Add getopt_long(3).
Obtained from: NetBSD Sponsored by: Apple
This commit is contained in:
parent
0cd3964f6d
commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=104128
@ -11,7 +11,7 @@ SUBDIR= arpa protocols rpcsvc rpc
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INCS= a.out.h ar.h assert.h bitstring.h complex.h cpio.h ctype.h db.h \
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INCS= a.out.h ar.h assert.h bitstring.h complex.h cpio.h ctype.h db.h \
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dirent.h \
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dirent.h \
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dlfcn.h elf.h elf-hints.h err.h fnmatch.h fmtmsg.h fstab.h \
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dlfcn.h elf.h elf-hints.h err.h fnmatch.h fmtmsg.h fstab.h \
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fts.h glob.h grp.h \
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fts.h getopt.h glob.h grp.h \
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hesiod.h histedit.h ieeefp.h ifaddrs.h inttypes.h iso646.h kenv.h \
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hesiod.h histedit.h ieeefp.h ifaddrs.h inttypes.h iso646.h kenv.h \
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langinfo.h \
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langinfo.h \
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libgen.h limits.h link.h locale.h malloc.h memory.h monetary.h mpool.h \
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libgen.h limits.h link.h locale.h malloc.h memory.h monetary.h mpool.h \
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74
include/getopt.h
Normal file
74
include/getopt.h
Normal file
@ -0,0 +1,74 @@
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/* $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $ */
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/* $FreeBSD$ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Dieter Baron and Thomas Klausner.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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|
* notice, this list of conditions and the following disclaimer.
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|
* 2. Redistributions in binary form must reproduce the above copyright
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|
* notice, this list of conditions and the following disclaimer in the
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|
* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _GETOPT_H_
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#define _GETOPT_H_
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#include <sys/cdefs.h>
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#include <unistd.h>
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/*
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* Gnu like getopt_long() and BSD4.4 getsubopt()/optreset extensions
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*/
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#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
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#define no_argument 0
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#define required_argument 1
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#define optional_argument 2
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struct option {
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/* name of long option */
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const char *name;
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/*
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* one of no_argument, required_argument, and optional_argument:
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* whether option takes an argument
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*/
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int has_arg;
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/* if not NULL, set *flag to val when option found */
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int *flag;
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/* if flag not NULL, value to set *flag to; else return value */
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int val;
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};
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__BEGIN_DECLS
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int getopt_long __P((int, char * const *, const char *,
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const struct option *, int *));
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__END_DECLS
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#endif
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#endif /* !_GETOPT_H_ */
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@ -5,7 +5,7 @@
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.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/stdlib ${.CURDIR}/../libc/stdlib
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.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/stdlib ${.CURDIR}/../libc/stdlib
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MISRCS+=_Exit.c abort.c abs.c atexit.c atof.c atoi.c atol.c atoll.c \
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MISRCS+=_Exit.c abort.c abs.c atexit.c atof.c atoi.c atol.c atoll.c \
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bsearch.c calloc.c div.c exit.c getenv.c getopt.c \
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bsearch.c calloc.c div.c exit.c getenv.c getopt.c getopt_long.c \
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getsubopt.c hcreate.c heapsort.c imaxabs.c imaxdiv.c \
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getsubopt.c hcreate.c heapsort.c imaxabs.c imaxdiv.c \
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labs.c ldiv.c llabs.c lldiv.c malloc.c merge.c putenv.c \
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labs.c ldiv.c llabs.c lldiv.c malloc.c merge.c putenv.c \
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qsort.c qsort_r.c radixsort.c rand.c random.c reallocf.c realpath.c \
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qsort.c qsort_r.c radixsort.c rand.c random.c reallocf.c realpath.c \
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@ -20,7 +20,7 @@ MISRCS+=_Exit.c abort.c abs.c atexit.c atof.c atoi.c atol.c atoll.c \
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.if ${LIB} == "c"
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.if ${LIB} == "c"
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MAN+= abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 bsearch.3 \
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MAN+= abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 bsearch.3 \
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div.3 exit.3 getenv.3 getopt.3 getsubopt.3 hcreate.3 \
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div.3 exit.3 getenv.3 getopt.3 getopt_long.3 getsubopt.3 hcreate.3 \
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imaxabs.3 imaxdiv.3 labs.3 ldiv.3 llabs.3 lldiv.3 \
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imaxabs.3 imaxdiv.3 labs.3 ldiv.3 llabs.3 lldiv.3 \
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malloc.3 memory.3 qsort.3 radixsort.3 rand.3 random.3 \
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malloc.3 memory.3 qsort.3 radixsort.3 rand.3 random.3 \
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realpath.3 strfmon.3 strtod.3 strtol.3 strtoul.3 system.3 tsearch.3
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realpath.3 strfmon.3 strtod.3 strtol.3 strtoul.3 system.3 tsearch.3
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275
lib/libc/stdlib/getopt_long.3
Normal file
275
lib/libc/stdlib/getopt_long.3
Normal file
@ -0,0 +1,275 @@
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.\" $NetBSD: getopt_long.3,v 1.8 2002/06/03 12:01:43 wiz Exp $
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.\" $FreeBSD$
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.\"
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.\" Copyright (c) 1988, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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|
.\" notice, this list of conditions and the following disclaimer.
