Add love.filesystem.getInfo. Deprecate love.filesystem.exists/isDirectory/isFile/isSymlink/getLastModified/getSize. Resolves issue #641.

--HG--
branch : minor

src/modules/filesystem/File.cpp

@@ -115,19 +115,19 @@ bool File::getConstant(BufferMode in, const char *&out)
 
 StringMap<File::Mode, File::MODE_MAX_ENUM>::Entry File::modeEntries[] =
 {
-	{"c", File::MODE_CLOSED},
-	{"r", File::MODE_READ},
-	{"w", File::MODE_WRITE},
-	{"a", File::MODE_APPEND},
+	{ "c", MODE_CLOSED },
+	{ "r", MODE_READ   },
+	{ "w", MODE_WRITE  },
+	{ "a", MODE_APPEND },
 };
 
 StringMap<File::Mode, File::MODE_MAX_ENUM> File::modes(File::modeEntries, sizeof(File::modeEntries));
 
 StringMap<File::BufferMode, File::BUFFER_MAX_ENUM>::Entry File::bufferModeEntries[] =
 {
-	{"none", File::BUFFER_NONE},
-	{"line", File::BUFFER_LINE},
-	{"full", File::BUFFER_FULL},
+	{ "none", BUFFER_NONE },
+	{ "line", BUFFER_LINE },
+	{ "full", BUFFER_FULL },
 };
 
 StringMap<File::BufferMode, File::BUFFER_MAX_ENUM> File::bufferModes(File::bufferModeEntries, sizeof(File::bufferModeEntries));

src/modules/filesystem/Filesystem.cpp

@@ -120,5 +120,25 @@ std::string Filesystem::getExecutablePath() const
 #endif
 }
 
+bool Filesystem::getConstant(const char *in, FileType &out)
+{
+	return fileTypes.find(in, out);
+}
+
+bool Filesystem::getConstant(FileType in, const char *&out)
+{
+	return fileTypes.find(in, out);
+}
+
+StringMap<Filesystem::FileType, Filesystem::FILETYPE_MAX_ENUM>::Entry Filesystem::fileTypeEntries[] =
+{
+	{ "file",      FILETYPE_FILE      },
+	{ "directory", FILETYPE_DIRECTORY },
+	{ "symlink",   FILETYPE_SYMLINK   },
+	{ "other",     FILETYPE_OTHER     },
+};
+
+StringMap<Filesystem::FileType, Filesystem::FILETYPE_MAX_ENUM> Filesystem::fileTypes(Filesystem::fileTypeEntries, sizeof(Filesystem::fileTypeEntries));
+
 } // filesystem
 } // love

src/modules/filesystem/Filesystem.h

@@ -25,6 +25,7 @@
 #include "common/config.h"
 #include "common/Module.h"
 #include "common/int.h"
+#include "common/StringMap.h"
 #include "FileData.h"
 #include "File.h"
 
@@ -61,6 +62,23 @@ class Filesystem : public Module
 {
 public:
 
+	enum FileType
+	{
+		FILETYPE_FILE,
+		FILETYPE_DIRECTORY,
+		FILETYPE_SYMLINK,
+		FILETYPE_OTHER,
+		FILETYPE_MAX_ENUM
+	};
+
+	struct Info
+	{
+		// Numbers will be -1 if they cannot be determined.
+		int64 size;
+		int64 modtime;
+		FileType type;
+	};
+
 	static love::Type type;
 
 	Filesystem();
@@ -167,28 +185,10 @@ public:
 	virtual std::string getRealDirectory(const char *filename) const = 0;
 
 	/**
-	 * Checks if a path exists.
-	 * @param path The path to check.
+	 * Gets information about the item at the specified filepath. Returns false
+	 * if nothing exists at the path.
 	 **/
-	virtual bool exists(const char *path) const = 0;
-
-	/**
-	 * Checks if a path is a directory.
-	 * @param dir The directory name to check.
-	 **/
-	virtual bool isDirectory(const char *dir) const = 0;
-
-	/**
-	 * Checks if a filename exists.
-	 * @param file The filename to check.
-	 **/
-	virtual bool isFile(const char *file) const = 0;
-
-	/**
-	 * Gets whether a filepath is actually a symlink.
-	 * Always returns false if symlinks are not enabled.
-	 **/
-	virtual bool isSymlink(const char *filename) const = 0;
+	virtual bool getInfo(const char *filepath, Info &info) const = 0;
 
