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nagios-plugins  1.4.16
Defines | Enumerations | Functions | Variables
getopt.c File Reference
#include <config.h>
#include "getopt.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "gettext.h"
#include "getopt_int.h"

Go to the source code of this file.

Defines

#define _(msgid)   gettext (msgid)
#define SWAP_FLAGS(ch1, ch2)
#define NONOPTION_P   (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')

Enumerations

enum  { POSIXLY_CORRECT = 1 }

Functions

static void exchange (char **argv, struct _getopt_data *d)
static const char * _getopt_initialize (int argc _GL_UNUSED, char **argv _GL_UNUSED, const char *optstring, struct _getopt_data *d, int posixly_correct)
int _getopt_internal_r (int argc, char **argv, const char *optstring, const struct option *longopts, int *longind, int long_only, struct _getopt_data *d, int posixly_correct)
int _getopt_internal (int argc, char **argv, const char *optstring, const struct option *longopts, int *longind, int long_only, int posixly_correct)
int getopt (int argc, char *const *argv, const char *optstring)

Variables

char * optarg
int optind = 1
 external
int opterr = 1
int optopt = '?'
static struct _getopt_data

Define Documentation

#define _ (   msgid)    gettext (msgid)

Definition at line 37 of file getopt.c.

#define NONOPTION_P   (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
#define SWAP_FLAGS (   ch1,
  ch2 
)

Definition at line 131 of file getopt.c.


Enumeration Type Documentation

anonymous enum
Enumerator:
POSIXLY_CORRECT 

Definition at line 1100 of file getopt.c.

{ POSIXLY_CORRECT = 1 };

Function Documentation

static const char* _getopt_initialize ( int argc  _GL_UNUSED,
char **argv  _GL_UNUSED,
const char *  optstring,
struct _getopt_data d,
int  posixly_correct 
) [static]

Definition at line 225 of file getopt.c.

{
  /* 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.  */

  d->__first_nonopt = d->__last_nonopt = d->optind;

  d->__nextchar = NULL;

  d->__posixly_correct = posixly_correct || !!getenv ("POSIXLY_CORRECT");

  /* Determine how to handle the ordering of options and nonoptions.  */

  if (optstring[0] == '-')
    {
      d->__ordering = RETURN_IN_ORDER;
      ++optstring;
    }
  else if (optstring[0] == '+')
    {
      d->__ordering = REQUIRE_ORDER;
      ++optstring;
    }
  else if (d->__posixly_correct)
    d->__ordering = REQUIRE_ORDER;
  else
    d->__ordering = PERMUTE;

#if defined _LIBC && defined USE_NONOPTION_FLAGS
  if (!d->__posixly_correct
      && argc == __libc_argc && argv == __libc_argv)
    {
      if (d->__nonoption_flags_max_len == 0)
        {
          if (__getopt_nonoption_flags == NULL
              || __getopt_nonoption_flags[0] == '\0')
            d->__nonoption_flags_max_len = -1;
          else
            {
              const char *orig_str = __getopt_nonoption_flags;
              int len = d->__nonoption_flags_max_len = strlen (orig_str);
              if (d->__nonoption_flags_max_len < argc)
                d->__nonoption_flags_max_len = argc;
              __getopt_nonoption_flags =
                (char *) malloc (d->__nonoption_flags_max_len);
              if (__getopt_nonoption_flags == NULL)
                d->__nonoption_flags_max_len = -1;
              else
                memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
                        '\0', d->__nonoption_flags_max_len - len);
            }
        }
      d->__nonoption_flags_len = d->__nonoption_flags_max_len;
    }
  else
    d->__nonoption_flags_len = 0;
#endif

  return optstring;
}

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int _getopt_internal ( int  argc,
char **  argv,
const char *  optstring,
const struct option longopts,
int *  longind,
int  long_only,
int  posixly_correct 
)

Definition at line 1075 of file getopt.c.

