//
//===----------------------------------------------------------------------===//
-#include "llvm/Config/config.h"
-#include "llvm/ADT/OwningPtr.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Config/config.h"
+#include "llvm/Support/ConvertUTF.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Host.h"
#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/Streams.h"
-#include "llvm/System/Path.h"
-#include <algorithm>
-#include <functional>
-#include <map>
-#include <ostream>
-#include <set>
-#include <cstdlib>
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
#include <cerrno>
-#include <cstring>
-#include <climits>
+#include <cstdlib>
+#include <map>
using namespace llvm;
using namespace cl;
//===----------------------------------------------------------------------===//
// Template instantiations and anchors.
//
+namespace llvm { namespace cl {
TEMPLATE_INSTANTIATION(class basic_parser<bool>);
TEMPLATE_INSTANTIATION(class basic_parser<boolOrDefault>);
-TEMPLATE_INSTANTIATION(class basic_parser<boolInverse>);
TEMPLATE_INSTANTIATION(class basic_parser<int>);
TEMPLATE_INSTANTIATION(class basic_parser<unsigned>);
+TEMPLATE_INSTANTIATION(class basic_parser<unsigned long long>);
TEMPLATE_INSTANTIATION(class basic_parser<double>);
TEMPLATE_INSTANTIATION(class basic_parser<float>);
TEMPLATE_INSTANTIATION(class basic_parser<std::string>);
+TEMPLATE_INSTANTIATION(class basic_parser<char>);
TEMPLATE_INSTANTIATION(class opt<unsigned>);
TEMPLATE_INSTANTIATION(class opt<int>);
TEMPLATE_INSTANTIATION(class opt<std::string>);
+TEMPLATE_INSTANTIATION(class opt<char>);
TEMPLATE_INSTANTIATION(class opt<bool>);
+} } // end namespace llvm::cl
+void OptionValue<boolOrDefault>::anchor() {}
+void OptionValue<std::string>::anchor() {}
void Option::anchor() {}
void basic_parser_impl::anchor() {}
void parser<bool>::anchor() {}
void parser<boolOrDefault>::anchor() {}
-void parser<boolInverse>::anchor() {}
void parser<int>::anchor() {}
void parser<unsigned>::anchor() {}
+void parser<unsigned long long>::anchor() {}
void parser<double>::anchor() {}
void parser<float>::anchor() {}
void parser<std::string>::anchor() {}
+void parser<char>::anchor() {}
//===----------------------------------------------------------------------===//
MarkOptionsChanged();
}
+// This collects the different option categories that have been registered.
+typedef SmallPtrSet<OptionCategory*,16> OptionCatSet;
+static ManagedStatic<OptionCatSet> RegisteredOptionCategories;
+
+// Initialise the general option category.
+OptionCategory llvm::cl::GeneralCategory("General options");
+
+void OptionCategory::registerCategory()
+{
+ RegisteredOptionCategories->insert(this);
+}
//===----------------------------------------------------------------------===//
// Basic, shared command line option processing machinery.
/// GetOptionInfo - Scan the list of registered options, turning them into data
/// structures that are easier to handle.
-static void GetOptionInfo(std::vector<Option*> &PositionalOpts,
- std::vector<Option*> &SinkOpts,
- std::map<std::string, Option*> &OptionsMap) {
- std::vector<const char*> OptionNames;
+static void GetOptionInfo(SmallVectorImpl<Option*> &PositionalOpts,
+ SmallVectorImpl<Option*> &SinkOpts,
+ StringMap<Option*> &OptionsMap) {
+ SmallVector<const char*, 16> OptionNames;
Option *CAOpt = 0; // The ConsumeAfter option if it exists.
for (Option *O = RegisteredOptionList; O; O = O->getNextRegisteredOption()) {
// If this option wants to handle multiple option names, get the full set.
// Handle named options.
for (size_t i = 0, e = OptionNames.size(); i != e; ++i) {
// Add argument to the argument map!
- if (!OptionsMap.insert(std::pair<std::string,Option*>(OptionNames[i],
- O)).second) {
- cerr << ProgramName << ": CommandLine Error: Argument '"
+ if (OptionsMap.GetOrCreateValue(OptionNames[i], O).second != O) {
+ errs() << ProgramName << ": CommandLine Error: Argument '"
<< OptionNames[i] << "' defined more than once!\n";
}
}
/// LookupOption - Lookup the option specified by the specified option on the
/// command line. If there is a value specified (after an equal sign) return
-/// that as well.
-static Option *LookupOption(const char *&Arg, const char *&Value,
- std::map<std::string, Option*> &OptionsMap) {
- while (*Arg == '-') ++Arg; // Eat leading dashes
+/// that as well. This assumes that leading dashes have already been stripped.
+static Option *LookupOption(StringRef &Arg, StringRef &Value,
+ const StringMap<Option*> &OptionsMap) {
+ // Reject all dashes.
+ if (Arg.empty()) return 0;
+
+ size_t EqualPos = Arg.find('=');
+
+ // If we have an equals sign, remember the value.
+ if (EqualPos == StringRef::npos) {
+ // Look up the option.
+ StringMap<Option*>::const_iterator I = OptionsMap.find(Arg);
+ return I != OptionsMap.end() ? I->second : 0;
+ }
- const char *ArgEnd = Arg;
- while (*ArgEnd && *ArgEnd != '=')
- ++ArgEnd; // Scan till end of argument name.
+ // If the argument before the = is a valid option name, we match. If not,
+ // return Arg unmolested.
+ StringMap<Option*>::const_iterator I =
+ OptionsMap.find(Arg.substr(0, EqualPos));
+ if (I == OptionsMap.end()) return 0;
- if (*ArgEnd == '=') // If we have an equals sign...
- Value = ArgEnd+1; // Get the value, not the equals
+ Value = Arg.substr(EqualPos+1);
+ Arg = Arg.substr(0, EqualPos);
+ return I->second;
+}
+/// LookupNearestOption - Lookup the closest match to the option specified by
+/// the specified option on the command line. If there is a value specified
+/// (after an equal sign) return that as well. This assumes that leading dashes
+/// have already been stripped.
+static Option *LookupNearestOption(StringRef Arg,
+ const StringMap<Option*> &OptionsMap,
+ std::string &NearestString) {
+ // Reject all dashes.
+ if (Arg.empty()) return 0;
+
+ // Split on any equal sign.
+ std::pair<StringRef, StringRef> SplitArg = Arg.split('=');
+ StringRef &LHS = SplitArg.first; // LHS == Arg when no '=' is present.
+ StringRef &RHS = SplitArg.second;
+
+ // Find the closest match.
+ Option *Best = 0;
+ unsigned BestDistance = 0;
+ for (StringMap<Option*>::const_iterator it = OptionsMap.begin(),
+ ie = OptionsMap.end(); it != ie; ++it) {
+ Option *O = it->second;
+ SmallVector<const char*, 16> OptionNames;
+ O->getExtraOptionNames(OptionNames);
+ if (O->ArgStr[0])
+ OptionNames.push_back(O->ArgStr);
- if (*Arg == 0) return 0;
+ bool PermitValue = O->getValueExpectedFlag() != cl::ValueDisallowed;
+ StringRef Flag = PermitValue ? LHS : Arg;
+ for (size_t i = 0, e = OptionNames.size(); i != e; ++i) {
+ StringRef Name = OptionNames[i];
+ unsigned Distance = StringRef(Name).edit_distance(
+ Flag, /*AllowReplacements=*/true, /*MaxEditDistance=*/BestDistance);
+ if (!Best || Distance < BestDistance) {
+ Best = O;
+ BestDistance = Distance;
+ if (RHS.empty() || !PermitValue)
+ NearestString = OptionNames[i];
+ else
+ NearestString = std::string(OptionNames[i]) + "=" + RHS.str();
+ }
+ }
+ }
+
+ return Best;
+}
+
+/// CommaSeparateAndAddOccurence - A wrapper around Handler->addOccurence() that
+/// does special handling of cl::CommaSeparated options.
