Added (resurrect) Amazon.com settings. Cleanup. Rename defines.

[pukiwiki/pukiwiki.git] / plugin / amazon.inc.php

<?php
// PukiWiki - Yet another WikiWikiWeb clone.
// $Id: amazon.inc.php,v 1.6 2004/12/25 02:12:05 henoheno Exp $
// Id: amazon.inc.php,v 1.1 2003/07/24 13:00:00 ´×¼Ë
//
// Amazon plugin: Book-review maker via amazon.com/amazon.jp
//
// Copyright:
//      2004 PukiWiki Developer Team
//      2003 ´×¼Ë <raku@rakunet.org> (Original author)
//
// Thanks: To reimy and PukiWiki Developers Team.
//
// ChangeLog:
// * 2004/04/03 PukiWiki Developer Team (arino <arino@users.sourceforge.jp>)
//        - replace plugin_amazon_get_page().
//        - PLUGIN_AMAZON_XML 'xml.amazon.com' -> 'xml.amazon.co.jp'
// * 0.6  URL ¤¬Â¸ºß¤·¤Ê¤¤¾ì¹ç¡¢No image ¤òɽ¼¨¡¢²èÁüÇÛÃ֤ʤɽ¤Àµ¡£
//        ¥¤¥ó¥é¥¤¥ó¥×¥é¥°¥¤¥ó¤Î¸Æ¤Ó½Ð¤·Êý¤ò½¤Àµ¡£
//        ASIN ÈÖ¹æÉôʬ¤ò¥Á¥§¥Ã¥¯¤¹¤ë¡£
//        ²èÁü¡¢¥¿¥¤¥È¥ë¤Î¥­¥ã¥Ã¥·¥å¤Ë¤è¤ë®ÅÙ¤ÎÂçÉý¥¢¥Ã¥×¡£
// * 0.7  ¥Ö¥Ã¥¯¥ì¥Ó¥å¡¼À¸À®¤Î¥Ç¥Ð¥Ã¥°¡¢Ç§¾ÚÌäÂê¤Î°ì±þ¤Î¥¯¥ê¥¢¡£
// * 0.8  amazon Á´¾¦ÉʤβèÁü¤òɽ¼¨¡£
//        ¥¢¥½¥·¥¨¥¤¥È ID ¤ËÂбþ¡£
// * 0.9  RedHat9+php4.3.2+apache2.0.46 ¤Ç²èÁü¤¬ÅÓÃæ¤Þ¤Ç¤·¤«Æɤ߹þ¤Þ¤ì¤Ê¤¤ÌäÂê¤ËÂн衣
//        ÆüËܸì¥Ú¡¼¥¸¤Î²¼¤Ë¥Ö¥Ã¥¯¥ì¥Ó¥å¡¼¤òºî¤í¤¦¤È¤¹¤ë¤Èʸ»ú²½¤±¤·¤Æºî¤ì¤Ê¤¤ÌäÂê¤Î²ò·è¡£
//        ½ñÀҤǤʤ¯ CD ¤Ê¤É¡¢ASIN Éôʬ¤¬Ä¹¤¯¤Æ¤â¥¿¥¤¥È¥ë¤ò¤¦¤Þ¤¯½¦¤¦¤è¤¦¤Ë¤¹¤ë¡£
