diff options
Diffstat (limited to 'program/lib')
| -rw-r--r-- | program/lib/Roundcube/rcube_mime.php | 148 |
1 files changed, 94 insertions, 54 deletions
diff --git a/program/lib/Roundcube/rcube_mime.php b/program/lib/Roundcube/rcube_mime.php index 7cd520752..1e4fac84a 100644 --- a/program/lib/Roundcube/rcube_mime.php +++ b/program/lib/Roundcube/rcube_mime.php @@ -564,82 +564,122 @@ class rcube_mime /** - * Improved wordwrap function. + * Improved wordwrap function with multibyte support. + * The code is based on Zend_Text_MultiByte::wordWrap(). * - * @param string $string Text to wrap - * @param int $width Line width - * @param string $break Line separator - * @param bool $cut Enable to cut word - * @param string $charset Charset of $string + * @param string $string Text to wrap + * @param int $width Line width + * @param string $break Line separator + * @param bool $cut Enable to cut word + * @param string $charset Charset of $string + * @param bool $wrap_quoted When enabled quoted lines will not be wrapped * * @return string Text */ - public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null) + public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null, $wrap_quoted=true) { - if ($charset && function_exists('mb_internal_encoding')) { - mb_internal_encoding($charset); + if (!$charset) { + $charset = RCUBE_CHARSET; } - $para = preg_split('/\r?\n/', $string); - $string = ''; - - while (count($para)) { - $line = array_shift($para); - if ($line[0] == '>') { - $string .= $line . (count($para) ? $break : ''); - continue; + // detect available functions + $strlen_func = function_exists('iconv_strlen') ? 'iconv_strlen' : 'mb_strlen'; + $strpos_func = function_exists('iconv_strpos') ? 'iconv_strpos' : 'mb_strpos'; + $strrpos_func = function_exists('iconv_strrpos') ? 'iconv_strrpos' : 'mb_strrpos'; + $substr_func = function_exists('iconv_substr') ? 'iconv_substr' : 'mb_substr'; + + // Convert \r\n to \n, this is our line-separator + $string = str_replace("\r\n", "\n", $string); + $separator = "\n"; // must be 1 character length + $result = array(); + + while (($stringLength = $strlen_func($string, $charset)) > 0) { + $breakPos = $strpos_func($string, $separator, 0, $charset); + + // quoted line (do not wrap) + if ($wrap_quoted && $string[0] == '>') { + if ($breakPos === $stringLength - 1 || $breakPos === false) { + $subString = $string; + $cutLength = null; + } + else { + $subString = $substr_func($string, 0, $breakPos, $charset); + $cutLength = $breakPos + 1; + } } + // next line found and current line is shorter than the limit + else if ($breakPos !== false && $breakPos < $width) { + if ($breakPos === $stringLength - 1) { + $subString = $string; + $cutLength = null; + } + else { + $subString = $substr_func($string, 0, $breakPos, $charset); + $cutLength = $breakPos + 1; + } + } + else { + $subString = $substr_func($string, 0, $width, $charset); - $list = explode(' ', $line); - $len = 0; - while (count($list)) { - $line = array_shift($list); - $l = mb_strlen($line); - $space = $len ? 1 : 0; - $newlen = $len + $l + $space; - - if ($newlen <= $width) { - $string .= ($space ? ' ' : '').$line; - $len += ($space + $l); + // last line + if ($subString === $string) { + $cutLength = null; } else { - if ($l > $width) { - if ($cut) { - $start = 0; - while ($l) { - $str = mb_substr($line, $start, $width); - $strlen = mb_strlen($str); - $string .= ($len ? $break : '').$str; - $start += $strlen; - $l -= $strlen; - $len = $strlen; - } + $nextChar = $substr_func($string, $width, 1, $charset); + + if ($nextChar === ' ' || $nextChar === $separator) { + $afterNextChar = $substr_func($string, $width + 1, 1, $charset); + + if ($afterNextChar === false) { + $subString .= $nextChar; + } + + $cutLength = $strlen_func($subString, $charset) + 1; + } + else { + if ($strrpos_func[0] == 'm') { + $spacePos = $strrpos_func($subString, ' ', 0, $charset); } else { - $string .= ($len ? $break : '').$line; - if (count($list)) { - $string .= $break; + $spacePos = $strrpos_func($subString, ' ', $charset); + } + + if ($spacePos !== false) { + $subString = $substr_func($subString, 0, $spacePos, $charset); + $cutLength = $spacePos + 1; + } + else if ($cut === false) { + $spacePos = $strpos_func($string, ' ', 0, $charset); + + if ($spacePos !== false) { + $subString = $substr_func($string, 0, $spacePos, $charset); + $cutLength = $spacePos + 1; + } + else { + $subString = $string; + $cutLength = null; } - $len = 0; } - } - else { - $string .= $break.$line; - $len = $l; + else { + $subString = $substr_func($subString, 0, $width, $charset); + $cutLength = $width; + } } } } - if (count($para)) { - $string .= $break; - } - } + $result[] = $subString; - if ($charset && function_exists('mb_internal_encoding')) { - mb_internal_encoding(RCUBE_CHARSET); + if ($cutLength !== null) { + $string = $substr_func($string, $cutLength, ($stringLength - $cutLength), $charset); + } + else { + break; + } } - return $string; + return implode($break, $result); } |