341 lines
11 KiB
C
341 lines
11 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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* Copyright (c) 2004, Michael E. Smoot, Daniel Aarno.
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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 TCLAP_UNLABELED_VALUE_ARGUMENT_H
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#define TCLAP_UNLABELED_VALUE_ARGUMENT_H
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#include <string>
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#include <vector>
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#include <tclap/ValueArg.h>
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#include <tclap/OptionalUnlabeledTracker.h>
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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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// If compiler has two stage name lookup (as gcc >= 3.4 does)
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// this is requried to prevent undef. symbols
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using ValueArg<T>::_ignoreable;
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using ValueArg<T>::_hasBlanks;
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using ValueArg<T>::_extractValue;
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using ValueArg<T>::_typeDesc;
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using ValueArg<T>::_name;
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using ValueArg<T>::_description;
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using ValueArg<T>::_alreadySet;
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using ValueArg<T>::toString;
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public:
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/**
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* UnlabeledValueArg constructor.
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* \param name - A one word name for the argument. Note that this is used for
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* identification, not as a long flag.
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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 req - Whether the argument is required on the command
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* line.
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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 std::string& name,
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const std::string& desc,
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bool req,
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T value,
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const std::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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* \param name - A one word name for the argument. Note that this is used for
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* identification, not as a long flag.
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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 req - Whether the argument is required on the command
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* line.
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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 parser - A CmdLine parser object to add this Arg to
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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 std::string& name,
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const std::string& desc,
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bool req,
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T value,
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const std::string& typeDesc,
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CmdLineInterface& parser,
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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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* \param name - A one word name for the argument. Note that this is used for
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* identification, not as a long flag.
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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 req - Whether the argument is required on the command
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* line.
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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 constraint - A pointer to a Constraint object used
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* to constrain this 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 std::string& name,
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const std::string& desc,
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bool req,
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T value,
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Constraint<T>* constraint,
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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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* \param name - A one word name for the argument. Note that this is used for
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* identification, not as a long flag.
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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 req - Whether the argument is required on the command
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* line.
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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 constraint - A pointer to a Constraint object used
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* to constrain this Arg.
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* \param parser - A CmdLine parser object to add this Arg to
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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 std::string& name,
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const std::string& desc,
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bool req,
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T value,
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Constraint<T>* constraint,
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CmdLineInterface& parser,
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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, std::vector<std::string>& args);
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/**
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* Overrides shortID for specific behavior.
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*/
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virtual std::string shortID(const std::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 std::string longID(const std::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( std::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 std::string& name,
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const std::string& desc,
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bool req,
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T val,
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const std::string& typeDesc,
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bool ignoreable,
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Visitor* v)
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: ValueArg<T>("", name, desc, req, val, typeDesc, v)
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{
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_ignoreable = ignoreable;
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OptionalUnlabeledTracker::check(req, toString());
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}
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template<class T>
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UnlabeledValueArg<T>::UnlabeledValueArg(const std::string& name,
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const std::string& desc,
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bool req,
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T val,
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const std::string& typeDesc,
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CmdLineInterface& parser,
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bool ignoreable,
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Visitor* v)
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: ValueArg<T>("", name, desc, req, val, typeDesc, v)
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{
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_ignoreable = ignoreable;
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OptionalUnlabeledTracker::check(req, toString());
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parser.add( this );
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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 std::string& name,
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const std::string& desc,
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bool req,
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T val,
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Constraint<T>* constraint,
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bool ignoreable,
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Visitor* v)
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: ValueArg<T>("", name, desc, req, val, constraint, v)
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{
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_ignoreable = ignoreable;
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OptionalUnlabeledTracker::check(req, toString());
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}
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template<class T>
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UnlabeledValueArg<T>::UnlabeledValueArg(const std::string& name,
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const std::string& desc,
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bool req,
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T val,
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Constraint<T>* constraint,
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CmdLineInterface& parser,
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bool ignoreable,
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Visitor* v)
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: ValueArg<T>("", name, desc, req, val, constraint, v)
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{
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_ignoreable = ignoreable;
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OptionalUnlabeledTracker::check(req, toString());
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parser.add( this );
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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, std::vector<std::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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std::string UnlabeledValueArg<T>::shortID(const std::string& val) const
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{
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static_cast<void>(val); // Ignore input, don't warn
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return std::string("<") + _typeDesc + ">";
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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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std::string UnlabeledValueArg<T>::longID(const std::string& val) const
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{
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static_cast<void>(val); // Ignore input, don't warn
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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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return std::string("<") + _typeDesc + ">";
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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( std::list<Arg*>& argList ) const
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{
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argList.push_back( const_cast<Arg*>(static_cast<const Arg* const>(this)) );
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}
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}
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#endif
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