3888436c |
1 | /* |
2 | |
3 | parser.c: Generate helper declarations and functions to trace events |
4 | from an event description file. |
5 | |
6 | Copyright (C) 2002, Xianxiu Yang |
7 | Copyright (C) 2002, Michel Dagenais |
8 | This program 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; version 2 of the License. |
11 | |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
20 | */ |
21 | |
22 | /* This program reads the ".xml" event definitions input files |
23 | and constructs structure for each event. |
24 | |
25 | The program uses a very simple tokenizer, called from a hand written |
26 | recursive descent parser to fill a data structure describing the events. |
27 | The result is a sequence of events definitions which refer to type |
28 | definitions. |
29 | |
30 | A table of named types is maintained to allow refering to types by name |
31 | when the same type is used at several places. Finally a sequence of |
32 | all types is maintained to facilitate the freeing of all type |
33 | information when the processing of an ".xml" file is finished. */ |
34 | |
35 | #include <stdlib.h> |
36 | #include <string.h> |
37 | #include <stdio.h> |
38 | #include <stdarg.h> |
39 | #include <linux/errno.h> |
9774b764 |
40 | #include <assert.h> |
3888436c |
41 | |
42 | |
43 | #include "parser.h" |
44 | |
45 | |
31cbc5d3 |
46 | /* helper function */ |
47 | void strupper(char *string) |
48 | { |
49 | char *ptr = string; |
50 | |
51 | while(*ptr != '\0') { |
52 | *ptr = toupper(*ptr); |
53 | ptr++; |
54 | } |
55 | } |
56 | |
57 | |
58 | int getSizeindex(int value) |
59 | { |
60 | switch(value) { |
61 | case 1: |
62 | return 0; |
63 | case 2: |
64 | return 1; |
65 | case 4: |
66 | return 2; |
67 | case 8: |
68 | return 3; |
69 | default: |
70 | printf("Error : unknown value size %d\n", value); |
71 | exit(-1); |
72 | } |
73 | } |
74 | |
3888436c |
75 | /***************************************************************************** |
76 | *Function name |
77 | * getSize : translate from string to integer |
78 | *Input params |
79 | * in : input file handle |
80 | *Return values |
81 | * size |
82 | *****************************************************************************/ |
83 | |
84 | int getSize(parse_file *in) |
85 | { |
86 | char *token; |
87 | |
88 | token = getToken(in); |
89 | if(in->type == NUMBER) { |
90 | if(strcmp(token,"1") == 0) return 0; |
91 | else if(strcmp(token,"2") == 0) return 1; |
92 | else if(strcmp(token,"4") == 0) return 2; |
93 | else if(strcmp(token,"8") == 0) return 3; |
94 | } |
95 | else if(in->type == NAME) { |
96 | if(strcmp(token,"short") == 0) return 4; |
97 | else if(strcmp(token,"medium") == 0) return 5; |
98 | else if(strcmp(token,"long") == 0) return 6; |
99 | } |
100 | in->error(in,"incorrect size specification"); |
101 | return -1; |
102 | } |
103 | |
104 | /***************************************************************************** |
105 | *Function name |
106 | * error_callback : print out error info |
107 | *Input params |
108 | * in : input file handle |
109 | * msg : message to be printed |
110 | ****************************************************************************/ |
111 | |
112 | void error_callback(parse_file *in, char *msg) |
113 | { |
114 | if(in) |
115 | printf("Error in file %s, line %d: %s\n", in->name, in->lineno, msg); |
116 | else |
117 | printf("%s\n",msg); |
9774b764 |
118 | assert(0); |
3888436c |
119 | exit(1); |
120 | } |
121 | |
122 | /***************************************************************************** |
123 | *Function name |
124 | * memAlloc : allocate memory |
125 | *Input params |
126 | * size : required memory size |
127 | *return value |
128 | * void * : pointer to allocate memory or NULL |
129 | ****************************************************************************/ |
130 | |
131 | void * memAlloc(int size) |
132 | { |
133 | void * addr; |
134 | if(size == 0) return NULL; |
135 | addr = malloc(size); |
136 | if(!addr){ |
137 | printf("Failed to allocate memory"); |
138 | exit(1); |
139 | } |
140 | return addr; |
141 | } |
142 | |
143 | /***************************************************************************** |
144 | *Function name |
145 | * allocAndCopy : allocate memory and initialize it |
146 | *Input params |
147 | * str : string to be put in memory |
148 | *return value |
149 | * char * : pointer to allocate memory or NULL |
150 | ****************************************************************************/ |
151 | |
152 | char *allocAndCopy(char *str) |
153 | { |
154 | char * addr; |
155 | if(str == NULL) return NULL; |
156 | addr = (char *)memAlloc(strlen(str)+1); |
157 | strcpy(addr,str); |
158 | return addr; |
159 | } |
160 | |
161 | /************************************************************************** |
162 | * Function : |
9774b764 |
163 | * getTypeAttributes |
3888436c |
164 | * Description : |
165 | * Read the attribute from the input file. |
166 | * |
167 | * Parameters : |
168 | * in , input file handle. |
9774b764 |
169 | * t , the type descriptor to fill. |
3888436c |
170 | * |
171 | **************************************************************************/ |
172 | |
9774b764 |
173 | void getTypeAttributes(parse_file *in, type_descriptor *t) |
3888436c |
174 | { |
9774b764 |
175 | char * token; |
176 | char car; |
177 | |
178 | t->fmt = NULL; |
179 | t->size = -1; |
180 | t->alignment = 0; |
