145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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/*
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FUNCTION
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<<fputs>>, <<fputs_unlocked>>---write a character string in a file or stream
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INDEX
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fputs
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INDEX
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fputs_unlocked
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INDEX
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_fputs_r
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INDEX
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_fputs_unlocked_r
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SYNOPSIS
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#include <stdio.h>
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int fputs(const char *restrict <[s]>, FILE *restrict <[fp]>);
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#define _GNU_SOURCE
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#include <stdio.h>
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int fputs_unlocked(const char *restrict <[s]>, FILE *restrict <[fp]>);
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#include <stdio.h>
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int _fputs_r(struct _reent *<[ptr]>, const char *restrict <[s]>, FILE *restrict <[fp]>);
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#include <stdio.h>
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int _fputs_unlocked_r(struct _reent *<[ptr]>, const char *restrict <[s]>, FILE *restrict <[fp]>);
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DESCRIPTION
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<<fputs>> writes the string at <[s]> (but without the trailing null)
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to the file or stream identified by <[fp]>.
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<<fputs_unlocked>> is a non-thread-safe version of <<fputs>>.
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<<fputs_unlocked>> may only safely be used within a scope
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protected by flockfile() (or ftrylockfile()) and funlockfile(). This
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function may safely be used in a multi-threaded program if and only
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if they are called while the invoking thread owns the (FILE *)
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object, as is the case after a successful call to the flockfile() or
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ftrylockfile() functions. If threads are disabled, then
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<<fputs_unlocked>> is equivalent to <<fputs>>.
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<<_fputs_r>> and <<_fputs_unlocked_r>> are simply reentrant versions of the
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above that take an additional reentrant struct pointer argument: <[ptr]>.
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RETURNS
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If successful, the result is <<0>>; otherwise, the result is <<EOF>>.
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PORTABILITY
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ANSI C requires <<fputs>>, but does not specify that the result on
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success must be <<0>>; any non-negative value is permitted.
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<<fputs_unlocked>> is a GNU extension.
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
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*/
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#include <_ansi.h>
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#include <stdio.h>
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#include <string.h>
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#include "fvwrite.h"
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#include "local.h"
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#ifdef __IMPL_UNLOCKED__
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#define _fputs_r _fputs_unlocked_r
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#define fputs fputs_unlocked
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#endif
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/*
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* Write the given string to the given file.
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*/
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int
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_DEFUN(_fputs_r, (ptr, s, fp),
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struct _reent * ptr _AND
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char _CONST *__restrict s _AND
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FILE *__restrict fp)
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{
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#ifdef _FVWRITE_IN_STREAMIO
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int result;
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struct __suio uio;
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struct __siov iov;
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iov.iov_base = s;
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iov.iov_len = uio.uio_resid = strlen (s);
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uio.uio_iov = &iov;
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uio.uio_iovcnt = 1;
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CHECK_INIT(ptr, fp);
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_newlib_flockfile_start (fp);
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ORIENT (fp, -1);
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result = __sfvwrite_r (ptr, fp, &uio);
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_newlib_flockfile_end (fp);
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return result;
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#else
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_CONST char *p = s;
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CHECK_INIT(ptr, fp);
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_newlib_flockfile_start (fp);
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ORIENT (fp, -1);
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/* Make sure we can write. */
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if (cantwrite (ptr, fp))
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goto error;
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while (*p)
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{
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if (__sputc_r (ptr, *p++, fp) == EOF)
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goto error;
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}
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_newlib_flockfile_exit (fp);
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return 0;
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error:
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_newlib_flockfile_end (fp);
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return EOF;
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#endif
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}
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#ifndef _REENT_ONLY
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int
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_DEFUN(fputs, (s, fp),
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char _CONST *__restrict s _AND
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FILE *__restrict fp)
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{
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return _fputs_r (_REENT, s, fp);
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}
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#endif /* !_REENT_ONLY */
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