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1 | /* CCL (Code Conversion Language) interpreter. |
2 | Ver.1.0 | |
4ed46869 KH |
3 | Copyright (C) 1995 Free Software Foundation, Inc. |
4 | Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. | |
5 | ||
369314dc KH |
6 | This file is part of GNU Emacs. |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
4ed46869 | 12 | |
369314dc KH |
13 | GNU Emacs is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
4ed46869 | 17 | |
369314dc KH |
18 | You should have received a copy of the GNU General Public License |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
4ed46869 KH |
22 | |
23 | #include <stdio.h> | |
24 | ||
25 | #ifdef emacs | |
26 | ||
27 | #include <config.h> | |
28 | #include "lisp.h" | |
29 | #include "charset.h" | |
30 | #include "ccl.h" | |
31 | #include "coding.h" | |
32 | ||
33 | #else /* not emacs */ | |
34 | ||
35 | #include "mulelib.h" | |
36 | ||
37 | #endif /* not emacs */ | |
38 | ||
39 | /* Alist of fontname patterns vs corresponding CCL program. */ | |
40 | Lisp_Object Vfont_ccl_encoder_alist; | |
41 | ||
42 | /* Vector of CCL program names vs corresponding program data. */ | |
43 | Lisp_Object Vccl_program_table; | |
44 | ||
45 | /* CCL (Code Conversion Language) is a simple language which has | |
46 | operations on one input buffer, one output buffer, and 7 registers. | |
47 | The syntax of CCL is described in `ccl.el'. Emacs Lisp function | |
48 | `ccl-compile' compiles a CCL program and produces a CCL code which | |
49 | is a vector of integers. The structure of this vector is as | |
50 | follows: The 1st element: buffer-magnification, a factor for the | |
51 | size of output buffer compared with the size of input buffer. The | |
52 | 2nd element: address of CCL code to be executed when encountered | |
53 | with end of input stream. The 3rd and the remaining elements: CCL | |
54 | codes. */ | |
55 | ||
56 | /* Header of CCL compiled code */ | |
57 | #define CCL_HEADER_BUF_MAG 0 | |
58 | #define CCL_HEADER_EOF 1 | |
59 | #define CCL_HEADER_MAIN 2 | |
60 | ||
61 | /* CCL code is a sequence of 28-bit non-negative integers (i.e. the | |
62 | MSB is always 0), each contains CCL command and/or arguments in the | |
63 | following format: | |
64 | ||
65 | |----------------- integer (28-bit) ------------------| | |
66 | |------- 17-bit ------|- 3-bit --|- 3-bit --|- 5-bit -| | |
67 | |--constant argument--|-register-|-register-|-command-| | |
68 | ccccccccccccccccc RRR rrr XXXXX | |
69 | or | |
70 | |------- relative address -------|-register-|-command-| | |
71 | cccccccccccccccccccc rrr XXXXX | |
72 | or | |
73 | |------------- constant or other args ----------------| | |
74 | cccccccccccccccccccccccccccc | |
75 | ||
76 | where, `cc...c' is a non-negative integer indicating constant value | |
77 | (the left most `c' is always 0) or an absolute jump address, `RRR' | |
78 | and `rrr' are CCL register number, `XXXXX' is one of the following | |
79 | CCL commands. */ | |
80 | ||
81 | /* CCL commands | |
82 | ||
83 | Each comment fields shows one or more lines for command syntax and | |
84 | the following lines for semantics of the command. In semantics, IC | |
85 | stands for Instruction Counter. */ | |
86 | ||
87 | #define CCL_SetRegister 0x00 /* Set register a register value: | |
88 | 1:00000000000000000RRRrrrXXXXX | |
89 | ------------------------------ | |
90 | reg[rrr] = reg[RRR]; | |
91 | */ | |
92 | ||
93 | #define CCL_SetShortConst 0x01 /* Set register a short constant value: | |
94 | 1:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
95 | ------------------------------ | |
96 | reg[rrr] = CCCCCCCCCCCCCCCCCCC; | |
97 | */ | |
98 | ||
99 | #define CCL_SetConst 0x02 /* Set register a constant value: | |
100 | 1:00000000000000000000rrrXXXXX | |
101 | 2:CONSTANT | |
102 | ------------------------------ | |
103 | reg[rrr] = CONSTANT; | |
104 | IC++; | |
105 | */ | |
106 | ||
107 | #define CCL_SetArray 0x03 /* Set register an element of array: | |
108 | 1:CCCCCCCCCCCCCCCCCRRRrrrXXXXX | |
109 | 2:ELEMENT[0] | |
110 | 3:ELEMENT[1] | |
111 | ... | |
112 | ------------------------------ | |
113 | if (0 <= reg[RRR] < CC..C) | |
114 | reg[rrr] = ELEMENT[reg[RRR]]; | |
115 | IC += CC..C; | |
116 | */ | |
117 | ||
118 | #define CCL_Jump 0x04 /* Jump: | |
119 | 1:A--D--D--R--E--S--S-000XXXXX | |
120 | ------------------------------ | |
121 | IC += ADDRESS; | |
122 | */ | |
123 | ||
124 | /* Note: If CC..C is greater than 0, the second code is omitted. */ | |
125 | ||
126 | #define CCL_JumpCond 0x05 /* Jump conditional: | |
127 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
128 | ------------------------------ | |
129 | if (!reg[rrr]) | |
130 | IC += ADDRESS; | |
131 | */ | |
132 | ||
133 | ||
134 | #define CCL_WriteRegisterJump 0x06 /* Write register and jump: | |
135 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
136 | ------------------------------ | |
137 | write (reg[rrr]); | |
138 | IC += ADDRESS; | |
139 | */ | |
140 | ||
