mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-18 03:26:10 +01:00
561 lines
23 KiB
C++
561 lines
23 KiB
C++
/*
|
|
* Created by Phil on 25/05/2013.
|
|
* Copyright 2013 Two Blue Cubes Ltd. All rights reserved.
|
|
*
|
|
* Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
#ifndef TWOBLUECUBES_CLARA_H_INCLUDED
|
|
#define TWOBLUECUBES_CLARA_H_INCLUDED
|
|
|
|
#include "catch_text.h" // This will get moved out too
|
|
|
|
namespace Clara {
|
|
namespace Detail {
|
|
template<typename T> struct RemoveConstRef{ typedef T type; };
|
|
template<typename T> struct RemoveConstRef<T&>{ typedef T type; };
|
|
template<typename T> struct RemoveConstRef<T const&>{ typedef T type; };
|
|
template<typename T> struct RemoveConstRef<T const>{ typedef T type; };
|
|
|
|
template<typename T> struct IsBool { static const bool value = false; };
|
|
template<> struct IsBool<bool> { static const bool value = true; };
|
|
|
|
template<typename T>
|
|
void convertInto( std::string const& _source, T& _dest ) {
|
|
std::stringstream ss;
|
|
ss << _source;
|
|
ss >> _dest;
|
|
if( ss.fail() )
|
|
throw std::runtime_error( "Unable to convert " + _source + " to destination type" );
|
|
}
|
|
inline void convertInto( std::string const& _source, std::string& _dest ) {
|
|
_dest = _source;
|
|
}
|
|
inline void convertInto( std::string const& _source, bool& _dest ) {
|
|
std::string sourceLC = _source;
|
|
std::transform( sourceLC.begin(), sourceLC.end(), sourceLC.begin(), ::tolower );
|
|
if( sourceLC == "y" || sourceLC == "1" || sourceLC == "true" || sourceLC == "yes" || sourceLC == "on" )
|
|
_dest = true;
|
|
else if( sourceLC == "n" || sourceLC == "0" || sourceLC == "false" || sourceLC == "no" || sourceLC == "off" )
|
|
_dest = false;
|
|
else
|
|
throw std::runtime_error( "Expected a boolean value but did not recognise:\n '" + _source + "'" );
|
|
}
|
|
inline void convertInto( bool _source, bool& _dest ) {
|
|
_dest = _source;
|
|
}
|
|
template<typename T>
|
|
inline void convertInto( bool, T& ) {
|
|
throw std::runtime_error( "Invalid conversion" );
|
|
}
|
|
|
|
template<typename ConfigT>
|
|
struct IArgFunction {
|
|
virtual ~IArgFunction() {}
|
|
virtual void set( ConfigT& config, std::string const& value ) const = 0;
|
|
virtual void setFlag( ConfigT& config ) const = 0;
|
|
virtual bool takesArg() const = 0;
|
|
virtual IArgFunction* clone() const = 0;
|
|
};
|
|
|
|
template<typename ConfigT>
|
|
class BoundArgFunction {
|
|
public:
|
|
BoundArgFunction( IArgFunction<ConfigT>* _functionObj ) : functionObj( _functionObj ) {}
|
|
BoundArgFunction( BoundArgFunction const& other ) : functionObj( other.functionObj->clone() ) {}
|
|
BoundArgFunction& operator = ( BoundArgFunction const& other ) {
|
|
IArgFunction<ConfigT>* newFunctionObj = other.functionObj->clone();
|
|
delete functionObj;
|
|
functionObj = newFunctionObj;
|
|
return *this;
|
|
}
|
|
~BoundArgFunction() { delete functionObj; }
|
|
|
|
void set( ConfigT& config, std::string const& value ) const {
|
|
functionObj->set( config, value );
|
|
}
|
|
void setFlag( ConfigT& config ) const {
|
|
functionObj->setFlag( config );
|
|
}
|
|
bool takesArg() const { return functionObj->takesArg(); }
