From dfc8cf908da3e4e2c3e95bbd6190df4e3eb96095 Mon Sep 17 00:00:00 2001
From: Fabian Schmidt <fabschmidt@protonmail.com>
Date: Fri, 12 Jan 2024 15:54:39 +0100
Subject: [PATCH] Write plugin to be used in app

---
 src/lib.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 3e863e8..7622dde 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,3 +4,15 @@ use extism_pdk::*;
 pub fn greet(name: String) -> FnResult<String> {
     Ok(format!("Hello, {}!", name))
 }
+
+#[plugin_fn]
+pub fn count_vowels(sentence: String) -> FnResult<String> {
+    let vowels = "aeiouAEIOU";
+    let mut vowel_count = 0;
+    for c in sentence.chars() {
+        if vowels.contains(c) {
+            vowel_count += 1;
+        }
+    }
+    Ok(format!("{vowel_count}"))
+}