3888436c |
181 | |
9774b764 |
182 | while(1) { |
183 | token = getToken(in); |
184 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
185 | ungetToken(in); |
186 | break; |
187 | } |
188 | |
189 | if(!strcmp("format",token)) { |
190 | getEqual(in); |
191 | t->fmt = allocAndCopy(getQuotedString(in)); |
192 | //} else if(!strcmp("name",token)) { |
193 | // getEqual(in); |
194 | // car = seekNextChar(in); |
195 | // if(car == EOF) in->error(in,"name was expected"); |
196 | // else if(car == '\"') t->type_name = allocAndCopy(getQuotedString(in)); |
197 | // else t->type_name = allocAndCopy(getName(in)); |
198 | } else if(!strcmp("size",token)) { |
199 | getEqual(in); |
200 | t->size = getSize(in); |
201 | } else if(!strcmp("align",token)) { |
202 | getEqual(in); |
203 | t->alignment = getNumber(in); |
204 | } |
205 | } |
3888436c |
206 | } |
207 | |
9774b764 |
208 | /************************************************************************** |
209 | * Function : |
210 | * getEventAttributes |
211 | * Description : |
212 | * Read the attribute from the input file. |
213 | * |
214 | * Parameters : |
215 | * in , input file handle. |
216 | * ev , the event to fill. |
217 | * |
218 | **************************************************************************/ |
219 | |
220 | void getEventAttributes(parse_file *in, event *ev) |
3888436c |
221 | { |
222 | char * token; |
9774b764 |
223 | char car; |
224 | |
225 | ev->name = NULL; |
3888436c |
226 | |
9774b764 |
227 | while(1) { |
228 | token = getToken(in); |
229 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
230 | ungetToken(in); |
231 | break; |
232 | } |
233 | |
234 | if(!strcmp("name",token)) { |
235 | getEqual(in); |
236 | car = seekNextChar(in); |
237 | if(car == EOF) in->error(in,"name was expected"); |
238 | else if(car == '\"') ev->name = allocAndCopy(getQuotedString(in)); |
239 | else ev->name = allocAndCopy(getName(in)); |
240 | } |
3888436c |
241 | } |
9774b764 |
242 | } |
3888436c |
243 | |
9774b764 |
244 | /************************************************************************** |
245 | * Function : |
246 | * getFacilityAttributes |
247 | * Description : |
248 | * Read the attribute from the input file. |
249 | * |
250 | * Parameters : |
251 | * in , input file handle. |
252 | * fac , the facility to fill. |
253 | * |
254 | **************************************************************************/ |
255 | |
256 | void getFacilityAttributes(parse_file *in, facility *fac) |
257 | { |
258 | char * token; |
259 | char car; |
260 | |
261 | fac->name = NULL; |
262 | |
263 | while(1) { |
264 | token = getToken(in); |
265 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
266 | ungetToken(in); |
267 | break; |
268 | } |
269 | |
270 | if(!strcmp("name",token)) { |
271 | getEqual(in); |
272 | car = seekNextChar(in); |
273 | if(car == EOF) in->error(in,"name was expected"); |
274 | else if(car == '\"') fac->name = allocAndCopy(getQuotedString(in)); |
275 | else fac->name = allocAndCopy(getName(in)); |
276 | } |
277 | } |
3888436c |
278 | } |
279 | |
9774b764 |
280 | /************************************************************************** |
281 | * Function : |
282 | * getFieldAttributes |
283 | * Description : |
284 | * Read the attribute from the input file. |
285 | * |
286 | * Parameters : |
287 | * in , input file handle. |
288 | * f , the field to fill. |
289 | * |
290 | **************************************************************************/ |
291 | |
292 | void getFieldAttributes(parse_file *in, field *f) |
3888436c |
293 | { |
294 | char * token; |
9774b764 |
295 | char car; |
296 | |
297 | f->name = NULL; |
298 | |
299 | while(1) { |
300 | token = getToken(in); |
301 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
302 | ungetToken(in); |
303 | break; |
304 | } |
3888436c |
305 | |
9774b764 |
306 | if(!strcmp("name",token)) { |
307 | getEqual(in); |
308 | car = seekNextChar(in); |
309 | if(car == EOF) in->error(in,"name was expected"); |
310 | else if(car == '\"') f->name = allocAndCopy(getQuotedString(in)); |
311 | else f->name = allocAndCopy(getName(in)); |
312 | } |
313 | } |
3888436c |
314 | } |
315 | |
9774b764 |
316 | char *getNameAttribute(parse_file *in) |
3888436c |
317 | { |
318 | char * token; |
9774b764 |
319 | char *name = NULL; |
320 | char car; |
321 | |
322 | while(1) { |
323 | token = getToken(in); |
324 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
325 | ungetToken(in); |
326 | break; |
327 | } |
328 | |
329 | if(!strcmp("name",token)) { |
330 | getEqual(in); |
331 | car = seekNextChar(in); |
332 | if(car == EOF) in->error(in,"name was expected"); |
333 | else if(car == '\"') name = allocAndCopy(getQuotedString(in)); |
334 | else name = allocAndCopy(getName(in)); |
335 | } |
336 | } |
337 | if(name == NULL) in->error(in, "Name was expected"); |
338 | return name; |
3888436c |
339 | |
3888436c |
340 | } |
341 | |
9774b764 |
342 | |
343 | |
344 | //for <label name=label_name value=n format="..."/>, value is an option |
3888436c |
345 | char * getValueStrAttribute(parse_file *in) |
346 | { |
347 | char * token; |
348 | |
349 | token = getToken(in); |
350 | if(strcmp("/",token) == 0){ |
351 | ungetToken(in); |
352 | return NULL; |
353 | } |
354 | |
355 | if(strcmp("value",token))in->error(in,"value was expected"); |
356 | getEqual(in); |
357 | token = getToken(in); |
