default:
- std::cerr << ProgramName
- << ": Bad ValueMask flag! CommandLine usage error:"
- << Handler->getValueExpectedFlag() << "\n";
+ default:
+ cerr << ProgramName
+ << ": Bad ValueMask flag! CommandLine usage error:"
+ << Handler->getValueExpectedFlag() << "\n";
abort();
break;
}
// Run the handler now!
- return Handler->addOccurrence(i, ArgName, Value);
+ return Handler->addOccurrence(i, ArgName, Value ? Value : "");
}
-static bool ProvidePositionalOption(Option *Handler, const std::string &Arg,
+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);
//
static Option *getOptionPred(std::string Name, unsigned &Length,
bool (*Pred)(const Option*)) {
-
+
Option *Op = getOption(Name);
if (Op && Pred(Op)) {
Length = Name.length();
/// using strdup (), so it is the caller's responsibility to free ()
/// them later.
///
-static void ParseCStringVector (std::vector<char *> &output,
- const char *input) {
+static void ParseCStringVector(std::vector<char *> &output,
+ const char *input) {
// Characters which will be treated as token separators:
static const char *delims = " \v\f\t\r\n";
// 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);
+ 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));
+ 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 = newArgv.size ();
- ParseCommandLineOptions (newArgc, &newArgv[0], Overview);
+ ParseCStringVector(newArgv, envValue);
+ int newArgc = newArgv.size();
+ ParseCommandLineOptions(newArgc, &newArgv[0], Overview);
// Free all the strdup()ed strings.
- for (std::vector<char *>::iterator i = newArgv.begin (), e = newArgv.end ();
- i != e; ++i) {
+ for (std::vector<char*>::iterator i = newArgv.begin(), e = newArgv.end();
+ i != e; ++i)
free (*i);
- }
}
/// LookupOption - Lookup the option specified by the specified option on the
/// that as well.
static Option *LookupOption(const char *&Arg, const char *&Value) {
while (*Arg == '-') ++Arg; // Eat leading dashes
-
+
const char *ArgEnd = Arg;
while (*ArgEnd && *ArgEnd != '=')
- ++ArgEnd; // Scan till end of argument name...
+ ++ArgEnd; // Scan till end of argument name.
+
+ if (*ArgEnd == '=') // If we have an equals sign...
+ Value = ArgEnd+1; // Get the value, not the equals
+
- Value = ArgEnd;
- if (*Value) // If we have an equals sign...
- ++Value; // Advance to value...
-
if (*Arg == 0) return 0;
// Look up the option.
- std::map<std::string, Option*> &Opts = getOpts();
+ std::map<std::string, Option*> &Opts = *Options;
std::map<std::string, Option*>::iterator I =
Opts.find(std::string(Arg, ArgEnd));
return (I != Opts.end()) ? I->second : 0;
void cl::ParseCommandLineOptions(int &argc, char **argv,
const char *Overview) {
- assert((!getOpts().empty() || !getPositionalOpts().empty()) &&
+ assert((!Options->empty() || !PositionalOptions->empty()) &&
"No options specified, or ParseCommandLineOptions called more"
" than once!");
- ProgramName = argv[0]; // Save this away safe and snug
+ sys::Path progname(argv[0]);
+
+ // 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;
- std::map<std::string, Option*> &Opts = getOpts();
- std::vector<Option*> &PositionalOpts = getPositionalOpts();
+ std::map<std::string, Option*> &Opts = *Options;
+ std::vector<Option*> &PositionalOpts = *PositionalOptions;
// 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]->getNumOccurrencesFlag() == cl::ConsumeAfter) {
}
UnboundedFound |= EatsUnboundedNumberOfValues(Opt);
}
+ HasUnlimitedPositionals = UnboundedFound || ConsumeAfterOpt;
}
// PositionalVals - A vector of "positional" arguments we accumulate into
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 = "";
// Check to see if this is a positional argument. This argument is
// 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(std::make_pair(argv[i],i));
Handler = LookupOption(ArgName, Value);
// Check to see if this "option" is really a prefixed or grouped argument.
