getopt的windows版本
有谁写过getopt函数的windows版本，给我用一下，自己写还得占半天时间。。 vs2012?windows?c++
[解决办法]
/* 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, 1993
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. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifndef __STDC__
# ifndef const
# define const
# endif
#endif
/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */
#ifndef _NO_PROTO
#define _NO_PROTO
#endif
#include <stdio.h>
#include "tailor.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. */
#if defined (_LIBC)
[解决办法]
!defined (__GNU_LIBRARY__)
/* This needs to come after some library #include
to get __GNU_LIBRARY__ defined. */
#ifdef__GNU_LIBRARY__
/* Don't include stdlib.h for non-GNU C libraries because some of them
contain conflicting prototypes for getopt. */
#include <stdlib.h>
#endif/* GNU C library. */
/* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
long-named option. Because this is not POSIX.2 compliant, it is
being phased out. */
/* #define GETOPT_COMPAT */
/* 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"
#include<stdio.h>
#include<string.h>
#define EPR fprintf(stderr,
#define ERR(str, chr) if(opterr){EPR "%s%c\n", str, chr);}
int opterr = 1;
int optind = 1;
intoptopt;
char *optarg;
int
getopt (int argc, char *const argv[], const char *opts)
{
static int sp = 1;
int c;
char *cp;
if (sp == 1)
if (optind >= argc
[解决办法]
argv[optind][0] != '-'
[解决办法]
argv[optind][1] == '\0')
return -1;
else if (strcmp(argv[optind], "--") == 0) {
optind++;
return -1;
}
optopt = c = argv[optind][sp];
if (c == ':'
[解决办法]
(cp=strchr(opts, c)) == 0) {
ERR (": illegal option -- ", c);
if (argv[optind][++sp] == '\0') {
optind++;
sp = 1;
}
return '?';
}
if (*++cp == ':') {
if (argv[optind][sp+1] != '\0')
optarg = &argv[optind++][sp+1];
else if (++optind >= argc) {
ERR (": option requires an argument -- ", c);
sp = 1;
return '?';
} else
optarg = argv[optind++];
sp = 1;
} else {
if (argv[optind][++sp] == '\0') {
sp = 1;
optind++;
}
optarg = 0;
}
return c;
}
int main(int argc, char*argv[]){
int c;
while ((c = getopt(argc, argv, "MNOVv+I:D:U:F:lg")) != -1)
switch (c) {
case 'N':
break;
case 'I':
puts(optarg);
break;
case 'D':
case 'U':
puts(optarg);
break;
case 'M':
break;
case 'v':
break;
case 'V':
break;
case '+':
break;
default:
break;
}
return 0;
}
/*****************************************************************************
*
* MODULE NAME : GETOPT.C
*
* COPYRIGHTS:
* This module contains code made available by IBM
* Corporation on an AS IS basis. Any one receiving the
* module is considered to be licensed under IBM copyrights
* to use the IBM-provided source code in any way he or she
* deems fit, including copying it, compiling it, modifying
* it, and redistributing it, with or without
* modifications. No license under any IBM patents or
* patent applications is to be implied from this copyright
* license.
*
* A user of the module should understand that IBM cannot
* provide technical support for the module and will not be
* responsible for any consequences of use of the program.
*
* Any notices, including this one, are not to be removed
* from the module without the prior written consent of
* IBM.
*
* AUTHOR: Original author:
* G. R. Blair (BOBBLAIR at AUSVM1)
* Internet: bobblair@bobblair.austin.ibm.com
*
* Extensively revised by:
* John Q. Walker II, Ph.D. (JOHHQ at RALVM6)
* Internet: johnq@ralvm6.vnet.ibm.com
*
*****************************************************************************/
/******************************************************************************
* getopt()
*
* The getopt() function is a command line parser. It returns the next
* option character in argv that matches an option character in opstring.
*
* The argv argument points to an array of argc+1 elements containing argc
* pointers to character strings followed by a null pointer.
*
* The opstring argument points to a string of option characters; if an
* option character is followed by a colon, the option is expected to have
* an argument that may or may not be separated from it by white space.
* The external variable optarg is set to point to the start of the option
* argument on return from getopt().
*
* The getopt() function places in optind the argv index of the next argument
* to be processed. The system initializes the external variable optind to
* 1 before the first call to getopt().
*
* When all options have been processed (that is, up to the first nonoption
* argument), getopt() returns EOF. The special option "--" may be used to
* delimit the end of the options; EOF will be returned, and "--" will be
* skipped.
*
* The getopt() function returns a question mark (?) when it encounters an
* option character not included in opstring. This error message can be
* disabled by setting opterr to zero. Otherwise, it returns the option
* character that was detected.
*
* If the special option "--" is detected, or all options have been
* processed, EOF is returned.
