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<?php
/**
* DOMIT Utilities are a set of utilities for the DOMIT! parser
* @package domit-xmlparser
* @copyright (C) 2004 John Heinstein. All rights reserved
* @license http://www.gnu.org/copyleft/lesser.html LGPL License
* @author John Heinstein <johnkarl@nbnet.nb.ca>
* @link http://www.engageinteractive.com/domit/ DOMIT! Home Page
* DOMIT! is Free Software
**/
/**
*@global Array Translation table for predefined XML entities
*/
$GLOBALS['DOMIT_PREDEFINED_ENTITIES'] = array('&' => '&', '<' => '<', '>' => '>',
'"' => '"', "'" => ''');
/**
* A set of utilities for the DOMIT! parser
*
* These methods are intended to be called statically
*
* @package domit-xmlparser
* @author John Heinstein <johnkarl@nbnet.nb.ca>
*/
class DOMIT_Utilities {
/**
* Raises an error if an attempt to instantiate the class is made
*/
function DOMIT_Utilities() {
die("DOMIT_Utilities Error: this is a static class that should never be instantiated.\n" .
"Please use the following syntax to access methods of this class:\n" .
'DOMIT_Utilities::methodName(parameters)');
} //DOMIT_Utilities
/**
* Generates a normalized (formatted for readability) representation of the node and its children
* @param Object The root node of the narmalization
* @param boolean True if illegal xml characters in text nodes and attributes should be converted to entities
* @return string The formatted string representation
*/
function toNormalizedString (&$node, $subEntities=false, $definedEntities) {
$node_level = 0;
$response = '';
//$node is a DOMIT_Document
if ($node->nodeType == DOMIT_DOCUMENT_NODE) {
$total = $node->childCount;
for ($i = 0; $i < $total; $i++) {
$response .= DOMIT_Utilities::getNormalizedString($node->childNodes[$i],
$node_level, $subEntities, $definedEntities);
}
return $response;
}
else {
return ($response . DOMIT_Utilities::getNormalizedString($node,
$node_level, $subEntities, $definedEntities));
}
} //toNormalizedString
/**
* Converts illegal XML characters to their entity representations
* @param string The text to be formatted
* @param array User defined translation table for entities
* @return string The formatted text
*/
function convertEntities($text, $definedEntities) {
global $DOMIT_PREDEFINED_ENTITIES;
$result = strtr($text, $DOMIT_PREDEFINED_ENTITIES);
$result = strtr($result, $definedEntities);
return $result;
} //convertEntities
/**
* Gets a normalized (formatted for readability) representation of the current node
* @param Object The node to be normalized
* @param int The level in the DOM hierarchy where the node is located
* @param boolean True if illegal xml characters in text nodes and attributes should be converted to entities
* @param array User defined translation table for entities
* @return string The normalized string representation
*/
function getNormalizedString(&$node, $node_level, $subEntities=false, $definedEntities) {
$response = '';
switch ($node->nodeType) {
case DOMIT_ELEMENT_NODE:
$response .= DOMIT_Utilities::getNormalizedElementString($node, $response,
$node_level, $subEntities, $definedEntities);
break;
case DOMIT_TEXT_NODE:
if ($node->nextSibling == null) {
$node_level--;
}
$response .= ($subEntities ?
DOMIT_Utilities::convertEntities($node->nodeValue, $definedEntities) :
$node->nodeValue);
break;
case DOMIT_CDATA_SECTION_NODE:
if ($node->nextSibling == null) {
$node_level--;
}
$response .= '<![CDATA[' . $node->nodeValue . ']]>';
break;
case DOMIT_ATTRIBUTE_NODE:
$response .= $node->toString(false, $subEntities);
break;
case DOMIT_DOCUMENT_FRAGMENT_NODE:
$total = $node->childCount;
for ($i = 0; $i < $total; $i++) {
$response .= DOMIT_Utilities::getNormalizedString($node->childNodes[$i], $node_level,
$subEntities, $definedEntities);
}
break;
case DOMIT_COMMENT_NODE:
$response .= '<!--' . $node->nodeValue . '-->';
if ($node->nextSibling == null) {
$node_level--;
}
$response .= DOMIT_Utilities::getIndentation($node_level) ;
break;
case DOMIT_PROCESSING_INSTRUCTION_NODE:
$response .= '<' . '?' . $node->nodeName . ' ' . $node->nodeValue . '?' . '>';
if ($node->nextSibling == null) {
$node_level--;
}
$response .= DOMIT_Utilities::getIndentation($node_level) ;
break;
case DOMIT_DOCUMENT_TYPE_NODE:
$response .= $node->toString() . "\n";
break;
}
return $response;
} //getNormalizedString
/**
* Gets a normalized (formatted for readability) representation of the current element
* @param Object The node to be normalized
* @param string The current normalized text
* @param int The level in the DOM hierarchy where the node is located
* @param boolean True if illegal xml characters in text nodes and attributes should be converted to entities
* @param array User defined translation table for entities
* @return string The normalized string representation
*/
function getNormalizedElementString(&$node, $response, $node_level,
$subEntities, $definedEntities) {
$response .= '<' . $node->nodeName;
//get attributes text
