Pipe_SO_lab9_Y5

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

#define WRITE 1
#define READ 0
#define SIZE 1024

char *readFile(char *path)
{
    FILE *file = fopen(path, "r");

    if (!file)
        return NULL;

    fseek(file, 0, SEEK_END);
    int length = ftell(file);
    rewind(file);

    char *result = (char *)calloc(length, sizeof(char));
    int i = 0;

    while (!feof(file))
        result[i++] = fgetc(file);

    fclose(file);
    return result;
}

int main()
{
    char path[50];
    int pdes[2];
    char bufor[SIZE];

    printf("Podaj plik: ");
    scanf("%s", path);

    pipe(pdes);

    printf("PID proc macierzysty: %d\n", getpid());

    if (fork())
    {
        close(pdes[READ]);
        printf("PID proc 1: %d\n", getpid());
        char *content = readFile(path);

        if (!content)
        {
            printf("Nie ma takiego pliku!\n");
            exit(1);
        }

        printf("Przesylam dane\n");

        fflush(stdout);
        sprintf(bufor, "%s", content);
        write(pdes[WRITE], bufor, sizeof(bufor));

        return 0;
    }
    else
    {
        close(pdes[WRITE]);

        printf("PID proc 2: %d\n", getpid());
        fflush(stdout);
        printf("oczekuje na dane\n");
        read(pdes[READ], bufor, sizeof(bufor));
        printf("odebralem dane!\n");

        int n = 0;
        FILE *file = fopen("wynik.txt", "w");
        while (bufor[n])
        {
            if (bufor[n] == -123)
                bufor[n] = 'a';
            else if (bufor[n] == -121)
                bufor[n] = 'c';
            else if (bufor[n] == -103)
                bufor[n] = 'e';
            else if (bufor[n] == -124)
                bufor[n] = 'n';
            else if (bufor[n] == -126)
                bufor[n] = 'l';
            else if (bufor[n] == -77)
                bufor[n] = 'o';
            else if (bufor[n] == -101)
                bufor[n] = 's';
            else if (bufor[n] == -70)
                bufor[n] = 'z';
            else if (bufor[n] == -68)
                bufor[n] = 'z';

            if (!(bufor[n] == -59 || bufor[n] == -60 || bufor[n] == -61 || bufor[n] == -1))
                fprintf(file, "%c", bufor[n]);

            n++;
        }
        fclose(file);
        return 0;
    }
}