89 lines
2.3 KiB
Scheme
89 lines
2.3 KiB
Scheme
;;
|
|
;; logging.scm
|
|
;;
|
|
;; Universal logging module.
|
|
;;
|
|
;; ISC License
|
|
;;
|
|
;; Copyright 2023 Brmlab, z.s.
|
|
;; Dominik Pantůček <dominik.pantucek@trustica.cz>
|
|
;;
|
|
;; Permission to use, copy, modify, and/or 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.
|
|
;;
|
|
|
|
(declare (unit logging))
|
|
|
|
(module
|
|
logging
|
|
(
|
|
*log-file*
|
|
|
|
log-debug
|
|
log-info
|
|
log-warning
|
|
log-error
|
|
)
|
|
|
|
(import scheme
|
|
(chicken base)
|
|
(chicken format)
|
|
(chicken time posix)
|
|
util-string)
|
|
|
|
;; No logging by default
|
|
(define *log-file* (make-parameter #f))
|
|
|
|
;; Opened log file
|
|
(define log-file (make-parameter #f))
|
|
|
|
;; Ensures leading zeroes
|
|
(define (format-number2 n)
|
|
(format "~A~A"
|
|
(if (< n 10) "0" "")
|
|
n))
|
|
|
|
;; Current time for logging
|
|
(define (format-current-time)
|
|
(let ((ltime (seconds->local-time)))
|
|
(format "~A-~A-~A ~A:~A:~A"
|
|
(+ 1900 (vector-ref ltime 5))
|
|
(format-number2 (add1 (vector-ref ltime 4)))
|
|
(format-number2 (vector-ref ltime 3))
|
|
(format-number2 (vector-ref ltime 2))
|
|
(format-number2 (vector-ref ltime 1))
|
|
(format-number2 (vector-ref ltime 0)))))
|
|
|
|
;; Handles the actual logging
|
|
(define ((log-line level) fmt . args)
|
|
(when (or (*log-file*)
|
|
(log-file))
|
|
(when (not (log-file))
|
|
(log-file (open-output-file (*log-file*) #:append))
|
|
(log-info "Logging started"))
|
|
(display (format "~A [~A] ~A"
|
|
(format-current-time)
|
|
(string-upcase (symbol->string level))
|
|
(apply format fmt args))
|
|
(log-file))
|
|
(newline (log-file))
|
|
(flush-output (log-file))))
|
|
|
|
;; Specific log procedures
|
|
(define log-debug (log-line 'debug))
|
|
(define log-info (log-line 'info))
|
|
(define log-warning (log-line 'warning))
|
|
(define log-error (log-line 'error))
|
|
|
|
)
|