Function: mh-thread-generate-scan-lines

mh-thread-generate-scan-lines is a byte-compiled function defined in mh-thread.el.gz.

Signature

(mh-thread-generate-scan-lines TREE LEVEL)

Documentation

Generate scan lines.

TREE is the hierarchical tree of messages, SCAN-LINE-MAP maps message indices to the corresponding scan lines and LEVEL used to determine indentation of the message.

Source Code

;; Defined in /usr/src/emacs/lisp/mh-e/mh-thread.el.gz
(defun mh-thread-generate-scan-lines (tree level)
  "Generate scan lines.
TREE is the hierarchical tree of messages, SCAN-LINE-MAP maps
message indices to the corresponding scan lines and LEVEL used to
determine indentation of the message."
  (cond ((null tree) nil)
        ((mh-thread-container-p tree)
         (let* ((message (mh-container-message tree))
                (id (mh-message-id message))
                (index (gethash id mh-thread-id-index-map))
                (duplicates (gethash id mh-thread-duplicates))
                (new-level (+ level 2))
                (dupl-flag t)
                (force-angle-flag nil)
                (increment-level-flag nil))
           (dolist (scan-line (mapcar (lambda (x)
                                        (gethash x mh-thread-scan-line-map))
                                      (reverse (cons index duplicates))))
             (when scan-line
               (when (and dupl-flag (equal level 0)
                          (mh-thread-ancestor-p mh-thread-last-ancestor tree))
                 (setq level (+ level 2)
                       new-level (+ new-level 2)
                       force-angle-flag t))
               (when (equal level 0)
                 (setq mh-thread-last-ancestor tree)
                 (while (mh-container-parent mh-thread-last-ancestor)
                   (setq mh-thread-last-ancestor
                         (mh-container-parent mh-thread-last-ancestor))))
               (let* ((lev (if dupl-flag level new-level))
                      (square-flag (or (and (mh-container-real-child-p tree)
                                            (not force-angle-flag)
                                            dupl-flag)
                                       (equal lev 0))))
                 (insert (car scan-line)
                         (format (format "%%%ss" lev) "")
                         (if square-flag "[" "<")
                         (cadr scan-line)
                         (if square-flag "]" ">")
                         (truncate-string-to-width
                          (caddr scan-line) (- mh-thread-body-width lev))
                         "\n"))
               (setq increment-level-flag t)
               (setq dupl-flag nil)))
           (unless increment-level-flag (setq new-level level))
           (dolist (child (mh-container-children tree))
             (mh-thread-generate-scan-lines child new-level))))
        (t (let ((nlevel (+ level 2)))
             (dolist (ch tree)
               (mh-thread-generate-scan-lines ch nlevel))))))