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);
117 case isl_arg_version:
124 static void free_args(struct isl_arg *arg, void *opt)
128 for (i = 0; arg[i].type != isl_arg_end; ++i) {
129 switch (arg[i].type) {
131 if (arg[i].offset == (size_t) -1)
132 free_args(arg[i].u.child.child, opt);
134 isl_arg_free(arg[i].u.child.child,
135 *(void **)(((char *)opt) + arg[i].offset));
139 free(*(char **)(((char *)opt) + arg[i].offset));
142 if (arg[i].u.user.clear)
143 arg[i].u.user.clear(((char *)opt) + arg[i].offset);
152 case isl_arg_version:
159 void isl_arg_free(struct isl_arg *arg, void *opt)
169 static int print_arg_help(struct isl_arg *decl, const char *prefix, int no)
173 if (!decl->long_name) {
174 printf(" -%c", decl->short_name);
178 if (decl->short_name) {
179 printf(" -%c, --", decl->short_name);
181 } else if (decl->flags & ISL_ARG_SINGLE_DASH) {
190 printf("%s-", prefix);
191 len += strlen(prefix) + 1;
197 printf("%s", decl->long_name);
198 len += strlen(decl->long_name);
200 while ((++decl)->type == isl_arg_alias) {
207 printf("%s", decl->long_name);
208 len += strlen(decl->long_name);
214 const void *isl_memrchr(const void *s, int c, size_t n)
223 static int print_help_msg(struct isl_arg *decl, int pos)
232 printf("\n%30s", "");
234 printf("%*s", 30 - pos, "");
239 const char *space = isl_memrchr(s, ' ', 45);
243 space = strchr(s + 45, ' ');
247 printf("%.*s", l, s);
250 printf("\n%30s", "");
257 static void print_default(struct isl_arg *decl, const char *def, int pos)
260 const char *default_prefix = "[default: ";
261 const char *default_suffix = "]";
264 len = strlen(default_prefix) + strlen(def) + strlen(default_suffix);
266 if (!decl->help_msg) {
268 printf("\n%30s", "");
270 printf("%*s", 30 - pos, "");
274 printf("\n%30s", "");
278 printf("%s%s%s", default_prefix, def, default_suffix);
281 static void print_default_choice(struct isl_arg *decl, int pos)
284 const char *s = "none";
286 for (i = 0; decl->u.choice.choice[i].name; ++i)
287 if (decl->u.choice.choice[i].value == decl->u.choice.default_value) {
288 s = decl->u.choice.choice[i].name;
292 print_default(decl, s, pos);
295 static void print_choice_help(struct isl_arg *decl, const char *prefix)
300 pos = print_arg_help(decl, prefix, 0);
304 for (i = 0; decl->u.choice.choice[i].name; ++i) {
309 printf("%s", decl->u.choice.choice[i].name);
310 pos += strlen(decl->u.choice.choice[i].name);
313 pos = print_help_msg(decl, pos);
314 print_default_choice(decl, pos);
319 static void print_default_flags(struct isl_arg *decl, int pos)
322 const char *default_prefix = "[default: ";
323 const char *default_suffix = "]";
324 int len = strlen(default_prefix) + strlen(default_suffix);
326 for (i = 0; decl->u.flags.flags[i].name; ++i)
327 if ((decl->u.flags.default_value & decl->u.flags.flags[i].mask) ==
328 decl->u.flags.flags[i].value)
329 len += strlen(decl->u.flags.flags[i].name);
331 if (!decl->help_msg) {
333 printf("\n%30s", "");
335 printf("%*s", 30 - pos, "");
339 printf("\n%30s", "");
343 printf("%s", default_prefix);
345 for (first = 1, i = 0; decl->u.flags.flags[i].name; ++i)
346 if ((decl->u.flags.default_value & decl->u.flags.flags[i].mask) ==
347 decl->u.flags.flags[i].value) {
350 printf("%s", decl->u.flags.flags[i].name);
354 printf("%s", default_suffix);
357 static void print_flags_help(struct isl_arg *decl, const char *prefix)
362 pos = print_arg_help(decl, prefix, 0);
366 for (i = 0; decl->u.flags.flags[i].name; ++i) {
372 decl->u.flags.flags[j].mask == decl->u.flags.flags[i].mask;
378 printf("%s", decl->u.flags.flags[j].name);
379 pos += strlen(decl->u.flags.flags[j].name);
