xemacs-beta: lisp/mule/make-coding-system.el annotate

annotate lisp/mule/make-coding-system.el @ 5406:061f4f90f874

Convert lib-src/ to GPLv3.

author	Mike Sperber <sperber@deinprogramm.de>
date	Mon, 18 Oct 2010 14:02:19 +0200
parents	308d34e9f07d
children	ac37a5f7e5be

rev	line source
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	1 ;;; make-coding-system.el; Provides the #'make-coding-system function and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	2 ;;; much of the implementation of the fixed-width coding system type.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	3
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	4 ;; Copyright (C) 2009 Free Software Foundation
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	5
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	6 ;; Author: Aidan Kehoe
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	7
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	8 ;; This file is part of XEmacs.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	9
5402 308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	10 ;; XEmacs is free software: you can redistribute it and/or modify it
308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	11 ;; under the terms of the GNU General Public License as published by the
308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	12 ;; Free Software Foundation, either version 3 of the License, or (at your
308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	13 ;; option) any later version.
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	14
5402 308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	15 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT
308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	16 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	17 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	18 ;; for more details.
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	19
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	20 ;; You should have received a copy of the GNU General Public License
5402 308d34e9f07d Changed bulk of GPLv2 or later files identified by script Mats Lidell <matsl@xemacs.org> parents: 5083 diff changeset	21 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	22
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	23 ;;; Commentary:
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	24
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	25 ;;; Code:
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	26
5083 88f955fa5a7f Back out revision c673987f5f3d, undump mule/make-coding-system.el. Aidan Kehoe <kehoea@parhasard.net> parents: 5081 diff changeset	27 (defvar fixed-width-private-use-start ?\uE000
5081 baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	28 "Start of a 256 code private use area for fixed-width coding systems.
baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	29
baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	30 This is used to ensure that distinct octets on disk for a given coding
baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	31 system map to distinct XEmacs characters, preventing spurious changes when
baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	32 a file is read, not changed, and then written. ")
baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	33
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	34 (defun fixed-width-generate-helper (decode-table encode-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	35 encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	36 "Helper func, `fixed-width-generate-encode-program-and-skip-chars-strings',
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	37 which see.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	38
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	39 Deals with the case where ASCII and another character set can both be
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	40 encoded unambiguously and completely into the coding-system; if this is so,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	41 returns multiple values comprisig of such a ccl-program and the character
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	42 set in question. If not, it returns nil."
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	43 (let ((tentative-encode-program-parts
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	44 (eval-when-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	45 (let* ((vec-len 128)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	46 (compiled
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	47 (append
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	48 (ccl-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	49 `(1
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	50 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	51 (read-multibyte-character r0 r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	52 (if (r0 == ,(charset-id 'ascii))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	53 (write r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	54 ((if (r0 == #xABAB)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	55 ;; #xBFFE is a sentinel in the compiled
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	56 ;; program.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	57 ((r0 = r1 & #x7F)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	58 (write r0 ,(make-vector vec-len #xBFFE)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	59 ((mule-to-unicode r0 r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	60 (if (r0 == #xFFFD)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	61 (write #xBEEF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	62 ((lookup-integer encode-table-sym r0 r3)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	63 (if r7
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	64 (write-multibyte-character r0 r3)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	65 (write #xBEEF))))))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	66 (repeat)))) nil))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	67 (first-part compiled)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	68 (last-part
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	69 (member-if-not (lambda (entr) (eq #xBFFE entr))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	70 (member-if
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	71 (lambda (entr) (eq #xBFFE entr))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	72 first-part))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	73 (while compiled
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	74 (when (eq #xBFFE (cadr compiled))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	75 (assert (= vec-len (search '(#xBFFE) (cdr compiled)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	76 :test #'/=)) nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	77 "Strange ccl vector length")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	78 (setcdr compiled nil))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	79 (setq compiled (cdr compiled)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	80 ;; Is the generated code as we expect it to be?
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	81 (assert (and (memq #xABAB first-part)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	82 (memq #xBEEF14 last-part))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	83 nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	84 "This code assumes that the constant #xBEEF is #xBEEF14 in \
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	85 compiled CCL code,\nand that the constant #xABAB is #xABAB. If that is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	86 not the case, and it appears not to be--that's why you're getting this
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	87 message--it will not work. ")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	88 (list first-part last-part vec-len))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	89 (charset-lower -1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	90 (charset-upper -1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	91 worth-trying known-charsets encode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	92 other-charset-vector ucs)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	93
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	94 (loop for char across decode-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	95 do (pushnew (char-charset char) known-charsets))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	96 (setq known-charsets (delq 'ascii known-charsets))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	97
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	98 (loop for known-charset in known-charsets
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	99 do
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	100 ;; This is not possible for two dimensional charsets.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	101 (when (eq 1 (charset-dimension known-charset))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	102 (if (eq 'control-1 known-charset)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	103 (setq charset-lower 0
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	104 charset-upper 31)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	105 ;; There should be a nicer way to get the limits here.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	106 (condition-case args-out-of-range
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	107 (make-char known-charset #x100)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	108 (args-out-of-range
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	109 (setq charset-lower (third args-out-of-range)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	110 charset-upper (fourth args-out-of-range)))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	111 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	112 for i from charset-lower to charset-upper
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	113 always (and (setq ucs
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	114 (encode-char (make-char known-charset i) 'ucs))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	115 (gethash ucs encode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	116 finally (setq worth-trying known-charset))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	117
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	118 ;; Only trying this for one charset at a time, the first find.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	119 (when worth-trying (return))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	120
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	121 ;; Okay, this charset is not worth trying, Try the next.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	122 (setq charset-lower -1
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	123 charset-upper -1
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	124 worth-trying nil)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	125
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	126 (when worth-trying
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	127 (setq other-charset-vector
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	128 (make-vector (third tentative-encode-program-parts)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	129 encode-failure-octet))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	130 (loop for i from charset-lower to charset-upper
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	131 do (aset other-charset-vector i
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	132 (gethash (encode-char (make-char worth-trying i)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	133 'ucs) encode-table)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	134 (setq encode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	135 (nsublis
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	136 (list (cons #xABAB (charset-id worth-trying)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	137 (nconc
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	138 (copy-list (first
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	139 tentative-encode-program-parts))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	140 (append other-charset-vector nil)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	141 (copy-tree (second
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	142 tentative-encode-program-parts))))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	143 (and encode-program (values encode-program worth-trying))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	144
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	145 (defun fixed-width-generate-encode-program-and-skip-chars-strings
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	146 (decode-table encode-table encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	147 "Generate a CCL program to encode a 8-bit fixed-width charset.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	148
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	149 DECODE-TABLE must have 256 non-cons entries, and will be regarded as
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	150 describing a map from the octet corresponding to an offset in the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	151 table to the that entry in the table. ENCODE-TABLE is a hash table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	152 map from unicode values to characters in the range [0,255].
