mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
216 lines
5.4 KiB
C
216 lines
5.4 KiB
C
/*-
|
|
* Copyright (c) 1991 Keith Muller.
|
|
* Copyright (c) 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Keith Muller of the University of California, San Diego.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)egetopt.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "extern.h"
|
|
|
|
/*
|
|
* egetopt: get option letter from argument vector (an extended
|
|
* version of getopt).
|
|
*
|
|
* Non standard additions to the ostr specs are:
|
|
* 1) '?': immediate value following arg is optional (no white space
|
|
* between the arg and the value)
|
|
* 2) '#': +/- followed by a number (with an optional sign but
|
|
* no white space between the arg and the number). The - may be
|
|
* combined with other options, but the + cannot.
|
|
*/
|
|
|
|
int eopterr = 1; /* if error message should be printed */
|
|
int eoptind = 1; /* index into parent argv vector */
|
|
int eoptopt; /* character checked for validity */
|
|
char *eoptarg; /* argument associated with option */
|
|
|
|
#define BADCH (int)'?'
|
|
#define EMSG ""
|
|
|
|
int
|
|
egetopt(nargc, nargv, ostr)
|
|
int nargc;
|
|
char * const *nargv;
|
|
const char *ostr;
|
|
{
|
|
static char *place = EMSG; /* option letter processing */
|
|
register char *oli; /* option letter list index */
|
|
static int delim; /* which option delimeter */
|
|
register char *p;
|
|
static char savec = '\0';
|
|
|
|
if (savec != '\0') {
|
|
*place = savec;
|
|
savec = '\0';
|
|
}
|
|
|
|
if (!*place) {
|
|
/*
|
|
* update scanning pointer
|
|
*/
|
|
if ((eoptind >= nargc) ||
|
|
((*(place = nargv[eoptind]) != '-') && (*place != '+'))) {
|
|
place = EMSG;
|
|
return (EOF);
|
|
}
|
|
|
|
delim = (int)*place;
|
|
if (place[1] && *++place == '-' && !place[1]) {
|
|
/*
|
|
* found "--"
|
|
*/
|
|
++eoptind;
|
|
place = EMSG;
|
|
return (EOF);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* check option letter
|
|
*/
|
|
if ((eoptopt = (int)*place++) == (int)':' || (eoptopt == (int)'?') ||
|
|
!(oli = strchr(ostr, eoptopt))) {
|
|
/*
|
|
* if the user didn't specify '-' as an option,
|
|
* assume it means EOF when by itself.
|
|
*/
|
|
if ((eoptopt == (int)'-') && !*place)
|
|
return (EOF);
|
|
if (strchr(ostr, '#') && (isdigit(eoptopt) ||
|
|
(((eoptopt == (int)'-') || (eoptopt == (int)'+')) &&
|
|
isdigit(*place)))) {
|
|
/*
|
|
* # option: +/- with a number is ok
|
|
*/
|
|
for (p = place; *p != '\0'; ++p) {
|
|
if (!isdigit(*p))
|
|
break;
|
|
}
|
|
eoptarg = place-1;
|
|
|
|
if (*p == '\0') {
|
|
place = EMSG;
|
|
++eoptind;
|
|
} else {
|
|
place = p;
|
|
savec = *p;
|
|
*place = '\0';
|
|
}
|
|
return (delim);
|
|
}
|
|
|
|
if (!*place)
|
|
++eoptind;
|
|
if (eopterr) {
|
|
if (!(p = strrchr(*nargv, '/')))
|
|
p = *nargv;
|
|
else
|
|
++p;
|
|
(void)fprintf(stderr, "%s: illegal option -- %c\n",
|
|
p, eoptopt);
|
|
}
|
|
return (BADCH);
|
|
}
|
|
if (delim == (int)'+') {
|
|
/*
|
|
* '+' is only allowed with numbers
|
|
*/
|
|
if (!*place)
|
|
++eoptind;
|
|
if (eopterr) {
|
|
if (!(p = strrchr(*nargv, '/')))
|
|
p = *nargv;
|
|
else
|
|
++p;
|
|
(void)fprintf(stderr,
|
|
"%s: illegal '+' delimiter with option -- %c\n",
|
|
p, eoptopt);
|
|
}
|
|
return (BADCH);
|
|
}
|
|
++oli;
|
|
if ((*oli != ':') && (*oli != '?')) {
|
|
/*
|
|
* don't need argument
|
|
*/
|
|
eoptarg = NULL;
|
|
if (!*place)
|
|
++eoptind;
|
|
return (eoptopt);
|
|
}
|
|
|
|
if (*place) {
|
|
/*
|
|
* no white space
|
|
*/
|
|
eoptarg = place;
|
|
} else if (*oli == '?') {
|
|
/*
|
|
* no arg, but NOT required
|
|
*/
|
|
eoptarg = NULL;
|
|
} else if (nargc <= ++eoptind) {
|
|
/*
|
|
* no arg, but IS required
|
|
*/
|
|
place = EMSG;
|
|
if (eopterr) {
|
|
if (!(p = strrchr(*nargv, '/')))
|
|
p = *nargv;
|
|
else
|
|
++p;
|
|
(void)fprintf(stderr,
|
|
"%s: option requires an argument -- %c\n", p,
|
|
eoptopt);
|
|
}
|
|
return (BADCH);
|
|
} else {
|
|
/*
|
|
* arg has white space
|
|
*/
|
|
eoptarg = nargv[eoptind];
|
|
}
|
|
place = EMSG;
|
|
++eoptind;
|
|
return (eoptopt);
|
|
}
|