634 lines
14 KiB
C
634 lines
14 KiB
C
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// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
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/******************************************************************************
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*
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* file: CmdLine.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_CMDLINE_H
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#define TCLAP_CMDLINE_H
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#include <tclap/SwitchArg.h>
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#include <tclap/MultiSwitchArg.h>
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#include <tclap/UnlabeledValueArg.h>
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#include <tclap/UnlabeledMultiArg.h>
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#include <tclap/XorHandler.h>
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#include <tclap/HelpVisitor.h>
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#include <tclap/VersionVisitor.h>
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#include <tclap/IgnoreRestVisitor.h>
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#include <tclap/CmdLineOutput.h>
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#include <tclap/StdOutput.h>
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#include <tclap/Constraint.h>
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#include <tclap/ValuesConstraint.h>
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#include <string>
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#include <vector>
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#include <list>
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#include <iostream>
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#include <iomanip>
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#include <algorithm>
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#include <stdlib.h> // Needed for exit(), which isn't defined in some envs.
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namespace TCLAP {
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template<typename T> void DelPtr(T ptr)
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{
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delete ptr;
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}
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template<typename C> void ClearContainer(C &c)
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{
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typedef typename C::value_type value_type;
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std::for_each(c.begin(), c.end(), DelPtr<value_type>);
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c.clear();
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}
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/**
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* The base class that manages the command line definition and passes
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* along the parsing to the appropriate Arg classes.
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*/
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class CmdLine : public CmdLineInterface
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{
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protected:
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/**
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* The list of arguments that will be tested against the
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* command line.
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*/
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std::list<Arg*> _argList;
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/**
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* The name of the program. Set to argv[0].
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*/
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std::string _progName;
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/**
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* A message used to describe the program. Used in the usage output.
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*/
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std::string _message;
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/**
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* The version to be displayed with the --version switch.
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*/
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std::string _version;
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/**
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* The number of arguments that are required to be present on
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* the command line. This is set dynamically, based on the
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* Args added to the CmdLine object.
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*/
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int _numRequired;
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/**
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* The character that is used to separate the argument flag/name
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* from the value. Defaults to ' ' (space).
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*/
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char _delimiter;
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/**
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* The handler that manages xoring lists of args.
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*/
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XorHandler _xorHandler;
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/**
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* A list of Args to be explicitly deleted when the destructor
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* is called. At the moment, this only includes the three default
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* Args.
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*/
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std::list<Arg*> _argDeleteOnExitList;
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/**
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* A list of Visitors to be explicitly deleted when the destructor
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* is called. At the moment, these are the Vistors created for the
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* default Args.
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*/
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std::list<Visitor*> _visitorDeleteOnExitList;
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/**
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* Object that handles all output for the CmdLine.
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*/
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CmdLineOutput* _output;
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/**
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* Should CmdLine handle parsing exceptions internally?
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*/
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bool _handleExceptions;
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/**
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* Throws an exception listing the missing args.
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*/
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void missingArgsException();
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/**
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* Checks whether a name/flag string matches entirely matches
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* the Arg::blankChar. Used when multiple switches are combined
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* into a single argument.
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* \param s - The message to be used in the usage.
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*/
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bool _emptyCombined(const std::string& s);
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/**
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* Perform a delete ptr; operation on ptr when this object is deleted.
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*/
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void deleteOnExit(Arg* ptr);
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/**
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* Perform a delete ptr; operation on ptr when this object is deleted.
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*/
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void deleteOnExit(Visitor* ptr);
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private:
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/**
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* Prevent accidental copying.
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*/
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CmdLine(const CmdLine& rhs);
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CmdLine& operator=(const CmdLine& rhs);
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/**
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* Encapsulates the code common to the constructors
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* (which is all of it).
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*/
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void _constructor();
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/**
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* Is set to true when a user sets the output object. We use this so
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* that we don't delete objects that are created outside of this lib.
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*/
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bool _userSetOutput;
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/**
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* Whether or not to automatically create help and version switches.
