;;; html2text.el --- a simple html to plain text converter
-;; Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+;; Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
;; Author: Joakim Hove <hove@phys.ntnu.no>
(defvar html2text-format-single-element-list '(("hr" . html2text-clean-hr)))
(defvar html2text-replace-list
- '((" " . " ") (">" . ">") ("<" . "<") (""" . "\""))
+ '((" " . " ") (">" . ">") ("<" . "<") (""" . "\"")
+ ("&" . "&") ("'" . "'"))
"The map of entity to text.
This is an alist were each element is a dotted pair consisting of an
(defun html2text-buffer-head ()
(if (string= mode-name "Article")
(beginning-of-buffer)
- (beginning-of-buffer)
- )
- )
+ (beginning-of-buffer)))
(defun html2text-replace-string (from-string to-string p1 p2)
(goto-char p1)
(change 0))
(while (search-forward from-string p2 t)
(replace-match to-string)
- (setq change (+ change delta))
- )
- change
- )
- )
+ (setq change (+ change delta)))
+ change))
;;
;; </Utility functions>
;;
(defun html2text-attr-value (attr-list attr)
- (nth 1 (assoc attr attr-list))
- )
-
-(defun html2text-get-attr (p1 p2 tag)
- (goto-char p1)
- (re-search-forward " +[^ ]" p2 t)
- (let* ((attr-string (buffer-substring-no-properties (1- (point)) (1- p2)))
- (tmp-list (split-string attr-string))
- (attr-list)
- (counter 0)
- (prev (car tmp-list))
- (this (nth 1 tmp-list))
- (next (nth 2 tmp-list))
- (index 1))
-
- (cond
- ;; size=3
- ((string-match "[^ ]=[^ ]" prev)
- (let ((attr (nth 0 (split-string prev "=")))
- (value (nth 1 (split-string prev "="))))
- (setq attr-list (cons (list attr value) attr-list))
- )
- )
- ;; size= 3
- ((string-match "[^ ]=\\'" prev)
- (setq attr-list (cons (list (substring prev 0 -1) this) attr-list))
- )
- )
-
- (while (< index (length tmp-list))
- (cond
- ;; size=3
- ((string-match "[^ ]=[^ ]" this)
- (let ((attr (nth 0 (split-string this "=")))
- (value (nth 1 (split-string this "="))))
- (setq attr-list (cons (list attr value) attr-list))
- )
- )
- ;; size =3
- ((string-match "\\`=[^ ]" this)
- (setq attr-list (cons (list prev (substring this 1)) attr-list)))
-
- ;; size= 3
- ((string-match "[^ ]=\\'" this)
- (setq attr-list (cons (list (substring this 0 -1) next) attr-list))
- )
-
- ;; size = 3
- ((string= "=" this)
- (setq attr-list (cons (list prev next) attr-list))
- )
- )
- (setq index (1+ index))
- (setq prev this)
- (setq this next)
- (setq next (nth (1+ index) tmp-list))
- )
-
- ;;
- ;; Tags with no accompanying "=" i.e. value=nil
- ;;
- (setq prev (car tmp-list))
- (setq this (nth 1 tmp-list))
- (setq next (nth 2 tmp-list))
- (setq index 1)
-
- (if (not (string-match "=" prev))
- (progn
- (if (not (string= (substring this 0 1) "="))
- (setq attr-list (cons (list prev nil) attr-list))
- )
- )
- )
-
- (while (< index (1- (length tmp-list)))
- (if (not (string-match "=" this))
- (if (not (or (string= (substring next 0 1) "=")
- (string= (substring prev -1) "=")))
- (setq attr-list (cons (list this nil) attr-list))
