1 /* Header for code conversion stuff
2 Copyright (C) 1991, 1995 Free Software Foundation, Inc.
3 Copyright (C) 1995 Sun Microsystems, Inc.
5 This file is part of XEmacs.
7 XEmacs is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with XEmacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* Synched up with: Mule 2.3. Not in FSF. */
24 /* 91.10.09 written by K.Handa <handa@etl.go.jp> */
25 /* Rewritten by Ben Wing <ben@xemacs.org>. */
27 #ifndef INCLUDED_file_coding_h_
28 #define INCLUDED_file_coding_h_
30 struct decoding_stream;
31 struct encoding_stream;
33 /* Coding system types. These go into the TYPE field of a
34 Lisp_Coding_System. */
36 enum coding_system_type
38 CODESYS_AUTODETECT, /* Automatic conversion. */
40 CODESYS_SHIFT_JIS, /* Shift-JIS; Hankaku (half-width) KANA
42 CODESYS_ISO2022, /* Any ISO2022-compliant coding system.
43 Includes JIS, EUC, CTEXT */
44 CODESYS_BIG5, /* BIG5 (used for Taiwanese). */
45 CODESYS_UCS4, /* ISO 10646 UCS-4 */
46 CODESYS_UTF8, /* ISO 10646 UTF-8 */
47 CODESYS_CCL, /* Converter written in CCL. */
49 CODESYS_NO_CONVERSION /* "No conversion"; used for binary files.
50 We use quotes because there really
51 is some conversion being applied,
52 but it appears to the user as if
53 the text is read in without conversion. */
55 ,CODESYS_INTERNAL /* Raw (internally-formatted) data. */
66 typedef enum eol_type eol_type_t;
69 typedef struct charset_conversion_spec charset_conversion_spec;
70 struct charset_conversion_spec
72 Lisp_Object from_charset;
73 Lisp_Object to_charset;
78 Dynarr_declare (charset_conversion_spec);
79 } charset_conversion_spec_dynarr;
82 struct Lisp_Coding_System
84 struct lcrecord_header header;
86 /* Name and doc string of this coding system. */
88 Lisp_Object doc_string;
90 /* This is the major type of the coding system -- one of Big5, ISO2022,
91 Shift-JIS, etc. See the constants above. */
92 enum coding_system_type type;
94 /* Mnemonic string displayed in the modeline when this coding
95 system is active for a particular buffer. */
98 Lisp_Object post_read_conversion;
99 Lisp_Object pre_write_conversion;
103 /* Subsidiary coding systems that specify a particular type of EOL
104 marking, rather than autodetecting it. These will only be non-nil
105 if (eol_type == EOL_AUTODETECT). */
107 Lisp_Object eol_crlf;
112 /* What are the charsets to be initially designated to G0, G1,
113 G2, G3? If t, no charset is initially designated. If nil,
114 no charset is initially designated and no charset is allowed
116 Lisp_Object initial_charset[4];
118 /* If true, a designation escape sequence needs to be sent on output
119 for the charset in G[0-3] before that charset is used. */
120 unsigned char force_charset_on_output[4];
122 charset_conversion_spec_dynarr *input_conv;
123 charset_conversion_spec_dynarr *output_conv;