- if (Handler == 0 && *Value == 0) {
+ if (Handler == 0) {
std::string RealName(ArgName);
if (RealName.size() > 1) {
unsigned Length = 0;
Option *PGOpt = getOptionPred(RealName, Length, isPrefixedOrGrouping);
-
+
// 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.
} else if (PGOpt) {
// This must be a grouped option... handle them now.
assert(isGrouping(PGOpt) && "Broken getOptionPred!");
-
+
do {
// Move current arg name out of RealName into RealArgName...
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...
//
"Option can not be cl::Grouping AND cl::ValueRequired!");
int Dummy;
ErrorParsing |= ProvideOption(PGOpt, RealArgName.c_str(),
- "", 0, 0, Dummy);
-
+ 0, 0, 0, Dummy);
+
// Get the next grouping option...
PGOpt = getOptionPred(RealName, Length, isGrouping);
} while (PGOpt && Length != RealName.size());
-
+
Handler = PGOpt; // Ate all of the options.
}
}
}
if (Handler == 0) {
- std::cerr << ProgramName << ": Unknown command line argument '" << argv[i]
- << "'. Try: '" << argv[0] << " --help'\n";
+ cerr << ProgramName << ": Unknown command line argument '"
+ << argv[i] << "'. Try: '" << argv[0] << " --help'\n";
ErrorParsing = true;
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) {
+ if (Value && Handler->getMiscFlags() & CommaSeparated) {
std::string Val(Value);
std::string::size_type Pos = Val.find(',');
// active one...
if (Handler->getFormattingFlag() == cl::Positional)
ActivePositionalArg = Handler;
- else
+ else
ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i);
}
// Check and handle positional arguments now...
if (NumPositionalRequired > PositionalVals.size()) {
- std::cerr << ProgramName
- << ": Not enough positional command line arguments specified!\n"
- << "Must specify at least " << NumPositionalRequired
- << " positional arguments: See: " << argv[0] << " --help\n";
+ cerr << ProgramName
+ << ": Not enough positional command line arguments specified!\n"
+ << "Must specify at least " << NumPositionalRequired
+ << " positional arguments: See: " << argv[0] << " --help\n";
+
+ 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) {
if (RequiresValue(PositionalOpts[i])) {
- ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
+ ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
PositionalVals[ValNo].second);
ValNo++;
--NumPositionalRequired; // We fulfilled our duty...
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)
}
// Loop over args and make sure all required args are specified!
- for (std::map<std::string, Option*>::iterator I = Opts.begin(),
+ for (std::map<std::string, Option*>::iterator I = Opts.begin(),
E = Opts.end(); I != E; ++I) {
switch (I->second->getNumOccurrencesFlag()) {
case Required:
// Free all of the memory allocated to the map. Command line options may only
// be processed once!
- delete CommandLineOptions;
- CommandLineOptions = 0;
+ Opts.clear();
PositionalOpts.clear();
+ MoreHelp->clear();
// If we had an error processing our arguments, don't let the program execute
if (ErrorParsing) exit(1);
bool Option::error(std::string Message, const char *ArgName) {
if (ArgName == 0) ArgName = ArgStr;
if (ArgName[0] == 0)
- std::cerr << HelpStr; // Be nice for positional arguments
+ cerr << HelpStr; // Be nice for positional arguments
else
- std::cerr << ProgramName << ": for the -" << ArgName;
- std::cerr << " option: " << Message << "\n";
+ cerr << ProgramName << ": for the -" << ArgName;
+
+ cerr << " option: " << Message << "\n";
return true;
}
-bool Option::addOccurrence(unsigned pos, const char *ArgName, const std::string &Value) {
+bool Option::addOccurrence(unsigned pos, const char *ArgName,
+ const std::string &Value) {
NumOccurrences++; // Increment the number of times we have been seen
switch (getNumOccurrencesFlag()) {
AddArgument(ArgStr, this);
if (getFormattingFlag() == Positional)
- getPositionalOpts().push_back(this);
+ PositionalOptions->push_back(this);
else if (getNumOccurrencesFlag() == ConsumeAfter) {
- if (!getPositionalOpts().empty() &&
