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> |
0f7f40c1 |
40 | #include <linux/errno.h> |
41 | #include <glib.h> |
6cd62ccf |
42 | |
43 | |
44 | #include "parser.h" |
45 | |
46 | |
fc063e40 |
47 | static int ltt_isalpha(char c) |
48 | { |
49 | int i,j; |
50 | if(c == '_')return 1; |
51 | i = c - 'a'; |
52 | j = c - 'A'; |
53 | if((i>=0 && i<26) || (j>=0 && j<26)) return 1; |
54 | return 0; |
55 | } |
56 | |
57 | static int ltt_isalnum(char c) |
58 | { |
59 | return (ltt_isalpha(c) || isdigit(c)); |
60 | } |
61 | |
6cd62ccf |
62 | /***************************************************************************** |
63 | *Function name |
64 | * getSize : translate from string to integer |
65 | *Input params |
66 | * in : input file handle |
67 | *Return values |
68 | * size |
69 | *****************************************************************************/ |
70 | |
71 | int getSize(parse_file *in) |
72 | { |
73 | char *token; |
74 | |
75 | token = getToken(in); |
76 | if(in->type == NUMBER) { |
77 | if(strcmp(token,"1") == 0) return 0; |
78 | else if(strcmp(token,"2") == 0) return 1; |
79 | else if(strcmp(token,"4") == 0) return 2; |
80 | else if(strcmp(token,"8") == 0) return 3; |
81 | } |
82 | else if(in->type == NAME) { |
83 | if(strcmp(token,"short") == 0) return 4; |
84 | else if(strcmp(token,"medium") == 0) return 5; |
85 | else if(strcmp(token,"long") == 0) return 6; |
86 | } |
87 | in->error(in,"incorrect size specification"); |
88 | return -1; |
89 | } |
90 | |
91 | /***************************************************************************** |
92 | *Function name |
93 | * error_callback : print out error info |
94 | *Input params |
95 | * in : input file handle |
96 | * msg : message to be printed |
97 | ****************************************************************************/ |
98 | |
99 | void error_callback(parse_file *in, char *msg) |
100 | { |
101 | if(in) |
102 | printf("Error in file %s, line %d: %s\n", in->name, in->lineno, msg); |
103 | else |
104 | printf("%s\n",msg); |
6cd62ccf |
105 | } |
106 | |
107 | /***************************************************************************** |
108 | *Function name |
109 | * memAlloc : allocate memory |
110 | *Input params |
111 | * size : required memory size |
112 | *return value |
113 | * void * : pointer to allocate memory or NULL |
114 | ****************************************************************************/ |
115 | |
116 | void * memAlloc(int size) |
117 | { |
963b5f2d |
118 | void * addr; |
119 | if(size == 0) return NULL; |
120 | addr = malloc(size); |
6cd62ccf |
121 | if(!addr){ |
122 | printf("Failed to allocate memory"); |
123 | exit(1); |
124 | } |
125 | return addr; |
126 | } |
127 | |
128 | /***************************************************************************** |
129 | *Function name |
130 | * allocAndCopy : allocate memory and initialize it |
131 | *Input params |
132 | * str : string to be put in memory |
133 | *return value |
134 | * char * : pointer to allocate memory or NULL |
135 | ****************************************************************************/ |
136 | |
137 | char *allocAndCopy(char *str) |
138 | { |
963b5f2d |
139 | char * addr; |
140 | if(str == NULL) return NULL; |
141 | addr = (char *)memAlloc(strlen(str)+1); |
6cd62ccf |
142 | strcpy(addr,str); |
143 | return addr; |
144 | } |
145 | |
963b5f2d |
146 | /************************************************************************** |
147 | * Function : |
148 | * getNameAttribute,getFormatAttribute,getSizeAttribute,getValueAttribute |
149 | * getValueStrAttribute |
150 | * Description : |
151 | * Read the attribute from the input file. |
152 | * |
153 | * Parameters : |
154 | * in , input file handle. |
155 | * |
156 | * Return values : |
157 | * address of the attribute. |
158 | * |
159 | **************************************************************************/ |
160 | |
161 | char * getNameAttribute(parse_file *in) |
162 | { |
163 | char * token, car; |
164 | token = getName(in); |
165 | if(strcmp("name",token))in->error(in,"name was expected"); |
166 | getEqual(in); |
167 | |
168 | car = seekNextChar(in); |
169 | if(car == EOF)in->error(in,"name was expected"); |
170 | else if(car == '\"')token = getQuotedString(in); |
171 | else token = getName(in); |
172 | return token; |
173 | } |
174 | |
175 | char * getFormatAttribute(parse_file *in) |
176 | { |
177 | char * token; |
178 | |
179 | //format is an option |
180 | token = getToken(in); |
bf410332 |
181 | if(strcmp("/",token) == 0 || strcmp(">",token) == 0){ |
963b5f2d |
182 | ungetToken(in); |
183 | return NULL; |
