[bpt/emacs.git] / lisp / nxml / rng-uri.el

;;; rng-uri.el --- URI parsing and manipulation

;; Copyright (C) 2003, 2007-2013 Free Software Foundation, Inc.

;; Author: James Clark
;; Keywords: XML

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; 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
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(defun rng-file-name-uri (f)
  "Return a URI for the filename F.
Multibyte characters are left as is.  Use `rng-uri-escape-multibyte' to
escape them using %HH."
  (setq f (expand-file-name f))
  (let ((url
	 (replace-regexp-in-string "[\000-\032\177<>#%\"{}|\\^[]`%?;]"
				   'rng-percent-encode
				   f)))
    (concat "file:"
	    (if (and (> (length url) 0)
		     (= (aref url 0) ?/))
		"//"
	      "///")
	    url)))

(defun rng-uri-escape-multibyte (uri)
  "Escape multibyte characters in URI."
  (replace-regexp-in-string "[:nonascii:]"
			    'rng-percent-encode
			    (encode-coding-string uri 'utf-8)))

(defun rng-percent-encode (str)
  (apply 'concat
	 (mapcar (lambda (ch)
		   (format "%%%x%x" (/ ch 16) (% ch 16)))
		 (string-to-list str))))


(defun rng-uri-file-name (uri)
  "Return the filename represented by a URI.
Signal an error if URI is not a valid file URL."
  (rng-uri-file-name-1 uri nil))

(defun rng-uri-pattern-file-name-regexp (pattern)
  "Return a regexp for filenames represented by URIs that match PATTERN."
  (rng-uri-file-name-1 pattern 'match))

(defun rng-uri-pattern-file-name-replace-match (pattern)
  (rng-uri-file-name-1 pattern 'replace))

;; pattern is either nil or match or replace
(defun rng-uri-file-name-1 (uri pattern)
  (unless (string-match "\\`\\(?:[^%]\\|%[0-9a-fA-F]{2}\\)*\\'" uri)
    (rng-uri-error "Bad escapes in URI `%s'" uri))
  (setq uri (rng-uri-unescape-multibyte uri))
  (let* ((components
	  (or (rng-uri-split uri)
	      (rng-uri-error "Cannot split URI `%s' into its components" uri)))
	 (scheme (nth 0 components))
	 (authority (nth 1 components))
	 (path (nth 2 components))
	 (absolutep (string-match "\\`/" path))
	 (query (nth 3 components))
	 (fragment-id (nth 4 components)))
    (cond ((not scheme)
	   (unless pattern
	     (rng-uri-error "URI `%s' does not have a scheme" uri)))
	  ((not (string= (downcase scheme) "file"))
	   (rng-uri-error "URI `%s' does not use the `file:' scheme" uri)))
    (when (not (member authority
		       (cons system-name '(nil "" "localhost"))))
      (rng-uri-error "URI `%s' does not start with `file:///' or `file://localhost/'"
	     uri))
    (when query
      (rng-uri-error "`?' not escaped in file URI `%s'" uri))
    (when fragment-id
      (rng-uri-error "URI `%s' has a fragment identifier" uri))
    (when (string-match ";" path)
      (rng-uri-error "`;' not escaped in URI `%s'" uri))
    (when (string-match "%2[fF]" path) ;; 2f is hex code of slash
      (rng-uri-error "Escaped slash in URI `%s'" uri))
    (when (and (eq system-type 'windows-nt)
	       absolutep
	       (file-name-absolute-p (substring path 1)))
      (setq path (substring path 1)))
    (when (and pattern (string-match "\\`\\./" path))
      (setq path (substring path 2)))
    (setq path
	  (cond ((eq pattern 'match)
		 (rng-uri-unescape-unibyte-match path))
		((eq pattern 'replace)
		 (rng-uri-unescape-unibyte-replace path 2))
		(t
		 (rng-uri-unescape-unibyte path))))
    (when (string-match "\000" path)
      (rng-uri-error "URI `%s' has NUL character in path" uri))
    (when (eq pattern 'match)
      (setq path
	    (concat (if absolutep
			"\\(\\)"
		      "\\(\\(?:[^/]*/\\)*\\)")
		    path)))
    (cond ((eq pattern 'match)
	   (concat "\\`" path "\\'"))
	  ((and (eq pattern 'replace)
		(not absolutep))
	   (concat "\\1" path))
	  (t path))))