141 | #define CCL_WriteRegisterReadJump 0x07 /* Write register, read, and jump: | |
142 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
143 | 2:A--D--D--R--E--S--S-rrrYYYYY | |
144 | ----------------------------- | |
145 | write (reg[rrr]); | |
146 | IC++; | |
147 | read (reg[rrr]); | |
148 | IC += ADDRESS; | |
149 | */ | |
150 | /* Note: If read is suspended, the resumed execution starts from the | |
151 | second code (YYYYY == CCL_ReadJump). */ | |
152 | ||
153 | #define CCL_WriteConstJump 0x08 /* Write constant and jump: | |
154 | 1:A--D--D--R--E--S--S-000XXXXX | |
155 | 2:CONST | |
156 | ------------------------------ | |
157 | write (CONST); | |
158 | IC += ADDRESS; | |
159 | */ | |
160 | ||
161 | #define CCL_WriteConstReadJump 0x09 /* Write constant, read, and jump: | |
162 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
163 | 2:CONST | |
164 | 3:A--D--D--R--E--S--S-rrrYYYYY | |
165 | ----------------------------- | |
166 | write (CONST); | |
167 | IC += 2; | |
168 | read (reg[rrr]); | |
169 | IC += ADDRESS; | |
170 | */ | |
171 | /* Note: If read is suspended, the resumed execution starts from the | |
172 | second code (YYYYY == CCL_ReadJump). */ | |
173 | ||
174 | #define CCL_WriteStringJump 0x0A /* Write string and jump: | |
175 | 1:A--D--D--R--E--S--S-000XXXXX | |
176 | 2:LENGTH | |
177 | 3:0000STRIN[0]STRIN[1]STRIN[2] | |
178 | ... | |
179 | ------------------------------ | |
180 | write_string (STRING, LENGTH); | |
181 | IC += ADDRESS; | |
182 | */ | |
183 | ||
184 | #define CCL_WriteArrayReadJump 0x0B /* Write an array element, read, and jump: | |
185 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
186 | 2:LENGTH | |
187 | 3:ELEMENET[0] | |
188 | 4:ELEMENET[1] | |
189 | ... | |
190 | N:A--D--D--R--E--S--S-rrrYYYYY | |
191 | ------------------------------ | |
192 | if (0 <= reg[rrr] < LENGTH) | |
193 | write (ELEMENT[reg[rrr]]); | |
194 | IC += LENGTH + 2; (... pointing at N+1) | |
195 | read (reg[rrr]); | |
196 | IC += ADDRESS; | |
197 | */ | |
198 | /* Note: If read is suspended, the resumed execution starts from the | |
887bfbd7 | 199 | Nth code (YYYYY == CCL_ReadJump). */ |
4ed46869 KH |
200 | |
201 | #define CCL_ReadJump 0x0C /* Read and jump: | |
202 | 1:A--D--D--R--E--S--S-rrrYYYYY | |
203 | ----------------------------- | |
204 | read (reg[rrr]); | |
205 | IC += ADDRESS; | |
206 | */ | |
207 | ||
208 | #define CCL_Branch 0x0D /* Jump by branch table: | |
209 | 1:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
210 | 2:A--D--D--R--E-S-S[0]000XXXXX | |
211 | 3:A--D--D--R--E-S-S[1]000XXXXX | |
212 | ... | |
213 | ------------------------------ | |
214 | if (0 <= reg[rrr] < CC..C) | |
215 | IC += ADDRESS[reg[rrr]]; | |
216 | else | |
217 | IC += ADDRESS[CC..C]; | |
218 | */ | |
219 | ||
220 | #define CCL_ReadRegister 0x0E /* Read bytes into registers: | |
221 | 1:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
222 | 2:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
223 | ... | |
224 | ------------------------------ | |
225 | while (CCC--) | |
226 | read (reg[rrr]); | |
227 | */ | |
228 | ||
229 | #define CCL_WriteExprConst 0x0F /* write result of expression: | |
230 | 1:00000OPERATION000RRR000XXXXX | |
231 | 2:CONSTANT | |
232 | ------------------------------ | |
233 | write (reg[RRR] OPERATION CONSTANT); | |
234 | IC++; | |
235 | */ | |
236 | ||
237 | /* Note: If the Nth read is suspended, the resumed execution starts | |
238 | from the Nth code. */ | |
239 | ||
240 | #define CCL_ReadBranch 0x10 /* Read one byte into a register, | |
241 | and jump by branch table: | |
242 | 1:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
243 | 2:A--D--D--R--E-S-S[0]000XXXXX | |
244 | 3:A--D--D--R--E-S-S[1]000XXXXX | |
245 | ... | |
246 | ------------------------------ | |
247 | read (read[rrr]); | |
248 | if (0 <= reg[rrr] < CC..C) | |
249 | IC += ADDRESS[reg[rrr]]; | |
250 | else | |
251 | IC += ADDRESS[CC..C]; | |
252 | */ | |
253 | ||
254 | #define CCL_WriteRegister 0x11 /* Write registers: | |
255 | 1:CCCCCCCCCCCCCCCCCCCrrrXXXXX | |
256 | 2:CCCCCCCCCCCCCCCCCCCrrrXXXXX | |
257 | ... | |
258 | ------------------------------ | |
259 | while (CCC--) | |
260 | write (reg[rrr]); | |
261 | ... | |
262 | */ | |
263 | ||
264 | /* Note: If the Nth write is suspended, the resumed execution | |
265 | starts from the Nth code. */ | |
266 | ||
267 | #define CCL_WriteExprRegister 0x12 /* Write result of expression | |
268 | 1:00000OPERATIONRrrRRR000XXXXX | |
269 | ------------------------------ | |
270 | write (reg[RRR] OPERATION reg[Rrr]); | |
271 | */ | |
272 | ||
273 | #define CCL_Call 0x13 /* Write a constant: | |
274 | 1:CCCCCCCCCCCCCCCCCCCC000XXXXX | |
275 | ------------------------------ | |
276 | call (CC..C) | |
277 | */ | |
278 | ||
279 | #define CCL_WriteConstString 0x14 /* Write a constant or a string: | |
280 | 1:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
281 | [2:0000STRIN[0]STRIN[1]STRIN[2]] | |
282 | [...] | |
283 | ----------------------------- | |
284 | if (!rrr) | |
285 | write (CC..C) | |
286 | else | |