184 | } |
185 | |
186 | if(strcmp("format",token))in->error(in,"format was expected"); |
187 | getEqual(in); |
188 | token = getQuotedString(in); |
189 | return token; |
190 | } |
191 | |
192 | int getSizeAttribute(parse_file *in) |
193 | { |
8d1e6362 |
194 | /* skip name and equal */ |
963b5f2d |
195 | getName(in); |
196 | getEqual(in); |
197 | |
198 | return getSize(in); |
199 | } |
200 | |
201 | int getValueAttribute(parse_file *in) |
202 | { |
8d1e6362 |
203 | /* skip name and equal */ |
963b5f2d |
204 | getName(in); |
205 | getEqual(in); |
206 | |
207 | return getNumber(in); |
208 | } |
209 | |
210 | //for <label name=label_name value=n/>, value is an option |
211 | char * getValueStrAttribute(parse_file *in) |
212 | { |
213 | char * token; |
214 | |
215 | token = getToken(in); |
216 | if(strcmp("/",token) == 0){ |
217 | ungetToken(in); |
218 | return NULL; |
219 | } |
220 | |
221 | if(strcmp("value",token))in->error(in,"value was expected"); |
222 | getEqual(in); |
223 | token = getToken(in); |
224 | if(in->type != NUMBER) in->error(in,"number was expected"); |
225 | return token; |
226 | } |
227 | |
228 | char * getDescription(parse_file *in) |
229 | { |
230 | long int pos; |
231 | char * token, car, *str; |
232 | |
233 | pos = ftell(in->fp); |
234 | |
235 | getLAnglebracket(in); |
236 | token = getName(in); |
237 | if(strcmp("description",token)){ |
238 | fseek(in->fp, pos, SEEK_SET); |
239 | return NULL; |
240 | } |
241 | |
242 | getRAnglebracket(in); |
243 | |
244 | pos = 0; |
245 | while((car = getc(in->fp)) != EOF) { |
246 | if(car == '<') break; |
247 | if(car == '\0') continue; |
248 | in->buffer[pos] = car; |
249 | pos++; |
250 | } |
251 | if(car == EOF)in->error(in,"not a valid description"); |
252 | in->buffer[pos] = '\0'; |
253 | |
254 | str = allocAndCopy(in->buffer); |
255 | |
256 | getForwardslash(in); |
257 | token = getName(in); |
258 | if(strcmp("description", token))in->error(in,"not a valid description"); |
259 | getRAnglebracket(in); |
260 | |
261 | return str; |
262 | } |
263 | |
264 | /***************************************************************************** |
265 | *Function name |
266 | * parseFacility : generate event list |
267 | *Input params |
268 | * in : input file handle |
269 | * fac : empty facility |
270 | *Output params |
271 | * fac : facility filled with event list |
272 | ****************************************************************************/ |
273 | |
8d1e6362 |
274 | void parseFacility(parse_file *in, facility_t * fac) |
963b5f2d |
275 | { |
276 | char * token; |
8d1e6362 |
277 | event_t *ev; |
963b5f2d |
278 | |
279 | fac->name = allocAndCopy(getNameAttribute(in)); |
280 | getRAnglebracket(in); |
281 | |
ed9d56bd |
282 | fac->description = getDescription(in); |
963b5f2d |
283 | |
284 | while(1){ |
285 | getLAnglebracket(in); |
286 | |
287 | token = getToken(in); |
288 | if(in->type == ENDFILE) |
289 | in->error(in,"the definition of the facility is not finished"); |
290 | |
291 | if(strcmp("event",token) == 0){ |
8d1e6362 |
292 | ev = (event_t*) memAlloc(sizeof(event_t)); |
963b5f2d |
293 | sequence_push(&(fac->events),ev); |
294 | parseEvent(in,ev, &(fac->unnamed_types), &(fac->named_types)); |
295 | }else if(strcmp("type",token) == 0){ |
296 | parseTypeDefinition(in, &(fac->unnamed_types), &(fac->named_types)); |
297 | }else if(in->type == FORWARDSLASH){ |
298 | break; |
299 | }else in->error(in,"event or type token expected\n"); |
300 | } |
301 | |
302 | token = getName(in); |
303 | if(strcmp("facility",token)) in->error(in,"not the end of the facility"); |
304 | getRAnglebracket(in); //</facility> |
305 | } |
6cd62ccf |
306 | |
307 | /***************************************************************************** |
308 | *Function name |
309 | * parseEvent : generate event from event definition |
310 | *Input params |
311 | * in : input file handle |
312 | * ev : new event |
963b5f2d |
313 | * unnamed_types : array of unamed types |
314 | * named_types : array of named types |
6cd62ccf |
315 | *Output params |
316 | * ev : new event (parameters are passed to it) |
317 | ****************************************************************************/ |
318 | |
8d1e6362 |
319 | void parseEvent(parse_file *in, event_t * ev, sequence * unnamed_types, |
6cd62ccf |
320 | table * named_types) |
321 | { |
322 | char *token; |
6cd62ccf |
323 | |
963b5f2d |
324 | //<event name=eventtype_name> |
325 | ev->name = allocAndCopy(getNameAttribute(in)); |
326 | getRAnglebracket(in); |
6cd62ccf |
327 | |
963b5f2d |
328 | //<description>...</descriptio> |
ed9d56bd |
329 | ev->description = getDescription(in); |
