1 ;;; rng-util.el --- utility functions for RELAX NG library
3 ;; Copyright (C) 2003, 2007, 2008 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, or (at your option)
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; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 ;; Boston, MA 02110-1301, USA.
29 (defun rng-make-datatypes-uri (uri)
30 (if (string-equal uri "")
31 ;; The spec doesn't say to do this, but it's perfectly conformant
32 ;; and better than using nil, I think.
33 'http://relaxng.org/ns/structure/1.0
36 (defconst rng-xsd-datatypes-uri
37 (rng-make-datatypes-uri "http://www.w3.org/2001/XMLSchema-datatypes"))
39 (defconst rng-builtin-datatypes-uri (rng-make-datatypes-uri ""))
41 (defun rng-uniquify-eq (list)
42 "Destructively remove any element from LIST that is eq to
47 (if (eq (car head) (cadr head))
48 (setcdr head (cddr head)))
49 (setq head (cdr head)))
52 (defun rng-uniquify-equal (list)
53 "Destructively remove any element from LIST that is equal to
58 (if (equal (car head) (cadr head))
59 (setcdr head (cddr head)))
60 (setq head (cdr head)))
63 (defun rng-blank-p (str) (string-match "\\`[ \t\n\r]*\\'" str))
65 (defun rng-substq (new old list)
66 "Replace first member of LIST (if any) that is eq to OLD by NEW.
67 LIST is not modified."
68 (cond ((null list) nil)
70 (cons new (cdr list)))
72 (let ((tail (cons (car list)
77 (let ((item (car rest)))
78 (setq rest (cdr rest))
86 (cons item nil))))))))
89 (defun rng-complete-before-point (start table prompt &optional predicate hist)
90 "Complete text between START and point.
91 Replaces the text between START and point with a string chosen using a
92 completion table and, when needed, input read from the user with the
94 Returns the new string if either a complete and unique completion was
95 determined automatically or input was read from the user. Otherwise,
97 TABLE is an alist, a symbol bound to a function or an obarray as with
98 the function `completing-read'.
99 PROMPT is the string to prompt with if user input is needed.
100 PREDICATE is nil or a function as with `completing-read'.
101 HIST, if non-nil, specifies a history list as with `completing-read'."
102 (let* ((orig (buffer-substring-no-properties start (point)))
103 (completion (try-completion orig table predicate)))
104 (cond ((not completion)
105 (if (string= orig "")
106 (message "No completions available")
107 (message "No completion for %s" (rng-quote-string orig)))
110 ((eq completion t) orig)
111 ((not (string= completion orig))
112 (delete-region start (point))
114 (cond ((not (rng-completion-exact-p completion table predicate))
115 (message "Incomplete")
117 ((eq (try-completion completion table predicate) t)
120 (message "Complete but not unique")
124 (let ((saved-minibuffer-setup-hook
125 (default-value 'minibuffer-setup-hook)))
126 (add-hook 'minibuffer-setup-hook
127 'minibuffer-completion-help
130 (completing-read prompt
136 (setq-default minibuffer-setup-hook
137 saved-minibuffer-setup-hook))))
138 (delete-region start (point))
142 (defun rng-completion-exact-p (string table predicate)
143 (cond ((symbolp table)
144 (funcall table string predicate 'lambda))
146 (intern-soft string table))
147 (t (assoc string table))))
149 (defun rng-quote-string (s)
150 (concat "\"" s "\""))
152 (defun rng-escape-string (s)
153 (replace-regexp-in-string "[&\"<>]"
163 (defun rng-collapse-space (string)
165 (replace-regexp-in-string "[ \t\r\n]+" " " string t t))
166 (when (string-match "\\` " string)
167 (setq string (substring string 1)))
168 (when (string-match " \\'" string)
169 (setq string (substring string 0 -1)))
174 ;; arch-tag: 2dc233e0-5e7a-488f-bfc4-5909512dbaf0
175 ;;; rng-util.el ends here