diff options
Diffstat (limited to 'src/getopt.c')
| -rw-r--r-- | src/getopt.c | 1254 |
1 files changed, 581 insertions, 673 deletions
diff --git a/src/getopt.c b/src/getopt.c index 4503953..5a8bb6c 100644 --- a/src/getopt.c +++ b/src/getopt.c @@ -59,7 +59,6 @@ #ifndef ELIDE_CODE - /* This needs to come after some library #include to get __GNU_LIBRARY__ defined. */ #ifdef __GNU_LIBRARY__ @@ -67,7 +66,7 @@ contain conflicting prototypes for getopt. */ #include <stdlib.h> #include <unistd.h> -#endif /* GNU C library. */ +#endif /* GNU C library. */ #ifdef VMS #include <unixlib.h> @@ -181,11 +180,9 @@ int optopt = '?'; of the value of `ordering'. In the case of RETURN_IN_ORDER, only `--' can cause `getopt' to return -1 with `optind' != ARGC. */ -static enum -{ - REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER -} -ordering; +static enum { + REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER +} ordering; /* Value of POSIXLY_CORRECT environment variable. */ static char *posixly_correct; @@ -204,18 +201,16 @@ static char *posixly_correct; char *getenv(); -static char * -my_index(str, chr) - const char *str; - int chr; +static char *my_index(str, chr) +const char *str; +int chr; { - while (*str) - { - if (*str == chr) - return (char *) str; - str++; - } - return 0; + while (*str) { + if (*str == chr) + return (char *) str; + str++; + } + return 0; } /* If using GCC, we can safely declare strlen this way. @@ -227,10 +222,10 @@ my_index(str, chr) /* gcc with -traditional declares the built-in strlen to return int, and has done so at least since version 2.4.5. -- rms. */ extern int strlen(const char *); -#endif /* not __STDC__ */ -#endif /* __GNUC__ */ +#endif /* not __STDC__ */ +#endif /* __GNUC__ */ -#endif /* not __GNU_LIBRARY__ */ +#endif /* not __GNU_LIBRARY__ */ /* Handle permutation of arguments. */ @@ -257,18 +252,18 @@ static char *const *original_argv; /* Make sure the environment variable bash 2.0 puts in the environment is valid for the getopt call we must make sure that the ARGV passed to getopt is that one passed to the process. */ -static void __attribute__ ((unused)) store_args_and_env(int argc, - char *const *argv) +static void + __attribute__ ((unused)) store_args_and_env(int argc, char *const *argv) { - /* XXX This is no good solution. We should rather copy the args so that - we can compare them later. But we must not use malloc(3). */ - original_argc = argc; - original_argv = argv; + /* XXX This is no good solution. We should rather copy the args so that + we can compare them later. But we must not use malloc(3). */ + original_argc = argc; + original_argv = argv; } # ifdef text_set_element text_set_element(__libc_subinit, store_args_and_env); -# endif /* text_set_element */ +# endif /* text_set_element */ # define SWAP_FLAGS(ch1, ch2) \ if (nonoption_flags_len > 0) \ @@ -277,9 +272,9 @@ text_set_element(__libc_subinit, store_args_and_env); __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ __getopt_nonoption_flags[ch2] = __tmp; \ } -#else /* !_LIBC */ +#else /* !_LIBC */ # define SWAP_FLAGS(ch1, ch2) -#endif /* _LIBC */ +#endif /* _LIBC */ /* Exchange two adjacent subsequences of ARGV. One subsequence is elements [first_nonopt,last_nonopt) @@ -294,85 +289,76 @@ text_set_element(__libc_subinit, store_args_and_env); static void exchange(char **); #endif -static void -exchange(argv) - char **argv; +static void exchange(argv) +char **argv; { - int bottom = first_nonopt; - int middle = last_nonopt; - int top = optind; - char *tem; + int bottom = first_nonopt; + int middle = last_nonopt; + int top = optind; + char *tem; - /* Exchange the shorter segment with the far end of the longer segment. - That puts the shorter segment into the right place. It leaves the - longer segment in the right place overall, but it consists of two parts - that need to be swapped next. */ + /* Exchange the shorter segment with the far end of the longer segment. + That puts the shorter segment into the right place. It leaves the + longer segment in the right place