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|
.\" 2. Redistributions in binary form must reproduce the above copyright
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|
.\" notice, this list of conditions and the following disclaimer in the
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|
.\" documentation and/or other materials provided with the distribution.
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|
.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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|
.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)getopt.3 8.5 (Berkeley) 4/27/95
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.\"
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.Dd April 1, 2000
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.Dt GETOPT_LONG 3
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.Os
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.Sh NAME
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.Nm getopt_long
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.Nd get long options from command line argument list
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.Fd #include \*[Lt]getopt.h\*[Gt]
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.Ft int
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.Fn getopt_long "int argc" "char * const *argv" "const char *optstring" "struct option *long options" "int *index"
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.Sh DESCRIPTION
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The
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.Fn getopt_long
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function is similar to
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.Xr getopt 3
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but it accepts options in two forms: words and characters. The
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.Fn getopt_long
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function provides a superset of of the functionality of
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.Xr getopt 3 .
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.Fn getopt_long
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can be used in two ways. In the first way, every long option understood
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by the program has a corresponding short option, and the option
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structure is only used to translate from long options to short
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options. When used in this fashion,
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.Fn getopt_long
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behaves identically to
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.Xr getopt 3 .
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This is a good way to add long option processing to an existing program
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with the minimum of rewriting.
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.Pp
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In the second mechanism, a long option sets a flag in the
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.Fa option
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structure passed, or will store a pointer to the command line argument
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in the
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.Fa option
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structure passed to it for options that take arguments. Additionally,
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the long option's argument may be specified as a single argument with
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an equal sign, e.g.
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.Bd -literal
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myprogram --myoption=somevalue
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.Ed
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.Pp
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When a long option is processed the call to
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.Fn getopt_long
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will return 0. For this reason, long option processing without
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shortcuts is not backwards compatible with
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.Xr getopt 3 .
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.Pp
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It is possible to combine these methods, providing for long options
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processing with short option equivalents for some options. Less
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frequently used options would be processed as long options only.
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.Pp
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The
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.Fn getopt_long
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call requires a structure to be initialized describing the long
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options. The structure is:
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.Bd -literal
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struct option {
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char *name;
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int has_arg;
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int *flag;
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int val;
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};
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.Ed
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.Pp
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The
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.Fa name
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field should contain the option name without the leading double dash.
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.Pp
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The
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.Fa has_arg
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field should be one of:
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.Bl -tag -width "optional_argument"
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.It Li no_argument
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no argument to the option is expect.
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.It Li required_argument
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an argument to the option is required.
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.It Li optional_argument
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an argument to the option may be presented.
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.El
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.Pp
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If
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.Fa flag
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is non-NULL, then the integer pointed to by it will be set to the
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value in the
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.Fa val
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field. If the
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.Fa flag
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field is NULL, then the
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.Fa val
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field will be returned. Setting
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.Fa flag
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to NULL and setting
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.Fa val
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to the corresponding short option will make this function act just
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like
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.Xr getopt 3 .
