;;; 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
;; <Utility functions>
;;
-(defun html2text-buffer-head ()
- (if (string= mode-name "Article")
- (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)
-
- (unless (string-match "=" prev)
- (unless (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)))
-
- (when this
- (unless (string-match "=" this)
- (unless (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>
;;
(goto-char p1)
(let ((item-nr 0)
(items 0))
- (while (re-search-forward "<li>" p2 t)
+ (while (search-forward "<li>" p2 t)
(setq items (1+ items)))
(goto-char p1)
(while (< item-nr items)
(setq item-nr (1+ item-nr))
- (re-search-forward "<li>" (point-max) t)
+ (search-forward "<li>" (point-max) t)
(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)
(let ((items 0)
(item-nr 0))
- (while (re-search-forward "<dt>" p2 t)
+ (while (search-forward "<dt>" p2 t)
(setq items (1+ items)))
(goto-char p1)
(while (< item-nr items)
(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)
"This _tries_ to fix up the paragraphs - this is done in quite a ad-hook
fashion, quite close to pure guess-work. It does work in some cases though."
(interactive)
- (html2text-buffer-head)
+ (goto-char (point-min))
(replace-regexp "^<br>$" "")
;; Removing lonely <br> on a single line, if they are left intact we
;; dont have any paragraphs at all.
- (html2text-buffer-head)
+ (goto-char (point-min))
(while (not (eobp))
(let ((p1 (point)))
(forward-paragraph 1)
See the documentation for that variable."
(interactive)
(dolist (tag tag-list)
- (html2text-buffer-head)
- (while (re-search-forward (format "</?%s[^>]*>" tag) (point-max) t)
+ (goto-char (point-min))
+ (while (re-search-forward (format "\\(</?%s[^>]*>\\)" tag) (point-max) t)
(delete-region (match-beginning 0) (match-end 0)))))
(defun html2text-format-tags ()
(dolist (tag-and-function html2text-format-tag-list)
(let ((tag (car tag-and-function))
(function (cdr tag-and-function)))
- (html2text-buffer-head)
- (while (re-search-forward (format "<%s\\( [^>]*\\)?>" tag)
+ (goto-char (point-min))
+ (while (re-search-forward (format "\\(<%s\\( [^>]*\\)?>\\)" tag)
(point-max) t)
(let ((p1)
(p2 (point))
(attr (match-string 0)))
(search-backward "<" (point-min) t)
(setq p1 (point))
- (re-search-forward (format "</%s>" tag) (point-max) t)
+ (search-forward (format "</%s>" tag) (point-max) t)
(setq p4 (point))
(search-backward "</" (point-min) t)
(setq p3 (point))
(funcall function p1 p2 p3 p4)
(goto-char p1)
- )
- )
- )
- )
- )
+ )))))
(defun html2text-substitute ()
"See the variable \"html2text-replace-list\" for documentation"
(interactive)
(dolist (e html2text-replace-list)
- (html2text-buffer-head)
+ (goto-char (point-min))
(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 ()
""
(dolist (tag-and-function html2text-format-single-element-list)
(let ((tag (car tag-and-function))
(function (cdr tag-and-function)))
- (html2text-buffer-head)
- (while (re-search-forward (format "<%s\\( [^>]*\\)?>" tag)
+ (goto-char (point-min))
+ (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