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#![deny(warnings)]
extern crate toml;
extern crate serde_json;
use std::fs::File;
use std::env;
use std::io;
use std::io::prelude::*;
use toml::Value as Toml;
use serde_json::Value as Json;
fn main() {
let mut args = env::args();
let mut input = String::new();
if args.len() > 1 {
let name = args.nth(1).unwrap();
File::open(&name).and_then(|mut f| {
f.read_to_string(&mut input)
}).unwrap();
} else {
io::stdin().read_to_string(&mut input).unwrap();
}
match input.parse() {
Ok(toml) => {
let json = convert(toml);
println!("{}", serde_json::to_string_pretty(&json).unwrap());
}
Err(error) => println!("failed to parse TOML: {}", error),
}
}
fn convert(toml: Toml) -> Json {
match toml {
Toml::String(s) => Json::String(s),
Toml::Integer(i) => Json::Number(i.into()),
Toml::Float(f) => {
let n = serde_json::Number::from_f64(f)
.expect("float infinite and nan not allowed");
Json::Number(n)
}
Toml::Boolean(b) => Json::Bool(b),
Toml::Array(arr) => Json::Array(arr.into_iter().map(convert).collect()),
Toml::Table(table) => Json::Object(table.into_iter().map(|(k, v)| {
(k, convert(v))
}).collect()),
Toml::Datetime(dt) => Json::String(dt.to_string()),
}
}
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