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	153 ENCODE-FAILURE-OCTET describes an integer between 0 and 255
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	154 \(inclusive) to write in the event that a character cannot be encoded."
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	155 (check-argument-type #'vectorp decode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	156 (check-argument-range (length decode-table) #x100 #x100)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	157 (check-argument-type #'hash-table-p encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	158 (check-argument-type #'integerp encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	159 (check-argument-range encode-failure-octet #x00 #xFF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	160 (let ((encode-program nil)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	161 (general-encode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	162 (eval-when-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	163 (let ((prog (append
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	164 (ccl-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	165 `(1
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	166 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	167 (read-multibyte-character r0 r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	168 (mule-to-unicode r0 r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	169 (if (r0 == #xFFFD)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	170 (write #xBEEF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	171 ((lookup-integer encode-table-sym r0 r3)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	172 (if r7
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	173 (write-multibyte-character r0 r3)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	174 (write #xBEEF))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	175 (repeat)))) nil)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	176 (assert (memq #xBEEF14 prog)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	177 nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	178 "This code assumes that the constant #xBEEF is #xBEEF14 \
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	179 in compiled CCL code.\nIf that is not the case, and it appears not to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	180 be--that's why you're getting this message--it will not work. ")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	181 prog)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	182 (encode-program-with-ascii-optimisation
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	183 (eval-when-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	184 (let ((prog (append
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	185 (ccl-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	186 `(1
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	187 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	188 (read-multibyte-character r0 r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	189 (if (r0 == ,(charset-id 'ascii))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	190 (write r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	191 ((mule-to-unicode r0 r1)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	192 (if (r0 == #xFFFD)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	193 (write #xBEEF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	194 ((lookup-integer encode-table-sym r0 r3)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	195 (if r7
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	196 (write-multibyte-character r0 r3)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	197 (write #xBEEF))))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	198 (repeat)))) nil)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	199 (assert (memq #xBEEF14 prog)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	200 nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	201 "This code assumes that the constant #xBEEF is #xBEEF14 \
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	202 in compiled CCL code.\nIf that is not the case, and it appears not to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	203 be--that's why you're getting this message--it will not work. ")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	204 prog)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	205 (ascii-encodes-as-itself nil)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	206 (control-1-encodes-as-itself t)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	207 (invalid-sequence-code-point-start
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	208 (eval-when-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	209 (char-to-unicode
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	210 (aref (decode-coding-string "\xd8\x00\x00\x00" 'utf-16-be) 3))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	211 further-char-set skip-chars invalid-sequences-skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	212
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	213 ;; Is this coding system ASCII-compatible? If so, we can avoid the hash
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	214 ;; table lookup for those characters.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	215 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	216 for i from #x00 to #x7f
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	217 always (eq (int-to-char i) (gethash i encode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	218 finally (setq ascii-encodes-as-itself t))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	219
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	220 ;; Note that this logic handles EBCDIC badly. For example, CP037,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	221 ;; MIME name ebcdic-na, has the entire repertoire of ASCII and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	222 ;; Latin 1, and thus a more optimal ccl encode program would check
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	223 ;; for those character sets and use tables. But for now, we do a
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	224 ;; hash table lookup for every character.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	225 (if (null ascii-encodes-as-itself)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	226 ;; General encode program. Pros; general and correct. Cons;
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	227 ;; slow, a hash table lookup + mule-unicode conversion is done
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	228 ;; for every character encoding.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	229 (setq encode-program general-encode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	230 (multiple-value-setq
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	231 (encode-program further-char-set)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	232 ;; Encode program with ascii-ascii mapping (based on a
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	233 ;; character's mule character set), and one other mule
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	234 ;; character set using table-based encoding, other
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	235 ;; character sets using hash table lookups.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	236 ;; fixed-width-non-ascii-completely-coveredp only returns
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	237 ;; such a mapping if some non-ASCII charset with
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	238 ;; characters in decode-table is entirely covered by
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	239 ;; encode-table.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	240 (fixed-width-generate-helper decode-table encode-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	241 encode-failure-octet))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	242 (unless encode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	243 ;; If fixed-width-non-ascii-completely-coveredp returned nil,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	244 ;; but ASCII still encodes as itself, do one-to-one mapping
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	245 ;; for ASCII, and a hash table lookup for everything else.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	246 (setq encode-program encode-program-with-ascii-optimisation)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	247
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	248 (setq encode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	249 (nsublis
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	250 (list (cons #xBEEF14
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	251 (logior (lsh encode-failure-octet 8)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	252 #x14)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	253 (copy-tree encode-program)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	254 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	255 for i from #x80 to #x9f
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	256 do (unless (= i (aref decode-table i))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	257 (setq control-1-encodes-as-itself nil)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	258 (return)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	259 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	260 for i from #x00 to #xFF
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	261 initially (setq skip-chars
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	262 (cond
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	263 ((and ascii-encodes-as-itself
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	264 control-1-encodes-as-itself further-char-set)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	265 (concat "\x00-\x9f" (charset-skip-chars-string
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	266 further-char-set)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	267 ((and ascii-encodes-as-itself
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	268 control-1-encodes-as-itself)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	269 "\x00-\x9f")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	270 ((null ascii-encodes-as-itself)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	271 (skip-chars-quote (apply #'string
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	272 (append decode-table nil))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	273 (further-char-set
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	274 (concat (charset-skip-chars-string 'ascii)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	275 (charset-skip-chars-string further-char-set)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	276 (t