287 | write_string (STRING, CC..C); | |
288 | IC += (CC..C + 2) / 3; | |
289 | */ | |
290 | ||
291 | #define CCL_WriteArray 0x15 /* Write an element of array: | |
292 | 1:CCCCCCCCCCCCCCCCCCCCrrrXXXXX | |
293 | 2:ELEMENT[0] | |
294 | 3:ELEMENT[1] | |
295 | ... | |
296 | ------------------------------ | |
297 | if (0 <= reg[rrr] < CC..C) | |
298 | write (ELEMENT[reg[rrr]]); | |
299 | IC += CC..C; | |
300 | */ | |
301 | ||
302 | #define CCL_End 0x16 /* Terminate: | |
303 | 1:00000000000000000000000XXXXX | |
304 | ------------------------------ | |
305 | terminate (); | |
306 | */ | |
307 | ||
308 | /* The following two codes execute an assignment arithmetic/logical | |
309 | operation. The form of the operation is like REG OP= OPERAND. */ | |
310 | ||
311 | #define CCL_ExprSelfConst 0x17 /* REG OP= constant: | |
312 | 1:00000OPERATION000000rrrXXXXX | |
313 | 2:CONSTANT | |
314 | ------------------------------ | |
315 | reg[rrr] OPERATION= CONSTANT; | |
316 | */ | |
317 | ||
318 | #define CCL_ExprSelfReg 0x18 /* REG1 OP= REG2: | |
319 | 1:00000OPERATION000RRRrrrXXXXX | |
320 | ------------------------------ | |
321 | reg[rrr] OPERATION= reg[RRR]; | |
322 | */ | |
323 | ||
324 | /* The following codes execute an arithmetic/logical operation. The | |
325 | form of the operation is like REG_X = REG_Y OP OPERAND2. */ | |
326 | ||
327 | #define CCL_SetExprConst 0x19 /* REG_X = REG_Y OP constant: | |
328 | 1:00000OPERATION000RRRrrrXXXXX | |
329 | 2:CONSTANT | |
330 | ------------------------------ | |
331 | reg[rrr] = reg[RRR] OPERATION CONSTANT; | |
332 | IC++; | |
333 | */ | |
334 | ||
335 | #define CCL_SetExprReg 0x1A /* REG1 = REG2 OP REG3: | |
336 | 1:00000OPERATIONRrrRRRrrrXXXXX | |
337 | ------------------------------ | |
338 | reg[rrr] = reg[RRR] OPERATION reg[Rrr]; | |
339 | */ | |
340 | ||
341 | #define CCL_JumpCondExprConst 0x1B /* Jump conditional according to | |
342 | an operation on constant: | |
343 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
344 | 2:OPERATION | |
345 | 3:CONSTANT | |
346 | ----------------------------- | |
347 | reg[7] = reg[rrr] OPERATION CONSTANT; | |
348 | if (!(reg[7])) | |
349 | IC += ADDRESS; | |
350 | else | |
351 | IC += 2 | |
352 | */ | |
353 | ||
354 | #define CCL_JumpCondExprReg 0x1C /* Jump conditional according to | |
355 | an operation on register: | |
356 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
357 | 2:OPERATION | |
358 | 3:RRR | |
359 | ----------------------------- | |
360 | reg[7] = reg[rrr] OPERATION reg[RRR]; | |
361 | if (!reg[7]) | |
362 | IC += ADDRESS; | |
363 | else | |
364 | IC += 2; | |
365 | */ | |
366 | ||
367 | #define CCL_ReadJumpCondExprConst 0x1D /* Read and jump conditional according | |
368 | to an operation on constant: | |
369 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
370 | 2:OPERATION | |
371 | 3:CONSTANT | |
372 | ----------------------------- | |
373 | read (reg[rrr]); | |
374 | reg[7] = reg[rrr] OPERATION CONSTANT; | |
375 | if (!reg[7]) | |
376 | IC += ADDRESS; | |
377 | else | |
378 | IC += 2; | |
379 | */ | |
380 | ||
381 | #define CCL_ReadJumpCondExprReg 0x1E /* Read and jump conditional according | |
382 | to an operation on register: | |
383 | 1:A--D--D--R--E--S--S-rrrXXXXX | |
384 | 2:OPERATION | |
385 | 3:RRR | |
386 | ----------------------------- | |
387 | read (reg[rrr]); | |
388 | reg[7] = reg[rrr] OPERATION reg[RRR]; | |
389 | if (!reg[7]) | |
390 | IC += ADDRESS; | |
391 | else | |
392 | IC += 2; | |
393 | */ | |
394 | ||
395 | #define CCL_Extention 0x1F /* Extended CCL code | |
396 | 1:ExtendedCOMMNDRrrRRRrrrXXXXX | |
397 | 2:ARGUEMENT | |
398 | 3:... | |
399 | ------------------------------ | |
400 | extended_command (rrr,RRR,Rrr,ARGS) | |
401 | */ | |
402 | ||
403 | ||
404 | /* CCL arithmetic/logical operators. */ | |
405 | #define CCL_PLUS 0x00 /* X = Y + Z */ | |
406 | #define CCL_MINUS 0x01 /* X = Y - Z */ | |
407 | #define CCL_MUL 0x02 /* X = Y * Z */ | |
408 | #define CCL_DIV 0x03 /* X = Y / Z */ | |
409 | #define CCL_MOD 0x04 /* X = Y % Z */ | |
410 | #define CCL_AND 0x05 /* X = Y & Z */ | |
411 | #define CCL_OR 0x06 /* X = Y | Z */ | |
412 | #define CCL_XOR 0x07 /* X = Y ^ Z */ | |
413 | #define CCL_LSH 0x08 /* X = Y << Z */ | |
414 | #define CCL_RSH 0x09 /* X = Y >> Z */ | |
415 | #define CCL_LSH8 0x0A /* X = (Y << 8) | Z */ | |
416 | #define CCL_RSH8 0x0B /* X = Y >> 8, r[7] = Y & 0xFF */ | |
417 | #define CCL_DIVMOD 0x0C /* X = Y / Z, r[7] = Y % Z */ | |
418 | #define CCL_LS 0x10 /* X = (X < Y) */ | |
419 | #define CCL_GT 0x11 /* X = (X > Y) */ | |
420 | #define CCL_EQ 0x12 /* X = (X == Y) */ | |
421 | #define CCL_LE 0x13 /* X = (X <= Y) */ | |
422 | #define CCL_GE 0x14 /* X = (X >= Y) */ | |
423 | #define CCL_NE 0x15 /* X = (X != Y) */ | |
424 | ||
425 | #define CCL_ENCODE_SJIS 0x16 /* X = HIGHER_BYTE (SJIS (Y, Z)) | |
426 | r[7] = LOWER_BYTE (SJIS (Y, Z) */ | |
427 | #define CCL_DECODE_SJIS 0x17 /* X = HIGHER_BYTE (DE-SJIS (Y, Z)) | |
428 | r[7] = LOWER_BYTE (DE-SJIS (Y, Z)) */ | |
429 | ||
