#include <stdlib.h>
#include <stdio.h>
#include "funcs.h"

char* read_file(FILE* fp)
{
    /* Index */
    unsigned int n;
    /* Byte-buffer */
    char* bffr;
    /* Current read byte */
    int token;

    /* Line bellow bugged, makes an array of 4 not 5? */
    bffr =  malloc(5);
    n = 0;

    /* Get tokens untill EOF */
    while((token = fgetc(fp)) != EOF)
    {
        /* If the buffer needs resizing */
        if(sizeof(bffr) == n)
        {
            printf("sizeof(bffr) = %d \nn = %d\n", sizeof(bffr), n);
            printf("Reallocating bffr into size %d ...\n", n+5);
            /* Increase the buffer size by 5 */
            bffr = realloc(bffr, sizeof(bffr)+5);
            printf("new sizeof(bffr) = %d\n", sizeof(bffr));
        }
        /* Add token to buffer as char */
        bffr[n++] = (char)token;
    }
    /* If error doesn't return 0 This crashes the program so its been commented out
   if(ferror(fp))
    {
        return 0;
    }*/

    /* Make the buffer one byte bigger to fit string terminator */
    bffr = realloc(bffr, ++n);
    /* Add string terminator, this crashes the program, so it too has been commented out
    bffr[n] = '\0';*/

    return bffr;
}

int write_file(FILE* fp, char* bffr)
{
    int n = 0;
    /* Put bytes to file untill it returns the wrong value, crashes the program as well
    for(n= 0; fputc(bffr[n], fp) == bffr[n]; n++);*/
    return ++n;
}

#include <stdio.h>
#include <string.h>
#include "funcs.h"

int main()
{
    FILE* fp;
    char* bffr;
    char* foutput = "TEST TEEEEEEXT!";

    /* Open file */
    if((fp = fopen("./test.txt", "w+")))
    {
        /* Write data to file */
        if(write_file(fp, foutput) /*== sizeof(foutput)*/)
        {
            printf("Wrote \"%s\" to file\n\n", foutput);
            /* Read data back from file */
            if((bffr = read_file(fp)))
            {
                printf("\n\nSize of string = %d\n%s\n\n", sizeof(bffr), bffr);
            }
            else
            {
                getchar();
                fclose(fp);
                printf("Error reading file into memory.");
                getchar();
                return 1;
            }
        }
        else
        {
            fclose(fp);
            printf("Error writing from memory to file.");
            getchar();
            return 1;
        }
    }
    else
    {
        fclose(fp);
        printf("Error opening file for writing.");
        getchar();
        return 1;
    }
    fclose(fp);

    printf("%s\n%s\n", foutput, bffr);
    if(strcmp(foutput, bffr))
    {
        printf("Success!\n");
        getchar();
        return 0;
    }
    printf("Failed\n");
    getchar();
    return 1;
}