postgresql/src/interfaces/libpq/win32.h

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#include <winsock.h>
/*
* strcasecmp() is not in Windows, stricmp is, though
*/
#define strcasecmp(a,b) stricmp(a,b)
#define strncasecmp(a,b,c) _strnicmp(a,b,c)
/*
* Some other compat functions
*/
#define open(a,b,c) _open(a,b,c)
#define close(a) _close(a)
#define read(a,b,c) _read(a,b,c)
#define write(a,b,c) _write(a,b,c)
#define popen(a,b) _popen(a,b)
#define pclose(a) _pclose(a)
#define vsnprintf(a,b,c,d) _vsnprintf(a,b,c,d)
#define snprintf _snprintf
/*
* crypt not available (yet)
*/
#define crypt(a,b) (a)
/*
* Most of libpq uses "errno" to access error conditions from socket calls,
* so on Windows we want to redirect those usages to WSAGetLastError().
* Rather than #ifdef'ing every single place that has "errno", hack it up
* with a macro instead. But there are a few places that do need to touch
* the regular errno variable. For them, we #undef and then redefine errno.
*/
#define errno WSAGetLastError()
#undef EAGAIN /* doesn't apply on sockets */
#undef EINTR
#define EINTR WSAEINTR
#define EWOULDBLOCK WSAEWOULDBLOCK
#define ECONNRESET WSAECONNRESET
#define EINPROGRESS WSAEINPROGRESS