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-rw-r--r--libio/iofgetws.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/libio/iofgetws.c b/libio/iofgetws.c
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+++ b/libio/iofgetws.c
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+/* Copyright (C) 1993, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
+ This file is part of the GNU IO Library.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ This library 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this library; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, if you link this library with files
+ compiled with a GNU compiler to produce an executable, this does
+ not cause the resulting executable to be covered by the GNU General
+ Public License. This exception does not however invalidate any
+ other reasons why the executable file might be covered by the GNU
+ General Public License. */
+
+#include "libioP.h"
+#include <wchar.h>
+
+wchar_t *
+fgetws (buf, n, fp)
+ wchar_t *buf;
+ int n;
+ _IO_FILE *fp;
+{
+ _IO_size_t count;
+ wchar_t *result;
+ int old_error;
+ CHECK_FILE (fp, NULL);
+ if (n <= 0)
+ return NULL;
+ _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+ _IO_flockfile (fp);
+ /* This is very tricky since a file descriptor may be in the
+ non-blocking mode. The error flag doesn't mean much in this
+ case. We return an error only when there is a new error. */
+ old_error = fp->_IO_file_flags & _IO_ERR_SEEN;
+ fp->_IO_file_flags &= ~_IO_ERR_SEEN;
+ count = _IO_getwline (fp, buf, n - 1, L'\n', 1);
+ /* If we read in some bytes and errno is EAGAIN, that error will
+ be reported for next read. */
+ if (count == 0 || ((fp->_IO_file_flags & _IO_ERR_SEEN)
+ && errno != EAGAIN))
+ result = NULL;
+ else
+ {
+ buf[count] = '\0';
+ result = buf;
+ }
+ fp->_IO_file_flags |= old_error;
+ _IO_funlockfile (fp);
+ _IO_cleanup_region_end (0);
+ return result;
+}