6cd62ccf |
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 | |
963b5f2d |
22 | /* This program reads the ".xml" event definitions input files |
23 | and constructs structure for each event. |
6cd62ccf |
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 |
963b5f2d |
33 | information when the processing of an ".xml" file is finished. */ |
6cd62ccf |
34 | |
35 | #include <stdlib.h> |
36 | #include <string.h> |
37 | #include <stdio.h> |
38 | #include <stdarg.h> |
8d1e6362 |
39 | #include <ctype.h> |
6cd62ccf |
40 | #include <linux/errno.h> |
41 | |
42 | |
43 | #include "parser.h" |
44 | |
45 | |
fc063e40 |
46 | static int ltt_isalpha(char c) |
47 | { |
48 | int i,j; |
49 | if(c == '_')return 1; |
50 | i = c - 'a'; |
51 | j = c - 'A'; |
52 | if((i>=0 && i<26) || (j>=0 && j<26)) return 1; |
53 | return 0; |
54 | } |
55 | |
56 | static int ltt_isalnum(char c) |
57 | { |
58 | return (ltt_isalpha(c) || isdigit(c)); |
59 | } |
60 | |
6cd62ccf |
61 | /***************************************************************************** |
62 | *Function name |
63 | * getSize : translate from string to integer |
64 | *Input params |
65 | * in : input file handle |
66 | *Return values |
67 | * size |
68 | *****************************************************************************/ |
69 | |
70 | int getSize(parse_file *in) |
71 | { |
72 | char *token; |
73 | |
74 | token = getToken(in); |
75 | if(in->type == NUMBER) { |
76 | if(strcmp(token,"1") == 0) return 0; |
77 | else if(strcmp(token,"2") == 0) return 1; |
78 | else if(strcmp(token,"4") == 0) return 2; |
79 | else if(strcmp(token,"8") == 0) return 3; |
80 | } |
81 | else if(in->type == NAME) { |
82 | if(strcmp(token,"short") == 0) return 4; |
83 | else if(strcmp(token,"medium") == 0) return 5; |
84 | else if(strcmp(token,"long") == 0) return 6; |
85 | } |
86 | in->error(in,"incorrect size specification"); |
87 | return -1; |
88 | } |
89 | |
90 | /***************************************************************************** |
91 | *Function name |
92 | * error_callback : print out error info |
93 | *Input params |
94 | * in : input file handle |
95 | * msg : message to be printed |
96 | ****************************************************************************/ |
97 | |
98 | void error_callback(parse_file *in, char *msg) |
99 | { |
100 | if(in) |
101 | printf("Error in file %s, line %d: %s\n", in->name, in->lineno, msg); |
102 | else |
103 | printf("%s\n",msg); |
6cd62ccf |
104 | } |
105 | |
106 | /***************************************************************************** |
107 | *Function name |
108 | * memAlloc : allocate memory |
109 | *Input params |
110 | * size : required memory size |
111 | *return value |
112 | * void * : pointer to allocate memory or NULL |
113 | ****************************************************************************/ |
114 | |
115 | void * memAlloc(int size) |
116 | { |
963b5f2d |
117 | void * addr; |
118 | if(size == 0) return NULL; |
119 | addr = malloc(size); |
6cd62ccf |
120 | if(!addr){ |
121 | printf("Failed to allocate memory"); |
122 | exit(1); |
123 | } |
124 | return addr; |
125 | } |
126 | |
127 | /***************************************************************************** |
128 | *Function name |
129 | * allocAndCopy : allocate memory and initialize it |
130 | *Input params |
131 | * str : string to be put in memory |
132 | *return value |
133 | * char * : pointer to allocate memory or NULL |
134 | ****************************************************************************/ |
135 | |
136 | char *allocAndCopy(char *str) |
137 | { |
963b5f2d |
138 | char * addr; |
139 | if(str == NULL) return NULL; |
140 | addr = (char *)memAlloc(strlen(str)+1); |
6cd62ccf |
141 | strcpy(addr,str); |
142 | return addr; |
143 | } |
144 | |
963b5f2d |
145 | /************************************************************************** |
146 | * Function : |
147 | * getNameAttribute,getFormatAttribute,getSizeAttribute,getValueAttribute |
148 | * getValueStrAttribute |
149 | * Description : |
150 | * Read the attribute from the input file. |
151 | * |
152 | * Parameters : |
153 | * in , input file handle. |
154 | * |
155 | * Return values : |
156 | * address of the attribute. |
157 | * |
158 | **************************************************************************/ |
159 | |
160 | char * getNameAttribute(parse_file *in) |
161 | { |
162 | char * token, car; |
163 | token = getName(in); |
164 | if(strcmp("name",token))in->error(in,"name was expected"); |
165 | getEqual(in); |
166 | |
167 | car = seekNextChar(in); |
168 | if(car == EOF)in->error(in,"name was expected"); |
169 | else if(car == '\"')token = getQuotedString(in); |
