logview

Documentation

Index

• Constants
• Variables
• type LinePtr
• type LogView
  • func MakeLogView(file *os.File) *LogView
  • func (lv *LogView) Close()
  • func (lv *LogView) FirstLinePtr() (*LinePtr, error)
  • func (lv *LogView) LastLinePtr(linePtr *LinePtr) (*LinePtr, error)
  • func (lv *LogView) Move(linePtr *LinePtr, offset int) (int, *LinePtr, error)
  • func (lv *LogView) NextLinePtr(linePtr *LinePtr) (*LinePtr, error)
  • func (lv *LogView) PrevLinePtr(linePtr *LinePtr) (*LinePtr, error)
  • func (lv *LogView) ReadLineData(linePtr *LinePtr) ([]byte, error)
  • func (lv *LogView) ReadWindow(linePtr *LinePtr, winSize int) ([][]byte, error)
• type MultiBufferByteGetter
  • func MakeMultiBufferByteGetter(file *os.File, bufSize int64) *MultiBufferByteGetter
  • func (mb *MultiBufferByteGetter) GetByte(offset int64) (byte, error)
  • func (mb *MultiBufferByteGetter) NextLine(offset int64) (int64, error)
  • func (mb *MultiBufferByteGetter) PrevLine(offset int64) (int64, error)

Constants

const BufSize = 256 * 1024

const MaxLineSize = 1024

Variables

var ErrBOF = errors.New("beginning of file")

Types

type LinePtr

type LinePtr struct {
	Offset      int64
	RealLineNum int64
	LineNum     int64
}

type LogView

type LogView struct {
	File     *os.File
	MultiBuf *MultiBufferByteGetter
	MatchRe  *regexp.Regexp
}

func MakeLogView

func MakeLogView(file *os.File) *LogView

func (*LogView) Close

func (lv *LogView) Close()

func (*LogView) FirstLinePtr

func (lv *LogView) FirstLinePtr() (*LinePtr, error)

func (*LogView) LastLinePtr

func (lv *LogView) LastLinePtr(linePtr *LinePtr) (*LinePtr, error)

func (*LogView) Move

func (lv *LogView) Move(linePtr *LinePtr, offset int) (int, *LinePtr, error)

func (*LogView) NextLinePtr

func (lv *LogView) NextLinePtr(linePtr *LinePtr) (*LinePtr, error)

func (*LogView) PrevLinePtr

func (lv *LogView) PrevLinePtr(linePtr *LinePtr) (*LinePtr, error)

func (*LogView) ReadLineData

func (lv *LogView) ReadLineData(linePtr *LinePtr) ([]byte, error)

func (*LogView) ReadWindow

func (lv *LogView) ReadWindow(linePtr *LinePtr, winSize int) ([][]byte, error)

type MultiBufferByteGetter

type MultiBufferByteGetter struct {
	File    *os.File
	Offset  int64
	EOF     bool
	Buffers [][]byte
	BufSize int64
}

func MakeMultiBufferByteGetter

func MakeMultiBufferByteGetter(file *os.File, bufSize int64) *MultiBufferByteGetter

func (*MultiBufferByteGetter) GetByte

func (mb *MultiBufferByteGetter) GetByte(offset int64) (byte, error)

func (*MultiBufferByteGetter) NextLine

func (mb *MultiBufferByteGetter) NextLine(offset int64) (int64, error)

func (*MultiBufferByteGetter) PrevLine

func (mb *MultiBufferByteGetter) PrevLine(offset int64) (int64, error)