430 | /* Macros for exit status of CCL program. */ | |
431 | #define CCL_STAT_SUCCESS 0 /* Terminated successfully. */ | |
432 | #define CCL_STAT_SUSPEND 1 /* Terminated because of empty input | |
433 | buffer or full output buffer. */ | |
434 | #define CCL_STAT_INVALID_CMD 2 /* Terminated because of invalid | |
435 | command. */ | |
436 | #define CCL_STAT_QUIT 3 /* Terminated because of quit. */ | |
437 | ||
438 | /* Terminate CCL program successfully. */ | |
439 | #define CCL_SUCCESS \ | |
440 | do { \ | |
441 | ccl->status = CCL_STAT_SUCCESS; \ | |
442 | ccl->ic = CCL_HEADER_MAIN; \ | |
443 | goto ccl_finish; \ | |
444 | } while (0) | |
445 | ||
446 | /* Suspend CCL program because of reading from empty input buffer or | |
447 | writing to full output buffer. When this program is resumed, the | |
448 | same I/O command is executed. */ | |
449 | #define CCL_SUSPEND \ | |
450 | do { \ | |
451 | ic--; \ | |
452 | ccl->status = CCL_STAT_SUSPEND; \ | |
453 | goto ccl_finish; \ | |
454 | } while (0) | |
455 | ||
456 | /* Terminate CCL program because of invalid command. Should not occur | |
457 | in the normal case. */ | |
458 | #define CCL_INVALID_CMD \ | |
459 | do { \ | |
460 | ccl->status = CCL_STAT_INVALID_CMD; \ | |
461 | goto ccl_error_handler; \ | |
462 | } while (0) | |
463 | ||
464 | /* Encode one character CH to multibyte form and write to the current | |
887bfbd7 | 465 | output buffer. If CH is less than 256, CH is written as is. */ |
4ed46869 KH |
466 | #define CCL_WRITE_CHAR(ch) \ |
467 | do { \ | |
468 | if (!dst) \ | |
469 | CCL_INVALID_CMD; \ | |
470 | else \ | |
471 | { \ | |
472 | unsigned char work[4], *str; \ | |
473 | int len = CHAR_STRING (ch, work, str); \ | |
474 | if (dst + len <= dst_end) \ | |
475 | { \ | |
476 | bcopy (str, dst, len); \ | |
477 | dst += len; \ | |
478 | } \ | |
479 | else \ | |
480 | CCL_SUSPEND; \ | |
481 | } \ | |
482 | } while (0) | |
483 | ||
484 | /* Write a string at ccl_prog[IC] of length LEN to the current output | |
485 | buffer. */ | |
486 | #define CCL_WRITE_STRING(len) \ | |
487 | do { \ | |
488 | if (!dst) \ | |
489 | CCL_INVALID_CMD; \ | |
490 | else if (dst + len <= dst_end) \ | |
491 | for (i = 0; i < len; i++) \ | |
492 | *dst++ = ((XFASTINT (ccl_prog[ic + (i / 3)])) \ | |
493 | >> ((2 - (i % 3)) * 8)) & 0xFF; \ | |
494 | else \ | |
495 | CCL_SUSPEND; \ | |
496 | } while (0) | |
497 | ||
498 | /* Read one byte from the current input buffer into Rth register. */ | |
499 | #define CCL_READ_CHAR(r) \ | |
500 | do { \ | |
501 | if (!src) \ | |
502 | CCL_INVALID_CMD; \ | |
503 | else if (src < src_end) \ | |
504 | r = *src++; \ | |
505 | else if (ccl->last_block) \ | |
506 | { \ | |
507 | ic = ccl->eof_ic; \ | |
508 | goto ccl_finish; \ | |
509 | } \ | |
510 | else \ | |
511 | CCL_SUSPEND; \ | |
512 | } while (0) | |
513 | ||
514 | ||
515 | /* Execute CCL code on SRC_BYTES length text at SOURCE. The resulting | |
516 | text goes to a place pointed by DESTINATION, the length of which | |
517 | should not exceed DST_BYTES. The bytes actually processed is | |
518 | returned as *CONSUMED. The return value is the length of the | |
519 | resulting text. As a side effect, the contents of CCL registers | |
520 | are updated. If SOURCE or DESTINATION is NULL, only operations on | |
521 | registers are permitted. */ | |
522 | ||
523 | #ifdef CCL_DEBUG | |
524 | #define CCL_DEBUG_BACKTRACE_LEN 256 | |
525 | int ccl_backtrace_table[CCL_BACKTRACE_TABLE]; | |
526 | int ccl_backtrace_idx; | |
527 | #endif | |
528 | ||
529 | struct ccl_prog_stack | |
530 | { | |
531 | int *ccl_prog; /* Pointer to an array of CCL code. */ | |
532 | int ic; /* Instruction Counter. */ | |
533 | }; | |
534 | ||
535 | ccl_driver (ccl, source, destination, src_bytes, dst_bytes, consumed) | |
536 | struct ccl_program *ccl; | |
537 | unsigned char *source, *destination; | |
538 | int src_bytes, dst_bytes; | |
539 | int *consumed; | |
540 | { | |
541 | register int *reg = ccl->reg; | |
542 | register int ic = ccl->ic; | |
543 | register int code, field1, field2; | |
e995085f | 544 | register Lisp_Object *ccl_prog = ccl->prog; |
4ed46869 KH |
545 | unsigned char *src = source, *src_end = src + src_bytes; |
546 | unsigned char *dst = destination, *dst_end = dst + dst_bytes; | |
547 | int jump_address; | |
548 | int i, j, op; | |
549 | int stack_idx = 0; | |
550 | /* For the moment, we only support depth 256 of stack. */ | |
551 | struct ccl_prog_stack ccl_prog_stack_struct[256]; | |
552 | ||
553 | if (ic >= ccl->eof_ic) | |
554 | ic = CCL_HEADER_MAIN; | |
555 | ||
556 | #ifdef CCL_DEBUG | |
557 | ccl_backtrace_idx = 0; | |
558 | #endif | |
559 | ||
560 | for (;;) | |
561 | { | |
562 | #ifdef CCL_DEBUG | |
563 | ccl_backtrace_table[ccl_backtrace_idx++] = ic; | |
564 | if (ccl_backtrace_idx >= CCL_DEBUG_BACKTRACE_LEN) | |
565 | ccl_backtrace_idx = 0; | |
566 | ccl_backtrace_table[ccl_backtrace_idx] = 0; | |
567 | #endif | |
568 | ||
569 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) | |
570 | { | |
