/* * Copyright (c) 2002 Todd C. Miller * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F39502-99-1-0512. */ /* * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Dieter Baron and Thomas Klausner. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* https://git.datadissipation.net */ #ifndef GETOPT_LONG_H_ #define GETOPT_LONG_H_ 1 #ifdef GETOPT_LONG_INCLUDE_LIBC #include #include #include #include #endif #ifndef HAVE_GETOPT_LONG #define HAVE_GETOPT_LONG 1 /* * structs are in their own namespace, so this should be OK * the worst it can do is make compiler messages worse */ #define option i_option_ struct i_option_ { const char *name; /* * one of no_argument, required_argument, and optional_argument: * whether option takes an argument */ int has_arg; /* if not NULL, set *flag to val when option found */ int *flag; /* if flag not NULL, value to set *flag to; else return value */ int val; }; int i_getopt_(int argc, char *argv[], const char *optstring); int i_getsubopt_(char *restrict optionp[], const char *restrict tokens[], char *restrict valuep[]); int i_getopt_long_(int argc, char *argv[], const char *optstring, const struct option *longopts, int *longindex); int i_getopt_long_only_(int argc, char *argv[], const char *optstring, const struct option *longopts, int *longindex); #define no_argument 0 #define required_argument 1 #define optional_argument 2 #define getopt(c,v,o) i_getopt_(c,v,o) #define getsubopt(o,t,v) i_getsubopt_(o,t,v) #define getopt_long(c,v,o,l,i) i_getopt_long_(c,v,o,l,i) #define getopt_long_only(c,v,o,l,i) i_getopt_long_only_(c,v,o,l,i) #endif /* !HAVE_GETOPT_LONG */ #ifdef GETOPT_LONG_IMPLEMENTATION #define I_PRINT_ERROR_ ((i_opterr_) && (*options != ':')) #define I_FLAG_PERMUTE_ 0x01 /* permute non-options to the end of argv */ #define I_FLAG_ALLARGS_ 0x02 /* treat non-options as args to option "-1" */ #define I_FLAG_LONGONLY_ 0x04 /* operate as i_getopt_long_only */ /* return values */ #define I_BADCH_ (int)'?' #define I_BADARG_ ((*options == ':') ? (int)':' : (int)'?') #define I_INORDER_ (int)1 #define I_EMSG_ "" static void i_warnx_(const char *, ...); static int i_getopt_internal_(int, char **, const char *, const struct option *, int *, int); static int i_parse_long_options__(char * const *, const char *, const struct option *, int *, int); static int i_gcd_(int, int); static void i_permute_args_(int, int, int, char * const *); /* XXX: set i_optreeset_ to 1 rather than these two */ static int i_nonopt_start_ = -1; /* first non option argument (for permute) */ static int i_nonopt_end_ = -1; /* first option after non options (for permute) */ static int i_opterr_ = 1; /* if error message should be printed */ static int i_optind_ = 1; /* index into parent argv vector */ static int i_optopt_ = '?'; /* character checked for validity */ static int i_optreeset_; /* reset getopt */ static char *i_optarg_; /* argument associated with option */ static char *i_place_ = I_EMSG_; /* option letter processing */ /* Error messages */ static const char i_recargchar_[] = "option requires an argument -- %c"; static const char i_recargstring_[] = "option requires an argument -- %s"; static const char i_ambig_[] = "i_ambig_uous option -- %.*s"; static const char i_noarg_[] = "option doesn't take an argument -- %.*s"; static const char i_illoptchar_[] = "unknown option -- %c"; static const char i_illoptstring_[] = "unknown option -- %s"; /* * Own warnx() for portability */ void i_warnx_(const char *fmt, ...) { va_list args; /* Linux "program_invocation_short_name" is a GNU extension, so we don't use it */ #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) #define I_GET_PROG_NAME_() getprogname() #else #define I_GET_PROG_NAME_() "warnx" #endif va_start(args, fmt); fprintf(stderr, "%s: ", I_GET_PROG_NAME_()); vfprintf(stderr, fmt, args); fputc('\n', stderr); va_end(args); } /* * Compute the greatest common divisor of a and b. */ static int i_gcd_(int a, int b) { int c; c = a % b; while (c != 0) { a = b; b = c; c = a % b; } return (b); } /* * Exchange the block from i_nonopt_start_ to i_nonopt_end_ with the block * from i_nonopt_end_ to opt_end (keeping the same order of arguments * in each block). */ static void i_permute_args_(int pai_nonopt_start_, int pai_nonopt_end_, int opt_end, char * const *nargv) { int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; char *swap; /* * compute lengths of blocks and number and size of cycles */ nnonopts = pai_nonopt_end_ - pai_nonopt_start_; nopts = opt_end - pai_nonopt_end_; ncycle = i_gcd_(nnonopts, nopts); cyclelen = (opt_end - pai_nonopt_start_) / ncycle; for (i = 0; i < ncycle; i++) { cstart = pai_nonopt_end_+i; pos = cstart; for (j = 0; j < cyclelen; j++) { if (pos >= pai_nonopt_end_) pos -= nnonopts; else pos += nopts; swap = nargv[pos]; /* LINTED const cast */ ((char **) nargv)[pos] = nargv[cstart]; /* LINTED const cast */ ((char **)nargv)[cstart] = swap; } } } /* * i_parse_long_options__ -- * Parse long options in argc/argv argument vector. * Returns -1 if short_too is set and the option does not match long_options. */ static int i_parse_long_options__(char * const *nargv, const char *options, const struct option *long_options, int *idx, int short_too) { char *current_argv, *has_equal; size_t current_argv_len; int i, match; current_argv = i_place_; match = -1; i_optind_++; if ((has_equal = strchr(current_argv, '=')) != NULL) { /* argument found (--option=arg) */ current_argv_len = has_equal - current_argv; has_equal++; } else { current_argv_len = strlen(current_argv); } for (i = 0; long_options[i].name; i++) { /* find matching long option */ if (strncmp(current_argv, long_options[i].name, current_argv_len)) continue; if (strlen(long_options[i].name) == current_argv_len) { /* exact match */ match = i; break; } /* * If this is a known short option, don't allow * a partial match of a single character. */ if (short_too && current_argv_len == 1) continue; if (match == -1) { /* partial match */ match = i; } else { /* i_ambig_uous abbreviation */ if (I_PRINT_ERROR_) i_warnx_(i_ambig_, (int)current_argv_len, current_argv); i_optopt_ = 0; return (I_BADCH_); } } if (match != -1) { /* option found */ if (long_options[match].has_arg == no_argument && has_equal) { if (I_PRINT_ERROR_) i_warnx_(i_noarg_, (int)current_argv_len, current_argv); /* * XXX: GNU sets i_optopt_ to val regardless of flag */ if (long_options[match].flag == NULL) i_optopt_ = long_options[match].val; else i_optopt_ = 0; return (I_BADARG_); } if (long_options[match].has_arg == required_argument || long_options[match].has_arg == optional_argument) { if (has_equal) i_optarg_ = has_equal; else if (long_options[match].has_arg == required_argument) { /* * optional argument doesn't use next nargv */ i_optarg_ = nargv[i_optind_++]; } } if ((long_options[match].has_arg == required_argument) && (i_optarg_ == NULL)) { /* * Missing argument; leading ':' indicates no error * should be generated. */ if (I_PRINT_ERROR_) i_warnx_(i_recargstring_, current_argv); /* * XXX: GNU sets i_optopt_ to val regardless of flag */ if (long_options[match].flag == NULL) i_optopt_ = long_options[match].val; else i_optopt_ = 0; --i_optind_; return (I_BADARG_); } } else { /* unknown option */ if (short_too) { --i_optind_; return (-1); } if (I_PRINT_ERROR_) i_warnx_(i_illoptstring_, current_argv); i_optopt_ = 0; return (I_BADCH_); } if (idx) *idx = match; if (long_options[match].flag) { *long_options[match].flag = long_options[match].val; return (0); } else return (long_options[match].val); } /* * i_getopt_internal_ -- * Parse argc/argv argument vector. Called by user level routines. */ static int i_getopt_internal_(int nargc, char **nargv, const char *options, const struct option *long_options, int *idx, int flags) { char *oli; /* option letter list index */ int optchar, short_too; static int posix_me_harder = -1; if (options == NULL) return (-1); /* * XXX Some GNU programs (like cvs) set optind to 0 instead of * XXX using optreeset. Work around this braindamage. */ if (i_optind_ == 0) i_optind_ = i_optreeset_ = 1; /* * Disable GNU extensions if POSIXLY_CORRECT is set or options * string begins with a '+'. */ if (posix_me_harder == -1 || i_optreeset_) posix_me_harder = (getenv("POSIXLY_CORRECT") != NULL); if (*options == '-') flags |= I_FLAG_ALLARGS_; else if (posix_me_harder || *options == '+') flags &= ~I_FLAG_PERMUTE_; if (*options == '+' || *options == '-') options++; i_optarg_ = NULL; if (i_optreeset_) i_nonopt_start_ = i_nonopt_end_ = -1; start: if (i_optreeset_ || !