b374ead24b
* Add "pretty-ssz" tool to lcli * Protect against OOB SSZ offset * Add more work on decoding * Fix benches * Add more decode fixes * Rename fixed_ptr * Add, fix tests * Add extra test * Increase SSZ decode error granularity * Ripples new error types across ssz crate * Add comment to `sanitize_offset` * Introduce max_len to SSZ list decoding * Restrict FixedVector, check for zero-len items * Double check for empty list * Address Michael's comment
41 lines
1.2 KiB
Rust
41 lines
1.2 KiB
Rust
use crate::helpers::parse_path;
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use clap::ArgMatches;
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use serde::Serialize;
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use ssz::Decode;
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use std::fs::File;
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use std::io::Read;
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use types::{EthSpec, SignedBeaconBlock};
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pub fn run<T: EthSpec>(matches: &ArgMatches) -> Result<(), String> {
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let type_str = matches
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.value_of("type")
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.ok_or_else(|| "No type supplied".to_string())?;
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let path = parse_path(matches, "path")?;
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info!("Type: {:?}", type_str);
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let mut bytes = vec![];
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let mut file = File::open(&path).map_err(|e| format!("Unable to open {:?}: {}", path, e))?;
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file.read_to_end(&mut bytes)
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.map_err(|e| format!("Unable to read {:?}: {}", path, e))?;
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match type_str {
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"SignedBeaconBlock" => decode_and_print::<SignedBeaconBlock<T>>(&bytes)?,
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other => return Err(format!("Unknown type: {}", other)),
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};
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Ok(())
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}
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fn decode_and_print<T: Decode + Serialize>(bytes: &[u8]) -> Result<(), String> {
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let item = T::from_ssz_bytes(&bytes).map_err(|e| format!("Ssz decode failed: {:?}", e))?;
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println!(
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"{}",
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serde_yaml::to_string(&item)
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.map_err(|e| format!("Unable to write object to YAML: {:?}", e))?
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);
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Ok(())
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}
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