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.Sh EXAMPLES
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.Bd -literal -compact
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extern char *optarg;
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extern int optind;
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int bflag, ch, fd;
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int daggerset;
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/* options descriptor */
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static struct option longopts[] = {
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{ "buffy", no_argument, 0, 'b' },
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{ "floride", required_argument, 0, 'f' },
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{ "daggerset", no_argument, \*[Am]daggerset, 1 },
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{ 0, 0, 0, 0 }
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};
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bflag = 0;
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while ((ch = getopt_long(argc, argv, "bf:", longopts, NULL)) != -1)
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switch(ch) {
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case 'b':
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bflag = 1;
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break;
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case 'f':
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if ((fd = open(optarg, O_RDONLY, 0)) \*[Lt] 0) {
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(void)fprintf(stderr,
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"myname: %s: %s\en", optarg, strerror(errno));
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exit(1);
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}
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break;
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case 0:
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if(daggerset) {
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fprintf(stderr,"Buffy will use her dagger to "
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"apply floride to dracula's teeth\en");
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}
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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.Ed
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.Sh IMPLEMENTATION DIFFERENCES
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This section describes differences to the GNU implementation
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found in glibc-2.1.3:
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.Bl -tag -width "xxx"
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.It Li o
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handling of - as first char of option string in presence of
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environment variable POSIXLY_CORRECT:
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.Bl -tag -width "NetBSD"
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.It Li GNU
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ignores POSIXLY_CORRECT and returns non-options as
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arguments to option '\e1'.
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.It Li NetBSD
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honors POSIXLY_CORRECT and stops at the first non-option.
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.El
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.It Li o
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|
handling of :: in options string in presence of POSIXLY_CORRECT:
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.Bl -tag -width "NetBSD"
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.It Li Both
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GNU and NetBSD ignore POSIXLY_CORRECT here and take :: to
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mean the preceding option takes an optional argument.
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.El
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.It Li o
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return value in case of missing argument if first character
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(after + or -) in option string is not ':':
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.Bl -tag -width "NetBSD"
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.It Li GNU
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returns '?'
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.It NetBSD
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returns ':' (since NetBSD's getopt does).
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.El
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.It Li o
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|
handling of --a in getopt:
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.Bl -tag -width "NetBSD"
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.It Li GNU
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parses this as option '-', option 'a'.
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.It Li NetBSD
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parses this as '--', and returns -1 (ignoring the a). (Because
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the original getopt does.)
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.El
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.It Li o
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|
setting of optopt for long options with flag != NULL:
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.Bl -tag -width "NetBSD"
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.It Li GNU
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sets optopt to val.
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.It Li NetBSD
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sets optopt to 0 (since val would never be returned).
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.El
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.It Li o
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|
handling of -W with W; in option string in getopt (not getopt_long):
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.Bl -tag -width "NetBSD"
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.It Li GNU
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|
causes a segfault.
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.It Li NetBSD
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returns -1, with optind pointing past the argument of -W
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(as if `-W arg' were `--arg', and thus '--' had been found).
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.\" How should we treat W; in the option string when called via
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.\" getopt? Ignore the ';' or treat it as a ':'? Issue a warning?
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.El
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.It Li o
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|
setting of optarg for long options without an argument that are
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invoked via -W (W; in option string):
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.Bl -tag -width "NetBSD"
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.It Li GNU
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sets optarg to the option name (the argument of -W).
