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/*-
* Copyright (c) 2003, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <asn_internal.h>
#include <TeletexString.h>
/*
* TeletexString basic type description.
*/
static ber_tlv_tag_t asn_DEF_TeletexString_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (20 << 2)), /* [UNIVERSAL 20] IMPLICIT ...*/
(ASN_TAG_CLASS_UNIVERSAL | (4 << 2)), /* ... OCTET STRING */
};
asn_TYPE_descriptor_t asn_DEF_TeletexString = {
"TeletexString",
"TeletexString",
OCTET_STRING_free,
OCTET_STRING_print, /* non-ascii string */
asn_generic_unknown_constraint,
OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */
OCTET_STRING_encode_der,
OCTET_STRING_decode_xer_hex,
OCTET_STRING_encode_xer,
OCTET_STRING_decode_uper,
OCTET_STRING_encode_uper,
0, /* Use generic outmost tag fetcher */
asn_DEF_TeletexString_tags,
sizeof(asn_DEF_TeletexString_tags)
/ sizeof(asn_DEF_TeletexString_tags[0]) - 1,
asn_DEF_TeletexString_tags,
sizeof(asn_DEF_TeletexString_tags)
/ sizeof(asn_DEF_TeletexString_tags[0]),
0, /* No PER visible constraints */
0, 0, /* No members */
0 /* No specifics */
};
/*
* Here is a formal attempt at creating a mapping from TeletexString
* (T61String) of the latest ASN.1 standard (X.680:2002) into the Unicode
* character set. -- Lev Walkin <vlm@lionet.info>
*
* The first thing to keep in mind is that TeletexString (T61String)
* is defined in ASN.1, and is not really a T.61 string.
* The T.61 standard is withdrawn by ITU-T and is no longer an authoritative
* reference. See http://www.itu.int/rec/T-REC-T.61
*
* The X.680 specifies TeletexString (T61String) as a combination of the
* character sets specified by the registration numbers listed in
* ISO International Register of Coded Character Sets to be used with
* Escape Sequences (ISO-2375):
* 6, 87, 102, 103, 106, 107, 126, 144, 150, 153, 156, 164, 165, 168,
* plus SPACE and DELETE characters.
* In addition to that, the X.680 Table 6 NOTE 2 allows using register entries
* 6 and 156 instead of 102 and 103.
*
* The ISO Register itself is available at http://www.itscj.ipsj.or.jp/ISO-IR/
*
* #6 is ASCII. http://www.itscj.ipsj.or.jp/ISO-IR/006.pdf
* Escapes into:
* G0: ESC 2/8 4/2 ("(B")
* G1: ESC 2/9 4/2 (")B")
* The range is [0x21 .. 0x7e]. Conversion into Unicode
* is simple, because it has one-to-one correspondence.
* #87 is a "Japanese Graphic Character Set for Information Interchange".
* Is a multiple-byte set of 6877 characters.
* The character set is JIS X 0208-1983 (originally JIS C 6226-1983).
* Escapes into:
* G0: ESC 2/4 4/2 ("$B")
* G1: ESC 2/4 2/9 4/2 ("$)B")
* G2: ESC 2/4 2/10 4/2 ("$*B")
* G3: ESC 2/4 2/11 4/2 ("$+B")
* #102 is "Teletex Primary Set of Graphic Characters" and is almost ASCII.
* Escapes into:
* G0: ESC 2/8 7/5 ("(u")
* G1: ESC 2/9 7/5 (")u")
* G2: ESC 2/10 7/5 ("*u")
* G3: ESC 2/11 7/5 ("+u")
* It is almost identical to ASCII, except for ASCII position for '$'
* (DOLLAR SIGN) is filled with '¤' (CURRENCY SIGN), which is U+00A4.
* Also, ASCII positions for '`', '\', '^', '{', '}', '~' are marked
* as "should not be used".
* #103 is a supplementary set of characters used in combination with #102.
* Escapes into:
* G0: ESC 2/8 7/6 ("(v")
* G1: ESC 2/9 7/6 (")v")
* G2: ESC 2/10 7/6 ("*v")
* G3: ESC 2/11 7/6 ("+v")
* Some characters in that character set are combining characters,
* which can only be restrictively used with certain basic Latin letters.
* It can be thought of as a subset of #156 with the exception of 4/12
* which is UNDERLINE in #103 and absent in #156.
* #106 is a primary set of control functions, used in combination with #107.
