tsk-22: Add function to parse env variable to a vector of strings (#25)

Closes #22

Reviewed-on: #25
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

src/utility.rs

@@ -0,0 +1,15 @@
+/// Take the Environment variable and delimitize it. If the value has a delimiter,
+/// extract it into some strings
+pub fn delimitize(var: &crate::EnvVar) -> Result<Vec<String>, std::io::Error> {
+    if var.has_delimiter {
+        Ok(var
+            .value
+            .split(var.delimiter)
+            .map(|c| c.parse::<String>().unwrap())
+            .collect())
+    } else {
+        Err(std::io::Error::other(
+            "Environment variable does not have a delimiter",
+        ))
+    }
+}