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#include "memlist.h"
#include <string.h>
#include <stdlib.h>
struct _tagLIST
{
unsigned int uiCount;
unsigned int uiCapacity;
void **apStorage;
};
// -----------------------------------------------------------------------------
// Interface
// -----------------------------------------------------------------------------
TYP_LIST *List_Init(unsigned int uiCapacity)
{
TYP_LIST *pstHandle;
pstHandle = (TYP_LIST *)malloc(sizeof(TYP_LIST));
if (!pstHandle) return NULL;
pstHandle->uiCount = 0;
pstHandle->uiCapacity = uiCapacity;
if (uiCapacity == 0)
pstHandle->apStorage = NULL;
else
{
pstHandle->apStorage = (void **)malloc(sizeof(void *)*uiCapacity);
if (!pstHandle->apStorage)
{
free(pstHandle);
return NULL;
}
}
return pstHandle;
}
// -----------------------------------------------------------------------------
void List_Exit(TYP_LIST *pstHandle)
{
if (pstHandle->apStorage)
free (pstHandle->apStorage);
free (pstHandle);
}
// -----------------------------------------------------------------------------
BOOL List_Push(TYP_LIST *pstHandle, void *pItem)
{
return List_InsertElementAt(pstHandle, pItem,pstHandle->uiCount);
}
// -----------------------------------------------------------------------------
void *List_Pop (TYP_LIST *pstHandle)
{
if (pstHandle->uiCount)
return List_RemoveElementAt(pstHandle ,pstHandle->uiCount-1);
else return NULL;
}
// -----------------------------------------------------------------------------
BOOL List_ReplaceElementAt(TYP_LIST *pstHandle, void *pItem, unsigned int uiPos)
{
if (uiPos >= pstHandle->uiCount) return NULL;
pstHandle->apStorage[uiPos]=pItem;
return TRUE;
}
// -----------------------------------------------------------------------------
BOOL List_InsertElementAt(TYP_LIST *pstHandle, void *pItem, unsigned int uiPos)
{
unsigned int uiStep;
void **apNewStorage;
if (uiPos > pstHandle->uiCount)
uiPos = pstHandle->uiCount;
if (pstHandle->uiCount >= pstHandle->uiCapacity)
{
uiStep = pstHandle->uiCount*2;
if (uiStep < 8) uiStep = 8;
if (!pstHandle->apStorage)
apNewStorage = (void **)malloc(sizeof(void *)*uiStep);
else
apNewStorage = realloc (pstHandle->apStorage, sizeof(void *)*uiStep);
if (!apNewStorage) return FALSE;
pstHandle->apStorage = apNewStorage;
pstHandle->uiCapacity = uiStep;
}
if (uiPos<pstHandle->uiCount)
memmove(&pstHandle->apStorage[uiPos+1], &pstHandle->apStorage[uiPos], (pstHandle->uiCount-uiPos)*sizeof(void*));
pstHandle->apStorage[uiPos] = pItem;
pstHandle->uiCount++;
return TRUE;
}
// -----------------------------------------------------------------------------
void *List_RemoveElementAt(TYP_LIST *pstHandle, unsigned int uiPos)
{
void *pRet;
pRet = pstHandle->apStorage[uiPos];
if (uiPos<pstHandle->uiCount-1)
memmove (&pstHandle->apStorage[uiPos], &pstHandle->apStorage[uiPos+1], (pstHandle->uiCount-uiPos-1)*sizeof(void*));
pstHandle->uiCount--;
return pRet;
}
// -----------------------------------------------------------------------------
unsigned int List_Count(TYP_LIST *pstHandle)
{
return pstHandle->uiCount;
}
// -----------------------------------------------------------------------------
void *List_ElementAt(TYP_LIST *pstHandle,unsigned int uiPos)
{
if (uiPos >= pstHandle->uiCount) return NULL;
return pstHandle->apStorage[uiPos];
}
// -----------------------------------------------------------------------------
void *List_Top(TYP_LIST *pstHandle)
{
if (pstHandle->uiCount)
return List_ElementAt (pstHandle, pstHandle->uiCount-1);
else return NULL;
}
// -----------------------------------------------------------------------------
void List_Sort(TYP_LIST *pstHandle, int (*pFunc)(const void*,const void*))
{
qsort(pstHandle->apStorage,pstHandle->uiCount,sizeof(void *),pFunc);
}
// -----------------------------------------------------------------------------
void List_FreeElements(TYP_LIST *pstHandle)
{
void *pEntry;
while (pEntry = List_Pop(pstHandle))
free (pEntry);
}
// -----------------------------------------------------------------------------
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