/* * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * Copyright (c) 2002 Todd C. Miller * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS 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. * * 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. */ /* https://git.datadissipation.net */ #ifndef LCE_GETOPT_LONG_H #define LCE_GETOPT_LONG_H 1 #ifdef LCE_GETOPT_LONG_INCLUDE_LIBC #include #include #include #include #endif /* LCE_GETOPT_LONG_INCLUDE_LIBC */ #ifndef HAVE_GETOPT_LONG #define HAVE_GETOPT_LONG 1 #ifndef HAVE_GETOPT #define HAVE_GETOPT 1 #endif /* !HAVE_GETOPT */ #define no_argument 0 #define required_argument 1 #define optional_argument 2 /* * structs are in their own namespace, so this should be OK * the worst it can do is make compiler messages worse */ #define option lce_option_ #define optarg lce_optarg_ #define suboptarg lce_suboptarg_ #define optind lce_optind_ #define opterr lce_opterr_ #define optopt lce_optopt_ #define optreset lce_optreset_ #define getopt lce_getopt_ #define getsubopt lce_getsubopt_ #define getopt_long lce_getopt_long_ #define getopt_long_only lce_getopt_long_only_ #ifndef LCE_GETOPT_LONG_IMPLEMENTATION extern char *lce_optarg_; extern char *lce_suboptarg_; extern int lce_optind_, lce_opterr_, lce_optopt_, lce_optreset_; #endif /* !LCE_GETOPT_LONG_IMPLEMENTATION */ struct lce_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 lce_getopt_(int argc, char * const *argv, const char *optstring); int lce_getsubopt_(char **optionp, char * const *tokens, char **valuep); int lce_getopt_long_(int argc, char * const *argv, const char *optstring, const struct option *longopts, int *longindex); int lce_getopt_long_only_(int argc, char * const *argv, const char *optstring, const struct option *longopts, int *longindex); #endif /* !HAVE_GETOPT_LONG */ #ifdef LCE_GETOPT_LONG_IMPLEMENTATION #define LCE_PRINT_ERROR_ ((lce_opterr_) && (*options != ':')) #define LCE_FLAG_PERMUTE_ 0x01 /* permute non-options to the end of argv */ #define LCE_FLAG_ALLARGS_ 0x02 /* treat non-options as args to option "-1" */ #define LCE_FLAG_LONGONLY_ 0x04 /* operate as getopt_long_only */ /* return values */ #define LCE_BADCH_ (int) '?' #define LCE_BADARG_ ((*options == ':') ? (int) ':' : (int) '?') #define LCE_INORDER_ (int) 1 #define LCE_EMSG_ "" int lce_opterr_ = 1; /* if error message should be printed */ int lce_optind_ = 1; /* index into parent argv vector */ int lce_optopt_ = '?'; /* character checked for validity */ int lce_optreset_; /* reset getopt */ char *lce_optarg_; /* argument associated with option */ char *lce_suboptarg_; /* argument associated with suboption */ /* XXX: set optreset to 1 rather than these two */ static int lce_nonopt_start_ = -1; /* first non option argument (for permute) */ static int lce_nonopt_end_ = -1; /* first option after non options (for permute) */ static char *lce_place_ = LCE_EMSG_; /* option letter processing */ static char *lce_progname_; /* program name == argv[0] */ /* Error messages */ static const char lce_recargchar_[] = "option requires an argument -- %c"; static const char lce_recargstring_[] = "option requires an argument -- %s"; static const char lce_ambig_[] = "ambiguous option -- %.*s"; static const char lce_noarg_[] = "option doesn't take an argument -- %.*s"; static const char lce_illoptchar_[] = "unknown option -- %c"; static const char lce_illoptstring_[] = "unknown option -- %s"; static void lce_warnx_(const char *, ...); static int lce_getopt_internal_(int, char * const *, const char *, const struct option *, int *, int); static int lce_parse_long_options__(char * const *, const char *, const struct option *, int *, int); static int lce_gcd_(int, int); static void lce_permute_args_(int, int, int, char * const *); /* * Own warnx() for portability */ void lce_warnx_(const char *fmt, ...) { va_list args; va_start(args, fmt); fprintf(stderr, "%s: ", lce_progname_); vfprintf(stderr, fmt, args); fputc('\n', stderr); va_end(args); } /* * Compute the greatest common divisor of a and b. */ static int lce_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 nonopt_start to nonopt_end with the block * from nonopt_end to opt_end (keeping the same order of arguments * in each block). */ static void lce_permute_args_(int panonopt_start, int panonopt_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 = panonopt_end - panonopt_start; nopts = opt_end - panonopt_end; ncycle = lce_gcd_(nnonopts, nopts); cyclelen = (opt_end - panonopt_start) / ncycle; for (i = 0; i < ncycle; i++) { cstart = panonopt_end+i; pos = cstart; for (j = 0; j < cyclelen; j++) { if (pos >= panonopt_end) pos -= nnonopts; else pos += nopts; swap = nargv[pos]; /* LINTED const cast */ ((char **) nargv)[pos] = nargv[cstart]; /* LINTED const cast */ ((char **) nargv)[cstart] = swap; } } } /* * lce_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 lce_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 = lce_place_; match = -1; lce_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 { /* ambiguous abbreviation */ if (LCE_PRINT_ERROR_) lce_warnx_(lce_ambig_, (int) current_argv_len, current_argv); lce_optopt_ = 0; return (LCE_BADCH_); } } if (match != -1) { /* option found */ if (long_options[match].has_arg == no_argument && has_equal) { if (LCE_PRINT_ERROR_) lce_warnx_(lce_noarg_, (int) current_argv_len, current_argv); /* * XXX: GNU sets optopt to val regardless of flag */ if (long_options[match].flag == NULL) lce_optopt_ = long_options[match].val; else lce_optopt_ = 0; return (LCE_BADARG_); } if (long_options[match].has_arg == required_argument || long_options[match].has_arg == optional_argument) { if (has_equal){ lce_optarg_ = has_equal; } else if (long_options[match].has_arg == required_argument) { /* * optional argument doesn't use next nargv */ lce_optarg_ = nargv[lce_optind_++]; } } if ((long_options[match].has_arg == required_argument) && (lce_optarg_ == NULL)) { /* * Missing argument; leading ':' indicates no error * should be generated. */ if (LCE_PRINT_ERROR_) lce_warnx_(lce_recargstring_, current_argv); /* * XXX: GNU sets optopt to val regardless of flag */ if (long_options[match].flag == NULL) lce_optopt_ = long_options[match].val; else lce_optopt_ = 0; --lce_optind_; return (LCE_BADARG_); } } else { /* unknown option */ if (short_too) { --lce_optind_; return (-1); } if (LCE_PRINT_ERROR_) lce_warnx_(lce_illoptstring_, current_argv); lce_optopt_ = 0; return (LCE_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); } } /* * lce_getopt_internal_ -- * Parse argc/argv argument vector. Called by user level routines. */ static int lce_getopt_internal_(int nargc, char *const *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); lce_progname_ = nargv[0]; /* * XXX Some GNU programs (like cvs) set optind to 0 instead of * XXX using optreset. Work around this braindamage. */ if (lce_optind_ == 0) lce_optind_ = lce_optreset_ = 1; /* * Disable GNU extensions if POSIXLY_CORRECT is set or options * string begins with a '+'. */ if (posix_me_harder == -1 || lce_optreset_) posix_me_harder = (getenv("POSIXLY_CORRECT") != NULL); if (*options == '-') flags |= LCE_FLAG_ALLARGS_; else if (posix_me_harder || *options == '+') flags &= ~LCE_FLAG_PERMUTE_; if (*options == '+' || *options == '-') options++; lce_optarg_ = NULL; if (lce_optreset_) lce_nonopt_start_ = lce_nonopt_end_ = -1; start: if (lce_optreset_ || !*lce_place_) { /* update scanning pointer */ lce_optreset_ = 0; if (lce_optind_ >= nargc) { /* end of argument vector */ lce_place_ = LCE_EMSG_; if (lce_nonopt_end_ != -1) { /* do permutation, if we have to */ lce_permute_args_(lce_nonopt_start_, lce_nonopt_end_, lce_optind_, nargv); lce_optind_ -= lce_nonopt_end_ - lce_nonopt_start_; } else if (lce_nonopt_start_ != -1) { /* * If we skipped non-options, set optind * to the first of them. */ lce_optind_ = lce_nonopt_start_; } lce_nonopt_start_ = lce_nonopt_end_ = -1; return (-1); } if (*(lce_place_ = nargv[lce_optind_]) != '-' || (lce_place_[1] == '\0' && strchr(options, '-') == NULL)) { lce_place_ = LCE_EMSG_; /* found non-option */ if (flags & LCE_FLAG_ALLARGS_) { /* * GNU extension: * return non-option as argument to option 1 */ lce_optarg_ = nargv[lce_optind_++]; return (LCE_INORDER_); } if (!