U3D
Open-source, cross-platform 2D and 3D game engine built in C++
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Urho3D::FileSystem Class Reference

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

#include </var/dev/u3d/stable/Source/Urho3D/IO/FileSystem.h>

Inheritance diagram for Urho3D::FileSystem:
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Public Member Functions

 FileSystem (Context *context)
 Construct.
 
 ~FileSystem () override
 Destruct.
 
bool SetCurrentDir (const String &pathName)
 
bool CreateDir (const String &pathName)
 Create a directory.
 
void SetExecuteConsoleCommands (bool enable)
 
int SystemCommand (const 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 String &fileName, const Vector< String > &arguments)
 Run a specific program, block until it exits and return the exit code. Will fail if any allowed paths are defined.
 
unsigned SystemCommandAsync (const 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 String &fileName, const Vector< 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 String &fileName, const String &mode=String::EMPTY)
 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 String &srcFileName, const String &destFileName)
 Copy a file. Return true if successful.
 
bool Rename (const String &srcFileName, const String &destFileName)
 Rename a file. Return true if successful.
 
bool Delete (const String &fileName)
 Delete a file. Return true if successful.
 
void RegisterPath (const 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 String &fileName, unsigned newTime)
 Set a file's last modified time as seconds since 1.1.1970. Return true on success.
 
String GetCurrentDir () const
 
bool GetExecuteConsoleCommands () const
 
bool HasRegisteredPaths () const
 Return whether paths have been registered.
 
bool CheckAccess (const String &pathName) const
 Check if a path is allowed to be accessed. If no paths are registered, all are allowed.
 
unsigned GetLastModifiedTime (const String &fileName) const
 Returns the file's last modified time as seconds since 1.1.1970, or 0 if can not be accessed.
 
bool FileExists (const String &fileName) const
 Check if a file exists.
 
bool DirExists (const String &pathName) const
 Check if a directory exists.
 
void ScanDir (Vector< String > &result, const String &pathName, const String &filter, unsigned flags, bool recursive) const
 Scan a directory for specified files.
 
String GetProgramDir () const
 
String GetUserDocumentsDir () const
 
String GetAppPreferencesDir (const String &org, const String &app) const
 Return the application preferences directory.
 
String GetTemporaryDir () const
 
- 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 StringGetTypeName () const =0
 
virtual const TypeInfoGetTypeInfo () const =0
 Return type info.
 
virtual void OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
 Handle event.
 
bool IsInstanceOf (StringHash type) const
 Check current instance is type of specified type.
 
bool IsInstanceOf (const TypeInfo *typeInfo) const
 Check current instance is type of specified type.
 
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 SubscribeToEvent (StringHash eventType, EventHandler *handler)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, EventHandler *handler)
 Subscribe to a specific sender's event.
 
void SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 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 PODVector< StringHash > &exceptions, bool onlyUserData)
 Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events).
 
void SendEvent (StringHash eventType)
 Send event to all subscribers.
 
void SendEvent (StringHash eventType, VariantMap &eventData)
 Send event with parameters to all subscribers.
 
VariantMapGetEventDataMap () 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, Args... args)
 Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.
 
ContextGetContext () const
 Return execution context.
 
const VariantGetGlobalVar (StringHash key) const
 
const VariantMapGetGlobalVars () const
 
void SetGlobalVar (StringHash key, const Variant &value)
 
ObjectGetSubsystem (StringHash type) const
 Return subsystem by type.
 
ObjectGetEventSender () const
 Return active event sender. Null outside event handling.
 
EventHandlerGetEventHandler () 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 StringGetCategory () const
 
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.
 
RefCountedoperator= (const RefCounted &rhs)=delete
 Prevent assignment.
 
void AddRef ()
 
void ReleaseRef ()
 
int Refs () const
 
int WeakRefs () const
 
RefCountRefCountPtr ()
 Return pointer to the reference count structure.
 

Private Member Functions

 URHO3D_OBJECT (FileSystem, Object)
 
void ScanDirInternal (Vector< String > &result, String path, const String &startPath, const String &filter, unsigned flags, bool recursive) const
 Scan directory, called internally. More...
 
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

HashSet< StringallowedPaths_
 Allowed directories.
 
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 TypeInfoGetTypeInfoStatic ()
 Return type info static.
 
- Protected Attributes inherited from Urho3D::Object
Contextcontext_
 Execution context.
 

Detailed Description

Subsystem for file and directory operations and access control.

Member Function Documentation

◆ GetCurrentDir()

String Urho3D::FileSystem::GetCurrentDir ( ) const

Return the absolute current working directory.

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◆ GetExecuteConsoleCommands()

bool Urho3D::FileSystem::GetExecuteConsoleCommands ( ) const
inline

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

◆ GetProgramDir()

String Urho3D::FileSystem::GetProgramDir ( ) const

Return the program's directory.

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◆ GetTemporaryDir()

String Urho3D::FileSystem::GetTemporaryDir ( ) const

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

◆ GetUserDocumentsDir()

String Urho3D::FileSystem::GetUserDocumentsDir ( ) const

Return the user documents directory.

◆ ScanDirInternal()

void Urho3D::FileSystem::ScanDirInternal ( Vector< String > &  result,
String  path,
const String startPath,
const String filter,
unsigned  flags,
bool  recursive 
) const
private

Scan directory, called internally.

Todo:
Filename may be unnormalized Unicode on Mac OS X. Re-normalize as necessary
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◆ SetCurrentDir()

bool Urho3D::FileSystem::SetCurrentDir ( const String pathName)

Set the current working directory.

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◆ 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: