533 lines
12 KiB
C++
533 lines
12 KiB
C++
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod
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* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#include <stdlib.h>
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#include "sm_globals.h"
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#include "sm_stringutil.h"
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#include "HandleSys.h"
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#include "sm_trie_tpl.h"
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HandleType_t htCellTrie;
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enum TrieNodeType
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{
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TrieNode_Cell,
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TrieNode_CellArray,
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TrieNode_String,
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};
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struct SmartTrieNode
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{
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SmartTrieNode()
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{
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ptr = NULL;
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type = TrieNode_Cell;
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}
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SmartTrieNode(const SmartTrieNode &obj)
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{
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type = obj.type;
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ptr = obj.ptr;
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data = obj.data;
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data_len = obj.data_len;
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}
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SmartTrieNode & operator =(const SmartTrieNode &src)
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{
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type = src.type;
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ptr = src.ptr;
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data = src.data;
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data_len = src.data_len;
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return *this;
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}
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TrieNodeType type;
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cell_t *ptr;
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cell_t data;
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cell_t data_len;
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};
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struct CellTrie
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{
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KTrie<SmartTrieNode> trie;
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cell_t mem_usage;
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};
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class TrieHelpers :
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public SMGlobalClass,
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public IHandleTypeDispatch
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{
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public: //SMGlobalClass
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void OnSourceModAllInitialized()
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{
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htCellTrie = g_HandleSys.CreateType("Trie", this, 0, NULL, NULL, g_pCoreIdent, NULL);
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}
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void OnSourceModShutdown()
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{
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g_HandleSys.RemoveType(htCellTrie, g_pCoreIdent);
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}
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public: //IHandleTypeDispatch
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static void DestroySmartTrieNode(SmartTrieNode *pNode)
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{
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free(pNode->ptr);
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}
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void OnHandleDestroy(HandleType_t type, void *object)
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{
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CellTrie *pTrie = (CellTrie *)object;
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pTrie->trie.run_destructor(DestroySmartTrieNode);
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delete pTrie;
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}
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bool GetHandleApproxSize(HandleType_t type, void *object, unsigned int *pSize)
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{
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CellTrie *pArray = (CellTrie *)object;
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*pSize = sizeof(CellTrie) + pArray->mem_usage + pArray->trie.mem_usage();
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return true;
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}
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} s_CellTrieHelpers;
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static cell_t CreateTrie(IPluginContext *pContext, const cell_t *params)
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{
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CellTrie *pTrie = new CellTrie;
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Handle_t hndl;
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pTrie->mem_usage = 0;
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if ((hndl = g_HandleSys.CreateHandle(htCellTrie, pTrie, pContext->GetIdentity(), g_pCoreIdent, NULL))
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== BAD_HANDLE)
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{
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delete pTrie;
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return BAD_HANDLE;
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}
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return hndl;
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}
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static void UpdateNodeCells(CellTrie *pTrie, SmartTrieNode *pData, const cell_t *cells, cell_t num_cells)
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{
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if (num_cells == 1)
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{
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pData->data = *cells;
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pData->type = TrieNode_Cell;
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}
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else
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{
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pData->type = TrieNode_CellArray;
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if (pData->ptr == NULL)
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{
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pData->ptr = (cell_t *)malloc(num_cells * sizeof(cell_t));
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pData->data_len = num_cells;
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pTrie->mem_usage += (pData->data_len * sizeof(cell_t));
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}
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else if (pData->data_len < num_cells)
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{
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pData->ptr = (cell_t *)realloc(pData->ptr, num_cells * sizeof(cell_t));
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pTrie->mem_usage += (num_cells - pData->data_len) * sizeof(cell_t);
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pData->data_len = num_cells;
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}
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if (num_cells != 0)
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{
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memcpy(pData->ptr, cells, sizeof(cell_t) * num_cells);
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}
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pData->data = num_cells;
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}
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}
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static void UpdateNodeString(CellTrie *pTrie, SmartTrieNode *pData, const char *str)
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{
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size_t len = strlen(str);
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cell_t num_cells = (len + sizeof(cell_t)) / sizeof(cell_t);
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if (pData->ptr == NULL)
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{
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pData->ptr = (cell_t *)malloc(num_cells * sizeof(cell_t));
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pData->data_len = num_cells;
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pTrie->mem_usage += (pData->data_len * sizeof(cell_t));
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}
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else if (pData->data_len < num_cells)
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{
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pData->ptr = (cell_t *)realloc(pData->ptr, num_cells * sizeof(cell_t));
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pTrie->mem_usage += (num_cells - pData->data_len) * sizeof(cell_t);
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pData->data_len = num_cells;
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}
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strcpy((char *)pData->ptr, str);
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pData->data = len;
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pData->type = TrieNode_String;
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}
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static cell_t SetTrieValue(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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char *key;
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pContext->LocalToString(params[2], &key);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL)
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{
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SmartTrieNode node;
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UpdateNodeCells(pTrie, &node, ¶ms[3], 1);
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return pTrie->trie.insert(key, node) ? 1 : 0;
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}
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if (!params[4])
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{
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return 0;
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}
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UpdateNodeCells(pTrie, pNode, ¶ms[3], 1);
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return 1;
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}
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static cell_t SetTrieArray(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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if (params[4] < 0)
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{
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return pContext->ThrowNativeError("Invalid array size: %d", params[4]);
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}
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char *key;