//        ¼Ì±Æ¤Î¤ß¼è¤ê¹þ¤à¤Î¤Ç¤Ê¤±¤ì¤Ð¡¢B000002G6J.01 ¤È½ñ¤«¤º B000002G6J ¤È½ñ¤¤¤Æ¤â¼Ì±Æ¤¬½Ð¤ë¤è¤¦¤Ë¤¹¤ë¡£
//        ASIN ¤ËÂбþ¤¹¤ë¥­¥ã¥Ã¥·¥å²èÁü/¥­¥ã¥Ã¥·¥å¥¿¥¤¥È¥ë¤ò¤½¤ì¤¾¤ìºï½ü¤¹¤ëµ¡Ç½Äɲá£
//        proxy Âбþ(»î¸³Åª)¡£
//        proxy ¼ÂÁõ¤Î²áÄø¤Ç°ìÈ̥桼¥¶¤Î¤¿¤á¤Î AID ¤Ï¤Ê¤¯¤È¤â¼«Æ°À¸À®¤µ¤ì¤ë¤³¤È¤¬¤ï¤«¤ê¡¢ºï½ü¤·¤¿¡£
// * 1.0  ¥Ö¥Ã¥¯¥ì¥Ó¥å¡¼¤Ç¤Ê¤¯¡¢¥ì¥Ó¥å¡¼¤È¤¹¤ë¡£
//        ²èÁü¤Î¥­¥ã¥Ã¥·¥å¤òºï½ü¤¹¤ë´ü¸Â¤òÀߤ±¤ë¡£
//        ¥¿¥¤¥È¥ë¡¢¼Ì±Æ¤ò Web Services ¤Î XML ¥¢¥¯¥»¥¹¤ÎÊýË¡¤Ë¤è¤Ã¤Æ get ¤¹¤ë¤³¤È¤Ç»þ´Ö¤òû½Ì¤¹¤ë¡£
//        ¥ì¥Ó¥å¡¼¥Ú¡¼¥¸À¸À®¤Î¥¿¥¤¥ß¥ó¥°¤Ë¤Ä¤¤¤ÆÃí¤òÆþ¤ì¤ë¡£
// * 1.1  ÊÔ½¸À©¸Â¤ò¤«¤±¤Æ¤¤¤ë¾ì¹ç¡¢Éô³°¼Ô¤¬¥ì¥Ó¥å¡¼¤òºî¤í¤¦¤È¤·¤Æ¡¢¥Ú¡¼¥¸¤Ï¤Ç¤­¤Ê¤¤¤¬ ASIN4774110655.tit ¤Ê¤É¤Î¥­¥ã¥Ã¥·¥å¤¬¤Ç¤­¤ë¤Î¤ò²ò·è¡£
//        ²èÁü¤ÎºÇ¸å¤¬ 01 ¤Î¾ì¹ç¡¢image ¤òºï½ü¤¹¤ë¤È noimage.jpg ¤È¤Ê¤Ã¤Æ¤·¤Þ¤¦¥Ð¥°¤ò½¤Àµ¡£
//        1.0 ¤ÇƳÆþ¤·¤¿ XML ¥¢¥¯¥»¥¹¤Ï¹â®¤À¤¬¡¢ÊÖ¤¹²èÁü¾ðÊ󤬥¦¥½¤Ê¤Î¤Ç¡¢09 ¤¬¤À¤á¤Ê¤é 01 ¤ò¥È¥é¥¤¤¹¤ë¡¢¤Ç»ÃÄêŪ¤Ë²ò·è¡£
//
// License: GNU/GPL
//
// Caution!:
// * Ãøºî¸¢¤¬´ØÏ¢¤¹¤ë°Ù¡¢www.amazon.co.jp ¤Î¥¢¥½¥·¥¨¥¤¥È¥×¥í¥°¥é¥à¤ò³Îǧ¤Î¾å¤´ÍøÍѲ¼¤µ¤¤¡£
// * ¥ì¥Ó¥å¡¼¤Ï¡¢amazon ¥×¥é¥°¥¤¥ó¤¬¸Æ¤Ó½Ð¤¹ÊÔ½¸²èÌ̤Ϥ⤦½ÐÍè¤Æ PukiWiki ¤ËÅÐÏ¿¤µ¤ì¤Æ¤¤¤ë¤Î¤Ç¡¢
//   Ãæ»ß¤¹¤ë¤Ê¤éÁ´Ê¸¤òºï½ü¤·¤Æ¥Ú¡¼¥¸¤Î¹¹¿·¥Ü¥¿¥ó¤ò²¡¤¹¤³¤È¡£
// * ²¼¤Î PLUGIN_AMAZON_AID¡¢PROXY ¥µ¡¼¥Ð¤ÎÉôʬ¡¢expire ¤ÎÉôʬ¤òŬÅö¤ËÊÔ½¸¤·¤Æ»ÈÍѤ·¤Æ¤¯¤À¤µ¤¤(¾¤Ï¤½¤Î¤Þ¤Þ¤Ç¤â Ok)¡£
//

