2 * iso2022.c - support for ISO/IEC 2022 (alias ECMA-35).
4 * This isn't a complete implementation of ISO/IEC 2022, but it's
5 * close. It only handles decoding, because a fully general encoder
6 * isn't really useful. It can decode 8-bit and 7-bit versions, with
7 * support for single-byte and multi-byte character sets, all four
8 * containers (G0, G1, G2, and G3), using both single-shift and
9 * locking-shift sequences.
11 * The general principle is that any valid ISO/IEC 2022 sequence
12 * should either be correctly decoded or should emit an ERROR. The
13 * only exception to this is that the C0 and C1 sets are fixed as
14 * those of ISO/IEC 6429. Escape sequences for designating control
15 * sets are passed through, so a post-processor could fix them up if
18 * DOCS to UTF-8 works. Other DOCS sequences are ignored, which will
19 * produce surprising results.
36 enum {S4
, S6
, M4
, M6
};
38 static long int emacs_big5_1_to_unicode(int, int);
39 static long int emacs_big5_2_to_unicode(int, int);
40 static long int cns11643_1_to_unicode(int, int);
41 static long int cns11643_2_to_unicode(int, int);
42 static long int cns11643_3_to_unicode(int, int);
43 static long int cns11643_4_to_unicode(int, int);
44 static long int cns11643_5_to_unicode(int, int);
45 static long int cns11643_6_to_unicode(int, int);
46 static long int cns11643_7_to_unicode(int, int);
47 static long int null_dbcs_to_unicode(int, int);
49 const struct iso2022_subcharset
{
52 const sbcs_data
*sbcs_base
;
53 long int (*dbcs_fn
)(int, int);
54 } iso2022_subcharsets
[] = {
55 { S4
, 0, '0', 0x00, &sbcsdata_CS_DEC_GRAPHICS
},
56 { S4
, 0, '<', 0x80, &sbcsdata_CS_DEC_MCS
},
57 { S4
, 0, 'A', 0x00, &sbcsdata_CS_BS4730
},
58 { S4
, 0, 'B', 0x00, &sbcsdata_CS_ASCII
},
59 { S4
, 0, 'I', 0x80, &sbcsdata_CS_JISX0201
},
60 { S4
, 0, 'J', 0x00, &sbcsdata_CS_JISX0201
},
62 { S6
, 0, 'A', 0x80, &sbcsdata_CS_ISO8859_1
},
63 { S6
, 0, 'B', 0x80, &sbcsdata_CS_ISO8859_2
},
64 { S6
, 0, 'C', 0x80, &sbcsdata_CS_ISO8859_3
},
65 { S6
, 0, 'D', 0x80, &sbcsdata_CS_ISO8859_4
},
66 { S6
, 0, 'F', 0x80, &sbcsdata_CS_ISO8859_7
},
67 { S6
, 0, 'G', 0x80, &sbcsdata_CS_ISO8859_6
},
68 { S6
, 0, 'H', 0x80, &sbcsdata_CS_ISO8859_8
},
69 { S6
, 0, 'L', 0x80, &sbcsdata_CS_ISO8859_5
},
70 { S6
, 0, 'M', 0x80, &sbcsdata_CS_ISO8859_9
},
71 { S6
, 0, 'T', 0x80, &sbcsdata_CS_ISO8859_11
},
72 { S6
, 0, 'V', 0x80, &sbcsdata_CS_ISO8859_10
},
73 { S6
, 0, 'Y', 0x80, &sbcsdata_CS_ISO8859_13
},
74 { S6
, 0, '_', 0x80, &sbcsdata_CS_ISO8859_14
},
75 { S6
, 0, 'b', 0x80, &sbcsdata_CS_ISO8859_15
},
76 { S6
, 0, 'f', 0x80, &sbcsdata_CS_ISO8859_16
},
77 { S6
, 0, '~' }, /* empty 96-set */
79 { M4
, 0, '@' }, /* JIS C 6226-1978 */
81 { M4
, 0, '0', -0x21, 0, &emacs_big5_1_to_unicode
},
82 { M4
, 0, '1', -0x21, 0, &emacs_big5_2_to_unicode
},
83 { M4
, 0, 'A', -0x21, 0, &gb2312_to_unicode
},
84 { M4
, 0, 'B', -0x21, 0, &jisx0208_to_unicode
},
85 { M4
