Add failing example with regex

ctru-rs/Cargo.toml

@@ -30,6 +30,8 @@ futures = "0.3"
 time = "0.3.7"
 tokio = { version = "1.16", features = ["rt", "time", "sync", "macros"] }
 cfg-if = "1.0.0"
+lazy_static = "1.4.0"
+regex = "1.5.5"
 
 [features]
 default = ["romfs"]

ctru-rs/examples/regex.rs

@@ -0,0 +1,41 @@
+use ctru::console::Console;
+use ctru::gfx::Gfx;
+use ctru::services::apt::Apt;
+use ctru::services::hid::{Hid, KeyPad};
+
+use regex::Regex;
+
+fn main() {
+    ctru::init();
+    let gfx = Gfx::init().expect("Couldn't obtain GFX controller");
+    let _console = Console::init(gfx.bottom_screen.borrow_mut());
+
+    let re = Regex::new(r"(?P<key>.+)=(?P<value>.+)").unwrap();
+
+    for m in ["K1=V1", "no match", "X=Y"] {
+        if let Some(m) = re.captures(m) {
+            println!(
+                "Key = {key:?}, value = {value:?}",
+                key = m.name("key"),
+                value = m.name("value")
+            );
+        }
+    }
+
+    let hid = Hid::init().expect("Couldn't obtain HID controller");
+    let apt = Apt::init().expect("Couldn't obtain APT controller");
+    while apt.main_loop() {
+        //Scan all the inputs. This should be done once for each frame
+        hid.scan_input();
+
+        if hid.keys_down().contains(KeyPad::KEY_START) {
+            break;
+        }
+        // Flush and swap framebuffers
+        gfx.flush_buffers();
+        gfx.swap_buffers();
+
+        // Wait for VBlank
+        gfx.wait_for_vblank();
+    }
+}