Resolved compilation and borrowing errors

src/args.rs

@@ -4,12 +4,12 @@ use clap::ArgMatches;
 
 use config::model::Config;
 
-fn get_config_for_string(arg_value: Option<&str>, config_value: Option<String>, default_value: &str) -> String {
+fn get_config_for_string(arg_value: Option<&str>, config_value: &Option<String>, default_value: &str) -> String {
     String::from(match arg_value {
         Some(v) => v,
-        None => match c.server.host {
+        None => match config_value {
             Some(host) => host,
-            None => default_host,
+            None => default_value,
         }
     })
 }
@@ -26,22 +26,22 @@ fn get_config_for_number<T: FromStr>(arg_value: Option<&str>, config_value: Opti
 
 fn get_number<T: FromStr>(arg_value: Option<&str>, default_value: T) -> T {
     match arg_value {
-        Some(value) => port.parse::<T>().unwrap_or(default_port),
-        None => default_port
+        Some(value) => value.parse::<T>().unwrap_or(default_value),
+        None => default_value
     }
 }
 
 pub fn get_host(args: &ArgMatches, config: &Option<Config>, default_host: &str) -> String {
     let arg_value = args.value_of("host");
-    match config {
-        Some(c) => get_config_for_string(arg_value, c.server.host, default_host),
+    match &config {
+        Some(c) => get_config_for_string(arg_value, &c.server.host, default_host),
         None => String::from(arg_value.unwrap_or(default_host))
     }.clone()
 }
 
 pub fn get_port(args: &ArgMatches, config: &Option<Config>, default_port: i16) -> i16 {
     let arg_value = args.value_of("port");
-    match config {
+    match &config {
         Some(c) => get_config_for_number(arg_value, c.server.port, default_port),
         None => get_number(arg_value, default_port)
     }
@@ -49,8 +49,8 @@ pub fn get_port(args: &ArgMatches, config: &Option<Config>, default_port: i16) -
 
 pub fn get_workers(args: &ArgMatches, config: &Option<Config>, default_workers: usize) -> usize {
     let arg_value = args.value_of("workers");
-    match config {
+    match &config {
         Some(c) => get_config_for_number(arg_value, c.server.workers, default_workers),
-        None => get_number(args_value, default_workers)
+        None => get_number(arg_value, default_workers)
     }
 }