170 | else token = getName(in); |
171 | return token; |
172 | } |
173 | |
174 | char * getFormatAttribute(parse_file *in) |
175 | { |
176 | char * token; |
177 | |
178 | //format is an option |
179 | token = getToken(in); |
bf410332 |
180 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
963b5f2d |
181 | ungetToken(in); |
182 | return NULL; |
183 | } |
184 | |
185 | if(strcmp("format",token))in->error(in,"format was expected"); |
186 | getEqual(in); |
187 | token = getQuotedString(in); |
188 | return token; |
189 | } |
190 | |
191 | int getSizeAttribute(parse_file *in) |
192 | { |
8d1e6362 |
193 | /* skip name and equal */ |
963b5f2d |
194 | getName(in); |
195 | getEqual(in); |
196 | |
197 | return getSize(in); |
198 | } |
199 | |
200 | int getValueAttribute(parse_file *in) |
201 | { |
8d1e6362 |
202 | /* skip name and equal */ |
963b5f2d |
203 | getName(in); |
204 | getEqual(in); |
205 | |
206 | return getNumber(in); |
207 | } |
208 | |
209 | //for <label name=label_name value=n/>, value is an option |
210 | char * getValueStrAttribute(parse_file *in) |
211 | { |
212 | char * token; |
213 | |
214 | token = getToken(in); |
215 | if(strcmp("/",token) == 0){ |
216 | ungetToken(in); |
217 | return NULL; |
218 | } |
219 | |
220 | if(strcmp("value",token))in->error(in,"value was expected"); |
221 | getEqual(in); |
222 | token = getToken(in); |
223 | if(in->type != NUMBER) in->error(in,"number was expected"); |
224 | return token; |
225 | } |
226 | |
227 | char * getDescription(parse_file *in) |
228 | { |
229 | long int pos; |
230 | char * token, car, *str; |
231 | |
232 | pos = ftell(in->fp); |
233 | |
234 | getLAnglebracket(in); |
235 | token = getName(in); |
236 | if(strcmp("description",token)){ |
237 | fseek(in->fp, pos, SEEK_SET); |
238 | return NULL; |
239 | } |
240 | |
241 | getRAnglebracket(in); |
242 | |
243 | pos = 0; |
244 | while((car = getc(in->fp)) != EOF) { |
245 | if(car == '<') break; |
246 | if(car == '\0') continue; |
247 | in->buffer[pos] = car; |
248 | pos++; |
249 | } |
250 | if(car == EOF)in->error(in,"not a valid description"); |
251 | in->buffer[pos] = '\0'; |
252 | |
253 | str = allocAndCopy(in->buffer); |
254 | |
255 | getForwardslash(in); |
256 | token = getName(in); |
257 | if(strcmp("description", token))in->error(in,"not a valid description"); |
258 | getRAnglebracket(in); |
259 | |
260 | return str; |
261 | } |
262 | |
263 | /***************************************************************************** |
264 | *Function name |
265 | * parseFacility : generate event list |
266 | *Input params |
267 | * in : input file handle |
268 | * fac : empty facility |
269 | *Output params |
270 | * fac : facility filled with event list |
271 | ****************************************************************************/ |
272 | |
8d1e6362 |
273 | void parseFacility(parse_file *in, facility_t * fac) |
963b5f2d |
274 | { |
275 | char * token; |
8d1e6362 |
276 | event_t *ev; |
963b5f2d |
277 | |
278 | fac->name = allocAndCopy(getNameAttribute(in)); |
279 | getRAnglebracket(in); |
280 | |
ed9d56bd |
281 | fac->description = getDescription(in); |
963b5f2d |
282 | |
283 | while(1){ |
284 | getLAnglebracket(in); |
285 | |
286 | token = getToken(in); |
287 | if(in->type == ENDFILE) |
288 | in->error(in,"the definition of the facility is not finished"); |
289 | |
290 | if(strcmp("event",token) == 0){ |
8d1e6362 |
291 | ev = (event_t*) memAlloc(sizeof(event_t)); |
963b5f2d |
292 | sequence_push(&(fac->events),ev); |
293 | parseEvent(in,ev, &(fac->unnamed_types), &(fac->named_types)); |
294 | }else if(strcmp("type",token) == 0){ |
295 | parseTypeDefinition(in, &(fac->unnamed_types), &(fac->named_types)); |
296 | }else if(in->type == FORWARDSLASH){ |
297 | break; |
298 | }else in->error(in,"event or type token expected\n"); |
299 | } |
300 | |
301 | token = getName(in); |
302 | if(strcmp("facility",token)) in->error(in,"not the end of the facility"); |
303 | getRAnglebracket(in); //</facility> |
304 | } |
6cd62ccf |
305 | |
306 | /***************************************************************************** |
307 | *Function name |
308 | * parseEvent : generate event from event definition |
309 | *Input params |
310 | * in : input file handle |
311 | * ev : new event |
963b5f2d |
312 | * unnamed_types : array of unamed types |
313 | * named_types : array of named types |
6cd62ccf |
314 | *Output params |
315 | * ev : new event (parameters are passed to it) |
316 | ****************************************************************************/ |
317 | |
8d1e6362 |
318 | void parseEvent(parse_file *in, event_t * ev, sequence * unnamed_types, |
6cd62ccf |
