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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Util;
use const ENT_QUOTES;
use function assert;
use function class_exists;
use function htmlspecialchars;
use function mb_convert_encoding;
use function ord;
use function preg_replace;
use function settype;
use function strlen;
use DOMCharacterData;
use DOMDocument;
use DOMElement;
use DOMNode;
use DOMText;
use ReflectionClass;
use ReflectionException;
/**
* @internal This class is not covered by the backward compatibility promise for PHPUnit
*/
final class Xml
{
/**
* @deprecated Only used by assertEqualXMLStructure()
*/
public static function import(DOMElement $element): DOMElement
{
return (new DOMDocument)->importNode($element, true);
}
/**
* @deprecated Only used by assertEqualXMLStructure()
*/
public static function removeCharacterDataNodes(DOMNode $node): void
{
if ($node->hasChildNodes()) {
for ($i = $node->childNodes->length - 1; $i >= 0; $i--) {
if (($child = $node->childNodes->item($i)) instanceof DOMCharacterData) {
$node->removeChild($child);
}
}
}
}
/**
* Escapes a string for the use in XML documents.
*
* Any Unicode character is allowed, excluding the surrogate blocks, FFFE,
* and FFFF (not even as character reference).
*
* @see https://www.w3.org/TR/xml/#charsets
*/
public static function prepareString(string $string): string
{
return preg_replace(
'/[\\x00-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]/',
'',
htmlspecialchars(
self::convertToUtf8($string),
ENT_QUOTES
)
);
}
/**
* "Convert" a DOMElement object into a PHP variable.
*/
public static function xmlToVariable(DOMElement $element)
{
$variable = null;
switch ($element->tagName) {
case 'array':
$variable = [];
foreach ($element->childNodes as $entry) {
if (!$entry instanceof DOMElement || $entry->tagName !== 'element') {
continue;
}
$item = $entry->childNodes->item(0);
if ($item instanceof DOMText) {
$item = $entry->childNodes->item(1);
}
$value = self::xmlToVariable($item);
if ($entry->hasAttribute('key')) {
$variable[(string) $entry->getAttribute('key')] = $value;
} else {
$variable[] = $value;
}
}
break;
case 'object':
$className = $element->getAttribute('class');
if ($element->hasChildNodes()) {
$arguments = $element->childNodes->item(0)->childNodes;
$constructorArgs = [];
foreach ($arguments as $argument) {
if ($argument instanceof DOMElement) {
$constructorArgs[] = self::xmlToVariable($argument);
}
}
try {
assert(class_exists($className));
$variable = (new ReflectionClass($className))->newInstanceArgs($constructorArgs);
// @codeCoverageIgnoreStart
} catch (ReflectionException $e) {
throw new Exception(
$e->getMessage(),
$e->getCode(),
$e
);
}
// @codeCoverageIgnoreEnd
} else {
$variable = new $className;
}
break;
case 'boolean':
$variable = $element->textContent === 'true';
break;
case 'integer':
case 'double':
case 'string':
$variable = $element->textContent;
settype($variable, $element->tagName);
break;
}
return $variable;
}
private static function convertToUtf8(string $string): string
{
if (!self::isUtf8($string)) {
$string = mb_convert_encoding($string, 'UTF-8');
}
return $string;
}
private static function isUtf8(string $string): bool
{
$length = strlen($string);
for ($i = 0; $i < $length; $i++) {
if (ord($string[$i]) < 0x80) {
$n = 0;
} elseif ((ord($string[$i]) & 0xE0) === 0xC0) {
$n = 1;
} elseif ((ord($string[$i]) & 0xF0) === 0xE0) {
$n = 2;
} elseif ((ord($string[$i]) & 0xF0) === 0xF0) {
$n = 3;
} else {
return false;
}
for ($j = 0; $j < $n; $j++) {
if ((++$i === $length) || ((ord($string[$i]) & 0xC0) !== 0x80)) {
return false;
}
}
}
return true;
}
}
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