+static bool CommaSeparateAndAddOccurence(Option *Handler, unsigned pos,
+ StringRef ArgName,
+ StringRef Value, bool MultiArg = false)
+{
+ // Check to see if this option accepts a comma separated list of values. If
+ // it does, we have to split up the value into multiple values.
+ if (Handler->getMiscFlags() & CommaSeparated) {
+ StringRef Val(Value);
+ StringRef::size_type Pos = Val.find(',');
+
+ while (Pos != StringRef::npos) {
+ // Process the portion before the comma.
+ if (Handler->addOccurrence(pos, ArgName, Val.substr(0, Pos), MultiArg))
+ return true;
+ // Erase the portion before the comma, AND the comma.
+ Val = Val.substr(Pos+1);
+ Value.substr(Pos+1); // Increment the original value pointer as well.
+ // Check for another comma.
+ Pos = Val.find(',');
+ }
- // Look up the option.
- std::map<std::string, Option*>::iterator I =
- OptionsMap.find(std::string(Arg, ArgEnd));
- return I != OptionsMap.end() ? I->second : 0;
+ Value = Val;
+ }
+
+ if (Handler->addOccurrence(pos, ArgName, Value, MultiArg))
+ return true;
+
+ return false;
}
-static inline bool ProvideOption(Option *Handler, const char *ArgName,
- const char *Value, int argc, char **argv,
- int &i) {
+/// ProvideOption - For Value, this differentiates between an empty value ("")
+/// and a null value (StringRef()). The later is accepted for arguments that
+/// don't allow a value (-foo) the former is rejected (-foo=).
+static inline bool ProvideOption(Option *Handler, StringRef ArgName,
+ StringRef Value, int argc,
+ const char *const *argv, int &i) {
// Is this a multi-argument option?
unsigned NumAdditionalVals = Handler->getNumAdditionalVals();
// Enforce value requirements
switch (Handler->getValueExpectedFlag()) {
case ValueRequired:
- if (Value == 0) { // No value specified?
- if (i+1 < argc) { // Steal the next argument, like for '-o filename'
- Value = argv[++i];
- } else {
- return Handler->error(" requires a value!");
- }
+ if (Value.data() == 0) { // No value specified?
+ if (i+1 >= argc)
+ return Handler->error("requires a value!");
+ // Steal the next argument, like for '-o filename'
+ Value = argv[++i];
}
break;
case ValueDisallowed:
if (NumAdditionalVals > 0)
- return Handler->error(": multi-valued option specified"
- " with ValueDisallowed modifier!");
+ return Handler->error("multi-valued option specified"
+ " with ValueDisallowed modifier!");
- if (Value)
- return Handler->error(" does not allow a value! '" +
- std::string(Value) + "' specified.");
+ if (Value.data())
+ return Handler->error("does not allow a value! '" +
+ Twine(Value) + "' specified.");
break;
case ValueOptional:
break;
- default:
- cerr << ProgramName
- << ": Bad ValueMask flag! CommandLine usage error:"
- << Handler->getValueExpectedFlag() << "\n";
- abort();
- break;
}
// If this isn't a multi-arg option, just run the handler.
- if (NumAdditionalVals == 0) {
- return Handler->addOccurrence(i, ArgName, Value ? Value : "");
- }
+ if (NumAdditionalVals == 0)
+ return CommaSeparateAndAddOccurence(Handler, i, ArgName, Value);
+
// If it is, run the handle several times.
- else {
- bool MultiArg = false;
+ bool MultiArg = false;
- if (Value) {
- if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
- return true;
- --NumAdditionalVals;
- MultiArg = true;
- }
+ if (Value.data()) {
+ if (CommaSeparateAndAddOccurence(Handler, i, ArgName, Value, MultiArg))
+ return true;
+ --NumAdditionalVals;
+ MultiArg = true;
+ }
- while (NumAdditionalVals > 0) {
+ while (NumAdditionalVals > 0) {
+ if (i+1 >= argc)
+ return Handler->error("not enough values!");
+ Value = argv[++i];
- if (i+1 < argc) {
- Value = argv[++i];
- } else {
- return Handler->error(": not enough values!");
- }
- if (Handler->addOccurrence(i, ArgName, Value, MultiArg))
- return true;
- MultiArg = true;
- --NumAdditionalVals;
- }
- return false;
+ if (CommaSeparateAndAddOccurence(Handler, i, ArgName, Value, MultiArg))
+ return true;
+ MultiArg = true;
+ --NumAdditionalVals;
}
+ return false;
}
-static bool ProvidePositionalOption(Option *Handler, const std::string &Arg,
- int i) {
+static bool ProvidePositionalOption(Option *Handler, StringRef Arg, int i) {
int Dummy = i;
- return ProvideOption(Handler, Handler->ArgStr, Arg.c_str(), 0, 0, Dummy);
+ return ProvideOption(Handler, Handler->ArgStr, Arg, 0, 0, Dummy);
}
// see if there options that satisfy the predicate. If we find one, return it,
// otherwise return null.
//
-static Option *getOptionPred(std::string Name, size_t &Length,
+static Option *getOptionPred(StringRef Name, size_t &Length,
bool (*Pred)(const Option*),
- std::map<std::string, Option*> &OptionsMap) {
+ const StringMap<Option*> &OptionsMap) {
- std::map<std::string, Option*>::iterator OMI = OptionsMap.find(Name);
- if (OMI != OptionsMap.end() && Pred(OMI->second)) {
- Length = Name.length();
- return OMI->second;
- }
+ StringMap<Option*>::const_iterator OMI = OptionsMap.find(Name);
- if (Name.size() == 1) return 0;
- do {
- Name.erase(Name.end()-1, Name.end()); // Chop off the last character...
+ // Loop while we haven't found an option and Name still has at least two
+ // characters in it (so that the next iteration will not be the empty
+ // string.
+ while (OMI == OptionsMap.end() && Name.size() > 1) {
+ Name = Name.substr(0, Name.size()-1); // Chop off the last character.
OMI = OptionsMap.find(Name);
-
- // Loop while we haven't found an option and Name still has at least two
- // characters in it (so that the next iteration will not be the empty
- // string...
- } while ((OMI == OptionsMap.end() || !Pred(OMI->second)) && Name.size() > 1);
+ }
if (OMI != OptionsMap.end() && Pred(OMI->second)) {
- Length = Name.length();
+ Length = Name.size();
return OMI->second; // Found one!
}
return 0; // No option found!
}
+/// HandlePrefixedOrGroupedOption - The specified argument string (which started
+/// with at least one '-') does not fully match an available option. Check to
+/// see if this is a prefix or grouped option. If so, split arg into output an
+/// Arg/Value pair and return the Option to parse it with.
+static Option *HandlePrefixedOrGroupedOption(StringRef &Arg, StringRef &Value,
+ bool &ErrorParsing,
+ const StringMap<Option*> &OptionsMap) {
+ if (Arg.size() == 1) return 0;
+
+ // Do the lookup!
+ size_t Length = 0;
+ Option *PGOpt = getOptionPred(Arg, Length, isPrefixedOrGrouping, OptionsMap);
+ if (PGOpt == 0) return 0;
+
+ // If the option is a prefixed option, then the value is simply the
+ // rest of the name... so fall through to later processing, by
+ // setting up the argument name flags and value fields.
+ if (PGOpt->getFormattingFlag() == cl::Prefix) {
+ Value = Arg.substr(Length);
+ Arg = Arg.substr(0, Length);
+ assert(OptionsMap.count(Arg) && OptionsMap.find(Arg)->second == PGOpt);
+ return PGOpt;
+ }
+
+ // This must be a grouped option... handle them now. Grouping options can't
+ // have values.
+ assert(isGrouping(PGOpt) && "Broken getOptionPred!");
+
+ do {
+ // Move current arg name out of Arg into OneArgName.
