view base/Exceptions.h @ 1376:d9511f9e04d7 dev/refactor-piper-related

Introduce some POD structs for describing an external server application and the desired libraries to load from it, and disambiguating between empty list request and invalid list request. This allows for overriding PiperVampPluginFactory behaviour for using a PluginScan to populate the list request.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _EXCEPTIONS_H_
#define _EXCEPTIONS_H_

#include <exception>

#include <QString>

#include "Debug.h"

class FileNotFound : virtual public std::exception
{
public:
    FileNotFound(QString file) throw();
    virtual ~FileNotFound() throw() { }
    virtual const char *what() const throw();
    
protected:
    QString m_file;
};

class FailedToOpenFile : virtual public std::exception
{
public:
    FailedToOpenFile(QString file) throw();
    virtual ~FailedToOpenFile() throw() { }
    virtual const char *what() const throw();
    
protected:
    QString m_file;
};

class DirectoryCreationFailed : virtual public std::exception
{
public:
    DirectoryCreationFailed(QString directory) throw();
    virtual ~DirectoryCreationFailed() throw() { }
    virtual const char *what() const throw();
    
protected:
    QString m_directory;
};

class FileReadFailed : virtual public std::exception
{
public:
    FileReadFailed(QString file) throw();
    virtual ~FileReadFailed() throw() { }
    virtual const char *what() const throw();

protected:
    QString m_file;
};

class FileOperationFailed : virtual public std::exception
{
public:
    FileOperationFailed(QString file, QString operation) throw();
    virtual ~FileOperationFailed() throw() { }
    virtual const char *what() const throw();

protected:
    QString m_file;
    QString m_operation;
};

class InsufficientDiscSpace : virtual public std::exception
{
public:
    InsufficientDiscSpace(QString directory,
                          size_t required, size_t available) throw();
    InsufficientDiscSpace(QString directory) throw();
    virtual ~InsufficientDiscSpace() throw() { }
    virtual const char *what() const throw();

    QString getDirectory() const { return m_directory; }
    size_t getRequired() const { return m_required; }
    size_t getAvailable() const { return m_available; }

protected:
    QString m_directory;
    size_t m_required;
    size_t m_available;
};

class AllocationFailed : virtual public std::exception
{
public:
    AllocationFailed(QString purpose) throw();
    virtual ~AllocationFailed() throw() { }
    virtual const char *what() const throw();

protected:
    QString m_purpose;
};

#endif