44 lines
1.2 KiB
Rust
44 lines
1.2 KiB
Rust
use clap::ArgMatches;
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use serde::Serialize;
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use ssz::Decode;
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use types::{BeaconBlock, BeaconState, EthSpec};
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pub fn run_parse_hex<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 mut hex: String = matches
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.value_of("hex_ssz")
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.ok_or_else(|| "No hex ssz supplied".to_string())?
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.to_string();
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if hex.starts_with("0x") {
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hex = hex[2..].to_string();
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}
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let hex = hex::decode(&hex).map_err(|e| format!("Failed to parse hex: {:?}", e))?;
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info!("Using {} spec", T::spec_name());
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info!("Type: {:?}", type_str);
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match type_str {
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"block" => decode_and_print::<BeaconBlock<T>>(&hex)?,
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"state" => decode_and_print::<BeaconState<T>>(&hex)?,
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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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