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cell_t *array;
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pContext->LocalToString(params[2], &key);
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pContext->LocalToPhysAddr(params[3], &array);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL)
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{
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SmartTrieNode node;
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UpdateNodeCells(pTrie, &node, array, params[4]);
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if (!pTrie->trie.insert(key, node))
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{
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free(node.ptr);
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return 0;
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}
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return 1;
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}
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if (!params[4])
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{
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return 0;
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}
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UpdateNodeCells(pTrie, pNode, array, params[4]);
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return 1;
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}
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static cell_t SetTrieString(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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char *key, *val;
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pContext->LocalToString(params[2], &key);
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pContext->LocalToString(params[3], &val);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL)
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{
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SmartTrieNode node;
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UpdateNodeString(pTrie, &node, val);
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if (!pTrie->trie.insert(key, node))
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{
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free(node.ptr);
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return 0;
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}
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return 1;
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}
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if (!params[4])
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{
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return 0;
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}
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UpdateNodeString(pTrie, pNode, val);
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return 1;
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}
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static cell_t RemoveFromTrie(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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char *key;
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pContext->LocalToString(params[2], &key);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL)
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{
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return 0;
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}
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free(pNode->ptr);
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pNode->ptr = NULL;
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return pTrie->trie.remove(key) ? 1 : 0;
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}
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static cell_t ClearTrie(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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pTrie->trie.run_destructor(TrieHelpers::DestroySmartTrieNode);
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pTrie->trie.clear();
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return 1;
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}
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static cell_t GetTrieValue(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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char *key;
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cell_t *pValue;
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pContext->LocalToString(params[2], &key);
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pContext->LocalToPhysAddr(params[3], &pValue);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL)
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{
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return 0;
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}
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if (pNode->type == TrieNode_Cell)
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{
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*pValue = pNode->data;
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return 1;
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}
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return 0;
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}
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static cell_t GetTrieArray(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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if (params[4] < 0)
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{
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return pContext->ThrowNativeError("Invalid array size: %d", params[4]);
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}
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char *key;
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cell_t *pValue, *pSize;
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pContext->LocalToString(params[2], &key);
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pContext->LocalToPhysAddr(params[3], &pValue);
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pContext->LocalToPhysAddr(params[5], &pSize);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL
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|| pNode->type != TrieNode_CellArray)
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{
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return 0;
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}
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if (pNode->ptr == NULL)
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{
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*pSize = 0;
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return 1;
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}
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if (pNode->data > params[4])
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{
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*pSize = params[4];
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}
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else if (params[4] != 0)
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{
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*pSize = pNode->data;
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}
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else
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{
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return 1;
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}
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memcpy(pValue, pNode->ptr, sizeof(cell_t) * pSize[0]);
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return 1;
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}
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static cell_t GetTrieString(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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if (params[4] < 0)
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{
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return pContext->ThrowNativeError("Invalid buffer size: %d", params[4]);
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}
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char *key;
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cell_t *pSize;
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pContext->LocalToString(params[2], &key);
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pContext->LocalToPhysAddr(params[5], &pSize);
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SmartTrieNode *pNode;
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if ((pNode = pTrie->trie.retrieve(key)) == NULL
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|| pNode->type != TrieNode_String)
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{
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return 0;
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}
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if (pNode->ptr == NULL)
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{
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*pSize = 0;
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pContext->StringToLocal(params[3], params[4], "");
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return 1;
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}
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size_t written;
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pContext->StringToLocalUTF8(params[3], params[4], (char *)pNode->ptr, &written);
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*pSize = (cell_t)written;
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return 1;
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}
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static cell_t GetTrieSize(IPluginContext *pContext, const cell_t *params)
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{
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Handle_t hndl;
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CellTrie *pTrie;
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HandleError err;
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HandleSecurity sec = HandleSecurity(pContext->GetIdentity(), g_pCoreIdent);
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hndl = params[1];
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if ((err = g_HandleSys.ReadHandle(hndl, htCellTrie, &sec, (void **)&pTrie))
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!= HandleError_None)
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{
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return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
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}
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return pTrie->trie.size();
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}
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REGISTER_NATIVES(trieNatives)
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{
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{"ClearTrie", ClearTrie},
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{"CreateTrie", CreateTrie},
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{"GetTrieArray", GetTrieArray},
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{"GetTrieString", GetTrieString},
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{"GetTrieValue", GetTrieValue},
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{"RemoveFromTrie", RemoveFromTrie},
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{"SetTrieArray", SetTrieArray},
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{"SetTrieString", SetTrieString},
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{"SetTrieValue", SetTrieValue},
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{"GetTrieSize", GetTrieSize},
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{NULL, NULL},
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};
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