processing-docs/generate/domit/xml_domit_xpath.php at master · processing/processing-docs · GitHub

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<?php

/**

* @package domit-xmlparser

* @subpackage domit-xmlparser-main

* @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

**/

if (!defined('DOMIT_INCLUDE_PATH')) {

define('DOMIT_INCLUDE_PATH', (dirname(__FILE__) . "/"));

}

/** Separator for absolute path */

define('DOMIT_XPATH_SEPARATOR_ABSOLUTE', '/');

/** Separator for relative path */

define('DOMIT_XPATH_SEPARATOR_RELATIVE', '//');

/** OR separator for multiple patterns */

define('DOMIT_XPATH_SEPARATOR_OR', '|');

/** Constant for an absolute path search (starting at the document root) */

define('DOMIT_XPATH_SEARCH_ABSOLUTE', 0);

/** Constant for a relative path search (starting at the level of the calling node) */

define('DOMIT_XPATH_SEARCH_RELATIVE', 1);

/** Constant for a variable path search (finds all matches, regardless of place in the hierarchy) */

define('DOMIT_XPATH_SEARCH_VARIABLE', 2);

/**

* DOMIT! XPath is an XPath parser.

class DOMIT_XPath {

/** @var Object The node from which the search is called */

var $callingNode;

/** @var Object The node that is the current parent of the search */

var $searchType;

/** @var array An array containing a series of path segments for which to search */

var $arPathSegments = array();

/** @var Object A DOMIT_NodeList of matching nodes */

var $nodeList;

/** @var string A temporary string container */

var $charContainer;

/** @var string The current character of the current pattern segment being parsed */

var $currChar;

/** @var string The current pattern segment being parsed */

var $currentSegment;

/** @var array A temporary node container for caching node references at the pattern level*/

var $globalNodeContainer;

/** @var array A temporary node container for caching node references at the pattern segment level */

var $localNodeContainer;

/** @var array Normalization table for XPath syntax */

var $normalizationTable = array('child::' => '', 'self::' => '.',

'attribute::' => '@', 'descendant::' => '*//',

"\t" => ' ', "\x0B" => ' ');

/** @var array A second-pass normalization table for XPath syntax */

var $normalizationTable2 = array(' =' => '=', '= ' => '=', ' <' => '<',

' >' => '>', '< ' => '<', '> ' => '>',

' !' => '!', '( ' => '(',

' )' => ')', ' ]' => ']', '] ' => ']',

' [' => '[', '[ ' => '[', ' /' => '/',

'/ ' => '/', '"' => "'");

/** @var array A third-pass normalization table for XPath syntax */

var $normalizationTable3 = array('position()=' => '',

'/descendant-or-self::node()/' => "//", 'self::node()' => '.',

'parent::node()' => '..');

/**

* Constructor - creates an empty DOMIT_NodeList to store matching nodes

function DOMIT_XPath() {

require_once(DOMIT_INCLUDE_PATH . 'xml_domit_nodemaps.php');

$this->nodeList = new DOMIT_NodeList();

} //DOMIT_XPath

/**

* Parses the supplied "path"-based pattern

* @param Object The node from which the search is called

* @param string The pattern

* @return Object The NodeList containing matching nodes

function &parsePattern(&$node, $pattern, $nodeIndex = 0) {

$this->callingNode =& $node;

$pattern = $this->normalize(trim($pattern));

$this->splitPattern($pattern);

$total = count($this->arPathSegments);

//whole pattern level

for ($i = 0; $i < $total; $i++) {

$outerArray =& $this->arPathSegments[$i];

$this->initSearch($outerArray);

$outerTotal = count($outerArray);

$isInitialMatchAttempt = true;

//variable path segment level

for ($j = 0; $j < $outerTotal; $j++) {

$innerArray =& $outerArray[$j];

$innerTotal = count($innerArray);

if (!$isInitialMatchAttempt) {

$this->searchType = DOMIT_XPATH_SEARCH_VARIABLE;

