rpc_util.c revision 1.7 1 /* $NetBSD: rpc_util.c,v 1.7 1997/10/11 21:01:57 christos Exp $ */
2 /*
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user or with the express written consent of
9 * Sun Microsystems, Inc.
10 *
11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 *
15 * Sun RPC is provided with no support and without any obligation on the
16 * part of Sun Microsystems, Inc. to assist in its use, correction,
17 * modification or enhancement.
18 *
19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
22 *
23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24 * or profits or other special, indirect and consequential damages, even if
25 * Sun has been advised of the possibility of such damages.
26 *
27 * Sun Microsystems, Inc.
28 * 2550 Garcia Avenue
29 * Mountain View, California 94043
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)rpc_util.c 1.11 89/02/22 (C) 1987 SMI";
36 #else
37 __RCSID("$NetBSD: rpc_util.c,v 1.7 1997/10/11 21:01:57 christos Exp $");
38 #endif
39 #endif
40
41 /*
42 * rpc_util.c, Utility routines for the RPC protocol compiler
43 */
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <unistd.h>
47 #include <string.h>
48 #include <ctype.h>
49 #include "rpc_scan.h"
50 #include "rpc_parse.h"
51 #include "rpc_util.h"
52
53 #define ARGEXT "argument"
54
55 static void printwhere __P((void));
56
57 char curline[MAXLINESIZE]; /* current read line */
58 char *where = curline; /* current point in line */
59 int linenum = 0; /* current line number */
60
61 char *infilename; /* input filename */
62
63 #define NFILES 7
64 char *outfiles[NFILES]; /* output file names */
65 int nfiles;
66
67 FILE *fout; /* file pointer of current output */
68 FILE *fin; /* file pointer of current input */
69
70 list *defined; /* list of defined things */
71
72 static char *toktostr __P((tok_kind));
73 static void printbuf __P((void));
74 static void printwhere __P((void));
75 static int findit __P((definition *, char *));
76 static char *fixit __P((char *, char *));
77 static int typedefed __P((definition *, char *));
78
79 /*
80 * Reinitialize the world
81 */
82 void
83 reinitialize()
84 {
85 memset(curline, 0, MAXLINESIZE);
86 where = curline;
87 linenum = 0;
88 defined = NULL;
89 }
90
91 /*
92 * string equality
93 */
94 int
95 streq(a, b)
96 char *a;
97 char *b;
98 {
99 return (strcmp(a, b) == 0);
100 }
101
102 /*
103 * find a value in a list
104 */
105 definition *
106 findval(lst, val, cmp)
107 list *lst;
108 char *val;
109 int (*cmp) __P((definition *, char *));
110
111 {
112
113 for (; lst != NULL; lst = lst->next) {
114 if ((*cmp) (lst->val, val)) {
115 return (lst->val);
116 }
117 }
118 return (NULL);
119 }
120
121 /*
122 * store a value in a list
123 */
124 void
125 storeval(lstp, val)
126 list **lstp;
127 definition *val;
128 {
129 list **l;
130 list *lst;
131
132
133 for (l = lstp; *l != NULL; l = (list **) & (*l)->next);
134 lst = ALLOC(list);
135 lst->val = val;
136 lst->next = NULL;
137 *l = lst;
138 }
139
140 static int
141 findit(def, type)
142 definition *def;
143 char *type;
144 {
145 return (streq(def->def_name, type));
146 }
147
148 static char *
149 fixit(type, orig)
150 char *type;
151 char *orig;
152 {
153 definition *def;
154
155 def = (definition *) FINDVAL(defined, type, findit);
156 if (def == NULL || def->def_kind != DEF_TYPEDEF) {