319 | table * named_types) |
320 | { |
321 | char *token; |
6cd62ccf |
322 | |
963b5f2d |
323 | //<event name=eventtype_name> |
324 | ev->name = allocAndCopy(getNameAttribute(in)); |
325 | getRAnglebracket(in); |
6cd62ccf |
326 | |
963b5f2d |
327 | //<description>...</descriptio> |
ed9d56bd |
328 | ev->description = getDescription(in); |
6cd62ccf |
329 | |
963b5f2d |
330 | //event can have STRUCT, TYPEREF or NOTHING |
331 | getLAnglebracket(in); |
6cd62ccf |
332 | |
963b5f2d |
333 | token = getToken(in); |
334 | if(in->type == FORWARDSLASH){ //</event> NOTHING |
335 | ev->type = NULL; |
336 | }else if(in->type == NAME){ |
337 | if(strcmp("struct",token)==0 || strcmp("typeref",token)==0){ |
338 | ungetToken(in); |
339 | ev->type = parseType(in,NULL, unnamed_types, named_types); |
340 | if(ev->type->type != STRUCT && ev->type->type != NONE) |
341 | in->error(in,"type must be a struct"); |
342 | }else in->error(in, "not a valid type"); |
343 | |
344 | getLAnglebracket(in); |
345 | getForwardslash(in); |
6cd62ccf |
346 | }else in->error(in,"not a struct type"); |
347 | |
963b5f2d |
348 | token = getName(in); |
349 | if(strcmp("event",token))in->error(in,"not an event definition"); |
350 | getRAnglebracket(in); //</event> |
6cd62ccf |
351 | } |
352 | |
353 | /***************************************************************************** |
354 | *Function name |
963b5f2d |
355 | * parseField : get field infomation from buffer |
6cd62ccf |
356 | *Input params |
963b5f2d |
357 | * in : input file handle |
358 | * t : type descriptor |
359 | * unnamed_types : array of unamed types |
360 | * named_types : array of named types |
6cd62ccf |
361 | ****************************************************************************/ |
362 | |
363 | void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types, |
364 | table * named_types) |
365 | { |
366 | char * token; |
8d1e6362 |
367 | type_fields *f; |
6cd62ccf |
368 | |
8d1e6362 |
369 | f = (type_fields *)memAlloc(sizeof(type_fields)); |
963b5f2d |
370 | sequence_push(&(t->fields),f); |
6cd62ccf |
371 | |
963b5f2d |
372 | //<field name=field_name> <description> <type> </field> |
373 | f->name = allocAndCopy(getNameAttribute(in)); |
374 | getRAnglebracket(in); |
375 | |
ed9d56bd |
376 | f->description = getDescription(in); |
963b5f2d |
377 | |
378 | //<int size=...> |
379 | getLAnglebracket(in); |
380 | f->type = parseType(in,NULL, unnamed_types, named_types); |
6cd62ccf |
381 | |
963b5f2d |
382 | getLAnglebracket(in); |
383 | getForwardslash(in); |
384 | token = getName(in); |
385 | if(strcmp("field",token))in->error(in,"not a valid field definition"); |
386 | getRAnglebracket(in); //</field> |
6cd62ccf |
387 | } |
388 | |
389 | |
390 | /***************************************************************************** |
391 | *Function name |
392 | * parseType : get type information, type can be : |
393 | * Primitive: |
394 | * int(size,fmt); uint(size,fmt); float(size,fmt); |
395 | * string(fmt); enum(size,fmt,(label1,label2...)) |
396 | * Compound: |
397 | * array(arraySize, type); sequence(lengthSize,type) |
398 | * struct(field(name,type,description)...) |
399 | * type name: |
400 | * type(name,type) |
401 | *Input params |
402 | * in : input file handle |
403 | * inType : a type descriptor |
963b5f2d |
404 | * unnamed_types : array of unamed types |
405 | * named_types : array of named types |
6cd62ccf |
406 | *Return values |
407 | * type_descriptor* : a type descriptor |
408 | ****************************************************************************/ |
409 | |
410 | type_descriptor *parseType(parse_file *in, type_descriptor *inType, |
411 | sequence * unnamed_types, table * named_types) |
412 | { |
963b5f2d |
413 | char *token; |
6cd62ccf |
414 | type_descriptor *t; |
415 | |
416 | if(inType == NULL) { |
417 | t = (type_descriptor *) memAlloc(sizeof(type_descriptor)); |
418 | t->type_name = NULL; |
419 | t->type = NONE; |
420 | t->fmt = NULL; |
421 | sequence_push(unnamed_types,t); |
422 | } |
423 | else t = inType; |
424 | |
425 | token = getName(in); |
426 | |
427 | if(strcmp(token,"struct") == 0) { |
428 | t->type = STRUCT; |
963b5f2d |
429 | getRAnglebracket(in); //<struct> |
430 | getLAnglebracket(in); //<field name=..> |
431 | token = getToken(in); |
432 | sequence_init(&(t->fields)); |
433 | while(strcmp("field",token) == 0){ |
434 | parseFields(in,t, unnamed_types, named_types); |
435 | |
436 | //next field |
437 | getLAnglebracket(in); |
438 | token = getToken(in); |
439 | } |
440 | if(strcmp("/",token))in->error(in,"not a valid structure definition"); |
441 | token = getName(in); |
442 | if(strcmp("struct",token)!=0) |
