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-rw-r--r--fdk-aac/win32/getopt.h904
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diff --git a/fdk-aac/win32/getopt.h b/fdk-aac/win32/getopt.h
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+#ifndef __GETOPT_H__
+/**
+ * DISCLAIMER
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ *
+ * The mingw-w64 runtime package and its code is distributed in the hope that it
+ * will be useful but WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESSED OR
+ * IMPLIED ARE HEREBY DISCLAIMED. This includes but is not limited to
+ * warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+/*
+ * Implementation of the `getopt', `getopt_long' and `getopt_long_only'
+ * APIs, for inclusion in the MinGW runtime library.
+ *
+ * This file is part of the MinGW32 package set.
+ *
+ * Written by Keith Marshall <keithmarshall@users.sourceforge.net>
+ * Copyright (C) 2008, 2009, 2011, 2012, MinGW.org Project.
+ *
+ * ---------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, this permission notice, and the following
+ * disclaimer shall be included in all copies or substantial portions of
+ * the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * ---------------------------------------------------------------------------
+ *
+ */
+
+#define __GETOPT_H__
+
+/* All the headers include this file. */
+#include <crtdefs.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int optind; /* index of first non-option in argv */
+extern int optopt; /* single option character, as parsed */
+extern int opterr; /* flag to enable built-in diagnostics... */
+ /* (user may set to zero, to suppress) */
+
+extern char *optarg; /* pointer to argument of current option */
+
+/* Identify how to get the calling program name, for use in messages...
+ */
+#ifdef __CYGWIN__
+/*
+ * CYGWIN uses this DLL reference...
+ */
+# define PROGNAME __progname
+extern char __declspec(dllimport) *__progname;
+#else
+/*
+ * ...while elsewhere, we simply use the first argument passed.
+ */
+# define PROGNAME *argv
+#endif
+
+extern int getopt(int nargc, char * const *nargv, const char *options);
+
+#ifdef _BSD_SOURCE
+/*
+ * BSD adds the non-standard `optreset' feature, for reinitialisation
+ * of `getopt' parsing. We support this feature, for applications which
+ * proclaim their BSD heritage, before including this header; however,
+ * to maintain portability, developers are advised to avoid it.
+ */
+# define optreset __mingw_optreset
+extern int optreset;
+#endif
+#ifdef __cplusplus
+}
+#endif
+/*
+ * POSIX requires the `getopt' API to be specified in `unistd.h';
+ * thus, `unistd.h' includes this header. However, we do not want
+ * to expose the `getopt_long' or `getopt_long_only' APIs, when
+ * included in this manner. Thus, close the standard __GETOPT_H__
+ * declarations block, and open an additional __GETOPT_LONG_H__
+ * specific block, only when *not* __UNISTD_H_SOURCED__, in which
+ * to declare the extended API.
+ */
+#endif /* !defined(__GETOPT_H__) */
+
+#if !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__)
+#define __GETOPT_LONG_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct option /* specification for a long form option... */
+{
+ const char *name; /* option name, without leading hyphens */
+ int has_arg; /* does it take an argument? */
+ int *flag; /* where to save its status, or NULL */
+ int val; /* its associated status value */
+};
+
+enum /* permitted values for its `has_arg' field... */
+{
+ no_argument = 0, /* option never takes an argument */
+ required_argument, /* option always requires an argument */
+ optional_argument /* option may take an argument */
+};
+
+extern int getopt_long(int nargc, char * const *nargv, const char *options,
+ const struct option *long_options, int *idx);
+extern int getopt_long_only(int nargc, char * const *nargv, const char *options,
+ const struct option *long_options, int *idx);
+/*
+ * Previous MinGW implementation had...
+ */
+#ifndef HAVE_DECL_GETOPT
+/*
+ * ...for the long form API only; keep this for compatibility.
+ */
+# define HAVE_DECL_GETOPT 1
+#endif
+
+
+
+/* Identify how to get the calling program name, for use in messages...
+ */
+#ifdef __CYGWIN__
+/*
+ * CYGWIN uses this DLL reference...