571 | /* We can't just signal Qquit, instead break the loop as if | |
572 | the whole data is processed. Don't reset Vquit_flag, it | |
573 | must be handled later at a safer place. */ | |
574 | if (consumed) | |
575 | src = source + src_bytes; | |
576 | ccl->status = CCL_STAT_QUIT; | |
577 | break; | |
578 | } | |
579 | ||
580 | code = XINT (ccl_prog[ic]); ic++; | |
581 | field1 = code >> 8; | |
582 | field2 = (code & 0xFF) >> 5; | |
583 | ||
584 | #define rrr field2 | |
585 | #define RRR (field1 & 7) | |
586 | #define Rrr ((field1 >> 3) & 7) | |
587 | #define ADDR field1 | |
588 | ||
589 | switch (code & 0x1F) | |
590 | { | |
591 | case CCL_SetRegister: /* 00000000000000000RRRrrrXXXXX */ | |
592 | reg[rrr] = reg[RRR]; | |
593 | break; | |
594 | ||
595 | case CCL_SetShortConst: /* CCCCCCCCCCCCCCCCCCCCrrrXXXXX */ | |
596 | reg[rrr] = field1; | |
597 | break; | |
598 | ||
599 | case CCL_SetConst: /* 00000000000000000000rrrXXXXX */ | |
600 | reg[rrr] = XINT (ccl_prog[ic]); | |
601 | ic++; | |
602 | break; | |
603 | ||
604 | case CCL_SetArray: /* CCCCCCCCCCCCCCCCCCCCRRRrrrXXXXX */ | |
605 | i = reg[RRR]; | |
606 | j = field1 >> 3; | |
607 | if ((unsigned int) i < j) | |
608 | reg[rrr] = XINT (ccl_prog[ic + i]); | |
609 | ic += j; | |
610 | break; | |
611 | ||
612 | case CCL_Jump: /* A--D--D--R--E--S--S-000XXXXX */ | |
613 | ic += ADDR; | |
614 | break; | |
615 | ||
616 | case CCL_JumpCond: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
617 | if (!reg[rrr]) | |
618 | ic += ADDR; | |
619 | break; | |
620 | ||
621 | case CCL_WriteRegisterJump: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
622 | i = reg[rrr]; | |
623 | CCL_WRITE_CHAR (i); | |
624 | ic += ADDR; | |
625 | break; | |
626 | ||
627 | case CCL_WriteRegisterReadJump: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
628 | i = reg[rrr]; | |
629 | CCL_WRITE_CHAR (i); | |
630 | ic++; | |
631 | CCL_READ_CHAR (reg[rrr]); | |
632 | ic += ADDR - 1; | |
633 | break; | |
634 | ||
635 | case CCL_WriteConstJump: /* A--D--D--R--E--S--S-000XXXXX */ | |
636 | i = XINT (ccl_prog[ic]); | |
637 | CCL_WRITE_CHAR (i); | |
638 | ic += ADDR; | |
639 | break; | |
640 | ||
641 | case CCL_WriteConstReadJump: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
642 | i = XINT (ccl_prog[ic]); | |
643 | CCL_WRITE_CHAR (i); | |
644 | ic++; | |
645 | CCL_READ_CHAR (reg[rrr]); | |
646 | ic += ADDR - 1; | |
647 | break; | |
648 | ||
649 | case CCL_WriteStringJump: /* A--D--D--R--E--S--S-000XXXXX */ | |
650 | j = XINT (ccl_prog[ic]); | |
651 | ic++; | |
652 | CCL_WRITE_STRING (j); | |
653 | ic += ADDR - 1; | |
654 | break; | |
655 | ||
656 | case CCL_WriteArrayReadJump: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
657 | i = reg[rrr]; | |
887bfbd7 | 658 | j = ccl_prog[ic]; |
4ed46869 KH |
659 | if ((unsigned int) i < j) |
660 | { | |
887bfbd7 | 661 | i = XINT (ccl_prog[ic + 1 + i]); |
4ed46869 KH |
662 | CCL_WRITE_CHAR (i); |
663 | } | |
887bfbd7 | 664 | ic += j + 2; |
4ed46869 KH |
665 | CCL_READ_CHAR (reg[rrr]); |
666 | ic += ADDR - (j + 2); | |
667 | break; | |
668 | ||
669 | case CCL_ReadJump: /* A--D--D--R--E--S--S-rrrYYYYY */ | |
670 | CCL_READ_CHAR (reg[rrr]); | |
671 | ic += ADDR; | |
672 | break; | |
673 | ||
674 | case CCL_ReadBranch: /* CCCCCCCCCCCCCCCCCCCCrrrXXXXX */ | |
675 | CCL_READ_CHAR (reg[rrr]); | |
676 | /* fall through ... */ | |
677 | case CCL_Branch: /* CCCCCCCCCCCCCCCCCCCCrrrXXXXX */ | |
678 | if ((unsigned int) reg[rrr] < field1) | |
679 | ic += XINT (ccl_prog[ic + reg[rrr]]); | |
680 | else | |
681 | ic += XINT (ccl_prog[ic + field1]); | |
682 | break; | |
683 | ||
684 | case CCL_ReadRegister: /* CCCCCCCCCCCCCCCCCCCCrrXXXXX */ | |
685 | while (1) | |
686 | { | |
687 | CCL_READ_CHAR (reg[rrr]); | |
688 | if (!field1) break; | |
689 | code = XINT (ccl_prog[ic]); ic++; | |
690 | field1 = code >> 8; | |
691 | field2 = (code & 0xFF) >> 5; | |
692 | } | |
693 | break; | |
694 | ||
695 | case CCL_WriteExprConst: /* 1:00000OPERATION000RRR000XXXXX */ | |
696 | rrr = 7; | |
697 | i = reg[RRR]; | |
698 | j = XINT (ccl_prog[ic]); | |
699 | op = field1 >> 6; | |
700 | ic++; | |
701 | goto ccl_set_expr; | |
702 | ||
703 | case CCL_WriteRegister: /* CCCCCCCCCCCCCCCCCCCrrrXXXXX */ | |
704 | while (1) | |
705 | { | |
706 | i = reg[rrr]; | |
707 | CCL_WRITE_CHAR (i); | |
708 | if (!field1) break; | |
709 | code = XINT (ccl_prog[ic]); ic++; | |
710 | field1 = code >> 8; | |
711 | field2 = (code & 0xFF) >> 5; | |
712 | } | |
713 | break; | |
714 | ||
715 | case CCL_WriteExprRegister: /* 1:00000OPERATIONRrrRRR000XXXXX */ | |
716 | rrr = 7; | |
717 | i = reg[RRR]; | |
718 | j = reg[Rrr]; | |
719 | op = field1 >> 6; | |
720 | goto ccl_set_expr; | |
721 | ||
722 | case CCL_Call: /* CCCCCCCCCCCCCCCCCCCC000XXXXX */ | |
723 | { | |
724 | Lisp_Object slot; | |
725 | ||
726 | if (stack_idx >= 256 | |
727 | || field1 < 0 | |
728 | || field1 >= XVECTOR (Vccl_program_table)->size | |
729 | || (slot = XVECTOR (Vccl_program_table)->contents[field1], | |
730 | !CONSP (slot)) | |
731 | || !VECTORP (XCONS (slot)->cdr)) | |
732 | { | |
