woodie/Gemfile .rb

## README.rdoc

      
    Raw
  

              README.rdoc
            
          
Mechanize with Hpricot on AppEngine¶ ↑


Here is a Rack app that does a Google Search using Mechanize:

mechanize-hpricot.appspot.com

We are using Mechanize 0.8.5 and Hpricot 0.8.2. The most recent version Mechanize uses Nokogiri, which requires native libraries and therefore does not work on AppEngine. There is an effort to finish up the pure-Java Nokogiri, maybe YOU can help.

www.serabe.com/2009/12/31/helping-nokogiri-take-ii

Special thanks to _Why, Ola Bini and Nick Sieger for creating, porting and maintaining Hpricot. Mechanize is my favorite gem of all time, so thanks to Aaron Patterson and Mike Dalessio for creating such an awesome tool. Here is a nice screencast.

www.bestechvideos.com/2009/12/07/railscasts-191-mechanize

When using gems with Java extensions, appengine-tools drops the appropriate jars into WEB-INF/lib for you.

find .gems -name "*.jar"
.gems/bundler_gems/jruby/1.8/gems/hpricot-0.8.2-java/lib/fast_xs.jar
.gems/bundler_gems/jruby/1.8/gems/hpricot-0.8.2-java/lib/hpricot_scan.jar

  
## config.ru
require 'appengine-rack'
require 'appengine-apis/urlfetch'
require 'mechanize'

AppEngine::Rack.configure_app(
    :application => "mechanize-hpricot",
    :precompilation_enabled => true,
    :version => "1")

def my_search(query)
  out = []
  a = WWW::Mechanize.new { |agent| agent.user_agent_alias = 'Mac Safari' }
  a.get('http://google.com/') do |page|
    search_result = page.form_with(:name => 'f') do |search|
      search.q = query
    end.submit
    search_result.links.each do |link|
      out << link.text if link.text =~ /#{query}/i
    end
  end
  out
end

def my_html(query)
  title = "Mechanize with Hpricot on AppEngine"
  html = <<HTML
<html><head><title>#{title}</title></head><body>
<h2>#{title}</h2><p>This is a Google Search for: #{query}</p>
<ul><li>#{my_search(query).join("</li><li>")}</li></ul>
</body></html>
HTML
  html
end

run lambda { |env| [200, {}, my_html('appengine-jruby') ] }

## Gemfile .rb
# Critical default settings:
disable_system_gems
disable_rubygems
bundle_path ".gems/bundler_gems"

# List gems to bundle here:
gem "appengine-rack"
gem "appengine-apis"
gem 'hpricot',   '0.8.2'
gem 'mechanize', '0.8.5'

## gistfile4.txt
$ dev_appserver.rb .
=> Booting DevAppServer
=> Press Ctrl-C to shutdown server
=> Bundling gems
Calculating dependencies...
Updating source: http://gems.rubyforge.org
Caching: appengine-apis-0.0.12.gem
Caching: appengine-rack-0.0.6.gem
Downloading hpricot-0.8.2-java.gem
Downloading mechanize-0.8.5.gem
Downloading rack-1.1.0.gem
Installing hpricot (0.8.2)
Installing rack (1.1.0)
Installing appengine-rack (0.0.6)
Installing appengine-apis (0.0.12)
Installing mechanize (0.8.5)
Done.
=> Packaging gems
Installing fast_xs.jar
Installing hpricot_scan.jar
The server is running at http://localhost:8080/
	require 'appengine-rack'
	require 'appengine-apis/urlfetch'
	require 'mechanize'

	AppEngine::Rack.configure_app(
	:application => "mechanize-hpricot",
	:precompilation_enabled => true,
	:version => "1")

	def my_search(query)
	out = []
	a = WWW::Mechanize.new { \|agent\| agent.user_agent_alias = 'Mac Safari' }
	a.get('http://google.com/') do \|page\|
	search_result = page.form_with(:name => 'f') do \|search\|
	search.q = query
	end.submit
	search_result.links.each do \|link\|
	out << link.text if link.text =~ /#{query}/i
	end
	end
	out
	end

	def my_html(query)
	title = "Mechanize with Hpricot on AppEngine"
	html = <<HTML
	<html><head><title>#{title}</title></head><body>
	<h2>#{title}</h2><p>This is a Google Search for: #{query}</p>
	<ul><li>#{my_search(query).join("</li><li>")}</li></ul>
	</body></html>
	HTML
	html
	end

	run lambda { \|env\| [200, {}, my_html('appengine-jruby') ] }
	# Critical default settings:
	disable_system_gems
	disable_rubygems
	bundle_path ".gems/bundler_gems"

	# List gems to bundle here:
	gem "appengine-rack"
	gem "appengine-apis"
	gem 'hpricot', '0.8.2'
	gem 'mechanize', '0.8.5'
	$ dev_appserver.rb .
	=> Booting DevAppServer
	=> Press Ctrl-C to shutdown server
	=> Bundling gems
	Calculating dependencies...
	Updating source: http://gems.rubyforge.org
	Caching: appengine-apis-0.0.12.gem
	Caching: appengine-rack-0.0.6.gem
	Downloading hpricot-0.8.2-java.gem
	Downloading mechanize-0.8.5.gem
	Downloading rack-1.1.0.gem
	Installing hpricot (0.8.2)
	Installing rack (1.1.0)
	Installing appengine-rack (0.0.6)
	Installing appengine-apis (0.0.12)
	Installing mechanize (0.8.5)
	Done.
	=> Packaging gems
	Installing fast_xs.jar
	Installing hpricot_scan.jar
	The server is running at http://localhost:8080/