rng-xsd.el 28.2 KB
Newer Older
Mark A. Hershberger's avatar
Mark A. Hershberger committed
1 2
;;; rng-xsd.el --- W3C XML Schema datatypes library for RELAX NG

3
;; Copyright (C) 2003, 2007-2011 Free Software Foundation, Inc.
Mark A. Hershberger's avatar
Mark A. Hershberger committed
4 5 6 7

;; Author: James Clark
;; Keywords: XML, RelaxNG

Glenn Morris's avatar
Glenn Morris committed
8
;; This file is part of GNU Emacs.
Mark A. Hershberger's avatar
Mark A. Hershberger committed
9

10
;; GNU Emacs is free software: you can redistribute it and/or modify
Glenn Morris's avatar
Glenn Morris committed
11
;; it under the terms of the GNU General Public License as published by
12 13
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
Mark A. Hershberger's avatar
Mark A. Hershberger committed
14

Glenn Morris's avatar
Glenn Morris committed
15 16 17 18 19 20
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
21
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
Mark A. Hershberger's avatar
Mark A. Hershberger committed
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

;;; Commentary:

;; The main entry point is `rng-xsd-compile'. The validator
;; knows to use this for the datatype library with URI
;; http://www.w3.org/2001/XMLSchema-datatypes because it
;; is the value of the rng-dt-compile property on that URI
;; as a symbol.
;;
;; W3C XML Schema Datatypes are specified by
;;   http://www.w3.org/TR/xmlschema-2/
;; Guidelines for using them with RELAX NG are described in
;;   http://relaxng.org/xsd.html

;;; Code:

(require 'rng-dt)
(require 'rng-util)
(require 'xsd-regexp)

;;;###autoload
(put 'http://www.w3.org/2001/XMLSchema-datatypes
     'rng-dt-compile
     'rng-xsd-compile)

;;;###autoload
(defun rng-xsd-compile (name params)
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
  "Provides W3C XML Schema as a RELAX NG datatypes library.
NAME is a symbol giving the local name of the datatype.  PARAMS is a
list of pairs (PARAM-NAME . PARAM-VALUE) where PARAM-NAME is a symbol
giving the name of the parameter and PARAM-VALUE is a string giving
its value.  If NAME or PARAMS are invalid, it calls rng-dt-error
passing it arguments in the same style as format; the value from
rng-dt-error will be returned.  Otherwise, it returns a list.  The
first member of the list is t if any string is a legal value for the
datatype and nil otherwise.  The second argument is a symbol; this
symbol will be called as a function passing it a string followed by
the remaining members of the list.  The function must return an object
representing the value of the datatype that was represented by the
string, or nil if the string is not a representation of any value.
The object returned can be any convenient non-nil value, provided
that, if two strings represent the same value, the returned objects
must be equal."
Mark A. Hershberger's avatar
Mark A. Hershberger committed
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
  (let ((convert (get name 'rng-xsd-convert)))
    (if (not convert)
	(rng-dt-error "There is no XSD datatype named %s" name)
      (rng-xsd-compile1 name params convert))))

;;; Parameters

(defun rng-xsd-compile1 (name params convert)
  (if (null params)
      (cons (equal convert '(identity))
	    (cond ((eq name 'string) convert)
		  ((eq name 'normalizedString)
		   (cons 'rng-xsd-replace-space convert))
		  ((and (not (eq name 'string))
			(or (memq 'identity convert)
			    (memq 'rng-xsd-convert-any-uri convert)
			    (memq 'rng-xsd-check-pattern convert)))
		   (cons 'rng-xsd-collapse-space convert))
		  (t convert)))
    (let* ((param (car params))
	   (param-name (car param))
	   (param-value (cdr param)))
      (cond ((memq param-name
		   '(minExclusive maxExclusive minInclusive maxInclusive))
	     (let ((limit (apply (car convert)
				 (cons param-value
				       (cdr convert))))
		   (less-than-fun (get name 'rng-xsd-less-than)))
	       (cond ((not limit)
		      (rng-dt-error "Minimum value %s is not valid"
				    param-value))
		     ((not less-than-fun)
		      (rng-dt-error "Values of type %s are not ordered"
				    param-name))
		     (t
		      (rng-xsd-compile1 name
					(cdr params)
					(cons (get param-name
						   'rng-xsd-check)
					      (cons less-than-fun
						    (cons limit convert))))))))
	    ((memq param-name '(length minLength maxLength))
	     (let ((limit (rng-xsd-string-to-non-negative-integer param-value))
		   (length-fun (get name 'rng-xsd-length)))
	       (cond ((not limit)
		      (rng-dt-error "Length %s is not valid" param-value))
		     ((not length-fun)
		      (rng-dt-error "Values of type %s do not have a length"
				    param-name))
		     (t
		      (rng-xsd-compile1 name
					(cdr params)
					(cons (get param-name
						   'rng-xsd-check)
					      (cons length-fun
						    (cons limit convert))))))))
	    ((memq param-name '(fractionDigits totalDigits))
	     (let ((n (rng-xsd-string-to-non-negative-integer param-value)))
	       (cond ((not n)
		      (rng-dt-error "Number of digits %s is not valid"
				    param-value))
		     (t
		      (rng-xsd-compile1 name
					(cdr params)
					(cons (get param-name
						   'rng-xsd-check)
					      (cons n convert)))))))
	    ((eq param-name 'pattern)
	     (condition-case err
		 (rng-xsd-compile1 name
				   (cdr params)
				   (cons 'rng-xsd-check-pattern
					 (cons (concat
						"\\`"
						(xsdre-translate param-value)
						"\\'")
					       convert)))
	       (xsdre-invalid-regexp
		(rng-dt-error "Invalid regular expression (%s)"
			      (nth 1 err)))))
	    ((memq param-name '(enumeration whiteSpace))
	     (rng-dt-error "Facet %s cannot be used in RELAX NG" param-name))
	    (t (rng-dt-error "Unknown facet %s" param-name))))))
148

