function QuestionHelper::cloneInputStream

Clones an input stream in order to act on one instance of the same stream without affecting the other instance.

Parameters

resource $inputStream The handler resource:

Return value

resource|null The cloned resource, null in case it could not be cloned

1 call to QuestionHelper::cloneInputStream()

QuestionHelper::readInput in vendor/symfony/console/Helper/QuestionHelper.php

Reads one or more lines of input and returns what is read.

File

vendor/symfony/console/Helper/QuestionHelper.php, line 564

Class

QuestionHelper

The QuestionHelper class provides helpers to interact with the user.

Namespace

Symfony\Component\Console\Helper

Code

private function cloneInputStream($inputStream) {
    $streamMetaData = stream_get_meta_data($inputStream);
    $seekable = $streamMetaData['seekable'] ?? false;
    $mode = $streamMetaData['mode'] ?? 'rb';
    $uri = $streamMetaData['uri'] ?? null;
    if (null === $uri) {
        return null;
    }
    $cloneStream = fopen($uri, $mode);
    // For seekable and writable streams, add all the same data to the
    // cloned stream and then seek to the same offset.
    if (true === $seekable && !\in_array($mode, [
        'r',
        'rb',
        'rt',
    ])) {
        $offset = ftell($inputStream);
        rewind($inputStream);
        stream_copy_to_stream($inputStream, $cloneStream);
        fseek($inputStream, $offset);
        fseek($cloneStream, $offset);
    }
    return $cloneStream;
}