{
  int result;

  getopt_data.optind = optind;
  getopt_data.opterr = opterr;

  result = _getopt_internal_r (argc, argv, optstring, longopts,
                               longind, long_only, &getopt_data,
                               posixly_correct);

  optind = getopt_data.optind;
  optarg = getopt_data.optarg;
  optopt = getopt_data.optopt;

  return result;
}

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int _getopt_internal_r ( int  argc,
char **  argv,
const char *  optstring,
const struct option longopts,
int *  longind,
int  long_only,
struct _getopt_data d,
int  posixly_correct 
)

Definition at line 346 of file getopt.c.

{
  int print_errors = d->opterr;

  if (argc < 1)
    return -1;

  d->optarg = NULL;

  if (d->optind == 0 || !d->__initialized)
    {
      if (d->optind == 0)
        d->optind = 1;  /* Don't scan ARGV[0], the program name.  */
      optstring = _getopt_initialize (argc, argv, optstring, d,
                                      posixly_correct);
      d->__initialized = 1;
    }
  else if (optstring[0] == '-' || optstring[0] == '+')
    optstring++;
  if (optstring[0] == ':')
    print_errors = 0;

  /* 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.  */
#if defined _LIBC && defined USE_NONOPTION_FLAGS
# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
                      || (d->optind < d->__nonoption_flags_len                \
                          && __getopt_nonoption_flags[d->optind] == '1'))
#else
# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
#endif

  if (d->__nextchar == NULL || *d->__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 (d->__last_nonopt > d->optind)
        d->__last_nonopt = d->optind;
      if (d->__first_nonopt > d->optind)
        d->__first_nonopt = d->optind;

      if (d->__ordering == PERMUTE)
        {
          /* If we have just processed some options following some non-options,
             exchange them so that the options come first.  */

          if (d->__first_nonopt != d->__last_nonopt
              && d->__last_nonopt != d->optind)
            exchange ((char **) argv, d);
          else if (d->__last_nonopt != d->optind)
            d->__first_nonopt = d->optind;

          /* Skip any additional non-options
             and extend the range of non-options previously skipped.  */

          while (d->optind < argc && NONOPTION_P)
            d->optind++;
          d->__last_nonopt = d->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 (d->optind != argc && !strcmp (argv[d->optind], "--"))
        {
          d->optind++;

          if (d->__first_nonopt != d->__last_nonopt
              && d->__last_nonopt != d->optind)
            exchange ((char **) argv, d);
          else if (d->__first_nonopt == d->__last_nonopt)
            d->__first_nonopt = d->optind;
          d->__last_nonopt = argc;

          d->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 (d->optind == argc)
        {
          /* Set the next-arg-index to point at the non-options
             that we previously skipped, so the caller will digest them.  */
          if (d->__first_nonopt != d->__last_nonopt)
            d->optind = d->__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 (d->__ordering == REQUIRE_ORDER)
            return -1;
          d->optarg = argv[d->optind++];
          return 1;
        }

      /* We have found another option-ARGV-element.
         Skip the initial punctuation.  */

      d->__nextchar = (argv[d->optind] + 1
                  + (longopts != NULL && argv[d->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[d->optind][1] == '-'
          || (long_only && (argv[d->optind][2]
                            || !strchr (optstring, argv[d->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 = d->__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, d->__nextchar, nameend - d->__nextchar))
          {
            if ((unsigned int) (nameend - d->__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 if (long_only
                     || pfound->has_arg != p->has_arg
                     || pfound->flag != p->flag
                     || pfound->val != p->val)
              /* Second or later nonexact match found.  */
              ambig = 1;
          }

      if (ambig && !exact)
        {
          if (print_errors)
            {
#if defined _LIBC && defined USE_IN_LIBIO
              char *buf;

              if (__asprintf (&buf, _("%s: option '%s' is ambiguous\n"),
                              argv[0], argv[d->optind]) >= 0)
                {
                  _IO_flockfile (stderr);

                  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                  ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

