rockbox/apps/plugins/favorites.c

#include "plugin.h"
#define FAVORITES_FILE "/favorites.m3u"

static struct plugin_api* rb;

enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
    struct mp3entry* id3;
    char track_path[MAX_PATH+1];
    int fd, result, len;
    
    /* this macro should be called as the first thing you do in the plugin.
       it test that the api version and model the plugin was compiled for
       matches the machine it is running on */
    TEST_PLUGIN_API(api);

    rb = api;

    /* If we were passed a parameter, use that as the file name,
       else take the currently playing track */
    if(parameter) {
        rb->strncpy(track_path, parameter, MAX_PATH);
    } else {
        id3 = rb->audio_current_track();
        if (!id3) {
            rb->splash(HZ*2, true, "Nothing To Save");
            return PLUGIN_OK;
        }
        rb->strncpy(track_path, id3->path, MAX_PATH);
    }

    track_path[MAX_PATH] = 0;
    
    len = rb->strlen(track_path);

    fd = rb->open(FAVORITES_FILE, O_CREAT|O_WRONLY|O_APPEND);

    if (fd >= 0) {
        // append the current mp3 path
        track_path[len] = '\n';
        result = rb->write(fd, track_path, len + 1);
        track_path[len] = '\0';
        rb->close(fd);
    }

    rb->splash(HZ*2, true, "Saved Favorite");

    return PLUGIN_OK;
}