#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#include "libcob.h"
#include "cobgetopt.h"

Include dependency graph for cobgetopt.c:

Macros
#define	_(s) s

#define	N_(s) s

#define	COB_LIB_EXPIMP

#define	NONOPTION_P (argv[cob_optind][0] != '-' \|\| argv[cob_optind][1] == '\0')

Enumerations
enum	{ REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER }

Functions
static void	exchange (char **argv)

static const char *	_getopt_initialize (const char *optstring)

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

Variables
char *	cob_optarg = NULL

int	cob_optind = 1

static int	cob_getopt_initialized = 0

static char *	nextchar = NULL

int	cob_opterr = 1

int	cob_optopt = '?'

static enum { ... }	ordering

static int	first_nonopt

static int	last_nonopt

static int	seen_short = 0

Macro Definition Documentation

#define _ ( s ) s

#define COB_LIB_EXPIMP

#define N_ ( s ) s

#define NONOPTION_P (argv[cob_optind][0] != '-' || argv[cob_optind][1] == '\0')

Referenced by cob_getopt_long_long().

Enumeration Type Documentation

anonymous enum

Enumerator
REQUIRE_ORDER
PERMUTE
RETURN_IN_ORDER

             {
     REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
 } ordering;

Function Documentation

static const char* _getopt_initialize ( const char * optstring )

static

References cob_optind, first_nonopt, last_nonopt, nextchar, NULL, ordering, and PERMUTE.

Referenced by cob_getopt_long_long().

 {
   /* 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 = cob_optind;
 
   nextchar = NULL;
 
   /* Determine how to handle the ordering of options and nonoptions.  */
 
   if (optstring[0] == '-')
     {
       ++optstring;
     }
   else if (optstring[0] == '+')
     {
       ++optstring;
     }
   ordering = PERMUTE;
 
   return optstring;
 }

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

References _, _getopt_initialize(), cob_getopt_initialized, cob_optarg, cob_opterr, cob_optind, cob_optopt, exchange(), first_nonopt, option::flag, option::has_arg, last_nonopt, option::name, nextchar, NONOPTION_P, NULL, ordering, p, PERMUTE, REQUIRE_ORDER, seen_short, and option::val.

Referenced by cob_sys_getopt_long_long(), and process_command_line().

 {
   if (argc < 1)
     return -1;
 
   cob_optarg = NULL;
 
   if (cob_optind == 0 || !cob_getopt_initialized)
     {
       if (cob_optind == 0)
     cob_optind = 1; /* Don't scan ARGV[0], the program name.  */
       optstring = _getopt_initialize (optstring);
       cob_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.  */
 
   if (nextchar == NULL || *nextchar == '\0')
     {
       /* Advance to the next ARGV-element.  */
 
       seen_short = 0;
       /* 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 > cob_optind)
     last_nonopt = cob_optind;
       if (first_nonopt > cob_optind)
     first_nonopt = cob_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 != cob_optind)
         exchange ((char **) argv);
       else if (last_nonopt != cob_optind)
         first_nonopt = cob_optind;
 
       /* Skip any additional non-options
          and extend the range of non-options previously skipped.  */
 
       while (cob_optind < argc && NONOPTION_P)
         cob_optind++;
       last_nonopt = cob_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 (cob_optind != argc && !strcmp (argv[cob_optind], "--"))
     {
       cob_optind++;
 
       if (first_nonopt != last_nonopt && last_nonopt != cob_optind)
         exchange ((char **) argv);
       else if (first_nonopt == last_nonopt)
         first_nonopt = cob_optind;
       last_nonopt = argc;
 
       cob_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 (cob_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)
         cob_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;
       cob_optarg = argv[cob_optind++];
       return 1;
     }
 
       /* We have found another option-ARGV-element.
      Skip the initial punctuation.  */
 
       nextchar = (argv[cob_optind] + 1
           + (longopts != NULL && argv[cob_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[cob_optind][1] == '-'
       || (long_only && !seen_short && (argv[cob_optind][2] || !strchr (optstring, argv[cob_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, (size_t)(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;
           }
 #if 0   /* RXWRXW - ambig */
         else if (long_only
              || pfound->has_arg != p->has_arg
              || pfound->flag != p->flag
              || pfound->val != p->val)
 #else
         else
 #endif
           /* Second or later nonexact match found.  */
           ambig = 1;
       }
 
       if (ambig && !exact)
     {
       if (cob_opterr)
         {
           fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
                argv[0], argv[cob_optind]);
         }
       nextchar += strlen (nextchar);
       cob_optind++;
       cob_optopt = 0;
       return '?';
     }
 
       if (pfound != NULL)
     {
       option_index = indfound;
       cob_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)
         cob_optarg = nameend + 1;
           else
         {
           if (cob_opterr)
             {
               if (argv[cob_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[cob_optind - 1][0], pfound->name);
             }
             }
 