+ */
+# define PROGNAME __progname
+extern char __declspec(dllimport) *__progname;
+#else
+/*
+ * ...while elsewhere, we simply use the first argument passed.
+ */
+# define PROGNAME *argv
+#endif
+
+/* Initialise the public variables. */
+
+int optind = 1; /* index for first non-option arg */
+int opterr = 1; /* enable built-in error messages */
+
+char *optarg = NULL; /* pointer to current option argument */
+
+#define CHAR char /* argument type selector */
+
+#define getopt_switchar '-' /* option prefix character in argv */
+#define getopt_pluschar '+' /* prefix for POSIX mode in optstring */
+#define getopt_takes_argument ':' /* marker for optarg in optstring */
+#define getopt_arg_assign '=' /* longopt argument field separator */
+#define getopt_unknown '?' /* return code for unmatched option */
+#define getopt_ordered 1 /* return code for ordered non-option */
+
+#define getopt_all_done -1 /* return code to indicate completion */
+
+enum
+{ /* All `getopt' API functions are implemented via calls to the
+ * common static function `getopt_parse()'; these `mode' selectors
+ * determine the behaviour of `getopt_parse()', to deliver the
+ * appropriate result in each case.
+ */
+ getopt_mode_standard = 0, /* getopt() */
+ getopt_mode_long, /* getopt_long() */
+ getopt_mode_long_only /* getopt_long_only() */
+};
+
+enum
+{ /* When attempting to match a command line argument to a long form option,
+ * these indicate the status of the match.
+ */
+ getopt_no_match = 0, /* no successful match */
+ getopt_abbreviated_match, /* argument is an abbreviation for an option */
+ getopt_exact_match /* argument matches the full option name */
+};
+
+int optopt = getopt_unknown; /* return value for option being evaluated */
+
+/* Some BSD applications expect to be able to reinitialise `getopt' parsing
+ * by setting a global variable called `optreset'. We provide an obfuscated
+ * API, which allows applications to emulate this brain damage; however, any
+ * use of this is non-portable, and is strongly discouraged.
+ */
+#define optreset __mingw_optreset
+int optreset = 0;
+
+static
+int getopt_missing_arg( const CHAR *optstring )
+{
+ /* Helper function to determine the appropriate return value,
+ * for the case where a required option argument is missing.
+ */
+ if( (*optstring == getopt_pluschar) || (*optstring == getopt_switchar) )
+ ++optstring;
+ return (*optstring == getopt_takes_argument)
+ ? getopt_takes_argument
+ : getopt_unknown;
+}
+
+/* `complain' macro facilitates the generation of simple built-in
+ * error messages, displayed on various fault conditions, provided
+ * `opterr' is non-zero.
+ */
+#define complain( MSG, ARG ) if( opterr ) \
+ fprintf( stderr, "%s: "MSG"\n", PROGNAME, ARG )
+
+static
+int getopt_argerror( int mode, char *fmt, CHAR *prog, struct option *opt, int retval )
+{
+ /* Helper function, to generate more complex built-in error
+ * messages, for invalid arguments to long form options ...
+ */
+ if( opterr )
+ {
+ /* ... but, displayed only if `opterr' is non-zero.
+ */
+ char flag[] = "--";
+ if( mode != getopt_mode_long )
+ /*
+ * only display one hyphen, for implicit long form options,
+ * improperly resolved by `getopt_long_only()'.
+ */
+ flag[1] = 0;
+ /*
+ * always preface the program name ...
+ */
+ fprintf( stderr, "%s: ", prog );
+ /*
+ * to the appropriate, option specific message.
+ */
+ fprintf( stderr, fmt, flag, opt->name );
+ }
+ /* Whether displaying the message, or not, always set `optopt'
+ * to identify the faulty option ...
+ */
+ optopt = opt->val;
+ /*
+ * and return the `invalid option' indicator.
+ */
+ return retval;
+}
+
+/* `getopt_conventions' establish behavioural options, to control
+ * the operation of `getopt_parse()', e.g. to select between POSIX
+ * and GNU style argument parsing behaviour.
