annotate lisp/mule/mule-charset.el @ 502:7039e6323819

[xemacs-hg @ 2001-05-04 22:41:46 by ben] ----------------------- byte-comp warning fixes ----------------- New functions for cleanly eliminating byte-compiler warnings. Their definitions require no changes at all in bytecomp.el, meaning that any package that wants to use them and be compatible with older versions of XEmacs need only copy the code and rename the functions (i.e. prefix them with the package name). Eliminate byte-compiler warnings using the new functions in bytecomp-runtime.el. Move coding-system-put,get,category, since they're not Mule-specific and are used in prefer-coding-system. font.el was incredibly ugly. Clean it up. Avoid using defsubst for any exported functions, to avoid possible compatibility problems if we later change the internal interface. (It happened before, with face accessors, between 19.8 and 19.9). Fix tons of warnings. Clean up (new function gpm-is-supported-p eliminates duplicate code in gpm-create/delete-device-hook) and eliminate warnings. ---------- make byte-recompile-directory work in the --------- core `lisp' dir, even in the absence of a Mule XEmacs (i.e. make it skip the Mule files rather than trying to compile them). now you should be able to do `touch *.el' in the `lisp' dir, then M-x byte-recompile-directory, and get no warnings. Avoid trying to compile Mule files in byte-recompile-directory when we're not in a Mule XEmacs, since we're highly likely to get syntax errors. Add a coding-system cookie to all Mule files so that byte-recompile-directory ignores them. Magic cookie function moved to files.el from code-files.el (for use by bytecomp even in a non-coding-system XEmacs), and changed names and semantics for use by bytecomp. NOTE: IMO this is an internal function that we can change as we like (and there is absolutely no code anywhere else using the function). ---------------- GUI improvements: menus, help ------------------- Rearrange order of keymap declarations to be alphabetical. Improve help on help to include all bindings, and group by category. Add bindings for new Info commands. Remove warnings. Use command-hyper-apropos in place of command-apropos. Add a function to do the equivalent of command-apropos. Evals its help-text argument so you can put expressions there. Used now by help-for-help. Add binding to continue text searches. Expand index searches to work over multiple info documents. Add commands to search text/index in User and Lispref. Add new entry, "Uncomment Region" (parallels "Comment Out Region"). Redo Help menu; add bindings for new Info commands to search the index or text of the User and Lispref manuals. Add command for mark-paragraph, activate-region. Make Edit->R accelerator be rectangle, not register (more commonly used), and put rectangle first. Fix the Edit Init File entry to never load the .elc file. Simplify the default-popup-menu. Add Cmds->Tabs menu. Use kp-left not kp_left, etc. ---------------- Miscellaneous bug fixes/cleanup ------------------- byte-compiler-options: Correct doc string. easy-menu-do-define: fix extra quote. fill-paragraph-or-region:Rewrite to be more correct -- use call-interactively so that we always get exactly the same behavior as if the functions were called directly. No need to fiddle with zmacs-region-stays, now that bogus clearing of it (2001-04-28 src/ChangeLog) is removed. Put dialog titles back in -- this time correctly. Fix various other problems with leaks and such. key-sequence-list-description: Clean up fun to always correctly canonicalize. Clean up Kinsoku comments, synch comment-region with FSF 20.7. * simple.el (region-exists-p): * simple.el (region-active-p): Add comment about which one is correct to use in menu specs. * sound.el (load-sound-file): Minor code clean up. * startup.el: * startup.el (command-line-early): * startup.el (initial-scratch-message): Comment changes. Add info about sample.init.el to splash screen. Improve initial-scratch-message and clarify purpose of Scratch buffer. Fix byte-compile warning. ------------------------ Added features ------------------------- Add new variable to control whether etags checks all parent directories for tag files. (On by default.) * hash-table.el: New file, useful utility functions. * dumped-lisp.el (preloaded-file-list): Dump hash-table.el. ------------ notable bug fix: Windows event code -------------- Get critical quit working. ------------ notable bug fix and new feature: regex code -------------- Shy groups were implemented in a horrible, half-assed way that would cause them to screw up regex searching in most cases. Fixed to work correctly. Also extended back-reference syntax past 9. Only is recognized as such if there are at least that many non-shy groups; and optionally will warn about such uses, to catch old code that might be using them differently. (Added variable to control this in search.c -- `warn-about-possibly-incompatible-back- references', on by default for the moment. Declared in lisp.h. ---------------- process/SIGIO improvements ------------------- define USE_GETADDRINFO to replace more complex conditional, and use it. the code conditionalized on this in unix_open_network_stream had *serious* problems handling errors. it's now fixed, and major amounts of duplicate code between the two versions were combined. don't disable SIGIO and other interrupts unless CONNECT_NEEDS_SLOWED_INTERRUPTS is defined -- don't penalize OS's without bugs. similarly for a freebsd bug that was affecting all OS's. * s\ultrix.h: define CONNECT_NEEDS_SLOWED_INTERRUPTS, since that's the OS mentioned as having a kernel bug. * sysdep.c (request_sigio_on_device): * sysdep.c (unrequest_sigio_on_device): fix SIGIO problems on Linux. add check for O_ASYNC in case it's defined and FASYNC isn't. add comment about other ways to do SIGIO on Linux. * callproc.c (Fold_call_process_internal): * process.c (Fstart_process_internal): Deal with the possibility that `default-directory' doesn't have terminating slash. Correct comments about vfork. ---------------- Miscellaneous bug fixes/cleanup ------------------- * callint.c (Finteractive): Add lots of documentation -- exactly what the Lisp equivalents of all the interactive specs are. * console.h (struct console): change type of quit_char to Emchar. * event-msw.c (lstream_type_create_mswindows_selectable): spacing change. Eliminate events-mod.h and combine into events.h. * emacs.c: * emacs.c (make_arg_list_1): * emacs.c (main_1): A couple of char->Extbyte changes, add a comment. * glyphs-msw.c: Correct indentation of function defns to not exceed 80 cols. Try (sort of) to fix some code that sets the colors of the progress gauge. (Commented out) * keymap.c (syms_of_keymap): use DEFSYMBOL. * process.c (read_process_output): No need to fiddle with zmacs_region_stays, now that bogus clearing of it (see below) is removed. * search.c (Freplace_match): warning fix.