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	277 (charset-skip-chars-string 'ascii)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	278 invalid-sequences-skip-chars "")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	279 with decoded-ucs = nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	280 with decoded = nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	281 with no-ascii-transparency-skip-chars-list =
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	282 (unless ascii-encodes-as-itself (append decode-table nil))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	283 ;; Can't use #'match-string here, see:
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	284 ;; http://mid.gmane.org/18829.34118.709782.704574@parhasard.net
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	285 with skip-chars-test =
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	286 #'(lambda (skip-chars-string testing)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	287 (with-temp-buffer
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	288 (insert testing)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	289 (goto-char (point-min))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	290 (skip-chars-forward skip-chars-string)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	291 (= (point) (point-max))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	292 do
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	293 (setq decoded (aref decode-table i)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	294 decoded-ucs (char-to-unicode decoded))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	295 (cond
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	296 ((<= invalid-sequence-code-point-start decoded-ucs
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	297 (+ invalid-sequence-code-point-start #xFF))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	298 (setq invalid-sequences-skip-chars
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	299 (concat (string decoded)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	300 invalid-sequences-skip-chars))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	301 (assert (not (funcall skip-chars-test skip-chars decoded))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	302 "This char should only be skipped with \
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	303 `invalid-sequences-skip-chars', not by `skip-chars'"))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	304 ((not (funcall skip-chars-test skip-chars decoded))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	305 (if ascii-encodes-as-itself
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	306 (setq skip-chars (concat skip-chars (string decoded)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	307 (push decoded no-ascii-transparency-skip-chars-list))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	308 finally (unless ascii-encodes-as-itself
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	309 (setq skip-chars
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	310 (skip-chars-quote
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	311 (apply #'string
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	312 no-ascii-transparency-skip-chars-list)))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	313 (values encode-program skip-chars invalid-sequences-skip-chars)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	314
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	315 (defun fixed-width-create-decode-encode-tables (unicode-map)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	316 "Return multiple values \(DECODE-TABLE ENCODE-TABLE) given UNICODE-MAP.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	317 UNICODE-MAP should be an alist mapping from integer octet values to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	318 characters with UCS code points; DECODE-TABLE will be a 256-element
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	319 vector, and ENCODE-TABLE will be a hash table mapping from 256 numbers
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	320 to 256 distinct characters."
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	321 (check-argument-type #'listp unicode-map)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	322 (let ((decode-table (make-vector 256 nil))
4777 c69aeb86b2a3 Serialise non-default hash table rehash thresholds correctly; use this. Aidan Kehoe <kehoea@parhasard.net> parents: 4692 diff changeset	323 (encode-table (make-hash-table :size 256 :rehash-threshold 0.999))
5081 baffa6ca776a Backed out changeset c673987f5f3d Aidan Kehoe <kehoea@parhasard.net> parents: 5068 diff changeset	324 (private-use-start (encode-char fixed-width-private-use-start 'ucs))
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	325 (invalid-sequence-code-point-start
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	326 (eval-when-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	327 (char-to-unicode
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	328 (aref (decode-coding-string "\xd8\x00\x00\x00" 'utf-16-be) 3))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	329 desired-ucs decode-table-entry)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	330
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	331 (loop for (external internal)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	332 in unicode-map
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	333 do
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	334 (aset decode-table external internal)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	335 (assert (not (eq (encode-char internal 'ucs) -1))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	336 nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	337 "Looks like you're creating a fixed-width coding system \
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	338 in a dumped file, \nand you're either not providing a literal unicode map
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	339 or PROPS. Don't do that; fixed-width coding systems rely on sensible
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	340 Unicode mappings being available, which they are at compile time for
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	341 dumped files (but this requires the mentioned literals), but not, for
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	342 most of them, at run time. ")
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	343
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	344 (puthash (encode-char internal 'ucs)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	345 ;; This is semantically an integer, but Dave Love's design
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	346 ;; for lookup-integer in CCL means we need to store it as a
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	347 ;; character.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	348 (int-to-char external)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	349 encode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	350
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	351 ;; Now, go through the decode table. For octet values above #x7f, if the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	352 ;; decode table entry is nil, this means that they have an undefined
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	353 ;; mapping (= they map to XEmacs characters with keys in
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	354 ;; unicode-error-default-translation-table); for octet values below or
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	355 ;; equal to #x7f, it means that they map to ASCII.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	356
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	357 ;; If any entry (whether below or above #x7f) in the decode-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	358 ;; already maps to some character with a key in
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	359 ;; unicode-error-default-translation-table, it is treated as an
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	360 ;; undefined octet by `query-coding-region'. That is, it is not
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	361 ;; necessary for an octet value to be above #x7f for this to happen.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	362
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	363 (dotimes (i 256)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	364 (setq decode-table-entry (aref decode-table i))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	365 (if decode-table-entry
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	366 (when (get-char-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	367 decode-table-entry
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	368 unicode-error-default-translation-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	369 ;; The caller is explicitly specifying that this octet
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	370 ;; corresponds to an invalid sequence on disk:
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	371 (assert (= (get-char-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	372 decode-table-entry
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	373 unicode-error-default-translation-table) i)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	374 "Bad argument for a fixed-width coding system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	375 If you're going to designate an octet with value below #x80 as invalid
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	376 for this coding system, make sure to map it to the invalid sequence
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	377 character corresponding to its octet value on disk. "))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	378
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	379 ;; decode-table-entry is nil; either the octet is to be treated as
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	380 ;; contributing to an error sequence (when (> #x7f i)), or it should
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	381 ;; be attempted to treat it as ASCII-equivalent.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	382 (setq desired-ucs (or (and (< i #x80) i)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	383 (+ invalid-sequence-code-point-start i)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	384 (while (gethash desired-ucs encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	385 (assert (not (< i #x80))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	386 "UCS code point should not already be in encode-table!"
