/*****
** ** Module Header ******************************************************* **
** **
** Modules Revision 3.0 **
** Providing a flexible user environment **
** **
** File: getopt.c **
** First Edition: 95/12/20 **
** **
** Authors: Jens Hamisch, jens@Strawberry.COM **
** **
** Description: getopt procedure for the Modules package **
** **
** Exports: getopt Recognition of commadn line options **
** **
** Notes: This is based on the 'Getopt for GNU' from the gcc-2.7.2 **
** compiler. It is preferred to the libc version, because it **
** provides 'long-options'. **
** **
** ************************************************************************ **
****/
/** **/
/** Getopt for GNU. **/
/** NOTE: getopt is now part of the C library, so if you don't know what **/
/** "Keep this file name-space clean" means, talk to roland"@gnu.ai.mit.edu **/
/** before changing it! **/
/** **/
/** Copyright( C) 1987, 88, 89, 90, 91, 92, 93, 94, 95 **/
/** 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 2, 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, 675 Mass Ave, Cambridge, MA 02139, USA. **/
/** **/
/** ************************************************************************ **/
/** ** Copyright *********************************************************** **
** **
** Copyright 1991-1994 by John L. Furlan. **
** see LICENSE.GPL, which must be provided, for details **
** **
** ************************************************************************ **/
static char Id[] = "@(#)$Id: getopt.c,v 1.2 2001/06/09 09:48:46 rkowen Exp $";
static void *UseId[] = { &UseId, Id };
/** ************************************************************************ **/
/** CONFIGURATION **/
/** ************************************************************************ **/
/**
** This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
** Ditto for AIX 3.2 and <stdlib.h>.
**/
#ifndef _NO_PROTO
# define _NO_PROTO
#endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/**
** This is a separate conditional since some stdc systems
** reject `defined( const)'.
**/
#if !defined( __STDC__) || !__STDC__
# ifndef const
# define const
# endif
#endif
/** ************************************************************************ **/
/** HEADERS **/
/** ************************************************************************ **/
#include <stdio.h>
/**
** Comment out all this code if we are using the GNU C Library, and are not
** actually compiling the library itself. This code is part of the GNU C
** Library, but also included in many other GNU distributions. Compiling
** and linking in this code is a waste when using the GNU C library
** ( especially if it is a shared library). Rather than having every GNU
** program understand `configure --with-gnu-libc' and omit the object files,
** it is simpler to just do this in the source for each such file.
**
** All this conditional nonsense has been commented out, because this
** version of getopt has some module specific error handling that gets
** tested during the check. It's a nice sentiment, but it doesn't buy
** you much to not include this code in.
**/
/**
** This needs to come after some library #include
** to get __GNU_LIBRARY__ defined.
**/
/* #if defined( _LIBC) || !defined (__GNU_LIBRARY__) */
/**
** Don't include stdlib.h for non-GNU C libraries because some of them
** contain conflicting prototypes for getopt.
**/
# ifdef __GNU_LIBRARY__
# include <stdlib.h>
# endif /* GNU C library. */
/**
** This is for other GNU distributions with internationalized messages.
** When compiling libc, the _ macro is predefined.
**/
# ifndef _
# ifdef HAVE_LIBINTL_H
# include <libintl.h>
# define _(msgid) gettext( msgid)
# else
# define _(msgid) (msgid)
# endif
# endif
/**
** This version of `getopt' appears to the caller like standard Unix `getopt'
** but it behaves differently for the user, since it allows the user
** to intersperse the options with the other arguments.
**
** As `getopt' works, it permutes the elements of ARGV so that,
** when it is done, all the options precede everything else. Thus
** all application programs are extended to handle flexible argument order.
**
** Setting the environment variable POSIXLY_CORRECT disables permutation.
** Then the behavior is completely standard.
**
** GNU application programs can use a third alternative mode in which
** they can distinguish the relative order of options and other arguments.
**/
# include "getopt.h"
/**
** 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.
**/
# ifdef __GNU_LIBRARY__
# include <string.h>
# define my_index strchr
# else
/**
** Avoid depending on library functions or files whose names are
** inconsistent.
**/
char *getenv();
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.
