tvl-depot/users/sterni/clhs-lookup/clhs-lookup.lisp

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Common Lisp
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(in-package :clhs-lookup)
(declaim (optimize (safety 3)))
(defun find-symbols-paths (syms clhs)
"Find pathnames to HyperSpec files describing the listed
symbol names (as strings). Paths are returned in the order
of the symbols given with missing entries removed."
(check-type syms list)
(check-type clhs pathname)
(let* ((data-dir (merge-pathnames "HyperSpec/Data/" clhs))
(data (merge-pathnames "Map_Sym.txt" data-dir))
(found (make-hash-table :test #'equal))
(syms (mapcar #'string-upcase syms)))
(with-open-file (s data :direction :input)
(loop
with missing = syms
for symbol-line = (read-line s nil :eof)
for path-line = (read-line s nil :eof)
until (or (eq symbol-line :eof)
(eq path-line :eof)
(null missing))
for pos = (position symbol-line missing :test #'equal)
when pos
do (progn
(delete symbol-line missing)
(setf (gethash symbol-line found) path-line)))
; TODO(sterni): get rid of Data/../ in path
(mapcar
(lambda (x) (merge-pathnames x data-dir))
(remove nil
(mapcar (lambda (x) (gethash x found)) syms))))))
(defun main ()
(let* ((browser (or (uiop:getenvp "BROWSER") "xdg-open"))
(args (uiop:command-line-arguments))
(prin (member "--print" args :test #'equal))
(syms (remove-if (lambda (x) (eq (char x 0) #\-)) args))
(paths (find-symbols-paths syms *clhs-path*)))
(if (null paths)
(uiop:quit 1)
(dolist (p paths)
(if prin
(format t "~A~%" p)
(uiop:launch-program
(format nil "~A ~A" browser p)
:force-shell t))))))