vte: add special character sets
Since vt100 (and extended with vt220) you can load different character sets into GL and GR. As we use UTF-8 as base encoding, we actually do not need them but have to support it for backwards compatibility. For further information, see the comments in vte_charsets.c. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann
parent
6b5fb5613d
commit
771e08de07
@ -49,6 +49,7 @@ libkmscon_core_la_SOURCES = \
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src/eloop.c src/eloop.h \
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src/vt.c src/vt.h \
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src/vte.c src/vte.h \
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src/vte_charsets.c \
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src/terminal.c src/terminal.h \
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src/pty.c src/pty.h \
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src/uterm.h src/uterm_internal.h \
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11
src/vte.h
11
src/vte.h
@ -37,6 +37,17 @@
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#include "console.h"
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#include "unicode.h"
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/* available character sets */
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typedef kmscon_symbol_t kmscon_vte_charset[96];
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extern kmscon_vte_charset kmscon_vte_unicode_lower;
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extern kmscon_vte_charset kmscon_vte_unicode_upper;
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extern kmscon_vte_charset kmscon_vte_dec_supplemental_graphics;
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extern kmscon_vte_charset kmscon_vte_dec_special_graphics;
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/* virtual terminal emulator */
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struct kmscon_vte;
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enum kmscon_vte_keyboard_action {
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501
src/vte_charsets.c
Normal file
501
src/vte_charsets.c
Normal file
@ -0,0 +1,501 @@
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/*
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* kmscon - VT Emulator
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*
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* Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "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 AUTHORS OR COPYRIGHT HOLDERS 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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/*
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* VTE Character Sets
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* These are predefined charactersets that can be loaded into GL and GR. By
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* default we use unicode_lower and unicode_upper, that is, both sets have the
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* exact unicode mapping. unicode_lower is effectively ASCII and unicode_upper
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* as defined by the unicode standard.
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* Several other character sets are defined here. However, all of them are
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* limited to the 96 character space of GL or GR. Everything beyond GR (which
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* was not supported by the classic VTs by DEC but is available in VT emulators
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* that support unicode/UTF8) is always mapped to unicode and cannot be changed
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* by these character sets. Even mapping GL and GR is only available for
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* backwards compatibility as new applications can use the Unicode functionality
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* of the VTE.
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*
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* Moreover, mapping GR is almost unnecessary to support. In fact, Unicode UTF-8
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* support in VTE works by reading every incoming data as UTF-8 stream. This
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* maps GL/ASCII to ASCII, as UTF-8 is backwards compatible to ASCII, however,
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* everything that has the 8th bit set is a >=2-byte haracter in UTF-8. That is,
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* this is in no way backwards compatible to >=VT220 8bit support. Therefore, if
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* someone maps a character set into GR and wants to use them with this VTE,
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* then they must already send UTF-8 characters to use GR (all GR characters are
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* 8-bits). Hence, they can easily also send the correct UTF-8 character for the
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* unicode mapping.
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* The only advantage is that most characters in many sets are 3-byte UTF-8
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* characters and by mapping the set into GR/GL you can use 2 or 1 byte UTF-8
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* characters which saves bandwidth.
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* Another reason is, if you have older applications that use the VT220 8-bit
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* support and you put a ASCII/8bit-extension to UTF-8 converter in between, you
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* need these mappings to have the application behave correctly if it uses GL/GR
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* mappings extensively.
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*
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* Anyway, we support GL/GR mappings so here are the most commonly used maps as
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* defined by Unicode-standard, DEC-private maps and other famous charmaps.
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*
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* Characters 1-32 are always the control characters (part of CL) and cannot be
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* mapped. Characters 34-127 (94 characters) are part of GL and can be mapped.
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* Characters 33 and 128 are not part of GL and always mapped by VTE but are
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* included here in the maps for alignment reasons but always set to 0.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "log.h"
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#include "unicode.h"
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#include "vte.h"
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#define LOG_SUBSYSTEM "vte"
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/*
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* Lower Unicode character set. This maps the characters to the basic ASCII
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* characters 33-126. These are all graphics characters defined in ASCII. The
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* first an last entry are never used so we can safely set them to anything.
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*/
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kmscon_vte_charset kmscon_vte_unicode_lower = {
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[0] = 0,
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[1] = 33,
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[2] = 34,
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[3] = 35,
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[4] = 36,
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[5] = 37,
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[6] = 38,
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[7] = 39,
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[8] = 40,
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[9] = 41,
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[10] = 42,
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[11] = 43,
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[12] = 44,
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[13] = 45,
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[14] = 46,
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[15] = 47,
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[16] = 48,
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[17] = 49,
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[18] = 50,
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[19] = 51,
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[20] = 52,
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[21] = 53,
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[22] = 54,
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[23] = 55,
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[24] = 56,
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[25] = 57,
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[26] = 58,
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[27] = 59,
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[28] = 60,
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[29] = 61,
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[30] = 62,
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[31] = 63,
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[32] = 64,
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[33] = 65,
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[34] = 66,
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[35] = 67,
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[36] = 68,
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[37] = 69,
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[38] = 70,
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[39] = 71,
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[40] = 72,
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[41] = 73,
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[42] = 74,
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[43] = 75,
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[44] = 76,
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[45] = 77,
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[46] = 78,
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[47] = 79,
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[48] = 80,
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[49] = 81,
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[50] = 82,
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[51] = 83,
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[52] = 84,
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[53] = 85,
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[54] = 86,
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[55] = 87,
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[56] = 88,
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[57] = 89,
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[58] = 90,
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[59] = 91,
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[60] = 92,
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[61] = 93,
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[62] = 94,
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[63] = 95,
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[64] = 96,
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[65] = 97,
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[66] = 98,
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[67] = 99,
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[68] = 100,
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[69] = 101,
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[70] = 102,
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[71] = 103,
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[72] = 104,
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[73] = 105,
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[74] = 106,
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[75] = 107,
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[76] = 108,
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[77] = 109,
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[78] = 110,
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[79] = 111,
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[80] = 112,
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[81] = 113,
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[82] = 114,
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[83] = 115,
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[84] = 116,
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[85] = 117,
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[86] = 118,
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[87] = 119,
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[88] = 120,
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[89] = 121,
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[90] = 122,
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[91] = 123,
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[92] = 124,
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[93] = 125,
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[94] = 126,
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[95] = 0,
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};
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/*
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* Upper Unicode Table
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* This maps all characters to the upper unicode characters 161-254. These are
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* not compatible to any older 8 bit character sets. See the Unicode standard
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* for the definitions of each symbol. Again, the first an last entry are never
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* used so set them to 0.
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*/
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kmscon_vte_charset kmscon_vte_unicode_upper = {
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[0] = 0,
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[1] = 161,
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[2] = 162,
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[3] = 163,
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[4] = 164,
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[5] = 165,
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[6] = 166,
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[7] = 167,
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[8] = 168,
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[9] = 169,
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[10] = 170,
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[11] = 171,
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[12] = 172,
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[13] = 173,
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[14] = 174,
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[15] = 175,
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[16] = 176,
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[17] = 177,
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[18] = 178,
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[19] = 179,
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[20] = 180,
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[21] = 181,
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[22] = 182,
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[23] = 183,
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[24] = 184,
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[25] = 185,
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[26] = 186,
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[27] = 187,
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[28] = 188,
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[29] = 189,
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[30] = 190,
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[31] = 191,
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[32] = 192,
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[33] = 193,
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[34] = 194,
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[35] = 195,
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[36] = 196,
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[37] = 197,
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[38] = 198,
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[39] = 199,
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[40] = 200,
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[41] = 201,
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[42] = 202,
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[43] = 203,
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[44] = 204,
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[45] = 205,
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[46] = 206,
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[47] = 207,
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[48] = 208,
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[49] = 209,
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[50] = 210,
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[51] = 211,
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[52] = 212,
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[53] = 213,
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[54] = 214,
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[55] = 215,
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[56] = 216,
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[57] = 217,
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[58] = 218,
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[59] = 219,
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[60] = 220,
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[61] = 221,
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[62] = 222,
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[63] = 223,
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[64] = 224,
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[65] = 225,
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[66] = 226,
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[67] = 227,
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[68] = 228,
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[69] = 229,
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[70] = 230,
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[71] = 231,
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[72] = 232,
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[73] = 233,
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[74] = 234,
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[75] = 235,
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[76] = 236,
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[77] = 237,
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[78] = 238,
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[79] = 239,
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[80] = 240,
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[81] = 241,
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[82] = 242,
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[83] = 243,
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[84] = 244,
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[85] = 245,
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[86] = 246,
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[87] = 247,
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[88] = 248,
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[89] = 249,
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[90] = 250,
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[91] = 251,
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[92] = 252,
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[93] = 253,
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[94] = 254,
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[95] = 0,
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};
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/*
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* The DEC supplemental graphics set. For its definition see here:
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* http://vt100.net/docs/vt220-rm/table2-3b.html
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* Its basically a mixture of common European symbols that are not part of
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* ASCII. Most often, this is mapped into GR to extend the basci ASCII part.
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*
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* This is very similar to unicode_upper, however, few symbols differ so do not
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* mix them up!
