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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_printf.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/03/12 18:18:59 by dkaiser #+# #+# */
/* Updated: 2024/03/15 13:05:57 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "../ft_printf.h"
static int print_char(char c)
{
return (write(1, &c, 1));
}
static int print_str(char *str)
{
int success;
int len;
if (str)
{
len = 0;
while (str[len])
len++;
success = write(1, str, len);
if (success < 0)
return (-1);
return (len);
}
else
{
success = write(1, "(null)", 6);
if (success == 6)
return (6);
return (-1);
}
}
static int print_conv(va_list args, char c)
{
if (c == 'c')
return (print_char(va_arg(args, int)));
if (c == 's')
return (print_str(va_arg(args, char *)));
if (c == 'p')
return (ft_printaddr(va_arg(args, void *)));
if (c == 'd' || c == 'i')
return (ft_printnbr(va_arg(args, int)));
if (c == 'u')
return (ft_printunbr(va_arg(args, unsigned int)));
if (c == 'x' || c == 'X')
return (ft_printhex(va_arg(args, unsigned int), c));
if (c == '%')
return (print_char('%'));
return (-1);
}
int ft_printf(const char *fmt, ...)
{
int result;
int last_result;
int success;
va_list args;
result = 0;
va_start(args, fmt);
while (*fmt)
{
last_result = result;
if (*fmt == '%')
result += print_conv(args, *(++fmt));
else
{
success = write(1, fmt, 1);
if (success <= 0)
return (-1);
result++;
}
fmt++;
if (result < last_result)
return (-1);
}
va_end(args);
return (result);
}
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