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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75889 91177308-0d34-0410-b5e6-96231b3b80d8
1203 lines
42 KiB
C++
1203 lines
42 KiB
C++
//===-- CommandLine.cpp - Command line parser implementation --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class implements a command line argument processor that is useful when
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// creating a tool. It provides a simple, minimalistic interface that is easily
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// extensible and supports nonlocal (library) command line options.
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//
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// Note that rather than trying to figure out what this code does, you could try
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// reading the library documentation located in docs/CommandLine.html
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Config/config.h"
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#include "llvm/ADT/OwningPtr.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Streams.h"
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#include "llvm/Target/TargetRegistry.h"
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#include "llvm/System/Path.h"
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#include <algorithm>
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#include <functional>
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#include <map>
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#include <ostream>
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#include <set>
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#include <cstdlib>
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#include <cerrno>
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#include <cstring>
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#include <climits>
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using namespace llvm;
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using namespace cl;
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//===----------------------------------------------------------------------===//
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// Template instantiations and anchors.
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//
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TEMPLATE_INSTANTIATION(class basic_parser<bool>);
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TEMPLATE_INSTANTIATION(class basic_parser<boolOrDefault>);
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TEMPLATE_INSTANTIATION(class basic_parser<int>);
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TEMPLATE_INSTANTIATION(class basic_parser<unsigned>);
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TEMPLATE_INSTANTIATION(class basic_parser<double>);
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TEMPLATE_INSTANTIATION(class basic_parser<float>);
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TEMPLATE_INSTANTIATION(class basic_parser<std::string>);
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TEMPLATE_INSTANTIATION(class basic_parser<char>);
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TEMPLATE_INSTANTIATION(class opt<unsigned>);
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TEMPLATE_INSTANTIATION(class opt<int>);
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TEMPLATE_INSTANTIATION(class opt<std::string>);
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TEMPLATE_INSTANTIATION(class opt<char>);
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TEMPLATE_INSTANTIATION(class opt<bool>);
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void Option::anchor() {}
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void basic_parser_impl::anchor() {}
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void parser<bool>::anchor() {}
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void parser<boolOrDefault>::anchor() {}
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void parser<int>::anchor() {}
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void parser<unsigned>::anchor() {}
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void parser<double>::anchor() {}
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void parser<float>::anchor() {}
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void parser<std::string>::anchor() {}
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void parser<char>::anchor() {}
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//===----------------------------------------------------------------------===//
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// Globals for name and overview of program. Program name is not a string to
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// avoid static ctor/dtor issues.
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static char ProgramName[80] = "<premain>";
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static const char *ProgramOverview = 0;
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// This collects additional help to be printed.
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static ManagedStatic<std::vector<const char*> > MoreHelp;
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extrahelp::extrahelp(const char *Help)
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: morehelp(Help) {
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MoreHelp->push_back(Help);
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}
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static bool OptionListChanged = false;
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// MarkOptionsChanged - Internal helper function.
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void cl::MarkOptionsChanged() {
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OptionListChanged = true;
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}
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/// RegisteredOptionList - This is the list of the command line options that
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/// have statically constructed themselves.
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static Option *RegisteredOptionList = 0;
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void Option::addArgument() {
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assert(NextRegistered == 0 && "argument multiply registered!");
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NextRegistered = RegisteredOptionList;
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RegisteredOptionList = this;
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MarkOptionsChanged();
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}
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//===----------------------------------------------------------------------===//
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// Basic, shared command line option processing machinery.
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//
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/// GetOptionInfo - Scan the list of registered options, turning them into data
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/// structures that are easier to handle.
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static void GetOptionInfo(std::vector<Option*> &PositionalOpts,
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std::vector<Option*> &SinkOpts,
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std::map<std::string, Option*> &OptionsMap) {
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std::vector<const char*> OptionNames;
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Option *CAOpt = 0; // The ConsumeAfter option if it exists.
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for (Option *O = RegisteredOptionList; O; O = O->getNextRegisteredOption()) {
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// If this option wants to handle multiple option names, get the full set.
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// This handles enum options like "-O1 -O2" etc.
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O->getExtraOptionNames(OptionNames);
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if (O->ArgStr[0])
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OptionNames.push_back(O->ArgStr);
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// Handle named options.
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for (size_t i = 0, e = OptionNames.size(); i != e; ++i) {
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// Add argument to the argument map!
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if (!OptionsMap.insert(std::pair<std::string,Option*>(OptionNames[i],
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O)).second) {
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cerr << ProgramName << ": CommandLine Error: Argument '"
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<< OptionNames[i] << "' defined more than once!\n";
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}
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}
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OptionNames.clear();
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// Remember information about positional options.
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if (O->getFormattingFlag() == cl::Positional)
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PositionalOpts.push_back(O);
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else if (O->getMiscFlags() & cl::Sink) // Remember sink options
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SinkOpts.push_back(O);
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else if (O->getNumOccurrencesFlag() == cl::ConsumeAfter) {
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if (CAOpt)
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O->error("Cannot specify more than one option with cl::ConsumeAfter!");
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CAOpt = O;
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}
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}
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if (CAOpt)
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PositionalOpts.push_back(CAOpt);
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// Make sure that they are in order of registration not backwards.
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std::reverse(PositionalOpts.begin(), PositionalOpts.end());
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}
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/// LookupOption - Lookup the option specified by the specified option on the
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/// command line. If there is a value specified (after an equal sign) return
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/// that as well.