Mark A. Hershberger's avatar
Mark A. Hershberger committed
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
(defun rng-xsd-string-to-non-negative-integer (str)
  (and (rng-xsd-convert-integer str)
       (let ((n (string-to-number str)))
	 (and (integerp n)
	      (>= n 0)
	      n))))

(defun rng-xsd-collapse-space (str convert &rest args)
  (apply convert (cons (mapconcat 'identity (split-string str "[ \t\n\r]+")
				  " ")
		       args)))

(defun rng-xsd-replace-space (str convert &rest args)
  (apply convert
	 (cons (let ((i 0)
		     copied)
		 (while (and (setq i (string-match "[\r\n\t]" str i))
			     (or copied (setq copied (copy-sequence str)))
			     (aset copied i 32)
			     (setq i (1+ i))))
		 (or copied str))
	       args)))

(put 'minExclusive 'rng-xsd-check 'rng-xsd-check-min-exclusive)
(put 'minInclusive 'rng-xsd-check 'rng-xsd-check-min-inclusive)
(put 'maxExclusive 'rng-xsd-check 'rng-xsd-check-max-exclusive)
(put 'maxInclusive 'rng-xsd-check 'rng-xsd-check-max-inclusive)
(put 'length 'rng-xsd-check 'rng-xsd-check-length)
(put 'minLength 'rng-xsd-check 'rng-xsd-check-min-length)
(put 'maxLength 'rng-xsd-check 'rng-xsd-check-max-length)
(put 'fractionDigits 'rng-xsd-check 'rng-xsd-check-fraction-digits)
(put 'totalDigits 'rng-xsd-check 'rng-xsd-check-total-digits)

(defun rng-xsd-check-min-exclusive (str less-than-fun limit convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (funcall less-than-fun limit obj)
	 obj)))

(defun rng-xsd-check-min-inclusive (str less-than-fun limit convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (or (funcall less-than-fun limit obj)
	     (equal limit obj))
	 obj)))

(defun rng-xsd-check-max-exclusive (str less-than-fun limit convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (funcall less-than-fun obj limit)
	 obj)))

(defun rng-xsd-check-max-inclusive (str less-than-fun limit convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (or (funcall less-than-fun obj limit)
	     (equal obj limit))
	 obj)))

(defun rng-xsd-check-min-length (str length-fun limit convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (>= (funcall length-fun obj) limit)
	 obj)))

(defun rng-xsd-check-max-length (str length-fun limit convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (<= (funcall length-fun obj) limit)
	 obj)))

(defun rng-xsd-check-length (str length-fun len convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (= (funcall length-fun obj) len)
	 obj)))

(defun rng-xsd-check-fraction-digits (str n convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (<= (length (aref obj 2)) n)
	 obj)))

(defun rng-xsd-check-total-digits (str n convert &rest args)
  (let ((obj (apply convert (cons str args))))
    (and obj
	 (<= (+ (length (aref obj 1))
		(length (aref obj 2)))
	     n)
	 obj)))

(defun rng-xsd-check-pattern (str regexp convert &rest args)
241
  (and (let ((case-fold-search nil)) (string-match regexp str))
Mark A. Hershberger's avatar
Mark A. Hershberger committed
242 243
       (apply convert (cons str args))))

244

Mark A. Hershberger's avatar
Mark A. Hershberger committed
245 246 247 248 249
(defun rng-xsd-convert-boolean (string)
  (and (string-match "\\`[ \t\n\r]*\\(?:\\(true\\|1\\)\\|false\\|0\\)[ \t\n\r]*\\'" string)
       (if (match-beginning 1) 'true 'false)))

