#[macro_use]
extern crate handlebars;
#[macro_use]
extern crate serde_json;
use chrono::{DateTime, FixedOffset};
use handlebars::Handlebars;
handlebars_helper!(lower: |s: str| s.to_lowercase());
handlebars_helper!(upper: |s: str| s.to_uppercase());
handlebars_helper!(hex: |v: i64| format!("0x{:x}", v));
handlebars_helper!(money: |v: i64, {cur: str="$"}| format!("{}{}.00", cur, v));
handlebars_helper!(all_hash: |{cur: str="$"}| cur);
handlebars_helper!(nargs: |*args| args.len());
handlebars_helper!(has_a: |{a:i64 = 99}, **kwargs|
format!("{}, {}", a, kwargs.get("a").is_some()));
handlebars_helper!(tag: |t: str| format!("<{}>", t));
handlebars_helper!(date: |dt: DateTime<FixedOffset>| dt.format("%F").to_string());
#[test]
fn test_macro_helper() {
let mut hbs = Handlebars::new();
hbs.register_helper("lower", Box::new(lower));
hbs.register_helper("upper", Box::new(upper));
hbs.register_helper("hex", Box::new(hex));
hbs.register_helper("money", Box::new(money));
hbs.register_helper("nargs", Box::new(nargs));
hbs.register_helper("has_a", Box::new(has_a));
hbs.register_helper("tag", Box::new(tag));
hbs.register_helper("date", Box::new(date));
let data = json!("Teixeira");
assert_eq!(
hbs.render_template("{{lower this}}", &data).unwrap(),
"teixeira"
);
assert_eq!(
hbs.render_template("{{upper this}}", &data).unwrap(),
"TEIXEIRA"
);
assert_eq!(hbs.render_template("{{hex 16}}", &()).unwrap(), "0x10");
assert_eq!(
hbs.render_template("{{money 5000}}", &()).unwrap(),
"$5000.00"
);
assert_eq!(
hbs.render_template("{{money 5000 cur=\"£\"}}", &())
.unwrap(),
"£5000.00"
);
assert_eq!(
hbs.render_template("{{nargs 1 1 1 1 1}}", &()).unwrap(),
"5"
);
assert_eq!(hbs.render_template("{{nargs}}", &()).unwrap(), "0");
assert_eq!(
hbs.render_template("{{has_a a=1 b=2}}", &()).unwrap(),
"1, true"
);
assert_eq!(
hbs.render_template("{{has_a x=1 b=2}}", &()).unwrap(),
"99, false"
);
assert_eq!(
hbs.render_template("{{tag \"html\"}}", &()).unwrap(),
"<html>"
);
assert_eq!(
hbs.render_template("{{{tag \"html\"}}}", &()).unwrap(),
"<html>"
);
assert_eq!(
hbs.render_template(
"{{date this}}",
&DateTime::parse_from_rfc2822("Wed, 18 Feb 2015 23:16:09 GMT").unwrap()
)
.unwrap(),
"2015-02-18"
);
}