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*/
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bool _helpAndVersion;
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public:
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/**
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* Command line constructor. Defines how the arguments will be
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* parsed.
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* \param message - The message to be used in the usage
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* output.
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* \param delimiter - The character that is used to separate
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* the argument flag/name from the value. Defaults to ' ' (space).
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* \param version - The version number to be used in the
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* --version switch.
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* \param helpAndVersion - Whether or not to create the Help and
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* Version switches. Defaults to true.
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*/
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CmdLine(const std::string& message,
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const char delimiter = ' ',
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const std::string& version = "none",
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bool helpAndVersion = true);
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/**
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* Deletes any resources allocated by a CmdLine object.
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*/
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virtual ~CmdLine();
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/**
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* Adds an argument to the list of arguments to be parsed.
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* \param a - Argument to be added.
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*/
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void add( Arg& a );
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/**
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* An alternative add. Functionally identical.
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* \param a - Argument to be added.
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*/
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void add( Arg* a );
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/**
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* Add two Args that will be xor'd. If this method is used, add does
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* not need to be called.
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* \param a - Argument to be added and xor'd.
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* \param b - Argument to be added and xor'd.
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*/
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void xorAdd( Arg& a, Arg& b );
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/**
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* Add a list of Args that will be xor'd. If this method is used,
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* add does not need to be called.
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* \param xors - List of Args to be added and xor'd.
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*/
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void xorAdd( std::vector<Arg*>& xors );
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/**
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* Parses the command line.
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* \param argc - Number of arguments.
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* \param argv - Array of arguments.
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*/
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void parse(int argc, const char * const * argv);
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/**
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* Parses the command line.
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* \param args - A vector of strings representing the args.
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* args[0] is still the program name.
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*/
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void parse(std::vector<std::string>& args);
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/**
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*
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*/
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CmdLineOutput* getOutput();
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/**
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*
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*/
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void setOutput(CmdLineOutput* co);
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/**
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*
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*/
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std::string& getVersion();
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/**
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*
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*/
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std::string& getProgramName();
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/**
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*
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*/
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std::list<Arg*>& getArgList();
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/**
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*
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*/
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XorHandler& getXorHandler();
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/**
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*
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*/
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char getDelimiter();
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/**
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*
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*/
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std::string& getMessage();
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/**
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*
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*/
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bool hasHelpAndVersion();
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/**
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* Disables or enables CmdLine's internal parsing exception handling.
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*
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* @param state Should CmdLine handle parsing exceptions internally?
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*/
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void setExceptionHandling(const bool state);
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/**
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* Returns the current state of the internal exception handling.
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*
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* @retval true Parsing exceptions are handled internally.
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* @retval false Parsing exceptions are propagated to the caller.
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*/
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bool getExceptionHandling() const;
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/**
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* Allows the CmdLine object to be reused.
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*/
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void reset();
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};
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///////////////////////////////////////////////////////////////////////////////
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//Begin CmdLine.cpp