+ */
+#define getopt_set_conventions 0x1000
+#define getopt_posixly_correct 0x0010
+
+static
+int getopt_conventions( int flags )
+{
+ static int conventions = 0;
+
+ if( (conventions == 0) && ((flags & getopt_set_conventions) == 0) )
+ {
+ /* default conventions have not yet been established;
+ * initialise them now!
+ */
+ conventions = getopt_set_conventions;
+ if( flags == getopt_pluschar )
+ conventions |= getopt_posixly_correct;
+ }
+
+ else if( flags & getopt_set_conventions )
+ /*
+ * default conventions may have already been established,
+ * but this is a specific request to augment them.
+ */
+ conventions |= flags;
+
+ /* in any event, return the currently established conventions.
+ */
+ return conventions;
+}
+
+static
+int is_switchar( CHAR flag )
+{
+ /* A simple helper function, used to identify the switch character
+ * introducing an optional command line argument.
+ */
+ return flag == getopt_switchar;
+}
+
+static
+const CHAR *getopt_match( CHAR lookup, const CHAR *opt_string )
+{
+ /* Helper function, used to identify short form options.
+ */
+ if( (*opt_string == getopt_pluschar) || (*opt_string == getopt_switchar) )
+ ++opt_string;
+ if( *opt_string == getopt_takes_argument )
+ ++opt_string;
+ do if( lookup == *opt_string ) return opt_string;
+ while( *++opt_string );
+ return NULL;
+}
+
+static
+int getopt_match_long( const CHAR *nextchar, const CHAR *optname )
+{
+ /* Helper function, used to identify potential matches for
+ * long form options.
+ */
+ CHAR matchchar;
+ while( (matchchar = *nextchar++) && (matchchar == *optname) )
+ /*
+ * skip over initial substring which DOES match.
+ */
+ ++optname;
+
+ if( matchchar )
+ {
+ /* did NOT match the entire argument to an initial substring
+ * of a defined option name ...
+ */
+ if( matchchar != getopt_arg_assign )
+ /*
+ * ... and didn't stop at an `=' internal field separator,
+ * so this is NOT a possible match.
+ */
+ return getopt_no_match;
+
+ /* DID stop at an `=' internal field separator,
+ * so this IS a possible match, and what follows is an
+ * argument to the possibly matched option.
+ */
+ optarg = (char *)(nextchar);
+ }
+ return *optname
+ /*
+ * if we DIDN'T match the ENTIRE text of the option name,
+ * then it's a possible abbreviated match ...
+ */
+ ? getopt_abbreviated_match
+ /*
+ * but if we DID match the entire option name,
+ * then it's a DEFINITE EXACT match.
+ */
+ : getopt_exact_match;
+}
+
+static
+int getopt_resolved( int mode, int argc, CHAR *const *argv, int *argind,
+struct option *opt, int index, int *retindex, const CHAR *optstring )
+{
+ /* Helper function to establish appropriate return conditions,
+ * on resolution of a long form option.
+ */
+ if( retindex != NULL )
+ *retindex = index;
+
+ /* On return, `optind' should normally refer to the argument, if any,
+ * which follows the current one; it is convenient to set this, before
+ * checking for the presence of any `optarg'.
+ */
+ optind = *argind + 1;
+
+ if( optarg && (opt[index].has_arg == no_argument) )
+ /*
+ * it is an error for the user to specify an option specific argument
+ * with an option which doesn't expect one!
+ */
+ return getopt_argerror( mode, "option `%s%s' doesn't accept an argument\n",
+ PROGNAME, opt + index, getopt_unknown );
+
+ else if( (optarg == NULL) && (opt[index].has_arg == required_argument) )
+ {
+ /* similarly, it is an error if no argument is specified
+ * with an option which requires one ...
+ */
+ if( optind < argc )
+ /*
+ * ... except that the requirement may be satisfied from
+ * the following command line argument, if any ...
+ */
+ optarg = argv[*argind = optind++];
+
+ else
+ /* so fail this case, only if no such argument exists!