|
|
private:
|
|
IArgFunction<ConfigT>* functionObj;
|
|
};
|
|
|
|
|
|
template<typename C>
|
|
struct NullBinder : IArgFunction<C>{
|
|
virtual void set( C&, std::string const& ) const {}
|
|
virtual void setFlag( C& ) const {}
|
|
virtual bool takesArg() const { return true; }
|
|
virtual IArgFunction<C>* clone() const { return new NullBinder( *this ); }
|
|
};
|
|
|
|
template<typename C, typename M>
|
|
struct BoundDataMember : IArgFunction<C>{
|
|
BoundDataMember( M C::* _member ) : member( _member ) {}
|
|
virtual void set( C& p, std::string const& stringValue ) const {
|
|
convertInto( stringValue, p.*member );
|
|
}
|
|
virtual void setFlag( C& p ) const {
|
|
convertInto( true, p.*member );
|
|
}
|
|
virtual bool takesArg() const { return !IsBool<M>::value; }
|
|
virtual IArgFunction<C>* clone() const { return new BoundDataMember( *this ); }
|
|
M C::* member;
|
|
};
|
|
template<typename C, typename M>
|
|
struct BoundUnaryMethod : IArgFunction<C>{
|
|
BoundUnaryMethod( void (C::*_member)( M ) ) : member( _member ) {}
|
|
virtual void set( C& p, std::string const& stringValue ) const {
|
|
typename RemoveConstRef<M>::type value;
|
|
convertInto( stringValue, value );
|
|
(p.*member)( value );
|
|
}
|
|
virtual void setFlag( C& p ) const {
|
|
typename RemoveConstRef<M>::type value;
|
|
convertInto( true, value );
|
|
(p.*member)( value );
|
|
}
|
|
virtual bool takesArg() const { return !IsBool<M>::value; }
|
|
virtual IArgFunction<C>* clone() const { return new BoundUnaryMethod( *this ); }
|
|
void (C::*member)( M );
|
|
};
|
|
template<typename C>
|
|
struct BoundNullaryMethod : IArgFunction<C>{
|
|
BoundNullaryMethod( void (C::*_member)() ) : member( _member ) {}
|
|
virtual void set( C& p, std::string const& stringValue ) const {
|
|
bool value;
|
|
convertInto( stringValue, value );
|
|
if( value )
|
|
(p.*member)();
|
|
}
|
|
virtual void setFlag( C& p ) const {
|
|
(p.*member)();
|
|
}
|
|
virtual bool takesArg() const { return false; }
|
|
virtual IArgFunction<C>* clone() const { return new BoundNullaryMethod( *this ); }
|
|
void (C::*member)();
|
|
};
|
|
|
|
template<typename C>
|
|
struct BoundUnaryFunction : IArgFunction<C>{
|
|
BoundUnaryFunction( void (*_function)( C& ) ) : function( _function ) {}
|
|
virtual void set( C& obj, std::string const& stringValue ) const {
|
|
bool value;
|
|
convertInto( stringValue, value );
|
|
if( value )
|
|
function( obj );
|
|
}
|
|
virtual void setFlag( C& p ) const {
|
|
function( p );
|
|
}
|
|
virtual bool takesArg() const { return false; }
|
|
virtual IArgFunction<C>* clone() const { return new BoundUnaryFunction( *this ); }
|
|
void (*function)( C& );
|
|
};
|
|
|
|
template<typename C, typename T>
|
|
struct BoundBinaryFunction : IArgFunction<C>{
|
|
BoundBinaryFunction( void (*_function)( C&, T ) ) : function( _function ) {}
|
|
virtual void set( C& obj, std::string const& stringValue ) const {
|
|
typename RemoveConstRef<T>::type value;
|
|
convertInto( stringValue, value );
|
|
function( obj, value );
|
|
}
|
|
virtual void setFlag( C& obj ) const {
|
|
typename RemoveConstRef<T>::type value;
|
|
convertInto( true, value );
