93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
#include "capwap.h"
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#include "capwap_array.h"
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/* */
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struct capwap_array* capwap_array_create(unsigned short itemsize, unsigned long initcount) {
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struct capwap_array* array;
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ASSERT(itemsize > 0);
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array = (struct capwap_array*)capwap_alloc(sizeof(struct capwap_array));
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if (!array) {
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capwap_outofmemory();
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}
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memset(array, 0, sizeof(struct capwap_array));
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array->itemsize = itemsize;
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if (initcount > 0) {
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capwap_array_resize(array, initcount);
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}
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return array;
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}
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/* */
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struct capwap_array* capwap_array_clone(struct capwap_array* array) {
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unsigned long i;
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struct capwap_array* clone;
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ASSERT (array != NULL);
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/* Clone array e items */
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clone = capwap_array_create(array->itemsize, array->count);
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for (i = 0; i < array->count; i++) {
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memcpy(capwap_array_get_item_pointer(clone, i), capwap_array_get_item_pointer(array, i), array->itemsize);
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}
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return clone;
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}
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/* */
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void capwap_array_free(struct capwap_array* array) {
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ASSERT(array != NULL);
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if (array->buffer) {
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capwap_free(array->buffer);
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}
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capwap_free(array);
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}
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/* */
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void* capwap_array_get_item_pointer(struct capwap_array* array, unsigned long pos) {
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ASSERT(array != NULL);
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ASSERT((array->count == 0) || (array->buffer != NULL));
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if (pos >= array->count) {
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capwap_array_resize(array, pos + 1);
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}
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return (void*)(((char*)array->buffer) + array->itemsize * pos);
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}
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/* */
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void capwap_array_resize(struct capwap_array* array, unsigned long count) {
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void* newbuffer = NULL;
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ASSERT(array != NULL);
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ASSERT(array->itemsize > 0);
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if (array->count == count) {
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return;
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}
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if (count > 0) {
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newbuffer = capwap_alloc(array->itemsize * count);
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if (!newbuffer) {
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capwap_outofmemory();
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}
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}
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if (array->buffer) {
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if (newbuffer != NULL) {
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memcpy(newbuffer, array->buffer, array->itemsize * min(array->count, count));
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}
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capwap_free(array->buffer);
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}
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array->buffer = newbuffer;
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array->count = count;
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}
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