Urho3D::FileSystem Class Reference

Subsystem for file and directory operations and access control. More...

#include <Urho3D/IO/FileSystem.h>

Inheritance diagram for Urho3D::FileSystem:

Public Member Functions
	FileSystem (Context *context)
	Construct.
	~FileSystem () override
	Destruct.
bool	SetCurrentDir (const ea::string &pathName)
bool	CreateDir (const ea::string &pathName)
	Create a directory.
void	SetExecuteConsoleCommands (bool enable)
int	SystemCommand (const ea::string &commandLine, bool redirectStdOutToLog=false)
	Run a program using the command interpreter, block until it exits and return the exit code. Will fail if any allowed paths are defined.
int	SystemRun (const ea::string &fileName, const ea::vector< ea::string > &arguments, ea::string &output)
	Run a specific program, block until it exits and return the exit code. Will fail if any allowed paths are defined. Returns STDOUT output of subprocess.
int	SystemRun (const ea::string &fileName, const ea::vector< ea::string > &arguments)
	Run a specific program, block until it exits and return the exit code. Will fail if any allowed paths are defined.
int	SystemSpawn (const ea::string &fileName, const ea::vector< ea::string > &arguments)
	Run a specific program, do not block until it exits. Will fail if any allowed paths are defined.
unsigned	SystemCommandAsync (const ea::string &commandLine)
	Run a program using the command interpreter asynchronously. Return a request ID or M_MAX_UNSIGNED if failed. The exit code will be posted together with the request ID in an AsyncExecFinished event. Will fail if any allowed paths are defined.
unsigned	SystemRunAsync (const ea::string &fileName, const ea::vector< ea::string > &arguments)
	Run a specific program asynchronously. Return a request ID or M_MAX_UNSIGNED if failed. The exit code will be posted together with the request ID in an AsyncExecFinished event. Will fail if any allowed paths are defined.
bool	SystemOpen (const ea::string &fileName, const ea::string &mode=EMPTY_STRING)
	Open a file in an external program, with mode such as "edit" optionally specified. Will fail if any allowed paths are defined.
bool	Copy (const ea::string &srcFileName, const ea::string &destFileName)
	Copy a file. Return true if successful.
bool	Rename (const ea::string &srcFileName, const ea::string &destFileName)
	Rename a file. Return true if successful.
bool	Delete (const ea::string &fileName)
	Delete a file. Return true if successful.
void	RegisterPath (const ea::string &pathName)
	Register a path as allowed to access. If no paths are registered, all are allowed. Registering allowed paths is considered securing the Urho3D execution environment: running programs and opening files externally through the system will fail afterward.
bool	SetLastModifiedTime (const ea::string &fileName, FileTime newTime)
	Set a file's last modified time as seconds since 1.1.1970. Return true on success.
bool	Reveal (const ea::string &path)
	Reveal path or file in OS file browser.
ea::string	GetCurrentDir () const
bool	GetExecuteConsoleCommands () const
bool	HasRegisteredPaths () const
	Return whether paths have been registered.
bool	CheckAccess (const ea::string &pathName) const
	Check if a path is allowed to be accessed. If no paths are registered, all are allowed.
FileTime	GetLastModifiedTime (const ea::string &fileName, bool creationIsModification=false) const
	Returns the file's last modified time as seconds since 1.1.1970, or 0 if can not be accessed.
bool	FileExists (const ea::string &fileName) const
	Check if a file exists.
bool	DirExists (const ea::string &pathName) const
	Check if a directory exists.
void	ScanDir (ea::vector< ea::string > &result, const ea::string &pathName, const ea::string &filter, ScanFlags flags) const
	Scan a directory for specified files.
ea::string	GetProgramDir () const
ea::string	GetProgramFileName () const
	Return the program's executable file path, or empty string if not applicable.
ea::string	GetUserDocumentsDir () const
ea::string	GetAppPreferencesDir (const ea::string &org, const ea::string &app) const
	Return the application preferences directory.
bool	Exists (const ea::string &pathName) const
	Check if a file or directory exists at the specified path.
bool	CopyDir (const ea::string &directoryIn, const ea::string &directoryOut, StringVector *copiedFiles=nullptr)
	Copy files from one directory to another.
bool	CreateDirs (const ea::string &root, const ea::string &subdirectory)
	Create subdirectories. New subdirectories will be made only in a subpath specified by subdirectory.
bool	CreateDirsRecursive (const ea::string &directoryIn)
	Create specified subdirectory and any parent directory if it does not exist.
