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-rw-r--r--src/main.lisp24
1 files changed, 21 insertions, 3 deletions
diff --git a/src/main.lisp b/src/main.lisp
index 8d7db60..c7a2421 100644
--- a/src/main.lisp
+++ b/src/main.lisp
@@ -4,6 +4,12 @@
(:use :cl))
(in-package :oneliners.cli)
+;;; CLI OPTIONS
+
+;; (opts:define-opts
+;; (:name ))
+
+
;;; UTILITIES
(defun parent-process-name ()
@@ -14,19 +20,31 @@
(with-open-file (input ppidfile)
(read-line input)))))))
+(defmacro wait-until ((&key (timeout 1) (poll-every 0.01)) &body check)
+ "Run CHECK every POLL-EVERY seconds until either TIMEOUT seconds
+have passed or CHECK returns non-nil."
+ (let ((clockvar (gensym))
+ (var (gensym)))
+ `(loop
+ for ,clockvar from 0 by ,poll-every to ,timeout
+ for ,var = (progn ,@check)
+ when ,var
+ return ,var
+ do (sleep ,poll-every))))
+
(defun run-with-shell
(command
&key
(shell-name (parent-process-name))
- (await-output-p t)
+ (await-output-p 0.5)
(output-stream *standard-output*))
(let ((shell
(uiop:launch-program shell-name :input :stream :output :stream)))
(write-line command (uiop:process-info-input shell))
(finish-output (uiop:process-info-input shell))
(when await-output-p
- (loop until (listen (uiop:process-info-output shell)))
+ (wait-until (:timeout await-output-p)
+ (listen (uiop:process-alive-p shell)))
(loop while (listen (uiop:process-info-output shell))
do (princ (read-line (uiop:process-info-output shell)) output-stream)
(terpri output-stream)))))
-