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.It Li NetBSD
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||||||
|
sets optarg to NULL (the argument of the long option).
|
||||||
|
.El
|
||||||
|
.It Li o
|
||||||
|
handling of -W with an argument that is not (a prefix to) a known
|
||||||
|
long option (W; in option string):
|
||||||
|
.Bl -tag -width "NetBSD"
|
||||||
|
.It Li GNU
|
||||||
|
returns -W with optarg set to the unknown option.
|
||||||
|
.It Li NetBSD
|
||||||
|
treats this as an error (unknown option) and returns '?' with
|
||||||
|
optopt set to 0 and optarg set to NULL (as GNU's man page
|
||||||
|
documents).
|
||||||
|
.El
|
||||||
|
.It Li o
|
||||||
|
The error messages are different.
|
||||||
|
.It Li o
|
||||||
|
NetBSD does not permute the argument vector at the same points in
|
||||||
|
the calling sequence as GNU does. The aspects normally used by
|
||||||
|
the caller (ordering after -1 is returned, value of optind relative
|
||||||
|
to current positions) are the same, though. (We do fewer variable
|
||||||
|
swaps.)
|
||||||
|
.El
|
||||||
|
.Sh SEE ALSO
|
||||||
|
.Xr getopt 3
|
||||||
|
.Sh HISTORY
|
||||||
|
The
|
||||||
|
.Fn getopt_long
|
||||||
|
function first appeared in GNU libiberty. The first
|
||||||
|
.Nx
|
||||||
|
implementation appeared in 1.5.
|
||||||
|
.Sh BUGS
|
||||||
|
The implementation, can completelely replace
|
||||||
|
.Xr getopt 3 ,
|
||||||
|
but right now we are using separate code.
|
494
lib/libc/stdlib/getopt_long.c
Normal file
494
lib/libc/stdlib/getopt_long.c
Normal file
@ -0,0 +1,494 @@
|
|||||||
|
/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */
|
||||||
|
/* $FreeBSD$ */
|
||||||
|
|
||||||
|
/*-
|
||||||
|
* Copyright (c) 2000 The NetBSD Foundation, Inc.
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* This code is derived from software contributed to The NetBSD Foundation
|
||||||
|
* by Dieter Baron and Thomas Klausner.
|
||||||
|
*
|
||||||
|
* 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 NetBSD
|
||||||
|
* Foundation, Inc. and its contributors.
|
||||||
|
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <sys/cdefs.h>
|
||||||
|
#if defined(LIBC_SCCS) && !defined(lint)
|
||||||
|
__RCSID("$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $");
|
||||||
|
#endif /* LIBC_SCCS and not lint */
|
||||||
|
|
||||||
|
#include "namespace.h"
|
||||||
|
|
||||||
|
#include <assert.h>
|
||||||
|
#include <err.h>
|
||||||
|
#include <errno.h>
|
||||||
|
#include <getopt.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
/* not part of the original file */
|
||||||
|
#ifndef _DIAGASSERT
|
||||||
|
#define _DIAGASSERT(X)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if HAVE_CONFIG_H && !HAVE_GETOPT_LONG && !HAVE_DECL_OPTIND
|
||||||
|
#define REPLACE_GETOPT
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef REPLACE_GETOPT
|
||||||
|
#ifdef __weak_alias
|
||||||
|
__weak_alias(getopt,_getopt)
|
||||||
|
#endif
|
||||||
|
int opterr = 1; /* if error message should be printed */
|
||||||
|
int optind = 1; /* index into parent argv vector */
|
||||||
|
int optopt = '?'; /* character checked for validity */
|
||||||
|
int optreset; /* reset getopt */
|
||||||
|
char *optarg; /* argument associated with option */
|
||||||
|
#elif HAVE_CONFIG_H && !HAVE_DECL_OPTRESET
|
||||||
|
static int optreset;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef __weak_alias
|
||||||
|
__weak_alias(getopt_long,_getopt_long)
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if !HAVE_GETOPT_LONG
|
||||||
|
#define IGNORE_FIRST (*options == '-' || *options == '+')
|
||||||
|
#define PRINT_ERROR ((opterr) && ((*options != ':') \
|
||||||
|
|| (IGNORE_FIRST && options[1] != ':')))
|
||||||
|
#define IS_POSIXLY_CORRECT (getenv("POSIXLY_CORRECT") != NULL)
|
||||||
|
#define PERMUTE (!IS_POSIXLY_CORRECT && !IGNORE_FIRST)
|
||||||
|
/* XXX: GNU ignores PC if *options == '-' */
|
||||||
|
#define IN_ORDER (!IS_POSIXLY_CORRECT && *options == '-')
|
||||||
|
|
||||||
|
/* return values */
|
||||||
|
#define BADCH (int)'?'