443 | in->error(in,"not a valid structure definition"); |
444 | getRAnglebracket(in); //</struct> |
445 | } |
446 | else if(strcmp(token,"union") == 0) { |
447 | t->type = UNION; |
448 | t->size = getSizeAttribute(in); |
449 | getRAnglebracket(in); //<union typecodesize=isize> |
450 | |
451 | getLAnglebracket(in); //<field name=..> |
452 | token = getToken(in); |
453 | sequence_init(&(t->fields)); |
454 | while(strcmp("field",token) == 0){ |
455 | parseFields(in,t, unnamed_types, named_types); |
456 | |
457 | //next field |
458 | getLAnglebracket(in); |
459 | token = getToken(in); |
460 | } |
461 | if(strcmp("/",token))in->error(in,"not a valid union definition"); |
462 | token = getName(in); |
463 | if(strcmp("union",token)!=0) |
464 | in->error(in,"not a valid union definition"); |
465 | getRAnglebracket(in); //</union> |
6cd62ccf |
466 | } |
467 | else if(strcmp(token,"array") == 0) { |
468 | t->type = ARRAY; |
963b5f2d |
469 | t->size = getValueAttribute(in); |
470 | getRAnglebracket(in); //<array size=n> |
471 | |
472 | getLAnglebracket(in); //<type struct> |
6cd62ccf |
473 | t->nested_type = parseType(in,NULL, unnamed_types, named_types); |
963b5f2d |
474 | |
475 | getLAnglebracket(in); //</array> |
476 | getForwardslash(in); |
477 | token = getName(in); |
478 | if(strcmp("array",token))in->error(in,"not a valid array definition"); |
479 | getRAnglebracket(in); //</array> |
6cd62ccf |
480 | } |
481 | else if(strcmp(token,"sequence") == 0) { |
482 | t->type = SEQUENCE; |
963b5f2d |
483 | t->size = getSizeAttribute(in); |
484 | getRAnglebracket(in); //<array lengthsize=isize> |
485 | |
486 | getLAnglebracket(in); //<type struct> |
6cd62ccf |
487 | t->nested_type = parseType(in,NULL, unnamed_types, named_types); |
963b5f2d |
488 | |
489 | getLAnglebracket(in); //</sequence> |
490 | getForwardslash(in); |
491 | token = getName(in); |
492 | if(strcmp("sequence",token))in->error(in,"not a valid sequence definition"); |
493 | getRAnglebracket(in); //</sequence> |
6cd62ccf |
494 | } |
495 | else if(strcmp(token,"enum") == 0) { |
963b5f2d |
496 | char * str, *str1; |
6cd62ccf |
497 | t->type = ENUM; |
498 | sequence_init(&(t->labels)); |
963b5f2d |
499 | t->size = getSizeAttribute(in); |
500 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
501 | getRAnglebracket(in); |
502 | |
503 | //<label name=label1 value=n/> |
504 | getLAnglebracket(in); |
505 | token = getToken(in); //"label" or "/" |
506 | while(strcmp("label",token) == 0){ |
507 | str = allocAndCopy(getNameAttribute(in)); |
508 | token = getValueStrAttribute(in); |
509 | if(token){ |
510 | str1 = appendString(str,"="); |
511 | free(str); |
512 | str = appendString(str1,token); |
513 | free(str1); |
becaca6d |
514 | sequence_push(&(t->labels),str); |
963b5f2d |
515 | }else |
becaca6d |
516 | sequence_push(&(t->labels),str); |
963b5f2d |
517 | |
518 | getForwardslash(in); |
519 | getRAnglebracket(in); |
520 | |
521 | //next label definition |
522 | getLAnglebracket(in); |
523 | token = getToken(in); //"label" or "/" |
524 | } |
525 | if(strcmp("/",token))in->error(in, "not a valid enum definition"); |
526 | token = getName(in); |
527 | if(strcmp("enum",token))in->error(in, "not a valid enum definition"); |
528 | getRAnglebracket(in); //</label> |
6cd62ccf |
529 | } |
530 | else if(strcmp(token,"int") == 0) { |
531 | t->type = INT; |
963b5f2d |
532 | t->size = getSizeAttribute(in); |
533 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
534 | getForwardslash(in); |
535 | getRAnglebracket(in); |
6cd62ccf |
536 | } |
537 | else if(strcmp(token,"uint") == 0) { |
538 | t->type = UINT; |
963b5f2d |
539 | t->size = getSizeAttribute(in); |
540 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
541 | getForwardslash(in); |
542 | getRAnglebracket(in); |
6cd62ccf |
543 | } |
544 | else if(strcmp(token,"float") == 0) { |
545 | t->type = FLOAT; |
963b5f2d |
546 | t->size = getSizeAttribute(in); |
547 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
548 | getForwardslash(in); |
549 | getRAnglebracket(in); |
6cd62ccf |
550 | } |
551 | else if(strcmp(token,"string") == 0) { |
552 | t->type = STRING; |
963b5f2d |
553 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
554 | getForwardslash(in); |
555 | getRAnglebracket(in); |
6cd62ccf |
556 | } |
963b5f2d |
557 | else if(strcmp(token,"typeref") == 0){ |
558 | // Must be a named type |
6cd62ccf |
559 | if(inType != NULL) |
560 | in->error(in,"Named type cannot refer to a named type"); |
561 | else { |
562 | free(t); |
563 | sequence_pop(unnamed_types); |
963b5f2d |
564 | token = getNameAttribute(in); |
565 | t = find_named_type(token, named_types); |
566 | getForwardslash(in); //<typeref name=type_name/> |