6cd62ccf |
330 | |
963b5f2d |
331 | //event can have STRUCT, TYPEREF or NOTHING |
332 | getLAnglebracket(in); |
6cd62ccf |
333 | |
963b5f2d |
334 | token = getToken(in); |
335 | if(in->type == FORWARDSLASH){ //</event> NOTHING |
336 | ev->type = NULL; |
337 | }else if(in->type == NAME){ |
338 | if(strcmp("struct",token)==0 || strcmp("typeref",token)==0){ |
339 | ungetToken(in); |
340 | ev->type = parseType(in,NULL, unnamed_types, named_types); |
341 | if(ev->type->type != STRUCT && ev->type->type != NONE) |
342 | in->error(in,"type must be a struct"); |
343 | }else in->error(in, "not a valid type"); |
344 | |
345 | getLAnglebracket(in); |
346 | getForwardslash(in); |
6cd62ccf |
347 | }else in->error(in,"not a struct type"); |
348 | |
963b5f2d |
349 | token = getName(in); |
350 | if(strcmp("event",token))in->error(in,"not an event definition"); |
351 | getRAnglebracket(in); //</event> |
6cd62ccf |
352 | } |
353 | |
354 | /***************************************************************************** |
355 | *Function name |
963b5f2d |
356 | * parseField : get field infomation from buffer |
6cd62ccf |
357 | *Input params |
963b5f2d |
358 | * in : input file handle |
359 | * t : type descriptor |
360 | * unnamed_types : array of unamed types |
361 | * named_types : array of named types |
6cd62ccf |
362 | ****************************************************************************/ |
363 | |
364 | void parseFields(parse_file *in, type_descriptor *t, sequence * unnamed_types, |
365 | table * named_types) |
366 | { |
367 | char * token; |
8d1e6362 |
368 | type_fields *f; |
6cd62ccf |
369 | |
8d1e6362 |
370 | f = (type_fields *)memAlloc(sizeof(type_fields)); |
963b5f2d |
371 | sequence_push(&(t->fields),f); |
6cd62ccf |
372 | |
963b5f2d |
373 | //<field name=field_name> <description> <type> </field> |
374 | f->name = allocAndCopy(getNameAttribute(in)); |
375 | getRAnglebracket(in); |
376 | |
ed9d56bd |
377 | f->description = getDescription(in); |
963b5f2d |
378 | |
379 | //<int size=...> |
380 | getLAnglebracket(in); |
381 | f->type = parseType(in,NULL, unnamed_types, named_types); |
6cd62ccf |
382 | |
963b5f2d |
383 | getLAnglebracket(in); |
384 | getForwardslash(in); |
385 | token = getName(in); |
386 | if(strcmp("field",token))in->error(in,"not a valid field definition"); |
387 | getRAnglebracket(in); //</field> |
6cd62ccf |
388 | } |
389 | |
390 | |
391 | /***************************************************************************** |
392 | *Function name |
393 | * parseType : get type information, type can be : |
394 | * Primitive: |
395 | * int(size,fmt); uint(size,fmt); float(size,fmt); |
396 | * string(fmt); enum(size,fmt,(label1,label2...)) |
397 | * Compound: |
398 | * array(arraySize, type); sequence(lengthSize,type) |
399 | * struct(field(name,type,description)...) |
400 | * type name: |
401 | * type(name,type) |
402 | *Input params |
403 | * in : input file handle |
404 | * inType : a type descriptor |
963b5f2d |
405 | * unnamed_types : array of unamed types |
406 | * named_types : array of named types |
6cd62ccf |
407 | *Return values |
408 | * type_descriptor* : a type descriptor |
409 | ****************************************************************************/ |
410 | |
411 | type_descriptor *parseType(parse_file *in, type_descriptor *inType, |
412 | sequence * unnamed_types, table * named_types) |
413 | { |
963b5f2d |
414 | char *token; |
6cd62ccf |
415 | type_descriptor *t; |
416 | |
417 | if(inType == NULL) { |
418 | t = (type_descriptor *) memAlloc(sizeof(type_descriptor)); |
419 | t->type_name = NULL; |
420 | t->type = NONE; |
421 | t->fmt = NULL; |
422 | sequence_push(unnamed_types,t); |
423 | } |
424 | else t = inType; |
425 | |
426 | token = getName(in); |
427 | |
428 | if(strcmp(token,"struct") == 0) { |
429 | t->type = STRUCT; |
963b5f2d |
430 | getRAnglebracket(in); //<struct> |
431 | getLAnglebracket(in); //<field name=..> |
432 | token = getToken(in); |
433 | sequence_init(&(t->fields)); |
434 | while(strcmp("field",token) == 0){ |
435 | parseFields(in,t, unnamed_types, named_types); |
436 | |
437 | //next field |
438 | getLAnglebracket(in); |
439 | token = getToken(in); |
440 | } |
441 | if(strcmp("/",token))in->error(in,"not a valid structure definition"); |
442 | token = getName(in); |
443 | if(strcmp("struct",token)!=0) |
444 | in->error(in,"not a valid structure definition"); |
445 | getRAnglebracket(in); //</struct> |
446 | } |
447 | else if(strcmp(token,"union") == 0) { |
448 | t->type = UNION; |
449 | t->size = getSizeAttribute(in); |
450 | getRAnglebracket(in); //<union typecodesize=isize> |
