#include <merror.h>
#include <string.h>
#include <stdlib.h>

#include "asm.h"

int strtab_get_str(struct str_table *strtab, const char *str, size_t *res)
{
	for (size_t i = 0; i < strtab->size; i ++) {
		if (strcmp(strtab->ptr + i, str) == 0) {
			if (res != NULL)
				*res = i;
			return M_SUCCESS;
		}
	}

	return M_ERROR;
}

int strtab_write_str(struct str_table *strtab, const char *str, size_t *res)
{
	if (strtab_get_str(strtab, str, res) == M_SUCCESS)
		return M_SUCCESS;

	size_t len = strlen(str);
	char *new = realloc(strtab->ptr, strtab->size + len + 1);
	if (new == NULL)
		return M_ERROR;
	strtab->ptr = new;
	memcpy(strtab->ptr + strtab->size, str, len + 1);

	if (res != NULL)
		*res = strtab->size;

	strtab->size += len + 1;
	return M_SUCCESS;
}

int strtab_init(struct str_table *strtab)
{
	strtab->size = 1;
	strtab->ptr = malloc(1);
	if (strtab->ptr == NULL) {
		ERROR("cannot alloc");
		return M_ERROR;
	}
	*strtab->ptr = '\0';
	return M_SUCCESS;
}

void strtab_free(struct str_table *strtab)
{
	free(strtab->ptr);
}