+ StringRef OneArgName = Arg.substr(0, Length);
+ Arg = Arg.substr(Length);
+
+ // Because ValueRequired is an invalid flag for grouped arguments,
+ // we don't need to pass argc/argv in.
+ assert(PGOpt->getValueExpectedFlag() != cl::ValueRequired &&
+ "Option can not be cl::Grouping AND cl::ValueRequired!");
+ int Dummy = 0;
+ ErrorParsing |= ProvideOption(PGOpt, OneArgName,
+ StringRef(), 0, 0, Dummy);
+
+ // Get the next grouping option.
+ PGOpt = getOptionPred(Arg, Length, isGrouping, OptionsMap);
+ } while (PGOpt && Length != Arg.size());
+
+ // Return the last option with Arg cut down to just the last one.
+ return PGOpt;
+}
+
+
+
static bool RequiresValue(const Option *O) {
return O->getNumOccurrencesFlag() == cl::Required ||
O->getNumOccurrencesFlag() == cl::OneOrMore;
O->getNumOccurrencesFlag() == cl::OneOrMore;
}
-/// ParseCStringVector - Break INPUT up wherever one or more
-/// whitespace characters are found, and store the resulting tokens in
-/// OUTPUT. The tokens stored in OUTPUT are dynamically allocated
-/// using strdup (), so it is the caller's responsibility to free ()
-/// them later.
+static bool isWhitespace(char C) {
+ return strchr(" \t\n\r\f\v", C);
+}
+
+static bool isQuote(char C) {
+ return C == '\"' || C == '\'';
+}
+
+static bool isGNUSpecial(char C) {
+ return strchr("\\\"\' ", C);
+}
+
+void cl::TokenizeGNUCommandLine(StringRef Src, StringSaver &Saver,
+ SmallVectorImpl<const char *> &NewArgv) {
+ SmallString<128> Token;
+ for (size_t I = 0, E = Src.size(); I != E; ++I) {
+ // Consume runs of whitespace.
+ if (Token.empty()) {
+ while (I != E && isWhitespace(Src[I]))
+ ++I;
+ if (I == E) break;
+ }
+
+ // Backslashes can escape backslashes, spaces, and other quotes. Otherwise
+ // they are literal. This makes it much easier to read Windows file paths.
+ if (I + 1 < E && Src[I] == '\\' && isGNUSpecial(Src[I + 1])) {
+ ++I; // Skip the escape.
+ Token.push_back(Src[I]);
+ continue;
+ }
+
+ // Consume a quoted string.
+ if (isQuote(Src[I])) {
+ char Quote = Src[I++];
+ while (I != E && Src[I] != Quote) {
+ // Backslashes are literal, unless they escape a special character.
+ if (Src[I] == '\\' && I + 1 != E && isGNUSpecial(Src[I + 1]))
+ ++I;
+ Token.push_back(Src[I]);
+ ++I;
+ }
+ if (I == E) break;
+ continue;
+ }
+
+ // End the token if this is whitespace.
+ if (isWhitespace(Src[I])) {
+ if (!Token.empty())
+ NewArgv.push_back(Saver.SaveString(Token.c_str()));
+ Token.clear();
+ continue;
+ }
+
+ // This is a normal character. Append it.
+ Token.push_back(Src[I]);
+ }
+
+ // Append the last token after hitting EOF with no whitespace.
+ if (!Token.empty())
+ NewArgv.push_back(Saver.SaveString(Token.c_str()));
+}
+
+/// Backslashes are interpreted in a rather complicated way in the Windows-style
+/// command line, because backslashes are used both to separate path and to
+/// escape double quote. This method consumes runs of backslashes as well as the
+/// following double quote if it's escaped.
///
-static void ParseCStringVector(std::vector<char *> &output,
- const char *input) {
- // Characters which will be treated as token separators:
- static const char *const delims = " \v\f\t\r\n";
-
- std::string work (input);
- // Skip past any delims at head of input string.
- size_t pos = work.find_first_not_of (delims);
- // If the string consists entirely of delims, then exit early.
- if (pos == std::string::npos) return;
- // Otherwise, jump forward to beginning of first word.
- work = work.substr (pos);
- // Find position of first delimiter.
- pos = work.find_first_of (delims);
-
- while (!work.empty() && pos != std::string::npos) {
- // Everything from 0 to POS is the next word to copy.
- output.push_back (strdup (work.substr (0,pos).c_str ()));
- // Is there another word in the string?
- size_t nextpos = work.find_first_not_of (delims, pos + 1);
- if (nextpos != std::string::npos) {
- // Yes? Then remove delims from beginning ...
- work = work.substr (work.find_first_not_of (delims, pos + 1));
- // and find the end of the word.
- pos = work.find_first_of (delims);
- } else {
- // No? (Remainder of string is delims.) End the loop.
- work = "";
- pos = std::string::npos;
+/// * If an even number of backslashes is followed by a double quote, one
+/// backslash is output for every pair of backslashes, and the last double
+/// quote remains unconsumed. The double quote will later be interpreted as
+/// the start or end of a quoted string in the main loop outside of this
+/// function.
+///
+/// * If an odd number of backslashes is followed by a double quote, one
+/// backslash is output for every pair of backslashes, and a double quote is
+/// output for the last pair of backslash-double quote. The double quote is
+/// consumed in this case.
+///
+/// * Otherwise, backslashes are interpreted literally.
+static size_t parseBackslash(StringRef Src, size_t I, SmallString<128> &Token) {
+ size_t E = Src.size();
+ int BackslashCount = 0;
+ // Skip the backslashes.
+ do {
+ ++I;
+ ++BackslashCount;
+ } while (I != E && Src[I] == '\\');
+
+ bool FollowedByDoubleQuote = (I != E && Src[I] == '"');
+ if (FollowedByDoubleQuote) {
+ Token.append(BackslashCount / 2, '\\');
+ if (BackslashCount % 2 == 0)
+ return I - 1;
+ Token.push_back('"');
+ return I;
+ }
+ Token.append(BackslashCount, '\\');
+ return I - 1;
+}
+
+void cl::TokenizeWindowsCommandLine(StringRef Src, StringSaver &Saver,
+ SmallVectorImpl<const char *> &NewArgv) {
+ SmallString<128> Token;
+
+ // This is a small state machine to consume characters until it reaches the
+ // end of the source string.
+ enum { INIT, UNQUOTED, QUOTED } State = INIT;
+ for (size_t I = 0, E = Src.size(); I != E; ++I) {
+ // INIT state indicates that the current input index is at the start of
+ // the string or between tokens.
+ if (State == INIT) {
+ if (isWhitespace(Src[I]))
+ continue;
+ if (Src[I] == '"') {
+ State = QUOTED;
+ continue;
+ }
+ if (Src[I] == '\\') {
+ I = parseBackslash(Src, I, Token);
+ State = UNQUOTED;
+ continue;
+ }
+ Token.push_back(Src[I]);
+ State = UNQUOTED;
+ continue;
+ }
+
+ // UNQUOTED state means that it's reading a token not quoted by double
+ // quotes.
+ if (State == UNQUOTED) {
+ // Whitespace means the end of the token.
+ if (isWhitespace(Src[I])) {
+ NewArgv.push_back(Saver.SaveString(Token.c_str()));
+ Token.clear();
+ State = INIT;
+ continue;
+ }
+ if (Src[I] == '"') {
+ State = QUOTED;
+ continue;
+ }
+ if (Src[I] == '\\') {
+ I = parseBackslash(Src, I, Token);
+ continue;
+ }
+ Token.push_back(Src[I]);
+ continue;
+ }
+
+ // QUOTED state means that it's reading a token quoted by double quotes.
+ if (State == QUOTED) {
+ if (Src[I] == '"') {
+ State = UNQUOTED;
+ continue;
+ }
+ if (Src[I] == '\\') {
+ I = parseBackslash(Src, I, Token);
+ continue;
+ }
+ Token.push_back(Src[I]);
}
}
+ // Append the last token after hitting EOF with no whitespace.
