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print_ptr.c
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print_ptr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* print_ptr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ldulling <ldulling@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/10/22 19:27:12 by ldulling #+# #+# */
/* Updated: 2023/10/22 20:17:19 by ldulling ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
static int print_nullptr(t_struct *f);
static int ptrlen(size_t ptr);
static int fullptrlen(int len_ptr, t_struct *f);
static int puthex(size_t ptr);
int print_ptr(size_t ptr, t_struct *f)
{
int len_ptr;
int len_full;
int printed;
printed = 0;
if (!ptr)
return (printed += print_nullptr(f));
len_ptr = ptrlen(ptr);
len_full = fullptrlen(len_ptr, f);
if (!f->minus && f->width > len_full && !(f->zero && f->precision < 0))
printed += ft_putnchar_fd(' ', f->width - len_full, FD);
if (f->plus)
printed += ft_putnchar_fd('+', 1, FD);
else if (f->space)
printed += ft_putnchar_fd(' ', 1, FD);
printed += ft_putnstr_fd("0x", 2, FD);
if (f->precision > len_ptr)
printed += ft_putnchar_fd('0', f->precision - len_ptr, FD);
else if (f->zero && !f->minus && f->precision < 0 && f->width > len_full)
printed += ft_putnchar_fd('0', f->width - len_full, FD);
printed += puthex(ptr);
if (f->minus && f->width > len_full)
printed += ft_putnchar_fd(' ', f->width - len_full, FD);
return (printed);
}
static int print_nullptr(t_struct *f)
{
int len;
int printed;
len = ft_strlen(NULL_PRINTOUT_PTR);
printed = 0;
if (!f->minus && f->width > len)
printed += ft_putnchar_fd(' ', f->width - len, FD);
printed += ft_putnstr_fd(NULL_PRINTOUT_PTR, len, FD);
if (f->minus && f->width > len)
printed += ft_putnchar_fd(' ', f->width - len, FD);
return (printed);
}
static int ptrlen(size_t ptr)
{
int len_ptr;
len_ptr = 0;
while (ptr)
{
ptr /= 16;
len_ptr++;
}
return (len_ptr);
}
static int fullptrlen(int len_ptr, t_struct *f)
{
int len_full;
len_full = len_ptr;
if (len_full < f->precision)
len_full = f->precision;
if (f->plus || f->space)
len_full++;
len_full += ft_strlen("0x");
return (len_full);
}
static int puthex(size_t ptr)
{
int printed;
printed = 0;
if (ptr >= 16)
printed += puthex(ptr / 16);
ptr %= 16;
if (ptr >= 10)
printed += ft_putnchar_fd(ptr - 10 + 'a', 1, FD);
else
printed += ft_putnchar_fd(ptr + '0', 1, FD);
return (printed);
}