, 0, 'C', -0x21, 0, &ksx1001_to_unicode
},
86 { M4
, 0, 'D', -0x21, 0, &jisx0212_to_unicode
},
87 { M4
, 0, 'G', -0x21, 0, &cns11643_1_to_unicode
},
88 { M4
, 0, 'H', -0x21, 0, &cns11643_2_to_unicode
},
89 { M4
, 0, 'I', -0x21, 0, &cns11643_3_to_unicode
},
90 { M4
, 0, 'J', -0x21, 0, &cns11643_4_to_unicode
},
91 { M4
, 0, 'K', -0x21, 0, &cns11643_5_to_unicode
},
92 { M4
, 0, 'L', -0x21, 0, &cns11643_6_to_unicode
},
93 { M4
, 0, 'M', -0x21, 0, &cns11643_7_to_unicode
},
94 { M4
, 0, '~', 0, 0, &null_dbcs_to_unicode
}, /* empty 94^n-set */
95 { M6
, 0, '~', 0, 0, &null_dbcs_to_unicode
}, /* empty 96^n-set */
98 static long int null_dbcs_to_unicode(int r
, int c
)
104 * Emacs encodes Big5 in COMPOUND_TEXT as two 94x94 character sets.
105 * We treat Big5 as a 94x191 character set with a bunch of undefined
106 * columns in the middle, so we have to mess around a bit to make
110 static long int emacs_big5_1_to_unicode(int r
, int c
)
116 if (c
>= 64) c
+= 34; /* Skip over the gap */
117 return big5_to_unicode(r
, c
);
120 static long int emacs_big5_2_to_unicode(int r
, int c
)
126 if (c
>= 64) c
+= 34; /* Skip over the gap */
127 return big5_to_unicode(r
, c
);
130 /* Wrappers for cns11643_to_unicode() */
131 static long int cns11643_1_to_unicode(int r
, int c
)
133 return cns11643_to_unicode(0, r
, c
);
135 static long int cns11643_2_to_unicode(int r
, int c
)
137 return cns11643_to_unicode(1, r
, c
);
139 static long int cns11643_3_to_unicode(int r
, int c
)
141 return cns11643_to_unicode(2, r
, c
);
143 static long int cns11643_4_to_unicode(int r
, int c
)
145 return cns11643_to_unicode(3, r
, c
);
147 static long int cns11643_5_to_unicode(int r
, int c
)
149 return cns11643_to_unicode(4, r
, c
);
151 static long int cns11643_6_to_unicode(int r
, int c
)
153 return cns11643_to_unicode(5, r
, c
);
155 static long int cns11643_7_to_unicode(int r
, int c
)
157 return cns11643_to_unicode(6, r
, c
);
160 /* States, or "what we're currently accumulating". */
162 IDLE
, /* None of the below */
163 SS2CHAR
, /* Accumulating a character after SS2 */
164 SS3CHAR
, /* Accumulating a character after SS3 */
165 ESCSEQ
, /* Accumulating an escape sequence */
166 ESCDROP
, /* Discarding an escape sequence */
167 ESCPASS
, /* Passing through an escape sequence */
168 DOCSUTF8
, /* DOCSed into UTF-8 */
169 DOCSCTEXT
/* DOCSed into a COMPOUND_TEXT extended segment */
174 static void dump_state(charset_state
*s
)
176 unsigned s0
= s
->s0
, s1
= s
->s1
;
177 char const * const modes
[] = { "IDLE", "SS2CHAR", "SS3CHAR",
178 "ESCSEQ", "ESCDROP", "ESCPASS",
181 fprintf(stderr
, "s0: %s", modes
[s0
>> 29]);
182 fprintf(stderr
, " %02x %02x %02x ", (s0
>> 16) & 0xff, (s0
>> 8) & 0xff,
184 fprintf(stderr
, "s1: LS%d LS%dR", (s1
>> 30) & 3, (s1
>> 28) & 3);
185 fprintf(stderr
, " %d %d %d %d\n", s1
& 0x7f, (s1
>> 7) & 0x7f,
186 (s1
>> 14) & 0x7f, (s1
>> 21) & 0x7f);
190 static void designate(charset_state
*state
