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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)] #![allow(unknown_lints, missing_docs)]
use std::collections::HashSet; use std::collections::HashSet;
use std::fmt;
#[cfg(feature = "dss")] #[cfg(feature = "dss")]
use dss::ss1; use dss::ss1;
@ -125,7 +126,7 @@ error_chain! {
InconsistentSecretLengths(id: u8, slen_: usize, ids: Vec<u8>, slen: usize) { 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.") 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 { InconsistentShares {
@ -135,7 +136,7 @@ error_chain! {
InconsistentThresholds(id: u8, k_: u8, ids: Vec<u8>, k: u8) { 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.") 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); 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)
}
}