(defun rng-xsd-convert-decimal (string)
250 251 252 253
  "Convert a string representing a decimal to an object representing it values.
A decimal value is represented by a vector [SIGN INTEGER-DIGITS
FRACTION-DIGITS] where SIGN is 1 or -1, INTEGER-DIGITS is a string
containing zero or more digits, with no leading zero, and
Mark A. Hershberger's avatar
Mark A. Hershberger committed
254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
FRACTION-DIGITS is a string containing zero or more digits with no
trailing digits.  For example, -0021.0430 would be represented by [-1
\"21\" \"043\"]."
  (and (string-match "\\`[ \t\n\r]*\\([-+]\\)?\\(0*\\([1-9][0-9]*\\)?\\(\\.\\([0-9]*[1-9]\\)?0*\\)?\\)[ \t\n\r]*\\'" string)
       (let ((digits (match-string 2 string)))
	 (and (not (string= digits "."))
	      (not (string= digits ""))))
       (let ((integer-digits (match-string 3 string)))
	 (vector (if (and (equal (match-string 1 string) "-")
			  ;; Normalize -0 to 0
			  integer-digits)
		     -1
		   1)
		 (or integer-digits "")
		 (or (match-string 5 string) "")))))

(defun rng-xsd-convert-integer (string)
  (and (string-match "\\`[ \t\n\r]*\\([-+]\\)?\\(?:0*\\([1-9][0-9]*\\)\\|0+\\)[ \t\n\r]*\\'" string)
       (let ((integer-digits (match-string 2 string)))
	 (vector (if (and (equal (match-string 1 string) "-")
			  ;; Normalize -0 to 0
			  integer-digits)
		     -1
		   1)
		 (or integer-digits "")
		 ""))))

(defun rng-xsd-decimal< (n1 n2)
  (< (rng-xsd-compare-decimal n1 n2) 0))

(defun rng-xsd-compare-decimal (n1 n2)
  "Return a < 0, 0, > 0 according as n1 < n2, n1 = n2 or n1 > n2."
  (let* ((sign1 (aref n1 0))
	 (sign2 (aref n2 0))
	 (sign (- sign1 sign2)))
    (if (= sign 0)
	(* sign1
	   (let* ((int1 (aref n1 1))
		  (int2 (aref n2 1))
		  (len1 (length int1))
		  (len2 (length int2))
		  (lencmp (- len1 len2)))
	     (if (eq lencmp 0)
		 (if (string= int1 int2)
		     (rng-xsd-strcmp (aref n1 2) (aref n2 2))
		   (rng-xsd-strcmp int1 int2))
	       lencmp)))
      sign)))

(defconst rng-xsd-float-regexp
  (concat "\\`[ \r\n\t]*\\(?:"
	  "\\("
	  "[-+]?\\(?:[0-9]+\\(?:\\.[0-9]*\\)?\\|\\.[0-9]+\\)"
	  "\\(?:[eE][-+]?[0-9]+\\)?"
	  "\\)"
	  "\\|\\(INF\\)"
	  "\\|\\(-INF\\)"
	  "\\|\\(NaN\\)"
	  "\\)[ \r\n\t]*\\'"))

(defun rng-xsd-convert-float (string)
  (cond ((not (string-match rng-xsd-float-regexp string)) nil)
	((match-beginning 1)
	 (float (string-to-number (match-string 1 string))))
	((match-beginning 2) 1.0e+INF)
	((match-beginning 3) -1.0e+INF)
	;; Don't use a NaN float because we want NaN to be equal to NaN
	((match-beginning 4) 'NaN)))
322

Mark A. Hershberger's avatar
Mark A. Hershberger committed
323 324 325 326
(defun rng-xsd-float< (f1 f2)
  (and (not (eq f1 'NaN))
       (not (eq f2 'NaN))
       (< f1 f2)))
327

Mark A. Hershberger's avatar
Mark A. Hershberger committed
328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345
(defun rng-xsd-convert-token (string regexp)
  (and (string-match regexp string)
       (match-string 1 string)))

(defun rng-xsd-convert-hex-binary (string)
  (and (string-match "\\`[ \r\n\t]*\\(\\(?:[0-9A-Fa-f][0-9A-Fa-f]\\)*\\)[ \r\n\t]*\\'"
		     string)
       (downcase (match-string 1 string))))

(defun rng-xsd-hex-binary-length (obj)
  (/ (length obj) 2))