overall, but it consists of two parts + that need to be swapped next. */ #ifdef _LIBC - /* First make sure the handling of the `__getopt_nonoption_flags' string - can work normally. Our top argument must be in the range of the - string. */ - if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) - { - /* We must extend the array. The user plays games with us and presents - new arguments. */ - char *new_str = malloc(top + 1); - - if (new_str == NULL) - nonoption_flags_len = nonoption_flags_max_len = 0; - else - { - memset(__mempcpy - (new_str, __getopt_nonoption_flags, nonoption_flags_max_len), - '\0', top + 1 - nonoption_flags_max_len); - nonoption_flags_max_len = top + 1; - __getopt_nonoption_flags = new_str; - } - } + /* First make sure the handling of the `__getopt_nonoption_flags' string + can work normally. Our top argument must be in the range of the + string. */ + if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) { + /* We must extend the array. The user plays games with us and presents + new arguments. */ + char *new_str = malloc(top + 1); + + if (new_str == NULL) + nonoption_flags_len = nonoption_flags_max_len = 0; + else { + memset(__mempcpy + (new_str, __getopt_nonoption_flags, + nonoption_flags_max_len), '\0', top + 1 - nonoption_flags_max_len); + nonoption_flags_max_len = top + 1; + __getopt_nonoption_flags = new_str; + } + } #endif - while (top > middle && middle > bottom) - { - if (top - middle > middle - bottom) - { - /* Bottom segment is the short one. */ - int len = middle - bottom; - register int i; - - /* Swap it with the top part of the top segment. */ - for (i = 0; i < len; i++) - { - tem = argv[bottom + i]; - argv[bottom + i] = argv[top - (middle - bottom) + i]; - argv[top - (middle - bottom) + i] = tem; - SWAP_FLAGS(bottom + i, top - (middle - bottom) + i); - } - /* Exclude the moved bottom segment from further swapping. */ - top -= len; - } - else - { - /* Top segment is the short one. */ - int len = top - middle; - register int i; - - /* Swap it with the bottom part of the bottom segment. */ - for (i = 0; i < len; i++) - { - tem = argv[bottom + i]; - argv[bottom + i] = argv[middle + i]; - argv[middle + i] = tem; - SWAP_FLAGS(bottom + i, middle + i); - } - /* Exclude the moved top segment from further swapping. */ - bottom += len; - } - } - - /* Update records for the slots the non-options now occupy. */ - - first_nonopt += (optind - last_nonopt); - last_nonopt = optind; + while (top > middle && middle > bottom) { + if (top - middle > middle - bottom) { + /* Bottom segment is the short one. */ + int len = middle - bottom; + register int i; + + /* Swap it with the top part of the top segment. */ + for (i = 0; i < len; i++) { + tem = argv[bottom + i]; + argv[bottom + i] = argv[top - (middle - bottom) + i]; + argv[top - (middle - bottom) + i] = tem; + SWAP_FLAGS(bottom + i, top - (middle - bottom) + i); + } + /* Exclude the moved bottom segment from further swapping. */ + top -= len; + } else { + /* Top segment is the short one. */ + int len = top - middle; + register int i; + + /* Swap it with the bottom part of the bottom segment. */ + for (i = 0; i < len; i++) { + tem = argv[bottom + i]; + argv[bottom + i] = argv[middle + i]; + argv[middle + i] = tem; + SWAP_FLAGS(bottom + i, middle + i); + } + /* Exclude the moved top segment from further swapping. */ + bottom += len; + } + } + + /* Update records for the slots the non-options now occupy. */ + + first_nonopt += (optind - last_nonopt); + last_nonopt = optind; } /* Initialize the internal data when the first call is made. */ @@ -380,71 +366,61 @@ exchange(argv) #if defined (__STDC__) && __STDC__ static const char *_getopt_initialize(int, char *const *, const char *); #endif -static const char * -_getopt_initialize(argc, argv, optstring) - int argc; - char *const *argv; - const char *optstring; +static const char *_getopt_initialize(argc, argv, optstring) +int argc; +char *const *argv; +const char *optstring; { - /* 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. */ + /* 