|
|
function( obj, value );
|
|
}
|
|
virtual bool takesArg() const { return !IsBool<T>::value; }
|
|
virtual IArgFunction<C>* clone() const { return new BoundBinaryFunction( *this ); }
|
|
void (*function)( C&, T );
|
|
};
|
|
|
|
template<typename C, typename M>
|
|
BoundArgFunction<C> makeBoundField( M C::* _member ) {
|
|
return BoundArgFunction<C>( new BoundDataMember<C,M>( _member ) );
|
|
}
|
|
template<typename C, typename M>
|
|
BoundArgFunction<C> makeBoundField( void (C::*_member)( M ) ) {
|
|
return BoundArgFunction<C>( new BoundUnaryMethod<C,M>( _member ) );
|
|
}
|
|
template<typename C>
|
|
BoundArgFunction<C> makeBoundField( void (C::*_member)() ) {
|
|
return BoundArgFunction<C>( new BoundNullaryMethod<C>( _member ) );
|
|
}
|
|
template<typename C>
|
|
BoundArgFunction<C> makeBoundField( void (*_function)( C& ) ) {
|
|
return BoundArgFunction<C>( new BoundUnaryFunction<C>( _function ) );
|
|
}
|
|
template<typename C, typename T>
|
|
BoundArgFunction<C> makeBoundField( void (*_function)( C&, T ) ) {
|
|
return BoundArgFunction<C>( new BoundBinaryFunction<C, T>( _function ) );
|
|
}
|
|
} // namespace Detail
|
|
|
|
struct Parser {
|
|
Parser() : separators( " \t=:" ) {}
|
|
|
|
struct Token {
|
|
enum Type { Positional, ShortOpt, LongOpt };
|
|
Token( Type _type, std::string const& _data ) : type( _type ), data( _data ) {}
|
|
Type type;
|
|
std::string data;
|
|
};
|
|
|
|
void parseIntoTokens( int argc, char const * const * argv, std::vector<Parser::Token>& tokens ) const {
|
|
for( int i = 1; i < argc; ++i )
|
|
parseIntoTokens( argv[i] , tokens);
|
|
}
|
|
void parseIntoTokens( std::string arg, std::vector<Parser::Token>& tokens ) const {
|
|
while( !arg.empty() ) {
|
|
Parser::Token token( Parser::Token::Positional, arg );
|
|
arg = "";
|
|
if( token.data[0] == '-' ) {
|
|
if( token.data.size() > 1 && token.data[1] == '-' ) {
|
|
token = Parser::Token( Parser::Token::LongOpt, token.data.substr( 2 ) );
|
|
}
|
|
else {
|
|
token = Parser::Token( Parser::Token::ShortOpt, token.data.substr( 1 ) );
|
|
if( token.data.size() > 1 && separators.find( token.data[1] ) == std::string::npos ) {
|
|
arg = "-" + token.data.substr( 1 );
|
|
token.data = token.data.substr( 0, 1 );
|
|
}
|
|
}
|
|
}
|
|
if( token.type != Parser::Token::Positional ) {
|
|
std::size_t pos = token.data.find_first_of( separators );
|
|
if( pos != std::string::npos ) {
|
|
arg = token.data.substr( pos+1 );
|
|
token.data = token.data.substr( 0, pos );
|
|
}
|
|
}
|
|
tokens.push_back( token );
|
|
}
|
|
}
|
|
std::string separators;
|
|
};
|
|
|
|
template<typename ConfigT>
|
|
class CommandLine {
|
|
|
|
struct Arg {
|
|
Arg( Detail::BoundArgFunction<ConfigT> const& _boundField ) : boundField( _boundField ), position( -1 ) {}
|
|
|
|
bool hasShortName( std::string const& shortName ) const {
|
|
for( std::vector<std::string>::const_iterator
|
|
it = shortNames.begin(), itEnd = shortNames.end();
|
|
it != itEnd;
|
|
++it )
|
|
if( *it == shortName )
|
|
return true;
|
|
return false;
|
|
}
|
|
bool hasLongName( std::string const& _longName ) const {
|
|
return _longName == longName;
|
|
}
|
|
bool takesArg() const {
|
|