+ if (!Token.empty())
+ NewArgv.push_back(Saver.SaveString(Token.c_str()));
+}
+
+static bool ExpandResponseFile(const char *FName, StringSaver &Saver,
+ TokenizerCallback Tokenizer,
+ SmallVectorImpl<const char *> &NewArgv) {
+ OwningPtr<MemoryBuffer> MemBuf;
+ if (MemoryBuffer::getFile(FName, MemBuf))
+ return false;
+ StringRef Str(MemBuf->getBufferStart(), MemBuf->getBufferSize());
+
+ // If we have a UTF-16 byte order mark, convert to UTF-8 for parsing.
+ ArrayRef<char> BufRef(MemBuf->getBufferStart(), MemBuf->getBufferEnd());
+ std::string UTF8Buf;
+ if (hasUTF16ByteOrderMark(BufRef)) {
+ if (!convertUTF16ToUTF8String(BufRef, UTF8Buf))
+ return false;
+ Str = StringRef(UTF8Buf);
+ }
+
+ // Tokenize the contents into NewArgv.
+ Tokenizer(Str, Saver, NewArgv);
+
+ return true;
+}
+
+/// \brief Expand response files on a command line recursively using the given
+/// StringSaver and tokenization strategy.
+bool cl::ExpandResponseFiles(StringSaver &Saver, TokenizerCallback Tokenizer,
+ SmallVectorImpl<const char *> &Argv) {
+ unsigned RspFiles = 0;
+ bool AllExpanded = false;
+
+ // Don't cache Argv.size() because it can change.
+ for (unsigned I = 0; I != Argv.size(); ) {
+ const char *Arg = Argv[I];
+ if (Arg[0] != '@') {
+ ++I;
+ continue;
+ }
- // If `input' ended with non-delim char, then we'll get here with
- // the last word of `input' in `work'; copy it now.
- if (!work.empty ()) {
- output.push_back (strdup (work.c_str ()));
+ // If we have too many response files, leave some unexpanded. This avoids
+ // crashing on self-referential response files.
+ if (RspFiles++ > 20)
+ return false;
+
+ // Replace this response file argument with the tokenization of its
+ // contents. Nested response files are expanded in subsequent iterations.
+ // FIXME: If a nested response file uses a relative path, is it relative to
+ // the cwd of the process or the response file?
+ SmallVector<const char *, 0> ExpandedArgv;
+ if (!ExpandResponseFile(Arg + 1, Saver, Tokenizer, ExpandedArgv)) {
+ AllExpanded = false;
+ continue;
+ }
+ Argv.erase(Argv.begin() + I);
+ Argv.insert(Argv.begin() + I, ExpandedArgv.begin(), ExpandedArgv.end());
}
+ return AllExpanded;
+}
+
+namespace {
+ class StrDupSaver : public StringSaver {
+ std::vector<char*> Dups;
+ public:
+ ~StrDupSaver() {
+ for (std::vector<char *>::iterator I = Dups.begin(), E = Dups.end();
+ I != E; ++I) {
+ char *Dup = *I;
+ free(Dup);
+ }
+ }
+ const char *SaveString(const char *Str) LLVM_OVERRIDE {
+ char *Dup = strdup(Str);
+ Dups.push_back(Dup);
+ return Dup;
+ }
+ };
}
/// ParseEnvironmentOptions - An alternative entry point to the
/// an environment variable (whose name is given in ENVVAR).
///
void cl::ParseEnvironmentOptions(const char *progName, const char *envVar,
- const char *Overview, bool ReadResponseFiles) {
+ const char *Overview) {
// Check args.
assert(progName && "Program name not specified");
assert(envVar && "Environment variable name missing");
// Get program's "name", which we wouldn't know without the caller
// telling us.
- std::vector<char*> newArgv;
- newArgv.push_back(strdup(progName));
+ SmallVector<const char *, 20> newArgv;
+ StrDupSaver Saver;
+ newArgv.push_back(Saver.SaveString(progName));
// Parse the value of the environment variable into a "command line"
// and hand it off to ParseCommandLineOptions().
- ParseCStringVector(newArgv, envValue);
+ TokenizeGNUCommandLine(envValue, Saver, newArgv);
int newArgc = static_cast<int>(newArgv.size());
- ParseCommandLineOptions(newArgc, &newArgv[0], Overview, ReadResponseFiles);
-
- // Free all the strdup()ed strings.
- for (std::vector<char*>::iterator i = newArgv.begin(), e = newArgv.end();
- i != e; ++i)
- free (*i);
-}
-
-
-/// ExpandResponseFiles - Copy the contents of argv into newArgv,
-/// substituting the contents of the response files for the arguments
-/// of type @file.
-static void ExpandResponseFiles(int argc, char** argv,
- std::vector<char*>& newArgv) {
- for (int i = 1; i != argc; ++i) {
- char* arg = argv[i];
-
- if (arg[0] == '@') {
-
- sys::PathWithStatus respFile(++arg);
-
- // Check that the response file is not empty (mmap'ing empty
- // files can be problematic).
- const sys::FileStatus *FileStat = respFile.getFileStatus();
- if (FileStat && FileStat->getSize() != 0) {
-
- // Mmap the response file into memory.
- OwningPtr<MemoryBuffer>
- respFilePtr(MemoryBuffer::getFile(respFile.c_str()));
-
- // If we could open the file, parse its contents, otherwise
- // pass the @file option verbatim.
-
- // TODO: we should also support recursive loading of response files,
- // since this is how gcc behaves. (From their man page: "The file may
- // itself contain additional @file options; any such options will be
- // processed recursively.")
-
- if (respFilePtr != 0) {
- ParseCStringVector(newArgv, respFilePtr->getBufferStart());
- continue;
- }
- }
- }
- newArgv.push_back(strdup(arg));
- }
+ ParseCommandLineOptions(newArgc, &newArgv[0], Overview);
}
-void cl::ParseCommandLineOptions(int argc, char **argv,
- const char *Overview, bool ReadResponseFiles) {
+void cl::ParseCommandLineOptions(int argc, const char * const *argv,
+ const char *Overview) {
// Process all registered options.
- std::vector<Option*> PositionalOpts;
- std::vector<Option*> SinkOpts;
- std::map<std::string, Option*> Opts;
+ SmallVector<Option*, 4> PositionalOpts;
+ SmallVector<Option*, 4> SinkOpts;
+ StringMap<Option*> Opts;
GetOptionInfo(PositionalOpts, SinkOpts, Opts);
assert((!Opts.empty() || !PositionalOpts.empty()) &&
"No options specified!");
// Expand response files.
- std::vector<char*> newArgv;
- if (ReadResponseFiles) {
- newArgv.push_back(strdup(argv[0]));
- ExpandResponseFiles(argc, argv, newArgv);
- argv = &newArgv[0];
- argc = static_cast<int>(newArgv.size());
- }
+ SmallVector<const char *, 20> newArgv;
+ for (int i = 0; i != argc; ++i)
+ newArgv.push_back(argv[i]);
+ StrDupSaver Saver;
+ ExpandResponseFiles(Saver, TokenizeGNUCommandLine, newArgv);
+ argv = &newArgv[0];
+ argc = static_cast<int>(newArgv.size());
// Copy the program name into ProgName, making sure not to overflow it.
- std::string ProgName = sys::Path(argv[0]).getLast();
- if (ProgName.size() > 79) ProgName.resize(79);
- strcpy(ProgramName, ProgName.c_str());
+ std::string ProgName = sys::path::filename(argv[0]);
+ size_t Len = std::min(ProgName.size(), size_t(79));
+ memcpy(ProgramName, ProgName.data(), Len);
+ ProgramName[Len] = '\0';
ProgramOverview = Overview;
bool ErrorParsing = false;
// unless there is only one positional argument...
if (PositionalOpts.size() > 2)
ErrorParsing |=
- Opt->error(" error - this positional option will never be matched, "
+ Opt->error("error - this positional option will never be matched, "
"because it does not Require a value, and a "
"cl::ConsumeAfter option is active!");
} else if (UnboundedFound && !Opt->ArgStr[0]) {
// not specified after an option that eats all extra arguments, or this
// one will never get any!