author ben
date Fri, 04 May 2001 22:42:35 +0000
parents abe6d1db359e
children 943eaba38521
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rev   line source
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7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
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1 ;;; mule-charset.el --- Charset functions for Mule. -*- coding: iso-2022-7bit; -*-
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2
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3 ;; Copyright (C) 1992 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995 Amdahl Corporation.
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5 ;; Copyright (C) 1996 Sun Microsystems.
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6
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7 ;; Author: Unknown
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8 ;; Keywords: i18n, mule, internal
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the
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24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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25 ;; Boston, MA 02111-1307, USA.
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26
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27 ;;; Synched up with: Not synched. API at source level synched with FSF 20.3.9.
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28
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29 ;;; Commentary:
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30
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31 ;; These functions are not compatible at the bytecode level with Emacs/Mule,
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32 ;; and they never will be. -sb [1999-05-26]
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33
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34 ;;; Code:
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35
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36 ;;;; Classifying text according to charsets
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37
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38 (defun charsets-in-region (start end &optional buffer)
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39 "Return a list of the charsets in the region between START and END.
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40 BUFFER defaults to the current buffer if omitted."
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41 (let (list)
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42 (save-excursion
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43 (if buffer
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44 (set-buffer buffer))
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45 (save-restriction
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46 (narrow-to-region start end)
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47 (goto-char (point-min))
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48 (while (not (eobp))
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49 (let* (prev-charset
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50 (ch (char-after (point)))
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51 (charset (char-charset ch)))
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52 (if (not (eq prev-charset charset))
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53 (progn
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54 (setq prev-charset charset)
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55 (or (memq charset list)
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56 (setq list (cons charset list))))))
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57 (forward-char))))
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58 list))
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59
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60 (defun charsets-in-string (string)
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61 "Return a list of the charsets in STRING."
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62 (let ((i 0)
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63 (len (length string))
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64 prev-charset charset list)
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65 (while (< i len)
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66 (setq charset (char-charset (aref string i)))
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67 (if (not (eq prev-charset charset))
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68 (progn
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69 (setq prev-charset charset)
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70 (or (memq charset list)
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71 (setq list (cons charset list)))))
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72 (setq i (1+ i)))
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73 list))
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74
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75
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76 ;;;; Charset accessors
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77
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78 (defun charset-iso-graphic-plane (charset)
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79 "Return the `graphic' property of CHARSET.
