cfls.c

OXCC is a multipass, interpreting C compiler with several language extensions. It generates an Archi

/* Index in _GETOPT_LONG_OPTIONS of the long-named option actually found.
   Only valid when a long-named option was found. */

int option_index;

/* Handle permutation of arguments.  */

/* Describe the part of ARGV that contains non-options that have
   been skipped.  `first_nonopt' is the index in ARGV of the first of them;
   `last_nonopt' is the index after the last of them.  */

static int first_nonopt;
static int last_nonopt;

/* Exchange two adjacent subsequences of ARGV.
   One subsequence is elements [first_nonopt,last_nonopt)
    which contains all the non-options that have been skipped so far.
   The other is elements [last_nonopt,optind), which contains all
    the options processed since those non-options were skipped.

   `first_nonopt' and `last_nonopt' are relocated so that they describe
    the new indices of the non-options in ARGV after they are moved.  */

static void
exchange (argv)
     char **argv;

{
  int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *);
  char **temp = (char **) alloca (nonopts_size);

  /* Interchange the two blocks of data in ARGV.  */

  bcopy (&argv[first_nonopt], temp, nonopts_size);
  bcopy (&argv[last_nonopt], &argv[first_nonopt],
   (optind - last_nonopt) * sizeof (char *));
  bcopy (temp, &argv[first_nonopt + optind - last_nonopt], nonopts_size);

  /* Update records for the slots the non-options now occupy.  */

  first_nonopt += (optind - last_nonopt);
  last_nonopt = optind;
}

/* Scan elements of ARGV (whose length is ARGC) for option characters
   given in OPTSTRING.

   If an element of ARGV starts with '-', and is not exactly "-" or "--",
   then it is an option element.  The characters of this element
   (aside from the initial '-') are option characters.  If `getopt'
   is called repeatedly, it returns successively each of the option characters
   from each of the option elements.

   If `getopt' finds another option character, it returns that character,
   updating `optind' and `nextchar' so that the next call to `getopt' can
   resume the scan with the following option character or ARGV-element.

   If there are no more option characters, `getopt' returns `EOF'.
   Then `optind' is the index in ARGV of the first ARGV-element
   that is not an option.  (The ARGV-elements have been permuted
   so that those that are not options now come last.)

   OPTSTRING is a string containing the legitimate option characters.
   If an option character is seen that is not listed in OPTSTRING,
   return '?' 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
   otherwise.  */

int
getopt (argc, argv, optstring)
     int argc;
char **argv;
CONST char *optstring;

{
  optarg = 0;

  /* Initialize the internal data when the first call is made.
     Start processing options with ARGV-element 1 (since ARGV-element 0
     is the program name); the sequence of previously skipped
     non-option ARGV-elements is empty.  */

  if (optind == 0)
  {
    first_nonopt = last_nonopt = optind = 1;

    nextchar = 0;

      /* 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 (getenv ("_POSIX_OPTION_ORDER") != 0)
      ordering = REQUIRE_ORDER;
    else
      ordering = PERMUTE;
  }

  if (nextchar == NULL || *nextchar == 0)
  {
    if (ordering == PERMUTE)
    {
    /* If we have just processed some options following some non-options,
       exchange them so that the options come first.  */
      if (first_nonopt != last_nonopt && last_nonopt != optind)
        exchange (argv);
      else if (last_nonopt != optind)
        first_nonopt = optind;

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

      while (optind < argc
       && (argv[optind][0] != '-'
           || argv[optind][1] == 0)
       && (_getopt_long_options == 0
           || argv[optind][0] != '+'
           || argv[optind][1] == 0))
        optind++;
      last_nonopt = optind;
    }

