rpc_util.c revision 1.8 1 /* $NetBSD: rpc_util.c,v 1.8 1997/10/18 10:54:14 lukem 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 1.8 1997/10/18 10:54:14 lukem 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 * string equality
92 */
93 int
94 streq(a, b)
95 char *a;
96 char *b;
97 {
98 return (strcmp(a, b) == 0);
99 }
100 /*
101 * find a value in a list
102 */
103 definition *
104 findval(lst, val, cmp)
105 list *lst;
106 char *val;
107 int (*cmp) __P((definition *, char *));
108
109 {
110
111 for (; lst != NULL; lst = lst->next) {
112 if ((*cmp) (lst->val, val)) {
113 return (lst->val);
114 }
115 }
116 return (NULL);
117 }
118 /*
119 * store a value in a list
120 */
121 void
122 storeval(lstp, val)
123 list **lstp;
124 definition *val;
125 {
126 list **l;
127 list *lst;
128
129
130 for (l = lstp; *l != NULL; l = (list **) & (*l)->next);
131 lst = ALLOC(list);
132 lst->val = val;
133 lst->next = NULL;
134 *l = lst;
135 }
136
137 static int
138 findit(def, type)
139 definition *def;
140 char *type;
141 {
142 return (streq(def->def_name, type));
143 }
144
145 static char *
146 fixit(type, orig)
147 char *type;
148 char *orig;
149 {
150 definition *def;
151
152 def = (definition *) FINDVAL(defined, type, findit);
153 if (def == NULL || def->def_kind != DEF_TYPEDEF) {
154 return (orig);
155 }
156 switch (def->def.ty.rel) {
157 case REL_VECTOR:
158 return (def->def.ty.old_type);
159 case REL_ALIAS:
160 return (fixit(def->def.ty.old_type, orig));
161 default:
162 return (orig);
163 }
164 }
165
166 char *
167 fixtype(type)
168 char *type;
169 {
170 return (fixit(type, type));
171 }
172
173 char *
174 stringfix(type)
175 char *type;
176 {
177 if (streq(type, "string")) {
178 return ("wrapstring");
179 } else {
180 return (type);
181 }
182 }
183
184 void
185 ptype(prefix, type, follow)
186 char *prefix;
187 char *type;
188 int follow;
189 {
190 if (prefix != NULL) {
191 if (streq(prefix, "enum")) {
192 f_print(fout, "enum ");
193 } else {
194 f_print(fout, "struct ");
195 }
196 }
197 if (streq(type, "bool")) {
198 f_print(fout, "bool_t ");
199 } else
200 if (streq(type, "string")) {
201 f_print(fout, "char *");
202 } else {
203 f_print(fout, "%s ", follow ? fixtype(type) : type);
204 }
205 }
206
207 static int
208 typedefed(def, type)
209 definition *def;
210 char *type;
211 {
212 if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL) {
213 return (0);
214 } else {
215 return (streq(def->def_name, type));
216 }
217 }
218
219 int
220 isvectordef(type, rel)
221 char *type;
222 relation rel;
223 {
224 definition *def;
225
226 for (;;) {
227 switch (rel) {
228 case REL_VECTOR:
229 return (!streq(type, "string"));
230 case REL_ARRAY:
231 return (0);
232 case REL_POINTER:
233 return (0);
234 case REL_ALIAS:
235 def = (definition *) FINDVAL(defined, type, typedefed);
236 if (def == NULL) {
237 return (0);
238 }
239 type = def->def.ty.old_type;
240 rel = def->def.ty.rel;
241 }
242 }
243 }
244
245 char *
246 locase(str)
247 char *str;
248 {
249 char c;
250 static char buf[100];
251 char *p = buf;
252
253 while ((c = *str++) != '\0') {
254 *p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
255 }
256 *p = 0;
257 return (buf);
258 }
259
260 void
261 pvname_svc(pname, vnum)
262 char *pname;
263 char *vnum;
264 {
265 f_print(fout, "%s_%s_svc", locase(pname), vnum);
266 }
267
268 void
269 pvname(pname, vnum)
270 char *pname;
271 char *vnum;
272 {
273 f_print(fout, "%s_%s", locase(pname), vnum);
274 }
275 /*
276 * print a useful (?) error message, and then die
277 */
278 void
279 error(msg)
280 char *msg;
281 {
282 printwhere();
283 f_print(stderr, "%s, line %d: ", infilename, linenum);
284 f_print(stderr, "%s\n", msg);
285 crash();
286 }
287 /*
288 * Something went wrong, unlink any files that we may have created and then
289 * die.
