greenplumn pg_getopt 源码
greenplumn pg_getopt 代码
文件路径：/src/include/pg_getopt.h
/*
* Postgres files that use getopt(3) always include this file.
* We must cope with three different scenarios:
* 1. We're using the platform's getopt(), and we should just import the
* appropriate declarations.
* 2. The platform lacks getopt(), and we must declare everything.
* 3. The platform has getopt(), but we're not using it because we don't
* like its behavior. The declarations we make here must be compatible
* with both the platform's getopt() and our src/port/getopt.c.
*
* Portions Copyright (c) 1987, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Portions Copyright (c) 2003-2019, PostgreSQL Global Development Group
*
* src/include/pg_getopt.h
*/
#ifndef PG_GETOPT_H
#define PG_GETOPT_H
/* POSIX says getopt() is provided by unistd.h */
#include <unistd.h>
/* rely on the system's getopt.h if present */
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
/*
* If we have <getopt.h>, assume it declares these variables, else do that
* ourselves. (We used to just declare them unconditionally, but Cygwin
* doesn't like that.)
*/
#ifndef HAVE_GETOPT_H
extern char *optarg;
extern int optind;
extern int opterr;
extern int optopt;
#endif /* HAVE_GETOPT_H */
/*
* Some platforms have optreset but fail to declare it in <getopt.h>, so cope.
* Cygwin, however, doesn't like this either.
*/
#if defined(HAVE_INT_OPTRESET) && !defined(__CYGWIN__)
extern int optreset;
#endif
/* Provide getopt() declaration if the platform doesn't have it */
#ifndef HAVE_GETOPT
extern int getopt(int nargc, char *const *nargv, const char *ostr);
#endif
#endif /* PG_GETOPT_H */
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