getopt.c File Reference

#include <stdio.h>
#include <string.h>
#include "getopt.h"

Include dependency graph for getopt.c:

Go to the source code of this file.

Functions
void	GetoptReset (void)
static char *	NextOption (const char *const ostr)
int	Getopt (int nargc, const char **const nargv, const char *const ostr)

Variables
int	gOptErr = 1
int	gOptInd = 1
int	gOptOpt
const char *	gOptArg
const char *	gOptPlace = kGetoptErrMsg

Function Documentation

Getopt()

int Getopt	(	int	nargc,
		const char **const	nargv,
		const char *const	ostr
	)

Definition at line 42 of file getopt.c.

{
    const char *oli;                   /* Option letter list index */
 
    if (!*gOptPlace) {                     /* update scanning pointer */
        if (gOptInd >= nargc || *(gOptPlace = nargv[gOptInd]) != '-')
            return (EOF);
        if (gOptPlace[1] && *++gOptPlace == '-') {  /* found "--" */
            ++gOptInd;
            return (EOF);
        }
    }                                  /* Option letter okay? */
    oli = NextOption(ostr);
    if (oli == NULL) {
        if (!*gOptPlace)
            ++gOptInd;
        if (gOptErr)
            (void) fprintf(stderr, "%s%s%c\n", *nargv, ": illegal option -- ", gOptOpt);
        return(kGetoptBadChar);
    }
    if (*++oli != ':') {               /* don't need argument */
        gOptArg = NULL;
        if (!*gOptPlace)
            ++gOptInd;
    } else {                           /* need an argument */
        if (*gOptPlace)                    /* no white space */
            gOptArg = gOptPlace;
        else if (nargc <= ++gOptInd) {  /* no arg */
            gOptPlace = kGetoptErrMsg;
            if (gOptErr)
                (void) fprintf(stderr, "%s%s%c\n", *nargv, ": option requires an argument -- ", gOptOpt);
            return(kGetoptBadChar);
        } else                         /* white space */
            gOptArg = nargv[gOptInd];
        gOptPlace = kGetoptErrMsg;
        ++gOptInd;
    }
    return (gOptOpt);                  /* dump back Option letter */
}                                      /* Getopt */

Referenced by DeleteCmd(), GetCmd(), LookupCmd(), main(), MkdirCmd(), MlsCmd(), OpenCmd(), PutCmd(), RmdirCmd(), SpoolGetCmd(), and SpoolPutCmd().

GetoptReset()

void GetoptReset

(

void

)

Definition at line 21 of file getopt.c.

{
    gOptInd = 1;
    gOptPlace = kGetoptErrMsg;
}   /* GetoptReset */

Referenced by DeleteCmd(), GetCmd(), LookupCmd(), main(), MkdirCmd(), MlsCmd(), OpenCmd(), PreInit(), PutCmd(), RmdirCmd(), SpoolGetCmd(), and SpoolPutCmd().

NextOption()

static char * NextOption ( const char *const  ostr )

static

Definition at line 31 of file getopt.c.

{
    if ((gOptOpt = (int) *gOptPlace++) == (int) ':')
        return 0;
    return strchr(ostr, gOptOpt);
}   /* NextOption */

Referenced by BlAppendBootOptions(), BlGetBootOptionListSize(), ChooseGinaUI(), Getopt(), IsConsoleBoot(), IsConsoleShell(), IsLiveCD(), MiscGetBootOption(), and NtLdrGetNextOption().

Variable Documentation

gOptArg

const char* gOptArg

Definition at line 16 of file getopt.c.

Referenced by Getopt(), main(), OpenCmd(), SpoolGetCmd(), and SpoolPutCmd().

gOptErr

int gOptErr = 1

Definition at line 13 of file getopt.c.

Referenced by Getopt().

gOptInd

int gOptInd = 1

Definition at line 14 of file getopt.c.

Referenced by DeleteCmd(), GetCmd(), Getopt(), GetoptReset(), LookupCmd(), main(), MkdirCmd(), MlsCmd(), OpenCmd(), PutCmd(), RmdirCmd(), SpoolGetCmd(), and SpoolPutCmd().

gOptOpt

int gOptOpt

Definition at line 15 of file getopt.c.

Referenced by Getopt(), and NextOption().

gOptPlace

const char* gOptPlace = kGetoptErrMsg

Definition at line 17 of file getopt.c.

Referenced by Getopt(), GetoptReset(), and NextOption().