library/smarty/libs/plugins/shared.mb_wordwrap.php
author Markus Bröker <broeker.markus@googlemail.com>
Fri, 13 Nov 2015 17:01:42 +0100
changeset 13 4690a1ccb7cc
parent 0 4869aea77e21
permissions -rw-r--r--
Anpassungen nach den DB-Tests
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<?php
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/**
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 * Smarty shared plugin
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 *
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 * @package    Smarty
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 * @subpackage PluginsShared
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 */
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if (!function_exists('smarty_mb_wordwrap')) {
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    /**
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     * Wrap a string to a given number of characters
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     *
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     * @link   http://php.net/manual/en/function.wordwrap.php for similarity
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     *
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     * @param  string $str the string to wrap
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     * @param  int $width the width of the output
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     * @param  string $break the character used to break the line
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     * @param  boolean $cut ignored parameter, just for the sake of
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     *
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     * @return string  wrapped string
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     * @author Rodney Rehm
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     */
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    function smarty_mb_wordwrap($str, $width = 75, $break = "\n", $cut = false) {
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        // break words into tokens using white space as a delimiter
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        $tokens = preg_split('!(\s)!S' . Smarty::$_UTF8_MODIFIER, $str, -1, PREG_SPLIT_NO_EMPTY + PREG_SPLIT_DELIM_CAPTURE);
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        $length = 0;
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        $t = '';
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        $_previous = false;
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        $_space = false;
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        foreach ($tokens as $_token) {
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            $token_length = mb_strlen($_token, Smarty::$_CHARSET);
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            $_tokens = array($_token);
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            if ($token_length > $width) {
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                if ($cut) {
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                    $_tokens = preg_split('!(.{' . $width . '})!S' . Smarty::$_UTF8_MODIFIER, $_token, -1, PREG_SPLIT_NO_EMPTY + PREG_SPLIT_DELIM_CAPTURE);
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                }
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            }
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            foreach ($_tokens as $token) {
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                $_space = !!preg_match('!^\s$!S' . Smarty::$_UTF8_MODIFIER, $token);
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                $token_length = mb_strlen($token, Smarty::$_CHARSET);
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                $length += $token_length;
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                if ($length > $width) {
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                    // remove space before inserted break
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                    if ($_previous) {
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                        $t = mb_substr($t, 0, -1, Smarty::$_CHARSET);
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                    }
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                    if (!$_space) {
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                        // add the break before the token
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                        if (!empty($t)) {
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                            $t .= $break;
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                        }
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                        $length = $token_length;
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                    }
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                } elseif ($token == "\n") {
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                    // hard break must reset counters
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                    $_previous = 0;
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                    $length = 0;
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                }
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                $_previous = $_space;
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                // add the token
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                $t .= $token;
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            }
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        }
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        return $t;
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    }
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}