114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
/* Copyright (C) 1993-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>.
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As a special exception, if you link the code in this file with
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files compiled with a GNU compiler to produce an executable,
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that does not cause the resulting executable to be covered by
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the GNU Lesser General Public License. This exception does not
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however invalidate any other reasons why the executable file
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might be covered by the GNU Lesser General Public License.
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This exception applies to code released by its copyright holders
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in files containing the exception. */
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#ifndef STRFILE_H_
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#define STRFILE_H_
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#include "libioP.h"
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typedef void *(*_IO_alloc_type) (size_t);
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typedef void (*_IO_free_type) (void*);
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struct _IO_str_fields
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{
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/* These members are preserved for ABI compatibility. The glibc
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implementation always calls malloc/free for user buffers if
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_IO_USER_BUF or _IO_FLAGS2_USER_WBUF are not set. */
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_IO_alloc_type _allocate_buffer_unused;
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_IO_free_type _free_buffer_unused;
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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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FILE _f;
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const struct _IO_jump_t *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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/* 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._flags & _IO_USER_BUF)
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typedef struct
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{
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_IO_strfile f;
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/* This is used for the characters which do not fit in the buffer
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provided by the user. */
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char overflow_buf[64];
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} _IO_strnfile;
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extern const struct _IO_jump_t _IO_strn_jumps attribute_hidden;
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typedef struct
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{
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_IO_strfile f;
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/* This is used for the characters which do not fit in the buffer
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provided by the user. */
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wchar_t overflow_buf[64];
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} _IO_wstrnfile;
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extern const struct _IO_jump_t _IO_wstrn_jumps attribute_hidden;
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/* Initialize an _IO_strfile SF to read from narrow string STRING, and
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return the corresponding FILE object. It is not necessary to fclose
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the FILE when it is no longer needed. */
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static inline FILE *
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_IO_strfile_read (_IO_strfile *sf, const char *string)
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{
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sf->_sbf._f._lock = NULL;
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_IO_no_init (&sf->_sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
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_IO_JUMPS (&sf->_sbf) = &_IO_str_jumps;
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_IO_str_init_static_internal (sf, (char*)string, 0, NULL);
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return &sf->_sbf._f;
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}
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/* Initialize an _IO_strfile SF and _IO_wide_data WD to read from wide
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string STRING, and return the corresponding FILE object. It is not
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necessary to fclose the FILE when it is no longer needed. */
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static inline FILE *
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_IO_strfile_readw (_IO_strfile *sf, struct _IO_wide_data *wd,
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const wchar_t *string)
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{
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sf->_sbf._f._lock = NULL;
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_IO_no_init (&sf->_sbf._f, _IO_USER_LOCK, 0, wd, &_IO_wstr_jumps);
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_IO_fwide (&sf->_sbf._f, 1);
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_IO_wstr_init_static (&sf->_sbf._f, (wchar_t *)string, 0, NULL);
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return &sf->_sbf._f;
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}
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#endif /* strfile.h. */
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