125 unsigned int shoort :1; /* C makes you speak Dutch */
126 unsigned int no_ascii_eol :1;
127 unsigned int no_ascii_cntl :1;
128 unsigned int seven :1;
129 unsigned int lock_shift :1;
130 unsigned int no_iso6429 :1;
131 unsigned int escape_quoted :1;
135 /* For a CCL coding system, these specify the CCL programs used for
136 decoding (input) and encoding (output). */
142 char disable_composition;
145 typedef struct Lisp_Coding_System Lisp_Coding_System;
147 DECLARE_LRECORD (coding_system, Lisp_Coding_System);
148 #define XCODING_SYSTEM(x) XRECORD (x, coding_system, Lisp_Coding_System)
149 #define XSETCODING_SYSTEM(x, p) XSETRECORD (x, p, coding_system)
150 #define CODING_SYSTEMP(x) RECORDP (x, coding_system)
151 #define CHECK_CODING_SYSTEM(x) CHECK_RECORD (x, coding_system)
152 #define CONCHECK_CODING_SYSTEM(x) CONCHECK_RECORD (x, coding_system)
154 #define CODING_SYSTEM_NAME(codesys) ((codesys)->name)
155 #define CODING_SYSTEM_DOC_STRING(codesys) ((codesys)->doc_string)
156 #define CODING_SYSTEM_TYPE(codesys) ((codesys)->type)
157 #define CODING_SYSTEM_MNEMONIC(codesys) ((codesys)->mnemonic)
158 #define CODING_SYSTEM_POST_READ_CONVERSION(codesys) \
159 ((codesys)->post_read_conversion)
160 #define CODING_SYSTEM_PRE_WRITE_CONVERSION(codesys) \
161 ((codesys)->pre_write_conversion)
162 #define CODING_SYSTEM_EOL_TYPE(codesys) ((codesys)->eol_type)
163 #define CODING_SYSTEM_EOL_LF(codesys) ((codesys)->eol_lf)
164 #define CODING_SYSTEM_EOL_CRLF(codesys) ((codesys)->eol_crlf)
165 #define CODING_SYSTEM_EOL_CR(codesys) ((codesys)->eol_cr)
168 #define CODING_SYSTEM_ISO2022_INITIAL_CHARSET(codesys, g) \
169 ((codesys)->iso2022.initial_charset[g])
170 #define CODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT(codesys, g) \
171 ((codesys)->iso2022.force_charset_on_output[g])
172 #define CODING_SYSTEM_ISO2022_SHORT(codesys) ((codesys)->iso2022.shoort)
173 #define CODING_SYSTEM_ISO2022_NO_ASCII_EOL(codesys) \
174 ((codesys)->iso2022.no_ascii_eol)
175 #define CODING_SYSTEM_ISO2022_NO_ASCII_CNTL(codesys) \
176 ((codesys)->iso2022.no_ascii_cntl)
177 #define CODING_SYSTEM_ISO2022_SEVEN(codesys) ((codesys)->iso2022.seven)
178 #define CODING_SYSTEM_ISO2022_LOCK_SHIFT(codesys) \
179 ((codesys)->iso2022.lock_shift)
180 #define CODING_SYSTEM_ISO2022_NO_ISO6429(codesys) \
181 ((codesys)->iso2022.no_iso6429)
182 #define CODING_SYSTEM_ISO2022_ESCAPE_QUOTED(codesys) \
183 ((codesys)->iso2022.escape_quoted)
184 #define CODING_SYSTEM_CCL_DECODE(codesys) ((codesys)->ccl.decode)
185 #define CODING_SYSTEM_CCL_ENCODE(codesys) ((codesys)->ccl.encode)
188 #define CODING_SYSTEM_DISABLE_COMPOSITION(codesys) \
189 ((codesys)->disable_composition)
192 #define XCODING_SYSTEM_NAME(codesys) \
193 CODING_SYSTEM_NAME (XCODING_SYSTEM (codesys))
194 #define XCODING_SYSTEM_DOC_STRING(codesys) \
