Python version of https://gist.github.com/3773519 that pulls all bookmarks on the first sync, and does incremental updates afterwards. Also uses the Mac OS X keychain to retrieve your password so it doesn't need to live in a file on your computer in plain text.

allpinboard.rb

#!/usr/bin/ruby
=begin
This script is designed to generate a simple html file with _all_ of your Pinboard.in bookmarks
The HTML file can be added to Launchbar's index as a custom bookmark file and you can search
your entire Pinboard.in collection instantly from Launchbar (by title only). It includes
any applied tags as part of the title to aid in searching.

This does no checking for deltas, it just grabs the whole bunch and overwrites the html file
every time. Don't run it too frequently.

Set your username, password and the path/filename to write to below.
=end
### User configuration
PB_USERNAME = 'username'
PB_PASSWORD = 'password'
BOOKMARK_FILE = 'path/to/store/PinboardBookmarks.html'
### END config

require 'cgi'
require 'fileutils'
require 'net/https'
require 'rexml/document'

class Net::HTTP
  alias_method :old_initialize, :initialize
  def initialize(*args)
    old_initialize(*args)
    @ssl_context = OpenSSL::SSL::SSLContext.new
    @ssl_context.verify_mode = OpenSSL::SSL::VERIFY_NONE
  end
end

def get_bookmarks
    xml = ''
    http = Net::HTTP.new('api.pinboard.in', 443)
    http.use_ssl = true
    http.start do |http|
    	request = Net::HTTP::Get.new('/v1/posts/all')
    	request.basic_auth PB_USERNAME,PB_PASSWORD
    	response = http.request(request)
    	response.value
    	xml = response.body
    end
    return REXML::Document.new(xml)
  end

  def bookmarks_to_array(doc)
    bookmarks = []
    doc.elements.each('posts/post') do |ele|
      post = {}
      ele.attributes.each {|key,val|
        post[key] = val;
      }
      bookmarks.push(post)
    end
    return bookmarks
  end

  bookmarks = bookmarks_to_array(get_bookmarks)
  output = ""
  bookmarks.each do |b|
    output += %Q{<a href="#{b['href']}" title="#{CGI.escapeHTML(b['extended']).gsub(/\n/,' ')}">#{b['description'].gsub(/\n+/,"\n")} @#{b['tag'].split(' ').join(' @')}</a>\n}
  end

# Append to a file:
open(File.expand_path(BOOKMARK_FILE), 'w') { |f|
    f.puts output
}