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static Option *LookupOption(const char *&Arg, const char *&Value,
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std::map<std::string, Option*> &OptionsMap) {
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while (*Arg == '-') ++Arg; // Eat leading dashes
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const char *ArgEnd = Arg;
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while (*ArgEnd && *ArgEnd != '=')
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++ArgEnd; // Scan till end of argument name.
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if (*ArgEnd == '=') // If we have an equals sign...
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Value = ArgEnd+1; // Get the value, not the equals
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if (*Arg == 0) return 0;
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// Look up the option.
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std::map<std::string, Option*>::iterator I =
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OptionsMap.find(std::string(Arg, ArgEnd));
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return I != OptionsMap.end() ? I->second : 0;
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}
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static inline bool ProvideOption(Option *Handler, const char *ArgName,
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const char *Value, int argc, char **argv,
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int &i) {
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// Is this a multi-argument option?
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unsigned NumAdditionalVals = Handler->getNumAdditionalVals();
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// Enforce value requirements
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switch (Handler->getValueExpectedFlag()) {
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case ValueRequired:
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if (Value == 0) { // No value specified?
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if (i+1 < argc) { // Steal the next argument, like for '-o filename'
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Value = argv[++i];
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} else {
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return Handler->error(" requires a value!");
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}
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}
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break;
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case ValueDisallowed:
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if (NumAdditionalVals > 0)
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return Handler->error(": multi-valued option specified"
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" with ValueDisallowed modifier!");
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if (Value)
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return Handler->error(" does not allow a value! '" +
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std::string(Value) + "' specified.");
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break;
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case ValueOptional:
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break;
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default:
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cerr << ProgramName
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<< ": Bad ValueMask flag! CommandLine usage error:"
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<< Handler->getValueExpectedFlag() << "\n";
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llvm_unreachable(0);
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}
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// If this isn't a multi-arg option, just run the handler.
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if (NumAdditionalVals == 0) {
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return Handler->addOccurrence(i, ArgName, Value ? Value : "");
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}
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// If it is, run the handle several times.
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else {
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bool MultiArg = false;
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if (Value) {
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if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
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return true;
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--NumAdditionalVals;
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MultiArg = true;
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}
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while (NumAdditionalVals > 0) {
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if (i+1 < argc) {
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Value = argv[++i];
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} else {
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return Handler->error(": not enough values!");
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}
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if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
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return true;
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MultiArg = true;
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--NumAdditionalVals;
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}
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return false;
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}
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}
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static bool ProvidePositionalOption(Option *Handler, const std::string &Arg,
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int i) {
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int Dummy = i;
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return ProvideOption(Handler, Handler->ArgStr, Arg.c_str(), 0, 0, Dummy);
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}
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// Option predicates...
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static inline bool isGrouping(const Option *O) {
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return O->getFormattingFlag() == cl::Grouping;
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}
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static inline bool isPrefixedOrGrouping(const Option *O) {
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return isGrouping(O) || O->getFormattingFlag() == cl::Prefix;
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}
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// getOptionPred - Check to see if there are any options that satisfy the
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// specified predicate with names that are the prefixes in Name. This is
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// checked by progressively stripping characters off of the name, checking to
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// see if there options that satisfy the predicate. If we find one, return it,
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// otherwise return null.
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//
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static Option *getOptionPred(std::string Name, size_t &Length,
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bool (*Pred)(const Option*),
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std::map<std::string, Option*> &OptionsMap) {
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std::map<std::string, Option*>::iterator OMI = OptionsMap.find(Name);
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if (OMI != OptionsMap.end() && Pred(OMI->second)) {
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Length = Name.length();
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return OMI->second;
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}
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if (Name.size() == 1) return 0;
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do {
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Name.erase(Name.end()-1, Name.end()); // Chop off the last character...
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OMI = OptionsMap.find(Name);
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// Loop while we haven't found an option and Name still has at least two
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// characters in it (so that the next iteration will not be the empty
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// string...
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} while ((OMI == OptionsMap.end() || !Pred(OMI->second)) && Name.size() > 1);
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if (OMI != OptionsMap.end() && Pred(OMI->second)) {
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Length = Name.length();
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return OMI->second; // Found one!
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}
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return 0; // No option found!
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}
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static bool RequiresValue(const Option *O) {
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return O->getNumOccurrencesFlag() == cl::Required ||
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O->getNumOccurrencesFlag() == cl::OneOrMore;
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}
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static bool EatsUnboundedNumberOfValues(const Option *O) {
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return O->getNumOccurrencesFlag() == cl::ZeroOrMore ||
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O->getNumOccurrencesFlag() == cl::OneOrMore;
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}
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/// ParseCStringVector - Break INPUT up wherever one or more
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/// whitespace characters are found, and store the resulting tokens in
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/// OUTPUT. The tokens stored in OUTPUT are dynamically allocated
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/// using strdup (), so it is the caller's responsibility to free ()
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/// them later.
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///
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static void ParseCStringVector(std::vector<char *> &output,
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const char *input) {
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// Characters which will be treated as token separators:
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static const char *const delims = " \v\f\t\r\n";
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std::string work (input);
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// Skip past any delims at head of input string.
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size_t pos = work.find_first_not_of (delims);
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// If the string consists entirely of delims, then exit early.
