/**

 * vim: set ts=4 :

 * =============================================================================

 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.

 * =============================================================================

 *

 * This file is part of the SourceMod/SourcePawn SDK.

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, version 3.0, as published by the

 * Free Software Foundation.

 * 

 * 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, see <http://www.gnu.org/licenses/>.

 *

 * As a special exception, AlliedModders LLC gives you permission to link the

 * code of this program (as well as its derivative works) to "Half-Life 2," the

 * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

 * by the Valve Corporation.  You must obey the GNU General Public License in

 * all respects for all other code used.  Additionally, AlliedModders LLC grants

 * this exception to all derivative works.  AlliedModders LLC defines further

 * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

 * or <http://www.sourcemod.net/license.php>.

 *

 * Version: $Id$

 */

#if defined _adt_array_included

 #endinput

#endif

#define _adt_array_included

/**

 * Given a maximum string size (including the null terminator), 

 * returns the number of cells required to fit that string.

 *

 * @param size			Number of bytes.

 * @return				Minimum number of cells required to fit the byte count.

 */

stock ByteCountToCells(size)

{

	if (!size)

	{

		return 1;

	}

	return (size + 3) / 4;

}

/**

 * Creates a dynamic global cell array.  While slower than a normal array,

 * it can be used globally AND dynamically, which is otherwise impossible.

 * 

 * The contents of the array are uniform; i.e. storing a string at index X 

 * and then retrieving it as an integer is NOT the same as StringToInt()!

 * The "blocksize" determines how many cells each array slot has; it cannot

 * be changed after creation.

 *

 * @param blocksize		The number of cells each member of the array can 

 *						hold.  For example, 32 cells is equivalent to:

 *						new Array[X][32]

 * @param startsize		Initial size of the array.  Note that data will 

 *						NOT be auto-intialized.

 * @return				New Handle to the array object.

 */

native Handle:CreateArray(blocksize=1, startsize=0);

/**

 * Clears an array of all entries.  This is the same as ResizeArray(0).

 *

 * @param array			Array Handle.

 * @noreturn

 * @error				Invalid Handle.

 */

native ClearArray(Handle:array);

/**

 * Resizes an array.  If the size is smaller than the current size,

 * the array is truncated.

 *

 * @param array			Array Handle.

 * @param newsize		New size.

 * @noreturn

 * @error				Invalid Handle or out of memory.

 */

native bool:ResizeArray(Handle:array, newsize);

/**

 * Returns the array size.

 *

 * @param array			Array Handle.

 * @return				Number of elements in the array.

 * @error				Invalid Handle.

 */

native GetArraySize(Handle:array);

/**

 * Pushes a value onto the end of an array, adding a new index.

 *

 * This may safely be used even if the array has a blocksize

 * greater than 1.

 *

 * @param array			Array Handle.

 * @param value			Value to push.

 * @return				Index of the new entry.

 * @error				Invalid Handle or out of memory.

 */

native PushArrayCell(Handle:array, any:value);

/**

 * Pushes a string onto the end of an array, truncating it

 * if it is too big.

 *

 * @param array			Array Handle.

 * @param value			String to push.

 * @return				Index of the new entry.

 * @error				Invalid Handle or out of memory.

 */

native PushArrayString(Handle:array, const String:value[]);

/**

 * Pushes an array of cells onto the end of an array.  The cells

 * are pushed as a block (i.e. the entire array sits at the index),

 * rather than pushing each cell individually.

 *

 * @param array			Array Handle.

 * @param values		Block of values to copy.

 * @param size			If not set, the number of elements copied from the array

 *						will be equal to the blocksize.  If set higher than the 

 *						blocksize, the operation will be truncated.

 * @return				Index of the new entry.

 * @error				Invalid Handle or out of memory.

 */

native PushArrayArray(Handle:array, const values[], size=-1);

/**

 * Retrieves a cell value from an array.

 *

 * @param array			Array Handle.

 * @param index			Index in the array.

 * @param block			Optionally specify which block to read from

 *						(useful if the blocksize > 0).

 * @param asChar		Optionally read as a byte instead of a cell.

 * @return				Value read.

 * @error				Invalid Handle, invalid index, or invalid block.

 */

native any:GetArrayCell(Handle:array, index, block=0, bool:asChar=false);

/**

 * Retrieves a string value from an array.

 *

 * @param array			Array Handle.

 * @param index			Index in the array.

 * @param buffer		Buffer to copy to.

 * @param maxlength		Maximum size of the buffer.

 * @return				Number of characters copied.

 * @error				Invalid Handle or invalid index.

 */

native GetArrayString(Handle:array, index, String:buffer[], maxlength);

/**

 * Retrieves an array of cells from an array.

 *

 * @param array			Array Handle.

 * @param index			Index in the array.

 * @param buffer		Buffer to store the array in.

 * @param size			If not set, assumes the buffer size is equal to the

 *						blocksize.  Otherwise, the size passed is used.

 * @return				Number of cells copied.

 * @error				Invalid Handle or invalid index.

 */

native GetArrayArray(Handle:array, index, buffer[], size=-1);

/**

 * Sets a cell value in an array.

 *

 * @param array			Array Handle.

 * @param index			Index in the array.

 * @param value			Cell value to set.

 * @param block			Optionally specify which block to write to

 *						(useful if the blocksize > 0).

 * @param asChar		Optionally set as a byte instead of a cell.

 * @noreturn

 * @error				Invalid Handle, invalid index, or invalid block.

 */

native any:SetArrayCell(Handle:array, index, any:value, block=0, bool:asChar=false);

/**

 * Sets a string value in an array.

 *

 * @param array			Array Handle.

 * @param index			Index in the array.

 * @param value			String value to set.

 * @return				Number of characters copied.

 * @error				Invalid Handle or invalid index.

 */

native SetArrayString(Handle:array, index, const String:buffer[]);

/**

 * Sets an array of cells in an array.

 *

 * @param array			Array Handle.

 * @param index			Index in the array.

 * @param buffer		Array to copy.

 * @param size			If not set, assumes the buffer size is equal to the

 *						blocksize.  Otherwise, the size passed is used.

 * @return				Number of cells copied.

 * @error				Invalid Handle or invalid index.

 */

native SetArrayArray(Handle:array, index, const values[], size=-1);

/**

 * Shifts an array up.  All array contents after and including the given 

 * index are shifted up by one, and the given index is then "free."  

 * After shifting, the contents of the given index is undefined.

 *

 * @param array			Array Handle.

 * @param index			Index in the array to shift up from.

 * @noreturn

 * @error				Invalid Handle or invalid index.

 */

native ShiftArrayUp(Handle:array, index);

/**

 * Removes an array index, shifting the entire array down from that position 

 * on.  For example, if item 8 of 10 is removed, the last 3 items will then be

 * (6,7,8) instead of (7,8,9), and all indexes before 8 will remain unchanged.

 *

 * @param array			Array Handle.

 * @param index			Index in the array to remove at.

 * @noreturn

 * @error				Invalid Handle or invalid index.

 */

native RemoveFromArray(Handle:array, index);

/**

 * Swaps two items in the array.

 *

 * @param array			Array Handle.

 * @param index1		First index.

 * @param index2		Second index.

 * @noreturn

 * @error				Invalid Handle or invalid index.

 */

native SwapArrayItems(Handle:array, index1, index2);