**
** Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
** That was relevant to code that was here before.
**/
# ifdef __GNUC__
# if !defined( __STDC__) || !__STDC__
/**
** 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__ */
/**
** Include the modules header in order to get all error messages
**/
#include "modules_def.h"
/** ************************************************************************ **/
/** LOCAL DATATYPES **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** CONSTANTS **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** MACROS **/
/** ************************************************************************ **/
/** not applicable **/
/** ************************************************************************ **/
/** GLOBAL DATA **/
/** ************************************************************************ **/
/**
** The following is required for compiling the TEST environment for the
** modules package
**/
#ifdef _MODULES_DEF_H
# ifdef TEST
char *g_current_module = "getopt";
int linenum = 0;
# endif
#endif /** _MODULES_DEF_H **/
/**
** 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.
**/
char *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 EOF, 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.
**/
/**
** XXX 1003.2 says this must be 1 before any call.
**/
int optind = 0;
/**
** Callers store zero here to inhibit the error message for unrecognized
** options.
**/
int 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.
**/
int optopt = '?';
/** ************************************************************************ **/
/** LOCAL DATA **/
/** ************************************************************************ **/
#ifdef _MODULES_DEF_H
/**
** Runtime information for the modules package
**/
static char module_name[] = "getopt.c"; /** File name of this module **/
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
static char _proc_exchange[] = "exchange";
static char _proc_getopt_initialize[] = "_getopt_initialize";
static char _proc_getopt_internal[] = " _getopt_internal";
static char _proc_getopt[] = "getopt";
static char _proc_getopt_long[] = "getopt_long";
static char _proc_getopt_long_only[] = "getopt_long_only";
# endif
#endif
# ifdef TEST
static char _proc_main[] = "main";
# endif
#endif /** _MODULES_DEF_H **/
/**
** 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 advan-
** cing to the next ARGV-element.
**/
static char *nextchar;
/**
** 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 EOF with `optind' != ARGC.
**/
static enum {
REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
} ordering;
/**
** Value of POSIXLY_CORRECT environment variable.
**/
static char *posixly_correct;
/**
** 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;
/** ************************************************************************ **/
/** PROTOTYPES **/
/** ************************************************************************ **/
static void exchange( char **argv);
static const char *_getopt_initialize( const char *optstring);
static int _getopt_internal( int argc,
char *const *argv,
const char *optstring,
const struct option *longopts,
int *longind,
int long_only);
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: exchange **
** **
** Description: 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. **
** **
** First Edition: 95/12/20 **
** **
** Parameters: char **argv Command line arguments **
** **
** Result: argv ARGV array with exchanged sequences **
** **
** Attached Globals: first_nonopt first and last non option argument **
** last_nonopt on the stream before and after the **
** change.( I/O parameter) **
** **
** ************************************************************************ **
++++*/
static void exchange( char **argv)
{
int bottom = first_nonopt;
int middle = last_nonopt;
int top = optind;
char *tem;
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_exchange, NULL);
# endif
#endif
/**
** 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;
}
/**
** 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;
}
/**
** Exclude the moved top segment from further swapping.
**/
bottom += len;
}
} /** while **/
/**
** Update records for the slots the non-options now occupy.
**/
first_nonopt +=( optind - last_nonopt);
last_nonopt = optind;
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_END, LOC, _proc_exchange, NULL);
# endif
#endif
} /** end of 'exchange' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: _getopt_initialize **
** **
** Description: Initialize the internal data when the first call is **
** made **
** This defines how to proceed if options and non-op- **
** tions are mixed up. See definition of the enum **
** 'ordering' for further explanation. **
** **
** First Edition: 95/12/20 **
** **
** Parameters: char *optstring Options string **
** **
** Result: argv ARGV array with exchanged sequences **
** **
** Attached globals: first_nonopt, First an las position of **
** last_nonopt non-option arguments **
** optind Option scan index **
** nextchar Next character to scan **
** posixly_correct Value of the environment **
** variable 'POSIXLY_CORRECT' **
** ordering Ordering method ... **
** **
** ************************************************************************ **
++++*/
static const char *_getopt_initialize( const char *optstring)
{
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_initialize, NULL);