//
- ErrorParsing |= Opt->error(" error - option can never match, because "
+ ErrorParsing |= Opt->error("error - option can never match, because "
"another positional argument will match an "
"unbounded number of values, and this option"
" does not require a value!");
}
// PositionalVals - A vector of "positional" arguments we accumulate into
- // the process at the end...
+ // the process at the end.
//
- std::vector<std::pair<std::string,unsigned> > PositionalVals;
+ SmallVector<std::pair<StringRef,unsigned>, 4> PositionalVals;
// If the program has named positional arguments, and the name has been run
// across, keep track of which positional argument was named. Otherwise put
bool DashDashFound = false; // Have we read '--'?
for (int i = 1; i < argc; ++i) {
Option *Handler = 0;
- const char *Value = 0;
- const char *ArgName = "";
+ Option *NearestHandler = 0;
+ std::string NearestHandlerString;
+ StringRef Value;
+ StringRef ArgName = "";
// If the option list changed, this means that some command line
// option has just been registered or deregistered. This can occur in
if (ActivePositionalArg) {
ProvidePositionalOption(ActivePositionalArg, argv[i], i);
continue; // We are done!
- } else if (!PositionalOpts.empty()) {
+ }
+
+ if (!PositionalOpts.empty()) {
PositionalVals.push_back(std::make_pair(argv[i],i));
// All of the positional arguments have been fulfulled, give the rest to
// option is another positional argument. If so, treat it as an argument,
// otherwise feed it to the eating positional.
ArgName = argv[i]+1;
+ // Eat leading dashes.
+ while (!ArgName.empty() && ArgName[0] == '-')
+ ArgName = ArgName.substr(1);
+
Handler = LookupOption(ArgName, Value, Opts);
if (!Handler || Handler->getFormattingFlag() != cl::Positional) {
ProvidePositionalOption(ActivePositionalArg, argv[i], i);
continue; // We are done!
}
- } else { // We start with a '-', must be an argument...
+ } else { // We start with a '-', must be an argument.
ArgName = argv[i]+1;
+ // Eat leading dashes.
+ while (!ArgName.empty() && ArgName[0] == '-')
+ ArgName = ArgName.substr(1);
+
Handler = LookupOption(ArgName, Value, Opts);
// Check to see if this "option" is really a prefixed or grouped argument.
- if (Handler == 0) {
- 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)
+ Handler = HandlePrefixedOrGroupedOption(ArgName, Value,
+ ErrorParsing, Opts);
+
+ // Otherwise, look for the closest available option to report to the user
+ // in the upcoming error.
+ if (Handler == 0 && SinkOpts.empty())
+ NearestHandler = LookupNearestOption(ArgName, Opts,
+ NearestHandlerString);
}
if (Handler == 0) {
if (SinkOpts.empty()) {
- cerr << ProgramName << ": Unknown command line argument '"
- << argv[i] << "'. Try: '" << argv[0] << " --help'\n";
+ errs() << ProgramName << ": Unknown command line argument '"
+ << argv[i] << "'. Try: '" << argv[0] << " -help'\n";
+
+ if (NearestHandler) {
+ // If we know a near match, report it as well.
+ errs() << ProgramName << ": Did you mean '-"
+ << NearestHandlerString << "'?\n";
+ }
+
ErrorParsing = true;
} else {
- for (std::vector<Option*>::iterator I = SinkOpts.begin(),
+ for (SmallVectorImpl<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)
// Check and handle positional arguments now...
if (NumPositionalRequired > PositionalVals.size()) {
- cerr << ProgramName
+ errs() << ProgramName
<< ": Not enough positional command line arguments specified!\n"
<< "Must specify at least " << NumPositionalRequired
- << " positional arguments: See: " << argv[0] << " --help\n";
+ << " positional arguments: See: " << argv[0] << " -help\n";
ErrorParsing = true;
- } else if (!HasUnlimitedPositionals
- && PositionalVals.size() > PositionalOpts.size()) {
- cerr << ProgramName
+ } else if (!HasUnlimitedPositionals &&
+ PositionalVals.size() > PositionalOpts.size()) {
+ errs() << ProgramName
<< ": Too many positional arguments specified!\n"
<< "Can specify at most " << PositionalOpts.size()
- << " positional arguments: See: " << argv[0] << " --help\n";
+ << " positional arguments: See: " << argv[0] << " -help\n";
ErrorParsing = true;
} else if (ConsumeAfterOpt == 0) {
- // Positional args have already been handled if ConsumeAfter is specified...
+ // 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])) {
ValNo++;
break;
default:
- assert(0 && "Internal error, unexpected NumOccurrences flag in "
+ llvm_unreachable("Internal error, unexpected NumOccurrences flag in "
"positional argument processing!");
}
}
}
// Loop over args and make sure all required args are specified!
- for (std::map<std::string, Option*>::iterator I = Opts.begin(),
+ for (StringMap<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!");
+ I->second->error("must be specified at least once!");
ErrorParsing = true;
}
// Fall through
}
}
+ // Now that we know if -debug is specified, we can use it.
+ // Note that if ReadResponseFiles == true, this must be done before the
+ // memory allocated for the expanded command line is free()d below.
+ DEBUG(dbgs() << "Args: ";
+ for (int i = 0; i < argc; ++i)
+ dbgs() << argv[i] << ' ';
+ dbgs() << '\n';
+ );
+
// Free all of the memory allocated to the map. Command line options may only
// be processed once!
Opts.clear();
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
+bool Option::error(const Twine &Message, StringRef ArgName) {
+ if (ArgName.data() == 0) ArgName = ArgStr;
+ if (ArgName.empty())
+ errs() << HelpStr; // Be nice for positional arguments
else
- cerr << ProgramName << ": for the -" << ArgName;
+ errs() << ProgramName << ": for the -" << ArgName;
- cerr << " option: " << Message << "\n";
+ errs() << " option: " << Message << "\n";
return true;
}
-bool Option::addOccurrence(unsigned pos, const char *ArgName,
- const std::string &Value,
- bool MultiArg) {
+bool Option::addOccurrence(unsigned pos, StringRef ArgName,
+ StringRef 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);
+ return error("may only occur zero or one times!", ArgName);
break;
case Required:
if (NumOccurrences > 1)
- return error(": must occur exactly one time!", ArgName);
+ 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);
return std::strlen(ArgStr)+6;
}
+static void printHelpStr(StringRef HelpStr, size_t Indent,
+ size_t FirstLineIndentedBy) {
+ std::pair<StringRef, StringRef> Split = HelpStr.split('\n');
+ outs().indent(Indent - FirstLineIndentedBy) << " - " << Split.first << "\n";
+ while (!Split.second.empty()) {
+ Split = Split.second.split('\n');
+ outs().indent(Indent) << Split.first << "\n";
+ }
+}
+
// Print out the option for the alias.
void alias::printOptionInfo(size_t GlobalWidth) const {
- size_t L = std::strlen(ArgStr);
- cout << " -" << ArgStr << std::string(GlobalWidth-L-6, ' ') << " - "
- << HelpStr << "\n";
+ outs() << " -" << ArgStr;
+ printHelpStr(HelpStr, GlobalWidth, std::strlen(ArgStr) + 6);
}
-
-
//===----------------------------------------------------------------------===//
// Parser Implementation code...
