2 * Copyright 2008-2009 Katholieke Universiteit Leuven
4 * Use of this software is governed by the GNU LGPLv2.1 license
6 * Written by Sven Verdoolaege, K.U.Leuven, Departement
7 * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
17 static void set_default_choice(struct isl_arg *arg, void *opt)
19 *(unsigned *)(((char *)opt) + arg->offset) = arg->u.choice.default_value;
22 static void set_default_flags(struct isl_arg *arg, void *opt)
24 *(unsigned *)(((char *)opt) + arg->offset) = arg->u.flags.default_value;
27 static void set_default_bool(struct isl_arg *arg, void *opt)
29 *(unsigned *)(((char *)opt) + arg->offset) = arg->u.b.default_value;
32 static void set_default_child(struct isl_arg *arg, void *opt)
34 void *child = calloc(1, arg->u.child.size);
37 isl_arg_set_defaults(arg->u.child.child, child);
39 *(void **)(((char *)opt) + arg->offset) = child;
42 static void set_default_user(struct isl_arg *arg, void *opt)
44 arg->u.user.init(((char *)opt) + arg->offset);
47 static void set_default_long(struct isl_arg *arg, void *opt)
49 *(long *)(((char *)opt) + arg->offset) = arg->u.l.default_value;
52 static void set_default_ulong(struct isl_arg *arg, void *opt)
54 *(unsigned long *)(((char *)opt) + arg->offset) = arg->u.ul.default_value;
57 static void set_default_str(struct isl_arg *arg, void *opt)
59 const char *str = NULL;
60 if (arg->u.str.default_value)
61 str = strdup(arg->u.str.default_value);
62 *(const char **)(((char *)opt) + arg->offset) = str;
65 void isl_arg_set_defaults(struct isl_arg *arg, void *opt)
69 for (i = 0; arg[i].type != isl_arg_end; ++i) {
70 switch (arg[i].type) {
72 set_default_choice(&arg[i], opt);
75 set_default_flags(&arg[i], opt);
78 set_default_bool(&arg[i], opt);
81 set_default_child(&arg[i], opt);
84 set_default_user(&arg[i], opt);
87 set_default_long(&arg[i], opt);
90 set_default_ulong(&arg[i], opt);
94 set_default_str(&arg[i], opt);
103 void isl_arg_free(struct isl_arg *arg, void *opt)
110 for (i = 0; arg[i].type != isl_arg_end; ++i) {
111 switch (arg[i].type) {
113 isl_arg_free(arg[i].u.child.child,
114 *(void **)(((char *)opt) + arg[i].offset));
118 free(*(char **)(((char *)opt) + arg[i].offset));
121 if (arg[i].u.user.clear)
122 arg[i].u.user.clear(((char *)opt) + arg[i].offset);
129 case isl_arg_version:
138 static int print_arg_help(struct isl_arg *decl, const char *prefix, int no)
142 if (!decl->long_name) {
143 printf(" -%c", decl->short_name);
147 if (decl->short_name)
148 printf(" -%c, --", decl->short_name);
154 printf("%s-", prefix);
155 len += strlen(prefix) + 1;
161 printf("%s", decl->long_name);
162 len += strlen(decl->long_name);
167 const void *isl_memrchr(const void *s, int c, size_t n)
176 static int print_help_msg(struct isl_arg *decl, int pos)
185 printf("\n%30s", "");
187 printf("%*s", 30 - pos, "");
192 const char *space = isl_memrchr(s, ' ', 45);
196 space = strchr(s + 45, ' ');
200 printf("%.*s", l, s);
203 printf("\n%30s", "");
210 static void print_default(struct isl_arg *decl, const char *def, int pos)
213 const char *default_prefix = "[default: ";
214 const char *default_suffix = "]";
217 len = strlen(default_prefix) + strlen(def) + strlen(default_suffix);
219 if (!decl->help_msg) {
221 printf("\n%30s", "");
223 printf("%*s", 30 - pos, "");
227 printf("\n%30s", "");
231 printf("%s%s%s", default_prefix, def, default_suffix);
234 static void print_default_choice(struct isl_arg *decl, int pos)
237 const char *s = "none";
239 for (i = 0; decl->u.choice.choice[i].name; ++i)
240 if (decl->u.choice.choice[i].value == decl->u.choice.default_value) {