567 | getRAnglebracket(in); |
568 | return t; |
6cd62ccf |
569 | } |
963b5f2d |
570 | }else in->error(in,"not a valid type"); |
6cd62ccf |
571 | |
572 | return t; |
573 | } |
574 | |
575 | /***************************************************************************** |
576 | *Function name |
577 | * find_named_type : find a named type from hash table |
578 | *Input params |
579 | * name : type name |
963b5f2d |
580 | * named_types : array of named types |
6cd62ccf |
581 | *Return values |
582 | * type_descriptor * : a type descriptor |
583 | *****************************************************************************/ |
584 | |
585 | type_descriptor * find_named_type(char *name, table * named_types) |
586 | { |
587 | type_descriptor *t; |
588 | |
589 | t = table_find(named_types,name); |
590 | if(t == NULL) { |
591 | t = (type_descriptor *)memAlloc(sizeof(type_descriptor)); |
592 | t->type_name = allocAndCopy(name); |
593 | t->type = NONE; |
594 | t->fmt = NULL; |
908f42fa |
595 | table_insert(named_types,t->type_name,t); |
596 | // table_insert(named_types,allocAndCopy(name),t); |
6cd62ccf |
597 | } |
598 | return t; |
599 | } |
600 | |
601 | /***************************************************************************** |
602 | *Function name |
603 | * parseTypeDefinition : get type information from type definition |
604 | *Input params |
605 | * in : input file handle |
963b5f2d |
606 | * unnamed_types : array of unamed types |
607 | * named_types : array of named types |
6cd62ccf |
608 | *****************************************************************************/ |
609 | |
610 | void parseTypeDefinition(parse_file * in, sequence * unnamed_types, |
611 | table * named_types) |
612 | { |
613 | char *token; |
614 | type_descriptor *t; |
615 | |
963b5f2d |
616 | token = getNameAttribute(in); |
6cd62ccf |
617 | t = find_named_type(token, named_types); |
6cd62ccf |
618 | |
619 | if(t->type != NONE) in->error(in,"redefinition of named type"); |
963b5f2d |
620 | getRAnglebracket(in); //<type name=type_name> |
621 | getLAnglebracket(in); //<struct> |
622 | token = getName(in); |
623 | if(strcmp("struct",token))in->error(in,"not a valid type definition"); |
624 | ungetToken(in); |
6cd62ccf |
625 | parseType(in,t, unnamed_types, named_types); |
963b5f2d |
626 | |
627 | //</type> |
628 | getLAnglebracket(in); |
629 | getForwardslash(in); |
630 | token = getName(in); |
631 | if(strcmp("type",token))in->error(in,"not a valid type definition"); |
632 | getRAnglebracket(in); //</type> |
6cd62ccf |
633 | } |
634 | |
635 | /************************************************************************** |
636 | * Function : |
963b5f2d |
637 | * getComa, getName, getNumber, getEqual |
6cd62ccf |
638 | * Description : |
639 | * Read a token from the input file, check its type, return it scontent. |
640 | * |
641 | * Parameters : |
642 | * in , input file handle. |
643 | * |
644 | * Return values : |
645 | * address of token content. |
646 | * |
647 | **************************************************************************/ |
648 | |
649 | char *getName(parse_file * in) |
650 | { |
651 | char *token; |
652 | |
653 | token = getToken(in); |
654 | if(in->type != NAME) in->error(in,"Name token was expected"); |
655 | return token; |
656 | } |
657 | |
658 | int getNumber(parse_file * in) |
659 | { |
660 | char *token; |
661 | |
662 | token = getToken(in); |
663 | if(in->type != NUMBER) in->error(in, "Number token was expected"); |
664 | return atoi(token); |
665 | } |
666 | |
963b5f2d |
667 | char *getForwardslash(parse_file * in) |
6cd62ccf |
668 | { |
669 | char *token; |
670 | |
671 | token = getToken(in); |
963b5f2d |
672 | if(in->type != FORWARDSLASH) in->error(in, "forward slash token was expected"); |
6cd62ccf |
673 | return token; |
674 | } |
675 | |
963b5f2d |
676 | char *getLAnglebracket(parse_file * in) |
6cd62ccf |
677 | { |
678 | char *token; |
679 | |
680 | token = getToken(in); |
963b5f2d |
681 | if(in->type != LANGLEBRACKET) in->error(in, "Left angle bracket was expected"); |
6cd62ccf |
682 | return token; |
683 | } |
684 | |
963b5f2d |
685 | char *getRAnglebracket(parse_file * in) |
6cd62ccf |
686 | { |
687 | char *token; |
688 | |
689 | token = getToken(in); |
963b5f2d |
690 | if(in->type != RANGLEBRACKET) in->error(in, "Right angle bracket was expected"); |
6cd62ccf |
691 | return token; |
692 | } |
693 | |
694 | char *getQuotedString(parse_file * in) |
695 | { |
696 | char *token; |
697 | |
698 | token = getToken(in); |
699 | if(in->type != QUOTEDSTRING) in->error(in, "quoted string was expected"); |
700 | return token; |
701 | } |
702 | |
963b5f2d |
703 | char * getEqual(parse_file *in) |
