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ft_printf.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_printf.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: apuchill <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/06 15:10:37 by apuchill #+# #+# */
/* Updated: 2020/06/01 14:58:09 by apuchill ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
static void triage_specs(va_list args, int *len, t_flags fl)
{
int *p;
if (fl.spe_c == '%')
print_spec_pct(len, fl);
if (fl.spe_c == 'c')
print_spec_c(len, fl, va_arg(args, int));
if (fl.spe_c == 's')
print_spec_s(len, fl, va_arg(args, char *));
if (fl.spe_c == 'p')
print_spec_p(len, fl, va_arg(args, unsigned long int));
if (fl.spe_c == 'i' || fl.spe_c == 'd' || fl.spe_c == 'u')
print_spec_i_d_u(len, fl, args);
if (fl.spe_c == 'x' || fl.spe_c == 'X')
print_spec_x(len, fl, args);
if (fl.spe_c == 'o')
print_spec_o(len, fl, args);
if (fl.spe_c == 'n' && (p = va_arg(args, int *)))
*p = *len;
if (fl.spe_c == 'f' || fl.spe_c == 'e' || fl.spe_c == 'g')
print_spec_f_e_g(len, fl, va_arg(args, double));
}
static t_flags treat_star(va_list args, t_flags fl, int *j)
{
int value;
(*j)++;
value = va_arg(args, int);
if (fl.point == 0)
{
fl.width = (value >= 0) ? value : -value;
fl.pad_c = (value >= 0) ? fl.pad_c : ' ';
fl.minus = (value >= 0) ? fl.minus : 1;
}
if (fl.point == 1)
{
if (value >= 0)
fl.precision = value;
else
fl.point = 0;
}
return (fl);
}
static t_flags treat_flags(va_list args, t_flags fl)
{
int j;
j = 0;
while (fl.set[j] != '\0' && ft_strchr_01(FLAGS, fl.set[j]))
{
if (fl.set[j++] == '0')
fl.pad_c = '0';
}
if (fl.set[j] == '*')
fl = treat_star(args, fl, &j);
while (fl.set[j] != '\0' && ft_strchr_01(DIGITS, fl.set[j]))
fl.width = 10 * fl.width + fl.set[j++] - '0';
if (fl.set[j] == '.')
{
fl.point = 1;
if (fl.set[++j] == '*')
fl = treat_star(args, fl, &j);
while (fl.set[j] != '\0' && ft_strchr_01(DIGITS, fl.set[j]))
fl.precision = 10 * fl.precision + fl.set[j++] - '0';
}
while (fl.set[j] != '\0' && ft_strchr_01("l", fl.set[j++]))
fl.length++;
while (fl.set[j] != '\0' && ft_strchr_01("h", fl.set[j++]))
fl.length--;
return (fl);
}
static void get_fspecs(va_list args, const char *format, int *len, int *i)
{
t_flags fl;
int j;
j = 0;
while (ft_strchr_01(ALL_FL, format[*i]) && j < 19)
fl.set[j++] = format[(*i)++];
fl.set[j] = '\0';
if (ft_strchr_01(FSPECS, format[*i]))
{
fl.spe_c = format[(*i)++];
fl.minus = ft_strchr_01(fl.set, '-');
fl.plus = ft_strchr_01(fl.set, '+');
fl.space = ft_strchr_01(fl.set, ' ');
fl.hash = ft_strchr_01(fl.set, '#');
fl.width = 0;
fl.point = 0;
fl.precision = 0;
fl.length = 0;
fl.pad_c = ' ';
fl = treat_flags(args, fl);
triage_specs(args, len, fl);
}
else
(*len) = -1;
}
int ft_printf(const char *format, ...)
{
va_list args;
int len;
int i;
va_start(args, format);
len = 0;
i = 0;
while (format[i] != '\0')
{
if (format[i] != '%')
ft_putchar_len(format[i++], &len);
else
{
i++;
get_fspecs(args, format, &len, &i);
if (len == -1)
return (-1);
}
}
va_end(args);
return (len);
}