358 | if(in->type != NUMBER) in->error(in,"number was expected"); |
359 | return token; |
360 | } |
361 | |
362 | char * getDescription(parse_file *in) |
363 | { |
364 | long int pos; |
365 | char * token, car, *str; |
366 | |
367 | pos = ftell(in->fp); |
368 | |
369 | getLAnglebracket(in); |
370 | token = getName(in); |
371 | if(strcmp("description",token)){ |
372 | fseek(in->fp, pos, SEEK_SET); |
373 | return NULL; |
374 | } |
375 | |
376 | getRAnglebracket(in); |
377 | |
378 | pos = 0; |
379 | while((car = getc(in->fp)) != EOF) { |
380 | if(car == '<') break; |
381 | if(car == '\0') continue; |
382 | in->buffer[pos] = car; |
383 | pos++; |
384 | } |
385 | if(car == EOF)in->error(in,"not a valid description"); |
386 | in->buffer[pos] = '\0'; |
387 | |
388 | str = allocAndCopy(in->buffer); |
389 | |
390 | getForwardslash(in); |
391 | token = getName(in); |
392 | if(strcmp("description", token))in->error(in,"not a valid description"); |
393 | getRAnglebracket(in); |
394 | |
395 | return str; |
396 | } |
397 | |
398 | /***************************************************************************** |
399 | *Function name |
400 | * parseFacility : generate event list |
401 | *Input params |
402 | * in : input file handle |
403 | * fac : empty facility |
404 | *Output params |
405 | * fac : facility filled with event list |
406 | ****************************************************************************/ |
407 | |
408 | void parseFacility(parse_file *in, facility * fac) |
409 | { |
410 | char * token; |
411 | event *ev; |
412 | |
9774b764 |
413 | getFacilityAttributes(in, fac); |
414 | if(fac->name == NULL) in->error(in, "Attribute not named"); |
415 | |
31cbc5d3 |
416 | fac->capname = allocAndCopy(fac->name); |
417 | strupper(fac->capname); |
3888436c |
418 | getRAnglebracket(in); |
419 | |
420 | fac->description = getDescription(in); |
421 | |
422 | while(1){ |
423 | getLAnglebracket(in); |
424 | |
425 | token = getToken(in); |
426 | if(in->type == ENDFILE) |
427 | in->error(in,"the definition of the facility is not finished"); |
428 | |
429 | if(strcmp("event",token) == 0){ |
430 | ev = (event*) memAlloc(sizeof(event)); |
431 | sequence_push(&(fac->events),ev); |
432 | parseEvent(in,ev, &(fac->unnamed_types), &(fac->named_types)); |
433 | }else if(strcmp("type",token) == 0){ |
434 | parseTypeDefinition(in, &(fac->unnamed_types), &(fac->named_types)); |
435 | }else if(in->type == FORWARDSLASH){ |
436 | break; |
437 | }else in->error(in,"event or type token expected\n"); |
438 | } |
439 | |
440 | token = getName(in); |
441 | if(strcmp("facility",token)) in->error(in,"not the end of the facility"); |
442 | getRAnglebracket(in); //</facility> |
443 | } |
444 | |
445 | /***************************************************************************** |
446 | *Function name |
447 | * parseEvent : generate event from event definition |
448 | *Input params |
449 | * in : input file handle |
450 | * ev : new event |
451 | * unnamed_types : array of unamed types |
452 | * named_types : array of named types |
453 | *Output params |
454 | * ev : new event (parameters are passed to it) |
455 | ****************************************************************************/ |
456 | |
457 | void parseEvent(parse_file *in, event * ev, sequence * unnamed_types, |
458 | table * named_types) |
459 | { |
460 | char *token; |
461 | type_descriptor *t; |
462 | |
463 | //<event name=eventtype_name> |
9774b764 |
464 | getEventAttributes(in, ev); |
465 | if(ev->name == NULL) in->error(in, "Event not named"); |
3888436c |
466 | getRAnglebracket(in); |
467 | |
468 | //<description>...</descriptio> |
469 | ev->description = getDescription(in); |
470 | |
471 | //event can have STRUCT, TYPEREF or NOTHING |
472 | getLAnglebracket(in); |
473 | |
474 | token = getToken(in); |
475 | if(in->type == FORWARDSLASH){ //</event> NOTHING |
476 | ev->type = NULL; |
477 | }else if(in->type == NAME){ |
478 | if(strcmp("struct",token)==0 || strcmp("typeref",token)==0){ |
479 | ungetToken(in); |
480 | ev->type = parseType(in,NULL, unnamed_types, named_types); |
481 | if(ev->type->type != STRUCT && ev->type->type != NONE) |
482 | in->error(in,"type must be a struct"); |
483 | }else in->error(in, "not a valid type"); |
484 | |
485 | getLAnglebracket(in); |
486 | getForwardslash(in); |
487 | }else in->error(in,"not a struct type"); |
488 | |
489 | token = getName(in); |
490 | if(strcmp("event",token))in->error(in,"not an event definition"); |
491 | getRAnglebracket(in); //</event> |
492 | } |
493 | |
494 | /***************************************************************************** |
495 | *Function name |
496 | * parseField : get field infomation from buffer |
497 | *Input params |
498 | * in : input file handle |
499 | * t : type descriptor |
500 | * unnamed_types : array of unamed types |
501 | * named_types : array of named types |
502 | ****************************************************************************/ |
503 | |
504 | void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types, |
505 | table * named_types) |
506 | { |
507 | char * token; |
508 | field *f; |
509 | |
510 | f = (field *)memAlloc(sizeof(field)); |
511 | sequence_push(&(t->fields),f); |
512 | |
513 | //<field name=field_name> <description> <type> </field> |
9774b764 |
514 | getFieldAttributes(in, f); |
515 | if(f->name == NULL) in->error(in, "Field not named"); |
3888436c |
516 | getRAnglebracket(in); |
