simpledateformat init version

src/lib.rs

@@ -0,0 +1,51 @@
+#[macro_use] extern crate quick_error;
+use chrono::{ Local,prelude::*, };
+
+quick_error! {
+    #[derive(Debug)]
+    pub enum ParseError {
+        Format(m: String) {
+            display("Format error: {}", m)
+        }
+    }
+}
+
+enum SimpleDateFormatPart {
+    Year,
+    Month,
+    Day,
+    Hour,
+    Minute,
+    Second,
+    Literal(String),
+}
+
+pub struct SimpleDateFormat {
+    parts: Vec<SimpleDateFormatPart>,
+}
+
+impl SimpleDateFormat {
+
+    fn format_local(&self, date_time: &DateTime<Local>) -> String {
+        let mut ret = String::with_capacity(512);
+        ret.push_str(&format!("{}", date_time.year()));
+        ret.push('-');
+        ret.push_str(&format!("{}", date_time.month()));
+        ret.push('-');
+        ret.push_str(&format!("{}", date_time.day()));
+        ret
+    }
+}
+
+pub fn fmt(f: &str) -> Result<SimpleDateFormat, ParseError> {
+    Ok(SimpleDateFormat{ parts: vec![] })
+    // Err(ParseError::Format(f.into()))
+}
+
+
+#[test]
+fn it_works() {
+    println!("test output: {}", fmt("").unwrap().format_local(&Local::now()));
+
+    assert_eq!(2 + 2, 4);
+}