1 files changed, 46 insertions, 0 deletions
diff --git a/users/sterni/clhs/clhs-lookup.lisp b/users/sterni/clhs/clhs-lookup.lisp
new file mode 100644
index 000000000000..0e61dd901f93
--- /dev/null
+++ b/users/sterni/clhs/clhs-lookup.lisp
@@ -0,0 +1,46 @@
+(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))))))