# endif
#endif
/**
** Start processing options with ARGV-element 1( since ARGV-element 0
** is the program name); the sequence of previously skipped
** non-option ARGV-elements is empty.
**/
first_nonopt = last_nonopt = optind = 1;
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 _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_END, LOC, _proc_getopt_initialize, NULL);
# endif
#endif
return( optstring);
} /** End of '_getopt_initialize' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: _getopt_internal **
** **
** Description: Scan elements of ARGV( whose length is ARGC) for **
** option characters given in OPTSTRING. **
** or long-options specified in the longopt array **
** **
** First Edition: 95/12/20 **
** **
** Parameters: int argc, # of arguments **
** char **argv, ARGV array **
** char *optstring, String of valid **
** short options **
** struct option *longopts, Table of valid long **
** options **
** int *longind, Returns the index of **
** the found long opt. **
** int long_only Search long options **
** only **
** **
** Result: int '?' Parse error **
** 0 Long option w/o argument found **
** else short option that has been found **
** or the value of a long option **
** EOF no more arguments on ARGV **
** **
** Attached globals: optind Index of the current option in the **
** ARGV array **
** optarg Argument of an option with value **
** **
** ************************************************************************ **
++++*/
/** **/
/** 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 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)
{
optarg = NULL;
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_internal, NULL);
# endif
#endif
/**
** Initialization
**/
if( optind == 0) {
optstring = _getopt_initialize( optstring);
optind = 1; /** Don't scan ARGV[0], the program name. **/
}
if( nextchar == NULL || *nextchar == '\0') {
/**
** Advance to the next ARGV-element.
**/
if( ordering == PERMUTE) {
/**
** If we have just processed some options following some non-
** options, exchange them so that the options come first.
**/
if( first_nonopt != last_nonopt && last_nonopt != optind)
exchange( (char **) argv);
else if( last_nonopt != optind)
first_nonopt = optind;
/**
** Skip any additional non-options and extend the range of
** non-options previously skipped.
**/
while( optind < argc &&
( argv[optind][0] != '-' || argv[optind][1] == '\0'))
optind++;
last_nonopt = optind;
}
/**
** The special ARGV-element `--' means premature end of options.
** Skip it like a null option, then exchange with previous non-
** options ** as if it were an option, then skip everything else
** like a non-option.
**/
if( optind != argc && !strcmp( argv[optind], "--")) {
optind++;
if( first_nonopt != last_nonopt && last_nonopt != optind)
exchange((char **) argv);
else if( first_nonopt == last_nonopt)
first_nonopt = optind;
last_nonopt = argc;
optind = argc;
}
/**
** If we have done all the ARGV-elements, stop the scan and back
** over any non-options that we skipped and permuted.
**/
if( optind == argc) {
/**
** Set the next-arg-index to point at the non-options that we
** previously skipped, so the caller will digest them.
**/
if( first_nonopt != last_nonopt)
optind = first_nonopt;
return( 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') {
if( ordering == REQUIRE_ORDER)
return EOF;
optarg = argv[optind++];
return( 1);
}
/**
** We have found another option-ARGV-element.
** Skip the initial punctuation.
**/
nextchar =( argv[optind] + 1 +
( longopts != NULL && argv[optind][1] == '-'));
}
/**
** Decode the current option-ARGV-element.
**/
/**
** Check whether the ARGV-element is a long option.
**
** If long_only and the ARGV-element has the form "-f", where f is
** a valid short option, don't consider it an abbreviated form of
** a long option that starts with f. Otherwise there would be no
** way to give the -f short option.
**
** On the other hand, if there's a long option "fubar" and
** the ARGV-element is "-fu", do consider that an abbreviation of
** the long option, just like "--fu", and not "-f" with arg "u".
**
** This distinction seems to be the most useful approach.
**/
if( longopts != NULL &&( argv[optind][1] == '-' ||
( long_only &&
( argv[optind][2] || !my_index (optstring, argv[optind][1]))))) {
char *nameend;
const struct option *p;
const struct option *pfound = NULL;
int exact = 0;
int ambig = 0;
int indfound;
int option_index;
/**
** Skip the remaining characters of the long option upt to its
** names end( End of the option itsself or the '=' sign)
**/
for( nameend = nextchar; *nameend && *nameend != '='; nameend++);
/**
** 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( 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( !strncmp) **/
} /** for **/
/**
** Print an error message for ambigious abbreviations and exit
** on error
**/
if( ambig && !exact) {
if( opterr)
#ifdef _MODULES_DEF_H
ErrorLogger( ERR_OPT_AMBIG, LOC, argv[optind], NULL);
#else
fprintf( stderr, _("%s: option `%s' is ambiguous\n"),
argv[0], argv[optind]);
#endif
nextchar += strlen( nextchar);
optind++;
return( '?');
}
/**
** Longname found ?
**/
if( pfound != NULL) {
option_index = indfound;
optind++;
