FX::FXIO Class Reference

FXIO is a base class for a generic i/o device. More...

#include <FXIO.h>

Inheritance diagram for FX::FXIO:

Public Types
enum	{   NoAccess = 0, ReadOnly = 1, WriteOnly = 2, ReadWrite = ReadOnly|WriteOnly,   Append = 4, Truncate = 8, Create = 16, Exclusive = 32,   NonBlocking = 64, Executable = 128, OwnHandle = 256, NoAccessTime = 512,   Inheritable = 1024, Reading = ReadOnly, Writing = ReadWrite|Create|Truncate }
	Access modes. More...
enum	{ Begin = 0, Current = 1, End = 2 }
	Positioning modes. More...
enum	{   OtherExec = 0x00001, OtherWrite = 0x00002, OtherRead = 0x00004, OtherReadWrite = OtherRead|OtherWrite,   OtherFull = OtherReadWrite|OtherExec, GroupExec = 0x00008, GroupWrite = 0x00010, GroupRead = 0x00020,   GroupReadWrite = GroupRead|GroupWrite, GroupFull = GroupReadWrite|GroupExec, OwnerExec = 0x00040, OwnerWrite = 0x00080,   OwnerRead = 0x00100, OwnerReadWrite = OwnerRead|OwnerWrite, OwnerFull = OwnerReadWrite|OwnerExec, AllRead = OtherRead|GroupRead|OwnerRead,   AllWrite = OtherWrite|GroupWrite|OwnerWrite, AllExec = OtherExec|GroupExec|OwnerExec, AllReadWrite = AllRead|AllWrite, AllFull = AllReadWrite|AllExec,   Hidden = 0x00200, Directory = 0x00400, File = 0x00800, SymLink = 0x01000,   SetUser = 0x02000, SetGroup = 0x04000, Sticky = 0x08000, Character = 0x10000,   Block = 0x20000, Socket = 0x40000, Fifo = 0x80000 }
	Permissions. More...
enum	{ Error = -1, Again = -2, Broken = -3 }
	Error return codes for readBlock() and writeBlock() More...

Public Member Functions
virtual FXbool	isOpen () const
	Return true if open.
virtual FXbool	isSerial () const
	Return true if serial access only.
virtual FXuint	mode () const
	Return access mode.
virtual FXbool	mode (FXuint m)
	Change access mode of open device.
virtual FXuint	perms () const
	Return permissions.
virtual FXbool	perms (FXuint p)
	Set permissions.
virtual FXlong	position () const
	Get current file position.
virtual FXlong	position (FXlong offset, FXuint from=FXIO::Begin)
	Change file position, returning new position from start.
virtual FXival	readBlock (void *ptr, FXival count)
	Read block of bytes, returning number of bytes read.
virtual FXival	writeBlock (const void *ptr, FXival count)
	Write block of bytes, returning number of bytes written.
FXbool	readChar (FXchar &ch)
	Read character.
FXbool	writeChar (FXchar ch)
	Write character.
virtual FXlong	truncate (FXlong sz)
	Truncate file.
virtual FXbool	flush ()
	Flush to disk.
virtual FXint	eof ()
	Test if we're at the end; -1 if error.
virtual FXlong	size ()
	Return size.
virtual FXbool	close ()
	Close handle.
virtual	~FXIO ()
	Destroy and close.

Detailed Description

FXIO is a base class for a generic i/o device.

The FXIO implementation provides an endless source or sink of data. You can use FXIO to tally the number of bytes required to save something to storage before actually doing so.

Member Enumeration Documentation

anonymous enum

anonymous enum

Access modes.

Enumerator
NoAccess	Basic access options.
ReadOnly	No access.
WriteOnly	Open for reading.
ReadWrite	Open for writing.
Append	Open for both read and write.
Truncate	Open for append.
Create	Truncate to zero when writing.
Exclusive	Create if it doesn't exist.
NonBlocking	Fail if trying to create a file which already exists.
Executable	Non-blocking i/o.
OwnHandle	Executable (memory map)
NoAccessTime	File handle is ours.
Inheritable	Don't change access time of file.
Reading	Child process can inherit handle.
Writing	Normal options for reading.

anonymous enum

anonymous enum

Positioning modes.

Enumerator
Current	Position from the begin (default)
End	Position relative to current position.

anonymous enum

anonymous enum

Permissions.

Enumerator
OtherExec	Other permissions.
OtherWrite	Others have execute permission.
OtherRead	Others have write permisson.
OtherReadWrite	Others have read permission.
OtherFull	Others have read and write permission.
GroupExec	Others have full access. Group permissions
GroupWrite	Group has execute permission.
GroupRead	Group has write permission.
GroupReadWrite	Group has read permission.
GroupFull	Group has read and write permission.
OwnerExec	Group has full access. Owner permissions
OwnerWrite	Owner has execute permission.
OwnerRead	Owner has write permission.
OwnerReadWrite	Owner has read permission.
OwnerFull	Owner has read and write permission.
AllRead	Owner has full access. Combined permissions
AllWrite	Read permission for all.
AllExec	Write permisson for all.
AllReadWrite	Execute permission for all.
AllFull	Read and write permission for all.
Hidden	Full access for all. Other flags
Directory	Hidden file.
File	Is directory.
SymLink	Is regular file.
SetUser	Is symbolic link. Special mode bits
SetGroup	Set user id.
Sticky	Set group id.
Character	Sticky bit. Device special files
Block	Character device.
Socket	Block device.
Fifo	Socket device.

anonymous enum

anonymous enum

Error return codes for readBlock() and writeBlock()

Enumerator
Again	Error in operation.
Broken	Try again (for non-blocking handles)

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

• /home/jeroen/FOX/fox/fox-1.7.86/include/FXIO.h