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/*
ft_printf
Copyright (C) 2026 yctct
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
// for specifier 'c', we use int because char will be promoted to
// int anyway
//
// we store address of pointer in variable cause variadic
//
// ap: argument pointer
// ap gets incremented on each call
//
// a pointer pointing to the first flag/argument
// format states how many arguments are there
//
// va_start initialise the vector argument
//
// *format is the whole string printed by printf
//
// the last condition of ft_whichspecifier is to deal with
// specifier followed by a non-conversion specifier
#include "ft_printf.h"
int ft_whichspecifier(va_list ap, const char *format)
{
int counter;
counter = 0;
if (*format == 'c')
counter += ft_putchar((char)(va_arg(ap, int)));
else if (*format == 's')
counter += ft_putstr((va_arg(ap, char *)));
else if (*format == 'i' || *format == 'd')
counter += ft_putnbr((va_arg(ap, int)));
else if (*format == 'u')
counter += ft_putunsigned((va_arg(ap, unsigned int)));
else if (*format == 'x')
counter += ft_puthexlower((va_arg(ap, unsigned int)));
else if (*format == 'X')
counter += ft_puthexupper((va_arg(ap, unsigned int)));
else if (*format == 'p')
counter += ft_checkpadd(ap);
else if (*format == '%')
counter += write(1, "%", 1);
else
{
counter += write(1, "%", 1);
//counter += ft_putchar(*format);
counter += write(1, &(*format), 1);
}
return (counter);
}
int ft_printf(const char *format, ...)
{
int counter;
va_list ap;
va_start(ap, format);
counter = 0;
if (!format)
return (-1);
while (*format)
{
if (*format == '%')
{
format++;
counter += ft_whichspecifier(ap, format);
}
else
counter += ft_putchar(*format);
format++;
}
return (counter);
}
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