/////////////////////////////////////////////////
// Settings

// Amazon associate ID
//define('PLUGIN_AMAZON_AID',''); // None
define('PLUGIN_AMAZON_AID','');

// Expire caches per ? days
define('PLUGIN_AMAZON_EXPIRE_IMAGECACHE',   1);
define('PLUGIN_AMAZON_EXPIRE_TITLECACHE', 356);

// Alternative image for 'Image not found'
define('PLUGIN_AMAZON_NO_IMAGE', './image/noimage.jpg');

// URI prefixes
switch(LANG){
case 'ja':
        // Amazon shop
        define('PLUGIN_AMAZON_SHOP_URI', 'http://www.amazon.co.jp/exec/obidos/ASIN/');

        // Amazon information inquiry (dev-t = default value in the manual)
        define('PLUGIN_AMAZON_XML', 'http://xml.amazon.co.jp/onca/xml3?t=webservices-20&' .
                'dev-t=GTYDRES564THU&type=lite&page=1&f=xml&locale=jp&AsinSearch=');
        break;
default:
        // Amazon shop
        define('PLUGIN_AMAZON_SHOP_URI', 'http://www.amazon.com/exec/obidos/ASIN/');

        // Amazon information inquiry (dev-t = default value in the manual)
        define('PLUGIN_AMAZON_XML', 'http://xml.amazon.com/onca/xml3?t=webservices-20&' .
                'dev-t=GTYDRES564THU&type=lite&page=1&f=xml&locale=us&AsinSearch=');
        break;
}

/////////////////////////////////////////////////

function plugin_amazon_init()
{
  global $amazon_aid, $amazon_body;

  if (PLUGIN_AMAZON_AID == '') {
    $amazon_aid = '';
  } else {
    $amazon_aid = PLUGIN_AMAZON_AID . '/';
  }
  $amazon_body = <<<EOD
-ºî¼Ô: [[¤³¤³ÊÔ½¸¤Î¤³¤È]]
-ɾ¼Ô: ¤ªÌ¾Á°
-ÆüÉÕ: &date;
**¤ªÁ¦¤áÂоÝ
[[¤³¤³ÊÔ½¸¤Î¤³¤È]]

#amazon(,clear)
**´¶ÁÛ
[[¤³¤³ÊÔ½¸¤Î¤³¤È]]

// ¤Þ¤º¡¢¤³¤Î¥ì¥Ó¥å¡¼¤ò»ß¤á¤ë¾ì¹ç¡¢Á´Ê¸¤òºï½ü¤·¡¢¥Ú¡¼¥¸¤Î[¹¹¿·¥Ü¥¿¥ó]¤ò²¡¤·¤Æ¤¯¤À¤µ¤¤¡ª(PukiWiki ¤Ë¤Ï¤â¤¦ÅÐÏ¿¤µ¤ì¤Æ¤¤¤Þ¤¹)
// ³¤±¤ë¤Ê¤é¡¢¾å¤Î¡¢[[¤³¤³ÊÔ½¸¤Î¤³¤È]]Éôʬ¤ò³ç¸Ì¤ò´Þ¤á¤Æºï½ü¤·¡¢½ñ¤­Ä¾¤·¤Æ¤¯¤À¤µ¤¤¡£
// ¤ªÌ¾Á°¡¢Éôʬ¤Ï¤´¼«Ê¬¤Î̾Á°¤ËÊѹ¹¤·¤Æ¤¯¤À¤µ¤¤¡£»ä¤À¤È¡¢´×¼Ë¡¢¤Ç¤¹¡£
// **¤ªÁ¦¤áÂоݡ¢¤è¤ê¾å¤Ï¡¢¿·¤·¤¤¹Ô¤òÄɲ䷤ʤ¤¤Ç¤¯¤À¤µ¤¤¡£Ìܼ¡ºîÀ®¤Ë»ÈÍѤ¹¤ë¤Î¤Ç¡£
// //¤Ç»Ï¤Þ¤ë¥³¥á¥ó¥È¹Ô¤Ï¡¢ºÇ½ªÅª¤ËÁ´Éô¥«¥Ã¥È¤·¤Æ¤¯¤À¤µ¤¤¡£Ìܼ¡¤¬Àµ¾ï¤ËºîÀ®¤Ç¤­¤Ê¤¤²ÄǽÀ­¤¬¤¢¤ê¤Þ¤¹¡£
#comment
EOD;
}

function plugin_amazon_convert()
{
  global $script, $vars, $asin, $asin_all;

  if (func_num_args() == 0) { // ¥ì¥Ó¥å¡¼ºîÀ®
    $s_page = htmlspecialchars($vars['page']);
    if ($s_page == '') {
      $s_page = $vars['refer'];
    }
    $ret = <<<EOD
<form action="$script" method="post">
 <div>
  <input type="hidden" name="plugin" value="amazon" />
  <input type="hidden" name="refer" value="$s_page" />
  ASIN:
  <input type="text" name="asin" size="30" value="" />
  <input type="submit" value="¥ì¥Ó¥å¡¼ÊÔ½¸" /> (ISBN 10 ·å or ASIN 12 ·å)
 </div>
</form>
EOD;
    return $ret;
  } elseif (func_num_args() < 1 || func_num_args() > 3) {
    return false;
  }
  $aryargs = func_get_args();

