file

Documentation

Index

• Constants
• func DatFileFooter() []byte
• func DatFileHeader(file string) []byte
• func DecodeBlock(rows []string) ([]byte, error)
• func DecodeLine(s string) ([]byte, error)
• func Encode(data []byte, filename, mode string) ([]byte, error)
• func EncodeBlock(data []byte) ([]byte, error)
• func NewDatFile(dir, fileName string) (*os.File, error)
• type Arena
  • func (na *Arena) Get(len_ int) []byte
• type Decoded
  • func Decode(data []byte) (*Decoded, error)
• type Map
  • func NewMap(f *os.File, opts ...Option) (Map, error)
• type Option
  • func Flag(f int) Option
  • func Length(s int) Option
  • func Offset(o int64) Option
  • func Prot(p int) Option
• type Reader
  • func ScanCSV(data string) *Reader
  • func (s *Reader) Close()
  • func (s *Reader) Err() *gerrors.Error
  • func (s *Reader) Init()
  • func (s *Reader) Rows() [][]string
  • func (s *Reader) Scan() bool

Constants

const (
	DataStartIndex = 23 // file: begin 0755 default.dat\n<data>\nend\n
	DataEndIndex   = -3
)

const (
	Read  = syscall.PROT_READ
	Write = syscall.PROT_WRITE
	Exec  = syscall.PROT_EXEC

	Shared = syscall.MAP_SHARED
)

Functions

func DatFileFooter

func DatFileFooter() []byte

func DatFileHeader

func DatFileHeader(file string) []byte

func DecodeBlock

func DecodeBlock(rows []string) ([]byte, error)

DecodeBlock decodes a uuencoded text block

func DecodeLine

func DecodeLine(s string) ([]byte, error)

DecodeLine decodes a single line of uuencoded text

func Encode

func Encode(data []byte, filename, mode string) ([]byte, error)

Encode encodes data into uuencoded format, with header and footer

func EncodeBlock

func EncodeBlock(data []byte) ([]byte, error)

EncodeBlock encodes data in raw uuencoded format

func NewDatFile

func NewDatFile(dir, fileName string) (*os.File, error)

Types

type Arena

type Arena []byte

func (*Arena) Get

func (na *Arena) Get(len_ int) []byte

type Decoded

type Decoded struct {
	Data     []byte
	Filename string
	Mode     string
}

func Decode

func Decode(data []byte) (*Decoded, error)

type Map

type Map interface {
	io.ReadWriteCloser
	io.Seeker
	io.ReaderAt
	Bytes() []byte
	Len() int
	Pos() int
	MLock() error
	MUnlock() error
	Append([]byte) (int, int, error)
	Peek([]byte, int64, int64) (int, error)
}

func NewMap

func NewMap(f *os.File, opts ...Option) (Map, error)

type Option

type Option func(m *mmap)

func Flag

func Flag(f int) Option

func Length

func Length(s int) Option

func Offset

func Offset(o int64) Option

func Prot

func Prot(p int) Option

type Reader

type Reader struct {
	// contains filtered or unexported fields
}

func ScanCSV

func ScanCSV(data string) *Reader

func (*Reader) Close

func (s *Reader) Close()

func (*Reader) Err

func (s *Reader) Err() *gerrors.Error

func (*Reader) Init

func (s *Reader) Init()

func (*Reader) Rows

func (s *Reader) Rows() [][]string

func (*Reader) Scan

func (s *Reader) Scan() bool