6cd62ccf |
704 | { |
705 | char *token; |
706 | |
707 | token = getToken(in); |
963b5f2d |
708 | if(in->type != EQUAL) in->error(in, "equal was expected"); |
6cd62ccf |
709 | return token; |
710 | } |
711 | |
963b5f2d |
712 | char seekNextChar(parse_file *in) |
6cd62ccf |
713 | { |
963b5f2d |
714 | char car; |
715 | while((car = getc(in->fp)) != EOF) { |
716 | if(!isspace(car)){ |
717 | ungetc(car,in->fp); |
718 | return car; |
719 | } |
720 | } |
721 | return EOF; |
6cd62ccf |
722 | } |
723 | |
724 | /****************************************************************** |
725 | * Function : |
726 | * getToken, ungetToken |
727 | * Description : |
728 | * Read a token from the input file and return its type and content. |
729 | * Line numbers are accounted for and whitespace/comments are skipped. |
730 | * |
731 | * Parameters : |
732 | * in, input file handle. |
733 | * |
734 | * Return values : |
735 | * address of token content. |
736 | * |
737 | ******************************************************************/ |
738 | |
739 | void ungetToken(parse_file * in) |
740 | { |
741 | in->unget = 1; |
742 | } |
743 | |
744 | char *getToken(parse_file * in) |
745 | { |
746 | FILE *fp = in->fp; |
747 | char car, car1; |
748 | int pos = 0, escaped; |
749 | |
750 | if(in->unget == 1) { |
751 | in->unget = 0; |
752 | return in->buffer; |
753 | } |
754 | |
755 | /* skip whitespace and comments */ |
756 | |
757 | while((car = getc(fp)) != EOF) { |
758 | if(car == '/') { |
759 | car1 = getc(fp); |
760 | if(car1 == '*') skipComment(in); |
761 | else if(car1 == '/') skipEOL(in); |
762 | else { |
763 | car1 = ungetc(car1,fp); |
764 | break; |
765 | } |
766 | } |
767 | else if(car == '\n') in->lineno++; |
768 | else if(!isspace(car)) break; |
769 | } |
770 | |
771 | switch(car) { |
772 | case EOF: |
773 | in->type = ENDFILE; |
774 | break; |
963b5f2d |
775 | case '/': |
776 | in->type = FORWARDSLASH; |
6cd62ccf |
777 | in->buffer[pos] = car; |
778 | pos++; |
779 | break; |
963b5f2d |
780 | case '<': |
781 | in->type = LANGLEBRACKET; |
6cd62ccf |
782 | in->buffer[pos] = car; |
783 | pos++; |
784 | break; |
963b5f2d |
785 | case '>': |
786 | in->type = RANGLEBRACKET; |
6cd62ccf |
787 | in->buffer[pos] = car; |
788 | pos++; |
789 | break; |
790 | case '=': |
791 | in->type = EQUAL; |
792 | in->buffer[pos] = car; |
793 | pos++; |
794 | break; |
795 | case '"': |
796 | escaped = 0; |
797 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
798 | if(car == '\\' && escaped == 0) { |
799 | in->buffer[pos] = car; |
800 | pos++; |
801 | escaped = 1; |
802 | continue; |
803 | } |
804 | if(car == '"' && escaped == 0) break; |
805 | if(car == '\n' && escaped == 0) { |
806 | in->error(in, "non escaped newline inside quoted string"); |
807 | } |
808 | if(car == '\n') in->lineno++; |
809 | in->buffer[pos] = car; |
810 | pos++; |
811 | escaped = 0; |
812 | } |
813 | if(car == EOF) in->error(in,"no ending quotemark"); |
814 | if(pos == BUFFER_SIZE) in->error(in, "quoted string token too large"); |
815 | in->type = QUOTEDSTRING; |
816 | break; |
817 | default: |
818 | if(isdigit(car)) { |
819 | in->buffer[pos] = car; |
820 | pos++; |
821 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
822 | if(!isdigit(car)) { |
823 | ungetc(car,fp); |
824 | break; |
825 | } |
826 | in->buffer[pos] = car; |
827 | pos++; |
828 | } |
829 | if(car == EOF) ungetc(car,fp); |
830 | if(pos == BUFFER_SIZE) in->error(in, "number token too large"); |
831 | in->type = NUMBER; |
832 | } |
fc063e40 |
833 | else if(ltt_isalpha(car)) { |
6cd62ccf |
834 | in->buffer[0] = car; |
835 | pos = 1; |
836 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
fc063e40 |
837 | if(!ltt_isalnum(car)) { |
6cd62ccf |
838 | ungetc(car,fp); |
839 | break; |
840 | } |
841 | in->buffer[pos] = car; |
842 | pos++; |
843 | } |
844 | if(car == EOF) ungetc(car,fp); |
845 | if(pos == BUFFER_SIZE) in->error(in, "name token too large"); |
846 | in->type = NAME; |
847 | } |
848 | else in->error(in, "invalid character, unrecognized token"); |
849 | } |
850 | in->buffer[pos] = 0; |
851 | return in->buffer; |
852 | } |
853 | |
854 | void skipComment(parse_file * in) |
855 | { |
856 | char car; |
857 | while((car = getc(in->fp)) != EOF) { |
858 | if(car == '\n') in->lineno++; |
859 | else if(car == '*') { |
860 | car = getc(in->fp); |
861 | if(car ==EOF) break; |
862 | if(car == '/') return; |
863 | ungetc(car,in->fp); |
864 | } |
865 | } |
866 | if(car == EOF) in->error(in,"comment begining with '/*' has no ending '*/'"); |
867 | } |
868 | |
869 | void skipEOL(parse_file * in) |
870 | { |
871 | char car; |
872 | while((car = getc(in->fp)) != EOF) { |
873 | if(car == '\n') { |
