/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2009 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#include "OgreStableHeaders.h"
#include "OgreResourceGroupManager.h"
#include "OgreException.h"
#include "OgreArchive.h"
#include "OgreArchiveManager.h"
#include "OgreLogManager.h"
#include "OgreScriptLoader.h"
#include "OgreSceneManager.h"

namespace Ogre {

    //-----------------------------------------------------------------------
    template<> ResourceGroupManager* Singleton<ResourceGroupManager>::ms_Singleton = 0;
    ResourceGroupManager* ResourceGroupManager::getSingletonPtr(void)
    {
        return ms_Singleton;
    }
    ResourceGroupManager& ResourceGroupManager::getSingleton(void)
    {  
        assert( ms_Singleton );  return ( *ms_Singleton );  
    }
	String ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME = "General";
	String ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME = "Internal";
	String ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME = "Autodetect";
	// A reference count of 3 means that only RGM and RM have references
	// RGM has one (this one) and RM has 2 (by name and by handle)
	size_t ResourceGroupManager::RESOURCE_SYSTEM_NUM_REFERENCE_COUNTS = 3;
    //-----------------------------------------------------------------------
    //-----------------------------------------------------------------------
    ResourceGroupManager::ResourceGroupManager()
        : mLoadingListener(0), mCurrentGroup(0)
    {
        // Create the 'General' group
        createResourceGroup(DEFAULT_RESOURCE_GROUP_NAME);
        // Create the 'Internal' group
        createResourceGroup(INTERNAL_RESOURCE_GROUP_NAME);
		// Create the 'Autodetect' group (only used for temp storage)
		createResourceGroup(AUTODETECT_RESOURCE_GROUP_NAME);
        // default world group to the default group
        mWorldGroupName = DEFAULT_RESOURCE_GROUP_NAME;
    }
    //-----------------------------------------------------------------------
    ResourceGroupManager::~ResourceGroupManager()
    {
        // delete all resource groups
        ResourceGroupMap::iterator i, iend;
        iend = mResourceGroupMap.end();
        for (i = mResourceGroupMap.begin(); i != iend; ++i)
        {
			deleteGroup(i->second);
        }
        mResourceGroupMap.clear();
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::createResourceGroup(const String& name, const bool inGlobalPool /* = true */)
    {
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().logMessage("Creating resource group " + name);
        if (getResourceGroup(name))
        {
            OGRE_EXCEPT(Exception::ERR_DUPLICATE_ITEM, 
                "Resource group with name '" + name + "' already exists!", 
                "ResourceGroupManager::createResourceGroup");
        }
        ResourceGroup* grp = OGRE_NEW_T(ResourceGroup, MEMCATEGORY_RESOURCE)();
		grp->groupStatus = ResourceGroup::UNINITIALSED;
        grp->name = name;
		grp->inGlobalPool = inGlobalPool;
        grp->worldGeometrySceneManager = 0;
        mResourceGroupMap.insert(
            ResourceGroupMap::value_type(name, grp));
    }
	//-----------------------------------------------------------------------
	void ResourceGroupManager::initialiseResourceGroup(const String& name)
	{
		OGRE_LOCK_AUTO_MUTEX
		LogManager::getSingleton().logMessage("Initialising resource group " + name);
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::initialiseResourceGroup");
		}
		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		if (grp->groupStatus == ResourceGroup::UNINITIALSED)
		{
			// in the process of initialising
			grp->groupStatus = ResourceGroup::INITIALISING;
			// Set current group
			parseResourceGroupScripts(grp);
			mCurrentGroup = grp;
			LogManager::getSingleton().logMessage("Creating resources for group " + name);
			createDeclaredResources(grp);
			grp->groupStatus = ResourceGroup::INITIALISED;
			LogManager::getSingleton().logMessage("All done");
			// Reset current group
			mCurrentGroup = 0;
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::initialiseAllResourceGroups(void)
	{
		OGRE_LOCK_AUTO_MUTEX

		// Intialise all declared resource groups
		ResourceGroupMap::iterator i, iend;
		iend = mResourceGroupMap.end();
		for (i = mResourceGroupMap.begin(); i != iend; ++i)
		{
			ResourceGroup* grp = i->second;
			OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex
			if (grp->groupStatus == ResourceGroup::UNINITIALSED)
			{
				// in the process of initialising
				grp->groupStatus = ResourceGroup::INITIALISING;
				// Set current group
				mCurrentGroup = grp;
				parseResourceGroupScripts(grp);
				LogManager::getSingleton().logMessage("Creating resources for group " + i->first);
				createDeclaredResources(grp);
				grp->groupStatus = ResourceGroup::INITIALISED;
				LogManager::getSingleton().logMessage("All done");
				// Reset current group
				mCurrentGroup = 0;
			}
		}
	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::prepareResourceGroup(const String& name, 
		bool prepareMainResources, bool prepareWorldGeom)
    {
		// Can only bulk-load one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().stream()
			<< "Preparing resource group '" << name << "' - Resources: "
			<< prepareMainResources << " World Geometry: " << prepareWorldGeom;
		// load all created resources
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::prepareResourceGroup");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex 
		// Set current group
		mCurrentGroup = grp;

		// Count up resources for starting event
		ResourceGroup::LoadResourceOrderMap::iterator oi;
		size_t resourceCount = 0;
		if (prepareMainResources)
		{
			for (oi = grp->loadResourceOrderMap.begin(); oi != grp->loadResourceOrderMap.end(); ++oi)
			{
				resourceCount += oi->second->size();
			}
		}
        // Estimate world geometry size
        if (grp->worldGeometrySceneManager && prepareWorldGeom)
        {
            resourceCount += 
				grp->worldGeometrySceneManager->estimateWorldGeometry(
					grp->worldGeometry);
        }

		fireResourceGroupPrepareStarted(name, resourceCount);

		// Now load for real
		if (prepareMainResources)
		{
			for (oi = grp->loadResourceOrderMap.begin(); 
				oi != grp->loadResourceOrderMap.end(); ++oi)
			{
				size_t n = 0;
				LoadUnloadResourceList::iterator l = oi->second->begin();
				while (l != oi->second->end())
				{
					ResourcePtr res = *l;

					// Fire resource events no matter whether resource needs preparing
                    // or not. This ensures that the number of callbacks
					// matches the number originally estimated, which is important
					// for progress bars.
					fireResourcePrepareStarted(res);

					// If preparing one of these resources cascade-prepares another resource, 
					// the list will get longer! But these should be prepared immediately
					// Call prepare regardless, already prepared or loaded resources will be skipped
					res->prepare();

					fireResourcePrepareEnded();

					++n;

					// Did the resource change group? if so, our iterator will have
					// been invalidated
					if (res->getGroup() != name)
					{
						l = oi->second->begin();
						std::advance(l, n);
					}
					else
					{
						++l;
					}
				}
			}
		}
        // Load World Geometry
        if (grp->worldGeometrySceneManager && prepareWorldGeom)
        {
            grp->worldGeometrySceneManager->prepareWorldGeometry(
                grp->worldGeometry);
        }
		fireResourceGroupPrepareEnded(name);