451 | |
452 | getLAnglebracket(in); //<field name=..> |
453 | token = getToken(in); |
454 | sequence_init(&(t->fields)); |
455 | while(strcmp("field",token) == 0){ |
456 | parseFields(in,t, unnamed_types, named_types); |
457 | |
458 | //next field |
459 | getLAnglebracket(in); |
460 | token = getToken(in); |
461 | } |
462 | if(strcmp("/",token))in->error(in,"not a valid union definition"); |
463 | token = getName(in); |
464 | if(strcmp("union",token)!=0) |
465 | in->error(in,"not a valid union definition"); |
466 | getRAnglebracket(in); //</union> |
6cd62ccf |
467 | } |
468 | else if(strcmp(token,"array") == 0) { |
469 | t->type = ARRAY; |
963b5f2d |
470 | t->size = getValueAttribute(in); |
471 | getRAnglebracket(in); //<array size=n> |
472 | |
473 | getLAnglebracket(in); //<type struct> |
6cd62ccf |
474 | t->nested_type = parseType(in,NULL, unnamed_types, named_types); |
963b5f2d |
475 | |
476 | getLAnglebracket(in); //</array> |
477 | getForwardslash(in); |
478 | token = getName(in); |
479 | if(strcmp("array",token))in->error(in,"not a valid array definition"); |
480 | getRAnglebracket(in); //</array> |
6cd62ccf |
481 | } |
482 | else if(strcmp(token,"sequence") == 0) { |
483 | t->type = SEQUENCE; |
963b5f2d |
484 | t->size = getSizeAttribute(in); |
485 | getRAnglebracket(in); //<array lengthsize=isize> |
486 | |
487 | getLAnglebracket(in); //<type struct> |
6cd62ccf |
488 | t->nested_type = parseType(in,NULL, unnamed_types, named_types); |
963b5f2d |
489 | |
490 | getLAnglebracket(in); //</sequence> |
491 | getForwardslash(in); |
492 | token = getName(in); |
493 | if(strcmp("sequence",token))in->error(in,"not a valid sequence definition"); |
494 | getRAnglebracket(in); //</sequence> |
6cd62ccf |
495 | } |
496 | else if(strcmp(token,"enum") == 0) { |
963b5f2d |
497 | char * str, *str1; |
6cd62ccf |
498 | t->type = ENUM; |
499 | sequence_init(&(t->labels)); |
963b5f2d |
500 | t->size = getSizeAttribute(in); |
501 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
502 | getRAnglebracket(in); |
503 | |
504 | //<label name=label1 value=n/> |
505 | getLAnglebracket(in); |
506 | token = getToken(in); //"label" or "/" |
507 | while(strcmp("label",token) == 0){ |
508 | str = allocAndCopy(getNameAttribute(in)); |
509 | token = getValueStrAttribute(in); |
510 | if(token){ |
511 | str1 = appendString(str,"="); |
512 | free(str); |
513 | str = appendString(str1,token); |
514 | free(str1); |
becaca6d |
515 | sequence_push(&(t->labels),str); |
963b5f2d |
516 | }else |
becaca6d |
517 | sequence_push(&(t->labels),str); |
963b5f2d |
518 | |
519 | getForwardslash(in); |
520 | getRAnglebracket(in); |
521 | |
522 | //next label definition |
523 | getLAnglebracket(in); |
524 | token = getToken(in); //"label" or "/" |
525 | } |
526 | if(strcmp("/",token))in->error(in, "not a valid enum definition"); |
527 | token = getName(in); |
528 | if(strcmp("enum",token))in->error(in, "not a valid enum definition"); |
529 | getRAnglebracket(in); //</label> |
6cd62ccf |
530 | } |
531 | else if(strcmp(token,"int") == 0) { |
532 | t->type = INT; |
963b5f2d |
533 | t->size = getSizeAttribute(in); |
534 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
535 | getForwardslash(in); |
536 | getRAnglebracket(in); |
6cd62ccf |
537 | } |
538 | else if(strcmp(token,"uint") == 0) { |
539 | t->type = UINT; |
963b5f2d |
540 | t->size = getSizeAttribute(in); |
541 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
542 | getForwardslash(in); |
543 | getRAnglebracket(in); |
6cd62ccf |
544 | } |
545 | else if(strcmp(token,"float") == 0) { |
546 | t->type = FLOAT; |
963b5f2d |
547 | t->size = getSizeAttribute(in); |
548 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
549 | getForwardslash(in); |
550 | getRAnglebracket(in); |
6cd62ccf |
551 | } |
552 | else if(strcmp(token,"string") == 0) { |
553 | t->type = STRING; |
963b5f2d |
554 | t->fmt = allocAndCopy(getFormatAttribute(in)); |
555 | getForwardslash(in); |
556 | getRAnglebracket(in); |
6cd62ccf |
557 | } |
963b5f2d |
558 | else if(strcmp(token,"typeref") == 0){ |
559 | // Must be a named type |
6cd62ccf |
560 | if(inType != NULL) |
561 | in->error(in,"Named type cannot refer to a named type"); |
562 | else { |
563 | free(t); |
564 | sequence_pop(unnamed_types); |
963b5f2d |
565 | token = getNameAttribute(in); |
566 | t = find_named_type(token, named_types); |
567 | getForwardslash(in); //<typeref name=type_name/> |
568 | getRAnglebracket(in); |
569 | return t; |
6cd62ccf |
570 | } |
963b5f2d |
571 | }else in->error(in,"not a valid type"); |
6cd62ccf |
572 | |
573 | return t; |
574 | } |
575 | |