//
//
void basic_parser_impl::printOptionInfo(const Option &O,
size_t GlobalWidth) const {
- cout << " -" << O.ArgStr;
+ outs() << " -" << O.ArgStr;
if (const char *ValName = getValueName())
- cout << "=<" << getValueStr(O, ValName) << ">";
+ outs() << "=<" << getValueStr(O, ValName) << '>';
- cout << std::string(GlobalWidth-getOptionWidth(O), ' ') << " - "
- << O.HelpStr << "\n";
+ printHelpStr(O.HelpStr, GlobalWidth, getOptionWidth(O));
}
-
+void basic_parser_impl::printOptionName(const Option &O,
+ size_t GlobalWidth) const {
+ outs() << " -" << O.ArgStr;
+ outs().indent(GlobalWidth-std::strlen(O.ArgStr));
+}
// parser<bool> implementation
//
-bool parser<bool>::parse(Option &O, const char *ArgName,
- const std::string &Arg, bool &Value) {
+bool parser<bool>::parse(Option &O, StringRef ArgName,
+ StringRef Arg, bool &Value) {
if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
Arg == "1") {
Value = true;
- } else if (Arg == "false" || Arg == "FALSE" || Arg == "False" || Arg == "0") {
+ return false;
+ }
+
+ 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;
}
- return false;
+ return O.error("'" + Arg +
+ "' is invalid value for boolean argument! Try 0 or 1");
}
// parser<boolOrDefault> implementation
//
-bool parser<boolOrDefault>::parse(Option &O, const char *ArgName,
- const std::string &Arg, boolOrDefault &Value) {
+bool parser<boolOrDefault>::parse(Option &O, StringRef ArgName,
+ StringRef 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") {
+ return false;
+ }
+ 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;
}
- return false;
+
+ return O.error("'" + Arg +
+ "' is invalid value for boolean argument! Try 0 or 1");
}
-// parser<boolInverse> implementation
+// parser<int> implementation
//
-bool parser<boolInverse>::parse(Option &O, const char *ArgName,
- const std::string &Arg, bool &Value) {
- if (Arg == "" || Arg == "true" || Arg == "TRUE" || Arg == "True" ||
- Arg == "1") {
- Value = false;
- } else if (Arg == "false" || Arg == "FALSE"
- || Arg == "False" || Arg == "0") {
- Value = true;
- } else {
- return O.error(": '" + Arg +
- "' is invalid value for boolean argument! Try 0 or 1");
- }
+bool parser<int>::parse(Option &O, StringRef ArgName,
+ StringRef Arg, int &Value) {
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for integer argument!");
return false;
}
-// parser<int> implementation
+// parser<unsigned> 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!");
+bool parser<unsigned>::parse(Option &O, StringRef ArgName,
+ StringRef Arg, unsigned &Value) {
+
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for uint argument!");
return false;
}
-// parser<unsigned> implementation
+// parser<unsigned long long> 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!");
+bool parser<unsigned long long>::parse(Option &O, StringRef ArgName,
+ StringRef Arg, unsigned long long &Value){
+
+ if (Arg.getAsInteger(0, Value))
+ return O.error("'" + Arg + "' value invalid for uint argument!");
return false;
}
// parser<double>/parser<float> implementation
//
-static bool parseDouble(Option &O, const std::string &Arg, double &Value) {
- const char *ArgStart = Arg.c_str();
+static bool parseDouble(Option &O, StringRef Arg, double &Value) {
+ SmallString<32> TmpStr(Arg.begin(), Arg.end());
+ const char *ArgStart = TmpStr.c_str();
char *End;
Value = strtod(ArgStart, &End);
if (*End != 0)
- return O.error(": '" +Arg+ "' value invalid for floating point argument!");
+ 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) {
+bool parser<double>::parse(Option &O, StringRef ArgName,
+ StringRef Arg, double &Val) {
return parseDouble(O, Arg, Val);
}
-bool parser<float>::parse(Option &O, const char *AN,
- const std::string &Arg, float &Val) {
+bool parser<float>::parse(Option &O, StringRef ArgName,
+ StringRef Arg, float &Val) {
double dVal;
if (parseDouble(O, Arg, dVal))
return true;
// 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);
+ unsigned e = getNumOptions();
- while (i != e)
- if (getOption(i) == N)
+ for (unsigned i = 0; i != e; ++i) {
+ if (strcmp(getOption(i), Name) == 0)
return i;
- else
- ++i;
+ }
return e;
}
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";
+ outs() << " -" << O.ArgStr;
+ printHelpStr(O.HelpStr, GlobalWidth, std::strlen(O.ArgStr) + 6);
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";
+ outs() << " =" << getOption(i);
+ outs().indent(NumSpaces) << " - " << getDescription(i) << '\n';
}
} else {
if (O.HelpStr[0])
- cout << " " << O.HelpStr << "\n";
+ outs() << " " << 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";
+ const char *Option = getOption(i);
+ outs() << " -" << Option;
+ printHelpStr(getDescription(i), GlobalWidth, std::strlen(Option) + 8);
+ }
+ }
+}
+
+static const size_t MaxOptWidth = 8; // arbitrary spacing for printOptionDiff
+
+// printGenericOptionDiff - Print the value of this option and it's default.
+//
+// "Generic" options have each value mapped to a name.
+void generic_parser_base::
+printGenericOptionDiff(const Option &O, const GenericOptionValue &Value,
+ const GenericOptionValue &Default,
+ size_t GlobalWidth) const {
+ outs() << " -" << O.ArgStr;
+ outs().indent(GlobalWidth-std::strlen(O.ArgStr));
+
+ unsigned NumOpts = getNumOptions();
+ for (unsigned i = 0; i != NumOpts; ++i) {
+ if (Value.compare(getOptionValue(i)))
+ continue;
+
+ outs() << "= " << getOption(i);
+ size_t L = std::strlen(getOption(i));
+ size_t NumSpaces = MaxOptWidth > L ? MaxOptWidth - L : 0;
+ outs().indent(NumSpaces) << " (default: ";
+ for (unsigned j = 0; j != NumOpts; ++j) {
+ if (Default.compare(getOptionValue(j)))
+ continue;
+ outs() << getOption(j);
+ break;
}
+ outs() << ")\n";
+ return;
}
+ outs() << "= *unknown option value*\n";
+}
+
+// printOptionDiff - Specializations for printing basic value types.
+//
+#define PRINT_OPT_DIFF(T) \
+ void parser<T>:: \
+ printOptionDiff(const Option &O, T V, OptionValue<T> D, \
+ size_t GlobalWidth) const { \
+ printOptionName(O, GlobalWidth); \
+ std::string Str; \
+ { \
+ raw_string_ostream SS(Str); \
+ SS << V; \
+ } \
+ outs() << "= " << Str; \
+ size_t NumSpaces = MaxOptWidth > Str.size() ? MaxOptWidth - Str.size() : 0;\
+ outs().indent(NumSpaces) << " (default: "; \
+ if (D.hasValue()) \
+ outs() << D.getValue(); \
+ else \
+ outs() << "*no default*"; \
+ outs() << ")\n"; \
+ } \
+
+PRINT_OPT_DIFF(bool)
+PRINT_OPT_DIFF(boolOrDefault)
+PRINT_OPT_DIFF(int)
+PRINT_OPT_DIFF(unsigned)
+PRINT_OPT_DIFF(unsigned long long)
+PRINT_OPT_DIFF(double)
+PRINT_OPT_DIFF(float)
+PRINT_OPT_DIFF(char)
+
+void parser<std::string>::
+printOptionDiff(const Option &O, StringRef V, OptionValue<std::string> D,
+ size_t GlobalWidth) const {
+ printOptionName(O, GlobalWidth);
+ outs() << "= " << V;
+ size_t NumSpaces = MaxOptWidth > V.size() ? MaxOptWidth - V.size() : 0;
+ outs().indent(NumSpaces) << " (default: ";
+ if (D.hasValue())
+ outs() << D.getValue();
+ else
+ outs() << "*no default*";
+ outs() << ")\n";
}
+// Print a placeholder for options that don't yet support printOptionDiff().
