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git.ipfire.org Git - thirdparty/squid.git/blob - lib/getopt.c
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40 #if defined(LIBC_SCCS) && !defined(lint)
41 static char sccsid
[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
42 #endif /* LIBC_SCCS and not lint */
47 int opterr
= 1, /* if error message should be printed */
48 optind
= 1, /* index into parent argv vector */
49 optopt
, /* character checked for validity */
50 optreset
; /* reset getopt */
51 char *optarg
; /* argument associated with option */
53 #define BADCH (int)'?'
54 #define BADARG (int)':'
55 #define EMSG (char*)""
59 * Parse argc/argv argument vector.
62 getopt(nargc
, nargv
, ostr
)
67 static char *place
= EMSG
; /* option letter processing */
68 char *oli
; /* option letter list index */
70 if (optreset
|| !*place
) { /* update scanning pointer */
72 if (optind
>= nargc
|| *(place
= nargv
[optind
]) != '-') {
76 if (place
[1] && *++place
== '-') { /* found "--" */
81 } /* option letter okay? */
82 if ((optopt
= (int) *place
++) == (int) ':' ||
83 !(oli
= strchr(ostr
, optopt
))) {
85 * if the user didn't specify '-' as an option,
88 if (optopt
== (int) '-')
92 if (opterr
&& *ostr
!= ':')
93 (void) fprintf(stderr
,
94 "%s: illegal option -- %c\n", __FILE__
, optopt
);
97 if (*++oli
!= ':') { /* don't need argument */
101 } else { /* need an argument */
102 if (*place
) /* no white space */
104 else if (nargc
<= ++optind
) { /* no arg */
109 (void) fprintf(stderr
,
110 "%s: option requires an argument -- %c\n",
113 } else /* white space */
114 optarg
= nargv
[optind
];
118 return (optopt
); /* dump back option letter */