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80 See `make-charset'."
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81 (charset-property charset 'graphic))
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82
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83 (defun charset-iso-final-char (charset)
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84 "Return the final byte of the ISO 2022 escape sequence designating CHARSET."
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85 (charset-property charset 'final))
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86
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87 (defun charset-chars (charset)
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88 "Return the number of characters per dimension of CHARSET."
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89 (charset-property charset 'chars))
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90
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91 (defun charset-width (charset)
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92 "Return the number of display columns per character of CHARSET.
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93 This only applies to TTY mode (under X, the actual display width can
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94 be automatically determined)."
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95 (charset-property charset 'columns))
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96
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97 ;; #### FSFmacs returns 0
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98 (defun charset-direction (charset)
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99 "Return the display direction (0 for `l2r' or 1 for `r2l') of CHARSET.
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100 Only left-to-right is currently implemented."
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101 (if (eq (charset-property charset 'direction) 'l2r)
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102 0
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103 1))
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104
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105 ;; Not in Emacs/Mule
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106 (defun charset-registry (charset)
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107 "Return the registry of CHARSET.
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108 This is a regular expression matching the registry field of fonts
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109 that can display the characters in CHARSET."
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110 (charset-property charset 'registry))
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111
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112 (defun charset-ccl-program (charset)
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113 "Return the CCL program of CHARSET.
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114 See `make-charset'."
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115 (charset-property charset 'ccl-program))
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116
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117 (defun charset-bytes (charset)
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118 "Useless in XEmacs, returns 1."
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119 1)
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120
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121 (define-obsolete-function-alias 'charset-columns 'charset-width) ;; 19990409
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122 (define-obsolete-function-alias 'charset-final 'charset-iso-final-char) ;; 19990409
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123 (define-obsolete-function-alias 'charset-graphic 'charset-iso-graphic-plane) ;; 19990409
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124 (define-obsolete-function-alias 'charset-doc-string 'charset-description) ;; 19990409
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125
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126 ;;;; Define setf methods for all settable Charset properties
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127
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128 (defsetf charset-registry set-charset-registry)
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129 (defsetf charset-ccl-program set-charset-ccl-program)
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130
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131 ;;; FSF compatibility functions
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132 (defun charset-after (&optional pos)
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133 "Return charset of a character in current buffer at position POS.
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134 If POS is nil, it defauls to the current point.
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135 If POS is out of range, the value is nil."
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136 (when (null pos)
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137 (setq pos (point)))
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138 (check-argument-type 'integerp pos)
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139 (unless (or (< pos (point-min))
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140 (> pos (point-max)))
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141 (char-charset (char-after pos))))
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142
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143 ;; Yuck!
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144 ;; We're not going to support this.
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145 ;(defun charset-info (charset)
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146 ; "Return a vector of information of CHARSET.
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147 ;The elements of the vector are:
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148 ; CHARSET-ID, BYTES, DIMENSION, CHARS, WIDTH, DIRECTION,
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149 ; LEADING-CODE-BASE, LEADING-CODE-EXT,
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150 ; ISO-FINAL-CHAR, ISO-GRAPHIC-PLANE,
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151 ; REVERSE-CHARSET, SHORT-NAME, LONG-NAME, DESCRIPTION,
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152 ; PLIST,
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153 ;where
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154 ;CHARSET-ID (integer) is the identification number of the charset.
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155 ;BYTES (integer) is the length of multi-byte form of a character in
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156 ; the charset: one of 1, 2, 3, and 4.
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157 ;DIMENSION (integer) is the number of bytes to represent a character of
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158 ;the charset: 1 or 2.
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159 ;CHARS (integer) is the number of characters in a dimension: 94 or 96.
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160 ;WIDTH (integer) is the number of columns a character in the charset
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161 ; occupies on the screen: one of 0, 1, and 2.
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162 ;DIRECTION (integer) is the rendering direction of characters in the
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163 ; charset when rendering. If 0, render from left to right, else
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164 ; render from right to left.
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165 ;LEADING-CODE-BASE (integer) is the base leading-code for the
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166 ; charset.
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167 ;LEADING-CODE-EXT (integer) is the extended leading-code for the
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168 ; charset. All charsets of less than 0xA0 has the value 0.
