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#include "utils.h"
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
struct result ok(void *value) {
return (struct result){.value = value, .errmsg = NULL};
}
struct result err(const char *errmsg) {
return (struct result){.value = NULL, .errmsg = errmsg};
}
struct allocator {
void** bufs;
size_t cap;
size_t len;
};
struct allocator * new_allocator() {
struct allocator * alct = malloc(sizeof(struct allocator));
alct->bufs = malloc(sizeof(void*) * 16);
alct->cap = 16;
alct->len = 0;
alct->bufs[0] = NULL;
return alct;
}
void delete_allocator(struct allocator * alct) {
for (size_t i = 0; i < alct->len; i++) {
free(alct->bufs[i]);
}
free(alct->bufs);
free(alct);
}
void * allocate(struct allocator * alct, size_t size) {
assert(size > 0);
if (alct->len >= alct->cap) {
alct->cap = alct->cap * 2; // Doubling the capacity
alct->bufs = realloc(alct->bufs, sizeof(void*) * alct->cap);
}
void* ptr = malloc(size); // Allocate requested size
alct->bufs[alct->len] = ptr; // Store pointer in array
alct->len++;
return ptr;
}
char* safe_sprintf(struct allocator *alct, const char* format, ...) {
va_list args;
va_list args_copy;
int length;
char* buffer;
va_start(args, format);
va_copy(args_copy, args);
length = vsnprintf(NULL, 0, format, args);
if (length < 0) {
va_end(args);
va_end(args_copy);
return NULL;
}
buffer = (char*)allocate(alct, length + 1);
if (buffer == NULL) {
va_end(args);
va_end(args_copy);
return NULL;
}
vsprintf(buffer, format, args_copy);
va_end(args);
va_end(args_copy);
return buffer;
}
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