}

//pattern segment level

for ($k = 0; $k < $innerTotal; $k++) {

$currentPattern = $innerArray[$k];

if (($k == 0) && ($currentPattern == null)) {

if ($innerTotal == 1) {

$isInitialMatchAttempt = false;

}

//else just skip current step and don't alter searchType

}

else {

if (!$isInitialMatchAttempt && ($k > 0)) {

$this->searchType = DOMIT_XPATH_SEARCH_RELATIVE;

}

$this->currentSegment = $currentPattern;

$this->processPatternSegment();

$isInitialMatchAttempt = false;

}

if ($nodeIndex > 0) {

if ($nodeIndex <= count($this->globalNodeContainer)) {

return $this->globalNodeContainer[($nodeIndex - 1)];

}

else {

$null = null;

return $null;

}

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

$this->nodeList->appendNode($currNode);

}

return $this->nodeList;

} //parsePattern

/**

* Generates a new globalNodeContainer of matches

function processPatternSegment() {

$total = strlen($this->currentSegment);

$this->charContainer = '';

$this->localNodeContainer = array();

for ($i = 0; $i < $total; $i++) {

$this->currChar = $this->currentSegment{$i};

switch ($this->currChar) {

case '@':

$this->selectAttribute(substr($this->currentSegment, ($this->currChar + 1)));

$this->updateNodeContainers();

return;

//break;

case '*':

if ($i == ($total - 1)) {

$this->selectNamedChild('*');

}

else {

$this->charContainer .= $this->currChar;

}

break;

case '.':

$this->charContainer .= $this->currChar;

if ($i == ($total - 1)) {

if ($this->charContainer == '..') {

$this->selectParent();

}

else {

return;

}

break;

case ')':

$this->charContainer .= $this->currChar;

$this->selectNodesByFunction();

break;

case '[':

$this->parsePredicate($this->charContainer,

substr($this->currentSegment, ($i + 1)));

return;

//break;

default:

$this->charContainer .= $this->currChar;

}

if ($this->charContainer != '') {

$this->selectNamedChild($this->charContainer);

}

$this->updateNodeContainers();

} //processPatternSegment

/**

* Replaces the global node container with the local node container

function updateNodeContainers() {

$this->globalNodeContainer =& $this->localNodeContainer;

unset($this->localNodeContainer);

} //updateNodeContainers

/**

* Parses a predicate expression [...]

* @param string The pattern segment containing the node expression

* @param string The pattern segment containing the predicate expression

function parsePredicate($nodeName, $patternSegment) {

$arPredicates =& explode('][', $patternSegment);

$total = count($arPredicates);

$lastIndex = $total - 1;

$arPredicates[$lastIndex] = substr($arPredicates[$lastIndex],

0, (strlen($arPredicates[$lastIndex]) - 1));

for ($i = 0; $i < $total; $i++) {

$isRecursive = ($this->searchType == DOMIT_XPATH_SEARCH_VARIABLE) ? true : false;

$currPredicate = $arPredicates[$i];

if (is_numeric($currPredicate)) {

if ($i == 0) {

$this->filterByIndex($nodeName, intval($currPredicate), $isRecursive);

}

else {

$this->refilterByIndex(intval($currPredicate));

}

else {

if ($i == 0) {

$this->selectNamedChild($nodeName);

$this->updateNodeContainers();

}

$phpExpression = $this->predicateToPHP($currPredicate);

$this->filterByPHPExpression($phpExpression);

}

$this->updateNodeContainers();

}

$this->charContainer = '';

} //parsePredicate

/**

* Converts the predicate into PHP evaluable code

* @param string The predicate

* @return string The converted PHP expression

function predicateToPHP($predicate) {

$phpExpression = $predicate;

$currChar = '';

$charContainer = '';