                  __fxprintf (NULL, "%s", buf);

                  ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                  _IO_funlockfile (stderr);

                  free (buf);
                }
#else
              fprintf (stderr, _("%s: option '%s' is ambiguous\n"),
                       argv[0], argv[d->optind]);
#endif
            }
          d->__nextchar += strlen (d->__nextchar);
          d->optind++;
          d->optopt = 0;
          return '?';
        }

      if (pfound != NULL)
        {
          option_index = indfound;
          d->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)
                d->optarg = nameend + 1;
              else
                {
                  if (print_errors)
                    {
#if defined _LIBC && defined USE_IN_LIBIO
                      char *buf;
                      int n;
#endif

                      if (argv[d->optind - 1][1] == '-')
                        {
                          /* --option */
#if defined _LIBC && defined USE_IN_LIBIO
                          n = __asprintf (&buf, _("\
%s: option '--%s' doesn't allow an argument\n"),
                                          argv[0], pfound->name);
#else
                          fprintf (stderr, _("\
%s: option '--%s' doesn't allow an argument\n"),
                                   argv[0], pfound->name);
#endif
                        }
                      else
                        {
                          /* +option or -option */
#if defined _LIBC && defined USE_IN_LIBIO
                          n = __asprintf (&buf, _("\
%s: option '%c%s' doesn't allow an argument\n"),
                                          argv[0], argv[d->optind - 1][0],
                                          pfound->name);
#else
                          fprintf (stderr, _("\
%s: option '%c%s' doesn't allow an argument\n"),
                                   argv[0], argv[d->optind - 1][0],
                                   pfound->name);
#endif
                        }

#if defined _LIBC && defined USE_IN_LIBIO
                      if (n >= 0)
                        {
                          _IO_flockfile (stderr);

                          int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                          ((_IO_FILE *) stderr)->_flags2
                            |= _IO_FLAGS2_NOTCANCEL;

                          __fxprintf (NULL, "%s", buf);

                          ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                          _IO_funlockfile (stderr);

                          free (buf);
                        }
#endif
                    }

                  d->__nextchar += strlen (d->__nextchar);

                  d->optopt = pfound->val;
                  return '?';
                }
            }
          else if (pfound->has_arg == 1)
            {
              if (d->optind < argc)
                d->optarg = argv[d->optind++];
              else
                {
                  if (print_errors)
                    {
#if defined _LIBC && defined USE_IN_LIBIO
                      char *buf;

                      if (__asprintf (&buf, _("\
%s: option '--%s' requires an argument\n"),
                                      argv[0], pfound->name) >= 0)
                        {
                          _IO_flockfile (stderr);

                          int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                          ((_IO_FILE *) stderr)->_flags2
                            |= _IO_FLAGS2_NOTCANCEL;

                          __fxprintf (NULL, "%s", buf);

                          ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                          _IO_funlockfile (stderr);

                          free (buf);
                        }
#else
                      fprintf (stderr,
                               _("%s: option '--%s' requires an argument\n"),
                               argv[0], pfound->name);
#endif
                    }
                  d->__nextchar += strlen (d->__nextchar);
                  d->optopt = pfound->val;
                  return optstring[0] == ':' ? ':' : '?';
                }
            }
          d->__nextchar += strlen (d->__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[d->optind][1] == '-'
          || strchr (optstring, *d->__nextchar) == NULL)
        {
          if (print_errors)
            {
#if defined _LIBC && defined USE_IN_LIBIO
              char *buf;
              int n;
#endif

              if (argv[d->optind][1] == '-')
                {
                  /* --option */
#if defined _LIBC && defined USE_IN_LIBIO
                  n = __asprintf (&buf, _("%s: unrecognized option '--%s'\n"),
                                  argv[0], d->__nextchar);
#else
                  fprintf (stderr, _("%s: unrecognized option '--%s'\n"),
                           argv[0], d->__nextchar);
#endif
                }
              else
                {
                  /* +option or -option */
#if defined _LIBC && defined USE_IN_LIBIO
                  n = __asprintf (&buf, _("%s: unrecognized option '%c%s'\n"),
                                  argv[0], argv[d->optind][0], d->__nextchar);
#else
                  fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),
                           argv[0], argv[d->optind][0], d->__nextchar);
#endif
                }

#if defined _LIBC && defined USE_IN_LIBIO
              if (n >= 0)
                {
                  _IO_flockfile (stderr);

                  int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                  ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

                  __fxprintf (NULL, "%s", buf);

                  ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                  _IO_funlockfile (stderr);

                  free (buf);
                }
#endif
            }
          d->__nextchar = (char *) "";
          d->optind++;
          d->optopt = 0;
          return '?';
        }
    }