241 s = decl->u.choice.choice[i].name;
245 print_default(decl, s, pos);
248 static void print_choice_help(struct isl_arg *decl, const char *prefix)
253 pos = print_arg_help(decl, prefix, 0);
257 for (i = 0; decl->u.choice.choice[i].name; ++i) {
262 printf("%s", decl->u.choice.choice[i].name);
263 pos += strlen(decl->u.choice.choice[i].name);
266 pos = print_help_msg(decl, pos);
267 print_default_choice(decl, pos);
272 static void print_default_flags(struct isl_arg *decl, int pos)
275 const char *default_prefix = "[default: ";
276 const char *default_suffix = "]";
277 int len = strlen(default_prefix) + strlen(default_suffix);
279 for (i = 0; decl->u.flags.flags[i].name; ++i)
280 if ((decl->u.flags.default_value & decl->u.flags.flags[i].mask) ==
281 decl->u.flags.flags[i].value)
282 len += strlen(decl->u.flags.flags[i].name);
284 if (!decl->help_msg) {
286 printf("\n%30s", "");
288 printf("%*s", 30 - pos, "");
292 printf("\n%30s", "");
296 printf("%s", default_prefix);
298 for (first = 1, i = 0; decl->u.flags.flags[i].name; ++i)
299 if ((decl->u.flags.default_value & decl->u.flags.flags[i].mask) ==
300 decl->u.flags.flags[i].value) {
303 printf("%s", decl->u.flags.flags[i].name);
307 printf("%s", default_suffix);
310 static void print_flags_help(struct isl_arg *decl, const char *prefix)
315 pos = print_arg_help(decl, prefix, 0);
319 for (i = 0; decl->u.flags.flags[i].name; ++i) {
325 decl->u.flags.flags[j].mask == decl->u.flags.flags[i].mask;
331 printf("%s", decl->u.flags.flags[j].name);
332 pos += strlen(decl->u.flags.flags[j].name);
337 pos = print_help_msg(decl, pos);
338 print_default_flags(decl, pos);
343 static void print_bool_help(struct isl_arg *decl, const char *prefix)
346 int no = decl->u.b.default_value == 1;
347 pos = print_arg_help(decl, prefix, no);
348 pos = print_help_msg(decl, pos);
349 print_default(decl, no ? "yes" : "no", pos);
353 static int print_argument_name(struct isl_arg *decl, const char *name, int pos)
355 printf("%c<%s>", decl->long_name ? '=' : ' ', name);
356 return pos + 3 + strlen(name);
359 static void print_long_help(struct isl_arg *decl, const char *prefix)
362 pos = print_arg_help(decl, prefix, 0);
363 if (decl->u.l.default_value != decl->u.l.default_selected) {
369 if (decl->u.l.default_value != decl->u.l.default_selected) {
373 print_help_msg(decl, pos);
377 static void print_ulong_help(struct isl_arg *decl, const char *prefix)
380 pos = print_arg_help(decl, prefix, 0);
383 print_help_msg(decl, pos);
387 static void print_str_help(struct isl_arg *decl, const char *prefix)
390 const char *a = decl->argument_name ? decl->argument_name : "string";
391 pos = print_arg_help(decl, prefix, 0);
392 pos = print_argument_name(decl, a, pos);
393 pos = print_help_msg(decl, pos);
394 if (decl->u.str.default_value)
395 print_default(decl, decl->u.str.default_value, pos);
399 static void print_help(struct isl_arg *arg, const char *prefix)
403 for (i = 0; arg[i].type != isl_arg_end; ++i) {
404 switch (arg[i].type) {
406 print_flags_help(&arg[i], prefix);
409 print_choice_help(&arg[i], prefix);
412 print_bool_help(&arg[i], prefix);
415 print_long_help(&arg[i], prefix);
418 print_ulong_help(&arg[i], prefix);
421 print_str_help(&arg[i], prefix);
423 case isl_arg_version:
424 printf(" -V, --version\n");
434 for (i = 0; arg[i].type != isl_arg_end; ++i) {
435 if (arg[i].type != isl_arg_child)
440 printf(" %s\n", arg[i].help_msg);
441 print_help(arg[i].u.child.child, arg[i].long_name);
445 static const char *prog_name(const char *prog)
