CommandLine.cpp revision 5f8448f79c2876466d586f2e1caec89e6f070623
1dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner//===-- CommandLine.cpp - Command line parser implementation --------------===// 2b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// 3b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// The LLVM Compiler Infrastructure 4b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// 5b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// This file was developed by the LLVM research group and is distributed under 6b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// the University of Illinois Open Source License. See LICENSE.TXT for details. 7b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// 8b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell//===----------------------------------------------------------------------===// 9dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 10dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// This class implements a command line argument processor that is useful when 11dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// creating a tool. It provides a simple, minimalistic interface that is easily 12dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// extensible and supports nonlocal (library) command line options. 13dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 1403fe1bd149b21855098e9cc9f959c8e8ca80693cChris Lattner// Note that rather than trying to figure out what this code does, you could try 1503fe1bd149b21855098e9cc9f959c8e8ca80693cChris Lattner// reading the library documentation located in docs/CommandLine.html 1603fe1bd149b21855098e9cc9f959c8e8ca80693cChris Lattner// 17dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner//===----------------------------------------------------------------------===// 18dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 19551ccae044b0ff658fe629dd67edd5ffe75d10e8Reid Spencer#include "llvm/Config/config.h" 20551ccae044b0ff658fe629dd67edd5ffe75d10e8Reid Spencer#include "llvm/Support/CommandLine.h" 21dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner#include <algorithm> 22dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner#include <map> 23dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner#include <set> 24697954c15da58bd8b186dbafdedd8b06db770201Chris Lattner#include <iostream> 252d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke#include <cstdlib> 262d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke#include <cerrno> 275114004110d771e2cc838be569207784f2519010Chris Lattner#include <cstring> 282cdd21c2e4d855500dfb53f77aa74da53ccf9de6Chris Lattnerusing namespace llvm; 29d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 30dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattnerusing namespace cl; 31dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 32e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer// Globals for name and overview of program 33e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencerstatic const char *ProgramName = "<unknown>"; 34e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencerstatic const char *ProgramOverview = 0; 35e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer 36c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner// This collects additional help to be printed. 37c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattnerstatic std::vector<const char*> &MoreHelp() { 38c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner static std::vector<const char*> moreHelp; 39c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner return moreHelp; 40c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner} 41c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner 42c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattnerextrahelp::extrahelp(const char* Help) 43c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner : morehelp(Help) { 44c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner MoreHelp().push_back(Help); 45c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner} 46c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner 47331de23705a719514e37c211f327379688f81b0dChris Lattner//===----------------------------------------------------------------------===// 48331de23705a719514e37c211f327379688f81b0dChris Lattner// Basic, shared command line option processing machinery... 49331de23705a719514e37c211f327379688f81b0dChris Lattner// 50331de23705a719514e37c211f327379688f81b0dChris Lattner 51dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// Return the global command line option vector. Making it a function scoped 52f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner// static ensures that it will be initialized correctly before its first use. 53dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 54ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattnerstatic std::map<std::string, Option*> &getOpts() { 55c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner static std::map<std::string, Option*> CommandLineOptions; 56c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner return CommandLineOptions; 57e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner} 58e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner 59ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattnerstatic Option *getOption(const std::string &Str) { 60c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner std::map<std::string,Option*>::iterator I = getOpts().find(Str); 61c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner return I != getOpts().end() ? I->second : 0; 62dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 63dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 64ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattnerstatic std::vector<Option*> &getPositionalOpts() { 65c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner static std::vector<Option*> Positional; 66c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner return Positional; 67331de23705a719514e37c211f327379688f81b0dChris Lattner} 68331de23705a719514e37c211f327379688f81b0dChris Lattner 69e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattnerstatic void AddArgument(const char *ArgName, Option *Opt) { 70e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner if (getOption(ArgName)) { 71e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer std::cerr << ProgramName << ": CommandLine Error: Argument '" 72e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer << ArgName << "' defined more than once!\n"; 73dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } else { 74f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner // Add argument to the argument map! 75e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner getOpts()[ArgName] = Opt; 76e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner } 77e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner} 78e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner 79e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner// RemoveArgument - It's possible that the argument is no longer in the map if 80e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner// options have already been processed and the map has been deleted! 81e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner// 82e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattnerstatic void RemoveArgument(const char *ArgName, Option *Opt) { 83c4ae8e903c6abd7e391e8a16f8e850073342ca4dTanya Lattner if(getOpts().empty()) return; 84c4ae8e903c6abd7e391e8a16f8e850073342ca4dTanya Lattner 85f98cfc716d1916e3400d8980c972f75fe47b9061Chris Lattner#ifndef NDEBUG 86f98cfc716d1916e3400d8980c972f75fe47b9061Chris Lattner // This disgusting HACK is brought to you courtesy of GCC 3.3.2, which ICE's 87f98cfc716d1916e3400d8980c972f75fe47b9061Chris Lattner // If we pass ArgName directly into getOption here. 88f98cfc716d1916e3400d8980c972f75fe47b9061Chris Lattner std::string Tmp = ArgName; 89f98cfc716d1916e3400d8980c972f75fe47b9061Chris Lattner assert(getOption(Tmp) == Opt && "Arg not in map!"); 90f98cfc716d1916e3400d8980c972f75fe47b9061Chris Lattner#endif 91c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner getOpts().erase(ArgName); 92dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 93dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 94caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattnerstatic inline bool ProvideOption(Option *Handler, const char *ArgName, 95caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner const char *Value, int argc, char **argv, 96caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner int &i) { 97caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner // Enforce value requirements 98caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner switch (Handler->getValueExpectedFlag()) { 99caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner case ValueRequired: 100caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner if (Value == 0 || *Value == 0) { // No value specified? 101caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner if (i+1 < argc) { // Steal the next argument, like for '-o filename' 102caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner Value = argv[++i]; 103caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner } else { 104caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner return Handler->error(" requires a value!"); 105caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner } 106caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner } 107caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner break; 108caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner case ValueDisallowed: 109caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner if (*Value != 0) 110caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner return Handler->error(" does not allow a value! '" + 111ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::string(Value) + "' specified."); 112caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner break; 113e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer case ValueOptional: 114e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer break; 115e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer default: 116e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer std::cerr << ProgramName 117e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer << ": Bad ValueMask flag! CommandLine usage error:" 118e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer << Handler->getValueExpectedFlag() << "\n"; 119e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer abort(); 120e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer break; 121caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner } 122caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner 123caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner // Run the handler now! 1241e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer return Handler->addOccurrence(i, ArgName, Value); 125caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner} 126caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner 1271e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencerstatic bool ProvidePositionalOption(Option *Handler, const std::string &Arg, 1281e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer int i) { 1291e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer int Dummy = i; 1309cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner return ProvideOption(Handler, Handler->ArgStr, Arg.c_str(), 0, 0, Dummy); 131331de23705a719514e37c211f327379688f81b0dChris Lattner} 132331de23705a719514e37c211f327379688f81b0dChris Lattner 133331de23705a719514e37c211f327379688f81b0dChris Lattner 134331de23705a719514e37c211f327379688f81b0dChris Lattner// Option predicates... 