$totalChars = strlen($predicate);

for ($i = 0; $i < $totalChars; $i++) {

$currChar = substr($predicate, $i, 1);

switch ($currChar) {

case '(':

case ')':

case ' ':

if ($charContainer != '') {

$convertedPredicate = $this->expressionToPHP($charContainer);

$phpExpression = str_replace($charContainer, $convertedPredicate, $phpExpression);

$charContainer = '';

}

break;

default:

$charContainer .= $currChar;

}

if ($charContainer != '') {

$convertedPredicate = $this->expressionToPHP($charContainer);

$phpExpression = str_replace($charContainer, $convertedPredicate, $phpExpression);

}

return $phpExpression;

} //predicateToPHP

/**

* Converts the predicate expression into a PHP expression

* @param string The predicate expression

* @return string The converted PHP expression

function expressionToPHP($expression) {

if ($expression == 'and') {

$expression = '&&';

}

else if ($expression == 'or') {

$expression = '||';

}

else if ($expression == 'not') {

$expression = '!';

}

else {

$expression = trim($expression);

if (strpos($expression, '@') !== false) {

if (strpos($expression, '>=') !== false) {

$expression = str_replace('@', ('floatval($' . "contextNode->getAttribute('"), $expression);

$expression = str_replace('>=', "')) >= floatval(", $expression);

if (!is_numeric($expression)) $expression = str_replace('floatval', '', $expression);

$expression .= ')';

}

else if (strpos($expression, '<=') !== false) {

$expression = str_replace('@', ('floatval($' . "contextNode->getAttribute('"), $expression);

$expression = str_replace('<=', "')) <= floatval(", $expression);

if (!is_numeric($expression)) $expression = str_replace('floatval', '', $expression);

$expression .= ')';

}

else if (strpos($expression, '!=') !== false) {

$expression = str_replace('@', ('$' . "contextNode->getAttribute('"), $expression);

$expression = str_replace('!=', "') != ", $expression);

}

else if (strpos($expression, '=') !== false) {

$expression = str_replace('@', ('$' . "contextNode->getAttribute('"), $expression);

$expression = str_replace('=', "') == ", $expression);

}

else if (strpos($expression, '>') !== false) {

$expression = str_replace('>', "')) > floatval(", $expression); //reverse so > doesn't get replaced

$expression = str_replace('@', ('floatval($' . "contextNode->getAttribute('"), $expression);

if (!is_numeric($expression)) $expression = str_replace('floatval', '', $expression);

$expression .= ')';

}

else if (strpos($expression, '<') !== false) {

$expression = str_replace('@', ('floatval($' . "contextNode->getAttribute('"), $expression);

$expression = str_replace('<', "')) < floatval(", $expression);

if (!is_numeric($expression)) $expression = str_replace('floatval', '', $expression);

$expression .= ')';

}

else {

$expression = str_replace('@', ('$' . "contextNode->hasAttribute('"), $expression);

$expression.= "')";

}

else {

if (strpos($expression, '>=') !== false) {

$signPos = strpos($expression, '>=');

$elementName = trim(substr($expression, 0, $signPos));

$elementValue = trim(substr($expression, ($signPos + 2)));

$expression = '$' . "this->hasNamedChildElementGreaterThanOrEqualToValue(" .

'$' . "contextNode, '" . $elementName . "', " .

$elementValue . ')';

}

else if (strpos($expression, '<=') !== false) {

$signPos = strpos($expression, '>=');

$elementName = trim(substr($expression, 0, $signPos));

$elementValue = trim(substr($expression, ($signPos + 2)));

$expression = '$' . "this->hasNamedChildElementLessThanOrEqualToValue(" .

'$' . "contextNode, '" . $elementName . "', " .

$elementValue . ')';

}

else if (strpos($expression, '!=') !== false) {

$signPos = strpos($expression, '>=');

$elementName = trim(substr($expression, 0, $signPos));

$elementValue = trim(substr($expression, ($signPos + 2)));

$expression = '$' . "this->hasNamedChildElementNotEqualToValue(" .

