Perl6 必应抓取(1)：测试版代码

一个相当丑漏的代码， 以后有时间再优化了。

默认所有查找都是15页， 如果结果没有15页这么多估计会有重复。速度还是很快的。

sub MAIN() {
  my $fp = open 'bin_result.txt', :w;
  my $number = ;
  print 'String:';
  my $string = get;
  $string  = do given $string {S:g/\s/+/};
  use HTTP::UserAgent;
  my $url = 'http://cn.bing.com/search?q=';
  my $ua = HTTP::UserAgent.new;
  my $check = rx/'<'cite'>'(.*?)'</cite>'/;#要查的内容
  my @number = '';
  @number.append(..$number);
  my $page='';
  my $html;
  my $target = $url~$string~'&first=20&FROM=FERE'~$page;
  $html = $ua.get($target).content;
  loop {
    say '===============> '~$target;
    $html ~~ $check;
    $html = $/.postmatch;
    #$0 = do given ~$0 {S:g/'<strong>'//;}
    if not $ {
      #当是null时， 说明这一页已全部提取， 构造下一页
      $page = Int($page);
      my $page_next = $string~'&first='~$page~'0&FROM=FERE'~$page;
      $target = $url~$page_next;
      $html = $ua.get($target).content;
      $page++;
    #/search?q=123&first=10&FORM=PERE
    #/search?q=123&first=20&FORM=PERE1
    #/search?q=123&first=30&FORM=PERE2
    #/search?q=123&first=30&FORM=PERE2
    #last;
     $html ~~ $check;
        $html = $/.postmatch;
        if ($page > $number) {last;}
    }
    my $ok_check = $.Str;
    my $result = $ok_check;
    $result = do given $result {S:g/'<strong>'//;}
    $result = do given $result {S:g/'</strong>'//;}
    say $result;
    $fp.say($result);

  }
  #$fp.print($html);
}

下次代码优化：

总结一下必应的规律， 如下：

http://cn.bing.com/search?q=&first=&FORM=PERE
http://cn.bing.com/search?q=&first=&FORM=PERE
http://cn.bing.com/search?q=&first=&FORM=PERE1
http://cn.bing.com/search?q=&first=&FORM=PERE2
http://cn.bing.com/search?q=&first=&FORM=PERE3
http://cn.bing.com/search?q=&first=&FORM=PERE4
http://cn.bing.com/search?q=&first=&FORM=PERE4
http://cn.bing.com/search?q=&first=&FORM=PERE4
http://cn.bing.com/search?q=&first=&FORM=PERE4
http://cn.bing.com/search?q=&first=&FORM=PERE4

在页面上测试， 参数只虽两个即可:

q=查询字符串&first=起始帐号