Match peripheral name exactly to prevent specification of peripheral

such as tim1 accidentally returning peripheral details for tim15 for
instance otherwise fail over to contains match ordered by SVD
peripheral listing.

Author: brandonedens

src/main.rs

@@ -41,17 +41,17 @@ fn main() {
             }
         }
         Some(pattern) => {
-            for peripheral in &d.peripherals {
-                if peripheral.name.to_ascii_lowercase().contains(&pattern) {
-                    println!("{}",
-                             svd2rust::gen_peripheral(peripheral, &d.defaults)
-                                 .iter()
-                                 .map(|i| i.to_string())
-                                 .collect::<Vec<_>>()
-                                 .join("\n\n"));
+            if let Some(peripheral) = d.peripherals
+                .iter()
+                .find(|x| x.name.to_ascii_lowercase() == pattern)
+                .or(d.peripherals.iter().find(|x| x.name.to_ascii_lowercase().contains(&pattern))) {
+                println!("{}",
+                         svd2rust::gen_peripheral(peripheral, &d.defaults)
+                             .iter()
+                             .map(|i| i.to_string())
+                             .collect::<Vec<_>>()
+                             .join("\n\n"));
 
-                    break;
-                }
             }
         }
     }