mirror of
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233 lines
6.8 KiB
C++
233 lines
6.8 KiB
C++
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/******************************************************************************
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*
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* file: UnlabeledValueArg.h
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*
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* Copyright (c) 2003, Michael E. Smoot .
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* All rights reverved.
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*
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* See the file COPYING in the top directory of this distribution for
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* more information.
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*
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* THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*****************************************************************************/
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#ifndef __UNLABELED_VALUE_ARGUMENT_HH__
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#define __UNLABELED_VALUE_ARGUMENT_HH__
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#include <string>
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#include <vector>
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#include <sstream>
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#include <tclap/Visitor.h>
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#include <tclap/Arg.h>
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#include <tclap/ValueArg.h>
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using namespace std;
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namespace TCLAP {
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/**
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* The basic unlabeled argument that parses a value.
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* This is a template class, which means the type T defines the type
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* that a given object will attempt to parse when an UnlabeledValueArg
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* is reached in the list of args that the CmdLine iterates over.
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*/
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template<class T>
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class UnlabeledValueArg : public ValueArg<T>
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{
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public:
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/**
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* UnlabeledValueArg constructor.
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* Note that this constructor does not have a required flag. Any
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* unlabeled argument added to the CmdLine is by default required.
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* If you want optional, unlabeled arguments then use an
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* UnlabeledMultiArg.
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* \param name - A one word name for the argument. Can be
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* used as a long flag on the command line.
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* \param desc - A description of what the argument is for or
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* does.
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* \param value - The default value assigned to this argument if it
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* is not present on the command line.
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* \param typeDesc - A short, human readable description of the
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* type that this object expects. This is used in the generation
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* of the USAGE statement. The goal is to be helpful to the end user
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* of the program.
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* \param ignoreable - Allows you to specify that this argument can be
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* ignored if the '--' flag is set. This defaults to false (cannot
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* be ignored) and should generally stay that way unless you have
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* some special need for certain arguments to be ignored.
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* \param v - Optional Vistor. You should leave this blank unless
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* you have a very good reason.
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*/
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UnlabeledValueArg(const string& name,
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const string& desc,
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T value,
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const string& typeDesc,
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bool ignoreable = false,
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Visitor* v = NULL);
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/**
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* UnlabeledValueArg constructor.
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* Note that this constructor does not have a required flag. Any
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* unlabeled argument added to the CmdLine is by default required.
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* If you want optional, unlabeled arguments then use an
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* UnlabeledMultiArg.
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* \param name - A one word name for the argument. Can be
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* used as a long flag on the command line.
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* \param desc - A description of what the argument is for or
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* does.
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* \param value - The default value assigned to this argument if it
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* is not present on the command line.
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* \param allowed - A vector of type T that where the values in the
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* vector are the only values allowed for the arg.
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* \param ignoreable - Allows you to specify that this argument can be
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* ignored if the '--' flag is set. This defaults to false (cannot
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* be ignored) and should generally stay that way unless you have
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* some special need for certain arguments to be ignored.
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* \param v - Optional Vistor. You should leave this blank unless
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* you have a very good reason.
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*/
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UnlabeledValueArg(const string& name,
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const string& desc,
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T value,
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const vector<T>& allowed,
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bool ignoreable = false,
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Visitor* v = NULL);
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/**
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* Handles the processing of the argument.
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* This re-implements the Arg version of this method to set the
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* _value of the argument appropriately. Handling specific to
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* unlabled arguments.
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* \param i - Pointer the the current argument in the list.
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* \param args - Mutable list of strings.
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*/
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virtual bool processArg(int* i, vector<string>& args);
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/**
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* Overrides shortID for specific behavior.
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*/
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virtual string shortID(const string& val="val") const;
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/**
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* Overrides longID for specific behavior.
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*/
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virtual string longID(const string& val="val") const;
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/**
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* Overrides operator== for specific behavior.
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*/
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virtual bool operator==(const Arg& a ) const;
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/**
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* Instead of pushing to the front of list, push to the back.
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* \param argList - The list to add this to.
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*/
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virtual void addToList( list<Arg*>& argList ) const;
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};
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/**
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* Constructor implemenation.
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*/
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template<class T>
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UnlabeledValueArg<T>::UnlabeledValueArg(const string& name,
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const string& desc,
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T val,
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const string& typeDesc,
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bool ignoreable,
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Visitor* v)
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: ValueArg<T>("", name, desc, true, val, typeDesc, v)
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{
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_ignoreable = ignoreable;
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};
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/**
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* Constructor implemenation.
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*/
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template<class T>
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UnlabeledValueArg<T>::UnlabeledValueArg(const string& name,
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const string& desc,
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T val,
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const vector<T>& allowed,
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bool ignoreable,
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Visitor* v)
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: ValueArg<T>("", name, desc, true, val, allowed, v)
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{
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_ignoreable = ignoreable;
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};
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/**
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* Implementation of processArg().
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*/
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template<class T>
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bool UnlabeledValueArg<T>::processArg(int *i, vector<string>& args)
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{
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if ( _alreadySet )
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return false;
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if ( _hasBlanks( args[*i] ) )
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return false;
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// never ignore an unlabeled arg
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_extractValue( args[*i] );
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_alreadySet = true;
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return true;
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}
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/**
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* Overriding shortID for specific output.
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*/
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template<class T>
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string UnlabeledValueArg<T>::shortID(const string& val) const
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{
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string id = "<" + _typeDesc + ">";
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return id;
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}
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/**
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* Overriding longID for specific output.
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*/
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template<class T>
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string UnlabeledValueArg<T>::longID(const string& val) const
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{
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// Ideally we would like to be able to use RTTI to return the name
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// of the type required for this argument. However, g++ at least,
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// doesn't appear to return terribly useful "names" of the types.
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string id = "<" + _typeDesc + ">";
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return id;
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}
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/**
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* Overriding operator== for specific behavior.
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*/
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template<class T>
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bool UnlabeledValueArg<T>::operator==(const Arg& a ) const
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{
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if ( _name == a.getName() || _description == a.getDescription() )
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return true;
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else
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return false;
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}
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template<class T>
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void UnlabeledValueArg<T>::addToList( list<Arg*>& argList ) const
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{
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argList.push_back( (Arg*)this );
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}
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}
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#endif
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