*
* Options are marked by either a minus sign (-) or a slash (/).
*
* No errors are defined.
*****************************************************************************/
#include <stdio.h> /* for EOF */
#include <string.h> /* for strchr() */
/* static (global) variables that are specified as exported by getopt() */
char *optarg = NULL; /* pointer to the start of the option argument */
int optind = 1; /* number of the next argv[] to be evaluated */
int opterr = 1; /* non-zero if a question mark should be returned
when a non-valid option character is detected */
/* handle possible future character set concerns by putting this in a macro */
#define _next_char(string) (char)(*(string+1))
int getopt(int argc, char *argv[], char *opstring)
{
static char *pIndexPosition = NULL; /* place inside current argv string */
char *pArgString = NULL; /* where to start from next */
char *pOptString; /* the string in our program */
if (pIndexPosition != NULL) {
/* we last left off inside an argv string */
if (*(++pIndexPosition)) {
/* there is more to come in the most recent argv */
pArgString = pIndexPosition;
}
}
if (pArgString == NULL) {
/* we didn't leave off in the middle of an argv string */
if (optind >= argc) {
/* more command-line arguments than the argument count */
pIndexPosition = NULL; /* not in the middle of anything */
return EOF; /* used up all command-line arguments */
}
/*---------------------------------
* If the next argv[] is not an option, there can be no more options.
*-------------------------------*/
pArgString = argv[optind++]; /* set this to the next argument ptr */
if (('/' != *pArgString) && /* doesn't start with a slash or a dash? */
('-' != *pArgString)) {
--optind; /* point to current arg once we're done */
optarg = NULL; /* no argument follows the option */
pIndexPosition = NULL; /* not in the middle of anything */
return EOF; /* used up all the command-line flags */
}
/* check for special end-of-flags markers */
if ((strcmp(pArgString, "-") == 0)
[解决办法]
(strcmp(pArgString, "--") == 0)) {
optarg = NULL; /* no argument follows the option */
pIndexPosition = NULL; /* not in the middle of anything */
return EOF; /* encountered the special flag */
}
pArgString++; /* look past the / or - */
}
if (':' == *pArgString) { /* is it a colon? */
/*---------------------------------
* Rare case: if opterr is non-zero, return a question mark;
* otherwise, just return the colon we're on.
*-------------------------------*/
return (opterr ? (int)'?' : (int)':');
}
else if ((pOptString = strchr(opstring, *pArgString)) == 0) {
/*---------------------------------
* The letter on the command-line wasn't any good.
*-------------------------------*/
optarg = NULL; /* no argument follows the option */
pIndexPosition = NULL; /* not in the middle of anything */
return (opterr ? (int)'?' : (int)*pArgString);
}
else {
/*---------------------------------
* The letter on the command-line matches one we expect to see
*-------------------------------*/
if (':' == _next_char(pOptString)) { /* is the next letter a colon? */
/* It is a colon. Look for an argument string. */
if ('\0' != _next_char(pArgString)) { /* argument in this argv? */
optarg = &pArgString[1]; /* Yes, it is */
}
else {
/*-------------------------
* The argument string must be in the next argv.
* But, what if there is none (bad input from the user)?
* In that case, return the letter, and optarg as NULL.
*-----------------------*/
if (optind < argc)
optarg = argv[optind++];
else {
optarg = NULL;
return (opterr ? (int)'?' : (int)*pArgString);
}
}
pIndexPosition = NULL; /* not in the middle of anything */
}
else {
/* it's not a colon, so just return the letter */
optarg = NULL; /* no argument follows the option */
pIndexPosition = pArgString; /* point to the letter we're on */
}
return (int)*pArgString; /* return the letter that matched */
}
}
// Copyright Vladimir Prus 2002-2004.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt
// or copy at http://www.boost.org/LICENSE_1_0.txt)
/* The simplest usage of the library.
*/
#include <boost/program_options.hpp>
namespace po = boost::program_options;
#include <iostream>
#include <iterator>
using namespace std;
int main(int ac, char* av[])
{
try {
po::options_description desc("Allowed options");
desc.add_options()
("help", "produce help message")
("compression", po::value<double>(), "set compression level")
;
po::variables_map vm;
po::store(po::parse_command_line(ac, av, desc), vm);
po::notify(vm);
if (vm.count("help")) {
cout << desc << "\n";
return 0;
}
if (vm.count("compression")) {
cout << "Compression level was set to "
<< vm["compression"].as<double>() << ".\n";
} else {
cout << "Compression level was not set.\n";
}
}
catch(exception& e) {
cerr << "error: " << e.what() << "\n";
return 1;
}
catch(...) {
cerr << "Exception of unknown type!\n";
}
return 0;
}
