Module: BaiduWeb

Defined in:
lib/baidu_web.rb,
lib/baidu_web/record.rb,
lib/baidu_web/version.rb,
lib/baidu_web/extension_key.rb

Defined Under Namespace

Classes: ExtensionKey, Record

Constant Summary collapse

VERSION = 
"0.2.5"

Class Method Summary collapse

Class Method Details

.search(key_word, options) ⇒ Object 



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# File 'lib/baidu_web.rb', line 17

def search(key_word, options)
  result = {:record_arr => [], :ext_key_arr => [], :source => 'web'}

  @ic2 = Iconv.new('gb2312//IGNORE', 'UTF-8//IGNORE')
  @key_word = key_word
  return result if @key_word.blank?
  #uri parser key word
  @key_word = CGI.escape(@ic2.iconv(@key_word))

  #determine how many records display on one page. (same as www.baidu.com/?<some params>&rn=50)
  @per_page = options[:per_page]
  @per_page ||= 50

  #get which page of result. (same as www.baidu.com/?<some params>&pn=0)
  @page_index = options[:page_index]
  @page_index ||= 1

  #get the start item index.
  item_index = (@page_index - 1 ) * @per_page

  agent = Mechanize.new

  url = "http://www.baidu.com/s?wd=#{@key_word}&rn=#{@per_page}&pn=#{item_index}"
  #debug: url
  spage = agent.get(url)
  #debug
  # File.open(File.join(File.dirname(__FILE__), 'baidu_result.html'), "w"){|f| f.write(@ic.iconv(spage.body))}

  #doc = Hpricot(@ic.iconv(spage.body))
  doc = Hpricot(spage.body)

  #- this is hack on linux:
  #case1:
  # result_page = @ic.iconv(open("http://www.baidu.com/s?wd=#{@key_word}&rn=#{@per_page}&pn=#{item_index}").read)
  #case2:
  # result_page = ""
  # open("http://www.baidu.com/s?wd=#{@key_word}&rn=#{@per_page}&pn=#{item_index}", "r:utf-8") {|f|
  #   f.each_line do |line|
  #     result_page += @ic.iconv(line)
  #   end
  # }

  return result if doc.nil?
  
  result[:record_arr] = extract_item(doc, item_index)
  result[:ext_key_arr] = extract_extension_key(doc)
  #debug
  puts result[:record_arr].size
  
  return result
end