feat: add format SystemTime

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "simpledateformat"
-version = "0.1.2"
+version = "0.1.3"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "SimpleDateFormat.java style like date format"

src/lib.rs

@@ -8,6 +8,7 @@ use std::{
     str::Chars,
     iter::Peekable,
 };
+use std::time::SystemTime;
 
 quick_error! {
     /// Format parse error
@@ -114,6 +115,16 @@ impl SimpleDateFormat {
         self.format(&Utc::now())
     }
 
+    pub fn format_utc(&self, time: SystemTime) -> String {
+        let date_time: DateTime<Utc> = time.into();
+        self.format(&date_time)
+    }
+
+    pub fn format_local(&self, time: SystemTime) -> String {
+        let date_time: DateTime<Local> = time.into();
+        self.format(&date_time)
+    }
+
     // Format date
     /// ```ignore
     /// let t = Utc.timestamp_millis(1590816448678);