Saving and Restoring a GTK:TreeModel

ruby-talk
1

Hi,

Here is a small snippet of my code that saves and restores a
Gtk::Treemodel to/from a file. Just because i searched a while, before i
decided, i had to do it all by myself

The code is without any error handling, is tailored for a special
TreeStore and saves a model with two columns( string, string), which
should be no problem to change, if more columns or other datatypes occure.

class Tagtree

  def self.store treemodel, file_name
    file = File.new(file_name,'w+')
    treemodel.each do |model, path, iter|
      file.puts path.to_s << "|" << iter[0] << "|" << iter[1]
    end
    file.close
  end

  def self.load model, file_name
      anchors=Array.new
      olditer, depth =nil, 0
      IO.foreach(file_name) do |line|
      fields=line.split('|')
      position=fields[0].split(':')
      anchors[depth] = olditer
      entry=model.append(anchors[position.length-1])
      entry[0]=fields[1]
      entry[1]=fields[2]
      depth, olditer = position.length, entry
      end
  end
end

Usage:

Tagtree.store(treemodel,"filetostore")
Tagtree.loade(treemodel,"filetostore")