lib: Fix '%X' formatting

2026-10-27 23:15:27 +01:00
parent 74d53ca5dd
commit 254f005c4f
3 changed files with 15 additions and 2 deletions
@@ -234,6 +234,12 @@ check_fmt:
                lutoa(va_arg(args, uint64_t), number, 16);
                break;
            }
+            if (*fmt == 'X') {
+                for (char* c = number; *c; c++) {
+                    if (*c >= 'a' && *c <= 'f')
+                        *c -= 'a' - 'A';
+                }
+            }
 print_num:
            const char* digits = number;
            char sign = 0;
@@ -260,7 +266,7 @@ print_num:
            if (sign)
                callback(ctx, &sign, 1);
            if (write_prefix)
-                callback(ctx, "0x", 2);
+                callback(ctx, *fmt == 'X' ? "0X" : "0x", 2);
            print_pad(callback, ctx, '0', zeros);
            callback(ctx, digits, len);
            if (left_align)
@@ -285,7 +291,7 @@ print_num:
            callback(ctx, number, len);

            fmt++;
-            written += len;
+            written += offset + len;
            break;
        }
        // The number of characters written so far is stored in the pointed location.