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Diffstat (limited to 'tclap-1.2.1/include/tclap/MultiArg.h')
| -rw-r--r-- | tclap-1.2.1/include/tclap/MultiArg.h | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/tclap-1.2.1/include/tclap/MultiArg.h b/tclap-1.2.1/include/tclap/MultiArg.h new file mode 100644 index 0000000..34bb2d7 --- /dev/null +++ b/tclap-1.2.1/include/tclap/MultiArg.h @@ -0,0 +1,433 @@ +/****************************************************************************** + * + * file: MultiArg.h + * + * Copyright (c) 2003, Michael E. Smoot . + * Copyright (c) 2004, Michael E. Smoot, Daniel Aarno. + * All rights reverved. + * + * See the file COPYING in the top directory of this distribution for + * more information. + * + * THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + *****************************************************************************/ + + +#ifndef TCLAP_MULTIPLE_ARGUMENT_H +#define TCLAP_MULTIPLE_ARGUMENT_H + +#include <string> +#include <vector> + +#include <tclap/Arg.h> +#include <tclap/Constraint.h> + +namespace TCLAP { +/** + * An argument that allows multiple values of type T to be specified. Very + * similar to a ValueArg, except a vector of values will be returned + * instead of just one. + */ +template<class T> +class MultiArg : public Arg +{ +public: + typedef std::vector<T> container_type; + typedef typename container_type::iterator iterator; + typedef typename container_type::const_iterator const_iterator; + +protected: + + /** + * The list of values parsed from the CmdLine. + */ + std::vector<T> _values; + + /** + * The description of type T to be used in the usage. + */ + std::string _typeDesc; + + /** + * A list of constraint on this Arg. + */ + Constraint<T>* _constraint; + + /** + * Extracts the value from the string. + * Attempts to parse string as type T, if this fails an exception + * is thrown. + * \param val - The string to be read. + */ + void _extractValue( const std::string& val ); + + /** + * Used by XorHandler to decide whether to keep parsing for this arg. + */ + bool _allowMore; + +public: + + /** + * Constructor. + * \param flag - The one character flag that identifies this + * argument on the command line. + * \param name - A one word name for the argument. Can be + * used as a long flag on the command line. + * \param desc - A description of what the argument is for or + * does. + * \param req - Whether the argument is required on the command + * line. + * \param typeDesc - A short, human readable description of the + * type that this object expects. This is used in the generation + * of the USAGE statement. The goal is to be helpful to the end user + * of the program. + * \param v - An optional visitor. You probably should not + * use this unless you have a very good reason. + */ + MultiArg( const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + const std::string& typeDesc, + Visitor* v = NULL); + + /** + * Constructor. + * \param flag - The one character flag that identifies this + * argument on the command line. + * \param name - A one word name for the argument. Can be + * used as a long flag on the command line. + * \param desc - A description of what the argument is for or + * does. + * \param req - Whether the argument is required on the command + * line. + * \param typeDesc - A short, human readable description of the + * type that this object expects. This is used in the generation + * of the USAGE statement. The goal is to be helpful to the end user + * of the program. + * \param parser - A CmdLine parser object to add this Arg to + * \param v - An optional visitor. You probably should not + * use this unless you have a very good reason. + */ + MultiArg( const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + const std::string& typeDesc, + CmdLineInterface& parser, + Visitor* v = NULL ); + + /** + * Constructor. + * \param flag - The one character flag that identifies this + * argument on the command line. + * \param name - A one word name for the argument. Can be + * used as a long flag on the command line. + * \param desc - A description of what the argument is for or + * does. + * \param req - Whether the argument is required on the command + * line. + * \param constraint - A pointer to a Constraint object used + * to constrain this Arg. + * \param v - An optional visitor. You probably should not + * use this unless you have a very good reason. + */ + MultiArg( const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + Constraint<T>* constraint, + Visitor* v = NULL ); + + /** + * Constructor. + * \param flag - The one character flag that identifies this + * argument on the command line. + * \param name - A one word name for the argument. Can be + * used as a long flag on the command line. + * \param desc - A description of what the argument is for or + * does. + * \param req - Whether the argument is required on the command + * line. + * \param constraint - A pointer to a Constraint object used + * to constrain this Arg. + * \param parser - A CmdLine parser object to add this Arg to + * \param v - An optional visitor. You probably should not + * use this unless you have a very good reason. + */ + MultiArg( const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + Constraint<T>* constraint, + CmdLineInterface& parser, + Visitor* v = NULL ); + + /** + * Handles the processing of the argument. + * This re-implements the Arg version of this method to set the + * _value of the argument appropriately. It