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;;; "getparam.scm" convert getopt to passing parameters by name.
; Copyright 1995, 1996, 1997, 2001 Aubrey Jaffer
;
;Permission to copy this software, to modify it, to redistribute it,
;to distribute modified versions, and to use it for any purpose is
;granted, subject to the following restrictions and understandings.
;
;1. Any copy made of this software must include this copyright notice
;in full.
;
;2. I have made no warrantee or representation that the operation of
;this software will be error-free, and I am under no obligation to
;provide any services, by way of maintenance, update, or otherwise.
;
;3. In conjunction with products arising from the use of this
;material, there shall be no use of my name in any advertising,
;promotional, or sales literature without prior written consent in
;each case.
(require 'getopt)
(require 'coerce)
(define (getopt->parameter-list argc argv optnames arities types aliases
. description)
(define (can-take-arg? opt)
(not (eq? 'boolean (list-ref arities (position opt optnames)))))
(let ((progname (list-ref argv (+ -1 *optind*)))
(optlist '())
(long-opt-list '())
(optstring #f)
(pos-args '())
(parameter-list (make-parameter-list optnames))
(curopt '*unclaimed-argument*)
(positional? (assv 0 aliases))
(unclaimeds '()))
(define (adjoin-val val curopt)
(define ntyp (list-ref types (position curopt optnames)))
(adjoin-parameters! parameter-list
(list curopt (case ntyp
((expression) val)
(else (coerce val ntyp))))))
(define (finish)
(cond
(positional?
(set! unclaimeds (reverse unclaimeds))
(do ((idx 2 (+ 1 idx))
(alias+ (assv 1 aliases) (assv idx aliases))
(alias- (assv -1 aliases) (assv (- idx) aliases)))
((or (not (or alias+ alias-)) (null? unclaimeds)))
(set! unclaimeds (reverse unclaimeds))
(cond (alias-
(set! curopt (cadr alias-))
(adjoin-val (car unclaimeds) curopt)
(set! unclaimeds (cdr unclaimeds))))
(set! unclaimeds (reverse unclaimeds))
(cond ((and alias+ (not (null? unclaimeds)))
(set! curopt (cadr alias+))
(adjoin-val (car unclaimeds) curopt)
(set! unclaimeds (cdr unclaimeds)))))
(let ((alias (assv '0 aliases)))
(cond (alias
(set! curopt (cadr alias))
(for-each (lambda (unc) (adjoin-val unc curopt)) unclaimeds)
(set! unclaimeds '()))))))
(cond ((not (null? unclaimeds))
(slib:warn 'getopt->parameter-list 'arguments 'unclaimed unclaimeds)
(apply parameter-list->getopt-usage
progname optnames arities types aliases description))
(else parameter-list)))
(set! aliases
(map (lambda (alias)
(cond ((string? (car alias))
(let ((str (string-copy (car alias))))
(do ((i (+ -1 (string-length str)) (+ -1 i)))
((negative? i) (cons str (cdr alias)))
(cond ((char=? #\ (string-ref str i))
(string-set! str i #\-))))))
((number? (car alias))
(set! positional? (car alias))
alias)
(else alias)))
aliases))
(for-each
(lambda (alias)
(define opt (car alias))
(cond ((number? opt) (set! pos-args (cons opt pos-args)))
((not (string? opt)))
((< 1 (string-length opt))
(set! long-opt-list (cons opt long-opt-list)))
((not (= 1 (string-length opt))))
((can-take-arg? (cadr alias))
(set! optlist (cons (string-ref opt 0) (cons #\: optlist))))
(else (set! optlist (cons (string-ref opt 0) optlist)))))
aliases)
(set! optstring (list->string (cons #\: optlist)))
(let loop ()
(let ((opt (getopt-- argc argv optstring)))
(case opt
((#\: #\?)
