path: root/getopt.h
diff options
authorGilbert Ramirez <gram@alumni.rice.edu>2000-03-28 20:20:11 +0000
committerGilbert Ramirez <gram@alumni.rice.edu>2000-03-28 20:20:11 +0000
commitc317b042a8e3ecb1fc973ed1ea50793dda057bde (patch)
treece47426a23e1b82bbcf72f23556a8e4d14484b4b /getopt.h
parente38645134590c8a82bad7b5e2987bcff662fac6f (diff)
Add getopt.c (from GNU libc) for use on Win32.
Ethereal/win32 now supports command-line options. Tethereal now compiles on win32, except for the fact that I haven't put the Makefile.nmake changes in for that yet. svn path=/trunk/; revision=1758
Diffstat (limited to 'getopt.h')
1 files changed, 129 insertions, 0 deletions
diff --git a/getopt.h b/getopt.h
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+++ b/getopt.h
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+/* Declarations for getopt.
+ Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ 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
+ 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+#ifndef _GETOPT_H
+#define _GETOPT_H 1
+#ifdef __cplusplus
+extern "C" {
+/* 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 EOF, 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;
+/* 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 __STDC__
+ const char *name;
+ char *name;
+ /* 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
+#if __STDC__
+#if defined(__GNU_LIBRARY__)
+/* 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__ */
+extern int getopt ();
+#endif /* not __GNU_LIBRARY__ */
+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);
+#else /* not __STDC__ */
+extern int getopt ();
+extern int getopt_long ();
+extern int getopt_long_only ();
+extern int _getopt_internal ();
+#endif /* not __STDC__ */
+#ifdef __cplusplus
+#endif /* _GETOPT_H */