517 | |
518 | f->description = getDescription(in); |
519 | |
520 | //<int size=...> |
521 | getLAnglebracket(in); |
522 | f->type = parseType(in,NULL, unnamed_types, named_types); |
523 | |
524 | getLAnglebracket(in); |
525 | getForwardslash(in); |
526 | token = getName(in); |
527 | if(strcmp("field",token))in->error(in,"not a valid field definition"); |
528 | getRAnglebracket(in); //</field> |
529 | } |
530 | |
531 | |
532 | /***************************************************************************** |
533 | *Function name |
534 | * parseType : get type information, type can be : |
535 | * Primitive: |
536 | * int(size,fmt); uint(size,fmt); float(size,fmt); |
537 | * string(fmt); enum(size,fmt,(label1,label2...)) |
538 | * Compound: |
539 | * array(arraySize, type); sequence(lengthSize,type) |
540 | * struct(field(name,type,description)...) |
541 | * type name: |
542 | * type(name,type) |
543 | *Input params |
544 | * in : input file handle |
545 | * inType : a type descriptor |
546 | * unnamed_types : array of unamed types |
547 | * named_types : array of named types |
548 | *Return values |
549 | * type_descriptor* : a type descriptor |
550 | ****************************************************************************/ |
551 | |
552 | type_descriptor *parseType(parse_file *in, type_descriptor *inType, |
553 | sequence * unnamed_types, table * named_types) |
554 | { |
555 | char *token; |
556 | type_descriptor *t; |
557 | |
558 | if(inType == NULL) { |
559 | t = (type_descriptor *) memAlloc(sizeof(type_descriptor)); |
560 | t->type_name = NULL; |
561 | t->type = NONE; |
562 | t->fmt = NULL; |
563 | sequence_push(unnamed_types,t); |
564 | } |
565 | else t = inType; |
566 | |
567 | token = getName(in); |
568 | |
569 | if(strcmp(token,"struct") == 0) { |
570 | t->type = STRUCT; |
9774b764 |
571 | getTypeAttributes(in, t); |
3888436c |
572 | getRAnglebracket(in); //<struct> |
573 | getLAnglebracket(in); //<field name=..> |
574 | token = getToken(in); |
575 | sequence_init(&(t->fields)); |
576 | while(strcmp("field",token) == 0){ |
577 | parseFields(in,t, unnamed_types, named_types); |
578 | |
579 | //next field |
580 | getLAnglebracket(in); |
581 | token = getToken(in); |
582 | } |
583 | if(strcmp("/",token))in->error(in,"not a valid structure definition"); |
584 | token = getName(in); |
585 | if(strcmp("struct",token)!=0) |
586 | in->error(in,"not a valid structure definition"); |
587 | getRAnglebracket(in); //</struct> |
588 | } |
589 | else if(strcmp(token,"union") == 0) { |
590 | t->type = UNION; |
9774b764 |
591 | getTypeAttributes(in, t); |
592 | if(t->size == -1) in->error(in, "Union has empty size"); |
3888436c |
593 | getRAnglebracket(in); //<union typecodesize=isize> |
594 | |
595 | getLAnglebracket(in); //<field name=..> |
596 | token = getToken(in); |
597 | sequence_init(&(t->fields)); |
598 | while(strcmp("field",token) == 0){ |
599 | parseFields(in,t, unnamed_types, named_types); |
600 | |
601 | //next field |
602 | getLAnglebracket(in); |
603 | token = getToken(in); |
604 | } |
605 | if(strcmp("/",token))in->error(in,"not a valid union definition"); |
606 | token = getName(in); |
607 | if(strcmp("union",token)!=0) |
608 | in->error(in,"not a valid union definition"); |
609 | getRAnglebracket(in); //</union> |
610 | } |
611 | else if(strcmp(token,"array") == 0) { |
612 | t->type = ARRAY; |
9774b764 |
613 | getTypeAttributes(in, t); |
614 | if(t->size == -1) in->error(in, "Array has empty size"); |
3888436c |
615 | getRAnglebracket(in); //<array size=n> |
616 | |
617 | getLAnglebracket(in); //<type struct> |
9774b764 |
618 | t->nested_type = parseType(in, NULL, unnamed_types, named_types); |
3888436c |
619 | |
620 | getLAnglebracket(in); //</array> |
621 | getForwardslash(in); |
622 | token = getName(in); |
623 | if(strcmp("array",token))in->error(in,"not a valid array definition"); |
624 | getRAnglebracket(in); //</array> |
625 | } |
626 | else if(strcmp(token,"sequence") == 0) { |
627 | t->type = SEQUENCE; |
9774b764 |
628 | getTypeAttributes(in, t); |
629 | if(t->size == -1) in->error(in, "Sequence has empty size"); |
3888436c |
630 | getRAnglebracket(in); //<array lengthsize=isize> |
631 | |
632 | getLAnglebracket(in); //<type struct> |
633 | t->nested_type = parseType(in,NULL, unnamed_types, named_types); |
634 | |
635 | getLAnglebracket(in); //</sequence> |
636 | getForwardslash(in); |
637 | token = getName(in); |
638 | if(strcmp("sequence",token))in->error(in,"not a valid sequence definition"); |
639 | getRAnglebracket(in); //</sequence> |
640 | } |
641 | else if(strcmp(token,"enum") == 0) { |
642 | char * str, *str1; |
643 | t->type = ENUM; |
644 | sequence_init(&(t->labels)); |
8c6ca411 |
645 | sequence_init(&(t->labels_description)); |
44cac8a9 |
646 | t->already_printed = 0; |
9774b764 |
647 | getTypeAttributes(in, t); |
648 | if(t->size == -1) in->error(in, "Sequence has empty size"); |
3888436c |
649 | getRAnglebracket(in); |
650 | |
651 | //<label name=label1 value=n/> |
652 | getLAnglebracket(in); |
653 | token = getToken(in); //"label" or "/" |
654 | while(strcmp("label",token) == 0){ |
655 | str = allocAndCopy(getNameAttribute(in)); |
656 | token = getValueStrAttribute(in); |
657 | if(token){ |
8c6ca411 |
658 | str1 = appendString(str,"="); |
659 | free(str); |
660 | str = appendString(str1,token); |
661 | free(str1); |
662 | sequence_push(&(t->labels),str); |
