HelpVisitor.h

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// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
 
/******************************************************************************
 *
 *  file:  HelpVisitor.h
 *
 *  Copyright (c) 2003, Michael E. Smoot .
 *  All rights reserved.
 *
 *  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_HELP_VISITOR_H
#define TCLAP_HELP_VISITOR_H
 
#include <tclap/CmdLineInterface.h>
#include <tclap/CmdLineOutput.h>
#include <tclap/Visitor.h>
 
namespace TCLAP {
 
class HelpVisitor : public Visitor {
private:
    HelpVisitor(const HelpVisitor &rhs);
    HelpVisitor &operator=(const HelpVisitor &rhs);
 
protected:
    CmdLineInterface *_cmd;
 
    CmdLineOutput **_out;
 
public:
    HelpVisitor(CmdLineInterface *cmd, CmdLineOutput **out)
        : Visitor(), _cmd(cmd), _out(out) {}
 
    void visit() {
        (*_out)->usage(*_cmd);
        throw ExitException(0);
    }
};
}  // namespace TCLAP
 
#endif  // TCLAP_HELP_VISITOR_H