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Diffstat (limited to 'lzo/lzotest/mygetopt.ch')
| -rw-r--r-- | lzo/lzotest/mygetopt.ch | 698 |
1 files changed, 0 insertions, 698 deletions
diff --git a/lzo/lzotest/mygetopt.ch b/lzo/lzotest/mygetopt.ch deleted file mode 100644 index af4d282c..00000000 --- a/lzo/lzotest/mygetopt.ch +++ /dev/null @@ -1,698 +0,0 @@ -/* Getopt for GNU. - NOTE: getopt is now part of the C library, so if you don't know what - "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu - before changing it! - - Copyright (C) 1987, 88, 89, 90, 91, 92, 1993 - Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the - Free Software Foundation; either version 2, or (at your option) any - later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - - -#ifndef EOF -#include <stdio.h> -#include <string.h> -#endif - - -#undef PROGNAME -#define PROGNAME(x) (x) - - -/* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a - long-named option. Because this is not POSIX.2 compliant, it is - being phased out. */ -/* #define GETOPT_COMPAT */ -#undef GETOPT_COMPAT - -/* This version of `getopt' appears to the caller like standard Unix `getopt' - but it behaves differently for the user, since it allows the user - to intersperse the options with the other arguments. - - As `getopt' works, it permutes the elements of ARGV so that, - when it is done, all the options precede everything else. Thus - all application programs are extended to handle flexible argument order. - - Setting the environment variable POSIXLY_CORRECT disables permutation. - Then the behavior is completely standard. - - GNU application programs can use a third alternative mode in which - they can distinguish the relative order of options and other arguments. */ - -#include "mygetopt.h" -#define option mfx_option -#define optarg mfx_optarg -#define optind mfx_optind -#define opterr mfx_opterr -#define optopt mfx_optopt -#undef BAD_OPTION - -/* For communication from `getopt' to the caller. - When `getopt' finds an option that takes an argument, - the argument value is returned here. - Also, when `ordering' is RETURN_IN_ORDER, - each non-option ARGV-element is returned here. */ - -char *optarg = NULL; - -/* Index in ARGV of the next element to be scanned. - This is used for communication to and from the caller - and for communication between successive calls to `getopt'. - - On entry to `getopt', zero means this is the first call; initialize. - - When `getopt' returns EOF, this is the index of the first of the - non-option elements that the caller should itself scan. - - Otherwise, `optind' communicates from one call to the next - how much of ARGV has been scanned so far. */ - -/* XXX 1003.2 says this must be 1 before any call. */ -int optind = 0; - -/* The next char to be scanned in the option-element - in which the last option character we returned was found. - This allows us to pick up the scan where we left off. - - If this is zero, or a null string, it means resume the scan - by advancing to the next ARGV-element. */ - -static char *nextchar; - -/* Callers store zero here to inhibit the error message - for unrecognized options. */ - -int opterr = 1; - -/* Set to an option character which was unrecognized. - This must be initialized on some systems to avoid linking in the - system's own getopt implementation. */ - -#define BAD_OPTION '\0' -int optopt = BAD_OPTION; - -/* Describe how to deal with options that follow non-option ARGV-elements. - - If the caller did not specify anything, - the default is REQUIRE_ORDER if the environment variable - POSIXLY_CORRECT is defined, PERMUTE otherwise. - - REQUIRE_ORDER means don't recognize them as options; - stop option processing when the first non-option is seen. - This is what Unix does. - This mode of operation is selected by either setting the environment - variable POSIXLY_CORRECT, or using `+' as the first character - of the list of option characters. - - PERMUTE is the default. We permute the contents of ARGV as we scan, - so that eventually all the non-options are at the end. This allows options - to be given in any order, even with programs that were not written to - expect this. - - RETURN_IN_ORDER is an option available to programs that were written - to expect options and other ARGV-elements in any order and that care about - the ordering of the two. We describe each non-option ARGV-element - as if it were the argument of an option with character code 1. - Using `-' as the first character of the list of option characters - selects this mode of operation. - - The special argument `--' forces an end of option-scanning regardless - of the value of `ordering'. In the case of RETURN_IN_ORDER, only - `--' can cause `getopt' to return EOF with `optind' != ARGC. */ - -static