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	387 ;; There is one invalid sequence char per octet value;
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	388 ;; with fixed-width coding systems, it makes no sense
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	389 ;; for us to be multiply allocating them.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	390 (gethash desired-ucs encode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	391 (setq desired-ucs (+ private-use-start desired-ucs)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	392 private-use-start (+ private-use-start 1)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	393 (puthash desired-ucs (int-to-char i) encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	394 (setq desired-ucs (if (> desired-ucs #xFF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	395 (unicode-to-char desired-ucs)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	396 ;; So we get Latin-1 when run at dump time,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	397 ;; instead of JIT-allocated characters.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	398 (int-to-char desired-ucs)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	399 (aset decode-table i desired-ucs)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	400 (values decode-table encode-table)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	401
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	402 (defun fixed-width-generate-decode-program (decode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	403 "Given DECODE-TABLE, generate a CCL program to decode an 8-bit charset.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	404 DECODE-TABLE must have 256 non-cons entries, and will be regarded as
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	405 describing a map from the octet corresponding to an offset in the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	406 table to the that entry in the table. "
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	407 (check-argument-type #'vectorp decode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	408 (check-argument-range (length decode-table) #x100 #x100)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	409 (let ((decode-program-parts
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	410 (eval-when-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	411 (let* ((compiled
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	412 (append
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	413 (ccl-compile
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	414 `(3
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	415 ((read r0)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	416 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	417 (write-read-repeat r0 ,(make-vector
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	418 256 'sentinel)))))) nil))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	419 (first-part compiled)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	420 (last-part
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	421 (member-if-not #'symbolp
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	422 (member-if-not #'integerp first-part))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	423 ;; Chop off the sentinel sentinel sentinel [..] part.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	424 (while compiled
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	425 (if (symbolp (cadr compiled))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	426 (setcdr compiled nil))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	427 (setq compiled (cdr compiled)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	428 (list first-part last-part)))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	429 (nconc
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	430 ;; copy-list needed, because the structure of the literal provided
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	431 ;; by our eval-when-compile hangs around.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	432 (copy-list (first decode-program-parts))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	433 (append decode-table nil)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	434 (second decode-program-parts))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	435
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	436 (defun fixed-width-choose-category (decode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	437 "Given DECODE-TABLE, return an appropriate coding category.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	438 DECODE-TABLE is a 256-entry vector describing the mapping from octets on
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	439 disk to XEmacs characters for some fixed-width 8-bit coding system."
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	440 (check-argument-type #'vectorp decode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	441 (check-argument-range (length decode-table) #x100 #x100)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	442 (loop
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	443 named category
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	444 for i from #x80 to #x9F
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	445 do (unless (= i (aref decode-table i))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	446 (return-from category 'no-conversion))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	447 finally return 'iso-8-1))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	448
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	449 (defun fixed-width-rework-props-runtime (name props)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	450 "Rework PROPS to a form understood by `make-coding-system-internal'.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	451
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	452 NAME must be a symbol, describing a fixed-width coding system that is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	453 about to be created. Much of the implementation of the fixed-width
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	454 coding system is in Lisp, and this function allows us to rework the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	455 arguments that `make-coding-system-internal' sees accordingly.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	456
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	457 If you are calling this function from anywhere but
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	458 `make-coding-system', you're probably doing something wrong."