(defun rng-uri-error (&rest args)
  (signal 'rng-uri-error (list (apply 'format args))))

(put 'rng-uri-error 'error-conditions '(error rng-uri-error))
(put 'rng-uri-error 'error-message "Invalid URI")

(defun rng-uri-split (str)
  (and (string-match "\\`\\(?:\\([^:/?#]+\\):\\)?\
\\(?://\\([^/?#]*\\)\\)?\
\\([^?#]*\\)\
\\(?:\\?\\([^#]*\\)\\)?\
\\(?:#\\(\\(?:.\\|\n\\)*\\)\\)?\\'"
		     str)
       (list (match-string 1 str)
	     (match-string 2 str)
	     (match-string 3 str)
	     (match-string 4 str)
	     (match-string 5 str))))

(defun rng-uri-join (scheme authority path &optional query fragment-id)
  (when path
    (let (parts)
      (when fragment-id
	(setq parts (list "#" fragment-id)))
      (when query
	(setq parts
	      (cons "?"
		    (cons query parts))))
      (setq parts (cons path parts))
      (when authority
	(setq parts
	      (cons "//"
		    (cons authority parts))))
      (when scheme
	(setq parts
	      (cons scheme
		    (cons ":" parts))))
      (apply 'concat parts))))

(defun rng-uri-resolve (uri-ref base-uri)
  "Resolve a possibly relative URI reference into absolute form.
URI-REF is the URI reference to be resolved.
BASE-URI is the base URI to use for resolving it.
The algorithm is specified by RFC 2396.
If there is some problem with URI-REF or BASE-URI, then
URI-REF will be returned."
  (let* ((components (rng-uri-split uri-ref))
	 (scheme (nth 0 components))
	 (authority (nth 1 components))
	 (path (nth 2 components))
	 (query (nth 3 components))
	 (fragment-id (nth 4 components))
	 (base-components (rng-uri-split base-uri)))
    (if (or (not components)
	    scheme
	    (not base-components)
	    (not (nth 0 base-components)))
	uri-ref
      (setq scheme (nth 0 base-components))
      (when (not authority)
	(setq authority (nth 1 base-components))
	(if (and (equal path "") (not query))
	    ;; Handle same document reference by returning
	    ;; same URI (RFC 2396bis does this too).
	    (setq path (nth 2 base-components)
		  query (nth 3 base-components))
	  (setq path (rng-resolve-path path (nth 2 base-components)))))
      (rng-uri-join scheme
		    authority
		    path
		    query
		    fragment-id))))

;; See RFC 2396 5.2, steps 5 and 6
(defun rng-resolve-path (path base-path)
  ;; Step 5
  (if (or (string-match "\\`/" path)
	  (not (string-match "\\`/" base-path)))
      path
    ;; Step 6
    ;; (a), (b)
    (let ((segments (rng-split-path path))
	  (base-segments (rng-split-path base-path)))
      (if (> (length base-segments) 1)
	  (setq segments (nconc (nbutlast base-segments)
				segments))
	(setcar segments
		(concat (car base-segments) (car segments))))
      ;; (d)
      (let ((last-segment (last segments)))
	(when (equal (car last-segment) ".")
	  (setcar last-segment "")))
      ;; (c)
      (setq segments (delete "." segments))
      ;; (e)
      (let (iter matched)
	(while (progn
		 (setq matched nil)
		 (setq iter (cdr segments))
		 (while (and iter (not matched))
		   (if (or (not (equal (cadr iter) ".."))
			   (equal (car iter) ".."))
		       (setq iter (cdr iter))
		     (setcar iter nil)
		     (setcar (cdr iter)
			     ;; (f)
			     (if (cddr iter) nil ""))
		     (setq matched t)
		     (setq segments (delq nil segments))))
		 matched)))
      (rng-join-path segments))))

(defun rng-relative-uri (full base)
  "Return a URI that relative to BASE is equivalent to FULL.
The returned URI will be relative if possible.
Both FULL and BASE must be absolute URIs."
  (let* ((components (rng-uri-split full))
	 (scheme (nth 0 components))
	 (authority (nth 1 components))
	 (path (nth 2 components))
	 (query (nth 3 components))
	 (fragment-id (nth 4 components))
	 (base-components (rng-uri-split base)))
    (if (and components
	     base-components
	     scheme
	     (equal scheme
		    (nth 0 base-components)))
	(progn
	  (setq scheme nil)
	  (when (and authority
		     (equal authority
			    (nth 1 base-components)))
	    (setq authority nil)
	    (setq path (rng-relative-path path (nth 2 base-components))))
	  (rng-uri-join scheme authority path query fragment-id))
      full)))

