ft_printf/srcs/ft_print_opts.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_print_opts.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: narnaud <narnaud@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/04/11 08:05:56 by narnaud           #+#    #+#             */
/*   Updated: 2023/04/11 08:05:58 by narnaud          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "ft_printf.h"

char	*zero_fill(char *nbr, t_opts *opts)
{
	int		len;
	char	*fill;

	fill = NULL;
	if (opts->zero)
		len = opts->width - ft_strlen(nbr);
	else if (opts->dot)
		len = opts->precision - ft_strlen(nbr);
	else
		return (NULL);
	if (len < 0 || (opts->zero && len == 0))
		return (NULL);
	if ((nbr[0] == '-' || nbr[0] == '+' || nbr[0] == ' ') && opts->dot)
		fill = ft_strnew(len + 1, '0');
	else
		fill = ft_strnew(len, '0');
	if (nbr[0] == '-' || nbr[0] == '+' || nbr[0] == ' ')
	{
		fill[0] = nbr[0];
		nbr[0] = '0';
	}
	return (fill);
}

char	*int_opts_transform(int n, char *nbr, t_opts *opts)
{
	if (opts->plus && n >= 0)
		nbr = ft_strjoin("+", nbr);
	else if (opts->space && n >= 0)
		nbr = ft_strjoin(" ", nbr);
	else if (opts->precision == 0 && opts->dot && n == 0 && opts->len)
		nbr = ft_strdup("");
	else
		nbr = ft_strdup(nbr);
	if (opts->precision > 0)
		nbr = ft_append(zero_fill(nbr, opts), nbr);
	else if (opts->zero && !opts->dot)
		nbr = ft_append(zero_fill(nbr, opts), nbr);
	return (nbr);
}

char	*uint_opts_transform(unsigned int n, char *nbr, t_opts *opts)
{
	if (opts->plus)
		nbr = ft_strjoin("+", nbr);
	else if (opts->space)
		nbr = ft_strjoin(" ", nbr);
	else if (opts->precision == 0 && opts->dot && n == 0 && opts->len)
		nbr = ft_strdup("");
	else
		nbr = ft_strdup(nbr);
	if (opts->precision > 0)
		nbr = ft_append(zero_fill(nbr, opts), nbr);
	else if (opts->zero && !opts->dot)
		nbr = ft_append(zero_fill(nbr, opts), nbr);
	return (nbr);
}

char	*ptr_opts_transform(char *nbr, t_opts *opts)
{
	if (opts->plus)
		nbr = ft_strjoin("+", nbr);
	else if (opts->space)
		nbr = ft_strjoin(" ", nbr);
	else if (opts->precision == 0 && opts->dot && opts->len)
		nbr = ft_strdup("");
	else
		nbr = ft_strdup(nbr);
	if (opts->precision > 0)
		nbr = ft_append(zero_fill(nbr, opts), nbr);
	else if (opts->zero && !opts->dot)
		nbr = ft_append(zero_fill(nbr, opts), nbr);
	return (nbr);
}

char	*str_opts_transform(char *str, t_opts *opts)
{
	int		len;
	char	*tmp;
	char	*sub;

	tmp = NULL;
	sub = NULL;
	if (opts->dot)
		sub = ft_substr(str, 0, opts->precision);
	if (sub)
		str = sub;
	len = opts->width - (int)ft_strlen(str);
	tmp = ft_strnew(len, ' ');
	if (!opts->minus && len > 0)
		str = ft_strjoin(tmp, str);
	else if (opts->minus && len > 0)
		str = ft_strjoin(str, tmp);
	else
		str = ft_strdup(str);
	if (tmp)
		free(tmp);
	if (sub)
		free(sub);
	return (str);
}