codezero/conts/libc/include/stdio.h

/*
 * Australian Public Licence B (OZPLB)
 * 
 * Version 1-0
 * 
 * Copyright (c) 2004 National ICT Australia
 * 
 * All rights reserved. 
 * 
 * Developed by: Embedded, Real-time and Operating Systems Program (ERTOS)
 *               National ICT Australia
 *               http://www.ertos.nicta.com.au
 * 
 * Permission is granted by National ICT Australia, free of charge, to
 * any person obtaining a copy of this software and any associated
 * documentation files (the "Software") to deal with the Software without
 * restriction, including (without limitation) the rights to use, copy,
 * modify, adapt, merge, publish, distribute, communicate to the public,
 * sublicense, and/or sell, lend or rent out copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject
 * to the following conditions:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimers.
 * 
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimers in the documentation and/or other materials provided
 *       with the distribution.
 * 
 *     * Neither the name of National ICT Australia, nor the names of its
 *       contributors, may be used to endorse or promote products derived
 *       from this Software without specific prior written permission.
 * 
 * EXCEPT AS EXPRESSLY STATED IN THIS LICENCE AND TO THE FULL EXTENT
 * PERMITTED BY APPLICABLE LAW, THE SOFTWARE IS PROVIDED "AS-IS", AND
 * NATIONAL ICT AUSTRALIA AND ITS CONTRIBUTORS MAKE NO REPRESENTATIONS,
 * WARRANTIES OR CONDITIONS OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO ANY REPRESENTATIONS, WARRANTIES OR CONDITIONS
 * REGARDING THE CONTENTS OR ACCURACY OF THE SOFTWARE, OR OF TITLE,
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT,
 * THE ABSENCE OF LATENT OR OTHER DEFECTS, OR THE PRESENCE OR ABSENCE OF
 * ERRORS, WHETHER OR NOT DISCOVERABLE.
 * 
 * TO THE FULL EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL
 * NATIONAL ICT AUSTRALIA OR ITS CONTRIBUTORS BE LIABLE ON ANY LEGAL
 * THEORY (INCLUDING, WITHOUT LIMITATION, IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHERWISE) FOR ANY CLAIM, LOSS, DAMAGES OR OTHER
 * LIABILITY, INCLUDING (WITHOUT LIMITATION) LOSS OF PRODUCTION OR
 * OPERATION TIME, LOSS, DAMAGE OR CORRUPTION OF DATA OR RECORDS; OR LOSS
 * OF ANTICIPATED SAVINGS, OPPORTUNITY, REVENUE, PROFIT OR GOODWILL, OR
 * OTHER ECONOMIC LOSS; OR ANY SPECIAL, INCIDENTAL, INDIRECT,
 * CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES, ARISING OUT OF OR IN
 * CONNECTION WITH THIS LICENCE, THE SOFTWARE OR THE USE OF OR OTHER
 * DEALINGS WITH THE SOFTWARE, EVEN IF NATIONAL ICT AUSTRALIA OR ITS
 * CONTRIBUTORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH CLAIM, LOSS,
 * DAMAGES OR OTHER LIABILITY.
 * 
 * If applicable legislation implies representations, warranties, or
 * conditions, or imposes obligations or liability on National ICT
 * Australia or one of its contributors in respect of the Software that
 * cannot be wholly or partly excluded, restricted or modified, the
 * liability of National ICT Australia or the contributor is limited, to
 * the full extent permitted by the applicable legislation, at its
 * option, to:
 * a.  in the case of goods, any one or more of the following:
 * i.  the replacement of the goods or the supply of equivalent goods;
 * ii.  the repair of the goods;
 * iii. the payment of the cost of replacing the goods or of acquiring
 *  equivalent goods;
 * iv.  the payment of the cost of having the goods repaired; or
 * b.  in the case of services:
 * i.  the supplying of the services again; or
 * ii.  the payment of the cost of having the services supplied again.
 * 
 * The construction, validity and performance of this licence is governed
 * by the laws in force in New South Wales, Australia.
 */