(flags & LCE_FLAG_PERMUTE_)) { /* * If no permutation wanted, stop parsing * at first non-option. */ return (-1); } /* do permutation */ if (lce_nonopt_start_ == -1) { lce_nonopt_start_ = lce_optind_; } else if (lce_nonopt_end_ != -1) { lce_permute_args_(lce_nonopt_start_, lce_nonopt_end_, lce_optind_, nargv); lce_nonopt_start_ = lce_optind_ - (lce_nonopt_end_ - lce_nonopt_start_); lce_nonopt_end_ = -1; } lce_optind_++; /* process next argument */ goto start; } if (lce_nonopt_start_ != -1 && lce_nonopt_end_ == -1) lce_nonopt_end_ = lce_optind_; /* * If we have "-" do nothing, if "--" we are done. */ if (lce_place_[1] != '\0' && *++lce_place_ == '-' && lce_place_[1] == '\0') { lce_optind_++; lce_place_ = LCE_EMSG_; /* * We found an option (--), so if we skipped * non-options, we have to permute. */ if (lce_nonopt_end_ != -1) { lce_permute_args_(lce_nonopt_start_, lce_nonopt_end_, lce_optind_, nargv); lce_optind_ -= lce_nonopt_end_ - lce_nonopt_start_; } lce_nonopt_start_ = lce_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 lce_getopt_long_only() */ if (long_options != NULL && lce_place_ != nargv[lce_optind_] && (*lce_place_ == '-' || (flags & LCE_FLAG_LONGONLY_))) { short_too = 0; if (*lce_place_ == '-') lce_place_++; /* --foo long option */ else if (*lce_place_ != ':' && strchr(options, *lce_place_) != NULL) short_too = 1; /* could be short option too */ optchar = lce_parse_long_options__(nargv, options, long_options, idx, short_too); if (optchar != -1) { lce_place_ = LCE_EMSG_; return (optchar); } } if ((optchar = (int) *lce_place_++) == (int) ':' || (optchar == (int) '-' && *lce_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) '-' && *lce_place_ == '\0') return (-1); if (!*lce_place_) ++lce_optind_; if (LCE_PRINT_ERROR_) lce_warnx_(lce_illoptchar_, optchar); lce_optopt_ = optchar; return (LCE_BADCH_); } if (long_options != NULL && optchar == 'W' && oli[1] == ';') { /* -W long-option */ if (*lce_place_) { /* no space */ /* NOTHING */ ; } else if (++lce_optind_ >= nargc) { /* no arg */ lce_place_ = LCE_EMSG_; if (LCE_PRINT_ERROR_) lce_warnx_(lce_recargchar_, optchar); lce_optopt_ = optchar; return (LCE_BADARG_); } else { /* white space */ lce_place_ = nargv[lce_optind_]; } optchar = lce_parse_long_options__(nargv, options, long_options, idx, 0); lce_place_ = LCE_EMSG_; return (optchar); } if (*++oli != ':') { /* doesn't take argument */ if (!*lce_place_) ++lce_optind_; } else { /* takes (optional) argument */ lce_optarg_ = NULL; if (*lce_place_){ /* no white space */ lce_optarg_ = lce_place_; } else if (oli[1] != ':'){ /* arg not optional */ if (++lce_optind_ >= nargc) { /* no arg */ lce_place_ = LCE_EMSG_; if (LCE_PRINT_ERROR_) lce_warnx_(lce_recargchar_, optchar); lce_optopt_ = optchar; return (LCE_BADARG_); } else { lce_optarg_ = nargv[lce_optind_]; } } lce_place_ = LCE_EMSG_; ++lce_optind_; } /* dump back option letter */ return (optchar); } int lce_getsubopt_(char **optionp, char * const *tokens, char **valuep) { int cnt; char *p; lce_suboptarg_ = *valuep = NULL; if (!optionp || !*optionp) return (-1); /* skip leading white-space, commas */ for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p) ; if (!*p) { *optionp = p; return (-1); } /* save the start of the token, and skip the rest of the token. */ for (lce_suboptarg_ = p; *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';) ; if (*p) { /* * If there's an equals sign, set the value pointer, and * skip over the value part of the token. Terminate the * token. */ if (*p == '=') { *p = '\0'; for (*valuep = ++p; *p && *p != ',' && *p != ' ' && *p != '\t'; ++p) ; if (*p) *p++ = '\0'; } else { *p++ = '\0'; } /* Skip any whitespace or commas after this token. */ for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p) ; } /* set optionp for next round. */ *optionp = p; for (cnt = 0; *tokens; ++tokens, ++cnt) if (!strcmp(lce_suboptarg_, *tokens)) return (cnt); return (-1); } int lce_getopt_(int argc, char * const *argv, const char *optstring) { #ifdef LCE_GETOPT_PERMUTE_ARGS return (lce_getopt_internal_(argc, argv, optstring, NULL, NULL, LCE_FLAG_PERMUTE_)); #else return (lce_getopt_internal_(argc, argv, optstring, NULL, NULL, 0)); #endif /* LCE_GETOPT_PERMUTE_ARGS */ } int lce_getopt_long_(int argc, char * const *argv, const char *optstring, const struct option *longopts, int *longindex) { #ifdef LCE_GETOPT_LONG_PERMUTE_ARGS return (lce_getopt_internal_(argc, argv, optstring, longopts, longindex, LCE_FLAG_PERMUTE_)); #else return (lce_getopt_internal_(argc, argv, optstring, longopts, longindex, 0 )); #endif /* LCE_GETOPT_LONG_PERMUTE_ARGS */ } int lce_getopt_long_only_(int argc, char * const *argv, const char *optstring, const struct option *longopts, int *longindex) { #ifdef LCE_GETOPT_LONG_ONLY_PERMUTE_ARGS return (lce_getopt_internal_(argc, argv, optstring, longopts, longindex, LCE_FLAG_PERMUTE_ | I_FLAG_LONGONLY_)); #else return (lce_getopt_internal_(argc, argv, optstring, longopts, longindex, LCE_FLAG_LONGONLY_)); #endif /* LCE_GETOPT_LONG_ONLY_PERMUTE_ARGS */ } #endif /* LCE_GETOPT_LONG_IMPLEMENTATION */ #endif /* !LCE_GETOPT_LONG_H */