|
||||||
|
#define BADARG ((IGNORE_FIRST && options[1] == ':') \
|
||||||
|
|| (*options == ':') ? (int)':' : (int)'?')
|
||||||
|
#define INORDER (int)1
|
||||||
|
|
||||||
|
#define EMSG ""
|
||||||
|
|
||||||
|
static int getopt_internal __P((int, char * const *, const char *));
|
||||||
|
static int gcd __P((int, int));
|
||||||
|
static void permute_args __P((int, int, int, char * const *));
|
||||||
|
|
||||||
|
static char *place = EMSG; /* option letter processing */
|
||||||
|
|
||||||
|
/* XXX: set optreset to 1 rather than these two */
|
||||||
|
static int nonopt_start = -1; /* first non option argument (for permute) */
|
||||||
|
static int nonopt_end = -1; /* first option after non options (for permute) */
|
||||||
|
|
||||||
|
/* Error messages */
|
||||||
|
static const char recargchar[] = "option requires an argument -- %c";
|
||||||
|
static const char recargstring[] = "option requires an argument -- %s";
|
||||||
|
static const char ambig[] = "ambiguous option -- %.*s";
|
||||||
|
static const char noarg[] = "option doesn't take an argument -- %.*s";
|
||||||
|
static const char illoptchar[] = "unknown option -- %c";
|
||||||
|
static const char illoptstring[] = "unknown option -- %s";
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Compute the greatest common divisor of a and b.
|
||||||
|
*/
|
||||||
|
static int
|
||||||
|
gcd(a, b)
|
||||||
|
int a;
|
||||||
|
int b;
|
||||||
|
{
|
||||||
|
int c;
|
||||||
|
|
||||||
|
c = a % b;
|
||||||
|
while (c != 0) {
|
||||||
|
a = b;
|
||||||
|
b = c;
|
||||||
|
c = a % b;
|
||||||
|
}
|
||||||
|
|
||||||
|
return b;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Exchange the block from nonopt_start to nonopt_end with the block
|
||||||
|
* from nonopt_end to opt_end (keeping the same order of arguments
|
||||||
|
* in each block).
|
||||||
|
*/
|
||||||
|
static void
|
||||||
|
permute_args(panonopt_start, panonopt_end, opt_end, nargv)
|
||||||
|
int panonopt_start;
|
||||||
|
int panonopt_end;
|
||||||
|
int opt_end;
|
||||||
|
char * const *nargv;
|
||||||
|
{
|
||||||
|
int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
|
||||||
|
char *swap;
|
||||||
|
|
||||||
|
_DIAGASSERT(nargv != NULL);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* compute lengths of blocks and number and size of cycles
|
||||||
|
*/
|
||||||
|
nnonopts = panonopt_end - panonopt_start;
|
||||||
|
nopts = opt_end - panonopt_end;
|
||||||
|
ncycle = gcd(nnonopts, nopts);
|
||||||
|
cyclelen = (opt_end - panonopt_start) / ncycle;
|
||||||
|
|
||||||
|
for (i = 0; i < ncycle; i++) {
|
||||||
|
cstart = panonopt_end+i;
|
||||||
|
pos = cstart;
|
||||||
|
for (j = 0; j < cyclelen; j++) {
|
||||||
|
if (pos >= panonopt_end)
|
||||||
|
pos -= nnonopts;
|
||||||
|
else
|
||||||
|
pos += nopts;
|
||||||
|
swap = nargv[pos];
|
||||||
|
/* LINTED const cast */
|
||||||
|
((char **) nargv)[pos] = nargv[cstart];
|
||||||
|
/* LINTED const cast */
|
||||||
|
((char **)nargv)[cstart] = swap;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* getopt_internal --
|
||||||
|
* Parse argc/argv argument vector. Called by user level routines.
|
||||||
|
* Returns -2 if -- is found (can be long option or end of options marker).