733 | if (stack_idx > 0) | |
734 | { | |
735 | ccl_prog = ccl_prog_stack_struct[0].ccl_prog; | |
736 | ic = ccl_prog_stack_struct[0].ic; | |
737 | } | |
738 | CCL_INVALID_CMD; | |
739 | } | |
740 | ||
741 | ccl_prog_stack_struct[stack_idx].ccl_prog = ccl_prog; | |
742 | ccl_prog_stack_struct[stack_idx].ic = ic; | |
743 | stack_idx++; | |
744 | ccl_prog = XVECTOR (XCONS (slot)->cdr)->contents; | |
745 | ic = CCL_HEADER_MAIN; | |
746 | } | |
747 | break; | |
748 | ||
749 | case CCL_WriteConstString: /* CCCCCCCCCCCCCCCCCCCCrrrXXXXX */ | |
750 | if (!rrr) | |
751 | CCL_WRITE_CHAR (field1); | |
752 | else | |
753 | { | |
754 | CCL_WRITE_STRING (field1); | |
755 | ic += (field1 + 2) / 3; | |
756 | } | |
757 | break; | |
758 | ||
759 | case CCL_WriteArray: /* CCCCCCCCCCCCCCCCCCCCrrrXXXXX */ | |
760 | i = reg[rrr]; | |
761 | if ((unsigned int) i < field1) | |
762 | { | |
763 | j = XINT (ccl_prog[ic + i]); | |
764 | CCL_WRITE_CHAR (j); | |
765 | } | |
766 | ic += field1; | |
767 | break; | |
768 | ||
769 | case CCL_End: /* 0000000000000000000000XXXXX */ | |
770 | if (stack_idx-- > 0) | |
771 | { | |
772 | ccl_prog = ccl_prog_stack_struct[stack_idx].ccl_prog; | |
773 | ic = ccl_prog_stack_struct[stack_idx].ic; | |
774 | break; | |
775 | } | |
776 | CCL_SUCCESS; | |
777 | ||
778 | case CCL_ExprSelfConst: /* 00000OPERATION000000rrrXXXXX */ | |
779 | i = XINT (ccl_prog[ic]); | |
780 | ic++; | |
781 | op = field1 >> 6; | |
782 | goto ccl_expr_self; | |
783 | ||
784 | case CCL_ExprSelfReg: /* 00000OPERATION000RRRrrrXXXXX */ | |
785 | i = reg[RRR]; | |
786 | op = field1 >> 6; | |
787 | ||
788 | ccl_expr_self: | |
789 | switch (op) | |
790 | { | |
791 | case CCL_PLUS: reg[rrr] += i; break; | |
792 | case CCL_MINUS: reg[rrr] -= i; break; | |
793 | case CCL_MUL: reg[rrr] *= i; break; | |
794 | case CCL_DIV: reg[rrr] /= i; break; | |
795 | case CCL_MOD: reg[rrr] %= i; break; | |
796 | case CCL_AND: reg[rrr] &= i; break; | |
797 | case CCL_OR: reg[rrr] |= i; break; | |
798 | case CCL_XOR: reg[rrr] ^= i; break; | |
799 | case CCL_LSH: reg[rrr] <<= i; break; | |
800 | case CCL_RSH: reg[rrr] >>= i; break; | |
801 | case CCL_LSH8: reg[rrr] <<= 8; reg[rrr] |= i; break; | |
802 | case CCL_RSH8: reg[7] = reg[rrr] & 0xFF; reg[rrr] >>= 8; break; | |
803 | case CCL_DIVMOD: reg[7] = reg[rrr] % i; reg[rrr] /= i; break; | |
804 | case CCL_LS: reg[rrr] = reg[rrr] < i; break; | |
805 | case CCL_GT: reg[rrr] = reg[rrr] > i; break; | |
806 | case CCL_EQ: reg[rrr] = reg[rrr] == i; break; | |
807 | case CCL_LE: reg[rrr] = reg[rrr] <= i; break; | |
808 | case CCL_GE: reg[rrr] = reg[rrr] >= i; break; | |
809 | case CCL_NE: reg[rrr] = reg[rrr] != i; break; | |
810 | default: CCL_INVALID_CMD; | |
811 | } | |
812 | break; | |
813 | ||
814 | case CCL_SetExprConst: /* 00000OPERATION000RRRrrrXXXXX */ | |
815 | i = reg[RRR]; | |
816 | j = XINT (ccl_prog[ic]); | |
817 | op = field1 >> 6; | |
818 | jump_address = ++ic; | |
819 | goto ccl_set_expr; | |
820 | ||
821 | case CCL_SetExprReg: /* 00000OPERATIONRrrRRRrrrXXXXX */ | |
822 | i = reg[RRR]; | |
823 | j = reg[Rrr]; | |
824 | op = field1 >> 6; | |
825 | jump_address = ic; | |
826 | goto ccl_set_expr; | |
827 | ||
828 | case CCL_ReadJumpCondExprConst: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
829 | CCL_READ_CHAR (reg[rrr]); | |
830 | case CCL_JumpCondExprConst: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
831 | i = reg[rrr]; | |
832 | op = XINT (ccl_prog[ic]); | |
833 | jump_address = ic++ + ADDR; | |
834 | j = XINT (ccl_prog[ic]); | |
835 | ic++; | |
836 | rrr = 7; | |
837 | goto ccl_set_expr; | |
838 | ||
839 | case CCL_ReadJumpCondExprReg: /* A--D--D--R--E--S--S-rrrXXXXX */ | |
840 | CCL_READ_CHAR (reg[rrr]); | |
841 | case CCL_JumpCondExprReg: | |
842 | i = reg[rrr]; | |
843 | op = XINT (ccl_prog[ic]); | |
844 | jump_address = ic++ + ADDR; | |
845 | j = reg[XINT (ccl_prog[ic])]; | |
846 | ic++; | |
847 | rrr = 7; | |
848 | ||
849 | ccl_set_expr: | |
850 | switch (op) | |
851 | { | |
852 | case CCL_PLUS: reg[rrr] = i + j; break; | |
853 | case CCL_MINUS: reg[rrr] = i - j; break; | |
854 | case CCL_MUL: reg[rrr] = i * j; break; | |
855 | case CCL_DIV: reg[rrr] = i / j; break; | |
856 | case CCL_MOD: reg[rrr] = i % j; break; | |
857 | case CCL_AND: reg[rrr] = i & j; break; | |
858 | case CCL_OR: reg[rrr] = i | j; break; | |
859 | case CCL_XOR: reg[rrr] = i ^ j;; break; | |
860 | case CCL_LSH: reg[rrr] = i << j; break; | |
861 | case CCL_RSH: reg[rrr] = i >> j; break; | |
862 | case CCL_LSH8: reg[rrr] = (i << 8) | j; break; | |
863 | case CCL_RSH8: reg[rrr] = i >> 8; reg[7] = i & 0xFF; break; | |
864 | case CCL_DIVMOD: reg[rrr] = i / j; reg[7] = i % j; break; | |
865 | case CCL_LS: reg[rrr] = i < j; break; | |
866 | case CCL_GT: reg[rrr] = i > j; break; | |
867 | case CCL_EQ: reg[rrr] = i == j; break; | |
868 | case CCL_LE: reg[rrr] = i <= j; break; | |
869 | case CCL_GE: reg[rrr] = i >= j; break; | |
870 | case CCL_NE: reg[rrr] = i != j; break; | |
871 | case CCL_ENCODE_SJIS: ENCODE_SJIS (i, j, reg[rrr], reg[7]); break; | |
