M3u_Playlist.h

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// M3U playlist file parser, with support for subtrack information
 
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
#ifndef M3U_PLAYLIST_H
#define M3U_PLAYLIST_H
 
#include "blargg_common.h"
#include "Data_Reader.h"
 
class M3u_Playlist {
public:
        // Load playlist data
        blargg_err_t load( const char* path );
        blargg_err_t load( Data_Reader& in );
        blargg_err_t load( void const* data, long size );
        
        // Line number of first parse error, 0 if no error. Any lines with parse
        // errors are ignored.
        int first_error() const { return first_error_; }
        
        struct info_t
        {
                const char* title;
                const char* composer;
                const char* engineer;
                const char* ripping;
                const char* tagging;
        };
        info_t const& info() const { return info_; }
        
        struct entry_t
        {
                const char* file; // filename without stupid ::TYPE suffix
                const char* type; // if filename has ::TYPE suffix, this will be "TYPE". "" if none.
                const char* name;
                bool decimal_track; // true if track was specified in hex
                // integers are -1 if not present
                int track;  // 1-based
                int length; // seconds
                int intro;
                int loop;
                int fade;
                int repeat; // count
        };
        entry_t const& operator [] ( int i ) const { return entries [i]; }
        int size() const { return entries.size(); }
        
        void clear();
        
private:
        blargg_vector<entry_t> entries;
        blargg_vector<char> data;
        int first_error_;
        info_t info_;
        
        blargg_err_t parse();
        blargg_err_t parse_();
};
 
inline void M3u_Playlist::clear()
{
        first_error_ = 0;
        entries.clear();
        data.clear();
}
 
#endif