(in-package #:str)

(declaim (optimize (speed 3) (safety 0)))

(declaim (ftype (function ((or pathname string)) (values string &optional)) read-file))
(defun read-file (path)
  (with-open-file (file path)
    (let* ((size (file-length file))
           (buf (make-string size)))
      (read-sequence buf file)
      buf)))

(declaim (ftype (function (simple-string simple-string) (values (cons string) &optional)) split))
(defun split (input delimiter)
  (defun split-rec (result start)
    (let ((next (search delimiter input :start2 start)))
      (if next
        (split-rec (queue:add result (subseq input start next)) (min (+ (length delimiter) next)
                                                                     (length input)))
        (queue:add result (subseq input start next)))))
  (queue:to-list (split-rec (queue:new) 0)))

(declaim (ftype (function ((cons char)) (values simple-string) &optional)) from-list)
(defun from-list (lst)
  (let ((str (make-string (length lst)))
        (i 0))
    (dolist (item lst)
      (setf (char str i) item)
      (incf i))
    str))