/**
** *nameend is != NULL if there is a value specified for
** the option: '--option=value' -> *nameend = '='
**/
if( *nameend) {
/**
** Don't test has_arg with >, because some C compilers don't
** allow it to be used on enums.
**/
if( pfound->has_arg)
optarg = nameend + 1;
else {
if( opterr)
/**
** ERROR: --option w/o argument
**/
if( argv[optind - 1][1] == '-')
#ifdef _MODULES_DEF_H
ErrorLogger( ERR_OPT_NOARG, LOC, pfound->name, NULL);
#else
fprintf( stderr,
_("%s: option `--%s' doesn't allow an argument\n"),
argv[0], pfound->name);
#endif
/**
** ERROR: +option or -option w/o argument
**/
else {
#ifdef _MODULES_DEF_H
char buffer[ BUFSIZ];
sprintf( buffer, "%c%s", argv[optind - 1][0], pfound->name);
ErrorLogger( ERR_OPT_NOARG, LOC, buffer, NULL);
#else
fprintf( stderr,
_("%s: option `%c%s' doesn't allow an argument\n"),
argv[0], argv[optind - 1][0], pfound->name);
#endif
}
nextchar += strlen( nextchar);
return( '?');
}
/**
** Options with arguments
**/
} else if( pfound->has_arg == 1) {
if( optind < argc)
optarg = argv[optind++];
else {
/**
** ERROR: Option without argument where one is required
**/
if( opterr)
#ifdef _MODULES_DEF_H
ErrorLogger( ERR_OPT_REQARG, LOC, argv[optind-1], NULL);
#else
fprintf( stderr,
_("%s: option `%s' requires an argument\n"),
argv[0], argv[optind - 1]);
#endif
nextchar += strlen( nextchar);
return((optstring[0] == ':') ? ':' : '?');
}
}
/**
** Return the indication, that a long vlaue has been found
** and set up pointers for the next option expansion
**/
nextchar += strlen( nextchar);
if( longind != NULL)
*longind = option_index;
if( pfound->flag) {
*(pfound->flag) = pfound->val;
return( 0);
}
return( pfound->val);
}
/**
** Can't find it as a long option. If this is not getopt_long_only,
** or the option starts with '--' or is not a valid short
** option, then it's an error.
** Otherwise interpret it as a short option.
**/
if( !long_only || argv[optind][1] == '-' ||
my_index( optstring, *nextchar) == NULL) {
if( opterr) {
/**
** ERROR: unrecognized --option
**/
if( argv[optind][1] == '-') {
#ifdef _MODULES_DEF_H
ErrorLogger( ERR_OPT_UNKNOWN, LOC, nextchar, NULL);
#else
fprintf( stderr, _("%s: unrecognized option `--%s'\n"),
argv[0], nextchar);
#endif
/**
** ERROR: unrecognized +option or -option
**/
} else {
#ifdef _MODULES_DEF_H
char buffer[ BUFSIZ];
sprintf( buffer, "%c%s", argv[optind][0], nextchar);
ErrorLogger( ERR_OPT_AMBIG, LOC, buffer, NULL);
#else
fprintf( stderr, _("%s: unrecognized option `%c%s'\n"),
argv[0], argv[optind][0], nextchar);
#endif
}
}
nextchar =( char *) "";
optind++;
return( '?');
}
} /** if( long option) **/
/**
** Look at and handle the next short option-character.
**/
{
char c = *nextchar++;
char *temp = my_index( optstring, c);
/**
** Increment `optind' when we start to process its last character.
**/
if( *nextchar == '\0')
++optind;
/**
** Unrecognized options
**/
if( temp == NULL || c == ':') {
if( opterr) {
#ifdef _MODULES_DEF_H
char buffer[ 2];
buffer[ 0] = c;
buffer[ 1] = '\0';
#endif
if( posixly_correct) {
/**
** 1003.2 specifies the format of this message.
**/
#ifdef _MODULES_DEF_H
ErrorLogger( ERR_OPT_ILL, LOC, buffer, NULL);
#else
fprintf( stderr, _("%s: illegal option -- %c\n"),
argv[0], c);
#endif
} else {
#ifdef _MODULES_DEF_H
ErrorLogger( ERR_OPT_INV, LOC, buffer, NULL);
#else
fprintf( stderr, _("%s: invalid option -- %c\n"),
argv[0], c);
#endif
}
}
optopt = 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 { /** optional argument **/
/**
** This is an option that requires an argument.
**/
if( *nextchar != '\0') {
optarg = nextchar;
/**
** If we end this ARGV-element by taking the rest as an arg,
** we must advance to the next element now.
**/
optind++;
} else if( optind == argc) {
if( opterr) {
/**
** 1003.2 specifies the format of this message. *
**/
#ifdef _MODULES_DEF_H
char buffer[ 2];
buffer[ 0] = c;
buffer[ 1] = '\0';
ErrorLogger( ERR_OPT_REQARG, LOC, buffer, NULL);
#else
fprintf( stderr,
_("%s: option requires an argument -- %c\n"),
argv[0], c);
#endif
}
optopt = c;
if( optstring[0] == ':')
c = ':';
else
c = '?';
