1 files changed, 64 insertions, 0 deletions
diff --git a/src/util.c b/src/util.c
new file mode 100644
index 0000000..44046f9
--- /dev/null
+++ b/src/util.c
@@ -0,0 +1,64 @@
+/*
+  ihex
+  Copyright (C) 2025 Thomas Albers Raviola <thomas@thomaslabs.org>
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include <errno.h>
+
+void
+die(const char *current_file, const char *fmt, ...)
+{
+	va_list ap;
+	int saved_errno = errno;
+
+	if (current_file)
+		fprintf(stderr, "File %s: ", current_file);
+
+	va_start(ap, fmt);
+	if (fmt)
+		vfprintf(stderr, fmt, ap);
+	va_end(ap);
+
+	if (errno)
+		fprintf(stderr, "  %s\n", strerror(saved_errno));
+
+	exit(EXIT_FAILURE);
+}
+
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+	void *p;
+
+	if (!(p = calloc(nmemb, size)))
+		die(NULL, "Could not allocate memory!\n");
+
+	return p;
+}
+
+void *
+erealloc(void *ptr, size_t size)
+{
+	if (!(ptr = realloc(ptr, size)))
+		die(NULL, "Could not reallocate memory!\n");
+
+	return ptr;
+}