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70f21349bd
* src/cuirass/logging.scm: New file. * Makefile.am (dist_pkgmodule_DATA): Add it. * src/cuirass/base.scm (handle-build-event): Use 'log-message' instead of 'log'.
48 lines
1.6 KiB
Scheme
48 lines
1.6 KiB
Scheme
;;; logging.scm -- Event logging.
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;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of Cuirass.
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;;;
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;;; Cuirass is free software: you can redistribute it and/or modify
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;;; it under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation, either version 3 of the License, or
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;;; (at your option) any later version.
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;;;
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;;; Cuirass is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with Cuirass. If not, see <http://www.gnu.org/licenses/>.
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(define-module (cuirass logging)
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#:use-module (srfi srfi-19)
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#:use-module (ice-9 format)
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#:export (current-logging-port
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current-logging-procedure
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log-message))
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(define current-logging-port
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(make-parameter (current-error-port)))
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(define (log-to-port port str)
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(define now
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(current-time time-utc))
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(define date
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(date->string (time-utc->date now) "~5"))
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(display (string-append date " " str "\n")
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port))
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(define current-logging-procedure
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;; The logging procedure. This could be 'syslog', for instance.
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(make-parameter (lambda (str)
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(log-to-port (current-logging-port) str))))
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(define-syntax-rule (log-message fmt args ...)
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"Log the given message as one line."
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;; Note: Use '@' to make sure -Wformat detects this use of 'format'.
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((current-logging-procedure)
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((@ (ice-9 format) format) #f fmt args ...)))
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