, int container
,
191 int type
, int ibyte
, int fbyte
)
195 assert(container
>= 0 && container
<= 3);
196 assert(type
== S4
|| type
== S6
|| type
== M4
|| type
== M6
);
198 for (i
= 0; i
<= lenof(iso2022_subcharsets
); i
++) {
199 if (iso2022_subcharsets
[i
].type
== type
&&
200 iso2022_subcharsets
[i
].i
== ibyte
&&
201 iso2022_subcharsets
[i
].f
== fbyte
) {
202 state
->s1
&= ~(0x7fL
<< (container
* 7));
203 state
->s1
|= (i
<< (container
* 7));
208 * If we don't find the charset, invoke the empty one, so we
209 * output ERROR rather than garbage.
211 designate(state
, container
, type
, 0, '~');
214 static void do_utf8(long int input_chr
,
215 charset_state
*state
,
216 void (*emit
)(void *ctx
, long int output
),
219 charset_state ustate
;
222 ustate
.s0
= state
->s0
& 0x03ffffffL
;
223 read_utf8(NULL
, input_chr
, &ustate
, emit
, emitctx
);
224 state
->s0
= (state
->s0
& ~0x03ffffffL
) | (ustate
.s0
& 0x03ffffffL
);
227 static void docs_utf8(long int input_chr
,
228 charset_state
*state
,
229 void (*emit
)(void *ctx
, long int output
),
235 * Bits [25:0] of s0 are reserved for read_utf8().
236 * Bits [27:26] are a tiny state machine to recognise ESC % @.
238 retstate
= (state
->s0
& 0x0c000000L
) >> 26;
239 if (retstate
== 1 && input_chr
== '%')
241 else if (retstate
== 2 && input_chr
== '@') {
242 /* If we've got a partial UTF-8 sequence, complain. */
243 if (state
->s0
& 0x03ffffffL
)
244 emit(emitctx
, ERROR
);
248 if (retstate
>= 1) do_utf8(ESC
, state
, emit
, emitctx
);
249 if (retstate
>= 2) do_utf8('%', state
, emit
, emitctx
);
251 if (input_chr
== ESC
)
254 do_utf8(input_chr
, state
, emit
, emitctx
);
257 state
->s0
= (state
->s0
& ~0x0c000000L
) | (retstate
<< 26);
260 struct ctext_encoding
{
262 charset_spec
const *subcs
;
266 * In theory, this list is in <http://ftp.x.org/pub/docs/registry>,
267 * but XLib appears to have its own ideas, and encodes these three
271 extern charset_spec
const charset_CS_ISO8859_14
;
272 extern charset_spec
const charset_CS_ISO8859_15
;
273 extern charset_spec
const charset_CS_BIG5
;
275 static struct ctext_encoding
const ctext_encodings
[] = {
276 { "big5-0\2", &charset_CS_BIG5
},
277 { "iso8859-14\2", &charset_CS_ISO8859_14
},
278 { "iso8859-15\2", &charset_CS_ISO8859_15
}
281 static void docs_ctext(long int input_chr
,
282 charset_state
*state
,
283 void (*emit
)(void *ctx
, long int output
),
287 * s0[27:26] = first entry in ctext_encodings that matches
288 * s0[25:22] = number of characters successfully matched, 0xf if all
289 * s0[21:8] count the number of octets left in the segment
290 * s0[7:0] are for sub-charset use
292 int n
= (state
->s0
>> 22) & 0xf, i
= (state
->s0
>> 26) & 3, oi
= i
, j
;
293 int length
= (state
->s0
>> 8) & 0x3fff;
296 /* Haven't read length yet */
297 if ((state
->s0
& 0xff) == 0)
298 /* ... or even the first byte */
299 state
->s0
|= input_chr
;
301 length
= (state
->s0
& 0x7f) * 0x80 + (input_chr