+ */
+ return getopt_argerror( mode, "option `%s%s' requires an argument\n",
+ PROGNAME, opt + index, getopt_missing_arg( optstring ) );
+ }
+
+ /* when the caller has provided a return buffer ...
+ */
+ if( opt[index].flag != NULL )
+ {
+ /* ... then we place the proper return value there,
+ * and return a status code of zero ...
+ */
+ *(opt[index].flag) = opt[index].val;
+ return 0;
+ }
+ /* ... otherwise, the return value becomes the status code.
+ */
+ return opt[index].val;
+}
+
+static
+int getopt_verify( const CHAR *nextchar, const CHAR *optstring )
+{
+ /* Helper function, called by getopt_parse() when invoked
+ * by getopt_long_only(), to verify when an unmatched or an
+ * ambiguously matched long form option string is valid as
+ * a short form option specification.
+ */
+ if( ! (nextchar && *nextchar && optstring && *optstring) )
+ /*
+ * There are no characters to be matched, or there are no
+ * valid short form option characters to which they can be
+ * matched, so this can never be valid.
+ */
+ return 0;
+
+ while( *nextchar )
+ {
+ /* For each command line character in turn ...
+ */
+ const CHAR *test;
+ if( (test = getopt_match( *nextchar++, optstring )) == NULL )
+ /*
+ * ... there is no short form option to match the current
+ * candidate, so the entire argument fails.
+ */
+ return 0;
+
+ if( test[1] == getopt_takes_argument )
+ /*
+ * The current candidate is valid, and it matches an option
+ * which takes an argument, so this command line argument is
+ * a valid short form option specification; accept it.
+ */
+ return 1;
+ }
+ /* If we get to here, then every character in the command line
+ * argument was valid as a short form option; accept it.
+ */
+ return 1;
+}
+
+static
+#define getopt_std_args int argc, CHAR *const argv[], const CHAR *optstring
+int getopt_parse( int mode, getopt_std_args, ... )
+{
+ /* Common core implementation for ALL `getopt' functions.
+ */
+ static int argind = 0;
+ static int optbase = 0;
+ static const CHAR *nextchar = NULL;
+ static int optmark = 0;
+
+ if( (optreset |= (optind < 1)) || (optind < optbase) )
+ {
+ /* POSIX does not prescribe any definitive mechanism for restarting
+ * a `getopt' scan, but some applications may require such capability.
+ * We will support it, by allowing the caller to adjust the value of
+ * `optind' downwards, (nominally setting it to zero). Since POSIX
+ * wants `optind' to have an initial value of one, but we want all
+ * of our internal place holders to be initialised to zero, when we
+ * are called for the first time, we will handle such a reset by
+ * adjusting all of the internal place holders to one less than
+ * the adjusted `optind' value, (but never to less than zero).
+ */
+ if( optreset )
+ {
+ /* User has explicitly requested reinitialisation...
+ * We need to reset `optind' to it's normal initial value of 1,
+ * to avoid a potential infinitely recursive loop; by doing this
+ * up front, we also ensure that the remaining place holders
+ * will be correctly reinitialised to no less than zero.
+ */
+ optind = 1;
+
+ /* We also need to clear the `optreset' request...
+ */
+ optreset = 0;
+ }
+
+ /* Now, we may safely reinitialise the internal place holders, to
+ * one less than `optind', without fear of making them negative.
+ */
+ optmark = optbase = argind = optind - 1;
+ nextchar = NULL;
+ }
+
+ /* From a POSIX perspective, the following is `undefined behaviour';
+ * we implement it thus, for compatibility with GNU and BSD getopt.
+ */
+ else if( optind > (argind + 1) )
+ {
+ /* Some applications expect to be able to manipulate `optind',
+ * causing `getopt' to skip over one or more elements of `argv';
+ * POSIX doesn't require us to support this brain-damaged concept;
+ * (indeed, POSIX defines no particular behaviour, in the event of
+ * such usage, so it must be considered a bug for an application
+ * to rely on any particular outcome); nonetheless, Mac-OS-X and
+ * BSD actually provide *documented* support for this capability,
+ * so we ensure that our internal place holders keep track of
+ * external `optind' increments; (`argind' must lag by one).
