3 * Copyright (c) 2004-2006 Kungliga Tekniska Högskolan
4 * (Royal Institute of Technology, Stockholm, Sweden).
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the Institute nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 RCSID("$Id: slc-gram.y 20767 2007-06-01 11:24:52Z lha $");
51 extern struct assignment *assignment;
56 struct assignment *assignment;
59 %token <string> LITERAL
60 %token <string> STRING
61 %type <assignment> assignment assignments
73 assignments : assignment assignments
81 assignment : LITERAL '=' STRING
83 $$ = malloc(sizeof(*$$));
90 | LITERAL '=' '{' assignments '}'
92 $$ = malloc(sizeof(*$$));
94 $$->type = a_assignment;
96 $$->u.assignment = $4;
105 struct assignment *assignment;
109 ex(struct assignment *a, const char *fmt, ...)
112 fprintf(stderr, "%s:%d: ", a->name, a->lineno);
114 vfprintf(stderr, fmt, ap);
116 fprintf(stderr, "\n");
122 check_option(struct assignment *as)
124 struct assignment *a;
128 int seen_argument = 0;
130 int seen_default = 0;
133 for(a = as; a != NULL; a = a->next) {
134 if(strcmp(a->name, "long") == 0)
136 else if(strcmp(a->name, "short") == 0)
138 else if(strcmp(a->name, "type") == 0)
140 else if(strcmp(a->name, "argument") == 0)
142 else if(strcmp(a->name, "help") == 0)
144 else if(strcmp(a->name, "default") == 0)
147 ex(a, "unknown name");
151 if(seen_long == 0 && seen_short == 0) {
152 ex(as, "neither long nor short option");
156 ex(as, "multiple long options");
160 ex(as, "multiple short options");
164 ex(as, "multiple types");
167 if(seen_argument > 1) {
168 ex(as, "multiple arguments");
172 ex(as, "multiple help strings");
175 if(seen_default > 1) {
176 ex(as, "multiple default values");
183 check_command(struct assignment *as)
185 struct assignment *a;
187 int seen_function = 0;
189 int seen_argument = 0;
190 int seen_minargs = 0;
191 int seen_maxargs = 0;
193 for(a = as; a != NULL; a = a->next) {
194 if(strcmp(a->name, "name") == 0)
196 else if(strcmp(a->name, "function") == 0) {
198 } else if(strcmp(a->name, "option") == 0)
199 ret += check_option(a->u.assignment);
200 else if(strcmp(a->name, "help") == 0) {
202 } else if(strcmp(a->name, "argument") == 0) {
204 } else if(strcmp(a->name, "min_args") == 0) {
206 } else if(strcmp(a->name, "max_args") == 0) {
209 ex(a, "unknown name");
214 ex(as, "no command name");
217 if(seen_function > 1) {
218 ex(as, "multiple function names");
222 ex(as, "multiple help strings");
225 if(seen_argument > 1) {
226 ex(as, "multiple argument strings");
229 if(seen_minargs > 1) {
230 ex(as, "multiple min_args strings");
233 if(seen_maxargs > 1) {
234 ex(as, "multiple max_args strings");
242 check(struct assignment *as)
244 struct assignment *a;
246 for(a = as; a != NULL; a = a->next) {
247 if(strcmp(a->name, "command")) {
248 fprintf(stderr, "unknown type %s line %d\n", a->name, a->lineno);
252 if(a->type != a_assignment) {
253 fprintf(stderr, "bad command definition %s line %d\n", a->name, a->lineno);
257 ret += check_command(a->u.assignment);
262 static struct assignment *
263 find_next(struct assignment *as, const char *name)
265 for(as = as->next; as != NULL; as = as->next) {
266 if(strcmp(as->name, name) == 0)
272 static struct assignment *
273 find(struct assignment *as, const char *name)
275 for(; as != NULL; as = as->next) {
276 if(strcmp(as->name, name) == 0)
283 space(FILE *f, int level)
285 fprintf(f, "%*.*s", level * 4, level * 4, " ");
289 cprint(int level, const char *fmt, ...)
294 vfprintf(cfile, fmt, ap);
299 hprint(int level, const char *fmt, ...)