& 0x7f);
305 state
->s0
= (state
->s0
& 0xf0000000) | (length
<< 8);
312 /* Skipping unknown encoding. Look out for STX. */
314 state
->s0
= (state
->s0
& 0xf0000000) | (i
<< 26) | (0xf << 22);
315 } else if (n
!= 0xf) {
316 while (j
< lenof(ctext_encodings
) &&
317 !memcmp(ctext_encodings
[j
].name
,
318 ctext_encodings
[oi
].name
, n
)) {
319 if (ctext_encodings
[j
].name
[n
] < input_chr
)
324 if (i
>= lenof(ctext_encodings
) ||
325 memcmp(ctext_encodings
[i
].name
,
326 ctext_encodings
[oi
].name
, n
) ||
327 ctext_encodings
[i
].name
[n
] != input_chr
) {
328 /* Doom! We haven't heard of this encoding */
329 i
= lenof(ctext_encodings
);
333 * Otherwise, we have found an additional character in our
334 * encoding name. See if we have reached the _end_ of our
338 if (!ctext_encodings
[i
].name
[n
])
342 * Failing _that_, we simply update our encoding-name-
345 assert(i
< 4 && n
< 16);
346 state
->s0
= (state
->s0
& 0xf0000000) | (i
<< 26) | (n
<< 22);
348 if (i
>= lenof(ctext_encodings
))
349 emit(emitctx
, ERROR
);
351 charset_state substate
;
352 charset_spec
const *subcs
= ctext_encodings
[i
].subcs
;
354 substate
.s0
= state
->s0
& 0xff;
355 subcs
->read(subcs
, input_chr
, &substate
, emit
, emitctx
);
356 state
->s0
= (state
->s0
& ~0xff) | (substate
.s0
& 0xff);
362 state
->s0
= (state
->s0
&~0x003fff00) | (length
<< 8);
365 static void read_iso2022(charset_spec
const *charset
, long int input_chr
,
366 charset_state
*state
,
367 void (*emit
)(void *ctx
, long int output
),
371 /* dump_state(state); */
373 * We have to make fairly efficient use of the 64 bits of state
374 * available to us. Long-term state goes in s1, and consists of
375 * the identities of the character sets designated as G0/G1/G2/G3
376 * and the locking-shift states for GL and GR. Short-term state
377 * goes in s0: The bottom half of s0 accumulates characters for an
378 * escape sequence or a multi-byte character, while the top three
379 * bits indicate what they're being accumulated for. After DOCS,
380 * the bottom 29 bits of state are available for the DOCS function
381 * to use -- the UTF-8 one uses the bottom 26 for UTF-8 decoding
382 * and the top two to recognised ESC % @.
384 * s0[31:29] = state enum
385 * s0[24:0] = accumulated bytes
386 * s1[31:30] = GL locking-shift state
387 * s1[29:28] = GR locking-shift state
388 * s1[27:21] = G3 charset
389 * s1[20:14] = G2 charset
390 * s1[13:7] = G1 charset
391 * s1[6:0] = G0 charset
396 #define LOCKING_SHIFT(n,side) \
397 (state->s1 = (state->s1 & ~(3L<<(side))) | ((n ## L)<<(side)))
398 #define MODE ((state->s0 & 0xe0000000L) >> 29)
399 #define ENTER_MODE(m) (state->s0 = (state->s0 & ~0xe0000000L) | ((m)<<29))
400 #define SINGLE_SHIFT(n) ENTER_MODE(SS2CHAR - 2 + (n))
401 #define ASSERT_IDLE do { \
402 if (state->s0 != 0) emit(emitctx, ERROR); \
406 if (state
->s1
== 0) {
408 * Since there's no LS0R, this means we must just have started.