384 pos = print_help_msg(decl, pos);
385 print_default_flags(decl, pos);
390 static void print_bool_help(struct isl_arg *decl, const char *prefix)
393 int no = decl->u.b.default_value == 1;
394 pos = print_arg_help(decl, prefix, no);
395 pos = print_help_msg(decl, pos);
396 if (decl->offset != (size_t) -1)
397 print_default(decl, no ? "yes" : "no", pos);
401 static int print_argument_name(struct isl_arg *decl, const char *name, int pos)
403 printf("%c<%s>", decl->long_name ? '=' : ' ', name);
404 return pos + 3 + strlen(name);
407 static void print_int_help(struct isl_arg *decl, const char *prefix)
411 pos = print_arg_help(decl, prefix, 0);
412 pos = print_argument_name(decl, decl->argument_name, pos);
413 pos = print_help_msg(decl, pos);
414 snprintf(val, sizeof(val), "%d", decl->u.i.default_value);
415 print_default(decl, val, pos);
419 static void print_long_help(struct isl_arg *decl, const char *prefix)
422 pos = print_arg_help(decl, prefix, 0);
423 if (decl->u.l.default_value != decl->u.l.default_selected) {
429 if (decl->u.l.default_value != decl->u.l.default_selected) {
433 print_help_msg(decl, pos);
437 static void print_ulong_help(struct isl_arg *decl, const char *prefix)
440 pos = print_arg_help(decl, prefix, 0);
443 print_help_msg(decl, pos);
447 static void print_str_help(struct isl_arg *decl, const char *prefix)
450 const char *a = decl->argument_name ? decl->argument_name : "string";
451 pos = print_arg_help(decl, prefix, 0);
452 pos = print_argument_name(decl, a, pos);
453 pos = print_help_msg(decl, pos);
454 if (decl->u.str.default_value)
455 print_default(decl, decl->u.str.default_value, pos);
459 static void print_help(struct isl_arg *arg, const char *prefix)
463 for (i = 0; arg[i].type != isl_arg_end; ++i) {
464 if (arg[i].flags & ISL_ARG_HIDDEN)
466 switch (arg[i].type) {
468 print_flags_help(&arg[i], prefix);
471 print_choice_help(&arg[i], prefix);
474 print_bool_help(&arg[i], prefix);
477 print_int_help(&arg[i], prefix);
480 print_long_help(&arg[i], prefix);
483 print_ulong_help(&arg[i], prefix);
486 print_str_help(&arg[i], prefix);
489 case isl_arg_version:
498 for (i = 0; arg[i].type != isl_arg_end; ++i) {
499 if (arg[i].type != isl_arg_child)
501 if (arg[i].flags & ISL_ARG_HIDDEN)
506 printf(" %s\n", arg[i].help_msg);
507 print_help(arg[i].u.child.child, arg[i].long_name);
511 static const char *prog_name(const char *prog)
515 slash = strrchr(prog, '/');
518 if (strncmp(prog, "lt-", 3) == 0)
524 static int any_version(struct isl_arg *decl)
528 for (i = 0; decl[i].type != isl_arg_end; ++i) {
529 switch (decl[i].type) {
530 case isl_arg_version:
533 if (any_version(decl[i].u.child.child))
544 static void print_help_and_exit(struct isl_arg *arg, const char *prog)
548 printf("Usage: %s [OPTION...]", prog_name(prog));
550 for (i = 0; arg[i].type != isl_arg_end; ++i)
551 if (arg[i].type == isl_arg_arg)
552 printf(" %s", arg[i].argument_name);
556 print_help(arg, NULL);
558 if (any_version(arg))
559 printf(" -V, --version\n");
560 print_bool_help(help_arg, NULL);
565 static int match_long_name(struct isl_arg *decl,
566 const char *start, const char *end)
569 if (end - start == strlen(decl->long_name) &&
570 !strncmp(start, decl->long_name, end - start))
572 } while ((++decl)->type == isl_arg_alias);
577 static const char *skip_dash_dash(struct isl_arg *decl, const char *arg)
579 if (!strncmp(arg, "--", 2))
581 if ((decl->flags & ISL_ARG_SINGLE_DASH) && arg[0] == '-')
586 static const char *skip_name(struct isl_arg *decl, const char *arg,
587 const char *prefix, int need_argument, int *has_argument)
593 if (arg[0] == '-' && arg[1] && arg[1] == decl->short_name) {