+void basic_parser_impl::
+printOptionNoValue(const Option &O, size_t GlobalWidth) const {
+ printOptionName(O, GlobalWidth);
+ outs() << "= *cannot print option value*\n";
+}
//===----------------------------------------------------------------------===//
-// --help and --help-hidden option implementation
+// -help and -help-hidden option implementation
//
+static int OptNameCompare(const void *LHS, const void *RHS) {
+ typedef std::pair<const char *, Option*> pair_ty;
+
+ return strcmp(((const pair_ty*)LHS)->first, ((const pair_ty*)RHS)->first);
+}
+
+// Copy Options into a vector so we can sort them as we like.
+static void
+sortOpts(StringMap<Option*> &OptMap,
+ SmallVectorImpl< std::pair<const char *, Option*> > &Opts,
+ bool ShowHidden) {
+ SmallPtrSet<Option*, 128> OptionSet; // Duplicate option detection.
+
+ for (StringMap<Option*>::iterator I = OptMap.begin(), E = OptMap.end();
+ I != E; ++I) {
+ // Ignore really-hidden options.
+ if (I->second->getOptionHiddenFlag() == ReallyHidden)
+ continue;
+
+ // Unless showhidden is set, ignore hidden flags.
+ if (I->second->getOptionHiddenFlag() == Hidden && !ShowHidden)
+ continue;
+
+ // If we've already seen this option, don't add it to the list again.
+ if (!OptionSet.insert(I->second))
+ continue;
+
+ Opts.push_back(std::pair<const char *, Option*>(I->getKey().data(),
+ I->second));
+ }
+
+ // Sort the options list alphabetically.
+ qsort(Opts.data(), Opts.size(), sizeof(Opts[0]), OptNameCompare);
+}
+
namespace {
class HelpPrinter {
- size_t MaxArgLen;
- const Option *EmptyArg;
+protected:
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;
+ typedef SmallVector<std::pair<const char *, Option*>,128> StrOptionPairVector;
+ // Print the options. Opts is assumed to be alphabetically sorted.
+ virtual void printOptions(StrOptionPairVector &Opts, size_t MaxArgLen) {
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ Opts[i].second->printOptionInfo(MaxArgLen);
}
public:
- explicit HelpPrinter(bool showHidden) : ShowHidden(showHidden) {
- EmptyArg = 0;
- }
+ explicit HelpPrinter(bool showHidden) : ShowHidden(showHidden) {}
+ virtual ~HelpPrinter() {}
+ // Invoke the printer.
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;
+ SmallVector<Option*, 4> PositionalOpts;
+ SmallVector<Option*, 4> SinkOpts;
+ StringMap<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
- }
+ StrOptionPairVector Opts;
+ sortOpts(OptMap, Opts, ShowHidden);
if (ProgramOverview)
- cout << "OVERVIEW: " << ProgramOverview << "\n";
+ outs() << "OVERVIEW: " << ProgramOverview << "\n";
- cout << "USAGE: " << ProgramName << " [options]";
+ outs() << "USAGE: " << ProgramName << " [options]";
// Print out the positional options.
Option *CAOpt = 0; // The cl::ConsumeAfter option, if it exists...
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;
+ outs() << " --" << PositionalOpts[i]->ArgStr;
+ outs() << " " << PositionalOpts[i]->HelpStr;
}
// Print the consume after option info if it exists...
- if (CAOpt) cout << " " << CAOpt->HelpStr;
+ if (CAOpt) outs() << " " << CAOpt->HelpStr;
- cout << "\n\n";
+ outs() << "\n\n";
// Compute the maximum argument length...
- MaxArgLen = 0;
+ size_t 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);
+ outs() << "OPTIONS:\n";
+ printOptions(Opts, 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;
+ E = MoreHelp->end();
+ I != E; ++I)
+ outs() << *I;
MoreHelp->clear();
// Halt the program since help information was printed
exit(1);
}
};
+
+class CategorizedHelpPrinter : public HelpPrinter {
+public:
+ explicit CategorizedHelpPrinter(bool showHidden) : HelpPrinter(showHidden) {}
+
+ // Helper function for printOptions().
+ // It shall return true if A's name should be lexographically
+ // ordered before B's name. It returns false otherwise.
+ static bool OptionCategoryCompare(OptionCategory *A, OptionCategory *B) {
+ int Length = strcmp(A->getName(), B->getName());
+ assert(Length != 0 && "Duplicate option categories");
+ return Length < 0;
+ }
+
+ // Make sure we inherit our base class's operator=()
+ using HelpPrinter::operator= ;
+
+protected:
+ virtual void printOptions(StrOptionPairVector &Opts, size_t MaxArgLen) {
+ std::vector<OptionCategory *> SortedCategories;
+ std::map<OptionCategory *, std::vector<Option *> > CategorizedOptions;
+
+ // Collect registered option categories into vector in preperation for
+ // sorting.
+ for (OptionCatSet::const_iterator I = RegisteredOptionCategories->begin(),
+ E = RegisteredOptionCategories->end();
+ I != E; ++I)
+ SortedCategories.push_back(*I);
+
+ // Sort the different option categories alphabetically.
+ assert(SortedCategories.size() > 0 && "No option categories registered!");
+ std::sort(SortedCategories.begin(), SortedCategories.end(),
+ OptionCategoryCompare);
+
+ // Create map to empty vectors.
+ for (std::vector<OptionCategory *>::const_iterator
+ I = SortedCategories.begin(),
+ E = SortedCategories.end();
+ I != E; ++I)
+ CategorizedOptions[*I] = std::vector<Option *>();
+
+ // Walk through pre-sorted options and assign into categories.
+ // Because the options are already alphabetically sorted the
+ // options within categories will also be alphabetically sorted.
+ for (size_t I = 0, E = Opts.size(); I != E; ++I) {
+ Option *Opt = Opts[I].second;
+ assert(CategorizedOptions.count(Opt->Category) > 0 &&
+ "Option has an unregistered category");
+ CategorizedOptions[Opt->Category].push_back(Opt);
+ }
+
+ // Now do printing.
+ for (std::vector<OptionCategory *>::const_iterator
+ Category = SortedCategories.begin(),
+ E = SortedCategories.end();
+ Category != E; ++Category) {
+ // Hide empty categories for -help, but show for -help-hidden.
+ bool IsEmptyCategory = CategorizedOptions[*Category].size() == 0;
+ if (!ShowHidden && IsEmptyCategory)
+ continue;
+
+ // Print category information.
+ outs() << "\n";
+ outs() << (*Category)->getName() << ":\n";
+
+ // Check if description is set.
+ if ((*Category)->getDescription() != 0)
+ outs() << (*Category)->getDescription() << "\n\n";
+ else
+ outs() << "\n";
+
+ // When using -help-hidden explicitly state if the category has no
+ // options associated with it.
+ if (IsEmptyCategory) {
+ outs() << " This option category has no options.\n";
+ continue;
+ }
+ // Loop over the options in the category and print.
+ for (std::vector<Option *>::const_iterator
+ Opt = CategorizedOptions[*Category].begin(),
+ E = CategorizedOptions[*Category].end();
+ Opt != E; ++Opt)
+ (*Opt)->printOptionInfo(MaxArgLen);
+ }
+ }
+};
+
+// This wraps the Uncategorizing and Categorizing printers and decides
+// at run time which should be invoked.
+class HelpPrinterWrapper {
+private:
+ HelpPrinter &UncategorizedPrinter;
+ CategorizedHelpPrinter &CategorizedPrinter;
+
+public:
+ explicit HelpPrinterWrapper(HelpPrinter &UncategorizedPrinter,
+ CategorizedHelpPrinter &CategorizedPrinter) :
+ UncategorizedPrinter(UncategorizedPrinter),
+ CategorizedPrinter(CategorizedPrinter) { }
+
+ // Invoke the printer.
+ void operator=(bool Value);
+};
+
} // 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);
+// Declare the four HelpPrinter instances that are used to print out help, or
+// help-hidden as an uncategorized list or in categories.
