script/import_storage, half-way done. The idea is to have it output a series of INSERT statements that the user can review and execute in a database of user's choice. The part that I have done loads the Madeleine storage and iterates through webs/pages/revisions there

script/import_storage

@@ -0,0 +1,94 @@
+#!/usr/bin/env ruby
+
+require 'optparse'
+
+OPTIONS = {
+  :instiki_root => nil,
+  :storage => nil,
+}
+
+ARGV.options do |opts|
+  script_name = File.basename($0)
+  opts.banner = "Usage: ruby #{script_name} [options]"
+
+  opts.separator ""
+
+  opts.on("-t", "--storage /full/path/to/storage", String,
+          "Full path to your storage, ",
+          "such as /home/joe/instiki/storage/2500",
+          "It should be the directory that ",
+          "contains .snapshot files.") do |storage|
+            OPTIONS[:storage] = storage
+          end
+          
+  opts.separator ""
+
+  opts.on("-i", "--instiki /full/path/to/instiki", String,
+          "Full path to your Instiki installation, ",
+          "such as /home/joe/instiki") do |instiki| 
+            OPTIONS[:instiki] = instiki
+          end
+
+  opts.separator ""
+
+  opts.on_tail("-h", "--help",
+          "Show this help message.") { puts opts; exit }
+
+  opts.parse!
+end
+
+if OPTIONS[:instiki].nil? or OPTIONS[:storage].nil?
+  $stderr.puts "Please specify full paths to Instiki installation and storage"
+  $stderr.puts 
+  puts ARGV.options
+  exit -1
+end
+
+raise "Directory #{OPTIONS[:instiki]} not found" unless File.directory?(OPTIONS[:instiki])
+raise "Directory #{OPTIONS[:storage]} not found" unless File.directory?(OPTIONS[:storage])
+
+expected_page_rb_path = File.join(OPTIONS[:instiki], 'app/models/page.rb')
+raise "Instiki installation not found in #{OPTIONS[:instiki]}" unless File.file?(expected_page_rb_path)
+
+expected_snapshot_pattern = File.join(OPTIONS[:storage], '*.snapshot')
+raise "No snapshots found in OPTIONS[:storage]" if Dir[expected_snapshot_pattern].empty?
+
+INSTIKI_ROOT = File.expand_path(OPTIONS[:instiki])
+
+ADDITIONAL_LOAD_PATHS = %w(
+  app/models 
+  lib 
+  vendor/madeleine-0.7.1/lib
+  vendor/RedCloth-3.0.3/lib
+  vendor/rubyzip-0.5.8/lib
+).map { |dir| "#{File.expand_path(File.join(INSTIKI_ROOT, dir))}"
+}.delete_if { |dir| not File.exist?(dir) }
+
+# Prepend to $LOAD_PATH
+ADDITIONAL_LOAD_PATHS.reverse.each { |dir| $:.unshift(dir) if File.directory?(dir) }
+
+require 'webrick'
+require 'wiki_service'
+
+class Revision
+  alias :__display_content :display_content
+  def display_content
+    return self
+  end
+end
+
+WikiService.storage_path = OPTIONS[:storage]
+wiki = WikiService.instance
+
+wiki.webs.each_pair do |web_name, web|
+  # INSERT INTO webs goes here
+  puts "Web #{web_name} has #{web.pages.keys.size} pages"
+  web.pages.each_pair do |page_name, page|
+    # INSERT INTO pages goes here
+    puts "  Page #{page_name} has #{page.revisions.size} revisions"
+    page.revisions.each_with_index do |rev, i|
+      # INSERT INTO revisions goes here
+      puts "    Revision #{i} created at #{rev.created_at}"
+    end 
+  end
+end