<?php
####### GNU General Public License #############################################
# #
# This file is part of HOA Open Accessibility. #
# Copyright (c) 2007 Ivan ENDERLIN. All rights reserved. #
# #
# HOA Open Accessibility is free software; you can redistribute it and/or #
# modify it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# HOA Open Accessibility is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with HOA Open Accessibility; if not, write to the Free Software #
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #
# #
####### !GNU General Public License ############################################
/**
* Class Xml.
*
* Parse a XML document into a nested array.
* @author Ivan Enderlin <ivan.enderlin@hoa-project.net>
* @copyright 2007 Ivan Enderlin.
* @since PHP4
* @version 0.4
* @package Xml
* @licence GNU GPL
*/
class Xml {
/**
* Xml parser container.
*
* @var resource parser
*/
var $parser;
/**
* Parse result.
*
* @var array pOut
*/
var $pOut = array();
/**
* Contain the overlap tag temporarily .
*
* @var array track
*/
var $track = array();
/**
* Current tag level.
*
* @var string tmpLevel
*/
var $tmpLevel = '';
/**
* Attribut of current tag.
*
* @var array tmpAttrLevel
*/
var $tmpAttrLevel = array();
/**
* Write result.
*
* @var string wOut
*/
var $wOut = '';
/**
* parse
* Set the parser Xml and theses options.
* Xml file could be a string, a file, or curl.
* When the source is loaded, we run the parse.
* After, we clean all the memory and variables,
* and return the result in an array.
*
* @access public
* @param src string Source
* @param typeof string Source type : NULL, FILE, CURL.
* @param encoding string Encoding type.
* @return array
*/
function parse ( $src, $typeof = 'FILE', $encoding = 'UTF-8' ) {
// ini;
// (re)set array;
$this->pOut = array();
$this->parser = xml_parser_create();
xml_parser_set_option($this->parser, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($this->parser, XML_OPTION_TARGET_ENCODING, $encoding);
xml_set_object($this->parser, $this);
xml_set_element_handler($this->parser, 'startHandler', 'endHandler');
xml_set_character_data_handler($this->parser, 'contentHandler');
if(empty($src))
trigger_error('Source could not be empty.', E_USER_ERROR);
// format source;
if($typeof == NULL)
$data = $src;
elseif($typeof == 'FILE') {
$fop = fopen($src, 'r');
$data = null;
while(!feof($fop))
$data .= fread($fop, 1024);
fclose($fop);
}
elseif($typeof == 'CURL') {
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $src);
curl_setopt($curl, CURLOPT_HEADER, 0);
$data = curl_exec($curl);
curl_close($curl);
}
else
return trigger_error('Xml parser need data.', E_USER_ERROR);
// parse $data;
$parse = xml_parse($this->parser, $data);
if(!$parse)
return trigger_error('XML Error : %s at line %d.', E_USER_ERROR,
array(xml_error_string(xml_get_error_code($this->parser)),
xml_get_current_line_number($this->parser)));
// destroy parser;
xml_parser_free($this->parser);
// unset extra vars;
unset($data,
$this->track,
$this->tmpLevel);
// remove global tag and return the result;
return $this->pOut[0][key($this->pOut[0])];
}
/**
* startHandler
* Manage the open tag, and these attributs by callback.
* The purpose is to create a pointer : {{int ptr}}.
* If the pointer exists, we have a multi-tag situation.
* Tag name is stocked like : '<tag>'
* Attributs is stocked like : '<tag>-ATTR'
* Return true but built $this->pOut.
*
* @access private
* @param parser resource Parser resource.
* @param tag string Tag name.
* @param attr array Attribut.
