From 393db5da62dcabdf9e9913fbe154dc14018e3229 Mon Sep 17 00:00:00 2001
From: mos <mos@cyclic.zone>
Date: Fri, 1 Nov 2024 10:48:01 +0100
Subject: [PATCH] limit error printing

---
 bipc/src/lib.rs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/bipc/src/lib.rs b/bipc/src/lib.rs
index 9d118ef..a4728c4 100644
--- a/bipc/src/lib.rs
+++ b/bipc/src/lib.rs
@@ -2,6 +2,8 @@ use bip::bp;
 use std::fmt;
 use std::io::{BufRead, BufReader};
 
+const ERR_MAX: usize = 40;
+
 pub type Result<T> = std::result::Result<T, Error>;
 
 pub enum Error {
@@ -39,12 +41,21 @@ fn read_bip<R: BufRead>(buf: R) -> Result<Vec<bip::Node>> {
         .collect();
 
     let err_count = errors.iter().fold(0, |count, err| {
-        eprintln!("error: {err}");
+        if count < ERR_MAX {
+            eprintln!("error: {err}");
+        }
         count + 1
     });
 
     if err_count > 0 {
-        eprintln!("{err_count} error{}", if err_count == 1 { "" } else { "s" });
+        let count_fmt = format!("{err_count} error{}", if err_count == 1 { "" } else { "s" });
+
+        if err_count >= ERR_MAX {
+            eprintln!("{} ({} shown)", count_fmt, ERR_MAX);
+        } else {
+            eprintln!("{}", count_fmt);
+        }
+
         Err(Error::ReadError)
     } else {
         bip::Parser::new(&syms).parse().map_err(Error::ParseError)