class.ilBibliograficFileReaderBase.php

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<?php

abstract class ilBibliograficFileReaderBase implements ilBibliograficFileReader
{
    const ENCODING_UTF_8 = 'UTF-8';
    const ENCODING_ASCII = 'ASCII';
    const ENCODING_ISO_8859_1 = 'ISO-8859-1';
    protected $file_content = '';
    protected $path_to_file = '';


    public function readContent($path_to_file)
    {
        global $DIC;
        $filesystem = $DIC["filesystem"];
        $this->setPathToFile($path_to_file);
        $this->setFileContent($this->convertStringToUTF8($filesystem->storage()->read($path_to_file)));

        return true;
    }

    protected function convertStringToUTF8($string)
    {
        if (!function_exists('mb_detect_encoding') || !function_exists('mb_detect_order')
            || !function_exists("mb_convert_encoding")
        ) {
            return $string;
        }
        ob_end_clean();
        $mb_detect_encoding = mb_detect_encoding($string);
        mb_detect_order(array( self::ENCODING_UTF_8, self::ENCODING_ISO_8859_1 ));
        switch ($mb_detect_encoding) {
            case self::ENCODING_UTF_8:
                break;
            case self::ENCODING_ASCII:
                $string = utf8_encode(iconv(self::ENCODING_ASCII, 'UTF-8//IGNORE', $string));
                break;
            default:
                $string = mb_convert_encoding($string, self::ENCODING_UTF_8, $mb_detect_encoding);
                break;
        }

        return $string;
    }


    public function getFileContent()
    {
        return $this->file_content;
    }


    public function setFileContent($file_content)
    {
        $this->file_content = $file_content;
    }


    public function getPathToFile()
    {
        return $this->path_to_file;
    }


    public function setPathToFile($path_to_file)
    {
        $this->path_to_file = $path_to_file;
    }
}