1 ;;; rng-util.el --- utility functions for RELAX NG library
3 ;; Copyright (C) 2003, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Keywords: XML, RelaxNG
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
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.
20 ;; 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/>.
27 (defun rng-make-datatypes-uri (uri)
28 (if (string-equal uri "")
29 ;; The spec doesn't say to do this, but it's perfectly conformant
30 ;; and better than using nil, I think.
31 'http://relaxng.org/ns/structure/1.0
34 (defconst rng-xsd-datatypes-uri
35 (rng-make-datatypes-uri "http://www.w3.org/2001/XMLSchema-datatypes"))
37 (defconst rng-builtin-datatypes-uri (rng-make-datatypes-uri ""))
39 (defun rng-uniquify-eq (list)
40 "Destructively remove `eq' duplicates from LIST."
44 (if (eq (car head) (cadr head))
45 (setcdr head (cddr head)))
46 (setq head (cdr head)))
49 (defun rng-uniquify-equal (list)
50 "Destructively remove `equal' duplicates from LIST."
54 (if (equal (car head) (cadr head))
55 (setcdr head (cddr head)))
56 (setq head (cdr head)))
59 (defun rng-blank-p (str) (string-match "\\`[ \t\n\r]*\\'" str))
61 (defun rng-substq (new old list)
62 "Replace first member of LIST (if any) that is `eq' to OLD by NEW.
63 LIST is not modified."
64 (cond ((null list) nil)
66 (cons new (cdr list)))
68 (let ((tail (cons (car list)
73 (let ((item (car rest)))
74 (setq rest (cdr rest))
82 (cons item nil))))))))
85 (defun rng-complete-before-point (start table prompt &optional predicate hist)
86 "Complete text between START and point.
87 Replaces the text between START and point with a string chosen using a
88 completion table and, when needed, input read from the user with the
90 Returns the new string if either a complete and unique completion was
91 determined automatically or input was read from the user. Otherwise,
93 TABLE is an alist, a symbol bound to a function or an obarray as with
94 the function `completing-read'.
95 PROMPT is the string to prompt with if user input is needed.
96 PREDICATE is nil or a function as with `completing-read'.
97 HIST, if non-nil, specifies a history list as with `completing-read'."
98 (let* ((orig (buffer-substring-no-properties start (point)))
99 (completion (try-completion orig table predicate)))
100 (cond ((not completion)
101 (if (string= orig "")
102 (message "No completions available")
103 (message "No completion for %s" (rng-quote-string orig)))
106 ((eq completion t) orig)
107 ((not (string= completion orig))
108 (delete-region start (point))
110 (cond ((not (rng-completion-exact-p completion table predicate))
111 (message "Incomplete")
113 ((eq (try-completion completion table predicate) t)
116 (message "Complete but not unique")
120 (let ((saved-minibuffer-setup-hook
121 (default-value 'minibuffer-setup-hook)))
122 (add-hook 'minibuffer-setup-hook
123 'minibuffer-completion-help
126 (completing-read prompt
132 (setq-default minibuffer-setup-hook
133 saved-minibuffer-setup-hook))))
134 (delete-region start (point))
138 (defun rng-completion-exact-p (string table predicate)
139 (cond ((symbolp table)
140 (funcall table string predicate 'lambda))
142 (intern-soft string table))
143 (t (assoc string table))))
145 (defun rng-quote-string (s)
146 (concat "\"" s "\""))
148 (defun rng-escape-string (s)
149 (replace-regexp-in-string "[&\"<>]"
159 (defun rng-collapse-space (string)
161 (replace-regexp-in-string "[ \t\r\n]+" " " string t t))
162 (when (string-match "\\` " string)
163 (setq string (substring string 1)))
164 (when (string-match " \\'" string)
165 (setq string (substring string 0 -1)))
170 ;; arch-tag: 2dc233e0-5e7a-488f-bfc4-5909512dbaf0
171 ;;; rng-util.el ends here