1 files changed, 23 insertions, 0 deletions
diff --git a/str.c b/str.c
new file mode 100644
index 0000000..ac4fb26
--- /dev/null
+++ b/str.c
@@ -0,0 +1,23 @@
+/* 
+A better alternative to strncpy. dest is guaranteed to be a null-terminated string
+after this function is run.
+Returns the number of characters copied to dest, not including the null character.
+destsz must be greater than 0.
+*/
+size_t str_copy(char *dest, size_t destsz, const char *src) {
+	assert(destsz);
+	if (!*src) {
+		*dest = 0;
+		return 0;
+	}
+	for (size_t i = 0; i < destsz-1; i++) {
+		*dest = *src;
+		if (!*src) {
+			*dest = 0;
+			return i;
+		}
+		src++; dest++;
+	}
+	dest[destsz-1] = 0;
+	return destsz-1;
+}