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/****************************************************************************
* lib/lib_internal.h
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __LIB_INTERNAL_H
#define __LIB_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <semaphore.h>
/****************************************************************************
* Definitions
****************************************************************************/
#ifndef CONFIG_LIB_HOMEDIR
# define CONFIG_LIB_HOMEDIR "/"
#endif
#if CONFIG_STDIO_BUFFER_SIZE <= 0
# define lib_sem_initialize(s)
# define lib_take_semaphore(s)
# define lib_give_semaphore(s)
#endif
#define LIB_BUFLEN_UNKNOWN (0x7fffffff)
/****************************************************************************
* Public Types
****************************************************************************/
/* This is the generic for of a stream used by the library
* to manage variable sized output.
*/
struct lib_stream_s;
typedef void (*lib_putc_t)(struct lib_stream_s *this, int ch);
struct lib_stream_s
{
lib_putc_t put; /* Pointer to function to put one character */
int nput; /* Total number of characters put. Written
* by put method, readable by user */
};
struct lib_memstream_s
{
struct lib_stream_s public;
char *buffer; /* Address of first byte in the buffer */
int buflen; /* Size of the buffer in bytes */
};
struct lib_stdstream_s
{
struct lib_stream_s public;
FILE *stream;
};
struct lib_rawstream_s
{
struct lib_stream_s public;
int fd;
};
/****************************************************************************
* Public Variables
****************************************************************************/
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* Defined in lib_streamsem.c */
#if CONFIG_NFILE_STREAMS > 0
extern void stream_semtake(FAR struct streamlist *list);
extern void stream_semgive(FAR struct streamlist *list);
#endif
/* Defined in lib_memstream.c */
extern void lib_memstream(struct lib_memstream_s *memstream,
char *bufstart, int buflen);
/* Defined in lib_stdstream.c */
extern void lib_stdstream(struct lib_stdstream_s *stdstream,
FILE *stream);
/* Defined in lib_rawstream.c */
extern void lib_rawstream(struct lib_rawstream_s *rawstream,
int fd);
/* Defined in lib_lowstream.c */
#ifdef CONFIG_ARCH_LOWPUTC
extern void lib_lowstream(struct lib_stream_s *rawstream);
#endif
/* Defined in lib_nullstream.c */
extern void lib_nullstream(struct lib_stream_s *nullstream);
/* Defined in lib_libsprintf.c */
extern int lib_sprintf (struct lib_stream_s *obj,
const char *fmt, ...);
/* Defined lib_libvsprintf.c */
extern int lib_vsprintf(struct lib_stream_s *obj,
const char *src, va_list ap);
/* Defined lib_rawprintf.c */
extern int lib_rawvprintf(const char *src, va_list ap);
/* Defined lib_lowprintf.c */
extern int lib_lowvprintf(const char *src, va_list ap);
/* Defined in lib_libwrite.c */
extern ssize_t lib_fwrite(const void *ptr, size_t count, FILE *stream);
/* Defined in lib_libfread.c */
extern ssize_t lib_fread(void *ptr, size_t count, FILE *stream);
/* Defined in lib_libfflush.c */
extern ssize_t lib_fflush(FILE *stream, boolean bforce);
/* Defined in lib_rdflush.c */
extern int lib_rdflush(FILE *stream);
/* Defined in lib_wrflush.c */
int lib_wrflush(FILE *stream);
/* Defined in lib_sem.c */
#if CONFIG_STDIO_BUFFER_SIZE > 0
extern void lib_sem_initialize(FAR struct file_struct *stream);
extern void lib_take_semaphore(FAR struct file_struct *stream);
extern void lib_give_semaphore(FAR struct file_struct *stream);
#endif
/* Defined in lib_libgetbase.c */
extern int lib_getbase(const char *nptr, const char **endptr);
#endif /* __LIB_INTERNAL_H */
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