|
||||||
|
*/
|
||||||
|
static int
|
||||||
|
getopt_internal(nargc, nargv, options)
|
||||||
|
int nargc;
|
||||||
|
char * const *nargv;
|
||||||
|
const char *options;
|
||||||
|
{
|
||||||
|
char *oli; /* option letter list index */
|
||||||
|
int optchar;
|
||||||
|
|
||||||
|
_DIAGASSERT(nargv != NULL);
|
||||||
|
_DIAGASSERT(options != NULL);
|
||||||
|
|
||||||
|
optarg = NULL;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* XXX Some programs (like rsyncd) expect to be able to
|
||||||
|
* XXX re-initialize optind to 0 and have getopt_long(3)
|
||||||
|
* XXX properly function again. Work around this braindamage.
|
||||||
|
*/
|
||||||
|
if (optind == 0)
|
||||||
|
optind = 1;
|
||||||
|
|
||||||
|
if (optreset)
|
||||||
|
nonopt_start = nonopt_end = -1;
|
||||||
|
start:
|
||||||
|
if (optreset || !*place) { /* update scanning pointer */
|
||||||
|
optreset = 0;
|
||||||
|
if (optind >= nargc) { /* end of argument vector */
|
||||||
|
place = EMSG;
|
||||||
|
if (nonopt_end != -1) {
|
||||||
|
/* do permutation, if we have to */
|
||||||
|
permute_args(nonopt_start, nonopt_end,
|
||||||
|
optind, nargv);
|
||||||
|
optind -= nonopt_end - nonopt_start;
|
||||||
|
}
|
||||||
|
else if (nonopt_start != -1) {
|
||||||
|
/*
|
||||||
|
* If we skipped non-options, set optind
|
||||||
|
* to the first of them.
|
||||||
|
*/
|
||||||
|
optind = nonopt_start;
|
||||||
|
}
|
||||||
|
nonopt_start = nonopt_end = -1;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
if ((*(place = nargv[optind]) != '-')
|
||||||
|
|| (place[1] == '\0')) { /* found non-option */
|
||||||
|
place = EMSG;
|
||||||
|
if (IN_ORDER) {
|
||||||
|
/*
|
||||||
|
* GNU extension:
|
||||||
|
* return non-option as argument to option 1
|
||||||
|
*/
|
||||||
|
optarg = nargv[optind++];
|
||||||
|
return INORDER;
|
||||||
|
}
|
||||||
|
if (!PERMUTE) {
|
||||||
|
/*
|
||||||
|
* if no permutation wanted, stop parsing
|
||||||
|
* at first non-option
|
||||||
|
*/
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
/* do permutation */
|
||||||
|
if (nonopt_start == -1)
|
||||||
|
nonopt_start = optind;
|
||||||
|
else if (nonopt_end != -1) {
|
||||||
|
permute_args(nonopt_start, nonopt_end,
|
||||||
|
optind, nargv);
|
||||||
|
nonopt_start = optind -
|
||||||
|
(nonopt_end - nonopt_start);
|
||||||
|
nonopt_end = -1;
|
||||||
|
}
|
||||||
|
optind++;
|
||||||
|
/* process next argument */
|
||||||
|
goto start;
|
||||||
|
}
|
||||||
|
if (nonopt_start != -1 && nonopt_end == -1)
|
||||||
|
nonopt_end = optind;
|
||||||
|
if (place[1] && *++place == '-') { /* found "--" */
|
||||||
|
place++;
|
||||||
|
return -2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if ((optchar = (int)*place++) == (int)':' ||
|
||||||
|
(oli = strchr(options + (IGNORE_FIRST ? 1 : 0), optchar)) == NULL) {
|
||||||
|
/* option letter unknown or ':' */
|
||||||
|
if (!*place)
|
||||||
|
++optind;
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(illoptchar, optchar);
|
||||||
|
optopt = optchar;
|
||||||
|
return BADCH;
|
||||||
|
}
|
||||||
|
if (optchar == 'W' && oli[1] == ';') { /* -W long-option */
|
||||||
|
/* XXX: what if no long options provided (called by getopt)? */
|
||||||
|
if (*place)
|
||||||
|
return -2;
|
||||||
|
|
||||||
|
if (++optind >= nargc) { /* no arg */
|
||||||
|
place = EMSG;
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(recargchar, optchar);
|
||||||
|
optopt = optchar;
|
||||||
|
return BADARG;
|
||||||
|
} else /* white space */
|
||||||
|
place = nargv[optind];
|
||||||
|
/*
|
||||||
|
* Handle -W arg the same as --arg (which causes getopt to
|
||||||
|
* stop parsing).