195 CODING_SYSTEM_DOC_STRING (XCODING_SYSTEM (codesys))
196 #define XCODING_SYSTEM_TYPE(codesys) \
197 CODING_SYSTEM_TYPE (XCODING_SYSTEM (codesys))
198 #define XCODING_SYSTEM_MNEMONIC(codesys) \
199 CODING_SYSTEM_MNEMONIC (XCODING_SYSTEM (codesys))
200 #define XCODING_SYSTEM_POST_READ_CONVERSION(codesys) \
201 CODING_SYSTEM_POST_READ_CONVERSION (XCODING_SYSTEM (codesys))
202 #define XCODING_SYSTEM_PRE_WRITE_CONVERSION(codesys) \
203 CODING_SYSTEM_PRE_WRITE_CONVERSION (XCODING_SYSTEM (codesys))
204 #define XCODING_SYSTEM_EOL_TYPE(codesys) \
205 CODING_SYSTEM_EOL_TYPE (XCODING_SYSTEM (codesys))
206 #define XCODING_SYSTEM_EOL_LF(codesys) \
207 CODING_SYSTEM_EOL_LF (XCODING_SYSTEM (codesys))
208 #define XCODING_SYSTEM_EOL_CRLF(codesys) \
209 CODING_SYSTEM_EOL_CRLF (XCODING_SYSTEM (codesys))
210 #define XCODING_SYSTEM_EOL_CR(codesys) \
211 CODING_SYSTEM_EOL_CR (XCODING_SYSTEM (codesys))
214 #define XCODING_SYSTEM_ISO2022_INITIAL_CHARSET(codesys, g) \
215 CODING_SYSTEM_ISO2022_INITIAL_CHARSET (XCODING_SYSTEM (codesys), g)
216 #define XCODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT(codesys, g) \
217 CODING_SYSTEM_ISO2022_FORCE_CHARSET_ON_OUTPUT (XCODING_SYSTEM (codesys), g)
218 #define XCODING_SYSTEM_ISO2022_SHORT(codesys) \
219 CODING_SYSTEM_ISO2022_SHORT (XCODING_SYSTEM (codesys))
220 #define XCODING_SYSTEM_ISO2022_NO_ASCII_EOL(codesys) \
221 CODING_SYSTEM_ISO2022_NO_ASCII_EOL (XCODING_SYSTEM (codesys))
222 #define XCODING_SYSTEM_ISO2022_NO_ASCII_CNTL(codesys) \
223 CODING_SYSTEM_ISO2022_NO_ASCII_CNTL (XCODING_SYSTEM (codesys))
224 #define XCODING_SYSTEM_ISO2022_SEVEN(codesys) \
225 CODING_SYSTEM_ISO2022_SEVEN (XCODING_SYSTEM (codesys))
226 #define XCODING_SYSTEM_ISO2022_LOCK_SHIFT(codesys) \
227 CODING_SYSTEM_ISO2022_LOCK_SHIFT (XCODING_SYSTEM (codesys))
228 #define XCODING_SYSTEM_ISO2022_NO_ISO6429(codesys) \
229 CODING_SYSTEM_ISO2022_NO_ISO6429 (XCODING_SYSTEM (codesys))
230 #define XCODING_SYSTEM_ISO2022_ESCAPE_QUOTED(codesys) \
231 CODING_SYSTEM_ISO2022_ESCAPE_QUOTED (XCODING_SYSTEM (codesys))
232 #define XCODING_SYSTEM_CCL_DECODE(codesys) \
233 CODING_SYSTEM_CCL_DECODE (XCODING_SYSTEM (codesys))
234 #define XCODING_SYSTEM_CCL_ENCODE(codesys) \
235 CODING_SYSTEM_CCL_ENCODE (XCODING_SYSTEM (codesys))
238 #define XCODING_SYSTEM_DISABLE_COMPOSITION(codesys) \
239 CODING_SYSTEM_DISABLE_COMPOSITION (XCODING_SYSTEM (codesys))
242 EXFUN (Fcoding_category_list, 0);
243 EXFUN (Fcoding_category_system, 1);
244 EXFUN (Fcoding_priority_list, 0);
245 EXFUN (Fcoding_system_charset, 2);
246 EXFUN (Fcoding_system_doc_string, 1);
247 EXFUN (Fcoding_system_list, 0);
248 EXFUN (Fcoding_system_name, 1);
249 EXFUN (Fcoding_system_p, 1);
250 EXFUN (Fcoding_system_property, 2);
251 EXFUN (Fcoding_system_type, 1);
252 EXFUN (Fcopy_coding_system, 2);
253 EXFUN (Fdecode_big5_char, 1);
