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C:/php5/PEAR/PHPDoc/xmlreader/_[ Writable ]

File:C:/php5/PEAR/PHPDoc/xmlreader/PhpdocXMLReader.php

<?php
/**
* Reads XML documents into a multi dimensional Array.
*
* @version $Id: PhpdocXMLReader.php,v 1.1 2001/05/08 04:48:47 sbergmann Exp $
*/
class PhpdocXMLReader extends PhpdocObject {
    
    /**
    * PHPDocFileHandler object.
    *
    * @var  object PhpdocFileHandler
    * @see  createFileHandler()
    */
    var $filehandler; 

    /**
    * Values array from xml_parse_into_struct().
    *
    * @var  array
    * @see  parse(), stripCloseFromStructvalues(), importXML()
    */
    var $structvalues = array();
    
    /**
    * Parses a given XML file and returns the data as a hash.
    * 
    * Please do not ask me for a in detail explanation of how it is done,
    * the documentation is in the source...
    *
    * @param    string  $filename Name of the xml document
    * @access   public
    * @throws   PhpdocError
    * @see      importXML()
    */    
    function parse($filename) {
    
        if (""==$filename) {
            $this->err[] = new PhpdocError("No filename given.", __FILE__, __LINE__);
            return array();
        }
        
        $parser = xml_parser_create();
        if (!$parser) {
            $this->err = PhpdocError("Can't create a XML Parser.", __FILE__, __LINE__);
            return array();
        }
        xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
        
        $this->createFileHandler();
        $xml = $this->filehandler->getFile($filename);

        $values = array();
        $index  = array();
        xml_parse_into_struct($parser, $xml, $values, $index);
        
        xml_parser_free($parser);

        $this->structvalues = $values;
        $this->stripCloseFromStructvalues();
        list($data, $last) = $this->importXML();
        $this->structvalues = array();
        
        return $data;
    } // end func parse

    /**
    * Creates a PhpdocFileHandler object and saves it to $filehandler if it does not already exist.
    *
    * @see  $filehandler
    */    
    function createFilehandler() {
    
        if (!isset($this->filehandler))
            $this->filehandler = new PhpdocFileHandler;
            
    } // end func createFilehandler
    
    /**
    * Strips all values out of the xml_parse_intro_struct() values array with the type "open".
    *
    * @see  $structvalues 
    */
    function stripCloseFromStructvalues() {
        
        $values = array();
        
        reset($this->structvalues);
        while (list($k, $v) = each($this->structvalues))
            if ("close" != $v["type"])
                $values[] = $v;
                
        $this->structvalues = $values;
    } // end func stripCloseFromStructvalues
     
    /**
    * Converts an xml_parse_into_struct value array to an array that's simmilar to phpdocs internal arrays.
    *
    * Well, don't ask me to explain this hack. Just take it as it. For those who want to unterstand and optimize
    * it:
    *  - PHP3 compatibility is a must
    *  - no XML DOM
    *  - no eval(), this can't be optimized by the compiler
    *
    * @param    integer    
    * @param    integer
    * @return   array    $data[0] = daten, $data[1] = some index value used for the recursion
    * @see      addToArray()
    */
    function importXML($start = 0, $allowed_level = 1) {
        
        $data = array();
        $last = 0;
        
        for ($i = $start; $i < count($this->structvalues); $i++) {
            if ($allowed_level != $this->structvalues[$i]["level"]) 
                break;
            
            $value      = (isset($this->structvalues[$i]["value"])) ? $this->structvalues[$i]["value"] : "";
            $attribs    = (isset($this->structvalues[$i]["attributes"])) ? $this->structvalues[$i]["attributes"] : "";
            $tag        = $this->structvalues[$i]["tag"];

            if ("open" == $this->structvalues[$i]["type"]) {

                list($inner, $next) = $this->importXML($i+1, $this->structvalues[$i]["level"] + 1);
                
                // append the inner data to the current one
                $data                = $this->addToArray($data, $tag, $value, $attribs, $inner);
                
                // skip some entries in $this->structvalues
                $i = $next;
                
            } else {
            
                // same level, append to the array
                $data = $this->addToArray($data, $tag, $value, $attribs);
                
            }
            
            // remember the last index in $this->structvalues we've worked on
            $last = $i;
        }
        
        return array($data, $last);
    } // end func importXML
    
    /**
    * Appends some values to an array
    * Well, don't ask me; just improve it with the remarks on buildXMLResult()
    * @param    array
    * @param    string
    * @param    string    
    * @param    array
    * @param    array
    * @return   array $target
    */
    function addToArray($target, $key, $value = "", $attributes = "", $inner = "") {

        if (!isset($target[$key]["value"]) && !isset($target[$key][0])) {
    
            if ("" != $inner)
                $target[$key] = $inner;

            if ("" != $attributes) {
                reset($attributes);
                while (list($k, $v) = each($attributes))
                    $target[$key][$k] = $this->xmldecode($v);
            }
                
            $target[$key]["value"] = $this->xmldecode($value);
        
        } else {
    
            if (!isset($target[$key][0])) {
        
                $oldvalue = $target[$key];
                $target[$key] = array();
                $target[$key][0] = $oldvalue;
            
                if ("" != $inner)
                    $target[$key][1] = $inner;

                if ("" != $attributes) {
                    reset($attributes);
                    while (list($k, $v)=each($attributes))
                        $target[$key][1][$k] = $this->xmldecode($v);
                }
                
                $target[$key][1]["value"] = $this->xmldecode($value);
                
            } else {
                
                $index = count($target[$key]);
                
                if ("" != $inner)
                    $target[$key][$index] = $inner;

                if ("" != $attributes) {
                    reset($attributes);
                    while (list($k, $v) = each($attributes))
                        $target[$key][$index][$k] = $this->xmldecode($v);
                }
                
                $target[$key][$index]["value"] = $this->xmldecode($value);

            }

        }
    
        return $target;
    } // end func addToArray
    
    /**
    * Replaces some basic entities with their character counterparts.
    * 
    * @param    string  String to decode
    * @return   string  Decoded string
    */
    function xmldecode($value) {
        #return preg_replace( array("@&lt;@", "@&gt;@", "@&apos;@", "@&quot;@", "@&amp;@"), array("<", ">", "'", '"', "&"), $value);
        return utf8_decode(preg_replace( array("@&lt;@", "@&gt;@", "@&apos;@", "@&quot;@", "@&amp;@"), array("<", ">", "'", '"', "&"), $value));
    } // end func xmldecode

} // end class PhpdocXMLReader
?>

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