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ft_printf.c
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204 lines (172 loc) · 5.19 KB
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_printf.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: sabahass <sabahass@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/09/17 22:16:01 by sabahass #+# #+# */
/* Updated: 2025/10/21 19:07:18 by sabahass ### ########.fr */
/* */
/* ************************************************************************** */
#include "ft_printf.h"
static int format_dispatcher(char specifier, va_list *args)
{
if (specifier == 'c')
return (ft_print_c(va_arg(*args, int)));
else if (specifier == 's')
return (ft_print_s(va_arg(*args, const char *)));
else if (specifier == 'd' || specifier == 'i')
return (ft_print_d(va_arg(*args, int)));
else if (specifier == 'u')
return (ft_print_u(va_arg(*args, unsigned int)));
else if (specifier == 'x' || specifier == 'X')
return (ft_print_x(va_arg(*args, unsigned int), (specifier == 'X')));
else if (specifier == 'p')
return (ft_print_p(va_arg(*args, const void *)));
else if (specifier == '%')
return (ft_print_c('%'));
return (-1);
}
static int process_format(const char *format, unsigned int *i, va_list *args)
{
if (format[*i] == '%')
{
(*i)++;
if (!format[*i])
return (-1);
char specifier = format[*i];
(*i)++;
return (format_dispatcher(specifier, args));
}
else
{
// int j = i;
// while (format[j] && format[j] != '%')
// ++j;
// if (write (1, &format[*i], j - *i) == -1)
// return (-1);
// *i = j;
char current_char = format[*i];
(*i)++;
if (write(1, ¤t_char, 1) != 1)
return (-1);
return (1);
}
}
int ft_printf(const char *format, ...)
{
va_list args;
unsigned int i;
int total;
int result;
if (!format)
return (-1);
va_start(args, format);
i = 0;
total = 0;
while (format[i])
{
result = process_format(format, &i, &args);
if (result == -1)
return (va_end(args), -1);
total += result;
}
va_end(args);
return (total);
}
// int main(void)
// {
// int x;
// x = 42;
// // test character printing
// ft_printf("test character printing\n");
// // cases
// ft_print_c('S');
// ft_print_c('\0');
// ft_print_c('\n');
// ft_printf("========\n");
// ft_printf("test character printing normal printf\n");
// printf("%c", 'S');
// printf("%c", '\0');
// ft_print_c('\n');
// // test string printing
// ft_printf("test string printing\n");
// // cases ft_
// ft_printf("str: %s\n", "hello");
// ft_printf("null: %s\n", NULL);
// ft_print_c('\n');
// ft_printf("========\n");
// ft_printf("test string printing normal printf\n");
// // cases printf
// printf("str: %s\n", "hello");
// printf("null: %s\n", (char *)NULL);
// ft_print_c('\n');
// // test signed decimal printing
// ft_printf("test decimal printing\n");
// // cases ft_
// ft_printf("Number: %d\n", 42);
// ft_printf("Negative: %d\n", -42);
// ft_printf("Zero: %i\n", 0);
// ft_print_c('\n');
// ft_printf("========\n");
// ft_printf("test decimal printing normal printf\n");
// // cases printf
// printf("Number: %d\n", 42);
// printf("Negative: %d\n", -42);
// printf("Zero: %i\n", 0);
// ft_print_c('\n');
// // test unsigned integer printing
// ft_printf("test integer printing\n");
// // cases ft_
// ft_printf("Unsigned: %u\n", 42u);
// ft_printf("Large: %u\n", 4294967295u);
// ft_printf("Zero: %u\n", 0u);
// ft_print_c('\n');
// ft_printf("========\n");
// printf("test integer printing normal printf\n");
// // cases printf
// printf("Unsigned: %u\n", 42u);
// printf("Large: %u\n", 4294967295u);
// printf("Zero: %u\n", 0u);
// ft_print_c('\n');
// // test hexadecimal printing
// ft_printf("test hexadecimal printing\n");
// // cases ft_
// ft_printf("Hex lower: %x\n", 255);
// ft_printf("Hex upper: %X\n", 255);
// ft_printf("Zero: %x\n", 0);
// ft_print_c('\n');
// ft_printf("========\n");
// printf("test hexadecimal printing normal printf\n");
// // cases printf
// printf("Hex lower: %x\n", 255);
// printf("Hex upper: %X\n", 255);
// printf("Zero: %x\n", 0);
// ft_print_c('\n');
// // test pointer printing
// ft_printf("test pointer printing\n");
// // cases ft_
// ft_printf("Address: %p\n", &x);
// ft_printf("NULL: %p\n", NULL);
// ft_print_c('\n');
// ft_printf("========\n");
// printf("test pointer printing normal printf\n");
// // cases printf
// printf("Address: %p\n", &x);
// printf("NULL: %p\n", NULL);
// ft_print_c('\n');
// // test percent sign
// ft_printf("test percent sign\n");
// // cases ft_
// ft_printf("Progress: 100%% complete\n");
// ft_printf("Literal %%\n");
// ft_print_c('\n');
// ft_printf("========\n");
// printf("test percent sign normal printf\n");
// // cases printf
// printf("Progress: 100%% complete\n");
// printf("Literal %%\n");
// ft_print_c('\n');
// return (0);
// }