(defconst rng-xsd-base64-binary-regexp
  (let ((S "[ \t\r\n]*")
	(B04 "[AQgw]")
	(B16 "[AEIMQUYcgkosw048]")
	(B64 "[A-Za-z0-9+/]"))
    (concat "\\`" S "\\(?:\\(?:" B64 S "\\)\\{4\\}\\)*"
346
	    "\\(?:" B64 S B64 S B16 S "=" S
Mark A. Hershberger's avatar
Mark A. Hershberger committed
347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368
	    "\\|" B64 S B04 S "=" S "=" S "\\)?\\'")))

(defun rng-xsd-convert-base64-binary (string)
  (and (string-match rng-xsd-base64-binary-regexp string)
       (replace-regexp-in-string "[ \t\r\n]+" "" string t t)))

(defun rng-xsd-base64-binary-length (obj)
  (let ((n (* (/ (length obj) 4) 3)))
    (if (and (> n 0)
	     (string= (substring obj -1) "="))
	(- n (if (string= (substring obj -2) "==")
		 2
	       1))
      n)))

(defun rng-xsd-convert-any-uri (string)
  (and (string-match "\\`\\(?:[^%]\\|%[0-9a-fA-F][0-9a-fA-F]\\)?*\\'" string)
       (string-match "\\`[^#]*\\(?:#[^#]*\\)?\\'" string)
       (string-match "\\`\\(?:[a-zA-Z][-+.A-Za-z0-9]*:.+\\|[^:]*\\(?:[#/?].*\\)?\\)\\'" string)
       string))

(defun rng-xsd-make-date-time-regexp (template)
369 370 371
  "Returns a regular expression matching a ISO 8601 date/time.
The template is a string with Y standing for years field, M standing
for months, D standing for day of month, T standing for a literal T, t
Mark A. Hershberger's avatar
Mark A. Hershberger committed
372
standing for time and - standing for a literal hyphen.  A time zone is
373
always allowed at the end.  Regardless of the fields appearing in the
Mark A. Hershberger's avatar
Mark A. Hershberger committed
374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436
template, the regular expression will have twelve groups matching the
year sign, year, month, day of month, hours, minutes, integer seconds,
fractional seconds (including leading period), time zone, time zone
sign, time zone hours, time zone minutes."
  (let ((i 0)
	(len (length template))
	(parts nil)
	first last c)
    (while (< i len)
      (setq c (aref template i))
      (setq parts
	    (cons (cond ((eq c ?Y)
			 (setq first 0)
			 (setq last 1)
			 "\\(-\\)?\\(\\(?:[1-9][0-9]*\\)?[0-9]\\{4\\}\\)")
			((eq c ?M)
			 (or first
			     (setq first 2))
			 (setq last 2)
			 "\\([0-9][0-9]\\)")
			((eq c ?D)
			 (or first
			     (setq first 3))
			 (setq last 3)
			 "\\([0-9][0-9]\\)")
			((eq c ?t)
			 (or first
			     (setq first 4))
			 (setq last 7)
			 "\\([0-9][0-9]\\):\\([0-9][0-9]\\):\\([0-9][0-9]\\)\\(\\.[0-9]*\\)?")
			(t (string c)))
		  parts))
      (setq i (1+ i)))
    (while (< last 7)
      (setq last (1+ last))
      ;; Add dummy fields that can never much but keep the group
      ;; numbers uniform.
      (setq parts (cons "\\(\\'X\\)?" parts)))
    (setq parts (cons "\\(Z\\|\\([-+]\\)\\([0-9][0-9]\\):\\([0-5][0-9]\\)\\)?[ \t\n\r]*\\'"
		      parts))
    (setq parts (cons "\\`[ \t\n\r]*" (nreverse parts)))
    (while (> first 0)
      (setq first (1- first))
      (setq parts (cons "\\(X\\)?" parts)))
    (apply 'concat parts)))

(defconst rng-xsd-seconds-per-day (* 24 60 60))
(defconst rng-xsd-days-in-month [31 28 31 30 31 30 31 31 30 31 30 31])

(defun rng-xsd-days-in-month (year month)
  (if (and (= month 2) (rng-xsd-leap-year-p year))
      29
    (aref rng-xsd-days-in-month (1- month))))

(defconst rng-xsd-months-to-days
  (let ((v (make-vector 12 nil))
	(total 0)
	(i 0))
    (while (< i 12)
      (setq total (+ total (aref rng-xsd-days-in-month i)))
      (aset v i total)
      (setq i (1+ i)))
    v))
437