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169 ;ISO-FINAL-CHAR (character) is the final character of the
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170 ; corresponding ISO 2022 charset.
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171 ;ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked
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172 ; while encoding to variants of ISO 2022 coding system, one of the
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173 ; following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).
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174 ;REVERSE-CHARSET (integer) is the charset which differs only in
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175 ; LEFT-TO-RIGHT value from the charset. If there's no such a
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176 ; charset, the value is -1.
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177 ;SHORT-NAME (string) is the short name to refer to the charset.
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178 ;LONG-NAME (string) is the long name to refer to the charset
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179 ;DESCRIPTION (string) is the description string of the charset.
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180 ;PLIST (property list) may contain any type of information a user
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181 ; want to put and get by functions `put-charset-property' and
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182 ; `get-charset-property' respectively."
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183 ; (vector
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184 ; (charset-id charset)
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185 ; 1
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186 ; (charset-dimension charset)
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187 ; (charset-chars charset)
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188 ; (charset-width charset)
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189 ; (charset-direction charset)
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190 ; nil ;; (charset-leading-code-base (charset))
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191 ; nil ;; (charset-leading-code-ext (charset))
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192 ; (charset-iso-final-char charset)
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193 ; (charset-iso-graphic-plane charset)
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194 ; -1
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195 ; (charset-short-name charset)
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196 ; (charset-long-name charset)
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197 ; (charset-description charset)
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198 ; (charset-plist charset)))
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199
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200 ;(make-compatible 'charset-info "Don't use this if you can help it.")
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201
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202 (defun define-charset (charset-id charset property-vector)
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203 "Define CHARSET-ID as the identification number of CHARSET with INFO-VECTOR.
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204 If CHARSET-ID is nil, it is decided automatically, which means CHARSET is
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205 treated as a private charset.
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206 INFO-VECTOR is a vector of the format:
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207 [DIMENSION CHARS WIDTH DIRECTION ISO-FINAL-CHAR ISO-GRAPHIC-PLANE
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208 SHORT-NAME LONG-NAME DESCRIPTION]
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209 The meanings of each elements is as follows:
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210 DIMENSION (integer) is the number of bytes to represent a character: 1 or 2.
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211 CHARS (integer) is the number of characters in a dimension: 94 or 96.
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212 WIDTH (integer) is the number of columns a character in the charset
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213 occupies on the screen: one of 0, 1, and 2.
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214
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215 DIRECTION (integer) is the rendering direction of characters in the
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216 charset when rendering. If 0, render from left to right, else
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217 render from right to left.
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218
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219 ISO-FINAL-CHAR (character) is the final character of the
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220 corresponding ISO 2022 charset.
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221
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222 ISO-GRAPHIC-PLANE (integer) is the graphic plane to be invoked
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223 while encoding to variants of ISO 2022 coding system, one of the
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224 following: 0/graphic-plane-left(GL), 1/graphic-plane-right(GR).
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225
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226
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227 SHORT-NAME (string) is the short name to refer to the charset.
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228
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229 LONG-NAME (string) is the long name to refer to the charset.
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230
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231 DESCRIPTION (string) is the description string of the charset."
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232 (make-charset charset (aref property-vector 8)
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233 (list
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234 'short-name (aref property-vector 6)
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235 'long-name (aref property-vector 7)
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236 'dimension (aref property-vector 0)
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237 'columns (aref property-vector 2)
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238 'chars (aref property-vector 1)
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239 'final (aref property-vector 4)
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240 'graphic (aref property-vector 5)
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241 'direction (aref property-vector 3))))
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242
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243 (make-compatible 'define-charset "")
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244
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245 ;;; Charset property
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246
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247 (defalias 'get-charset-property 'get)
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248 (defalias 'put-charset-property 'put)
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249 (defalias 'charset-plist 'object-plist)
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250 (defalias 'set-charset-plist 'setplist)
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251
442
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252 ;; Setup auto-fill-chars for charsets that should invoke auto-filling.
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253 ;; SPACE and NEWLIE are already set.
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254 (let ((l '(katakana-jisx0201
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255 japanese-jisx0208 japanese-jisx0212
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256 chinese-gb2312 chinese-big5-1 chinese-big5-2)))
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257 (while l
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258 (put-char-table (car l) t auto-fill-chars)
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259 (setq l (cdr l))))
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260
428
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261 ;;; mule-charset.el ends here