return !hint.empty();
|
|
}
|
|
bool isFixedPositional() const {
|
|
return position != -1;
|
|
}
|
|
bool isAnyPositional() const {
|
|
return position == -1 && shortNames.empty() && longName.empty();
|
|
}
|
|
std::string dbgName() const {
|
|
if( !longName.empty() )
|
|
return "--" + longName;
|
|
if( !shortNames.empty() )
|
|
return "-" + shortNames[0];
|
|
return "positional args";
|
|
}
|
|
void validate() const {
|
|
if( boundField.takesArg() && !takesArg() )
|
|
throw std::logic_error( dbgName() + " must specify an arg name" );
|
|
}
|
|
std::string commands() const {
|
|
std::ostringstream oss;
|
|
bool first = true;
|
|
std::vector<std::string>::const_iterator it = shortNames.begin(), itEnd = shortNames.end();
|
|
for(; it != itEnd; ++it ) {
|
|
if( first )
|
|
first = false;
|
|
else
|
|
oss << ", ";
|
|
oss << "-" << *it;
|
|
}
|
|
if( !longName.empty() ) {
|
|
if( !first )
|
|
oss << ", ";
|
|
oss << "--" << longName;
|
|
}
|
|
if( !hint.empty() )
|
|
oss << " <" << hint << ">";
|
|
return oss.str();
|
|
}
|
|
|
|
Detail::BoundArgFunction<ConfigT> boundField;
|
|
std::vector<std::string> shortNames;
|
|
std::string longName;
|
|
std::string description;
|
|
std::string hint;
|
|
int position;
|
|
};
|
|
|
|
// NOTE: std::auto_ptr is deprecated in c++11/c++0x
|
|
#if defined(__cplusplus) && __cplusplus > 199711L
|
|
typedef std::unique_ptr<Arg> ArgAutoPtr;
|
|
#else
|
|
typedef std::auto_ptr<Arg> ArgAutoPtr;
|
|
#endif
|
|
|
|
class ArgBinder {
|
|
public:
|
|
template<typename F>
|
|
ArgBinder( CommandLine* cl, F f )
|
|
: m_cl( cl ),
|
|
m_arg( Detail::makeBoundField( f ) )
|
|
{}
|
|
ArgBinder( ArgBinder& other )
|
|
: m_cl( other.m_cl ),
|
|
m_arg( other.m_arg )
|
|
{
|
|
other.m_cl = NULL;
|
|
}
|
|
~ArgBinder() {
|
|
if( m_cl ) {
|
|
m_arg.validate();
|
|
if( m_arg.isFixedPositional() ) {
|
|
m_cl->m_positionalArgs.insert( std::make_pair( m_arg.position, m_arg ) );
|
|
if( m_arg.position > m_cl->m_highestSpecifiedArgPosition )
|
|
m_cl->m_highestSpecifiedArgPosition = m_arg.position;
|
|
}
|
|
else if( m_arg.isAnyPositional() ) {
|
|
if( m_cl->m_arg.get() )
|
|
throw std::logic_error( "Only one unpositional argument can be added" );
|
|
m_cl->m_arg = ArgAutoPtr( new Arg( m_arg ) );
|
|
}
|
|
else
|
|
m_cl->m_options.push_back( m_arg );
|
|
}
|
|
}
|
|
ArgBinder& shortOpt( std::string const& name ) {
|
|
m_arg.shortNames.push_back( name );
|
|
return *this;
|
|
}
|
|
ArgBinder& longOpt( std::string const& name ) {
|
|
m_arg.longName = name;
|
|
return *this;
|
|
}
|
|
ArgBinder& describe( std::string const& description ) {
|
|
m_arg.description = description;
|
|
return *this;
|
|
}
|
|
ArgBinder& hint( std::string const& hint ) {
|
|
m_arg.hint = hint;
|
|
return *this;
|
|
}
|
|
ArgBinder& position( int position ) {
|
|
m_arg.position = position;
|
|
return *this;
|
|
}
|
|
private:
|
|
CommandLine* m_cl;
|
|
Arg m_arg;
|
|
};
|
|
|
|
public:
|
|
|
|
CommandLine()
|
|
: m_boundProcessName( new Detail::NullBinder<ConfigT>() ),
|
|
m_highestSpecifiedArgPosition( 0 )
|
|
{}
|
|
CommandLine( CommandLine const& other )
|
|
: m_boundProcessName( other.m_boundProcessName ),
|
|
m_options ( other.m_options ),
|
