C++ CExtension::GetAPI方法代码示例

IExtension *CExtensionManager::FindExtensionByName(const char *ext)
{
	List<CExtension *>::iterator iter;
	CExtension *pExt;
	IExtensionInterface *pAPI;
	const char *name;

	for (iter=m_Libs.begin(); iter!=m_Libs.end(); iter++)
	{
		pExt = (*iter);
		if (!pExt->IsLoaded())
		{
			continue;
		}
		if ((pAPI = pExt->GetAPI()) == NULL)
		{
			continue;
		}
		name = pAPI->GetExtensionName();
		if (!name)
		{
			continue;
		}
		if (strcmp(name, ext) == 0)
		{
			return pExt;
		}
	}

	return NULL;
}

void CExtensionManager::BindDependency(IExtension *pRequester, IfaceInfo *pInfo)
{
	CExtension *pExt = (CExtension *)pRequester;
	CExtension *pOwner = (CExtension *)pInfo->owner;

	pExt->AddDependency(pInfo);

	IExtensionInterface *pAPI = pExt->GetAPI();
	if (pAPI && !pAPI->QueryInterfaceDrop(pInfo->iface))
	{
		pOwner->AddChildDependent(pExt, pInfo->iface);
	}
}

void CExtensionManager::OnRootConsoleCommand(const char *cmdname, const CCommand &command)
{
	int argcount = smcore.Argc(command);
	if (argcount >= 3)
	{
		const char *cmd = smcore.Arg(command, 2);
		if (strcmp(cmd, "list") == 0)
		{
			List<CExtension *>::iterator iter;
			CExtension *pExt;
			unsigned int num = 1;
			switch (m_Libs.size())
			{
			case 1:
				{
					rootmenu->ConsolePrint("[SM] Displaying 1 extension:");
					break;
				}
			case 0:
				{
					rootmenu->ConsolePrint("[SM] No extensions are loaded.");
					break;
				}
			default:
				{
					rootmenu->ConsolePrint("[SM] Displaying %d extensions:", m_Libs.size());
					break;
				}
			}
			for (iter=m_Libs.begin(); iter!=m_Libs.end(); iter++,num++)
			{
				pExt = (*iter);
				if (pExt->IsLoaded())
				{
					char error[255];
					if (!pExt->IsRunning(error, sizeof(error)))
					{
						rootmenu->ConsolePrint("[%02d] <FAILED> file \"%s\": %s", num, pExt->GetFilename(), error);
					}
					else
					{
						IExtensionInterface *pAPI = pExt->GetAPI();
						const char *name = pAPI->GetExtensionName();
						const char *version = pAPI->GetExtensionVerString();
						const char *descr = pAPI->GetExtensionDescription();
						rootmenu->ConsolePrint("[%02d] %s (%s): %s", num, name, version, descr);
					}
				} else {
					rootmenu->ConsolePrint("[%02d] <FAILED> file \"%s\": %s", num, pExt->GetFilename(), pExt->m_Error.c_str());
				}
			}
			return;
		}
		else if (strcmp(cmd, "load") == 0)
		{
			if (argcount < 4)
			{
				rootmenu->ConsolePrint("[SM] Usage: sm exts load <file>");
				return;
			}

			const char *filename = smcore.Arg(command, 3);
			char path[PLATFORM_MAX_PATH];
			char error[256];

			smcore.Format(path, sizeof(path), "%s%s%s", filename, !strstr(filename, ".ext") ? ".ext" : "",
				!strstr(filename, "." PLATFORM_LIB_EXT) ? "." PLATFORM_LIB_EXT : "");
			
			if (FindExtensionByFile(path) != NULL)
			{
				rootmenu->ConsolePrint("[SM] Extension %s is already loaded.", path);
				return;
			}
			
			if (LoadExtension(path, error, sizeof(error)))
			{
				rootmenu->ConsolePrint("[SM] Loaded extension %s successfully.", path);
			} else
			{
				rootmenu->ConsolePrint("[SM] Extension %s failed to load: %s", path, error);
			}
			
			return;
		}
		else if (strcmp(cmd, "info") == 0)
		{
			if (argcount < 4)
			{
				rootmenu->ConsolePrint("[SM] Usage: sm exts info <#>");
				return;
			}

			const char *sId = smcore.Arg(command, 3);
			unsigned int id = atoi(sId);
			if (id <= 0)
			{
				rootmenu->ConsolePrint("[SM] Usage: sm exts info <#>");
				return;
			}

//.........这里部分代码省略.........

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++;
				}
			}
		}

//.........这里部分代码省略.........