(defun rng-relative-path (path base-path)
  (let ((segments (rng-split-path path))
	(base-segments (rng-split-path base-path)))
    (when (> (length base-segments) 1)
      (setq base-segments (nbutlast base-segments)))
    (if (or (member "." segments)
	    (member ".." segments)
	    (member "." base-segments)
	    (member ".." base-segments))
	path
      (while (and segments
		  base-segments
		  (string= (car segments)
			   (car base-segments)))
	(setq segments (cdr segments))
	(setq base-segments (cdr base-segments)))
      (while base-segments
	(setq base-segments (cdr base-segments))
	(setq segments (cons ".." segments)))
      (when (equal (car segments) "")
	(setq segments (cons "." segments)))
      (rng-join-path segments))))

(defun rng-split-path (path)
  (let ((start 0)
	segments)
    (while (string-match "/" path start)
      (setq segments (cons (substring path start (match-beginning 0))
			   segments))
      (setq start (match-end 0)))
    (nreverse (cons (substring path start) segments))))

(defun rng-join-path (segments)
  (and segments
       (mapconcat 'identity segments "/")))

(defun rng-uri-unescape-multibyte (str)
  (replace-regexp-in-string "\\(?:%[89a-fA-F][0-9a-fA-F]\\)+"
			    'rng-multibyte-percent-decode
			    str))

(defun rng-multibyte-percent-decode (str)
  (decode-coding-string  (apply 'string
				(mapcar (lambda (h) (string-to-number h 16))
					(split-string str "%")))
			 'utf-8))

(defun rng-uri-unescape-unibyte (str)
  (replace-regexp-in-string "%[0-7][0-9a-fA-F]"
			    (lambda (h)
			      (string-to-number (substring h 1) 16))
			    str
			    t
			    t))

(defun rng-uri-unescape-unibyte-match (str)
  (replace-regexp-in-string "%[0-7][0-9a-fA-F]\\|[^%]"
			    (lambda (match)
			      (if (string= match "*")
				  "\\([^/]*\\)"
				(regexp-quote
				 (if (= (length match) 1)
				     match
				   (string-to-number (substring match 1)
						     16)))))
			    str
			    t
			    t))

(defun rng-uri-unescape-unibyte-replace (str next-match-index)
  (replace-regexp-in-string
   "%[0-7][0-9a-fA-F]\\|[^%]"
   (lambda (match)
     (if (string= match "*")
	 (let ((n next-match-index))
	   (setq next-match-index (1+ n))
	   (format "\\%s" n))
       (let ((ch (if (= (length match) 1)
		     (aref match 0)
		   (string-to-number (substring match 1)
				     16))))
	 (if (eq ch ?\\)
	     (string ?\\ ?\\)
	   (string ch)))))
     str
     t
     t))

(provide 'rng-uri)