+ */
+ argind = optind - 1;
+
+ /* When `optind' is misused, in this fashion, we also abandon any
+ * residual text in the argument we had been parsing; this is done
+ * without any further processing of such abandoned text, assuming
+ * that the caller is equipped to handle it appropriately.
+ */
+ nextchar = NULL;
+ }
+
+ if( nextchar && *nextchar )
+ {
+ /* we are parsing a standard, or short format, option argument ...
+ */
+ const CHAR *optchar;
+ if( (optchar = getopt_match( optopt = *nextchar++, optstring )) != NULL )
+ {
+ /* we have identified it as valid ...
+ */
+ if( optchar[1] == getopt_takes_argument )
+ {
+ /* and determined that it requires an associated argument ...
+ */
+ if( ! *(optarg = (char *)(nextchar)) )
+ {
+ /* the argument is NOT attached ...
+ */
+ if( optchar[2] == getopt_takes_argument )
+ /*
+ * but this GNU extension marks it as optional,
+ * so we don't provide one on this occasion.
+ */
+ optarg = NULL;
+
+ /* otherwise this option takes a mandatory argument,
+ * so, provided there is one available ...
+ */
+ else if( (argc - argind) > 1 )
+ /*
+ * we take the following command line argument,
+ * as the appropriate option argument.
+ */
+ optarg = argv[++argind];
+
+ /* but if no further argument is available,
+ * then there is nothing we can do, except for
+ * issuing the requisite diagnostic message.
+ */
+ else
+ {
+ complain( "option requires an argument -- %c", optopt );
+ return getopt_missing_arg( optstring );
+ }
+ }
+ optind = argind + 1;
+ nextchar = NULL;
+ }
+ else
+ optarg = NULL;
+ optind = (nextchar && *nextchar) ? argind : argind + 1;
+ return optopt;
+ }
+ /* if we didn't find a valid match for the specified option character,
+ * then we fall through to here, so take appropriate diagnostic action.
+ */
+ if( mode == getopt_mode_long_only )
+ {
+ complain( "unrecognised option `-%s'", --nextchar );
+ nextchar = NULL;
+ optopt = 0;
+ }
+ else
+ complain( "invalid option -- %c", optopt );
+ optind = (nextchar && *nextchar) ? argind : argind + 1;
+ return getopt_unknown;
+ }
+
+ if( optmark > optbase )
+ {
+ /* This can happen, in GNU parsing mode ONLY, when we have
+ * skipped over non-option arguments, and found a subsequent
+ * option argument; in this case we permute the arguments.
+ */
+ int index;
+ /*
+ * `optspan' specifies the number of contiguous arguments
+ * which are spanned by the current option, and so must be
+ * moved together during permutation.
+ */
+ const int optspan = argind - optmark + 1;
+ /*
+ * we use `this_arg' to store these temporarily.
+ */
+ CHAR **this_arg = malloc(sizeof(CHAR*) * optspan);
+ /*
+ * we cannot manipulate `argv' directly, since the `getopt'
+ * API prototypes it as `read-only'; this cast to `arglist'
+ * allows us to work around that restriction.
+ */
+ CHAR **arglist = (char **)(argv);
+
+ /* save temporary copies of the arguments which are associated
+ * with the current option ...
+ */
+ for( index = 0; index < optspan; ++index )
+ this_arg[index] = arglist[optmark + index];
+
+ /* move all preceding non-option arguments to the right,
+ * overwriting these saved arguments, while making space
+ * to replace them in their permuted location.
+ */
+ for( --optmark; optmark >= optbase; --optmark )
+ arglist[optmark + optspan] = arglist[optmark];
+
+ /* restore the temporarily saved option arguments to
+ * their permuted location.
+ */
+ for( index = 0; index < optspan; ++index )
+ arglist[optbase + index] = this_arg[index];
+
+ /* adjust `optbase', to account for the relocated option.
+ */
+ optbase += optspan;
+
+ free(this_arg);
+ }
+
+ else
+ /* no permutation occurred ...
