| /* |
| * (C) 2006-2008 by Pablo Neira Ayuso <pablo@netfilter.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include "vector.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| struct vector { |
| char *data; |
| unsigned int cur_elems; |
| unsigned int max_elems; |
| size_t size; |
| }; |
| |
| #define DEFAULT_VECTOR_MEMBERS 8 |
| #define DEFAULT_VECTOR_GROWTH 8 |
| |
| struct vector *vector_create(size_t size) |
| { |
| struct vector *v; |
| |
| v = calloc(sizeof(struct vector), 1); |
| if (v == NULL) |
| return NULL; |
| |
| v->size = size; |
| v->cur_elems = 0; |
| v->max_elems = DEFAULT_VECTOR_MEMBERS; |
| |
| v->data = calloc(size * DEFAULT_VECTOR_MEMBERS, 1); |
| if (v->data == NULL) { |
| free(v); |
| return NULL; |
| } |
| |
| return v; |
| } |
| |
| void vector_destroy(struct vector *v) |
| { |
| free(v->data); |
| free(v); |
| } |
| |
| int vector_add(struct vector *v, void *data) |
| { |
| if (v->cur_elems >= v->max_elems) { |
| v->max_elems += DEFAULT_VECTOR_GROWTH; |
| v->data = realloc(v->data, v->max_elems * v->size); |
| if (v->data == NULL) { |
| v->max_elems -= DEFAULT_VECTOR_GROWTH; |
| return -1; |
| } |
| } |
| memcpy(v->data + (v->size * v->cur_elems), data, v->size); |
| v->cur_elems++; |
| return 0; |
| } |
| |
| int vector_iterate(struct vector *v, |
| const void *data, |
| int (*fcn)(const void *a, const void *b)) |
| { |
| unsigned int i; |
| |
| for (i=0; i<v->cur_elems; i++) { |
| char *ptr = v->data + (v->size * i); |
| if (fcn(ptr, data)) |
| return 1; |
| } |
| return 0; |
| } |