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)
464 for (i = 0; arg[i].type != isl_arg_end; ++i) {
465 if (arg[i].flags & ISL_ARG_HIDDEN)
467 switch (arg[i].type) {
469 print_flags_help(&arg[i], prefix);
473 print_choice_help(&arg[i], prefix);
477 print_bool_help(&arg[i], prefix);
481 print_int_help(&arg[i], prefix);
485 print_long_help(&arg[i], prefix);
489 print_ulong_help(&arg[i], prefix);
493 print_str_help(&arg[i], prefix);
497 case isl_arg_version:
506 for (i = 0; arg[i].type != isl_arg_end; ++i) {
507 if (arg[i].type != isl_arg_child)
509 if (arg[i].flags & ISL_ARG_HIDDEN)
515 printf(" %s\n", arg[i].help_msg);
516 print_help(arg[i].u.child.child, arg[i].long_name);
521 static const char *prog_name(const char *prog)
525 slash = strrchr(prog, '/');
528 if (strncmp(prog, "lt-", 3) == 0)
534 static int any_version(struct isl_arg *decl)
538 for (i = 0; decl[i].type != isl_arg_end; ++i) {
539 switch (decl[i].type) {
540 case isl_arg_version:
543 if (any_version(decl[i].u.child.child))
554 static void print_help_and_exit(struct isl_arg *arg, const char *prog)
558 printf("Usage: %s [OPTION...]", prog_name(prog));
560 for (i = 0; arg[i].type != isl_arg_end; ++i)
561 if (arg[i].type == isl_arg_arg)
562 printf(" %s", arg[i].argument_name);
566 print_help(arg, NULL);
568 if (any_version(arg))
569 printf(" -V, --version\n");
570 print_bool_help(help_arg, NULL);
575 static int match_long_name(struct isl_arg *decl,
576 const char *start, const char *end)
579 if (end - start == strlen(decl->long_name) &&
580 !strncmp(start, decl->long_name, end - start))
582 } while ((++decl)->type == isl_arg_alias);
587 static const char *skip_dash_dash(struct isl_arg *decl, const char *arg)
589 if (!strncmp(arg, "--", 2))
591 if ((decl->flags & ISL_ARG_SINGLE_DASH) && arg[0] == '-')
596 static const char *skip_name(struct isl_arg *decl, const char *arg,
597 const char *prefix, int need_argument, int *has_argument)
603 if (arg[0] == '-' && arg[1] && arg[1] == decl->short_name) {
604 if (need_argument && !arg[2])
607 *has_argument = arg[2] != '\0';
610 if (!decl->long_name)
613 name = skip_dash_dash(decl, arg);
617 equal = strchr(name, '=');
618 if (need_argument && !equal)
622 *has_argument = !!equal;
623 end = equal ? equal : name + strlen(name);
626 size_t prefix_len = strlen(prefix);
627 if (strncmp(name, prefix, prefix_len) == 0 &&
628 name[prefix_len] == '-')
629 name += prefix_len + 1;
632 if (!match_long_name(decl, name, end))
635 return equal ? equal + 1 : end;
638 static int parse_choice_option(struct isl_arg *decl, char **arg,
639 const char *prefix, void *opt)
645 choice = skip_name(decl, arg[0], prefix, 0, &has_argument);
649 if (!has_argument && (!arg[1] || arg[1][0] == '-')) {
650 unsigned u = decl->u.choice.default_selected;
651 if (decl->u.choice.set)
652 decl->u.choice.set(opt, u);
654 *(unsigned *)(((char *)opt) + decl->offset) = u;
662 for (i = 0; decl->u.choice.choice[i].name; ++i) {
665 if (strcmp(choice, decl->u.choice.choice[i].name))
668 u = decl->u.choice.choice[i].value;
669 if (decl->u.choice.set)
670 decl->u.choice.set(opt, u);
672 *(unsigned *)(((char *)opt) + decl->offset) = u;
674 return has_argument ? 1 : 2;
680 static int set_flag(struct isl_arg *decl, unsigned *val, const char *flag,
685 for (i = 0; decl->u.flags.flags[i].name; ++i) {
686 if (strncmp(flag, decl->u.flags.flags[i].name, len))
689 *val &= ~decl->u.flags.flags[i].mask;
690 *val |= decl->u.flags.flags[i].value;
698 static int parse_flags_option(struct isl_arg *decl, char **arg,
699 const char *prefix, void *opt)
706 flags = skip_name(decl, arg[0], prefix, 0, &has_argument);
710 if (!has_argument && !arg[1])
716 val = *(unsigned *)(((char *)opt) + decl->offset);
718 while ((comma = strchr(flags, ',')) != NULL) {
719 if (!set_flag(decl, &val, flags, comma - flags))
723 if (!set_flag(decl, &val, flags, strlen(flags)))
726 *(unsigned *)(((char *)opt) + decl->offset) = val;
728 return has_argument ? 1 : 2;
731 static int parse_bool_option(struct isl_arg *decl, char **arg,
732 const char *prefix, void *opt)
735 unsigned *p = (unsigned *)(((char *)opt) + decl->offset);
737 if (skip_name(decl, arg[0], prefix, 0, NULL)) {
738 if ((decl->flags && ISL_ARG_BOOL_ARG) && arg[1]) {
740 int val = strtol(arg[1], &endptr, 0);
741 if (*endptr == '\0' && (val == 0 || val == 1)) {
743 decl->u.b.set(opt, val);
744 else if (decl->offset != (size_t) -1)
750 decl->u.b.set(opt, 1);
751 else if (decl->offset != (size_t) -1)
757 if (!decl->long_name)
760 name = skip_dash_dash(decl, arg[0]);
765 size_t prefix_len = strlen(prefix);
766 if (strncmp(name, prefix, prefix_len) == 0 &&