 	/**
 	 * Creates a directory. Write dir must be set.
@@ -231,19 +231,6 @@ public:
 	 **/
 	virtual void getDirectoryItems(const char *dir, std::vector<std::string> &items) = 0;
 
-	/**
-	 * Gets the last modification time of a file, in seconds
-	 * since the Unix epoch.
-	 * @param filename The name of the file.
-	 **/
-	virtual int64 getLastModified(const char *filename) const = 0;
-
-	/**
-	 * Gets the size of a file in bytes.
-	 * @param filename The name of the file.
-	 **/
-	virtual int64 getSize(const char *filename) const = 0;
-
 	/**
 	 * Enable or disable symbolic link support in love.filesystem.
 	 **/
@@ -274,10 +261,17 @@ public:
 	 **/
 	virtual std::string getExecutablePath() const;
 
+	static bool getConstant(const char *in, FileType &out);
+	static bool getConstant(FileType in, const char *&out);
+
 private:
 
-	//should we save external or internal for Android
+	// Should we save external or internal for Android
 	bool useExternal;
+
+	static StringMap<FileType, FILETYPE_MAX_ENUM>::Entry fileTypeEntries[];
+	static StringMap<FileType, FILETYPE_MAX_ENUM> fileTypes;
+
 }; // Filesystem
 
 } // filesystem

src/modules/filesystem/physfs/Filesystem.cpp

@@ -566,60 +566,53 @@ std::string Filesystem::getRealDirectory(const char *filename) const
 	return std::string(dir);
 }
 
-bool Filesystem::exists(const char *path) const
-{
-	if (!PHYSFS_isInit())
-		return false;
-
-	return PHYSFS_exists(path) != 0;
-}
-
-bool Filesystem::isDirectory(const char *dir) const
+bool Filesystem::getInfo(const char *filepath, Info &info) const
 {
 	if (!PHYSFS_isInit())
 		return false;
 
 #ifdef LOVE_USE_PHYSFS_2_1
 	PHYSFS_Stat stat = {};
-	if (PHYSFS_stat(dir, &stat))
-		return stat.filetype == PHYSFS_FILETYPE_DIRECTORY;
+	if (!PHYSFS_stat(filepath, &stat))
+		return false;
+
+	info.size = (int64) stat.filesize;
+	info.modtime = (int64) stat.modtime;
+
+	if (stat.filetype == PHYSFS_FILETYPE_REGULAR)
+		info.type = FILETYPE_FILE;
+	else if (stat.filetype == PHYSFS_FILETYPE_DIRECTORY)
+		info.type = FILETYPE_DIRECTORY;
+	else if (stat.filetype == PHYSFS_FILETYPE_SYMLINK)
+		info.type = FILETYPE_SYMLINK;
 	else
-		return false;
+		info.type = FILETYPE_OTHER;
 #else
-	return PHYSFS_isDirectory(dir) != 0 && !isSymlink(dir);
-#endif
-}
-
-bool Filesystem::isFile(const char *file) const
-{
-	if (!PHYSFS_isInit())
+	if (!PHYSFS_exists(filepath))
 		return false;
 
-#ifdef LOVE_USE_PHYSFS_2_1
-	PHYSFS_Stat stat = {};
-	if (PHYSFS_stat(file, &stat))
-		return stat.filetype == PHYSFS_FILETYPE_REGULAR;
+	try
+	{
+		File file(filepath);
+		info.size = file.getSize();
+	}
+	catch (love::Exception &)
+	{
+		info.size = -1;
+	}
+
+	info.modtime = (int64) PHYSFS_getLastModTime(filepath);
+
+	if (PHYSFS_isSymbolicLink(filepath))
+		info.type = FILETYPE_SYMLINK;
+	else if (PHYSFS_isDirectory(filepath))
+		info.type = FILETYPE_DIRECTORY;
 	else
-		return false;
-#else
-	return PHYSFS_exists(file) && !isDirectory(file) && !isSymlink(file);
-#endif
-}
+		info.type = FILETYPE_FILE;
 
