From 314508a159c6ee1309b577f55fd0e2d2129d3a82 Mon Sep 17 00:00:00 2001
From: NishiOwO <nishi@nishi.boats>
Date: Mon, 9 Mar 2026 01:01:47 +0900
Subject: [PATCH] add gif

---
 src/util.c | 43 ++++++++++++++++++++++++++-----------------
 1 file changed, 26 insertions(+), 17 deletions(-)

diff --git a/src/util.c b/src/util.c
index 60caa44..04570c8 100644
--- a/src/util.c
+++ b/src/util.c
@@ -43,6 +43,9 @@ char* u_http_path(const char* top, const char* path) {
 	return u_strvacat(top, "build/", path, NULL); /* otherwise, concat */
 }
 
+/* reason why this exists, is because IE6 has bugs with PNG transparency
+ * and script i wrote, needs image size or it (sometimes) breaaks how it's shown.
+ */
 int u_image_size(const char* top, const char* path, char* (*path_func)(const char* top, const char* path), int* w, int* h) {
 	char* p;
 	int   ch;
@@ -59,24 +62,12 @@ int u_image_size(const char* top, const char* path, char* (*path_func)(const cha
 	if((f = fopen(p, "rb")) != NULL) {
 		unsigned char buffer[512];
 		unsigned char png_sig[16] = {
-		    0x89,
-		    0x50,
-		    0x4e,
-		    0x47,
-		    0x0d,
-		    0x0a,
-		    0x1a,
-		    0x0a,
-		    /**/
-		    0x00,
-		    0x00,
-		    0x00,
-		    0x0d,
-		    0x49,
-		    0x48,
-		    0x44,
-		    0x52};
+		    0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a,
+		    0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52};
+		unsigned char gif_sig[6] = {
+		    0x47, 0x49, 0x46, 0x38, 0x39, 0x61}; /* GIF89a */
 
+		fseek(f, 0, SEEK_SET);
 		if(fread(buffer, 1, 16, f) == 16 && memcmp(buffer, png_sig, 16) == 0 && fread(buffer, 1, 13, f) == 13) {
 			int i;
 
@@ -94,6 +85,24 @@ int u_image_size(const char* top, const char* path, char* (*path_func)(const cha
 			st = 1;
 		}
 
+		fseek(f, 0, SEEK_SET);
+		if(fread(buffer, 1, 6, f) == 6 && memcmp(buffer, gif_sig, 6) == 0 && fread(buffer, 1, 4, f) == 4) {
+			int i;
+
+			*w = 0;
+			*h = 0;
+
+			for(i = 0; i < 2; i++) {
+				*w = (*w) << 8;
+				*w |= buffer[1 - i + 0];
+
+				*h = (*h) << 8;
+				*h |= buffer[1 - i + 2];
+			}
+
+			st = 1;
+		}
+
 		fclose(f);
 	}