449 slash = strrchr(prog, '/');
452 if (strncmp(prog, "lt-", 3) == 0)
458 static void print_help_and_exit(struct isl_arg *arg, const char *prog)
462 printf("Usage: %s [OPTION...]", prog_name(prog));
464 for (i = 0; arg[i].type != isl_arg_end; ++i)
465 if (arg[i].type == isl_arg_arg)
466 printf(" %s", arg[i].argument_name);
470 print_help(arg, NULL);
475 static const char *skip_name(struct isl_arg *decl, const char *arg,
476 const char *prefix, int need_argument, int *has_argument)
482 if (arg[0] == '-' && arg[1] && arg[1] == decl->short_name) {
483 if (need_argument && !arg[2])
486 *has_argument = arg[2] != '\0';
489 if (!decl->long_name)
492 if (strncmp(arg, "--", 2))
496 equal = strchr(name, '=');
497 if (need_argument && !equal)
501 *has_argument = !!equal;
502 end = equal ? equal : name + strlen(name);
505 size_t prefix_len = strlen(prefix);
506 if (strncmp(name, prefix, prefix_len) == 0 &&
507 name[prefix_len] == '-')
508 name += prefix_len + 1;
511 if (end - name != strlen(decl->long_name) ||
512 strncmp(name, decl->long_name, end - name))
515 return equal ? equal + 1 : end;
518 static int parse_choice_option(struct isl_arg *decl, char **arg,
519 const char *prefix, void *opt)
525 choice = skip_name(decl, arg[0], prefix, 0, &has_argument);
529 if (!has_argument && (!arg[1] || arg[1][0] == '-')) {
530 unsigned u = decl->u.choice.default_selected;
531 if (decl->u.choice.set)
532 decl->u.choice.set(opt, u);
534 *(unsigned *)(((char *)opt) + decl->offset) = u;
542 for (i = 0; decl->u.choice.choice[i].name; ++i) {
545 if (strcmp(choice, decl->u.choice.choice[i].name))
548 u = decl->u.choice.choice[i].value;
549 if (decl->u.choice.set)
550 decl->u.choice.set(opt, u);
552 *(unsigned *)(((char *)opt) + decl->offset) = u;
554 return has_argument ? 1 : 2;
560 static int set_flag(struct isl_arg *decl, unsigned *val, const char *flag,
565 for (i = 0; decl->u.flags.flags[i].name; ++i) {
566 if (strncmp(flag, decl->u.flags.flags[i].name, len))
569 *val &= ~decl->u.flags.flags[i].mask;
570 *val |= decl->u.flags.flags[i].value;
578 static int parse_flags_option(struct isl_arg *decl, char **arg,
579 const char *prefix, void *opt)
586 flags = skip_name(decl, arg[0], prefix, 0, &has_argument);
590 if (!has_argument && !arg[1])
596 val = *(unsigned *)(((char *)opt) + decl->offset);
598 while ((comma = strchr(flags, ',')) != NULL) {
599 if (!set_flag(decl, &val, flags, comma - flags))
603 if (!set_flag(decl, &val, flags, strlen(flags)))
606 *(unsigned *)(((char *)opt) + decl->offset) = val;
608 return has_argument ? 1 : 2;
611 static int parse_bool_option(struct isl_arg *decl, const char *arg,
612 const char *prefix, void *opt)
614 if (skip_name(decl, arg, prefix, 0, NULL)) {
615 *(unsigned *)(((char *)opt) + decl->offset) = 1;
620 if (!decl->long_name)
623 if (strncmp(arg, "--", 2))
628 size_t prefix_len = strlen(prefix);
629 if (strncmp(arg, prefix, prefix_len) == 0 &&
630 arg[prefix_len] == '-') {
631 arg += prefix_len + 1;
636 if (strncmp(arg, "no-", 3))
641 size_t prefix_len = strlen(prefix);
642 if (strncmp(arg, prefix, prefix_len) == 0 &&
643 arg[prefix_len] == '-')
644 arg += prefix_len + 1;
647 if (!strcmp(arg, decl->long_name)) {
648 *(unsigned *)(((char *)opt) + decl->offset) = 0;
656 static int parse_str_option(struct isl_arg *decl, char **arg,
657 const char *prefix, void *opt)
661 char **p = (char **)(((char *)opt) + decl->offset);
663 s = skip_name(decl, arg[0], prefix, 0, &has_argument);
680 static int parse_long_option(struct isl_arg *decl, char **arg,
681 const char *prefix, void *opt)
