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Adds no_more_than_five formatter

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This should be useful when validating very large sets of shares. Wouldn't want
to print out up to 254 shares.
This commit is contained in:
Noah Vesely
2018-03-29 02:53:57 -06:00
committed by Romain Ruetschi
parent 71064a686e
commit d6407c0e8a
1 changed files with 19 additions and 2 deletions
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21
src/errors.rs
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@ -3,6 +3,7 @@
#![allow(unknown_lints, missing_docs)]
use std::collections::HashSet;
use std::fmt;
#[cfg(feature = "dss")]
use dss::ss1;
@ -125,7 +126,7 @@ error_chain! {
InconsistentSecretLengths(id: u8, slen_: usize, ids: Vec<u8>, slen: usize) {
description("The shares are incompatible with each other because they do not all have the same secret length.")
display("The share identifier {} had secret length {}, while the secret length {} was found for share identifier(s): {:?}.", id, slen_, slen, ids)
display("The share identifier {} had secret length {}, while the secret length {} was found for share identifier(s): {}.", id, slen_, slen, no_more_than_five(ids))
}
InconsistentShares {
@ -135,7 +136,7 @@ error_chain! {
InconsistentThresholds(id: u8, k_: u8, ids: Vec<u8>, k: u8) {
description("The shares are incompatible with each other because they do not all have the same threshold.")
display("The share identifier {} had k = {}, while k = {} was found for share identifier(s): {:?}.", id, k_, k, ids)
display("The share identifier {} had k = {}, while k = {} was found for share identifier(s): {}.", id, k_, k, no_more_than_five(ids))
}
}
@ -145,3 +146,19 @@ error_chain! {
IntegerParsingError(::std::num::ParseIntError);
}
}
/// Takes a `Vec<T>` and formats it like the normal `fmt::Debug` implementation, unless it has more
//than five elements, in which case the rest are replaced by ellipsis.
fn no_more_than_five<T: fmt::Debug + fmt::Display>(vec: &Vec<T>) -> String {
let len = vec.len();
if len > 5 {
let mut string = String::from("[");
for item in vec.iter().take(5) {
string += &format!("{}, ", item);
}
string.push_str("...]");
string
} else {
format!("{:?}", vec)
}
}