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.\" Copyright (C) 2007 Michael Kerrisk <mtk.manpages@gmail.com>
.\" and Copyright (C) 2007 Justin Pryzby <pryzbyj@justinpryzby.com>
.\"
.\" Permission is hereby granted, free of charge, to any person obtaining
.\" a copy of this software and associated documentation files (the
.\" "Software"), to deal in the Software without restriction, including
.\" without limitation the rights to use, copy, modify, merge, publish,
.\" distribute, sublicense, and/or sell copies of the Software, and to
.\" permit persons to whom the Software is furnished to do so, subject to
.\" the following conditions:
.\"
.\" The above copyright notice and this permission notice shall be
.\" included in all copies or substantial portions of the Software.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
.\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
.\" IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
.\" CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
.\" TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
.\" SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
.\"
.\" Japanese Version Copyright (c) 2007 Akihiro MOTOKI
.\" all rights reserved.
.\" Translated 2007-06-02, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.TH GETSUBOPT 3 2008-05-29 "GNU" "Linux Programmer's Manual"
.SH ̾
getsubopt \- ʸΥ֥ץβԤ
.SH
.B #define _XOPEN_SOURCE 500
.br
.B #include <stdlib.h>
.BI "int getsubopt(char **"optionp ", char * const *" tokens \
", char **" valuep );
.SH
.BR getsubopt ()
ϡ
.I optionp
Ϳ줿ڤΥ֥ץꥹȤϤ롣
(Τ褦ʥ֥ץꥹȤ
.BR getopt (3)
Ȥäƥޥɥ饤ᤷ˸뤳Ȥ¿
㤨С
.BR mount (8)
\fI-o\fP ץȤ褤)
줾Υ֥ץˤбͤꤹ뤳ȤǤ롣
֥ץ̾бͤ (\(aq=\(aq) Ƕڤ롣
㤨СʲΤ褦ʸ
.I optionp
ϤȤǤ롣
.sp
.in +4n
.B ro,name=xyz
.in
.I tokens
ϥȡΥꥹȤؤΥݥǡꥹȤ NULL ǽü롣
.BR getsubopt ()
ϤΥȡ
.I optionp
õ
줾ΥȡϡNULL ü줿 1ʸʾʸǡ
¾Υȡȶ̤Ǥɬפ롣
ޤȥޤޤǤϤʤʤ
.BR getsubopt ()
ϸƤӽФ뤿Ӥˡ
.I optionp
μ̤Υ֥ץξ֤
֥ץ椬ä硢ǽ
Υ֥ץ̾ͤζڤȲᤵ롣
ڤ꤫鼡Υ (ǸΥ֥ץξ硢ʸ)
ޤǤ֥ץͤȤʤ롣
֥ץ̾
.I tokens
̾ȰפͤɽʸĤä硢
.BR getsubopt ()
.I *valuep
ͤɽʸΥɥ쥹ꤹ롣
.I optionp
κǽΥޤϥ̥ХȤǾ롣Τᡢ
.I *valuep
ϤΥ֥ץΡͤʸפΤΤȤʤ롣
֥ץǧ줿ͤɽʸĤʤä硢
.RI * valuep
NULL ꤵ롣
.BR getsubopt ()
֤
.I optionp
ϼΥ֥ץؤƤ롣
礦ɺǸΥ֥ץ줿ϡ
ʸΥ̥ʸؤƤ롣
.SH ֤
.I optionp
ǥ֥ץĤä硢
.BR getsubopt ()
ϺǽΥ֥ץ˥ޥå
.I tokens
Ǥź֤
Ĥʤä硢\-1 ֤ξ硢
.I *valuep
.IB name [= value ]
ʸΤȤʤ롣
.I *optionp
ѹΤǡ
.BR getsubopt ()
ƤӽФκǽΥ֥ץ
.BR getsubopt ()
ƤӽФΥ֥ץɬƱȤϸ¤ʤ
.SH
POSIX.1-2001.
.SH
.BR getsubopt ()
ϡʸ
.RI * optionp
˸ĤޤΤǡʸ
.I *optionp
Ͻ߲ǽǤʤФʤ餺
ʸˤ뤳ȤϤǤʤ
.SH
ʲΥץ "\-o" ץ³ƥ֥ץ뤳Ȥ
ԤƤ롣
.nf
#define _XOPEN_SOURCE 500
#include <stdlib.h>
#include <assert.h>
#include <stdio.h>
int main(int argc, char **argv)
{
enum {
RO_OPT = 0,
RW_OPT,
NAME_OPT
};
char *const token[] = {
[RO_OPT] = "ro",
[RW_OPT] = "rw",
[NAME_OPT] = "name",
NULL
};
char *subopts;
char *value;
int opt;
int readonly = 0;
int readwrite = 0;
char *name = NULL;
int errfnd = 0;
while ((opt = getopt(argc, argv, "o:")) != \-1) {
switch (opt) {
case \(aqo\(aq:
subopts = optarg;
while (*subopts != \(aq\\0\(aq && !errfnd) {
switch (getsubopt(&subopts, token, &value)) {
case RO_OPT:
readonly = 1;
break;
case RW_OPT:
readwrite = 1;
break;
case NAME_OPT:
if (value == NULL) {
fprintf(stderr, "Missing value for "
"suboption \(aq%s\(aq\\n", token[NAME_OPT]);
errfnd = 1;
continue;
}
name = value;
break;
default:
fprintf(stderr, "No match found "
"for token: /%s/\\n", value);
errfnd = 1;
break;
}
}
if (readwrite && readonly) {
fprintf(stderr, "Only one of \(aq%s\(aq and \(aq%s\(aq can be "
"specified\\n", token[RO_OPT], token[RW_OPT]);
errfnd = 1;
}
break;
default:
errfnd = 1;
}
}
if (errfnd || argc == 1) {
fprintf(stderr, "\\nUsage: %s \-o <suboptstring>\\n", argv[0]);
fprintf(stderr, "suboptions are \(aqro\(aq, \(aqrw\(aq, "
"and \(aqname=<value>\(aq\\n");
exit(EXIT_FAILURE);
}
/* Remainder of program... */
exit(EXIT_SUCCESS);
}
.fi
.SH Ϣ
.BR getopt (3),
.BR feature_test_macros (7)
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