254 EXFUN (Fdecode_coding_region, 4);
255 EXFUN (Fdecode_shift_jis_char, 1);
256 EXFUN (Fdetect_coding_region, 3);
257 EXFUN (Fencode_big5_char, 1);
258 EXFUN (Fencode_coding_region, 4);
259 EXFUN (Fencode_shift_jis_char, 1);
260 EXFUN (Ffind_coding_system, 1);
261 EXFUN (Fget_coding_system, 1);
262 EXFUN (Fmake_coding_system, 4);
263 EXFUN (Fset_coding_category_system, 2);
264 EXFUN (Fset_coding_priority_list, 1);
265 EXFUN (Fsubsidiary_coding_system, 2);
267 extern Lisp_Object Qucs4, Qutf8;
268 extern Lisp_Object Qbig5, Qccl, Qcharset_g0;
269 extern Lisp_Object Qcharset_g1, Qcharset_g2, Qcharset_g3, Qcoding_system_error;
270 extern Lisp_Object Qcoding_systemp, Qcr, Qcrlf, Qdecode, Qencode;
271 extern Lisp_Object Qeol_cr, Qeol_crlf, Qeol_lf, Qeol_type, Qescape_quoted;
272 extern Lisp_Object Qforce_g0_on_output, Qforce_g1_on_output;
273 extern Lisp_Object Qforce_g2_on_output, Qforce_g3_on_output;
274 extern Lisp_Object Qinput_charset_conversion, Qiso2022, Qlf, Qlock_shift;
275 extern Lisp_Object Qmnemonic, Qno_ascii_cntl, Qno_ascii_eol, Qno_conversion;
276 extern Lisp_Object Qraw_text;
277 extern Lisp_Object Qno_iso6429, Qoutput_charset_conversion;
278 extern Lisp_Object Qpost_read_conversion, Qpre_write_conversion, Qseven;
279 extern Lisp_Object Qshift_jis, Qshort, Vcoding_system_for_read;
280 extern Lisp_Object Vcoding_system_for_write, Vcoding_system_hash_table;
281 extern Lisp_Object Vfile_name_coding_system, Vkeyboard_coding_system;
282 extern Lisp_Object Vterminal_coding_system;
284 /* Flags indicating current state while converting code. */
286 /* Used by everyone. */
288 #define CODING_STATE_END (1 << 0) /* If set, this is the last chunk of
289 data being processed. When this
290 is finished, output any necessary
291 terminating control characters,
292 escape sequences, etc. */
293 #define CODING_STATE_CR (1 << 1) /* If set, we just saw a CR. */
296 /* Used by Big 5 on output. */
298 #define CODING_STATE_BIG5_1 (1 << 2) /* If set, we just encountered
299 LEADING_BYTE_BIG5_1. */
300 #define CODING_STATE_BIG5_2 (1 << 3) /* If set, we just encountered
301 LEADING_BYTE_BIG5_2. */
304 /* Used by ISO2022 on input and output. */
306 #define CODING_STATE_R2L (1 << 4) /* If set, the current
307 directionality is right-to-left.
308 Otherwise, it's left-to-right. */
311 /* Used by ISO2022 on input. */
313 #define CODING_STATE_ESCAPE (1 << 5) /* If set, we're currently parsing
314 an escape sequence and the upper
315 16 bits should be looked at to
316 indicate what partial escape
317 sequence we've seen so far.
318 Otherwise, we're running
319 through actual text. */
320 #define CODING_STATE_SS2 (1 << 6) /* If set, G2 is invoked into GL, but
321 only for the next character. */
322 #define CODING_STATE_SS3 (1 << 7) /* If set, G3 is invoked into GL,
323 but only for the next character.