(slib:warn 'getopt->parameter-list
(case opt
((#\:) "argument missing after")
((#\?) "unrecognized option"))
(string #\- getopt:opt))
(apply parameter-list->getopt-usage
progname optnames arities types aliases description))
((#f)
(cond ((and (< *optind* argc)
(string=? "-" (list-ref argv *optind*)))
(set! *optind* (+ 1 *optind*))
(finish))
((< *optind* argc)
(let ((topt (assoc curopt aliases)))
(if topt (set! curopt (cadr topt)))
(cond
((and positional? (not topt))
(set! unclaimeds
(cons (list-ref argv *optind*) unclaimeds))
(set! *optind* (+ 1 *optind*)) (loop))
((and (member curopt optnames)
(adjoin-val (list-ref argv *optind*) curopt))
(set! *optind* (+ 1 *optind*)) (loop))
(else (slib:error 'getopt->parameter-list curopt
(list-ref argv *optind*)
'not 'supported)))))
(else (finish))))
(else
(cond ((char? opt) (set! opt (string opt))))
(let ((topt (assoc opt aliases)))
(if topt (set! topt (cadr topt)))
(cond
((not topt)
(slib:warn "Option not recognized -" opt)
(apply parameter-list->getopt-usage
progname optnames arities types aliases description))
((not (can-take-arg? topt))
(adjoin-parameters! parameter-list (list topt #t))
(loop))
(*optarg* (set! curopt topt) (adjoin-val *optarg* curopt) (loop))
(else
;;; (slib:warn 'getopt->parameter-list "= missing for option--" opt)
(set! curopt topt) (loop))))))))))
(define (parameter-list->getopt-usage comname optnames arities types aliases
. description)
(require 'printf)
(require 'common-list-functions)
(let ((aliast (map list optnames))
(strlen=1? (lambda (s) (= 1 (string-length s))))
(cep (current-error-port)))
(for-each (lambda (alias)
(let ((apr (assq (cadr alias) aliast)))
(set-cdr! apr (cons (car alias) (cdr apr)))))
aliases)
(fprintf cep "Usage: %s [OPTION ARGUMENT ...] ..." comname)
(do ((pos+ '()) (pos- '())
(idx 2 (+ 1 idx))
(alias+ (assv 1 aliases) (assv idx aliases))
(alias- (assv -1 aliases) (assv (- idx) aliases)))
((not (or alias+ alias-))
(for-each (lambda (alias) (fprintf cep " <%s>" (cadr alias)))
(reverse pos+))
(let ((alias (assv 0 aliases)))
(if alias (fprintf cep " <%s> ..." (cadr alias))))
(for-each (lambda (alias) (fprintf cep " <%s>" (cadr alias)))
pos-))
(cond (alias- (set! pos- (cons alias- pos-))))
(cond (alias+ (set! pos+ (cons alias+ pos+)))))
(fprintf cep "\\n\\n")
(for-each
(lambda (optname arity aliat)
(let loop ((initials (remove-if-not strlen=1? (remove-if number? (cdr aliat))))
(longname (remove-if strlen=1? (remove-if number? (cdr aliat)))))
(cond ((and (null? initials) (null? longname)))
(else (fprintf cep
(case arity
((boolean) " %3s %s\\n")
(else " %3s %s<%s> %s\\n"))
(if (null? initials)
""
(string-append "-" (car initials)
(if (null? longname) " " ",")))
(if (null? longname)
" "
(string-append "--" (car longname)
(case arity
((boolean) " ")
(else "="))))
(case arity
((boolean) "")
(else optname))
(case arity
((nary nary1) "...")
(else "")))
(loop (if (null? initials) '() (cdr initials))
(if (null? longname) '() (cdr longname)))))))
optnames arities aliast)
(for-each (lambda (desc) (fprintf cep " %s\\n" desc)) description))
#f)
(define (getopt->arglist argc argv optnames positions
arities types defaulters checks aliases . description)
(define progname (list-ref argv (+ -1 *optind*)))
(let* ((params (apply getopt->parameter-list
argc argv optnames arities types aliases description))
(fparams (and params (fill-empty-parameters defaulters params))))
(cond ((and (list? params)
(check-parameters checks fparams)
(parameter-list->arglist positions arities fparams)))
(params (apply parameter-list->getopt-usage
progname optnames arities types aliases description))
(else #f))))
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