486 lines
12 KiB
C
486 lines
12 KiB
C
/* $XTermId: charsets.c,v 1.42 2011/09/11 14:40:17 tom Exp $ */
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/*
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* Copyright 1998-2009,2011 by Thomas E. Dickey
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*
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* All Rights Reserved
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name(s) of the above copyright
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* holders shall not be used in advertising or otherwise to promote the
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* sale, use or other dealings in this Software without prior written
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* authorization.
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*
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*/
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#include <xterm.h>
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#include <data.h>
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#include <fontutils.h>
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#include <X11/keysym.h>
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/*
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* This module performs translation as needed to support the DEC VT220 national
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* replacement character sets. We assume that xterm's font is based on the ISO
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* 8859-1 (Latin 1) character set, which is almost the same as the DEC
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* multinational character set. Glyph positions 0-31 have to be the DEC
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* graphic characters, though.
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*
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* References:
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* "VT220 Programmer Pocket Guide" EK-VT220-HR-002 (2nd ed., 1984), which
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* contains character charts for the national character sets.
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* "VT330/VT340 Programmer Reference Manual Volume 1: Text Programming"
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* EK-VT3XX-TP-001 (1st ed, 1987), which contains a table (2-1)
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* listing the glyphs which are mapped from the multinational
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* character set to the national character set.
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*
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* The latter reference, though easier to read, has a few errors and omissions.
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*/
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/*
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* Translate an input keysym to the corresponding NRC keysym.
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*/
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unsigned
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xtermCharSetIn(unsigned code, int charset)
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{
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#define MAP(to, from) case from: code = to; break
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if (code >= 128 && code < 256) {
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switch (charset) {
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case 'A': /* United Kingdom set (or Latin 1) */
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if (code == XK_sterling)
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code = 0x23;
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code &= 0x7f;
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break;
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#if OPT_XMC_GLITCH
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case '?':
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#endif
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case '1': /* Alternate Character ROM standard characters */
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case '2': /* Alternate Character ROM special graphics */
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case 'B': /* ASCII set */
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break;
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case '0': /* special graphics (line drawing) */
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break;
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case '4': /* Dutch */
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switch (code) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_threequarters);
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MAP(0x5b, XK_ydiaeresis);
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MAP(0x5c, XK_onehalf);
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MAP(0x5d, XK_bar); /* glyph is not ISO-8859-1 */
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MAP(0x7b, XK_diaeresis);
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MAP(0x7c, XK_f); /* glyph is not ISO-8859-1 */
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MAP(0x7d, XK_onequarter);
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MAP(0x7e, XK_acute);
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}
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break;
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case 'C':
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case '5': /* Finnish */
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switch (code) {
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MAP(0x5b, XK_Adiaeresis);
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MAP(0x5c, XK_Odiaeresis);
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MAP(0x5d, XK_Aring);
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MAP(0x5e, XK_Udiaeresis);
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MAP(0x60, XK_eacute);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_aring);
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MAP(0x7e, XK_udiaeresis);
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}
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break;
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case 'R': /* French */
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switch (code) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_agrave);
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MAP(0x5b, XK_degree);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_section);
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MAP(0x7b, XK_eacute);
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MAP(0x7c, XK_ugrave);
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MAP(0x7d, XK_egrave);
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MAP(0x7e, XK_diaeresis);
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}
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break;
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case 'Q': /* French Canadian */
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switch (code) {
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MAP(0x40, XK_agrave);
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MAP(0x5b, XK_acircumflex);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_ecircumflex);
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MAP(0x5e, XK_icircumflex);
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MAP(0x60, XK_ocircumflex);
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MAP(0x7b, XK_eacute);
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MAP(0x7c, XK_ugrave);
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MAP(0x7d, XK_egrave);
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MAP(0x7e, XK_ucircumflex);
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}
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break;
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case 'K': /* German */
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switch (code) {
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MAP(0x40, XK_section);
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MAP(0x5b, XK_Adiaeresis);
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MAP(0x5c, XK_Odiaeresis);
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MAP(0x5d, XK_Udiaeresis);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_udiaeresis);
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MAP(0x7e, XK_ssharp);
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}
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break;
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case 'Y': /* Italian */
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switch (code) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_section);
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MAP(0x5b, XK_degree);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_eacute);
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MAP(0x60, XK_ugrave);
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MAP(0x7b, XK_agrave);
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MAP(0x7c, XK_ograve);
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MAP(0x7d, XK_egrave);
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MAP(0x7e, XK_igrave);
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}
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break;
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case 'E':
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case '6': /* Norwegian/Danish */
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switch (code) {