304 vfprintf(hfile, fmt, ap);
308 static void gen_name(char *str);
311 gen_command(struct assignment *as)
313 struct assignment *a, *b;
315 a = find(as, "name");
316 f = strdup(a->u.value);
319 fprintf(cfile, "\"%s\", ", a->u.value);
320 fprintf(cfile, "%s_wrap, ", f);
321 b = find(as, "argument");
323 fprintf(cfile, "\"%s %s\", ", a->u.value, b->u.value);
325 fprintf(cfile, "\"%s\", ", a->u.value);
326 b = find(as, "help");
328 fprintf(cfile, "\"%s\"", b->u.value);
330 fprintf(cfile, "NULL");
331 fprintf(cfile, " },\n");
332 for(a = a->next; a != NULL; a = a->next)
333 if(strcmp(a->name, "name") == 0)
334 cprint(1, " { \"%s\" },\n", a->u.value);
342 for(p = str; *p != '\0'; p++)
343 if(!isalnum((unsigned char)*p))
348 make_name(struct assignment *as)
350 struct assignment *lopt;
351 struct assignment *type;
354 lopt = find(as, "long");
356 lopt = find(as, "name");
360 type = find(as, "type");
361 if(strcmp(type->u.value, "-flag") == 0)
362 asprintf(&s, "%s_flag", lopt->u.value);
364 asprintf(&s, "%s_%s", lopt->u.value, type->u.value);
370 static void defval_int(const char *name, struct assignment *defval)
373 cprint(1, "opt.%s = %s;\n", name, defval->u.value);
375 cprint(1, "opt.%s = 0;\n", name);
377 static void defval_string(const char *name, struct assignment *defval)
380 cprint(1, "opt.%s = \"%s\";\n", name, defval->u.value);
382 cprint(1, "opt.%s = NULL;\n", name);
384 static void defval_strings(const char *name, struct assignment *defval)
386 cprint(1, "opt.%s.num_strings = 0;\n", name);
387 cprint(1, "opt.%s.strings = NULL;\n", name);
390 static void free_strings(const char *name)
392 cprint(1, "free_getarg_strings (&opt.%s);\n", name);
395 struct type_handler {
396 const char *typename;
398 const char *getarg_type;
399 void (*defval)(const char*, struct assignment*);
400 void (*free)(const char*);
401 } type_handlers[] = {
415 "struct getarg_strings",
435 static struct type_handler *find_handler(struct assignment *type)
437 struct type_handler *th;
438 for(th = type_handlers; th->typename != NULL; th++)
439 if(strcmp(type->u.value, th->typename) == 0)
441 ex(type, "unknown type \"%s\"", type->u.value);
446 gen_options(struct assignment *opt1, const char *name)
448 struct assignment *tmp;
450 hprint(0, "struct %s_options {\n", name);
454 tmp = find_next(tmp, "option")) {
455 struct assignment *type;
456 struct type_handler *th;
459 s = make_name(tmp->u.assignment);
460 type = find(tmp->u.assignment, "type");
461 th = find_handler(type);
462 hprint(1, "%s %s;\n", th->c_type, s);
469 gen_wrapper(struct assignment *as)
471 struct assignment *name;
472 struct assignment *arg;
473 struct assignment *opt1;
474 struct assignment *function;
475 struct assignment *tmp;
479 name = find(as, "name");
480 n = strdup(name->u.value);
482 arg = find(as, "argument");
483 opt1 = find(as, "option");
484 function = find(as, "function");
486 f = function->u.value;
492 gen_options(opt1, n);
493 hprint(0, "int %s(struct %s_options*, int, char **);\n", f, n);
495 hprint(0, "int %s(void*, int, char **);\n", f);
498 fprintf(cfile, "static int\n");
499 fprintf(cfile, "%s_wrap(int argc, char **argv)\n", n);
500 fprintf(cfile, "{\n");
502 cprint(1, "struct %s_options opt;\n", n);
503 cprint(1, "int ret;\n");
504 cprint(1, "int optidx = 0;\n");
505 cprint(1, "struct getargs args[] = {\n");
506 for(tmp = find(as, "option");
508 tmp = find_next(tmp, "option")) {
509 struct assignment *type = find(tmp->u.assignment, "type");
510 struct assignment *lopt = find(tmp->u.assignment, "long");
511 struct assignment *sopt = find(tmp->u.assignment, "short");
512 struct assignment *aarg = find(tmp->u.assignment, "argument");
513 struct assignment *help = find(tmp->u.assignment, "help");
515 struct type_handler *th;
519 fprintf(cfile, "\"%s\", ", lopt->u.value);
521 fprintf(cfile, "NULL, ");
523 fprintf(cfile, "'%c', ", *sopt->u.value);
525 fprintf(cfile, "0, ");
526 th = find_handler(type);
527 fprintf(cfile, "%s, ", th->getarg_type);
528 fprintf(cfile, "NULL, ");
530 fprintf(cfile, "\"%s\", ", help->u.value);
532 fprintf(cfile, "NULL, ");
534 fprintf(cfile, "\"%s\"", aarg->u.value);