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*/
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kmscon_vte_charset kmscon_vte_dec_supplemental_graphics = {
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[0] = 0,
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[1] = 161,
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[2] = 162,
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[3] = 163,
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[4] = 0,
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[5] = 165,
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[6] = 0,
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[7] = 167,
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[8] = 164,
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[9] = 169,
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[10] = 170,
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[11] = 171,
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[12] = 0,
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[13] = 0,
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[14] = 0,
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[15] = 0,
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[16] = 176,
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[17] = 177,
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[18] = 178,
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[19] = 179,
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[20] = 0,
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[21] = 181,
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[22] = 182,
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[23] = 183,
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[24] = 0,
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[25] = 185,
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[26] = 186,
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[27] = 187,
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[28] = 188,
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[29] = 189,
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[30] = 0,
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[31] = 191,
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[32] = 192,
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[33] = 193,
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[34] = 194,
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[35] = 195,
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[36] = 196,
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[37] = 197,
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[38] = 198,
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[39] = 199,
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[40] = 200,
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[41] = 201,
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[42] = 202,
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[43] = 203,
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[44] = 204,
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[45] = 205,
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[46] = 206,
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[47] = 207,
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[48] = 0,
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[49] = 209,
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[50] = 210,
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[51] = 211,
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[52] = 212,
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[53] = 213,
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[54] = 214,
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[55] = 338,
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[56] = 216,
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[57] = 217,
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[58] = 218,
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[59] = 219,
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[60] = 220,
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[61] = 376,
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[62] = 0,
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[63] = 223,
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[64] = 224,
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[65] = 225,
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[66] = 226,
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[67] = 227,
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[68] = 228,
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[69] = 229,
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[70] = 230,
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[71] = 231,
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[72] = 232,
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[73] = 233,
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[74] = 234,
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[75] = 235,
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[76] = 236,
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[77] = 237,
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[78] = 238,
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[79] = 239,
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[80] = 0,
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[81] = 241,
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[82] = 242,
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[83] = 243,
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[84] = 244,
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[85] = 245,
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[86] = 246,
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[87] = 339,
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[88] = 248,
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[89] = 249,
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[90] = 250,
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[91] = 251,
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[92] = 252,
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[93] = 255,
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[94] = 0,
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[95] = 0,
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};
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/*
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* DEC special graphics character set. See here for its definition:
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* http://vt100.net/docs/vt220-rm/table2-4.html
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* This contains several characters to create ASCII drawings and similar. Its
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* commonaly mapped into GR to extend the basic ASCII characters.
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*
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* Lower 62 characters map to ASCII 33-64, everything beyond is special and
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* commonly used for ASCII drawings. It depends on the Unicode Standard 3.2 for
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* the extended horizontal scan-line characters 3, 5, 7, and 9.
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*/
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kmscon_vte_charset kmscon_vte_dec_special_graphics = {
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[0] = 0,
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[1] = 33,
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[2] = 34,
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[3] = 35,
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[4] = 36,
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[5] = 37,
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[6] = 38,
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[7] = 39,
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[8] = 40,
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[9] = 41,
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[10] = 42,
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[11] = 43,
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[12] = 44,
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[13] = 45,
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[14] = 46,
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[15] = 47,
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[16] = 48,
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[17] = 49,
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[18] = 50,
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[19] = 51,
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[20] = 52,
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[21] = 53,
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[22] = 54,
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[23] = 55,
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[24] = 56,
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[25] = 57,
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[26] = 58,
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[27] = 59,
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[28] = 60,
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[29] = 61,
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[30] = 62,
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[31] = 63,
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[32] = 64,
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[33] = 65,
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[34] = 66,
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[35] = 67,
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[36] = 68,
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[37] = 69,
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[38] = 70,
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[39] = 71,
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[40] = 72,
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[41] = 73,
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[42] = 74,
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[43] = 75,
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[44] = 76,
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[45] = 77,
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[46] = 78,
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[47] = 79,
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[48] = 80,
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[49] = 81,
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[50] = 82,
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[51] = 83,
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[52] = 84,
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[53] = 85,
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[54] = 86,
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[55] = 87,
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[56] = 88,
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[57] = 89,
|
||||
[58] = 90,
|
||||
[59] = 91,
|
||||
[60] = 92,
|
||||
[61] = 93,
|
||||
[62] = 94,
|
||||
[63] = 0,
|
||||
[64] = 9830,
|
||||
[65] = 9618,
|
||||
[66] = 9225,
|
||||
[67] = 9228,
|
||||
[68] = 9229,
|
||||
[69] = 9226,
|
||||
[70] = 176,
|
||||
[71] = 177,
|
||||
[72] = 9252,
|
||||
[73] = 9227,
|
||||
[74] = 9496,
|
||||
[75] = 9488,
|
||||
[76] = 9484,
|
||||
[77] = 9492,
|
||||
[78] = 9532,
|
||||
[79] = 9146,
|
||||
[80] = 9147,
|
||||
[81] = 9472,
|
||||
[82] = 9148,
|
||||
[83] = 9149,
|
||||
[84] = 9500,
|
||||
[85] = 9508,
|
||||
[86] = 9524,
|
||||
[87] = 9516,
|
||||
[88] = 9474,
|
||||
[89] = 8804,
|
||||
[90] = 8805,
|
||||
[91] = 960,
|
||||
[92] = 8800,
|
||||
[93] = 163,
|
||||
[94] = 8901,
|
||||
[95] = 0,
|
||||
};
|
||||
Loading…
x
Reference in New Issue
Block a user