refactor mime type with cow str

src/config.rs

@@ -4,7 +4,7 @@ use crate::{
     },
     error::Result,
 };
-use std::{collections::BTreeMap, fs};
+use std::{borrow::Cow, collections::BTreeMap, fs};
 
 use anyhow::Context;
 use serde::Deserialize;
@@ -25,7 +25,7 @@ pub struct SettingHost {
     pub port: u32,
     route: Vec<Option<SettingRoute>>,
     #[serde(skip_deserializing, skip_serializing)]
-    pub route_map: BTreeMap<String, SettingRoute>,
+    pub route_map: HostRouteMap,
     /// Index files format
     #[serde(default = "host_index")]
     pub index: Vec<String>,
@@ -34,12 +34,14 @@ pub struct SettingHost {
     pub keep_alive: u16,
 }
 
+pub type MIMEType = BTreeMap<Cow<'static, str>, Cow<'static, str>>;
+
 #[derive(Deserialize, Clone, Debug)]
 pub struct Settings {
     #[serde(default = "mime_default")]
-    pub default_type: String,
+    pub default_type: Cow<'static, str>,
     #[serde(default = "types_default")]
-    pub types: BTreeMap<String, String>,
+    pub types: MIMEType,
     pub host: Vec<SettingHost>,
 }
 
@@ -64,3 +66,11 @@ pub fn init_config() -> Result<Settings> {
 
     Ok(settings)
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // #[test]
+    // fn
+}

src/consts.rs

@@ -1,8 +1,8 @@
-use std::{collections::BTreeMap, env, process::exit, sync::OnceLock};
+use std::{borrow::Cow, collections::BTreeMap, env, process::exit, sync::OnceLock};
 
 use tracing::error;
 
-use crate::config::{init_config, Settings};
+use crate::config::{init_config, MIMEType, Settings};
 
 // global settings
 static SETTINGS: OnceLock<Settings> = OnceLock::new();
@@ -37,20 +37,20 @@ pub fn keep_alive_timeout_default() -> u16 {
 
 // default mime type for unknow file
 pub const MIME_DEFAULT: &str = "application/octet-stream";
-pub fn mime_default() -> String {
-    MIME_DEFAULT.to_string()
+pub fn mime_default() -> Cow<'static, str> {
+    MIME_DEFAULT.into()
 }
 
 // default mime types
-pub fn types_default() -> BTreeMap<String, String> {
+pub fn types_default() -> MIMEType {
     BTreeMap::new()
 }
 macro_rules! insert_mime {
     ($name:literal, $mime:ident, $map:ident) => {
-        $map.entry($name.to_string()).or_insert($mime.to_string());
+        $map.entry($name.into()).or_insert($mime.into());
     };
 }
-pub fn insert_default_mimes(map: &mut BTreeMap<String, String>) {
+pub fn insert_default_mimes(map: &mut MIMEType) {
     use crate::http::mime::*;
 
     insert_mime!("html", TEXT_HTML, map);