663 | } |
664 | else |
665 | sequence_push(&(t->labels),str); |
3888436c |
666 | |
667 | getForwardslash(in); |
668 | getRAnglebracket(in); |
669 | |
8c6ca411 |
670 | //read description if any. May be NULL. |
671 | str = allocAndCopy(getDescription(in)); |
672 | sequence_push(&(t->labels_description),str); |
673 | |
3888436c |
674 | //next label definition |
675 | getLAnglebracket(in); |
676 | token = getToken(in); //"label" or "/" |
677 | } |
678 | if(strcmp("/",token))in->error(in, "not a valid enum definition"); |
679 | token = getName(in); |
680 | if(strcmp("enum",token))in->error(in, "not a valid enum definition"); |
8c6ca411 |
681 | getRAnglebracket(in); //</label> |
3888436c |
682 | } |
683 | else if(strcmp(token,"int") == 0) { |
684 | t->type = INT; |
9774b764 |
685 | getTypeAttributes(in, t); |
686 | if(t->size == -1) in->error(in, "int has empty size"); |
3888436c |
687 | getForwardslash(in); |
688 | getRAnglebracket(in); |
689 | } |
690 | else if(strcmp(token,"uint") == 0) { |
691 | t->type = UINT; |
9774b764 |
692 | getTypeAttributes(in, t); |
693 | if(t->size == -1) in->error(in, "uint has empty size"); |
3888436c |
694 | getForwardslash(in); |
695 | getRAnglebracket(in); |
696 | } |
31cbc5d3 |
697 | else if(strcmp(token,"pointer") == 0) { |
698 | t->type = POINTER; |
9774b764 |
699 | getTypeAttributes(in, t); |
31cbc5d3 |
700 | getForwardslash(in); |
701 | getRAnglebracket(in); |
702 | } |
703 | else if(strcmp(token,"long") == 0) { |
704 | t->type = LONG; |
9774b764 |
705 | getTypeAttributes(in, t); |
31cbc5d3 |
706 | getForwardslash(in); |
707 | getRAnglebracket(in); |
708 | } |
709 | else if(strcmp(token,"ulong") == 0) { |
710 | t->type = ULONG; |
9774b764 |
711 | getTypeAttributes(in, t); |
31cbc5d3 |
712 | getForwardslash(in); |
713 | getRAnglebracket(in); |
714 | } |
715 | else if(strcmp(token,"size_t") == 0) { |
716 | t->type = SIZE_T; |
9774b764 |
717 | getTypeAttributes(in, t); |
31cbc5d3 |
718 | getForwardslash(in); |
719 | getRAnglebracket(in); |
720 | } |
721 | else if(strcmp(token,"ssize_t") == 0) { |
722 | t->type = SSIZE_T; |
9774b764 |
723 | getTypeAttributes(in, t); |
31cbc5d3 |
724 | getForwardslash(in); |
725 | getRAnglebracket(in); |
726 | } |
727 | else if(strcmp(token,"off_t") == 0) { |
728 | t->type = OFF_T; |
9774b764 |
729 | getTypeAttributes(in, t); |
31cbc5d3 |
730 | getForwardslash(in); |
731 | getRAnglebracket(in); |
732 | } |
3888436c |
733 | else if(strcmp(token,"float") == 0) { |
734 | t->type = FLOAT; |
9774b764 |
735 | getTypeAttributes(in, t); |
3888436c |
736 | getForwardslash(in); |
737 | getRAnglebracket(in); |
738 | } |
739 | else if(strcmp(token,"string") == 0) { |
740 | t->type = STRING; |
9774b764 |
741 | getTypeAttributes(in, t); |
3888436c |
742 | getForwardslash(in); |
743 | getRAnglebracket(in); |
744 | } |
745 | else if(strcmp(token,"typeref") == 0){ |
746 | // Must be a named type |
747 | if(inType != NULL) |
748 | in->error(in,"Named type cannot refer to a named type"); |
749 | else { |
750 | free(t); |
751 | sequence_pop(unnamed_types); |
752 | token = getNameAttribute(in); |
753 | t = find_named_type(token, named_types); |
754 | getForwardslash(in); //<typeref name=type_name/> |
755 | getRAnglebracket(in); |
756 | return t; |
757 | } |
758 | }else in->error(in,"not a valid type"); |
759 | |
760 | return t; |
761 | } |
762 | |
763 | /***************************************************************************** |
764 | *Function name |
765 | * find_named_type : find a named type from hash table |
766 | *Input params |
767 | * name : type name |
768 | * named_types : array of named types |
769 | *Return values |
770 | * type_descriptor * : a type descriptor |
771 | *****************************************************************************/ |
772 | |
773 | type_descriptor * find_named_type(char *name, table * named_types) |
774 | { |
775 | type_descriptor *t; |
776 | |
777 | t = table_find(named_types,name); |
778 | if(t == NULL) { |
779 | t = (type_descriptor *)memAlloc(sizeof(type_descriptor)); |
780 | t->type_name = allocAndCopy(name); |
781 | t->type = NONE; |
782 | t->fmt = NULL; |
783 | table_insert(named_types,t->type_name,t); |
784 | // table_insert(named_types,allocAndCopy(name),t); |
785 | } |
786 | return t; |
787 | } |
788 | |
789 | /***************************************************************************** |
790 | *Function name |
791 | * parseTypeDefinition : get type information from type definition |
792 | *Input params |
793 | * in : input file handle |
794 | * unnamed_types : array of unamed types |
795 | * named_types : array of named types |
796 | *****************************************************************************/ |
797 | |
798 | void parseTypeDefinition(parse_file * in, sequence * unnamed_types, |
799 | table * named_types) |
800 | { |
801 | char *token; |
802 | type_descriptor *t; |
803 | |
804 | token = getNameAttribute(in); |
9774b764 |
805 | if(token == NULL) in->error(in, "Type has empty name"); |
3888436c |
806 | t = find_named_type(token, named_types); |
807 | |
808 | if(t->type != NONE) in->error(in,"redefinition of named type"); |
809 | getRAnglebracket(in); //<type name=type_name> |
9774b764 |
810 | getLAnglebracket(in); //< |
3888436c |
811 | token = getName(in); |
cb1eb7ce |
812 | //MD ??if(strcmp("struct",token))in->error(in,"not a valid type definition"); |
3888436c |
813 | ungetToken(in); |
