skeletton untested project

libft/ft_vector.c

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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_vector.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: thrieg <thrieg@student.42mulhouse.fr>      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/10/21 17:45:12 by thrieg            #+#    #+#             */
+/*   Updated: 2025/02/16 19:05:42 by thrieg           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_vector.h"
+#include "libft.h"
+
+//creates a vector of initial size size
+//returns its address, or NULL if any allocations fails
+t_vector	*ft_create_vector(size_t size)
+{
+	t_vector	*ret;
+
+	ret = malloc(sizeof(t_vector));
+	if (!ret)
+		return (NULL);
+	ret->buffer = malloc(sizeof(char) * size);
+	if (!ret->buffer)
+	{
+		free(ret);
+		return (NULL);
+	}
+	ret->index = 0;
+	ret->size = size;
+	ret->finished = 0;
+	return (ret);
+}
+
+//append c to the vector dest
+//returns NULL if the allocation fail and the adress of dest if all goes well
+t_vector	*ft_vector_pushback(t_vector *dest, char c)
+{
+	char	*buff;
+
+	if (dest->index >= dest->size)
+	{
+		buff = malloc(sizeof(char) * ((dest->size + 1) * 2));
+		if (!buff)
+			return (NULL);
+		ft_memcpy(buff, dest->buffer, dest->index);
+		dest->size = (dest->size + 1) * 2;
+		free(dest->buffer);
+		dest->buffer = buff;
+	}
+	dest->buffer[dest->index] = c;
+	dest->index++;
+	return (dest);
+}
+
+//append size bytes at src to the vector dest
+//returns NULL if the allocation fail and the adress of dest if all goes well
+//returns NULL if dest or src is NULL without doing anything
+t_vector	*ft_vector_concat(t_vector *dest, const void *src, size_t size)
+{
+	char	*buff;
+
+	if (!dest || !src)
+		return (NULL);
+	if ((dest->index + size) >= dest->size)
+	{
+		buff = malloc(sizeof(char) * ((dest->size + size) * 2));
+		if (!buff)
+			return (NULL);
+		ft_memcpy(buff, dest->buffer, dest->index);
+		dest->size = (dest->size + size) * 2;
+		free(dest->buffer);
+		dest->buffer = buff;
+	}
+	ft_memcpy(dest->buffer + dest->index, src, size);
+	dest->index += size;
+	return (dest);
+}
+
+//duplicates the content of a vector into an appropriately sized string
+//returns NULL if allocation fails or if vec or vec->buffer is NULL
+char	*ft_vtoc(t_vector *vec)
+{
+	char	*ret;
+
+	if (!vec)
+		return (NULL);
+	if (!vec->buffer)
+		return (NULL);
+	ret = malloc(sizeof(char) * (vec->index + 1));
+	if (!ret)
+		return (NULL);
+	ft_memcpy(ret, vec->buffer, vec->index);
+	ret[vec->index] = '\0';
+	return (ret);
+}
+
+//frees vec and all its members, sets vec to NULL and returns NULL
+void	ft_free_vector(t_vector **vec)
+{
+	if (!vec)
+		return ;
+	if (!(*vec))
+		return ;
+	if ((*vec)->buffer)
+		free((*vec)->buffer);
+	free(*vec);
+	*vec = NULL;
+}