|
||||||
|
*/
|
||||||
|
return -2;
|
||||||
|
}
|
||||||
|
if (*++oli != ':') { /* doesn't take argument */
|
||||||
|
if (!*place)
|
||||||
|
++optind;
|
||||||
|
} else { /* takes (optional) argument */
|
||||||
|
optarg = NULL;
|
||||||
|
if (*place) /* no white space */
|
||||||
|
optarg = place;
|
||||||
|
/* XXX: disable test for :: if PC? (GNU doesn't) */
|
||||||
|
else if (oli[1] != ':') { /* arg not optional */
|
||||||
|
if (++optind >= nargc) { /* no arg */
|
||||||
|
place = EMSG;
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(recargchar, optchar);
|
||||||
|
optopt = optchar;
|
||||||
|
return BADARG;
|
||||||
|
} else
|
||||||
|
optarg = nargv[optind];
|
||||||
|
}
|
||||||
|
place = EMSG;
|
||||||
|
++optind;
|
||||||
|
}
|
||||||
|
/* dump back option letter */
|
||||||
|
return optchar;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef REPLACE_GETOPT
|
||||||
|
/*
|
||||||
|
* getopt --
|
||||||
|
* Parse argc/argv argument vector.
|
||||||
|
*
|
||||||
|
* [eventually this will replace the real getopt]
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
getopt(nargc, nargv, options)
|
||||||
|
int nargc;
|
||||||
|
char * const *nargv;
|
||||||
|
const char *options;
|
||||||
|
{
|
||||||
|
int retval;
|
||||||
|
|
||||||
|
_DIAGASSERT(nargv != NULL);
|
||||||
|
_DIAGASSERT(options != NULL);
|
||||||
|
|
||||||
|
if ((retval = getopt_internal(nargc, nargv, options)) == -2) {
|
||||||
|
++optind;
|
||||||
|
/*
|
||||||
|
* We found an option (--), so if we skipped non-options,
|
||||||
|
* we have to permute.
|
||||||
|
*/
|
||||||
|
if (nonopt_end != -1) {
|
||||||
|
permute_args(nonopt_start, nonopt_end, optind,
|
||||||
|
nargv);
|
||||||
|
optind -= nonopt_end - nonopt_start;
|
||||||
|
}
|
||||||
|
nonopt_start = nonopt_end = -1;
|
||||||
|
retval = -1;
|
||||||
|
}
|
||||||
|
return retval;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
* getopt_long --
|
||||||
|
* Parse argc/argv argument vector.
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
getopt_long(nargc, nargv, options, long_options, idx)
|
||||||
|
int nargc;
|
||||||
|
char * const *nargv;
|
||||||
|
const char *options;
|
||||||
|
const struct option *long_options;
|
||||||
|
int *idx;
|
||||||
|
{
|
||||||
|
int retval;
|
||||||
|
|
||||||
|
_DIAGASSERT(nargv != NULL);
|
||||||
|
_DIAGASSERT(options != NULL);
|
||||||
|
_DIAGASSERT(long_options != NULL);
|
||||||
|
/* idx may be NULL */
|
||||||
|
|
||||||
|
if ((retval = getopt_internal(nargc, nargv, options)) == -2) {
|
||||||
|
char *current_argv, *has_equal;
|
||||||
|
size_t current_argv_len;
|
||||||
|
int i, match;
|
||||||
|
|
||||||
|
current_argv = place;
|
||||||
|
match = -1;
|
||||||
|
|
||||||
|
optind++;
|
||||||
|
place = EMSG;
|
||||||
|
|
||||||
|
if (*current_argv == '\0') { /* found "--" */
|
||||||
|
/*
|
||||||
|
* We found an option (--), so if we skipped
|
||||||
|
* non-options, we have to permute.