*i_place_) { /* update scanning pointer */ i_optreeset_ = 0; if (i_optind_ >= nargc) { /* end of argument vector */ i_place_ = I_EMSG_; if (i_nonopt_end_ != -1) { /* do permutation, if we have to */ i_permute_args_(i_nonopt_start_, i_nonopt_end_, i_optind_, nargv); i_optind_ -= i_nonopt_end_ - i_nonopt_start_; } else if (i_nonopt_start_ != -1) { /* * If we skipped non-options, set i_optind_ * to the first of them. */ i_optind_ = i_nonopt_start_; } i_nonopt_start_ = i_nonopt_end_ = -1; return (-1); } if (*(i_place_ = nargv[i_optind_]) != '-' || (i_place_[1] == '\0' && strchr(options, '-') == NULL)) { i_place_ = I_EMSG_; /* found non-option */ if (flags & I_FLAG_ALLARGS_) { /* * GNU extension: * return non-option as argument to option 1 */ i_optarg_ = nargv[i_optind_++]; return (I_INORDER_); } if (!(flags & I_FLAG_PERMUTE_)) { /* * If no permutation wanted, stop parsing * at first non-option. */ return (-1); } /* do permutation */ if (i_nonopt_start_ == -1) { i_nonopt_start_ = i_optind_; } else if (i_nonopt_end_ != -1) { i_permute_args_(i_nonopt_start_, i_nonopt_end_, i_optind_, nargv); i_nonopt_start_ = i_optind_ - (i_nonopt_end_ - i_nonopt_start_); i_nonopt_end_ = -1; } i_optind_++; /* process next argument */ goto start; } if (i_nonopt_start_ != -1 && i_nonopt_end_ == -1) i_nonopt_end_ = i_optind_; /* * If we have "-" do nothing, if "--" we are done. */ if (i_place_[1] != '\0' && *++i_place_ == '-' && i_place_[1] == '\0') { i_optind_++; i_place_ = I_EMSG_; /* * We found an option (--), so if we skipped * non-options, we have to permute. */ if (i_nonopt_end_ != -1) { i_permute_args_(i_nonopt_start_, i_nonopt_end_, i_optind_, nargv); i_optind_ -= i_nonopt_end_ - i_nonopt_start_; } i_nonopt_start_ = i_nonopt_end_ = -1; return (-1); } } /* * Check long options if: * 1) we were passed some * 2) the arg is not just "-" * 3) either the arg starts with -- we are i_getopt_long_only() */ if (long_options != NULL && i_place_ != nargv[i_optind_] && (*i_place_ == '-' || (flags & I_FLAG_LONGONLY_))) { short_too = 0; if (*i_place_ == '-') i_place_++; /* --foo long option */ else if (*i_place_ != ':' && strchr(options, *i_place_) != NULL) short_too = 1; /* could be short option too */ optchar = i_parse_long_options__(nargv, options, long_options, idx, short_too); if (optchar != -1) { i_place_ = I_EMSG_; return (optchar); } } if ((optchar = (int)*i_place_++) == (int)':' || (optchar == (int)'-' && *i_place_ != '\0') || (oli = strchr(options, optchar)) == NULL) { /* * If the user specified "-" and '-' isn't listed in * options, return -1 (non-option) as per POSIX. * Otherwise, it is an unknown option character (or ':'). */ if (optchar == (int)'-' && *i_place_ == '\0') return (-1); if (!*i_place_) ++i_optind_; if (I_PRINT_ERROR_) i_warnx_(i_illoptchar_, optchar); i_optopt_ = optchar; return (I_BADCH_); } if (long_options != NULL && optchar == 'W' && oli[1] == ';') { /* -W long-option */ if (*i_place_) { /* no space */ /* NOTHING */; } else if (++i_optind_ >= nargc) { /* no arg */ i_place_ = I_EMSG_; if (I_PRINT_ERROR_) i_warnx_(i_recargchar_, optchar); i_optopt_ = optchar; return (I_BADARG_); } else { /* white space */ i_place_ = nargv[i_optind_]; } optchar = i_parse_long_options__(nargv, options, long_options, idx, 0); i_place_ = I_EMSG_; return (optchar); } if (*++oli != ':') { /* doesn't take argument */ if (!*i_place_) ++i_optind_; } else { /* takes (optional) argument */ i_optarg_ = NULL; if (*i_place_) /* no white space */ i_optarg_ = i_place_; else if (oli[1] != ':') { /* arg not optional */ if (++i_optind_ >= nargc) { /* no arg */ i_place_ = I_EMSG_; if (I_PRINT_ERROR_) i_warnx_(i_recargchar_, optchar); i_optopt_ = optchar; return (I_BADARG_); } else { i_optarg_ = nargv[i_optind_]; } } i_place_ = I_EMSG_; ++i_optind_; } /* dump back option letter */ return (optchar); } int i_getopt_(int argc, char *argv[], const char *optstring) { #ifdef GETOPT_PERMUTE_ARGS return (i_getopt_internal_(argc, argv, optstring, NULL, NULL, I_FLAG_PERMUTE_)); #else return (i_getopt_internal_(argc, argv, optstring, NULL, NULL, 0)); #endif } int i_getopt_long_(int argc, char *argv[], const char *optstring, const struct option *longopts, int *longindex) { #ifdef GETOPT_LONG_PERMUTE_ARGS return (i_getopt_internal_(argc, argv, optstring, longopts, longindex, I_FLAG_PERMUTE_)); #else return (i_getopt_internal_(argc, argv, optstring, longopts, longindex, 0)); #endif } int i_getopt_long_only_(int argc, char *argv[], const char *optstring, const struct option *longopts, int *longindex) { #ifdef GETOPT_LONG_ONLY_PERMUTE_ARGS return (i_getopt_internal_(argc, argv, optstring, longopts, longindex, I_FLAG_PERMUTE_ | I_FLAG_LONGONLY_)); #else return (i_getopt_internal_(argc, argv, optstring, longopts, longindex, I_FLAG_LONGONLY_)); #endif } #endif /* GETOPT_LONG_IMPLEMENTATION */ #endif /* !GETOPT_LONG_H_ */