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 struct isl_arg help_arg[] = {
18 ISL_ARG_PHANTOM_BOOL('h', "help", NULL, "print this help, then exit")
22 static void set_default_choice(struct isl_arg *arg, void *opt)
24 *(unsigned *)(((char *)opt) + arg->offset) = arg->u.choice.default_value;
27 static void set_default_flags(struct isl_arg *arg, void *opt)
29 *(unsigned *)(((char *)opt) + arg->offset) = arg->u.flags.default_value;
32 static void set_default_bool(struct isl_arg *arg, void *opt)
34 if (arg->offset == (size_t) -1)
36 *(unsigned *)(((char *)opt) + arg->offset) = arg->u.b.default_value;
39 static void set_default_child(struct isl_arg *arg, void *opt)
43 if (arg->offset == (size_t) -1)
46 child = calloc(1, arg->u.child.size);
47 *(void **)(((char *)opt) + arg->offset) = child;
51 isl_arg_set_defaults(arg->u.child.child, child);
54 static void set_default_user(struct isl_arg *arg, void *opt)
56 arg->u.user.init(((char *)opt) + arg->offset);
59 static void set_default_int(struct isl_arg *arg, void *opt)
61 *(int *)(((char *)opt) + arg->offset) = arg->u.i.default_value;
64 static void set_default_long(struct isl_arg *arg, void *opt)
66 *(long *)(((char *)opt) + arg->offset) = arg->u.l.default_value;
69 static void set_default_ulong(struct isl_arg *arg, void *opt)
71 *(unsigned long *)(((char *)opt) + arg->offset) = arg->u.ul.default_value;
74 static void set_default_str(struct isl_arg *arg, void *opt)
76 const char *str = NULL;
77 if (arg->u.str.default_value)
78 str = strdup(arg->u.str.default_value);
79 *(const char **)(((char *)opt) + arg->offset) = str;
82 void isl_arg_set_defaults(struct isl_arg *arg, void *opt)
86 for (i = 0; arg[i].type != isl_arg_end; ++i) {
87 switch (arg[i].type) {
89 set_default_choice(&arg[i], opt);
92 set_default_flags(&arg[i], opt);
95 set_default_bool(&arg[i], opt);
98 set_default_child(&arg[i], opt);
101 set_default_user(&arg[i], opt);
104 set_default_int(&arg[i], opt);
107 set_default_long(&arg[i], opt);
110 set_default_ulong(&arg[i], opt);
114 set_default_str(&arg[i], opt);
118 case isl_arg_version:
125 static void free_args(struct isl_arg *arg, void *opt)
129 for (i = 0; arg[i].type != isl_arg_end; ++i) {
130 switch (arg[i].type) {
132 if (arg[i].offset == (size_t) -1)
133 free_args(arg[i].u.child.child, opt);
135 isl_arg_free(arg[i].u.child.child,
136 *(void **)(((char *)opt) + arg[i].offset));
140 free(*(char **)(((char *)opt) + arg[i].offset));
143 if (arg[i].u.user.clear)
144 arg[i].u.user.clear(((char *)opt) + arg[i].offset);
153 case isl_arg_version:
161 void isl_arg_free(struct isl_arg *arg, void *opt)
171 static int print_arg_help(struct isl_arg *decl, const char *prefix, int no)
175 if (!decl->long_name) {
176 printf(" -%c", decl->short_name);
180 if (decl->short_name) {
181 printf(" -%c, --", decl->short_name);
183 } else if (decl->flags & ISL_ARG_SINGLE_DASH) {
192 printf("%s-", prefix);
193 len += strlen(prefix) + 1;
199 printf("%s", decl->long_name);
200 len += strlen(decl->long_name);
202 while ((++decl)->type == isl_arg_alias) {
209 printf("%s", decl->long_name);
210 len += strlen(decl->long_name);
216 const void *isl_memrchr(const void *s, int c, size_t n)
225 static int wrap_msg(const char *s, int indent, int pos)
228 int wrap_len = 75 - indent;
230 if (pos + 1 >= indent)
231 printf("\n%*s", indent, "");
233 printf("%*s", indent - pos, "");
