modules/extlink/extlink.js

if (Drupal.jsEnabled) {
  $(document).ready(function() {
    // Strip the host name down, removing subdomains or www.
    var host = window.location.host.replace(/^(([^\/]+?\.)*)([^\.]{4,})((\.[a-z]{1,4})*)$/, '$3$4');
    var subdomain = window.location.host.replace(/^(([^\/]+?\.)*)([^\.]{4,})((\.[a-z]{1,4})*)$/, '$1');

    // Determine what subdomains are considered internal.
    if (Drupal.settings.extlink.extSubdomains) {
      var subdomains = "([^/]*)?";
    }
    else if (subdomain == 'www.' || subdomain == '') {
      var subdomains = "(www\.)?";
    }
    else {
      var subdomains = subdomain.replace(".", "\.");
    }

    // Build regular expressions that define an internal link.
    var internal_link = new RegExp("^https?://" + subdomains + host, "i");

    // Find all links which are NOT internal and begin with http (as opposed
    // to ftp://, javascript:, etc. other kinds of links.
    // When operating on the 'this' variable, the host has been appended to
    // all links by the browser, even local ones.
    // In jQuery 1.1 and higher, we'd us a filter method here, but it is not
    // available in jQuery 1.0 (Drupal 5 default).
    var external_links = new Array();
    var mailto_links = new Array();
    $("a").each(function(el) {
      try {
        var url = this.href.toLowerCase();
        if (url.indexOf('http') == 0 && !url.match(internal_link)) {
          external_links.push(this);
        }
        else if (url.indexOf('mailto:') == 0) {
          mailto_links.push(this);
        }
      }
      // IE7 throws errors often when dealing with irregular links, such as:
      // <a href="node/10"></a> Empty tags.
      // <a href="http://user:pass@example.com">example</a> User:pass syntax.
      catch(error) {
        return false;
      }
    });

    if (Drupal.settings.extlink.extClass) {
      // Apply the "ext" class to all links not containing images.
      if (parseFloat($().jquery) < 1.2) {
        $(external_links).not('[img]').addClass(Drupal.settings.extlink.extClass);
      }
      else {
        $(external_links).not($(external_links).find('img').parents('a')).addClass(Drupal.settings.extlink.extClass);
      }
    }

    if (Drupal.settings.extlink.mailtoClass) {
      // Apply the "mailto" class to all mailto links not containing images.
      if (parseFloat($().jquery) < 1.2) {
        $(mailto_links).not('[img]').addClass(Drupal.settings.extlink.mailtoClass);
      }
      else {
        $(mailto_links).not($(mailto_links).find('img').parents('a')).addClass(Drupal.settings.extlink.mailtoClass);
      }
    }

    if (Drupal.settings.extlink.extTarget) {
      // Apply the target attribute to all links.
      $(external_links).attr('target', Drupal.settings.extlink.extTarget);
    }
  });
}
1	if (Drupal.jsEnabled) {
2	$(document).ready(function() {
3	// Strip the host name down, removing subdomains or www.
4	var host = window.location.host.replace(/^(([^\/]+?\.))([^\.]{4,})((\.[a-z]{1,4}))$/, '$3$4');
5	var subdomain = window.location.host.replace(/^(([^\/]+?\.))([^\.]{4,})((\.[a-z]{1,4}))$/, '$1');
6
7	// Determine what subdomains are considered internal.
8	if (Drupal.settings.extlink.extSubdomains) {
9	var subdomains = "([^/]*)?";
10	}
11	else if (subdomain == 'www.' \|\| subdomain == '') {
12	var subdomains = "(www\.)?";
13	}
14	else {
15	var subdomains = subdomain.replace(".", "\.");
16	}
17
18	// Build regular expressions that define an internal link.
19	var internal_link = new RegExp("^https?://" + subdomains + host, "i");
20
21	// Find all links which are NOT internal and begin with http (as opposed
22	// to ftp://, javascript:, etc. other kinds of links.
23	// When operating on the 'this' variable, the host has been appended to
24	// all links by the browser, even local ones.
25	// In jQuery 1.1 and higher, we'd us a filter method here, but it is not
26	// available in jQuery 1.0 (Drupal 5 default).
27	var external_links = new Array();
28	var mailto_links = new Array();
29	$("a").each(function(el) {
30	try {
31	var url = this.href.toLowerCase();
32	if (url.indexOf('http') == 0 && !url.match(internal_link)) {
33	external_links.push(this);
34	}
35	else if (url.indexOf('mailto:') == 0) {
36	mailto_links.push(this);
37	}
38	}
39	// IE7 throws errors often when dealing with irregular links, such as:
40	// <a href="node/10"></a> Empty tags.
41	// <a href="http://user:pass@example.com">example</a> User:pass syntax.
42	catch(error) {
43	return false;
44	}
45	});
46
47	if (Drupal.settings.extlink.extClass) {
48	// Apply the "ext" class to all links not containing images.
49	if (parseFloat($().jquery) < 1.2) {
50	$(external_links).not('[img]').addClass(Drupal.settings.extlink.extClass);
51	}
52	else {
53	$(external_links).not($(external_links).find('img').parents('a')).addClass(Drupal.settings.extlink.extClass);
54	}
55	}
56
57	if (Drupal.settings.extlink.mailtoClass) {
58	// Apply the "mailto" class to all mailto links not containing images.
59	if (parseFloat($().jquery) < 1.2) {
60	$(mailto_links).not('[img]').addClass(Drupal.settings.extlink.mailtoClass);
61	}
62	else {
63	$(mailto_links).not($(mailto_links).find('img').parents('a')).addClass(Drupal.settings.extlink.mailtoClass);
64	}
65	}
66
67	if (Drupal.settings.extlink.extTarget) {
68	// Apply the target attribute to all links.
69	$(external_links).attr('target', Drupal.settings.extlink.extTarget);
70	}
71	});
72	}