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; bugs:
;#16> (fmt "{x} x {")
;exception! <class 'NameError'> name 'ev' is not defined
(func .fmt-parse (str cur)
(branch
((eq? 0 (length str)) cur)
((eq? "{" (first str))
(block
(def tmp (.brace-parse (rest str) ""))
(.fmt-parse (first tmp) (concat cur (first (rest tmp))))))
(#true (.fmt-parse (rest str) (concat cur (first str))))))
(func .brace-parse :[:string] (str :string cur :string)
; returns (remaining value)
(branch
((eq? "}" (first str))
(list (rest str) (->string (eval (first (parse-neb cur))))))
;(list (rest str) (eval (first (parse-neb cur)))))
((eq? "," (first str))
(.special-parse (rest str) "" (->string (eval (first (parse-neb cur))))))
;(.special-parse (rest str) "" (eval (first (parse-neb cur)))))
(#true
(.brace-parse (rest str) (concat cur (first str))))))
(func .fill-parse (str)
(if
(or
(eq? 0 (length str))
(in? (first str) (split "^<>")) ; these are aligns
(try
(block
(string->int (first str)) ; these are widths
#true)
#false))
(list str " ")
(list (rest str) (first str))))
(func .align-parse (str)
(if (in? (first str) (split "^<>"))
(list (rest str) (first str))
(list str ">")))
(func .number-parse (str cur)
(def ret
(try
(string->int (first str))
_panic_))
(if (eq? :int (typeof ret))
(.number-parse (rest str) (concat cur (first str)))
(branch
((eq? 0 (length cur)) (list str 0))
(#true (list str (string->int cur))))))
(func .special-parse (str cur val)
(if (eq? "}" (first str))
(block
; ,[[fill]align][width]
; where fill cannot be a number or ^<>
; there's gotta be a more elegant way to do this
(def fill-parse (.fill-parse cur))
(def fill (last fill-parse))
(def align-parse (.align-parse (first fill-parse)))
(def align (last align-parse))
(def width-parse (.number-parse (first align-parse) ""))
(def width (last width-parse))
(branch
((>= (length val) width)
(list (rest str) val))
((eq? "<" align) ; align left
(list (rest str) (concat val (.repeat (- width (length val)) fill))))
((eq? ">" align) ; align right
(list (rest str) (concat (.repeat (- width (length val)) fill) val)))
(#true ; align center
(block
(def half (/ (- width (length val)) 2))
(if (int? half)
(list (rest str) (concat (.repeat half fill) val (.repeat half fill)))
(list (rest str) (concat (.repeat (floor half) fill) val (.repeat (+ 1 (floor half)) fill))))))))
(.special-parse (rest str) (concat cur (first str)) val)))
(func .repeat (cnt) (.repeat cnt " "))
(func .repeat (cnt char)
(def out "")
(for-count cnt
(redef out (concat out char)))
out)
(func fmt :string (inp :string)
; { <neb code> , [[fill character][^<>]][:digits:]}
(.fmt-parse inp ""))
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