236 while (len > wrap_len) {
237 const char *space = isl_memrchr(s, ' ', wrap_len);
241 space = strchr(s + wrap_len, ' ');
245 printf("%.*s", l, s);
248 printf("\n%*s", indent, "");
255 static int print_help_msg(struct isl_arg *decl, int pos)
260 return wrap_msg(decl->help_msg, 30, pos);
263 static void print_default(struct isl_arg *decl, const char *def, int pos)
266 const char *default_prefix = "[default: ";
267 const char *default_suffix = "]";
270 len = strlen(default_prefix) + strlen(def) + strlen(default_suffix);
272 if (!decl->help_msg) {
274 printf("\n%30s", "");
276 printf("%*s", 30 - pos, "");
280 printf("\n%30s", "");
284 printf("%s%s%s", default_prefix, def, default_suffix);
287 static void print_default_choice(struct isl_arg *decl, int pos)
290 const char *s = "none";
292 for (i = 0; decl->u.choice.choice[i].name; ++i)
293 if (decl->u.choice.choice[i].value == decl->u.choice.default_value) {
294 s = decl->u.choice.choice[i].name;
298 print_default(decl, s, pos);
301 static void print_choice_help(struct isl_arg *decl, const char *prefix)
306 pos = print_arg_help(decl, prefix, 0);
310 for (i = 0; decl->u.choice.choice[i].name; ++i) {
315 printf("%s", decl->u.choice.choice[i].name);
316 pos += strlen(decl->u.choice.choice[i].name);
319 pos = print_help_msg(decl, pos);
320 print_default_choice(decl, pos);
325 static void print_default_flags(struct isl_arg *decl, int pos)
328 const char *default_prefix = "[default: ";
329 const char *default_suffix = "]";
330 int len = strlen(default_prefix) + strlen(default_suffix);
332 for (i = 0; decl->u.flags.flags[i].name; ++i)
333 if ((decl->u.flags.default_value & decl->u.flags.flags[i].mask) ==
334 decl->u.flags.flags[i].value)
335 len += strlen(decl->u.flags.flags[i].name);
337 if (!decl->help_msg) {
339 printf("\n%30s", "");
341 printf("%*s", 30 - pos, "");
345 printf("\n%30s", "");
349 printf("%s", default_prefix);
351 for (first = 1, i = 0; decl->u.flags.flags[i].name; ++i)
352 if ((decl->u.flags.default_value & decl->u.flags.flags[i].mask) ==
353 decl->u.flags.flags[i].value) {
356 printf("%s", decl->u.flags.flags[i].name);
360 printf("%s", default_suffix);
363 static void print_flags_help(struct isl_arg *decl, const char *prefix)
368 pos = print_arg_help(decl, prefix, 0);
372 for (i = 0; decl->u.flags.flags[i].name; ++i) {
378 decl->u.flags.flags[j].mask == decl->u.flags.flags[i].mask;
384 printf("%s", decl->u.flags.flags[j].name);
385 pos += strlen(decl->u.flags.flags[j].name);
390 pos = print_help_msg(decl, pos);
391 print_default_flags(decl, pos);
396 static void print_bool_help(struct isl_arg *decl, const char *prefix)
399 int no = decl->u.b.default_value == 1;
400 pos = print_arg_help(decl, prefix, no);
401 pos = print_help_msg(decl, pos);
402 if (decl->offset != (size_t) -1)
403 print_default(decl, no ? "yes" : "no", pos);
407 static int print_argument_name(struct isl_arg *decl, const char *name, int pos)
409 printf("%c<%s>", decl->long_name ? '=' : ' ', name);
410 return pos + 3 + strlen(name);
413 static void print_int_help(struct isl_arg *decl, const char *prefix)
417 pos = print_arg_help(decl, prefix, 0);
418 pos = print_argument_name(decl, decl->argument_name, pos);
419 pos = print_help_msg(decl, pos);
420 snprintf(val, sizeof(val), "%d", decl->u.i.default_value);
421 print_default(decl, val, pos);
425 static void print_long_help(struct isl_arg *decl, const char *prefix)