'$' . "contextNode, '" . $elementName . "', " .

$elementValue . ')';

}

else if (strpos($expression, '=') !== false) {

$signPos = strpos($expression, '=');

$elementName = trim(substr($expression, 0, $signPos));

$elementValue = trim(substr($expression, ($signPos + 1)));

$expression = '$' . "this->hasNamedChildElementEqualToValue(" .

'$' . "contextNode, '" . $elementName . "', " .

$elementValue . ')';

}

else if (strpos($expression, '>') !== false) {

$signPos = strpos($expression, '=');

$elementName = trim(substr($expression, 0, $signPos));

$elementValue = trim(substr($expression, ($signPos + 1)));

$expression = '$' . "this->hasNamedChildElementGreaterThanValue(" .

'$' . "contextNode, '" . $elementName . "', " .

$elementValue . ')';

}

else if (strpos($expression, '<') !== false) {

$signPos = strpos($expression, '=');

$elementName = trim(substr($expression, 0, $signPos));

$elementValue = trim(substr($expression, ($signPos + 1)));

$expression = '$' . "this->hasNamedChildElementLessThanValue(" .

'$' . "contextNode, '" . $elementName . "', " .

$elementValue . ')';

}

else {

$expression = '$' . "this->hasNamedChildElement(" .

'$' . "contextNode, '" . $expression . "')";

}

return $expression;

} //expressionToPHP

/**

* Selects nodes that match the predicate expression

* @param string The predicate expression, formatted as a PHP expression

function filterByPHPExpression($expression) {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$contextNode =& $this->globalNodeContainer[$key];

if ($contextNode->nodeType == DOMIT_ELEMENT_NODE) {

$evaluatedExpression = 'if (' . $expression . ") $" .

'this->localNodeContainer[] =& $' . 'contextNode;';

eval($evaluatedExpression);

}

} //filterByPHPExpression

/**

* Selects nodes with child elements that match the specified name

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @return boolean True if a matching child element exists

function hasNamedChildElement(&$parentNode, $nodeName) {

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {

return true;

}

return false;

} //hasNamedChildElement

/**

* Selects nodes with child elements that match the specified name and text value

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @param string The text string to match on

* @return boolean True if a matching child element exists

function hasNamedChildElementEqualToValue(&$parentNode, $nodeName, $nodeValue) {

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) &&

($currNode->nodeName == $nodeName) && ($currNode->getText() == $nodeValue)) {

return true;

}

return false;

} //hasNamedChildElementEqualToValue

/**

* Selects nodes with child elements that are greater than or equal to the specified name and value

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @param string The text string to match on

* @return boolean True if a matching child element exists

function hasNamedChildElementGreaterThanOrEqualToValue(&$parentNode, $nodeName, $nodeValue) {

$isNumeric = false;

if (is_numeric($nodeValue)) {

$isNumeric = true;

$nodeValue = floatval($nodeValue);

}

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {

if ($isNumeric) {$compareVal = floatval($currNode->getText());}

else {$compareVal = $currNode->getText();}

if ($compareVal >= $nodeValue) return true;

}

return false;

} //hasNamedChildElementGreaterThanOrEqualToValue

/**

* Selects nodes with child elements that are less than or equal to the specified name and value

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @param string The text string to match on

* @return boolean True if a matching child element exists

function hasNamedChildElementLessThanOrEqualToValue(&$parentNode, $nodeName, $nodeValue) {

$isNumeric = false;

if (is_numeric($nodeValue)) {

$isNumeric = true;

$nodeValue = floatval($nodeValue);

}

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {

if ($isNumeric) {$compareVal = floatval($currNode->getText());}

else {$compareVal = $currNode->getText();}

if ($compareVal <= $nodeValue) return true;

}

return false;

} //hasNamedChildElementLessThanOrEqualToValue

/**

* Selects nodes with child elements that are not equal to the specified name and value

