Reads bytes at the specified offset into a buffer.
@discardableResult func read(fromAbsoluteOffest offset: Int, into buffer: inout [UInt8], count: Int? = nil) throws(Errno) -> Int s7SwiftIO14FileDescriptorV4read18fromAbsoluteOffest4into5countS2i_Says5UInt8VGzSiSgtAA5ErrnoVYKF What are these?3S9BUThe bytes successfully read.
import SwiftIOThe SwiftIO library allows you to access and control the hardware in an easy way.
struct FileDescriptorThe FileDescriptor struct is used to perform low-level file operations.
@frozen struct IntA signed integer value type.
@frozen struct UInt8An 8-bit unsigned integer value type.
struct ErrnoThe Errno struct lists all the possible errors.
static func open(_ path: String, _ mode: FileDescriptor.AccessMode = .readWrite, options: FileDescriptor.OpenOptions = FileDescriptor.OpenOptions()) throws(Errno) -> FileDescriptor Open or creates, if does not exist, file.
var size: Int { get }Size of the file.
func close() throws(Errno) Flushes the associated stream and closes the file.
@discardableResult func read(fromAbsoluteOffest offset: Int, into buffer: UnsafeMutableRawBufferPointer, count: Int? = nil) throws(Errno) -> Int Reads bytes at the specified offset into a buffer.
@discardableResult func read(into buffer: inout [UInt8], count: Int? = nil) throws(Errno) -> Int Reads bytes at the current file offset into a buffer.
@discardableResult func read(into buffer: UnsafeMutableRawBufferPointer, count: Int? = nil) throws(Errno) -> Int Reads bytes at the current file offset into a buffer.
@discardableResult func seek(offset: Int, from whence: SeekOrigin = .start) throws(Errno) -> Int Repositions the offset for the given file descriptor.
func sync() throws(Errno) Flushes any cached write of an open file.
func tell() throws(Errno) -> Int Get current file position.
@discardableResult func write(_ string: String) throws(Errno) -> Int Writes the contents of a string at the current file offset.
@discardableResult func write(_ buffer: UnsafeRawBufferPointer, count: Int? = nil) throws(Errno) -> Int Writes the contents of a buffer at the current file offset.
@discardableResult func write(_ buffer: [UInt8], count: Int? = nil) throws(Errno) -> Int Writes the contents of a buffer at the current file offset.
@discardableResult func write(toAbsoluteOffset offset: Int, _ buffer: UnsafeRawBufferPointer, count: Int? = nil) throws(Errno) -> Int Writes the contents of a buffer at the specified offset.
@discardableResult func write(toAbsoluteOffset offset: Int, _ buffer: [UInt8], count: Int? = nil) throws(Errno) -> Int Writes the contents of a buffer at the specified offset.
struct AccessModeThe desired read and write access for a newly opened file.
struct OpenOptionsOptions that specify behavior for a newly-opened file.
struct SeekOriginOptions for specifying what a file descriptor’s offset is relative to.