428 pos = print_arg_help(decl, prefix, 0);
429 if (decl->u.l.default_value != decl->u.l.default_selected) {
435 if (decl->u.l.default_value != decl->u.l.default_selected) {
439 print_help_msg(decl, pos);
443 static void print_ulong_help(struct isl_arg *decl, const char *prefix)
446 pos = print_arg_help(decl, prefix, 0);
449 print_help_msg(decl, pos);
453 static void print_str_help(struct isl_arg *decl, const char *prefix)
456 const char *a = decl->argument_name ? decl->argument_name : "string";
457 pos = print_arg_help(decl, prefix, 0);
458 pos = print_argument_name(decl, a, pos);
459 pos = print_help_msg(decl, pos);
460 if (decl->u.str.default_value)
461 print_default(decl, decl->u.str.default_value, pos);
465 static void print_help(struct isl_arg *arg, const char *prefix)
470 for (i = 0; arg[i].type != isl_arg_end; ++i) {
471 if (arg[i].flags & ISL_ARG_HIDDEN)
473 switch (arg[i].type) {
475 print_flags_help(&arg[i], prefix);
479 print_choice_help(&arg[i], prefix);
483 print_bool_help(&arg[i], prefix);
487 print_int_help(&arg[i], prefix);
491 print_long_help(&arg[i], prefix);
495 print_ulong_help(&arg[i], prefix);
499 print_str_help(&arg[i], prefix);
503 case isl_arg_version:
513 for (i = 0; arg[i].type != isl_arg_end; ++i) {
514 if (arg[i].type != isl_arg_child)
516 if (arg[i].flags & ISL_ARG_HIDDEN)
522 printf(" %s\n", arg[i].help_msg);
523 print_help(arg[i].u.child.child, arg[i].long_name);
528 static const char *prog_name(const char *prog)
532 slash = strrchr(prog, '/');
535 if (strncmp(prog, "lt-", 3) == 0)
541 static int any_version(struct isl_arg *decl)
545 for (i = 0; decl[i].type != isl_arg_end; ++i) {
546 switch (decl[i].type) {
547 case isl_arg_version:
550 if (any_version(decl[i].u.child.child))
561 static void print_help_and_exit(struct isl_arg *arg, const char *prog)
565 printf("Usage: %s [OPTION...]", prog_name(prog));
567 for (i = 0; arg[i].type != isl_arg_end; ++i)
568 if (arg[i].type == isl_arg_arg)
569 printf(" %s", arg[i].argument_name);
573 print_help(arg, NULL);
575 if (any_version(arg))
576 printf(" -V, --version\n");
577 print_bool_help(help_arg, NULL);
579 for (i = 0; arg[i].type != isl_arg_end; ++i) {
580 if (arg[i].type != isl_arg_footer)
582 wrap_msg(arg[i].help_msg, 0, 0);
589 static int match_long_name(struct isl_arg *decl,
590 const char *start, const char *end)
593 if (end - start == strlen(decl->long_name) &&
594 !strncmp(start, decl->long_name, end - start))
596 } while ((++decl)->type == isl_arg_alias);
601 static const char *skip_dash_dash(struct isl_arg *decl, const char *arg)
603 if (!strncmp(arg, "--", 2))
605 if ((decl->flags & ISL_ARG_SINGLE_DASH) && arg[0] == '-')
610 static const char *skip_name(struct isl_arg *decl, const char *arg,
611 const char *prefix, int need_argument, int *has_argument)
617 if (arg[0] == '-' && arg[1] && arg[1] == decl->short_name) {
618 if (need_argument && !arg[2])
621 *has_argument = arg[2] != '\0';
624 if (!decl->long_name)
627 name = skip_dash_dash(decl, arg);
631 equal = strchr(name, '=');
632 if (need_argument && !equal)
636 *has_argument = !!equal;
637 end = equal ? equal : name + strlen(name);
640 size_t prefix_len = strlen(prefix);
641 if (strncmp(name, prefix, prefix_len) == 0 &&
642 name[prefix_len] == '-')
643 name += prefix_len + 1;
646 if (!match_long_name(decl, name, end))
649 return equal ? equal + 1 : end;
