ReactOS  0.4.14-dev-390-g34947ad
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 charNextOption (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 chargOptArg
 
const chargOptPlace = kGetoptErrMsg
 

Function Documentation

◆ Getopt()

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

Definition at line 42 of file getopt.c.

43 {
44  const char *oli; /* Option letter list index */
45 
46  if (!*gOptPlace) { /* update scanning pointer */
47  if (gOptInd >= nargc || *(gOptPlace = nargv[gOptInd]) != '-')
48  return (EOF);
49  if (gOptPlace[1] && *++gOptPlace == '-') { /* found "--" */
50  ++gOptInd;
51  return (EOF);
52  }
53  } /* Option letter okay? */
54  oli = NextOption(ostr);
55  if (oli == NULL) {
56  if (!*gOptPlace)
57  ++gOptInd;
58  if (gOptErr)
59  (void) fprintf(stderr, "%s%s%c\n", *nargv, ": illegal option -- ", gOptOpt);
60  return(kGetoptBadChar);
61  }
62  if (*++oli != ':') { /* don't need argument */
63  gOptArg = NULL;
64  if (!*gOptPlace)
65  ++gOptInd;
66  } else { /* need an argument */
67  if (*gOptPlace) /* no white space */
69  else if (nargc <= ++gOptInd) { /* no arg */
71  if (gOptErr)
72  (void) fprintf(stderr, "%s%s%c\n", *nargv, ": option requires an argument -- ", gOptOpt);
73  return(kGetoptBadChar);
74  } else /* white space */
75  gOptArg = nargv[gOptInd];
77  ++gOptInd;
78  }
79  return (gOptOpt); /* dump back Option letter */
80 } /* Getopt */
const char * gOptPlace
Definition: getopt.c:17
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
int gOptErr
Definition: getopt.c:13
const char * gOptArg
Definition: getopt.c:16
_Check_return_opt_ _CRTIMP int __cdecl fprintf(_Inout_ FILE *_File, _In_z_ _Printf_format_string_ const char *_Format,...)
smooth NULL
Definition: ftsmooth.c:416
int gOptOpt
Definition: getopt.c:15
#define kGetoptBadChar
Definition: getopt.h:8
#define kGetoptErrMsg
Definition: getopt.h:9
#define EOF
Definition: stdio.h:24
FILE * stderr
static char * NextOption(const char *const ostr)
Definition: getopt.c:31
int gOptInd
Definition: getopt.c:14

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.

22 {
23  gOptInd = 1;
25 } /* GetoptReset */
const char * gOptPlace
Definition: getopt.c:17
#define kGetoptErrMsg
Definition: getopt.h:9
int gOptInd
Definition: getopt.c:14

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.

32 {
33  if ((gOptOpt = (int) *gOptPlace++) == (int) ':')
34  return 0;
35  return strchr(ostr, gOptOpt);
36 } /* NextOption */
const char * gOptPlace
Definition: getopt.c:17
int gOptOpt
Definition: getopt.c:15
char * strchr(const char *String, int ch)
Definition: utclib.c:501

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

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

◆ 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().