30 lines
867 B
PHP
30 lines
867 B
PHP
<?php
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// $ echo test | php examples/base64_encode.php | php examples/base64_decode.php
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require __DIR__ . '/../vendor/autoload.php';
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// decoding requires buffering in chunks of 4 bytes each
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$buffer = '';
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Clue\StreamFilter\append(STDIN, function ($chunk = null) use (&$buffer) {
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if ($chunk === null) {
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if (strlen($buffer) % 4 !== 0) {
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throw new \UnexpectedValueException('Invalid length');
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}
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$chunk = $buffer;
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} else {
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$buffer .= $chunk;
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$len = strlen($buffer) - (strlen($buffer) % 4);
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$chunk = (string)substr($buffer, 0, $len);
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$buffer = (string)substr($buffer, $len);
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}
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$ret = base64_decode($chunk, true);
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if ($ret === false) {
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throw new \UnexpectedValueException('Not a valid base64 encoded chunk');
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}
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return $ret;
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}, STREAM_FILTER_READ);
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fpassthru(STDIN);
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