This example will find all code tags and pass the lang attribute’s value and the code block’s content to the block:

   1  output = r.gsub(/<code[\.|\:]([\w\-]+)>(.*?)<\/code[\.|\:]?\1?>/m) do
   2         lang, text = $1, $2
   3         html = "<notextile>" + text +  "</notextile>"
   4  end.to_html

The block’s return value will replace the found tag.

   1  class Hash
   2    def except(*blacklist)
   3      reject {|key, value| blacklist.include?(key) }
   4    end
   5  
   6    def only(*whitelist)
   7      reject {|key, value| !whitelist.include?(key) }
   8    end
   9  end

   1  class Hash
   2    def stringify
   3      inject({}) do |options, (key, value)|
   4        options[key.to_s] = value.to_s
   5        options
   6      end
   7    end
   8  
   9    def stringify!
  10      each do |key, value|
  11        delete(key)
  12        store(key.to_s, value.to_s)
  13      end
  14    end
  15  end

   1  git clone git://github.com/etrepum/tokyo-cabinet.git
   2  git clone git://github.com/etrepum/tokyo-tyrant.git
   3  
   4  
   5  cd tokyo-cabinet/
   6  ./configure
   7  make
   8  sudo make install
   9  
  10  cd ..
  11  
  12  cd tokyo-tyrant/
  13  ./configure
  14  make
  15  sudo make install
  16  
  17  ttserver -port 45001 data.tch
  18  
  19  sudo gem install rufus-tokyo
  20  
  21  cat <<EOF >>test.rb
  22  
  23  require 'rubygems'
  24  require 'rufus/tokyo/tyrant'
  25  require 'benchmark'
  26  
  27  
  28  #db = Rufus::Tokyo::Cabinet.new('data.tch')
  29  
  30  db = Rufus::Tokyo::Tyrant.new('localhost', 45001)
  31   
  32   seconds = Benchmark.realtime do
  33    for i in 1..1000000
  34      db['nada' + i.to_s] = 'surf' + i.to_s
  35    end
  36  end
  37  
  38  puts seconds
  39  db.close
  40  
  41  EOF
  42  
  43  ruby test.rb

Gotchas

One gotcha I learned was that you should only use strings not symbols. If you use symbols you’ll get this weird error:

   1  Invalid String value

Another gotcha is that Tokyo Cabinet will lock a database. If you try to open the same database from another process it will wait for the other process to close the database.

Debian

On Debian you need to install bzlib before installing tokyo-cabinet:

   1  apt-get install libbz2-dev

Redis and redis-rb example:

   1  git clone git://github.com/ezmobius/redis-rb.git
   2  cd redis-rb/
   3  rake redis:install
   4  rake dtach:install
   5  rake redis:start &
   6  rake install
   7  
   8  cat <<EOF >>test.rb
   9  require 'rubygems'
  10  require 'redis'
  11  
  12  r = Redis.new
  13  
  14  r.delete('foo')
  15  
  16  p'set foo to "bar"'
  17  r['foo'] = 'bar'
  18  
  19  p 'value of foo'
  20  p r['foo']
  21  EOF
  22  
  23  ruby test.rb

If Redis is not started Ruby will exit at Redis.new for some reason without saying anything.