290 */
291 void
292 crash()
293 {
294 int i;
295
296 for (i = 0; i < nfiles; i++) {
297 (void) unlink(outfiles[i]);
298 }
299 exit(1);
300 }
301
302 void
303 record_open(file)
304 char *file;
305 {
306 if (nfiles < NFILES) {
307 outfiles[nfiles++] = file;
308 } else {
309 f_print(stderr, "too many files!\n");
310 crash();
311 }
312 }
313
314 static char expectbuf[100];
315
316 /*
317 * error, token encountered was not the expected one
318 */
319 void
320 expected1(exp1)
321 tok_kind exp1;
322 {
323 s_print(expectbuf, "expected '%s'",
324 toktostr(exp1));
325 error(expectbuf);
326 }
327 /*
328 * error, token encountered was not one of two expected ones
329 */
330 void
331 expected2(exp1, exp2)
332 tok_kind exp1, exp2;
333 {
334 s_print(expectbuf, "expected '%s' or '%s'",
335 toktostr(exp1),
336 toktostr(exp2));
337 error(expectbuf);
338 }
339 /*
340 * error, token encountered was not one of 3 expected ones
341 */
342 void
343 expected3(exp1, exp2, exp3)
344 tok_kind exp1, exp2, exp3;
345 {
346 s_print(expectbuf, "expected '%s', '%s' or '%s'",
347 toktostr(exp1),
348 toktostr(exp2),
349 toktostr(exp3));
350 error(expectbuf);
351 }
352
353 void
354 tabify(f, tab)
355 FILE *f;
356 int tab;
357 {
358 while (tab--) {
359 (void) fputc('\t', f);
360 }
361 }
362
363
364 static token tokstrings[] = {
365 {TOK_IDENT, "identifier"},
366 {TOK_CONST, "const"},
367 {TOK_RPAREN, ")"},
368 {TOK_LPAREN, "("},
369 {TOK_RBRACE, "}"},
370 {TOK_LBRACE, "{"},
371 {TOK_LBRACKET, "["},
372 {TOK_RBRACKET, "]"},
373 {TOK_STAR, "*"},
374 {TOK_COMMA, ","},
375 {TOK_EQUAL, "="},
376 {TOK_COLON, ":"},
377 {TOK_SEMICOLON, ";"},
378 {TOK_UNION, "union"},
379 {TOK_STRUCT, "struct"},
380 {TOK_SWITCH, "switch"},
381 {TOK_CASE, "case"},
382 {TOK_DEFAULT, "default"},
383 {TOK_ENUM, "enum"},
384 {TOK_TYPEDEF, "typedef"},
385 {TOK_INT, "int"},
386 {TOK_SHORT, "short"},
387 {TOK_LONG, "long"},
388 {TOK_UNSIGNED, "unsigned"},
389 {TOK_DOUBLE, "double"},
390 {TOK_FLOAT, "float"},
391 {TOK_CHAR, "char"},
392 {TOK_STRING, "string"},
393 {TOK_OPAQUE, "opaque"},
394 {TOK_BOOL, "bool"},
395 {TOK_VOID, "void"},
396 {TOK_PROGRAM, "program"},
397 {TOK_VERSION, "version"},
398 {TOK_EOF, "??????"}
399 };
400
401 static char *
402 toktostr(kind)
403 tok_kind kind;
404 {
405 token *sp;
406
407 for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++);
408 return (sp->str);
409 }
410
411 static void
412 printbuf()
413 {
414 char c;
415 int i;
416 int cnt;
417
418 #define TABSIZE 4
419
420 for (i = 0; (c = curline[i]) != '\0'; i++) {
421 if (c == '\t') {
422 cnt = 8 - (i % TABSIZE);
423 c = ' ';
424 } else {
425 cnt = 1;
426 }
427 while (cnt--) {
428 (void) fputc(c, stderr);
429 }
430 }
431 }
432
433 static void
434 printwhere()
435 {
436 int i;
437 char c;
438 int cnt;
439
440 printbuf();
441 for (i = 0; i < where - curline; i++) {
442 c = curline[i];
443 if (c == '\t') {
444 cnt = 8 - (i % TABSIZE);
445 } else {
446 cnt = 1;
447 }
448 while (cnt--) {
449 (void) fputc('^', stderr);
450 }
451 }
452 (void) fputc('\n', stderr);
453 }
454
455 char *
456 make_argname(pname, vname)
457 char *pname;
458 char *vname;
459 {
460 char *name;
461
462 name = (char *) malloc(strlen(pname) + strlen(vname) + strlen(ARGEXT) + 3);
463 if (!name) {
464 fprintf(stderr, "failed in malloc");
465 exit(1);
466 }
467 sprintf(name, "%s_%s_%s", locase(pname), vname, ARGEXT);
468 return (name);
469 }
470
471 bas_type *typ_list_h;
472 bas_type *typ_list_t;
473
474 void
475 add_type(len, type)
476 int len;
477 char *type;
478 {
479 bas_type *ptr;
480
481 if ((ptr = (bas_type *) malloc(sizeof(bas_type))) == (bas_type *) NULL) {
482 fprintf(stderr, "failed in malloc");
483 exit(1);
484 }
485 ptr->name = type;
486 ptr->length = len;
487 ptr->next = NULL;
488 if (typ_list_t == NULL) {
489 typ_list_t = ptr;
490 typ_list_h = ptr;
491 } else {
492 typ_list_t->next = ptr;
493 typ_list_t = ptr;
494 }
495 }
496
497 bas_type *
498 find_type(type)
499 char *type;
500 {
501 bas_type *ptr;
502
503 ptr = typ_list_h;
504
505
506 while (ptr != NULL) {
507 if (strcmp(ptr->name, type) == 0)
508 return (ptr);
509 else
510 ptr = ptr->next;
511 }
512 return (NULL);
513 }
514