67 lines
1.9 KiB
PHP
67 lines
1.9 KiB
PHP
<?php
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namespace Algo26\IdnaConvert;
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use Algo26\IdnaConvert\Exception\InvalidCharacterException;
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use Algo26\IdnaConvert\Exception\InvalidIdnVersionException;
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use Algo26\IdnaConvert\Punycode\ToPunycode;
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use Algo26\IdnaConvert\TranscodeUnicode\TranscodeUnicode;
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class ToIdn extends AbstractIdnaConvert implements IdnaConvertInterface
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{
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/** @var TranscodeUnicode */
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private $unicodeTransCoder;
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/** @var ToPunycode */
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private $punycodeEncoder;
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/**
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* @throws InvalidIdnVersionException
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*/
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public function __construct($idnVersion = null)
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{
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$this->unicodeTransCoder = new TranscodeUnicode();
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$this->punycodeEncoder = new ToPunycode($idnVersion);
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}
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/**
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* @param string $host
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*
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* @return string
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* @throws InvalidCharacterException
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* @throws Exception\AlreadyPunycodeException
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*/
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public function convert(string $host): string
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{
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if (strlen($host) === 0) {
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return $host;
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}
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if (strpos('/', $host) !== false
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|| strpos(':', $host) !== false
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|| strpos('?', $host) !== false
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|| strpos('@', $host) !== false
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) {
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throw new InvalidCharacterException('Neither email addresses nor URLs are allowed', 205);
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}
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// These three punctuation characters are treated like the dot
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$host = str_replace(['。', '．', '｡'], '.', $host);
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// Operate per label
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$hostLabels = explode('.', $host);
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foreach ($hostLabels as $index => $label) {
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$asUcs4Array = $this->unicodeTransCoder->convert(
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$label,
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$this->unicodeTransCoder::FORMAT_UTF8,
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$this->unicodeTransCoder::FORMAT_UCS4_ARRAY
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);
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$encoded = $this->punycodeEncoder->convert($asUcs4Array);
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if ($encoded) {
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$hostLabels[$index] = $encoded;
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}
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}
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return implode('.', $hostLabels);
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}
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}
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