homework/cpp/_rvmain.cpp

104 lines
1.9 KiB
C++

#include <stdint.h>
#include <stdbool.h>
#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;
}
#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 == NULL) {
return (char *) NULL;
}
static_str = str;
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;
}
#define MAX_WORDS 100
struct model {
char *ptr;
uint32_t len;
} words[MAX_WORDS];
int word_count = 0;
int strlen(char *s) {
char *p = s;
while (*p != '\0')
p++;
return p - s;
}
int alg(char *ptr) {
const char *delims = " ,.!?:;\n\t";
int pos = 0;
while (char *token = simple_strtok(ptr, delims)) {
words[pos].ptr = token;
words[pos].len = strlen(token);
++pos;
}
return pos;
}
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.";
word_count = alg(str);
return 0;
}