-bool Filesystem::isSymlink(const char *filename) const
-{
-	if (!PHYSFS_isInit())
-		return false;
-
-#ifdef LOVE_USE_PHYSFS_2_1
-	PHYSFS_Stat stat = {};
-	if (PHYSFS_stat(filename, &stat))
-		return stat.filetype == PHYSFS_FILETYPE_SYMLINK;
-	else
-		return false;
-#else
-	return PHYSFS_isSymbolicLink(filename) != 0;
 #endif
+
+	return true;
 }
 
 bool Filesystem::createDirectory(const char *dir)
@@ -698,34 +691,6 @@ void Filesystem::getDirectoryItems(const char *dir, std::vector<std::string> &it
 	PHYSFS_freeList(rc);
 }
 
-int64 Filesystem::getLastModified(const char *filename) const
-{
-	PHYSFS_sint64 time = -1;
-
-	if (!PHYSFS_isInit())
-		return -1;
-
-#ifdef LOVE_USE_PHYSFS_2_1
-	PHYSFS_Stat stat = {};
-	if (PHYSFS_stat(filename, &stat))
-		time = stat.modtime;
-#else
-	time = PHYSFS_getLastModTime(filename);
-#endif
-
-	if (time == -1)
-		throw love::Exception("Could not determine file modification date.");
-
-	return time;
-}
-
-int64 Filesystem::getSize(const char *filename) const
-{
-	File file(filename);
-	int64 size = file.getSize();
-	return size;
-}
-
 void Filesystem::setSymlinksEnabled(bool enable)
 {
 	if (!PHYSFS_isInit())

src/modules/filesystem/physfs/Filesystem.h

@@ -72,10 +72,7 @@ public:
 
 	std::string getRealDirectory(const char *filename) const;
 
-	bool exists(const char *path) const;
-	bool isDirectory(const char *dir) const;
-	bool isFile(const char *file) const;
-	bool isSymlink(const char *filename) const;
+	bool getInfo(const char *filepath, Info &info) const;
 
 	bool createDirectory(const char *dir);
 
@@ -87,9 +84,6 @@ public:
 
 	void getDirectoryItems(const char *dir, std::vector<std::string> &items);
 
-	int64 getLastModified(const char *filename) const;
-	int64 getSize(const char *filename) const;
-
 	void setSymlinksEnabled(bool enable);
 	bool areSymlinksEnabled() const;
 

src/modules/filesystem/wrap_Filesystem.cpp

@@ -358,31 +358,40 @@ int w_getExecutablePath(lua_State *L)
 	return 1;
 }
 
-int w_exists(lua_State *L)
+int w_getInfo(lua_State *L)
 {
-	const char *arg = luaL_checkstring(L, 1);
-	luax_pushboolean(L, instance()->exists(arg));
-	return 1;
-}
+	const char *filepath = luaL_checkstring(L, 1);
+	Filesystem::Info info = {};
 
-int w_isDirectory(lua_State *L)
-{
-	const char *arg = luaL_checkstring(L, 1);
-	luax_pushboolean(L, instance()->isDirectory(arg));
-	return 1;
-}
+	if (instance()->getInfo(filepath, info))
+	{
+		const char *typestr = nullptr;
+		if (!Filesystem::getConstant(info.type, typestr))
+			return luaL_error(L, "Unknown file type.");
 
-int w_isFile(lua_State *L)
-{
-	const char *arg = luaL_checkstring(L, 1);
-	luax_pushboolean(L, instance()->isFile(arg));
-	return 1;
-}
+		lua_createtable(L, 0, 3);
+
+		lua_pushstring(L, typestr);
+		lua_setfield(L, -2, "type");
+
+		// Lua numbers (doubles) can't fit the full range of 64 bit ints.
+		info.size = std::min(info.size, 0x20000000000000LL);
+		if (info.size >= 0)
+		{
+			lua_pushnumber(L, (lua_Number) info.size);
+			lua_setfield(L, -2, "size");
+		}
+
+		info.modtime = std::min(info.modtime, 0x20000000000000LL);
+		if (info.modtime >= 0)
+		{
+			lua_pushnumber(L, (lua_Number) info.modtime);
+			lua_setfield(L, -2, "modtime");
+		}
+	}
+	else
+		lua_pushnil(L);
 