874 | ungetc(car,in->fp); |
875 | break; |
876 | } |
877 | } |
878 | if(car == EOF)ungetc(car, in->fp); |
879 | } |
880 | |
6cd62ccf |
881 | /***************************************************************************** |
882 | *Function name |
883 | * checkNamedTypesImplemented : check if all named types have definition |
fc063e40 |
884 | * returns -1 on error, 0 if ok |
6cd62ccf |
885 | ****************************************************************************/ |
886 | |
fc063e40 |
887 | int checkNamedTypesImplemented(table * named_types) |
6cd62ccf |
888 | { |
889 | type_descriptor *t; |
890 | int pos; |
891 | char str[256]; |
892 | |
893 | for(pos = 0 ; pos < named_types->values.position; pos++) { |
894 | t = (type_descriptor *) named_types->values.array[pos]; |
895 | if(t->type == NONE){ |
fc063e40 |
896 | sprintf(str,"named type '%s' has no definition", |
897 | (char*)named_types->keys.array[pos]); |
898 | error_callback(NULL,str); |
899 | return -1; |
6cd62ccf |
900 | } |
901 | } |
fc063e40 |
902 | return 0; |
6cd62ccf |
903 | } |
904 | |
905 | |
906 | /***************************************************************************** |
907 | *Function name |
908 | * generateChecksum : generate checksum for the facility |
909 | *Input Params |
910 | * facName : name of facility |
911 | *Output Params |
912 | * checksum : checksum for the facility |
913 | ****************************************************************************/ |
914 | |
fc063e40 |
915 | int generateChecksum(char* facName, unsigned long * checksum, sequence * events) |
6cd62ccf |
916 | { |
917 | unsigned long crc ; |
963b5f2d |
918 | int pos; |
8d1e6362 |
919 | event_t * ev; |
6cd62ccf |
920 | char str[256]; |
921 | |
922 | crc = crc32(facName); |
923 | for(pos = 0; pos < events->position; pos++){ |
8d1e6362 |
924 | ev = (event_t *)(events->array[pos]); |
6cd62ccf |
925 | crc = partial_crc32(ev->name,crc); |
963b5f2d |
926 | if(!ev->type) continue; //event without type |
6cd62ccf |
927 | if(ev->type->type != STRUCT){ |
928 | sprintf(str,"event '%s' has a type other than STRUCT",ev->name); |
929 | error_callback(NULL, str); |
fc063e40 |
930 | return -1; |
6cd62ccf |
931 | } |
963b5f2d |
932 | crc = getTypeChecksum(crc, ev->type); |
6cd62ccf |
933 | } |
934 | *checksum = crc; |
fc063e40 |
935 | return 0; |
6cd62ccf |
936 | } |
937 | |
938 | /***************************************************************************** |
939 | *Function name |
940 | * getTypeChecksum : generate checksum by type info |
941 | *Input Params |
942 | * crc : checksum generated so far |
943 | * type : type descriptor containing type info |
944 | *Return value |
945 | * unsigned long : checksum |
946 | *****************************************************************************/ |
947 | |
963b5f2d |
948 | unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type) |
6cd62ccf |
949 | { |
950 | unsigned long crc = aCrc; |
951 | char * str = NULL, buf[16]; |
963b5f2d |
952 | int flag = 0, pos; |
8d1e6362 |
953 | type_fields * fld; |
6cd62ccf |
954 | |
955 | switch(type->type){ |
956 | case INT: |
957 | str = intOutputTypes[type->size]; |
958 | break; |
959 | case UINT: |
960 | str = uintOutputTypes[type->size]; |
961 | break; |
962 | case FLOAT: |
963 | str = floatOutputTypes[type->size]; |
964 | break; |
965 | case STRING: |
966 | str = allocAndCopy("string"); |
967 | flag = 1; |
968 | break; |
969 | case ENUM: |
970 | str = appendString("enum ", uintOutputTypes[type->size]); |
971 | flag = 1; |
972 | break; |
973 | case ARRAY: |
8d1e6362 |
974 | sprintf(buf,"%d",type->size); |
6cd62ccf |
975 | str = appendString("array ",buf); |
976 | flag = 1; |
977 | break; |
978 | case SEQUENCE: |
8d1e6362 |
979 | sprintf(buf,"%d",type->size); |
6cd62ccf |
980 | str = appendString("sequence ",buf); |
981 | flag = 1; |
982 | break; |
983 | case STRUCT: |
984 | str = allocAndCopy("struct"); |
985 | flag = 1; |
986 | break; |
963b5f2d |
987 | case UNION: |
988 | str = allocAndCopy("union"); |
989 | flag = 1; |
990 | break; |
6cd62ccf |
991 | default: |
992 | error_callback(NULL, "named type has no definition"); |
993 | break; |
994 | } |
995 | |
996 | crc = partial_crc32(str,crc); |
997 | if(flag) free(str); |
998 | |
999 | if(type->fmt) crc = partial_crc32(type->fmt,crc); |
1000 | |
1001 | if(type->type == ARRAY || type->type == SEQUENCE){ |
963b5f2d |
1002 | crc = getTypeChecksum(crc,type->nested_type); |
1003 | }else if(type->type == STRUCT || type->type == UNION){ |
1004 | for(pos =0; pos < type->fields.position; pos++){ |
8d1e6362 |
1005 | fld = (type_fields *) type->fields.array[pos]; |
963b5f2d |
1006 | crc = partial_crc32(fld->name,crc); |