* Escapes into:
* C0: ESC 2/1 4/5 ("!E")
* This set is so short I can list it here:
* 0x08 BS BACKSPACE -- same as Unicode
* 0x0a LF LINE FEED -- same as Unicode
* 0x0c FF FORM FEED -- same as Unicode
* 0x0d CR CARRIAGE RETURN -- same as Unicode
* 0x0e LS1 LOCKING SHIFT ONE
* 0x0f LS0 LOCKING SHIFT ZERO
* 0x19 SS2 SINGLE SHIFT TWO
* 0x1a SUB SUBSTITUTE CHARACTER
* 0x1b ESC ESCAPE -- same as Unicode
* 0x1d SS3 SINGLE SHIFT THREE
* The LS1 and LS0 are two magical functions which, respectively, invoke
* the currently designated G1 or G0 set into positions 2/1 to 7/14
* The SS2 and SS3, respectively, invoke one character of the
* currently designated set G2 and G3.
* The SUB is wholly equivalent to U+001a (SUBSTITUTE)
* #107 is a supplementary set of control functions, used with #106.
* Escapes into:
* C1: ESC 2/2 4/8 ('"H')
* This set contains three special control codes:
* 0x8b PLD PARTIAL LINE DOWN -- similar to <SUB>
* 0x8c PLU PARTIAL LINE UP -- sumilar to <SUP>
* 0x9b CSI CONTROL SEQUENCE INTRODUCER
* This set is so out of world we can probably safely ignore it.
* #126 is a "Right-hand Part of the Latin/Greek Alphabet".
* Comprises of 90 characters, including accented letters.
* Escapes into:
* G1: ESC 2/13 4/6 ("-F")
* G2: ESC 2/14 4/6 (".F")
* G3: ESC 2/15 4/6 ("/F")
* Note: This Registration is a subset of ISO-IR 227.
* #144 is a "Cyrillic part of the Latin/Cyrillic Alphabet".
* Comprises of 95 characters.
* Escapes into:
* G1: ESC 2/13 4/12 ("-L")
* G2: ESC 2/14 4/12 (".L")
* G3: ESC 2/15 4/12 ("/L")
* #150 is a "Greek Primary Set of Graphic Characters".
* Comprises of 94 characters.
* Escapes into:
* G0: ESC 2/8 2/1 4/0 ("(!@")
* G1: ESC 2/9 2/1 4/0 (")!@")
* G2: ESC 2/10 2/1 4/0 ("*!@")
* G3: ESC 2/11 2/1 4/0 ("+!@")
* #153 is a "Basic Cyrillic Character Set for 8-bit codes".
* Comprises of 68 characters.
* Escapes into:
* G1: ESC 2/13 4/15 ("-O")
* G2: ESC 2/14 4/15 (".O")
* G3: ESC 2/15 4/15 ("/O")
* #156 is a "Supplementary Set of ISO/IEC 6937:1992" for use with #6
* Comprises of 87 characters.
* Escapes into:
* G1: ESC 2/13 5/2 ("-R")
* G2: ESC 2/14 5/2 (".R")
* G3: ESC 2/15 5/2 ("/R")
* #164 is a "Hebrew Supplementary Set of Graphic Characters"
* Comprises of 27 characters.
* Escapes into:
* G1: ESC 2/13 5/3 ("-S")
* G2: ESC 2/14 5/3 (".S")
* G3: ESC 2/15 5/3 ("/S")
* #165 is a set of "Codes of the Chinese graphic character set"
* Is a multiple-byte set of 8446 characters.
* Escapes into:
* G0: ESC 2/4 2/8 4/5 ("$(E")
* G1: ESC 2/4 2/9 4/5 ("$)E")
* G2: ESC 2/4 2/10 4/5 ("$*E")
* G3: ESC 2/4 2/11 4/5 ("$+E")
* #168 is a "Japanese Graphic Character Set for Information Interchange"
* A multiple-byte set of 6879 characters updated from #87.
* Escapes into:
* G0: ESC 2/6 4/0 ESC 2/4 4/2 ("&@" "$B")
* G1: ESC 2/6 4/0 ESC 2/4 2/9 4/2 ("&@" "$)B")
* G2: ESC 2/6 4/0 ESC 2/4 2/10 4/2 ("&@" "$*B")
* G3: ESC 2/6 4/0 ESC 2/4 2/11 4/2 ("&@" "$+B")
*/
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