knows the difference + * between labeled and unlabeled. + * \param i - Pointer the the current argument in the list. + * \param args - Mutable list of strings. Passed from main(). + */ + virtual bool processArg(int* i, std::vector<std::string>& args); + + /** + * Returns a vector of type T containing the values parsed from + * the command line. + */ + const std::vector<T>& getValue(); + + /** + * Returns an iterator over the values parsed from the command + * line. + */ + const_iterator begin() const { return _values.begin(); } + + /** + * Returns the end of the values parsed from the command + * line. + */ + const_iterator end() const { return _values.end(); } + + /** + * Returns the a short id string. Used in the usage. + * \param val - value to be used. + */ + virtual std::string shortID(const std::string& val="val") const; + + /** + * Returns the a long id string. Used in the usage. + * \param val - value to be used. + */ + virtual std::string longID(const std::string& val="val") const; + + /** + * Once we've matched the first value, then the arg is no longer + * required. + */ + virtual bool isRequired() const; + + virtual bool allowMore(); + + virtual void reset(); + +private: + /** + * Prevent accidental copying + */ + MultiArg<T>(const MultiArg<T>& rhs); + MultiArg<T>& operator=(const MultiArg<T>& rhs); + +}; + +template<class T> +MultiArg<T>::MultiArg(const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + const std::string& typeDesc, + Visitor* v) : + Arg( flag, name, desc, req, true, v ), + _values(std::vector<T>()), + _typeDesc( typeDesc ), + _constraint( NULL ), + _allowMore(false) +{ + _acceptsMultipleValues = true; +} + +template<class T> +MultiArg<T>::MultiArg(const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + const std::string& typeDesc, + CmdLineInterface& parser, + Visitor* v) +: Arg( flag, name, desc, req, true, v ), + _values(std::vector<T>()), + _typeDesc( typeDesc ), + _constraint( NULL ), + _allowMore(false) +{ + parser.add( this ); + _acceptsMultipleValues = true; +} + +/** + * + */ +template<class T> +MultiArg<T>::MultiArg(const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + Constraint<T>* constraint, + Visitor* v) +: Arg( flag, name, desc, req, true, v ), + _values(std::vector<T>()), + _typeDesc( constraint->shortID() ), + _constraint( constraint ), + _allowMore(false) +{ + _acceptsMultipleValues = true; +} + +template<class T> +MultiArg<T>::MultiArg(const std::string& flag, + const std::string& name, + const std::string& desc, + bool req, + Constraint<T>* constraint, + CmdLineInterface& parser, + Visitor* v) +: Arg( flag, name, desc, req, true, v ), + _values(std::vector<T>()), + _typeDesc( constraint->shortID() ), + _constraint( constraint ), + _allowMore(false) +{ + parser.add( this ); + _acceptsMultipleValues = true; +} + +template<class T> +const std::vector<T>& MultiArg<T>::getValue() { return _values; } + +template<class T> +bool MultiArg<T>::processArg(int *i, std::vector<std::string>& args) +{ + if ( _ignoreable && Arg::ignoreRest() ) + return false; + + if ( _hasBlanks( args[*i] ) ) + return false; + + std::string flag = args[*i]; + std::string value = ""; + + trimFlag( flag, value ); + + if ( argMatches( flag ) ) + { + if ( Arg::delimiter() != ' ' && value == "" ) + throw( ArgParseException( + "Couldn't find delimiter for this argument!", + toString() ) ); + + // always take the first one, regardless of start string + if ( value == "" ) + { + (*i)++; + if ( static_cast<unsigned int>(*i) < args.size() ) + _extractValue( args[*i] ); + else + throw( ArgParseException("Missing a value for this argument!", + toString() ) ); + } + else + _extractValue( value ); + + /* + // continuing taking the args until we hit one with a start string + while ( (unsigned int)(*i)+1 < args.size() && + args[(*i)+1].find_first_of( Arg::flagStartString() ) != 0 && + args[(*i)+1].find_first_of( Arg::nameStartString() ) != 0 ) + _extractValue( args[++(*i)] ); + */ + + _alreadySet = true; + _checkWithVisitor(); + + return true; + } + else + return false; +} + +/** + * + */ +template<class T> +std::string MultiArg<T>::shortID(const std::string& val) const +{ + static_cast<void>(val); // Ignore input, don't warn + return Arg::shortID(_typeDesc) + " ... "; +} + +/** + * + */ +template<class T> +std::string MultiArg<T>::longID(const std::string& val) const +{ + static_cast<void>(val); // Ignore input, don't warn + return Arg::longID(_typeDesc) + " (accepted multiple times)"; +} + +/** + * Once we've matched the first value, then the arg is no longer + * required. + */ +template<class T> +bool MultiArg<T>::isRequired() const +{ + if ( _required ) + { + if ( _values.size() > 1 ) + return false; + else + return true; + } + else + return false; + +} + +template<class T> +void MultiArg<T>::_extractValue( const std::string& val ) +{ + try { + T tmp; + ExtractValue(tmp, val, typename ArgTraits<T>::ValueCategory()); + _values.push_back(tmp); + } catch( ArgParseException &e) { + throw ArgParseException(e.error(), toString()); + } + + if ( _constraint != NULL ) + if ( ! _constraint->check( _values.back() ) ) + throw( CmdLineParseException( "Value '" + val + + "' does not meet constraint: " + + _constraint->description(), + toString() ) ); +} + +template<class T> +bool MultiArg<T>::allowMore() +{ + bool am = _allowMore; + _allowMore = true; + return am; +} + +template<class T> +void MultiArg<T>::reset() +{ + Arg::reset(); + _values.clear(); +} + +} // namespace TCLAP + +#endif |