-int w_isSymlink(lua_State *L)
-{
-	const char *filename = luaL_checkstring(L, 1);
-	luax_pushboolean(L, instance()->isSymlink(filename));
 	return 1;
 }
 
@@ -551,48 +560,6 @@ int w_load(lua_State *L)
 	}
 }
 
-int w_getLastModified(lua_State *L)
-{
-	const char *filename = luaL_checkstring(L, 1);
-
-	int64 time = 0;
-	try
-	{
-		time = instance()->getLastModified(filename);
-	}
-	catch (love::Exception &e)
-	{
-		return luax_ioError(L, "%s", e.what());
-	}
-
-	lua_pushnumber(L, static_cast<lua_Number>(time));
-	return 1;
-}
-
-int w_getSize(lua_State *L)
-{
-	const char *filename = luaL_checkstring(L, 1);
-
-	int64 size = -1;
-	try
-	{
-		size = instance()->getSize(filename);
-	}
-	catch (love::Exception &e)
-	{
-		return luax_ioError(L, "%s", e.what());
-	}
-
-	// Error on failure or if size does not fit into a double precision floating-point number.
-	if (size == -1)
-		return luax_ioError(L, "Could not determine file size.");
-	else if (size >= 0x20000000000000LL)
-		return luax_ioError(L, "Size too large to fit into a Lua number!");
-
-	lua_pushnumber(L, (lua_Number) size);
-	return 1;
-}
-
 int w_setSymlinksEnabled(lua_State *L)
 {
 	instance()->setSymlinksEnabled(luax_checkboolean(L, 1));
@@ -702,7 +669,8 @@ int loader(lua_State *L)
 	{
 		replaceAll(element, "?", modulename);
 
-		if (inst->isFile(element.c_str()))
+		Filesystem::Info info = {};
+		if (inst->getInfo(element.c_str(), info) && info.type != Filesystem::FILETYPE_DIRECTORY)
 		{
 			lua_pop(L, 1);
 			lua_pushstring(L, element.c_str());
@@ -760,7 +728,8 @@ int extloader(lua_State *L)
 			// And ? with just the filename
 			replaceAll(element, "?", tokenized_name);
 
-			if (!inst->isFile(element.c_str()))
+			Filesystem::Info info = {};
+			if (!inst->getInfo(element.c_str(), info) || info.type == Filesystem::FILETYPE_DIRECTORY)
 				continue;
 
 			// Now resolve the full path, as we're bypassing physfs for the next part.
@@ -799,6 +768,85 @@ int extloader(lua_State *L)
 	return 1;
 }
 