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	459 (check-argument-type #'symbolp name)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	460 (check-valid-plist props)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	461 (let ((encode-failure-octet (or (plist-get props 'encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	462 (char-to-int ?~)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	463 (unicode-map (plist-get props 'unicode-map))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	464 (hash-table-sym (gensym (format "%s-encode-table" name)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	465 encode-program decode-program decode-table encode-table skip-chars
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	466 invalid-sequences-skip-chars category)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	467
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	468 (check-argument-range encode-failure-octet 0 #xFF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	469 ;; unicode-map must be a true list, and must be non-nil.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	470 (check-argument-type #'true-list-p unicode-map)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	471 (check-argument-type #'consp unicode-map)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	472
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	473 ;; Don't pass on our extra data to make-coding-system-internal.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	474 (setq props (plist-remprop props 'encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	475 props (plist-remprop props 'unicode-map))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	476
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	477 (multiple-value-setq
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	478 (decode-table encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	479 (fixed-width-create-decode-encode-tables unicode-map))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	480
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	481 ;; Register the decode-table.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	482 (define-translation-hash-table hash-table-sym encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	483
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	484 ;; Generate the programs and skip-chars strings.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	485 (setq decode-program (fixed-width-generate-decode-program decode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	486 (multiple-value-setq
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	487 (encode-program skip-chars invalid-sequences-skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	488 (fixed-width-generate-encode-program-and-skip-chars-strings
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	489 decode-table encode-table encode-failure-octet))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	490
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	491 (setq category (fixed-width-choose-category decode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	492
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	493 (unless (vectorp encode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	494 (setq encode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	495 (apply #'vector
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	496 (nsublis (list (cons 'encode-table-sym hash-table-sym))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	497 (copy-tree encode-program)))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	498 (unless (vectorp decode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	499 (setq decode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	500 (apply #'vector decode-program)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	501
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	502 (loop for (symbol . value)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	503 in `((decode . ,decode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	504 (encode . ,encode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	505 (from-unicode . ,encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	506 (query-skip-chars . ,skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	507 (invalid-sequences-skip-chars . ,invalid-sequences-skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	508 (category . ,category))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	509 with default = (gensym)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	510 do
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	511 (unless (eq default (plist-get props symbol default))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	512 (error
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	513 'invalid-argument
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	514 "Explicit property not allowed for fixed-width coding systems"
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	515 symbol))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	516 (setq props (nconc (list symbol value) props)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	517 props))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	518
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	519 ;;;###autoload
4692 dc3c2f298857 Support last two arguments to #'make-coding-system being optional, again. Aidan Kehoe <kehoea@parhasard.net> parents: 4690 diff changeset	520 (defun make-coding-system (name type &optional description props)
4690 257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	521 "Register symbol NAME as a coding system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	522
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	523 TYPE describes the conversion method used and should be one of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	524
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	525 nil or `undecided'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	526 Automatic conversion. XEmacs attempts to detect the coding system
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	527 used in the file.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	528 `chain'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	529 Chain two or more coding systems together to make a combination coding
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	530 system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	531 `no-conversion'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	532 No conversion. Use this for binary files and such. On output,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	533 graphic characters that are not in ASCII or Latin-1 will be
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	534 replaced by a ?. (For a no-conversion-encoded buffer, these
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	535 characters will only be present if you explicitly insert them.)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	536 `convert-eol'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	537 Convert CRLF sequences or CR to LF.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	538 `shift-jis'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	539 Shift-JIS (a Japanese encoding commonly used in PC operating systems).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	540 `unicode'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	541 Any Unicode encoding (UCS-4, UTF-8, UTF-16, etc.).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	542 `mswindows-unicode-to-multibyte'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	543 (MS Windows only) Converts from Windows Unicode to Windows Multibyte
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	544 (any code page encoding) upon encoding, and the other way upon decoding.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	545 `mswindows-multibyte'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	546 Converts to or from Windows Multibyte (any code page encoding).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	547 This is resolved into a chain of `mswindows-unicode' and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	548 `mswindows-unicode-to-multibyte'.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	549 `iso2022'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	550 Any ISO2022-compliant encoding. Among other things, this includes
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	551 JIS (the Japanese encoding commonly used for e-mail), EUC (the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	552 standard Unix encoding for Japanese and other languages), and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	553 Compound Text (the encoding used in X11). You can specify more
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	554 specific information about the conversion with the PROPS argument.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	555 `fixed-width'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	556 A fixed-width eight bit encoding that is not necessarily compliant with
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	557 ISO 2022. This coding system assumes Unicode equivalency, that is, if
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	558 two given XEmacs characters have the same Unicode mapping, they will
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	559 always map to the same octet on disk.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	560 `big5'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	561 Big5 (the encoding commonly used for Mandarin Chinese in Taiwan).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	562 `ccl'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	563 The conversion is performed using a user-written pseudo-code
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	564 program. CCL (Code Conversion Language) is the name of this
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	565 pseudo-code.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	566 `gzip'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	567 GZIP compression format.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	568 `internal'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	569 Write out or read in the raw contents of the memory representing
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	570 the buffer's text. This is primarily useful for debugging
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	571 purposes, and is only enabled when XEmacs has been compiled with
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	572 DEBUG_XEMACS defined (via the --debug configure option).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	573 WARNING: Reading in a file using `internal' conversion can result
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	574 in an internal inconsistency in the memory representing a
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	575 buffer's text, which will produce unpredictable results and may
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	576 cause XEmacs to crash. Under normal circumstances you should
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	577 never use `internal' conversion.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	578
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	579 DESCRIPTION is a short English phrase describing the coding system,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	580 suitable for use as a menu item. (See also the `documentation' property
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	581 below.)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	582
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	583 PROPS is a property list, describing the specific nature of the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	584 character set. Recognized properties are:
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	585
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	586 `mnemonic'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	587 String to be displayed in the modeline when this coding system is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	588 active.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	589