;;; rng-uri.el ends here
Commit	Line	Data
8cd39fb3 MH	1	;;; rng-uri.el --- URI parsing and manipulation
8cd39fb3 MH	2
ab422c4d	3	;; Copyright (C) 2003, 2007-2013 Free Software Foundation, Inc.
8cd39fb3 MH	4
	5	;; Author: James Clark
	6	;; Keywords: XML
	7
09aa73e6	8	;; This file is part of GNU Emacs.
8cd39fb3	9
4936186e	10	;; GNU Emacs is free software: you can redistribute it and/or modify
09aa73e6	11	;; it under the terms of the GNU General Public License as published by
4936186e GM	12	;; the Free Software Foundation, either version 3 of the License, or
4936186e GM	13	;; (at your option) any later version.
8cd39fb3	14
09aa73e6 GM	15	;; GNU Emacs is distributed in the hope that it will be useful,
	16	;; but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	;; GNU General Public License for more details.
	19
	20	;; You should have received a copy of the GNU General Public License
4936186e	21	;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
8cd39fb3 MH	22
	23	;;; Commentary:
	24
	25	;;; Code:
	26
	27	(defun rng-file-name-uri (f)
	28	"Return a URI for the filename F.
10545bd8	29	Multibyte characters are left as is. Use `rng-uri-escape-multibyte' to
8cd39fb3 MH	30	escape them using %HH."
	31	(setq f (expand-file-name f))
	32	(let ((url
	33	(replace-regexp-in-string "[\000-\032\177<>#%\"{}\|\\^[]`%?;]"
	34	'rng-percent-encode
	35	f)))
	36	(concat "file:"
	37	(if (and (> (length url) 0)
	38	(= (aref url 0) ?/))
	39	"//"
	40	"///")
	41	url)))
	42
	43	(defun rng-uri-escape-multibyte (uri)
	44	"Escape multibyte characters in URI."
	45	(replace-regexp-in-string "[:nonascii:]"
	46	'rng-percent-encode
	47	(encode-coding-string uri 'utf-8)))
	48
	49	(defun rng-percent-encode (str)
	50	(apply 'concat
	51	(mapcar (lambda (ch)
	52	(format "%%%x%x" (/ ch 16) (% ch 16)))
	53	(string-to-list str))))
	54
	55
	56	(defun rng-uri-file-name (uri)
	57	"Return the filename represented by a URI.
	58	Signal an error if URI is not a valid file URL."
	59	(rng-uri-file-name-1 uri nil))
	60
	61	(defun rng-uri-pattern-file-name-regexp (pattern)
	62	"Return a regexp for filenames represented by URIs that match PATTERN."
	63	(rng-uri-file-name-1 pattern 'match))
	64
	65	(defun rng-uri-pattern-file-name-replace-match (pattern)
	66	(rng-uri-file-name-1 pattern 'replace))
	67
	68	;; pattern is either nil or match or replace
	69	(defun rng-uri-file-name-1 (uri pattern)
	70	(unless (string-match "\\`\\(?:[^%]\\\|%[0-9a-fA-F]{2}\\)*\\'" uri)
	71	(rng-uri-error "Bad escapes in URI `%s'" uri))
	72	(setq uri (rng-uri-unescape-multibyte uri))
	73	(let* ((components
	74	(or (rng-uri-split uri)
	75	(rng-uri-error "Cannot split URI `%s' into its components" uri)))
	76	(scheme (nth 0 components))
	77	(authority (nth 1 components))
	78	(path (nth 2 components))
	79	(absolutep (string-match "\\`/" path))
	80	(query (nth 3 components))
	81	(fragment-id (nth 4 components)))
	82	(cond ((not scheme)
	83	(unless pattern
	84	(rng-uri-error "URI `%s' does not have a scheme" uri)))
	85	((not (string= (downcase scheme) "file"))
	86	(rng-uri-error "URI `%s' does not use the `file:' scheme" uri)))
	87	(when (not (member authority
	88	(cons system-name '(nil "" "localhost"))))
	89	(rng-uri-error "URI `%s' does not start with `file:///' or `file://localhost/'"
	90	uri))
	91	(when query
	92	(rng-uri-error "`?' not escaped in file URI `%s'" uri))
	93	(when fragment-id
94	(rng-uri-error "URI `%s' has a fragment identifier" uri))
95	(when (string-match ";" path)
96	(rng-uri-error "`;' not escaped in URI `%s'" uri))
97	(when (string-match "%2[fF]" path) ;; 2f is hex code of slash
98	(rng-uri-error "Escaped slash in URI `%s'" uri))
99	(when (and (eq system-type 'windows-nt)
100	absolutep
101	(file-name-absolute-p (substring path 1)))
102	(setq path (substring path 1)))
