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# frozen_string_literal: true
# This file is part of the ruby-dbus project
# Copyright (C) 2007 Arnaud Cornet and Paul van Tilburg
# Copyright (C) 2023 Martin Vidner
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License, version 2.1 as published by the Free Software Foundation.
# See the file "COPYING" for the exact licensing terms.
module DBus
# Has a tree of {Node}s, refering to {Object}s or to {ProxyObject}s.
class NodeTree
# @return [Node]
attr_reader :root
def initialize
@root = Node.new("/")
end
# Get the object node corresponding to the given *path*.
# @param path [ObjectPath]
# @param create [Boolean] if true, the the {Node}s in the path are created
# if they do not already exist.
# @return [Node,nil]
def get_node(path, create: false)
n = @root
path.sub(%r{^/}, "").split("/").each do |elem|
if !(n[elem])
return nil if !create
n[elem] = Node.new(elem)
end
n = n[elem]
end
n
end
end
# = Object path node class
#
# Class representing a node on an object path.
class Node < Hash
# @return [DBus::Object,DBus::ProxyObject,nil]
# The D-Bus object contained by the node.
attr_accessor :object
# The name of the node.
# @return [String] the last component of its object path, or "/"
attr_reader :name
# Create a new node with a given _name_.
def initialize(name)
super()
@name = name
@object = nil
end
# Return an XML string representation of the node.
# It is shallow, not recursing into subnodes
# @param node_opath [String]
def to_xml(node_opath)
xml = '<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
'
xml += "<node name=\"#{node_opath}\">\n"
each_key do |k|
xml += " <node name=\"#{k}\" />\n"
end
@object&.intfs&.each_value do |v|
xml += v.to_xml
end
xml += "</node>"
xml
end
# Return inspect information of the node.
def inspect
# Need something here
"<DBus::Node #{sub_inspect}>"
end
# Return instance inspect information, used by Node#inspect.
def sub_inspect
s = ""
if !@object.nil?
s += format("%x ", @object.object_id)
end
contents_sub_inspect = keys
.map { |k| "#{k} => #{self[k].sub_inspect}" }
.join(",")
"#{s}{#{contents_sub_inspect}}"
end
# All objects (not paths) under this path (except itself).
# @return [Array<DBus::Object>]
def descendant_objects
children_objects = values.map(&:object).compact
descendants = values.map(&:descendant_objects)
flat_descendants = descendants.reduce([], &:+)
children_objects + flat_descendants
end
end
end
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