-;; The following macros and functions were written by Felix Lee
-;; <flee@cse.psu.edu>.
-
-(defmacro gnus-nov-read-integer ()
- '(prog1
- (if (= (following-char) ?\t)
- 0
- (let ((num (ignore-errors (read buffer))))
- (if (numberp num) num 0)))
- (unless (eobp)
- (search-forward "\t" eol 'move))))
-
-(defmacro gnus-nov-skip-field ()
- '(search-forward "\t" eol 'move))
-
-(defmacro gnus-nov-field ()
- '(buffer-substring (point) (if (gnus-nov-skip-field) (1- (point)) eol)))
-
-;; (defvar gnus-nov-none-counter 0)
-
-;; This function has to be called with point after the article number
-;; on the beginning of the line.
-(defun gnus-nov-parse-line (number dependencies &optional force-new)
- (let ((eol (gnus-point-at-eol))
- (buffer (current-buffer))
- header ref id id-dep ref-dep)
-
- ;; overview: [num subject from date id refs chars lines misc]
- (unwind-protect
- (progn
- (narrow-to-region (point) eol)
- (unless (eobp)
- (forward-char))
-
- (setq header
- (vector
- number ; number
- (funcall
- gnus-unstructured-field-decoder (gnus-nov-field)) ; subject
- (funcall
- gnus-structured-field-decoder (gnus-nov-field)) ; from
- (gnus-nov-field) ; date
- (setq id (or (gnus-nov-field)
- (nnheader-generate-fake-message-id))) ; id
- (progn
- (let ((beg (point)))
- (search-forward "\t" eol)
- (if (search-backward ">" beg t)
- (setq ref
- (buffer-substring
- (1+ (point))
- (or (search-backward "<" beg t) beg)))
- (setq ref nil))
- (goto-char beg))
- (gnus-nov-field)) ; refs
- (gnus-nov-read-integer) ; chars
- (gnus-nov-read-integer) ; lines
- (if (= (following-char) ?\n)
- nil
- (gnus-nov-field))))) ; misc
-
- (widen))
-
- (when gnus-alter-header-function
- (funcall gnus-alter-header-function header)
- (setq id (mail-header-id header)
- ref (gnus-parent-id (mail-header-references header))))
-
- ;; We build the thread tree.
- (when (equal id ref)
- ;; This article refers back to itself. Naughty, naughty.
- (setq ref nil))
- (if (boundp (setq id-dep (intern id dependencies)))
- (if (and (car (symbol-value id-dep))
- (not force-new))
- ;; An article with this Message-ID has already been seen.
- (if gnus-summary-ignore-duplicates
- ;; We ignore this one, except we add any additional
- ;; Xrefs (in case the two articles came from different
- ;; servers.
- (progn
- (mail-header-set-xref
- (car (symbol-value id-dep))
- (concat (or (mail-header-xref
- (car (symbol-value id-dep)))
- "")
- (or (mail-header-xref header) "")))
- (setq header nil))
- ;; We rename the Message-ID.
- (set
- (setq id-dep (intern (setq id (nnmail-message-id))
- dependencies))
- (list header))
- (mail-header-set-id header id))
- (setcar (symbol-value id-dep) header))
- (set id-dep (list header)))
- (when header
- (if (boundp (setq ref-dep (intern (or ref "none") dependencies)))
- (setcdr (symbol-value ref-dep)
- (nconc (cdr (symbol-value ref-dep))
- (list (symbol-value id-dep))))
- (set ref-dep (list nil (symbol-value id-dep)))))
- header))
-