|
m_positionalArgs( other.m_positionalArgs ),
|
|
m_highestSpecifiedArgPosition( other.m_highestSpecifiedArgPosition )
|
|
{
|
|
if( other.m_arg.get() )
|
|
m_arg = ArgAutoPtr( new Arg( *other.m_arg ) );
|
|
}
|
|
|
|
template<typename F>
|
|
ArgBinder bind( F f ) {
|
|
ArgBinder binder( this, f );
|
|
return binder;
|
|
}
|
|
template<typename F>
|
|
void bindProcessName( F f ) {
|
|
m_boundProcessName = Detail::makeBoundField( f );
|
|
}
|
|
|
|
void optUsage( std::ostream& os, std::size_t indent = 0, std::size_t width = CATCH_CONFIG_CONSOLE_WIDTH ) const {
|
|
typename std::vector<Arg>::const_iterator itBegin = m_options.begin(), itEnd = m_options.end(), it;
|
|
std::size_t maxWidth = 0;
|
|
for( it = itBegin; it != itEnd; ++it )
|
|
maxWidth = (std::max)( maxWidth, it->commands().size() );
|
|
|
|
for( it = itBegin; it != itEnd; ++it ) {
|
|
Catch::Text usage( it->commands(), Catch::TextAttributes()
|
|
.setWidth( maxWidth+indent )
|
|
.setIndent( indent ) );
|
|
// !TBD handle longer usage strings
|
|
Catch::Text desc( it->description, Catch::TextAttributes()
|
|
.setWidth( width - maxWidth -3 ) );
|
|
|
|
for( std::size_t i = 0; i < (std::max)( usage.size(), desc.size() ); ++i ) {
|
|
std::string usageCol = i < usage.size() ? usage[i] : "";
|
|
os << usageCol;
|
|
|
|
if( i < desc.size() && !desc[i].empty() )
|
|
os << std::string( indent + 2 + maxWidth - usageCol.size(), ' ' )
|
|
<< desc[i];
|
|
os << "\n";
|
|
}
|
|
}
|
|
}
|
|
std::string optUsage() const {
|
|
std::ostringstream oss;
|
|
optUsage( oss );
|
|
return oss.str();
|
|
}
|
|
|
|
void argSynopsis( std::ostream& os ) const {
|
|
for( int i = 1; i <= m_highestSpecifiedArgPosition; ++i ) {
|
|
if( i > 1 )
|
|
os << " ";
|
|
typename std::map<int, Arg>::const_iterator it = m_positionalArgs.find( i );
|
|
if( it != m_positionalArgs.end() )
|
|
os << "<" << it->second.hint << ">";
|
|
else if( m_arg.get() )
|
|
os << "<" << m_arg->hint << ">";
|
|
else
|
|
throw std::logic_error( "non consecutive positional arguments with no floating args" );
|
|
}
|
|
// !TBD No indication of mandatory args
|
|
if( m_arg.get() ) {
|
|
if( m_highestSpecifiedArgPosition > 1 )
|
|
os << " ";
|
|
os << "[<" << m_arg->hint << "> ...]";
|
|
}
|
|
}
|
|
std::string argSynopsis() const {
|
|
std::ostringstream oss;
|
|
argSynopsis( oss );
|
|
return oss.str();
|
|
}
|
|
|
|
void usage( std::ostream& os, std::string const& procName ) const {
|
|
os << "usage:\n " << procName << " ";
|
|
argSynopsis( os );
|
|
if( !m_options.empty() ) {
|
|
os << " [options]\n\nwhere options are: \n";
|
|
optUsage( os, 2 );
|
|
}
|
|
os << "\n";
|
|
}
|
|
std::string usage( std::string const& procName ) const {
|
|
std::ostringstream oss;
|
|
usage( oss, procName );
|
|
return oss.str();
|
|
}
|
|
|
|
std::vector<Parser::Token> parseInto( int argc, char const * const * argv, ConfigT& config ) const {
|
|
std::string processName = argv[0];
|
|
std::size_t lastSlash = processName.find_last_of( "/\\" );
|
|
if( lastSlash != std::string::npos )
|
|
processName = processName.substr( lastSlash+1 );
|
|
m_boundProcessName.set( config, processName );
|
|
std::vector<Parser::Token> tokens;
|
|
Parser parser;