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///////////////////////////////////////////////////////////////////////////////
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inline CmdLine::CmdLine(const std::string& m,
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char delim,
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const std::string& v,
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bool help )
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:
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_argList(std::list<Arg*>()),
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_progName("not_set_yet"),
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_message(m),
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_version(v),
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_numRequired(0),
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_delimiter(delim),
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_xorHandler(XorHandler()),
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_argDeleteOnExitList(std::list<Arg*>()),
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_visitorDeleteOnExitList(std::list<Visitor*>()),
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_output(0),
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_handleExceptions(true),
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_userSetOutput(false),
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_helpAndVersion(help)
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{
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_constructor();
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}
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inline CmdLine::~CmdLine()
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{
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ClearContainer(_argDeleteOnExitList);
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ClearContainer(_visitorDeleteOnExitList);
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if ( !_userSetOutput ) {
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delete _output;
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_output = 0;
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}
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}
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inline void CmdLine::_constructor()
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{
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_output = new StdOutput;
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Arg::setDelimiter( _delimiter );
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Visitor* v;
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if ( _helpAndVersion )
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{
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v = new HelpVisitor( this, &_output );
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SwitchArg* help = new SwitchArg("h","help",
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"Displays usage information and exits.",
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false, v);
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add( help );
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deleteOnExit(help);
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deleteOnExit(v);
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v = new VersionVisitor( this, &_output );
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SwitchArg* vers = new SwitchArg("","version",
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"Displays version information and exits.",
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false, v);
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add( vers );
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deleteOnExit(vers);
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deleteOnExit(v);
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}
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v = new IgnoreRestVisitor();
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SwitchArg* ignore = new SwitchArg(Arg::flagStartString(),
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Arg::ignoreNameString(),
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"Ignores the rest of the labeled arguments following this flag.",
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false, v);
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add( ignore );
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deleteOnExit(ignore);
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deleteOnExit(v);
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}
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inline void CmdLine::xorAdd( std::vector<Arg*>& ors )
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{
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_xorHandler.add( ors );
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for (ArgVectorIterator it = ors.begin(); it != ors.end(); it++)
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{
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(*it)->forceRequired();
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(*it)->setRequireLabel( "OR required" );
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add( *it );
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}
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}
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inline void CmdLine::xorAdd( Arg& a, Arg& b )
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{
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std::vector<Arg*> ors;
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ors.push_back( &a );
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ors.push_back( &b );
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xorAdd( ors );
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}
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inline void CmdLine::add( Arg& a )
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{
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add( &a );
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}
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inline void CmdLine::add( Arg* a )
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{
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for( ArgListIterator it = _argList.begin(); it != _argList.end(); it++ )
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if ( *a == *(*it) )
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throw( SpecificationException(
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"Argument with same flag/name already exists!",
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|
|
a->longID() ) );
|
||
|
|
|
||
|
|
a->addToList( _argList );
|
||
|
|
|
||
|
|
if ( a->isRequired() )
|
||
|
|
_numRequired++;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
inline void CmdLine::parse(int argc, const char * const * argv)
|
||
|
|
{
|
||
|
|
// this step is necessary so that we have easy access to
|
||
|
|
// mutable strings.
|
||
|
|
std::vector<std::string> args;
|
||
|
|
for (int i = 0; i < argc; i++)
|
||
|
|
args.push_back(argv[i]);
|
||
|
|
|
||
|
|
parse(args);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::parse(std::vector<std::string>& args)
|
||
|
|
{
|
||
|
|
bool shouldExit = false;
|
||
|
|
int estat = 0;
|
||
|
|
|
||
|
|
try {
|
||
|
|
_progName = args.front();
|
||
|
|
args.erase(args.begin());
|
||
|
|
|
||
|
|
int requiredCount = 0;
|
||
|
|
|
||
|
|
for (int i = 0; static_cast<unsigned int>(i) < args.size(); i++)
|
||
|
|
{
|
||
|
|
bool matched = false;
|
||
|
|
for (ArgListIterator it = _argList.begin();
|
||
|
|
it != _argList.end(); it++) {
|
||
|
|
if ( (*it)->processArg( &i, args ) )
|
||
|
|
{
|
||
|
|
requiredCount += _xorHandler.check( *it );
|
||
|
|
matched = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// checks to see if the argument is an empty combined
|
||
|
|
// switch and if so, then we've actually matched it
|
||
|
|
if ( !matched && _emptyCombined( args[i] ) )
|
||
|
|
matched = true;
|
||
|
|
|
||
|
|
if ( !matched && !Arg::ignoreRest() )
|
||
|
|
throw(CmdLineParseException("Couldn't find match "
|
||
|
|
"for argument",
|
||
|
|
args[i]));
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( requiredCount < _numRequired )
|
||
|
|
missingArgsException();
|
||
|
|
|
||
|
|
if ( requiredCount > _numRequired )
|
||
|
|
throw(CmdLineParseException("Too many arguments!"));
|
||
|
|
|
||
|
|
} catch ( ArgException& e ) {
|
||
|
|
// If we're not handling the exceptions, rethrow.
