/**
* scols_line_alloc_cells:
* @ln: a pointer to a struct libscols_line instance
* @n: the number of elements
*
* Allocates space for @n cells. This function is optional,
* and libsmartcols automatically allocates necessary cells
* according to number of columns in the table when you add
* the line to the table. See scols_table_add_line().
*
* Returns: 0, a negative value in case of an error.
*/
int scols_line_alloc_cells(struct libscols_line *ln, size_t n)
{
struct libscols_cell *ce;
if (!ln)
return -EINVAL;
if (ln->ncells == n)
return 0;
if (!n) {
scols_line_free_cells(ln);
return 0;
}
DBG(LINE, ul_debugobj(ln, "alloc %zu cells", n));
ce = realloc(ln->cells, n * sizeof(struct libscols_cell));
if (!ce)
return -errno;
if (n > ln->ncells)
memset(ce + ln->ncells, 0,
(n - ln->ncells) * sizeof(struct libscols_cell));
ln->cells = ce;
ln->ncells = n;
return 0;
}
/**
* scols_line_alloc_cells:
* @ln: a pointer to a struct libscols_line instance
* @n: the number of elements
*
* Allocates space for @n cells. This function is optional,
* and libsmartcols automatically allocates necessary cells
* according to number of columns in the table when you add
* the line to the table. See scols_table_add_line().
*
* Returns: 0, a negative value in case of an error.
*/
int scols_line_alloc_cells(struct libscols_line *ln, size_t n)
{
struct libscols_cell *ce;
assert(ln);
if (!ln)
return -EINVAL;
if (ln->ncells == n)
return 0;
if (!n) {
scols_line_free_cells(ln);
return 0;
}
ce = realloc(ln->cells, n * sizeof(struct libscols_cell));
if (!ce)
return -errno;
if (n > ln->ncells)
memset(ce + ln->ncells, 0,
(n - ln->ncells) * sizeof(struct libscols_cell));
ln->cells = ce;
ln->ncells = n;
return 0;
}
/**
* scols_unref_line:
* @ln: a pointer to a struct libscols_line instance
*
* Decreases the refcount of @ln. When the count falls to zero, the instance
* is automatically deallocated.
*/
void scols_unref_line(struct libscols_line *ln)
{
if (ln && --ln->refcount <= 0) {
DBG(CELL, ul_debugobj(ln, "dealloc"));
list_del(&ln->ln_lines);
list_del(&ln->ln_children);
scols_line_free_cells(ln);
free(ln->color);
free(ln);
return;
}
}
/**
* scols_unref_line:
* @ln: a pointer to a struct libscols_line instance
*
* Decreases the refcount of @ln.
*/
void scols_unref_line(struct libscols_line *ln)
{
if (ln && --ln->refcount <= 0) {
list_del(&ln->ln_lines);
list_del(&ln->ln_children);
scols_line_free_cells(ln);
free(ln->color);
free(ln);
return;
}
}
