From 7ea1cdb7d31f00024f5a1d124b42cd19a03b959a Mon Sep 17 00:00:00 2001
From: Nicholas <nbnoll@eml.cc>
Date: Wed, 10 Nov 2021 20:12:45 -0800
Subject: chore: libunicode -> libutf

---
 sys/libutf/findlast.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 sys/libutf/findlast.c

(limited to 'sys/libutf/findlast.c')

diff --git a/sys/libutf/findlast.c b/sys/libutf/findlast.c
new file mode 100644
index 0000000..ab25ab2
--- /dev/null
+++ b/sys/libutf/findlast.c
@@ -0,0 +1,32 @@
+#include "internal.h"
+
+byte*
+utf8·findlast(byte* s, rune c)
+{
+    long c1;
+    rune r;
+    byte *l;
+
+    if(c < Tx)
+        return strrchr(s, c);
+
+    l = nil;
+    for(;;){
+        c1 = *(ubyte*)s;
+        if(c1 < Tx){
+            if(c1 == 0) return l;
+            if(c1 == c) l = s;
+            s++;
+            continue;
+        }
+
+        c1 = utf8·decode(s, &r);
+
+        if(r == c)
+            l = s;
+
+        s += c1;
+    }
+
+    return nil;
+}
-- 
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