686 long *p = (long *)(((char *)opt) + decl->offset);
688 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
693 long l = strtol(val, NULL, 0);
695 decl->u.l.set(opt, l);
702 long l = strtol(arg[1], &endptr, 0);
703 if (*endptr == '\0') {
705 decl->u.l.set(opt, l);
712 if (decl->u.l.default_value != decl->u.l.default_selected) {
714 decl->u.l.set(opt, decl->u.l.default_selected);
716 *p = decl->u.l.default_selected;
723 static int parse_ulong_option(struct isl_arg *decl, char **arg,
724 const char *prefix, void *opt)
729 unsigned long *p = (unsigned long *)(((char *)opt) + decl->offset);
731 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
736 *p = strtoul(val, NULL, 0);
741 unsigned long ul = strtoul(arg[1], &endptr, 0);
742 if (*endptr == '\0') {
751 static int parse_option(struct isl_arg *decl, char **arg,
752 const char *prefix, void *opt);
754 static int parse_child_option(struct isl_arg *decl, char **arg, void *opt)
756 return parse_option(decl->u.child.child, arg, decl->long_name,
757 *(void **)(((char *)opt) + decl->offset));
760 static int parse_option(struct isl_arg *decl, char **arg,
761 const char *prefix, void *opt)
765 for (i = 0; decl[i].type != isl_arg_end; ++i) {
767 switch (decl[i].type) {
769 parsed = parse_choice_option(&decl[i], arg, prefix, opt);
772 parsed = parse_flags_option(&decl[i], arg, prefix, opt);
775 parsed = parse_long_option(&decl[i], arg, prefix, opt);
778 parsed = parse_ulong_option(&decl[i], arg, prefix, opt);
781 parsed = parse_bool_option(&decl[i], *arg, prefix, opt);
784 parsed = parse_str_option(&decl[i], arg, prefix, opt);
787 parsed = parse_child_option(&decl[i], arg, opt);
791 case isl_arg_version:
802 static int any_version(struct isl_arg *decl)
806 for (i = 0; decl[i].type != isl_arg_end; ++i) {
807 switch (decl[i].type) {
808 case isl_arg_version:
811 if (any_version(decl[i].u.child.child))
822 static void print_version(struct isl_arg *decl)
826 for (i = 0; decl[i].type != isl_arg_end; ++i) {
827 switch (decl[i].type) {
828 case isl_arg_version:
829 decl[i].u.version.print_version();
832 print_version(decl[i].u.child.child);
840 static void print_version_and_exit(struct isl_arg *decl)
847 static int drop_argument(int argc, char **argv, int drop, int n)
849 for (; drop < argc; ++drop)
850 argv[drop] = argv[drop + n];
855 static int n_arg(struct isl_arg *arg)
860 for (i = 0; arg[i].type != isl_arg_end; ++i)
861 if (arg[i].type == isl_arg_arg)
867 int isl_arg_parse(struct isl_arg *arg, int argc, char **argv, void *opt,
876 for (i = 1; i < argc; ++i) {
877 if (strcmp(argv[i], "--help") == 0)
878 print_help_and_exit(arg, argv[0]);
881 for (i = 1; i < argc; ++i) {
882 if ((strcmp(argv[i], "--version") == 0 ||
883 strcmp(argv[i], "-V") == 0) && any_version(arg))
884 print_version_and_exit(arg);
887 while (argc > 1 + skip) {
889 if (argv[1 + skip][0] != '-')
891 parsed = parse_option(arg, &argv[1 + skip], NULL, opt);
893 argc = drop_argument(argc, argv, 1 + skip, parsed);
894 else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
895 fprintf(stderr, "%s: unrecognized option: %s\n",
896 prog_name(argv[0]), argv[1 + skip]);
902 if (ISL_FL_ISSET(flags, ISL_ARG_ALL) ? argc != 1 + n
903 : argc < 1 + skip + n) {
904 fprintf(stderr, "%s: expecting %d arguments\n",
905 prog_name(argv[0]), n);
909 for (i = 0; arg[i].type != isl_arg_end; ++i) {
911 if (arg[i].type != isl_arg_arg)
913 str = strdup(argv[1 + skip]);
914 *(const char **)(((char *)opt) + arg[i].offset) = str;
915 argc = drop_argument(argc, argv, 1 + skip, 1);