bool	RemoveDir (const ea::string &directoryIn, bool recursive)
	Remove files in a directory, or remove entire directory recursively.
ea::string	GetTemporaryDir () const
ea::string	FindResourcePrefixPath () const
	Try to find resource prefix path starting from executable and going up.
Public Member Functions inherited from Urho3D::Object
	Object (Context *context)
	Construct.
	~Object () override
	Destruct. Clean up self from event sender & receiver structures.
virtual StringHash	GetType () const =0
virtual const ea::string &	GetTypeName () const =0
virtual const TypeInfo *	GetTypeInfo () const =0
	Return type info.
virtual bool	IsInstanceOf (StringHash type) const =0
	Check whether current instance implements specified type.
virtual void	OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
	Handle event.
virtual void	SerializeInBlock (Archive &archive)
	Serialize content from/to archive. May throw ArchiveException.
template<typename T >
bool	IsInstanceOf () const
	Check current instance is type of specified class.
template<typename T >
T *	Cast ()
	Cast the object to specified most derived class.
template<typename T >
const T *	Cast () const
	Cast the object to specified most derived class.
void	SubscribeToEventManual (StringHash eventType, EventHandler *handler)
	Subscribe to an event that can be sent by any sender.
void	SubscribeToEventManual (Object *sender, StringHash eventType, EventHandler *handler)
	Subscribe to a specific sender's event.
template<class T >
void	SubscribeToEvent (StringHash eventType, T handler)
	Subscribe to an event that can be sent by any sender.
template<class T >
void	SubscribeToEvent (Object *sender, StringHash eventType, T handler)
	Subscribe to a specific sender's event.
void	UnsubscribeFromEvent (StringHash eventType)
	Unsubscribe from an event.
void	UnsubscribeFromEvent (Object *sender, StringHash eventType)
	Unsubscribe from a specific sender's event.
void	UnsubscribeFromEvents (Object *sender)
	Unsubscribe from a specific sender's events.
void	UnsubscribeFromAllEvents ()
	Unsubscribe from all events.
void	UnsubscribeFromAllEventsExcept (const ea::vector< StringHash > &exceptions)
	Unsubscribe from all events except those listed.
void	UnsubscribeFromAllEventsExcept (const ea::vector< Object * > &exceptions)
	Unsubscribe from all events except those with listed senders.
void	SendEvent (StringHash eventType)
	Send event to all subscribers.
void	SendEvent (StringHash eventType, VariantMap &eventData)
	Send event with parameters to all subscribers.
VariantMap &	GetEventDataMap () const
	Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
template<typename... Args>
void	SendEvent (StringHash eventType, const Args &... args)
	Send event with variadic parameter pairs to all subscribers. The parameters are (paramID, paramValue) pairs.
Context *	GetContext () const
	Return execution context.
const Variant &	GetGlobalVar (StringHash key) const
const VariantMap &	GetGlobalVars () const
void	SetGlobalVar (StringHash key, const Variant &value)
Object *	GetSubsystem (StringHash type) const
	Return subsystem by type.
Object *	GetEventSender () const
	Return active event sender. Null outside event handling.
EventHandler *	GetEventHandler () const
	Return active event handler. Null outside event handling.
bool	HasSubscribedToEvent (StringHash eventType) const
	Return whether has subscribed to an event without specific sender.
bool	HasSubscribedToEvent (Object *sender, StringHash eventType) const
	Return whether has subscribed to a specific sender's event.
bool	HasEventHandlers () const
	Return whether has subscribed to any event.
template<class T >
T *	GetSubsystem () const
	Template version of returning a subsystem.
const ea::string &	GetCategory () const
void	SendEvent (StringHash eventType, const VariantMap &eventData)
	Send event with parameters to all subscribers.
void	SetBlockEvents (bool block)
	Block object from sending and receiving events.
bool	GetBlockEvents () const
	Return sending and receiving events blocking status.
Public Member Functions inherited from Urho3D::RefCounted
	RefCounted ()
	Construct. Allocate the reference count structure and set an initial self weak reference.
virtual	~RefCounted ()
	Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.
	RefCounted (const RefCounted &rhs)=delete
	Prevent copy construction.
RefCounted &	operator= (const RefCounted &rhs)=delete
	Prevent assignment.
int	AddRef ()
int	ReleaseRef ()
int	Refs () const
int	WeakRefs () const
RefCount *	RefCountPtr () const
	Return pointer to the reference count structure.
bool	HasScriptObject () const
	Return true if script runtime object wrapping this native object exists.
bool	IsScriptStrongRef () const
	Return true if script reference is strong.