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	590 `documentation'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	591 Detailed documentation on the coding system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	592
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	593 `aliases'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	594 A list of aliases for the coding system. See
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	595 `define-coding-system-alias'.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	596
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	597 `eol-type'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	598 End-of-line conversion to be used. It should be one of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	599
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	600 nil
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	601 Automatically detect the end-of-line type (LF, CRLF,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	602 or CR). Also generate subsidiary coding systems named
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	603 `NAME-unix', `NAME-dos', and `NAME-mac', that are
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	604 identical to this coding system but have an EOL-TYPE
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	605 value of `lf', `crlf', and `cr', respectively.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	606 `lf'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	607 The end of a line is marked externally using ASCII LF.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	608 Since this is also the way that XEmacs represents an
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	609 end-of-line internally, specifying this option results
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	610 in no end-of-line conversion. This is the standard
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	611 format for Unix text files.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	612 `crlf'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	613 The end of a line is marked externally using ASCII
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	614 CRLF. This is the standard format for MS-DOS text
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	615 files.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	616 `cr'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	617 The end of a line is marked externally using ASCII CR.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	618 This is the standard format for Macintosh text files.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	619 t
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	620 Automatically detect the end-of-line type but do not
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	621 generate subsidiary coding systems. (This value is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	622 converted to nil when stored internally, and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	623 `coding-system-property' will return nil.)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	624
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	625 `post-read-conversion'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	626 The value is a function to call after some text is inserted and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	627 decoded by the coding system itself and before any functions in
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	628 `after-change-functions' are called. (#### Not actually true in
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	629 XEmacs. `after-change-functions' will be called twice if
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	630 `post-read-conversion' changes something.) The argument of this
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	631 function is the same as for a function in
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	632 `after-insert-file-functions', i.e. LENGTH of the text inserted,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	633 with point at the head of the text to be decoded.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	634
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	635 `pre-write-conversion'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	636 The value is a function to call after all functions in
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	637 `write-region-annotate-functions' and `buffer-file-format' are
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	638 called, and before the text is encoded by the coding system itself.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	639 The arguments to this function are the same as those of a function
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	640 in `write-region-annotate-functions', i.e. FROM and TO, specifying
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	641 a region of text.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	642
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	643 The following properties are used by `default-query-coding-region',
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	644 the default implementation of `query-coding-region'. This
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	645 implementation and these properties are not used by the Unicode coding
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	646 systems, nor by fixed-width coding systems.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	647
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	648 `safe-chars'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	649 The value is a char table. If a character has non-nil value in it,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	650 the character is safely supported by the coding system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	651 This overrides the `safe-charsets' property.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	652
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	653 `safe-charsets'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	654 The value is a list of charsets safely supported by the coding
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	655 system. For coding systems based on ISO 2022, XEmacs may try to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	656 encode characters outside these character sets, but outside of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	657 East Asia and East Asian coding systems, it is unlikely that
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	658 consumers of the data will understand XEmacs' encoding.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	659 The value t means that all XEmacs character sets handles are supported.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	660
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	661 The following properties are allowed for FSF compatibility but currently
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	662 ignored:
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	663
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	664 `translation-table-for-decode'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	665 The value is a translation table to be applied on decoding. See
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	666 the function `make-translation-table' for the format of translation
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	667 table. This is not applicable to CCL-based coding systems.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	668
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	669 `translation-table-for-encode'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	670 The value is a translation table to be applied on encoding. This is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	671 not applicable to CCL-based coding systems.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	672
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	673 `mime-charset'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	674 The value is a symbol of which name is `MIME-charset' parameter of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	675 the coding system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	676
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	677 `valid-codes' (meaningful only for a coding system based on CCL)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	678 The value is a list to indicate valid byte ranges of the encoded
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	679 file. Each element of the list is an integer or a cons of integer.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	680 In the former case, the integer value is a valid byte code. In the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	681 latter case, the integers specifies the range of valid byte codes.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	682
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	683 The following additional property is recognized if TYPE is `convert-eol':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	684
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	685 `subtype'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	686 One of `lf', `crlf', `cr' or nil (for autodetection). When decoding,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	687 the corresponding sequence will be converted to LF. When encoding,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	688 the opposite happens. This coding system converts characters to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	689 characters.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	690
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	691
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	692
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	693 The following additional properties are recognized if TYPE is `iso2022':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	694
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	695 `charset-g0'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	696 `charset-g1'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	697 `charset-g2'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	698 `charset-g3'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	699 The character set initially designated to the G0 - G3 registers.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	700 The value should be one of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	701
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	702 -- A charset object (designate that character set)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	703 -- nil (do not ever use this register)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	704 -- t (no character set is initially designated to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	705 the register, but may be later on; this automatically
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	706 sets the corresponding `force-g*-on-output' property)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	707
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	708 `force-g0-on-output'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	709 `force-g1-on-output'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	710 `force-g2-on-output'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	711 `force-g2-on-output'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	712 If non-nil, send an explicit designation sequence on output before
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	713 using the specified register.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	714
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	715 `short'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	716 If non-nil, use the short forms \"ESC $ @\", \"ESC $ A\", and
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	717 \"ESC $ B\" on output in place of the full designation sequences
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	718 \"ESC $ ( @\", \"ESC $ ( A\", and \"ESC $ ( B\".
