generate_corpus_util.php

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<?php
 
function generate_corpus_from_phpt(string $corpusDir, array $testDirs, int $maxLen = 8 * 1024) {
    @mkdir($corpusDir);
    foreach ($testDirs as $testDir) {
        $it = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($testDir),
            RecursiveIteratorIterator::LEAVES_ONLY
        );
 
        foreach ($it as $file) {
            if (!preg_match('/\.phpt$/', $file)) continue;
            $fullCode = file_get_contents($file);
            if (!preg_match('/--FILE--\R(.*?)\R--([_A-Z]+)--/s', $fullCode, $matches)) continue;
            $code = $matches[1];
            if (strlen($code) > $maxLen) continue;
 
            $outFile = str_replace($testDir, '', $file);
            $outFile = str_replace('/', '_', $outFile);
            if (!preg_match('/SKIP_SLOW_TESTS|SKIP_PERF_SENSITIVE|USE_ZEND_ALLOC/', $fullCode)) {
                file_put_contents($corpusDir . '/' . $outFile, $code);
            }
        }
    }
}