/*
Author: Ben Leslie
*/

#ifndef _STDIO_H_
#define _STDIO_H_

#include <stddef.h>
#include <stdarg.h>

#ifdef THREAD_SAFE
#include <mutex/mutex.h>
#define lock_stream(s) mutex_count_lock(&(s)->mutex)
#define unlock_stream(s) mutex_count_unlock(&(s)->mutex)
#else
#define lock_stream(s)
#define unlock_stream(s)
#endif
 
#define __UNGET_SIZE 10

struct __file {
	void *handle;

	size_t (*read_fn)(void *, long int, size_t, void *);
	size_t (*write_fn)(void *, long int, size_t, void *);
	int (*close_fn)(void *);
	long int (*eof_fn)(void *);

	unsigned char buffering_mode;
	char *buffer;

	unsigned char unget_pos;
	long int current_pos;

#ifdef THREAD_SAFE
	struct mutex mutex;
#endif
	
	int eof;
	int error;

	char unget_stack[__UNGET_SIZE];
};

typedef struct __file FILE; /* This needs to be done correctly */
typedef long fpos_t; /* same */

#define _IOFBF 0
#define _IOLBF 1
#define _IONBF 2

#define BUFSIZ 37
#define EOF (-1)

#define FOPEN_MAX 37
#define FILENAME_MAX 37
#define L_tmpnam 37

#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif
#ifndef SEEK_END
#define SEEK_END 2
#endif

#define TMP_MAX 37

extern FILE *stderr;
extern FILE *stdin;
extern FILE *stdout;

/* 7.19.4 Operations on files */
int remove(const char *);
int rename(const char *, const char *);
FILE *tmpfile(void);
char *tmpnam(char *);
int fclose(FILE *);
int fflush(FILE *);
FILE *fopen(const char *, const char *);
FILE *freopen(const char *, const char *, FILE *);
void setbuf(FILE *, char *);
int setvbuf(FILE *, char *, int, size_t);

/* 7.19.6 Format i/o functions */
int fprintf(FILE *, const char *, ...);
int fscanf(FILE *, const char *, ...);
int printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
int scanf(const char *, ...);
int snprintf(char *, size_t , const char *, ...);
int sprintf(char *, const char *, ...);
int sscanf(const char *, const char *, ...);
int vfprintf(FILE *, const char *, va_list);
int vfscanf(FILE *, const char *, va_list);
int vprintf(const char *, va_list);
int vscanf(const char *, va_list);
int vsnprintf(char *, size_t, const char *, va_list );
int vsprintf(char *, const char *format, va_list arg);
int vsscanf(const char *s, const char *format, va_list arg);

/* 7.19.7 Character i/o functions */
int fgetc(FILE *);
char *fgets(char *, int, FILE *);
int fputc(int, FILE *);
int fputs(const char *, FILE *);

/* getc is specified to be the same as fgetc, so it makes
   the most sense to implement as a macro here */
#define getc fgetc /*int getc(FILE *); */

int getchar(void);
char *gets(char *);

/* putc is specified to be the same as fputc, so it makes
   the most sense to implement as a macro here */
#define putc fputc /*int fetc(int, FILE *); */

int putchar(int);
int puts(const char *);
int ungetc(int, FILE *);

/* 7.19.8 Direct I/O functions */
size_t fread(void *, size_t, size_t, FILE *);
size_t fwrite(const void *, size_t, size_t, FILE *);

/* 7.19.9 File positioning functions */
int fgetpos(FILE *, fpos_t *);
int fseek(FILE *, long int, int);
int fsetpos(FILE *, const fpos_t *);
long int ftell(FILE *);
void rewind(FILE *);

/* 7.19.10 Error-handling functions */
void clearerr(FILE *);
int feof(FILE *);
int ferror(FILE *);
void perror(const char *);

#endif /* _STDIO_H_ */