C++ VfsPath类代码示例

// Generate list of available effect-sets
std::vector<CStrW> CPostprocManager::GetPostEffects() const
{
	std::vector<CStrW> effects;
	
	const VfsPath path(L"shaders/effects/postproc/");
	
	VfsPaths pathnames;
	if(vfs::GetPathnames(g_VFS, path, 0, pathnames) < 0)
	{
		LOGERROR(L"Error finding Post effects in '%ls'", path.string().c_str());
	}
	
	for(size_t i = 0; i < pathnames.size(); i++)
	{
		if (pathnames[i].Extension() != L".xml")
			continue;
		
		effects.push_back(pathnames[i].Basename().string());
	}
	
	// Add the default "null" effect to the list.
	effects.push_back(L"default");

	sort(effects.begin(), effects.end());

	return effects;
}

void CSoundManager::PlayAsGroup(const VfsPath& groupPath, CVector3D sourcePos, entity_id_t source, bool ownedSound)
{
	// Make sure the sound group is loaded
	CSoundGroup* group;
	if (m_SoundGroups.find(groupPath.string()) == m_SoundGroups.end())
	{
		group = new CSoundGroup();
		if (!group->LoadSoundGroup(L"audio/" + groupPath.string()))
		{
			LOGERROR("Failed to load sound group '%s'", groupPath.string8());
			delete group;
			group = NULL;
		}
		// Cache the sound group (or the null, if it failed)
		m_SoundGroups[groupPath.string()] = group;
	}
	else
	{
		group = m_SoundGroups[groupPath.string()];
	}

	// Failed to load group -> do nothing
	if (group && (ownedSound || !group->TestFlag(eOwnerOnly)))
		group->PlayNext(sourcePos, source);
}

///////////////////////////////////////////////////////////////////////////////////////////////////
// SaveMap: try to save the current map to the given file
void CMapWriter::SaveMap(const VfsPath& pathname, CTerrain* pTerrain,
						 WaterManager* pWaterMan, SkyManager* pSkyMan,
						 CLightEnv* pLightEnv, CCamera* pCamera, CCinemaManager* pCinema,
						 CPostprocManager* pPostproc,
						 CSimulation2* pSimulation2)
{
	CFilePacker packer(FILE_VERSION, "PSMP");

	// build necessary data
	PackMap(packer, pTerrain);

	try
	{
		// write it out
		packer.Write(pathname);
	}
	catch (PSERROR_File_WriteFailed&)
	{
		LOGERROR("Failed to write map '%s'", pathname.string8());
		return;
	}

	VfsPath pathnameXML = pathname.ChangeExtension(L".xml");
	WriteXML(pathnameXML, pWaterMan, pSkyMan, pLightEnv, pCamera, pCinema, pPostproc, pSimulation2);
}

bool ScriptInterface::LoadGlobalScriptFile(const VfsPath& path)
{
	JSAutoRequest rq(m->m_cx);
	JS::RootedObject global(m->m_cx, m->m_glob);
	if (!VfsFileExists(path))
	{
		LOGERROR("File '%s' does not exist", path.string8());
		return false;
	}

	CVFSFile file;

	PSRETURN ret = file.Load(g_VFS, path);

	if (ret != PSRETURN_OK)
	{
		LOGERROR("Failed to load file '%s': %s", path.string8(), GetErrorString(ret));
		return false;
	}

	std::wstring code = wstring_from_utf8(file.DecodeUTF8()); // assume it's UTF-8

	utf16string codeUtf16(code.begin(), code.end());
	uint lineNo = 1;
	// CompileOptions does not copy the contents of the filename string pointer.
	// Passing a temporary string there will cause undefined behaviour, so we create a separate string to avoid the temporary.
	std::string filenameStr = path.string8();

	JS::RootedValue rval(m->m_cx);
	JS::CompileOptions opts(m->m_cx);
	opts.setFileAndLine(filenameStr.c_str(), lineNo);
	return JS::Evaluate(m->m_cx, global, opts,
			reinterpret_cast<const char16_t*>(codeUtf16.c_str()), (uint)(codeUtf16.length()), &rval);
}