           nextchar += strlen (nextchar);
 
           cob_optopt = pfound->val;
           return '?';
         }
         }
       else if (pfound->has_arg == 1)
         {
           if (cob_optind < argc)
         cob_optarg = argv[cob_optind++];
           else
         {
           if (cob_opterr)
             {
               fprintf (stderr,
                    _("%s: option `%s' requires an argument\n"),
                    argv[0], argv[cob_optind - 1]);
             }
           nextchar += strlen (nextchar);
           cob_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[cob_optind][1] == '-'
       || strchr (optstring, *nextchar) == NULL)
     {
       if (cob_opterr)
         {
           if (argv[cob_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[cob_optind][0], nextchar);
         }
         }
       nextchar = (char *) "";
       cob_optind++;
       cob_optopt = 0;
       return '?';
     }
     }
 
   /* Look at and handle the next short option-character.  */
 
   {
     char c = *nextchar++;
     char *temp = strchr (optstring, c);
 
     /* Increment `cob_optind' when we start to process its last character.  */
     if (*nextchar == '\0')
     {
       ++cob_optind;
       seen_short = 0;
     }
 
     if (temp == NULL || c == ':')
       {
     if (cob_opterr)
       {
         fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
       }
     cob_optopt = c;
     seen_short = 0;
     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')
       {
         cob_optarg = nextchar;
         /* If we end this ARGV-element by taking the rest as an arg,
            we must advance to the next element now.  */
         cob_optind++;
       }
     else if (cob_optind == argc)
       {
         if (cob_opterr)
           {
         /* 1003.2 specifies the format of this message.  */
         fprintf (stderr, _("%s: option requires an argument -- %c\n"),
              argv[0], c);
           }
         cob_optopt = c;
         if (optstring[0] == ':')
           c = ':';
         else
           c = '?';
         seen_short = 0;
         return c;
       }
     else
       /* We already incremented `cob_optind' once;
          increment it again when taking next ARGV-elt as argument.  */
       cob_optarg = argv[cob_optind++];
 
     /* cob_optarg is now the argument, see if it's in the
        table of longopts.  */
 
     for (nextchar = nameend = cob_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, (size_t)(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 (cob_opterr)
           {
         fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
              argv[0], argv[cob_optind]);
           }
         nextchar += strlen (nextchar);
         cob_optind++;
         seen_short = 0;
         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)
           cob_optarg = nameend + 1;
         else
           {
             if (cob_opterr)
               {
             fprintf (stderr, _("\
 %s: option `-W %s' doesn't allow an argument\n"),
                  argv[0], pfound->name);
               }
 
             nextchar += strlen (nextchar);
             seen_short = 0;
             return '?';
           }
           }
         else if (pfound->has_arg == 1)
           {
         if (cob_optind < argc)
           cob_optarg = argv[cob_optind++];
         else
           {
             if (cob_opterr)
               {
             fprintf (stderr,
                  _("%s: option `%s' requires an argument\n"),
                  argv[0], argv[cob_optind - 1]);
               }
             nextchar += strlen (nextchar);
             seen_short = 0;
             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')
           {
         cob_optarg = nextchar;
         cob_optind++;
           }
         else
           cob_optarg = NULL;
         nextchar = NULL;
       }
     else
       {
         /* This is an option that requires an argument.  */
         if (*nextchar != '\0')
           {
         cob_optarg = nextchar;
         /* If we end this ARGV-element by taking the rest as an arg,
            we must advance to the next element now.  */
         cob_optind++;
           }
         else if (cob_optind == argc)
           {
         if (cob_opterr)
           {
             /* 1003.2 specifies the format of this message.  */
             fprintf (stderr,
                  _("%s: option requires an argument -- %c\n"),
                  argv[0], c);
           }
         cob_optopt = c;
         seen_short = 0;
         if (optstring[0] == ':')
           c = ':';
         else
           c = '?';
           }
         else
           /* We already incremented `cob_optind' once;
          increment it again when taking next ARGV-elt as argument.  */
           cob_optarg = argv[cob_optind++];
         nextchar = NULL;
       }
       }
     seen_short = 1;
     return c;
   }
 }

static void exchange ( char ** argv )

static

References cob_optind, first_nonopt, and last_nonopt.

Referenced by cob_getopt_long_long().

 {
   int   bottom = first_nonopt;
   int   middle = last_nonopt;
   int   top = cob_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.  */
 
   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;
 #if 0   /* RXWRXW - swap flags */
           SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
 #endif
         }
       /* 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;
 #if 0   /* RXWRXW - swap flags */
           SWAP_FLAGS (bottom + i, middle + i);
 #endif
         }
       /* Exclude the moved top segment from further swapping.  */
       bottom += len;
     }
     }
 
   /* Update records for the slots the non-options now occupy.  */
 
   first_nonopt += (cob_optind - last_nonopt);
   last_nonopt = cob_optind;
 }