814 | parseType(in,t, unnamed_types, named_types); |
815 | |
816 | //</type> |
817 | getLAnglebracket(in); |
818 | getForwardslash(in); |
819 | token = getName(in); |
820 | if(strcmp("type",token))in->error(in,"not a valid type definition"); |
821 | getRAnglebracket(in); //</type> |
822 | } |
823 | |
824 | /************************************************************************** |
825 | * Function : |
826 | * getComa, getName, getNumber, getEqual |
827 | * Description : |
828 | * Read a token from the input file, check its type, return it scontent. |
829 | * |
830 | * Parameters : |
831 | * in , input file handle. |
832 | * |
833 | * Return values : |
834 | * address of token content. |
835 | * |
836 | **************************************************************************/ |
837 | |
838 | char *getName(parse_file * in) |
839 | { |
840 | char *token; |
841 | |
842 | token = getToken(in); |
843 | if(in->type != NAME) in->error(in,"Name token was expected"); |
844 | return token; |
845 | } |
846 | |
847 | int getNumber(parse_file * in) |
848 | { |
849 | char *token; |
850 | |
851 | token = getToken(in); |
852 | if(in->type != NUMBER) in->error(in, "Number token was expected"); |
853 | return atoi(token); |
854 | } |
855 | |
856 | char *getForwardslash(parse_file * in) |
857 | { |
858 | char *token; |
859 | |
860 | token = getToken(in); |
861 | if(in->type != FORWARDSLASH) in->error(in, "forward slash token was expected"); |
862 | return token; |
863 | } |
864 | |
865 | char *getLAnglebracket(parse_file * in) |
866 | { |
867 | char *token; |
868 | |
869 | token = getToken(in); |
870 | if(in->type != LANGLEBRACKET) in->error(in, "Left angle bracket was expected"); |
871 | return token; |
872 | } |
873 | |
874 | char *getRAnglebracket(parse_file * in) |
875 | { |
876 | char *token; |
877 | |
878 | token = getToken(in); |
879 | if(in->type != RANGLEBRACKET) in->error(in, "Right angle bracket was expected"); |
880 | return token; |
881 | } |
882 | |
883 | char *getQuotedString(parse_file * in) |
884 | { |
885 | char *token; |
886 | |
887 | token = getToken(in); |
888 | if(in->type != QUOTEDSTRING) in->error(in, "quoted string was expected"); |
889 | return token; |
890 | } |
891 | |
892 | char * getEqual(parse_file *in) |
893 | { |
894 | char *token; |
895 | |
896 | token = getToken(in); |
897 | if(in->type != EQUAL) in->error(in, "equal was expected"); |
898 | return token; |
899 | } |
900 | |
901 | char seekNextChar(parse_file *in) |
902 | { |
903 | char car; |
904 | while((car = getc(in->fp)) != EOF) { |
905 | if(!isspace(car)){ |
906 | ungetc(car,in->fp); |
907 | return car; |
908 | } |
909 | } |
910 | return EOF; |
911 | } |
912 | |
913 | /****************************************************************** |
914 | * Function : |
915 | * getToken, ungetToken |
916 | * Description : |
917 | * Read a token from the input file and return its type and content. |
918 | * Line numbers are accounted for and whitespace/comments are skipped. |
919 | * |
920 | * Parameters : |
921 | * in, input file handle. |
922 | * |
923 | * Return values : |
924 | * address of token content. |
925 | * |
926 | ******************************************************************/ |
927 | |
928 | void ungetToken(parse_file * in) |
929 | { |
930 | in->unget = 1; |
931 | } |
932 | |
933 | char *getToken(parse_file * in) |
934 | { |
935 | FILE *fp = in->fp; |
936 | char car, car1; |
937 | int pos = 0, escaped; |
938 | |
939 | if(in->unget == 1) { |
940 | in->unget = 0; |
941 | return in->buffer; |
942 | } |
943 | |
944 | /* skip whitespace and comments */ |
945 | |
946 | while((car = getc(fp)) != EOF) { |
947 | if(car == '/') { |
948 | car1 = getc(fp); |
949 | if(car1 == '*') skipComment(in); |
950 | else if(car1 == '/') skipEOL(in); |
951 | else { |
952 | car1 = ungetc(car1,fp); |
953 | break; |
954 | } |
955 | } |
956 | else if(car == '\n') in->lineno++; |
957 | else if(!isspace(car)) break; |
958 | } |
959 | |
960 | switch(car) { |
961 | case EOF: |
962 | in->type = ENDFILE; |
963 | break; |
964 | case '/': |
965 | in->type = FORWARDSLASH; |
966 | in->buffer[pos] = car; |
967 | pos++; |
968 | break; |
969 | case '<': |
970 | in->type = LANGLEBRACKET; |
971 | in->buffer[pos] = car; |
972 | pos++; |
973 | break; |
974 | case '>': |
975 | in->type = RANGLEBRACKET; |
976 | in->buffer[pos] = car; |
977 | pos++; |
978 | break; |
979 | case '=': |
980 | in->type = EQUAL; |
981 | in->buffer[pos] = car; |
982 | pos++; |
983 | break; |
984 | case '"': |
985 | escaped = 0; |
986 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
987 | if(car == '\\' && escaped == 0) { |
988 | in->buffer[pos] = car; |
989 | pos++; |
990 | escaped = 1; |
991 | continue; |
992 | } |
993 | if(car == '"' && escaped == 0) break; |
994 | if(car == '\n' && escaped == 0) { |
995 | in->error(in, "non escaped newline inside quoted string"); |
996 | } |
997 | if(car == '\n') in->lineno++; |
998 | in->buffer[pos] = car; |
999 | pos++; |
1000 | escaped = 0; |
1001 | } |
1002 | if(car == EOF) in->error(in,"no ending quotemark"); |
1003 | if(pos == BUFFER_SIZE) in->error(in, "quoted string token too large"); |
1004 | in->type = QUOTEDSTRING; |
1005 | break; |
1006 | default: |
1007 | if(isdigit(car)) { |
1008 | in->buffer[pos] = car; |
1009 | pos++; |
1010 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
1011 | if(!isdigit(car)) { |
1012 | ungetc(car,fp); |