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. */ - first_nonopt = last_nonopt = optind; + first_nonopt = last_nonopt = optind; - nextchar = NULL; + nextchar = NULL; - posixly_correct = getenv("POSIXLY_CORRECT"); + posixly_correct = getenv("POSIXLY_CORRECT"); - /* Determine how to handle the ordering of options and nonoptions. */ + /* 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; - } - else if (posixly_correct != NULL) - ordering = REQUIRE_ORDER; - else - ordering = PERMUTE; + if (optstring[0] == '-') { + ordering = RETURN_IN_ORDER; + ++optstring; + } else if (optstring[0] == '+') { + ordering = REQUIRE_ORDER; + ++optstring; + } else if (posixly_correct != NULL) + ordering = REQUIRE_ORDER; + else + ordering = PERMUTE; #ifdef _LIBC - if (posixly_correct == NULL && argc == original_argc - && argv == original_argv) - { - if (nonoption_flags_max_len == 0) - { - if (__getopt_nonoption_flags == NULL - || __getopt_nonoption_flags[0] == '\0') - nonoption_flags_max_len = -1; - else - { - const char *orig_str = __getopt_nonoption_flags; - int len = nonoption_flags_max_len = strlen(orig_str); - - if (nonoption_flags_max_len < argc) - nonoption_flags_max_len = argc; - __getopt_nonoption_flags = - (char *) malloc(nonoption_flags_max_len); - if (__getopt_nonoption_flags == NULL) - nonoption_flags_max_len = -1; - else - memset(__mempcpy(__getopt_nonoption_flags, orig_str, len), - '\0', nonoption_flags_max_len - len); - } - } - nonoption_flags_len = nonoption_flags_max_len; - } - else - nonoption_flags_len = 0; + if (posixly_correct == NULL && argc == original_argc && argv == original_argv) { + if (nonoption_flags_max_len == 0) { + if (__getopt_nonoption_flags == NULL || __getopt_nonoption_flags[0] == '\0') + nonoption_flags_max_len = -1; + else { + const char *orig_str = __getopt_nonoption_flags; + int len = nonoption_flags_max_len = strlen(orig_str); + + if (nonoption_flags_max_len < argc) + nonoption_flags_max_len = argc; + __getopt_nonoption_flags = (char *) + malloc(nonoption_flags_max_len); + if (__getopt_nonoption_flags == NULL) + nonoption_flags_max_len = -1; + else + memset(__mempcpy + (__getopt_nonoption_flags, + orig_str, len), '\0', nonoption_flags_max_len - len); + } + } + nonoption_flags_len = nonoption_flags_max_len; + } else + nonoption_flags_len = 0; #endif - return optstring; + return optstring; } /* Scan elements of ARGV (whose length is ARGC) for option characters @@ -503,30 +479,28 @@ _getopt_initialize(argc, argv, optstring) If LONG_ONLY is nonzero, '-' as well as '--' can introduce long-named options. */ -int -_getopt_internal(argc, argv, optstring, longopts, longind, long_only) - int argc; - char *const *argv; - const char *optstring; - const struct option *longopts; - int *longind; - int long_only; +int _getopt_internal(argc, argv, optstring, longopts, longind, long_only) +int argc; +char *const *argv; +const char *optstring; +const struct option *longopts; +int *longind; +int long_only; { - optarg = NULL; - - if (optind == 0 || !__getopt_initialized) - { - if (optind == 0) - optind = 1; /* Don't scan ARGV[0], the - program name. */ - optstring = _getopt_initialize(argc, argv, optstring); - __getopt_initialized = 1; - } - - /* Test whether ARGV[optind] points to a non-option argument. Either it - does not have option syntax, or there is an environment flag from the - shell indicating it is not an option. The later information is only - used when the used in the GNU libc. */ + optarg = NULL; + + if (optind == 0 || !