652 static int parse_choice_option(struct isl_arg *decl, char **arg,
653 const char *prefix, void *opt)
659 choice = skip_name(decl, arg[0], prefix, 0, &has_argument);
663 if (!has_argument && (!arg[1] || arg[1][0] == '-')) {
664 unsigned u = decl->u.choice.default_selected;
665 if (decl->u.choice.set)
666 decl->u.choice.set(opt, u);
668 *(unsigned *)(((char *)opt) + decl->offset) = u;
676 for (i = 0; decl->u.choice.choice[i].name; ++i) {
679 if (strcmp(choice, decl->u.choice.choice[i].name))
682 u = decl->u.choice.choice[i].value;
683 if (decl->u.choice.set)
684 decl->u.choice.set(opt, u);
686 *(unsigned *)(((char *)opt) + decl->offset) = u;
688 return has_argument ? 1 : 2;
694 static int set_flag(struct isl_arg *decl, unsigned *val, const char *flag,
699 for (i = 0; decl->u.flags.flags[i].name; ++i) {
700 if (strncmp(flag, decl->u.flags.flags[i].name, len))
703 *val &= ~decl->u.flags.flags[i].mask;
704 *val |= decl->u.flags.flags[i].value;
712 static int parse_flags_option(struct isl_arg *decl, char **arg,
713 const char *prefix, void *opt)
720 flags = skip_name(decl, arg[0], prefix, 0, &has_argument);
724 if (!has_argument && !arg[1])
730 val = *(unsigned *)(((char *)opt) + decl->offset);
732 while ((comma = strchr(flags, ',')) != NULL) {
733 if (!set_flag(decl, &val, flags, comma - flags))
737 if (!set_flag(decl, &val, flags, strlen(flags)))
740 *(unsigned *)(((char *)opt) + decl->offset) = val;
742 return has_argument ? 1 : 2;
745 static int parse_bool_option(struct isl_arg *decl, char **arg,
746 const char *prefix, void *opt)
749 unsigned *p = (unsigned *)(((char *)opt) + decl->offset);
751 if (skip_name(decl, arg[0], prefix, 0, NULL)) {
752 if ((decl->flags && ISL_ARG_BOOL_ARG) && arg[1]) {
754 int val = strtol(arg[1], &endptr, 0);
755 if (*endptr == '\0' && (val == 0 || val == 1)) {
757 decl->u.b.set(opt, val);
758 else if (decl->offset != (size_t) -1)
764 decl->u.b.set(opt, 1);
765 else if (decl->offset != (size_t) -1)
771 if (!decl->long_name)
774 name = skip_dash_dash(decl, arg[0]);
779 size_t prefix_len = strlen(prefix);
780 if (strncmp(name, prefix, prefix_len) == 0 &&
781 name[prefix_len] == '-') {
782 name += prefix_len + 1;
787 if (strncmp(name, "no-", 3))
792 size_t prefix_len = strlen(prefix);
793 if (strncmp(name, prefix, prefix_len) == 0 &&
794 name[prefix_len] == '-')
795 name += prefix_len + 1;
798 if (match_long_name(decl, name, name + strlen(name))) {
800 decl->u.b.set(opt, 0);
801 else if (decl->offset != (size_t) -1)
810 static int parse_str_option(struct isl_arg *decl, char **arg,
811 const char *prefix, void *opt)
815 char **p = (char **)(((char *)opt) + decl->offset);
817 s = skip_name(decl, arg[0], prefix, 0, &has_argument);
836 static int parse_int_option(struct isl_arg *decl, char **arg,
837 const char *prefix, void *opt)
842 int *p = (int *)(((char *)opt) + decl->offset);
844 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
854 int i = strtol(arg[1], &endptr, 0);
855 if (*endptr == '\0') {
864 static int parse_long_option(struct isl_arg *decl, char **arg,
865 const char *prefix, void *opt)
870 long *p = (long *)(((char *)opt) + decl->offset);
872 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
877 long l = strtol(val, NULL, 0);
879 decl->u.l.set(opt, l);
886 long l = strtol(arg[1], &endptr, 0);
887 if (*endptr == '\0') {
889 decl->u.l.set(opt, l);
896 if (decl->u.l.default_value != decl->u.l.default_selected) {
