mirror of
https://github.com/transmission/transmission
synced 2024-12-30 19:46:56 +00:00
122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/*
|
|
* This file Copyright (C) 2008-2010 Mnemosyne LLC
|
|
*
|
|
* This file is licensed by the GPL version 2. Works owned by the
|
|
* Transmission project are granted a special exemption to clause 2(b)
|
|
* so that the bulk of its code can remain under the MIT license.
|
|
* This exemption does not extend to derived works not owned by
|
|
* the Transmission project.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef __TRANSMISSION__
|
|
#error only libtransmission should #include this header.
|
|
#endif
|
|
|
|
#ifndef _TR_PTR_ARRAY_H_
|
|
#define _TR_PTR_ARRAY_H_
|
|
|
|
#include "transmission.h"
|
|
|
|
/**
|
|
* @addtogroup utils Utilities
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief simple pointer array that resizes itself dynamically.
|
|
*/
|
|
typedef struct tr_ptrArray
|
|
{
|
|
void ** items;
|
|
int n_items;
|
|
int n_alloc;
|
|
}
|
|
tr_ptrArray;
|
|
|
|
typedef void ( *PtrArrayForeachFunc )( void * );
|
|
|
|
extern const tr_ptrArray TR_PTR_ARRAY_INIT;
|
|
|
|
/** @brief Destructor to free a tr_ptrArray's internal memory */
|
|
void tr_ptrArrayDestruct( tr_ptrArray*, PtrArrayForeachFunc func );
|
|
|
|
/** @brief Iterate through each item in a tr_ptrArray */
|
|
void tr_ptrArrayForeach( tr_ptrArray * array,
|
|
PtrArrayForeachFunc func );
|
|
|
|
/** @brief Return the nth item in a tr_ptrArray
|
|
@return the nth item in a tr_ptrArray */
|
|
void* tr_ptrArrayNth( tr_ptrArray * array,
|
|
int nth );
|
|
|
|
/** @brief Remove the last item from the array and return it
|
|
@return the pointer that's been removed from the array
|
|
@see tr_ptrArrayBack() */
|
|
void* tr_ptrArrayPop( tr_ptrArray * array );
|
|
|
|
/** @brief Return the last item in a tr_ptrArray
|
|
@return the last item in a tr_ptrArray, or NULL if the array is empty
|
|
@see tr_ptrArrayPop() */
|
|
static inline void* tr_ptrArrayBack( tr_ptrArray * array )
|
|
{
|
|
return array->n_items > 0 ? tr_ptrArrayNth( array, array->n_items - 1 )
|
|
: NULL;
|
|
}
|
|
|
|
|
|
/** @brief Peek at the array pointer and its size, for easy iteration */
|
|
void** tr_ptrArrayPeek( tr_ptrArray * array, int * size );
|
|
|
|
static inline void tr_ptrArrayClear( tr_ptrArray * a ) { a->n_items = 0; }
|
|
|
|
/** @brief Insert a pointer into the array at the specified position
|
|
@return the index of the stored pointer */
|
|
int tr_ptrArrayInsert( tr_ptrArray * array, void * insertMe, int pos );
|
|
|
|
/** @brief Append a pointer into the array */
|
|
static inline int tr_ptrArrayAppend( tr_ptrArray * array, void * appendMe )
|
|
{
|
|
return tr_ptrArrayInsert( array, appendMe, -1 );
|
|
}
|
|
|
|
static inline void** tr_ptrArrayBase( const tr_ptrArray * a )
|
|
{
|
|
return a->items;
|
|
}
|
|
|
|
/** @brief Return the number of items in the array
|
|
@return the number of items in the array */
|
|
static inline int tr_ptrArraySize( const tr_ptrArray * a )
|
|
{
|
|
return a->n_items;
|
|
}
|
|
|
|
/** @brief Return True if the array has no pointers
|
|
@return True if the array has no pointers */
|
|
static inline tr_bool tr_ptrArrayEmpty( const tr_ptrArray * a )
|
|
{
|
|
return tr_ptrArraySize(a) == 0;
|
|
}
|
|
|
|
/** @brief Insert a pointer into the array at the position determined by the sort function
|
|
@return the index of the stored pointer */
|
|
int tr_ptrArrayInsertSorted( tr_ptrArray * array,
|
|
void * value,
|
|
int compare(const void*, const void*) );
|
|
|
|
/** @brief Remove a pointer from an array sorted by the specified sort function
|
|
@return the matching pointer, or NULL if no match was found */
|
|
void* tr_ptrArrayRemoveSorted( tr_ptrArray * array,
|
|
void * value,
|
|
int compare(const void*, const void*) );
|
|
|
|
/** @brief Find a pointer from an array sorted by the specified sort function
|
|
@return the matching pointer, or NULL if no match was found */
|
|
void* tr_ptrArrayFindSorted( tr_ptrArray * array,
|
|
const void * key,
|
|
int compare(const void*, const void*) );
|
|
|
|
/* @} */
|
|
#endif
|