1013 | break; |
1014 | } |
1015 | in->buffer[pos] = car; |
1016 | pos++; |
1017 | } |
1018 | if(car == EOF) ungetc(car,fp); |
1019 | if(pos == BUFFER_SIZE) in->error(in, "number token too large"); |
1020 | in->type = NUMBER; |
1021 | } |
1022 | else if(isalpha(car)) { |
1023 | in->buffer[0] = car; |
1024 | pos = 1; |
1025 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
31cbc5d3 |
1026 | if(!(isalnum(car) || car == '_')) { |
3888436c |
1027 | ungetc(car,fp); |
1028 | break; |
1029 | } |
1030 | in->buffer[pos] = car; |
1031 | pos++; |
1032 | } |
1033 | if(car == EOF) ungetc(car,fp); |
1034 | if(pos == BUFFER_SIZE) in->error(in, "name token too large"); |
1035 | in->type = NAME; |
1036 | } |
1037 | else in->error(in, "invalid character, unrecognized token"); |
1038 | } |
1039 | in->buffer[pos] = 0; |
1040 | return in->buffer; |
1041 | } |
1042 | |
1043 | void skipComment(parse_file * in) |
1044 | { |
1045 | char car; |
1046 | while((car = getc(in->fp)) != EOF) { |
1047 | if(car == '\n') in->lineno++; |
1048 | else if(car == '*') { |
1049 | car = getc(in->fp); |
1050 | if(car ==EOF) break; |
1051 | if(car == '/') return; |
1052 | ungetc(car,in->fp); |
1053 | } |
1054 | } |
1055 | if(car == EOF) in->error(in,"comment begining with '/*' has no ending '*/'"); |
1056 | } |
1057 | |
1058 | void skipEOL(parse_file * in) |
1059 | { |
1060 | char car; |
1061 | while((car = getc(in->fp)) != EOF) { |
1062 | if(car == '\n') { |
1063 | ungetc(car,in->fp); |
1064 | break; |
1065 | } |
1066 | } |
1067 | if(car == EOF)ungetc(car, in->fp); |
1068 | } |
1069 | |
3888436c |
1070 | /***************************************************************************** |
1071 | *Function name |
1072 | * checkNamedTypesImplemented : check if all named types have definition |
1073 | ****************************************************************************/ |
1074 | |
1075 | void checkNamedTypesImplemented(table * named_types) |
1076 | { |
1077 | type_descriptor *t; |
1078 | int pos; |
1079 | char str[256]; |
1080 | |
1081 | for(pos = 0 ; pos < named_types->values.position; pos++) { |
1082 | t = (type_descriptor *) named_types->values.array[pos]; |
1083 | if(t->type == NONE){ |
1084 | sprintf(str,"named type '%s' has no definition",(char*)named_types->keys.array[pos]); |
1085 | error_callback(NULL,str); |
1086 | } |
1087 | } |
1088 | } |
1089 | |
1090 | |
1091 | /***************************************************************************** |
1092 | *Function name |
1093 | * generateChecksum : generate checksum for the facility |
1094 | *Input Params |
1095 | * facName : name of facility |
1096 | *Output Params |
1097 | * checksum : checksum for the facility |
1098 | ****************************************************************************/ |
1099 | |
1100 | void generateChecksum( char* facName, unsigned long * checksum, sequence * events) |
1101 | { |
1102 | unsigned long crc ; |
1103 | int pos; |
1104 | event * ev; |
1105 | char str[256]; |
1106 | |
1107 | crc = crc32(facName); |
1108 | for(pos = 0; pos < events->position; pos++){ |
1109 | ev = (event *)(events->array[pos]); |
1110 | crc = partial_crc32(ev->name,crc); |
1111 | if(!ev->type) continue; //event without type |
1112 | if(ev->type->type != STRUCT){ |
1113 | sprintf(str,"event '%s' has a type other than STRUCT",ev->name); |
1114 | error_callback(NULL, str); |
1115 | } |
1116 | crc = getTypeChecksum(crc, ev->type); |
1117 | } |
1118 | *checksum = crc; |
1119 | } |
1120 | |
1121 | /***************************************************************************** |
1122 | *Function name |
1123 | * getTypeChecksum : generate checksum by type info |
1124 | *Input Params |
1125 | * crc : checksum generated so far |
1126 | * type : type descriptor containing type info |
1127 | *Return value |
1128 | * unsigned long : checksum |
1129 | *****************************************************************************/ |
1130 | |
1131 | unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type) |
1132 | { |
1133 | unsigned long crc = aCrc; |
1134 | char * str = NULL, buf[16]; |
1135 | int flag = 0, pos; |
1136 | field * fld; |
1137 | |
1138 | switch(type->type){ |
1139 | case INT: |
1140 | str = intOutputTypes[type->size]; |
1141 | break; |
1142 | case UINT: |
1143 | str = uintOutputTypes[type->size]; |
1144 | break; |
31cbc5d3 |
1145 | case POINTER: |
1146 | str = allocAndCopy("void *"); |
1147 | flag = 1; |
1148 | break; |
1149 | case LONG: |
1150 | str = allocAndCopy("long"); |
1151 | flag = 1; |
1152 | break; |
1153 | case ULONG: |
1154 | str = allocAndCopy("unsigned long"); |
1155 | flag = 1; |
1156 | break; |
1157 | case SIZE_T: |
1158 | str = allocAndCopy("size_t"); |
1159 | flag = 1; |
1160 | break; |
1161 | case SSIZE_T: |
1162 | str = allocAndCopy("ssize_t"); |
1163 | flag = 1; |
1164 | break; |
1165 | case OFF_T: |
1166 | str = allocAndCopy("off_t"); |
1167 | flag = 1; |
1168 | break; |
3888436c |
1169 | case FLOAT: |
1170 | str = floatOutputTypes[type->size]; |
1171 | break; |
1172 | case STRING: |
1173 | str = allocAndCopy("string"); |
1174 | flag = 1; |
1175 | break; |
1176 | case ENUM: |
1177 | str = appendString("enum ", uintOutputTypes[type->size]); |
1178 | flag = 1; |
1179 | break; |
1180 | case ARRAY: |
1181 | sprintf(buf,"%d\0",type->size); |
1182 | str = appendString("array ",buf); |
1183 | flag = 1; |
1184 | break; |
1185 | case SEQUENCE: |