		// reset current group
		mCurrentGroup = 0;
		
		LogManager::getSingleton().logMessage("Finished preparing resource group " + name);
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::loadResourceGroup(const String& name, 
		bool loadMainResources, bool loadWorldGeom)
    {
		// Can only bulk-load one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().stream()
			<< "Loading resource group '" << name << "' - Resources: "
			<< loadMainResources << " World Geometry: " << loadWorldGeom;
		// load all created resources
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::loadResourceGroup");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex 
		// Set current group
		mCurrentGroup = grp;

		// Count up resources for starting event
		ResourceGroup::LoadResourceOrderMap::iterator oi;
		size_t resourceCount = 0;
		if (loadMainResources)
		{
			for (oi = grp->loadResourceOrderMap.begin(); oi != grp->loadResourceOrderMap.end(); ++oi)
			{
				resourceCount += oi->second->size();
			}
		}
        // Estimate world geometry size
        if (grp->worldGeometrySceneManager && loadWorldGeom)
        {
            resourceCount += 
				grp->worldGeometrySceneManager->estimateWorldGeometry(
					grp->worldGeometry);
        }

		fireResourceGroupLoadStarted(name, resourceCount);

		// Now load for real
		if (loadMainResources)
		{
			for (oi = grp->loadResourceOrderMap.begin(); 
				oi != grp->loadResourceOrderMap.end(); ++oi)
			{
				size_t n = 0;
				LoadUnloadResourceList::iterator l = oi->second->begin();
				while (l != oi->second->end())
				{
					ResourcePtr res = *l;

					// Fire resource events no matter whether resource is already
					// loaded or not. This ensures that the number of callbacks
					// matches the number originally estimated, which is important
					// for progress bars.
					fireResourceLoadStarted(res);

					// If loading one of these resources cascade-loads another resource, 
					// the list will get longer! But these should be loaded immediately
					// Call load regardless, already loaded resources will be skipped
					res->load();

					fireResourceLoadEnded();

					++n;

					// Did the resource change group? if so, our iterator will have
					// been invalidated
					if (res->getGroup() != name)
					{
						l = oi->second->begin();
						std::advance(l, n);
					}
					else
					{
						++l;
					}
				}
			}
		}
        // Load World Geometry
        if (grp->worldGeometrySceneManager && loadWorldGeom)
        {
            grp->worldGeometrySceneManager->setWorldGeometry(
                grp->worldGeometry);
        }
		fireResourceGroupLoadEnded(name);

		// group is loaded
		grp->groupStatus = ResourceGroup::LOADED;

		// reset current group
		mCurrentGroup = 0;
		
		LogManager::getSingleton().logMessage("Finished loading resource group " + name);
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::unloadResourceGroup(const String& name, bool reloadableOnly)
    {
		// Can only bulk-unload one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().logMessage("Unloading resource group " + name);
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::unloadResourceGroup");
		}
		// Set current group
		mCurrentGroup = grp;
		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex 

		// Count up resources for starting event
		ResourceGroup::LoadResourceOrderMap::reverse_iterator oi;
		// unload in reverse order
		for (oi = grp->loadResourceOrderMap.rbegin(); oi != grp->loadResourceOrderMap.rend(); ++oi)
		{
			for (LoadUnloadResourceList::iterator l = oi->second->begin();
				l != oi->second->end(); ++l)
			{
				Resource* resource = l->get();
				if (!reloadableOnly || resource->isReloadable())
				{
					resource->unload();
				}
			}
		}

		grp->groupStatus = ResourceGroup::INITIALISED;

		// reset current group
		mCurrentGroup = 0;
		LogManager::getSingleton().logMessage("Finished unloading resource group " + name);
    }
	//-----------------------------------------------------------------------
	void ResourceGroupManager::unloadUnreferencedResourcesInGroup(
		const String& name, bool reloadableOnly )
	{
		// Can only bulk-unload one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().logMessage(
			"Unloading unused resources in resource group " + name);
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::unloadUnreferencedResourcesInGroup");
		}
		// Set current group
		mCurrentGroup = grp;

		ResourceGroup::LoadResourceOrderMap::reverse_iterator oi;
		// unload in reverse order
		for (oi = grp->loadResourceOrderMap.rbegin(); oi != grp->loadResourceOrderMap.rend(); ++oi)
		{
			for (LoadUnloadResourceList::iterator l = oi->second->begin();
				l != oi->second->end(); ++l)
			{
				// A use count of 3 means that only RGM and RM have references
				// RGM has one (this one) and RM has 2 (by name and by handle)
				if (l->useCount() == RESOURCE_SYSTEM_NUM_REFERENCE_COUNTS)
				{
					Resource* resource = l->get();
					if (!reloadableOnly || resource->isReloadable())
					{
						resource->unload();
					}
				}
			}
		}

		grp->groupStatus = ResourceGroup::INITIALISED;

		// reset current group
		mCurrentGroup = 0;
		LogManager::getSingleton().logMessage(
			"Finished unloading unused resources in resource group " + name);
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::clearResourceGroup(const String& name)
	{
		// Can only bulk-clear one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

			LogManager::getSingleton().logMessage("Clearing resource group " + name);
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::clearResourceGroup");
		}
		// set current group
		mCurrentGroup = grp;
		dropGroupContents(grp);
		// clear initialised flag
		grp->groupStatus = ResourceGroup::UNINITIALSED;
		// reset current group
		mCurrentGroup = 0;
		LogManager::getSingleton().logMessage("Finished clearing resource group " + name);
	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::destroyResourceGroup(const String& name)
    {
		// Can only bulk-destroy one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().logMessage("Destroying resource group " + name);
		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::destroyResourceGroup");
		}
		// set current group
		mCurrentGroup = grp;
        unloadResourceGroup(name, false); // will throw an exception if name not valid
		dropGroupContents(grp);
		deleteGroup(grp);
        mResourceGroupMap.erase(mResourceGroupMap.find(name));
		// reset current group
		mCurrentGroup = 0;
    }
	//-----------------------------------------------------------------------
	bool ResourceGroupManager::isResourceGroupInitialised(const String& name)
    {
		// Can only bulk-destroy one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::isResourceGroupInitialised");
		}
		return (grp->groupStatus != ResourceGroup::UNINITIALSED &&
			grp->groupStatus != ResourceGroup::INITIALISING);
    }
	//-----------------------------------------------------------------------
	bool ResourceGroupManager::isResourceGroupLoaded(const String& name)
    {
		// Can only bulk-destroy one group at a time (reasonable limitation I think)
		OGRE_LOCK_AUTO_MUTEX

		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::isResourceGroupInitialised");
		}
		return (grp->groupStatus == ResourceGroup::LOADED);
    }
	//-----------------------------------------------------------------------
	bool ResourceGroupManager::resourceGroupExists(const String& name)
	{
		return getResourceGroup(name) ? true : false;
	}
    //-----------------------------------------------------------------------
    bool ResourceGroupManager::resourceLocationExists(const String& name, 
        const String& resGroup)
    {
		ResourceGroup* grp = getResourceGroup(resGroup);
		if (!grp)
			return false;