|
||||||
|
*/
|
||||||
|
if (nonopt_end != -1) {
|
||||||
|
permute_args(nonopt_start, nonopt_end,
|
||||||
|
optind, nargv);
|
||||||
|
optind -= nonopt_end - nonopt_start;
|
||||||
|
}
|
||||||
|
nonopt_start = nonopt_end = -1;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
if ((has_equal = strchr(current_argv, '=')) != NULL) {
|
||||||
|
/* argument found (--option=arg) */
|
||||||
|
current_argv_len = has_equal - current_argv;
|
||||||
|
has_equal++;
|
||||||
|
} else
|
||||||
|
current_argv_len = strlen(current_argv);
|
||||||
|
|
||||||
|
for (i = 0; long_options[i].name; i++) {
|
||||||
|
/* find matching long option */
|
||||||
|
if (strncmp(current_argv, long_options[i].name,
|
||||||
|
current_argv_len))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
if (strlen(long_options[i].name) ==
|
||||||
|
(unsigned)current_argv_len) {
|
||||||
|
/* exact match */
|
||||||
|
match = i;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (match == -1) /* partial match */
|
||||||
|
match = i;
|
||||||
|
else {
|
||||||
|
/* ambiguous abbreviation */
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(ambig, (int)current_argv_len,
|
||||||
|
current_argv);
|
||||||
|
optopt = 0;
|
||||||
|
return BADCH;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (match != -1) { /* option found */
|
||||||
|
if (long_options[match].has_arg == no_argument
|
||||||
|
&& has_equal) {
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(noarg, (int)current_argv_len,
|
||||||
|
current_argv);
|
||||||
|
/*
|
||||||
|
* XXX: GNU sets optopt to val regardless of
|
||||||
|
* flag
|
||||||
|
*/
|
||||||
|
if (long_options[match].flag == NULL)
|
||||||
|
optopt = long_options[match].val;
|
||||||
|
else
|
||||||
|
optopt = 0;
|
||||||
|
return BADARG;
|
||||||
|
}
|
||||||
|
if (long_options[match].has_arg == required_argument ||
|
||||||
|
long_options[match].has_arg == optional_argument) {
|
||||||
|
if (has_equal)
|
||||||
|
optarg = has_equal;
|
||||||
|
else if (long_options[match].has_arg ==
|
||||||
|
required_argument) {
|
||||||
|
/*
|
||||||
|
* optional argument doesn't use
|
||||||
|
* next nargv
|
||||||
|
*/
|
||||||
|
optarg = nargv[optind++];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if ((long_options[match].has_arg == required_argument)
|
||||||
|
&& (optarg == NULL)) {
|
||||||
|
/*
|
||||||
|
* Missing argument; leading ':'
|
||||||
|
* indicates no error should be generated
|
||||||
|
*/
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(recargstring, current_argv);
|
||||||
|
/*
|
||||||
|
* XXX: GNU sets optopt to val regardless
|
||||||
|
* of flag
|
||||||
|
*/
|
||||||
|
if (long_options[match].flag == NULL)
|
||||||
|
optopt = long_options[match].val;
|
||||||
|
else
|
||||||
|
optopt = 0;
|
||||||
|
--optind;
|
||||||
|
return BADARG;
|
||||||
|
}
|
||||||
|
} else { /* unknown option */
|
||||||
|
if (PRINT_ERROR)
|
||||||
|
warnx(illoptstring, current_argv);
|
||||||
|
optopt = 0;
|
||||||
|
return BADCH;
|
||||||
|
}
|
||||||
|
if (long_options[match].flag) {
|
||||||
|
*long_options[match].flag = long_options[match].val;
|
||||||
|
retval = 0;
|
||||||
|
} else
|
||||||
|
retval = long_options[match].val;
|
||||||
|
if (idx)
|
||||||
|
*idx = match;
|
||||||
|
}
|
||||||
|
return retval;
|
||||||
|
}
|
||||||
|
#endif /* !GETOPT_LONG */
|
Loading…
Reference in New Issue
Block a user