576 | /***************************************************************************** |
577 | *Function name |
578 | * find_named_type : find a named type from hash table |
579 | *Input params |
580 | * name : type name |
963b5f2d |
581 | * named_types : array of named types |
6cd62ccf |
582 | *Return values |
583 | * type_descriptor * : a type descriptor |
584 | *****************************************************************************/ |
585 | |
586 | type_descriptor * find_named_type(char *name, table * named_types) |
587 | { |
588 | type_descriptor *t; |
589 | |
590 | t = table_find(named_types,name); |
591 | if(t == NULL) { |
592 | t = (type_descriptor *)memAlloc(sizeof(type_descriptor)); |
593 | t->type_name = allocAndCopy(name); |
594 | t->type = NONE; |
595 | t->fmt = NULL; |
908f42fa |
596 | table_insert(named_types,t->type_name,t); |
597 | // table_insert(named_types,allocAndCopy(name),t); |
6cd62ccf |
598 | } |
599 | return t; |
600 | } |
601 | |
602 | /***************************************************************************** |
603 | *Function name |
604 | * parseTypeDefinition : get type information from type definition |
605 | *Input params |
606 | * in : input file handle |
963b5f2d |
607 | * unnamed_types : array of unamed types |
608 | * named_types : array of named types |
6cd62ccf |
609 | *****************************************************************************/ |
610 | |
611 | void parseTypeDefinition(parse_file * in, sequence * unnamed_types, |
612 | table * named_types) |
613 | { |
614 | char *token; |
615 | type_descriptor *t; |
616 | |
963b5f2d |
617 | token = getNameAttribute(in); |
6cd62ccf |
618 | t = find_named_type(token, named_types); |
6cd62ccf |
619 | |
620 | if(t->type != NONE) in->error(in,"redefinition of named type"); |
963b5f2d |
621 | getRAnglebracket(in); //<type name=type_name> |
622 | getLAnglebracket(in); //<struct> |
623 | token = getName(in); |
624 | if(strcmp("struct",token))in->error(in,"not a valid type definition"); |
625 | ungetToken(in); |
6cd62ccf |
626 | parseType(in,t, unnamed_types, named_types); |
963b5f2d |
627 | |
628 | //</type> |
629 | getLAnglebracket(in); |
630 | getForwardslash(in); |
631 | token = getName(in); |
632 | if(strcmp("type",token))in->error(in,"not a valid type definition"); |
633 | getRAnglebracket(in); //</type> |
6cd62ccf |
634 | } |
635 | |
636 | /************************************************************************** |
637 | * Function : |
963b5f2d |
638 | * getComa, getName, getNumber, getEqual |
6cd62ccf |
639 | * Description : |
640 | * Read a token from the input file, check its type, return it scontent. |
641 | * |
642 | * Parameters : |
643 | * in , input file handle. |
644 | * |
645 | * Return values : |
646 | * address of token content. |
647 | * |
648 | **************************************************************************/ |
649 | |
650 | char *getName(parse_file * in) |
651 | { |
652 | char *token; |
653 | |
654 | token = getToken(in); |
655 | if(in->type != NAME) in->error(in,"Name token was expected"); |
656 | return token; |
657 | } |
658 | |
659 | int getNumber(parse_file * in) |
660 | { |
661 | char *token; |
662 | |
663 | token = getToken(in); |
664 | if(in->type != NUMBER) in->error(in, "Number token was expected"); |
665 | return atoi(token); |
666 | } |
667 | |
963b5f2d |
668 | char *getForwardslash(parse_file * in) |
6cd62ccf |
669 | { |
670 | char *token; |
671 | |
672 | token = getToken(in); |
963b5f2d |
673 | if(in->type != FORWARDSLASH) in->error(in, "forward slash token was expected"); |
6cd62ccf |
674 | return token; |
675 | } |
676 | |
963b5f2d |
677 | char *getLAnglebracket(parse_file * in) |
6cd62ccf |
678 | { |
679 | char *token; |
680 | |
681 | token = getToken(in); |
963b5f2d |
682 | if(in->type != LANGLEBRACKET) in->error(in, "Left angle bracket was expected"); |
6cd62ccf |
683 | return token; |
684 | } |
685 | |
963b5f2d |
686 | char *getRAnglebracket(parse_file * in) |
6cd62ccf |
687 | { |
688 | char *token; |
689 | |
690 | token = getToken(in); |
963b5f2d |
691 | if(in->type != RANGLEBRACKET) in->error(in, "Right angle bracket was expected"); |
6cd62ccf |
692 | return token; |
693 | } |
694 | |
695 | char *getQuotedString(parse_file * in) |
696 | { |
697 | char *token; |
698 | |
699 | token = getToken(in); |
700 | if(in->type != QUOTEDSTRING) in->error(in, "quoted string was expected"); |
701 | return token; |
702 | } |
703 | |
963b5f2d |
704 | char * getEqual(parse_file *in) |
6cd62ccf |
705 | { |
706 | char *token; |
707 | |
708 | token = getToken(in); |
963b5f2d |
709 | if(in->type != EQUAL) in->error(in, "equal was expected"); |
