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   1 ;;; latin-tests-unity.el ---  Test the latin-unity package
   2
   3 ;; Copyright (C) 2002 Free Software Foundation, Inc
   4
   5 ;; Author: Stephen J. Turnbull
   6 ;; Keywords: mule, charsets
   7 ;; Created: 2002 October 20
   8 ;; Last-modified: 2002 October 20
   9
  10 ;; This file is part of XEmacs.
  11
  12 ;; XEmacs is free software; you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation; either version 2, or (at your option)
  15 ;; any later version.
  16
  17 ;; XEmacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with XEmacs; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  25 ;; Boston, MA 02111-1307, USA.
  26
  27
  28 ;;; Commentary:
  29
  30 ;; Mule bogusly considers the various ISO-8859 extended character sets
  31 ;; as disjoint, when ISO 8859 itself clearly considers them to be subsets
  32 ;; of a larger character set.  The latin-unity package provides functions
  33 ;; which determine the list of coding systems which can encode all of the
  34 ;; characters in the buffer.  This library tests the functionality.
  35
  36 ;;  Requires mule-ucs, but easy to generalize.
  37
  38 ;;
  39
  40 ;;; Code:
  41
  42 (defconst latin-unity-was-active
  43   (memq 'latin-unity-sanity-check write-region-pre-hook))
  44
  45 (unless latin-unity-was-active (latin-unity-install))
  46
  47 ;; save variables we intend to trash
  48 (put 'latin-unity-test 'ucs-list latin-unity-ucs-list)
  49 (put 'latin-unity-test 'preapproved
  50      latin-unity-preapproved-coding-system-list)
  51 (put 'latin-unity-test 'preferred
  52      latin-unity-preferred-coding-system-list)
  53 (put 'latin-unity-test 'default buffer-file-coding-system)
  54
  55 (unwind-protect
  56     (progn
  57       (with-temp-buffer
  58         (setq latin-unity-preapproved-coding-system-list '(buffer-default))
  59         ;; #### need to check error conditions and stuff too
  60         ;; Successful remapping
  61         (mapc (lambda (test)
  62                 ;; The way we should do the successful tests is to have
  63                 ;; two coding systems, the buffer's current one, and the
  64                 ;; target.  We set/bind preapproved-coding-system-list to
  65                 ;; the target.
  66                 ;; better yet, target should be the preapproved list
  67                 (let ((current (car test))
  68                       (target (cadr test))
  69                       (string (caddr test)))
  70                   (setq buffer-file-coding-system current)
  71                   (setq latin-unity-preapproved-coding-system-list
  72                         (list target))
  73                   (goto-char (point-max))
  74                   (let ((a (point)))
  75                     (insert string)
  76                     (let ((b (point))
  77                           (coding-system-for-read target))
  78                       (insert "\n")
  79                       (write-region a b "/tmp/test-latin-unity")
  80                       (goto-char (+ (point)
  81                                     (second (insert-file-contents
  82                                              "/tmp/test-latin-unity"))))
  83                       (eval
  84                        `(Assert (string= ,(buffer-substring a b)
  85                                          ,(buffer-substring (1+ b)
  86                                                             (point)))))))))
  87               (list
  88                ;; Erwan David's example
  89                (list 'iso-8859-1 'iso-8859-15
  90                      (format "test accentu%c, avec %curo."
  91                              ;; LATIN SMALL LETTER E WITH ACUTE
  92                              (make-char 'latin-iso8859-1 #xE9)
  93                              ;; EURO SIGN
  94                              (make-char 'latin-iso8859-15 #xA4)))
  95                ;; We had problems with plain Latin-1 :-(
  96                (list 'iso-8859-1 'iso-8859-1
  97                      (format "Ville Skytt%c  <ville.skytta@xemacs.org>"
  98                              ;; LATIN SMALL LETTER A WITH DIAERESIS
  99                              (make-char 'latin-iso8859-1 #xE4)))
 100                (list 'iso-8859-1 'iso-8859-2
 101                      (format "f%cr Hrvoje Nik%ci%c"
 102                              ;; LATIN SMALL LETTER U WITH DIAERESIS
 103                              (make-char 'latin-iso8859-1 #xFC)
 104                              ;; LATIN SMALL LETTER S WITH CARON
 105                              (make-char 'latin-iso8859-2 #xB9)
 106                              ;; LATIN SMALL LETTER C WITH ACUTE
 107                              (make-char 'latin-iso8859-2 #xE6)))
 108                (list 'iso-8859-1 'utf-8
 109                      (format "f%cr Hrvoje, %cclept Nik%ci%c"
 110                              ;; LATIN SMALL LETTER U WITH DIAERESIS
 111                              (make-char 'latin-iso8859-1 #xFC)
 112                              ;; LATIN SMALL LETTER Y WITH DIAERESIS
 113                              (make-char 'latin-iso8859-1 #xFF)
 114                              ;; LATIN SMALL LETTER S WITH CARON
 115                              (make-char 'latin-iso8859-2 #xB9)
 116                              ;; LATIN SMALL LETTER C WITH ACUTE ACCENT
 117                              (make-char 'latin-iso8859-2 #xE6)))
 118                )
 119              ))
 120
 121       ;; do interactive tests
 122       (when (interactive-p)
 123         (message "No interactive tests yet."))
 124
 125       )
 126
 127   ;; unwind forms
 128
 129   ;; restore variables we trashed
 130   (setq latin-unity-ucs-list (get 'latin-unity-test 'ucs-list))
 131   (setq latin-unity-preapproved-coding-system-list
 132         (get 'latin-unity-test 'preapproved))
 133   (setq latin-unity-preferred-coding-system-list
 134         (get 'latin-unity-test 'preferred))
 135   (setq buffer-file-coding-system (get 'latin-unity-test 'default))
 136
 137   ;; conditionally uninstall
 138   (unless latin-unity-was-active (latin-unity-uninstall)))
 139
 140 ;;; end of latin-unity-tests.el