st-oldcache-load.c

linux下网络收音机的源码

	      st_oldcache_load_value_array_value(&info);
	      break;

	    case STATEMENT_HANDLER_CATEGORY_STREAMS_STREAM_FIELDS_ARRAY_ARRAY:
	      st_oldcache_load_child_value_array_value(&info);
	      break;

	    default:
	      g_scanner_warn(info.parser->scanner, _("unexpected value"));
	    }
	}

      sg_parser_statement_evaluate(info.statement);
      sg_parser_statement_free(info.statement);
    }

  sg_parser_free(info.parser);
  
  return TRUE;
}

static void
st_oldcache_load_handler_begin (LoadInfo *info)
{
  const char *name;

  name = g_value_get_string(&info->statement->value);

  if (! strcmp(name, "live365")
      || ! strcmp(name, "local")
      || ! strcmp(name, "xiph"))
    {
      g_scanner_warn(info->parser->scanner, _("obsolete cache format, ignoring handler"));
      return;
    }

  info->handler = st_handlers_find_by_name(name);

  if (info->handler)
    {
      info->handler_parents = g_hash_table_new(g_str_hash, g_str_equal);
      info->handler_categories = st_handler_get_categories(info->handler);
    }
  else
    g_scanner_warn(info->parser->scanner, _("%s: no such handler"), name);
}

static void
st_oldcache_load_handler_end (LoadInfo *info)
{
  if (! info->handler)
    return;

  g_hash_table_destroy(info->handler_parents);
  g_object_unref(info->handler_categories);
  
  info->handler = NULL;
  info->handler_categories = NULL;
  info->handler_parents = NULL;
}

static void
st_oldcache_load_category_begin (LoadInfo *info)
{
  const char *category_name;

  if (! info->handler)
    return;

  category_name = g_value_get_string(&info->statement->value);
  if (ST_CATEGORY_BAG_NAME_IS_STOCK(category_name))
    {
      info->category_bag = st_handler_get_stock_category(info->handler, category_name);
      if (! info->category_bag)
	g_scanner_warn(info->parser->scanner, _("%s: no such stock category"), category_name);
    }
  else
    {
      info->category_bag = st_category_bag_new(info->handler);
      ST_CATEGORY(info->category_bag)->name = g_strdup(category_name);
    }
}

static void
st_oldcache_load_category_end (LoadInfo *info)
{
  if (! (info->handler && info->category_bag))
    return;

  if (! ST_CATEGORY_BAG_IS_STOCK(info->category_bag))
    {
      STCategoryBag *parent = NULL;

      if (info->category_parent_name)
	{
	  parent = g_hash_table_lookup(info->handler_parents,
					       info->category_parent_name);
	  if (! parent)
	    g_scanner_warn(info->parser->scanner,
			   _("parent category \"%s\" not found"),
			   info->category_parent_name);
	}

      g_hash_table_insert(info->handler_parents,
			  ST_CATEGORY(info->category_bag)->name,
			  info->category_bag);

      st_category_store_append(info->handler_categories,
			       info->category_bag,
			       parent);
      g_object_unref(info->category_bag);
    }
  
  if (info->category_streams)
    {
      st_handler_set_streams(info->handler,
			     ST_CATEGORY(info->category_bag)->name,
			     info->category_streams);
      g_object_unref(info->category_streams);
    }
  
  g_free(info->category_parent_name);

  info->category_bag = NULL;
  info->category_parent_name = NULL;
  info->category_streams = NULL;
}

static void
st_oldcache_load_stream_begin (LoadInfo *info)
{
  if (! (info->handler && info->category_bag))
    return;

  info->stream_bag = st_stream_bag_new(info->handler);
  ST_STREAM(info->stream_bag)->name = g_value_dup_string(&info->statement->value);
}

static void
st_oldcache_load_stream_end (LoadInfo *info)
{
  if (! (info->handler && info->stream_bag))
    return;

  if (! info->category_streams)
    {
      info->category_streams = st_stream_store_new(info->handler);
      st_stream_store_touch(info->category_streams);
    }

