mpeg4ip_getopt.h
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:5k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- #ifdef WIN32
- #define HAVE_IN_PORT_T
- #define HAVE_SOCKLEN_T
- #else
- #include "../config.h"
- #endif
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #ifdef HAVE_GETOPT_H
- #include <getopt.h>
- #endif
- #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_LONG)
- #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. */
- 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;
- /* 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 __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 option'. */
- # define no_argument 0
- # define required_argument 1
- # define optional_argument 2
- #ifdef __cplusplus
- }
- #endif
- #endif
- #ifndef HAVE_GETOPT
- #ifdef __cplusplus
- extern "C" {
- #endif
- /* 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, `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 `optarg'.
- If a letter in OPTS is followed by two colons, its argument is
- optional. This behavior is specific to the GNU `getopt'.
- The argument `--' causes premature termination of argument
- scanning, explicitly telling `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
- `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);
- #ifdef __cplusplus
- }
- #endif
- #endif
- #ifndef HAVE_GETOPT_LONG
- #ifdef __cplusplus
- extern "C" {
- #endif
- 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);
- extern int _getopt_internal (int __argc, char *const *argv,
- const char *optstring,
- const struct option *longopts,
- int *longind, int long_only);
- #ifdef __cplusplus
- }
- #endif
- #endif