+static HelpPrinter UncategorizedNormalPrinter(false);
+static HelpPrinter UncategorizedHiddenPrinter(true);
+static CategorizedHelpPrinter CategorizedNormalPrinter(false);
+static CategorizedHelpPrinter CategorizedHiddenPrinter(true);
+
+
+// Declare HelpPrinter wrappers that will decide whether or not to invoke
+// a categorizing help printer
+static HelpPrinterWrapper WrappedNormalPrinter(UncategorizedNormalPrinter,
+ CategorizedNormalPrinter);
+static HelpPrinterWrapper WrappedHiddenPrinter(UncategorizedHiddenPrinter,
+ CategorizedHiddenPrinter);
+// Define uncategorized help printers.
+// -help-list is hidden by default because if Option categories are being used
+// then -help behaves the same as -help-list.
static cl::opt<HelpPrinter, true, parser<bool> >
-HOp("help", cl::desc("Display available options (--help-hidden for more)"),
- cl::location(NormalPrinter), cl::ValueDisallowed);
+HLOp("help-list",
+ cl::desc("Display list of available options (-help-list-hidden for more)"),
+ cl::location(UncategorizedNormalPrinter), cl::Hidden, cl::ValueDisallowed);
static cl::opt<HelpPrinter, true, parser<bool> >
+HLHOp("help-list-hidden",
+ cl::desc("Display list of all available options"),
+ cl::location(UncategorizedHiddenPrinter), cl::Hidden, cl::ValueDisallowed);
+
+// Define uncategorized/categorized help printers. These printers change their
+// behaviour at runtime depending on whether one or more Option categories have
+// been declared.
+static cl::opt<HelpPrinterWrapper, true, parser<bool> >
+HOp("help", cl::desc("Display available options (-help-hidden for more)"),
+ cl::location(WrappedNormalPrinter), cl::ValueDisallowed);
+
+static cl::opt<HelpPrinterWrapper, true, parser<bool> >
HHOp("help-hidden", cl::desc("Display all available options"),
- cl::location(HiddenPrinter), cl::Hidden, cl::ValueDisallowed);
+ cl::location(WrappedHiddenPrinter), cl::Hidden, cl::ValueDisallowed);
+
+
+
+static cl::opt<bool>
+PrintOptions("print-options",
+ cl::desc("Print non-default options after command line parsing"),
+ cl::Hidden, cl::init(false));
+
+static cl::opt<bool>
+PrintAllOptions("print-all-options",
+ cl::desc("Print all option values after command line parsing"),
+ cl::Hidden, cl::init(false));
+
+void HelpPrinterWrapper::operator=(bool Value) {
+ if (Value == false)
+ return;
+
+ // Decide which printer to invoke. If more than one option category is
+ // registered then it is useful to show the categorized help instead of
+ // uncategorized help.
+ if (RegisteredOptionCategories->size() > 1) {
+ // unhide -help-list option so user can have uncategorized output if they
+ // want it.
+ HLOp.setHiddenFlag(NotHidden);
+
+ CategorizedPrinter = true; // Invoke categorized printer
+ }
+ else
+ UncategorizedPrinter = true; // Invoke uncategorized printer
+}
+
+// Print the value of each option.
+void cl::PrintOptionValues() {
+ if (!PrintOptions && !PrintAllOptions) return;
+
+ // Get all the options.
+ SmallVector<Option*, 4> PositionalOpts;
+ SmallVector<Option*, 4> SinkOpts;
+ StringMap<Option*> OptMap;
+ GetOptionInfo(PositionalOpts, SinkOpts, OptMap);
+
+ SmallVector<std::pair<const char *, Option*>, 128> Opts;
+ sortOpts(OptMap, Opts, /*ShowHidden*/true);
+
+ // Compute the maximum argument length...
+ size_t MaxArgLen = 0;
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ MaxArgLen = std::max(MaxArgLen, Opts[i].second->getOptionWidth());
+
+ for (size_t i = 0, e = Opts.size(); i != e; ++i)
+ Opts[i].second->printOptionValue(MaxArgLen, PrintAllOptions);
+}
static void (*OverrideVersionPrinter)() = 0;
+static std::vector<void (*)()>* ExtraVersionPrinters = 0;
+
namespace {
class VersionPrinter {
public:
void print() {
- cout << "Low Level Virtual Machine (http://llvm.org/):\n";
- cout << " " << PACKAGE_NAME << " version " << PACKAGE_VERSION;
+ raw_ostream &OS = outs();
+ OS << "LLVM (http://llvm.org/):\n"
+ << " " << PACKAGE_NAME << " version " << PACKAGE_VERSION;
#ifdef LLVM_VERSION_INFO
- cout << LLVM_VERSION_INFO;
+ OS << LLVM_VERSION_INFO;
#endif
- cout << "\n ";
+ OS << "\n ";
#ifndef __OPTIMIZE__
- cout << "DEBUG build";
+ OS << "DEBUG build";
#else
- cout << "Optimized build";
+ OS << "Optimized build";
#endif
#ifndef NDEBUG
- cout << " with assertions";
+ OS << " with assertions";
#endif
- cout << ".\n";
- cout << " Built " << __DATE__ << "(" << __TIME__ << ").\n";
+ std::string CPU = sys::getHostCPUName();
+ if (CPU == "generic") CPU = "(unknown)";
+ OS << ".\n"
+#if (ENABLE_TIMESTAMPS == 1)
+ << " Built " << __DATE__ << " (" << __TIME__ << ").\n"
+#endif
+ << " Default target: " << sys::getDefaultTargetTriple() << '\n'
+ << " Host CPU: " << CPU << '\n';
}
void operator=(bool OptionWasSpecified) {
- if (OptionWasSpecified) {
- if (OverrideVersionPrinter == 0) {
- print();
- exit(1);
- } else {
- (*OverrideVersionPrinter)();
- exit(1);
- }
+ if (!OptionWasSpecified) return;
+
+ if (OverrideVersionPrinter != 0) {
+ (*OverrideVersionPrinter)();
+ exit(1);
}
+ print();
+
+ // Iterate over any registered extra printers and call them to add further
+ // information.
+ if (ExtraVersionPrinters != 0) {
+ outs() << '\n';
+ for (std::vector<void (*)()>::iterator I = ExtraVersionPrinters->begin(),
+ E = ExtraVersionPrinters->end();
+ I != E; ++I)
+ (*I)();
+ }
+
+ exit(1);
}
};
} // End anonymous namespace
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;
+void cl::PrintHelpMessage(bool Hidden, bool Categorized) {
+ // This looks weird, but it actually prints the help message. The Printers are
+ // types of 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 -help or -help-hidden was given or
+ // not. Since we're circumventing that we have to make it look like -help or
+ // -help-hidden were given, so we assign true.
+
+ if (!Hidden && !Categorized)
+ UncategorizedNormalPrinter = true;
+ else if (!Hidden && Categorized)
+ CategorizedNormalPrinter = true;
+ else if (Hidden && !Categorized)
+ UncategorizedHiddenPrinter = true;
+ else
+ CategorizedHiddenPrinter = true;
}
/// Utility function for printing version number.
void cl::SetVersionPrinter(void (*func)()) {
OverrideVersionPrinter = func;
}
+
+void cl::AddExtraVersionPrinter(void (*func)()) {
+ if (ExtraVersionPrinters == 0)
+ ExtraVersionPrinters = new std::vector<void (*)()>;
+
+ ExtraVersionPrinters->push_back(func);
+}
+
+void cl::getRegisteredOptions(StringMap<Option*> &Map)
+{
+ // Get all the options.
+ SmallVector<Option*, 4> PositionalOpts; //NOT USED
+ SmallVector<Option*, 4> SinkOpts; //NOT USED
+ assert(Map.size() == 0 && "StringMap must be empty");
+ GetOptionInfo(PositionalOpts, SinkOpts, Map);
+ return;
+}