mirror of
https://git.zap.org.au/git/trader.git
synced 2024-09-01 17:14:15 -04:00
These files have been created by running ./build-aux/bootstrap with Gnulib as at commit 99ce3a004a2974c71f510f5df5bc6be7e2811d30 (with a date stamp of Tue Jan 2 09:19:44 2024 -0800), Autoconf 2.71, Automake 1.16.5, Gettext 0.21 and pkgconf 1.8.1.
207 lines
7.4 KiB
C
207 lines
7.4 KiB
C
/* POSIX compatible FILE stream write function.
|
|
Copyright (C) 2008-2024 Free Software Foundation, Inc.
|
|
Written by Bruno Haible <bruno@clisp.org>, 2008.
|
|
|
|
This file is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation; either version 2.1 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This file 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include <stdio.h>
|
|
|
|
/* Replace these functions only if module 'nonblocking' or module 'sigpipe' is
|
|
requested. */
|
|
#if GNULIB_NONBLOCKING || GNULIB_SIGPIPE
|
|
|
|
/* On native Windows platforms, SIGPIPE does not exist. When write() is
|
|
called on a pipe with no readers, WriteFile() fails with error
|
|
GetLastError() = ERROR_NO_DATA, and write() in consequence fails with
|
|
error EINVAL. This write() function is at the basis of the function
|
|
which flushes the buffer of a FILE stream. */
|
|
|
|
# if defined _WIN32 && ! defined __CYGWIN__
|
|
|
|
# include <errno.h>
|
|
# include <signal.h>
|
|
# include <io.h>
|
|
|
|
# define WIN32_LEAN_AND_MEAN /* avoid including junk */
|
|
# include <windows.h>
|
|
|
|
# if GNULIB_MSVC_NOTHROW
|
|
# include "msvc-nothrow.h"
|
|
# else
|
|
# include <io.h>
|
|
# endif
|
|
|
|
/* Don't assume that UNICODE is not defined. */
|
|
# undef GetNamedPipeHandleState
|
|
# define GetNamedPipeHandleState GetNamedPipeHandleStateA
|
|
|
|
# if GNULIB_NONBLOCKING
|
|
# define CLEAR_ERRNO \
|
|
errno = 0;
|
|
# define HANDLE_ENOSPC \
|
|
if (errno == ENOSPC && ferror (stream)) \
|
|
{ \
|
|
int fd = fileno (stream); \
|
|
if (fd >= 0) \
|
|
{ \
|
|
HANDLE h = (HANDLE) _get_osfhandle (fd); \
|
|
if (GetFileType (h) == FILE_TYPE_PIPE) \
|
|
{ \
|
|
/* h is a pipe or socket. */ \
|
|
DWORD state; \
|
|
if (GetNamedPipeHandleState (h, &state, NULL, NULL, \
|
|
NULL, NULL, 0) \
|
|
&& (state & PIPE_NOWAIT) != 0) \
|
|
/* h is a pipe in non-blocking mode. \
|
|
Change errno from ENOSPC to EAGAIN. */ \
|
|
errno = EAGAIN; \
|
|
} \
|
|
} \
|
|
} \
|
|
else
|
|
# else
|
|
# define CLEAR_ERRNO
|
|
# define HANDLE_ENOSPC
|
|
# endif
|
|
|
|
# if GNULIB_SIGPIPE
|
|
# define CLEAR_LastError \
|
|
SetLastError (0);
|
|
# define HANDLE_ERROR_NO_DATA \
|
|
if (GetLastError () == ERROR_NO_DATA && ferror (stream)) \
|
|
{ \
|
|
int fd = fileno (stream); \
|
|
if (fd >= 0 \
|
|
&& GetFileType ((HANDLE) _get_osfhandle (fd)) \
|
|
== FILE_TYPE_PIPE) \
|
|
{ \
|
|
/* Try to raise signal SIGPIPE. */ \
|
|
raise (SIGPIPE); \
|
|
/* If it is currently blocked or ignored, change errno from \
|
|
EINVAL to EPIPE. */ \
|
|
errno = EPIPE; \
|
|
} \
|
|
} \
|
|
else
|
|
# else
|
|
# define CLEAR_LastError
|
|
# define HANDLE_ERROR_NO_DATA
|
|
# endif
|
|
|
|
# define CALL_WITH_SIGPIPE_EMULATION(RETTYPE, EXPRESSION, FAILED) \
|
|
if (ferror (stream)) \
|
|
return (EXPRESSION); \
|
|
else \
|
|
{ \
|
|
RETTYPE ret; \
|
|
CLEAR_ERRNO \
|
|
CLEAR_LastError \
|
|
ret = (EXPRESSION); \
|
|
if (FAILED) \
|
|
{ \
|
|
HANDLE_ENOSPC \
|
|
HANDLE_ERROR_NO_DATA \
|
|
; \
|
|
} \
|
|
return ret; \
|
|
}
|
|
|
|
# if !REPLACE_PRINTF_POSIX /* avoid collision with printf.c */
|
|
int
|
|
printf (const char *format, ...)
|
|
{
|
|
int retval;
|
|
va_list args;
|
|
|
|
va_start (args, format);
|
|
retval = vfprintf (stdout, format, args);
|
|
va_end (args);
|
|
|
|
return retval;
|
|
}
|
|
# endif
|
|
|
|
# if !REPLACE_FPRINTF_POSIX /* avoid collision with fprintf.c */
|
|
int
|
|
fprintf (FILE *stream, const char *format, ...)
|
|
{
|
|
int retval;
|
|
va_list args;
|
|
|
|
va_start (args, format);
|
|
retval = vfprintf (stream, format, args);
|
|
va_end (args);
|
|
|
|
return retval;
|
|
}
|
|
# endif
|
|
|
|
# if !REPLACE_VPRINTF_POSIX /* avoid collision with vprintf.c */
|
|
int
|
|
vprintf (const char *format, va_list args)
|
|
{
|
|
return vfprintf (stdout, format, args);
|
|
}
|
|
# endif
|
|
|
|
# if !REPLACE_VFPRINTF_POSIX /* avoid collision with vfprintf.c */
|
|
int
|
|
vfprintf (FILE *stream, const char *format, va_list args)
|
|
#undef vfprintf
|
|
{
|
|
CALL_WITH_SIGPIPE_EMULATION (int, vfprintf (stream, format, args), ret == EOF)
|
|
}
|
|
# endif
|
|
|
|
int
|
|
putchar (int c)
|
|
{
|
|
return fputc (c, stdout);
|
|
}
|
|
|
|
int
|
|
fputc (int c, FILE *stream)
|
|
#undef fputc
|
|
{
|
|
CALL_WITH_SIGPIPE_EMULATION (int, fputc (c, stream), ret == EOF)
|
|
}
|
|
|
|
int
|
|
fputs (const char *string, FILE *stream)
|
|
#undef fputs
|
|
{
|
|
CALL_WITH_SIGPIPE_EMULATION (int, fputs (string, stream), ret == EOF)
|
|
}
|
|
|
|
int
|
|
puts (const char *string)
|
|
#undef puts
|
|
{
|
|
FILE *stream = stdout;
|
|
CALL_WITH_SIGPIPE_EMULATION (int, puts (string), ret == EOF)
|
|
}
|
|
|
|
size_t
|
|
fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
|
|
#undef fwrite
|
|
{
|
|
CALL_WITH_SIGPIPE_EMULATION (size_t, fwrite (ptr, s, n, stream), ret < n)
|
|
}
|
|
|
|
# endif
|
|
#endif
|