//?Getopt.c
//?命令行解析函數(shù)的實現(xiàn)

#include?“getopt.h“

static?const?char*?ID?=?“$Id:?getopt.cv?1.2?2003/10/26?03:10:20?vindaci?Exp?$“;

char*?optarg?=?NULL;
int?optind?=?0;
int?opterr?=?1;
int?optopt?=?‘?‘;

static?char**?prev_argv?=?NULL;????????/*?Keep?a?copy?of?argv?and?argc?to?*/
static?int?prev_argc?=?0;??????????????/*????tell?if?getopt?params?change?*/
static?int?argv_index?=?0;?????????????/*?Option?we‘re?checking?*/
static?int?argv_index2?=?0;????????????/*?Option?argument?we‘re?checking?*/
static?int?opt_offset?=?0;?????????????/*?Index?into?compounded?“-option“?*/
static?int?dashdash?=?0;???????????????/*?True?if?“--“?option?reached?*/
static?int?nonopt?=?0;?????????????????/*?How?many?nonopts?we‘ve?found?*/

static?void?increment_index（）
{
	/*?Move?onto?the?next?option?*/
	if（argv_index?	{
		while（prev_argv[++argv_index]?&&?prev_argv[argv_index][0]?!=?‘-‘
			&&?argv_index?	}
	else
		argv_index++;
	opt_offset?=?1;
}


/*?Permutes?argv[]?so?that?the?argument?currently?being?processed?is?moved?to?the?end.?*/
static?int?permute_argv_once（）
{
	/*?Movability?check?*/
	if（argv_index?+?nonopt?>=?prev_argc）
		return?1;
	/*?Move?the?current?option?to?the?end?bring?the?others?to?front?*/
	else
	{
		char*?tmp?=?prev_argv[argv_index];

		/*?Move?the?data?*/
		memmove（&prev_argv[argv_index]?&prev_argv[argv_index+1]
			sizeof（char**）?*?（prev_argc?-?argv_index?-?1））;
		prev_argv[prev_argc?-?1]?=?tmp;

		nonopt++;
		return?0;
	}
}


/*?
optstr說明：
1.單個字符，表示選項；
2.單個字符后接一個冒號：表示該選項后必須跟一個參數(shù)，
參數(shù)緊跟在選項后或者以空格隔開，該參數(shù)的指針賦給optarg；
3.單個字符后跟兩個冒號，表示該選項后必須跟一個參數(shù)，
參數(shù)必須緊跟在選項后不能以空格隔開，該參數(shù)的指針賦給optarg。
*/
int?getopt（int?argc?char**?argv?char*?optstr）
{
	int?c?=?0;

	/*?If?we?have?new?argv?reinitialize?*/
	if（prev_argv?!=?argv?||?prev_argc?!=?argc）
	{
		/*?Initialize?variables?*/
		prev_argv?=?argv;
		prev_argc?=?argc;
		argv_index?=?1;
		argv_index2?=?1;
		opt_offset?=?1;
		dashdash?=?0;
		nonopt?=?0;
	}

	/*?Jump?point?in?case?we?want?to?ignore?the?current?argv_index?*/
getopt_top:

	/*?Misc.?initializations?*/
	optarg?=?NULL;

	/*?Dash-dash?check?*/
	if（argv[argv_index]?&&?!strcmp（argv[argv_index]?“--“））
	{
		dashdash?=?1;
		increment_index（）;
	}
	/*?If?we‘re?at?the?end?of?argv?that‘s?it.?*/
	if（argv[argv_index]?==?NULL）
	{
		c?=?-1;
	}
	/*?Are?we?looking?at?a?string??Single?dash?is?also?a?string?*/
	else?if（dashdash?||?argv[argv_index][0]?!=?‘-‘?||?!strcmp（argv[argv_index]?“-“））
	{
		/*?If?we?want?a?string...?*/
		if（optstr[0]?==?‘-‘）
		{
			c?=?1;
			optarg?=?argv[argv_index];
			increment_index（）;
		}
		/*?If?we?really?don‘t?want?it?（we‘re?in?POSIX?mode）?we‘re?done?*/
		else?if（optstr[0]?==?‘+‘?||?getenv（“POSIXLY_CORRECT“））
		{
			c?=?-1;

			/*?Everything?else?is?a?non-opt?argument?*/
			nonopt?=?argc?-?argv_index;
		}
		/*?If?we?mildly?don‘t?want?it?then?move?it?back?*/
		else
		{
			if（!permute_argv_once（））?goto?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-04-15?17:39??SingleObTrkPF\
?????目錄???????????0??2015-04-15?17:38??SingleObTrkPF\Debug\
?????文件???????76404??2014-12-13?17:38??SingleObTrkPF\Debug\CL.read.1.tlog
?????文件????????2912??2014-12-13?17:38??SingleObTrkPF\Debug\CL.write.1.tlog
?????文件???????11165??2014-12-13?17:38??SingleObTrkPF\Debug\Getopt.obj
?????文件???????38718??2014-12-13?17:38??SingleObTrkPF\Debug\Observation.obj
?????文件???????34859??2014-12-13?17:38??SingleObTrkPF\Debug\Particles.obj
?????文件???????46923??2014-12-13?17:38??SingleObTrkPF\Debug\SOTPF.obj
?????文件????????2578??2013-04-26?16:47??SingleObTrkPF\Debug\SingleObTrkPF.Build.CppClean.log
?????文件??????????81??2013-04-26?17:11??SingleObTrkPF\Debug\SingleObTrkPF.lastbuildstate
?????文件???????41117??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPF.log
?????文件????????2727??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.Build.CppClean.log
?????文件??????108544??2015-03-17?15:19??SingleObTrkPF\Debug\SingleObTrkPFMod.exe
?????文件?????????406??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.exe.embed.manifest
?????文件?????????472??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.exe.embed.manifest.res
?????文件?????????381??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.exe.intermediate.manifest
?????文件??????606824??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.ilk
?????文件??????????85??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.lastbuildstate
?????文件??????756736??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod.pdb
?????文件?????????222??2014-12-13?17:38??SingleObTrkPF\Debug\SingleObTrkPFMod_manifest.rc
?????文件???????71274??2014-12-13?17:38??SingleObTrkPF\Debug\Utils.obj
?????文件????????3296??2014-12-13?17:38??SingleObTrkPF\Debug\cl.command.1.tlog
?????目錄???????????0??2015-04-15?17:39??SingleObTrkPF\Debug\export\
?????文件?????1814315??2006-07-07?22:08??SingleObTrkPF\Debug\libgsl.dll
?????文件??????230190??2006-07-07?22:08??SingleObTrkPF\Debug\libgslcblas.dll
?????文件???????????2??2014-12-13?17:38??SingleObTrkPF\Debug\link-cvtres.read.1.tlog
?????文件???????????2??2014-12-13?17:38??SingleObTrkPF\Debug\link-cvtres.write.1.tlog
?????文件???????????2??2014-12-13?17:38??SingleObTrkPF\Debug\link.4540-cvtres.read.1.tlog
?????文件???????????2??2014-12-13?17:38??SingleObTrkPF\Debug\link.4540-cvtres.write.1.tlog
?????文件???????????2??2014-12-13?17:38??SingleObTrkPF\Debug\link.4540.read.1.tlog
?????文件???????????2??2014-12-13?17:38??SingleObTrkPF\Debug\link.4540.write.1.tlog
............此處省略32個文件信息