xml_converter.inc

<?php
require_once 'XML/Parser.php';

class XML_Converter extends XML_Parser
{

    var $array_xml;


    var $indent_xml = false;


    var $compact_array = false;


    var $tag_level = 0;


    function getStringFromArray($xml=NULL, $no_header=false)
    {
        if (!isset($xml)) $xml = &$this->array_xml;

        $this->tag_level = 0;

        $ret = $this->_getStringFromArrayInternal($xml);

        if (!$no_header) {
            $ret = '<?xml version="1.0" encoding="utf-8"?>'.$ret;
        }

        return $ret;

    }//end getStringFromArray()


    function getArrayFromFile($xml_file)
    {
        $ret = NULL;

        $xml = file_get_contents($xml_file);

        if ($xml !== false) {
            $ret = $this->getArrayFromString($xml);
        }

        return $ret;

    }//end getArrayFromFile()


    function getArrayFromString($xml)
    {
        $this->_reset();

        $this->parseString($xml);

        return $this->array_xml[0];

    }//end getArrayFromString()


    function getElementContent(&$parent, $element_name, $default_value=NULL)
    {
        $ret = $default_value;

        if (isset($parent[$element_name][0]['-content'])) {
            $ret = $parent[$element_name][0]['-content'];
        }

        return $ret;

    }//end getElementContent()


    function _getStringFromArrayInternal($xml=NULL, $parent_tag=0)
    {
        $is_tag_open = false;
        $attributes = '';
        $rc = "\n".str_repeat("\t", $this->tag_level ? $this->tag_level - 1 : 0);
        $optional_rc = '';
        $ret = '';

        if (is_array($xml)) {
            foreach ($xml as $xml_key => $xml_val) {

                $is_tag_open |= !is_integer($xml_key);

                if (is_array($xml_val)) {
                    // empty element (no attr or subelement), we force to print the tag name
                    if (count($xml_val)) {
                        $optional_rc = $rc;
                        $tag_name = $xml_key;

                        if (is_integer($xml_key)) {
                            $tag_name = $parent_tag;
                        }
                        else {
                            $this->tag_level++;
                        }

                        $ret .= $this->_getStringFromArrayInternal($xml_val, $tag_name);

                        if (!is_integer($xml_key)) $this->tag_level--;
                    }
                    else {
                        $is_tag_open = true;
                    }
                }
                else {
                    if ($xml_key == '-content') {
                        //$ret .= htmlentities($xml_val);
                        $xml_val = str_replace('&', '&amp;', $xml_val);
                        $ret .= $xml_val;
                    }
                    else if ($xml_key{0} == '@') {
                        $xml_key = substr($xml_key, 1);
                        $attributes .= " $xml_key=\"$xml_val\"";
                    }
                    else {
                        $optional_rc = $rc;
                        $ret .= "<$xml_key>$xml_val</$xml_key>";
                    }
                }
            }
        }

        if ($is_tag_open && $parent_tag) {
            $ret = "$rc<$parent_tag$attributes>$ret$optional_rc</$parent_tag>";
        }

        return $ret;

    }//end _getStringFromArrayInternal()


    function close()
    {
        if (!empty($this->parser) && is_resource($this->parser)) {
            xml_parser_free($this->parser);
        }

    }//end close()


    function _reset()
    {
        $this->close();

        $this->folding = false;
        $this->XML_Parser(null, 'event');

        $this->array_xml = Array(Array());

    }//end _reset()


    function startHandler($xp, $elem, &$attribs)
    {
        $new_tag = Array();

        foreach ($attribs as $attrib_name => $attrib_value) {
            $new_tag['@'.$attrib_name] = $attrib_value;
        }

        $this->array_xml[] = &$new_tag;

    }//end startHandler()


    function endHandler($xp, $elem)
    {
        $element_index = count($this->array_xml) - 1;
        $element = &$this->array_xml[$element_index];
        if (isset($element['-content'])) {
            $element['-content'] = trim($element['-content']);
            if ($element['-content'] == '') {
                unset($this->array_xml[$element_index]['-content']);
            }
        }

        $this->array_xml[$element_index - 1][$elem][] = $element;

        array_pop($this->array_xml);

    }//end endHandler()


    function cdataHandler($xp, $data)
    {
        if (isset($data)) {
            $element = &$this->array_xml[count($this->array_xml) - 1];
            if (!isset($element['-content'])) {
                $element['-content'] = '';
            }
            $element['-content'] .= $data;
        }

    }//end cdataHandler()


}//end class


?>