135331de23705a719514e37c211f327379688f81b0dChris Lattnerstatic inline bool isGrouping(const Option *O) { 136331de23705a719514e37c211f327379688f81b0dChris Lattner return O->getFormattingFlag() == cl::Grouping; 137331de23705a719514e37c211f327379688f81b0dChris Lattner} 138331de23705a719514e37c211f327379688f81b0dChris Lattnerstatic inline bool isPrefixedOrGrouping(const Option *O) { 139331de23705a719514e37c211f327379688f81b0dChris Lattner return isGrouping(O) || O->getFormattingFlag() == cl::Prefix; 140331de23705a719514e37c211f327379688f81b0dChris Lattner} 141331de23705a719514e37c211f327379688f81b0dChris Lattner 142331de23705a719514e37c211f327379688f81b0dChris Lattner// getOptionPred - Check to see if there are any options that satisfy the 143331de23705a719514e37c211f327379688f81b0dChris Lattner// specified predicate with names that are the prefixes in Name. This is 144331de23705a719514e37c211f327379688f81b0dChris Lattner// checked by progressively stripping characters off of the name, checking to 145331de23705a719514e37c211f327379688f81b0dChris Lattner// see if there options that satisfy the predicate. If we find one, return it, 146331de23705a719514e37c211f327379688f81b0dChris Lattner// otherwise return null. 147f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner// 148331de23705a719514e37c211f327379688f81b0dChris Lattnerstatic Option *getOptionPred(std::string Name, unsigned &Length, 149331de23705a719514e37c211f327379688f81b0dChris Lattner bool (*Pred)(const Option*)) { 150331de23705a719514e37c211f327379688f81b0dChris Lattner 151e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner Option *Op = getOption(Name); 152e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner if (Op && Pred(Op)) { 153331de23705a719514e37c211f327379688f81b0dChris Lattner Length = Name.length(); 154e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner return Op; 155331de23705a719514e37c211f327379688f81b0dChris Lattner } 156f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner 157331de23705a719514e37c211f327379688f81b0dChris Lattner if (Name.size() == 1) return 0; 158331de23705a719514e37c211f327379688f81b0dChris Lattner do { 159331de23705a719514e37c211f327379688f81b0dChris Lattner Name.erase(Name.end()-1, Name.end()); // Chop off the last character... 160e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner Op = getOption(Name); 161331de23705a719514e37c211f327379688f81b0dChris Lattner 162331de23705a719514e37c211f327379688f81b0dChris Lattner // Loop while we haven't found an option and Name still has at least two 163331de23705a719514e37c211f327379688f81b0dChris Lattner // characters in it (so that the next iteration will not be the empty 164331de23705a719514e37c211f327379688f81b0dChris Lattner // string... 165e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner } while ((Op == 0 || !Pred(Op)) && Name.size() > 1); 166331de23705a719514e37c211f327379688f81b0dChris Lattner 167e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner if (Op && Pred(Op)) { 168331de23705a719514e37c211f327379688f81b0dChris Lattner Length = Name.length(); 169e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner return Op; // Found one! 170f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner } 171331de23705a719514e37c211f327379688f81b0dChris Lattner return 0; // No option found! 172331de23705a719514e37c211f327379688f81b0dChris Lattner} 173f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner 174331de23705a719514e37c211f327379688f81b0dChris Lattnerstatic bool RequiresValue(const Option *O) { 175dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman return O->getNumOccurrencesFlag() == cl::Required || 176dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman O->getNumOccurrencesFlag() == cl::OneOrMore; 177331de23705a719514e37c211f327379688f81b0dChris Lattner} 178331de23705a719514e37c211f327379688f81b0dChris Lattner 179331de23705a719514e37c211f327379688f81b0dChris Lattnerstatic bool EatsUnboundedNumberOfValues(const Option *O) { 180dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman return O->getNumOccurrencesFlag() == cl::ZeroOrMore || 181dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman O->getNumOccurrencesFlag() == cl::OneOrMore; 182f78032fe064bdd2b9a19b875261747b7d0a27a73Chris Lattner} 183caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner 184c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke/// ParseCStringVector - Break INPUT up wherever one or more 185c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke/// whitespace characters are found, and store the resulting tokens in 186c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke/// OUTPUT. The tokens stored in OUTPUT are dynamically allocated 187c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke/// using strdup (), so it is the caller's responsibility to free () 188c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke/// them later. 18906b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke/// 190c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaekestatic void ParseCStringVector (std::vector<char *> &output, 19169105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer const char *input) { 192c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Characters which will be treated as token separators: 193c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke static const char *delims = " \v\f\t\r\n"; 194c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke 19506b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke std::string work (input); 196c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Skip past any delims at head of input string. 197c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke size_t pos = work.find_first_not_of (delims); 198c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // If the string consists entirely of delims, then exit early. 199c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke if (pos == std::string::npos) return; 200c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Otherwise, jump forward to beginning of first word. 20106b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke work = work.substr (pos); 202c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Find position of first delimiter. 20306b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke pos = work.find_first_of (delims); 204c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke 205c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke while (!work.empty() && pos != std::string::npos) { 206c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Everything from 0 to POS is the next word to copy. 207c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke output.push_back (strdup (work.substr (0,pos).c_str ())); 208c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Is there another word in the string? 209c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke size_t nextpos = work.find_first_not_of (delims, pos + 1); 210c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke if (nextpos != std::string::npos) { 211c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Yes? Then remove delims from beginning ... 21206b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke work = work.substr (work.find_first_not_of (delims, pos + 1)); 213c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // and find the end of the word. 21406b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke pos = work.find_first_of (delims); 21506b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke } else { 216c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // No? (Remainder of string is delims.) End the loop. 21706b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke work = ""; 218c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke pos = std::string::npos; 21906b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke } 22006b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke } 22106b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke 222c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // If `input' ended with non-delim char, then we'll get here with 223c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // the last word of `input' in `work'; copy it now. 224c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke if (!work.empty ()) { 225c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke output.push_back (strdup (work.c_str ())); 22606b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke } 22706b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke} 22806b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke 22906b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke/// ParseEnvironmentOptions - An alternative entry point to the 23006b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke/// CommandLine library, which allows you to read the program's name 23106b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke/// from the caller (as PROGNAME) and its command-line arguments from 23206b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke/// an environment variable (whose name is given in ENVVAR). 