From ae2dbec59a5d161af102be4a88c77bd21f076a26 Mon Sep 17 00:00:00 2001
From: Kaile <i@kaile.io>
Date: Mon, 14 Nov 2022 21:00:49 +0800
Subject: [PATCH] Fix infinite `while` loop when buf size is less than `3`

---
 src/matchers/text.rs | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/matchers/text.rs b/src/matchers/text.rs
index 8f95fdd..60297f7 100644
--- a/src/matchers/text.rs
+++ b/src/matchers/text.rs
@@ -64,14 +64,12 @@ fn trim_start_whitespaces(mut buf: &[u8]) -> &[u8] {
 
 /// Strip BOM at the beginning of the buffer.
 fn trim_start_byte_order_marks(mut buf: &[u8]) -> &[u8] {
-    while !buf.is_empty() {
-        if buf.len() >= 3 {
-            match (buf[0], buf[1], buf[2]) {
-                (0xEF, 0xBB, 0xBF) => buf = &buf[3..], // UTF-8
-                (0xFE, 0xFF, _) => buf = &buf[2..],    // UTF-16 BE
-                (0xFF, 0xFE, _) => buf = &buf[2..],    // UTF-16 BE
-                _ => break,
-            }
+    while buf.len() >= 3 {
+        match (buf[0], buf[1], buf[2]) {
+            (0xEF, 0xBB, 0xBF) => buf = &buf[3..], // UTF-8
+            (0xFE, 0xFF, _) => buf = &buf[2..],    // UTF-16 BE
+            (0xFF, 0xFE, _) => buf = &buf[2..],    // UTF-16 BE
+            _ => break,
         }
     }
     buf