1186 | sprintf(buf,"%d\0",type->size); |
1187 | str = appendString("sequence ",buf); |
1188 | flag = 1; |
1189 | break; |
1190 | case STRUCT: |
1191 | str = allocAndCopy("struct"); |
1192 | flag = 1; |
1193 | break; |
1194 | case UNION: |
1195 | str = allocAndCopy("union"); |
1196 | flag = 1; |
1197 | break; |
1198 | default: |
1199 | error_callback(NULL, "named type has no definition"); |
1200 | break; |
1201 | } |
1202 | |
1203 | crc = partial_crc32(str,crc); |
1204 | if(flag) free(str); |
1205 | |
1206 | if(type->fmt) crc = partial_crc32(type->fmt,crc); |
1207 | |
1208 | if(type->type == ARRAY || type->type == SEQUENCE){ |
1209 | crc = getTypeChecksum(crc,type->nested_type); |
1210 | }else if(type->type == STRUCT || type->type == UNION){ |
1211 | for(pos =0; pos < type->fields.position; pos++){ |
1212 | fld = (field *) type->fields.array[pos]; |
1213 | crc = partial_crc32(fld->name,crc); |
1214 | crc = getTypeChecksum(crc, fld->type); |
1215 | } |
1216 | }else if(type->type == ENUM){ |
1217 | for(pos = 0; pos < type->labels.position; pos++) |
1218 | crc = partial_crc32((char*)type->labels.array[pos],crc); |
1219 | } |
1220 | |
1221 | return crc; |
1222 | } |
1223 | |
1224 | |
1225 | /* Event type descriptors */ |
1226 | void freeType(type_descriptor * tp) |
1227 | { |
1228 | int pos2; |
1229 | field *f; |
1230 | |
1231 | if(tp->fmt != NULL) free(tp->fmt); |
1232 | if(tp->type == ENUM) { |
1233 | for(pos2 = 0; pos2 < tp->labels.position; pos2++) { |
1234 | free(tp->labels.array[pos2]); |
1235 | } |
1236 | sequence_dispose(&(tp->labels)); |
1237 | } |
1238 | if(tp->type == STRUCT) { |
1239 | for(pos2 = 0; pos2 < tp->fields.position; pos2++) { |
1240 | f = (field *) tp->fields.array[pos2]; |
1241 | free(f->name); |
1242 | free(f->description); |
1243 | free(f); |
1244 | } |
1245 | sequence_dispose(&(tp->fields)); |
1246 | } |
1247 | } |
1248 | |
1249 | void freeNamedType(table * t) |
1250 | { |
1251 | int pos; |
1252 | type_descriptor * td; |
1253 | |
1254 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1255 | free((char *)t->keys.array[pos]); |
1256 | td = (type_descriptor*)t->values.array[pos]; |
1257 | freeType(td); |
1258 | free(td); |
1259 | } |
1260 | } |
1261 | |
1262 | void freeTypes(sequence *t) |
1263 | { |
1264 | int pos, pos2; |
1265 | type_descriptor *tp; |
1266 | field *f; |
1267 | |
1268 | for(pos = 0 ; pos < t->position; pos++) { |
1269 | tp = (type_descriptor *)t->array[pos]; |
1270 | freeType(tp); |
1271 | free(tp); |
1272 | } |
1273 | } |
1274 | |
1275 | void freeEvents(sequence *t) |
1276 | { |
1277 | int pos; |
1278 | event *ev; |
1279 | |
1280 | for(pos = 0 ; pos < t->position; pos++) { |
1281 | ev = (event *) t->array[pos]; |
1282 | free(ev->name); |
1283 | free(ev->description); |
1284 | free(ev); |
1285 | } |
1286 | |
1287 | } |
1288 | |
1289 | |
1290 | /* Extensible array */ |
1291 | |
1292 | void sequence_init(sequence *t) |
1293 | { |
1294 | t->size = 10; |
1295 | t->position = 0; |
1296 | t->array = (void **)memAlloc(t->size * sizeof(void *)); |
1297 | } |
1298 | |
1299 | void sequence_dispose(sequence *t) |
1300 | { |
1301 | t->size = 0; |
1302 | free(t->array); |
1303 | t->array = NULL; |
1304 | } |
1305 | |
1306 | void sequence_push(sequence *t, void *elem) |
1307 | { |
1308 | void **tmp; |
1309 | |
1310 | if(t->position >= t->size) { |
1311 | tmp = t->array; |
1312 | t->array = (void **)memAlloc(t->size * 2 * sizeof(void *)); |
1313 | memcpy(t->array, tmp, t->size * sizeof(void *)); |
1314 | t->size = t->size * 2; |
1315 | free(tmp); |
1316 | } |
1317 | t->array[t->position] = elem; |
1318 | t->position++; |
1319 | } |
1320 | |
1321 | void *sequence_pop(sequence *t) |
1322 | { |
1323 | return t->array[t->position--]; |
1324 | } |
1325 | |
1326 | |
1327 | /* Hash table API, implementation is just linear search for now */ |
1328 | |
1329 | void table_init(table *t) |
1330 | { |
1331 | sequence_init(&(t->keys)); |
1332 | sequence_init(&(t->values)); |
1333 | } |
1334 | |
1335 | void table_dispose(table *t) |
1336 | { |
1337 | sequence_dispose(&(t->keys)); |
1338 | sequence_dispose(&(t->values)); |
1339 | } |
1340 | |
1341 | void table_insert(table *t, char *key, void *value) |
1342 | { |
1343 | sequence_push(&(t->keys),key); |
1344 | sequence_push(&(t->values),value); |
1345 | } |
1346 | |
1347 | void *table_find(table *t, char *key) |
1348 | { |
1349 | int pos; |
1350 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1351 | if(strcmp((char *)key,(char *)t->keys.array[pos]) == 0) |
1352 | return(t->values.array[pos]); |
1353 | } |
1354 | return NULL; |
1355 | } |
1356 | |
1357 | void table_insert_int(table *t, int *key, void *value) |
1358 | { |
1359 | sequence_push(&(t->keys),key); |
1360 | sequence_push(&(t->values),value); |
1361 | } |
1362 | |
1363 | void *table_find_int(table *t, int *key) |
1364 | { |
1365 | int pos; |
1366 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1367 | if(*key == *(int *)t->keys.array[pos]) |
1368 | return(t->values.array[pos]); |
1369 | } |
1370 | return NULL; |
1371 | } |
1372 | |
1373 | |
1374 | /* Concatenate strings */ |
1375 | |
1376 | char *appendString(char *s, char *suffix) |
1377 | { |
1378 | char *tmp; |
1379 | if(suffix == NULL) return s; |
1380 | |
1381 | tmp = (char *)memAlloc(strlen(s) + strlen(suffix) + 1); |
1382 | strcpy(tmp,s); |
1383 | strcat(tmp,suffix); |
1384 | return tmp; |
1385 | } |
1386 | |
1387 | |