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @param string The text string to match on

* @return boolean True if a matching child element exists

function hasNamedChildElementNotEqualToValue(&$parentNode, $nodeName, $nodeValue) {

$isNumeric = false;

if (is_numeric($nodeValue)) {

$isNumeric = true;

$nodeValue = floatval($nodeValue);

}

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {

if ($isNumeric) {$compareVal = floatval($currNode->getText());}

else {$compareVal = $currNode->getText();}

if ($compareVal != $nodeValue) return true;

}

return false;

} //hasNamedChildElementNotEqualToValue

/**

* Selects nodes with child elements that are greater than the specified name and value

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @param string The text string to match on

* @return boolean True if a matching child element exists

function hasNamedChildElementGreaterThanValue(&$parentNode, $nodeName, $nodeValue) {

$isNumeric = false;

if (is_numeric($nodeValue)) {

$isNumeric = true;

$nodeValue = floatval($nodeValue);

}

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {

if ($isNumeric) {$compareVal = floatval($currNode->getText());}

else {$compareVal = $currNode->getText();}

if ($compareVal > $nodeValue) return true;

}

return false;

} //hasNamedChildElementGreaterThanValue

/**

* Selects nodes with child elements that are less than the specified name and value

* @param object The parent node of the child elements to match

* @param string The tag name to match on

* @param string The text string to match on

* @return boolean True if a matching child element exists

function hasNamedChildElementLessThanValue(&$parentNode, $nodeName, $nodeValue) {

$isNumeric = false;

if (is_numeric($nodeValue)) {

$isNumeric = true;

$nodeValue = floatval($nodeValue);

}

$total = $parentNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $parentNode->childNodes[$i];

if (($currNode->nodeType == DOMIT_ELEMENT_NODE) && ($currNode->nodeName == $nodeName)) {

if ($isNumeric) {$compareVal = floatval($currNode->getText());}

else {$compareVal = $currNode->getText();}

if ($compareVal < $nodeValue) return true;

}

return false;

} //hasNamedChildElementLessThanValue

/**

* Selects named elements of the specified index

* @param string The pattern segment containing the node expression

* @param int The index (base 1) of the matching node

* @param boolean True if the selection is to be performed recursively

function refilterByIndex($index) {

if ($index > 1) {

if (count($this->globalNodeContainer) != 0) {

$counter = 0;

$lastParentID = null;

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

if (($lastParentID != null) && ($currNode->parentNode->uid != $lastParentID)) {

$counter = 0;

}

$counter++;

if (($counter == $index) && ($currNode->parentNode->uid == $lastParentID)) {

$this->localNodeContainer[] =& $currNode;

}

$lastParentID = $currNode->parentNode->uid;

}

else {

$this->localNodeContainer =& $this->globalNodeContainer;

}

} //refilterByIndex

/**

* Selects named elements of the specified index

* @param string The pattern segment containing the node expression

* @param int The index (base 1) of the matching node

* @param boolean True if the selection is to be performed recursively

function filterByIndex($nodeName, $index, $deep) {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

$this->_filterByIndex($currNode, $nodeName, $index, $deep);

}

} //filterByIndex

/**

* Selects named elements of the specified index

* @param object The context node

* @param string The pattern segment containing the node expression

* @param int The index (base 1) of the matching node

* @param boolean True if the selection is to be performed recursively

function _filterByIndex(&$contextNode, $nodeName, $index, $deep) {

if (($contextNode->nodeType == DOMIT_ELEMENT_NODE) ||

($contextNode->nodeType == DOMIT_DOCUMENT_NODE)) {

$total = $contextNode->childCount;

$nodeCounter = 0;

for ($i = 0; $i < $total; $i++) {

$currChildNode =& $contextNode->childNodes[$i];

if ($currChildNode->nodeName == $nodeName) {

$nodeCounter++;

if ($nodeCounter == $index) {

$this->localNodeContainer[] =& $currChildNode;

