ft_printf.h File Reference

Internal definitions and declarations for ft_printf. More...

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Data Structures
struct	s_fmt
	Format specifier data. More...
struct	s_pf
	State struct for ft_printf. More...

Macros
#define	FLAG_HASH   (1 << 0)
#define	FLAG_MINUS   (1 << 2)
#define	FLAG_PLUS   (1 << 3)
#define	FLAG_SPACE   (1 << 4)
#define	FLAG_ZERO   (1 << 1)

Typedefs
typedef struct s_fmt	t_fmt
typedef struct s_pf	t_pf

Functions
void	format_and_print_c (t_fmt *fmt, va_list *args, t_pf *pf)
	Formats and prints a character (c).
void	format_and_print_id (t_fmt *fmt, va_list *args, t_pf *pf)
	Handles d and i format specifiers for ft_printf.
void	format_and_print_percent (t_fmt *fmt, t_pf *pf)
	Formats and prints a literal percent sign (%%).
void	format_and_print_s (t_fmt *fmt, va_list *args, t_pf *pf)
	Formats and prints a string (s).
void	format_and_print_u (t_fmt *fmt, va_list *args, t_pf *pf)
	Handles u format specifier for ft_printf.
void	format_and_print_x (t_fmt *fmt, va_list *args, int upper, t_pf *pf)
	Handles x and X format specifiers for ft_printf.
int	ft_printf (const char *format,...)
	Prints formatted output according to the format string.
int	get_alternative_form_length (char specifier)
	Returns the prefix length for x and X when using # flag.
void	handle_minus_flag_p (char *str, int padding, t_pf *pf)
char *	handle_precision_int (t_fmt *fmt, char *str, int *len, t_pf *pf)
	Applies precision formatting to a numeric string.
char *	handle_precision_p (t_fmt *fmt, char *str, int *len, t_pf *pf)
int	handle_precision_s (t_fmt *fmt, int len)
	Applies precision limit to string length.
void	handle_space_flag_p (t_pf *pf, int *padding)
int	handle_width (t_fmt *fmt, size_t len)
	Computes the number of padding characters to apply.
int	initialize_printf_structs (t_pf *pf)
	Allocates and initializes the structures required by ft_printf.
int	is_valid_flag (char c)
	Checks if a character is a valid format flag.
char *	prepend_alternative_form (char *str, char specifier, t_pf *pf)
	Prepends the 0x or 0X prefix to a hexadecimal string.
void	print_formatted_number (t_fmt *fmt, char *str, int len, t_pf *pf)
	Final formatter and dispatcher for integer output.
void	print_padding (int padding, char pad_char, t_pf *pf)
	Prints a series of padding characters.
void	print_right_aligned_p (t_fmt *fmt, char *str, int padding, t_pf *pf)
void	process_format_string (const char *format, va_list *args, t_pf *pf)
	Walks through the format string and dispatches format handlers.
int	requires_alternative_form (char specifier, char *str)
	Checks whether the alternative form (#) should be applied.
int	setup_format (const char **format, t_fmt *fmt)
	Parses a full format specification (flags, width, precision, specifier).
void	write_char_safely (int fd, char c, t_pf *pf)
	Safely writes a single character to a file descriptor.
void	write_safely (int fd, char *str, t_pf *pf)
	Safely writes a null-terminated string to a file descriptor.
void	write_safely_len (int fd, char *str, size_t len, t_pf *pf)
	Safely writes len bytes from a string to a file descriptor.

Detailed Description

Internal definitions and declarations for ft_printf.

Author

Toonsa

Date

2025/04/05

This header contains all the structures, macros, and function prototypes required to implement a custom ft_printf. It supports parsing format strings, handling flags, and printing various types (characters, strings, integers, hexadecimal, pointers, etc.).

It also defines the FLAG_* macros for internal format flag management.