;;======================================================================
;; Copyright 2006-2012, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
;;======================================================================
;; (use trace)
;; Some of these routines use:
;;
;; http://www.cs.toronto.edu/~gfb/scheme/simple-macros.html
;;
;; Syntax for defining macros in a simple style similar to function definiton,
;; when there is a single pattern for the argument list and there are no keywords.
;;
;; (define-simple-syntax (name arg ...) body ...)
;;
(define-syntax define-simple-syntax
(syntax-rules ()
((_ (name arg ...) body ...)
(define-syntax name (syntax-rules () ((name arg ...) (begin body ...)))))))
(define-syntax common:handle-exceptions
(syntax-rules ()
((_ exn-in errstmt ...)(handle-exceptions exn-in errstmt ...))))
(define (debug:calc-verbosity vstr)
(cond
((number? vstr) vstr)
((not (string? vstr)) 1)
;; ((string-match "^\\s*$" vstr) 1)
(vstr (let ((debugvals (filter number? (map string->number (string-split vstr ",")))))
(cond
((> (length debugvals) 1) debugvals)
((> (length debugvals) 0)(car debugvals))
(else 1))))
((args:get-arg "-v") 2)
((args:get-arg "-q") 0)
(else 1)))
;; check verbosity, #t is ok
(define (debug:check-verbosity verbosity vstr)
(if (not (or (number? verbosity)
(list? verbosity)))
(begin
(print "ERROR: Invalid debug value \"" vstr "\"")
#f)
#t))
(define (debug:debug-mode n)
(or (and (number? *verbosity*)
(<= n *verbosity*))
(and (list? *verbosity*)
(member n *verbosity*))))
(define (debug:setup)
(let ((debugstr (or (args:get-arg "-debug")
(getenv "MT_DEBUG_MODE"))))
(set! *verbosity* (debug:calc-verbosity debugstr))
(debug:check-verbosity *verbosity* debugstr)
;; if we were handed a bad verbosity rule then we will override it with 1 and continue
(if (not *verbosity*)(set! *verbosity* 1))
(if (or (args:get-arg "-debug")
(not (getenv "MT_DEBUG_MODE")))
(setenv "MT_DEBUG_MODE" (if (list? *verbosity*)
(string-intersperse (map conc *verbosity*) ",")
(conc *verbosity*))))))
(define (debug:print n . params)
(if (debug:debug-mode n)
(with-output-to-port (current-error-port)
(lambda ()
(if *logging*
(db:log-event (apply conc params))
;; (apply print "pid:" (current-process-id) " " params)
(apply print params)
)))))
(define (debug:print-info n . params)
(if (debug:debug-mode n)
(with-output-to-port (current-error-port)
(lambda ()
(let ((res (format#format #f "INFO: (~2d) ~a" n (apply conc params))))
(if *logging*
(db:log-event res)
;; (apply print "pid:" (current-process-id) " " "INFO: (" n ") " params) ;; res)
(apply print "INFO: (" n ") " params) ;; res)
))))))
;; if a value is printable (i.e. string or number) return the value
;; else return an empty string
(define-inline (printable val)
(if (or (number? val)(string? val)) val ""))