RailsOnLisp/rol-log/log.lisp

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• Hash : 8dfae16d
  Author : Thomas de Grivel
  Date : 2017-06-21T11:33:23
  

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• log.lisp

• ;;
  ;;  LowH Triangle
  ;;
  ;;  Copyright 2014 LowH <code@lowh.net>
  ;;
  ;;  Permission to use, copy, modify, and distribute this software for any
  ;;  purpose with or without fee is hereby granted, provided that the above
  ;;  copyright notice and this permission notice appear in all copies.
  ;;
  ;;  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  ;;  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  ;;  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ;;  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  ;;  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ;;  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  ;;  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  ;;
  
  (in-package :cl-user)
  
  (defpackage :RoL-log
    (:nicknames :L>log)
    (:use :cl)
    (:export
     #:*log-output*
     #:log-msg
     #:with-logged-warnings))
  
  (in-package :RoL-log)
  
  (defvar *log-output* *error-output*)
  
  (defun log-msg (level fmt &rest args)
    (let ((*print-case* :upcase)
          (*print-pretty* nil))
      (format *log-output* "~&~A ~?~%" level fmt args)
      (force-output *log-output*)))
  
  (defmacro with-logged-warnings (&body body)
    `(handler-bind ((warning
                     (lambda (w)
                       (log-msg :warn "~A" w)
                       (muffle-warning w))))
       ,@body))
  

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