- )
- )
- (setq index (1+ index))
- (setq prev this)
- (setq this next)
- (setq next (nth (1+ index) tmp-list))
- )
-
- (if this
- (progn
- (if (not (string-match "=" this))
- (progn
- (if (not (string= (substring prev -1) "="))
- (setq attr-list (cons (list this nil) attr-list))
- )
- )
- )
- )
- )
- attr-list ;; return - value
- )
- )
-
+ (nth 1 (assoc attr attr-list)))
+
+(defun html2text-get-attr (p1 p2)
+ (save-restriction
+ (narrow-to-region p1 p2)
+ (let (result)
+ (goto-char (point-min))
+ (while (not (eobp))
+ (when (re-search-forward "[^= ]+" nil t)
+ (push
+ (list
+ (match-string 0)
+ (when (looking-at " *= *")
+ (goto-char (match-end 0))
+ (buffer-substring
+ (point)
+ (goto-char (or (ignore-errors (scan-sexps (point) 1))
+ (point-max))))))
+ result)))
+ result)))
;;
;; </Functions related to attributes>
;;
(cond
((string= list-type "ul") (insert " o "))
((string= list-type "ol") (insert (format " %s: " item-nr)))
- (t (insert " x ")))
- )
- )
- )
+ (t (insert " x "))))))
(defun html2text-clean-dtdd (p1 p2)
(goto-char p1)
(html2text-delete-single-tag p1 p2)
(goto-char p1)
(newline 1)
- (insert (make-string fill-column ?-))
- )
+ (insert (make-string fill-column ?-)))
(defun html2text-clean-ul (p1 p2 p3 p4)
(html2text-delete-tags p1 p2 p3 p4)
- (html2text-clean-list-items p1 (- p3 (- p1 p2)) "ul")
- )
+ (html2text-clean-list-items p1 (- p3 (- p1 p2)) "ul"))
(defun html2text-clean-ol (p1 p2 p3 p4)
(html2text-delete-tags p1 p2 p3 p4)
- (html2text-clean-list-items p1 (- p3 (- p1 p2)) "ol")
- )
+ (html2text-clean-list-items p1 (- p3 (- p1 p2)) "ol"))
(defun html2text-clean-dl (p1 p2 p3 p4)
(html2text-delete-tags p1 p2 p3 p4)
- (html2text-clean-dtdd p1 (- p3 (- p1 p2)))
- )
+ (html2text-clean-dtdd p1 (- p3 (- p1 p2))))
(defun html2text-clean-center (p1 p2 p3 p4)
(html2text-delete-tags p1 p2 p3 p4)
- (center-region p1 (- p3 (- p2 p1)))
- )
+ (center-region p1 (- p3 (- p2 p1))))
(defun html2text-clean-bold (p1 p2 p3 p4)
(put-text-property p2 p3 'face 'bold)
- (html2text-delete-tags p1 p2 p3 p4)
- )
+ (html2text-delete-tags p1 p2 p3 p4))
(defun html2text-clean-title (p1 p2 p3 p4)
(put-text-property p2 p3 'face 'bold)
- (html2text-delete-tags p1 p2 p3 p4)
- )
+ (html2text-delete-tags p1 p2 p3 p4))
(defun html2text-clean-underline (p1 p2 p3 p4)
(put-text-property p2 p3 'face 'underline)
- (html2text-delete-tags p1 p2 p3 p4)
- )
+ (html2text-delete-tags p1 p2 p3 p4))
(defun html2text-clean-italic (p1 p2 p3 p4)
(put-text-property p2 p3 'face 'italic)
- (html2text-delete-tags p1 p2 p3 p4)
- )
+ (html2text-delete-tags p1 p2 p3 p4))
(defun html2text-clean-font (p1 p2 p3 p4)
- (html2text-delete-tags p1 p2 p3 p4)
- )
+ (html2text-delete-tags p1 p2 p3 p4))
(defun html2text-clean-blockquote (p1 p2 p3 p4)
- (html2text-delete-tags p1 p2 p3 p4)
- )
+ (html2text-delete-tags p1 p2 p3 p4))
(defun html2text-clean-anchor (p1 p2 p3 p4)
;; If someone can explain how to make the URL clickable I will
;; surely improve upon this.
