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#include "common.h"
#include "smrt_arena.h"
#include "log.h"
#include "string.h"
#include <string.h>
strng_t *strng_new(smrt_arena_t *arena, u64 size) {
strng_t *s = smrt_arena_push(arena, sizeof(strng_t) + size, true);
if (!s) {
log_error("Failed to allocate strng");
return NULL;
}
s->alloc_size = size;
return s;
}
strng_t *strng_from(smrt_arena_t *arena, char const *c) {
u64 size = strlen(c);
strng_t *s = strng_new(arena, size);
if (!s) {
log_error("Failed to allocate strng");
return NULL;
}
memcpy((u8*)s+STRNG_BASE_POS, c, size);
s->len = size;
return s;
}
strng_t *strng_dup(smrt_arena_t *arena, strng_t const *src) {
u64 size = src->len + sizeof(strng_t);
strng_t *string = smrt_arena_push(arena, size, true);
if (!string) {
log_error("Failed to allocate strng");
return NULL;
}
string->alloc_size = src->len;
memcpy((u8*)string+STRNG_BASE_POS, (u8*)src+STRNG_BASE_POS, src->len);
string->len = src->len;
return string;
}
char *strng_str(smrt_arena_t *arena, strng_t const *string) {
char *s = SMRTA_ALLOC_ARRAY(arena, char, string->len+1);
if (!s) {
log_error("Failed to allocate char*");
return NULL;
} else if (string->len == 0) {
return s;
}
memcpy(s, (u8*)string+STRNG_BASE_POS, string->len);
return s;
}
i32 strng_set(strng_t *string, char const *c) {
u64 size = strlen(c);
if (string->alloc_size < size) return -1;
memcpy((u8*)string+STRNG_BASE_POS, c, size);
string->len = size;
return 0;
}
void strng_clear(strng_t *string) {
memset((u8*)string+STRNG_BASE_POS, 0, string->len);
string->len = 0;
}
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