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Diffstat (limited to 'fdk-aac/win32/getopt.h')
| -rw-r--r-- | fdk-aac/win32/getopt.h | 904 |
1 files changed, 904 insertions, 0 deletions
diff --git a/fdk-aac/win32/getopt.h b/fdk-aac/win32/getopt.h new file mode 100644 index 0000000..7402521 --- /dev/null +++ b/fdk-aac/win32/getopt.h @@ -0,0 +1,904 @@ +#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__) */ |