103	(when (and pattern (string-match "\\`\\./" path))
104	(setq path (substring path 2)))
10545bd8	105	(setq path
8cd39fb3 MH	106	(cond ((eq pattern 'match)
	107	(rng-uri-unescape-unibyte-match path))
	108	((eq pattern 'replace)
	109	(rng-uri-unescape-unibyte-replace path 2))
	110	(t
	111	(rng-uri-unescape-unibyte path))))
	112	(when (string-match "\000" path)
	113	(rng-uri-error "URI `%s' has NUL character in path" uri))
	114	(when (eq pattern 'match)
	115	(setq path
	116	(concat (if absolutep
	117	"\\(\\)"
	118	"\\(\\(?:[^/]/\\)\\)")
	119	path)))
	120	(cond ((eq pattern 'match)
	121	(concat "\\`" path "\\'"))
	122	((and (eq pattern 'replace)
	123	(not absolutep))
	124	(concat "\\1" path))
	125	(t path))))
	126
	127	(defun rng-uri-error (&rest args)
	128	(signal 'rng-uri-error (list (apply 'format args))))
	129
	130	(put 'rng-uri-error 'error-conditions '(error rng-uri-error))
	131	(put 'rng-uri-error 'error-message "Invalid URI")
	132
	133	(defun rng-uri-split (str)
	134	(and (string-match "\\`\\(?:\\([^:/?#]+\\):\\)?\
	135	\\(?://\\([^/?#]*\\)\\)?\
	136	\\([^?#]*\\)\
	137	\\(?:\\?\\([^#]*\\)\\)?\
	138	\\(?:#\\(\\(?:.\\\|\n\\)*\\)\\)?\\'"
	139	str)
	140	(list (match-string 1 str)
	141	(match-string 2 str)
	142	(match-string 3 str)
	143	(match-string 4 str)
	144	(match-string 5 str))))
	145
	146	(defun rng-uri-join (scheme authority path &optional query fragment-id)
	147	(when path
	148	(let (parts)
	149	(when fragment-id
	150	(setq parts (list "#" fragment-id)))
	151	(when query
	152	(setq parts
	153	(cons "?"
	154	(cons query parts))))
	155	(setq parts (cons path parts))
	156	(when authority
	157	(setq parts
	158	(cons "//"
	159	(cons authority parts))))
	160	(when scheme
	161	(setq parts
	162	(cons scheme
	163	(cons ":" parts))))
	164	(apply 'concat parts))))
10545bd8	165
8cd39fb3 MH	166	(defun rng-uri-resolve (uri-ref base-uri)
	167	"Resolve a possibly relative URI reference into absolute form.
	168	URI-REF is the URI reference to be resolved.
	169	BASE-URI is the base URI to use for resolving it.
	170	The algorithm is specified by RFC 2396.
	171	If there is some problem with URI-REF or BASE-URI, then
	172	URI-REF will be returned."
	173	(let* ((components (rng-uri-split uri-ref))
	174	(scheme (nth 0 components))
	175	(authority (nth 1 components))
	176	(path (nth 2 components))
	177	(query (nth 3 components))
	178	(fragment-id (nth 4 components))
	179	(base-components (rng-uri-split base-uri)))
	180	(if (or (not components)
	181	scheme
	182	(not base-components)
	183	(not (nth 0 base-components)))
	184	uri-ref
	185	(setq scheme (nth 0 base-components))
	186	(when (not authority)
	187	(setq authority (nth 1 base-components))
	188	(if (and (equal path "") (not query))
	189	;; Handle same document reference by returning
	190	;; same URI (RFC 2396bis does this too).
	191	(setq path (nth 2 base-components)
	192	query (nth 3 base-components))
	193	(setq path (rng-resolve-path path (nth 2 base-components)))))
	194	(rng-uri-join scheme
	195	authority
	196	path
	197	query
	198	fragment-id))))
	199
	200	;; See RFC 2396 5.2, steps 5 and 6
	201	(defun rng-resolve-path (path base-path)
	202	;; Step 5
	203	(if (or (string-match "\\`/" path)
	204	(not (string-match "\\`/" base-path)))
	205	path
	206	;; Step 6
	207	;; (a), (b)
	208	(let ((segments (rng-split-path path))
	209	(base-segments (rng-split-path base-path)))
	210	(if (> (length base-segments) 1)
	211	(setq segments (nconc (nbutlast base-segments)
	212	segments))
	213	(setcar segments
	214	(concat (car base-segments) (car segments))))
	215	;; (d)
	216	(let ((last-segment (last segments)))
	217	(when (equal (car last-segment) ".")
	218	(setcar last-segment "")))
	219	;; (c)
	220	(setq segments (delete "." segments))
	221	;; (e)
	222	(let (iter matched)
	223	(while (progn
