From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Sat, 18 May 2024 04:54:49 +0000 (-0700)
Subject: Optimized string creation with ASCII input.
X-Git-Tag: 0.8.5~31
X-Git-Url: http://git.kaiwu.me/sitemap.xml?a=commitdiff_plain;h=de552ba66e2851cbe57f32f7c47a38460290a6d5;p=njs.git

Optimized string creation with ASCII input.
---

diff --git a/src/njs_string.c b/src/njs_string.c
index e7e3893c..2549491a 100644
--- a/src/njs_string.c
+++ b/src/njs_string.c
@@ -130,8 +130,20 @@ njs_int_t
 njs_string_create(njs_vm_t *vm, njs_value_t *value, const char *src,
     size_t size)
 {
+    u_char     *p, *p_end;
     njs_str_t  str;
 
+    p = (u_char *) src;
+    p_end = p + size;
+
+    while (p < p_end && *p < 0x80) {
+          p++;
+    }
+
+    if (p == p_end) {
+        return njs_string_new(vm, value, (u_char *) src, size, size);
+    }
+
     str.start = (u_char *) src;
     str.length = size;