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if (pos == std::string::npos) return;
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// Otherwise, jump forward to beginning of first word.
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work = work.substr (pos);
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// Find position of first delimiter.
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pos = work.find_first_of (delims);
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while (!work.empty() && pos != std::string::npos) {
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// Everything from 0 to POS is the next word to copy.
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output.push_back (strdup (work.substr (0,pos).c_str ()));
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// Is there another word in the string?
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size_t nextpos = work.find_first_not_of (delims, pos + 1);
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if (nextpos != std::string::npos) {
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// Yes? Then remove delims from beginning ...
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work = work.substr (work.find_first_not_of (delims, pos + 1));
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// and find the end of the word.
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pos = work.find_first_of (delims);
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} else {
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// No? (Remainder of string is delims.) End the loop.
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work = "";
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pos = std::string::npos;
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}
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}
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// If `input' ended with non-delim char, then we'll get here with
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// the last word of `input' in `work'; copy it now.
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if (!work.empty ()) {
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output.push_back (strdup (work.c_str ()));
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}
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}
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/// ParseEnvironmentOptions - An alternative entry point to the
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/// CommandLine library, which allows you to read the program's name
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/// from the caller (as PROGNAME) and its command-line arguments from
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/// an environment variable (whose name is given in ENVVAR).
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///
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void cl::ParseEnvironmentOptions(const char *progName, const char *envVar,
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const char *Overview, bool ReadResponseFiles) {
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// Check args.
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assert(progName && "Program name not specified");
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assert(envVar && "Environment variable name missing");
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// Get the environment variable they want us to parse options out of.
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const char *envValue = getenv(envVar);
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if (!envValue)
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return;
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// Get program's "name", which we wouldn't know without the caller
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// telling us.
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std::vector<char*> newArgv;
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newArgv.push_back(strdup(progName));
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// Parse the value of the environment variable into a "command line"
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// and hand it off to ParseCommandLineOptions().
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ParseCStringVector(newArgv, envValue);
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int newArgc = static_cast<int>(newArgv.size());
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ParseCommandLineOptions(newArgc, &newArgv[0], Overview, ReadResponseFiles);
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// Free all the strdup()ed strings.
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for (std::vector<char*>::iterator i = newArgv.begin(), e = newArgv.end();
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i != e; ++i)
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free (*i);
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}
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/// ExpandResponseFiles - Copy the contents of argv into newArgv,
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/// substituting the contents of the response files for the arguments
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/// of type @file.
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static void ExpandResponseFiles(int argc, char** argv,
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std::vector<char*>& newArgv) {
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for (int i = 1; i != argc; ++i) {
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char* arg = argv[i];
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if (arg[0] == '@') {
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sys::PathWithStatus respFile(++arg);
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// Check that the response file is not empty (mmap'ing empty
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// files can be problematic).
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const sys::FileStatus *FileStat = respFile.getFileStatus();
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if (FileStat && FileStat->getSize() != 0) {
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// Mmap the response file into memory.
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OwningPtr<MemoryBuffer>
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respFilePtr(MemoryBuffer::getFile(respFile.c_str()));
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// If we could open the file, parse its contents, otherwise
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// pass the @file option verbatim.
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// TODO: we should also support recursive loading of response files,
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// since this is how gcc behaves. (From their man page: "The file may
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// itself contain additional @file options; any such options will be
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// processed recursively.")
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if (respFilePtr != 0) {
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ParseCStringVector(newArgv, respFilePtr->getBufferStart());
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continue;
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}
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}
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}
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newArgv.push_back(strdup(arg));
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}
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}
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void cl::ParseCommandLineOptions(int argc, char **argv,
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const char *Overview, bool ReadResponseFiles) {
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// Process all registered options.
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std::vector<Option*> PositionalOpts;
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std::vector<Option*> SinkOpts;
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std::map<std::string, Option*> Opts;
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GetOptionInfo(PositionalOpts, SinkOpts, Opts);
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assert((!Opts.empty() || !PositionalOpts.empty()) &&
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"No options specified!");
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// Expand response files.
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std::vector<char*> newArgv;
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if (ReadResponseFiles) {
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newArgv.push_back(strdup(argv[0]));
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ExpandResponseFiles(argc, argv, newArgv);
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argv = &newArgv[0];
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argc = static_cast<int>(newArgv.size());
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}
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// Copy the program name into ProgName, making sure not to overflow it.
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std::string ProgName = sys::Path(argv[0]).getLast();
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if (ProgName.size() > 79) ProgName.resize(79);
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strcpy(ProgramName, ProgName.c_str());
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ProgramOverview = Overview;
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bool ErrorParsing = false;
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// Check out the positional arguments to collect information about them.
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unsigned NumPositionalRequired = 0;
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// Determine whether or not there are an unlimited number of positionals
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bool HasUnlimitedPositionals = false;
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Option *ConsumeAfterOpt = 0;
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if (!PositionalOpts.empty()) {
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if (PositionalOpts[0]->getNumOccurrencesFlag() == cl::ConsumeAfter) {
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assert(PositionalOpts.size() > 1 &&
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"Cannot specify cl::ConsumeAfter without a positional argument!");
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ConsumeAfterOpt = PositionalOpts[0];
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}
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// Calculate how many positional values are _required_.