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	719
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	720 `no-ascii-eol'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	721 If non-nil, don't designate ASCII to G0 at each end of line on output.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	722 Setting this to non-nil also suppresses other state-resetting that
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	723 normally happens at the end of a line.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	724
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	725 `no-ascii-cntl'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	726 If non-nil, don't designate ASCII to G0 before control chars on output.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	727
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	728 `seven'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	729 If non-nil, use 7-bit environment on output. Otherwise, use 8-bit
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	730 environment.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	731
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	732 `lock-shift'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	733 If non-nil, use locking-shift (SO/SI) instead of single-shift
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	734 or designation by escape sequence.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	735
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	736 `no-iso6429'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	737 If non-nil, don't use ISO6429's direction specification.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	738
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	739 `escape-quoted'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	740 If non-nil, literal control characters that are the same as
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	741 the beginning of a recognized ISO2022 or ISO6429 escape sequence
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	742 (in particular, ESC (0x1B), SO (0x0E), SI (0x0F), SS2 (0x8E),
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	743 SS3 (0x8F), and CSI (0x9B)) are \"quoted\" with an escape character
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	744 so that they can be properly distinguished from an escape sequence.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	745 (Note that doing this results in a non-portable encoding.) This
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	746 encoding flag is used for byte-compiled files. Note that ESC
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	747 is a good choice for a quoting character because there are no
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	748 escape sequences whose second byte is a character from the Control-0
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	749 or Control-1 character sets; this is explicitly disallowed by the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	750 ISO2022 standard.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	751
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	752 `input-charset-conversion'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	753 A list of conversion specifications, specifying conversion of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	754 characters in one charset to another when decoding is performed.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	755 Each specification is a list of two elements: the source charset,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	756 and the destination charset.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	757
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	758 `output-charset-conversion'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	759 A list of conversion specifications, specifying conversion of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	760 characters in one charset to another when encoding is performed.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	761 The form of each specification is the same as for
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	762 `input-charset-conversion'.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	763
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	764 The following additional properties are recognized if TYPE is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	765 `fixed-width':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	766
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	767 `unicode-map'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	768 Required. A plist describing a map from octets in the coding system
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	769 NAME (as integers) to XEmacs characters. Those XEmacs characters will
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	770 be used explicitly on decoding, but for encoding (most relevantly, on
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	771 writing to disk) XEmacs characters that map to the same Unicode code
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	772 point will be unified. This means that the ISO-8859-? characters that
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	773 map to the same Unicode code point will not be distinct when written to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	774 disk, which is normally what is intended; it also means that East Asian
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	775 Han characters from different XEmacs character sets will not be
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	776 distinct when written to disk, which is less often what is intended.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	777
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	778 Any octets not mapped, and with values above #x7f, will be decoded into
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	779 XEmacs characters that reflect that their values are undefined. These
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	780 characters will be displayed in a language-environment-specific
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	781 way. See `unicode-error-default-translation-table' and the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	782 `invalid-sequence-coding-system' argument to `set-language-info'.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	783
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	784 These characters will normally be treated as invalid when checking
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	785 whether text can be encoded with `query-coding-region'--see the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	786 IGNORE-INVALID-SEQUENCESP argument to that function to avoid this. It
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	787 is possible to specify that octets with values less than #x80 (or
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	788 indeed greater than it) be treated in this way, by specifying
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	789 explicitly that they correspond to the character mapping to that octet
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	790 in `unicode-error-default-translation-table'. Far fewer coding systems
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	791 override the ASCII mapping, though, so this is not the default.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	792
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	793 `encode-failure-octet'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	794 An integer between 0 and 255 to write in place of XEmacs characters
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	795 that cannot be encoded, defaulting to the code for tilde `~'.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	796
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	797 The following additional properties are recognized (and required)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	798 if TYPE is `ccl':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	799
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	800 `decode'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	801 CCL program used for decoding (converting to internal format).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	802
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	803 `encode'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	804 CCL program used for encoding (converting to external format).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	805
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	806
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	807 The following additional properties are recognized if TYPE is `chain':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	808
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	809 `chain'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	810 List of coding systems to be chained together, in decoding order.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	811
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	812 `canonicalize-after-coding'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	813 Coding system to be returned by the detector routines in place of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	814 this coding system.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	815
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	816
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	817
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	818 The following additional properties are recognized if TYPE is `unicode':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	819
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	820 `unicode-type'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	821 One of `utf-16', `utf-8', `ucs-4', or `utf-7' (the latter is not
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	822 yet implemented). `utf-16' is the basic two-byte encoding;
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	823 `ucs-4' is the four-byte encoding; `utf-8' is an ASCII-compatible
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	824 variable-width 8-bit encoding; `utf-7' is a 7-bit encoding using
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	825 only characters that will safely pass through all mail gateways.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	826 [[ This should be \"transformation format\". There should also be
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	827 `ucs-2' (or `bmp' -- no surrogates) and `utf-32' (range checked). ]]
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	828
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	829 `little-endian'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	830 If non-nil, `utf-16' and `ucs-4' will write out the groups of two
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	831 or four bytes little-endian instead of big-endian. This is required,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	832 for example, under Windows.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	833
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	834 `need-bom'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	835 If non-nil, a byte order mark (BOM, or Unicode FFFE) should be
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	836 written out at the beginning of the data. This serves both to
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	837 identify the endianness of the following data and to mark the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	838 data as Unicode (at least, this is how Windows uses it).