+ * simply adjust `optbase' for all options parsed so far.
+ */
+ optbase = argind + 1;
+
+ /* enter main parsing loop ...
+ */
+ while( argc > ++argind )
+ {
+ /* inspect each argument in turn, identifying possible options ...
+ */
+ if( is_switchar( *(nextchar = argv[optmark = argind]) ) && *++nextchar )
+ {
+ /* we've found a candidate option argument ... */
+
+ if( is_switchar( *nextchar ) )
+ {
+ /* it's a double hyphen argument ... */
+
+ const CHAR *refchar = nextchar;
+ if( *++refchar )
+ {
+ /* and it looks like a long format option ...
+ * `getopt_long' mode must be active to accept it as such,
+ * `getopt_long_only' also qualifies, but we must downgrade
+ * it to force explicit handling as a long format option.
+ */
+ if( mode >= getopt_mode_long )
+ {
+ nextchar = refchar;
+ mode = getopt_mode_long;
+ }
+ }
+ else
+ {
+ /* this is an explicit `--' end of options marker, so wrap up now!
+ */
+ if( optmark > optbase )
+ {
+ /* permuting the argument list as necessary ...
+ * (note use of `this_arg' and `arglist', as above).
+ */
+ CHAR *this_arg = argv[optmark];
+ CHAR **arglist = (CHAR **)(argv);
+
+ /* move all preceding non-option arguments to the right ...
+ */
+ do arglist[optmark] = arglist[optmark - 1];
+ while( optmark-- > optbase );
+
+ /* reinstate the `--' marker, in its permuted location.
+ */
+ arglist[optbase] = this_arg;
+ }
+ /* ... before finally bumping `optbase' past the `--' marker,
+ * and returning the `all done' completion indicator.
+ */
+ optind = ++optbase;
+ return getopt_all_done;
+ }
+ }
+ else if( mode < getopt_mode_long_only )
+ {
+ /* it's not an explicit long option, and `getopt_long_only' isn't active,
+ * so we must explicitly try to match it as a short option.
+ */
+ mode = getopt_mode_standard;
+ }
+
+ if( mode >= getopt_mode_long )
+ {
+ /* the current argument is a long form option, (either explicitly,
+ * introduced by a double hyphen, or implicitly because we were called
+ * by `getopt_long_only'); this is where we parse it.
+ */
+ int lookup;
+ int matched = -1;
+
+ /* we need to fetch the `extra' function arguments, which are
+ * specified for the `getopt_long' APIs.
+ */
+ va_list refptr;
+ struct option *longopts;
+ int *optindex;
+ va_start( refptr, optstring );
+ longopts = va_arg( refptr, struct option * );
+ optindex = va_arg( refptr, int * );
+ va_end( refptr );
+
+ /* ensuring that `optarg' does not inherit any junk, from parsing
+ * preceding arguments ...
+ */
+ optarg = NULL;
+ for( lookup = 0; longopts && longopts[lookup].name; ++lookup )
+ {
+ /* scan the list of defined long form options ...
+ */
+ switch( getopt_match_long( nextchar, longopts[lookup].name ) )
+ {
+ /* looking for possible matches for the current argument.
+ */
+ case getopt_exact_match:
+ /*
+ * when an exact match is found,
+ * return it immediately, setting `nextchar' to NULL,
+ * to ensure we don't mistakenly try to match any
+ * subsequent characters as short form options.
+ */
+ nextchar = NULL;
+ return getopt_resolved( mode, argc, argv, &argind,
+ longopts, lookup, optindex, optstring );
+
+ case getopt_abbreviated_match:
+ /*
+ * but, for a partial (initial substring) match ...
+ */
+ if( matched >= 0 )
+ {
+ /* if this is not the first, then we have an ambiguity ...
+ */
+ if( (mode == getopt_mode_long_only)
+ /*
+ * However, in the case of getopt_long_only(), if
+ * the entire ambiguously matched string represents
+ * a valid short option specification, then we may
+ * proceed to interpret it as such.
