Analisis Perbandingan Zero Compresion Dengan Difference Coding Pada Kompresi File Audio

  1. Menu

  ByVal e As System. EventArgs ) Handles AboutToolStripMenuItem.Click

  Case

  ByVal e As System. EventArgs ) Handles comboOperasi.SelectedIndexChanged Select Case comboOperasi.SelectedIndex

  System. Object , _

  Const PJG_BUFFER As Integer = 4096 Dim sfdTitle, ofdTitle, sfdFilter, ofdFilter As String Dim fsInput, fsOutput As FileStream Dim csObj As CryptStream Dim compressObj As ZERO.Zero. Compressor Dim decompressObj As ZERO.Zero. Decompressor Dim pesan As New Pesan () Dim Lama As Single Dim fileHslKompresi As String = "" Dim fileHslDekompresi As String = "" Dim fileHslEnkripsi As String = "" Dim fileHslDekripsi As String = "" Private Sub comboOperasi_SelectedIndexChanged( ByVal sender As

  Imports System.IO Public Class frmZeroKom

  2. ZeroKompresi

  End Sub End Class

  frmAbt .Show()

  End Sub Private Sub AboutToolStripMenuItem_Click( ByVal sender As System. Object , _

  Public Class frmMenu Private Sub HelpToolStripMenuItem_Click( ByVal sender As System. Object ,

  System. Object , ByVal e As System. EventArgs ) Handles _ DifferenceCodingToolStripMenuItem.Click KomDekom .Show()

  End Sub Private Sub DifferenceCodingToolStripMenuItem_Click( ByVal sender As _

  System. Object , ByVal e As System. EventArgs ) Handles _ ZeroCompressionToolStripMenuItem.Click frmZeroKom .Show()

  End Sub Private Sub ZeroCompressionToolStripMenuItem_Click( ByVal sender As _

  ByVal e As System. EventArgs ) Handles QuitToolStripMenuItem.Click End

  End Sub Private Sub QuitToolStripMenuItem_Click( ByVal sender As System. Object , _

  frmHelp .Show()

  ByVal e As System. EventArgs ) Handles HelpToolStripMenuItem.Click

  sfdTitle = "Simpan file hasil Kompresi" ofdTitle = "Cari File yang akan diKompresi" ofdFilter = "File (*.wav)|*.wav" sfdFilter = "File hasil Kompresi (*.zc)|*.zc"

  Case

  1 sfdTitle = "Simpan file hasil deKompresi" ofdTitle = "Cari file yang akan dideKompresi" sfdFilter = "Semua file (*.wav)|*.wav" ofdFilter = "File hasil DeKompresi (*.zc)|*.zc"

  End Select If comboOperasi.SelectedIndex >= 0 Then

  aktifkanKomponen() 'kosongkanTextBox() cmdFileAsal.Focus()

  End If End Sub Private Sub cmdProses_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdProses.Click

  Dim LenKunci As Integer

  LenKunci = Len(txtKunci.Text)

  If LenKunci >= 5 Then Dim JamAwal As String Dim JamAkhir As String

  JamAwal = Format(Now, "hh:mm:ss tt" ) proses()

  Dim fileName1 As String = txtFileAsal.Text Dim fileName2 As String = txtFileTujuan.Text

  'Dim fileData As String

  Dim rasio As Single , Size1 As Single , Size2 As Single Dim fileDetails1 As System.IO. FileInfo = New

  System.IO. FileInfo (fileName1)

  Dim fileDetails2 As System.IO. FileInfo = New

  System.IO. FileInfo (fileName2) Size1 = fileDetails1.Length.ToString Size2 = fileDetails2.Length.ToString rasio = ( Math .Abs(Size1 - Size2) / Size1) * 100 lblSize1.Text = Size1 & " Bytes" lblSize2.Text = Size2 & " Bytes" lblRasio.Text = rasio & " %"

List.Items.Add( " Ukuran File Asli Proses: " & comboOperasi.Text & "

"_ & Size1)

List.Items.Add( " Ukuran File Hasil Proses: " & comboOperasi.Text &

" "_ & Size2) List.Items.Add( " Rasio Kompresi: " & rasio & " %" ) JamAkhir = Format(Now, "hh:mm:ss tt" ) Lama = (DateDiff( "s" , JamAkhir, JamAwal)) List.Items.Add( "Waktu: " & Lama & " Detik" ) lblLama.Text = Format( Math .Abs(Lama), "00" ) & " Detik"

  Else

  MsgBox( "Panjang Password Harus > 5 char" ) txtKunci.Focus()

  End If End Sub Private Sub cmdFileAsal_Click( ByVal sender As System. Object , ByVal e _

  As System. EventArgs ) Handles cmdFileAsal.Click

  openDialog.Title = ofdTitle openDialog.Filter = ofdFilter openDialog.ShowDialog()

  If openDialog.FileName.Trim <> "" Then

  txtFileAsal.Text = openDialog.FileName List.Items.Add( " Nama File Asli:" & (openDialog.FileName)) cmdFileTujuan.Focus()