/**
 * Initializes the game world with the attributes provided.
 **/
void CWorld::RegisterInit(const CStrW& mapFile, const CScriptValRooted& settings, int playerID)
{
	// Load the map, if one was specified
	if (mapFile.length())
	{
		VfsPath mapfilename = VfsPath(mapFile).ChangeExtension(L".pmp");
		CMapReader* reader = 0;

		try
		{
			reader = new CMapReader;
			CTriggerManager* pTriggerManager = NULL;
			reader->LoadMap(mapfilename, settings, m_Terrain,
				CRenderer::IsInitialised() ? g_Renderer.GetWaterManager() : NULL,
				CRenderer::IsInitialised() ? g_Renderer.GetSkyManager() : NULL,
				&g_LightEnv, m_pGame->GetView(),
				m_pGame->GetView() ? m_pGame->GetView()->GetCinema() : NULL,
				pTriggerManager, CRenderer::IsInitialised() ? &g_Renderer.GetPostprocManager() : NULL,
				m_pGame->GetSimulation2(), &m_pGame->GetSimulation2()->GetSimContext(), playerID, false);
				// fails immediately, or registers for delay loading
		}
		catch (PSERROR_File& err)
		{
			delete reader;
			LOGERROR(L"Failed to load map %ls: %hs", mapfilename.string().c_str(), err.what());
			throw PSERROR_Game_World_MapLoadFailed("Failed to load map.\nCheck application log for details.");
		}
	}
}

bool ScriptInterface::LoadGlobalScriptFile(const VfsPath& path)
{
	JSAutoRequest rq(m->m_cx);
	JS::RootedObject global(m->m_cx, m->m_glob);
	if (!VfsFileExists(path))
	{
		LOGERROR("File '%s' does not exist", path.string8());
		return false;
	}

	CVFSFile file;

	PSRETURN ret = file.Load(g_VFS, path);

	if (ret != PSRETURN_OK)
	{
		LOGERROR("Failed to load file '%s': %s", path.string8(), GetErrorString(ret));
		return false;
	}

	std::wstring code = wstring_from_utf8(file.DecodeUTF8()); // assume it's UTF-8

	utf16string codeUtf16(code.begin(), code.end());
	uint lineNo = 1;

	JS::RootedValue rval(m->m_cx);
	return JS_EvaluateUCScript(m->m_cx, global,
			reinterpret_cast<const jschar*> (codeUtf16.c_str()), (uint)(codeUtf16.length()),
			utf8_from_wstring(path.string()).c_str(), lineNo, &rval);
}

Status CComponentManager::FindJSONFilesCallback(const VfsPath& pathname, const FileInfo& UNUSED(fileInfo), const uintptr_t cbData)
{
	FindJSONFilesCallbackData* data = (FindJSONFilesCallbackData*)cbData;
	
	VfsPath pathstem = pathname.ChangeExtension(L"");
	// Strip the root from the path
	std::wstring name = pathstem.string().substr(data->path.string().length());

	data->templates.push_back(std::string(name.begin(), name.end()));

	return INFO::OK;
}

// <extension> identifies the file format that is to be written
// (case-insensitive). examples: "bmp", "png", "jpg".
// BMP is good for quick output at the expense of large files.
void WriteScreenshot(const VfsPath& extension)
{
    // get next available numbered filename
    // note: %04d -> always 4 digits, so sorting by filename works correctly.
    const VfsPath basenameFormat(L"screenshots/screenshot%04d");
    const VfsPath filenameFormat = basenameFormat.ChangeExtension(extension);
    VfsPath filename;
    vfs::NextNumberedFilename(g_VFS, filenameFormat, s_nextScreenshotNumber, filename);

    const size_t w = (size_t)g_xres, h = (size_t)g_yres;
    const size_t bpp = 24;
    GLenum fmt = GL_RGB;
    int flags = TEX_BOTTOM_UP;
    // we want writing BMP to be as fast as possible,
    // so read data from OpenGL in BMP format to obviate conversion.
    if(extension == L".bmp")
    {
#if !CONFIG2_GLES // GLES doesn't support BGR
        fmt = GL_BGR;
        flags |= TEX_BGR;
#endif
    }