}

if ($deep) {

$this->_filterByIndex($currChildNode, $nodeName, $index, $deep);

}

} //_filterByIndex

/**

* Selects named elements with the specified named child

* @param string The pattern segment containing the node expression

* @param string The tag name of the matching child

* @param boolean True if the selection is to be performed recursively

function filterByChildName($nodeName, $childName, $deep) {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

$this->_filterByChildName($currNode, $nodeName, $childName, $deep);

}

} //filterByChildName

/**

* Selects named elements with the specified named child

* @param object The context node

* @param string The pattern segment containing the node expression

* @param string The tag name of the matching child

* @param boolean True if the selection is to be performed recursively

function _filterByChildName(&$contextNode, $nodeName, $childName, $deep) {

if (($contextNode->nodeType == DOMIT_ELEMENT_NODE) ||

($contextNode->nodeType == DOMIT_DOCUMENT_NODE)) {

$total = $contextNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currChildNode =& $contextNode->childNodes[$i];

if (($currChildNode->nodeName == $nodeName) &&

($currChildNode->nodeType == DOMIT_ELEMENT_NODE)) {

$total2 = $currChildNode->childCount;

for ($j = 0; $j < $total2; $j++) {

$currChildChildNode =& $currChildNode->childNodes[$j];

if ($currChildChildNode->nodeName == $childName) {

$this->localNodeContainer[] =& $currChildNode;

}

if ($deep) {

$this->_filterByChildName($currChildNode, $nodeName, $childName, $deep);

}

} //_filterByChildName

/**

* Selects named attributes of the current context nodes

* @param string The attribute name, or * to match all attributes

function selectAttribute($attrName) {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

$isRecursive = ($this->searchType == DOMIT_XPATH_SEARCH_VARIABLE) ? true : false;

$this->_selectAttribute($currNode, $attrName, $isRecursive);

}

$this->charContainer = '';

} //selectAttribute

/**

* Selects all attributes of the context nodes

* @param object The context node

* @param string The attribute name, or * to match all attributes

* @param boolean True if the selection is to be performed recursively

function _selectAttribute(&$contextNode, $attrName, $deep) {

if (($contextNode->nodeType == DOMIT_ELEMENT_NODE) ||

($contextNode->nodeType == DOMIT_DOCUMENT_NODE)) {

$total = $contextNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $contextNode->childNodes[$i];

if ($currNode->nodeType == DOMIT_ELEMENT_NODE) {

if ($attrName == '*') {

$total2 = $currNode->attributes->getLength();

for ($j = 0; $j < $total2; $j++) {

$this->localNodeContainer[] =& $currNode->attributes->item($j);

}

else {

if ($currNode->hasAttribute($attrName)) {

$this->localNodeContainer[] =& $currNode->getAttributeNode($attrName);

}

if ($deep) {

$this->_selectAttribute($currNode, $attrName, $deep);

}

} //_selectAttribute

/**

* Selects all child nodes of the current context nodes

* @param string The element name

function selectNamedChild($tagName) {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

$isRecursive = ($this->searchType == DOMIT_XPATH_SEARCH_VARIABLE) ? true : false;

$this->_selectNamedChild($currNode, $tagName, $isRecursive);

}

$this->charContainer = '';

} //selectNamedChild

/**

* Selects all child nodes of the context node

* @param object The context node

* @param string The element name

* @param boolean True if the selection is to be performed recursively

function _selectNamedChild(&$contextNode, $tagName, $deep = false) {

if (($contextNode->nodeType == DOMIT_ELEMENT_NODE) ||

($contextNode->nodeType == DOMIT_DOCUMENT_NODE)) {

$total = $contextNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currChildNode =& $contextNode->childNodes[$i];

if (($currChildNode->nodeType == DOMIT_ELEMENT_NODE) ||

($currChildNode->nodeType == DOMIT_DOCUMENT_NODE)) {

if (($tagName == '*') || ($tagName == $currChildNode->nodeName)) {

$this->localNodeContainer[] =& $currChildNode;

