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getopt.c File Reference
#include "c.h"
#include "pg_getopt.h"
Include dependency graph for getopt.c:

Go to the source code of this file.

Macros

#define BADCH   (int)'?'
 
#define BADARG   (int)':'
 
#define EMSG   ""
 

Functions

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

Variables

int opterr = 1
 
int optind = 1
 
int optopt
 
char * optarg
 

Macro Definition Documentation

◆ BADARG

#define BADARG   (int)':'

Definition at line 58 of file getopt.c.

◆ BADCH

#define BADCH   (int)'?'

Definition at line 57 of file getopt.c.

◆ EMSG

#define EMSG   ""

Definition at line 59 of file getopt.c.

Function Documentation

◆ getopt()

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

Definition at line 72 of file getopt.c.

73{
74 static char *place = EMSG; /* option letter processing */
75 char *oli; /* option letter list index */
76
77 if (!*place)
78 { /* update scanning pointer */
79 if (optind >= nargc || *(place = nargv[optind]) != '-')
80 {
81 place = EMSG;
82 return -1;
83 }
84 if (place[1] && *++place == '-' && place[1] == '\0')
85 { /* found "--" */
86 ++optind;
87 place = EMSG;
88 return -1;
89 }
90 } /* option letter okay? */
91 if ((optopt = (int) *place++) == (int) ':' ||
92 !(oli = strchr(ostr, optopt)))
93 {
94 /*
95 * if the user didn't specify '-' as an option, assume it means -1.
96 */
97 if (optopt == (int) '-')
98 {
99 place = EMSG;
100 return -1;
101 }
102 if (!*place)
103 ++optind;
104 if (opterr && *ostr != ':')
105 (void) fprintf(stderr,
106 "illegal option -- %c\n", optopt);
107 return BADCH;
108 }
109 if (*++oli != ':')
110 { /* don't need argument */
111 optarg = NULL;
112 if (!*place)
113 ++optind;
114 }
115 else
116 { /* need an argument */
117 if (*place) /* no white space */
118 optarg = place;
119 else if (nargc <= ++optind)
120 { /* no arg */
121 place = EMSG;
122 if (*ostr == ':')
123 return BADARG;
124 if (opterr)
125 (void) fprintf(stderr,
126 "option requires an argument -- %c\n",
127 optopt);
128 return BADCH;
129 }
130 else
131 /* white space */
132 optarg = nargv[optind];
133 place = EMSG;
134 ++optind;
135 }
136 return optopt; /* dump back option letter */
137}
#define fprintf(file, fmt, msg)
Definition: cubescan.l:21
#define BADCH
Definition: getopt.c:57
int optopt
Definition: getopt.c:52
#define BADARG
Definition: getopt.c:58
#define EMSG
Definition: getopt.c:59
int optind
Definition: getopt.c:51
char * optarg
Definition: getopt.c:53
int opterr
Definition: getopt.c:50

References BADARG, BADCH, EMSG, fprintf, optarg, opterr, optind, and optopt.

Referenced by BootstrapModeMain(), main(), PostmasterMain(), and process_postgres_switches().

Variable Documentation

◆ optarg

◆ opterr

int opterr = 1

Definition at line 50 of file getopt.c.

Referenced by getopt(), getopt_long(), PostmasterMain(), and process_postgres_switches().

◆ optind

◆ optopt

int optopt

Definition at line 52 of file getopt.c.

Referenced by getopt(), and getopt_long().