VipsForeignSave

typedef struct _VipsForeignSaveCsv {
    VipsForeignSave parent_object;

    char *filename;
    const char *separator;
} VipsForeignSaveCsv;

typedef VipsForeignSaveClass VipsForeignSaveCsvClass;

G_DEFINE_TYPE(VipsForeignSaveCsv, vips_foreign_save_csv,
  VIPS_TYPE_FOREIGN_SAVE);

static int
vips_foreign_save_csv_build(VipsObject *object)
{
    VipsForeignSave *save = (VipsForeignSave *) object;
    VipsForeignSaveCsv *csv = (VipsForeignSaveCsv *) object;

    if (VIPS_OBJECT_CLASS(vips_foreign_save_csv_parent_class)
            ->build(object))
        return -1;

    if (vips__csv_write(save->ready, csv->filename, csv->separator))
      return -1;

    return 0;
}

static void
vips_foreign_save_csv_class_init(VipsForeignSaveCsvClass *class)
{
    GObjectClass *gobject_class = G_OBJECT_CLASS(class);
    VipsObjectClass *object_class = (VipsObjectClass *) class;
    VipsForeignClass *foreign_class = (VipsForeignClass *) class;
    VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;

    gobject_class->set_property = vips_object_set_property;
    gobject_class->get_property = vips_object_get_property;

    object_class->nickname = "csvsave";
    object_class->description = _("save image to csv file");
    object_class->build = vips_foreign_save_csv_build;

    foreign_class->suffs = vips__foreign_csv_suffs;

    save_class->saveable = VIPS_SAVEABLE_MONO;
    // no need to define ->format_table, we don't want the input
    // cast for us

    VIPS_ARG_STRING(class, "filename", 1,
        _("Filename"),
        _("Filename to save to"),
        VIPS_ARGUMENT_REQUIRED_INPUT,
        G_STRUCT_OFFSET(VipsForeignSaveCsv, filename),
        NULL);

    VIPS_ARG_STRING(class, "separator", 13,
        _("Separator"),
        _("Separator characters"),
        VIPS_ARGUMENT_OPTIONAL_INPUT,
        G_STRUCT_OFFSET(VipsForeignSaveCsv, separator),
        "\t");
}

static void
vips_foreign_save_csv_init(VipsForeignSaveCsv *csv)
{
    csv->separator = g_strdup("\t");
}