From fc72ea11b7c3703fab19ba6ae6fd358851a8f467 Mon Sep 17 00:00:00 2001
From: Nathan Reiner <nathan@nathanreiner.xyz>
Date: Fri, 23 Jun 2023 09:39:46 +0200
Subject: fix settitle crash

---
 swt.c  | 31 ++++++++++++++++++++++++++++++-
 term.c |  8 --------
 term.h |  8 ++++++++
 3 files changed, 38 insertions(+), 9 deletions(-)

diff --git a/swt.c b/swt.c
index e4aacfd..6174275 100644
--- a/swt.c
+++ b/swt.c
@@ -13,6 +13,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <locale.h>
+#include <ctype.h>
 
 char *argv0;
 #include "wayland.h"
@@ -100,6 +101,7 @@ static void data_device_data_offer(void *data, struct wl_data_device *data_devic
 static void data_source_send(void *data, struct wl_data_source *source, const char *mime_type, int fd);
 static void data_source_cancelled(void *data, struct wl_data_source *source);
 static void dummy() {}
+static int  is_valid_title(const char *title);
 
 
 /* global variables */
@@ -413,9 +415,36 @@ wseticontitle(char *title) {
 }
 
 
+int
+is_valid_title(const char *title)
+{
+	int i = 0;
+
+	if (!title)
+		return 0;
+
+	fprintf(stderr, "HERE\n");
+	for (; i < STR_BUF_SIZ; ++i) {
+		if (title[i] == 0) {
+			return 1;
+		}
+	}
+
+	fprintf(stderr, "FALSE\n");
+
+	return 0;
+}
+
+
 void
 wsettitle(char *title) {
-	xdg_toplevel_set_title(win.surface.toplevel, title);
+	if (is_valid_title(title)) {
+		fprintf(stderr, "TRUE\n");
+		xdg_toplevel_set_title(win.surface.toplevel, title);
+		fprintf(stderr, "SET TITLE\n");
+	} else {
+		xdg_toplevel_set_title(win.surface.toplevel, "swt");
+	}
 }
 
 
diff --git a/term.c b/term.c
index f35756a..cd0bd30 100644
--- a/term.c
+++ b/term.c
@@ -28,14 +28,6 @@
  #include <libutil.h>
 #endif
 
-/* Arbitrary sizes */
-#define UTF_INVALID   0xFFFD
-#define UTF_SIZ       4
-#define ESC_BUF_SIZ   (128*UTF_SIZ)
-#define ESC_ARG_SIZ   16
-#define STR_BUF_SIZ   ESC_BUF_SIZ
-#define STR_ARG_SIZ   ESC_ARG_SIZ
-
 /* macros */
 #define IS_SET(flag)		((term.mode & (flag)) != 0)
 #define ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
diff --git a/term.h b/term.h
index fd3b0d8..4498c57 100644
--- a/term.h
+++ b/term.h
@@ -20,6 +20,14 @@
 #define TRUECOLOR(r,g,b)	(1 << 24 | (r) << 16 | (g) << 8 | (b))
 #define IS_TRUECOL(x)		(1 << 24 & (x))
 
+/* Arbitrary sizes */
+#define UTF_INVALID   0xFFFD
+#define UTF_SIZ       4
+#define ESC_BUF_SIZ   (128*UTF_SIZ)
+#define ESC_ARG_SIZ   16
+#define STR_BUF_SIZ   ESC_BUF_SIZ
+#define STR_ARG_SIZ   ESC_ARG_SIZ
+
 enum glyph_attribute {
 	ATTR_NULL       = 0,
 	ATTR_BOLD       = 1 << 0,
-- 
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