  $align = strtolower($aryargs[1]);
  if ($align == 'clear') return '<div style="clear:both"></div>'; // ²þ¹ÔÁÞÆþ
  if ($align != 'left') $align = 'right'; // ÇÛÃÖ·èÄê

  $asin_all = htmlspecialchars($aryargs[0]);  // for XSS
  if (is_asin() == false && $align != 'clear') return false;

  if ($aryargs[2] != '') { // ¥¿¥¤¥È¥ë»ØÄ꤫¼«Æ°¼èÆÀ¤«
    $title = $alt = htmlspecialchars($aryargs[2]); // for XSS
    if ($alt == 'image') {
      $alt = plugin_amazon_get_asin_title();
      if ($alt == '') return false;
      $title = '';
    } elseif ($alt == 'delimage') {
      if (unlink(CACHE_DIR . 'ASIN' . $asin . '.jpg')) {
        return 'Image of ' . $asin . ' deleted...';
      } else {
        return 'Image of ' . $asin . ' NOT DELETED...';
      }
    } elseif ($alt == 'deltitle') {
      if (unlink(CACHE_DIR . 'ASIN' . $asin . '.tit')) {
        return 'Title of ' . $asin . ' deleted...';
      } else {
        return 'Title of ' . $asin . ' NOT DELETED...';
      }
    } elseif ($alt == 'delete') {
      if ((unlink(CACHE_DIR . 'ASIN' . $asin . '.jpg') && unlink(CACHE_DIR . 'ASIN' . $asin . '.tit'))) {
        return 'Title and Image of ' . $asin . ' deleted...';
      } else {
        return 'Title and Image of ' . $asin . ' NOT DELETED...';
      }
    }
  } else {
    $alt = $title = plugin_amazon_get_asin_title(); // ¥¿¥¤¥È¥ë¼«Æ°¼èÆÀ
    if ($alt == '') return false;
  }

  return plugin_amazon_print_object($align, $alt, $title);
}

function plugin_amazon_action()
{
  global $vars, $script, $edit_auth, $edit_auth_users;
  global $amazon_body, $asin, $asin_all;

  $asin_all = htmlspecialchars(rawurlencode(strip_bracket($vars['asin'])));

  if (! is_asin()) {
    $retvars['msg']   = '¥Ö¥Ã¥¯¥ì¥Ó¥å¡¼ÊÔ½¸';
    $retvars['refer'] = $vars['refer'];
    $retvars['body']  = plugin_amazon_convert();
    return $retvars;

  } else {
    $s_page     = $vars['refer'];
    $r_page     = $s_page . '/' . $asin;
    $r_page_url = rawurlencode($r_page);

    pkwk_headers_sent();
    if ($edit_auth && (! isset($_SERVER['PHP_AUTH_USER']) ||
        ! array_key_exists($_SERVER['PHP_AUTH_USER'], $edit_auth_users) ||
        $edit_auth_users[$_SERVER['PHP_AUTH_USER']] != $_SERVER['PHP_AUTH_PW'])) {
      header('Location: ' . get_script_uri() . '?cmd=read&page=' . $r_page_url);
    } else {
      $title = plugin_amazon_get_asin_title();
      if ($title == '' || preg_match('/^\//', $s_page)) {
        header('Location: ' . get_script_uri() . '?cmd=read&page=' . encode($s_page));
      }
      $body = '#amazon(' . $asin_all . ',,image)' . "\n" . '*' . $title . "\n" . $amazon_body;
      plugin_amazon_review_save($r_page, $body);
      header('Location: ' . get_script_uri() . '?cmd=edit&page=' . $r_page_url);
    }
    exit;
  }
}

function plugin_amazon_inline()
{
  global $amazon_aid;
  global $asin, $asin_ext, $asin_all;

  list($asin_all) = func_get_args();

  $asin_all = htmlspecialchars($asin_all); // for XSS
  if (! is_asin()) return false;

  $title = plugin_amazon_get_asin_title();
  if ($title == '')
    return false;
  else
    return '<a href="' . PLUGIN_AMAZON_SHOP_URI . "$asin/$amazon_aid" . 'ref=nosim">' . "$title</a>\n";
}

function plugin_amazon_print_object($align, $alt, $title)
{
  global $amazon_aid;
  global $asin, $asin_ext, $asin_all;