+ */
+ && getopt_verify( nextchar, optstring ) )
+ return getopt_parse( mode, argc, argv, optstring );
+
+ /* If we get to here, then the ambiguously matched
+ * partial long option isn't valid for short option
+ * evaluation; reset parser context to resume with
+ * the following command line argument, diagnose
+ * ambiguity, and bail out.
+ */
+ optopt = 0;
+ nextchar = NULL;
+ optind = argind + 1;
+ complain( "option `%s' is ambiguous", argv[argind] );
+ return getopt_unknown;
+ }
+ /* otherwise just note that we've found a possible match ...
+ */
+ matched = lookup;
+ }
+ }
+ if( matched >= 0 )
+ {
+ /* if we get to here, then we found exactly one partial match,
+ * so return it, as for an exact match.
+ */
+ nextchar = NULL;
+ return getopt_resolved( mode, argc, argv, &argind,
+ longopts, matched, optindex, optstring );
+ }
+ /* if here, then we had what SHOULD have been a long form option,
+ * but it is unmatched ...
+ */
+ if( (mode < getopt_mode_long_only)
+ /*
+ * ... although paradoxically, `mode == getopt_mode_long_only'
+ * allows us to still try to match it as a short form option.
+ */
+ || (getopt_verify( nextchar, optstring ) == 0) )
+ {
+ /* When it cannot be matched, reset the parsing context to
+ * resume from the next argument, diagnose the failed match,
+ * and bail out.
+ */
+ optopt = 0;
+ nextchar = NULL;
+ optind = argind + 1;
+ complain( "unrecognised option `%s'", argv[argind] );
+ return getopt_unknown;
+ }
+ }
+ /* fall through to handle standard short form options...
+ * when the option argument format is neither explictly identified
+ * as long, nor implicitly matched as such, and the argument isn't
+ * just a bare hyphen, (which isn't an option), then we make one
+ * recursive call to explicitly interpret it as short format.
+ */
+ if( *nextchar )
+ return getopt_parse( mode, argc, argv, optstring );
+ }
+ /* if we get to here, then we've parsed a non-option argument ...
+ * in GNU compatibility mode, we step over it, so we can permute
+ * any subsequent option arguments, but ...
+ */
+ if( *optstring == getopt_switchar )
+ {
+ /* if `optstring' begins with a `-' character, this special
+ * GNU specific behaviour requires us to return the non-option
+ * arguments in strict order, as pseudo-arguments to a special
+ * option, with return value defined as `getopt_ordered'.
+ */
+ nextchar = NULL;
+ optind = argind + 1;
+ optarg = argv[argind];
+ return getopt_ordered;
+ }
+ if( getopt_conventions( *optstring ) & getopt_posixly_correct )
+ /*
+ * otherwise ...
+ * for POSIXLY_CORRECT behaviour, or if `optstring' begins with
+ * a `+' character, then we break out of the parsing loop, so that
+ * the scan ends at the current argument, with no permutation.
+ */
+ break;
+ }
+ /* fall through when all arguments have been evaluated,
+ */
+ optind = optbase;
+ return getopt_all_done;
+}
+
+/* All three public API entry points are trivially defined,
+ * in terms of the internal `getopt_parse' function.
+ */
+int getopt( getopt_std_args )
+{
+ return getopt_parse( getopt_mode_standard, argc, argv, optstring );
+}
+
+int getopt_long( getopt_std_args, const struct option *opts, int *index )
+{
+ return getopt_parse( getopt_mode_long, argc, argv, optstring, opts, index );
+}
+
+int getopt_long_only( getopt_std_args, const struct option *opts, int *index )
+{
+ return getopt_parse( getopt_mode_long_only, argc, argv, optstring, opts, index );
+}
+
+#ifdef __weak_alias
+/*
+ * These Microsnot style uglified aliases are provided for compatibility
+ * with the previous MinGW implementation of the getopt API.
+ */
+__weak_alias( getopt, _getopt )
+__weak_alias( getopt_long, _getopt_long )
+__weak_alias( getopt_long_only, _getopt_long_only )
+#endif
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__) */