23306b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke/// 234bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattnervoid cl::ParseEnvironmentOptions(const char *progName, const char *envVar, 235bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner const char *Overview) { 236c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Check args. 237bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner assert(progName && "Program name not specified"); 238bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner assert(envVar && "Environment variable name missing"); 239c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke 24006b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke // Get the environment variable they want us to parse options out of. 241c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke const char *envValue = getenv (envVar); 242c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke if (!envValue) 24306b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke return; 244c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke 245c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Get program's "name", which we wouldn't know without the caller 246c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // telling us. 247c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke std::vector<char *> newArgv; 248c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke newArgv.push_back (strdup (progName)); 24906b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke 25006b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke // Parse the value of the environment variable into a "command line" 25106b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke // and hand it off to ParseCommandLineOptions(). 252c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke ParseCStringVector (newArgv, envValue); 253c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke int newArgc = newArgv.size (); 254c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke ParseCommandLineOptions (newArgc, &newArgv[0], Overview); 255c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke 256c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke // Free all the strdup()ed strings. 257c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke for (std::vector<char *>::iterator i = newArgv.begin (), e = newArgv.end (); 258c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke i != e; ++i) { 259c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke free (*i); 260c48ef2ae36e2169872a828a5399ccd1993837915Brian Gaeke } 26106b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke} 26206b06c5f00acffdab8c59e3dc5baca3eacca172aBrian Gaeke 263bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner/// LookupOption - Lookup the option specified by the specified option on the 264bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner/// command line. If there is a value specified (after an equal sign) return 265bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner/// that as well. 266bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattnerstatic Option *LookupOption(const char *&Arg, const char *&Value) { 267bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner while (*Arg == '-') ++Arg; // Eat leading dashes 268bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 269bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner const char *ArgEnd = Arg; 270bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner while (*ArgEnd && *ArgEnd != '=') 271bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner ++ArgEnd; // Scan till end of argument name... 272bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 273bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Value = ArgEnd; 274bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner if (*Value) // If we have an equals sign... 275bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner ++Value; // Advance to value... 276bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 277bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner if (*Arg == 0) return 0; 278bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 279bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner // Look up the option. 280bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner std::map<std::string, Option*> &Opts = getOpts(); 281bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner std::map<std::string, Option*>::iterator I = 282bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Opts.find(std::string(Arg, ArgEnd)); 283bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner return (I != Opts.end()) ? I->second : 0; 284bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner} 285bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 286dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattnervoid cl::ParseCommandLineOptions(int &argc, char **argv, 2870c0edf8afc35a42b15a24ebb5fa5f3fc674290aeChris Lattner const char *Overview) { 288331de23705a719514e37c211f327379688f81b0dChris Lattner assert((!getOpts().empty() || !getPositionalOpts().empty()) && 289331de23705a719514e37c211f327379688f81b0dChris Lattner "No options specified, or ParseCommandLineOptions called more" 290331de23705a719514e37c211f327379688f81b0dChris Lattner " than once!"); 291dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner ProgramName = argv[0]; // Save this away safe and snug 292dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner ProgramOverview = Overview; 293dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner bool ErrorParsing = false; 294dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 295ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::map<std::string, Option*> &Opts = getOpts(); 296ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::vector<Option*> &PositionalOpts = getPositionalOpts(); 297331de23705a719514e37c211f327379688f81b0dChris Lattner 298331de23705a719514e37c211f327379688f81b0dChris Lattner // Check out the positional arguments to collect information about them. 299331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned NumPositionalRequired = 0; 300331de23705a719514e37c211f327379688f81b0dChris Lattner Option *ConsumeAfterOpt = 0; 301331de23705a719514e37c211f327379688f81b0dChris Lattner if (!PositionalOpts.empty()) { 302dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman if (PositionalOpts[0]->getNumOccurrencesFlag() == cl::ConsumeAfter) { 303331de23705a719514e37c211f327379688f81b0dChris Lattner assert(PositionalOpts.size() > 1 && 304331de23705a719514e37c211f327379688f81b0dChris Lattner "Cannot specify cl::ConsumeAfter without a positional argument!"); 305331de23705a719514e37c211f327379688f81b0dChris Lattner ConsumeAfterOpt = PositionalOpts[0]; 306331de23705a719514e37c211f327379688f81b0dChris Lattner } 307331de23705a719514e37c211f327379688f81b0dChris Lattner 308331de23705a719514e37c211f327379688f81b0dChris Lattner // Calculate how many positional values are _required_. 309331de23705a719514e37c211f327379688f81b0dChris Lattner bool UnboundedFound = false; 310331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = ConsumeAfterOpt != 0, e = PositionalOpts.size(); 311331de23705a719514e37c211f327379688f81b0dChris Lattner i != e; ++i) { 312331de23705a719514e37c211f327379688f81b0dChris Lattner Option *Opt = PositionalOpts[i]; 313331de23705a719514e37c211f327379688f81b0dChris Lattner if (RequiresValue(Opt)) 314331de23705a719514e37c211f327379688f81b0dChris Lattner ++NumPositionalRequired; 315331de23705a719514e37c211f327379688f81b0dChris Lattner else if (ConsumeAfterOpt) { 316331de23705a719514e37c211f327379688f81b0dChris Lattner // ConsumeAfter cannot be combined with "optional" positional options 31754ec7aed89e4a5d8cc11c36999d88012cbfcc18aChris Lattner // unless there is only one positional argument... 31854ec7aed89e4a5d8cc11c36999d88012cbfcc18aChris Lattner if (PositionalOpts.size() > 2) 31954ec7aed89e4a5d8cc11c36999d88012cbfcc18aChris Lattner ErrorParsing |= 32054ec7aed89e4a5d8cc11c36999d88012cbfcc18aChris Lattner Opt->error(" error - this positional option will never be matched, " 32154ec7aed89e4a5d8cc11c36999d88012cbfcc18aChris Lattner "because it does not Require a value, and a " 32254ec7aed89e4a5d8cc11c36999d88012cbfcc18aChris Lattner "cl::ConsumeAfter option is active!"); 3239cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner } else if (UnboundedFound && !Opt->ArgStr[0]) { 3249cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // This option does not "require" a value... Make sure this option is 3259cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // not specified after an option that eats all extra arguments, or this 3269cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // one will never get any! 327331de23705a719514e37c211f327379688f81b0dChris Lattner // 328331de23705a719514e37c211f327379688f81b0dChris Lattner ErrorParsing |= Opt->error(" error - option can never match, because " 329331de23705a719514e37c211f327379688f81b0dChris Lattner "another positional argument will match an " 330331de23705a719514e37c211f327379688f81b0dChris Lattner "unbounded number of values, and this option" 331331de23705a719514e37c211f327379688f81b0dChris Lattner " does not require a value!"); 332331de23705a719514e37c211f327379688f81b0dChris Lattner } 333331de23705a719514e37c211f327379688f81b0dChris Lattner UnboundedFound |= EatsUnboundedNumberOfValues(Opt); 334331de23705a719514e37c211f327379688f81b0dChris Lattner } 335331de23705a719514e37c211f327379688f81b0dChris Lattner } 336331de23705a719514e37c211f327379688f81b0dChris Lattner 3371e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer // PositionalVals - A vector of "positional" arguments we accumulate into 3381e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer // the process at the end... 339331de23705a719514e37c211f327379688f81b0dChris Lattner // 3401e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer std::vector<std::pair<std::string,unsigned> > PositionalVals; 341331de23705a719514e37c211f327379688f81b0dChris Lattner 3429cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // If the program has named positional arguments, and the name has been run 3439cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // across, keep track of which positional argument was named. Otherwise put 3449cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // the positional args into the PositionalVals list... 3459cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner Option *ActivePositionalArg = 0; 3469cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner 347dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // Loop over all of the arguments... processing them. 348331de23705a719514e37c211f327379688f81b0dChris Lattner bool DashDashFound = false; // Have we read '--'? 349dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner for (int i = 1; i < argc; ++i) { 350dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner Option *Handler = 0; 351dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner const char *Value = ""; 352dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner const char *ArgName = ""; 353331de23705a719514e37c211f327379688f81b0dChris Lattner 354331de23705a719514e37c211f327379688f81b0dChris Lattner // Check to see if this is a positional argument. This argument is 355331de23705a719514e37c211f327379688f81b0dChris Lattner // considered to be positional if it doesn't start with '-', if it is "-" 3561115e0483fc6da16d52382f159005baddf028063Misha Brukman // itself, or if we have seen "--" already. 