From 833978f41433c526b9614f8c772896a0bd6e31cc Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@mirocom.org>
Date: Sat, 23 May 2026 11:35:31 -0400
Subject: core: tokbuf: Dynamically expand token buffer

Signed-off-by: Ian Moffett <ian@mirocom.org>
---
 core/tokbuf.c | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

(limited to 'core/tokbuf.c')

diff --git a/core/tokbuf.c b/core/tokbuf.c
index 05e8755..6df5686 100644
--- a/core/tokbuf.c
+++ b/core/tokbuf.c
@@ -5,6 +5,7 @@
 
 #include <sys/types.h>
 #include <stdint.h>
+#include <stdlib.h>
 #include <stddef.h>
 #include <string.h>
 #include <errno.h>
@@ -18,20 +19,33 @@ tokbuf_init(struct tokbuf *tokbuf)
         return -1;
     }
 
-    memset(tokbuf->buf, 0, sizeof(tokbuf->buf));
     tokbuf->head = 0;
+    tokbuf->cap = TOKBUF_CAP;
+    tokbuf->buf = malloc(sizeof(struct token) * TOKBUF_CAP);
+    if (tokbuf->buf == NULL) {
+        return -1;
+    }
+
     return 0;
 }
 
 int
 tokbuf_push(struct tokbuf *tokbuf, struct token *tok)
 {
+    void *p;
+
     if (tokbuf == NULL || tok == NULL) {
         return -1;
     }
 
-    if ((tokbuf->head++) >= TOKBUF_CAP - 1) {
-        tokbuf->head = 0;
+    if ((tokbuf->head++) >= tokbuf->cap - 1) {
+        tokbuf->cap += 8;
+        p = realloc(tokbuf->buf, sizeof(struct token) * tokbuf->cap);
+        if (tokbuf->buf == NULL) {
+            return -1;
+        }
+
+        tokbuf->buf = p;
     }
 
     tokbuf->buf[tokbuf->head] = *tok;
@@ -60,3 +74,16 @@ tokbuf_noff(struct tokbuf *tokbuf, size_t noff, struct token *res)
     *res = tokbuf->buf[off];
     return 0;
 }
+
+void
+tokbuf_destroy(struct tokbuf *tokbuf)
+{
+    if (tokbuf == NULL) {
+        return;
+    }
+
+    if (tokbuf->buf != NULL) {
+        free(tokbuf->buf);
+        tokbuf->buf = NULL;
+    }
+}
-- 
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