Function: xml--entity-replacement-text

xml--entity-replacement-text is a byte-compiled function defined in xml.el.gz.

Signature

(xml--entity-replacement-text STRING)

Documentation

Return the replacement text for the entity value STRING.

The replacement text is obtained by replacing character references and parameter-entity references.

Source Code

;; Defined in /usr/src/emacs/lisp/xml.el.gz
(defun xml--entity-replacement-text (string)
  "Return the replacement text for the entity value STRING.
The replacement text is obtained by replacing character
references and parameter-entity references."
  (let ((ref-re (eval-when-compile
		  (concat "\\(?:&#\\([0-9]+\\)\\|&#x\\([[:xdigit:]]+\\)\\|%\\("
			  xml-name-re "\\)\\);")))
	children)
    (while (string-match ref-re string)
      (push (substring string 0 (match-beginning 0)) children)
      (let ((remainder (substring string (match-end 0)))
	    ref val)
	(cond ((setq ref (match-string 1 string))
	       ;; Decimal character reference
               (setq val (string-to-number ref))
	       (if val (push (string val) children)))
	      ;; Hexadecimal character reference
	      ((setq ref (match-string 2 string))
               (setq val (string-to-number ref 16))
	       (if val (push (string val) children)))
	      ;; Parameter entity reference
	      ((setq ref (match-string 3 string))
	       (setq val (assoc ref xml-parameter-entity-alist))
	       (and (null val)
		    xml-validating-parser
		    (error "XML: (Validity) Undefined parameter entity `%s'" ref))
	       (push (or (cdr val) xml-undefined-entity) children)))
	(setq string remainder)))
    (mapconcat 'identity (nreverse (cons string children)) "")))