enum -{ - REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER -} ordering; - -/* Handle permutation of arguments. */ - -/* Describe the part of ARGV that contains non-options that have - been skipped. `first_nonopt' is the index in ARGV of the first of them; - `last_nonopt' is the index after the last of them. */ - -static int first_nonopt; -static int last_nonopt; - -/* Exchange two adjacent subsequences of ARGV. - One subsequence is elements [first_nonopt,last_nonopt) - which contains all the non-options that have been skipped so far. - The other is elements [last_nonopt,optind), which contains all - the options processed since those non-options were skipped. - - `first_nonopt' and `last_nonopt' are relocated so that they describe - the new indices of the non-options in ARGV after they are moved. - - To perform the swap, we first reverse the order of all elements. So - all options now come before all non options, but they are in the - wrong order. So we put back the options and non options in original - order by reversing them again. For example: - original input: a b c -x -y - reverse all: -y -x c b a - reverse options: -x -y c b a - reverse non options: -x -y a b c -*/ - - -static void exchange (char **argv) -{ - char *temp; char **first, **last; - - /* Reverse all the elements [first_nonopt, optind) */ - first = &argv[first_nonopt]; - last = &argv[optind-1]; - while (first < last) { - temp = *first; *first = *last; *last = temp; first++; last--; - } - /* Put back the options in order */ - first = &argv[first_nonopt]; - first_nonopt += (optind - last_nonopt); - last = &argv[first_nonopt - 1]; - while (first < last) { - temp = *first; *first = *last; *last = temp; first++; last--; - } - - /* Put back the non options in order */ - first = &argv[first_nonopt]; - last_nonopt = optind; - last = &argv[last_nonopt-1]; - while (first < last) { - temp = *first; *first = *last; *last = temp; first++; last--; - } -} - -/* Scan elements of ARGV (whose length is ARGC) for option characters - given in OPTSTRING. - - If an element of ARGV starts with '-', and is not exactly "-" or "--", - then it is an option element. The characters of this element - (aside from the initial '-') are option characters. If `getopt' - is called repeatedly, it returns successively each of the option characters - from each of the option elements. - - If `getopt' finds another option character, it returns that character, - updating `optind' and `nextchar' so that the next call to `getopt' can - resume the scan with the following option character or ARGV-element. - - If there are no more option characters, `getopt' returns `EOF'. - Then `optind' is the index in ARGV of the first ARGV-element - that is not an option. (The ARGV-elements have been permuted - so that those that are not options now come last.) - - OPTSTRING is a string containing the legitimate option characters. - If an option character is seen that is not listed in OPTSTRING, - return BAD_OPTION after printing an error message. If you set `opterr' to - zero, the error message is suppressed but we still return BAD_OPTION. - - If a char in OPTSTRING is followed by a colon, that means it wants an arg, - so the following text in the same ARGV-element, or the text of the following - ARGV-element, is returned in `optarg'. Two colons mean an option that - wants an optional arg; if there is text in the current ARGV-element, - it is returned in `optarg', otherwise `optarg' is set to zero. - - If OPTSTRING starts with `-' or `+', it requests different methods of - handling the non-option ARGV-elements. - See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. - - Long-named options begin with `--' instead of `-'. - Their names may be abbreviated as long as the abbreviation is unique - or is an exact match for some defined option. If they have an - argument, it follows the option name in the same ARGV-element, separated - from the option name by a `=', or else the in next ARGV-element. - When `getopt' finds a long-named option, it returns 0 if that option's - `flag' field is nonzero, the value of the option's `val' field - if the `flag' field is zero. - - LONGOPTS is a vector of `struct option' terminated by an - element containing a name which is zero. - - LONGIND returns the index in LONGOPT of the long-named option found. - It is only valid when a long-named option has been found by the most - recent call. - - If LONG_ONLY is nonzero, '-' as well as '--' can introduce - long-named options. */ - -static int _getopt_internal (int argc, char **argv, const char *optstring, - const struct option *longopts, int *longind, - int long_only) -{ - static char empty_string[1]; - int option_index; - - if (longind != NULL) - *longind = -1; - - optarg = 0; - - /* Initialize