if (is_object($node->attributes)) { //DOMIT
$response .= $node->attributes->toString(false, $subEntities);
/*
if ($node->ownerDocument->isNamespaceAware) {
foreach ($node->namespaceURIMap as $key => $value) {
$response .= ' xmlns:' . $value . '="' . $key . '"';
}
}
*/
}
else { //DOMIT_Lite
foreach ($node->attributes as $key => $value) {
$response .= ' ' . $key . '="';
$response .= ($subEntities ? DOMIT_Utilities::convertEntities($value,
$definedEntities) : $value);
$response .= '"';
}
}
$node_level++;
//if node is childless
if ($node->childCount == 0) {
if ($node->ownerDocument->doExpandEmptyElementTags) {
if (in_array($node->nodeName, $node->ownerDocument->expandEmptyElementExceptions)) {
$response .= ' />';
}
else {
$response .= '></' . $node->nodeName . '>';
}
}
else {
if (in_array($node->nodeName, $node->ownerDocument->expandEmptyElementExceptions)) {
$response .= '></' . $node->nodeName . '>';
}
else {
$response .= ' />';
}
}
}
else {
$response .= '>';
//get children
$myNodes =& $node->childNodes;
$total = $node->childCount;
//no indentation if first child is a text node
if (!DOMIT_Utilities::isTextNode($node->firstChild)) {
$response .= DOMIT_Utilities::getIndentation($node_level);
}
for ($i = 0; $i < $total; $i++) {
$child =& $myNodes[$i];
$response .= DOMIT_Utilities::getNormalizedString($child, $node_level,
$subEntities, $definedEntities);
}
$response .= '</' . $node->nodeName . '>';
}
$node_level--;
if ($node->nextSibling == null) {
$node_level--;
$response .= DOMIT_Utilities::getIndentation($node_level);
}
else {
//no indentation if next sibling is a text node
if (!DOMIT_Utilities::isTextNode($node->nextSibling)) {
$response .= DOMIT_Utilities::getIndentation($node_level);
}
}
return $response;
} //getNormalizedElementString
/**
* Determines whether the specified node is a Text node
* @param Object The node to be tested
* @return boolean True if the node is a Text node
*/
function isTextNode(&$node) {
$type = $node->nodeType;
return (($type == DOMIT_TEXT_NODE) || ($type == DOMIT_CDATA_SECTION_NODE));
} //isTextNode
/**
* Returns the indentation required for the specified node level
* @param int The current node level
* @return string The indentation required for the specified node level
*/
function getIndentation($node_level) {
$INDENT_LEN = ' ';
$indentation = "\n";
for ($i = 0; $i < $node_level; $i++) {
$indentation .= $INDENT_LEN;
}
return $indentation;
} //getIndentation
/**
* Removes the extension from the specified file name
* @param string The file name
* @return string The file name, stripped of its extension
*/
function removeExtension($fileName) {
$total = strlen($fileName);
$index = -1;
for ($i = ($total - 1); $i >= 0; $i--) {
if ($fileName{$i} == '.') {
$index = $i;
}
}
if ($index == -1) {
return $fileName;
}
return (substr($fileName, 0, $index));
} //removeExtension
/**
* Determines whether the XML string is valid (NOT FULLY IMPLEMENTED!)
* @param string The XML text
* @return boolean True if the XML text is valid
*/
function validateXML($xmlText) {
//this does only rudimentary validation
//at this point in time
$isValid = true;
if (is_string($xmlText)) {
$text = trim($xmlText);
switch ($text) {
case '':
$isValid = false;
break;
}
}
else {
$isValid = false;
}
return $isValid;
} //validateXML
/**
* Set the browser header to interpret data as UTF-8 formatted
* @param string The content type of the data
*/
function printUTF8Header($contentType = 'text/html') {
echo header('Content-type: ' . $contentType . '; charset=utf-8');
} //printUTF8Header
/**
* Formats a string for presentation as HTML
* @param string The string to be formatted
* @param boolean True if the string is to be sent directly to output
* @return string The HTML formatted string
*/
function forHTML($text, $doPrint = false) {
if ($doPrint) {
print ('<pre>' . htmlspecialchars($text) . '</pre>');
}
else {
return ('<pre>' . htmlspecialchars($text) . '</pre>');
}
} //forHTML
/**
* Generates a node tree from an array and appends it to the specified document or node
* @param object The document or node to which the child nodes should be appended
* @param array An associative multidimensional array of elements and values
*/
function fromArray (&$node, &$myArray) {
if ($node->nodeType == DOMIT_DOCUMENT_NODE) {
$docNode =& $node;
}
else {
$docNode =& $node->ownerDocument;
}
foreach ($myArray as $key => $value) {
if (is_array($value)) {
//check for numeric indices
$total = count($value);
if (($total > 0) && isset($value[0])){
for ($i = 0; $i < $total; $i++) {
$node->appendChild($docNode->createElement($key));
DOMIT_Utilities::fromArray($node->lastChild, $value[$i]);
}
}
else {
//generate child elements
$node->appendChild($docNode->createElement($key));
DOMIT_Utilities::fromArray($node->lastChild, $value);
}
}
else {
$node->appendChild($docNode->createElement($key));
$node->lastChild->appendChild($docNode->createTextNode($value));
}
}
} //fromArray
function parseAttributes() {
} //parseAttributes
} //DOMIT_Utilities
?>