	224	(setq matched nil)
	225	(setq iter (cdr segments))
	226	(while (and iter (not matched))
	227	(if (or (not (equal (cadr iter) ".."))
	228	(equal (car iter) ".."))
	229	(setq iter (cdr iter))
230	(setcar iter nil)
231	(setcar (cdr iter)
232	;; (f)
233	(if (cddr iter) nil ""))
234	(setq matched t)
235	(setq segments (delq nil segments))))
236	matched)))
237	(rng-join-path segments))))
238
239	(defun rng-relative-uri (full base)
240	"Return a URI that relative to BASE is equivalent to FULL.
241	The returned URI will be relative if possible.
242	Both FULL and BASE must be absolute URIs."
243	(let* ((components (rng-uri-split full))
244	(scheme (nth 0 components))
245	(authority (nth 1 components))
246	(path (nth 2 components))
247	(query (nth 3 components))
248	(fragment-id (nth 4 components))
249	(base-components (rng-uri-split base)))
250	(if (and components
251	base-components
252	scheme
253	(equal scheme
254	(nth 0 base-components)))
255	(progn
256	(setq scheme nil)
257	(when (and authority
258	(equal authority
259	(nth 1 base-components)))
260	(setq authority nil)
261	(setq path (rng-relative-path path (nth 2 base-components))))
262	(rng-uri-join scheme authority path query fragment-id))
263	full)))
264
265	(defun rng-relative-path (path base-path)
266	(let ((segments (rng-split-path path))
267	(base-segments (rng-split-path base-path)))
268	(when (> (length base-segments) 1)
269	(setq base-segments (nbutlast base-segments)))
270	(if (or (member "." segments)
271	(member ".." segments)
272	(member "." base-segments)
273	(member ".." base-segments))
274	path
275	(while (and segments
276	base-segments
277	(string= (car segments)
278	(car base-segments)))
279	(setq segments (cdr segments))
280	(setq base-segments (cdr base-segments)))
281	(while base-segments
282	(setq base-segments (cdr base-segments))
283	(setq segments (cons ".." segments)))
284	(when (equal (car segments) "")
285	(setq segments (cons "." segments)))
286	(rng-join-path segments))))
287
288	(defun rng-split-path (path)
289	(let ((start 0)
290	segments)
291	(while (string-match "/" path start)
292	(setq segments (cons (substring path start (match-beginning 0))
293	segments))
294	(setq start (match-end 0)))
295	(nreverse (cons (substring path start) segments))))
296
297	(defun rng-join-path (segments)
298	(and segments
299	(mapconcat 'identity segments "/")))
300
301	(defun rng-uri-unescape-multibyte (str)
302	(replace-regexp-in-string "\\(?:%[89a-fA-F][0-9a-fA-F]\\)+"
303	'rng-multibyte-percent-decode
304	str))
305
306	(defun rng-multibyte-percent-decode (str)
307	(decode-coding-string (apply 'string
308	(mapcar (lambda (h) (string-to-number h 16))
309	(split-string str "%")))
310	'utf-8))
10545bd8	311
8cd39fb3 MH	312	(defun rng-uri-unescape-unibyte (str)
	313	(replace-regexp-in-string "%[0-7][0-9a-fA-F]"
	314	(lambda (h)
	315	(string-to-number (substring h 1) 16))
	316	str
	317	t
	318	t))
	319
	320	(defun rng-uri-unescape-unibyte-match (str)
	321	(replace-regexp-in-string "%[0-7][0-9a-fA-F]\\\|[^%]"
	322	(lambda (match)
	323	(if (string= match "*")
	324	"\\([^/]*\\)"
	325	(regexp-quote
	326	(if (= (length match) 1)
	327	match
	328	(string-to-number (substring match 1)
	329	16)))))
	330	str
	331	t
	332	t))
	333
	334	(defun rng-uri-unescape-unibyte-replace (str next-match-index)
	335	(replace-regexp-in-string
	336	"%[0-7][0-9a-fA-F]\\\|[^%]"
	337	(lambda (match)
	338	(if (string= match "*")
	339	(let ((n next-match-index))
	340	(setq next-match-index (1+ n))
	341	(format "\\%s" n))
	342	(let ((ch (if (= (length match) 1)
	343	(aref match 0)
	344	(string-to-number (substring match 1)
	345	16))))
	346	(if (eq ch ?\\)
	347	(string ?\\ ?\\)
	348	(string ch)))))
	349	str
	350	t
	351	t))
	352
	353	(provide 'rng-uri)
	354
	355	;;; rng-uri.el ends here