view data/fileio/PlaylistFileReader.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 2007 QMUL.
    
    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 _PLAYLIST_FILE_READER_H_
#define _PLAYLIST_FILE_READER_H_

#include "FileSource.h"

#include <QString>

#include <vector>
#include <set>

class QFile;

class PlaylistFileReader
{
public:
    typedef std::vector<QString> Playlist;

    PlaylistFileReader(QString path);
    PlaylistFileReader(FileSource source);
    virtual ~PlaylistFileReader();

    virtual bool isOK() const;
    virtual QString getError() const;
    virtual Playlist load() const;

    static void getSupportedExtensions(std::set<QString> &extensions);

protected:
    void init();

    FileSource m_source;
    QFile *m_file;
    QString m_basedir;
    QString m_error;
};

#endif