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bool UnboundedFound = false;
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for (size_t i = ConsumeAfterOpt != 0, e = PositionalOpts.size();
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i != e; ++i) {
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Option *Opt = PositionalOpts[i];
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if (RequiresValue(Opt))
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++NumPositionalRequired;
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else if (ConsumeAfterOpt) {
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// ConsumeAfter cannot be combined with "optional" positional options
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// unless there is only one positional argument...
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if (PositionalOpts.size() > 2)
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ErrorParsing |=
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Opt->error(" error - this positional option will never be matched, "
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"because it does not Require a value, and a "
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"cl::ConsumeAfter option is active!");
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} else if (UnboundedFound && !Opt->ArgStr[0]) {
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// This option does not "require" a value... Make sure this option is
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// not specified after an option that eats all extra arguments, or this
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// one will never get any!
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//
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ErrorParsing |= Opt->error(" error - option can never match, because "
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"another positional argument will match an "
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"unbounded number of values, and this option"
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" does not require a value!");
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}
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UnboundedFound |= EatsUnboundedNumberOfValues(Opt);
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}
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HasUnlimitedPositionals = UnboundedFound || ConsumeAfterOpt;
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}
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// PositionalVals - A vector of "positional" arguments we accumulate into
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// the process at the end...
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//
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std::vector<std::pair<std::string,unsigned> > PositionalVals;
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|
|
|
// If the program has named positional arguments, and the name has been run
|
|
// across, keep track of which positional argument was named. Otherwise put
|
|
// the positional args into the PositionalVals list...
|
|
Option *ActivePositionalArg = 0;
|
|
|
|
// Loop over all of the arguments... processing them.
|
|
bool DashDashFound = false; // Have we read '--'?
|
|
for (int i = 1; i < argc; ++i) {
|
|
Option *Handler = 0;
|
|
const char *Value = 0;
|
|
const char *ArgName = "";
|
|
|
|
// If the option list changed, this means that some command line
|
|
// option has just been registered or deregistered. This can occur in
|
|
// response to things like -load, etc. If this happens, rescan the options.
|
|
if (OptionListChanged) {
|
|
PositionalOpts.clear();
|
|
SinkOpts.clear();
|
|
Opts.clear();
|
|
GetOptionInfo(PositionalOpts, SinkOpts, Opts);
|
|
OptionListChanged = false;
|
|
}
|
|
|
|
// Check to see if this is a positional argument. This argument is
|
|
// considered to be positional if it doesn't start with '-', if it is "-"
|
|
// itself, or if we have seen "--" already.
|
|
//
|
|
if (argv[i][0] != '-' || argv[i][1] == 0 || DashDashFound) {
|
|
// Positional argument!
|
|
if (ActivePositionalArg) {
|
|
ProvidePositionalOption(ActivePositionalArg, argv[i], i);
|
|
continue; // We are done!
|
|
} else if (!PositionalOpts.empty()) {
|
|
PositionalVals.push_back(std::make_pair(argv[i],i));
|
|
|
|
// All of the positional arguments have been fulfulled, give the rest to
|
|
// the consume after option... if it's specified...
|
|
//
|
|
if (PositionalVals.size() >= NumPositionalRequired &&
|
|
ConsumeAfterOpt != 0) {
|
|
for (++i; i < argc; ++i)
|
|
PositionalVals.push_back(std::make_pair(argv[i],i));
|
|
break; // Handle outside of the argument processing loop...
|
|
}
|
|
|
|
// Delay processing positional arguments until the end...
|
|
continue;
|
|
}
|
|
} else if (argv[i][0] == '-' && argv[i][1] == '-' && argv[i][2] == 0 &&
|
|
!DashDashFound) {
|
|
DashDashFound = true; // This is the mythical "--"?
|
|
continue; // Don't try to process it as an argument itself.
|
|
} else if (ActivePositionalArg &&
|
|
(ActivePositionalArg->getMiscFlags() & PositionalEatsArgs)) {
|
|
// If there is a positional argument eating options, check to see if this
|
|
// option is another positional argument. If so, treat it as an argument,
|
|
// otherwise feed it to the eating positional.
|
|
ArgName = argv[i]+1;
|
|
Handler = LookupOption(ArgName, Value, Opts);
|
|
if (!Handler || Handler->getFormattingFlag() != cl::Positional) {
|
|
ProvidePositionalOption(ActivePositionalArg, argv[i], i);
|
|
continue; // We are done!
|
|
}
|
|
|
|
} else { // We start with a '-', must be an argument...
|
|
ArgName = argv[i]+1;
|
|
Handler = LookupOption(ArgName, Value, Opts);
|
|
|
|
// Check to see if this "option" is really a prefixed or grouped argument.
|
|
if (Handler == 0) {
|
|
std::string RealName(ArgName);
|
|
if (RealName.size() > 1) {
|
|
size_t Length = 0;
|
|
Option *PGOpt = getOptionPred(RealName, Length, isPrefixedOrGrouping,
|
|
Opts);
|
|
|
|
// If the option is a prefixed option, then the value is simply the
|
|
// rest of the name... so fall through to later processing, by
|
|
// setting up the argument name flags and value fields.
|
|
//
|
|
if (PGOpt && PGOpt->getFormattingFlag() == cl::Prefix) {
|
|
Value = ArgName+Length;
|
|
assert(Opts.find(std::string(ArgName, Value)) != Opts.end() &&
|
|
Opts.find(std::string(ArgName, Value))->second == PGOpt);
|
|
Handler = PGOpt;
|
|
} else if (PGOpt) {
|
|
// This must be a grouped option... handle 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...
