100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/* Copyright 2005, 2007 Shaun Jackman
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* Permission to use, copy, modify, and distribute this software
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* is freely granted, provided that this notice is preserved.
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*/
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/*
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FUNCTION
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<<dprintf>>, <<vdprintf>>---print to a file descriptor
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INDEX
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dprintf
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INDEX
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_dprintf_r
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INDEX
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vdprintf
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INDEX
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_vdprintf_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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#include <stdarg.h>
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int dprintf(int <[fd]>, const char *restrict <[format]>, ...);
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int vdprintf(int <[fd]>, const char *restrict <[format]>,
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va_list <[ap]>);
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int _dprintf_r(struct _reent *<[ptr]>, int <[fd]>,
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const char *restrict <[format]>, ...);
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int _vdprintf_r(struct _reent *<[ptr]>, int <[fd]>,
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const char *restrict <[format]>, va_list <[ap]>);
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DESCRIPTION
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<<dprintf>> and <<vdprintf>> allow printing a format, similarly to
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<<printf>>, but write to a file descriptor instead of to a <<FILE>>
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stream.
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The functions <<_dprintf_r>> and <<_vdprintf_r>> are simply
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reentrant versions of the functions above.
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RETURNS
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The return value and errors are exactly as for <<write>>, except that
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<<errno>> may also be set to <<ENOMEM>> if the heap is exhausted.
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PORTABILITY
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This function is originally a GNU extension in glibc and is not portable.
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Supporting OS subroutines required: <<sbrk>>, <<write>>.
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*/
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include "local.h"
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int
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_DEFUN(_dprintf_r, (ptr, fd, format),
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struct _reent *ptr _AND
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int fd _AND
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const char *__restrict format _DOTS)
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{
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va_list ap;
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int n;
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_REENT_SMALL_CHECK_INIT (ptr);
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va_start (ap, format);
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n = _vdprintf_r (ptr, fd, format, ap);
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va_end (ap);
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return n;
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}
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#ifdef _NANO_FORMATTED_IO
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int
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_EXFUN(_diprintf_r, (struct _reent *, int, const char *, ...)
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_ATTRIBUTE ((__alias__("_dprintf_r"))));
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#endif
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#ifndef _REENT_ONLY
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int
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_DEFUN(dprintf, (fd, format),
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int fd _AND
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const char *__restrict format _DOTS)
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{
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va_list ap;
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int n;
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struct _reent *ptr = _REENT;
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_REENT_SMALL_CHECK_INIT (ptr);
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va_start (ap, format);
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n = _vdprintf_r (ptr, fd, format, ap);
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va_end (ap);
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return n;
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}
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#ifdef _NANO_FORMATTED_IO
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int
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_EXFUN(diprintf, (int, const char *, ...)
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_ATTRIBUTE ((__alias__("dprintf"))));
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#endif
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#endif /* ! _REENT_ONLY */
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