diff options
| -rw-r--r-- | program/include/rcube_mime.php | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/program/include/rcube_mime.php b/program/include/rcube_mime.php index 538c8ea45..3cfb4e960 100644 --- a/program/include/rcube_mime.php +++ b/program/include/rcube_mime.php @@ -545,4 +545,149 @@ class rcube_mime return implode("\r\n", $text); } + + /** + * Improved wordwrap function. + * + * @param string $string Text to wrap + * @param int $width Line width + * @param string $break Line separator + * @param bool $cut Enable to cut word + * + * @return string Text + */ + public static function wordwrap($string, $width=75, $break="\n", $cut=false) + { + $para = explode($break, $string); + $string = ''; + + while (count($para)) { + $line = array_shift($para); + if ($line[0] == '>') { + $string .= $line.$break; + continue; + } + + $list = explode(' ', $line); + $len = 0; + while (count($list)) { + $line = array_shift($list); + $l = mb_strlen($line); + $newlen = $len + $l + ($len ? 1 : 0); + + if ($newlen <= $width) { + $string .= ($len ? ' ' : '').$line; + $len += (1 + $l); + } + else { + if ($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; + } + } + else { + $string .= ($len ? $break : '').$line; + if (count($list)) { + $string .= $break; + } + $len = 0; + } + } + else { + $string .= $break.$line; + $len = $l; + } + } + } + + if (count($para)) { + $string .= $break; + } + } + + return $string; + } + + + /** + * A method to guess the mime_type of an attachment. + * + * @param string $path Path to the file. + * @param string $name File name (with suffix) + * @param string $failover Mime type supplied for failover. + * @param string $is_stream Set to True if $path contains file body + * + * @return string + * @author Till Klampaeckel <till@php.net> + * @see http://de2.php.net/manual/en/ref.fileinfo.php + * @see http://de2.php.net/mime_content_type + */ + public static function file_content_type($path, $name, $failover = 'application/octet-stream', $is_stream = false) + { + $mime_type = null; + $mime_magic = rcube::get_instance()->config->get('mime_magic'); + $mime_ext = @include RCMAIL_CONFIG_DIR . '/mimetypes.php'; + + // use file name suffix with hard-coded mime-type map + if (is_array($mime_ext) && $name) { + if ($suffix = substr($name, strrpos($name, '.')+1)) { + $mime_type = $mime_ext[strtolower($suffix)]; + } + } + + // try fileinfo extension if available + if (!$mime_type && function_exists('finfo_open')) { + if ($finfo = finfo_open(FILEINFO_MIME, $mime_magic)) { + if ($is_stream) + $mime_type = finfo_buffer($finfo, $path); + else + $mime_type = finfo_file($finfo, $path); + finfo_close($finfo); + } + } + + // try PHP's mime_content_type + if (!$mime_type && !$is_stream && function_exists('mime_content_type')) { + $mime_type = @mime_content_type($path); + } + + // fall back to user-submitted string + if (!$mime_type) { + $mime_type = $failover; + } + else { + // Sometimes (PHP-5.3?) content-type contains charset definition, + // Remove it (#1487122) also "charset=binary" is useless + $mime_type = array_shift(preg_split('/[; ]/', $mime_type)); + } + + return $mime_type; + } + + + /** + * Detect image type of the given binary data by checking magic numbers. + * + * @param string $data Binary file content + * + * @return string Detected mime-type or jpeg as fallback + */ + public static function image_content_type($data) + { + $type = 'jpeg'; + if (preg_match('/^\x89\x50\x4E\x47/', $data)) $type = 'png'; + else if (preg_match('/^\x47\x49\x46\x38/', $data)) $type = 'gif'; + else if (preg_match('/^\x00\x00\x01\x00/', $data)) $type = 'ico'; + // else if (preg_match('/^\xFF\xD8\xFF\xE0/', $data)) $type = 'jpeg'; + + return 'image/' . $type; + } + } |