324 If both CODING_STATE_SS2 and
325 CODING_STATE_SS3 are set,
326 CODING_STATE_SS2 overrides; but
327 this probably indicates an error
328 in the text encoding. */
329 #ifdef ENABLE_COMPOSITE_CHARS
330 #define CODING_STATE_COMPOSITE (1 << 8) /* If set, we're currently processing
331 a composite character (i.e. a
332 character constructed by
333 overstriking two or more
335 #endif /* ENABLE_COMPOSITE_CHARS */
338 /* CODING_STATE_ISO2022_LOCK is the mask of flags that remain on until
339 explicitly turned off when in the ISO2022 encoder/decoder. Other flags are
340 turned off at the end of processing each character or escape sequence. */
341 #ifdef ENABLE_COMPOSITE_CHARS
342 # define CODING_STATE_ISO2022_LOCK \
343 (CODING_STATE_END | CODING_STATE_COMPOSITE | CODING_STATE_R2L)
345 # define CODING_STATE_ISO2022_LOCK (CODING_STATE_END | CODING_STATE_R2L)
348 #define CODING_STATE_BIG5_LOCK CODING_STATE_END
350 /* Flags indicating what we've seen so far when parsing an
351 ISO2022 escape sequence. */
354 /* Partial sequences */
355 ISO_ESC_NOTHING, /* Nothing has been seen. */
356 ISO_ESC, /* We've seen ESC. */
357 ISO_ESC_2_4, /* We've seen ESC $. This indicates
358 that we're designating a multi-byte, rather
359 than a single-byte, character set. */
360 ISO_ESC_2_8, /* We've seen ESC 0x28, i.e. ESC (.
361 This means designate a 94-character
362 character set into G0. */
363 ISO_ESC_2_9, /* We've seen ESC 0x29 -- designate a
364 94-character character set into G1. */
365 ISO_ESC_2_10, /* We've seen ESC 0x2A. */
366 ISO_ESC_2_11, /* We've seen ESC 0x2B. */
367 ISO_ESC_2_12, /* We've seen ESC 0x2C -- designate a
368 96-character character set into G0.
369 (This is not ISO2022-standard.
370 The following 96-character
371 control sequences are standard,
373 ISO_ESC_2_13, /* We've seen ESC 0x2D -- designate a
374 96-character character set into G1.
376 ISO_ESC_2_14, /* We've seen ESC 0x2E. */
377 ISO_ESC_2_15, /* We've seen ESC 0x2F. */
378 ISO_ESC_2_4_8, /* We've seen ESC $ 0x28 -- designate
379 a 94^N character set into G0. */
380 ISO_ESC_2_4_9, /* We've seen ESC $ 0x29. */
381 ISO_ESC_2_4_10, /* We've seen ESC $ 0x2A. */
382 ISO_ESC_2_4_11, /* We've seen ESC $ 0x2B. */
383 ISO_ESC_2_4_12, /* We've seen ESC $ 0x2C. */
384 ISO_ESC_2_4_13, /* We've seen ESC $ 0x2D. */
385 ISO_ESC_2_4_14, /* We've seen ESC $ 0x2E. */
386 ISO_ESC_2_4_15, /* We've seen ESC $ 0x2F. */
387 ISO_ESC_5_11, /* We've seen ESC [ or 0x9B. This
388 starts a directionality-control
389 sequence. The next character
390 must be 0, 1, 2, or ]. */
391 ISO_ESC_5_11_0, /* We've seen 0x9B 0. The next character must be ]. */
392 ISO_ESC_5_11_1, /* We've seen 0x9B 1. The next character must be ]. */
393 ISO_ESC_5_11_2, /* We've seen 0x9B 2. The next character must be ]. */
395 /* Full sequences. */
396 #ifdef ENABLE_COMPOSITE_CHARS
