space_game/src/basic-lib.c

#include <stdio.h>
#include <time.h>
#include <string.h>

//   #define LOGGING 1
//  #define log_var(string, content) if (LOGGING) {time_t current_time; time(&current_time); printf("%s",asctime(localtime(&current_time))); printf(string, content);}
// #define log_str(string) if (LOGGING) {time_t current_time; time(&current_time); puts(asctime(localtime(&current_time))); puts(string);}

void enumerate_string(char test_array[]) {
    char *ptr;
    ptr = &(test_array[0]);
    for (int i=0; i<5; i++) {
        printf("%c", *(ptr + i));
    }
}

int copy_str(char * out_string, char * string) {
    /* A drop in replacement for strcpy() from <string.h>*/
    int len = 0;
    while (*(string + len) != '\0') {
        *(out_string + len) = *(string + len);
        len++;
    }
    *(out_string + len) =  '\0';
    return (1);
}

int get_str_len(char * string) {
    int len = 0;
    while (*(string + len) != '\0') {
        len++;
    }
    return(len);
}

void replace_char(char * array, char * charac) {
    int length;
    length =  sizeof(*array)/sizeof(char);
    char combined[length];

    int i = 0;
    int counter = 0;

    while (*(array + i) != '\0') {
        if (*(array + i) != *charac)  {
            *(array + counter) = *(array + i);
            counter++;
        }
        i++;
    }
    *(array + counter + 1) = '\0';
}

void join_strings(char * return_val, char * str_1, char * str_2) {

    int len1 = get_str_len(str_1);
    int len2 = get_str_len(str_2);

    int length = len1 + len2;
    char combined[length+1];
    int i = 0;
    int j = 0;

    while (*(str_1 + i) != '\0') {
            combined[i] = *(str_1 + i);
            i++;
    }

    while (*(str_2 + j) != '\0') {
        combined[len1+j] = *(str_2 + j);
        j++;
    }
    copy_str(return_val, combined);
}

void get_time(void) {
    char time_str[100];
    time_t current_time;
    time(&current_time); 
    copy_str(time_str, asctime(localtime(&current_time)));

    strcat(time_str, "hello world");
    //replace_char(&(time_str[0]), "\n");
    printf("%s", time_str);

    char string[20];
    copy_str(string, "NONEWLINEhello");


    replace_char(&(time_str[0]), "\n");
    char newstr[120];
    join_strings(&(newstr[0]), &(time_str[0]), &(string[0]));
    replace_char(&(newstr[0]), "\n");

    printf("%s", newstr);
}