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		LocationList::iterator li, liend;
		liend = grp->locationList.end();
		for (li = grp->locationList.begin(); li != liend; ++li)
		{
			Archive* pArch = (*li)->archive;
			if (pArch->getName() == name)
				// Delete indexes
				return true;
		}
		return false;
	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::addResourceLocation(const String& name, 
        const String& locType, const String& resGroup, bool recursive)
    {
        ResourceGroup* grp = getResourceGroup(resGroup);
        if (!grp)
        {
            createResourceGroup(resGroup);
            grp = getResourceGroup(resGroup);
        }

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        // Get archive
        Archive* pArch = ArchiveManager::getSingleton().load( name, locType );
        // Add to location list
		ResourceLocation* loc = OGRE_NEW_T(ResourceLocation, MEMCATEGORY_RESOURCE);
		loc->archive = pArch;
		loc->recursive = recursive;
        grp->locationList.push_back(loc);
        // Index resources
        StringVectorPtr vec = pArch->find("*", recursive);
        for( StringVector::iterator it = vec->begin(); it != vec->end(); ++it )
			grp->addToIndex(*it, pArch);
		
		StringUtil::StrStreamType msg;
		msg << "Added resource location '" << name << "' of type '" << locType
			<< "' to resource group '" << resGroup << "'";
		if (recursive)
			msg << " with recursive option";
		LogManager::getSingleton().logMessage(msg.str());

    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::removeResourceLocation(const String& name, 
        const String& resGroup)
    {
		ResourceGroup* grp = getResourceGroup(resGroup);
		if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + resGroup + "'", 
                "ResourceGroupManager::removeResourceLocation");
        }

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        // Remove from location list
		LocationList::iterator li, liend;
		liend = grp->locationList.end();
		for (li = grp->locationList.begin(); li != liend; ++li)
		{
			Archive* pArch = (*li)->archive;
			if (pArch->getName() == name)
			{
				grp->removeFromIndex(pArch);
				// Erase list entry
				OGRE_DELETE_T(*li, ResourceLocation, MEMCATEGORY_RESOURCE);
				grp->locationList.erase(li);

				break;
			}

		}

		LogManager::getSingleton().logMessage("Removed resource location " + name);


    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::declareResource(const String& name, 
        const String& resourceType, const String& groupName,
		const NameValuePairList& loadParameters)
    {
        declareResource(name, resourceType, groupName, 0, loadParameters);
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::declareResource(const String& name, 
        const String& resourceType, const String& groupName,
        ManualResourceLoader* loader,
        const NameValuePairList& loadParameters)
    {
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + groupName, 
				"ResourceGroupManager::declareResource");
		}
		
		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		ResourceDeclaration dcl;
		dcl.loader = loader;
		dcl.parameters = loadParameters;
		dcl.resourceName = name;
		dcl.resourceType = resourceType;
		grp->resourceDeclarations.push_back(dcl);
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::undeclareResource(const String& name, 
		const String& groupName)
    {
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + groupName, 
				"ResourceGroupManager::undeclareResource");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		for (ResourceDeclarationList::iterator i = grp->resourceDeclarations.begin();
			i != grp->resourceDeclarations.end(); ++i)
		{
			if (i->resourceName == name)
			{
				grp->resourceDeclarations.erase(i);
				break;
			}
		}
    }
    //-----------------------------------------------------------------------
    DataStreamPtr ResourceGroupManager::openResource(
        const String& resourceName, const String& groupName, 
		bool searchGroupsIfNotFound, Resource* resourceBeingLoaded)
    {
		OGRE_LOCK_AUTO_MUTEX

		if(mLoadingListener)
		{
			DataStreamPtr stream = mLoadingListener->resourceLoading(resourceName, groupName, resourceBeingLoaded);
			if(!stream.isNull())
				return stream;
		}

		// Try to find in resource index first
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + groupName + 
				"' for resource '" + resourceName + "'" , 
				"ResourceGroupManager::openResource");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		Archive* pArch = 0;
		ResourceLocationIndex::iterator rit = grp->resourceIndexCaseSensitive.find(resourceName);
		if (rit != grp->resourceIndexCaseSensitive.end())
		{
			// Found in the index
			pArch = rit->second;
			DataStreamPtr stream = pArch->open(resourceName);
			if (mLoadingListener)
				mLoadingListener->resourceStreamOpened(resourceName, groupName, resourceBeingLoaded, stream);
			return stream;
		}
        else 
        {
            // try case insensitive
            String lcResourceName = resourceName;
            StringUtil::toLowerCase(lcResourceName);
            rit = grp->resourceIndexCaseInsensitive.find(lcResourceName);
            if (rit != grp->resourceIndexCaseInsensitive.end())
            {
                // Found in the index
                pArch = rit->second;
				DataStreamPtr stream = pArch->open(resourceName);
				if (mLoadingListener)
					mLoadingListener->resourceStreamOpened(resourceName, groupName, resourceBeingLoaded, stream);
				return stream;
            }
		    else
		    {
			    // Search the hard way
			    LocationList::iterator li, liend;
			    liend = grp->locationList.end();
			    for (li = grp->locationList.begin(); li != liend; ++li)
			    {
				    Archive* arch = (*li)->archive;
                    if (arch->exists(resourceName))
				    {
                        DataStreamPtr ptr = arch->open(resourceName);
						if (mLoadingListener)
							mLoadingListener->resourceStreamOpened(resourceName, groupName, resourceBeingLoaded, ptr);
					    return ptr;
				    }
			    }
		    }
        }

		
		// Not found
		if (searchGroupsIfNotFound)
		{
			ResourceGroup* foundGrp = findGroupContainingResourceImpl(resourceName); 
			if (foundGrp)
			{
				if (resourceBeingLoaded)
				{
					resourceBeingLoaded->changeGroupOwnership(foundGrp->name);
				}
				return openResource(resourceName, foundGrp->name, false);
			}
			else
			{
				OGRE_EXCEPT(Exception::ERR_FILE_NOT_FOUND, 
					"Cannot locate resource " + resourceName + 
					" in resource group " + groupName + " or any other group.", 
					"ResourceGroupManager::openResource");
			}
		}
		OGRE_EXCEPT(Exception::ERR_FILE_NOT_FOUND, "Cannot locate resource " + 
			resourceName + " in resource group " + groupName + ".", 
			"ResourceGroupManager::openResource");

    }
    //-----------------------------------------------------------------------
    DataStreamListPtr ResourceGroupManager::openResources(
        const String& pattern, const String& groupName)
    {
		OGRE_LOCK_AUTO_MUTEX
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + groupName + "'", 
				"ResourceGroupManager::openResources");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		// Iterate through all the archives and build up a combined list of
		// streams
		// MEMCATEGORY_GENERAL is the only category supported for SharedPtr
		DataStreamListPtr ret = DataStreamListPtr(OGRE_NEW_T(DataStreamList, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

