/*-
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/*-
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* Copyright (c) 2002-2004 Tim J. Robbins.
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* Copyright (c) 2002-2004 Tim J. Robbins.
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* All rights reserved.
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* All rights reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* modification, are permitted provided that the following conditions
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* are met:
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* documentation and/or other materials provided with the distribution.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* SUCH DAMAGE.
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*/
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*/
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/*
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/*
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FUNCTION
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FUNCTION
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<<fgetws>>---get wide character string from a file or stream
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<<fgetws>>---get wide character string from a file or stream
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INDEX
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INDEX
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fgetws
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fgetws
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INDEX
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INDEX
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_fgetws_r
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_fgetws_r
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ANSI_SYNOPSIS
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ANSI_SYNOPSIS
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#include <wchar.h>
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#include <wchar.h>
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wchar_t *fgetws(wchar_t *<[ws]>, int <[n]>, FILE *<[fp]>);
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wchar_t *fgetws(wchar_t *<[ws]>, int <[n]>, FILE *<[fp]>);
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#include <wchar.h>
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#include <wchar.h>
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wchar_t *_fgetws_r(struct _reent *<[ptr]>, wchar_t *<[ws]>, int <[n]>, FILE *<[fp]>);
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wchar_t *_fgetws_r(struct _reent *<[ptr]>, wchar_t *<[ws]>, int <[n]>, FILE *<[fp]>);
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TRAD_SYNOPSIS
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TRAD_SYNOPSIS
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#include <wchar.h>
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#include <wchar.h>
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wchar_t *fgetws(<[ws]>,<[n]>,<[fp]>)
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wchar_t *fgetws(<[ws]>,<[n]>,<[fp]>)
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wchar_t *<[ws]>;
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wchar_t *<[ws]>;
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int <[n]>;
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int <[n]>;
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FILE *<[fp]>;
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FILE *<[fp]>;
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#include <wchar.h>
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#include <wchar.h>
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wchar_t *_fgetws_r(<[ptr]>, <[ws]>,<[n]>,<[fp]>)
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wchar_t *_fgetws_r(<[ptr]>, <[ws]>,<[n]>,<[fp]>)
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struct _reent *<[ptr]>;
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struct _reent *<[ptr]>;
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wchar_t *<[ws]>;
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wchar_t *<[ws]>;
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int <[n]>;
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int <[n]>;
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FILE *<[fp]>;
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FILE *<[fp]>;
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DESCRIPTION
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DESCRIPTION
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Reads at most <[n-1]> wide characters from <[fp]> until a newline
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Reads at most <[n-1]> wide characters from <[fp]> until a newline
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is found. The wide characters including to the newline are stored
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is found. The wide characters including to the newline are stored
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in <[ws]>. The buffer is terminated with a 0.
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in <[ws]>. The buffer is terminated with a 0.
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The <<_fgetws_r>> function is simply the reentrant version of
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The <<_fgetws_r>> function is simply the reentrant version of
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<<fgetws>> and is passed an additional reentrancy structure
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<<fgetws>> and is passed an additional reentrancy structure
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pointer: <[ptr]>.
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pointer: <[ptr]>.
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RETURNS
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RETURNS
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<<fgetws>> returns the buffer passed to it, with the data
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<<fgetws>> returns the buffer passed to it, with the data
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filled in. If end of file occurs with some data already
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filled in. If end of file occurs with some data already
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accumulated, the data is returned with no other indication. If
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accumulated, the data is returned with no other indication. If
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no data are read, NULL is returned instead.
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no data are read, NULL is returned instead.