157 return (orig);
158 }
159 switch (def->def.ty.rel) {
160 case REL_VECTOR:
161 return (def->def.ty.old_type);
162 case REL_ALIAS:
163 return (fixit(def->def.ty.old_type, orig));
164 default:
165 return (orig);
166 }
167 }
168
169 char *
170 fixtype(type)
171 char *type;
172 {
173 return (fixit(type, type));
174 }
175
176 char *
177 stringfix(type)
178 char *type;
179 {
180 if (streq(type, "string")) {
181 return ("wrapstring");
182 } else {
183 return (type);
184 }
185 }
186
187 void
188 ptype(prefix, type, follow)
189 char *prefix;
190 char *type;
191 int follow;
192 {
193 if (prefix != NULL) {
194 if (streq(prefix, "enum")) {
195 f_print(fout, "enum ");
196 } else {
197 f_print(fout, "struct ");
198 }
199 }
200 if (streq(type, "bool")) {
201 f_print(fout, "bool_t ");
202 } else if (streq(type, "string")) {
203 f_print(fout, "char *");
204 } else {
205 f_print(fout, "%s ", follow ? fixtype(type) : type);
206 }
207 }
208
209 static int
210 typedefed(def, type)
211 definition *def;
212 char *type;
213 {
214 if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL) {
215 return (0);
216 } else {
217 return (streq(def->def_name, type));
218 }
219 }
220
221 int
222 isvectordef(type, rel)
223 char *type;
224 relation rel;
225 {
226 definition *def;
227
228 for (;;) {
229 switch (rel) {
230 case REL_VECTOR:
231 return (!streq(type, "string"));
232 case REL_ARRAY:
233 return (0);
234 case REL_POINTER:
235 return (0);
236 case REL_ALIAS:
237 def = (definition *) FINDVAL(defined, type, typedefed);
238 if (def == NULL) {
239 return (0);
240 }
241 type = def->def.ty.old_type;
242 rel = def->def.ty.rel;
243 }
244 }
245 }
246
247 char *
248 locase(str)
249 char *str;
250 {
251 char c;
252 static char buf[100];
253 char *p = buf;
254
255 while ((c = *str++) != '\0') {
256 *p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
257 }
258 *p = 0;
259 return (buf);
260 }
261
262 void
263 pvname_svc(pname, vnum)
264 char *pname;
265 char *vnum;
266 {
267 f_print(fout, "%s_%s_svc", locase(pname), vnum);
268 }
269
270 void
271 pvname(pname, vnum)
272 char *pname;
273 char *vnum;
274 {
275 f_print(fout, "%s_%s", locase(pname), vnum);
276 }
277
278 /*
279 * print a useful (?) error message, and then die
280 */
281 void
282 error(msg)
283 char *msg;
284 {
285 printwhere();
286 f_print(stderr, "%s, line %d: ", infilename, linenum);
287 f_print(stderr, "%s\n", msg);
288 crash();
289 }
290
291 /*
292 * Something went wrong, unlink any files that we may have created and then
293 * die.
294 */
295 void
296 crash()
297 {
298 int i;
299
300 for (i = 0; i < nfiles; i++) {
301 (void) unlink(outfiles[i]);
302 }
303 exit(1);
304 }
305
306 void
307 record_open(file)
308 char *file;
309 {
310 if (nfiles < NFILES) {
311 outfiles[nfiles++] = file;
312 } else {
313 f_print(stderr, "too many files!\n");
314 crash();
315 }
316 }
317
318 static char expectbuf[100];
319
320 /*
321 * error, token encountered was not the expected one
322 */
323 void
324 expected1(exp1)
325 tok_kind exp1;
326 {
327 s_print(expectbuf, "expected '%s'",
328 toktostr(exp1));
329 error(expectbuf);
330 }
331
332 /*
333 * error, token encountered was not one of two expected ones
334 */
335 void
336 expected2(exp1, exp2)
337 tok_kind exp1, exp2;
338 {
339 s_print(expectbuf, "expected '%s' or '%s'",
340 toktostr(exp1),