872 | case CCL_DECODE_SJIS: DECODE_SJIS (i, j, reg[rrr], reg[7]); break; | |
873 | default: CCL_INVALID_CMD; | |
874 | } | |
875 | code &= 0x1F; | |
876 | if (code == CCL_WriteExprConst || code == CCL_WriteExprRegister) | |
877 | { | |
878 | i = reg[rrr]; | |
879 | CCL_WRITE_CHAR (i); | |
880 | } | |
881 | else if (!reg[rrr]) | |
882 | ic = jump_address; | |
883 | break; | |
884 | ||
885 | default: | |
886 | CCL_INVALID_CMD; | |
887 | } | |
888 | } | |
889 | ||
890 | ccl_error_handler: | |
891 | if (destination) | |
892 | { | |
893 | /* We can insert an error message only if DESTINATION is | |
894 | specified and we still have a room to store the message | |
895 | there. */ | |
896 | char msg[256]; | |
897 | int msglen; | |
898 | ||
899 | switch (ccl->status) | |
900 | { | |
901 | case CCL_STAT_INVALID_CMD: | |
902 | sprintf(msg, "\nCCL: Invalid command %x (ccl_code = %x) at %d.", | |
903 | code & 0x1F, code, ic); | |
904 | #ifdef CCL_DEBUG | |
905 | { | |
906 | int i = ccl_backtrace_idx - 1; | |
907 | int j; | |
908 | ||
909 | msglen = strlen (msg); | |
910 | if (dst + msglen <= dst_end) | |
911 | { | |
912 | bcopy (msg, dst, msglen); | |
913 | dst += msglen; | |
914 | } | |
915 | ||
916 | for (j = 0; j < CCL_DEBUG_BACKTRACE_LEN; j++, i--) | |
917 | { | |
918 | if (i < 0) i = CCL_DEBUG_BACKTRACE_LEN - 1; | |
919 | if (ccl_backtrace_table[i] == 0) | |
920 | break; | |
921 | sprintf(msg, " %d", ccl_backtrace_table[i]); | |
922 | msglen = strlen (msg); | |
923 | if (dst + msglen > dst_end) | |
924 | break; | |
925 | bcopy (msg, dst, msglen); | |
926 | dst += msglen; | |
927 | } | |
928 | } | |
4ed46869 | 929 | #endif |
887bfbd7 | 930 | goto ccl_finish; |
4ed46869 KH |
931 | |
932 | case CCL_STAT_QUIT: | |
933 | sprintf(msg, "\nCCL: Quited."); | |
934 | break; | |
935 | ||
936 | default: | |
937 | sprintf(msg, "\nCCL: Unknown error type (%d).", ccl->status); | |
938 | } | |
939 | ||
940 | msglen = strlen (msg); | |
941 | if (dst + msglen <= dst_end) | |
942 | { | |
943 | bcopy (msg, dst, msglen); | |
944 | dst += msglen; | |
945 | } | |
946 | } | |
947 | ||
948 | ccl_finish: | |
949 | ccl->ic = ic; | |
950 | if (consumed) *consumed = src - source; | |
951 | return dst - destination; | |
952 | } | |
953 | ||
954 | /* Setup fields of the structure pointed by CCL appropriately for the | |
955 | execution of compiled CCL code in VEC (vector of integer). */ | |
956 | setup_ccl_program (ccl, vec) | |
957 | struct ccl_program *ccl; | |
958 | Lisp_Object vec; | |
959 | { | |
960 | int i; | |
961 | ||
962 | ccl->size = XVECTOR (vec)->size; | |
963 | ccl->prog = XVECTOR (vec)->contents; | |
964 | ccl->ic = CCL_HEADER_MAIN; | |
965 | ccl->eof_ic = XINT (XVECTOR (vec)->contents[CCL_HEADER_EOF]); | |
966 | ccl->buf_magnification = XINT (XVECTOR (vec)->contents[CCL_HEADER_BUF_MAG]); | |
967 | for (i = 0; i < 8; i++) | |
968 | ccl->reg[i] = 0; | |
969 | ccl->last_block = 0; | |
970 | ccl->status = 0; | |
971 | } | |
972 | ||
973 | #ifdef emacs | |
974 | ||
975 | DEFUN ("ccl-execute", Fccl_execute, Sccl_execute, 2, 2, 0, | |
976 | "Execute CCL-PROGRAM with registers initialized by REGISTERS.\n\ | |
977 | CCL-PROGRAM is a compiled code generated by `ccl-compile',\n\ | |
978 | no I/O commands should appear in the CCL program.\n\ | |
979 | REGISTERS is a vector of [R0 R1 ... R7] where RN is an initial value\n\ | |
980 | of Nth register.\n\ | |
981 | As side effect, each element of REGISTER holds the value of\n\ | |
982 | corresponding register after the execution.") | |
983 | (ccl_prog, reg) | |
984 | Lisp_Object ccl_prog, reg; | |
985 | { | |
986 | struct ccl_program ccl; | |
987 | int i; | |
988 | ||
989 | CHECK_VECTOR (ccl_prog, 0); | |
990 | CHECK_VECTOR (reg, 1); | |
991 | if (XVECTOR (reg)->size != 8) | |
992 | error ("Invalid length of vector REGISTERS"); | |
993 | ||
994 | setup_ccl_program (&ccl, ccl_prog); | |
995 | for (i = 0; i < 8; i++) | |
996 | ccl.reg[i] = (INTEGERP (XVECTOR (reg)->contents[i]) | |
997 | ? XINT (XVECTOR (reg)->contents[i]) | |
998 | : 0); | |
999 | ||
1000 | ccl_driver (&ccl, (char *)0, (char *)0, 0, 0, (int *)0); | |
1001 | QUIT; | |
1002 | if (ccl.status != CCL_STAT_SUCCESS) | |
1003 | error ("Error in CCL program at %dth code", ccl.ic); | |
1004 | ||
1005 | for (i = 0; i < 8; i++) | |
1006 | XSETINT (XVECTOR (reg)->contents[i], ccl.reg[i]); | |
1007 | return Qnil; | |
1008 | } | |
1009 | ||
1010 | DEFUN ("ccl-execute-on-string", Fccl_execute_on_string, Sccl_execute_on_string, | |
cb5373dd | 1011 | 3, 4, 0, |
4ed46869 KH |
1012 | "Execute CCL-PROGRAM with initial STATUS on STRING.\n\ |
1013 | CCL-PROGRAM is a compiled code generated by `ccl-compile'.\n\ | |
1014 | Read buffer is set to STRING, and write buffer is allocated automatically.\n\ | |
1015 | STATUS is a vector of [R0 R1 ... R7 IC], where\n\ | |
1016 | R0..R7 are initial values of corresponding registers,\n\ | |
1017 | IC is the instruction counter specifying from where to start the program.\n\ | |
1018 | If R0..R7 are nil, they are initialized to 0.\n\ | |
