98 lines
2.8 KiB
C
Executable File
98 lines
2.8 KiB
C
Executable File
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_print_hex_ptr.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/11/05 15:58:57 by tomoron #+# #+# */
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/* Updated: 2023/11/05 15:58:58 by tomoron ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "ft_printf.h"
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int ft_calc_hex_len(long unsigned int n, t_flags flags)
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{
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int res;
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res = 1;
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if (n == 0 && flags.precision == 0)
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return (0);
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while (n > 15)
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{
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res++;
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n /= 16;
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}
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return (res);
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}
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void ft_put_hex(unsigned long int n, char mode)
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{
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if (n > 15)
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ft_put_hex(n / 16, mode);
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if (mode == 'L')
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write(1, &"0123456789abcdef"[n % 16], 1);
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if (mode == 'U')
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write(1, &"0123456789ABCDEF"[n % 16], 1);
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}
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size_t ft_print_ptr(void *ptr, t_flags flags)
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{
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int len;
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int res;
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res = 0;
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if (!ptr)
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return (ft_print_str("(nil)", flags));
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len = ft_calc_hex_len((long unsigned int)ptr, flags) + 2;
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if (flags.min_width && !flags.left_justify)
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res += ft_fill_width(' ', flags.min_width - len);
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ft_putstr("0x");
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ft_put_hex((unsigned long int)ptr, 'L');
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if (flags.min_width && flags.left_justify)
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res += ft_fill_width(' ', flags.min_width - len);
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return (res + len);
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}
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size_t ft_write_blank(int blank_len, t_flags flags, char mode)
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{
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size_t res;
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res = 0;
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if (blank_len > 0 && ((flags.left_justify && mode == 'A')
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|| (!flags.left_justify && mode == 'B')))
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{
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if (flags.zero_padding && flags.precision == -1)
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res += ft_fill_width('0', blank_len);
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else
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res += ft_fill_width(' ', blank_len);
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}
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return (res);
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}
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size_t ft_print_hex(unsigned int nb, t_flags flags, char mode)
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{
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int blank_len;
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int zero_len;
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int number_len;
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size_t res;
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number_len = ft_calc_hex_len(nb, flags);
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res = number_len;
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zero_len = 0;
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if (flags.precision > number_len)
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zero_len = flags.precision - number_len;
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blank_len = flags.min_width - zero_len - number_len;
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blank_len -= flags.zero_x_prefix * 2;
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res += ft_write_blank(blank_len, flags, 'B');
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if (flags.zero_x_prefix && nb && mode == 'L')
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res += ft_putstr("0x");
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if (flags.zero_x_prefix && nb && mode == 'U')
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res += ft_putstr("0X");
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res += ft_fill_width('0', zero_len);
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if (flags.precision != 0 || nb != 0)
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ft_put_hex(nb, mode);
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res += ft_write_blank(blank_len, flags, 'A');
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return (res);
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}
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