		LocationList::iterator li, liend;
		liend = grp->locationList.end();
		for (li = grp->locationList.begin(); li != liend; ++li)
		{
			Archive* arch = (*li)->archive;
			// Find all the names based on whether this archive is recursive
			StringVectorPtr names = arch->find(pattern, (*li)->recursive);

			// Iterate over the names and load a stream for each
			for (StringVector::iterator ni = names->begin(); ni != names->end(); ++ni)
			{
				DataStreamPtr ptr = arch->open(*ni);
				if (!ptr.isNull())
				{
					ret->push_back(ptr);
				}
			}
		}
		return ret;
		
    }
	//---------------------------------------------------------------------
	DataStreamPtr ResourceGroupManager::createResource(const String& filename, 
		const String& groupName, bool overwrite, const String& locationPattern)
	{
		OGRE_LOCK_AUTO_MUTEX
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + groupName + "'", 
				"ResourceGroupManager::createResource");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		
		for (LocationList::iterator li = grp->locationList.begin(); 
			li != grp->locationList.end(); ++li)
		{
			Archive* arch = (*li)->archive;

			if (!arch->isReadOnly() && 
				(locationPattern.empty() || StringUtil::match(arch->getName(), locationPattern, false)))
			{
				if (!overwrite && arch->exists(filename))
					OGRE_EXCEPT(Exception::ERR_DUPLICATE_ITEM, 
						"Cannot overwrite existing file " + filename, 
						"ResourceGroupManager::createResource");
				
				// create it
				DataStreamPtr ret = arch->create(filename);
				grp->addToIndex(filename, arch);


				return ret;
			}
		}

		OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
			"Cannot find a writable location in group " + groupName, 
			"ResourceGroupManager::createResource");

	}
	//---------------------------------------------------------------------
	void ResourceGroupManager::deleteResource(const String& filename, const String& groupName, 
		const String& locationPattern)
	{
		OGRE_LOCK_AUTO_MUTEX
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + groupName + "'", 
				"ResourceGroupManager::createResource");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		
		for (LocationList::iterator li = grp->locationList.begin(); 
			li != grp->locationList.end(); ++li)
		{
			Archive* arch = (*li)->archive;

			if (!arch->isReadOnly() && 
				(locationPattern.empty() || StringUtil::match(arch->getName(), locationPattern, false)))
			{
				if (arch->exists(filename))
				{
					arch->remove(filename);
					grp->removeFromIndex(filename, arch);

					// only remove one file
					break;
				}
			}
		}

	}
	//---------------------------------------------------------------------
	void ResourceGroupManager::deleteMatchingResources(const String& filePattern, 
		const String& groupName, const String& locationPattern)
	{
		OGRE_LOCK_AUTO_MUTEX
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + groupName + "'", 
				"ResourceGroupManager::createResource");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		
		for (LocationList::iterator li = grp->locationList.begin(); 
			li != grp->locationList.end(); ++li)
		{
			Archive* arch = (*li)->archive;

			if (!arch->isReadOnly() && 
				(locationPattern.empty() || StringUtil::match(arch->getName(), locationPattern, false)))
			{
				StringVectorPtr matchingFiles = arch->find(filePattern);
				for (StringVector::iterator f = matchingFiles->begin(); f != matchingFiles->end(); ++f)
				{
					arch->remove(*f);
					grp->removeFromIndex(*f, arch);

				}
			}
		}


	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::addResourceGroupListener(ResourceGroupListener* l)
    {
		OGRE_LOCK_AUTO_MUTEX

		mResourceGroupListenerList.push_back(l);
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::removeResourceGroupListener(ResourceGroupListener* l)
    {
		OGRE_LOCK_AUTO_MUTEX

		for (ResourceGroupListenerList::iterator i = mResourceGroupListenerList.begin();
			i != mResourceGroupListenerList.end(); ++i)
		{
			if (*i == l)
			{
				mResourceGroupListenerList.erase(i);
				break;
			}
		}
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::_registerResourceManager(
        const String& resourceType, ResourceManager* rm)
    {
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().logMessage(
			"Registering ResourceManager for type " + resourceType);
		mResourceManagerMap[resourceType] = rm;
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::_unregisterResourceManager(
        const String& resourceType)
    {
		OGRE_LOCK_AUTO_MUTEX

		LogManager::getSingleton().logMessage(
			"Unregistering ResourceManager for type " + resourceType);
		
		ResourceManagerMap::iterator i = mResourceManagerMap.find(resourceType);
		if (i != mResourceManagerMap.end())
		{
			mResourceManagerMap.erase(i);
		}
    }
	//-----------------------------------------------------------------------
    void ResourceGroupManager::_registerScriptLoader(ScriptLoader* su)
	{
		OGRE_LOCK_AUTO_MUTEX

		mScriptLoaderOrderMap.insert(
			ScriptLoaderOrderMap::value_type(su->getLoadingOrder(), su));
	}
	//-----------------------------------------------------------------------
    void ResourceGroupManager::_unregisterScriptLoader(ScriptLoader* su)
	{
		OGRE_LOCK_AUTO_MUTEX

		Real order = su->getLoadingOrder();
		ScriptLoaderOrderMap::iterator oi = mScriptLoaderOrderMap.find(order);
		while (oi != mScriptLoaderOrderMap.end() && oi->first == order)
		{
			if (oi->second == su)
			{
				// erase does not invalidate on multimap, except current
				ScriptLoaderOrderMap::iterator del = oi++;
				mScriptLoaderOrderMap.erase(del);
			}
			else
			{
				++oi;
			}
		}
	}
	//-----------------------------------------------------------------------
	ScriptLoader *ResourceGroupManager::_findScriptLoader(const String &pattern)
	{
		OGRE_LOCK_AUTO_MUTEX;

		ScriptLoaderOrderMap::iterator oi;
		for (oi = mScriptLoaderOrderMap.begin();
			oi != mScriptLoaderOrderMap.end(); ++oi)
		{
			ScriptLoader* su = oi->second;
			const StringVector& patterns = su->getScriptPatterns();

			// Search for matches in the patterns
			for (StringVector::const_iterator p = patterns.begin(); p != patterns.end(); ++p)
			{
				if(*p == pattern)
					return su;
			}
		}

		return 0; // No loader was found
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::parseResourceGroupScripts(ResourceGroup* grp)
	{

		LogManager::getSingleton().logMessage(
			"Parsing scripts for resource group " + grp->name);