__getopt_initialized) { + if (optind == 0) + optind = 1; /* Don't scan ARGV[0], the + program name. */ + optstring = _getopt_initialize(argc, argv, optstring); + __getopt_initialized = 1; + } + + /* Test whether ARGV[optind] points to a non-option argument. Either it + does not have option syntax, or there is an environment flag from the + shell indicating it is not an option. The later information is only + used when the used in the GNU libc. */ #ifdef _LIBC #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ || (optind < nonoption_flags_len \ @@ -535,511 +509,445 @@ _getopt_internal(argc, argv, optstring, longopts, longind, long_only) #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') #endif - if (nextchar == NULL || *nextchar == '\0') - { - /* Advance to the next ARGV-element. */ - - /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been - moved back by the user (who may also have changed the arguments). */ - if (last_nonopt > optind) - last_nonopt = optind; - if (first_nonopt > optind) - first_nonopt = optind; - - 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((char **) argv); - else if (last_nonopt != optind) - first_nonopt = optind; - - /* Skip any additional non-options and extend the range of - non-options previously skipped. */ - - while (optind < argc && NONOPTION_P) - optind++; - last_nonopt = optind; - } - - /* The 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((char **) 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 -1; - } - - /* 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 (NONOPTION_P) - { - if (ordering == REQUIRE_ORDER) - return -1; - optarg = argv[optind++]; - return 1; - } - - /* We have found another option-ARGV-element. Skip the initial - punctuation. */ - - nextchar = - (argv[optind] + 1 + (longopts != NULL && argv[optind][1] == '-')); - } - - /* Decode the current option-ARGV-element. */ - - /* Check whether the ARGV-element is a long option. - - If long_only and the ARGV-element has the form "-f", where f is a valid - short option, don't consider it an abbreviated form of a long option - that starts with f. Otherwise there would be no way to give the -f - short option. - - On the other hand, if there's a long option "fubar" and the - ARGV-element is "-fu", do consider that an abbreviation of the long - option, just like "--fu", and not "-f" with arg "u". - - This distinction seems to be the most useful approach. */ - - if (longopts != NULL - && (argv[optind][1] == '-' - || (long_only - && (argv[optind][2] - || !my_index(optstring, argv[optind][1]))))) - { - char *nameend; - const struct option *p; - const struct option *pfound = NULL; - int exact = 0; - int ambig = 0; - int indfound = -1; - int option_index; - - for (nameend = nextchar; *nameend && *nameend != '='; nameend++) - /* Do nothing. */ ; - - /* Test all long options for either exact match or abbreviated matches. - */ - for (p = longopts, option_index = 0; p->name; p++, option_index++) - if (!strncmp(p->name, nextchar, nameend - nextchar)) - { - if ((unsigned int) (nameend - nextchar) == - (unsigned int) 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 or later nonexact match found. */ - ambig = 1; - } - - if (ambig && !exact) - { - if (opterr) - fprintf(stderr, _("%s: option `%s' is ambiguous\n"), argv[0], - argv[optind]); - nextchar += strlen(nextchar); - optind++; - optopt = 0; - return '?'; - } - - if (pfound != NULL) - { - option_index = indfound; - optind++; - if (*nameend) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg) - optarg = nameend + 1; - else - { - if (opterr) - { - if (argv[optind - 1][1] == '-') - /* --option */ - fprintf(stderr, - _ - ("%s: option `--%s' doesn't allow an argument\n"), - argv[0], pfound->name); - else - /* +option or -option */ - fprintf(stderr, - _ - ("%s: option `%c%s' doesn't allow an argument\n"), - argv[0], argv[optind - 1][0], pfound->name); - } - - nextchar += strlen(nextchar); - - optopt = pfound->val; - return '?'; - } - } - else if (pfound->has_arg == 1) - { - if (optind < argc) - optarg = argv[optind++]; - else - { - if (opterr) - fprintf(stderr, _("%s: option `%s' requires an argument\n"), - argv[0], argv[optind - 1]); - nextchar += strlen(nextchar); - optopt = pfound->val; - return optstring[0] == ':' ? ':' : '?'; - } - } - 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] == '-' - || my_index(optstring, *nextchar) == NULL) - { - if (opterr) - { - if (argv[optind][1] == '-') - /* --option */ - fprintf(stderr, _("%s: unrecognized option `--%s'\n"), argv[0], - nextchar); - else - /* +option or -option */ - fprintf(stderr, _("%s: unrecognized option `%c%s'\n"), argv[0], - argv[optind][0], nextchar); - } - nextchar = (char *) ""; - optind++; - optopt = 0; - return '?'; - } - } - - /* Look at and handle the next short option-character. */ - - { - char c = *nextchar++; - char *temp = my_index(optstring, c); - - /* Increment `optind' when we start to process its last character. */ - if (*nextchar == '\0') - ++optind; - - if (temp == NULL || c == ':') - { - if (opterr) - { - if (posixly_correct) - /* 1003.2 specifies the format of this message. */ - fprintf(stderr, _("%s: illegal option -- %c\n"), argv[0], c); - else - fprintf(stderr, _("%s: invalid option -- %c\n"), argv[0], c); - } - optopt = c; - return '?'; - } - /* Convenience. Treat POSIX -W foo same as long option --foo */ - if (temp[0] == 'W' && temp[1] == ';') - { - char *nameend; - const struct option *p; - const struct option *pfound = NULL; - int exact = 0; - int ambig = 0; - int indfound = 0; - int option_index; - - /* 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) - { - /* 1003.2 specifies the format of this message. */ - fprintf(stderr, _("%s: option requires an argument -- %c\n"), - argv[0], c); - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = '?'; - return c; - } - else - /* We already incremented `optind' once; increment it again when - taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - - /* optarg is now the argument, see if it's in the table of longopts. - */ - - for (nextchar = nameend = optarg; *nameend && *nameend != '='; - nameend++) - /* Do nothing. */ ; - - /* Test all long options for either exact match or abbreviated - matches. */ - for (p = longopts, option_index = 0; p->name; p++, option_index++) - if (!strncmp(p->name, nextchar, nameend - nextchar)) - { - if ((unsigned int) (nameend - 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 or later nonexact match found. */ - ambig = 1; - } - if (ambig && !exact) - { - if (opterr) - fprintf(stderr, _("%s: option `-W %s' is ambiguous\n"), - argv[0], argv[optind]); - nextchar += strlen(nextchar); - optind++; - return '?'; - } - if (pfound != NULL) - { - option_index = indfound; - if (*nameend) - { - /* Don't test has_arg with >, because some C compilers don't - allow it to be used on enums. */ - if (pfound->has_arg) - optarg = nameend + 1; - else - { - if (opterr) - fprintf(stderr, _("\ + if (nextchar == NULL || *nextchar == '\0') { + /* Advance to the next ARGV-element. */ + + /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been + moved back by the user (who may also have changed the arguments). */ + if (last_nonopt > optind) + last_nonopt = optind; + if (first_nonopt > optind) + first_nonopt = optind; + + 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((char **) argv); + else if (last_nonopt != optind) + first_nonopt = optind; + + /* Skip any additional non-options and extend the range of + non-options previously skipped. */ + + while (optind < argc && NONOPTION_P) + optind++; + last_nonopt = optind; + } + + /* The 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((char **) 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 -1; + } + + /* 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 (NONOPTION_P) { + if (ordering == REQUIRE_ORDER) + return -1; + optarg = argv[optind++]; + return 1; + } + + /* We have found another option-ARGV-element. Skip the initial + punctuation. */ + + nextchar = (argv[optind] + 1 + (longopts != NULL && argv[optind][1] == '-')); + } + + /* Decode the current option-ARGV-element. */ + + /* Check whether the ARGV-element is a long option. + + If long_only and the ARGV-element has the form "-f", where f is a valid + short option, don't consider it an abbreviated form of a long option + that starts with f. Otherwise there would be no way to give the -f + short option. + + On the other hand, if there's a long option "fubar" and the + ARGV-element is "-fu", do consider that an abbreviation of the long + option, just like "--fu", and not "-f" with arg "u". + + This distinction seems to be the most useful approach. */ + + if (longopts != NULL && (argv[optind][1] == '-' || (long_only && (argv[optind][2] + || !my_index(optstring, argv[optind] + [1]))))) { + char *nameend; + const struct option *p; + const struct option *pfound = NULL; + int exact = 0; + int ambig = 0; + int indfound = -1; + int option_index; + + for (nameend = nextchar; *nameend && *nameend != '='; nameend++) + /* Do nothing. */ ; + + /* Test all long options for either exact match or abbreviated matches. + */ + for (p = longopts, option_index = 0; p->name; p++, option_index++) + if (!strncmp(p->name, nextchar, nameend - nextchar)) { + if ((unsigned int) (nameend - nextchar) == (unsigned int) 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 or later nonexact match found. */ + ambig = 1; + } + + if (ambig && !exact) { + if (opterr) + fprintf(stderr, _("%s: option `%s' is ambiguous\n"), argv[0], argv[optind]); + nextchar += strlen(nextchar); + optind++; + optopt = 0; + return '?'; + } + + if (pfound != NULL) { + option_index = indfound; + optind++; + if (*nameend) { + /* Don't test has_arg with >, because some C compilers don't + allow it to be used on enums. */ + if (pfound->has_arg) + optarg = nameend + 1; + else { + if (opterr) { + if (argv[optind - 1][1] == '-') + /* --option */ + fprintf(stderr, + _ + ("%s: option `--%s' doesn't allow an argument\n"), + argv[0], pfound->name); + else + /* +option or -option */ + fprintf(stderr, + _ + ("%s: option `%c%s' doesn't allow an argument\n"), + argv[0], argv[optind - 1][0], pfound->name); + } + + nextchar += strlen(nextchar); + + optopt = pfound->val; + return '?'; + } + } else if (pfound->has_arg == 1) { + if (optind < argc) + optarg = argv[optind++]; + else { + if (opterr) + fprintf(stderr, + _ + ("%s: option `%s' requires an argument\n"), + argv[0], argv[optind - 1]); + nextchar += strlen(nextchar); + optopt = pfound->val; + return optstring[0] == ':' ? ':' : '?'; + } + } + 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] == '-' || my_index(optstring, *nextchar) == NULL) { + if (opterr) { + if (argv[optind][1] == '-') + /* --option */ + fprintf(stderr, _("%s: unrecognized option `--%s'\n"), argv[0], nextchar); + else + /* +option or -option */ + fprintf(stderr, + _ + ("%s: unrecognized option `%c%s'\n"), + argv[0], argv[optind][0], nextchar); + } + nextchar = (char *) ""; + optind++; + optopt = 0; + return '?'; + } + } + + /* Look at and handle the next short option-character. */ + + { + char c = *nextchar++; + char *temp = my_index(optstring, c); + + /* Increment `optind' when we start to process its last character. */ + if (*nextchar == '\0') + ++optind; + + if (temp == NULL || c == ':') { + if (opterr) { + if (posixly_correct) + /* 1003.2 specifies the format of this message. */ + fprintf(stderr, _("%s: illegal option -- %c\n"), argv[0], c); + else + fprintf(stderr, _("%s: invalid option -- %c\n"), argv[0], c); + } + optopt = c; + return '?'; + } + /* Convenience. Treat POSIX -W foo same as long option --foo */ + if (temp[0] == 'W' && temp[1] == ';') { + char *nameend; + const struct option *p; + const struct option *pfound = NULL; + int exact = 0; + int ambig = 0; + int indfound = 0; + int option_index; + + /* 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) { + /* 1003.2 specifies the format of this message. */ + fprintf(stderr, _("%s: option requires an argument -- %c\n"), argv[0], c); + } + optopt = c; + if (optstring[0] == ':') + c = ':'; + else + c = '?'; + return c; + } else + /* We already incremented `optind' once; increment it again when + taking next ARGV-elt as argument. */ + optarg = argv[optind++]; + + /* optarg is now the argument, see if it's in the table of longopts. + */ + + for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) + /* Do nothing. */ ; + + /* Test all long options for either exact match or abbreviated + matches. */ + for (p = longopts, option_index = 0; p->name; p++, option_index++) + if (!strncmp(p->name, nextchar, nameend - nextchar)) { + if ((unsigned int) (nameend - 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 