397 ISO_ESC_START_COMPOSITE, /* Private usage for START COMPOSING */
398 ISO_ESC_END_COMPOSITE, /* Private usage for END COMPOSING */
399 #endif /* ENABLE_COMPOSITE_CHARS */
400 ISO_ESC_SINGLE_SHIFT, /* We've seen a complete single-shift sequence. */
401 ISO_ESC_LOCKING_SHIFT,/* We've seen a complete locking-shift sequence. */
402 ISO_ESC_DESIGNATE, /* We've seen a complete designation sequence. */
403 ISO_ESC_DIRECTIONALITY,/* We've seen a complete ISO6429 directionality
405 ISO_ESC_LITERAL /* We've seen a literal character ala
409 /* Macros to define code of control characters for ISO2022's functions. */
410 /* code */ /* function */
411 #define ISO_CODE_LF 0x0A /* line-feed */
412 #define ISO_CODE_CR 0x0D /* carriage-return */
413 #define ISO_CODE_SO 0x0E /* shift-out */
414 #define ISO_CODE_SI 0x0F /* shift-in */
415 #define ISO_CODE_ESC 0x1B /* escape */
416 #define ISO_CODE_DEL 0x7F /* delete */
417 #define ISO_CODE_SS2 0x8E /* single-shift-2 */
418 #define ISO_CODE_SS3 0x8F /* single-shift-3 */
419 #define ISO_CODE_CSI 0x9B /* control-sequence-introduce */
422 /* Distinguishable categories of encodings.
424 This list determines the initial priority of the categories.
426 For better or worse, currently Mule files are encoded in 7-bit ISO 2022.
427 For this reason, under Mule ISO_7 gets highest priority.
429 Putting NO_CONVERSION second prevents "binary corruption" in the
430 default case in all but the (presumably) extremely rare case of a
431 binary file which contains redundant escape sequences but no 8-bit
434 The remaining priorities are based on perceived "internationalization
435 political correctness." An exception is UCS-4 at the bottom, since
436 basically everything is compatible with UCS-4, but it is likely to
437 be very rare as an external encoding. */
439 enum coding_category_type
441 /* must be a contiguous range of values 0 -- CODING_CATEGORY_LAST - 1 */
443 CODING_CATEGORY_ISO_7, /* ISO2022 system using only seven-bit bytes,
445 CODING_CATEGORY_NO_CONVERSION,
446 CODING_CATEGORY_UTF8,
447 CODING_CATEGORY_ISO_8_1, /* ISO2022 system using eight-bit bytes,
448 no locking shift, no designation sequences,
449 one-dimension characters in the upper half. */
450 CODING_CATEGORY_ISO_8_2, /* ISO2022 system using eight-bit bytes,
451 no locking shift, no designation sequences,
452 two-dimension characters in the upper half. */
453 CODING_CATEGORY_ISO_8_DESIGNATE, /* ISO2022 system using eight-bit bytes,
454 no locking shift, no single shift,
455 using designation to switch charsets */
456 CODING_CATEGORY_ISO_LOCK_SHIFT, /* ISO2022 system using locking shift */
457 CODING_CATEGORY_SHIFT_JIS,
458 CODING_CATEGORY_BIG5,
459 CODING_CATEGORY_UCS4,
461 CODING_CATEGORY_NO_CONVERSION,
463 CODING_CATEGORY_LAST /* not a real coding category */
467 #define CODING_CATEGORY_SHIFT_JIS_MASK \
468 (1 << CODING_CATEGORY_SHIFT_JIS)