Mark A. Hershberger's avatar
Mark A. Hershberger committed
438
(defun rng-xsd-convert-date-time (string regexp)
439 440 441 442 443 444 445 446
  "Converts an XML Schema date/time to a list.
Returns nil if invalid.  REGEXP is a regexp for parsing the date time
as returned by `rng-xsd-make-date-time-regexp'.  The list has 4 members
\(HAS-TIME-ZONE DAY SECOND SECOND-FRACTION), where HAS-TIME-ZONE is t
or nil depending on whether a time zone was specified, DAY is an
integer giving a day number (with Jan 1 1AD being day 1), SECOND is the
second within that day, and SECOND-FRACTION is a float giving the
fractional part of the second."
Mark A. Hershberger's avatar
Mark A. Hershberger committed
447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550
  (and (string-match regexp string)
       (let ((year-sign (match-string 1 string))
	     (year (match-string 2 string))
	     (month (match-string 3 string))
	     (day (match-string 4 string))
	     (hour (match-string 5 string))
	     (minute (match-string 6 string))
	     (second (match-string 7 string))
	     (second-fraction (match-string 8 string))
	     (has-time-zone (match-string 9 string))
	     (time-zone-sign (match-string 10 string))
	     (time-zone-hour (match-string 11 string))
	     (time-zone-minute (match-string 12 string)))
	 (setq year-sign (if year-sign -1 1))
	 (setq year
	       (if year
		   (* year-sign
		      (string-to-number year))
		 2000))
	 (setq month
	       (if month (string-to-number month) 1))
	 (setq day
	       (if day (string-to-number day) 1))
	 (setq hour
	       (if hour (string-to-number hour) 0))
	 (setq minute
	       (if minute (string-to-number minute) 0))
	 (setq second
	       (if second (string-to-number second) 0))
	 (setq second-fraction
	       (if second-fraction
		   (float (string-to-number second-fraction))
		 0.0))
	 (setq has-time-zone (and has-time-zone t))
	 (setq time-zone-sign
	       (if (equal time-zone-sign "-") -1 1))
	 (setq time-zone-hour
	       (if time-zone-hour (string-to-number time-zone-hour) 0))
	 (setq time-zone-minute
	       (if time-zone-minute (string-to-number time-zone-minute) 0))
	 (and (>= month 1)
	      (<= month 12)
	      (>= day 1)
	      (<= day (rng-xsd-days-in-month year month))
	      (<= hour 23)
	      (<= minute 59)
	      (<= second 60)		; leap second
	      (<= time-zone-hour 23)
	      (<= time-zone-minute 59)
	      (cons has-time-zone
		    (rng-xsd-add-seconds
		     (list (rng-xsd-date-to-days year month day)
			   (rng-xsd-time-to-seconds hour minute second)
			   second-fraction)
		     (* (rng-xsd-time-to-seconds time-zone-hour
						 time-zone-minute
						 0)
			(- time-zone-sign))))))))

(defun rng-xsd-leap-year-p (year)
  (and (= (% year 4) 0)
       (or (/= (% year 100) 0)
	   (= (% year 400) 0))))

(defun rng-xsd-time-to-seconds (hour minute second)
  (+ (* (+ (* hour 60)
	   minute)
	60)
     second))

(defconst rng-xsd-max-tz (rng-xsd-time-to-seconds 14 0 0))

(defun rng-xsd-date-time< (dt1 dt2)
  (cond ((eq (car dt1) (car dt2))
	 (rng-xsd-number-list< (cdr dt1) (cdr dt2)))
	((car dt1)
	 (rng-xsd-number-list< (cdr dt1)
			       (rng-xsd-add-seconds (cdr dt2)
						    (- rng-xsd-max-tz))))
	(t
	 (rng-xsd-number-list< (rng-xsd-add-seconds (cdr dt1)
						    rng-xsd-max-tz)
			       (cdr dt2)))))

(defun rng-xsd-add-seconds (date offset)
  (let ((day (nth 0 date))
	(second (+ (nth 1 date) offset))
	(fraction (nth 2 date)))
    (cond ((< second 0)
	   (list (1- day)
		 (+ second rng-xsd-seconds-per-day)
		 fraction))
	  ((>= second rng-xsd-seconds-per-day)
	   (list (1+ day)
		 (- second rng-xsd-seconds-per-day)
		 fraction))
	  (t (list day second fraction)))))

(defun rng-xsd-number-list< (numbers1 numbers2)
  (while (and numbers1 (= (car numbers1) (car numbers2)))
    (setq numbers1 (cdr numbers1))
    (setq numbers2 (cdr numbers2)))
  (and numbers1
       (< (car numbers1) (car numbers2))))
551

Mark A. Hershberger's avatar
Mark A. Hershberger committed
552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599
(defun rng-xsd-date-to-days (year month day)
  "Return a unique day number where Jan 1 1 AD is day 1"
  (if (> year 0)			; AD
      (+ (rng-xsd-days-in-years (- year 1))
	 (rng-xsd-day-number-in-year year month day))
    (- (+ (- (rng-xsd-days-in-years (- 3 year))
	     (rng-xsd-days-in-years 3))
	  (- (if (rng-xsd-leap-year-p year) 366 365)
	     (rng-xsd-day-number-in-year year month day))))))