409 * Set up a sane initial state (LS0, LS1R, ASCII in G0/G1/G2/G3).
411 LOCKING_SHIFT(0, LEFT
);
412 LOCKING_SHIFT(1, RIGHT
);
413 designate(state
, 0, S4
, 0, 'B');
414 designate(state
, 1, S4
, 0, 'B');
415 designate(state
, 2, S4
, 0, 'B');
416 designate(state
, 3, S4
, 0, 'B');
419 if (MODE
== DOCSUTF8
) {
420 docs_utf8(input_chr
, state
, emit
, emitctx
);
423 if (MODE
== DOCSCTEXT
) {
424 docs_ctext(input_chr
, state
, emit
, emitctx
);
428 if ((input_chr
& 0x60) == 0x00) {
429 /* C0 or C1 control */
436 LOCKING_SHIFT(0, LEFT
);
439 LOCKING_SHIFT(1, LEFT
);
448 emit(emitctx
, input_chr
);
451 } else if ((input_chr
& 0x80) || MODE
< ESCSEQ
) {
453 struct iso2022_subcharset
const *subcs
;
458 * Force idle state if we're in mid escape sequence, or in a
459 * multi-byte character with a different top bit.
461 if (MODE
>= ESCSEQ
||
462 ((state
->s0
& 0x00ff0000L
) != 0 &&
463 (((state
->s0
>> 16) ^ input_chr
) & 0x80)))
465 if (MODE
== SS2CHAR
|| MODE
== SS3CHAR
) /* Single-shift */
466 container
= MODE
- SS2CHAR
+ 2;
467 else if (input_chr
>= 0x80) /* GR */
468 container
= (state
->s1
>> 28) & 3;
470 container
= state
->s1
>> 30;
473 input_7bit
= input_chr
& ~0x80;
474 subcs
= &iso2022_subcharsets
[(state
->s1
>> (container
* 7)) & 0x7f];
475 if ((subcs
->type
== S4
|| subcs
->type
== M4
) &&
476 (input_7bit
== 0x20 || input_7bit
== 0x7f)) {
477 /* characters not in 94-char set */
478 if (is_gl
) emit(emitctx
, input_7bit
);
479 else emit(emitctx
, ERROR
);
480 } else if (subcs
->type
== M4
|| subcs
->type
== M6
) {
481 if ((state
->s0
& 0x00ff0000L
) == 0) {
482 state
->s0
|= input_chr
<< 16;
486 subcs
->dbcs_fn(((state
->s0
>> 16) & 0x7f) + subcs
->offset
,
487 input_7bit
+ subcs
->offset
));
490 if ((state
->s0
& 0x00ff0000L
) != 0)
491 emit(emitctx
, ERROR
);
492 emit(emitctx
, subcs
->sbcs_base ?
493 sbcs_to_unicode(subcs
->sbcs_base
, input_7bit
+ subcs
->offset
):
499 if (MODE
== ESCPASS
) {
500 emit(emitctx
, input_chr
);
501 if ((input_chr
& 0xf0) != 0x20)
507 * Intermediate bytes shall be any of the 16 positions of
508 * column 02 of the code table; they are denoted by the symbol
511 if ((input_chr
& 0xf0) == 0x20) {
512 if (((state
->s0
>> 16) & 0xff) == 0)
513 state
->s0
|= input_chr
<< 16;
514 else if (((state
->s0
>> 8) & 0xff) == 0)
515 state
->s0
|= input_chr
<< 8;
517 /* Long escape sequence. Switch to ESCPASS or ESCDROP. */
518 i1
= (state
->s0
>> 16) & 0xff;
519 i2
= (state
->s0
>> 8) & 0xff;
521 case '(': case ')': case '*': case '+':
522 case '-': case '.': case '/':
530 emit(emitctx
, input_chr
);
540 * Final bytes shall be any of the 79 positions of columns 03
541 * to 07 of the code table excluding position 07/15; they are
542 * denoted by the symbol F.
