| /* cgetopt.cc provide access to the C getopt library. |
| |
| Copyright (C) 2009-2023 Free Software Foundation, Inc. |
| Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>. |
| |
| This file is part of GNU Modula-2. |
| |
| GNU Modula-2 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 3, or (at your option) |
| any later version. |
| |
| GNU Modula-2 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. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <getopt.h> |
| #include <m2rts.h> |
| #include <stdio.h> |
| #include <config.h> |
| |
| #define EXPORT(FUNC) m2pim ## _cgetopt_ ## FUNC |
| #define M2EXPORT(FUNC) m2pim ## _M2_cgetopt_ ## FUNC |
| #define M2LIBNAME "m2pim" |
| |
| #if !defined(_) |
| #define _(X) X |
| #endif |
| |
| extern "C" {char *EXPORT(optarg);} |
| extern "C" {int EXPORT(optind);} |
| extern "C" {int EXPORT(opterr);} |
| extern "C" {int EXPORT(optopt);} |
| |
| int |
| libiberty_getopt_long_only (int argc, char *const *argv, const char *options, |
| const struct option *long_options, int *opt_index); |
| int |
| libiberty_getopt_long (int argc, char *const *argv, const char *options, |
| const struct option *long_options, int *opt_index); |
| |
| |
| typedef struct cgetopt_Options_s |
| { |
| struct option *cinfo; |
| unsigned int empty_slot; |
| } cgetopt_Options; |
| |
| /* InitOptions a constructor for Options. */ |
| |
| extern "C" cgetopt_Options * |
| EXPORT(InitOptions) (void) |
| { |
| cgetopt_Options *o = (cgetopt_Options *)malloc (sizeof (cgetopt_Options)); |
| o->cinfo = (struct option *)malloc (sizeof (struct option)); |
| o->empty_slot = 1; |
| return o; |
| } |
| |
| /* KillOptions a deconstructor for Options. Returns NULL after freeing |
| up all allocated memory associated with o. */ |
| |
| extern "C" cgetopt_Options * |
| EXPORT(KillOptions) (cgetopt_Options *o) |
| { |
| free (o->cinfo); |
| free (o); |
| return NULL; |
| } |
| |
| /* SetOption set option[index] with {name, has_arg, flag, val}. */ |
| |
| extern "C" void |
| EXPORT(SetOption) (cgetopt_Options *o, unsigned int index, char *name, |
| int has_arg, int *flag, int val) |
| { |
| if (index >= o->empty_slot) |
| { |
| o->cinfo |
| = (struct option *)realloc (o->cinfo, |
| sizeof (struct option) * (index + 1)); |
| o->empty_slot = index + 1; |
| } |
| o->cinfo[index].name = name; |
| o->cinfo[index].has_arg = has_arg; |
| /* Set flag to NULL if name is NULL, as flag comes from a VAR parameter |
| (which cannot be NIL in modula-2). */ |
| if (name == NULL) |
| flag = NULL; |
| o->cinfo[index].flag = flag; |
| o->cinfo[index].val = val; |
| } |
| |
| /* GetLongOptionArray returns a pointer to the C array containing all |
| long options. */ |
| |
| extern "C" struct option * |
| EXPORT(GetLongOptionArray) (cgetopt_Options *o) |
| { |
| return o->cinfo; |
| } |
| |
| |
| /* The following code has been taken from libiberty/getopt.c and is |
| conditionally compiled if long option support is absent on the target. |
| It has been changed just to deal with the long option functions as we |
| assume all targets have getopt. This code also keeps all data and code |
| static as the interface code only comes though functions defined in |
| cgetopt.def. */ |
| |
| #if (! defined(HAVE_GETOPT_LONG_ONLY)) || (! defined(HAVE_GETOPT_LONG)) |
| /* 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. */ |
| |
| static char *cgetopt_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 -1, 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. */ |
| |
| /* 1003.2 says this must be 1 before any call. */ |
| static int cgetopt_optind = 1; |
| |
| /* Formerly, initialization of getopt depended on optind==0, which |
| causes problems with re-calling getopt as programs generally don't |
| know that. */ |
| |
| static int __getopt_initialized = 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. */ |
| |
| static int cgetopt_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. */ |
| |
| static int cgetopt_optopt = '?'; |
| |
| /* 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 -1 with `optind' != ARGC. */ |
| |
| static enum |
| { |
| REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
| } ordering; |
| |
| /* Value of POSIXLY_CORRECT environment variable. */ |
| static char *posixly_correct; |
| |
| #ifdef __GNU_LIBRARY__ |
| /* We want to avoid inclusion of string.h with non-GNU libraries |
