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Annotation of GNUtools/libg++/libio/iosetvbuf.c, revision 1.1

1.1     ! root        1: /* 
        !             2: Copyright (C) 1993 Free Software Foundation
        !             3: 
        !             4: This file is part of the GNU IO Library.  This library is free
        !             5: software; you can redistribute it and/or modify it under the
        !             6: terms of the GNU General Public License as published by the
        !             7: Free Software Foundation; either version 2, or (at your option)
        !             8: any later version.
        !             9: 
        !            10: This library is distributed in the hope that it will be useful,
        !            11: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            13: GNU General Public License for more details.
        !            14: 
        !            15: You should have received a copy of the GNU General Public License
        !            16: along with GNU CC; see the file COPYING.  If not, write to
        !            17: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            18: 
        !            19: As a special exception, if you link this library with files
        !            20: compiled with a GNU compiler to produce an executable, this does not cause
        !            21: the resulting executable to be covered by the GNU General Public License.
        !            22: This exception does not however invalidate any other reasons why
        !            23: the executable file might be covered by the GNU General Public License. */
        !            24: 
        !            25: #include "libioP.h"
        !            26: 
        !            27: #define _IOFBF 0 /* Fully buffered. */
        !            28: #define _IOLBF 1 /* Line buffered. */
        !            29: #define _IONBF 2 /* No buffering. */
        !            30: 
        !            31: int
        !            32: _IO_setvbuf(fp, buf, mode, size)
        !            33:      _IO_FILE* fp;
        !            34:      char* buf;
        !            35:      int mode;
        !            36:      _IO_size_t size;
        !            37: {
        !            38:   COERCE_FILE(fp);
        !            39:   switch (mode)
        !            40:     {
        !            41:     case _IOFBF:
        !            42:       fp->_IO_file_flags &= ~_IO_LINE_BUF;
        !            43:       if (buf == NULL)
        !            44:        return 0;
        !            45:       return fp->_jumps->__setbuf(fp, buf, size);
        !            46:     case _IOLBF:
        !            47:       fp->_IO_file_flags |= _IO_LINE_BUF;
        !            48:       if (buf == NULL)
        !            49:        return 0;
        !            50:       return fp->_jumps->__setbuf(fp, buf, size);
        !            51:     case _IONBF:
        !            52:       return fp->_jumps->__setbuf(fp, NULL, 0);
        !            53:     default:
        !            54:       return EOF;
        !            55:     }
        !            56: }

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