- (let* ((attr-list (html2text-get-attr p1 p2 "a"))
- (href (html2text-attr-value attr-list "href")))
+ (let ((href (html2text-attr-value (html2text-get-attr p1 p2) "href")))
(delete-region p1 p4)
(when href
(goto-char p1)
(let ((has-br-line)
(refill-start)
(refill-stop))
- (if (re-search-forward "<br>$" p2 t)
- (setq has-br-line t)
- )
- (if has-br-line
- (progn
- (goto-char p1)
- (if (re-search-forward ".+[^<][^b][^r][^>]$" p2 t)
- (progn
- (beginning-of-line)
- (setq refill-start (point))
- (goto-char p2)
- (re-search-backward ".+[^<][^b][^r][^>]$" refill-start t)
- (next-line 1)
- (end-of-line)
- ;; refill-stop should ideally be adjusted to
- ;; accomodate the "<br>" strings which are removed
- ;; between refill-start and refill-stop. Can simply
- ;; be returned from my-replace-string
- (setq refill-stop (+ (point)
- (html2text-replace-string
- "<br>" ""
- refill-start (point))))
- ;; (message "Point = %s refill-stop = %s" (point) refill-stop)
- ;; (sleep-for 4)
- (fill-region refill-start refill-stop)
- )
- )
- )
- )
- )
- (html2text-replace-string "<br>" "" p1 p2)
- )
+ (when (re-search-forward "<br>$" p2 t)
+ (setq has-br-line t))
+ (when has-br-line
+ (goto-char p1)
+ (when (re-search-forward ".+[^<][^b][^r][^>]$" p2 t)
+ (beginning-of-line)
+ (setq refill-start (point))
+ (goto-char p2)
+ (re-search-backward ".+[^<][^b][^r][^>]$" refill-start t)
+ (next-line 1)
+ (end-of-line)
+ ;; refill-stop should ideally be adjusted to
+ ;; accomodate the "<br>" strings which are removed
+ ;; between refill-start and refill-stop. Can simply
+ ;; be returned from my-replace-string
+ (setq refill-stop (+ (point)
+ (html2text-replace-string
+ "<br>" ""
+ refill-start (point))))
+ ;; (message "Point = %s refill-stop = %s" (point) refill-stop)
+ ;; (sleep-for 4)
+ (fill-region refill-start refill-stop))))
+ (html2text-replace-string "<br>" "" p1 p2))
;;
;; This one is interactive ...
(interactive)
(dolist (tag tag-list)
(html2text-buffer-head)
- (while (re-search-forward (format "\\(</?%s[^>]*>\\)" tag) (point-max) t)
+ (while (re-search-forward (format "</?%s[^>]*>" tag) (point-max) t)
(delete-region (match-beginning 0) (match-end 0)))))
(defun html2text-format-tags ()
(let ((tag (car tag-and-function))
(function (cdr tag-and-function)))
(html2text-buffer-head)
- (while (re-search-forward (format "\\(<%s\\( [^>]*\\)?>\\)" tag)
+ (while (re-search-forward (format "<%s\\( [^>]*\\)?>" tag)
(point-max) t)
(let ((p1)
(p2 (point))
(p3) (p4)
- (attr (match-string 1)))
+ (attr (match-string 0)))
(search-backward "<" (point-min) t)
(setq p1 (point))
(re-search-forward (format "</%s>" tag) (point-max) t)
(setq p3 (point))
(funcall function p1 p2 p3 p4)
(goto-char p1)
- )
- )
- )
- )
- )
+ )))))
(defun html2text-substitute ()
"See the variable \"html2text-replace-list\" for documentation"
(html2text-buffer-head)
(let ((old-string (car e))
(new-string (cdr e)))
- (html2text-replace-string old-string new-string (point-min) (point-max))
- )
- )
- )
+ (html2text-replace-string old-string new-string (point-min) (point-max)))
+ ))
(defun html2text-format-single-elements ()
""
(let ((tag (car tag-and-function))
(function (cdr tag-and-function)))
(html2text-buffer-head)
- (while (re-search-forward (format "\\(<%s\\( [^>]*\\)?>\\)" tag)
+ (while (re-search-forward (format "<%s\\( [^>]*\\)?>" tag)
(point-max) t)
(let ((p1)
(p2 (point)))
(search-backward "<" (point-min) t)
(setq p1 (point))
- (funcall function p1 p2)
- )
- )
- )
- )
- )
+ (funcall function p1 p2))))))
;;
;; Main function
projects / elisp / gnus.git- / blobdiff