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<?php
$inputFile = __DIR__ . '/CaseFolding.txt';
$outputFile = __DIR__ . '/../src/NamePrep/CaseFoldingData.php';
$map = [];
// Datei zeilenweise lesen
foreach (file($inputFile) as $line) {
// Kommentare und leere Zeilen überspringen
if (empty($line) || $line[0] === '#') {
continue;
}
[$code, $status, $mapping] = array_map('trim', explode(';', $line));
// ignore mapping irrelevant for IDNA2008
if (!in_array($status, ['C', 'F'], true)) {
continue;
}
// For IDNA2008, ß must not be case-folded to "ss"
if (strtoupper($code) === '00DF') {
continue;
}
$from = hexdec($code);
$to = array_map('hexdec', explode(' ', $mapping));
$map[$from] = $to;
}
$output = '<?php
declare(strict_types=1);
namespace Algo26\IdnaConvert\NamePrep;
/**
* @codeCoverageIgnore character maps
*/
class CaseFoldingData implements CaseFoldingDataInterface
{
public array $foldingMap = [
';
foreach ($map as $from => $to) {
$fromHex = sprintf('0x%X', $from);
$toHex = array_map(fn($v) => sprintf('0x%X', $v), $to);
$output .= ' ' . $fromHex . ' => [' . join(', ', $toHex) .'],' . PHP_EOL;
}
$output .= ' ];
}
';
file_put_contents($outputFile, $output);
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