      /* Special ARGV-element `--' means premature end of options.
   Skip it like a null option,
   then exchange with previous non-options as if it were an option,
   then skip everything else like a non-option.  */

    if (optind != argc && !strcmp (argv[optind], "--"))
    {
      optind++;

      if (first_nonopt != last_nonopt && last_nonopt != optind)
        exchange (argv);
      else if (first_nonopt == last_nonopt)
        first_nonopt = optind;
      last_nonopt = argc;

      optind = argc;
    }

      /* If we have done all the ARGV-elements, stop the scan
   and back over any non-options that we skipped and permuted.  */

    if (optind == argc)
    {
    /* Set the next-arg-index to point at the non-options
       that we previously skipped, so the caller will digest them.  */
      if (first_nonopt != last_nonopt)
        optind = first_nonopt;
      return EOF;
    }

      /* If we have come to a non-option and did not permute it,
   either stop the scan or describe it to the caller and pass it by.  */

    if ((argv[optind][0] != '-' || argv[optind][1] == 0)
  && (_getopt_long_options == 0
      || argv[optind][0] != '+' || argv[optind][1] == 0))
    {
      if (ordering == REQUIRE_ORDER)
        return EOF;
      optarg = argv[optind++];
      return 1;
    }

      /* We have found another option-ARGV-element.
   Start decoding its characters.  */

    nextchar = argv[optind] + 1;
  }

  if (_getopt_long_options != 0
      && (argv[optind][0] == '+'
    || (_getopt_long_only && argv[optind][0] == '-'))
    )
  {
    CONST struct option *p;
    char *s = nextchar;
    int exact = 0;
    int ambig = 0;
    CONST struct option *pfound = NULL;
    int indfound;

    while (*s && *s != '=')
      s++;

      /* Test all options for either exact match or abbreviated matches.  */
    for (p = _getopt_long_options, option_index = 0; p->name;
   p++, option_index++)
      if (!strncmp (p->name, nextchar, s - nextchar))
      {
        if (s - nextchar == strlen (p->name))
        {
    /* Exact match found.  */
          pfound = p;
          indfound = option_index;
          exact = 1;
          break;
        }
        else if (pfound == NULL)
        {
    /* First nonexact match found.  */
          pfound = p;
          indfound = option_index;
        }
        else
        /* Second nonexact match found.  */
          ambig = 1;
      }

    if (ambig && !exact)
    {
      fprintf (stderr, "%s: option `%s' is ambiguous\n",
         argv[0], argv[optind]);
      nextchar += strlen (nextchar);
      optind++;
      return '?';
    }

    if (pfound != NULL)
    {
      option_index = indfound;
      optind++;
      if (*s)
      {
        if (pfound->has_arg > 0)
          optarg = s + 1;
        else
        {
          fprintf (stderr,
             "%s: option `%c%s' doesn't allow an argument\n",
             argv[0], argv[optind - 1][0], pfound->name);
          nextchar += strlen (nextchar);
          return '?';
        }
      }
      else if (pfound->has_arg == 1)
      {
        if (optind < argc)
          optarg = argv[optind++];
        else
        {
          fprintf (stderr, "%s: option `%s' requires an argument\n",
             argv[0], argv[optind - 1]);
          nextchar += strlen (nextchar);
          return '?';
        }
      }
      nextchar += strlen (nextchar);
      if (pfound->flag)
      {
        *(pfound->flag) = pfound->val;
        return 0;
      }
      return pfound->val;
    }
      /* Can't find it as a long option.  If this is getopt_long_only,
   and the option starts with '-' and is a valid short
   option, then interpret it as a short option.  Otherwise it's
   an error.  */
    if (_getopt_long_only == 0 || argv[optind][0] == '+' ||
  index (optstring, *nextchar) == NULL)
    {
      if (opterr != 0)
        fprintf (stderr, "%s: unrecognized option `%c%s'\n",
           argv[0], argv[optind][0], nextchar);
      nextchar += strlen (nextchar);
      optind++;
      return '?';
    }
  }

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

  {
    char c = *nextchar++;
    char *temp = index (optstring, c);

