e256931e9b
This commit completely rewrites this crate from the ground up, supporting serde at the lowest levels as I believe serde support was intended to do. This is a major change from the previous versions of this crate, with a summary of changes being: * Serialization directly to TOML is now supported without going through a `Value` first. * Deserialization directly from TOML is now supported without going through a `Value`. Note that due to the TOML format some values still are buffered in intermediate memory, but overall this should be at a minimum now. * The API of `Value` was overhauled to match the API of `serde_json::Value`. The changes here were to: * Add `is_*` accessors * Add `get` and `get_mut` for one-field lookups. * Implement panicking lookups through `Index` The old `index` methods are now gone in favor of `get` and `Index` implementations. * A `Datetime` type has been added to represent a TOML datetime in a first-class fashion. Currently this type provides no accessors other than a `Display` implementation, but the idea is that this will grow support over time for decomposing the date. * Support for the `rustc-serialize` crate has been dropped, that'll stay on the 0.2 and 0.1 release trains. * This crate no longer supports the detection of unused fields, for that though you can use the `serde_ignored` crate on crates.io
52 lines
1.4 KiB
Rust
52 lines
1.4 KiB
Rust
#![deny(warnings)]
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extern crate toml;
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extern crate serde_json;
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use std::fs::File;
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use std::env;
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use std::io;
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use std::io::prelude::*;
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use toml::Value as Toml;
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use serde_json::Value as Json;
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fn main() {
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let mut args = env::args();
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let mut input = String::new();
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if args.len() > 1 {
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let name = args.nth(1).unwrap();
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File::open(&name).and_then(|mut f| {
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f.read_to_string(&mut input)
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}).unwrap();
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} else {
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io::stdin().read_to_string(&mut input).unwrap();
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}
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match input.parse() {
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Ok(toml) => {
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let json = convert(toml);
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println!("{}", serde_json::to_string_pretty(&json).unwrap());
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}
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Err(error) => println!("failed to parse TOML: {}", error),
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}
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}
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fn convert(toml: Toml) -> Json {
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match toml {
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Toml::String(s) => Json::String(s),
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Toml::Integer(i) => Json::Number(i.into()),
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Toml::Float(f) => {
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let n = serde_json::Number::from_f64(f)
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.expect("float infinite and nan not allowed");
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Json::Number(n)
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}
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Toml::Boolean(b) => Json::Bool(b),
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Toml::Array(arr) => Json::Array(arr.into_iter().map(convert).collect()),
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Toml::Table(table) => Json::Object(table.into_iter().map(|(k, v)| {
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(k, convert(v))
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}).collect()),
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Toml::Datetime(dt) => Json::String(dt.to_string()),
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}
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}
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