    // Hide log messages and re-render
    RenderLogger(false);
    Render();
    RenderLogger(true);

    const size_t img_size = w * h * bpp/8;
    const size_t hdr_size = tex_hdr_size(filename);
    shared_ptr<u8> buf;
    AllocateAligned(buf, hdr_size+img_size, maxSectorSize);
    GLvoid* img = buf.get() + hdr_size;
    Tex t;
    if(t.wrap(w, h, bpp, flags, buf, hdr_size) < 0)
        return;
    glReadPixels(0, 0, (GLsizei)w, (GLsizei)h, fmt, GL_UNSIGNED_BYTE, img);

    if (tex_write(&t, filename) == INFO::OK)
    {
        OsPath realPath;
        g_VFS->GetRealPath(filename, realPath);

        LOGMESSAGERENDER(g_L10n.Translate("Screenshot written to '%s'"), realPath.string8());

        debug_printf(
            CStr(g_L10n.Translate("Screenshot written to '%s'") + "\n").c_str(),
            realPath.string8().c_str());
    }
    else
        LOGERROR("Error writing screenshot to '%s'", filename.string8());
}

static std::vector<std::string> GetJSONData(const VfsPath& path)
{
	VfsPaths pathnames;
	Status ret = vfs::GetPathnames(g_VFS, path, L"*.json", pathnames);
	if (ret != INFO::OK)
	{
		// Some error reading directory
		wchar_t error[200];
		LOGERROR("Error reading directory '%s': %s", path.string8(), utf8_from_wstring(StatusDescription(ret, error, ARRAY_SIZE(error))));
		return std::vector<std::string>();
	}

	std::vector<std::string> data;
	for (const VfsPath& p : pathnames)
	{
		// Load JSON file
		CVFSFile file;
		PSRETURN ret = file.Load(g_VFS, p);
		if (ret != PSRETURN_OK)
		{
			LOGERROR("GetJSONData: Failed to load file '%s': %s", p.string8(), GetErrorString(ret));
			continue;
		}

		data.push_back(file.DecodeUTF8()); // assume it's UTF-8
	}

	return data;
}

bool ScriptInterface::LoadScript(const VfsPath& filename, const std::string& code)
{

	JSAutoRequest rq(m->m_cx);
	JS::RootedObject global(m->m_cx, m->m_glob);
	utf16string codeUtf16(code.begin(), code.end());
	uint lineNo = 1;
	// CompileOptions does not copy the contents of the filename string pointer.
	// Passing a temporary string there will cause undefined behaviour, so we create a separate string to avoid the temporary.
	std::string filenameStr(utf8_from_wstring(filename.string()));

	JS::CompileOptions options(m->m_cx);
	options.setFileAndLine(filenameStr.c_str(), lineNo);
	options.setCompileAndGo(true);

	JS::RootedFunction func(m->m_cx,
	JS_CompileUCFunction(m->m_cx, global, NULL, 0, NULL,
			reinterpret_cast<const jschar*> (codeUtf16.c_str()), (uint)(codeUtf16.length()), options)
	);
	if (!func)
		return false;

	JS::RootedValue rval(m->m_cx);
	return JS_CallFunction(m->m_cx, JS::NullPtr(), func, JS::HandleValueArray::empty(), &rval);
}

PSRETURN CMapSummaryReader::LoadMap(const VfsPath& pathname)
{
	VfsPath filename_xml = pathname.ChangeExtension(L".xml");

	CXeromyces xmb_file;
	if (xmb_file.Load(g_VFS, filename_xml) != PSRETURN_OK)
		return PSRETURN_File_ReadFailed;

	// Define all the relevant elements used in the XML file
	#define EL(x) int el_##x = xmb_file.GetElementID(#x)
	#define AT(x) int at_##x = xmb_file.GetAttributeID(#x)
	EL(scenario);
	EL(scriptsettings);
	#undef AT
	#undef EL

	XMBElement root = xmb_file.GetRoot();
	ENSURE(root.GetNodeName() == el_scenario);

	XERO_ITER_EL(root, child)
	{
		int child_name = child.GetNodeName();
		if (child_name == el_scriptsettings)
		{
			m_ScriptSettings = child.GetText();
		}
	}

static Status AddToTemplates(const VfsPath& pathname, const CFileInfo& UNUSED(fileInfo), const uintptr_t cbData)
{
	std::vector<std::string>& templates = *(std::vector<std::string>*)cbData;