357331de23705a719514e37c211f327379688f81b0dChris Lattner // 358331de23705a719514e37c211f327379688f81b0dChris Lattner if (argv[i][0] != '-' || argv[i][1] == 0 || DashDashFound) { 359331de23705a719514e37c211f327379688f81b0dChris Lattner // Positional argument! 3609cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (ActivePositionalArg) { 3611e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ProvidePositionalOption(ActivePositionalArg, argv[i], i); 3629cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner continue; // We are done! 3639cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner } else if (!PositionalOpts.empty()) { 3641e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals.push_back(std::make_pair(argv[i],i)); 365331de23705a719514e37c211f327379688f81b0dChris Lattner 366331de23705a719514e37c211f327379688f81b0dChris Lattner // All of the positional arguments have been fulfulled, give the rest to 367331de23705a719514e37c211f327379688f81b0dChris Lattner // the consume after option... if it's specified... 368331de23705a719514e37c211f327379688f81b0dChris Lattner // 369d16714b5ed076d0c1d14543098c1e9b90fd92a38Chris Lattner if (PositionalVals.size() >= NumPositionalRequired && 370331de23705a719514e37c211f327379688f81b0dChris Lattner ConsumeAfterOpt != 0) { 371331de23705a719514e37c211f327379688f81b0dChris Lattner for (++i; i < argc; ++i) 3721e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals.push_back(std::make_pair(argv[i],i)); 373331de23705a719514e37c211f327379688f81b0dChris Lattner break; // Handle outside of the argument processing loop... 374331de23705a719514e37c211f327379688f81b0dChris Lattner } 375331de23705a719514e37c211f327379688f81b0dChris Lattner 376331de23705a719514e37c211f327379688f81b0dChris Lattner // Delay processing positional arguments until the end... 377331de23705a719514e37c211f327379688f81b0dChris Lattner continue; 378331de23705a719514e37c211f327379688f81b0dChris Lattner } 379bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner } else if (argv[i][0] == '-' && argv[i][1] == '-' && argv[i][2] == 0 && 380bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner !DashDashFound) { 381bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner DashDashFound = true; // This is the mythical "--"? 382bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner continue; // Don't try to process it as an argument itself. 383bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner } else if (ActivePositionalArg && 384bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner (ActivePositionalArg->getMiscFlags() & PositionalEatsArgs)) { 385bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner // If there is a positional argument eating options, check to see if this 386bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner // option is another positional argument. If so, treat it as an argument, 387bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner // otherwise feed it to the eating positional. 388dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner ArgName = argv[i]+1; 389bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Handler = LookupOption(ArgName, Value); 390bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner if (!Handler || Handler->getFormattingFlag() != cl::Positional) { 3911e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ProvidePositionalOption(ActivePositionalArg, argv[i], i); 392bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner continue; // We are done! 393331de23705a719514e37c211f327379688f81b0dChris Lattner } 394331de23705a719514e37c211f327379688f81b0dChris Lattner 395bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner } else { // We start with a '-', must be an argument... 396bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner ArgName = argv[i]+1; 397bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Handler = LookupOption(ArgName, Value); 398331de23705a719514e37c211f327379688f81b0dChris Lattner 399bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner // Check to see if this "option" is really a prefixed or grouped argument. 4005f8448f79c2876466d586f2e1caec89e6f070623Reid Spencer if (Handler == 0) { 401bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner std::string RealName(ArgName); 402bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner if (RealName.size() > 1) { 403331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned Length = 0; 404331de23705a719514e37c211f327379688f81b0dChris Lattner Option *PGOpt = getOptionPred(RealName, Length, isPrefixedOrGrouping); 405bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 406331de23705a719514e37c211f327379688f81b0dChris Lattner // If the option is a prefixed option, then the value is simply the 407331de23705a719514e37c211f327379688f81b0dChris Lattner // rest of the name... so fall through to later processing, by 408331de23705a719514e37c211f327379688f81b0dChris Lattner // setting up the argument name flags and value fields. 409331de23705a719514e37c211f327379688f81b0dChris Lattner // 410331de23705a719514e37c211f327379688f81b0dChris Lattner if (PGOpt && PGOpt->getFormattingFlag() == cl::Prefix) { 411bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Value = ArgName+Length; 412bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner assert(Opts.find(std::string(ArgName, Value)) != Opts.end() && 413bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Opts.find(std::string(ArgName, Value))->second == PGOpt); 414bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Handler = PGOpt; 415331de23705a719514e37c211f327379688f81b0dChris Lattner } else if (PGOpt) { 416bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner // This must be a grouped option... handle them now. 417331de23705a719514e37c211f327379688f81b0dChris Lattner assert(isGrouping(PGOpt) && "Broken getOptionPred!"); 418bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 419331de23705a719514e37c211f327379688f81b0dChris Lattner do { 420331de23705a719514e37c211f327379688f81b0dChris Lattner // Move current arg name out of RealName into RealArgName... 421bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner std::string RealArgName(RealName.begin(), 422bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner RealName.begin() + Length); 423bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner RealName.erase(RealName.begin(), RealName.begin() + Length); 424bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 425b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman // Because ValueRequired is an invalid flag for grouped arguments, 426b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman // we don't need to pass argc/argv in... 427b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman // 428331de23705a719514e37c211f327379688f81b0dChris Lattner assert(PGOpt->getValueExpectedFlag() != cl::ValueRequired && 429331de23705a719514e37c211f327379688f81b0dChris Lattner "Option can not be cl::Grouping AND cl::ValueRequired!"); 430331de23705a719514e37c211f327379688f81b0dChris Lattner int Dummy; 431bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner ErrorParsing |= ProvideOption(PGOpt, RealArgName.c_str(), 432bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner "", 0, 0, Dummy); 433bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 434331de23705a719514e37c211f327379688f81b0dChris Lattner // Get the next grouping option... 435bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner PGOpt = getOptionPred(RealName, Length, isGrouping); 436bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner } while (PGOpt && Length != RealName.size()); 437bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner 438bf455c236001d5424dbda50fd145352f87f11ec1Chris Lattner Handler = PGOpt; // Ate all of the options. 439331de23705a719514e37c211f327379688f81b0dChris Lattner } 440b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman } 441dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 442dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 443dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 444dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner if (Handler == 0) { 445e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer std::cerr << ProgramName << ": Unknown command line argument '" << argv[i] 446e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer << "'. Try: '" << argv[0] << " --help'\n"; 447dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner ErrorParsing = true; 448dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner continue; 449dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 450dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 45172fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner // Check to see if this option accepts a comma separated list of values. If 45272fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner // it does, we have to split up the value into multiple values... 45372fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner if (Handler->getMiscFlags() & CommaSeparated) { 45472fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner std::string Val(Value); 45572fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner std::string::size_type Pos = Val.find(','); 45672fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner 45772fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner while (Pos != std::string::npos) { 45872fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner // Process the portion before the comma... 45972fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner ErrorParsing |= ProvideOption(Handler, ArgName, 46072fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner std::string(Val.begin(), 46172fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner Val.begin()+Pos).c_str(), 46272fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner argc, argv, i); 46372fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner // Erase the portion before the comma, AND the comma... 46472fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner Val.erase(Val.begin(), Val.begin()+Pos+1); 46572fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner Value += Pos+1; // Increment the original value pointer as well... 46672fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner 46772fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner // Check for another comma... 