		// Count up the number of scripts we have to parse
        typedef list<FileInfoListPtr>::type FileListList;
        typedef SharedPtr<FileListList> FileListListPtr;
        typedef std::pair<ScriptLoader*, FileListListPtr> LoaderFileListPair;
        typedef list<LoaderFileListPair>::type ScriptLoaderFileList;
        ScriptLoaderFileList scriptLoaderFileList;
		size_t scriptCount = 0;
		// Iterate over script users in loading order and get streams
		ScriptLoaderOrderMap::iterator oi;
		for (oi = mScriptLoaderOrderMap.begin();
			oi != mScriptLoaderOrderMap.end(); ++oi)
		{
			ScriptLoader* su = oi->second;
			// MEMCATEGORY_GENERAL is the only category supported for SharedPtr
            FileListListPtr fileListList(OGRE_NEW_T(FileListList, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

			// Get all the patterns and search them
			const StringVector& patterns = su->getScriptPatterns();
			for (StringVector::const_iterator p = patterns.begin(); p != patterns.end(); ++p)
			{
				FileInfoListPtr fileList = findResourceFileInfo(grp->name, *p);
				scriptCount += fileList->size();
				fileListList->push_back(fileList);
			}
            scriptLoaderFileList.push_back(
                LoaderFileListPair(su, fileListList));
		}
		// Fire scripting event
		fireResourceGroupScriptingStarted(grp->name, scriptCount);

		// Iterate over scripts and parse
		// Note we respect original ordering
        for (ScriptLoaderFileList::iterator slfli = scriptLoaderFileList.begin();
            slfli != scriptLoaderFileList.end(); ++slfli)
        {
			ScriptLoader* su = slfli->first;
            // Iterate over each list
            for (FileListList::iterator flli = slfli->second->begin(); flli != slfli->second->end(); ++flli)
            {
			    // Iterate over each item in the list
			    for (FileInfoList::iterator fii = (*flli)->begin(); fii != (*flli)->end(); ++fii)
			    {
					bool skipScript = false;
                    fireScriptStarted(fii->filename, skipScript);
					if(skipScript)
					{
						LogManager::getSingleton().logMessage(
							"Skipping script " + fii->filename);
					}
					else
					{
						LogManager::getSingleton().logMessage(
							"Parsing script " + fii->filename);
                        DataStreamPtr stream = fii->archive->open(fii->filename);
                        if (!stream.isNull())
                        {
							if (mLoadingListener)
								mLoadingListener->resourceStreamOpened(fii->filename, grp->name, 0, stream);
                            su->parseScript(stream, grp->name);
                        }
                    }
					fireScriptEnded(fii->filename, skipScript);
			    }
            }
		}

		fireResourceGroupScriptingEnded(grp->name);
		LogManager::getSingleton().logMessage(
			"Finished parsing scripts for resource group " + grp->name);
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::createDeclaredResources(ResourceGroup* grp)
	{

		for (ResourceDeclarationList::iterator i = grp->resourceDeclarations.begin();
			i != grp->resourceDeclarations.end(); ++i)
		{
			ResourceDeclaration& dcl = *i;
			// Retrieve the appropriate manager
			ResourceManager* mgr = _getResourceManager(dcl.resourceType);
			// Create the resource
			ResourcePtr res = mgr->create(dcl.resourceName, grp->name,
                dcl.loader != 0, dcl.loader, &dcl.parameters);
			// Add resource to load list
			ResourceGroup::LoadResourceOrderMap::iterator li = 
				grp->loadResourceOrderMap.find(mgr->getLoadingOrder());
			LoadUnloadResourceList* loadList;
			if (li == grp->loadResourceOrderMap.end())
			{
				loadList = OGRE_NEW_T(LoadUnloadResourceList, MEMCATEGORY_RESOURCE)();
				grp->loadResourceOrderMap[mgr->getLoadingOrder()] = loadList;
			}
			else
			{
				loadList = li->second;
			}
			loadList->push_back(res);

		}

	}
    //-----------------------------------------------------------------------
	void ResourceGroupManager::_notifyResourceCreated(ResourcePtr& res)
	{
		if (mCurrentGroup && res->getGroup() == mCurrentGroup->name)
		{
			// Use current group (batch loading)
			addCreatedResource(res, *mCurrentGroup);
		}
		else
		{
			// Find group
			ResourceGroup* grp = getResourceGroup(res->getGroup());
			if (grp)
			{
				addCreatedResource(res, *grp);
			}
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::_notifyResourceRemoved(ResourcePtr& res)
	{
		if (mCurrentGroup)
		{
			// Do nothing - we're batch unloading so list will be cleared
		}
		else
		{
			// Find group
			ResourceGroup* grp = getResourceGroup(res->getGroup());
			if (grp)
			{
				OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex
				ResourceGroup::LoadResourceOrderMap::iterator i = 
					grp->loadResourceOrderMap.find(
						res->getCreator()->getLoadingOrder());
				if (i != grp->loadResourceOrderMap.end())
				{
					// Iterate over the resource list and remove
					LoadUnloadResourceList* resList = i->second;
					for (LoadUnloadResourceList::iterator l = resList->begin();
						l != resList->end(); ++ l)
					{
						if ((*l).getPointer() == res.getPointer())
						{
							// this is the one
							resList->erase(l);
							break;
						}
					}
				}
			}
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::_notifyResourceGroupChanged(const String& oldGroup, 
		Resource* res)
	{
		ResourcePtr resPtr;
	
		// find old entry
		ResourceGroup* grp = getResourceGroup(oldGroup);

		if (grp)
		{
			OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

			Real order = res->getCreator()->getLoadingOrder();
			ResourceGroup::LoadResourceOrderMap::iterator i = 
				grp->loadResourceOrderMap.find(order);
			assert(i != grp->loadResourceOrderMap.end());
			LoadUnloadResourceList* loadList = i->second;
			for (LoadUnloadResourceList::iterator l = loadList->begin(); 
				l != loadList->end(); ++l)
			{
				if ((*l).getPointer() == res)
				{
					resPtr = *l;
					loadList->erase(l);
					break;
				}
			}
		}

		if (!resPtr.isNull())
		{
			// New group
			ResourceGroup* newGrp = getResourceGroup(res->getGroup());

			addCreatedResource(resPtr, *newGrp);
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::_notifyAllResourcesRemoved(ResourceManager* manager)
	{
		OGRE_LOCK_AUTO_MUTEX

		// Iterate over all groups
		for (ResourceGroupMap::iterator grpi = mResourceGroupMap.begin();
			grpi != mResourceGroupMap.end(); ++grpi)
		{
			OGRE_LOCK_MUTEX(grpi->second->OGRE_AUTO_MUTEX_NAME)
			// Iterate over all priorities
			for (ResourceGroup::LoadResourceOrderMap::iterator oi = grpi->second->loadResourceOrderMap.begin();
				oi != grpi->second->loadResourceOrderMap.end(); ++oi)
			{
				// Iterate over all resources
				for (LoadUnloadResourceList::iterator l = oi->second->begin();
					l != oi->second->end(); )
				{
					if ((*l)->getCreator() == manager)
					{
						// Increment first since iterator will be invalidated
						LoadUnloadResourceList::iterator del = l++;
						oi->second->erase(del);
					}
					else
					{
						++l;
					}
				}
			}

