cffi-posix/cffi-errno/cffi-errno.lisp

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• Hash : 46853c4b
  Author : Thomas de Grivel
  Date : 2017-06-27T18:03:21
  

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• cffi-errno.lisp

• ;;
  ;;  cffi-errno  -  Common Lisp wrapper for Unix error codes
  ;;
  ;;  Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
  ;;
  ;;  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 :cffi-errno)
  
  (defcfun ("strerror" c-strerror) :string
    (errnum :int))
  
  (defun strerror (errnum)
    (c-strerror errnum))
  
  (define-condition errno-error (error)
    ((message :initarg :message
              :reader errno-error-message)
     (errno :initarg :errno
            :reader errno-error-errno)
     (strerror :initarg :strerror
               :reader errno-error-strerror))
    (:report (lambda (condition stream)
               (format stream "~A: ~D ~A"
                       (errno-error-message condition)
                       (errno-error-errno condition)
                       (errno-error-strerror condition)))))
  
  (defun error-errno (message)
    (error 'errno-error
           :message message
           :errno errno
           :strerror (strerror errno)))
  

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