| | |
| | | | program/include/rcube_string_replacer.php | |
| | | | | |
| | | | This file is part of the Roundcube Webmail client | |
| | | | Copyright (C) 2009, Roundcube Dev. - Switzerland | |
| | | | Licensed under the GNU GPL | |
| | | | Copyright (C) 2009, The Roundcube Dev Team | |
| | | | | |
| | | | Licensed under the GNU General Public License version 3 or | |
| | | | any later version with exceptions for skins & plugins. | |
| | | | See the README file for a full license statement. | |
| | | | | |
| | | | PURPOSE: | |
| | | | Handle string replacements based on preg_replace_callback | |
| | |
| | | +-----------------------------------------------------------------------+ |
| | | | Author: Thomas Bruederli <roundcube@gmail.com> | |
| | | +-----------------------------------------------------------------------+ |
| | | |
| | | $Id$ |
| | | |
| | | */ |
| | | |
| | | |
| | | /** |
| | | * Helper class for string replacements based on preg_replace_callback |
| | | * |
| | | * @package Core |
| | | * @package Framework |
| | | * @subpackage Utils |
| | | */ |
| | | class rcube_string_replacer |
| | | { |
| | |
| | | function __construct() |
| | | { |
| | | // Simplified domain expression for UTF8 characters handling |
| | | $utf_domain = '[^?&@"\'\\/()\s\r\t\n]+\\.[a-z]{2,5}'; |
| | | $url = '[a-z0-9%=#@+?.:;&\\/_~-]+'; |
| | | // Support unicode/punycode in top-level domain part |
| | | $utf_domain = '[^?&@"\'\\/()\s\r\t\n]+\\.?([^\\x00-\\x2f\\x3b-\\x40\\x5b-\\x60\\x7b-\\x7f]{2,}|xn--[a-zA-Z0-9]{2,})'; |
| | | $url1 = '.:;,'; |
| | | $url2 = 'a-zA-Z0-9%=#$@+?!&\\/_~\\[\\]{}\*-'; |
| | | |
| | | $this->link_pattern = "/([\w]+:\/\/|\Wwww\.)($utf_domain($url)?)/i"; |
| | | $this->link_pattern = "/([\w]+:\/\/|\W[Ww][Ww][Ww]\.|^[Ww][Ww][Ww]\.)($utf_domain([$url1]?[$url2]+)*)/"; |
| | | $this->mailto_pattern = "/(" |
| | | ."[-\w!\#\$%&\'*+~\/^`|{}=]+(?:\.[-\w!\#\$%&\'*+~\/^`|{}=]+)*" // local-part |
| | | ."@$utf_domain" // domain-part |
| | | ."(\?$url)?" // e.g. ?subject=test... |
| | | .")/i"; |
| | | ."(\?[$url1$url2]+)?" // e.g. ?subject=test... |
| | | .")/"; |
| | | } |
| | | |
| | | /** |
| | |
| | | $i = -1; |
| | | $scheme = strtolower($matches[1]); |
| | | |
| | | if (preg_match('!^(http|ftp|file)s?://!', $scheme)) { |
| | | if (preg_match('!^(http|ftp|file)s?://!i', $scheme)) { |
| | | $url = $matches[1] . $matches[2]; |
| | | $i = $this->add(html::a(array('href' => $url, 'target' => '_blank'), Q($url))); |
| | | } |
| | | else if (preg_match('/^(\W)www\.$/', $matches[1], $m)) { |
| | | $url = 'www.' . $matches[2]; |
| | | $i = $this->add($m[1] . html::a(array('href' => 'http://' . $url, 'target' => '_blank'), Q($url))); |
| | | else if (preg_match('/^(\W*)(www\.)$/i', $matches[1], $m)) { |
| | | $url = $m[2] . $matches[2]; |
| | | $url_prefix = 'http://'; |
| | | $prefix = $m[1]; |
| | | } |
| | | |
| | | if ($url) { |
| | | $suffix = $this->parse_url_brackets($url); |
| | | $i = $this->add($prefix . html::a(array( |
| | | 'href' => $url_prefix . $url, |
| | | 'target' => '_blank' |
| | | ), rcmail::Q($url)) . $suffix); |
| | | } |
| | | |
| | | // Return valid link for recognized schemes, otherwise, return the unmodified string for unrecognized schemes. |
| | |
| | | */ |
| | | public function mailto_callback($matches) |
| | | { |
| | | $href = $matches[1]; |
| | | $suffix = $this->parse_url_brackets($href); |
| | | |
| | | $i = $this->add(html::a(array( |
| | | 'href' => 'mailto:' . $matches[1], |
| | | 'onclick' => "return ".JS_OBJECT_NAME.".command('compose','".JQ($matches[1])."',this)", |
| | | ), |
| | | Q($matches[1]))); |
| | | 'href' => 'mailto:' . $href, |
| | | 'onclick' => "return ".rcmail::JS_OBJECT_NAME.".command('compose','".rcmail::JQ($href)."',this)", |
| | | ), rcmail::Q($href)) . $suffix); |
| | | |
| | | return $i >= 0 ? $this->get_replacement($i) : ''; |
| | | } |
| | |
| | | } |
| | | |
| | | /** |
| | | * Replace all defined (link|mailto) patterns with replacement string |
| | | * |
| | | * @param string $str Text |
| | | * |
| | | * @return string Text |
| | | */ |
| | | public function replace($str) |
| | | { |
| | | // search for patterns like links and e-mail addresses |
| | | $str = preg_replace_callback($this->link_pattern, array($this, 'link_callback'), $str); |
| | | $str = preg_replace_callback($this->mailto_pattern, array($this, 'mailto_callback'), $str); |
| | | |
| | | return $str; |
| | | } |
| | | |
| | | /** |
| | | * Replace substituted strings with original values |
| | | */ |
| | | public function resolve($str) |
| | |
| | | return preg_replace_callback(self::$pattern, array($this, 'replace_callback'), $str); |
| | | } |
| | | |
| | | } |
| | | /** |
| | | * Fixes bracket characters in URL handling |
| | | */ |
| | | public static function parse_url_brackets(&$url) |
| | | { |
| | | // #1487672: special handling of square brackets, |
| | | // URL regexp allows [] characters in URL, for example: |
| | | // "http://example.com/?a[b]=c". However we need to handle |
| | | // properly situation when a bracket is placed at the end |
| | | // of the link e.g. "[http://example.com]" |
| | | if (preg_match('/(\\[|\\])/', $url)) { |
| | | $in = false; |
| | | for ($i=0, $len=strlen($url); $i<$len; $i++) { |
| | | if ($url[$i] == '[') { |
| | | if ($in) |
| | | break; |
| | | $in = true; |
| | | } |
| | | else if ($url[$i] == ']') { |
| | | if (!$in) |
| | | break; |
| | | $in = false; |
| | | } |
| | | } |
| | | |
| | | if ($i<$len) { |
| | | $suffix = substr($url, $i); |
| | | $url = substr($url, 0, $i); |
| | | } |
| | | } |
| | | |
| | | return $suffix; |
| | | } |
| | | |
| | | } |