or later nonexact match found. */ + ambig = 1; + } + if (ambig && !exact) { + if (opterr) + fprintf(stderr, _("%s: option `-W %s' is ambiguous\n"), argv[0], argv[optind]); + nextchar += strlen(nextchar); + optind++; + return '?'; + } + if (pfound != NULL) { + option_index = indfound; + if (*nameend) { + /* Don't test has_arg with >, because some C compilers don't + allow it to be used on enums. */ + if (pfound->has_arg) + optarg = nameend + 1; + else { + if (opterr) + fprintf(stderr, _("\ %s: option `-W %s' doesn't allow an argument\n"), argv[0], pfound->name); - nextchar += strlen(nextchar); - return '?'; - } - } - else if (pfound->has_arg == 1) - { - if (optind < argc) - optarg = argv[optind++]; - else - { - if (opterr) - fprintf(stderr, - _("%s: option `%s' requires an argument\n"), - argv[0], argv[optind - 1]); - nextchar += strlen(nextchar); - return optstring[0] == ':' ? ':' : '?'; - } - } - nextchar += strlen(nextchar); - if (longind != NULL) - *longind = option_index; - if (pfound->flag) - { - *(pfound->flag) = pfound->val; - return 0; - } - return pfound->val; - } - nextchar = NULL; - return 'W'; /* Let the application handle it. - */ - } - if (temp[1] == ':') - { - if (temp[2] == ':') - { - /* This is an option that accepts an argument optionally. */ - if (*nextchar != '\0') - { - optarg = nextchar; - optind++; - } - else - optarg = NULL; - 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) - { - /* 1003.2 specifies the format of this message. */ - fprintf(stderr, - _("%s: option requires an argument -- %c\n"), - argv[0], c); - } - optopt = c; - if (optstring[0] == ':') - c = ':'; - else - c = '?'; - } - else - /* We already incremented `optind' once; increment it again - when taking next ARGV-elt as argument. */ - optarg = argv[optind++]; - nextchar = NULL; - } - } - return c; - } + nextchar += strlen(nextchar); + return '?'; + } + } else if (pfound->has_arg == 1) { + if (optind < argc) + optarg = argv[optind++]; + else { + if (opterr) + fprintf(stderr, + _ + ("%s: option `%s' requires an argument\n"), + argv[0], argv[optind - 1]); + nextchar += strlen(nextchar); + return optstring[0] == ':' ? ':' : '?'; + } + } + nextchar += strlen(nextchar); + if (longind != NULL) + *longind = option_index; + if (pfound->flag) { + *(pfound->flag) = pfound->val; + return 0; + } + return pfound->val; + } + nextchar = NULL; + return 'W'; /* Let the application handle it. + */ + } + if (temp[1] == ':') { + if (temp[2] == ':') { + /* This is an option that accepts an argument optionally. */ + if (*nextchar != '\0') { + optarg = nextchar; + optind++; + } else + optarg = NULL; + 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) { + /* 1003.2 specifies the format of this message. */ + fprintf(stderr, + _("%s: option requires an argument -- %c\n"), argv[0], c); + } + optopt = c; + if (optstring[0] == ':') + c = ':'; + else + c = '?'; + } else + /* We already incremented `optind' once; increment it again + when taking next ARGV-elt as argument. */ + optarg = argv[optind++]; + nextchar = NULL; + } + } + return c; + } } -int -getopt(argc, argv, optstring) - int argc; - char *const *argv; - const char *optstring; +int getopt(argc, argv, optstring) +int argc; +char *const *argv; +const char *optstring; { - return _getopt_internal(argc, argv, optstring, (const struct option *) 0, - (int *) 0, 0); + return _getopt_internal(argc, argv, optstring, (const struct option *) 0, (int *) 0, 0); } -#endif /* Not ELIDE_CODE. */ +#endif /* Not ELIDE_CODE. */ #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 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 == -1) - 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 '?': - 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); + int c; + int digit_optind = 0; + + while (1) { + int this_option_optind = optind ? optind : 1; + + c = getopt(argc, argv, "abc:d:0123456789"); + if (c == -1) + 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 '?': + 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 */ +#endif /* TEST */ |