Initial commit

Torque/SDK/engine/core/resDictionary.cc

@@ -0,0 +1,128 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#include "platform/platform.h"
+#include "core/resManager.h"
+#include "core/tAlgorithm.h"
+
+//----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+
+ResDictionary::ResDictionary()
+{
+   entryCount = 0;
+   hashTableSize = 1023; //DefaultTableSize;
+   hashTable = new ResourceObject *[hashTableSize];
+   S32 i;
+   for(i = 0; i < hashTableSize; i++)
+      hashTable[i] = NULL;
+}
+
+ResDictionary::~ResDictionary()
+{
+   // we assume the resources are purged before we destroy
+   // the dictionary
+
+   delete[] hashTable;
+}
+
+S32 ResDictionary::hash(StringTableEntry path, StringTableEntry file)
+{
+   return ((S32)((((dsize_t)path) >> 2) + (((dsize_t)file) >> 2) )) % hashTableSize;
+}
+
+void ResDictionary::insert(ResourceObject *obj, StringTableEntry path, StringTableEntry file)
+{
+   obj->name = file;
+   obj->path = path;
+
+   S32 idx = hash(path, file);
+   obj->nextEntry = hashTable[idx];
+   hashTable[idx] = obj;
+   entryCount++;
+
+   if(entryCount > hashTableSize) {
+      ResourceObject *head = NULL, *temp, *walk;
+      for(idx = 0; idx < hashTableSize;idx++) {
+         walk = hashTable[idx];
+         while(walk)
+         {
+            temp = walk->nextEntry;
+            walk->nextEntry = head;
+            head = walk;
+            walk = temp;
+         }
+      }
+      delete[] hashTable;
+      hashTableSize = 2 * hashTableSize - 1;
+      hashTable = new ResourceObject *[hashTableSize];
+      for(idx = 0; idx < hashTableSize; idx++)
+         hashTable[idx] = NULL;
+      walk = head;
+      while(walk)
+      {
+         temp = walk->nextEntry;
+         idx = hash(walk);
+         walk->nextEntry = hashTable[idx];
+         hashTable[idx] = walk;
+         walk = temp;
+      }
+   }
+}
+
+ResourceObject* ResDictionary::find(StringTableEntry path, StringTableEntry name)
+{
+   for(ResourceObject *walk = hashTable[hash(path, name)]; walk; walk = walk->nextEntry)
+      if(walk->name == name && walk->path == path)
+         return walk;
+   return NULL;
+}
+
+ResourceObject* ResDictionary::find(StringTableEntry path, StringTableEntry name, StringTableEntry zipPath, StringTableEntry zipName)
+{
+   for(ResourceObject *walk = hashTable[hash(path, name)]; walk; walk = walk->nextEntry)
+      if(walk->name == name && walk->path == path && walk->zipName == zipName && walk->zipPath == zipPath)
+         return walk;
+   return NULL;
+}
+
+ResourceObject* ResDictionary::find(StringTableEntry path, StringTableEntry name, U32 flags)
+{
+   for(ResourceObject *walk = hashTable[hash(path, name)]; walk; walk = walk->nextEntry)
+      if(walk->name == name && walk->path == path && U32(walk->flags) == flags)
+         return walk;
+   return NULL;
+}
+
+void ResDictionary::pushBehind(ResourceObject *resObj, S32 flagMask)
+{
+   remove(resObj);
+   entryCount++;
+   ResourceObject **walk = &hashTable[hash(resObj)];
+   for(; *walk; walk = &(*walk)->nextEntry)
+   {
+      if(!((*walk)->flags & flagMask))
+      {
+         resObj->nextEntry = *walk;
+         *walk = resObj;
+         return;
+      }
+   }
+   resObj->nextEntry = NULL;
+   *walk = resObj;
+}
+
+void ResDictionary::remove(ResourceObject *resObj)
+{
+   for(ResourceObject **walk = &hashTable[hash(resObj)]; *walk; walk = &(*walk)->nextEntry)
+   {
+      if(*walk == resObj)
+      {
+         entryCount--;
+         *walk = resObj->nextEntry;
+         return;
+      }
+   }
+}