+// Deprecated functions.
+
+int w_exists(lua_State *L)
+{
+	luax_markdeprecated(L, "love.filesystem.exists", API_FUNCTION, DEPRECATED_REPLACED, "love.filesystem.getInfo");
+	const char *arg = luaL_checkstring(L, 1);
+	Filesystem::Info info = {};
+	luax_pushboolean(L, instance()->getInfo(arg, info));
+	return 1;
+}
+
+int w_isDirectory(lua_State *L)
+{
+	luax_markdeprecated(L, "love.filesystem.exists", API_FUNCTION, DEPRECATED_REPLACED, "love.filesystem.getInfo");
+	const char *arg = luaL_checkstring(L, 1);
+	Filesystem::Info info = {};
+	bool exists = instance()->getInfo(arg, info);
+	luax_pushboolean(L, exists && info.type == Filesystem::FILETYPE_DIRECTORY);
+	return 1;
+}
+
+int w_isFile(lua_State *L)
+{
+	luax_markdeprecated(L, "love.filesystem.isFile", API_FUNCTION, DEPRECATED_REPLACED, "love.filesystem.getInfo");
+	const char *arg = luaL_checkstring(L, 1);
+	Filesystem::Info info = {};
+	bool exists = instance()->getInfo(arg, info);
+	luax_pushboolean(L, exists && info.type == Filesystem::FILETYPE_FILE);
+	return 1;
+}
+
+int w_isSymlink(lua_State *L)
+{
+	luax_markdeprecated(L, "love.filesystem.isSymlink", API_FUNCTION, DEPRECATED_REPLACED, "love.filesystem.getInfo");
+	const char *filename = luaL_checkstring(L, 1);
+	Filesystem::Info info = {};
+	bool exists = instance()->getInfo(filename, info);
+	luax_pushboolean(L, exists && info.type == Filesystem::FILETYPE_SYMLINK);
+	return 1;
+}
+
+int w_getLastModified(lua_State *L)
+{
+	luax_markdeprecated(L, "love.filesystem.getLastModified", API_FUNCTION, DEPRECATED_REPLACED, "love.filesystem.getInfo");
+
+	const char *filename = luaL_checkstring(L, 1);
+
+	Filesystem::Info info = {};
+	bool exists = instance()->getInfo(filename, info);
+
+	if (!exists)
+		return luax_ioError(L, "File does not exist");
+	else if (info.modtime == -1)
+		return luax_ioError(L, "Could not determine file modification date.");
+
+	lua_pushnumber(L, (lua_Number) info.modtime);
+	return 1;
+}
+
+int w_getSize(lua_State *L)
+{
+	luax_markdeprecated(L, "love.filesystem.getSize", API_FUNCTION, DEPRECATED_REPLACED, "love.filesystem.getInfo");
+
+	const char *filename = luaL_checkstring(L, 1);
+
+	Filesystem::Info info = {};
+	bool exists = instance()->getInfo(filename, info);
+
+	if (!exists)
+		luax_ioError(L, "File does not exist");
+	else if (info.size == -1)
+		return luax_ioError(L, "Could not determine file size.");
+	else if (info.size >= 0x20000000000000LL)
+		return luax_ioError(L, "Size too large to fit into a Lua number!");
+
+	lua_pushnumber(L, (lua_Number) info.size);
+	return 1;
+}
+
 // List of functions to wrap.
 static const luaL_Reg functions[] =
 {
@@ -820,10 +868,6 @@ static const luaL_Reg functions[] =
 	{ "getSourceBaseDirectory", w_getSourceBaseDirectory },
 	{ "getRealDirectory", w_getRealDirectory },
 	{ "getExecutablePath", w_getExecutablePath },
-	{ "exists", w_exists },
-	{ "isDirectory", w_isDirectory },
-	{ "isFile", w_isFile },
-	{ "isSymlink", w_isSymlink },
 	{ "createDirectory", w_createDirectory },
 	{ "remove", w_remove },
 	{ "read", w_read },
@@ -832,8 +876,7 @@ static const luaL_Reg functions[] =
 	{ "getDirectoryItems", w_getDirectoryItems },
 	{ "lines", w_lines },
 	{ "load", w_load },
-	{ "getLastModified", w_getLastModified },
-	{ "getSize", w_getSize },
+	{ "getInfo", w_getInfo },
 	{ "setSymlinksEnabled", w_setSymlinksEnabled },
 	{ "areSymlinksEnabled", w_areSymlinksEnabled },
 	{ "newFileData", w_newFileData },
@@ -841,6 +884,15 @@ static const luaL_Reg functions[] =
 	{ "setRequirePath", w_setRequirePath },
 	{ "getCRequirePath", w_getCRequirePath },
 	{ "setCRequirePath", w_setCRequirePath },
+
+	// Deprecated.
+	{ "exists", w_exists },
+	{ "isDirectory", w_isDirectory },
+	{ "isFile", w_isFile },
+	{ "isSymlink", w_isSymlink },
+	{ "getLastModified", w_getLastModified },
+	{ "getSize", w_getSize },
+
 	{ 0, 0 }
 };
 

src/modules/graphics/wrap_Graphics.cpp

@@ -1220,7 +1220,8 @@ static int w_getShaderSource(lua_State *L, int startidx, bool gles, Shader::Shad
 		size_t slen = 0;
 		const char *str = lua_tolstring(L, i, &slen);
 
