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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvi2bitmap/getopt_long.h
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+/* Declarations for getopt.
+ Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 2000
+ Free Software Foundation, Inc.
+
+ NOTE: The canonical source of this file is maintained with the GNU C Library.
+ Bugs can be reported to bug-glibc@gnu.org.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option) any
+ later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ USA. */
+
+#ifndef _GETOPT_H
+#define _GETOPT_H 1
+
+#include <config.h>
+
+#if HAVE_UNISTD_H
+/* Declares getopt, if present */
+#include <unistd.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* We're building this with a C++ compiler, essentially. Such
+ compilers are not required to define __STDC__, but the path we
+ should follow, below, is indeed that marked by __STDC__. We don't
+ want to force a definition of __STDC__ (though that works), because
+ (a) that feels bad, and (b) some compilers perfectly reasonable
+ complain bitterly about it. So define THIS_IS__STDC__, and replace
+ occurrences of __STDC__ throughout with that.
+
+ That means that all of the occurrences of THIS_IS__STDC__ in this
+ file and in getopt_long.c are redundant, but I'm leaving them here
+ in case it becomes necessary to do cleverer things with it than
+ simply define it to be 1, and also as a sort of warped documentation. */
+#define THIS_IS__STDC__ 1
+
+#if !HAVE_DECL_GETOPT
+/* For communication from `getopt' to the caller.
+ When `getopt' finds an option that takes an argument,
+ the argument value is returned here.
+ Also, when `ordering' is RETURN_IN_ORDER,
+ each non-option ARGV-element is returned here. */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+ This is used for communication to and from the caller
+ and for communication between successive calls to `getopt'.
+
+ On entry to `getopt', zero means this is the first call; initialize.
+
+ When `getopt' returns -1, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, `optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+ for unrecognized options. */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized. */
+
+extern int optopt;
+
+#endif /* ifndef HAVE_DECL_GETOPT */
+
+#if !HAVE_DECL_GETOPT_LONG
+/* Describe the long-named options requested by the application.
+ The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+ of `struct option' terminated by an element containing a name which is
+ zero.
+
+ The field `has_arg' is:
+ no_argument (or 0) if the option does not take an argument,
+ required_argument (or 1) if the option requires an argument,
+ optional_argument (or 2) if the option takes an optional argument.
+
+ If the field `flag' is not NULL, it points to a variable that is set
+ to the value given in the field `val' when the option is found, but
+ left unchanged if the option is not found.
+
+ To have a long-named option do something other than set an `int' to
+ a compiled-in constant, such as set a value from `optarg', set the
+ option's `flag' field to zero and its `val' field to a nonzero
+ value (the equivalent single-letter option character, if there is
+ one). For long options that have a zero `flag' field, `getopt'
+ returns the contents of the `val' field. */
+
+struct option
+{
+#if defined (THIS_IS__STDC__) && THIS_IS__STDC__
+ const char *name;
+#else
+ char *name;
+#endif
+ /* has_arg can't be an enum because some compilers complain about
+ type mismatches in all the code that assumes it is an int. */
+ int has_arg;
+ int *flag;
+ int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'. */
+
+#define no_argument 0
+#define required_argument 1
+#define optional_argument 2
+
+#endif /* #if !HAVE_DECL_GETOPT_LONG */
+
+#if defined (THIS_IS__STDC__) && THIS_IS__STDC__
+/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
+ undefined, we haven't run the autoconf check so provide the
+ declaration without arguments. If it is 0, we checked and failed
+ to find the declaration so provide a fully prototyped one. If it
+ is 1, we found it so don't provide any declaration at all. */
+#if defined (__GNU_LIBRARY__) || (defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT)
+/* Many other libraries have conflicting prototypes for getopt, with
+ differences in the consts, in stdlib.h. To avoid compilation
+ errors, only prototype getopt for the GNU C library. */
+extern int getopt (int argc, char *const *argv, const char *shortopts);
+#else /* not __GNU_LIBRARY__ */
+# if !defined (HAVE_DECL_GETOPT)
+extern int getopt ();
+# endif
+#endif /* __GNU_LIBRARY__ */
+#if !HAVE_DECL_GETOPT_LONG
+extern int getopt_long (int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind);
+extern int getopt_long_only (int argc, char *const *argv,
+ const char *shortopts,
+ const struct option *longopts, int *longind);
+
+/* Internal only. Users should not call this directly. */
+extern int _getopt_internal (int argc, char *const *argv,
+ const char *shortopts,
+ const struct option *longopts, int *longind,
+ int long_only);
+#endif /* HAVE_DECL_GETOPT_LONG */
+#else /* not THIS_IS__STDC__ */
+#if !HAVE_DECL_GETOPT
+extern int getopt ();
+#endif /* HAVE_DECL_GETOPT */
+#if !HAVE_DECL_GETOPT_LONG
+extern int getopt_long ();
+extern int getopt_long_only ();
+
+extern int _getopt_internal ();
+#endif /* HAVE_DECL_GETOPT_LONG */
+#endif /* THIS_IS__STDC__ */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* getopt.h */