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MAP(0x40, XK_Adiaeresis);
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MAP(0x5b, XK_AE);
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MAP(0x5c, XK_Ooblique);
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MAP(0x5d, XK_Aring);
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MAP(0x5e, XK_Udiaeresis);
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MAP(0x60, XK_adiaeresis);
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MAP(0x7b, XK_ae);
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MAP(0x7c, XK_oslash);
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MAP(0x7d, XK_aring);
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MAP(0x7e, XK_udiaeresis);
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}
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break;
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case 'Z': /* Spanish */
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switch (code) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_section);
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MAP(0x5b, XK_exclamdown);
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MAP(0x5c, XK_Ntilde);
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MAP(0x5d, XK_questiondown);
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MAP(0x7b, XK_degree);
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MAP(0x7c, XK_ntilde);
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MAP(0x7d, XK_ccedilla);
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}
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break;
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case 'H':
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case '7': /* Swedish */
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switch (code) {
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MAP(0x40, XK_Eacute);
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MAP(0x5b, XK_Adiaeresis);
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MAP(0x5c, XK_Odiaeresis);
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MAP(0x5d, XK_Aring);
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MAP(0x5e, XK_Udiaeresis);
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MAP(0x60, XK_eacute);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_aring);
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MAP(0x7e, XK_udiaeresis);
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}
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break;
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case '=': /* Swiss */
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switch (code) {
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MAP(0x23, XK_ugrave);
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MAP(0x40, XK_agrave);
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MAP(0x5b, XK_eacute);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_ecircumflex);
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MAP(0x5e, XK_icircumflex);
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MAP(0x5f, XK_egrave);
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MAP(0x60, XK_ocircumflex);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_udiaeresis);
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MAP(0x7e, XK_ucircumflex);
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}
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break;
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default: /* any character sets we don't recognize */
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break;
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}
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code &= 0x7f; /* NRC in any case is 7-bit */
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}
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return code;
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#undef MAP
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}
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/*
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* Translate a string to the display form. This assumes the font has the
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* DEC graphic characters in cells 0-31, and otherwise is ISO-8859-1.
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*/
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int
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xtermCharSetOut(XtermWidget xw, IChar * buf, IChar * ptr, int leftset)
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{
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IChar *s;
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TScreen *screen = TScreenOf(xw);
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int count = 0;
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int rightset = screen->gsets[(int) (screen->curgr)];
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#define MAP(from, to) case from: chr = to; break
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TRACE(("CHARSET GL=%c(G%d) GR=%c(G%d) SS%d\n\t%s\n",
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leftset, screen->curgl,
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rightset, screen->curgr,
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screen->curss,
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visibleIChar(buf, (unsigned) (ptr - buf))));
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for (s = buf; s < ptr; ++s) {
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int eight = CharOf(E2A(*s));
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int seven = eight & 0x7f;
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int cs = (eight >= 128) ? rightset : leftset;
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int chr = eight;
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count++;
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#if OPT_WIDE_CHARS
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/*
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* This is only partly right - prevent inadvertant remapping of
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* the replacement character and other non-8bit codes into bogus
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* 8bit codes.
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*/
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if (screen->utf8_mode) {
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if (*s > 255)
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continue;
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}
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#endif
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switch (cs) {
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case 'A': /* United Kingdom set (or Latin 1) */
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if ((xw->flags & NATIONAL)
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|| (screen->vtXX_level <= 1)) {
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if (chr == 0x23) {
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#if OPT_WIDE_CHARS
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chr = (screen->utf8_mode
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? 0xa3
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: XTERM_POUND);
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#else
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chr = XTERM_POUND;
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#endif
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}
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} else {
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chr = (seven | 0x80);
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}
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break;
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#if OPT_XMC_GLITCH
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case '?':
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#endif
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case '1': /* Alternate Character ROM standard characters */
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case '2': /* Alternate Character ROM special graphics */
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case 'B': /* ASCII set */
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break;
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case '0': /* special graphics (line drawing) */
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if (seven > 0x5f && seven <= 0x7e) {
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#if OPT_WIDE_CHARS
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if (screen->utf8_mode)
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chr = (int) dec2ucs((unsigned) (seven - 0x5f));
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else
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#endif
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chr = seven - 0x5f;
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} else {
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chr = seven;
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}
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break;
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case '4': /* Dutch */
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switch (chr = seven) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_threequarters);
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MAP(0x5b, XK_ydiaeresis);
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MAP(0x5c, XK_onehalf);
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MAP(0x5d, XK_bar);
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MAP(0x7b, XK_diaeresis);
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MAP(0x7c, XK_f);
