1 files changed, 115 insertions, 0 deletions
diff --git a/src/ft_printf/utils.c b/src/ft_printf/utils.c
new file mode 100644
index 0000000..ad44980
--- /dev/null
+++ b/src/ft_printf/utils.c
@@ -0,0 +1,115 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   utils.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/10/29 00:12:40 by cacharle          #+#    #+#             */
+/*   Updated: 2019/11/13 08:49:58 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_vasprintf.h"
+
+static int	nbrlen_radix(long long int nbr, int radix)
+{
+	int						counter;
+	long long unsigned int	u_nbr;
+
+	if (nbr == 0)
+		return (1);
+	counter = 0;
+	u_nbr = nbr;
+	if (nbr < 0)
+	{
+		counter++;
+		u_nbr = -nbr;
+	}
+	while (u_nbr > 0)
+	{
+		u_nbr /= radix;
+		counter++;
+	}
+	return (counter);
+}
+
+char		*ft_itoa_base(long long int n, char *base)
+{
+	char					*str;
+	int						len;
+	int						radix;
+	long long unsigned int	u_nbr;
+
+	radix = ft_strlen(base);
+	len = nbrlen_radix(n, radix);
+	if ((str = (char*)malloc(sizeof(char) * (len + 1))) == NULL)
+		return (NULL);
+	str[len] = '\0';
+	u_nbr = n < 0 ? -n : n;
+	if (n < 0)
+		str[0] = '-';
+	while (--len >= (n < 0 ? 1 : 0))
+	{
+		str[len] = base[u_nbr % radix];
+		u_nbr /= radix;
+	}
+	return (str);
+}
+
+static int	nbrlen_unsigned_radix(long long unsigned int nbr, int radix)
+{
+	int					counter;
+
+	if (nbr == 0)
+		return (1);
+	counter = 0;
+	while (nbr > 0)
+	{
+		nbr /= radix;
+		counter++;
+	}
+	return (counter);
+}
+
+char		*ft_itoa_unsigned_base(long long unsigned int n, char *base)
+{
+	char				*str;
+	int					len;
+	int					radix;
+
+	radix = ft_strlen(base);
+	len = nbrlen_unsigned_radix(n, radix);
+	if ((str = (char*)malloc(sizeof(char) * (len + 1))) == NULL)
+		return (NULL);
+	str[len] = '\0';
+	while (--len >= 0)
+	{
+		str[len] = base[n % radix];
+		n /= radix;
+	}
+	return (str);
+}
+
+void		*ft_memjoin_free(void *dst, int dst_size, void *src, int src_size)
+{
+	void	*clone;
+
+	if (dst == NULL)
+	{
+		if ((dst = malloc(src_size)) == NULL)
+			return (NULL);
+		ft_memcpy(dst, src, src_size);
+		return (dst);
+	}
+	if ((clone = malloc(dst_size)) == NULL)
+		return (NULL);
+	ft_memcpy(clone, dst, dst_size);
+	free(dst);
+	if ((dst = malloc(dst_size + src_size)) == NULL)
+		return (NULL);
+	ft_memcpy(dst, clone, dst_size);
+	free(clone);
+	ft_memcpy(dst + dst_size, src, src_size);
+	return (dst);
+}