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glibc/libio/strfile.h
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/* Copyright (C) 1993-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. | |
As a special exception, if you link the code in this file with | |
files compiled with a GNU compiler to produce an executable, | |
that does not cause the resulting executable to be covered by | |
the GNU Lesser General Public License. This exception does not | |
however invalidate any other reasons why the executable file | |
might be covered by the GNU Lesser General Public License. | |
This exception applies to code released by its copyright holders | |
in files containing the exception. */ | |
#include <libio.h> | |
#ifdef TODO | |
Merge into libio.h ? | |
#endif | |
typedef void *(*_IO_alloc_type) (_IO_size_t); | |
typedef void (*_IO_free_type) (void*); | |
struct _IO_str_fields | |
{ | |
_IO_alloc_type _allocate_buffer; | |
_IO_free_type _free_buffer; | |
}; | |
/* This is needed for the Irix6 N32 ABI, which has a 64 bit off_t type, | |
but a 32 bit pointer type. In this case, we get 4 bytes of padding | |
after the vtable pointer. Putting them in a structure together solves | |
this problem. */ | |
struct _IO_streambuf | |
{ | |
struct _IO_FILE _f; | |
const struct _IO_jump_t *vtable; | |
}; | |
typedef struct _IO_strfile_ | |
{ | |
struct _IO_streambuf _sbf; | |
struct _IO_str_fields _s; | |
} _IO_strfile; | |
/* dynamic: set when the array object is allocated (or reallocated) as | |
necessary to hold a character sequence that can change in length. */ | |
#define _IO_STR_DYNAMIC(FP) ((FP)->_s._allocate_buffer != (_IO_alloc_type)0) | |
/* frozen: set when the program has requested that the array object not | |
be altered, reallocated, or freed. */ | |
#define _IO_STR_FROZEN(FP) ((FP)->_f._IO_file_flags & _IO_USER_BUF) | |
typedef struct | |
{ | |
_IO_strfile f; | |
/* This is used for the characters which do not fit in the buffer | |
provided by the user. */ | |
char overflow_buf[64]; | |
} _IO_strnfile; | |
extern const struct _IO_jump_t _IO_strn_jumps attribute_hidden; | |
typedef struct | |
{ | |
_IO_strfile f; | |
/* This is used for the characters which do not fit in the buffer | |
provided by the user. */ | |
wchar_t overflow_buf[64]; | |
} _IO_wstrnfile; | |
extern const struct _IO_jump_t _IO_wstrn_jumps attribute_hidden; |