} else
/**
** We already incremented `optind' once;
** increment it again when taking next ARGV-elt as argument.
**/
optarg = argv[optind++];
nextchar = NULL;
}
}
/**
** Now c contains the found character in case of success of '?' in case
** of failure
**/
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_END, LOC, _proc_getopt_internal, NULL);
# endif
#endif
return( c);
} /** block **/
} /** End of '_getopt_internal' **/
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: getopt, getopt_long, getopt_long_only **
** **
** Description: Calls _getopt_internal in order to provide a normal **
** getopt call. **
** **
** First Edition: 95/12/20 **
** **
** Parameters: int argc, # of arguments **
** char **argv, ARGV array **
** char *optstring, String of valid short opt. **
** **
** Result: int '?' Parse error **
** 0 Long option w/o argument found **
** else short option that has been found **
** or the value of a long option **
** EOF no more arguments on ARGV **
** **
** Attached globals: optind Index of the current option in the **
** ARGV array **
** optarg Argument of an option with value **
** opterr Set in case of parse errors **
** **
** ************************************************************************ **
++++*/
int getopt( int argc, char *const *argv, const char *optstring)
{
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_getopt, NULL);
# endif
#endif
return _getopt_internal( argc, argv, optstring,
( const struct option *) 0,
( int *) 0,
0);
} /** End of 'getopt' **/
int getopt_long( int argc, char *const *argv, const char *optstring,
const struct option *longopts, int *longind)
{
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_long, NULL);
# endif
#endif
return _getopt_internal( argc, argv, optstring, longopts, longind, 0);
} /** End of 'getopt' **/
int getopt_long_only( int argc, char *const *argv, const char *optstring,
const struct option *longopts, int *longind)
{
#ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_getopt_long_only, NULL);
# endif
#endif
return _getopt_internal( argc, argv, optstring, longopts, longind, 1);
} /** End of 'getopt' **/
/* #endif */ /* _LIBC or not __GNU_LIBRARY__. */
#ifdef TEST
/*++++
** ** Function-Header ***************************************************** **
** **
** Function: main **
** **
** Description: Test procedure for getopt **
** Compile with -DTEST to make an executable for use in **
** testing the above definition of `getopt' **
** **
** First Edition: 95/12/20 **
** **
** Parameters: int argc, # of arguments **
** char **argv, ARGV array **
** **
** Result: - **
** **
** ************************************************************************ **
++++*/
int main( int argc, char **argv)
{
# ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_START, LOC, _proc_main, NULL);
# endif
# endif
int c;
int digit_optind = 0;
int longind;
int option, verbose;
char *value;
const struct option longopts[] = {
{ "test", no_argument, NULL, 0 },
{ "option", optional_argument, &option, 1 },
{ "verbose", optional_argument, NULL, 'v' },
{ "value", required_argument, NULL, 'x'},
{ NULL, no_argument, NULL, 0 }
};
/**
** Print all options ...
**/
while( 1) {
int this_option_optind = optind ? optind : 1;
c = getopt_long( argc, argv, "abc:d:0123456789", longopts, &longind);
if( c == EOF)
break; /** while( 1) **/
switch( c) {
case 0:
printf( "option --test or --option\n");
if( optarg)
printf( "with argument '%s'", optarg);
printf( "\n option is set to %d\n", option);
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if( digit_optind != 0 && digit_optind != this_option_optind)
printf( "digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf( "option %c\n", c);
break;
case 'a':
printf( "option a\n");
break;
case 'b':
printf( "option b\n");
break;
case 'c':
printf( "option c with value `%s'\n", optarg);
break;
case 'v':
case 'x':
printf( "option %c ", c);
if( optarg)
printf( "with argument '%s'", optarg);
printf( "\n");
break;
case '?':
break;
default:
printf( "?? getopt returned character code 0%o ??\n", c);
}
} /** while( 1) **/
/**
** Finally print all remaining arguments
**/
if( optind < argc) {
printf( "non-option ARGV-elements: ");
while( optind < argc)
printf( "%s ", argv[optind++]);
printf( "\n");
}
/**
** Exit on success
**/
# ifdef _MODULES_DEF_H
# if WITH_DEBUGGING_INIT
ErrorLogger( NO_ERR_END, LOC, _proc_main, NULL);
# endif
# endif
exit( 0);
} /** End of 'main' **/
#endif /* TEST */
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