1007 | crc = getTypeChecksum(crc, fld->type); |
1008 | } |
6cd62ccf |
1009 | }else if(type->type == ENUM){ |
1010 | for(pos = 0; pos < type->labels.position; pos++) |
963b5f2d |
1011 | crc = partial_crc32((char*)type->labels.array[pos],crc); |
6cd62ccf |
1012 | } |
1013 | |
1014 | return crc; |
1015 | } |
1016 | |
1017 | |
1018 | /* Event type descriptors */ |
1019 | void freeType(type_descriptor * tp) |
1020 | { |
1021 | int pos2; |
8d1e6362 |
1022 | type_fields *f; |
6cd62ccf |
1023 | |
1024 | if(tp->fmt != NULL) free(tp->fmt); |
1025 | if(tp->type == ENUM) { |
1026 | for(pos2 = 0; pos2 < tp->labels.position; pos2++) { |
1027 | free(tp->labels.array[pos2]); |
1028 | } |
1029 | sequence_dispose(&(tp->labels)); |
1030 | } |
1031 | if(tp->type == STRUCT) { |
1032 | for(pos2 = 0; pos2 < tp->fields.position; pos2++) { |
8d1e6362 |
1033 | f = (type_fields *) tp->fields.array[pos2]; |
6cd62ccf |
1034 | free(f->name); |
1035 | free(f->description); |
1036 | free(f); |
1037 | } |
1038 | sequence_dispose(&(tp->fields)); |
1039 | } |
1040 | } |
1041 | |
1042 | void freeNamedType(table * t) |
1043 | { |
1044 | int pos; |
1045 | type_descriptor * td; |
1046 | |
1047 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1048 | free((char *)t->keys.array[pos]); |
1049 | td = (type_descriptor*)t->values.array[pos]; |
1050 | freeType(td); |
1051 | free(td); |
1052 | } |
1053 | } |
1054 | |
1055 | void freeTypes(sequence *t) |
1056 | { |
8d1e6362 |
1057 | int pos; |
6cd62ccf |
1058 | type_descriptor *tp; |
6cd62ccf |
1059 | |
1060 | for(pos = 0 ; pos < t->position; pos++) { |
1061 | tp = (type_descriptor *)t->array[pos]; |
1062 | freeType(tp); |
1063 | free(tp); |
1064 | } |
1065 | } |
1066 | |
1067 | void freeEvents(sequence *t) |
1068 | { |
1069 | int pos; |
8d1e6362 |
1070 | event_t *ev; |
6cd62ccf |
1071 | |
1072 | for(pos = 0 ; pos < t->position; pos++) { |
8d1e6362 |
1073 | ev = (event_t *) t->array[pos]; |
6cd62ccf |
1074 | free(ev->name); |
1075 | free(ev->description); |
1076 | free(ev); |
1077 | } |
1078 | |
1079 | } |
1080 | |
1081 | |
1082 | /* Extensible array */ |
1083 | |
1084 | void sequence_init(sequence *t) |
1085 | { |
1086 | t->size = 10; |
1087 | t->position = 0; |
1088 | t->array = (void **)memAlloc(t->size * sizeof(void *)); |
1089 | } |
1090 | |
1091 | void sequence_dispose(sequence *t) |
1092 | { |
1093 | t->size = 0; |
1094 | free(t->array); |
1095 | t->array = NULL; |
1096 | } |
1097 | |
1098 | void sequence_push(sequence *t, void *elem) |
1099 | { |
1100 | void **tmp; |
1101 | |
1102 | if(t->position >= t->size) { |
1103 | tmp = t->array; |
1104 | t->array = (void **)memAlloc(t->size * 2 * sizeof(void *)); |
1105 | memcpy(t->array, tmp, t->size * sizeof(void *)); |
1106 | t->size = t->size * 2; |
1107 | free(tmp); |
1108 | } |
1109 | t->array[t->position] = elem; |
1110 | t->position++; |
1111 | } |
1112 | |
1113 | void *sequence_pop(sequence *t) |
1114 | { |
1115 | return t->array[t->position--]; |
1116 | } |
1117 | |
1118 | |
1119 | /* Hash table API, implementation is just linear search for now */ |
1120 | |
1121 | void table_init(table *t) |
1122 | { |
1123 | sequence_init(&(t->keys)); |
1124 | sequence_init(&(t->values)); |
1125 | } |
1126 | |
1127 | void table_dispose(table *t) |
1128 | { |
1129 | sequence_dispose(&(t->keys)); |
1130 | sequence_dispose(&(t->values)); |
1131 | } |
1132 | |
1133 | void table_insert(table *t, char *key, void *value) |
1134 | { |
1135 | sequence_push(&(t->keys),key); |
1136 | sequence_push(&(t->values),value); |
1137 | } |
1138 | |
1139 | void *table_find(table *t, char *key) |
1140 | { |
1141 | int pos; |
1142 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1143 | if(strcmp((char *)key,(char *)t->keys.array[pos]) == 0) |
1144 | return(t->values.array[pos]); |
1145 | } |
1146 | return NULL; |
1147 | } |
1148 | |
1149 | void table_insert_int(table *t, int *key, void *value) |
1150 | { |
1151 | sequence_push(&(t->keys),key); |
1152 | sequence_push(&(t->values),value); |
1153 | } |
1154 | |
1155 | void *table_find_int(table *t, int *key) |
1156 | { |
1157 | int pos; |
1158 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1159 | if(*key == *(int *)t->keys.array[pos]) |
1160 | return(t->values.array[pos]); |
1161 | } |
1162 | return NULL; |
1163 | } |
1164 | |
1165 | |
1166 | /* Concatenate strings */ |
1167 | |
1168 | char *appendString(char *s, char *suffix) |
1169 | { |
1170 | char *tmp; |
963b5f2d |
1171 | if(suffix == NULL) return s; |
6cd62ccf |
1172 | |
1173 | tmp = (char *)memAlloc(strlen(s) + strlen(suffix) + 1); |
1174 | strcpy(tmp,s); |
1175 | strcat(tmp,suffix); |
1176 | return tmp; |
1177 | } |
1178 | |
1179 | |