|
|
//
|
|
assert(PGOpt->getValueExpectedFlag() != cl::ValueRequired &&
|
|
"Option can not be cl::Grouping AND cl::ValueRequired!");
|
|
int Dummy;
|
|
ErrorParsing |= ProvideOption(PGOpt, RealArgName.c_str(),
|
|
0, 0, 0, Dummy);
|
|
|
|
// Get the next grouping option...
|
|
PGOpt = getOptionPred(RealName, Length, isGrouping, Opts);
|
|
} while (PGOpt && Length != RealName.size());
|
|
|
|
Handler = PGOpt; // Ate all of the options.
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Handler == 0) {
|
|
if (SinkOpts.empty()) {
|
|
cerr << ProgramName << ": Unknown command line argument '"
|
|
<< argv[i] << "'. Try: '" << argv[0] << " --help'\n";
|
|
ErrorParsing = true;
|
|
} else {
|
|
for (std::vector<Option*>::iterator I = SinkOpts.begin(),
|
|
E = SinkOpts.end(); I != E ; ++I)
|
|
(*I)->addOccurrence(i, "", argv[i]);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Check to see if this option accepts a comma separated list of values. If
|
|
// it does, we have to split up the value into multiple values...
|
|
if (Value && Handler->getMiscFlags() & CommaSeparated) {
|
|
std::string Val(Value);
|
|
std::string::size_type Pos = Val.find(',');
|
|
|
|
while (Pos != std::string::npos) {
|
|
// Process the portion before the comma...
|
|
ErrorParsing |= ProvideOption(Handler, ArgName,
|
|
std::string(Val.begin(),
|
|
Val.begin()+Pos).c_str(),
|
|
argc, argv, i);
|
|
// Erase the portion before the comma, AND the comma...
|
|
Val.erase(Val.begin(), Val.begin()+Pos+1);
|
|
Value += Pos+1; // Increment the original value pointer as well...
|
|
|
|
// Check for another comma...
|
|
Pos = Val.find(',');
|
|
}
|
|
}
|
|
|
|
// If this is a named positional argument, just remember that it is the
|
|
// active one...
|
|
if (Handler->getFormattingFlag() == cl::Positional)
|
|
ActivePositionalArg = Handler;
|
|
else
|
|
ErrorParsing |= ProvideOption(Handler, ArgName, Value, argc, argv, i);
|
|
}
|
|
|
|
// Check and handle positional arguments now...
|
|
if (NumPositionalRequired > PositionalVals.size()) {
|
|
cerr << 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 = static_cast<unsigned>(PositionalVals.size());
|
|
for (size_t i = 0, e = PositionalOpts.size(); i != e; ++i) {
|
|
if (RequiresValue(PositionalOpts[i])) {
|
|
ProvidePositionalOption(PositionalOpts[i], PositionalVals[ValNo].first,
|
|
PositionalVals[ValNo].second);
|
|
ValNo++;
|
|
--NumPositionalRequired; // We fulfilled our duty...
|
|
}
|
|
|
|
// If we _can_ give this option more arguments, do so now, as long as we
|
|
// do not give it values that others need. 'Done' controls whether the
|
|
// option even _WANTS_ any more.
|
|
//
|
|
bool Done = PositionalOpts[i]->getNumOccurrencesFlag() == cl::Required;
|
|
while (NumVals-ValNo > NumPositionalRequired && !Done) {
|
|
switch (PositionalOpts[i]->getNumOccurrencesFlag()) {
|
|
case cl::Optional:
|
|
Done = true; // Optional arguments want _at most_ one value
|
|
// FALL THROUGH
|
|
case cl::ZeroOrMore: // Zero or more will take all they can get...
|
|
case cl::OneOrMore: // One or more will take all they can get...
|
|
ProvidePositionalOption(PositionalOpts[i],
|
|
PositionalVals[ValNo].first,
|
|
PositionalVals[ValNo].second);
|
|
ValNo++;
|
|
break;
|
|
default:
|
|
llvm_unreachable("Internal error, unexpected NumOccurrences flag in "
|
|
"positional argument processing!");
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
assert(ConsumeAfterOpt && NumPositionalRequired <= PositionalVals.size());
|
|
unsigned ValNo = 0;
|
|
for (size_t j = 1, e = PositionalOpts.size(); j != e; ++j)
|
|
if (RequiresValue(PositionalOpts[j])) {
|
|
ErrorParsing |= ProvidePositionalOption(PositionalOpts[j],
|
|
PositionalVals[ValNo].first,
|
|
PositionalVals[ValNo].second);
|
|
ValNo++;
|
|
}
|
|
|
|
// Handle the case where there is just one positional option, and it's
|
|
// optional. In this case, we want to give JUST THE FIRST option to the
|
|
// positional option and keep the rest for the consume after. The above
|
|
// loop would have assigned no values to positional options in this case.
|
|
//
|
|
if (PositionalOpts.size() == 2 && ValNo == 0 && !PositionalVals.empty()) {
|
|
ErrorParsing |= ProvidePositionalOption(PositionalOpts[1],
|
|
PositionalVals[ValNo].first,
|
|
PositionalVals[ValNo].second);
|
|
ValNo++;
|
|
}
|
|
|
|
// Handle over all of the rest of the arguments to the
|
|
// cl::ConsumeAfter command line option...
