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Code Issues Releases Wiki Activity

Update Punycode class to not require PHP's mb_string

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This commit is contained in:
Ryan Cramer
2023-11-15 12:00:14 -05:00
parent adac6a1e30
commit 4aa7104378
1 changed files with 20 additions and 7 deletions
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27
wire/core/Punycode.php
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@@ -71,6 +71,14 @@ class Punycode {
*/ */
protected $encoding; protected $encoding;
/**
* PHP mb string functions supported?
*
* @var bool
*
*/
protected $mb = false;
/** /**
* Constructor * Constructor
* *
@@ -78,7 +86,12 @@ class Punycode {
*/ */
public function __construct($encoding = 'UTF-8') { public function __construct($encoding = 'UTF-8') {
$this->encoding = $encoding; $this->encoding = $encoding;
$this->mb = function_exists("mb_internal_encoding");
} }
public function strtolower($str) { return $this->mb ? mb_strtolower($str, $this->encoding) : strtolower($str); }
public function strlen($str) { return $this->mb ? mb_strlen($str, $this->encoding) : strlen($str); }
public function substr($str, $a, $b) { return $this->mb ? mb_substr($str, $a, $b, $this->encoding) : substr($str, $a, $b); }
/** /**
* Encode a domain to its Punycode version * Encode a domain to its Punycode version
@@ -88,7 +101,7 @@ class Punycode {
* @return string Punycode representation in ASCII * @return string Punycode representation in ASCII
*/ */
public function encode($input) { public function encode($input) {
$input = mb_strtolower($input, $this->encoding); $input = $this->strtolower($input);
$parts = explode('.', $input); $parts = explode('.', $input);
foreach($parts as &$part) { foreach($parts as &$part) {
$part = $this->encodePart($part); $part = $this->encodePart($part);
@@ -122,7 +135,7 @@ class Punycode {
$codePoints['nonBasic'] = array_unique($codePoints['nonBasic']); $codePoints['nonBasic'] = array_unique($codePoints['nonBasic']);
sort($codePoints['nonBasic']); sort($codePoints['nonBasic']);
$i = 0; $i = 0;
$length = mb_strlen($input, $this->encoding); $length = $this->strlen($input);
while($h < $length) { while($h < $length) {
$m = $codePoints['nonBasic'][$i++]; $m = $codePoints['nonBasic'][$i++];
$delta = $delta + ($m - $n) * ($h + 1); $delta = $delta + ($m - $n) * ($h + 1);
@@ -209,9 +222,9 @@ class Punycode {
$bias = $this->adapt($i - $oldi, ++$outputLength, ($oldi === 0)); $bias = $this->adapt($i - $oldi, ++$outputLength, ($oldi === 0));
$n = $n + (int) ($i / $outputLength); $n = $n + (int) ($i / $outputLength);
$i = $i % ($outputLength); $i = $i % ($outputLength);
$output = mb_substr($output, 0, $i, $this->encoding) . $output = $this->substr($output, 0, $i) .
$this->codePointToChar($n) . $this->codePointToChar($n) .
mb_substr($output, $i, $outputLength - 1, $this->encoding); $this->substr($output, $i, $outputLength - 1);
$i++; $i++;
} }
return $output; return $output;
@@ -272,9 +285,9 @@ class Punycode {
'basic' => array(), 'basic' => array(),
'nonBasic' => array(), 'nonBasic' => array(),
); );
$length = mb_strlen($input, $this->encoding); $length = $this->strlen($input);
for($i = 0; $i < $length; $i++) { for($i = 0; $i < $length; $i++) {
$char = mb_substr($input, $i, 1, $this->encoding); $char = $this->substr($input, $i, 1);
$code = $this->charToCodePoint($char); $code = $this->charToCodePoint($char);
if($code < 128) { if($code < 128) {
$codePoints['all'][] = $codePoints['basic'][] = $code; $codePoints['all'][] = $codePoints['basic'][] = $code;
@@ -323,4 +336,4 @@ class Punycode {
return chr(($code >> 18) + 240) . chr((($code >> 12) & 63) + 128) . chr((($code >> 6) & 63) + 128) . chr(($code & 63) + 128); return chr(($code >> 18) + 240) . chr((($code >> 12) & 63) + 128) . chr((($code >> 6) & 63) + 128) . chr(($code & 63) + 128);
} }
} }
} }