(defun rng-xsd-days-in-years (years)
  "The number of days in YEARS years where the first year is 1AD."
  (+ (* 365 years)
     (/ years 4)
     (- (/ years 100))
     (/ years 400)))

(defun rng-xsd-day-number-in-year (year month day)
  (+ (if (= month 1)
	 0
	 (aref rng-xsd-months-to-days (- month 2)))
     day
     (if (and (> month 2)
	      (rng-xsd-leap-year-p year))
	 1
       0)))

(defconst rng-xsd-duration-regexp
    "\\`[ \t\r\n]*\\(-\\)?P\
\\([0-9]+Y\\)?\\([0-9]+M\\)?\\([0-9]+D\\)?\
\\(?:T\\([0-9]+H\\)?\\([0-9]+M\\)?\
\\(\\([0-9]+\\(?:\\.[0-9]*\\)?\\|\\.[0-9]+\\)S\\)?\\)?\
[ \t\r\n]*\\'")


(defun rng-xsd-convert-duration (string)
  (and (string-match rng-xsd-duration-regexp string)
       (let ((last (substring string -1)))
	 (not (or (string= last "P")
		  (string= last "T"))))
       ;; years months days hours minutes seconds
       (let ((v (make-vector 6 0))
	     (sign (if (match-beginning 1) -1 1))
	     (i 0))
	 (while (< i 6)
	   (let ((start (match-beginning (+ i 2))))
	     (when start
	       (aset v i (* sign
600
			    (string-to-number
Mark A. Hershberger's avatar
Mark A. Hershberger committed
601 602 603 604 605 606 607
			     (substring string
					start
					(1- (match-end (+ i 2)))))))))
	   (setq i (1+ i)))
	 ;; Force seconds to be float so that equal works properly.
	 (aset v 5 (float (aref v 5)))
	 v)))
608

Mark A. Hershberger's avatar
Mark A. Hershberger committed
609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684
(defconst rng-xsd-min-seconds-per-month (* 28 rng-xsd-seconds-per-day))

(defun rng-xsd-duration< (d1 d2)
  (let* ((months1 (rng-xsd-duration-months d1))
	 (months2 (rng-xsd-duration-months d2))
	 (seconds1 (rng-xsd-duration-seconds d1))
	 (seconds2 (rng-xsd-duration-seconds d2)))
    (cond ((< months1 months2)
	   (if (< (- seconds1 seconds2) rng-xsd-min-seconds-per-month)
	       t
	     (rng-xsd-months-seconds< months1 seconds1 months2 seconds2)))
	  ((> months1 months2)
	   (if (< (- seconds2 seconds1) rng-xsd-min-seconds-per-month)
	       nil
	     (rng-xsd-months-seconds< months1 seconds1 months2 seconds2)))
	  (t (< seconds1 seconds2)))))

(defconst xsd-duration-reference-dates
  '((1696 . 9) (1697 . 2) (1903 . 3) (1903 . 7)))

(defun rng-xsd-months-seconds< (months1 seconds1 months2 seconds2)
  (let ((ret t)
	(ref-dates xsd-duration-reference-dates))
    (while (let* ((ref-date (car ref-dates))
		  (ref-year (car ref-date))
		  (ref-month (cdr ref-date)))
	     (unless (< (+ (rng-xsd-month-seconds months1
						  ref-year
						  ref-month)
			   seconds1)
			(+ (rng-xsd-month-seconds months2
						  ref-year
						  ref-month)
			   seconds2))
		 (setq ret nil))
	     (and ret
		  (setq ref-dates (cdr ref-dates)))))
    ret))


(defun rng-xsd-month-seconds (months ref-year ref-month)
  "Return the seconds in a number of months starting on a reference date.
Returns a floating point number."
  (* (rng-xsd-month-days (abs months) ref-year ref-month)
     (float rng-xsd-seconds-per-day)
     (if (< months 0) -1.0 1.0)))

(defconst rng-xsd-years-per-gregorian-cycle 400)
(defconst rng-xsd-months-per-gregorian-cycle
  (* rng-xsd-years-per-gregorian-cycle 12))
(defconst rng-xsd-leap-years-per-gregorian-cycle (- 100 (- 4 1)))
(defconst rng-xsd-days-per-gregorian-cycle
  (+ (* 365 rng-xsd-years-per-gregorian-cycle)
     rng-xsd-leap-years-per-gregorian-cycle))

