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-;; Functions for dealing with char tables.
-;; Copyright (C) 1987 Free Software Foundation, Inc.
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 1, or (at your option)
-;; any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
-;; Written by Howard Gayle. See case-table.el for details.
-
-(require 'case-table)
-
-(defun rope-to-vector (rope)
- (let* ((len (/ (length rope) 2))
- (vector (make-vector len nil))
- (i 0))
- (while (< i len)
- (aset vector i (rope-elt rope i))
- (setq i (1+ i)))))
-
-(defun describe-display-table (DT)
- "Describe the display-table DT in a help buffer."
- (with-output-to-temp-buffer "*Help*"
- (princ "\nTruncation glyf: ")
- (prin1 (aref dt 256))
- (princ "\nWrap glyf: ")
- (prin1 (aref dt 257))
- (princ "\nEscape glyf: ")
- (prin1 (aref dt 258))
- (princ "\nCtrl glyf: ")
- (prin1 (aref dt 259))
- (princ "\nSelective display rope: ")
- (prin1 (rope-to-vector (aref dt 260)))
- (princ "\nCharacter display ropes:\n")
- (let ((vector (make-vector 256 nil))
- (i 0))
- (while (< i 256)
- (aset vector i
- (if (stringp (aref dt i))
- (rope-to-vector (aref dt i))
- (aref dt i)))
- (setq i (1+ i)))
- (describe-vector vector))
- (print-help-return-message)))
-
-(defun describe-current-display-table ()
- "Describe the display-table in use in the selected window and buffer."
- (interactive)
- (describe-display-table
- (or (window-display-table (selected-window))
- buffer-display-table
- standard-display-table)))
-
-(defun make-display-table ()
- (make-vector 261 nil))
-
-(defun standard-display-8bit (l h)
- "Display characters in the range [L, H] literally."
- (while (<= l h)
- (if (and (>= l ?\ ) (< l 127))
- (if standard-display-table (aset standard-display-table l nil))
- (or standard-display-table
- (setq standard-display-table (make-vector 261 nil)))
- (aset standard-display-table l l))
- (setq l (1+ l))))
-
-(defun standard-display-ascii (c s)
- "Display character C using string S."
- (or standard-display-table
- (setq standard-display-table (make-vector 261 nil)))
- (aset standard-display-table c (apply 'make-rope (append s nil))))
-
-(defun standard-display-g1 (c sc)
- "Display character C as character SC in the g1 character set."
- (or standard-display-table
- (setq standard-display-table (make-vector 261 nil)))
- (aset standard-display-table c
- (make-rope (create-glyf (concat "\016" (char-to-string sc) "\017")))))
-
-(defun standard-display-graphic (c gc)
- "Display character C as character GC in graphics character set."
- (or standard-display-table
- (setq standard-display-table (make-vector 261 nil)))
- (aset standard-display-table c
- (make-rope (create-glyf (concat "\e(0" (char-to-string gc) "\e(B")))))
-
-(defun standard-display-underline (c uc)
- "Display character C as character UC plus underlining."
- (or standard-display-table
- (setq standard-display-table (make-vector 261 nil)))
- (aset standard-display-table c
- (make-rope (create-glyf (concat "\e[4m" (char-to-string uc) "\e[m")))))
-
-(defun create-glyf (string)
- (let ((i 256))
- (while (and (< i 65536) (aref glyf-table i)
- (not (string= (aref glyf-table i) string)))
- (setq i (1+ i)))
- (if (= i 65536)
- (error "No free glyf codes remain"))
- (aset glyf-table i string)))
-
-(provide 'disp-table)