| because there are many ways it can cause trouble. |
| On some systems, it contains special magic macros that don't work |
| in GCC. */ |
| # include <string.h> |
| # define my_index strchr |
| #else |
| |
| # if HAVE_STRING_H |
| # include <string.h> |
| # else |
| # if HAVE_STRINGS_H |
| # include <strings.h> |
| # endif |
| # endif |
| |
| /* Avoid depending on library functions or files |
| whose names are inconsistent. */ |
| |
| #if HAVE_STDLIB_H && HAVE_DECL_GETENV |
| # include <stdlib.h> |
| #elif !defined(getenv) |
| # ifdef __cplusplus |
| extern "C" { |
| # endif /* __cplusplus */ |
| extern char *getenv (const char *); |
| # ifdef __cplusplus |
| } |
| # endif /* __cplusplus */ |
| #endif |
| |
| static char * |
| my_index (const char *str, int chr) |
| { |
| while (*str) |
| { |
| if (*str == chr) |
| return (char *) str; |
| str++; |
| } |
| return 0; |
| } |
| |
| /* If using GCC, we can safely declare strlen this way. |
| If not using GCC, it is ok not to declare it. */ |
| #ifdef __GNUC__ |
| /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. |
| That was relevant to code that was here before. */ |
| # if (!defined __STDC__ || !__STDC__) && !defined strlen |
| /* 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 __GNU_LIBRARY__ */ |
| |
| /* 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; |
| |
| #ifdef _LIBC |
| /* Bash 2.0 gives us an environment variable containing flags |
| indicating ARGV elements that should not be considered arguments. */ |
| |
| /* Defined in getopt_init.c */ |
| extern char *__getopt_nonoption_flags; |
| |
| static int nonoption_flags_max_len; |
| static int nonoption_flags_len; |
| |
| static int original_argc; |
| 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) |
| { |
| /* 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 */ |
| |
| # define SWAP_FLAGS(ch1, ch2) \ |
| if (nonoption_flags_len > 0) \ |
| { \ |
| char __tmp = __getopt_nonoption_flags[ch1]; \ |
| __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ |
| __getopt_nonoption_flags[ch2] = __tmp; \ |
| } |
| #else /* !_LIBC */ |
| # define SWAP_FLAGS(ch1, ch2) |
| #endif /* _LIBC */ |
| |
| /* 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. */ |
| |
| #if defined __STDC__ && __STDC__ |
| static void exchange (char **); |
| #endif |
| |
| static void |
| exchange (char **argv) |
| { |
| int bottom = first_nonopt; |
| int middle = last_nonopt; |
| int top = cgetopt_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. */ |
| |
| #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 = (char *) 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; |
| 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; |
| 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 += (cgetopt_optind - last_nonopt); |
| last_nonopt = cgetopt_optind; |
| } |
| |
| /* Initialize the internal data when the first call is made. */ |
| |
| #if defined __STDC__ && __STDC__ |
| static const char *_getopt_initialize (int, char *const *, const char *); |
| #endif |
| static const char * |
| _getopt_initialize (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. */ |
| |
| first_nonopt = last_nonopt = cgetopt_optind; |
| |
| nextchar = NULL; |
| |
| posixly_correct = getenv ("POSIXLY_CORRECT"); |
| |
| /* 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; |
| |
| #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; |
| #endif |
| |
| return optstring; |
| } |
| |
| /* 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 -1. |
| 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 '?' after printing an error message. If you set `opterr' to |
| zero, the error message is suppressed but we still return '?'. |
| |
| 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. |
| |
| The elements of ARGV aren't really const, because we permute them. |
| But we pretend they're const in the prototype to be compatible |
| with other systems. |
| |
| 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 *const *argv, const char *optstring, |
| const struct option *longopts, |
| int *longind, int long_only) |
| { |
| cgetopt_optarg = NULL; |
| |
| if (cgetopt_optind == 0 || !__getopt_initialized) |
| { |
| if (cgetopt_optind == 0) |
| cgetopt_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[cgetopt_optind][0] != '-' || argv[cgetopt_optind][1] == '\0' \ |
