printf.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include "printf.h"

Data Structures
struct	out_fct_wrap_type

Macros
#define	PRINTF_NTOA_BUFFER_SIZE   32U
#define	PRINTF_FTOA_BUFFER_SIZE   32U
#define	PRINTF_SUPPORT_PTRDIFF_T
#define	FLAGS_ZEROPAD   (1U << 0U)
#define	FLAGS_LEFT   (1U << 1U)
#define	FLAGS_PLUS   (1U << 2U)
#define	FLAGS_SPACE   (1U << 3U)
#define	FLAGS_HASH   (1U << 4U)
#define	FLAGS_UPPERCASE   (1U << 5U)
#define	FLAGS_CHAR   (1U << 6U)
#define	FLAGS_SHORT   (1U << 7U)
#define	FLAGS_LONG   (1U << 8U)
#define	FLAGS_LONG_LONG   (1U << 9U)
#define	FLAGS_PRECISION   (1U << 10U)
#define	FLAGS_WIDTH   (1U << 11U)

Typedefs
typedef void(*	out_fct_type) (char character, char *buffer, size_t idx, size_t maxlen)

Functions
static void	_out_buffer (char character, char *buffer, size_t idx, size_t maxlen)
static void	_out_null (char character, char *buffer, size_t idx, size_t maxlen)
static void	_out_char (char character, char *buffer, size_t idx, size_t maxlen)
static void	_out_fct (char character, char *buffer, size_t idx, size_t maxlen)
static unsigned int	_strlen (const char *str)
static bool	_is_digit (char ch)
static unsigned int	_atoi (const char **str)
static size_t	_ntoa_format (out_fct_type out, char *buffer, size_t idx, size_t maxlen, char *buf, size_t len, bool negative, unsigned int base, unsigned int prec, unsigned int width, unsigned int flags)
static size_t	_ntoa_long (out_fct_type out, char *buffer, size_t idx, size_t maxlen, unsigned long value, bool negative, unsigned long base, unsigned int prec, unsigned int width, unsigned int flags)
static int	_vsnprintf (out_fct_type out, char *buffer, const size_t maxlen, const char *format, va_list va)
int	printf (const char *format,...)
int	sprintf (char *buffer, const char *format,...)
int	snprintf (char *buffer, size_t count, const char *format,...)
int	vsnprintf (char *buffer, size_t count, const char *format, va_list va)
int	fctprintf (void(*out)(char character, void *arg), void *arg, const char *format,...)

Macro Definition Documentation

FLAGS_CHAR

#define FLAGS_CHAR   (1U << 6U)

FLAGS_HASH

#define FLAGS_HASH   (1U << 4U)

FLAGS_LEFT

#define FLAGS_LEFT   (1U << 1U)

FLAGS_LONG

#define FLAGS_LONG   (1U << 8U)

FLAGS_LONG_LONG

#define FLAGS_LONG_LONG   (1U << 9U)

FLAGS_PLUS

#define FLAGS_PLUS   (1U << 2U)

FLAGS_PRECISION

#define FLAGS_PRECISION   (1U << 10U)

FLAGS_SHORT

#define FLAGS_SHORT   (1U << 7U)

FLAGS_SPACE

#define FLAGS_SPACE   (1U << 3U)

FLAGS_UPPERCASE

#define FLAGS_UPPERCASE   (1U << 5U)

FLAGS_WIDTH

#define FLAGS_WIDTH   (1U << 11U)

FLAGS_ZEROPAD

#define FLAGS_ZEROPAD   (1U << 0U)

PRINTF_FTOA_BUFFER_SIZE

#define PRINTF_FTOA_BUFFER_SIZE   32U

PRINTF_NTOA_BUFFER_SIZE

#define PRINTF_NTOA_BUFFER_SIZE   32U

PRINTF_SUPPORT_PTRDIFF_T

#define PRINTF_SUPPORT_PTRDIFF_T

Typedef Documentation

out_fct_type

typedef void(* out_fct_type) (char character, char *buffer, size_t idx, size_t maxlen)

Function Documentation

_atoi()

static unsigned int _atoi ( const char **  str )

inlinestatic

_is_digit()

static bool _is_digit ( char  ch )

inlinestatic

_ntoa_format()

static size_t _ntoa_format ( out_fct_type  out, char *  buffer, size_t  idx, size_t  maxlen, char *  buf, size_t  len, bool  negative, unsigned int  base, unsigned int  prec, unsigned int  width, unsigned int  flags  )

static

_ntoa_long()

static size_t _ntoa_long ( out_fct_type  out, char *  buffer, size_t  idx, size_t  maxlen, unsigned long  value, bool  negative, unsigned long  base, unsigned int  prec, unsigned int  width, unsigned int  flags  )

static

_out_buffer()

static void _out_buffer ( char  character, char *  buffer, size_t  idx, size_t  maxlen  )

inlinestatic

_out_char()

static void _out_char ( char  character, char *  buffer, size_t  idx, size_t  maxlen  )

inlinestatic

_out_fct()

static void _out_fct ( char  character, char *  buffer, size_t  idx, size_t  maxlen  )

inlinestatic

_out_null()

static void _out_null ( char  character, char *  buffer, size_t  idx, size_t  maxlen  )

inlinestatic

_strlen()

static unsigned int _strlen ( const char *  str )

inlinestatic

_vsnprintf()

static int _vsnprintf ( out_fct_type  out, char *  buffer, const size_t  maxlen, const char *  format, va_list  va  )

static

fctprintf()

int fctprintf	(	void(*)(char character, void *arg)	out,
		void *	arg,
		const char *	format,
			...
	)

printf with output function You may use this as dynamic alternative to printf() with its fixed _putchar() output

Parameters

out	An output function which takes one character and an argument pointer
arg	An argument pointer for user data passed to output function
format	A string that specifies the format of the output

Returns

The number of characters that are sent to the output function, not counting the terminating null character

printf()

int printf	(	const char *	format,
			...
	)

Tiny printf implementation You have to implement _putchar if you use printf()

Parameters

format

A string that specifies the format of the output

Returns

The number of characters that are written into the array, not counting the terminating null character

snprintf()

int snprintf	(	char *	buffer,
		size_t	count,
		const char *	format,
			...
	)

Tiny snprintf/vsnprintf implementation

Parameters

buffer	A pointer to the buffer where to store the formatted string
count	The maximum number of characters to store in the buffer, including a terminating null character
format	A string that specifies the format of the output

Returns

The number of characters that are WRITTEN into the buffer, not counting the terminating null character If the formatted string is truncated the buffer size (count) is returned

sprintf()

int sprintf	(	char *	buffer,
		const char *	format,
			...
	)

Tiny sprintf implementation Due to security reasons (buffer overflow) YOU SHOULD CONSIDER USING (V)SNPRINTF INSTEAD!

Parameters

buffer	A pointer to the buffer where to store the formatted string. MUST be big enough to store the output!
format	A string that specifies the format of the output

Returns

The number of characters that are WRITTEN into the buffer, not counting the terminating null character

vsnprintf()

int vsnprintf	(	char *	buffer,
		size_t	count,
		const char *	format,
		va_list	va
	)