graphs/piscine/my_c_tail/my_c_tail.c


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#include "my_c_tail.h"

#include <stdlib.h>
#include <unistd.h>

void stdintail(unsigned int n)
{
    char **lines = calloc(2000, sizeof(char *));
    lines[0] = malloc(350 * sizeof(char));
    size_t m = 0;
    char c;
    size_t i = 0;
    while (read(STDIN_FILENO, &c, 1))
    {
        if (c == '\n')
        {
            lines[m][i] = '\0';
            lines[++m] = malloc(350 * sizeof(char));
            i = 0;
        }
        else
        {
            lines[m][i++] = c;
        }
    }

    size_t j;
    if (m > n)
    {
        for (size_t i = 0; i < m - n; i++)
            free(lines[i]);
        j = m - n;
    }
    else
        j = 0;

    for (; j < m; j++)
    {
        for (size_t i = 0; lines[j][i]; i++)
            write(STDOUT_FILENO, &(lines[j][i]), 1);
        write(STDOUT_FILENO, "\n", 1);
        free(lines[j]);
    }
    free(lines[m]);
    free(lines);
}