  $url = plugin_amazon_cache_image_fetch(CACHE_DIR);

  if ($title == '') { // ¥¿¥¤¥È¥ë¤¬¤Ê¤±¤ì¤Ð¡¢²èÁü¤Î¤ßɽ¼¨
    $div = '<div style="float:' . $align . ';margin:16px 16px 16px 16px;text-align:center">' . "\n";
    $div .= ' <a href="' . PLUGIN_AMAZON_SHOP_URI . $asin . '/' . $amazon_aid . 'ref=nosim">' .
        '<img src="' . $url . '" alt="' . $alt . '" /></a>' . "\n";
    $div .= '</div>' . "\n";
  } else {            // Ä̾ïɽ¼¨
    $div = '<div style="float:' . $align . ';padding:.5em 1.5em .5em 1.5em;text-align:center">' . "\n";
    $div .= ' <table style="width:110px;border:0;text-align:center"><tr><td style="text-align:center">' . "\n";
    $div .= '  <a href="' . PLUGIN_AMAZON_SHOP_URI . $asin . '/' . $amazon_aid . 'ref=nosim">' .
        '<img src="' . $url . '" alt="' . $alt  .'" /></a></td></tr>' . "\n";
    $div .= '  <tr><td style="text-align:center"><a href="' .
        PLUGIN_AMAZON_SHOP_URI . $asin . '/' . $amazon_aid . 'ref=nosim">' . $title . '</a></td>' . "\n";
    $div .= ' </tr></table>' . "\n" . '</div>' . "\n";
  }
  return $div;
}

function plugin_amazon_get_asin_title()
{
  global $asin, $asin_ext, $asin_all;

  if ($asin_all == '') return '';

  $nocache = $nocachable = 0;

  $url = PLUGIN_AMAZON_XML . $asin;

  if (file_exists(CACHE_DIR) === false || is_writable(CACHE_DIR) === false) $nocachable = 1; // ¥­¥ã¥Ã¥·¥åÉԲĤξì¹ç

  if (($title = plugin_amazon_cache_title_fetch(CACHE_DIR)) == false) {
    $nocache = 1; // ¥­¥ã¥Ã¥·¥å¸«¤Ä¤«¤é¤º
    $body = plugin_amazon_get_page($url); // ¤·¤«¤¿¤Ê¤¤¤Î¤Ç¼è¤ê¤Ë¤¤¤¯
    $tmpary = array();
    $body = mb_convert_encoding($body, SOURCE_ENCODING, 'UTF-8');
    preg_match('/<ProductName>([^<]*)</', $body, $tmpary);
    $title = trim($tmpary[1]);
//    $tmpary[1] = '';
//    preg_match("/<ImageUrlMedium>http:\/\/images-jp.amazon.com\/images\/P\/[^.]+\.(..)\./", $body, $tmpary);
//    if ($tmpary[1] != '') {
//      $asin_ext = $tmpary[1];
//      $asin_all = $asin . $asin_ext;
//    }
  }

  if ($title == '') return '';

  if ($nocache == 1 && $nocachable != 1) plugin_amazon_cache_title_save($title, CACHE_DIR); // ¥¿¥¤¥È¥ë¤¬¤¢¤ì¤Ð¥­¥ã¥Ã¥·¥å¤ËÊݸ
  return $title;
}

// ¥¿¥¤¥È¥ë¥­¥ã¥Ã¥·¥å¤¬¤¢¤ë¤«Ä´¤Ù¤ë
function plugin_amazon_cache_title_fetch($dir)
{
  global $asin, $asin_ext, $asin_all;

  $filename = $dir . 'ASIN' . $asin . '.tit';

  $get_tit = 0;
  if (!is_readable($filename)) {
    $get_tit = 1;
  } elseif (PLUGIN_AMAZON_EXPIRE_TITLECACHE * 3600 * 24 < time() - filemtime($filename)) {
    $get_tit = 1;
  }

  if ($get_tit) return false;

  if (!($fp = @fopen($filename, 'r'))) return false;
  $title = fgets($fp, 4096);
//  $tmp_ext = fgets($fp, 4096);
//  if ($tmp_ext != '') {
//    $asin_ext = $tmp_ext;
//  }
  fclose($fp);

  if (strlen($title) > 0)
    return $title;
  else
    return false;
}

// ²èÁü¥­¥ã¥Ã¥·¥å¤¬¤¢¤ë¤«Ä´¤Ù¤ë
function plugin_amazon_cache_image_fetch($dir)
{
  global $asin, $asin_ext, $asin_all;