the internal data when the first call is made. - Start processing options with ARGV-element 1 (since ARGV-element 0 - is the program name); the sequence of previously skipped - non-option ARGV-elements is empty. */ - - if (optind == 0) - { - first_nonopt = last_nonopt = optind = 1; - - nextchar = NULL; - - /* Determine how to handle the ordering of options and nonoptions. */ - - if (optstring[0] == '-') - { - ordering = RETURN_IN_ORDER; - ++optstring; - } - else if (optstring[0] == '+') - { - ordering = REQUIRE_ORDER; - ++optstring; - } -#if 0 - else if (getenv ("POSIXLY_CORRECT") != NULL) - ordering = REQUIRE_ORDER; -#endif - else - ordering = PERMUTE; - } - - if (nextchar == NULL || *nextchar == '\0') - { - if (ordering == PERMUTE) - { - /* If we have just processed some options following some non-options, - exchange them so that the options come first. */ - - if (first_nonopt != last_nonopt && last_nonopt != optind) - exchange (argv); - else if (last_nonopt != optind) - first_nonopt = optind; - - /* Now skip any additional non-options - and extend the range of non-options previously skipped. */ - - while (optind < argc - && (argv[optind][0] != '-' || argv[optind][1] == '\0') -#ifdef GETOPT_COMPAT - && (longopts == NULL - || argv[optind][0] != '+' || argv[optind][1] == '\0') -#endif /* GETOPT_COMPAT */ - ) - optind++; - last_nonopt = optind; - } - - /* Special ARGV-element `--' means premature end of options. - Skip it like a null option, - then exchange with previous non-options as if it were an option, - then skip everything else like a non-option. */ - - if (optind != argc && !strcmp (argv[optind], "--")) - { - optind++; - - if (first_nonopt != last_nonopt && last_nonopt != optind) - exchange (argv); - else if (first_nonopt == last_nonopt) - first_nonopt = optind; - last_nonopt = argc; - - optind = argc; - } - - /* If we have done all the ARGV-elements, stop the scan - and back over any non-options that we skipped and permuted. */ - - if (optind == argc) - { - /* Set the next-arg-index to point at the non-options - that we previously skipped, so the caller will digest them. */ - if (first_nonopt != last_nonopt) - optind = first_nonopt; - return EOF; - } - - /* If we have come to a non-option and did not permute it, - either stop the scan or describe it to the caller and pass it by. */ - - if ((argv[optind][0] != '-' || argv[optind][1] == '\0') -#ifdef GETOPT_COMPAT - && (longopts == NULL - || argv[optind][0] != '+' || argv[optind][1] == '\0') -#endif /* GETOPT_COMPAT */ - ) - { - if (ordering == REQUIRE_ORDER) - return EOF; - optarg = argv[optind++]; - return 1; - } - - /* We have found another option-ARGV-element. - Start decoding its characters. */ - - nextchar = (argv[optind] + 1 - + (longopts != NULL && argv[optind][1] == '-')); - } - - if (longopts != NULL - && ((argv[optind][0] == '-' - && (argv[optind][1] == '-' || long_only)) -#ifdef GETOPT_COMPAT - || argv[optind][0] == '+' -#endif /* GETOPT_COMPAT */ - )) - { - const struct option *p; - char *s = nextchar; - int exact = 0; - int ambig = 0; - const struct option *pfound = NULL; - int indfound = 0; - int needexact = 0; - - /* allow `--option#value' because you cannout assign a '=' - to an environment variable under DOS command.com */ - while (*s && *s != '=' && * s != '#') - s++; - - /* Test all options for either exact match or abbreviated matches. */ - for (p = longopts, option_index = 0; p->name; - p++, option_index++) - if (!strncmp (p->name, nextchar, (unsigned) (s - nextchar))) - { - if (p->has_arg & 0x10) - needexact = 1; - if ((unsigned) (s - nextchar) == strlen (p->name)) - { - /* Exact match found. */ - pfound = p; - indfound = option_index; - exact = 1; - break; - } - else if (pfound == NULL) - { - /* First nonexact match found. */ - pfound = p; - indfound = option_index; - } - else - /* Second nonexact match found. */ - ambig = 1; - } - - /* don't allow nonexact longoptions */ - if (needexact && !exact) - { - if (opterr) - fprintf (stderr, "%s: unrecognized option `%s'\n", - PROGNAME(argv[0]), argv[optind]); - nextchar += strlen (nextchar); - optind++; - return BAD_OPTION; - } - if (ambig && !exact) - { - if (opterr) - fprintf (stderr, "%s: option `%s' is ambiguous\n", - PROGNAME(argv[0]), argv[optind]); - nextchar += strlen (nextchar); - optind++; - return BAD_OPTION; - } - - if (pfound != NULL) - { - int have_arg = (s[0] != '\0'); - if (have_arg && (pfound->has_arg & 0xf)) - have_arg = (s[1] != '\0'); - option_index = indfound; - optind++; - if (have_arg) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg & 0xf) - optarg = s + 1; - else - { - if (opterr) - { - if (argv[optind - 1][1] == '-') - /* --option */ - fprintf (stderr, - "%s: option `--%s' doesn't allow an argument\n", - PROGNAME(argv[0]), pfound->name); - else - /* +option or -option */ - fprintf (stderr, - "%s: option `%c%s' doesn't allow an argument\n", - PROGNAME(argv[0]), argv[optind - 1][0], pfound->name); - } - nextchar += strlen (nextchar); - return BAD_OPTION; - } - } - else if ((pfound->has_arg & 0xf) == 1) - { -#if 0 - if (optind < argc) -#else - if (optind < argc && (pfound->has_arg & 0x20) == 0) -#endif - optarg = argv[optind++]; - else - { - if (opterr) - fprintf (stderr, "%s: option `--%s%s' requires an argument\n", - PROGNAME(argv[0]), pfound->name, - (pfound->has_arg & 0x20) ? "=" : ""); - nextchar += strlen (nextchar); - return optstring[0] == ':' ? ':' : BAD_OPTION; - } - } - nextchar += strlen (nextchar); - if (longind != NULL) - *longind = option_index; - if (pfound->flag) - { - *(pfound->flag) = pfound->val; - return 0; - } - return pfound->val; - } - /* Can't find it as a long option. If this is not getopt_long_only, - or the option starts with '--' or is not a valid short - option, then it's an error. - Otherwise interpret it as a short option. */ - if (!long_only || argv[optind][1] == '-' -#ifdef GETOPT_COMPAT - || argv[optind][0] == '+' -#endif /* GETOPT_COMPAT */ - || strchr (optstring, *nextchar) == NULL) - { - if (opterr) - { - if (argv[optind][1] == '-') - /* --option */ - fprintf (stderr, "%s: unrecognized option `--%s'\n", - PROGNAME(argv[0]), nextchar); - else - /* +option or -option */ - fprintf (stderr, "%s: unrecognized option `%c%s'\n", - PROGNAME(argv[0]), argv[optind][0], nextchar); - } - nextchar = empty_string; - optind++; - return BAD_OPTION; - } - (void) &ambig; /* UNUSED */ - } - - /* Look at and handle the next option-character. */ - - { - char c = *nextchar++; - const char *temp = strchr (optstring, c); - - /* Increment `optind' when we start to process its last character. */ - if (*nextchar == '\0') - ++optind; - - if (temp == NULL || c == ':') - { - if (opterr) - { -#if 0 - if (c < 040 || c >= 0177) - fprintf (stderr, "%s: unrecognized option, character code 0%o\n", - PROGNAME(argv[0]), c); - else - fprintf (stderr, "%s: unrecognized option `-%c'\n", PROGNAME(argv[0]), c); -#else - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, "%s: illegal option -- %c\n", PROGNAME(argv[0]), c); -#endif - } - optopt = c; - return BAD_OPTION; - } - if (temp[1] == ':') - { - if (temp[2] == ':') - { - /* This is an option that accepts an argument optionally. */ - if (*nextchar != '\0') - { - optarg = nextchar; - optind++; - } - else - optarg = 0; - nextchar = NULL; - } - else - { - /* This is an option that requires an argument. */ - if (*nextchar != '\0') - { - optarg = nextchar; - /* If we end this ARGV-element by taking the rest as an arg, - we must advance to the next element now. */ - optind++; - } - else if (optind == argc) - { - if (opterr) - { -#if 0 - fprintf (stderr, "%s: option `-%c' requires an argument\n", - PROGNAME(argv[0]), c); -#else - /* 1003.2 specifies the format of this message. */ - fprintf (stderr, "%s: option requires an argument -- %c\n", - PROGNAME(argv[0]), c); -#endif - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = BAD_OPTION; - } - else - /* We already incremented `optind' once; - increment it again when taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - nextchar = NULL; - } - } - return c; - } -} - -int mfx_getopt(int argc, char **argv, const char *optstring) -{ - return _getopt_internal (argc, argv, optstring, - (const struct option *) 0, - (int *) 0, - 0); -} - -int mfx_getopt_long(int argc, char **argv, const char *options, - const struct option *long_options, int *opt_index) -{ - return _getopt_internal (argc, argv, options, long_options, opt_index, 0); -} - - -#ifdef TEST - -/* Compile with -DTEST to make an executable for use in testing - the above definition of `getopt'. */ - -int -main (argc, argv) - int argc; - char **argv; -{ - int c; - int digit_optind = 0; - - while (1) - { - int this_option_optind = optind ? optind : 1; - - c = getopt (argc, argv, "abc:d:0123456789"); - if (c == EOF) - break; - - switch (c) - { - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - if (digit_optind != 0 && digit_optind != this_option_optind) - printf ("digits occur in two different argv-elements.\n"); - digit_optind = this_option_optind; - printf ("option %c\n", c); - break; - - case 'a': - printf ("option a\n"); - break; - - case 'b': - printf ("option b\n"); - break; - - case 'c': - printf ("option c with value `%s'\n", optarg); - break; - - case BAD_OPTION: - break; - - default: - printf ("?? getopt returned character code 0%o ??\n", c); - } - } - - if (optind < argc) - { - printf ("non-option ARGV-elements: "); - while (optind < argc) - printf ("%s ", argv[optind++]); - printf ("\n"); - } - - exit (0); -} - -#endif /* TEST */ - - -/* -vi:ts=4:et:nowrap -*/ - |