Private Member Functions
	URHO3D_OBJECT (FileSystem, Object)
void	ScanDirInternal (ea::vector< ea::string > &result, ea::string path, const ea::string &startPath, const ea::string &filter, ScanFlags flags) const
	Scan directory, called internally.
void	HandleBeginFrame (StringHash eventType, VariantMap &eventData)
	Handle begin frame event to check for completed async executions.
void	HandleConsoleCommand (StringHash eventType, VariantMap &eventData)
	Handle a console command event.

Private Attributes
ea::hash_set< ea::string >	allowedPaths_
	Allowed directories.
ea::list< AsyncExecRequest * >	asyncExecQueue_
	Async execution queue.
unsigned	nextAsyncExecID_ {1}
	Next async execution ID.
bool	executeConsoleCommands_ {}
	Flag for executing engine console commands as OS-specific system command. Default to true.

Additional Inherited Members
Static Public Member Functions inherited from Urho3D::Object
static const TypeInfo *	GetTypeInfoStatic ()
	Return type info static.
Static Public Attributes inherited from Urho3D::Object
static constexpr ea::array< StringHash, 0 >	TypeHierarchy {}
Protected Attributes inherited from Urho3D::Object
WeakPtr< Context >	context_
	Execution context.

Detailed Description

Subsystem for file and directory operations and access control.

Member Function Documentation

GetCurrentDir()

ea::string Urho3D::FileSystem::GetCurrentDir

(

)

const

Return the absolute current working directory.

GetExecuteConsoleCommands()

bool Urho3D::FileSystem::GetExecuteConsoleCommands ( ) const

inline

Return whether is executing engine console commands as OS-specific system command.

GetProgramDir()

ea::string Urho3D::FileSystem::GetProgramDir

(

)

const

Return the program's directory.

GetTemporaryDir()

ea::string Urho3D::FileSystem::GetTemporaryDir

(

)

const

Return path of temporary directory. Path always ends with a forward slash.

GetUserDocumentsDir()

ea::string Urho3D::FileSystem::GetUserDocumentsDir

(

)

const

Return the user documents directory.

ScanDirInternal()

void Urho3D::FileSystem::ScanDirInternal ( ea::vector< ea::string > &  result, ea::string  path, const ea::string &  startPath, const ea::string &  filter, ScanFlags  flags  ) const

private

Scan directory, called internally.

SetCurrentDir()

bool Urho3D::FileSystem::SetCurrentDir

(

const ea::string &

pathName

)

Set the current working directory.

SetExecuteConsoleCommands()

void Urho3D::FileSystem::SetExecuteConsoleCommands

(

bool

enable

)

Set whether to execute engine console commands as OS-specific system command.

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The documentation for this class was generated from the following files:

• Urho3D/IO/FileSystem.h
• Urho3D/IO/FileSystem.cpp