544 i1
= (state
->s0
>> 16) & 0xff;
545 i2
= (state
->s0
>> 8) & 0xff;
547 input_chr
= 0; /* Make sure it won't match. */
550 case 0: /* No intermediate bytes */
559 LOCKING_SHIFT(2, LEFT
);
562 LOCKING_SHIFT(3, LEFT
);
565 LOCKING_SHIFT(3, RIGHT
);
568 LOCKING_SHIFT(2, RIGHT
);
571 LOCKING_SHIFT(1, RIGHT
);
574 /* Unsupported escape sequence. Spit it back out. */
576 emit(emitctx
, input_chr
);
581 * Various coding structure facilities specify that designating
582 * a code element also invokes it. As far as I can see, invoking
583 * it now will have the same practical effect, since those
584 * facilities also ban the use of locking shifts.
587 case 'A': /* G0 element used and invoked into GL */
588 LOCKING_SHIFT(0, LEFT
);
590 case 'C': /* G0 in GL, G1 in GR */
591 case 'D': /* Ditto, at least for 8-bit codes */
592 case 'L': /* ISO 4873 (ECMA-43) level 1 */
593 case 'M': /* ISO 4873 (ECMA-43) level 2 */
594 LOCKING_SHIFT(0, LEFT
);
595 LOCKING_SHIFT(1, RIGHT
);
601 * IRR (Identify Revised Registration) is ignored here,
602 * since any revised registration must be
603 * upward-compatible with the old one, so either we'll
604 * support the new one or we'll emit ERROR when we run
605 * into a new character. In either case, there's nothing
609 case '(': /* GZD4 */ case ')': /* G1D4 */
610 case '*': /* G2D4 */ case '+': /* G3D4 */
611 designate(state
, i1
- '(', S4
, i2
, input_chr
);
613 case '-': /* G1D6 */ case '.': /* G2D6 */ case '/': /* G3D6 */
614 designate(state
, i1
- ',', S6
, i2
, input_chr
);
616 case '$': /* G?DM? */
618 case 0: /* Obsolete version of GZDM4 */
620 case '(': /* GZDM4 */ case ')': /* G1DM4 */
621 case '*': /* G2DM4 */ case '+': /* G3DM4 */
622 designate(state
, i2
- '(', M4
, 0, input_chr
);
624 case '-': /* G1DM6 */
625 case '.': /* G2DM6 */ case '/': /* G3DM6 */
626 designate(state
, i2
- ',', M6
, 0, input_chr
);
629 emit(emitctx
, ERROR
);
633 /* XXX What's a reasonable way to handle an unrecognised DOCS? */
638 ENTER_MODE(DOCSUTF8
);
645 ENTER_MODE(DOCSCTEXT
);
652 /* Unsupported nF escape sequence. Re-emit it. */
655 if (i2
) emit(emitctx
, i2
);
656 emit(emitctx
, input_chr
);
662 static int write_iso2022(charset_spec
const *charset
, long int input_chr
,
663 charset_state
*state
,
664 void (*emit
)(void *ctx
, long int output
),
670 const charset_spec charset_CS_ISO2022
= {
671 CS_ISO2022
, read_iso2022
, write_iso2022
, NULL
682 void iso2022_emit(void *ctx
, long output
)
684 wchar_t **p
= (wchar_t **)ctx
;
688 void iso2022_read_test(int line
, char *input
, int inlen
, ...)