  /* Look at and handle the next short option-character.  */

  {
    char c = *d->__nextchar++;
    const char *temp = strchr (optstring, c);

    /* Increment `optind' when we start to process its last character.  */
    if (*d->__nextchar == '\0')
      ++d->optind;

    if (temp == NULL || c == ':' || c == ';')
      {
        if (print_errors)
          {
#if defined _LIBC && defined USE_IN_LIBIO
              char *buf;
              int n;
#endif

#if defined _LIBC && defined USE_IN_LIBIO
              n = __asprintf (&buf, _("%s: invalid option -- '%c'\n"),
                              argv[0], c);
#else
              fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);
#endif

#if defined _LIBC && defined USE_IN_LIBIO
            if (n >= 0)
              {
                _IO_flockfile (stderr);

                int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

                __fxprintf (NULL, "%s", buf);

                ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                _IO_funlockfile (stderr);

                free (buf);
              }
#endif
          }
        d->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 (*d->__nextchar != '\0')
          {
            d->optarg = d->__nextchar;
            /* If we end this ARGV-element by taking the rest as an arg,
               we must advance to the next element now.  */
            d->optind++;
          }
        else if (d->optind == argc)
          {
            if (print_errors)
              {
#if defined _LIBC && defined USE_IN_LIBIO
                char *buf;

                if (__asprintf (&buf,
                                _("%s: option requires an argument -- '%c'\n"),
                                argv[0], c) >= 0)
                  {
                    _IO_flockfile (stderr);

                    int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                    ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

                    __fxprintf (NULL, "%s", buf);

                    ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                    _IO_funlockfile (stderr);

                    free (buf);
                  }
#else
                fprintf (stderr,
                         _("%s: option requires an argument -- '%c'\n"),
                         argv[0], c);
#endif
              }
            d->optopt = c;
            if (optstring[0] == ':')
              c = ':';
            else
              c = '?';
            return c;
          }
        else
          /* We already incremented `d->optind' once;
             increment it again when taking next ARGV-elt as argument.  */
          d->optarg = argv[d->optind++];

        /* optarg is now the argument, see if it's in the
           table of longopts.  */

        for (d->__nextchar = nameend = d->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, d->__nextchar, nameend - d->__nextchar))
            {
              if ((unsigned int) (nameend - d->__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 if (long_only
                       || pfound->has_arg != p->has_arg
                       || pfound->flag != p->flag
                       || pfound->val != p->val)
                /* Second or later nonexact match found.  */
                ambig = 1;
            }
        if (ambig && !exact)
          {
            if (print_errors)
              {
#if defined _LIBC && defined USE_IN_LIBIO
                char *buf;

                if (__asprintf (&buf, _("%s: option '-W %s' is ambiguous\n"),
                                argv[0], d->optarg) >= 0)
                  {
                    _IO_flockfile (stderr);

                    int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                    ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

                    __fxprintf (NULL, "%s", buf);

                    ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                    _IO_funlockfile (stderr);

                    free (buf);
                  }
#else
                fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"),
                         argv[0], d->optarg);
#endif
              }
            d->__nextchar += strlen (d->__nextchar);
            d->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)
                  d->optarg = nameend + 1;
                else
                  {
                    if (print_errors)
                      {
#if defined _LIBC && defined USE_IN_LIBIO
                        char *buf;

                        if (__asprintf (&buf, _("\
%s: option '-W %s' doesn't allow an argument\n"),
                                        argv[0], pfound->name) >= 0)
                          {
                            _IO_flockfile (stderr);

                            int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                            ((_IO_FILE *) stderr)->_flags2
                              |= _IO_FLAGS2_NOTCANCEL;

                            __fxprintf (NULL, "%s", buf);

                            ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                            _IO_funlockfile (stderr);

                            free (buf);
                          }
#else
                        fprintf (stderr, _("\
%s: option '-W %s' doesn't allow an argument\n"),
                                 argv[0], pfound->name);
#endif
                      }

                    d->__nextchar += strlen (d->__nextchar);
                    return '?';
                  }
              }
            else if (pfound->has_arg == 1)
              {
                if (d->optind < argc)
                  d->optarg = argv[d->optind++];
                else
                  {
                    if (print_errors)
                      {
#if defined _LIBC && defined USE_IN_LIBIO
                        char *buf;