- getPositionalOpts().front()->getNumOccurrencesFlag() == ConsumeAfter)
+ if (!PositionalOptions->empty() &&
+ PositionalOptions->front()->getNumOccurrencesFlag() == ConsumeAfter)
error("Cannot specify more than one option with cl::ConsumeAfter!");
- getPositionalOpts().insert(getPositionalOpts().begin(), this);
+ PositionalOptions->insert(PositionalOptions->begin(), this);
}
}
if (getFormattingFlag() == Positional) {
std::vector<Option*>::iterator I =
- std::find(getPositionalOpts().begin(), getPositionalOpts().end(), this);
- assert(I != getPositionalOpts().end() && "Arg not registered!");
- getPositionalOpts().erase(I);
+ std::find(PositionalOptions->begin(), PositionalOptions->end(), this);
+ assert(I != PositionalOptions->end() && "Arg not registered!");
+ PositionalOptions->erase(I);
} else if (getNumOccurrencesFlag() == ConsumeAfter) {
- assert(!getPositionalOpts().empty() && getPositionalOpts()[0] == this &&
+ assert(!PositionalOptions->empty() && (*PositionalOptions)[0] == this &&
"Arg not registered correctly!");
- getPositionalOpts().erase(getPositionalOpts().begin());
+ PositionalOptions->erase(PositionalOptions->begin());
}
}
return std::strlen(ArgStr)+6;
}
-// Print out the option for the alias...
+// Print out the option for the alias.
void alias::printOptionInfo(unsigned GlobalWidth) const {
unsigned L = std::strlen(ArgStr);
- std::cerr << " -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - "
- << HelpStr << "\n";
+ cout << " -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - "
+ << HelpStr << "\n";
}
return Len + 6;
}
-// printOptionInfo - Print out information about this option. The
+// printOptionInfo - Print out information about this option. The
// to-be-maintained width is specified.
//
void basic_parser_impl::printOptionInfo(const Option &O,
unsigned GlobalWidth) const {
- std::cerr << " -" << O.ArgStr;
+ cout << " -" << O.ArgStr;
if (const char *ValName = getValueName())
- std::cerr << "=<" << getValueStr(O, ValName) << ">";
+ cout << "=<" << getValueStr(O, ValName) << ">";
- std::cerr << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - "
- << O.HelpStr << "\n";
+ cout << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - "
+ << O.HelpStr << "\n";
}
//
bool parser<bool>::parse(Option &O, const char *ArgName,
const std::string &Arg, bool &Value) {
- if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
+ if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
Arg == "1") {
Value = true;
} else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
const std::string &Arg, int &Value) {
char *End;
Value = (int)strtol(Arg.c_str(), &End, 0);
- if (*End != 0)
+ if (*End != 0)
return O.error(": '" + Arg + "' value invalid for integer argument!");
return false;
}
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;
}
}
}
-// 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 {
if (O.hasArgStr()) {
unsigned L = std::strlen(O.ArgStr);
- std::cerr << " -" << O.ArgStr << std::string(GlobalWidth-L-6, ' ')
- << " - " << O.HelpStr << "\n";
+ 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;
- std::cerr << " =" << getOption(i) << std::string(NumSpaces, ' ')
- << " - " << getDescription(i) << "\n";
+ cout << " =" << getOption(i) << std::string(NumSpaces, ' ')
+ << " - " << getDescription(i) << "\n";
}
} else {
if (O.HelpStr[0])
- std::cerr << " " << O.HelpStr << "\n";
+ cout << " " << O.HelpStr << "\n";
for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
unsigned L = std::strlen(getOption(i));
- std::cerr << " -" << getOption(i) << std::string(GlobalWidth-L-8, ' ')
- << " - " << getDescription(i) << "\n";
+ cout << " -" << getOption(i) << std::string(GlobalWidth-L-8, ' ')
+ << " - " << getDescription(i) << "\n";
}
}
}
// --help and --help-hidden option implementation
//
-// If this variable is set, it is a pointer to a function that the user wants
-// us to call after we print out the help info. Basically a hook to allow
-// additional help to be printed.