| || (cgetopt_optind < nonoption_flags_len \ |
| && __getopt_nonoption_flags[cgetopt_optind] == '1')) |
| #else |
| # define NONOPTION_P (argv[cgetopt_optind][0] != '-' || argv[cgetopt_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 > cgetopt_optind) |
| last_nonopt = cgetopt_optind; |
| if (first_nonopt > cgetopt_optind) |
| first_nonopt = cgetopt_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 != cgetopt_optind) |
| exchange ((char **) argv); |
| else if (last_nonopt != cgetopt_optind) |
| first_nonopt = cgetopt_optind; |
| |
| /* Skip any additional non-options |
| and extend the range of non-options previously skipped. */ |
| |
| while (cgetopt_optind < argc && NONOPTION_P) |
| cgetopt_optind++; |
| last_nonopt = cgetopt_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 (cgetopt_optind != argc && !strcmp (argv[cgetopt_optind], "--")) |
| { |
| cgetopt_optind++; |
| |
| if (first_nonopt != last_nonopt && last_nonopt != cgetopt_optind) |
| exchange ((char **) argv); |
| else if (first_nonopt == last_nonopt) |
| first_nonopt = cgetopt_optind; |
| last_nonopt = argc; |
| |
| cgetopt_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 (cgetopt_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) |
| cgetopt_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; |
| cgetopt_optarg = argv[cgetopt_optind++]; |
| return 1; |
| } |
| |
| /* We have found another option-ARGV-element. |
| Skip the initial punctuation. */ |
| |
| nextchar = (argv[cgetopt_optind] + 1 |
| + (longopts != NULL && argv[cgetopt_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[cgetopt_optind][1] == '-' |
| || (long_only && (argv[cgetopt_optind][2] || !my_index (optstring, argv[cgetopt_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 (cgetopt_opterr) |
| fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
| argv[0], argv[cgetopt_optind]); |
| nextchar += strlen (nextchar); |
| cgetopt_optind++; |
| cgetopt_optopt = 0; |
| return '?'; |
| } |
| |
| if (pfound != NULL) |
| { |
| option_index = indfound; |
| cgetopt_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) |
| cgetopt_optarg = nameend + 1; |
| else |
| { |
| if (cgetopt_opterr) |
| { |
| if (argv[cgetopt_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[cgetopt_optind - 1][0], pfound->name); |
| |
| nextchar += strlen (nextchar); |
| |
| cgetopt_optopt = pfound->val; |
| return '?'; |
| } |
| } |
| } |
| else if (pfound->has_arg == 1) |
| { |
| if (cgetopt_optind < argc) |
| cgetopt_optarg = argv[cgetopt_optind++]; |
| else |
| { |
| if (cgetopt_opterr) |
| fprintf (stderr, |
| _("%s: option `%s' requires an argument\n"), |
| argv[0], argv[cgetopt_optind - 1]); |
| nextchar += strlen (nextchar); |
| cgetopt_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[cgetopt_optind][1] == '-' |
| || my_index (optstring, *nextchar) == NULL) |
| { |
| if (cgetopt_opterr) |
| { |
| if (argv[cgetopt_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[cgetopt_optind][0], nextchar); |
| } |
| nextchar = (char *) ""; |
| cgetopt_optind++; |
| cgetopt_optopt = 0; |
| return '?'; |
| } |
| } |
| |
| /* Look at and handle the next short option-character. */ |
| |
| { |
| char c = *nextchar++; |
| const char *temp = my_index (optstring, c); |
| |
| /* Increment `cgetopt_optind' when we start to process its last character. */ |
| if (*nextchar == '\0') |
| ++cgetopt_optind; |
| |
| if (temp == NULL || c == ':') |
| { |
| if (cgetopt_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); |
| } |
| cgetopt_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') |
| { |
| cgetopt_optarg = nextchar; |
| /* If we end this ARGV-element by taking the rest as an arg, |
| we must advance to the next element now. */ |
| cgetopt_optind++; |
| } |
| else if (cgetopt_optind == argc) |
| { |
| if (cgetopt_opterr) |
| { |
| /* 1003.2 specifies the format of this message. */ |
| fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
| argv[0], c); |
| } |
| cgetopt_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. */ |
| cgetopt_optarg = argv[cgetopt_optind++]; |
| |
| /* cgetopt_optarg is now the argument, see if it's in the |
| table of longopts. */ |
| |
| for (nextchar = nameend = cgetopt_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 (cgetopt_opterr) |
| fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