|
|
for (; ValNo != PositionalVals.size(); ++ValNo)
|
|
ErrorParsing |= ProvidePositionalOption(ConsumeAfterOpt,
|
|
PositionalVals[ValNo].first,
|
|
PositionalVals[ValNo].second);
|
|
}
|
|
|
|
// Loop over args and make sure all required args are specified!
|
|
for (std::map<std::string, Option*>::iterator I = Opts.begin(),
|
|
E = Opts.end(); I != E; ++I) {
|
|
switch (I->second->getNumOccurrencesFlag()) {
|
|
case Required:
|
|
case OneOrMore:
|
|
if (I->second->getNumOccurrences() == 0) {
|
|
I->second->error(" must be specified at least once!");
|
|
ErrorParsing = true;
|
|
}
|
|
// Fall through
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Free all of the memory allocated to the map. Command line options may only
|
|
// be processed once!
|
|
Opts.clear();
|
|
PositionalOpts.clear();
|
|
MoreHelp->clear();
|
|
|
|
// Free the memory allocated by ExpandResponseFiles.
|
|
if (ReadResponseFiles) {
|
|
// Free all the strdup()ed strings.
|
|
for (std::vector<char*>::iterator i = newArgv.begin(), e = newArgv.end();
|
|
i != e; ++i)
|
|
free (*i);
|
|
}
|
|
|
|
// If we had an error processing our arguments, don't let the program execute
|
|
if (ErrorParsing) exit(1);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Option Base class implementation
|
|
//
|
|
|
|
bool Option::error(std::string Message, const char *ArgName) {
|
|
if (ArgName == 0) ArgName = ArgStr;
|
|
if (ArgName[0] == 0)
|
|
cerr << HelpStr; // Be nice for positional arguments
|
|
else
|
|
cerr << ProgramName << ": for the -" << ArgName;
|
|
|
|
cerr << " option: " << Message << "\n";
|
|
return true;
|
|
}
|
|
|
|
bool Option::addOccurrence(unsigned pos, const char *ArgName,
|
|
const std::string &Value,
|
|
bool MultiArg) {
|
|
if (!MultiArg)
|
|
NumOccurrences++; // Increment the number of times we have been seen
|
|
|
|
switch (getNumOccurrencesFlag()) {
|
|
case Optional:
|
|
if (NumOccurrences > 1)
|
|
return error(": may only occur zero or one times!", ArgName);
|
|
break;
|
|
case Required:
|
|
if (NumOccurrences > 1)
|
|
return error(": must occur exactly one time!", ArgName);
|
|
// Fall through
|
|
case OneOrMore:
|
|
case ZeroOrMore:
|
|
case ConsumeAfter: break;
|
|
default: return error(": bad num occurrences flag value!");
|
|
}
|
|
|
|
return handleOccurrence(pos, ArgName, Value);
|
|
}
|
|
|
|
|
|
// getValueStr - Get the value description string, using "DefaultMsg" if nothing
|
|
// has been specified yet.
|
|
//
|
|
static const char *getValueStr(const Option &O, const char *DefaultMsg) {
|
|
if (O.ValueStr[0] == 0) return DefaultMsg;
|
|
return O.ValueStr;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// cl::alias class implementation
|
|
//
|
|
|
|
// Return the width of the option tag for printing...
|
|
size_t alias::getOptionWidth() const {
|
|
return std::strlen(ArgStr)+6;
|
|
}
|
|
|
|
// Print out the option for the alias.
|
|
void alias::printOptionInfo(size_t GlobalWidth) const {
|
|
size_t L = std::strlen(ArgStr);
|
|
cerr << " -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - "
|
|
<< HelpStr << "\n";
|
|
}
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Parser Implementation code...
|
|
//
|
|
|
|
// basic_parser implementation
|
|
//
|
|
|
|
// Return the width of the option tag for printing...
|
|
size_t basic_parser_impl::getOptionWidth(const Option &O) const {
|
|
size_t Len = std::strlen(O.ArgStr);
|
|
if (const char *ValName = getValueName())
|
|
Len += std::strlen(getValueStr(O, ValName))+3;
|
|
|
|
return Len + 6;
|
|
}
|
|
|
|
// printOptionInfo - Print out information about this option. The
|
|
// to-be-maintained width is specified.