* @return bool
*/
function startHandler ( $parser, $tag, $attr ) {
// built $this->track;
$this->track[] = $tag;
// place pointer to the end;
end($this->track);
// temp level;
$this->tmpLevel = key($this->track);
// built attrLevel into $this->tmpAttrLevel
if(isset($this->tmpAttrLevel[$this->tmpLevel]['attrLevel']))
$this->tmpAttrLevel[$this->tmpLevel]['attrLevel']++;
// built $this->pOut;
if(!isset($this->pOut[key($this->track)][$tag])) {
$this->pOut[key($this->track)][$tag] = '{{'.key($this->track).'}}';
if(!isset($this->tmpAttrLevel[$this->tmpLevel]['attrLevel']))
$this->tmpAttrLevel[$this->tmpLevel]['attrLevel'] = 0;
}
// built attributs;
if(!empty($attr)) {
$this->tmpAttrLevel[$this->tmpLevel][] = $this->tmpAttrLevel[$this->tmpLevel]['attrLevel'];
end($this->tmpAttrLevel[$this->tmpLevel]);
// it's the first attribut;
if(!isset($this->pOut[key($this->track)][$tag.'-ATTR']))
$this->pOut[key($this->track)][$tag.'-ATTR'] = $attr;
// or it's not the first;
else {
// so it's the second;
if(!prev($this->tmpAttrLevel[$this->tmpLevel])) {
$this->pOut[key($this->track)][$tag.'-ATTR'] = array(
current($this->tmpAttrLevel[$this->tmpLevel]) => $this->pOut[key($this->track)][$tag.'-ATTR'],
next($this->tmpAttrLevel[$this->tmpLevel]) => $attr
);
}
// or one other;
else
$this->pOut[key($this->track)][$tag.'-ATTR'][$this->tmpAttrLevel[$this->tmpLevel]['attrLevel']] = $attr;
}
}
return true;
}
/**
* contentHandler
* Detect the pointer, or the multi-tag by callback.
* If we have a pointer, the method replaces this pointer by the content.
* Else we have a multi-tag, the method add a element to this array.
* Return true but built $this->pOut.
*
* @access private
* @param parser resource Parser resource.
* @param contentHandler string Tag content.
* @return bool
*/
function contentHandler ( $parser, $contentHandler ) {
// remove all spaces;
if(!preg_match('#^\\\\s*$#', $contentHandler)) {
// $contentHandler is a string;
if(is_string($this->pOut[key($this->track)][current($this->track)])) {
// then $contentHandler is a pointer : {{int ptr}} case 1;
if(preg_match('#{{([0-9]+)}}#', $this->pOut[key($this->track)][current($this->track)]))
$this->pOut[key($this->track)][current($this->track)] = $contentHandler;
// or then $contentHandler is a multi-tag content case 2;
else {
$this->pOut[key($this->track)][current($this->track)] = array(
0 => $this->pOut[key($this->track)][current($this->track)],
1 => $contentHandler
);
}
}
// or $contentHandler is an array;
else {
// then $contentHandler is the multi-tag array case 1;
if(isset($this->pOut[key($this->track)][current($this->track)][0]))
$this->pOut[key($this->track)][current($this->track)][] = $contentHandler;
// or then $contentHandler is a node-tag case 2;
else
$this->pOut[key($this->track)][current($this->track)] = array(
0 => $this->pOut[key($this->track)][current($this->track)],
1 => $contentHandler
);
}
}
return true;
}
/**
* endHandler
* Detect the last pointer by callback.
* Move the last tags block up.
* And reset some temp variables.
* Return true but built $this->pOut.
*
* @access private
* @param parser resource Parser resource.
* @param tag string Tag name.
* @return bool
*/
function endHandler ( $parser, $tag ) {
// if level--;
if(key($this->track) == $this->tmpLevel-1) {
// search up tag;
// use array_keys if an empty tag exists (taking the last tag);
// if it's a normal framaset;
$keyBack = array_keys($this->pOut[key($this->track)], '{{'.key($this->track).'}}');
$count = count($keyBack);
if($count != 0) {
$keyBack = $keyBack{$count-1};
// move this level up;
$this->pOut[key($this->track)][$keyBack] = $this->pOut[key($this->track)+1];
}
// if we have a multi-tag framaset ($count == 0);
else {
// if place is set;
if(isset($this->pOut[key($this->track)][current($this->track)][0])) {
// if it's a string, we built an array;
if(is_string($this->pOut[key($this->track)][current($this->track)]))
$this->pOut[key($this->track)][current($this->track)] = array(
0 => $this->pOut[key($this->track)][current($this->track)],
1 => $this->pOut[key($this->track)+1]
);
// else add an index into the array;
else
$this->pOut[key($this->track)][current($this->track)][] = $this->pOut[key($this->track)+1];
}
// else set the place;
else
$this->pOut[key($this->track)][current($this->track)] = array(
0 => $this->pOut[key($this->track)][current($this->track)],
1 => $this->pOut[key($this->track)+1]
);
}
// kick $this->pOut level out;
array_pop($this->pOut);
end($this->pOut);
}
// re-temp level;
$this->tmpLevel = key($this->track);
while(isset($this->tmpAttrLevel[$this->tmpLevel+1]))
array_pop($this->tmpAttrLevel);
// kick $this->track level out;
array_pop($this->track);
end($this->track);
return true;
}
}
?> |
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