File: PTagParser.inc

<?
/**
*  PTagParser Class
*
*  @author Masahiro.Kobayashi < masa918@mb.infoweb.ne.jp >
*  @version 0.1
*
*/
class PTagParser
{
  /**
  *  array to manage tag prefix
  *  @var array
  */ 
  var $tagPrefix = array();
  /**
  *  array to manage instance name
  *  @var array
  *  <form:select ..../>  =>  $instances['form']['select'] = $_form_select;
  */
  var $instances = array();
  /**
  *  array to manage class name
  *  @var array
  */
  var $classes = array();
  /**
  *   @access private
  */
  var $tagStack = array();
  /**
  *  body content
  */
  var $bodyContent = "";
  /**
  *
  *  tmp dir
  */
  var $tmpDir = "/tmp";
  /**
  *
  *  set tag library infomation
  *
  *  @access public
  *  @param  $prefix string
  *  @param  $tag string
  *  @param  $className string
  */
  function setTaglib($prefix,$tag,$className)
  {
    if(!in_array($prefix,$this->tagPrefix)){
      $this->tagPrefix[] = $prefix;
    }
    //  set to variable name 
    $var_name = $this->makeVarName($prefix,$tag);
    $this->instances[$prefix][$tag] = $var_name;
    $this->classes[$var_name] = $className;
  }
  /**
  *
  *  create taglib instance variable name
  *
  *  @param $prefix string 
  *  @param $tag    string
  *  @return string
  *  @access private
  */
  function makeVarName($prefix,$tag)
  {
    return '$_taglib_'.$prefix.'_'.$tag;
  }
  /**
  *
  *  create xml parser
  *
  *  @access private
  */
  function makeParser($encode = "UTF-8")
  {
    $parser = xml_parser_create($encode);
    xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);
    xml_set_object($parser,$this);
    xml_set_element_handler($parser,"_open_element","_close_element");
    xml_set_character_data_handler($parser,"_cdata");
    xml_set_default_handler($parser,"_default");
    //xml_set_processing_instruction_handler($parser,"_exec");
    
    return $parser;
  }
  /**
  *
  *  parse xml file
  *  @access public
  */
  function parse($input,$output = null)
  {
    ob_start();
    //
    //  create instance
    //
    $this->out("<?php\n");
    foreach($this->tagPrefix as $prefix){
      $tags = $this->instances[$prefix];
      foreach($tags as $tag => $var_name){
        $this->out("$var_name = new ".$this->classes[$var_name]."();\n");
      }
    }
    $this->out("?>\n");
    
    //
    //  start parse
    //
    $parser = $this->makeParser();
    $fp = fopen($input,"r");
    while($line = fgets($fp,1024)){
      $line =& $this->input($line);
      $line =& str_replace("&","&amp;",$line);
      if(!xml_parse($parser,$line,feof($fp))){
        ob_end_clean();
        die(htmlspecialchars($line));
      }
    }
    $content = ob_get_contents();
    ob_end_clean();
    
    $fout = fopen($output,"w");
    fputs($fout,$content);
    fclose($fout);
    fclose($fp);
    xml_parser_free($parser);
    
    include_once($output);
  }
  /**
  *
  *  open tag
  *  @access private
  */
  function _open_element($parser,$name,$attrs)
  {
    $this->out($this->bodyContent);
    $this->bodyContent = "";
    $pos = strpos($name,":");
    if($pos !== false){
      $prefix = substr($name,0,$pos);
      $tag    = substr($name,$pos+1);
      $varname = $this->makeVarName($prefix,$tag);
      
      if(isset($this->classes[$varname])){
        
        
        if(is_array($this->tagStack[$prefix])){
          $curTag = current($this->tagStack[$prefix]);
        }
        //
        //  add stack
        //
        $this->tagStack[$prefix][] = $tag;
        
        $this->out("<?php\n");
        //
        //  set parent
        //
        if($curTag != ""){
          $this->out($varname."->setParent(".$this->makeVarName($prefix,$curTag).");\n");
        }
        foreach($attrs as $key => $value){
          $this->out($varname."->set(\"$key\",\"$value\");\n");
        }
        $this->out($varname."->doStartTag();\n");
        
      $this->out("?>");
      }
    }
    else{
      $this->out("<?php\n");
      $this->out("print(\"<".$name."\");\n");
      foreach($attrs as $key => $val ){
        $this->out('print(" '.$key.'=\"'.$val.'\"'."\");\n");
      }
      $this->out("print \">\";");
      $this->out("\n?>\n");
    }
  }
  /**
  *
  *  close tag
  *
  *  @access private
  *  @see makeParser()
  */
  function _close_element($parser,$name)
  {
    $pos = strpos($name,":");
    if($pos !== false){
      $prefix = substr($name,0,$pos);
      $tag    = substr($name,$pos+1);
      $varname = $this->makeVarName($prefix,$tag);
      
      if(isset($this->classes[$varname])){
        //
        //  pop stack
        //
        if(is_array($this->tagStack[$prefix])){
          $curtag = array_pop($this->tagStack[$prefix]);
        }
        $this->out("<?php\n");
        $body = trim($this->bodyContent);
        $this->out($varname."->doBody(\"".$body."\");\n");
        $this->bodyContent = "";
        $this->out($varname."->doEndTag();\n");
        $this->out($varname."->release();\n");
        
      $this->out("?>");
      }
    }
    else{
      $this->out($this->bodyContent);
      $this->bodyContent = "";
      $name = strtolower($name);
      switch($name){
        case "br":
        case "hr":
        case "input":
          break;
        default:
          $this->out("</$name>");
      }
    }
  }
  /**
  *
  *  cdata section
  *
  * @access private
  * @see makeParser
  */
  function _cdata($parser,$data)
  {
    $this->bodyContent .= $this->output($data);
  }
  /**
  *  default section
  *
  *  @access private
  *  @see makeParser
  */
  function _default($parser,$data)
  {
    $data = str_replace("&amp;","&",$data);
    $this->out($this->output($data));
  }
  /**
  *  output handler
  *
  *  @access private
  */
  function out($str)
  {
    print $str;
  }
  /**
  *  file input filter
  */
  function input(&$str)
  {
    return $str;
    //  change EUC-JP to UTF-8
    //return mb_convert_encoding($str,"UTF-8","EUC-JP");
  }
  /**
  *  file output filter
  */
  function output(&$str)
  {
    return $str;
    //  change UTF-8 to EUC-JP
    //return mb_convert_encoding($str,"EUC-JP","UTF-8");
  }
}
//
//  create instance
//  
$ptagParser =& new PTagParser();
function setPTaglib($prefix,$tag,$className)
{
  global $ptagParser;
  $ptagParser->setTaglib($prefix,$tag,$className);
}
function ptagParse($input,$output)
{
  global $ptagParser;
  $ptagParser->parse($input,$output);
}
?>