port

cpl_list.h File Reference

#include "cpl_port.h"

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Classes

struct  _CPLList

Typedefs

typedef _CPLList CPLList

Functions

CPLList * CPLListAppend (CPLList *psList, void *pData)
CPLList * CPLListInsert (CPLList *psList, void *pData, int nPosition)
CPLList * CPLListGetLast (CPLList *psList)
CPLList * CPLListGet (CPLList *psList, int nPosition)
int CPLListCount (CPLList *psList)
CPLList * CPLListRemove (CPLList *psList, int nPosition)
void CPLListDestroy (CPLList *psList)
CPLList * CPLListGetNext (CPLList *psElement)
void * CPLListGetData (CPLList *psElement)

Detailed Description

Simplest list implementation. List contains only pointers to stored objects, not objects itself. All operations regarding allocation and freeing memory for objects should be performed by the caller.

Typedef Documentation

typedef struct _CPLList CPLList

List element structure.

Function Documentation

CPLList* CPLListAppend ( CPLList *  psList,
void *  pData 
)

Append an object list and return a pointer to the modified list. If the input list is NULL, then a new list is created.

Parameters:
psList pointer to list head.
pData pointer to inserted data object. May be NULL.
Returns:
pointer to the head of modified list.

int CPLListCount ( CPLList *  psList  ) 

Return the number of elements in a list.

Parameters:
psList pointer to list head.
Returns:
number of elements in a list.

void CPLListDestroy ( CPLList *  psList  ) 

Destroy a list. Caller responsible for freeing data objects contained in list elements.

Parameters:
psList pointer to list head.

CPLList* CPLListGet ( CPLList *  psList,
int  nPosition 
)

Return the pointer to the specified element in a list.

Parameters:
psList pointer to list head.
Returns:
pointer to the specified element in a list.

void* CPLListGetData ( CPLList *  psElement  ) 

Return pointer to the data object contained in given list element.

Parameters:
psElement pointer to list element.
Returns:
pointer to the data object contained in given list element.

CPLList* CPLListGetLast ( CPLList *  psList  ) 

Return the pointer to last element in a list.

Parameters:
psList pointer to list head.
Returns:
pointer to last element in a list.

CPLList* CPLListGetNext ( CPLList *  psElement  ) 

Return the pointer to next element in a list.

Parameters:
psElement pointer to list element.
Returns:
pointer to the list element preceded by the given element.

CPLList* CPLListInsert ( CPLList *  psList,
void *  pData,
int  nPosition 
)

Insert an object into list at specified position (zero based). If the input list is NULL, then a new list is created.

Parameters:
psList pointer to list head.
pData pointer to inserted data object. May be NULL.
nPosition position number to insert an object.
Returns:
pointer to the head of modified list.

CPLList* CPLListRemove ( CPLList *  psList,
int  nPosition 
)

Remove the element from the specified position (zero based) in a list. Data object contained in removed element must be freed by the caller first.

Parameters:
psList pointer to list head.
nPosition position number to delet an element.
Returns:
pointer to the head of modified list.

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