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* @version 0.21
* @copyright 2006-2009 Dmitriy Skorobogatov
* @package Natty
*/
class Natty_TextRandomizer_Node
{
private $_parent = null;
private $_str = '';
private $_type = 'mixing';
private $_subNodes = array();
private $_usedKeys = array();
private $_separator = '';
private $_isSeparator = false;
public function __construct(Natty_TextRandomizer_Node $parent = null)
{
$this->_parent = $parent;
if ($parent) {
$parent->_subNodes[] = $this;
}
}
public function getText()
{
$result = '';
switch ($this->_type) {
case 'synonyms':
if (! count($this->_usedKeys)) {
$this->_usedKeys = array_keys($this->_subNodes);
}
$key = array_rand($this->_usedKeys);
$result = $this->_subNodes[$key]->getText();
unset($this->_usedKeys[$key]);
break;
case 'mixing':
shuffle($this->_subNodes);
foreach ($this->_subNodes as $v) {
if ($result) {
$result .= ' ' . $this->_separator;
}
$result .= ' ' . $v->getText();
}
break;
case 'series':
foreach ($this->_subNodes as $v) {
$result .= ' ' . $v->getText();
}
break;
default:
$result = $this->_str;
}
$result = trim($result);
$result = preg_replace('/\s+/u', ' ', $result);
$result = str_replace(' ,', ',', $result);
$result = str_replace(' .', '.', $result);
$result = str_replace(' !', '!', $result);
$result = str_replace(' ?', '?', $result);
return $result;
}
public function numVariant()
{
$result = 1;
switch ($this->_type) {
case 'synonyms':
$result = 0;
foreach ($this->_subNodes as $v) {
$result += $v->numVariant();
}
break;
case 'mixing':
for ($i=2; $i<=count($this->_subNodes); ++$i) {
$result *= $i;
}
foreach ($this->_subNodes as $v) {
$result *= $v->numVariant();
}
break;
case 'series':
foreach ($this->_subNodes as $v) {
$result *= $v->numVariant();
}
break;
}
return $result;
}
public function concat($str)
{
$str = (string) $str;
if ($this->_isSeparator) {
$this->_separator .= $str;
return $this;
}
if ('string' == $this->type) {
$this->_str .= $str;
return $this;
}
$currentNode = new Natty_TextRandomizer_Node($this);
$currentNode->setType('string');
return $currentNode->concat($str);
}
public function setType($type)
{
switch ((string) $type) {
case 'string':
$this->_type = 'string';
break;
case 'synonyms':
$this->_type = 'synonyms';
break;
case 'series':
$this->_type = 'series';
break;
default:
$this->_type = 'mixing';
}
}
public function __get($var) {
$var = strtolower($var);
switch ((string) $var) {
case 'isseparator':
return $this->_isSeparator;
break;
case 'parent':
return $this->_parent;
break;
case 'type':
return $this->_type;
break;
default:
return null;
}
}
public function __set($var, $value)
{
$var = strtolower($var);
switch ((string) $var) {
case 'isseparator':
$this->_isSeparator = (boolean) $value;
}
}
}
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