  st_stream_store_append(info->category_streams, info->stream_bag);
  g_object_unref(info->stream_bag);

  info->stream_bag = NULL;
  info->stream_field_iter = NULL;
  info->stream_field = NULL;
}

static void
st_oldcache_load_pop_field (LoadInfo *info)
{
  while (info->stream_field_iter)
    {
      info->stream_field = info->stream_field_iter->data;
      info->stream_field_iter = info->stream_field_iter->next;

      if (! ST_HANDLER_FIELD_IS_VOLATILE(info->stream_field))
	return;
    }

  info->stream_field = NULL;	/* not found */
  g_scanner_warn(info->parser->scanner, _("too many fields"));
}

static void
st_oldcache_load_stream_field (LoadInfo *info)
{
  if (! (info->handler && info->stream_bag))
    return;

  st_oldcache_load_pop_field(info);
  if (info->stream_field)
    {
      if (st_handler_field_get_type(info->stream_field) == GDK_TYPE_PIXBUF && G_VALUE_HOLDS_STRING(&info->statement->value))
	{
	  const char *filename;

	  filename = g_value_get_string(&info->statement->value);
	  if (filename)
	    {
	      GdkPixbuf *pixbuf;
	      GError *err = NULL;
	      
	      pixbuf = gdk_pixbuf_new_from_file(filename, &err);
	      if (pixbuf)
		{
		  GValue value = { 0, };
		  
		  g_value_init(&value, GDK_TYPE_PIXBUF);
		  g_value_set_object(&value, pixbuf);
		  g_object_unref(pixbuf);

		  st_stream_bag_set_field(info->stream_bag, info->stream_field, &value);
		  g_value_unset(&value);
		}
	      else
		{
		  g_scanner_warn(info->parser->scanner, "%s", err->message);
		  g_error_free(err);
		}
	    }
	}
      else if (G_VALUE_HOLDS(&info->statement->value, st_handler_field_get_type(info->stream_field)))
	st_stream_bag_set_field(info->stream_bag, info->stream_field, &info->statement->value);
      else
	g_scanner_warn(info->parser->scanner, _("wrong field type"));
    }
}

static void
st_oldcache_load_value_array_begin (LoadInfo *info)
{
  if (! (info->handler && info->stream_bag))
    return;

  st_oldcache_load_pop_field(info);
  if (info->stream_field)
    {
      if (st_handler_field_get_type(info->stream_field) == G_TYPE_VALUE_ARRAY)
	info->value_array = g_value_array_new(0);
      else
	g_scanner_warn(info->parser->scanner, _("wrong field type"));
    }
}

static void
st_oldcache_load_value_array_value (LoadInfo *info)
{
  if (! (info->handler && info->value_array))
    return;

  g_value_array_append(info->value_array, &info->statement->value);
}

static void
st_oldcache_load_value_array_end (LoadInfo *info)
{
  GValue value = { 0, };
  
  if (! (info->handler && info->value_array))
    return;

  g_value_init(&value, G_TYPE_VALUE_ARRAY);
  g_value_take_boxed(&value, info->value_array);

  st_stream_bag_set_field(info->stream_bag, info->stream_field, &value);
  g_value_unset(&value);

  info->value_array = NULL;
}

static void
st_oldcache_load_child_value_array_begin (LoadInfo *info)
{
  if (! (info->handler && info->value_array))
    return;

  info->child_value_array = g_value_array_new(0);
}

static void
st_oldcache_load_child_value_array_value (LoadInfo *info)
{
  if (! (info->handler && info->child_value_array))
    return;

  g_value_array_append(info->child_value_array, &info->statement->value);
}

static void
st_oldcache_load_child_value_array_end (LoadInfo *info)
{
  GValue value = { 0, };
  
  if (! (info->handler && info->child_value_array))
    return;

  g_value_init(&value, G_TYPE_VALUE_ARRAY);
  g_value_take_boxed(&value, info->child_value_array);

  st_stream_bag_set_field(info->stream_bag, info->stream_field, &value);
  g_value_array_append(info->value_array, &value);
  g_value_unset(&value);

  info->child_value_array = NULL;
}