46872fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner Pos = Val.find(','); 46972fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner } 47072fb8e50820f6fcccae3a63935653ccd7b9ecf84Chris Lattner } 4719cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner 4729cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // If this is a named positional argument, just remember that it is the 4739cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner // active one... 4749cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (Handler->getFormattingFlag() == cl::Positional) 4759cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner ActivePositionalArg = Handler; 4769cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner else 4779cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i); 478331de23705a719514e37c211f327379688f81b0dChris Lattner } 479dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 480331de23705a719514e37c211f327379688f81b0dChris Lattner // Check and handle positional arguments now... 481331de23705a719514e37c211f327379688f81b0dChris Lattner if (NumPositionalRequired > PositionalVals.size()) { 482e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer std::cerr << ProgramName 483e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer << ": Not enough positional command line arguments specified!\n" 484ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << "Must specify at least " << NumPositionalRequired 485ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << " positional arguments: See: " << argv[0] << " --help\n"; 486331de23705a719514e37c211f327379688f81b0dChris Lattner ErrorParsing = true; 487331de23705a719514e37c211f327379688f81b0dChris Lattner 488331de23705a719514e37c211f327379688f81b0dChris Lattner 489331de23705a719514e37c211f327379688f81b0dChris Lattner } else if (ConsumeAfterOpt == 0) { 490331de23705a719514e37c211f327379688f81b0dChris Lattner // Positional args have already been handled if ConsumeAfter is specified... 491331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned ValNo = 0, NumVals = PositionalVals.size(); 492331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = PositionalOpts.size(); i != e; ++i) { 493331de23705a719514e37c211f327379688f81b0dChris Lattner if (RequiresValue(PositionalOpts[i])) { 4941e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first, 4951e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].second); 4961e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ValNo++; 497331de23705a719514e37c211f327379688f81b0dChris Lattner --NumPositionalRequired; // We fulfilled our duty... 498331de23705a719514e37c211f327379688f81b0dChris Lattner } 499331de23705a719514e37c211f327379688f81b0dChris Lattner 500331de23705a719514e37c211f327379688f81b0dChris Lattner // If we _can_ give this option more arguments, do so now, as long as we 501331de23705a719514e37c211f327379688f81b0dChris Lattner // do not give it values that others need. 'Done' controls whether the 502331de23705a719514e37c211f327379688f81b0dChris Lattner // option even _WANTS_ any more. 503331de23705a719514e37c211f327379688f81b0dChris Lattner // 504dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman bool Done = PositionalOpts[i]->getNumOccurrencesFlag() == cl::Required; 505331de23705a719514e37c211f327379688f81b0dChris Lattner while (NumVals-ValNo > NumPositionalRequired && !Done) { 506dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman switch (PositionalOpts[i]->getNumOccurrencesFlag()) { 507331de23705a719514e37c211f327379688f81b0dChris Lattner case cl::Optional: 508331de23705a719514e37c211f327379688f81b0dChris Lattner Done = true; // Optional arguments want _at most_ one value 509331de23705a719514e37c211f327379688f81b0dChris Lattner // FALL THROUGH 510331de23705a719514e37c211f327379688f81b0dChris Lattner case cl::ZeroOrMore: // Zero or more will take all they can get... 511331de23705a719514e37c211f327379688f81b0dChris Lattner case cl::OneOrMore: // One or more will take all they can get... 5121e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ProvidePositionalOption(PositionalOpts[i], 5131e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].first, 5141e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].second); 5151e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ValNo++; 516331de23705a719514e37c211f327379688f81b0dChris Lattner break; 517331de23705a719514e37c211f327379688f81b0dChris Lattner default: 518dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman assert(0 && "Internal error, unexpected NumOccurrences flag in " 519331de23705a719514e37c211f327379688f81b0dChris Lattner "positional argument processing!"); 520331de23705a719514e37c211f327379688f81b0dChris Lattner } 521331de23705a719514e37c211f327379688f81b0dChris Lattner } 522caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner } 523331de23705a719514e37c211f327379688f81b0dChris Lattner } else { 524331de23705a719514e37c211f327379688f81b0dChris Lattner assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size()); 525331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned ValNo = 0; 526331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned j = 1, e = PositionalOpts.size(); j != e; ++j) 5271e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer if (RequiresValue(PositionalOpts[j])) { 528faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner ErrorParsing |= ProvidePositionalOption(PositionalOpts[j], 5291e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].first, 5301e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].second); 5311e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ValNo++; 5321e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer } 533faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner 534faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner // Handle the case where there is just one positional option, and it's 535faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner // optional. In this case, we want to give JUST THE FIRST option to the 536faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner // positional option and keep the rest for the consume after. The above 537faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner // loop would have assigned no values to positional options in this case. 538faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner // 5391e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer if (PositionalOpts.size() == 2 && ValNo == 0 && !PositionalVals.empty()) { 540faba809472e36fbb28394da6ed907d2652ca8b83Chris Lattner ErrorParsing |= ProvidePositionalOption(PositionalOpts[1], 5411e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].first, 5421e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].second); 5431e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer ValNo++; 5441e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer } 545331de23705a719514e37c211f327379688f81b0dChris Lattner 546331de23705a719514e37c211f327379688f81b0dChris Lattner // Handle over all of the rest of the arguments to the 547331de23705a719514e37c211f327379688f81b0dChris Lattner // cl::ConsumeAfter command line option... 548331de23705a719514e37c211f327379688f81b0dChris Lattner for (; ValNo != PositionalVals.size(); ++ValNo) 549331de23705a719514e37c211f327379688f81b0dChris Lattner ErrorParsing |= ProvidePositionalOption(ConsumeAfterOpt, 5501e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].first, 5511e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer PositionalVals[ValNo].second); 552dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 553dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 554dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner // Loop over args and make sure all required args are specified! 555ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner for (std::map<std::string, Option*>::iterator I = Opts.begin(), 556b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman E = Opts.end(); I != E; ++I) { 557dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman switch (I->second->getNumOccurrencesFlag()) { 558dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner case Required: 559dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner case OneOrMore: 560dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman if (I->second->getNumOccurrences() == 0) { 561b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman I->second->error(" must be specified at least once!"); 562f038acbee21cfed998451aedd00a81901d299516Chris Lattner ErrorParsing = true; 563f038acbee21cfed998451aedd00a81901d299516Chris Lattner } 564dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner // Fall through 565dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner default: 566dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner break; 567dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner } 568dc4693dbcf164ec404a3a91c67cf1dbe5f45a8e5Chris Lattner } 569dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 570331de23705a719514e37c211f327379688f81b0dChris Lattner // Free all of the memory allocated to the map. Command line options may only 571331de23705a719514e37c211f327379688f81b0dChris Lattner // be processed once! 572c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner getOpts().clear(); 573331de23705a719514e37c211f327379688f81b0dChris Lattner PositionalOpts.clear(); 574c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner MoreHelp().clear(); 575dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 576dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // If we had an error processing our arguments, don't let the program execute 577dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner if (ErrorParsing) exit(1); 578dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 579dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 580dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner//===----------------------------------------------------------------------===// 581dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// Option Base class implementation 582dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 583dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 584ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattnerbool Option::error(std::string Message, const char *ArgName) { 585dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner if (ArgName == 0) ArgName = ArgStr; 586331de23705a719514e37c211f327379688f81b0dChris Lattner if (ArgName[0] == 0) 587ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << HelpStr; // Be nice for positional arguments 588331de23705a719514e37c211f327379688f81b0dChris Lattner else 589e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer std::cerr << ProgramName << ": for the -" << ArgName; 590e1cc150a8e6b451e42b04b04ffb41596e01bbef5Reid Spencer std::cerr << " option: " << Message << "\n"; 591dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner return true; 592dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 593dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 5941e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencerbool Option::addOccurrence(unsigned pos, const char *ArgName, const std::string &Value) { 595dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman NumOccurrences++; // Increment the number of times we have been seen 596dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 597dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman switch (getNumOccurrencesFlag()) { 598dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner case Optional: 599dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman if (NumOccurrences > 1) 600dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner return error(": may only occur zero or one times!", ArgName); 601dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner break; 602dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner case Required: 603dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman if (NumOccurrences > 1) 604dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner return error(": must occur exactly one time!", ArgName); 605dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // Fall through 606dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner case OneOrMore: 607caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner case ZeroOrMore: 608caccd761a6320d9068a44198b9e1b6c3659f8bb5Chris Lattner case ConsumeAfter: break; 609b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman default: return error(": bad num occurrences flag value!"); 610dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 611dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 6121e13fd23d34e53b63cb08c0fe54f0857757ec200Reid Spencer return handleOccurrence(pos, ArgName, Value); 613dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 614dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 615331de23705a719514e37c211f327379688f81b0dChris Lattner// addArgument - Tell the system that this Option subclass will handle all 616b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman// occurrences of -ArgStr on the command line. 617331de23705a719514e37c211f327379688f81b0dChris Lattner// 618331de23705a719514e37c211f327379688f81b0dChris Lattnervoid Option::addArgument(const char *ArgStr) { 619331de23705a719514e37c211f327379688f81b0dChris Lattner if (ArgStr[0]) 620331de23705a719514e37c211f327379688f81b0dChris Lattner AddArgument(ArgStr, this); 6219cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner 6229cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (getFormattingFlag() == Positional) 623331de23705a719514e37c211f327379688f81b0dChris Lattner getPositionalOpts().push_back(this); 624dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman else if (getNumOccurrencesFlag() == ConsumeAfter) { 6259cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (!getPositionalOpts().empty() && 6269cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner getPositionalOpts().front()->getNumOccurrencesFlag() == ConsumeAfter) 6279cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner error("Cannot specify more than one option with cl::ConsumeAfter!"); 628331de23705a719514e37c211f327379688f81b0dChris Lattner getPositionalOpts().insert(getPositionalOpts().begin(), this); 629331de23705a719514e37c211f327379688f81b0dChris Lattner } 630331de23705a719514e37c211f327379688f81b0dChris Lattner} 631331de23705a719514e37c211f327379688f81b0dChris Lattner 632aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattnervoid Option::removeArgument(const char *ArgStr) { 6339cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (ArgStr[0]) 634e8e258b1a7e54a77c802e8b309d0a60a62d1a00dChris Lattner RemoveArgument(ArgStr, this); 6359cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner 6369cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (getFormattingFlag() == Positional) { 637ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::vector<Option*>::iterator I = 638aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner std::find(getPositionalOpts().begin(), getPositionalOpts().end(), this); 639aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner assert(I != getPositionalOpts().end() && "Arg not registered!"); 640aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner getPositionalOpts().erase(I); 641dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman } else if (getNumOccurrencesFlag() == ConsumeAfter) { 642aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner assert(!getPositionalOpts().empty() && getPositionalOpts()[0] == this && 643aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner "Arg not registered correctly!"); 644aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner getPositionalOpts().erase(getPositionalOpts().begin()); 645aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner } 646aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner} 647aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner 648331de23705a719514e37c211f327379688f81b0dChris Lattner 649331de23705a719514e37c211f327379688f81b0dChris Lattner// getValueStr - Get the value description string, using "DefaultMsg" if nothing 650331de23705a719514e37c211f327379688f81b0dChris Lattner// has been specified yet. 651331de23705a719514e37c211f327379688f81b0dChris Lattner// 652331de23705a719514e37c211f327379688f81b0dChris Lattnerstatic const char *getValueStr(const Option &O, const char *DefaultMsg) { 653331de23705a719514e37c211f327379688f81b0dChris Lattner if (O.ValueStr[0] == 0) return DefaultMsg; 654331de23705a719514e37c211f327379688f81b0dChris Lattner return O.ValueStr; 655331de23705a719514e37c211f327379688f81b0dChris Lattner} 656331de23705a719514e37c211f327379688f81b0dChris Lattner 657331de23705a719514e37c211f327379688f81b0dChris Lattner//===----------------------------------------------------------------------===// 658331de23705a719514e37c211f327379688f81b0dChris Lattner// cl::alias class implementation 659331de23705a719514e37c211f327379688f81b0dChris Lattner// 660331de23705a719514e37c211f327379688f81b0dChris Lattner 661dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// Return the width of the option tag for printing... 662331de23705a719514e37c211f327379688f81b0dChris Lattnerunsigned alias::getOptionWidth() const { 663dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner return std::strlen(ArgStr)+6; 664dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 665dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 666331de23705a719514e37c211f327379688f81b0dChris Lattner// Print out the option for the alias... 667331de23705a719514e37c211f327379688f81b0dChris Lattnervoid alias::printOptionInfo(unsigned GlobalWidth) const { 668dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner unsigned L = std::strlen(ArgStr); 669ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - " 670ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << HelpStr << "\n"; 671dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 672dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 673dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 674331de23705a719514e37c211f327379688f81b0dChris Lattner 675dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner//===----------------------------------------------------------------------===// 676331de23705a719514e37c211f327379688f81b0dChris Lattner// Parser Implementation code... 677dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 678dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 6799b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// basic_parser implementation 6809b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// 6819b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 6829b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// Return the width of the option tag for printing... 6839b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattnerunsigned basic_parser_impl::getOptionWidth(const Option &O) const { 6849b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner unsigned Len = std::strlen(O.ArgStr); 6859b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner if (const char *ValName = getValueName()) 6869b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner Len += std::strlen(getValueStr(O, ValName))+3; 6879b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 6889b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner return Len + 6; 6899b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner} 6909b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 6919b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// printOptionInfo - Print out information about this option. The 6929b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// to-be-maintained width is specified. 6939b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// 6949b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattnervoid basic_parser_impl::printOptionInfo(const Option &O, 6959b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner unsigned GlobalWidth) const { 696ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " -" << O.ArgStr; 6979b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 6989b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner if (const char *ValName = getValueName()) 699ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << "=<" << getValueStr(O, ValName) << ">"; 7009b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 701ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - " 702ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << O.HelpStr << "\n"; 7039b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner} 7049b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 7059b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 7069b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 7079b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner 708331de23705a719514e37c211f327379688f81b0dChris Lattner// parser<bool> implementation 709331de23705a719514e37c211f327379688f81b0dChris Lattner// 7109b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattnerbool parser<bool>::parse(Option &O, const char *ArgName, 711ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner const std::string &Arg, bool &Value) { 712dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" || 713dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner Arg == "1") { 714dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner Value = true; 715dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") { 716dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner Value = false; 717dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } else { 718331de23705a719514e37c211f327379688f81b0dChris Lattner return O.error(": '" + Arg + 719331de23705a719514e37c211f327379688f81b0dChris Lattner "' is invalid value for boolean argument! Try 0 or 1"); 720dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 721dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner return false; 722dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 723dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 724331de23705a719514e37c211f327379688f81b0dChris Lattner// parser<int> implementation 725dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 7269b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattnerbool parser<int>::parse(Option &O, const char *ArgName, 727ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner const std::string &Arg, int &Value) { 728331de23705a719514e37c211f327379688f81b0dChris Lattner char *End; 729d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner Value = (int)strtol(Arg.c_str(), &End, 0); 730331de23705a719514e37c211f327379688f81b0dChris Lattner if (*End != 0) 731331de23705a719514e37c211f327379688f81b0dChris Lattner return O.error(": '" + Arg + "' value invalid for integer argument!"); 732331de23705a719514e37c211f327379688f81b0dChris Lattner return false; 733dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 734dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 735d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner// parser<unsigned> implementation 736d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner// 737d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattnerbool parser<unsigned>::parse(Option &O, const char *ArgName, 738d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner const std::string &Arg, unsigned &Value) { 739d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner char *End; 7402d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke errno = 0; 7412d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke unsigned long V = strtoul(Arg.c_str(), &End, 0); 742d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner Value = (unsigned)V; 7432d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke if (((V == ULONG_MAX) && (errno == ERANGE)) 7442d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke || (*End != 0) 7452d6a2360036cf511af0a06f9720e6a1752779d1cBrian Gaeke || (Value != V)) 746d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner return O.error(": '" + Arg + "' value invalid for uint argument!"); 747d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner return false; 748d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner} 749d2a6fc397ee982936dee7dd5692b1481bcd9fe8fChris Lattner 7509b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner// parser<double>/parser<float> implementation 751331de23705a719514e37c211f327379688f81b0dChris Lattner// 752ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattnerstatic bool parseDouble(Option &O, const std::string &Arg, double &Value) { 753331de23705a719514e37c211f327379688f81b0dChris Lattner const char *ArgStart = Arg.c_str(); 754331de23705a719514e37c211f327379688f81b0dChris Lattner char *End; 755331de23705a719514e37c211f327379688f81b0dChris Lattner Value = strtod(ArgStart, &End); 756331de23705a719514e37c211f327379688f81b0dChris Lattner if (*End != 0) 757331de23705a719514e37c211f327379688f81b0dChris Lattner return O.error(": '" +Arg+ "' value invalid for floating point argument!"); 758dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner return false; 759dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 760dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 7619b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattnerbool parser<double>::parse(Option &O, const char *AN, 7629b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner const std::string &Arg, double &Val) { 7639b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner return parseDouble(O, Arg, Val); 764dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 765dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 7669b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattnerbool parser<float>::parse(Option &O, const char *AN, 7679b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner const std::string &Arg, float &Val) { 7689b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner double dVal; 7699b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner if (parseDouble(O, Arg, dVal)) 7709b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner return true; 7719b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner Val = (float)dVal; 7729b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner return false; 773dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 774dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 775dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 776dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 777331de23705a719514e37c211f327379688f81b0dChris Lattner// generic_parser_base implementation 778dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 779dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 780aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner// findOption - Return the option number corresponding to the specified 781aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner// argument string. If the option is not found, getNumOptions() is returned. 782aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner// 783aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattnerunsigned generic_parser_base::findOption(const char *Name) { 784aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner unsigned i = 0, e = getNumOptions(); 785ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::string N(Name); 786aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner 787aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner while (i != e) 788aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner if (getOption(i) == N) 789aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner return i; 790aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner else 791aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner ++i; 792aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner return e; 793aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner} 794aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner 795aa852bbb503571d1198856fa4c6e099d7625e3b3Chris Lattner 796dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// Return the width of the option tag for printing... 797331de23705a719514e37c211f327379688f81b0dChris Lattnerunsigned generic_parser_base::getOptionWidth(const Option &O) const { 798331de23705a719514e37c211f327379688f81b0dChris Lattner if (O.hasArgStr()) { 799331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned Size = std::strlen(O.ArgStr)+6; 800331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = getNumOptions(); i != e; ++i) 801331de23705a719514e37c211f327379688f81b0dChris Lattner Size = std::max(Size, (unsigned)std::strlen(getOption(i))+8); 802331de23705a719514e37c211f327379688f81b0dChris Lattner return Size; 803331de23705a719514e37c211f327379688f81b0dChris Lattner } else { 804331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned BaseSize = 0; 805331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = getNumOptions(); i != e; ++i) 806331de23705a719514e37c211f327379688f81b0dChris Lattner BaseSize = std::max(BaseSize, (unsigned)std::strlen(getOption(i))+8); 807331de23705a719514e37c211f327379688f81b0dChris Lattner return BaseSize; 808331de23705a719514e37c211f327379688f81b0dChris Lattner } 809dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 810dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 811dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// printOptionInfo - Print out information about this option. The 812dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// to-be-maintained width is specified. 813dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 814331de23705a719514e37c211f327379688f81b0dChris Lattnervoid generic_parser_base::printOptionInfo(const Option &O, 815331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned GlobalWidth) const { 816331de23705a719514e37c211f327379688f81b0dChris Lattner if (O.hasArgStr()) { 817331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned L = std::strlen(O.ArgStr); 818ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " -" << O.ArgStr << std::string(GlobalWidth-L-6, ' ') 819ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << " - " << O.HelpStr << "\n"; 820331de23705a719514e37c211f327379688f81b0dChris Lattner 821331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = getNumOptions(); i != e; ++i) { 822331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned NumSpaces = GlobalWidth-strlen(getOption(i))-8; 823ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " =" << getOption(i) << std::string(NumSpaces, ' ') 824ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << " - " << getDescription(i) << "\n"; 825331de23705a719514e37c211f327379688f81b0dChris Lattner } 826331de23705a719514e37c211f327379688f81b0dChris Lattner } else { 827331de23705a719514e37c211f327379688f81b0dChris Lattner if (O.HelpStr[0]) 828ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " " << O.HelpStr << "\n"; 829331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = getNumOptions(); i != e; ++i) { 830331de23705a719514e37c211f327379688f81b0dChris Lattner unsigned L = std::strlen(getOption(i)); 831ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " -" << getOption(i) << std::string(GlobalWidth-L-8, ' ') 832ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner << " - " << getDescription(i) << "\n"; 833331de23705a719514e37c211f327379688f81b0dChris Lattner } 834dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 835dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} 836dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 837dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 838dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner//===----------------------------------------------------------------------===// 839331de23705a719514e37c211f327379688f81b0dChris Lattner// --help and --help-hidden option implementation 840dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner// 841ad0846bd8be0a86e0277e1890fd280c9868f830aReid Spencer 842dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattnernamespace { 843dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 844331de23705a719514e37c211f327379688f81b0dChris Lattnerclass HelpPrinter { 845dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner unsigned MaxArgLen; 846dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner const Option *EmptyArg; 847dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner const bool ShowHidden; 848dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 849331de23705a719514e37c211f327379688f81b0dChris Lattner // isHidden/isReallyHidden - Predicates to be used to filter down arg lists. 850ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner inline static bool isHidden(std::pair<std::string, Option *> &OptPair) { 851331de23705a719514e37c211f327379688f81b0dChris Lattner return OptPair.second->getOptionHiddenFlag() >= Hidden; 852331de23705a719514e37c211f327379688f81b0dChris Lattner } 853ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner inline static bool isReallyHidden(std::pair<std::string, Option *> &OptPair) { 854331de23705a719514e37c211f327379688f81b0dChris Lattner return OptPair.second->getOptionHiddenFlag() == ReallyHidden; 855331de23705a719514e37c211f327379688f81b0dChris Lattner } 856331de23705a719514e37c211f327379688f81b0dChris Lattner 857331de23705a719514e37c211f327379688f81b0dChris Lattnerpublic: 858331de23705a719514e37c211f327379688f81b0dChris Lattner HelpPrinter(bool showHidden) : ShowHidden(showHidden) { 859331de23705a719514e37c211f327379688f81b0dChris Lattner EmptyArg = 0; 860331de23705a719514e37c211f327379688f81b0dChris Lattner } 861331de23705a719514e37c211f327379688f81b0dChris Lattner 862331de23705a719514e37c211f327379688f81b0dChris Lattner void operator=(bool Value) { 863331de23705a719514e37c211f327379688f81b0dChris Lattner if (Value == false) return; 864331de23705a719514e37c211f327379688f81b0dChris Lattner 865dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // Copy Options into a vector so we can sort them as we like... 866ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::vector<std::pair<std::string, Option*> > Options; 867697954c15da58bd8b186dbafdedd8b06db770201Chris Lattner copy(getOpts().begin(), getOpts().end(), std::back_inserter(Options)); 868dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 869dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // Eliminate Hidden or ReallyHidden arguments, depending on ShowHidden 870331de23705a719514e37c211f327379688f81b0dChris Lattner Options.erase(std::remove_if(Options.begin(), Options.end(), 871331de23705a719514e37c211f327379688f81b0dChris Lattner std::ptr_fun(ShowHidden ? isReallyHidden : isHidden)), 872b5c520bfb6505caaa6ad8468b372530d44c8b253Misha Brukman Options.end()); 873dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 874dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // Eliminate duplicate entries in table (from enum flags options, f.e.) 875331de23705a719514e37c211f327379688f81b0dChris Lattner { // Give OptionSet a scope 876331de23705a719514e37c211f327379688f81b0dChris Lattner std::set<Option*> OptionSet; 877331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0; i != Options.size(); ++i) 878331de23705a719514e37c211f327379688f81b0dChris Lattner if (OptionSet.count(Options[i].second) == 0) 879331de23705a719514e37c211f327379688f81b0dChris Lattner OptionSet.insert(Options[i].second); // Add new entry to set 880331de23705a719514e37c211f327379688f81b0dChris Lattner else 881331de23705a719514e37c211f327379688f81b0dChris Lattner Options.erase(Options.begin()+i--); // Erase duplicate 882331de23705a719514e37c211f327379688f81b0dChris Lattner } 883dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 884dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner if (ProgramOverview) 885ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << "OVERVIEW:" << ProgramOverview << "\n"; 886dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 887ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << "USAGE: " << ProgramName << " [options]"; 888331de23705a719514e37c211f327379688f81b0dChris Lattner 889331de23705a719514e37c211f327379688f81b0dChris Lattner // Print out the positional options... 890ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::vector<Option*> &PosOpts = getPositionalOpts(); 891331de23705a719514e37c211f327379688f81b0dChris Lattner Option *CAOpt = 0; // The cl::ConsumeAfter option, if it exists... 892dd6cb6a43b78732f1a136583ccca4e715bae7d71Misha Brukman if (!PosOpts.empty() && PosOpts[0]->getNumOccurrencesFlag() == ConsumeAfter) 893331de23705a719514e37c211f327379688f81b0dChris Lattner CAOpt = PosOpts[0]; 894331de23705a719514e37c211f327379688f81b0dChris Lattner 8959cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner for (unsigned i = CAOpt != 0, e = PosOpts.size(); i != e; ++i) { 8969cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner if (PosOpts[i]->ArgStr[0]) 8979cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner std::cerr << " --" << PosOpts[i]->ArgStr; 898ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << " " << PosOpts[i]->HelpStr; 8999cf3d4770230238f2f395514bf04e0e64352d261Chris Lattner } 900331de23705a719514e37c211f327379688f81b0dChris Lattner 901331de23705a719514e37c211f327379688f81b0dChris Lattner // Print the consume after option info if it exists... 902ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner if (CAOpt) std::cerr << " " << CAOpt->HelpStr; 903331de23705a719514e37c211f327379688f81b0dChris Lattner 904ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << "\n\n"; 905dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 906dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner // Compute the maximum argument length... 907dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner MaxArgLen = 0; 908331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = Options.size(); i != e; ++i) 909331de23705a719514e37c211f327379688f81b0dChris Lattner MaxArgLen = std::max(MaxArgLen, Options[i].second->getOptionWidth()); 910dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 911ca6433f233b7ed432916ba07976f9a4e9e0767b0Chris Lattner std::cerr << "OPTIONS:\n"; 912331de23705a719514e37c211f327379688f81b0dChris Lattner for (unsigned i = 0, e = Options.size(); i != e; ++i) 913331de23705a719514e37c211f327379688f81b0dChris Lattner Options[i].second->printOptionInfo(MaxArgLen); 914dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 915c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner // Print any extra help the user has declared. 916c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner for (std::vector<const char *>::iterator I = MoreHelp().begin(), 917c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner E = MoreHelp().end(); I != E; ++I) 918c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner std::cerr << *I; 919c540ebbc1b7c2f6a92a968b4d36137a7332cea32Chris Lattner MoreHelp().clear(); 920ad0846bd8be0a86e0277e1890fd280c9868f830aReid Spencer 9219bbba091396922093687d11a181e5886c42c5dfdReid Spencer // Halt the program since help information was printed 922331de23705a719514e37c211f327379688f81b0dChris Lattner exit(1); 923dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner } 924331de23705a719514e37c211f327379688f81b0dChris Lattner}; 925dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 92669105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencerclass VersionPrinter { 92769105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencerpublic: 92869105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer void operator=(bool OptionWasSpecified) { 92969105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer if (OptionWasSpecified) { 93069105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer std::cerr << "Low Level Virtual Machine (" << PACKAGE_NAME << ") " 931fb4863ac5506229abe7ee9d9cfffbe4f45fe71ebMisha Brukman << PACKAGE_VERSION << " (see http://llvm.cs.uiuc.edu/)\n"; 93269105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer exit(1); 93369105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer } 93469105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer } 93569105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer}; 936dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 937dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 938331de23705a719514e37c211f327379688f81b0dChris Lattner// Define the two HelpPrinter instances that are used to print out help, or 939331de23705a719514e37c211f327379688f81b0dChris Lattner// help-hidden... 940331de23705a719514e37c211f327379688f81b0dChris Lattner// 941331de23705a719514e37c211f327379688f81b0dChris LattnerHelpPrinter NormalPrinter(false); 942331de23705a719514e37c211f327379688f81b0dChris LattnerHelpPrinter HiddenPrinter(true); 943331de23705a719514e37c211f327379688f81b0dChris Lattner 944331de23705a719514e37c211f327379688f81b0dChris Lattnercl::opt<HelpPrinter, true, parser<bool> > 945331de23705a719514e37c211f327379688f81b0dChris LattnerHOp("help", cl::desc("display available options (--help-hidden for more)"), 9469b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner cl::location(NormalPrinter), cl::ValueDisallowed); 947dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 948331de23705a719514e37c211f327379688f81b0dChris Lattnercl::opt<HelpPrinter, true, parser<bool> > 949331de23705a719514e37c211f327379688f81b0dChris LattnerHHOp("help-hidden", cl::desc("display all available options"), 9509b14eb5a781cea80ade37ab9462ba0721cbdbb9cChris Lattner cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed); 951dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner 95269105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer// Define the --version option that prints out the LLVM version for the tool 95369105f33c190621a6b1ad61f925b1a9e6b0512afReid SpencerVersionPrinter VersionPrinterInstance; 95469105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencercl::opt<VersionPrinter, true, parser<bool> > 95569105f33c190621a6b1ad61f925b1a9e6b0512afReid SpencerVersOp("version", cl::desc("display the version"), 95669105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer cl::location(VersionPrinterInstance), cl::ValueDisallowed); 95769105f33c190621a6b1ad61f925b1a9e6b0512afReid Spencer 9589bbba091396922093687d11a181e5886c42c5dfdReid Spencer 959dbab15a2c9accc0242109881e1632137cb97dbc9Chris Lattner} // End anonymous namespace 9609bbba091396922093687d11a181e5886c42c5dfdReid Spencer 9619bbba091396922093687d11a181e5886c42c5dfdReid Spencer// Utility function for printing the help message. 9629bbba091396922093687d11a181e5886c42c5dfdReid Spencervoid cl::PrintHelpMessage() { 9635cc498f116cd76235c9c0a2ded46bc29f8fb35e0Reid Spencer // This looks weird, but it actually prints the help message. The 9645cc498f116cd76235c9c0a2ded46bc29f8fb35e0Reid Spencer // NormalPrinter variable is a HelpPrinter and the help gets printed when 9655cc498f116cd76235c9c0a2ded46bc29f8fb35e0Reid Spencer // its operator= is invoked. That's because the "normal" usages of the 9665cc498f116cd76235c9c0a2ded46bc29f8fb35e0Reid Spencer // help printer is to be assigned true/false depending on whether the 9675cc498f116cd76235c9c0a2ded46bc29f8fb35e0Reid Spencer // --help option was given or not. Since we're circumventing that we have 9685cc498f116cd76235c9c0a2ded46bc29f8fb35e0Reid Spencer // to make it look like --help was given, so we assign true. 9699bbba091396922093687d11a181e5886c42c5dfdReid Spencer NormalPrinter = true; 9709bbba091396922093687d11a181e5886c42c5dfdReid Spencer} 971