instiki/script/debug_storage

#!/usr/bin/ruby

=begin
The purpose of this script is to help people poke around in the Madeleine storage. 

Two caveats:
1. You MUST be a reasonably good Ruby programmer to use it successfully for anything non-trivial.
2. It's very easy to screw up something by poking in the storage internals. If you do, please 
   undo your changes by deleting the most recent snapshot(s) and don't ask for help.

Usage example:

E:\eclipse\workspace\instiki\script>irb
irb(main):001:0> load 'debug_storage'
Enter path to storage [E:/eclipse/workspace/instiki/storage/2500]:
Loading storage from the default storage path (E:/eclipse/workspace/instiki/storage/2500)
Instiki storage from E:/eclipse/workspace/instiki/storage/2500 is loaded.
Access it via global variable $wiki.
Happy poking!
=> true
irb(main):003:0> $wiki.system
=> {"password"=>"foo"}
irb(main):005:0> $wiki.system['password'] = 'bar'
=> "bar"
irb(main):006:0> $wiki.webs.keys
=> ["wiki1", "wiki2"]
irb(main):007:0> $wiki.webs['wiki1'].password = 'the_password'
=> "the_password"
irb(main):008:0> WikiService::snapshot
=> []


Things that are possible:

# cleaning old revisions
$wiki.webs['wiki'].pages['HomePage'].revisions = $wiki.webs['wiki'].pages['HomePage'].revisions[-1..-1]

# Changing contents of a revision
$wiki.webs['wiki'].pages['HomePage'].revisions[-1] = 'new content'

# Checking that all pages can be rendered by the markup engine
$wiki.webs['wiki'].pages.each_pair do |name, page|
  page.revisions.each_with_index do |revision, i|
    begin
      revision.display_content
    rescue =>
      puts "Error when rendering revision ##{i} of page #{name.inspect}:"
      puts e.message
      puts e.backtrace.join("\n")
    end
end
=end

require 'fileutils'
require 'optparse'
require 'webrick'

default_storage_path = File.expand_path(File.dirname(__FILE__) + "/../storage/2500")

print "Enter path to storage [#{default_storage_path}]: "
storage_path = gets.chomp
if storage_path.empty?
  storage_path = default_storage_path
  puts "Loading storage from the default storage path (#{storage_path})"
else
  puts "Loading storage from the path you entered (#{storage_path})"
end

unless File.directory?(storage_path) and not 
    (Dir["#{storage_path}/*.snapshot"] + Dir["#{storage_path}/*.command_log"]).empty?
  raise "Found no storage at #{storage_path}" 
end

RAILS_ROOT = File.expand_path(File.dirname(__FILE__) + '/../') unless defined? RAILS_ROOT

unless defined? ADDITIONAL_LOAD_PATHS
  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(RAILS_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) }
end

require 'wiki_service'

WikiService.storage_path = storage_path
$wiki = WikiService.instance
puts "Instiki storage from #{storage_path} is loaded."
puts 'Access it via global variable $wiki.'
puts 'Happy poking!'
nil