}

if ($deep) {

$this->_selectNamedChild($currChildNode, $tagName, $deep);

}

} //_selectNamedChild

/**

* Selects parent node of the current context nodes

function selectParent() {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

$isRecursive = ($this->searchType == DOMIT_XPATH_SEARCH_VARIABLE) ? true : false;

$this->_selectParent($currNode, $isRecursive);

}

$this->charContainer = '';

} //selectParent

/**

* Selects parent node of the current context nodes

* @param object The context node

* @param boolean True if the selection is to be performed recursively

function _selectParent(&$contextNode, $deep = false) {

if ($contextNode->nodeType == DOMIT_ELEMENT_NODE) {

if ($contextNode->parentNode != null) {

$this->localNodeContainer[] =& $contextNode->parentNode;

}

if ($deep) {

if (($contextNode->nodeType == DOMIT_ELEMENT_NODE) ||

($contextNode->nodeType == DOMIT_DOCUMENT_NODE)) {

$total = $contextNode->childCount;

for ($i = 0; $i < $total; $i++) {

$currNode =& $contextNode->childNodes[$i];

if ($currNode->nodeType == DOMIT_ELEMENT_NODE) {

$this->_selectParent($contextNode, $deep);

}

} //_selectParent

/**

* Selects any nodes of the current context nodes which match the given function

function selectNodesByFunction() {

$doProcess = false;

$targetNodeType = -1;

switch (strtolower(trim($this->charContainer))) {

case 'last()':

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

if ($currNode->nodeType == DOMIT_ELEMENT_NODE) {

if ($currNode->lastChild != null) {

$this->localNodeContainer[] =& $currNode->lastChild;

}

break;

case 'text()':

$doProcess = true;

$targetNodeType = DOMIT_TEXT_NODE;

break;

case 'comment()':

$doProcess = true;

$targetNodeType = DOMIT_COMMENT_NODE;

break;

case 'processing-instruction()':

$doProcess = true;

$targetNodeType = DOMIT_PROCESSING_INSTRUCTION_NODE;

break;

}

if ($doProcess) {

if (count($this->globalNodeContainer) != 0) {

foreach ($this->globalNodeContainer as $key =>$value) {

$currNode =& $this->globalNodeContainer[$key];

if ($currNode->nodeType == DOMIT_ELEMENT_NODE) {

$total = $currNode->childCount;

for ($j = 0; $j < $total; $j++) {

if ($currNode->childNodes[$j]->nodeType == $targetNodeType) {

$this->localNodeContainer[] =& $currNode->childNodes[$j];

}

$this->charContainer = '';

} //selectNodesByFunction

/**

* Splits the supplied pattern into searchable segments

* @param string The pattern

function splitPattern($pattern) {

//split multiple patterns if they exist (e.g. pattern1 | pattern2 | pattern3)

$this->arPathSegments =& explode(DOMIT_XPATH_SEPARATOR_OR, $pattern);

//split each pattern by relative path dividers (i.e., '//')

$total = count($this->arPathSegments);

for ($i = 0; $i < $total; $i++) {

$this->arPathSegments[$i] =& explode(DOMIT_XPATH_SEPARATOR_RELATIVE, trim($this->arPathSegments[$i]));

$currArray =& $this->arPathSegments[$i];

$total2 = count($currArray);

for ($j = 0; $j < $total2; $j++) {

$currArray[$j] =& explode(DOMIT_XPATH_SEPARATOR_ABSOLUTE, $currArray[$j]);

}

} //splitPattern

/**

* Converts long XPath syntax into abbreviated XPath syntax

* @param string The pattern

* @return string The normalized pattern

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processing-docs/generate/domit/xml_domit_xpath.php at master · processing/processing-docs · GitHub

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