(defun rng-xsd-month-days (months ref-year ref-month)
  "Return the days in a number of months starting on a reference date.
MONTHS must be an integer >= 0."
  (let ((days 0))
    (setq months (mod months rng-xsd-months-per-gregorian-cycle))
    ;; This may be rather slow, but it is highly unlikely
    ;; ever to be used in real life.
    (while (> months 0)
      (setq days
	    (+ (rng-xsd-days-in-month ref-year ref-month)
	       days))
      (setq ref-month
	    (if (eq ref-month 12)
		(progn
		  (setq ref-year (1+ ref-year))
		  1)
	      (1+ ref-month)))
      (setq months (1- months)))
    (+ (* (/ months rng-xsd-months-per-gregorian-cycle)
	  rng-xsd-days-per-gregorian-cycle)
       days)))
685

Mark A. Hershberger's avatar
Mark A. Hershberger committed
686 687 688 689 690 691 692 693 694 695 696 697
(defun rng-xsd-duration-months (d)
  (+ (* (aref d 0) 12)
     (aref d 1)))

(defun rng-xsd-duration-seconds (d)
  (+ (* (+ (* (+ (* (aref d 2)
		    24.0)
		 (aref d 3))
	      60.0)
	   (aref d 4))
	60.0)
     (aref d 5)))
698

Mark A. Hershberger's avatar
Mark A. Hershberger committed
699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715
(defun rng-xsd-convert-qname (string)
  (and (string-match "\\`[ \r\n\t]*\\([_[:alpha:]][-._[:alnum:]]*\\(:[_[:alpha:]][-._[:alnum:]]*\\)?\\)[ \r\n\t]*\\'" string)
       (let ((colon (match-beginning 2))
	     (context (apply (car rng-dt-namespace-context-getter)
			     (cdr rng-dt-namespace-context-getter))))
	 (if colon
	     (let* ((prefix (substring string
				       (match-beginning 1)
				       colon))
		    (binding (assoc prefix (cdr context))))
	       (and binding
		    (cons (cdr binding)
			  (substring string
				     (1+ colon)
				     (match-end 1)))))
	   (cons (car context)
		 (match-string 1 string))))))
716

Mark A. Hershberger's avatar
Mark A. Hershberger committed
717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773
(defun rng-xsd-convert-list (string convert &rest args)
  (let* ((tokens (split-string string "[ \t\n\r]+"))
	 (tem tokens))
    (while tem
      (let ((obj (apply convert
			(cons (car tem) args))))
	(cond (obj
	       (setcar tem obj)
	       (setq tem (cdr tem)))
	      (t
	       (setq tokens nil)
	       (setq tem nil)))))
    ;; Fortuitously this returns nil if the list is empty
    ;; which is what we want since the list types
    ;; have to have one or more members.
    tokens))

(defun rng-xsd-strcmp (s1 s2)
  (cond ((string= s1 s2) 0)
	((string< s1 s2) -1)
	(t 1)))

(put 'string 'rng-xsd-convert '(identity))
(put 'string 'rng-xsd-length 'length)
(put 'string 'rng-xsd-matches-anything t)

(put 'normalizedString 'rng-xsd-convert '(identity))
(put 'normalizedString 'rng-xsd-length 'length)
(put 'normalizedString 'rng-xsd-matches-anything t)

(put 'token 'rng-xsd-convert '(identity))
(put 'token 'rng-xsd-length 'length)
(put 'token 'rng-xsd-matches-anything t)

(put 'hexBinary 'rng-xsd-convert '(rng-xsd-convert-hex-binary))
(put 'hexBinary 'rng-xsd-length 'rng-xsd-hex-binary-length)

(put 'base64Binary 'rng-xsd-convert '(rng-xsd-convert-base64-binary))
(put 'base64Binary 'rng-xsd-length 'rng-xsd-base64-binary-length)

(put 'boolean 'rng-xsd-convert '(rng-xsd-convert-boolean))

(put 'float 'rng-xsd-convert '(rng-xsd-convert-float))
(put 'float 'rng-xsd-less-than 'rng-xsd-float<)

(put 'double 'rng-xsd-convert '(rng-xsd-convert-float))
(put 'double 'rng-xsd-less-than 'rng-xsd-float<)

(put 'decimal 'rng-xsd-convert '(rng-xsd-convert-decimal))
(put 'decimal 'rng-xsd-less-than 'rng-xsd-decimal<)

(put 'integer 'rng-xsd-convert '(rng-xsd-convert-integer))
(put 'integer 'rng-xsd-less-than 'rng-xsd-decimal<)

(defun rng-xsd-def-integer-type (name min max)
  (put name 'rng-xsd-less-than 'rng-xsd-decimal<)
  (put name
774
       'rng-xsd-convert
Mark A. Hershberger's avatar
Mark A. Hershberger committed
775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859
       (cdr (rng-xsd-compile 'integer
			     (append (and min `((minInclusive . ,min)))
				     (and max `((maxInclusive . ,max))))))))

