homework/cpp/_rvmain.cpp

#include <stdint.h>

int strlen(char *s) {
    char *p = s;
    while (*p != '\0')
        p++;
    return p - s;
}

void strcpy(char *s, char *t)
{
     while (*s++ = *t++);
}


// Effective C++ by  Scott Meyers
// page. 6 
// Item 1: Prefer const and inline to #define.
//
class NewDefine{

    private:
        static const int ALLOCSIZE= 10000; 

};

const int NewDefine::ALLOCSIZE;

#define ALLOCSIZE 10000

static char allocbuf[ALLOCSIZE]; 
static char *allocp = allocbuf; 

char *alloc(int n) 
{

    if (n % 4 != 0) { 
        n += 4 - (n % 4);
    }


     if (allocbuf + ALLOCSIZE - allocp >= n) { 
     allocp += n;
     return allocp - n; 
     } else 
     return 0;
}

// def. model danych

//pre processor
#define LEN (8+2)*10

struct model {
    char *      ptr;
    uint32_t    len ;
};


//alg
// prosta implementacji func. z bibl. std. strok przy uzyciu  gpt3.5
//

#define NULL ((void*) 0)
bool is_delim(char c, const char *delims) {
    while (*delims) {
        if (c == *delims) {
            return true;
        }
        delims++;
    }
    return false;
}

char *simple_strtok(char *str, const char *delims) {
    static char *static_str = (char *) NULL; 

    if (str !=(char *) NULL) {
        static_str = str;
    }

    if (static_str == (char *) NULL) {
        return (char *)NULL;
    }

    while (*static_str && is_delim(*static_str, delims)) {
        static_str++;
    }

    if (*static_str == '\0') {
        return (char *)NULL;
    }

    char *token_start = static_str;

    while (*static_str && !is_delim(*static_str, delims)) {
        static_str++;
    }

    if (*static_str) {
        *static_str = '\0';
        static_str++;
    }

    return token_start;
}

char buf[1000];
struct model * p = (struct model *) buf; //p[1]

/*
int alg(char *ptr) {
    const char *delims = " ,.!?:;\n\t";
    int pos = 0;

    char *token = simple_strtok(ptr, delims);
    while (token != (char *)NULL) {
        p[pos].ptr = token;
        p[pos].len = strlen(token);
        ++pos;
        token = simple_strtok((char *)NULL, delims);
    }

    return pos;
}
*/

int alg(char *ptr) {
    const char *delims = " ,.!?:;\n\t";
    int pos = 0;

    char *token = simple_strtok(ptr, delims);
    while (token != (char *)NULL) {
        p[pos].ptr = token;
        p[pos].len = strlen(token);
        ++pos;
        token = simple_strtok((char *)NULL, delims); 
    }
    return pos;
}

// gdb: p/x (model[]*)p[0].len
// gdb: p/s (char *)(model[]*)p[2].ptr
// :) powered by rv32i
int main() { 
    char *str = " Success is often defined as the ability to reach your goals in life, whatever those goals may be. In some ways, a better word for success might be attainment, accomplishment, or progress. It is not necessarily a destination but a journey that helps develop the skills and resources you need to thrive.";
    alg(str);
    asm ("nop");

	return 1;
}