341 toktostr(exp2));
342 error(expectbuf);
343 }
344
345 /*
346 * error, token encountered was not one of 3 expected ones
347 */
348 void
349 expected3(exp1, exp2, exp3)
350 tok_kind exp1, exp2, exp3;
351 {
352 s_print(expectbuf, "expected '%s', '%s' or '%s'",
353 toktostr(exp1),
354 toktostr(exp2),
355 toktostr(exp3));
356 error(expectbuf);
357 }
358
359 void
360 tabify(f, tab)
361 FILE *f;
362 int tab;
363 {
364 while (tab--) {
365 (void) fputc('\t', f);
366 }
367 }
368
369
370 static token tokstrings[] = {
371 {TOK_IDENT, "identifier"},
372 {TOK_CONST, "const"},
373 {TOK_RPAREN, ")"},
374 {TOK_LPAREN, "("},
375 {TOK_RBRACE, "}"},
376 {TOK_LBRACE, "{"},
377 {TOK_LBRACKET, "["},
378 {TOK_RBRACKET, "]"},
379 {TOK_STAR, "*"},
380 {TOK_COMMA, ","},
381 {TOK_EQUAL, "="},
382 {TOK_COLON, ":"},
383 {TOK_SEMICOLON, ";"},
384 {TOK_UNION, "union"},
385 {TOK_STRUCT, "struct"},
386 {TOK_SWITCH, "switch"},
387 {TOK_CASE, "case"},
388 {TOK_DEFAULT, "default"},
389 {TOK_ENUM, "enum"},
390 {TOK_TYPEDEF, "typedef"},
391 {TOK_INT, "int"},
392 {TOK_SHORT, "short"},
393 {TOK_LONG, "long"},
394 {TOK_UNSIGNED, "unsigned"},
395 {TOK_DOUBLE, "double"},
396 {TOK_FLOAT, "float"},
397 {TOK_CHAR, "char"},
398 {TOK_STRING, "string"},
399 {TOK_OPAQUE, "opaque"},
400 {TOK_BOOL, "bool"},
401 {TOK_VOID, "void"},
402 {TOK_PROGRAM, "program"},
403 {TOK_VERSION, "version"},
404 {TOK_EOF, "??????"}
405 };
406
407 static char *
408 toktostr(kind)
409 tok_kind kind;
410 {
411 token *sp;
412
413 for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++);
414 return (sp->str);
415 }
416
417 static void
418 printbuf()
419 {
420 char c;
421 int i;
422 int cnt;
423
424 # define TABSIZE 4
425
426 for (i = 0; (c = curline[i]) != '\0'; i++) {
427 if (c == '\t') {
428 cnt = 8 - (i % TABSIZE);
429 c = ' ';
430 } else {
431 cnt = 1;
432 }
433 while (cnt--) {
434 (void) fputc(c, stderr);
435 }
436 }
437 }
438
439 static void
440 printwhere()
441 {
442 int i;
443 char c;
444 int cnt;
445
446 printbuf();
447 for (i = 0; i < where - curline; i++) {
448 c = curline[i];
449 if (c == '\t') {
450 cnt = 8 - (i % TABSIZE);
451 } else {
452 cnt = 1;
453 }
454 while (cnt--) {
455 (void) fputc('^', stderr);
456 }
457 }
458 (void) fputc('\n', stderr);
459 }
460
461 char *
462 make_argname(pname, vname)
463 char *pname;
464 char *vname;
465 {
466 char *name;
467
468 name = (char *)malloc(strlen(pname) + strlen(vname) + strlen(ARGEXT) + 3);
469 if (!name) {
470 fprintf(stderr, "failed in malloc");
471 exit(1);
472 }
473 sprintf(name, "%s_%s_%s", locase(pname), vname, ARGEXT);
474 return(name);
475 }
476
477 bas_type *typ_list_h;
478 bas_type *typ_list_t;
479
480 void
481 add_type(len,type)
482 int len;
483 char *type;
484 {
485 bas_type *ptr;
486
487 if ((ptr = (bas_type *)malloc(sizeof(bas_type))) == (bas_type *)NULL) {
488 fprintf(stderr, "failed in malloc");
489 exit(1);
490 }
491
492 ptr->name=type;
493 ptr->length=len;
494 ptr->next=NULL;
495 if (typ_list_t == NULL) {
496 typ_list_t=ptr;
497 typ_list_h=ptr;
498 } else {
499 typ_list_t->next=ptr;
500 typ_list_t=ptr;
501 }
502 }
503
504 bas_type *
505 find_type(type)
506 char *type;
507 {
508 bas_type * ptr;
509
510 ptr=typ_list_h;
511
512
513 while (ptr != NULL) {
514 if (strcmp(ptr->name,type) == 0)
515 return(ptr);
516 else
517 ptr=ptr->next;
518 }
519 return(NULL);
520 }
521
522