                        if (__asprintf (&buf, _("\
%s: option '-W %s' requires an argument\n"),
                                        argv[0], pfound->name) >= 0)
                          {
                            _IO_flockfile (stderr);

                            int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                            ((_IO_FILE *) stderr)->_flags2
                              |= _IO_FLAGS2_NOTCANCEL;

                            __fxprintf (NULL, "%s", buf);

                            ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                            _IO_funlockfile (stderr);

                            free (buf);
                          }
#else
                        fprintf (stderr, _("\
%s: option '-W %s' requires an argument\n"),
                                 argv[0], pfound->name);
#endif
                      }
                    d->__nextchar += strlen (d->__nextchar);
                    return optstring[0] == ':' ? ':' : '?';
                  }
              }
            else
              d->optarg = NULL;
            d->__nextchar += strlen (d->__nextchar);
            if (longind != NULL)
              *longind = option_index;
            if (pfound->flag)
              {
                *(pfound->flag) = pfound->val;
                return 0;
              }
            return pfound->val;
          }
          d->__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 (*d->__nextchar != '\0')
              {
                d->optarg = d->__nextchar;
                d->optind++;
              }
            else
              d->optarg = NULL;
            d->__nextchar = NULL;
          }
        else
          {
            /* This is an option that requires an argument.  */
            if (*d->__nextchar != '\0')
              {
                d->optarg = d->__nextchar;
                /* If we end this ARGV-element by taking the rest as an arg,
                   we must advance to the next element now.  */
                d->optind++;
              }
            else if (d->optind == argc)
              {
                if (print_errors)
                  {
#if defined _LIBC && defined USE_IN_LIBIO
                    char *buf;

                    if (__asprintf (&buf, _("\
%s: option requires an argument -- '%c'\n"),
                                    argv[0], c) >= 0)
                      {
                        _IO_flockfile (stderr);

                        int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
                        ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;

                        __fxprintf (NULL, "%s", buf);

                        ((_IO_FILE *) stderr)->_flags2 = old_flags2;
                        _IO_funlockfile (stderr);

                        free (buf);
                      }
#else
                    fprintf (stderr,
                             _("%s: option requires an argument -- '%c'\n"),
                             argv[0], c);
#endif
                  }
                d->optopt = c;
                if (optstring[0] == ':')
                  c = ':';
                else
                  c = '?';
              }
            else
              /* We already incremented `optind' once;
                 increment it again when taking next ARGV-elt as argument.  */
              d->optarg = argv[d->optind++];
            d->__nextchar = NULL;
          }
      }
    return c;
  }
}

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static void exchange ( char **  argv,
struct _getopt_data d 
) [static]

Definition at line 144 of file getopt.c.

{
  int bottom = d->__first_nonopt;
  int middle = d->__last_nonopt;
  int top = d->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.  */

#if defined _LIBC && defined USE_NONOPTION_FLAGS
  /* 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 (d->__nonoption_flags_len > 0 && top >= d->__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)
        d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
      else
        {
          memset (__mempcpy (new_str, __getopt_nonoption_flags,
                             d->__nonoption_flags_max_len),
                  '\0', top + 1 - d->__nonoption_flags_max_len);
          d->__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.  */

  d->__first_nonopt += (d->optind - d->__last_nonopt);
  d->__last_nonopt = d->optind;
}

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int getopt ( int  argc,
char *const argv,
const char *  optstring 
)

Definition at line 1104 of file getopt.c.

{
  return _getopt_internal (argc, (char **) argv, optstring,
                           (const struct option *) 0,
                           (int *) 0,
                           0, POSIXLY_CORRECT);
}

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Variable Documentation

struct _getopt_data [static]

Definition at line 97 of file getopt.c.

char* optarg

Definition at line 67 of file getopt.c.

int opterr = 1

Definition at line 87 of file getopt.c.

int optind = 1

external

Definition at line 82 of file getopt.c.

int optopt = '?'

Definition at line 93 of file getopt.c.