minishell/stdme/src/printf/formatter/decimal.c

89 lines
2.5 KiB
C

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* decimal.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maix <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/11/18 01:44:35 by maix #+# #+# */
/* Updated: 2024/05/14 18:43:24 by maiboyer ### ########.fr */
/* */
/* ************************************************************************** */
#include "me/mem/mem.h"
#include "me/mem/mem_set.h"
#include "me/printf/formatter/utils.h"
#include "me/printf/printf.h"
#include "me/string/str_clone.h"
#include "me/string/str_len.h"
#include <stdio.h>
#include <stdlib.h>
#define INT_INLINE_BUF 21
static void itoa_inner(t_u64 nb, t_str out)
{
t_u64 modulus;
bool need_print;
char c;
t_usize idx;
need_print = false;
modulus = 1000000000000000000;
idx = 0;
while (modulus)
{
c = (char)(nb / modulus) + '0';
if (c != '0' || need_print)
{
out[idx++] = c;
need_print = true;
}
nb = nb % modulus;
modulus /= 10;
}
}
static t_str itoa_64(t_i64 nb)
{
char out[INT_INLINE_BUF];
t_u64 n;
n = (t_u64)nb;
mem_set(out, 0, INT_INLINE_BUF);
if (nb < 0)
itoa_inner(-n, out);
else if (nb == 0)
out[0] = '0';
else
itoa_inner(n, out);
return (str_clone(out));
}
void printf_d(t_printf_arg data, t_printf_func f)
{
t_u64 value;
t_str start_num;
t_str sign;
t_str void_write;
value = *(t_i64 *)data.argument;
if ((t_u64)value & ((t_u64)1 << 31))
sign = "-";
else
sign = "+";
if (!(data.flags & SIGN) && !((t_u64)value & ((t_u64)1 << 31)))
sign = "";
if (!(data.flags & SIGN) && data.extra.space_align
&& !((t_u64)value & ((t_u64)1 << 31)))
sign = " ";
data.flags |= SIGN;
start_num = itoa_64(value);
handle_weird_precision_stuff(&data, (t_prec_strs){.out = &start_num,
.free_out = true, .pretty = &void_write}, value);
pad_and_stuff(
(t_pad_and_stuff_args){\
.fill_zero = 0, .fill = 0, .sign = sign, .pretty = NULL, .len = \
str_len(start_num), .pretty_len = 0, .str = start_num, .allow_zero_fill \
= true, .sign_len = str_len(sign), }, data, f);
mem_free(start_num);
}