49 lines
1.1 KiB
Rust
49 lines
1.1 KiB
Rust
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extern crate serde_json;
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extern crate serde_ignored;
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extern crate ethjson;
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use std::collections::BTreeSet;
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use std::{fs, env, process};
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use ethjson::spec::Spec;
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fn quit(s: &str) -> ! {
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println!("{}", s);
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process::exit(1);
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}
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fn main() {
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let mut args = env::args();
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if args.len() != 2 {
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quit("You need to specify chainspec.json\n\
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\n\
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./chainspec <chainspec.json>");
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}
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let path = args.nth(1).expect("args.len() == 2; qed");
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let file = match fs::File::open(&path) {
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Ok(file) => file,
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Err(_) => quit(&format!("{} could not be opened", path)),
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};
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let mut unused = BTreeSet::new();
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let mut deserializer = serde_json::Deserializer::from_reader(file);
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let spec: Result<Spec, _> = serde_ignored::deserialize(&mut deserializer, |field| {
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unused.insert(field.to_string());
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});
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if let Err(err) = spec {
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quit(&format!("{} {}", path, err.to_string()));
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}
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if !unused.is_empty() {
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let err = unused.into_iter()
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.map(|field| format!("{} unexpected field `{}`", path, field))
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.collect::<Vec<_>>()
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.join("\n");
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quit(&err);
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}
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println!("{} is valid", path);
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}
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