691 wchar_t *p
, str
[512];
696 state
.s0
= state
.s1
= 0;
699 for (i
= 0; i
< inlen
; i
++)
700 read_iso2022(NULL
, input
[i
] & 0xFF, &state
, iso2022_emit
, &p
);
704 for (i
= 0; i
< p
- str
; i
++) {
705 l
= va_arg(ap
, long int);
707 printf("%d: correct string shorter than output\n", line
);
712 printf("%d: char %d came out as %08x, should be %08lx\n",
718 l
= va_arg(ap
, long int);
720 printf("%d: correct string longer than output\n", line
);
727 /* Macro to concoct the first three parameters of iso2022_read_test. */
728 #define TESTSTR(x) __LINE__, x, lenof(x)
732 printf("read tests beginning\n");
733 /* Simple test (Emacs sample text for Japanese, in ISO-2022-JP) */
734 iso2022_read_test(TESTSTR("Japanese (\x1b$BF|K\\8l\x1b(B)\t"
735 "\x1b$B$3$s$K$A$O\x1b(B, "
736 "\x1b$B%3%s%K%A%O\x1b(B\n"),
737 'J','a','p','a','n','e','s','e',' ','(',
738 0x65E5, 0x672C, 0x8A9E, ')', '\t',
739 0x3053, 0x3093, 0x306b, 0x3061, 0x306f, ',', ' ',
740 0x30b3, 0x30f3, 0x30cb, 0x30c1, 0x30cf, '\n', 0, -1);
741 /* Same thing in EUC-JP (with designations, and half-width katakana) */
742 iso2022_read_test(TESTSTR("\x1b$)B\x1b*I\x1b$+D"
743 "Japanese (\xc6\xfc\xcb\xdc\xb8\xec)\t"
744 "\xa4\xb3\xa4\xf3\xa4\xcb\xa4\xc1\xa4\xcf, "
745 "\x8e\xba\x8e\xdd\x8e\xc6\x8e\xc1\x8e\xca\n"),
746 'J','a','p','a','n','e','s','e',' ','(',
747 0x65E5, 0x672C, 0x8A9E, ')', '\t',
748 0x3053, 0x3093, 0x306b, 0x3061, 0x306f, ',', ' ',
749 0xff7a, 0xff9d, 0xff86, 0xff81, 0xff8a, '\n', 0, -1);
750 /* Multibyte single-shift */
751 iso2022_read_test(TESTSTR("\x1b$)B\x1b*I\x1b$+D\x8f\"/!"),
753 /* Non-existent SBCS */
754 iso2022_read_test(TESTSTR("\x1b(!Zfnord\n"),
755 ERROR
, ERROR
, ERROR
, ERROR
, ERROR
, '\n', 0, -1);
756 /* Pass-through of ordinary escape sequences, including a long one */
757 iso2022_read_test(TESTSTR("\x1b""b\x1b#5\x1b#!!!5"),
758 0x1B, 'b', 0x1B, '#', '5',
759 0x1B, '#', '!', '!', '!', '5', 0, -1);
760 /* Non-existent DBCS (also 5-byte escape sequence) */
761 iso2022_read_test(TESTSTR("\x1b$(!Bfnord!"),
762 ERROR
, ERROR
, ERROR
, 0, -1);
763 /* Incomplete DB characters */
764 iso2022_read_test(TESTSTR("\x1b$B(,(\x1b(BHi\x1b$B(,(\n"),
765 0x2501, ERROR
, 'H', 'i', 0x2501, ERROR
, '\n', 0, -1);
766 iso2022_read_test(TESTSTR("\x1b$)B\x1b*I\x1b$+D\xa4""B"),
768 iso2022_read_test(TESTSTR("\x1b$)B\x1b*I\x1b$+D\x0e\x1b|$\xa2\xaf"),
769 ERROR
, 0x02D8, 0, -1);
770 /* Incomplete escape sequence */
771 iso2022_read_test(TESTSTR("\x1b\n"), ERROR
, '\n', 0, -1);