6cd62ccf |
710 | return token; |
711 | } |
712 | |
963b5f2d |
713 | char seekNextChar(parse_file *in) |
6cd62ccf |
714 | { |
963b5f2d |
715 | char car; |
716 | while((car = getc(in->fp)) != EOF) { |
717 | if(!isspace(car)){ |
718 | ungetc(car,in->fp); |
719 | return car; |
720 | } |
721 | } |
722 | return EOF; |
6cd62ccf |
723 | } |
724 | |
725 | /****************************************************************** |
726 | * Function : |
727 | * getToken, ungetToken |
728 | * Description : |
729 | * Read a token from the input file and return its type and content. |
730 | * Line numbers are accounted for and whitespace/comments are skipped. |
731 | * |
732 | * Parameters : |
733 | * in, input file handle. |
734 | * |
735 | * Return values : |
736 | * address of token content. |
737 | * |
738 | ******************************************************************/ |
739 | |
740 | void ungetToken(parse_file * in) |
741 | { |
742 | in->unget = 1; |
743 | } |
744 | |
745 | char *getToken(parse_file * in) |
746 | { |
747 | FILE *fp = in->fp; |
748 | char car, car1; |
749 | int pos = 0, escaped; |
750 | |
751 | if(in->unget == 1) { |
752 | in->unget = 0; |
753 | return in->buffer; |
754 | } |
755 | |
756 | /* skip whitespace and comments */ |
757 | |
758 | while((car = getc(fp)) != EOF) { |
759 | if(car == '/') { |
760 | car1 = getc(fp); |
761 | if(car1 == '*') skipComment(in); |
762 | else if(car1 == '/') skipEOL(in); |
763 | else { |
764 | car1 = ungetc(car1,fp); |
765 | break; |
766 | } |
767 | } |
768 | else if(car == '\n') in->lineno++; |
769 | else if(!isspace(car)) break; |
770 | } |
771 | |
772 | switch(car) { |
773 | case EOF: |
774 | in->type = ENDFILE; |
775 | break; |
963b5f2d |
776 | case '/': |
777 | in->type = FORWARDSLASH; |
6cd62ccf |
778 | in->buffer[pos] = car; |
779 | pos++; |
780 | break; |
963b5f2d |
781 | case '<': |
782 | in->type = LANGLEBRACKET; |
6cd62ccf |
783 | in->buffer[pos] = car; |
784 | pos++; |
785 | break; |
963b5f2d |
786 | case '>': |
787 | in->type = RANGLEBRACKET; |
6cd62ccf |
788 | in->buffer[pos] = car; |
789 | pos++; |
790 | break; |
791 | case '=': |
792 | in->type = EQUAL; |
793 | in->buffer[pos] = car; |
794 | pos++; |
795 | break; |
796 | case '"': |
797 | escaped = 0; |
798 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
799 | if(car == '\\' && escaped == 0) { |
800 | in->buffer[pos] = car; |
801 | pos++; |
802 | escaped = 1; |
803 | continue; |
804 | } |
805 | if(car == '"' && escaped == 0) break; |
806 | if(car == '\n' && escaped == 0) { |
807 | in->error(in, "non escaped newline inside quoted string"); |
808 | } |
809 | if(car == '\n') in->lineno++; |
810 | in->buffer[pos] = car; |
811 | pos++; |
812 | escaped = 0; |
813 | } |
814 | if(car == EOF) in->error(in,"no ending quotemark"); |
815 | if(pos == BUFFER_SIZE) in->error(in, "quoted string token too large"); |
816 | in->type = QUOTEDSTRING; |
817 | break; |
818 | default: |
819 | if(isdigit(car)) { |
820 | in->buffer[pos] = car; |
821 | pos++; |
822 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
823 | if(!isdigit(car)) { |
824 | ungetc(car,fp); |
825 | break; |
826 | } |
827 | in->buffer[pos] = car; |
828 | pos++; |
829 | } |
830 | if(car == EOF) ungetc(car,fp); |
831 | if(pos == BUFFER_SIZE) in->error(in, "number token too large"); |
832 | in->type = NUMBER; |
833 | } |
fc063e40 |
834 | else if(ltt_isalpha(car)) { |
6cd62ccf |
835 | in->buffer[0] = car; |
836 | pos = 1; |
837 | while((car = getc(fp)) != EOF && pos < BUFFER_SIZE) { |
fc063e40 |
838 | if(!ltt_isalnum(car)) { |
6cd62ccf |
839 | ungetc(car,fp); |
840 | break; |
841 | } |
842 | in->buffer[pos] = car; |
843 | pos++; |
844 | } |
845 | if(car == EOF) ungetc(car,fp); |
846 | if(pos == BUFFER_SIZE) in->error(in, "name token too large"); |
847 | in->type = NAME; |
848 | } |
849 | else in->error(in, "invalid character, unrecognized token"); |
850 | } |
851 | in->buffer[pos] = 0; |
852 | return in->buffer; |
853 | } |
854 | |
855 | void skipComment(parse_file * in) |
856 | { |
857 | char car; |
858 | while((car = getc(in->fp)) != EOF) { |
859 | if(car == '\n') in->lineno++; |
860 | else if(car == '*') { |
861 | car = getc(in->fp); |
862 | if(car ==EOF) break; |
863 | if(car == '/') return; |
864 | ungetc(car,in->fp); |
865 | } |
866 | } |
867 | if(car == EOF) in->error(in,"comment begining with '/*' has no ending '*/'"); |
868 | } |
869 | |
870 | void skipEOL(parse_file * in) |
871 | { |
872 | char car; |
873 | while((car = getc(in->fp)) != EOF) { |
874 | if(car == '\n') { |
875 | ungetc(car,in->fp); |
876 | break; |
877 | } |
878 | } |
879 | if(car == EOF)ungetc(car, in->fp); |