536 fprintf(cfile, "NULL");
537 fprintf(cfile, " },\n");
539 cprint(2, "{ \"help\", 'h', arg_flag, NULL, NULL, NULL }\n");
541 cprint(1, "int help_flag = 0;\n");
543 for(tmp = find(as, "option");
545 tmp = find_next(tmp, "option")) {
547 struct assignment *type = find(tmp->u.assignment, "type");
549 struct assignment *defval = find(tmp->u.assignment, "default");
551 struct type_handler *th;
553 s = make_name(tmp->u.assignment);
554 th = find_handler(type);
555 (*th->defval)(s, defval);
559 for(tmp = find(as, "option");
561 tmp = find_next(tmp, "option")) {
563 s = make_name(tmp->u.assignment);
564 cprint(1, "args[%d].value = &opt.%s;\n", nargs++, s);
567 cprint(1, "args[%d].value = &help_flag;\n", nargs++);
568 cprint(1, "if(getarg(args, %d, argc, argv, &optidx))\n", nargs);
569 cprint(2, "goto usage;\n");
578 if((tmp = find(as, "min_args")) != NULL) {
579 min_args = strtol(tmp->u.value, &end, 0);
581 ex(tmp, "min_args is not numeric");
585 ex(tmp, "min_args must be non-negative");
589 if((tmp = find(as, "max_args")) != NULL) {
590 max_args = strtol(tmp->u.value, &end, 0);
592 ex(tmp, "max_args is not numeric");
596 ex(tmp, "max_args must be non-negative");
601 if(min_args != -1 || max_args != -1) {
602 if(min_args == max_args) {
603 cprint(1, "if(argc - optidx != %d) {\n",
605 cprint(2, "fprintf(stderr, \"Need exactly %u parameters (%%u given).\\n\\n\", argc - optidx);\n", min_args);
606 cprint(2, "goto usage;\n");
610 cprint(1, "if(argc - optidx > %d) {\n", max_args);
611 cprint(2, "fprintf(stderr, \"Arguments given (%%u) are more than expected (%u).\\n\\n\", argc - optidx);\n", max_args);
612 cprint(2, "goto usage;\n");
616 cprint(1, "if(argc - optidx < %d) {\n", min_args);
617 cprint(2, "fprintf(stderr, \"Arguments given (%%u) are less than expected (%u).\\n\\n\", argc - optidx);\n", min_args);
618 cprint(2, "goto usage;\n");
625 cprint(1, "if(help_flag)\n");
626 cprint(2, "goto usage;\n");
628 cprint(1, "ret = %s(%s, argc - optidx, argv + optidx);\n",
629 f, opt1 ? "&opt": "NULL");
631 /* free allocated data */
632 for(tmp = find(as, "option");
634 tmp = find_next(tmp, "option")) {
636 struct assignment *type = find(tmp->u.assignment, "type");
637 struct type_handler *th;
638 th = find_handler(type);
641 s = make_name(tmp->u.assignment);
645 cprint(1, "return ret;\n");
647 cprint(0, "usage:\n");
648 cprint(1, "arg_printusage (args, %d, \"%s\", \"%s\");\n", nargs,
649 name->u.value, arg ? arg->u.value : "");
650 /* free allocated data */
651 for(tmp = find(as, "option");
653 tmp = find_next(tmp, "option")) {
655 struct assignment *type = find(tmp->u.assignment, "type");
656 struct type_handler *th;
657 th = find_handler(type);
660 s = make_name(tmp->u.assignment);
664 cprint(1, "return 0;\n");
669 char cname[PATH_MAX];
670 char hname[PATH_MAX];
673 gen(struct assignment *as)
675 struct assignment *a;
676 cprint(0, "#include <stdio.h>\n");
677 cprint(0, "#include <getarg.h>\n");
678 cprint(0, "#include <sl.h>\n");
679 cprint(0, "#include \"%s\"\n\n", hname);
681 hprint(0, "#include <stdio.h>\n");
682 hprint(0, "#include <sl.h>\n");
686 for(a = as; a != NULL; a = a->next)
687 gen_wrapper(a->u.assignment);
689 cprint(0, "SL_cmd commands[] = {\n");
690 for(a = as; a != NULL; a = a->next)
691 gen_command(a->u.assignment);
692 cprint(1, "{ NULL }\n");
695 hprint(0, "extern SL_cmd commands[];\n");
700 struct getargs args[] = {
701 { "version", 0, arg_flag, &version_flag },
702 { "help", 0, arg_flag, &help_flag }
704 int num_args = sizeof(args) / sizeof(args[0]);
709 arg_printusage(args, num_args, NULL, "command-table");
714 main(int argc, char **argv)
720 setprogname(argv[0]);
721 if(getarg(args, num_args, argc, argv, &optidx))
733 filename = argv[optidx];
734 yyin = fopen(filename, "r");
736 err(1, "%s", filename);
737 p = strrchr(filename, '/');
739 strlcpy(cname, p + 1, sizeof(cname));
741 strlcpy(cname, filename, sizeof(cname));
742 p = strrchr(cname, '.');
745 strlcpy(hname, cname, sizeof(hname));
746 strlcat(cname, ".c", sizeof(cname));
747 strlcat(hname, ".h", sizeof(hname));
751 if(check(assignment) == 0) {
752 cfile = fopen(cname, "w");
755 hfile = fopen(hname, "w");