(defun rng-xsd-def-token-type (name regexp)
  (put name 'rng-xsd-convert (list 'rng-xsd-convert-token
				   (concat "\\`[\r\n\t ]*\\("
					   regexp
					   "\\)[\r\n\t ]*\\'")))
  (put name 'rng-xsd-length 'length))

(rng-xsd-def-token-type 'NMTOKEN "[-.:_[:alnum:]]+")
(rng-xsd-def-token-type 'Name "[:_[:alpha:]][-.:_[:alnum:]]*")
(rng-xsd-def-token-type 'NCName "[_[:alpha:]][-._[:alnum:]]*")
(rng-xsd-def-token-type 'language
			"[a-zA-Z]\\{1,8\\}\\(?:-[a-zA-Z0-9]\\{1,8\\}\\)*")

(put 'ENTITY 'rng-xsd-convert (get 'NCName 'rng-xsd-convert))
(put 'ENTITY 'rng-xsd-length 'length)
(put 'ID 'rng-xsd-convert (get 'NCName 'rng-xsd-convert))
(put 'ID 'rng-xsd-length 'length)
(put 'IDREF 'rng-xsd-convert (get 'NCName 'rng-xsd-convert))
(put 'IDREF 'rng-xsd-length 'length)

(defun rng-xsd-def-list-type (name member-name)
  (put name 'rng-xsd-convert (cons 'rng-xsd-convert-list
				   (get member-name 'rng-xsd-convert)))
  (put name 'rng-xsd-length 'length))

(rng-xsd-def-list-type 'NMTOKENS 'NMTOKEN)
(rng-xsd-def-list-type 'IDREFS 'IDREF)
(rng-xsd-def-list-type 'ENTITIES 'ENTITY)

(put 'anyURI 'rng-xsd-convert '(rng-xsd-convert-any-uri))
(put 'anyURI 'rng-xsd-length 'length)

(put 'QName 'rng-xsd-convert '(rng-xsd-convert-qname))
(put 'NOTATION 'rng-xsd-convert '(rng-xsd-convert-qname))

(defconst rng-xsd-long-max "9223372036854775807")
(defconst rng-xsd-long-min "-9223372036854775808")
(defconst rng-xsd-int-max "2147483647")
(defconst rng-xsd-int-min "-2147483648")
(defconst rng-xsd-short-max "32767")
(defconst rng-xsd-short-min "-32768")
(defconst rng-xsd-byte-max "127")
(defconst rng-xsd-byte-min "-128")
(defconst rng-xsd-unsigned-long-max "18446744073709551615")
(defconst rng-xsd-unsigned-int-max "4294967295")
(defconst rng-xsd-unsigned-short-max "65535")
(defconst rng-xsd-unsigned-byte-max "255")

(rng-xsd-def-integer-type 'nonNegativeInteger "0" nil)
(rng-xsd-def-integer-type 'positiveInteger "1" nil)
(rng-xsd-def-integer-type 'nonPositiveInteger nil "0")
(rng-xsd-def-integer-type 'negativeInteger nil "-1")
(rng-xsd-def-integer-type 'long rng-xsd-long-min rng-xsd-long-max)
(rng-xsd-def-integer-type 'int rng-xsd-int-min rng-xsd-int-max)
(rng-xsd-def-integer-type 'short rng-xsd-short-min rng-xsd-short-max)
(rng-xsd-def-integer-type 'byte rng-xsd-byte-min rng-xsd-byte-max)
(rng-xsd-def-integer-type 'unsignedLong "0" rng-xsd-unsigned-long-max)
(rng-xsd-def-integer-type 'unsignedInt "0" rng-xsd-unsigned-int-max)
(rng-xsd-def-integer-type 'unsignedShort "0" rng-xsd-unsigned-short-max)
(rng-xsd-def-integer-type 'unsignedByte "0" rng-xsd-unsigned-byte-max)

(defun rng-xsd-def-date-time-type (name template)
  (put name 'rng-xsd-convert (list 'rng-xsd-convert-date-time
				   (rng-xsd-make-date-time-regexp template)))
  (put name 'rng-xsd-less-than 'rng-xsd-date-time<))

(rng-xsd-def-date-time-type 'dateTime "Y-M-DTt")
(rng-xsd-def-date-time-type 'time "t")
(rng-xsd-def-date-time-type 'date "Y-M-D")
(rng-xsd-def-date-time-type 'gYearMonth "Y-M")
(rng-xsd-def-date-time-type 'gYear "Y")
(rng-xsd-def-date-time-type 'gMonthDay "--M-D")
(rng-xsd-def-date-time-type 'gDay "---D")
(rng-xsd-def-date-time-type 'gMonth "--M")

(put 'duration 'rng-xsd-convert '(rng-xsd-convert-duration))
(put 'duration 'rng-xsd-less-than 'rng-xsd-duration<)

(provide 'rng-xsd)

;;; rng-xsd.el ends here