From 03c95e6b8fbb2387edea2aec01eaa8c3560661b3 Mon Sep 17 00:00:00 2001
From: oudecheng <13802883547@139.com>
Date: Tue, 12 May 2026 18:03:49 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=B7=BB=E5=8A=A0=E6=96=87=E4=BB=B6?=
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---
 src/tools/file_read.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tools/file_read.rs b/src/tools/file_read.rs
index c3e0baf..bca881c 100644
--- a/src/tools/file_read.rs
+++ b/src/tools/file_read.rs
@@ -179,6 +179,7 @@ impl Tool for FileReadTool {
 
                 // Truncate if too long
                 if result.len() > MAX_CHARS {
+                    let original_len = result.len();
                     let mut truncated_chars = 0;
                     let mut end_idx = 0;
                     for (i, line) in lines.iter().enumerate() {
@@ -190,9 +191,10 @@ impl Tool for FileReadTool {
                         end_idx = i + 1;
                     }
                     result = lines[..end_idx].join("\n");
+                    let truncated_amount = original_len - result.len();
                     result.push_str(&format!(
                         "\n\n... ({} chars truncated) ...",
-                        result.len() - MAX_CHARS
+                        truncated_amount
                     ));
                 }