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PORTABILITY
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PORTABILITY
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C99, POSIX.1-2001
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C99, POSIX.1-2001
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*/
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*/
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#include <_ansi.h>
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#include <_ansi.h>
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#include <reent.h>
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#include <reent.h>
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#include <errno.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <string.h>
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#include <string.h>
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#include <wchar.h>
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#include <wchar.h>
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#include "local.h"
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#include "local.h"
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wchar_t *
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wchar_t *
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_DEFUN(_fgetws_r, (ptr, ws, n, fp),
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_DEFUN(_fgetws_r, (ptr, ws, n, fp),
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struct _reent *ptr _AND
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struct _reent *ptr _AND
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wchar_t * ws _AND
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wchar_t * ws _AND
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int n _AND
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int n _AND
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FILE * fp)
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FILE * fp)
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{
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{
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wchar_t *wsp;
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wchar_t *wsp;
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size_t nconv;
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size_t nconv;
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const char *src;
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const char *src;
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unsigned char *nl;
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unsigned char *nl;
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_flockfile (fp);
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_flockfile (fp);
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ORIENT (fp, 1);
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ORIENT (fp, 1);
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if (n <= 0)
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if (n <= 0)
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{
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{
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errno = EINVAL;
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errno = EINVAL;
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goto error;
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goto error;
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}
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}
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if (fp->_r <= 0 && __srefill_r (ptr, fp))
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if (fp->_r <= 0 && __srefill_r (ptr, fp))
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/* EOF */
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/* EOF */
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goto error;
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goto error;
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wsp = ws;
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wsp = ws;
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do
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do
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{
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{
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src = fp->_p;
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src = fp->_p;
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nl = memchr (fp->_p, '\n', fp->_r);
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nl = memchr (fp->_p, '\n', fp->_r);
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nconv = _mbsrtowcs_r (ptr, wsp, &src,
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nconv = _mbsrtowcs_r (ptr, wsp, &src,
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nl != NULL ? (nl - fp->_p + 1) : fp->_r,
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nl != NULL ? (nl - fp->_p + 1) : fp->_r,
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&fp->_mbstate);
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&fp->_mbstate);
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if (nconv == (size_t) -1)
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if (nconv == (size_t) -1)
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/* Conversion error */
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/* Conversion error */
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goto error;
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goto error;
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if (src == NULL)
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if (src == NULL)
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{
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{
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/*
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/*
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* We hit a null byte. Increment the character count,
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* We hit a null byte. Increment the character count,
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* since mbsnrtowcs()'s return value doesn't include
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* since mbsnrtowcs()'s return value doesn't include
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* the terminating null, then resume conversion
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* the terminating null, then resume conversion
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* after the null.
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* after the null.
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*/
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*/
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nconv++;
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nconv++;
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src = memchr (fp->_p, '\0', fp->_r);
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src = memchr (fp->_p, '\0', fp->_r);
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src++;
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src++;
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}
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}
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fp->_r -= (unsigned char *) src - fp->_p;
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fp->_r -= (unsigned char *) src - fp->_p;
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fp->_p = (unsigned char *) src;
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fp->_p = (unsigned char *) src;
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n -= nconv;
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n -= nconv;
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wsp += nconv;
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wsp += nconv;
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}
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}
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while (wsp[-1] != L'\n' && n > 1 && (fp->_r > 0
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while (wsp[-1] != L'\n' && n > 1 && (fp->_r > 0
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|| __srefill_r (ptr, fp) == 0));
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|| __srefill_r (ptr, fp) == 0));
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if (wsp == ws)
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if (wsp == ws)
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/* EOF */
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/* EOF */
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goto error;
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goto error;
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if (!mbsinit (&fp->_mbstate))
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if (!mbsinit (&fp->_mbstate))
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/* Incomplete character */
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/* Incomplete character */
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goto error;
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goto error;
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*wsp++ = L'\0';
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*wsp++ = L'\0';
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_funlockfile (fp);
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_funlockfile (fp);
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return ws;
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return ws;
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error:
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error:
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_funlockfile (fp);
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_funlockfile (fp);
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return NULL;
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return NULL;
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}
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}
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wchar_t *
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wchar_t *
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_DEFUN(fgetws, (ws, n, fp),
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_DEFUN(fgetws, (ws, n, fp),
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wchar_t *ws _AND
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wchar_t *ws _AND
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int n _AND
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int n _AND
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FILE *fp)
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FILE *fp)
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{
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{
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CHECK_INIT (_REENT, fp);
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CHECK_INIT (_REENT, fp);
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return _fgetws_r (_REENT, ws, n, fp);
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return _fgetws_r (_REENT, ws, n, fp);
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}
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}
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