|
|
//
|
|
void basic_parser_impl::printOptionInfo(const Option &O,
|
|
size_t GlobalWidth) const {
|
|
cout << " -" << O.ArgStr;
|
|
|
|
if (const char *ValName = getValueName())
|
|
cout << "=<" << getValueStr(O, ValName) << ">";
|
|
|
|
cout << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - "
|
|
<< O.HelpStr << "\n";
|
|
}
|
|
|
|
|
|
|
|
|
|
// parser<bool> implementation
|
|
//
|
|
bool parser<bool>::parse(Option &O, const char *ArgName,
|
|
const std::string &Arg, bool &Value) {
|
|
if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
|
|
Arg == "1") {
|
|
Value = true;
|
|
} else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
|
|
Value = false;
|
|
} else {
|
|
return O.error(": '" + Arg +
|
|
"' is invalid value for boolean argument! Try 0 or 1");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// parser<boolOrDefault> implementation
|
|
//
|
|
bool parser<boolOrDefault>::parse(Option &O, const char *ArgName,
|
|
const std::string &Arg, boolOrDefault &Value) {
|
|
if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
|
|
Arg == "1") {
|
|
Value = BOU_TRUE;
|
|
} else if (Arg == "false" || Arg == "FALSE"
|
|
|| Arg == "False" || Arg == "0") {
|
|
Value = BOU_FALSE;
|
|
} else {
|
|
return O.error(": '" + Arg +
|
|
"' is invalid value for boolean argument! Try 0 or 1");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// parser<int> implementation
|
|
//
|
|
bool parser<int>::parse(Option &O, const char *ArgName,
|
|
const std::string &Arg, int &Value) {
|
|
char *End;
|
|
Value = (int)strtol(Arg.c_str(), &End, 0);
|
|
if (*End != 0)
|
|
return O.error(": '" + Arg + "' value invalid for integer argument!");
|
|
return false;
|
|
}
|
|
|
|
// parser<unsigned> implementation
|
|
//
|
|
bool parser<unsigned>::parse(Option &O, const char *ArgName,
|
|
const std::string &Arg, unsigned &Value) {
|
|
char *End;
|
|
errno = 0;
|
|
unsigned long V = strtoul(Arg.c_str(), &End, 0);
|
|
Value = (unsigned)V;
|
|
if (((V == ULONG_MAX) && (errno == ERANGE))
|
|
|| (*End != 0)
|
|
|| (Value != V))
|
|
return O.error(": '" + Arg + "' value invalid for uint argument!");
|
|
return false;
|
|
}
|
|
|
|
// parser<double>/parser<float> implementation
|
|
//
|
|
static bool parseDouble(Option &O, const std::string &Arg, double &Value) {
|
|
const char *ArgStart = Arg.c_str();
|
|
char *End;
|
|
Value = strtod(ArgStart, &End);
|
|
if (*End != 0)
|
|
return O.error(": '" +Arg+ "' value invalid for floating point argument!");
|
|
return false;
|
|
}
|
|
|
|
bool parser<double>::parse(Option &O, const char *AN,
|
|
const std::string &Arg, double &Val) {
|
|
return parseDouble(O, Arg, Val);
|
|
}
|
|
|
|
bool parser<float>::parse(Option &O, const char *AN,
|
|
const std::string &Arg, float &Val) {
|
|
double dVal;
|
|
if (parseDouble(O, Arg, dVal))
|
|
return true;
|
|
Val = (float)dVal;
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
// generic_parser_base implementation
|
|
//
|
|
|
|
// findOption - Return the option number corresponding to the specified
|
|
// argument string. If the option is not found, getNumOptions() is returned.
|
|
//
|
|
unsigned generic_parser_base::findOption(const char *Name) {
|
|
unsigned i = 0, e = getNumOptions();
|
|
std::string N(Name);
|
|
|
|
while (i != e)
|
|
if (getOption(i) == N)
|
|
return i;
|
|
else
|
|
++i;
|
|
return e;
|
|
}
|
|
|
|
|
|
// Return the width of the option tag for printing...
|
|
size_t generic_parser_base::getOptionWidth(const Option &O) const {
|
|
if (O.hasArgStr()) {
|
|
size_t Size = std::strlen(O.ArgStr)+6;
|
|
for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
|
|
Size = std::max(Size, std::strlen(getOption(i))+8);
|
|
return Size;
|
|
} else {
|
|
size_t BaseSize = 0;
|
|
for (unsigned i = 0, e = getNumOptions(); i != e; ++i)
|
|
BaseSize = std::max(BaseSize, std::strlen(getOption(i))+8);
|
|
return BaseSize;
|
|
}
|
|
}
|
|
|
|
// printOptionInfo - Print out information about this option. The
|
|
// to-be-maintained width is specified.
|
|
//
|
|
void generic_parser_base::printOptionInfo(const Option &O,
|
|
size_t GlobalWidth) const {
|
|
if (O.hasArgStr()) {
|
|
size_t L = std::strlen(O.ArgStr);
|
|
cout << " -" << O.ArgStr << std::string(GlobalWidth-L-6, ' ')
|
|
<< " - " << O.HelpStr << "\n";
|
|
|
|
for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
|
|
size_t NumSpaces = GlobalWidth-strlen(getOption(i))-8;
|
|
cout << " =" << getOption(i) << std::string(NumSpaces, ' ')
|
|
<< " - " << getDescription(i) << "\n";
|
|
}
|
|
} else {
|
|
if (O.HelpStr[0])
|
|
cout << " " << O.HelpStr << "\n";
|
|
for (unsigned i = 0, e = getNumOptions(); i != e; ++i) {
|
|
size_t L = std::strlen(getOption(i));
|
|
cout << " -" << getOption(i) << std::string(GlobalWidth-L-8, ' ')
|
|
<< " - " << getDescription(i) << "\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// --help and --help-hidden option implementation
|
|
//
|
|
|
|
namespace {
|
|
|
|
class HelpPrinter {
|
|
size_t MaxArgLen;
|
|
const Option *EmptyArg;
|
|
const bool ShowHidden;
|
|
|
|
// isHidden/isReallyHidden - Predicates to be used to filter down arg lists.
