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