772 iso2022_read_test(TESTSTR("\x1b-A\x1b~\x1b\xa1"), ERROR
, 0xa1, 0, -1);
773 /* Incomplete single-shift */
774 iso2022_read_test(TESTSTR("\x8e\n"), ERROR
, '\n', 0, -1);
775 iso2022_read_test(TESTSTR("\x1b$*B\x8e(\n"), ERROR
, '\n', 0, -1);
776 /* Corner cases (02/00 and 07/15) */
777 iso2022_read_test(TESTSTR("\x1b(B\x20\x7f"), 0x20, 0x7f, 0, -1);
778 iso2022_read_test(TESTSTR("\x1b(I\x20\x7f"), 0x20, 0x7f, 0, -1);
779 iso2022_read_test(TESTSTR("\x1b$B\x20\x7f"), 0x20, 0x7f, 0, -1);
780 iso2022_read_test(TESTSTR("\x1b-A\x0e\x20\x7f"), 0xa0, 0xff, 0, -1);
781 iso2022_read_test(TESTSTR("\x1b$-~\x0e\x20\x7f"), ERROR
, 0, -1);
782 iso2022_read_test(TESTSTR("\x1b)B\xa0\xff"), ERROR
, ERROR
, 0, -1);
783 iso2022_read_test(TESTSTR("\x1b)I\xa0\xff"), ERROR
, ERROR
, 0, -1);
784 iso2022_read_test(TESTSTR("\x1b$)B\xa0\xff"), ERROR
, ERROR
, 0, -1);
785 iso2022_read_test(TESTSTR("\x1b-A\x1b~\xa0\xff"), 0xa0, 0xff, 0, -1);
786 iso2022_read_test(TESTSTR("\x1b$-~\x1b~\xa0\xff"), ERROR
, 0, -1);
787 /* Designate control sets */
788 iso2022_read_test(TESTSTR("\x1b!@"), 0x1b, '!', '@', 0, -1);
789 /* Designate other coding system (UTF-8) */
790 iso2022_read_test(TESTSTR("\x1b%G"
791 "\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5"),
792 0x03BA, 0x1F79, 0x03C3, 0x03BC, 0x03B5, 0, -1);
793 iso2022_read_test(TESTSTR("\x1b-A\x1b%G\xCE\xBA\x1b%@\xa0"),
794 0x03BA, 0xA0, 0, -1);
795 iso2022_read_test(TESTSTR("\x1b%G\xCE\x1b%@"), ERROR
, 0, -1);
796 iso2022_read_test(TESTSTR("\x1b%G\xCE\xBA\x1b%\x1b%@"),
797 0x03BA, 0x1B, '%', 0, -1);
798 /* DOCS (COMPOUND_TEXT extended segment) */
799 iso2022_read_test(TESTSTR("\x1b%/1\x80\x80"), 0, -1);
800 iso2022_read_test(TESTSTR("\x1b%/1\x80\x8fiso-8859-15\2xyz\x1b(B"),
801 ERROR
, ERROR
, ERROR
, 0, -1);
802 iso2022_read_test(TESTSTR("\x1b%/1\x80\x8eiso8859-15\2xyz\x1b(B"),
803 'x', 'y', 'z', 0, -1);
804 iso2022_read_test(TESTSTR("\x1b-A\x1b%/2\x80\x89"
805 "big5-0\2\xa1\x40\xa1\x40"),
806 0x3000, 0xa1, 0x40, 0, -1);
807 /* Emacs Big5-in-ISO-2022 mapping */
808 iso2022_read_test(TESTSTR("\x1b$(0&x86\x1b(B \x1b$(0DeBv"),
809 0x5143, 0x6c23, ' ', ' ', 0x958b, 0x767c, 0, -1);
810 /* Test from RFC 1922 (ISO-2022-CN) */
811 iso2022_read_test(TESTSTR("\x1b$)A\x0e=;;;\x1b$)GG(_P\x0f"),
812 0x4EA4, 0x6362, 0x4EA4, 0x63db, 0, -1);
814 printf("read tests completed\n");
815 printf("total: %d errors\n", total_errs
);
816 return (total_errs
!= 0);
819 #endif /* TESTMODE */
821 #else /* ENUM_CHARSETS */
823 ENUM_CHARSET(CS_ISO2022
)