880 | } |
881 | |
6cd62ccf |
882 | /***************************************************************************** |
883 | *Function name |
884 | * checkNamedTypesImplemented : check if all named types have definition |
fc063e40 |
885 | * returns -1 on error, 0 if ok |
6cd62ccf |
886 | ****************************************************************************/ |
887 | |
fc063e40 |
888 | int checkNamedTypesImplemented(table * named_types) |
6cd62ccf |
889 | { |
890 | type_descriptor *t; |
891 | int pos; |
892 | char str[256]; |
893 | |
894 | for(pos = 0 ; pos < named_types->values.position; pos++) { |
895 | t = (type_descriptor *) named_types->values.array[pos]; |
896 | if(t->type == NONE){ |
fc063e40 |
897 | sprintf(str,"named type '%s' has no definition", |
898 | (char*)named_types->keys.array[pos]); |
899 | error_callback(NULL,str); |
900 | return -1; |
6cd62ccf |
901 | } |
902 | } |
fc063e40 |
903 | return 0; |
6cd62ccf |
904 | } |
905 | |
906 | |
907 | /***************************************************************************** |
908 | *Function name |
909 | * generateChecksum : generate checksum for the facility |
910 | *Input Params |
911 | * facName : name of facility |
912 | *Output Params |
913 | * checksum : checksum for the facility |
914 | ****************************************************************************/ |
915 | |
0f7f40c1 |
916 | int generateChecksum(char* facName, guint32 * checksum, sequence * events) |
6cd62ccf |
917 | { |
918 | unsigned long crc ; |
963b5f2d |
919 | int pos; |
8d1e6362 |
920 | event_t * ev; |
6cd62ccf |
921 | char str[256]; |
922 | |
923 | crc = crc32(facName); |
924 | for(pos = 0; pos < events->position; pos++){ |
8d1e6362 |
925 | ev = (event_t *)(events->array[pos]); |
6cd62ccf |
926 | crc = partial_crc32(ev->name,crc); |
963b5f2d |
927 | if(!ev->type) continue; //event without type |
6cd62ccf |
928 | if(ev->type->type != STRUCT){ |
929 | sprintf(str,"event '%s' has a type other than STRUCT",ev->name); |
930 | error_callback(NULL, str); |
fc063e40 |
931 | return -1; |
6cd62ccf |
932 | } |
963b5f2d |
933 | crc = getTypeChecksum(crc, ev->type); |
6cd62ccf |
934 | } |
935 | *checksum = crc; |
fc063e40 |
936 | return 0; |
6cd62ccf |
937 | } |
938 | |
939 | /***************************************************************************** |
940 | *Function name |
941 | * getTypeChecksum : generate checksum by type info |
942 | *Input Params |
943 | * crc : checksum generated so far |
944 | * type : type descriptor containing type info |
945 | *Return value |
946 | * unsigned long : checksum |
947 | *****************************************************************************/ |
948 | |
963b5f2d |
949 | unsigned long getTypeChecksum(unsigned long aCrc, type_descriptor * type) |
6cd62ccf |
950 | { |
951 | unsigned long crc = aCrc; |
952 | char * str = NULL, buf[16]; |
963b5f2d |
953 | int flag = 0, pos; |
8d1e6362 |
954 | type_fields * fld; |
6cd62ccf |
955 | |
956 | switch(type->type){ |
957 | case INT: |
958 | str = intOutputTypes[type->size]; |
959 | break; |
960 | case UINT: |
961 | str = uintOutputTypes[type->size]; |
962 | break; |
963 | case FLOAT: |
964 | str = floatOutputTypes[type->size]; |
965 | break; |
966 | case STRING: |
967 | str = allocAndCopy("string"); |
968 | flag = 1; |
969 | break; |
970 | case ENUM: |
971 | str = appendString("enum ", uintOutputTypes[type->size]); |
972 | flag = 1; |
973 | break; |
974 | case ARRAY: |
8d1e6362 |
975 | sprintf(buf,"%d",type->size); |
6cd62ccf |
976 | str = appendString("array ",buf); |
977 | flag = 1; |
978 | break; |
979 | case SEQUENCE: |
8d1e6362 |
980 | sprintf(buf,"%d",type->size); |
6cd62ccf |
981 | str = appendString("sequence ",buf); |
982 | flag = 1; |
983 | break; |
984 | case STRUCT: |
985 | str = allocAndCopy("struct"); |
986 | flag = 1; |
987 | break; |
963b5f2d |
988 | case UNION: |
989 | str = allocAndCopy("union"); |
990 | flag = 1; |
991 | break; |
6cd62ccf |
992 | default: |
993 | error_callback(NULL, "named type has no definition"); |
994 | break; |
995 | } |
996 | |
997 | crc = partial_crc32(str,crc); |
998 | if(flag) free(str); |
999 | |
1000 | if(type->fmt) crc = partial_crc32(type->fmt,crc); |
1001 | |
1002 | if(type->type == ARRAY || type->type == SEQUENCE){ |
963b5f2d |
1003 | crc = getTypeChecksum(crc,type->nested_type); |
1004 | }else if(type->type == STRUCT || type->type == UNION){ |
1005 | for(pos =0; pos < type->fields.position; pos++){ |
8d1e6362 |
1006 | fld = (type_fields *) type->fields.array[pos]; |
963b5f2d |
1007 | crc = partial_crc32(fld->name,crc); |
1008 | crc = getTypeChecksum(crc, fld->type); |