898 decl->u.l.set(opt, decl->u.l.default_selected);
900 *p = decl->u.l.default_selected;
907 static int parse_ulong_option(struct isl_arg *decl, char **arg,
908 const char *prefix, void *opt)
913 unsigned long *p = (unsigned long *)(((char *)opt) + decl->offset);
915 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
920 *p = strtoul(val, NULL, 0);
925 unsigned long ul = strtoul(arg[1], &endptr, 0);
926 if (*endptr == '\0') {
935 static int parse_option(struct isl_arg *decl, char **arg,
936 const char *prefix, void *opt);
938 static int parse_child_option(struct isl_arg *decl, char **arg,
939 const char *prefix, void *opt)
943 if (decl->offset == (size_t) -1)
946 child = *(void **)(((char *)opt) + decl->offset);
947 prefix = decl->long_name;
949 return parse_option(decl->u.child.child, arg, prefix, child);
952 static int parse_option(struct isl_arg *decl, char **arg,
953 const char *prefix, void *opt)
957 for (i = 0; decl[i].type != isl_arg_end; ++i) {
959 switch (decl[i].type) {
961 parsed = parse_choice_option(&decl[i], arg, prefix, opt);
964 parsed = parse_flags_option(&decl[i], arg, prefix, opt);
967 parsed = parse_int_option(&decl[i], arg, prefix, opt);
970 parsed = parse_long_option(&decl[i], arg, prefix, opt);
973 parsed = parse_ulong_option(&decl[i], arg, prefix, opt);
976 parsed = parse_bool_option(&decl[i], arg, prefix, opt);
979 parsed = parse_str_option(&decl[i], arg, prefix, opt);
982 parsed = parse_child_option(&decl[i], arg, prefix, opt);
988 case isl_arg_version:
999 static void print_version(struct isl_arg *decl)
1003 for (i = 0; decl[i].type != isl_arg_end; ++i) {
1004 switch (decl[i].type) {
1005 case isl_arg_version:
1006 decl[i].u.version.print_version();
1009 print_version(decl[i].u.child.child);
1017 static void print_version_and_exit(struct isl_arg *decl)
1019 print_version(decl);
1024 static int drop_argument(int argc, char **argv, int drop, int n)
1026 for (; drop < argc; ++drop)
1027 argv[drop] = argv[drop + n];
1032 static int n_arg(struct isl_arg *arg)
1037 for (i = 0; arg[i].type != isl_arg_end; ++i)
1038 if (arg[i].type == isl_arg_arg)
1044 static int next_arg(struct isl_arg *arg, int a)
1046 for (++a; arg[a].type != isl_arg_end; ++a)
1047 if (arg[a].type == isl_arg_arg)
1053 int isl_arg_parse(struct isl_arg *arg, int argc, char **argv, void *opt,
1063 for (i = 1; i < argc; ++i) {
1064 if (strcmp(argv[i], "--help") == 0)
1065 print_help_and_exit(arg, argv[0]);
1068 for (i = 1; i < argc; ++i) {
1069 if ((strcmp(argv[i], "--version") == 0 ||
1070 strcmp(argv[i], "-V") == 0) && any_version(arg))
1071 print_version_and_exit(arg);
1074 while (argc > 1 + skip) {
1076 if (argv[1 + skip][0] != '-') {
1077 a = next_arg(arg, a);
1080 p = (char **)(((char *)opt)+arg[a].offset);
1082 *p = strdup(argv[1 + skip]);
1083 argc = drop_argument(argc, argv, 1 + skip, 1);
1085 } else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
1086 fprintf(stderr, "%s: extra argument: %s\n",
1087 prog_name(argv[0]), argv[1 + skip]);
1093 parsed = parse_option(arg, &argv[1 + skip], NULL, opt);
1095 argc = drop_argument(argc, argv, 1 + skip, parsed);
1096 else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
1097 fprintf(stderr, "%s: unrecognized option: %s\n",
1098 prog_name(argv[0]), argv[1 + skip]);
1105 fprintf(stderr, "%s: expecting %d more argument(s)\n",
1106 prog_name(argv[0]), n);