130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
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/* Copyright 2005 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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vdprintf
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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 *<[format]>, ...);
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int vdprintf(int <[fd]>, const char *<[format]>, va_list <[ap]>);
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int _dprintf_r(struct _reent *<[ptr]>, int <[fd]>,
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const char *<[format]>, ...);
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int _vdprintf_r(struct _reent *<[ptr]>, int <[fd]>,
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const char *<[format]>, va_list <[ap]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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#include <varargs.h>
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int dprintf(<[fd]>, <[format]> [, <[arg]>, ...])
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int <[fd]>;
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char *<[format]>;
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int vdprintf(<[fd]>, <[fmt]>, <[list]>)
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int <[fd]>;
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char *<[fmt]>;
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va_list <[list]>;
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int _dprintf_r(<[ptr]>, <[fd]>, <[format]> [, <[arg]>, ...])
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struct _reent *<[ptr]>;
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int <[fd]>;
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char *<[format]>;
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int _vdprintf_r(<[ptr]>, <[fd]>, <[fmt]>, <[list]>)
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struct _reent *<[ptr]>;
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int <[fd]>;
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char *<[fmt]>;
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va_list <[list]>;
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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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#ifdef _HAVE_STDC
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#ifdef _HAVE_STDC
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int
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_dprintf_r(struct _reent *ptr, int fd, _CONST char *format, ...)
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#else
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int
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_dprintf_r(ptr, fd, format, va_alist)
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struct _reent *ptr;
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int fd;
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char *format;
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va_dcl
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#endif
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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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#ifdef _HAVE_STDC
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va_start (ap, format);
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#else
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va_start (ap);
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#endif
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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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#ifndef _REENT_ONLY
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#ifdef _HAVE_STDC
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int
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dprintf(int fd, _CONST char *format, ...)
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#else
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int
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dprintf(fd, format, va_alist)
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struct _reent *ptr;
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int fd;
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char *format;
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va_dcl
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#endif
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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 (_REENT);
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#ifdef _HAVE_STDC
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va_start (ap, format);
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#else
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va_start (ap);
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#endif
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n = _vdprintf_r (_REENT, fd, format, ap);
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va_end (ap);
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return n;
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}
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#endif /* ! _REENT_ONLY */
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