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63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
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/*
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Copyright (C) 1993 Free Software Foundation
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This file is part of the GNU IO Library. This library is free
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software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option)
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any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this library; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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As a special exception, if you link this library with files
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compiled with a GNU compiler to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#include <libio.h>
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#ifdef TODO
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Merge into libio.h ?
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#endif
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typedef void *(*_IO_alloc_type) __P((_IO_size_t));
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typedef void (*_IO_free_type) __P((void*));
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struct _IO_str_fields
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{
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_IO_alloc_type _allocate_buffer;
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_IO_free_type _free_buffer;
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};
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/* This is needed for the Irix6 N32 ABI, which has a 64 bit off_t type,
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but a 32 bit pointer type. In this case, we get 4 bytes of padding
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after the vtable pointer. Putting them in a structure together solves
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this problem. */
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struct _IO_streambuf
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{
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struct _IO_FILE _f;
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const void *_vtable;
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};
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typedef struct _IO_strfile_
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{
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struct _IO_streambuf _sbf;
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struct _IO_str_fields _s;
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} _IO_strfile;
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/* dynamic: set when the array object is allocated (or reallocated) as
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necessary to hold a character sequence that can change in length. */
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#define _IO_STR_DYNAMIC(FP) ((FP)->_s._allocate_buffer != (_IO_alloc_type)0)
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/* frozen: set when the program has requested that the array object not
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be altered, reallocated, or freed. */
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#define _IO_STR_FROZEN(FP) ((FP)->_f._IO_file_flags & _IO_USER_BUF)
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