|
|
inline static bool isHidden(std::pair<std::string, Option *> &OptPair) {
|
|
return OptPair.second->getOptionHiddenFlag() >= Hidden;
|
|
}
|
|
inline static bool isReallyHidden(std::pair<std::string, Option *> &OptPair) {
|
|
return OptPair.second->getOptionHiddenFlag() == ReallyHidden;
|
|
}
|
|
|
|
public:
|
|
explicit HelpPrinter(bool showHidden) : ShowHidden(showHidden) {
|
|
EmptyArg = 0;
|
|
}
|
|
|
|
void operator=(bool Value) {
|
|
if (Value == false) return;
|
|
|
|
// Get all the options.
|
|
std::vector<Option*> PositionalOpts;
|
|
std::vector<Option*> SinkOpts;
|
|
std::map<std::string, Option*> OptMap;
|
|
GetOptionInfo(PositionalOpts, SinkOpts, OptMap);
|
|
|
|
// Copy Options into a vector so we can sort them as we like...
|
|
std::vector<std::pair<std::string, Option*> > Opts;
|
|
copy(OptMap.begin(), OptMap.end(), std::back_inserter(Opts));
|
|
|
|
// Eliminate Hidden or ReallyHidden arguments, depending on ShowHidden
|
|
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 != Opts.size(); ++i)
|
|
if (OptionSet.count(Opts[i].second) == 0)
|
|
OptionSet.insert(Opts[i].second); // Add new entry to set
|
|
else
|
|
Opts.erase(Opts.begin()+i--); // Erase duplicate
|
|
}
|
|
|
|
if (ProgramOverview)
|
|
cout << "OVERVIEW: " << ProgramOverview << "\n";
|
|
|
|
cout << "USAGE: " << ProgramName << " [options]";
|
|
|
|
// Print out the positional options.
|
|
Option *CAOpt = 0; // The cl::ConsumeAfter option, if it exists...
|
|
if (!PositionalOpts.empty() &&
|
|
PositionalOpts[0]->getNumOccurrencesFlag() == ConsumeAfter)
|
|
CAOpt = PositionalOpts[0];
|
|
|
|
for (size_t i = CAOpt != 0, e = PositionalOpts.size(); i != e; ++i) {
|
|
if (PositionalOpts[i]->ArgStr[0])
|
|
cout << " --" << PositionalOpts[i]->ArgStr;
|
|
cout << " " << PositionalOpts[i]->HelpStr;
|
|
}
|
|
|
|
// Print the consume after option info if it exists...
|
|
if (CAOpt) cout << " " << CAOpt->HelpStr;
|
|
|
|
cout << "\n\n";
|
|
|
|
// Compute the maximum argument length...
|
|
MaxArgLen = 0;
|
|
for (size_t i = 0, e = Opts.size(); i != e; ++i)
|
|
MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth());
|
|
|
|
cout << "OPTIONS:\n";
|
|
for (size_t 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
|
|
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";
|
|
cout << " Built " << __DATE__ << "(" << __TIME__ << ").\n";
|
|
cout << "\n";
|
|
cout << " Registered Targets:\n";
|
|
|
|
size_t Width = 0;
|
|
for (TargetRegistry::iterator it = TargetRegistry::begin(),
|
|
ie = TargetRegistry::end(); it != ie; ++it)
|
|
Width = std::max(Width, ::strlen(it->getName()));
|
|
|
|
unsigned NumTargets = 0;
|
|
for (TargetRegistry::iterator it = TargetRegistry::begin(),
|
|
ie = TargetRegistry::end(); it != ie; ++it, ++NumTargets) {
|
|
cout << " " << it->getName()
|
|
<< std::string(Width - ::strlen(it->getName()), ' ') << " - "
|
|
<< it->getShortDescription() << "\n";
|
|
}
|
|
if (!NumTargets)
|
|
cout << " (none)\n";
|
|
}
|
|
void operator=(bool OptionWasSpecified) {
|
|
if (OptionWasSpecified) {
|
|
if (OverrideVersionPrinter == 0) {
|
|
print();
|
|
exit(1);
|
|
} else {
|
|
(*OverrideVersionPrinter)();
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
} // End anonymous namespace
|
|
|
|
|
|
// Define the --version option that prints out the LLVM version for the tool
|
|
static VersionPrinter VersionPrinterInstance;
|
|
|
|
static cl::opt<VersionPrinter, true, parser<bool> >
|
|
VersOp("version", cl::desc("Display the version of this program"),
|
|
cl::location(VersionPrinterInstance), cl::ValueDisallowed);
|
|
|
|
// Utility function for printing the help message.
|
|
void cl::PrintHelpMessage() {
|
|
// This looks weird, but it actually prints the help message. The
|
|
// NormalPrinter variable is a HelpPrinter and the help gets printed when
|
|
// its operator= is invoked. That's because the "normal" usages of the
|
|
// help printer is to be assigned true/false depending on whether the
|
|
// --help option was given or not. Since we're circumventing that we have
|
|
// to make it look like --help was given, so we assign true.
|
|
NormalPrinter = true;
|
|
}
|
|
|
|
/// Utility function for printing version number.
|
|
void cl::PrintVersionMessage() {
|
|
VersionPrinterInstance.print();
|
|
}
|
|
|
|
void cl::SetVersionPrinter(void (*func)()) {
|
|
OverrideVersionPrinter = func;
|
|
}
|