594 if (need_argument && !arg[2])
597 *has_argument = arg[2] != '\0';
600 if (!decl->long_name)
603 name = skip_dash_dash(decl, arg);
607 equal = strchr(name, '=');
608 if (need_argument && !equal)
612 *has_argument = !!equal;
613 end = equal ? equal : name + strlen(name);
616 size_t prefix_len = strlen(prefix);
617 if (strncmp(name, prefix, prefix_len) == 0 &&
618 name[prefix_len] == '-')
619 name += prefix_len + 1;
622 if (!match_long_name(decl, name, end))
625 return equal ? equal + 1 : end;
628 static int parse_choice_option(struct isl_arg *decl, char **arg,
629 const char *prefix, void *opt)
635 choice = skip_name(decl, arg[0], prefix, 0, &has_argument);
639 if (!has_argument && (!arg[1] || arg[1][0] == '-')) {
640 unsigned u = decl->u.choice.default_selected;
641 if (decl->u.choice.set)
642 decl->u.choice.set(opt, u);
644 *(unsigned *)(((char *)opt) + decl->offset) = u;
652 for (i = 0; decl->u.choice.choice[i].name; ++i) {
655 if (strcmp(choice, decl->u.choice.choice[i].name))
658 u = decl->u.choice.choice[i].value;
659 if (decl->u.choice.set)
660 decl->u.choice.set(opt, u);
662 *(unsigned *)(((char *)opt) + decl->offset) = u;
664 return has_argument ? 1 : 2;
670 static int set_flag(struct isl_arg *decl, unsigned *val, const char *flag,
675 for (i = 0; decl->u.flags.flags[i].name; ++i) {
676 if (strncmp(flag, decl->u.flags.flags[i].name, len))
679 *val &= ~decl->u.flags.flags[i].mask;
680 *val |= decl->u.flags.flags[i].value;
688 static int parse_flags_option(struct isl_arg *decl, char **arg,
689 const char *prefix, void *opt)
696 flags = skip_name(decl, arg[0], prefix, 0, &has_argument);
700 if (!has_argument && !arg[1])
706 val = *(unsigned *)(((char *)opt) + decl->offset);
708 while ((comma = strchr(flags, ',')) != NULL) {
709 if (!set_flag(decl, &val, flags, comma - flags))
713 if (!set_flag(decl, &val, flags, strlen(flags)))
716 *(unsigned *)(((char *)opt) + decl->offset) = val;
718 return has_argument ? 1 : 2;
721 static int parse_bool_option(struct isl_arg *decl, char **arg,
722 const char *prefix, void *opt)
725 unsigned *p = (unsigned *)(((char *)opt) + decl->offset);
727 if (skip_name(decl, arg[0], prefix, 0, NULL)) {
728 if ((decl->flags && ISL_ARG_BOOL_ARG) && arg[1]) {
730 int val = strtol(arg[1], &endptr, 0);
731 if (*endptr == '\0' && (val == 0 || val == 1)) {
733 decl->u.b.set(opt, val);
734 else if (decl->offset != (size_t) -1)
740 decl->u.b.set(opt, 1);
741 else if (decl->offset != (size_t) -1)
747 if (!decl->long_name)
750 name = skip_dash_dash(decl, arg[0]);
755 size_t prefix_len = strlen(prefix);
756 if (strncmp(name, prefix, prefix_len) == 0 &&
757 name[prefix_len] == '-') {
758 name += prefix_len + 1;
763 if (strncmp(name, "no-", 3))
768 size_t prefix_len = strlen(prefix);
769 if (strncmp(name, prefix, prefix_len) == 0 &&
770 name[prefix_len] == '-')
771 name += prefix_len + 1;
774 if (match_long_name(decl, name, name + strlen(name))) {
776 decl->u.b.set(opt, 0);
777 else if (decl->offset != (size_t) -1)
786 static int parse_str_option(struct isl_arg *decl, char **arg,
787 const char *prefix, void *opt)
791 char **p = (char **)(((char *)opt) + decl->offset);
793 s = skip_name(decl, arg[0], prefix, 0, &has_argument);
812 static int parse_int_option(struct isl_arg *decl, char **arg,
813 const char *prefix, void *opt)
818 int *p = (int *)(((char *)opt) + decl->offset);
820 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
830 int i = strtol(arg[1], &endptr, 0);
831 if (*endptr == '\0') {
840 static int parse_long_option(struct isl_arg *decl, char **arg,
841 const char *prefix, void *opt)
846 long *p = (long *)(((char *)opt) + decl->offset);
