mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-29 07:58:28 +00:00
95 lines
3.1 KiB
EmacsLisp
95 lines
3.1 KiB
EmacsLisp
;;; nxml-util.el --- utility functions for nxml-*.el -*- lexical-binding:t -*-
|
|
|
|
;; Copyright (C) 2003, 2007-2020 Free Software Foundation, Inc.
|
|
|
|
;; Author: James Clark
|
|
;; Keywords: wp, hypermedia, languages, 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 <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; Code:
|
|
|
|
(defconst nxml-debug nil
|
|
"Enable nxml debugging. Effective only at compile time.")
|
|
|
|
(defsubst nxml-debug (format &rest args)
|
|
(when nxml-debug
|
|
(apply #'message format args)))
|
|
|
|
(defmacro nxml-debug-change (name start end)
|
|
(when nxml-debug
|
|
`(nxml-debug "%s: %S" ,name
|
|
(buffer-substring-no-properties ,start ,end))))
|
|
|
|
(defun nxml-make-namespace (str)
|
|
"Return a symbol for the namespace URI STR.
|
|
STR must be a string. If STR is the empty string, return nil.
|
|
Otherwise, return the symbol whose name is STR prefixed with a colon."
|
|
(if (string-equal str "")
|
|
nil
|
|
(intern (concat ":" str))))
|
|
|
|
(defun nxml-namespace-name (ns)
|
|
"Return the namespace URI corresponding to the symbol NS.
|
|
This is the inverse of `nxml-make-namespace'."
|
|
(and ns (substring (symbol-name ns) 1)))
|
|
|
|
(defconst nxml-xml-namespace-uri
|
|
(nxml-make-namespace "http://www.w3.org/XML/1998/namespace"))
|
|
|
|
(defconst nxml-xmlns-namespace-uri
|
|
(nxml-make-namespace "http://www.w3.org/2000/xmlns/"))
|
|
|
|
(defmacro nxml-with-degradation-on-error (context &rest body)
|
|
(declare (indent 1) (debug t))
|
|
(if (not nxml-debug)
|
|
(let ((error-symbol (make-symbol "err")))
|
|
`(condition-case ,error-symbol
|
|
(progn ,@body)
|
|
(error
|
|
(nxml-degrade ,context ,error-symbol))))
|
|
`(progn ,@body)))
|
|
|
|
(defmacro nxml-with-invisible-motion (&rest body)
|
|
"Evaluate body without calling any point motion hooks."
|
|
(declare (indent 0) (debug t))
|
|
`(let ((inhibit-point-motion-hooks t))
|
|
,@body))
|
|
|
|
(defun nxml-display-file-parse-error (err)
|
|
(let* ((filename (nth 1 err))
|
|
(buffer (find-file-noselect filename))
|
|
(pos (nth 2 err))
|
|
(message (nth 3 err)))
|
|
(pop-to-buffer buffer)
|
|
;; What's the right thing to do if the buffer's modified?
|
|
;; The position in the saved file could be completely different.
|
|
(goto-char (if (buffer-modified-p) 1 pos))
|
|
(error "%s" message)))
|
|
|
|
(defun nxml-signal-file-parse-error (file pos message &optional error-symbol)
|
|
(signal (or error-symbol 'nxml-file-parse-error)
|
|
(list file pos message)))
|
|
|
|
(define-error 'nxml-error nil)
|
|
(define-error 'nxml-file-parse-error "Error parsing file" 'nxml-error)
|
|
|
|
(provide 'nxml-util)
|
|
|
|
;;; nxml-util.el ends here
|