|
||
|
|
if ( !_handleExceptions) {
|
||
|
|
throw;
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
_output->failure(*this,e);
|
||
|
|
} catch ( ExitException &ee ) {
|
||
|
|
estat = ee.getExitStatus();
|
||
|
|
shouldExit = true;
|
||
|
|
}
|
||
|
|
} catch (ExitException &ee) {
|
||
|
|
// If we're not handling the exceptions, rethrow.
|
||
|
|
if ( !_handleExceptions) {
|
||
|
|
throw;
|
||
|
|
}
|
||
|
|
|
||
|
|
estat = ee.getExitStatus();
|
||
|
|
shouldExit = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (shouldExit)
|
||
|
|
exit(estat);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool CmdLine::_emptyCombined(const std::string& s)
|
||
|
|
{
|
||
|
|
if ( s.length() > 0 && s[0] != Arg::flagStartChar() )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
for ( int i = 1; static_cast<unsigned int>(i) < s.length(); i++ )
|
||
|
|
if ( s[i] != Arg::blankChar() )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::missingArgsException()
|
||
|
|
{
|
||
|
|
int count = 0;
|
||
|
|
|
||
|
|
std::string missingArgList;
|
||
|
|
for (ArgListIterator it = _argList.begin(); it != _argList.end(); it++)
|
||
|
|
{
|
||
|
|
if ( (*it)->isRequired() && !(*it)->isSet() )
|
||
|
|
{
|
||
|
|
missingArgList += (*it)->getName();
|
||
|
|
missingArgList += ", ";
|
||
|
|
count++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
missingArgList = missingArgList.substr(0,missingArgList.length()-2);
|
||
|
|
|
||
|
|
std::string msg;
|
||
|
|
if ( count > 1 )
|
||
|
|
msg = "Required arguments missing: ";
|
||
|
|
else
|
||
|
|
msg = "Required argument missing: ";
|
||
|
|
|
||
|
|
msg += missingArgList;
|
||
|
|
|
||
|
|
throw(CmdLineParseException(msg));
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::deleteOnExit(Arg* ptr)
|
||
|
|
{
|
||
|
|
_argDeleteOnExitList.push_back(ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::deleteOnExit(Visitor* ptr)
|
||
|
|
{
|
||
|
|
_visitorDeleteOnExitList.push_back(ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline CmdLineOutput* CmdLine::getOutput()
|
||
|
|
{
|
||
|
|
return _output;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::setOutput(CmdLineOutput* co)
|
||
|
|
{
|
||
|
|
if ( !_userSetOutput )
|
||
|
|
delete _output;
|
||
|
|
_userSetOutput = true;
|
||
|
|
_output = co;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline std::string& CmdLine::getVersion()
|
||
|
|
{
|
||
|
|
return _version;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline std::string& CmdLine::getProgramName()
|
||
|
|
{
|
||
|
|
return _progName;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline std::list<Arg*>& CmdLine::getArgList()
|
||
|
|
{
|
||
|
|
return _argList;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline XorHandler& CmdLine::getXorHandler()
|
||
|
|
{
|
||
|
|
return _xorHandler;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline char CmdLine::getDelimiter()
|
||
|
|
{
|
||
|
|
return _delimiter;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline std::string& CmdLine::getMessage()
|
||
|
|
{
|
||
|
|
return _message;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool CmdLine::hasHelpAndVersion()
|
||
|
|
{
|
||
|
|
return _helpAndVersion;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::setExceptionHandling(const bool state)
|
||
|
|
{
|
||
|
|
_handleExceptions = state;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool CmdLine::getExceptionHandling() const
|
||
|
|
{
|
||
|
|
return _handleExceptions;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void CmdLine::reset()
|
||
|
|
{
|
||
|
|
for( ArgListIterator it = _argList.begin(); it != _argList.end(); it++ )
|
||
|
|
(*it)->reset();
|
||
|
|
|
||
|
|
_progName.clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
//End CmdLine.cpp
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
} //namespace TCLAP
|
||
|
|
#endif
|