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	839 [[ The correct term is \"signature\", since this technique may also
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	840 be used with UTF-8. That is the term used in the standard. ]]
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	841
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	842
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	843 The following additional properties are recognized if TYPE is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	844 `mswindows-multibyte':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	845
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	846 `code-page'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	847 Either a number (specifying a particular code page) or one of the
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	848 symbols `ansi', `oem', `mac', or `ebcdic', specifying the ANSI,
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	849 OEM, Macintosh, or EBCDIC code page associated with a particular
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	850 locale (given by the `locale' property). NOTE: EBCDIC code pages
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	851 only exist in Windows 2000 and later.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	852
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	853 `locale'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	854 If `code-page' is a symbol, this specifies the locale whose code
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	855 page of the corresponding type should be used. This should be
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	856 one of the following: A cons of two strings, (LANGUAGE
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	857 . SUBLANGUAGE) (see `mswindows-set-current-locale'); a string (a
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	858 language; SUBLANG_DEFAULT, i.e. the default sublanguage, is
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	859 used); or one of the symbols `current', `user-default', or
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	860 `system-default', corresponding to the values of
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	861 `mswindows-current-locale', `mswindows-user-default-locale', or
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	862 `mswindows-system-default-locale', respectively.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	863
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	864
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	865 The following additional properties are recognized if TYPE is `undecided':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	866 \[[ Doesn't GNU use \"detect-*\" for the following two? ]]
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	867
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	868 `do-eol'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	869 Do EOL detection.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	870
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	871 `do-coding'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	872 Do encoding detection.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	873
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	874 `coding-system'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	875 If encoding detection is not done, use the specified coding system
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	876 to do decoding. This is used internally when implementing coding
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	877 systems with an EOL type that specifies autodetection (the default),
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	878 so that the detector routines return the proper subsidiary.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	879
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	880
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	881
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	882 The following additional property is recognized if TYPE is `gzip':
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	883
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	884 `level'
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	885 Compression level: 0 through 9, or `default' (currently 6)."
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	886 (when (eq 'fixed-width type)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	887 (setq props (fixed-width-rework-props-runtime name props)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	888 (make-coding-system-internal name type description props))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	889
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	890 (define-compiler-macro make-coding-system (&whole form name type
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	891 &optional description props)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	892 (if (equal '(quote fixed-width) type)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	893 (if (memq (car-safe props) '(quote eval-when-compile))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	894 (let* ((props (if (eq 'eval-when-compile (car props))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	895 (eval (cadr props))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	896 (cadr props)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	897 (encode-failure-octet
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	898 (or (plist-get props 'encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	899 (char-to-int ?~)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	900 (unicode-map (plist-get props 'unicode-map))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	901 (default-plist-entry (gensym))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	902 (encode-table-sym (gensym
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	903 (if (eq 'quote (car name))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	904 (format "%s-enc-" (second name)))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	905 encode-program decode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	906 decode-table encode-table
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	907 skip-chars invalid-sequences-skip-chars category)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	908
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	909 (check-argument-range encode-failure-octet 0 #xFF)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	910 ;; unicode-map must be a true list, and must be non-nil.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	911 (check-argument-type #'true-list-p unicode-map)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	912 (check-argument-type #'consp unicode-map)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	913
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	914 ;; Don't pass on our extra data to make-coding-system-internal.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	915 (setq props (plist-remprop props 'encode-failure-octet)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	916 props (plist-remprop props 'unicode-map))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	917
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	918 (multiple-value-setq
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	919 (decode-table encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	920 (fixed-width-create-decode-encode-tables unicode-map))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	921
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	922 ;; Generate the decode and encode programs, and the skip-chars
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	923 ;; arguments.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	924 (setq decode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	925 (fixed-width-generate-decode-program decode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	926 category (fixed-width-choose-category decode-table))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	927
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	928 (multiple-value-setq
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	929 (encode-program skip-chars invalid-sequences-skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	930 (fixed-width-generate-encode-program-and-skip-chars-strings
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	931 decode-table encode-table encode-failure-octet))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	932
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	933 (unless (vectorp decode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	934 (setq decode-program
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	935 (apply #'vector decode-program)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	936
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	937 (unless (eq default-plist-entry (plist-get props 'encode
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	938 default-plist-entry))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	939 (error
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	940 'invalid-argument
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	941 "Explicit property not allowed for fixed-width coding system"
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	942 'encode))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	943 (loop for (symbol . value)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	944 in `((decode . ,decode-program)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	945 (from-unicode . ,encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	946 (query-skip-chars . ,skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	947 (invalid-sequences-skip-chars .
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	948 ,invalid-sequences-skip-chars)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	949 (category . ,category))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	950 do
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	951 (unless (eq default-plist-entry (plist-get props symbol
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	952 default-plist-entry))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	953 (error
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	954 'invalid-argument
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	955 "Explicit property not allowed for \
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	956 fixed-width coding systems"
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	957 symbol))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	958 (setq props (nconc (list symbol value) props)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	959 `(progn
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	960 (define-translation-hash-table ',encode-table-sym ,encode-table)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	961 (make-coding-system-internal
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	962 ,name ,type ,description
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	963 ',(nconc (list 'encode
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	964 (apply #'vector
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	965 (nsublis
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	966 (list (cons 'encode-table-sym
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	967 encode-table-sym))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	968 encode-program)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	969 props))))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	970 ;; The form does not use literals; call make-coding-system at
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	971 ;; run time.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	972 form)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	973 (if (byte-compile-constp type)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	974 ;; This is not a fixed-width call; compile it to a form that 21.4
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	975 ;; can also understand.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	976 `(funcall (or (and (fboundp 'make-coding-system-internal)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	977 'make-coding-system-internal)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	978 'make-coding-system)
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	979 ,@(cdr form))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	980 ;; TYPE is not literal; work things out at runtime.
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	981 form)))
257b468bf2ca Move the #'query-coding-region implementation to C. Aidan Kehoe <kehoea@parhasard.net> parents: diff changeset	982

Mercurial > hg > xemacs-beta

annotate lisp/mule/make-coding-system.el @ 5406:061f4f90f874