mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-19 16:10:01 +00:00
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* FILE * interface to a struct __*printf_buffer.
|
|
Copyright (C) 2022-2024 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* Registered printf format specifier callbacks produce data via a
|
|
FILE * stream. struct __printf_buffer_as_file enables vfprintf to
|
|
create a suitable stdio stream. Likewise struct
|
|
__wprintf_buffer_as_file for vfwprintf. */
|
|
|
|
#ifndef PRINTF_BUFFER_AS_FILE_H
|
|
#define PRINTF_BUFFER_AS_FILE_H
|
|
|
|
#include <libio/libioP.h>
|
|
|
|
struct __printf_buffer;
|
|
|
|
struct __printf_buffer_as_file
|
|
{
|
|
/* Interface to libio. */
|
|
FILE stream;
|
|
const struct _IO_jump_t *vtable;
|
|
|
|
/* Pointer to the underlying buffer. */
|
|
struct __printf_buffer *next;
|
|
};
|
|
|
|
/* Initialization *FP so that data written to its FILE * stream ends
|
|
up in NEXT. */
|
|
void __printf_buffer_as_file_init (struct __printf_buffer_as_file *fp,
|
|
struct __printf_buffer *next)
|
|
attribute_hidden;
|
|
|
|
/* Returns the FILE * that can be used to write data to the
|
|
buffer. */
|
|
static inline FILE *
|
|
__printf_buffer_as_file_get (struct __printf_buffer_as_file *file)
|
|
{
|
|
return &file->stream;
|
|
}
|
|
|
|
/* Transfers all pending data from the FILE * to the underlying
|
|
buffer. Returns true if there have been no errors. */
|
|
bool __printf_buffer_as_file_terminate (struct __printf_buffer_as_file *)
|
|
attribute_hidden;
|
|
|
|
/* Wide variant follows. */
|
|
|
|
struct __wprintf_buffer;
|
|
struct __wprintf_buffer_as_file
|
|
{
|
|
/* Interface to libio. */
|
|
FILE stream;
|
|
const struct _IO_jump_t *vtable;
|
|
struct _IO_wide_data wide_stream;
|
|
|
|
/* Pointer to the underlying buffer. */
|
|
struct __wprintf_buffer *next;
|
|
};
|
|
|
|
void __wprintf_buffer_as_file_init (struct __wprintf_buffer_as_file *fp,
|
|
struct __wprintf_buffer *next)
|
|
attribute_hidden;
|
|
|
|
static inline FILE *
|
|
__wprintf_buffer_as_file_get (struct __wprintf_buffer_as_file *file)
|
|
{
|
|
return &file->stream;
|
|
}
|
|
|
|
bool __wprintf_buffer_as_file_terminate (struct __wprintf_buffer_as_file *)
|
|
attribute_hidden;
|
|
|
|
#endif /* PRINTF_BUFFER_AS_FILE_H */
|