This file is indexed.

/usr/share/slib/getparam.scm is in slib 3b1-3.1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
;;; "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 warranty 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)
(require 'parameters)
(require 'rev4-optional-procedures)	; string-copy
(require-if 'compiling 'printf)
(require-if 'compiling 'common-list-functions)

;;@code{(require 'getopt-parameters)}
;;@ftindex getopt-parameters

;;@args optnames arities types aliases desc @dots{}
;;Returns @var{*argv*} converted to a parameter-list.  @var{optnames} are
;;the parameter-names.  @var{arities} and @var{types} are lists of symbols
;;corresponding to @var{optnames}.
;;
;;@var{aliases} is a list of lists of strings or integers paired with
;;elements of @var{optnames}.  Each one-character string will be treated
;;as a single @samp{-} option by @code{getopt}.  Longer strings will be
;;treated as long-named options (@pxref{Getopt, getopt--}).
;;
;;If the @var{aliases} association list has only strings as its
;;@code{car}s, then all the option-arguments after an option (and before
;;the next option) are adjoined to that option.
;;
;;If the @var{aliases} association list has integers, then each (string)
;;option will take at most one option-argument.  Unoptioned arguments are
;;collected in a list.  A @samp{-1} alias will take the last argument in
;;this list; @samp{+1} will take the first argument in the list.  The
;;aliases -2 then +2; -3 then +3; @dots{} are tried so long as a positive
;;or negative consecutive alias is found and arguments remain in the list.
;;Finally a @samp{0} alias, if found, absorbs any remaining arguments.
;;
;;In all cases, if unclaimed arguments remain after processing, a warning
;;is signaled and #f is returned.
(define (getopt->parameter-list 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))
	     (getopt-barf "%s: Unclaimed argument '%s'"
			  progname (car 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=? #\space (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-- optstring)))
	(case opt
	  ((#\: #\?)
	   (getopt-barf (case opt
			  ((#\:) "%s: argument missing after '-%c'")
			  ((#\?) "%s: unrecognized option '-%c'"))
			progname
			getopt:opt)
	   (apply parameter-list->getopt-usage
		  progname optnames arities types aliases description))
	  ((#f)
	   (cond ((and (< *optind* (length *argv*))
		       (string=? "-" (list-ref *argv* *optind*)))
		  (set! *optind* (+ 1 *optind*))
		  (finish))
		 ((< *optind* (length *argv*))
		  (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)
	       (getopt-barf "%s: '--%s' option not recognized" progname 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
	       ;;(getopt-barf "%s: '--%s' option expects '='" progname opt)
	       ;;(apply parameter-list->getopt-usage progname optnames arities types aliases description)
	       (set! curopt topt) (loop))))))))))

(define (getopt-barf . args)
  (require 'printf)
  (apply fprintf (current-error-port) args)
  (newline (current-error-port)))

(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)

;;@args optnames positions arities types defaulters checks aliases desc @dots{}
;;Like @code{getopt->parameter-list}, but converts @var{*argv*} to an
;;argument-list as specified by @var{optnames}, @var{positions},
;;@var{arities}, @var{types}, @var{defaulters}, @var{checks}, and
;;@var{aliases}.  If the options supplied violate the @var{arities} or
;;@var{checks} constraints, then a warning is signaled and #f is returned.
(define (getopt->arglist optnames positions
			 arities types defaulters checks aliases . description)
  (define progname (list-ref *argv* (+ -1 *optind*)))
  (let* ((params (apply getopt->parameter-list
			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))))

;;@noindent
;;These @code{getopt} functions can be used with SLIB relational
;;databases.  For an example, @xref{Using Databases, make-command-server}.
;;
;;@noindent
;;If errors are encountered while processing options, directions for using
;;the options (and argument strings @var{desc} @dots{}) are printed to
;;@code{current-error-port}.
;;
;;@example
;;(begin
;;  (set! *optind* 1)
;;  (set! *argv* '("cmd" "-?")
;;  (getopt->parameter-list
;;   '(flag number symbols symbols string flag2 flag3 num2 num3)
;;   '(boolean optional nary1 nary single boolean boolean nary nary)
;;   '(boolean integer symbol symbol string boolean boolean integer integer)
;;   '(("flag" flag)
;;     ("f" flag)
;;     ("Flag" flag2)
;;     ("B" flag3)
;;     ("optional" number)
;;     ("o" number)
;;     ("nary1" symbols)
;;     ("N" symbols)
;;     ("nary" symbols)
;;     ("n" symbols)
;;     ("single" string)
;;     ("s" string)
;;     ("a" num2)
;;     ("Abs" num3))))
;;@print{}
;;Usage: cmd [OPTION ARGUMENT ...] ...
;;
;;  -f, --flag
;;  -o, --optional=<number>
;;  -n, --nary=<symbols> ...
;;  -N, --nary1=<symbols> ...
;;  -s, --single=<string>
;;      --Flag
;;  -B
;;  -a        <num2> ...
;;      --Abs=<num3> ...
;;
;;ERROR: getopt->parameter-list "unrecognized option" "-?"
;;@end example