469 #define CODING_CATEGORY_ISO_7_MASK \
470 (1 << CODING_CATEGORY_ISO_7)
471 #define CODING_CATEGORY_ISO_8_DESIGNATE_MASK \
472 (1 << CODING_CATEGORY_ISO_8_DESIGNATE)
473 #define CODING_CATEGORY_ISO_8_1_MASK \
474 (1 << CODING_CATEGORY_ISO_8_1)
475 #define CODING_CATEGORY_ISO_8_2_MASK \
476 (1 << CODING_CATEGORY_ISO_8_2)
477 #define CODING_CATEGORY_ISO_LOCK_SHIFT_MASK \
478 (1 << CODING_CATEGORY_ISO_LOCK_SHIFT)
479 #define CODING_CATEGORY_BIG5_MASK \
480 (1 << CODING_CATEGORY_BIG5)
481 #define CODING_CATEGORY_UCS4_MASK \
482 (1 << CODING_CATEGORY_UCS4)
483 #define CODING_CATEGORY_UTF8_MASK \
484 (1 << CODING_CATEGORY_UTF8)
486 #define CODING_CATEGORY_NO_CONVERSION_MASK \
487 (1 << CODING_CATEGORY_NO_CONVERSION)
488 #define CODING_CATEGORY_NOT_FINISHED_MASK \
492 /* Convert shift-JIS code (sj1, sj2) into internal string
493 representation (c1, c2). (The leading byte is assumed.) */
495 #define DECODE_SJIS(sj1, sj2, c1, c2) \
497 int I1 = sj1, I2 = sj2; \
499 c1 = (I1 << 1) - ((I1 >= 0xe0) ? 0xe0 : 0x60), \
502 c1 = (I1 << 1) - ((I1 >= 0xe0) ? 0xe1 : 0x61), \
503 c2 = I2 + ((I2 >= 0x7f) ? 0x60 : 0x61); \
506 /* Convert the internal string representation of a Shift-JIS character
507 (c1, c2) into Shift-JIS code (sj1, sj2). The leading byte is
510 #define ENCODE_SJIS(c1, c2, sj1, sj2) \
512 int I1 = c1, I2 = c2; \
514 sj1 = (I1 >> 1) + ((I1 < 0xdf) ? 0x31 : 0x71), \
515 sj2 = I2 - ((I2 >= 0xe0) ? 0x60 : 0x61); \
517 sj1 = (I1 >> 1) + ((I1 < 0xdf) ? 0x30 : 0x70), \
522 Lisp_Object make_decoding_input_stream (Lstream *stream,
523 Lisp_Object codesys);
524 Lisp_Object make_encoding_input_stream (Lstream *stream,
525 Lisp_Object codesys);
526 Lisp_Object make_decoding_output_stream (Lstream *stream,
527 Lisp_Object codesys);
528 Lisp_Object make_encoding_output_stream (Lstream *stream,
529 Lisp_Object codesys);
530 Lisp_Object decoding_stream_coding_system (Lstream *stream);
531 Lisp_Object encoding_stream_coding_system (Lstream *stream);
532 void set_decoding_stream_coding_system (Lstream *stream,
533 Lisp_Object codesys);
534 void set_encoding_stream_coding_system (Lstream *stream,
535 Lisp_Object codesys);
536 void determine_real_coding_system (Lstream *stream, Lisp_Object *codesys_in_out,
537 eol_type_t *eol_type_in_out);
541 #define MIN_LEADING_BYTE 0x80
542 /* These need special treatment in a string and/or character */
543 #ifdef ENABLE_COMPOSITE_CHARS
544 #define LEADING_BYTE_COMPOSITE 0x80 /* for a composite character */
546 #define LEADING_BYTE_CONTROL_1 0x8F /* represent normal 80-9F */
547 #define LEADING_BYTE_LATIN_ISO8859_1 0x81 /* Right half of ISO 8859-1 */
548 #define BYTE_C1_P(c) ((unsigned int) ((unsigned int) (c) - 0x80) < 0x20)
549 #define BUFBYTE_FIRST_BYTE_P(c) ((c) < 0xA0)
550 #define BUFBYTE_LEADING_BYTE_P(c) BYTE_C1_P (c)
551 #endif /* not MULE */
553 #endif /* INCLUDED_file_coding_h_ */