gistfile1.php

<?php
class Config{
  const TITLE = 'わたしのほうむぺいじ☆';
  const URL = 'http://pc11.2ch.net/test/read.cgi/php/1222645553/';
  const DESCRIPTION = 'わたしのさいとのすてきな掲示板です☆ミ';
  const GENERATOR = '俺様の書いた最強RSSジェネレーター';
  /*
   * RSSヘッダの画像ファイル名。
   */
  const RSS_IMAGE = 'cat1.gif';

  /*
   * RSSに載せる件数。
   */
  const ITEM_AMOUNT = '40';

  /*
   * 記事中のアイコン表示と、RSSヘッダの画像を格納するフォルダ。
   */
  const IMAGE_DIR_URL = 'http://localhost/ibbs/Icon/';
  const LOG_FILE = 'ibbs.dat';
  const LOG_DIR = './';
}

class Node{
  private $name;
  private $content;
  private $a_attributes = array();
  private $a_children = array();
  function appendChild($node){
    $this->a_children[] = $node;
  }
  function asXml($level = 0){
    $return  = '<' . $this->name . $this->getJoinedAttributes() . '>';
    if(null === $this->content){
      $return .= "\n";
    }
    
    foreach($this->a_children as $child){
      for($i=0;$i<$level;$i++){
        $return .= '  ';
      }
      $return .= $child->asXml($level+1);
    }
    if(null !== $this->content){
      $return .= $this->content;
    }
    $return .= '</' . $this->name . ">\n";
    return $return;
  }
  function __construct($name, $content = null){
    $this->name = $name;
    $this->content = $content;
  }
  function setAttribute($key, $name){
    $this->a_attributes[$key] = $name;
  }
  private function getJoinedAttributes(){
    if(0 === count($this->a_attributes)){
      return '';
    }
    $return = '';
    foreach($this->a_attributes as $k => $v){
      $return .= ' ';
      $return .= $k . '="' . htmlspecialchars($v, ENT_QUOTES) . '"';
    }
    return $return;
  }
}
class Log{
  private $a_entries = array();
  private $last_modified;
  function __construct($log_filename){
    $handle = fopen($log_filename, 'r');
    if(false === $handle){
      echo 'ログファイルのオープンに失敗';
      exit(1);
    }
    while (!feof($handle)) {
      $tmp = explode('<>', trim(mb_convert_encoding(fgets($handle), 'UTF-8', 'SJIS')));
      if(count($tmp) < 13){
        continue;
      }
      $this->a_entries[] = new Entry(
        $tmp[0],
        $tmp[1],
        $tmp[2],
        $tmp[3],
        $tmp[4],
        $tmp[5],
        $tmp[6],
        self::fontColor($tmp[7]),
        self::backColor($tmp[7]),
        $tmp[8],
        $tmp[9],
        $tmp[10],
        $tmp[11],
        $tmp[12]
      );
      if(count($this->a_entries) > Config::ITEM_AMOUNT){
        break;
      }
    }
    fclose($handle);
    $this->last_modified = filemtime($log_filename);
  }
  function entries(){
    return $this->a_entries;
  }
  private static function fontColor($color_string){
    $tmp = explode(';', $color_string);
    return $tmp[0];
  }
  private static function backColor($color_string){
    $tmp = explode(';', $color_string);
    return $tmp[1];
  }
  function getRssDate(){
    return date('D, d M Y H i s O', $this->last_modified);
  }
}
class Entry{
  private $article_id;
  private $time;
  private $author_name;
  private $author_mail;
  private $title;
  private $content;
  private $url;
  private $font_color;
  private $back_color;
  private $icon_file;
  private $parent_article;
  private $del_pass;
  private $hostname;
  private $page;
  function __construct($article_id, $time, $author_name, $author_mail, $title, $content, $url,
    $font_color, $back_color, $icon_file, $parent_article, $del_pass, $hostname, $page){
      $this->article_id = $article_id;
      $this->time = self::parseTime($time);
      $this->author_name = $author_name;
      $this->author_mail = $author_mail;
      $this->title = $title;
      $this->content = $content;
      $this->url = $url;
      $this->font_color = $font_color;
      $this->back_color = $back_color;
      $this->icon_file = $icon_file;
      $this->parent_article = $parent_article;
      $this->del_pass = $del_pass;
      $this->hostname = $hostname;
      $this->page = $page;
  }
  static private function parseTime($str){
    return preg_replace('/[^0-9]/', '', $str);
  }
  function asNode(){
    $return = new Node('item');
    $return->appendChild(new node('title', $this->title));
    $return->appendChild(new Node('link', Config::URL));
    $return->appendChild(new Node('guid', Config::URL . '/' . $this->article_id));
    $return->appendChild(new Node('pubDate', $this->getRssDate()));
    $return->appendChild(new Node('description', $this->getDescription()));
    return $return;
  }
  private function getRssDate(){
    $date = mktime(
      substr($this->time, 8, 2),
      substr($this->time, 10, 2),
      substr($this->time, 12, 2),
      substr($this->time, 4, 2),
      substr($this->time, 6, 2),
      substr($this->time, 0, 4)
    );
    return date('D, d M Y H i s ') . '+0900';
  }
  private function getDescription(){
    $return  = "<![CDATA[\n";
    $return .= '<div class="icon">' . '<img src="' . Config::IMAGE_DIR_URL . $this->icon_file . '"></div>';
    $return .= '<div class="content">' . $this->content . '</div>';
    $return .= "\n]]>\n";
    return $return;
  }
}

$rss = new Node('rss');
$rss->setAttribute('version', '2.0');

$log = new Log(Config::LOG_DIR . Config::LOG_FILE);
$channel = new Node('channel');
$channel->appendChild(new Node('title', Config::TITLE));
$channel->appendChild(new Node('link', Config::URL));
$channel->appendChild(new Node('description', Config::DESCRIPTION));
$channel->appendChild(new Node('pubDate', date('D, d M Y H i s O')));
$channel->appendChild(new Node('lastBuildDate', $log->getRssDate()));
$channel->appendChild(new Node('generator', Config::GENERATOR));
$channel->appendChild(new Node('language', 'ja'));
$channel->appendChild(new Node('docs', 'http://blogs.law.harvard.edu/tech/rss'));
$image = new Node('image');
$image->appendChild(new Node('url', Config::IMAGE_DIR_URL . Config::RSS_IMAGE));
$image->appendChild(new Node('title', Config::TITLE));
$image->appendChild(new Node('link', Config::URL));
$channel->appendChild($image);
foreach($log->entries() as $entry){
  $channel->appendChild($entry->asnode());
}
$rss->appendChild($channel);
header('Content-Type: application/rss+xml; charset=utf-8');
echo '<?xml version="1.0" encoding="utf-8"?>' . "\n";
echo $rss->asXml();
?>