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Annotation of GNUtools/libg++/libio/iosetvbuf.c, revision 1.1.1.1

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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