		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::addCreatedResource(ResourcePtr& res, ResourceGroup& grp)
	{
		OGRE_LOCK_MUTEX(grp.OGRE_AUTO_MUTEX_NAME)
		Real order = res->getCreator()->getLoadingOrder();

		ResourceGroup::LoadResourceOrderMap::iterator i = grp.loadResourceOrderMap.find(order);
		LoadUnloadResourceList* loadList;
		if (i == grp.loadResourceOrderMap.end())
		{
			loadList = OGRE_NEW_T(LoadUnloadResourceList, MEMCATEGORY_RESOURCE)();
			grp.loadResourceOrderMap[order] = loadList;
		}
		else
		{
			loadList = i->second;
		}
		loadList->push_back(res);
	}
	//-----------------------------------------------------------------------
	ResourceGroupManager::ResourceGroup* ResourceGroupManager::getResourceGroup(const String& name)
	{
		OGRE_LOCK_AUTO_MUTEX

		ResourceGroupMap::iterator i = mResourceGroupMap.find(name);
		if (i != mResourceGroupMap.end())
		{
			return i->second;
		}
		return 0;

	}
    //-----------------------------------------------------------------------
    ResourceManager* ResourceGroupManager::_getResourceManager(const String& resourceType) 
    {
		OGRE_LOCK_AUTO_MUTEX

        ResourceManagerMap::iterator i = mResourceManagerMap.find(resourceType);
        if (i == mResourceManagerMap.end())
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate resource manager for resource type '" +
                resourceType + "'", "ResourceGroupManager::_getResourceManager");
        }
        return i->second;

    }
	//-----------------------------------------------------------------------
	void ResourceGroupManager::dropGroupContents(ResourceGroup* grp)
	{
		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME)

		bool groupSet = false;
		if (!mCurrentGroup)
		{
			// Set current group to indicate ignoring of notifications
			mCurrentGroup = grp;
			groupSet = true;
		}
		// delete all the load list entries
		ResourceGroup::LoadResourceOrderMap::iterator j, jend;
		jend = grp->loadResourceOrderMap.end();
		for (j = grp->loadResourceOrderMap.begin(); j != jend; ++j)
		{
			// Iterate over resources
			for (LoadUnloadResourceList::iterator k = j->second->begin();
				k != j->second->end(); ++k)
			{
				(*k)->getCreator()->remove((*k)->getHandle());
			}
			OGRE_DELETE_T(j->second, LoadUnloadResourceList, MEMCATEGORY_RESOURCE);
		}
        grp->loadResourceOrderMap.clear();

		if (groupSet)
		{
			mCurrentGroup = 0;
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::deleteGroup(ResourceGroup* grp)
	{
        {
		    OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME)
		    // delete all the load list entries
		    ResourceGroup::LoadResourceOrderMap::iterator j, jend;
		    jend = grp->loadResourceOrderMap.end();
		    for (j = grp->loadResourceOrderMap.begin(); j != jend; ++j)
		    {
			    // Don't iterate over resources to drop with ResourceManager
			    // Assume this is being done anyway since this is a shutdown method
			    OGRE_DELETE_T(j->second, LoadUnloadResourceList, MEMCATEGORY_RESOURCE);
		    }
		    // Drop location list
		    for (LocationList::iterator ll = grp->locationList.begin();
			    ll != grp->locationList.end(); ++ll)
		    {
			    OGRE_DELETE_T(*ll, ResourceLocation, MEMCATEGORY_RESOURCE);
		    }
        }

		// delete ResourceGroup
		OGRE_DELETE_T(grp, ResourceGroup, MEMCATEGORY_RESOURCE);
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceGroupScriptingStarted(const String& groupName, size_t scriptCount)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceGroupScriptingStarted(groupName, scriptCount);
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireScriptStarted(const String& scriptName, bool &skipScript)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			bool temp = false;
			(*l)->scriptParseStarted(scriptName, temp);
			if(temp)
				skipScript = true;
		}
	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::fireScriptEnded(const String& scriptName, bool skipped)
    {
        OGRE_LOCK_AUTO_MUTEX
            for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
                l != mResourceGroupListenerList.end(); ++l)
            {
                (*l)->scriptParseEnded(scriptName, skipped);
            }
    }
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceGroupScriptingEnded(const String& groupName)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceGroupScriptingEnded(groupName);
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceGroupLoadStarted(const String& groupName, size_t resourceCount)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceGroupLoadStarted(groupName, resourceCount);
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceLoadStarted(const ResourcePtr& resource)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceLoadStarted(resource);
		}
	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::fireResourceLoadEnded(void)
    {
        OGRE_LOCK_AUTO_MUTEX
            for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
                l != mResourceGroupListenerList.end(); ++l)
            {
                (*l)->resourceLoadEnded();
            }
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::_notifyWorldGeometryStageStarted(const String& desc)
    {
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->worldGeometryStageStarted(desc);
		}
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::_notifyWorldGeometryStageEnded(void)
    {
        OGRE_LOCK_AUTO_MUTEX
            for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
                l != mResourceGroupListenerList.end(); ++l)
            {
                (*l)->worldGeometryStageEnded();
            }
    }
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceGroupLoadEnded(const String& groupName)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceGroupLoadEnded(groupName);
		}
	}
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceGroupPrepareStarted(const String& groupName, size_t resourceCount)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceGroupPrepareStarted(groupName, resourceCount);
		}
	}
    //-----------------------------------------------------------------------
    void ResourceGroupManager::fireResourcePrepareStarted(const ResourcePtr& resource)
    {
        OGRE_LOCK_AUTO_MUTEX
        for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
            l != mResourceGroupListenerList.end(); ++l)
        {
            (*l)->resourcePrepareStarted(resource);
        }
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::fireResourcePrepareEnded(void)
    {
        OGRE_LOCK_AUTO_MUTEX
            for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
                l != mResourceGroupListenerList.end(); ++l)
            {
                (*l)->resourcePrepareEnded();
            }
    }
	//-----------------------------------------------------------------------
	void ResourceGroupManager::fireResourceGroupPrepareEnded(const String& groupName)
	{
		OGRE_LOCK_AUTO_MUTEX
		for (ResourceGroupListenerList::iterator l = mResourceGroupListenerList.begin();
			l != mResourceGroupListenerList.end(); ++l)
		{
			(*l)->resourceGroupPrepareEnded(groupName);
		}
	}
	//-----------------------------------------------------------------------
    void ResourceGroupManager::shutdownAll(void)
    {
        OGRE_LOCK_AUTO_MUTEX

        ResourceManagerMap::iterator i, iend;
        iend = mResourceManagerMap.end();
        for (i = mResourceManagerMap.begin(); i != iend; ++i)
        {
            i->second->removeAll();
        }
    }
    //-----------------------------------------------------------------------
    StringVectorPtr ResourceGroupManager::listResourceNames(const String& groupName, bool dirs)
    {
        OGRE_LOCK_AUTO_MUTEX
		// MEMCATEGORY_GENERAL is the only category supported for SharedPtr
        StringVectorPtr vec(OGRE_NEW_T(StringVector, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

        // Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::listResourceNames");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        // Iterate over the archives
        LocationList::iterator i, iend;
        iend = grp->locationList.end();
        for (i = grp->locationList.begin(); i != iend; ++i)
        {
            StringVectorPtr lst = (*i)->archive->list((*i)->recursive, dirs);
            vec->insert(vec->end(), lst->begin(), lst->end());
        }

        return vec;


    }
    //-----------------------------------------------------------------------
    FileInfoListPtr ResourceGroupManager::listResourceFileInfo(const String& groupName, bool dirs)
    {
        OGRE_LOCK_AUTO_MUTEX
		// MEMCATEGORY_GENERAL is the only category supported for SharedPtr
        FileInfoListPtr vec(OGRE_NEW_T(FileInfoList, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

        // Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::listResourceFileInfo");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        // Iterate over the archives
        LocationList::iterator i, iend;
        iend = grp->locationList.end();
        for (i = grp->locationList.begin(); i != iend; ++i)
        {
            FileInfoListPtr lst = (*i)->archive->listFileInfo((*i)->recursive, dirs);
            vec->insert(vec->end(), lst->begin(), lst->end());
        }

        return vec;

    }
    //-----------------------------------------------------------------------
    StringVectorPtr ResourceGroupManager::findResourceNames(const String& groupName, 
        const String& pattern, bool dirs)
    {
        OGRE_LOCK_AUTO_MUTEX
		// MEMCATEGORY_GENERAL is the only category supported for SharedPtr
		StringVectorPtr vec(OGRE_NEW_T(StringVector, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

        // Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::findResourceNames");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

            // Iterate over the archives
            LocationList::iterator i, iend;
        iend = grp->locationList.end();
        for (i = grp->locationList.begin(); i != iend; ++i)
        {
            StringVectorPtr lst = (*i)->archive->find(pattern, (*i)->recursive, dirs);
            vec->insert(vec->end(), lst->begin(), lst->end());
        }

        return vec;
    }
    //-----------------------------------------------------------------------
    FileInfoListPtr ResourceGroupManager::findResourceFileInfo(const String& groupName, 
        const String& pattern, bool dirs)
    {
        OGRE_LOCK_AUTO_MUTEX
		// MEMCATEGORY_GENERAL is the only category supported for SharedPtr
        FileInfoListPtr vec(OGRE_NEW_T(FileInfoList, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

        // Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::findResourceFileInfo");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

            // Iterate over the archives
            LocationList::iterator i, iend;
        iend = grp->locationList.end();
        for (i = grp->locationList.begin(); i != iend; ++i)
        {
            FileInfoListPtr lst = (*i)->archive->findFileInfo(pattern, (*i)->recursive, dirs);
            vec->insert(vec->end(), lst->begin(), lst->end());
        }

        return vec;
    }
    //-----------------------------------------------------------------------
	bool ResourceGroupManager::resourceExists(const String& groupName, const String& resourceName)
	{
        OGRE_LOCK_AUTO_MUTEX

		// Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::resourceExists");
        }

		return resourceExists(grp, resourceName);
	}
    //-----------------------------------------------------------------------
	bool ResourceGroupManager::resourceExists(ResourceGroup* grp, const String& resourceName)
	{

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		// Try indexes first
		ResourceLocationIndex::iterator rit = grp->resourceIndexCaseSensitive.find(resourceName);
		if (rit != grp->resourceIndexCaseSensitive.end())
		{
			// Found in the index
			return true;
		}
        else 
        {
            // try case insensitive
            String lcResourceName = resourceName;
            StringUtil::toLowerCase(lcResourceName);
            rit = grp->resourceIndexCaseInsensitive.find(lcResourceName);
            if (rit != grp->resourceIndexCaseInsensitive.end())
            {
                // Found in the index
                return true;
            }
		    else
		    {
			    // Search the hard way
			    LocationList::iterator li, liend;
			    liend = grp->locationList.end();
			    for (li = grp->locationList.begin(); li != liend; ++li)
			    {
				    Archive* arch = (*li)->archive;
                    if (arch->exists(resourceName))
				    {
						return true;
				    }
			    }
		    }
        }

		return false;

	}
	//-----------------------------------------------------------------------
	time_t ResourceGroupManager::resourceModifiedTime(const String& groupName, const String& resourceName)
	{
		OGRE_LOCK_AUTO_MUTEX

		// Try to find in resource index first
		ResourceGroup* grp = getResourceGroup(groupName);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + groupName + "'", 
				"ResourceGroupManager::resourceModifiedTime");
		}

		return resourceModifiedTime(grp, resourceName);

	}
	//-----------------------------------------------------------------------
	time_t ResourceGroupManager::resourceModifiedTime(ResourceGroup* grp, const String& resourceName)
	{
		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

		// Try indexes first
		ResourceLocationIndex::iterator rit = grp->resourceIndexCaseSensitive.find(resourceName);
		if (rit != grp->resourceIndexCaseSensitive.end())
		{
			return rit->second->getModifiedTime(resourceName);
		}
        else 
        {
            // try case insensitive
            String lcResourceName = resourceName;
            StringUtil::toLowerCase(lcResourceName);
            rit = grp->resourceIndexCaseInsensitive.find(lcResourceName);
            if (rit != grp->resourceIndexCaseInsensitive.end())
            {
				return rit->second->getModifiedTime(resourceName);
            }
		    else
		    {
			    // Search the hard way
			    LocationList::iterator li, liend;
			    liend = grp->locationList.end();
			    for (li = grp->locationList.begin(); li != liend; ++li)
			    {
				    Archive* arch = (*li)->archive;
					time_t testTime = arch->getModifiedTime(resourceName);

                    if (testTime > 0)
				    {
						return testTime;
				    }
			    }
		    }
        }

		return 0;
	}
	//-----------------------------------------------------------------------
	ResourceGroupManager::ResourceGroup* 
	ResourceGroupManager::findGroupContainingResourceImpl(const String& filename)
	{
        OGRE_LOCK_AUTO_MUTEX

			// Iterate over resource groups and find
		for (ResourceGroupMap::iterator i = mResourceGroupMap.begin();
			i != mResourceGroupMap.end(); ++i)
		{
	        ResourceGroup* grp = i->second;

			OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex
				
			if (resourceExists(grp, filename))
				return grp;
		}
		// Not found
		return 0;
	}
    //-----------------------------------------------------------------------
	bool ResourceGroupManager::resourceExistsInAnyGroup(const String& filename)
	{
		ResourceGroup* grp = findGroupContainingResourceImpl(filename);
		if (!grp)
			return false;
		return true;
	}
	//-----------------------------------------------------------------------
	const String& ResourceGroupManager::findGroupContainingResource(const String& filename)
	{
		ResourceGroup* grp = findGroupContainingResourceImpl(filename);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND,
				"Unable to derive resource group for " + 
				filename + " automatically since the resource was not "
				"found.", 
				"ResourceGroupManager::findGroupContainingResource");
		}
		return grp->name;
	}
    //-----------------------------------------------------------------------
    StringVectorPtr ResourceGroupManager::listResourceLocations(const String& groupName)
    {
        OGRE_LOCK_AUTO_MUTEX
        StringVectorPtr vec(OGRE_NEW_T(StringVector, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

        // Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::listResourceNames");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        // Iterate over the archives
        LocationList::iterator i, iend;
        iend = grp->locationList.end();
        for (i = grp->locationList.begin(); i != iend; ++i)
        {
            vec->push_back((*i)->archive->getName());
        }

        return vec;
    }
    //-----------------------------------------------------------------------
    StringVectorPtr ResourceGroupManager::findResourceLocation(const String& groupName, const String& pattern)
    {
        OGRE_LOCK_AUTO_MUTEX
        StringVectorPtr vec(OGRE_NEW_T(StringVector, MEMCATEGORY_GENERAL)(), SPFM_DELETE_T);

        // Try to find in resource index first
        ResourceGroup* grp = getResourceGroup(groupName);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + groupName + "'", 
                "ResourceGroupManager::listResourceNames");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        // Iterate over the archives
        LocationList::iterator i, iend;
        iend = grp->locationList.end();
        for (i = grp->locationList.begin(); i != iend; ++i)
        {
            String location = (*i)->archive->getName();
            // Search for the pattern
            if(StringUtil::match(location, pattern))
            {
                vec->push_back(location);
            }
        }

        return vec;
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::linkWorldGeometryToResourceGroup(const String& group, 
        const String& worldGeometry, SceneManager* sceneManager)
    {
        OGRE_LOCK_AUTO_MUTEX
        ResourceGroup* grp = getResourceGroup(group);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + group + "'", 
                "ResourceGroupManager::linkWorldGeometryToResourceGroup");
        }

        OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex

        grp->worldGeometry = worldGeometry;
        grp->worldGeometrySceneManager = sceneManager;
    }
    //-----------------------------------------------------------------------
    void ResourceGroupManager::unlinkWorldGeometryFromResourceGroup(const String& group)
    {
        OGRE_LOCK_AUTO_MUTEX
        ResourceGroup* grp = getResourceGroup(group);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + group + "'", 
                "ResourceGroupManager::unlinkWorldGeometryFromResourceGroup");
        }

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex
        grp->worldGeometry = StringUtil::BLANK;
        grp->worldGeometrySceneManager = 0;
    }
	//-----------------------------------------------------------------------
	bool ResourceGroupManager::isResourceGroupInGlobalPool(const String& name)
    {
		OGRE_LOCK_AUTO_MUTEX

		ResourceGroup* grp = getResourceGroup(name);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot find a group named " + name, 
				"ResourceGroupManager::isResourceGroupInitialised");
		}
		return grp->inGlobalPool;
    }
    //-----------------------------------------------------------------------
	StringVector ResourceGroupManager::getResourceGroups(void)
	{
        OGRE_LOCK_AUTO_MUTEX
		StringVector vec;
		for (ResourceGroupMap::iterator i = mResourceGroupMap.begin();
			i != mResourceGroupMap.end(); ++i)
		{
			vec.push_back(i->second->name);
		}
		return vec;
	}
    //-----------------------------------------------------------------------
	ResourceGroupManager::ResourceDeclarationList 
	ResourceGroupManager::getResourceDeclarationList(const String& group)
	{
        OGRE_LOCK_AUTO_MUTEX
        ResourceGroup* grp = getResourceGroup(group);
        if (!grp)
        {
            OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
                "Cannot locate a resource group called '" + group + "'", 
                "ResourceGroupManager::getResourceDeclarationList");
        }

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex
		return grp->resourceDeclarations;
	}
	//---------------------------------------------------------------------
	const ResourceGroupManager::LocationList& 
	ResourceGroupManager::getResourceLocationList(const String& group)
	{
		OGRE_LOCK_AUTO_MUTEX
			ResourceGroup* grp = getResourceGroup(group);
		if (!grp)
		{
			OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, 
				"Cannot locate a resource group called '" + group + "'", 
				"ResourceGroupManager::getResourceLocationList");
		}

		OGRE_LOCK_MUTEX(grp->OGRE_AUTO_MUTEX_NAME) // lock group mutex
		return grp->locationList;

	}
	//-------------------------------------------------------------------------
	void ResourceGroupManager::setLoadingListener(ResourceLoadingListener *listener)
	{
		mLoadingListener = listener;
	}
	//-------------------------------------------------------------------------
	ResourceLoadingListener *ResourceGroupManager::getLoadingListener()
	{
		return mLoadingListener;
	}
	//---------------------------------------------------------------------
	//---------------------------------------------------------------------
	void ResourceGroupManager::ResourceGroup::addToIndex(const String& filename, Archive* arch)
	{
		// internal, assumes mutex lock has already been obtained
		this->resourceIndexCaseSensitive[filename] = arch;

		if (!arch->isCaseSensitive())
		{
			String lcase = filename;
			StringUtil::toLowerCase(lcase);
			this->resourceIndexCaseInsensitive[lcase] = arch;
		}
	}
	//---------------------------------------------------------------------
	void ResourceGroupManager::ResourceGroup::removeFromIndex(const String& filename, Archive* arch)
	{
		// internal, assumes mutex lock has already been obtained
		ResourceLocationIndex::iterator i = this->resourceIndexCaseSensitive.find(filename);
		if (i != this->resourceIndexCaseSensitive.end() && i->second == arch)
			this->resourceIndexCaseSensitive.erase(i);

		if (!arch->isCaseSensitive())
		{
			String lcase = filename;
			StringUtil::toLowerCase(lcase);
			i = this->resourceIndexCaseInsensitive.find(filename);
			if (i != this->resourceIndexCaseInsensitive.end() && i->second == arch)
				this->resourceIndexCaseInsensitive.erase(i);
		}
	}
	//---------------------------------------------------------------------
	void ResourceGroupManager::ResourceGroup::removeFromIndex(Archive* arch)
	{
		// Delete indexes
		ResourceLocationIndex::iterator rit, ritend;
		ritend = this->resourceIndexCaseInsensitive.end();
		for (rit = this->resourceIndexCaseInsensitive.begin(); rit != ritend;)
		{
			if (rit->second == arch)
			{
				ResourceLocationIndex::iterator del = rit++;
				this->resourceIndexCaseInsensitive.erase(del);
			}
			else
			{
				++rit;
			}
		}
		ritend = this->resourceIndexCaseSensitive.end();
		for (rit = this->resourceIndexCaseSensitive.begin(); rit != ritend;)
		{
			if (rit->second == arch)
			{
				ResourceLocationIndex::iterator del = rit++;
				this->resourceIndexCaseSensitive.erase(del);
			}
			else
			{
				++rit;
			}
		}

	}
	//---------------------------------------------------------------------
	//-----------------------------------------------------------------------
	ScriptLoader::~ScriptLoader()
	{
	}


}