| argv[0], argv[cgetopt_optind]); |
| nextchar += strlen (nextchar); |
| cgetopt_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) |
| cgetopt_optarg = nameend + 1; |
| else |
| { |
| if (cgetopt_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 (cgetopt_optind < argc) |
| cgetopt_optarg = argv[cgetopt_optind++]; |
| else |
| { |
| if (cgetopt_opterr) |
| fprintf (stderr, |
| _("%s: option `%s' requires an argument\n"), |
| argv[0], argv[cgetopt_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') |
| { |
| cgetopt_optarg = nextchar; |
| cgetopt_optind++; |
| } |
| else |
| cgetopt_optarg = NULL; |
| nextchar = NULL; |
| } |
| else |
| { |
| /* This is an option that requires an argument. */ |
| if (*nextchar != '\0') |
| { |
| cgetopt_optarg = nextchar; |
| /* If we end this ARGV-element by taking the rest as an arg, |
| we must advance to the next element now. */ |
| cgetopt_optind++; |
| } |
| else if (cgetopt_optind == argc) |
| { |
| if (cgetopt_opterr) |
| { |
| /* 1003.2 specifies the format of this message. */ |
| fprintf (stderr, |
| _("%s: option requires an argument -- %c\n"), |
| argv[0], c); |
| } |
| cgetopt_optopt = c; |
| if (optstring[0] == ':') |
| c = ':'; |
| else |
| c = '?'; |
| } |
| else |
| /* We already incremented `optind' once; |
| increment it again when taking next ARGV-elt as argument. */ |
| cgetopt_optarg = argv[cgetopt_optind++]; |
| nextchar = NULL; |
| } |
| } |
| return c; |
| } |
| } |
| |
| int |
| libiberty_getopt_long (int argc, char *const *argv, const char *options, |
| const struct option *long_options, int *opt_index) |
| { |
| return _getopt_internal (argc, argv, options, long_options, opt_index, 0); |
| } |
| |
| /* Like getopt_long, but '-' as well as '--' can indicate a long option. |
| If an option that starts with '-' (not '--') doesn't match a long option, |
| but does match a short option, it is parsed as a short option |
| instead. */ |
| |
| int |
| libiberty_getopt_long_only (int argc, char *const *argv, const char *options, |
| const struct option *long_options, int *opt_index) |
| { |
| return _getopt_internal (argc, argv, options, long_options, opt_index, 1); |
| } |
| |
| #endif |
| |
| |
| extern "C" char |
| EXPORT(getopt) (int argc, char *argv[], char *optstring) |
| { |
| char r = getopt (argc, argv, optstring); |
| |
| EXPORT(optarg) = optarg; |
| EXPORT(optind) = optind; |
| EXPORT(opterr) = opterr; |
| EXPORT(optopt) = optopt; |
| |
| if (r == (char)-1) |
| return (char)0; |
| return r; |
| } |
| |
| extern "C" int |
| EXPORT(getopt_long) (int argc, char *argv[], char *optstring, |
| const struct option *longopts, int *longindex) |
| { |
| #if defined(HAVE_GETOPT_LONG) |
| int r = getopt_long (argc, argv, optstring, longopts, longindex); |
| |
| EXPORT(optarg) = optarg; |
| EXPORT(optind) = optind; |
| EXPORT(opterr) = opterr; |
| EXPORT(optopt) = optopt; |
| #else |
| int r = libiberty_getopt_long (argc, argv, optstring, longopts, longindex); |
| |
| EXPORT(optarg) = cgetopt_optarg; |
| EXPORT(optind) = cgetopt_optind; |
| EXPORT(opterr) = cgetopt_opterr; |
| EXPORT(optopt) = cgetopt_optopt; |
| #endif |
| |
| return r; |
| } |
| |
| |
| extern "C" int |
| EXPORT(getopt_long_only) (int argc, char *argv[], char *optstring, |
| const struct option *longopts, int *longindex) |
| { |
| #if defined(HAVE_GETOPT_LONG_ONLY) |
| int r = getopt_long_only (argc, argv, optstring, longopts, longindex); |
| |
| EXPORT(optarg) = optarg; |
| EXPORT(optind) = optind; |
| EXPORT(opterr) = opterr; |
| EXPORT(optopt) = optopt; |
| #else |
| int r = libiberty_getopt_long_only (argc, argv, optstring, longopts, longindex); |
| |
| EXPORT(optarg) = cgetopt_optarg; |
| EXPORT(optind) = cgetopt_optind; |
| EXPORT(opterr) = cgetopt_opterr; |
| EXPORT(optopt) = cgetopt_optopt; |
| #endif |
| |
| return r; |
| } |
| |
| |
| /* GNU Modula-2 linking fodder. */ |
| |
| extern "C" void |
| M2EXPORT(init) (int, char *argv[], char *env[]) |
| { |
| } |
| |
| extern "C" void |
| M2EXPORT(fini) (int, char *argv[], char *env[]) |
| { |
| } |
| |
| extern "C" void |
| M2EXPORT(dep) (void) |
| { |
| } |
| |
| extern "C" void __attribute__((__constructor__)) |
| M2EXPORT(ctor) (void) |
| { |
| m2pim_M2RTS_RegisterModule ("cgetopt", M2LIBNAME, |
| M2EXPORT(init), M2EXPORT(fini), |
| M2EXPORT(dep)); |
| } |