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;;; geiser-table.el -- table creation
;; Copyright (C) 2009, 2010 Jose Antonio Ortega Ruiz
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the Modified BSD License. You should
;; have received a copy of the license along with this program. If
;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
;; Start date: Tue Jan 06, 2009 13:44
(defun geiser-table--col-widths (rows)
(let* ((col-no (length (car rows)))
(available (- (window-width) 2 (* 2 col-no)))
(widths)
(c 0))
(while (< c col-no)
(let ((width 0)
(av-width (- available (* 5 (- col-no c)))))
(dolist (row rows)
(setq width
(min av-width
(max width (length (nth c row))))))
(push width widths)
(setq available (- available width)))
(setq c (1+ c)))
(reverse widths)))
(defun geiser-table--pad-str (str width)
(let ((len (length str)))
(cond ((= len width) str)
((> len width) (concat (substring str 0 (- width 3)) "..."))
(t (concat str (make-string (- width (length str)) ?\ ))))))
(defun geiser-table--str-lines (str width)
(if (<= (length str) width)
(list (geiser-table--pad-str str width))
(with-temp-buffer
(let ((fill-column width))
(insert str)
(fill-region (point-min) (point-max))
(mapcar '(lambda (s) (geiser-table--pad-str s width))
(split-string (buffer-string) "\n"))))))
(defun geiser-table--pad-row (row)
(let* ((max-ln (apply 'max (mapcar 'length row)))
(result))
(dolist (lines row)
(let ((ln (length lines)))
(if (= ln max-ln) (push lines result)
(let ((lines (reverse lines))
(l 0)
(blank (make-string (length (car lines)) ?\ )))
(while (< l ln)
(push blank lines)
(setq l (1+ l)))
(push (reverse lines) result)))))
(reverse result)))
(defun geiser-table--format-rows (rows widths)
(let ((col-no (length (car rows)))
(frows))
(dolist (row rows)
(let ((c 0) (frow))
(while (< c col-no)
(push (geiser-table--str-lines (nth c row) (nth c widths)) frow)
(setq c (1+ c)))
(push (geiser-table--pad-row (reverse frow)) frows)))
(reverse frows)))
(defvar geiser-table-corner-lt "┌")
(defvar geiser-table-corner-lb "└")
(defvar geiser-table-corner-rt "┐")
(defvar geiser-table-corner-rb "┘")
(defvar geiser-table-line "─")
(defvar geiser-table-tee-t "┬")
(defvar geiser-table-tee-b "┴")
(defvar geiser-table-tee-l "├")
(defvar geiser-table-tee-r "┤")
(defvar geiser-table-crux "┼")
(defvar geiser-table-sep "│")
(defun geiser-table--insert-line (widths first last sep)
(insert first geiser-table-line)
(dolist (w widths)
(while (> w 0)
(insert geiser-table-line)
(setq w (1- w)))
(insert geiser-table-line sep geiser-table-line))
(delete-char -2)
(insert geiser-table-line last)
(newline))
(defun geiser-table--insert-first-line (widths)
(geiser-table--insert-line widths
geiser-table-corner-lt
geiser-table-corner-rt
geiser-table-tee-t))
(defun geiser-table--insert-middle-line (widths)
(geiser-table--insert-line widths
geiser-table-tee-l
geiser-table-tee-r
geiser-table-crux))
(defun geiser-table--insert-last-line (widths)
(geiser-table--insert-line widths
geiser-table-corner-lb
geiser-table-corner-rb
geiser-table-tee-b))
(defun geiser-table--insert-row (r)
(let ((ln (length (car r)))
(l 0))
(while (< l ln)
(insert (concat geiser-table-sep " "
(mapconcat 'identity
(mapcar `(lambda (x) (nth ,l x)) r)
(concat " " geiser-table-sep " "))
" " geiser-table-sep "\n"))
(setq l (1+ l)))))
(defun geiser-table--insert (rows)
(let* ((widths (geiser-table--col-widths rows))
(rows (geiser-table--format-rows rows widths)))
(geiser-table--insert-first-line widths)
(dolist (r rows)
(geiser-table--insert-row r)
(geiser-table--insert-middle-line widths))
(kill-line -1)
(geiser-table--insert-last-line widths)))
(provide 'geiser-table)
;;; geiser-table.el ends here
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