mime.php

PHP 建站工具,CMS系统,类似与oscommerce

<?php
/* --------------------------------------------------------------
   $Id: mime.php,v 1.1 2003/09/06 22:05:29 oldpa   Exp $   

   TWE-Commerce - community made shopping
   http://www.oldpa.com.twCopyright (c) 2003 TWE-Commerce
   --------------------------------------------------------------
   based on: 
   (c) 2000-2001 The Exchange Project  (earlier name of osCommerce)
   (c) 2002-2003 osCommerce(mime.php,v 1.3 2002/01/31); www.oscommerce.com 
   (c) 2003	 nextcommerce (mime.php,v 1.4 2003/08/14); www.nextcommerce.org

   Released under the GNU General Public License 
   
   mime.php - a class to assist in building mime-HTML eMails
  
   The original class was made by Richard Heyes <[e-mail]>
   and can be found here: http://www.phpguru.org

   Renamed and Modified by Jan Wildeboer for osCommerce
   --------------------------------------------------------------*/

  class mime{
    var $_encoding;
    var $_subparts;
    var $_encoded;
    var $_headers;
    var $_body;

    /**
     * Constructor.
     * 
     * Sets up the object.
     *
     * @param $body   - The body of the mime part if any.
     * @param $params - An associative array of parameters:
     *                  content_type - The content type for this part eg multipart/mixed
     *                  encoding     - The encoding to use, 7bit, base64, or quoted-printable
     *                  cid          - Content ID to apply
     *                  disposition  - Content disposition, inline or attachment
     *                  dfilename    - Optional filename parameter for content disposition
     *                  description  - Content description
     * @access public
     */
    function mime($body, $params = array()) {
      if (EMAIL_LINEFEED == 'CRLF') {
        $this->lf = "\r\n";
      } else {
        $this->lf = "\n";
      }
      foreach ($params as $key => $value) {
        switch ($key) {
          case 'content_type':
            $headers['Content-Type'] = $value . (isset($charset) ? '; charset="' . $charset . '"' : '');
            break;
          case 'encoding':
            $this->_encoding = $value;
            $headers['Content-Transfer-Encoding'] = $value;
            break;
          case 'cid':
            $headers['Content-ID'] = '<' . $value . '>';
            break;
          case 'disposition':
            $headers['Content-Disposition'] = $value . (isset($dfilename) ? '; filename="' . $dfilename . '"' : '');
            break;
          case 'dfilename':
            if (isset($headers['Content-Disposition'])) {
              $headers['Content-Disposition'] .= '; filename="' . $value . '"';
            } else {
              $dfilename = $value;
            }
            break;
          case 'description':
            $headers['Content-Description'] = $value;
            break;
          case 'charset':
            if (isset($headers['Content-Type'])) {
              $headers['Content-Type'] .= '; charset="' . $value . '"';
            } else {
              $charset = $value;
            }
            break;
        }
      }

      // Default content-type
      if (!isset($_headers['Content-Type'])) {
        $_headers['Content-Type'] = 'text/plain';
      }

      // Assign stuff to member variables
      $this->_encoded  =  array();
      $this->_headers  =& $headers;
      $this->_body     =  $body;
    }

    /**
     * encode()
     * 
     * Encodes and returns the email. Also stores
     * it in the encoded member variable
     *
     * @return An associative array containing two elements,
     *         body and headers. The headers element is itself
     *         an indexed array.
     * @access public
     */
    function encode() {
      $encoded =& $this->_encoded;

      if (!empty($this->_subparts)) {
        srand((double)microtime()*1000000);
        $boundary = '=_' . md5(uniqid(rand()) . microtime());
        $this->_headers['Content-Type'] .= ';' . $this->lf . chr(9) . 'boundary="' . $boundary . '"';

        // Add body parts to $subparts
        for ($i = 0; $i < count($this->_subparts); $i++) {
          $headers = array();
          $tmp = $this->_subparts[$i]->encode();
          foreach ($tmp['headers'] as $key => $value) {
            $headers[] = $key . ': ' . $value;
          }
          $subparts[] = implode($this->lf, $headers) . $this->lf . $this->lf . $tmp['body'];
        }

        $encoded['body'] = '--' . $boundary . $this->lf . implode('--' . $boundary . $this->lf, $subparts) . '--' . $boundary.'--' . $this->lf;
      } else {
        $encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding) . $this->lf;
      }

      // Add headers to $encoded
      $encoded['headers'] =& $this->_headers;

      return $encoded;
    }

    /**
     * &addSubPart()
     * 
     * Adds a subpart to current mime part and returns
     * a reference to it
     *
     * @param $body   The body of the subpart, if any.
     * @param $params The parameters for the subpart, same
     *                as the $params argument for constructor.
     * @return A reference to the part you just added. It is
     *         crucial if using multipart/* in your subparts that
     *         you use =& in your script when calling this function,
     *         otherwise you will not be able to add further subparts.
     * @access public
     */
    function &addSubPart($body, $params) {
      $this->_subparts[] = new mime($body, $params);
      return $this->_subparts[count($this->_subparts) - 1];
    }

    /**
     * _getEncodedData()
     * 
     * Returns encoded data based upon encoding passed to it
     *
     * @param $data     The data to encode.
     * @param $encoding The encoding type to use, 7bit, base64,
     *                  or quoted-printable.
     * @access private
     */
    function _getEncodedData($data, $encoding) {
      switch ($encoding) {
        case '7bit':
          return $data;
          break;

        case 'quoted-printable':
          return $this->_quotedPrintableEncode($data);
          break;

        case 'base64':
          return rtrim(chunk_split(base64_encode($data), 76, $this->lf));
          break;
      }
    }

    /**
     * quoteadPrintableEncode()
     * 
     * Encodes data to quoted-printable standard.
     *
     * @param $input    The data to encode
     * @param $line_max Optional max line length. Should 
     *                  not be more than 76 chars
     *
     * @access private
     */
    function _quotedPrintableEncode($input , $line_max = 76) {
      $lines    = preg_split("/\r\n|\r|\n/", $input);
      $eol    = $this->lf;
      $escape    = '=';
      $output    = '';
        
      while(list(, $line) = each($lines)){
        $linlen     = strlen($line);
        $newline = '';

        for ($i = 0; $i < $linlen; $i++) {
          $char = substr($line, $i, 1);
          $dec  = ord($char);
          if (($dec == 32) AND ($i == ($linlen - 1))){    // convert space at eol only
            $char = '=20';
          } elseif($dec == 9) {
            // Do nothing if a tab.
          } elseif(($dec == 61) OR ($dec < 32 ) OR ($dec > 126)) {
            $char = $escape . strtoupper(sprintf('%02s', dechex($dec)));
          }
    
          if ((strlen($newline) + strlen($char)) >= $line_max) {        // $this->lf is not counted
            $output  .= $newline . $escape . $eol;                    // soft line break; " =\r\n" is okay
            $newline  = '';
          }
          $newline .= $char;
        } // end of for
        $output .= $newline . $eol;
      }
      $output = substr($output, 0, -1 * strlen($eol)); // Don't want last crlf
      return $output;
    }
  } // End of class
?>