1019 | If IC is nil, it is initialized to head of the CCL program.\n\ | |
1020 | Returns the contents of write buffer as a string,\n\ | |
cb5373dd KH |
1021 | and as side effect, STATUS is updated.\n\ |
1022 | If optional 4th arg CONTINUE is non-nil, keep IC on read operation\n\ | |
1023 | when read buffer is exausted, else, IC is always set to the end of\n\ | |
1024 | CCL-PROGRAM on exit.") | |
1025 | (ccl_prog, status, str, contin) | |
1026 | Lisp_Object ccl_prog, status, str, contin; | |
4ed46869 KH |
1027 | { |
1028 | Lisp_Object val; | |
1029 | struct ccl_program ccl; | |
1030 | int i, produced; | |
1031 | int outbufsize; | |
1032 | char *outbuf; | |
1033 | struct gcpro gcpro1, gcpro2, gcpro3; | |
1034 | ||
1035 | CHECK_VECTOR (ccl_prog, 0); | |
1036 | CHECK_VECTOR (status, 1); | |
1037 | if (XVECTOR (status)->size != 9) | |
1038 | error ("Invalid length of vector STATUS"); | |
1039 | CHECK_STRING (str, 2); | |
1040 | GCPRO3 (ccl_prog, status, str); | |
1041 | ||
1042 | setup_ccl_program (&ccl, ccl_prog); | |
1043 | for (i = 0; i < 8; i++) | |
1044 | { | |
1045 | if (NILP (XVECTOR (status)->contents[i])) | |
1046 | XSETINT (XVECTOR (status)->contents[i], 0); | |
1047 | if (INTEGERP (XVECTOR (status)->contents[i])) | |
1048 | ccl.reg[i] = XINT (XVECTOR (status)->contents[i]); | |
1049 | } | |
1050 | if (INTEGERP (XVECTOR (status)->contents[i])) | |
1051 | { | |
1052 | i = XFASTINT (XVECTOR (status)->contents[8]); | |
1053 | if (ccl.ic < i && i < ccl.size) | |
1054 | ccl.ic = i; | |
1055 | } | |
1056 | outbufsize = XSTRING (str)->size * ccl.buf_magnification + 256; | |
1057 | outbuf = (char *) xmalloc (outbufsize); | |
1058 | if (!outbuf) | |
1059 | error ("Not enough memory"); | |
cb5373dd | 1060 | ccl.last_block = NILP (contin); |
4ed46869 KH |
1061 | produced = ccl_driver (&ccl, XSTRING (str)->data, outbuf, |
1062 | XSTRING (str)->size, outbufsize, (int *)0); | |
1063 | for (i = 0; i < 8; i++) | |
1064 | XSET (XVECTOR (status)->contents[i], Lisp_Int, ccl.reg[i]); | |
1065 | XSETINT (XVECTOR (status)->contents[8], ccl.ic); | |
1066 | UNGCPRO; | |
1067 | ||
1068 | val = make_string (outbuf, produced); | |
1069 | free (outbuf); | |
1070 | QUIT; | |
1071 | if (ccl.status != CCL_STAT_SUCCESS | |
1072 | && ccl.status != CCL_STAT_SUSPEND) | |
1073 | error ("Error in CCL program at %dth code", ccl.ic); | |
1074 | ||
1075 | return val; | |
1076 | } | |
1077 | ||
1078 | DEFUN ("register-ccl-program", Fregister_ccl_program, Sregister_ccl_program, | |
1079 | 2, 2, 0, | |
7bce92a6 KH |
1080 | "Register CCL program PROGRAM of NAME in `ccl-program-table'.\n\ |
1081 | PROGRAM should be a compiled code of CCL program, or nil.\n\ | |
4ed46869 KH |
1082 | Return index number of the registered CCL program.") |
1083 | (name, ccl_prog) | |
1084 | Lisp_Object name, ccl_prog; | |
1085 | { | |
1086 | int len = XVECTOR (Vccl_program_table)->size; | |
1087 | int i, idx; | |
1088 | ||
1089 | CHECK_SYMBOL (name, 0); | |
1090 | if (!NILP (ccl_prog)) | |
1091 | CHECK_VECTOR (ccl_prog, 1); | |
1092 | ||
1093 | for (i = 0; i < len; i++) | |
1094 | { | |
1095 | Lisp_Object slot = XVECTOR (Vccl_program_table)->contents[i]; | |
1096 | ||
1097 | if (!CONSP (slot)) | |
1098 | break; | |
1099 | ||
1100 | if (EQ (name, XCONS (slot)->car)) | |
1101 | { | |
1102 | XCONS (slot)->cdr = ccl_prog; | |
1103 | return make_number (i); | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | if (i == len) | |
1108 | { | |
1109 | Lisp_Object new_table = Fmake_vector (len * 2, Qnil); | |
1110 | int j; | |
1111 | ||
1112 | for (j = 0; j < len; j++) | |
1113 | XVECTOR (new_table)->contents[j] | |
1114 | = XVECTOR (Vccl_program_table)->contents[j]; | |
1115 | Vccl_program_table = new_table; | |
1116 | } | |
1117 | ||
1118 | XVECTOR (Vccl_program_table)->contents[i] = Fcons (name, ccl_prog); | |
1119 | return make_number (i); | |
1120 | } | |
1121 | ||
1122 | syms_of_ccl () | |
1123 | { | |
1124 | staticpro (&Vccl_program_table); | |
1125 | Vccl_program_table = Fmake_vector (32, Qnil); | |
1126 | ||
1127 | DEFVAR_LISP ("font-ccl-encoder-alist", &Vfont_ccl_encoder_alist, | |
1128 | "Alist of fontname patterns vs corresponding CCL program.\n\ | |
1129 | Each element looks like (REGEXP . CCL-CODE),\n\ | |
1130 | where CCL-CODE is a compiled CCL program.\n\ | |
1131 | When a font whose name matches REGEXP is used for displaying a character,\n\ | |
1132 | CCL-CODE is executed to calculate the code point in the font\n\ | |
1133 | from the charset number and position code(s) of the character which are set\n\ | |
1134 | in CCL registers R0, R1, and R2 before the execution.\n\ | |
1135 | The code point in the font is set in CCL registers R1 and R2\n\ | |
1136 | when the execution terminated.\n\ | |
1137 | If the font is single-byte font, the register R2 is not used."); | |
1138 | Vfont_ccl_encoder_alist = Qnil; | |
1139 | ||
1140 | defsubr (&Sccl_execute); | |
1141 | defsubr (&Sccl_execute_on_string); | |
1142 | defsubr (&Sregister_ccl_program); | |
1143 | } | |
1144 | ||
1145 | #endif /* emacs */ |