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MAP(0x7d, XK_onequarter);
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MAP(0x7e, XK_acute);
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}
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break;
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case 'C':
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case '5': /* Finnish */
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switch (chr = seven) {
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MAP(0x5b, XK_Adiaeresis);
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MAP(0x5c, XK_Odiaeresis);
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MAP(0x5d, XK_Aring);
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MAP(0x5e, XK_Udiaeresis);
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MAP(0x60, XK_eacute);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_aring);
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MAP(0x7e, XK_udiaeresis);
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}
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break;
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case 'R': /* French */
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switch (chr = seven) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_agrave);
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MAP(0x5b, XK_degree);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_section);
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MAP(0x7b, XK_eacute);
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MAP(0x7c, XK_ugrave);
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MAP(0x7d, XK_egrave);
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MAP(0x7e, XK_diaeresis);
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}
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break;
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case 'Q': /* French Canadian */
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switch (chr = seven) {
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MAP(0x40, XK_agrave);
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MAP(0x5b, XK_acircumflex);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_ecircumflex);
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MAP(0x5e, XK_icircumflex);
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MAP(0x60, XK_ocircumflex);
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MAP(0x7b, XK_eacute);
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MAP(0x7c, XK_ugrave);
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MAP(0x7d, XK_egrave);
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MAP(0x7e, XK_ucircumflex);
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}
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break;
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case 'K': /* German */
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switch (chr = seven) {
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MAP(0x40, XK_section);
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MAP(0x5b, XK_Adiaeresis);
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MAP(0x5c, XK_Odiaeresis);
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MAP(0x5d, XK_Udiaeresis);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_udiaeresis);
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MAP(0x7e, XK_ssharp);
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}
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break;
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case 'Y': /* Italian */
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switch (chr = seven) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_section);
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MAP(0x5b, XK_degree);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_eacute);
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MAP(0x60, XK_ugrave);
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MAP(0x7b, XK_agrave);
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MAP(0x7c, XK_ograve);
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MAP(0x7d, XK_egrave);
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MAP(0x7e, XK_igrave);
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}
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break;
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case 'E':
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case '6': /* Norwegian/Danish */
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switch (chr = seven) {
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MAP(0x40, XK_Adiaeresis);
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MAP(0x5b, XK_AE);
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MAP(0x5c, XK_Ooblique);
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MAP(0x5d, XK_Aring);
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MAP(0x5e, XK_Udiaeresis);
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MAP(0x60, XK_adiaeresis);
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MAP(0x7b, XK_ae);
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MAP(0x7c, XK_oslash);
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MAP(0x7d, XK_aring);
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MAP(0x7e, XK_udiaeresis);
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}
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break;
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case 'Z': /* Spanish */
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switch (chr = seven) {
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MAP(0x23, XK_sterling);
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MAP(0x40, XK_section);
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MAP(0x5b, XK_exclamdown);
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MAP(0x5c, XK_Ntilde);
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MAP(0x5d, XK_questiondown);
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MAP(0x7b, XK_degree);
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MAP(0x7c, XK_ntilde);
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MAP(0x7d, XK_ccedilla);
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}
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break;
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case 'H':
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case '7': /* Swedish */
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switch (chr = seven) {
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MAP(0x40, XK_Eacute);
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MAP(0x5b, XK_Adiaeresis);
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MAP(0x5c, XK_Odiaeresis);
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MAP(0x5d, XK_Aring);
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MAP(0x5e, XK_Udiaeresis);
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MAP(0x60, XK_eacute);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_aring);
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MAP(0x7e, XK_udiaeresis);
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}
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break;
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case '=': /* Swiss */
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switch (chr = seven) {
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MAP(0x23, XK_ugrave);
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MAP(0x40, XK_agrave);
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MAP(0x5b, XK_eacute);
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MAP(0x5c, XK_ccedilla);
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MAP(0x5d, XK_ecircumflex);
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MAP(0x5e, XK_icircumflex);
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MAP(0x5f, XK_egrave);
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MAP(0x60, XK_ocircumflex);
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MAP(0x7b, XK_adiaeresis);
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MAP(0x7c, XK_odiaeresis);
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MAP(0x7d, XK_udiaeresis);
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MAP(0x7e, XK_ucircumflex);
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}
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break;
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default: /* any character sets we don't recognize */
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count--;
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break;
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}
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/*
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* The state machine already treated DEL as a nonprinting and
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* nonspacing character. If we have DEL now, simply render
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* it as a blank.
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*/
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if (chr == ANSI_DEL)
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chr = ' ';
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*s = (IChar) A2E(chr);
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}
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TRACE(("%d\t%s\n",
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count,
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visibleIChar(buf, (unsigned) (ptr - buf))));
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return count;
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#undef MAP
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}
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