more lib fns

include/lib.h

@@ -31,6 +31,18 @@ extern void *memset(void *restrict dest, int c, unsigned long n);
  */
 extern int strncmp(const char *restrict s1, const char *restrict s2, unsigned long n);
 
+/**
+ * Copys the string pointed to by src , into a string at the buffer pointer to by dest.
+ * The dest buffer must be long enough to hold src.
+ */
+extern char *strcpy(char *restrict dest, const char *restrict src);
+
+/**
+ * Copys the string pointed to by src , into a string at the buffer pointer to by dest.
+ * The dest buffer must be long enough to hold src or size n.
+ */
+extern char *strncpy(char *restrict dest, const char *restrict src, unsigned long n);
+
 /**
  * @returns 1 if c is a space
  */

src/lib.c

@@ -43,6 +43,17 @@ int strncmp(const char *restrict lhs, const char *restrict rhs, unsigned long n)
 	return *l - *r;
 }
 
+char *strcpy(char *restrict dest, const char *restrict src) {
+	for(; (*dest = *src); dest++, src++);
+	return dest;
+}
+
+char *strncpy(char *restrict dest, const char *restrict src, unsigned long n) {
+	for(; (*dest = *src) && n; dest++, src++, n--);
+	memset(dest, 0, n);
+	return dest;
+}
+
 int isspace(int c) {
     switch (c) {
         case ' ':