767 name[prefix_len] == '-') {
768 name += prefix_len + 1;
773 if (strncmp(name, "no-", 3))
778 size_t prefix_len = strlen(prefix);
779 if (strncmp(name, prefix, prefix_len) == 0 &&
780 name[prefix_len] == '-')
781 name += prefix_len + 1;
784 if (match_long_name(decl, name, name + strlen(name))) {
786 decl->u.b.set(opt, 0);
787 else if (decl->offset != (size_t) -1)
796 static int parse_str_option(struct isl_arg *decl, char **arg,
797 const char *prefix, void *opt)
801 char **p = (char **)(((char *)opt) + decl->offset);
803 s = skip_name(decl, arg[0], prefix, 0, &has_argument);
822 static int parse_int_option(struct isl_arg *decl, char **arg,
823 const char *prefix, void *opt)
828 int *p = (int *)(((char *)opt) + decl->offset);
830 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
840 int i = strtol(arg[1], &endptr, 0);
841 if (*endptr == '\0') {
850 static int parse_long_option(struct isl_arg *decl, char **arg,
851 const char *prefix, void *opt)
856 long *p = (long *)(((char *)opt) + decl->offset);
858 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
863 long l = strtol(val, NULL, 0);
865 decl->u.l.set(opt, l);
872 long l = strtol(arg[1], &endptr, 0);
873 if (*endptr == '\0') {
875 decl->u.l.set(opt, l);
882 if (decl->u.l.default_value != decl->u.l.default_selected) {
884 decl->u.l.set(opt, decl->u.l.default_selected);
886 *p = decl->u.l.default_selected;
893 static int parse_ulong_option(struct isl_arg *decl, char **arg,
894 const char *prefix, void *opt)
899 unsigned long *p = (unsigned long *)(((char *)opt) + decl->offset);
901 val = skip_name(decl, arg[0], prefix, 0, &has_argument);
906 *p = strtoul(val, NULL, 0);
911 unsigned long ul = strtoul(arg[1], &endptr, 0);
912 if (*endptr == '\0') {
921 static int parse_option(struct isl_arg *decl, char **arg,
922 const char *prefix, void *opt);
924 static int parse_child_option(struct isl_arg *decl, char **arg,
925 const char *prefix, void *opt)
929 if (decl->offset == (size_t) -1)
932 child = *(void **)(((char *)opt) + decl->offset);
933 prefix = decl->long_name;
935 return parse_option(decl->u.child.child, arg, prefix, child);
938 static int parse_option(struct isl_arg *decl, char **arg,
939 const char *prefix, void *opt)
943 for (i = 0; decl[i].type != isl_arg_end; ++i) {
945 switch (decl[i].type) {
947 parsed = parse_choice_option(&decl[i], arg, prefix, opt);
950 parsed = parse_flags_option(&decl[i], arg, prefix, opt);
953 parsed = parse_int_option(&decl[i], arg, prefix, opt);
956 parsed = parse_long_option(&decl[i], arg, prefix, opt);
959 parsed = parse_ulong_option(&decl[i], arg, prefix, opt);
962 parsed = parse_bool_option(&decl[i], arg, prefix, opt);
965 parsed = parse_str_option(&decl[i], arg, prefix, opt);
968 parsed = parse_child_option(&decl[i], arg, prefix, opt);
973 case isl_arg_version:
984 static void print_version(struct isl_arg *decl)
988 for (i = 0; decl[i].type != isl_arg_end; ++i) {
989 switch (decl[i].type) {
990 case isl_arg_version:
991 decl[i].u.version.print_version();
994 print_version(decl[i].u.child.child);
1002 static void print_version_and_exit(struct isl_arg *decl)
1004 print_version(decl);
1009 static int drop_argument(int argc, char **argv, int drop, int n)
1011 for (; drop < argc; ++drop)
1012 argv[drop] = argv[drop + n];
1017 static int n_arg(struct isl_arg *arg)
1022 for (i = 0; arg[i].type != isl_arg_end; ++i)
1023 if (arg[i].type == isl_arg_arg)
1029 static int next_arg(struct isl_arg *arg, int a)
1031 for (++a; arg[a].type != isl_arg_end; ++a)
1032 if (arg[a].type == isl_arg_arg)
1038 int isl_arg_parse(struct isl_arg *arg, int argc, char **argv, void *opt,
1048 for (i = 1; i < argc; ++i) {
1049 if (strcmp(argv[i], "--help") == 0)
1050 print_help_and_exit(arg, argv[0]);
1053 for (i = 1; i < argc; ++i) {
1054 if ((strcmp(argv[i], "--version") == 0 ||
1055 strcmp(argv[i], "-V") == 0) && any_version(arg))
1056 print_version_and_exit(arg);
1059 while (argc > 1 + skip) {
1061 if (argv[1 + skip][0] != '-') {
1062 a = next_arg(arg, a);
1065 p = (char **)(((char *)opt)+arg[a].offset);
1067 *p = strdup(argv[1 + skip]);
1068 argc = drop_argument(argc, argv, 1 + skip, 1);
1070 } else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
1071 fprintf(stderr, "%s: extra argument: %s\n",
1072 prog_name(argv[0]), argv[1 + skip]);
1078 parsed = parse_option(arg, &argv[1 + skip], NULL, opt);
1080 argc = drop_argument(argc, argv, 1 + skip, parsed);
1081 else if (ISL_FL_ISSET(flags, ISL_ARG_ALL)) {
1082 fprintf(stderr, "%s: unrecognized option: %s\n",
1083 prog_name(argv[0]), argv[1 + skip]);
1090 fprintf(stderr, "%s: expecting %d more argument(s)\n",
1091 prog_name(argv[0]), n);