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<?php
/*
This file is part of ActiveLink PHP XML Package (www.active-link.com).
Copyright (c) 2002-2004 by Zurab Davitiani
You can contact the author of this software via E-mail at
hattrick@mailcan.com
ActiveLink PHP XML Package is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
ActiveLink PHP XML Package 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with ActiveLink PHP XML Package; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* requires XML, Tag and File classes
*/
import("org.active-link.xml.XML");
import("org.active-link.sys.File");
import("org.active-link.xml.Tag");
/**
* XMLDocument class provides a document class for XML
* @class XMLDocument
* @package org.active-link.xml
* @author Zurab Davitiani
* @version 0.4.0
* @extends File
* @requires File, XML, Tag
* @see XML
*/
class XMLDocument extends File {
// protected variables
var $xml;
var $tag;
/**
* If filename is set and fileOpenMode is one of the modes that allows file to be read then file is opened and its contents parsed
* If filename is set and fileOpenMode is something other than above the appropriate file is opened/created
* If filename is not set then no files are opened/parsed/created and object contains default values
* @method XMLDocument
* @param optional string filename
* @param optional string fileOpenMode
*/
function XMLDocument($filename = "", $fileOpenMode = "r") {
$success = $this->File($filename, $fileOpenMode);
$this->tag = new Tag();
$this->tag->tagStartOpen = "<?";
$this->tag->tagClose = "?>";
if($this->connected && ($this->fileOpenMode == $this->fileOpenModeRead || $this->fileOpenMode == $this->fileOpenModeReadWrite)) {
$fileContents = $this->getContents();
$this->close();
$this->parseFromString($fileContents);
}
else {
$this->setDefaultXMLTag();
$this->xml = new XML();
}
return $success;
}
/**
* Returns the XML object containing actual XML tree; in PHP 4 make sure to use =& to get a reference instead of a copy
* @method getXML
* @returns object of type XML containing actual XML tree
*/
function getXML() {
return $this->xml;
}
/**
* Returns the XML string of a complete XML document
* @method getXMLString
* @returns string containing contents of XML document
*/
function getXMLString() {
$xmlString = $this->tag->getTagString();
$xmlString .= "\n\n";
$xmlString .= $this->xml->getXMLString(0);
return $xmlString;
}
/**
* Parses XML document from supplied string, also called from constructor when parsing file contents
* @method parseFromString
* @param string XMLDocString
* @returns none
*/
function parseFromString($XMLDocString) {
$tagPos = $this->tag->setTagFromString($XMLDocString);
if($tagPos === false) {
$tagPos = array(0 => 0, 1 => 0);
$this->setDefaultXMLTag();
}
$xmlContents = trim(substr($XMLDocString, $tagPos[1]));
$this->xml = new XML($xmlContents);
}
/**
* Saves document contents to a supplied filename
* @method save
* @param string filename
* @returns true if successful, false otherwise
*/
function save($filename) {
$success = $this->open($filename, $this->fileOpenModeWrite);
if($success) {
$bytesWritten = $this->write($this->getXMLString());
if($bytesWritten <= 0)
$success = false;
$this->close();
}
return $success;
}
/**
* (Re)sets XML version/encoding to default values
* @method setDefaultXMLTag
* @returns none
*/
function setDefaultXMLTag() {
$this->tag->setTagName("xml");
$this->tag->setAttribute("version", "1.0");
$this->tag->setAttribute("encoding", "UTF-8");
}
/**
* Sets encoding of the XML document
* @method setEncoding
* @param string encoding
* @returns none
*/
function setEncoding($encoding) {
$this->tag->setAttribute("encoding", $encoding);
}
/**
* Sets version of the XML document
* @method setVersion
* @param string version
* @returns none
*/
function setVersion($version) {
$this->tag->setAttribute("version", $version);
}
/**
* Sets XML object of the XMLDocument, sets/changes/updates XML content to the supplied XML tree, uses reference no copy is created
* @method setXML
* @param object xml
* @returns true if successful, false otherwise
*/
function setXML(&$xml) {
$success = false;
if(gettype($xml) == "object" && strtolower(get_class($xml)) == "xml") {
$this->xml = &$xml;
$success = true;
}
return $success;
}
}