	// Strip the .xml extension
	VfsPath pathstem = pathname.ChangeExtension(L"");
	// Strip the root from the path
	std::wstring name = pathstem.string().substr(ARRAY_SIZE(TEMPLATE_ROOT)-1);

	// We want to ignore template_*.xml templates, since they should never be built in the editor
	if (name.substr(0, 9) == L"template_")
		return INFO::OK;

	templates.push_back(std::string(name.begin(), name.end()));
	return INFO::OK;
}

	bool Compile(GLuint target, const char* targetName, GLuint program, const VfsPath& file, const CStr& code)
	{
		ogl_WarnIfError();

		pglBindProgramARB(target, program);

		ogl_WarnIfError();

		pglProgramStringARB(target, GL_PROGRAM_FORMAT_ASCII_ARB, (GLsizei)code.length(), code.c_str());

		if (ogl_SquelchError(GL_INVALID_OPERATION))
		{
			GLint errPos = 0;
			glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errPos);
			int errLine = std::count(code.begin(), code.begin() + std::min((int)code.length(), errPos + 1), '\n') + 1;
			char* errStr = (char*)glGetString(GL_PROGRAM_ERROR_STRING_ARB);
			LOGERROR(L"Failed to compile %hs program '%ls' (line %d):\n%hs", targetName, file.string().c_str(), errLine, errStr);
			return false;
		}

		pglBindProgramARB(target, 0);

		ogl_WarnIfError();

		return true;
	}

/**
 * @callgraph
 */
void CGUI::LoadXmlFile(const VfsPath& Filename, boost::unordered_set<VfsPath>& Paths)
{
	Paths.insert(Filename);

	CXeromyces XeroFile;
	if (XeroFile.Load(g_VFS, Filename, "gui") != PSRETURN_OK)
		return;

	XMBElement node = XeroFile.GetRoot();

	CStr root_name(XeroFile.GetElementString(node.GetNodeName()));
	try
	{
		if (root_name == "objects")
		{
			Xeromyces_ReadRootObjects(node, &XeroFile, Paths);

			// Re-cache all values so these gets cached too.
			//UpdateResolution();
		}
		else if (root_name == "sprites")
			Xeromyces_ReadRootSprites(node, &XeroFile);
		else if (root_name == "styles")
			Xeromyces_ReadRootStyles(node, &XeroFile);
		else if (root_name == "setup")
			Xeromyces_ReadRootSetup(node, &XeroFile);
		else
			debug_warn(L"CGUI::LoadXmlFile error");
	}
	catch (PSERROR_GUI& e)
	{
		LOGERROR("Errors loading GUI file %s (%u)", Filename.string8(), e.getCode());
		return;
	}
}

CTerrainPropertiesPtr CTerrainProperties::FromXML(const CTerrainPropertiesPtr& parent, const VfsPath& pathname)
{
	CXeromyces XeroFile;
	if (XeroFile.Load(g_VFS, pathname) != PSRETURN_OK)
		return CTerrainPropertiesPtr();

	XMBElement root = XeroFile.GetRoot();
	CStr rootName = XeroFile.GetElementString(root.GetNodeName());

	// Check that we've got the right kind of xml document
	if (rootName != "Terrains")
	{
		LOGERROR(
			L"TerrainProperties: Loading %ls: Root node is not terrains (found \"%hs\")",
			pathname.string().c_str(),
			rootName.c_str());
		return CTerrainPropertiesPtr();
	}
	
	#define ELMT(x) int el_##x = XeroFile.GetElementID(#x)
	ELMT(terrain);
	#undef ELMT
	
	// Ignore all non-terrain nodes, loading the first terrain node and
	// returning it.
	// Really, we only expect there to be one child and it to be of the right
	// type, though.
	XERO_ITER_EL(root, child)
	{
		if (child.GetNodeName() == el_terrain)
		{
			CTerrainPropertiesPtr ret (new CTerrainProperties(parent));
			ret->LoadXml(child, &XeroFile, pathname);
			return ret;
		}
		else
		{
			LOGWARNING(
				L"TerrainProperties: Loading %ls: Unexpected node %hs\n",
				pathname.string().c_str(),
				XeroFile.GetElementString(child.GetNodeName()).c_str());
			// Keep reading - typos shouldn't be showstoppers
		}
	}
	
	return CTerrainPropertiesPtr();
}