IExtension *CExtensionManager::LoadExternal(IExtensionInterface *pInterface,
const char *filepath,
const char *filename,
char *error,
size_t maxlength)
{
IExtension *pAlready;
if ((pAlready=FindExtensionByFile(filename)) != NULL)
{
return pAlready;
}
CExtension *pExt = new CRemoteExtension(pInterface, filename, filepath);
if (!pExt->Load(error, maxlength) || !pExt->IsLoaded())
{
pExt->Unload();
delete pExt;
return NULL;
}
m_Libs.push_back(pExt);
return pExt;
}
IExtension *CExtensionManager::LoadExtension(const char *file, char *error, size_t maxlength)
{
/* Remove platform extension if it's there. Compat hack. */
const char *ext = libsys->GetFileExtension(file);
if (strcmp(ext, PLATFORM_LIB_EXT) == 0)
{
char path2[PLATFORM_MAX_PATH];
smcore.Format(path2, sizeof(path2), "%s", file);
path2[strlen(file) - strlen(PLATFORM_LIB_EXT) - 1] = '\0';
return LoadExtension(path2, error, maxlength);
}
IExtension *pAlready;
if ((pAlready=FindExtensionByFile(file)) != NULL)
{
return pAlready;
}
CExtension *pExt = new CLocalExtension(file);
if (!pExt->Load(error, maxlength) || !pExt->IsLoaded())
{
pExt->Unload();
delete pExt;
return NULL;
}
/* :TODO: do QueryRunning check if the map is loaded */
m_Libs.push_back(pExt);
return pExt;
}
IExtension *CExtensionManager::LoadExtension(const char *file, char *error, size_t maxlength)
{
IExtension *pAlready;
if ((pAlready=FindExtensionByFile(file)) != NULL)
{
return pAlready;
}
CExtension *pExt = new CLocalExtension(file);
if (!pExt->Load(error, maxlength) || !pExt->IsLoaded())
{
pExt->Unload();
delete pExt;
return NULL;
}
/* :TODO: do QueryRunning check if the map is loaded */
m_Libs.push_back(pExt);
return pExt;
}
bool CExtensionManager::UnloadExtension(IExtension *_pExt)
{
if (!_pExt)
{
return false;
}
CExtension *pExt = (CExtension *)_pExt;
if (m_Libs.find(pExt) == m_Libs.end())
{
return false;
}
/* Tell it to unload */
if (pExt->IsLoaded())
{
IExtensionInterface *pAPI = pExt->GetAPI();
pAPI->OnExtensionUnload();
}
/* First remove us from internal lists */
g_ShareSys.RemoveInterfaces(_pExt);
m_Libs.remove(pExt);
List<CExtension *> UnloadQueue;
/* Handle dependencies */
if (pExt->IsLoaded())
{
/* Unload any dependent plugins */
List<CPlugin *>::iterator p_iter = pExt->m_Dependents.begin();
while (p_iter != pExt->m_Dependents.end())
{
/* We have to manually unlink ourselves here, since we're no longer being managed */
scripts->UnloadPlugin((*p_iter));
p_iter = pExt->m_Dependents.erase(p_iter);
}
List<String>::iterator s_iter;
for (s_iter = pExt->m_Libraries.begin();
s_iter != pExt->m_Libraries.end();
s_iter++)
{
scripts->OnLibraryAction((*s_iter).c_str(), LibraryAction_Removed);
}
/* Notify and/or unload all dependencies */
List<CExtension *>::iterator c_iter;
CExtension *pDep;
IExtensionInterface *pAPI;
for (c_iter = m_Libs.begin(); c_iter != m_Libs.end(); c_iter++)
{
pDep = (*c_iter);
if ((pAPI=pDep->GetAPI()) == NULL)
{
continue;
}
if (pDep == pExt)
{
continue;
}
/* Now, get its dependency list */
bool dropped = false;
List<IfaceInfo>::iterator i_iter = pDep->m_Deps.begin();
while (i_iter != pDep->m_Deps.end())
{
if ((*i_iter).owner == _pExt)
{
if (!pAPI->QueryInterfaceDrop((*i_iter).iface))
{
if (!dropped)
{
dropped = true;
UnloadQueue.push_back(pDep);
}
}
pAPI->NotifyInterfaceDrop((*i_iter).iface);
i_iter = pDep->m_Deps.erase(i_iter);
}
else
{
i_iter++;
}
}
/* Flush out any back references to this plugin */
i_iter = pDep->m_ChildDeps.begin();
while (i_iter != pDep->m_ChildDeps.end())
{
if ((*i_iter).owner == pExt)
{
i_iter = pDep->m_ChildDeps.erase(i_iter);
}
else
{
i_iter++;
}
}
}
/* Unbind our natives from Core */
pExt->DropEverything();
}
IdentityToken_t *pIdentity;
if ((pIdentity = pExt->GetIdentity()) != NULL)
{
SMGlobalClass *glob = SMGlobalClass::head;
while (glob)
{
glob->OnSourceModIdentityDropped(pIdentity);
glob = glob->m_pGlobalClassNext;
}
}
pExt->Unload();
delete pExt;
List<CExtension *>::iterator iter;
for (iter=UnloadQueue.begin(); iter!=UnloadQueue.end(); iter++)
{
/* NOTE: This is safe because the unload function backs out of anything not present */
UnloadExtension((*iter));
}
return true;
}