848 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
853 long l = strtol(val, NULL, 0);
855 decl->u.l.set(opt, l);
862 long l = strtol(arg[1], &endptr, 0);
863 if (*endptr == '\0') {
865 decl->u.l.set(opt, l);
872 if (decl->u.l.default_value != decl->u.l.default_selected) {
874 decl->u.l.set(opt, decl->u.l.default_selected);
876 *p = decl->u.l.default_selected;
883 static int parse_ulong_option(struct isl_arg *decl, char **arg,
884 const char *prefix, void *opt)
889 unsigned long *p = (unsigned long *)(((char *)opt) + decl->offset);
891 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
896 *p = strtoul(val, NULL, 0);
901 unsigned long ul = strtoul(arg[1], &endptr, 0);
902 if (*endptr == '\0') {
911 static int parse_option(struct isl_arg *decl, char **arg,
912 const char *prefix, void *opt);
914 static int parse_child_option(struct isl_arg *decl, char **arg,
915 const char *prefix, void *opt)
919 if (decl->offset == (size_t) -1)
922 child = *(void **)(((char *)opt) + decl->offset);
923 prefix = decl->long_name;
925 return parse_option(decl->u.child.child, arg, prefix, child);
928 static int parse_option(struct isl_arg *decl, char **arg,
929 const char *prefix, void *opt)
933 for (i = 0; decl[i].type != isl_arg_end; ++i) {
935 switch (decl[i].type) {
937 parsed = parse_choice_option(&decl[i], arg, prefix, opt);
940 parsed = parse_flags_option(&decl[i], arg, prefix, opt);
943 parsed = parse_int_option(&decl[i], arg, prefix, opt);
946 parsed = parse_long_option(&decl[i], arg, prefix, opt);
949 parsed = parse_ulong_option(&decl[i], arg, prefix, opt);
952 parsed = parse_bool_option(&decl[i], arg, prefix, opt);
955 parsed = parse_str_option(&decl[i], arg, prefix, opt);
958 parsed = parse_child_option(&decl[i], arg, prefix, opt);
963 case isl_arg_version:
974 static void print_version(struct isl_arg *decl)
978 for (i = 0; decl[i].type != isl_arg_end; ++i) {
979 switch (decl[i].type) {
980 case isl_arg_version:
981 decl[i].u.version.print_version();
984 print_version(decl[i].u.child.child);
992 static void print_version_and_exit(struct isl_arg *decl)
999 static int drop_argument(int argc, char **argv, int drop, int n)
1001 for (; drop < argc; ++drop)
1002 argv[drop] = argv[drop + n];
1007 static int n_arg(struct isl_arg *arg)
1012 for (i = 0; arg[i].type != isl_arg_end; ++i)
1013 if (arg[i].type == isl_arg_arg)
1019 static int next_arg(struct isl_arg *arg, int a)
1021 for (++a; arg[a].type != isl_arg_end; ++a)
1022 if (arg[a].type == isl_arg_arg)
1028 int isl_arg_parse(struct isl_arg *arg, int argc, char **argv, void *opt,
1038 for (i = 1; i < argc; ++i) {
1039 if (strcmp(argv[i], "--help") == 0)
1040 print_help_and_exit(arg, argv[0]);
1043 for (i = 1; i < argc; ++i) {
1044 if ((strcmp(argv[i], "--version") == 0 ||
1045 strcmp(argv[i], "-V") == 0) && any_version(arg))
1046 print_version_and_exit(arg);
1049 while (argc > 1 + skip) {
1051 if (argv[1 + skip][0] != '-') {
1052 a = next_arg(arg, a);
1055 p = (char **)(((char *)opt)+arg[a].offset);
1057 *p = strdup(argv[1 + skip]);
1058 argc = drop_argument(argc, argv, 1 + skip, 1);
1060 } else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
1061 fprintf(stderr, "%s: extra argument: %s\n",
1062 prog_name(argv[0]), argv[1 + skip]);
1068 parsed = parse_option(arg, &argv[1 + skip], NULL, opt);
1070 argc = drop_argument(argc, argv, 1 + skip, parsed);
1071 else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
1072 fprintf(stderr, "%s: unrecognized option: %s\n",
1073 prog_name(argv[0]), argv[1 + skip]);
1080 fprintf(stderr, "%s: expecting %d more argument(s)\n",
1081 prog_name(argv[0]), n);