-static std::vector<const char*>* MoreHelp = 0;
-
-extrahelp::extrahelp(const char* Help)
- : morehelp(Help) {
- if (!MoreHelp) {
- MoreHelp = new std::vector<const char*>;
- }
- MoreHelp->push_back(Help);
-}
-
namespace {
class HelpPrinter {
if (Value == false) return;
// Copy Options into a vector so we can sort them as we like...
- std::vector<std::pair<std::string, Option*> > Options;
- copy(getOpts().begin(), getOpts().end(), std::back_inserter(Options));
+ std::vector<std::pair<std::string, Option*> > Opts;
+ copy(Options->begin(), Options->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)
- std::cerr << "OVERVIEW:" << ProgramOverview << "\n";
+ cout << "OVERVIEW:" << ProgramOverview << "\n";
- std::cerr << "USAGE: " << ProgramName << " [options]";
+ cout << "USAGE: " << ProgramName << " [options]";
- // Print out the positional options...
- std::vector<Option*> &PosOpts = getPositionalOpts();
+ // Print out the positional options.
+ std::vector<Option*> &PosOpts = *PositionalOptions;
Option *CAOpt = 0; // The cl::ConsumeAfter option, if it exists...
if (!PosOpts.empty() && PosOpts[0]->getNumOccurrencesFlag() == ConsumeAfter)
CAOpt = PosOpts[0];
for (unsigned i = CAOpt != 0, e = PosOpts.size(); i != e; ++i) {
if (PosOpts[i]->ArgStr[0])
- std::cerr << " --" << PosOpts[i]->ArgStr;
- std::cerr << " " << PosOpts[i]->HelpStr;
+ cout << " --" << PosOpts[i]->ArgStr;
+ cout << " " << PosOpts[i]->HelpStr;
}
// Print the consume after option info if it exists...
- if (CAOpt) std::cerr << " " << CAOpt->HelpStr;
+ if (CAOpt) cout << " " << CAOpt->HelpStr;
- std::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());
-
- std::cerr << "OPTIONS:\n";
- for (unsigned i = 0, e = Options.size(); i != e; ++i)
- Options[i].second->printOptionInfo(MaxArgLen);
-
- // Print any extra help the user has declared. If MoreHelp is not null,
- // then the user used at least one cl::extrahelp instance to provide
- // additional help. We just print it out now.
- if (MoreHelp != 0) {
- for (std::vector<const char *>::iterator I = MoreHelp->begin(),
- E = MoreHelp->end(); I != E; ++I)
- std::cerr << *I;
- }
+ for (unsigned i = 0, e = Opts.size(); i != e; ++i)
+ MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth());
+
+ cout << "OPTIONS:\n";
+ for (unsigned i = 0, e = Opts.size(); i != e; ++i)
+ Opts[i].second->printOptionInfo(MaxArgLen);
+
+ // 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
+ Options->clear(); // Don't bother making option dtors remove from map.
exit(1);
}
};
+} // End anonymous namespace
+// Define the two HelpPrinter instances that are used to print out help, or
+// help-hidden...
+//
+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);
+
+static cl::opt<HelpPrinter, true, parser<bool> >
+HHOp("help-hidden", cl::desc("Display all available options"),
+ cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed);
+
+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";
+ }
void operator=(bool OptionWasSpecified) {
if (OptionWasSpecified) {
- std::cerr << "Low Level Virtual Machine (" << PACKAGE_NAME << ") "
- << PACKAGE_VERSION << " (see http://llvm.cs.uiuc.edu/)\n";
- exit(1);
+ if (OverrideVersionPrinter == 0) {
+ print();
+ Options->clear(); // Don't bother making option dtors remove from map.
+ exit(1);
+ } else {
+ (*OverrideVersionPrinter)();
+ 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);
-
-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> >
-HHOp("help-hidden", cl::desc("display all available options"),
- cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed);
-
// Define the --version option that prints out the LLVM version for the tool
-VersionPrinter VersionPrinterInstance;
-cl::opt<VersionPrinter, true, parser<bool> >
-VersOp("version", cl::desc("display the version"),
- cl::location(VersionPrinterInstance), cl::ValueDisallowed);
-
+static VersionPrinter VersionPrinterInstance;
-} // End anonymous namespace
+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