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File: HeadersExtractorTrait.php
<?php namespace Gettext\Utils; use Gettext\Translations; /** * Trait to provide the functionality of extracting headers. */ trait HeadersExtractorTrait { /** * Add the headers found to the translations instance. * * @param string $headers * @param Translations $translations * * @return array */ private static function extractHeaders($headers, Translations $translations) { $headers = explode("\n", $headers); $currentHeader = null; foreach ($headers as $line) { $line = self::convertString($line); if ($line === '') { continue; } if (self::isHeaderDefinition($line)) { $header = array_map('trim', explode(':', $line, 2)); $currentHeader = $header[0]; $translations->setHeader($currentHeader, $header[1]); } else { $entry = $translations->getHeader($currentHeader); $translations->setHeader($currentHeader, $entry.$line); } } } /** * Checks if it is a header definition line. Useful for distguishing between header definitions * and possible continuations of a header entry. * * @param string $line Line to parse * * @return bool */ private static function isHeaderDefinition($line) { return (bool) preg_match('/^[\w-]+:/', $line); } /** * Normalize a string. * * @param string $value * * @return string */ public static function convertString($value) { return $value; } }