  $filename = $dir . 'ASIN' . $asin . '.jpg';

  $get_img = 0;
  if (!is_readable($filename)) {
    $get_img = 1;
  } elseif (PLUGIN_AMAZON_EXPIRE_IMAGECACHE * 3600 * 24 < time() - filemtime($filename)) {
    $get_img = 1;
  }

  if ($get_img) {
    $url = 'http://images-jp.amazon.com/images/P/' . $asin . '.' . $asin_ext . '.MZZZZZZZ.jpg';

    if (!is_url($url)) return false; // URL ·Á¼°¥Á¥§¥Ã¥¯
    $body = plugin_amazon_get_page($url);
    if ($body != '') {
      $tmpfile = $dir . 'ASIN' . $asin . '.jpg.0';
      $fp = fopen($tmpfile, 'wb');
      fwrite($fp, $body);
      fclose($fp);
      $size = getimagesize($tmpfile);
      unlink($tmpfile);
    }
    if ($body == '' || $size[1] <= 1) { // Ä̾ï¤Ï1¤¬Ê֤뤬ǰ¤Î¤¿¤á0¤Î¾ì¹ç¤â(reimy)
      // ¥­¥ã¥Ã¥·¥å¤ò PLUGIN_AMAZON_NO_IMAGE ¤Î¥³¥Ô¡¼¤È¤¹¤ë
      if ($asin_ext == '09') {
        $url = 'http://images-jp.amazon.com/images/P/' . $asin . '.01.MZZZZZZZ.jpg';
        $body = plugin_amazon_get_page($url);
        if ($body != '') {
          $tmpfile = $dir . 'ASIN' . $asin . '.jpg.0';
          $fp = fopen($tmpfile, 'wb');
          fwrite($fp, $body);
          fclose($fp);
          $size = getimagesize($tmpfile);
          unlink($tmpfile);
        }
      }
      if ($body == '' || $size[1] <= 1) {
        $fp = fopen(PLUGIN_AMAZON_NO_IMAGE, 'rb');
        if (! $fp) return false;
        $body = '';
        while (!feof($fp)) {
          $body .= fread($fp, 4096);
        }
        fclose ($fp);
      }
    }
    plugin_amazon_cache_image_save($body, CACHE_DIR);
  }
  return $filename;
}

// ¥¿¥¤¥È¥ë¥­¥ã¥Ã¥·¥å¤òÊݸ
function plugin_amazon_cache_title_save($data, $dir)
{
  global $asin, $asin_ext, $asin_all;

  $filename = $dir . 'ASIN' . $asin . '.tit';

  $fp = fopen($filename, 'w');
  fwrite($fp, "$data");
  fclose($fp);

  return $filename;
}

// ²èÁü¥­¥ã¥Ã¥·¥å¤òÊݸ
function plugin_amazon_cache_image_save($data, $dir)
{
  global $asin, $asin_ext, $asin_all;

  $filename = $dir . 'ASIN' . $asin . '.jpg';

  $fp = fopen($filename, 'wb');
  fwrite($fp, $data);
  fclose($fp);

  return $filename;
}

// ½ñÀҥǡ¼¥¿¤òÊݸ
function plugin_amazon_review_save($page, $data)
{
  global $asin, $asin_ext, $asin_all;

  $filename = DATA_DIR . encode($page) . '.txt';

  if (! is_readable($filename)) {
    $fp = fopen($filename, 'w');
    fwrite($fp, $data);
    fclose($fp);
    return true;
  }
  return false;
}

// ¥Í¥Ã¥È¾å¤Î URL ¤Î¥Ç¡¼¥¿¤ò¼è¤Ã¤Æ¤­¤ÆÊÖ¤¹(¤Ê¤±¤ì¤Ð¶õ¥Ç¡¼¥¿)
function plugin_amazon_get_page($url)
{
        $data = http_request($url);

        return ($data['rc'] == 200) ? $data['data'] : '';
}

// ASIN¤«¡©
function is_asin()
{
  global $asin, $asin_ext, $asin_all;

  $tmpary = array();
  if (preg_match('/^([A-Z0-9]{10}).?([0-9][0-9])?$/', $asin_all, $tmpary) == false) {
    return false;
  } else {
    $asin = $tmpary[1];
    $asin_ext = $tmpary[2];
    if ($asin_ext == '') {
      $asin_ext = '09';
    }
    $asin_all = $asin . $asin_ext;
    return true;
  }
}

?>