|
|
parser.parseIntoTokens( argc, argv, tokens );
|
|
return populate( tokens, config );
|
|
}
|
|
|
|
std::vector<Parser::Token> populate( std::vector<Parser::Token> const& tokens, ConfigT& config ) const {
|
|
if( m_options.empty() && m_positionalArgs.empty() )
|
|
throw std::logic_error( "No options or arguments specified" );
|
|
|
|
std::vector<Parser::Token> unusedTokens = populateOptions( tokens, config );
|
|
unusedTokens = populateFixedArgs( unusedTokens, config );
|
|
unusedTokens = populateFloatingArgs( unusedTokens, config );
|
|
return unusedTokens;
|
|
}
|
|
|
|
std::vector<Parser::Token> populateOptions( std::vector<Parser::Token> const& tokens, ConfigT& config ) const {
|
|
std::vector<Parser::Token> unusedTokens;
|
|
for( std::size_t i = 0; i < tokens.size(); ++i ) {
|
|
Parser::Token const& token = tokens[i];
|
|
typename std::vector<Arg>::const_iterator it = m_options.begin(), itEnd = m_options.end();
|
|
for(; it != itEnd; ++it ) {
|
|
Arg const& arg = *it;
|
|
|
|
try {
|
|
if( ( token.type == Parser::Token::ShortOpt && arg.hasShortName( token.data ) ) ||
|
|
( token.type == Parser::Token::LongOpt && arg.hasLongName( token.data ) ) ) {
|
|
if( arg.takesArg() ) {
|
|
if( i == tokens.size()-1 || tokens[i+1].type != Parser::Token::Positional )
|
|
throw std::domain_error( "Expected argument to option " + token.data );
|
|
arg.boundField.set( config, tokens[++i].data );
|
|
}
|
|
else {
|
|
arg.boundField.setFlag( config );
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
catch( std::exception& ex ) {
|
|
throw std::runtime_error( std::string( ex.what() ) + "\n- while parsing: (" + arg.commands() + ")" );
|
|
}
|
|
}
|
|
if( it == itEnd )
|
|
unusedTokens.push_back( token );
|
|
}
|
|
return unusedTokens;
|
|
}
|
|
std::vector<Parser::Token> populateFixedArgs( std::vector<Parser::Token> const& tokens, ConfigT& config ) const {
|
|
std::vector<Parser::Token> unusedTokens;
|
|
int position = 1;
|
|
for( std::size_t i = 0; i < tokens.size(); ++i ) {
|
|
Parser::Token const& token = tokens[i];
|
|
typename std::map<int, Arg>::const_iterator it = m_positionalArgs.find( position );
|
|
if( it != m_positionalArgs.end() )
|
|
it->second.boundField.set( config, token.data );
|
|
else
|
|
unusedTokens.push_back( token );
|
|
if( token.type == Parser::Token::Positional )
|
|
position++;
|
|
}
|
|
return unusedTokens;
|
|
}
|
|
std::vector<Parser::Token> populateFloatingArgs( std::vector<Parser::Token> const& tokens, ConfigT& config ) const {
|
|
if( !m_arg.get() )
|
|
return tokens;
|
|
std::vector<Parser::Token> unusedTokens;
|
|
for( std::size_t i = 0; i < tokens.size(); ++i ) {
|
|
Parser::Token const& token = tokens[i];
|
|
if( token.type == Parser::Token::Positional )
|
|
m_arg->boundField.set( config, token.data );
|
|
else
|
|
unusedTokens.push_back( token );
|
|
}
|
|
return unusedTokens;
|
|
}
|
|
|
|
private:
|
|
Detail::BoundArgFunction<ConfigT> m_boundProcessName;
|
|
std::vector<Arg> m_options;
|
|
std::map<int, Arg> m_positionalArgs;
|
|
ArgAutoPtr m_arg;
|
|
int m_highestSpecifiedArgPosition;
|
|
};
|
|
|
|
} // end namespace Clara
|
|
|
|
|
|
#endif // TWOBLUECUBES_CLARA_H_INCLUDED
|