+#ifndef TINC_GETOPT_H
+#define TINC_GETOPT_H
+
/* Declarations for getopt.
Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#ifndef _GETOPT_H
-#define _GETOPT_H 1
-
-#ifdef __cplusplus
+#ifdef cplusplus
extern "C" {
#endif
-/* 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. */
+ /* 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;
+ 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'.
+ /* 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.
+ 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.
+ 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. */
+ Otherwise, `optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
-extern int optind;
+ extern int optind;
-/* Callers store zero here to inhibit the error message `getopt' prints
- for unrecognized options. */
+ /* Callers store zero here to inhibit the error message `getopt' prints
+ for unrecognized options. */
-extern int opterr;
+ extern int opterr;
-/* Set to an option character which was unrecognized. */
+ /* Set to an option character which was unrecognized. */
-extern int optopt;
+ 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.
+ /* 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.
+ 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.
+ 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. */
+ 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
-{
+ struct option {
#if defined (__STDC__) && __STDC__
- const char *name;
+ const char *name;
#else
- char *name;
+ 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;
-};
+ /* 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'. */
+ /* Names for the values of the `has_arg' field of `struct option'. */
-#define no_argument 0
-#define required_argument 1
-#define optional_argument 2
+#define no_argument 0
+#define required_argument 1
+#define optional_argument 2
#if defined (__STDC__) && __STDC__
#ifdef __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);
+ /* 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 ();
+ extern int getopt();
#endif /* __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);
+ 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();
+ extern int getopt_long();
+ extern int getopt_long_only();
-extern int _getopt_internal ();
+ extern int _getopt_internal();
#endif /* __STDC__ */
-#ifdef __cplusplus
+#ifdef cplusplus
}
#endif
-#endif /* _GETOPT_H */
+#endif
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