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96 lines
3.3 KiB
96 lines
3.3 KiB
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_printf.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2021/10/27 08:09:49 by narnaud #+# #+# */
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/* Updated: 2021/11/17 09:40:16 by narnaud ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "ft_printf.h"
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#include "./libft/libft.h"
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int handle_options(va_list args, const char *str, t_opts *opts)
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{
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while (*str && !ft_strchr("cspdiuxX%", *str)) {
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if (*str == '-') opts->minus = 1;
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else if (*str == '0') opts->zero = 1;
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else if (*str == '#') opts->hash = 1;
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else if (*str == ' ') opts->space = 1;
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else if (*str == '+') opts->plus = 1;
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else if (*str == '.') opts->dot = 1;
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else if (ft_isdigit(*str))
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{
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if (opts->dot) opts->precision = ft_atoi(str);
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else opts->width = ft_atoi(str);
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while (ft_isdigit(*str)) {
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str++;
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opts->len++;
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}
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continue;
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} else if (*str == '*')
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{
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if (opts->dot) opts->precision = va_arg(args, int);
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else opts->width = va_arg(args, int);
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} else return (0);
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str++;
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opts->len++;
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}
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return (1);
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}
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int handle_functions(va_list args, const char *str, t_opts *opts)
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{
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size_t n = 0;
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size_t ret = 0;
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const char *g_types = {"cspdiuxX%"};
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static int (*g_printf_fcts[9])(va_list arg, const char *str, t_opts *opts) = {
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va_print_char, va_print_str, va_print_ptr, va_print_nbr, va_print_nbr,
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va_print_unsign, va_print_x, va_print_x_cap, va_print_perc};
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while (g_types[n] && g_types[n] != *str)
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n++;
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if (g_types[n]) {
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if (opts->minus) opts->zero = 0;
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if (opts->precision > 0) opts->zero = 0;
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if (opts->width < 0)
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{
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opts->minus = 1;
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opts->width *= -1;
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}
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if (opts->precision < 0)
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opts->dot = 0;
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ret += (g_printf_fcts[n])(args, str, opts);
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}
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return ret;
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}
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int ft_printf(const char *str, ...)
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{
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va_list args;
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size_t i;
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t_opts opts;
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i = 0;
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va_start(args, str);
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while (*str)
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{
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if (*str == '%' && str++)
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{
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opts = (t_opts){0};
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if (handle_options(args, str, &opts))
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{
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str += opts.len;
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i += handle_functions(args, str, &opts);
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}
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}
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else if (++i)
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ft_putchar_fd(*str, 1);
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str++;
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}
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va_end(args);
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return (i);
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}
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