    /* Increment `optind' when we start to process its last character.  */
    if (*nextchar == 0)
      optind++;

    if (temp == 0 || c == ':')
    {
      if (opterr != 0)
      {
        if (c < 040 || c >= 0177)
          fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
             argv[0], c);
        else
          fprintf (stderr, "%s: unrecognized option `-%c'\n",
             argv[0], c);
      }
      return '?';
    }
    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 != 0)
            fprintf (stderr, "%s: option `-%c' requires an argument\n",
               argv[0], c);
          c = '?';
        }
        else
        /* We already incremented `optind' once;
     increment it again when taking next ARGV-elt as argument.  */
          optarg = argv[optind++];
        nextchar = 0;
      }
    }
    return c;
  }
}

/* Getopt for GNU.
   Copyright (C) 1987, 1989 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 1, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */


#ifdef __STDC__
#define CONST const
#else
#define CONST
#endif

#if !defined (NULL)
#define NULL ((void *)0)
#endif

int
getopt_long (argc, argv, options, long_options, opt_index)
int argc;
char **argv;
CONST char *options;
CONST struct option *long_options;
int *opt_index;

{
  int val;

  _getopt_long_options = long_options;

  val = getopt (argc, argv, options);
  if (val == 0 && opt_index != NULL)
    *opt_index = option_index;
  return val;
}

/* Like getopt_long, but '-' as well as '+' can indicate a long option.
   If an option that starts with '-' doesn't match a long option,
   but does match a short option, it is parsed as a short option
   instead. */

int
getopt_long_only (argc, argv, options, long_options, opt_index)
     int argc;
char **argv;
CONST char *options;
CONST struct option *long_options;
int *opt_index;

{
  int val;

  _getopt_long_options = long_options;
  _getopt_long_only = 1;
  val = getopt (argc, argv, options);
  if (val == 0 && opt_index != NULL)
    *opt_index = option_index;
  return val;
}


/* argmatch.c -- find a match for a string in an array
   Copyright (C) 1990 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 1, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* Written by David MacKenzie <[e-mail]> */


extern char *program_name;

/* If ARG is an unambiguous match for an element of the
   null-terminated array OPTLIST, return the index in OPTLIST
   of the matched element, else -1 if it does not match any element
   or -2 if it is ambiguous (is a prefix of more than one element). */

int
argmatch (arg, optlist)
     char *arg;
char **optlist;

{
  int i;      /* Temporary index in OPTLIST. */
  int arglen;     /* Length of ARG. */
  int matchind = -1;    /* Index of first nonexact match. */
  int ambiguous = 0;    /* If nonzero, multiple nonexact match(es). */

  arglen = strlen (arg);
  
  /* Test all elements for either exact match or abbreviated matches.  */
  for (i = 0; optlist[i]; i++)
  {
    if (!strncmp (optlist[i], arg, arglen))
    {
      if (strlen (optlist[i]) == arglen)
      /* Exact match found.  */
        return i;
      else if (matchind == -1)
      /* First nonexact match found.  */
        matchind = i;
      else
      /* Second nonexact match found.  */
        ambiguous = 1;
    }
  }
  if (ambiguous)
    return -2;
  else
    return matchind;
}

/* Error reporting for argmatch.
   KIND is a description of the type of entity that was being matched.
   VALUE is the invalid value that was given.
   PROBLEM is the return value from argmatch. */

void
invalid_arg (kind, value, problem)
     char *kind;
char *value;
int problem;

{
  fprintf (stderr, "%s: ", program_name);
  if (problem == -1)
    fprintf (stderr, "invalid");
  else        /* Assume -2. */
    fprintf (stderr, "ambiguous");
  fprintf (stderr, " %s `%s'\n", kind, value);
}
/* File-name wildcard pattern matching for GNU.
   Copyright (C) 1985, 1988, 1989, 1990 Free Software Foundation, Inc.

   Thi