-		if (fs != nullptr && fs->isFile(str))
+		Filesystem::Info info = {};
+		if (fs != nullptr && fs->getInfo(str, info))
 		{
 			FileData *fd = nullptr;
 			luax_catchexcept(L, [&](){ fd = fs->read(str); });

src/scripts/boot.lua

@@ -351,7 +351,7 @@ function love.boot()
 	-- before the save directory (the identity should be appended.)
 	pcall(love.filesystem.setIdentity, identity, true)
 
-	if can_has_game and not (love.filesystem.isFile("main.lua") or love.filesystem.isFile("conf.lua")) then
+	if can_has_game and not (love.filesystem.getInfo("main.lua") or love.filesystem.getInfo("conf.lua")) then
 		no_game_code = true
 	end
 
@@ -425,7 +425,7 @@ function love.init()
 
 	-- If config file exists, load it and allow it to update config table.
 	local confok, conferr
-	if (not love.conf) and love.filesystem and love.filesystem.isFile("conf.lua") then
+	if (not love.conf) and love.filesystem and love.filesystem.getInfo("conf.lua") then
 		confok, conferr = pcall(require, "conf")
 	end
 
@@ -539,7 +539,7 @@ function love.init()
 	if love.filesystem then
 		love.filesystem._setAndroidSaveExternal(c.externalstorage)
 		love.filesystem.setIdentity(c.identity or love.filesystem.getIdentity(), c.appendidentity)
-		if love.filesystem.isFile("main.lua") then
+		if love.filesystem.getInfo("main.lua") then
 			require("main")
 		end
 	end

src/scripts/boot.lua.h

@@ -661,10 +661,10 @@ const unsigned char boot_lua[] =
 	0x69, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x74, 0x79, 0x2c, 0x20, 0x74, 0x72, 0x75, 0x65, 0x29, 0x0a,
 	0x09, 0x69, 0x66, 0x20, 0x63, 0x61, 0x6e, 0x5f, 0x68, 0x61, 0x73, 0x5f, 0x67, 0x61, 0x6d, 0x65, 0x20, 0x61, 
 	0x6e, 0x64, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x28, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x73, 
-	0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x69, 0x73, 0x46, 0x69, 0x6c, 0x65, 0x28, 0x22, 0x6d, 0x61, 0x69, 0x6e, 
-	0x2e, 0x6c, 0x75, 0x61, 0x22, 0x29, 0x20, 0x6f, 0x72, 0x20, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x66, 0x69, 0x6c, 
-	0x65, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x69, 0x73, 0x46, 0x69, 0x6c, 0x65, 0x28, 0x22, 0x63, 0x6f, 
-	0x6e, 0x66, 0x2e, 0x6c, 0x75, 0x61, 0x22, 0x29, 0x29, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x0a,
+	0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x67, 0x65, 0x74, 0x49, 0x6e, 0x66, 0x6f, 0x28, 0x22, 0x6d, 0x61, 0x69, 
+	0x6e, 0x2e, 0x6c, 0x75, 0x61, 0x22, 0x29, 0x20, 0x6f, 0x72, 0x20, 0x6c, 0x6f, 0x76, 0x65, 0x2e, 0x66, 0x69, 
+	0x6c, 0x65, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x2e, 0x67, 0x65, 0x74, 0x49, 0x6e, 0x66, 0x6f, 0x28, 0x22, 
+	0x63, 0x6f, 0x6e, 0x66, 0x2e, 0x6c, 0x75, 0x61, 0x22, 0x29, 0x29, 0x20, 0x74, 0x68, 0x65, 0x6e, 0x0a,
 	0x09, 0x09, 0x6e, 0x6f, 0x5f, 0x67, 0x61, 0x6d, 0x65, 0x5f, 0x63, 0x6f, 0x64, 0x65, 0x20, 0x3d, 0x20, 0x74, 
 	0x72, 0x75, 0x65, 0x0a,
 	0x09, 0x65, 0x6e, 0x64, 0x0a,
@@ -783,8 +783,8 @@ const unsigned char boot_lua[] =
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@@ -999,8 +999,8 @@ const unsigned char boot_lua[] =
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