From 3bcb9c7df47938b05dbf5ac86bc81633193c6b12 Mon Sep 17 00:00:00 2001
From: Steins7 <steinsset@gmail.com>
Date: Mon, 15 Apr 2024 17:17:23 +0200
Subject: [PATCH] Add error handling

---
 srv/format.c | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

diff --git a/srv/format.c b/srv/format.c
index 2694d02..f3bc2c1 100644
--- a/srv/format.c
+++ b/srv/format.c
@@ -81,27 +81,37 @@ static uint32_t render_format(FormatCallback callback, void* arg,
 		if (in_format) {
 			switch (*c) {
 				case '%':
-					callback('%', arg);
+					if (callback('%', arg)) return 1;
 					break;
 				case 'c':
-					callback((uint8_t)va_arg(va, uint32_t), arg);
+					if (callback((uint8_t)va_arg(va, uint32_t), arg)) {
+						return 1;
+					}
 					break;
 				case 's':
 					{
 						const char* str = va_arg(va, const char*);
 						for (const char* c2 = str; *c2 != '\0'; ++c2) {
-							callback(*c2, arg);
+							if (callback(*c2, arg)) return 1;
 						}
 					}
 					break;
 				case 'i':
-					render_signed(callback, arg, va_arg(va, int32_t), 10);
+					if (render_signed(callback, arg, va_arg(va, int32_t), 10)) {
+						return 1;
+					}
 					break;
 				case 'u':
-					render_unsigned(callback, arg, va_arg(va, uint32_t), 10);
+					if (render_unsigned(callback, arg,
+								va_arg(va, uint32_t), 10)) {
+						return 1;
+					}
 					break;
 				case 'x':
-					render_unsigned(callback, arg, va_arg(va, uint32_t), 16);
+					if (render_unsigned(callback, arg,
+								va_arg(va, uint32_t), 16)) {
+						return 1;
+					}
 					break;
 				default:
 					//TODO manage error
@@ -113,7 +123,7 @@ static uint32_t render_format(FormatCallback callback, void* arg,
 					in_format = true;
 					continue;
 				default:
-					callback(*c, arg);
+					if (callback(*c, arg)) return 1;
 					break;
 			}
 		}
@@ -154,9 +164,9 @@ static uint32_t render_unsigned(FormatCallback callback, void* arg,
 		}
 
 		if (digit < 10) {
-			callback('0' + digit, arg);
+			if (callback('0' + digit, arg)) return 1;
 		} else {
-			callback('A' + digit - 10, arg);
+			if (callback('A' + digit - 10, arg)) return 1;
 		}
 	}