Established length-based strings

include/lenstr.h

@@ -0,0 +1,22 @@
+#ifndef LENSTR_H
+#define LENSTR_H
+/* Length-based strings
+ * and methods to go with them. */
+
+#define PrintStr(str) printf("%.*s\n", str.length, str.chars)
+#define StrLit(s) (string) {s, sizeof(s)-1}
+
+typedef struct {
+    char *chars;
+    size_t length;
+} string;
+
+string CStyleToLengthString_Assign(char *cstr); // StrLit(s) macro but in function form.
+string CStyleToLengthString_Copy(char *cstr);
+
+string StringCopy(string str);
+
+string StringSlice_Index(string str, size_t starti, size_t endi);
+string StringSlice_Length(string str, size_t starti, size_t length);
+
+#endif // LENSTR_H