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livetrax/libs/pbd/msvc/getopt_long.c

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/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */
/* $FreeBSD: src/lib/libc/stdlib/getopt_long.c,v 1.2 2002/10/16 22:18:42 alfred Exp $ */
/*-
* 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 <stdlib.h>
#include <string.h>
#ifdef PLATFORM_WINDOWS
#ifdef COMPILER_MSVC
#include "pbd/msvc_pbd.h" // Defines 'GETOPT_API'
#endif
/* Windows needs warnx(). We change the definition though:
* 1. (another) global is defined, opterrmsg, which holds the error message
* 2. errors are always printed out on stderr w/o the program name
* Note that opterrmsg always gets set no matter what opterr is set to. The
* error message will not be printed if opterr is 0 as usual.
*/
#include "getopt.h"
#include <stdio.h>
#include <stdarg.h>
GETOPT_API extern char opterrmsg[128];
char opterrmsg[128]; /* last error message is stored here */
static void warnx(int print_error, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (fmt != NULL)
_vsnprintf(opterrmsg, 128, fmt, ap);
else
opterrmsg[0]='\0';
va_end(ap);
if (print_error) {
fprintf(stderr, opterrmsg);
fprintf(stderr, "\n");
}
}
#endif /*PLATFORM_WINDOWS*/
/* 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(int, char * const *, const char *);
static int gcd(int, int);
static void permute_args(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(int a, int b)
{
int c;
c = a % b;
while (c != 0) {
a = b;
b = c;
c = a % b;
}
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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(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(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 = (char*)strchr(options + (IGNORE_FIRST ? 1 : 0), optchar)) == NULL) {
/* option letter unknown or ':' */
if (!*place)
++optind;
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(illoptchar, optchar);
#else
warnx(PRINT_ERROR, illoptchar, optchar);
#endif
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;
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(recargchar, optchar);
#else
warnx(PRINT_ERROR, recargchar, optchar);
#endif
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;
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(recargchar, optchar);
#else
warnx(PRINT_ERROR, recargchar, optchar);
#endif
optopt = optchar;
return BADARG;
} else
optarg = nargv[optind];
}
place = EMSG;
++optind;
}
/* dump back option letter */
return optchar;
}
__BEGIN_DECLS // Added by JE - 31-01-2010
#ifdef REPLACE_GETOPT
/*
* getopt --
* Parse argc/argv argument vector.
*
* [eventually this will replace the real getopt]
*/
GETOPT_API int // 'GETOPT_API' declaration added by JE - 31-01-2010
getopt(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.
*/
GETOPT_API int // 'GETOPT_API' declaration added by JE - 31-01-2010
getopt_long(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);
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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 */
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(ambig, (int)current_argv_len,
current_argv);
#else
warnx(PRINT_ERROR, ambig, (int)current_argv_len,
current_argv);
#endif
optopt = 0;
return BADCH;
}
}
if (match != -1) { /* option found */
if (long_options[match].has_arg == no_argument
&& has_equal) {
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(noarg, (int)current_argv_len,
current_argv);
#else
warnx(PRINT_ERROR, noarg, (int)current_argv_len,
current_argv);
#endif
/*
* 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
*/
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(recargstring, current_argv);
#else
warnx(PRINT_ERROR, recargstring, current_argv);
#endif
/*
* 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 */
#ifndef PLATFORM_WINDOWS
if (PRINT_ERROR)
warnx(illoptstring, current_argv);
#else
warnx(PRINT_ERROR, illoptstring, current_argv);
#endif
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;
}
__END_DECLS // Added by JE - 31-01-2010
#endif /* !GETOPT_LONG */