commit f133f7a

Add `utils`, implement strdup in `utils`

 1@@ -0,0 +1,19 @@
 2+#include <stdlib.h>
 3+#include <string.h>
 4+
 5+#include "utils.h"
 6+
 7+char* strdup(const char* src)
 8+{
 9+	if (src == NULL)
10+		return NULL;
11+
12+	size_t len = strlen(src);
13+	char* dst = malloc(len + 1);
14+	if (dst == NULL)
15+		return NULL;
16+
17+	memcpy(dst, src, len + 1);
18+	return dst;
19+}
20+

 1@@ -0,0 +1,11 @@
 2+#ifndef UTIL_H
 3+#define UTIL_H
 4+
 5+/* duplicate a string. returns pointer to address of
 6+   newly allocated string buffer. if NULL, allocation
 7+   failed or src is NULL
 8+   note: you must free this newly allocated string */
 9+char* strdup(const char* src);
10+
11+#endif /* UTIL_H */
12+