getopt.h
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上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:7k
源码类别:
Windows CE
开发平台:
C/C++
- /*
- NOTE:
- I cannot get the vanilla getopt code to work (i.e. compile only what
- is needed and not duplicate symbols found in the standard library)
- on all the platforms that FLAC supports. In particular the gating
- of code with the ELIDE_CODE #define is not accurate enough on systems
- that are POSIX but not glibc. If someone has a patch that works on
- GNU/Linux, Darwin, AND Solaris please submit it on the project page:
- http://sourceforge.net/projects/flac
- In the meantime I have munged the global symbols and remove gates
- around code, while at the same time trying to touch the original as
- little as possible.
- */
- /* Declarations for getopt.
- Copyright (C) 1989,90,91,92,93,94,96,97,98 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
- The GNU C Library 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
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
- #ifndef SHARE__GETOPT_H
- #define SHARE__GETOPT_H
- /*[JEC] was:#ifndef __need_getopt*/
- /*[JEC] was:# define _GETOPT_H 1*/
- /*[JEC] was:#endif*/
- #ifdef __cplusplus
- extern "C" {
- #endif
- /* For communication from `share__getopt' to the caller.
- When `share__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 *share__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 `share__getopt'.
- On entry to `share__getopt', zero means this is the first call; initialize.
- When `share__getopt' returns -1, this is the index of the first of the
- non-option elements that the caller should itself scan.
- Otherwise, `share__optind' communicates from one call to the next
- how much of ARGV has been scanned so far. */
- extern int share__optind;
- /* Callers store zero here to inhibit the error message `share__getopt' prints
- for unrecognized options. */
- extern int share__opterr;
- /* Set to an option character which was unrecognized. */
- extern int share__optopt;
- /*[JEC] was:#ifndef __need_getopt */
- /* Describe the long-named options requested by the application.
- The LONG_OPTIONS argument to share__getopt_long or share__getopt_long_only is a vector
- of `struct share__option' terminated by an element containing a name which is
- zero.
- The field `has_arg' is:
- share__no_argument (or 0) if the option does not take an argument,
- share__required_argument (or 1) if the option requires an argument,
- share__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 `share__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, `share__getopt'
- returns the contents of the `val' field. */
- struct share__option
- {
- # if defined __STDC__ && __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 share__option'. */
- # define share__no_argument 0
- # define share__required_argument 1
- # define share__optional_argument 2
- /*[JEC] was:#endif*/ /* need getopt */
- /* Get definitions and prototypes for functions to process the
- arguments in ARGV (ARGC of them, minus the program name) for
- options given in OPTS.
- Return the option character from OPTS just read. Return -1 when
- there are no more options. For unrecognized options, or options
- missing arguments, `share__optopt' is set to the option letter, and '?' is
- returned.
- The OPTS string is a list of characters which are recognized option
- letters, optionally followed by colons, specifying that that letter
- takes an argument, to be placed in `share__optarg'.
- If a letter in OPTS is followed by two colons, its argument is
- optional. This behavior is specific to the GNU `share__getopt'.
- The argument `--' causes premature termination of argument
- scanning, explicitly telling `share__getopt' that there are no more
- options.
- If OPTS begins with `--', then non-option arguments are treated as
- arguments to the option ' '. This behavior is specific to the GNU
- `share__getopt'. */
- /*[JEC] was:#if defined __STDC__ && __STDC__*/
- /*[JEC] was:# 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 share__getopt (int argc, char *const *argv, const char *shortopts);
- /*[JEC] was:# else*/ /* not __GNU_LIBRARY__ */
- /*[JEC] was:extern int getopt ();*/
- /*[JEC] was:# endif*/ /* __GNU_LIBRARY__ */
- /*[JEC] was:# ifndef __need_getopt*/
- extern int share__getopt_long (int argc, char *const *argv, const char *shortopts,
- const struct share__option *longopts, int *longind);
- extern int share__getopt_long_only (int argc, char *const *argv,
- const char *shortopts,
- const struct share__option *longopts, int *longind);
- /* Internal only. Users should not call this directly. */
- extern int share___getopt_internal (int argc, char *const *argv,
- const char *shortopts,
- const struct share__option *longopts, int *longind,
- int long_only);
- /*[JEC] was:# endif*/
- /*[JEC] was:#else*/ /* not __STDC__ */
- /*[JEC] was:extern int getopt ();*/
- /*[JEC] was:# ifndef __need_getopt*/
- /*[JEC] was:extern int getopt_long ();*/
- /*[JEC] was:extern int getopt_long_only ();*/
- /*[JEC] was:extern int _getopt_internal ();*/
- /*[JEC] was:# endif*/
- /*[JEC] was:#endif*/ /* __STDC__ */
- #ifdef __cplusplus
- }
- #endif
- /* Make sure we later can get all the definitions and declarations. */
- /*[JEC] was:#undef __need_getopt*/
- #endif /* getopt.h */