1009 | } |
6cd62ccf |
1010 | }else if(type->type == ENUM){ |
1011 | for(pos = 0; pos < type->labels.position; pos++) |
963b5f2d |
1012 | crc = partial_crc32((char*)type->labels.array[pos],crc); |
6cd62ccf |
1013 | } |
1014 | |
1015 | return crc; |
1016 | } |
1017 | |
1018 | |
1019 | /* Event type descriptors */ |
1020 | void freeType(type_descriptor * tp) |
1021 | { |
1022 | int pos2; |
8d1e6362 |
1023 | type_fields *f; |
6cd62ccf |
1024 | |
1025 | if(tp->fmt != NULL) free(tp->fmt); |
1026 | if(tp->type == ENUM) { |
1027 | for(pos2 = 0; pos2 < tp->labels.position; pos2++) { |
1028 | free(tp->labels.array[pos2]); |
1029 | } |
1030 | sequence_dispose(&(tp->labels)); |
1031 | } |
1032 | if(tp->type == STRUCT) { |
1033 | for(pos2 = 0; pos2 < tp->fields.position; pos2++) { |
8d1e6362 |
1034 | f = (type_fields *) tp->fields.array[pos2]; |
6cd62ccf |
1035 | free(f->name); |
1036 | free(f->description); |
1037 | free(f); |
1038 | } |
1039 | sequence_dispose(&(tp->fields)); |
1040 | } |
1041 | } |
1042 | |
1043 | void freeNamedType(table * t) |
1044 | { |
1045 | int pos; |
1046 | type_descriptor * td; |
1047 | |
1048 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1049 | free((char *)t->keys.array[pos]); |
1050 | td = (type_descriptor*)t->values.array[pos]; |
1051 | freeType(td); |
1052 | free(td); |
1053 | } |
1054 | } |
1055 | |
1056 | void freeTypes(sequence *t) |
1057 | { |
8d1e6362 |
1058 | int pos; |
6cd62ccf |
1059 | type_descriptor *tp; |
6cd62ccf |
1060 | |
1061 | for(pos = 0 ; pos < t->position; pos++) { |
1062 | tp = (type_descriptor *)t->array[pos]; |
1063 | freeType(tp); |
1064 | free(tp); |
1065 | } |
1066 | } |
1067 | |
1068 | void freeEvents(sequence *t) |
1069 | { |
1070 | int pos; |
8d1e6362 |
1071 | event_t *ev; |
6cd62ccf |
1072 | |
1073 | for(pos = 0 ; pos < t->position; pos++) { |
8d1e6362 |
1074 | ev = (event_t *) t->array[pos]; |
6cd62ccf |
1075 | free(ev->name); |
1076 | free(ev->description); |
1077 | free(ev); |
1078 | } |
1079 | |
1080 | } |
1081 | |
1082 | |
1083 | /* Extensible array */ |
1084 | |
1085 | void sequence_init(sequence *t) |
1086 | { |
1087 | t->size = 10; |
1088 | t->position = 0; |
1089 | t->array = (void **)memAlloc(t->size * sizeof(void *)); |
1090 | } |
1091 | |
1092 | void sequence_dispose(sequence *t) |
1093 | { |
1094 | t->size = 0; |
1095 | free(t->array); |
1096 | t->array = NULL; |
1097 | } |
1098 | |
1099 | void sequence_push(sequence *t, void *elem) |
1100 | { |
1101 | void **tmp; |
1102 | |
1103 | if(t->position >= t->size) { |
1104 | tmp = t->array; |
1105 | t->array = (void **)memAlloc(t->size * 2 * sizeof(void *)); |
1106 | memcpy(t->array, tmp, t->size * sizeof(void *)); |
1107 | t->size = t->size * 2; |
1108 | free(tmp); |
1109 | } |
1110 | t->array[t->position] = elem; |
1111 | t->position++; |
1112 | } |
1113 | |
1114 | void *sequence_pop(sequence *t) |
1115 | { |
1116 | return t->array[t->position--]; |
1117 | } |
1118 | |
1119 | |
1120 | /* Hash table API, implementation is just linear search for now */ |
1121 | |
1122 | void table_init(table *t) |
1123 | { |
1124 | sequence_init(&(t->keys)); |
1125 | sequence_init(&(t->values)); |
1126 | } |
1127 | |
1128 | void table_dispose(table *t) |
1129 | { |
1130 | sequence_dispose(&(t->keys)); |
1131 | sequence_dispose(&(t->values)); |
1132 | } |
1133 | |
1134 | void table_insert(table *t, char *key, void *value) |
1135 | { |
1136 | sequence_push(&(t->keys),key); |
1137 | sequence_push(&(t->values),value); |
1138 | } |
1139 | |
1140 | void *table_find(table *t, char *key) |
1141 | { |
1142 | int pos; |
1143 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1144 | if(strcmp((char *)key,(char *)t->keys.array[pos]) == 0) |
1145 | return(t->values.array[pos]); |
1146 | } |
1147 | return NULL; |
1148 | } |
1149 | |
1150 | void table_insert_int(table *t, int *key, void *value) |
1151 | { |
1152 | sequence_push(&(t->keys),key); |
1153 | sequence_push(&(t->values),value); |
1154 | } |
1155 | |
1156 | void *table_find_int(table *t, int *key) |
1157 | { |
1158 | int pos; |
1159 | for(pos = 0 ; pos < t->keys.position; pos++) { |
1160 | if(*key == *(int *)t->keys.array[pos]) |
1161 | return(t->values.array[pos]); |
1162 | } |
1163 | return NULL; |
1164 | } |
1165 | |
1166 | |
1167 | /* Concatenate strings */ |
1168 | |
1169 | char *appendString(char *s, char *suffix) |
1170 | { |
1171 | char *tmp; |
963b5f2d |
1172 | if(suffix == NULL) return s; |
6cd62ccf |
1173 | |
1174 | tmp = (char *)memAlloc(strlen(s) + strlen(suffix) + 1); |
1175 | strcpy(tmp,s); |
1176 | strcat(tmp,suffix); |
1177 | return tmp; |
1178 | } |
1179 | |
1180 | |