nxt.uri_algorithm source code

1 /** Algorithms operating on URIs including URLs.
2  *
3  * See_Also: https://en.wikipedia.org/wiki/URL
4  */
5 module nxt.uri_algorithm;
6 
7 @safe pure nothrow @nogc:
8 
9 /** Try skip over leading protocol prefix part of an URL `url`.
10  *
11  * Currently only skips either of the prefixes `http://` and `https://`.
12  *
13  * Returns: `true` iff skip was performed, `false` otherwise.
14  *
15  * See_Also: https://en.wikipedia.org/wiki/URL
16  */
17 bool skipOverURLProtocolPrefix(scope ref inout(char)[] url)
18 {
19     import nxt.array_algorithm : skipOver;
20     const(char)[] tmp = url;
21     if (tmp.skipOver(`http`))
22     {
23         tmp.skipOver('s');  // optional s
24         if (tmp.skipOver(`://`))
25         {
26             url = url[$ - tmp.length .. $]; // do it
27             return true;
28         }
29     }
30     return false;
31 }
32 
33 ///
34 @safe pure nothrow @nogc unittest
35 {
36     auto url = "http://www.sunet.se";
37     assert(url.skipOverURLProtocolPrefix());
38     assert(url  == "www.sunet.se");
39 }
40 
41 ///
42 @safe pure nothrow @nogc unittest
43 {
44     auto url = "https://www.sunet.se";
45     assert(url.skipOverURLProtocolPrefix());
46     assert(url  == "www.sunet.se");
47 }