  End If End Sub Private Sub cmdFileTujuan_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdFileTujuan.Click saveDialog.Title = sfdTitle saveDialog.Filter = sfdFilter saveDialog.ShowDialog()

  If saveDialog.FileName.Trim <> "" Then

  txtFileTujuan.Text = saveDialog.FileName List.Items.Add( " Nama File Proses:" & (saveDialog.FileName)) txtKunci.Focus()

  End If End Sub Private Sub txtKunci_KeyPress( ByVal sender As Object , ByVal e As _

  

System.Windows.Forms. KeyPressEventArgs ) Handles txtKunci.KeyPress

  If Asc(e.KeyChar) = 13 Then

  proses()

  End If End Sub Private Sub cmdBatal_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdBatal.Click nonAktifkanKomponen() kosongkanTextBox()

  End Sub Private Sub cmdKeluar_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdKeluar.Click

  Me .Close() End Sub

  #Region "Fungsi dan prosedur" Private Sub proses()

  If comboOperasi.SelectedIndex >= 0 And cekMasukanLengkap() Then Select Case comboOperasi.SelectedIndex

  Case

  List.Items.Add( "Sedang melakukan kompresi..." ) kompresiDekompresiBerkas() List.Items.Add( "-----> Selesai <-----" ) pesan.pesanInfo( "Kompresi telah dilakukan." , "Informasi" )

  Case

  1 List.Items.Add( "Sedang melakukan dekompresi..." ) kompresiDekompresiBerkas() List.Items.Add( "-----> Selesai <-----" )

pesan.pesanInfo( "Dekompresi telah dilakukan." , "Informasi" )

  End Select

  List.Items.Add( "Ok" ) hapusFileTemporer() nonAktifkanKomponen()

  End If End Sub Private Sub hapusFileTemporer()

  Select Case comboOperasi.SelectedIndex Case

  Dim fileDihapus As New FileInfo (fileHslEnkripsi)

  fileDihapus.Delete()

  Case

  

fileHslEnkripsi = arrFileTujuan(arrFileTujuan.Length - 2) & ".tmp"

fsOutput = New FileStream (fileHslEnkripsi, FileMode .OpenOrCreate_, FileAccess .Write)

  bytKunci(ctr) = Convert .ToByte(chrKunci(ctr)) ctr = ctr + 1

  Dim chrKunci() As Char = txtKunci.Text.ToCharArray() Dim bytKunci(chrKunci.Length - 1) As Byte Dim ctr As Int32 = 0 While ctr < chrKunci.Length

  fsOutput.SetLength(0)

  Exit Sub End If

  

pesan.pesanError( "Ukuran maksimal berkas yang dapat diproses adalah

_sebesar 2.147.483.647 bit." , _ "Ukuran berkas terlalu besar" )

  Exit Sub End Try Dim lngPanjangBerkas As Long = fsInput.Length If lngPanjangBerkas > 2147483647 Then

  IOException pesan.pesanError(ex.Message, "Akses berkas ditolak" )

  Catch ex As

  fsOutput = New FileStream(txtFileTujuan.Text, FileMode.OpenOrCreate,_ FileAccess.Write)

  End Select

  1 fsOutput = New FileStream (txtFileTujuan.Text, _ FileMode .OpenOrCreate, FileAccess .Write)

  Case

  Dim arrFileTujuan() As String = Split(txtFileAsal.Text, "." )

  1 Dim fileDihapus As New FileInfo (fileHslDekompresi) fileDihapus.Delete()

  Select Case comboOperasi.SelectedIndex Case

  Exit Sub End Try Try

  IOException pesan.pesanError(ex.Message, "Akses berkas ditolak" )

  Catch ex As

  fsInput = New FileStream(txtFileAsal.Text, FileMode.Open, _ FileAccess.Read)

  End Select

  FileAccess .Read)

  1

fsInput = New FileStream (fileHslDekompresi, FileMode .Open,

_

  Case

  

fsInput = New FileStream (txtFileAsal.Text, FileMode .Open, _

FileAccess .Read)

  Case

  Try Select Case comboOperasi.SelectedIndex

  End Select End Sub Private Sub enkripsiDekripsiBerkas()

  End While csObj = New CryptStream (fsOutput, fsInput.Length, bytKunci)

  Dim bytBuffer(PJG_BUFFER - 1) As Byte Dim lngByteDiproses As Long = 0 Dim intJmlBlok As Integer = 0

  ctr = 0

  While lngByteDiproses < lngPanjangBerkas

  intJmlBlok = fsInput.Read(bytBuffer, 0, PJG_BUFFER)

  Select Case comboOperasi.SelectedIndex Case

  

csObj.tulisHasilEnkripsi(bytBuffer, intJmlBlok, PJG_BUFFER,

ctr)

  Case

  1

csObj.tulisHasilDekripsi(bytBuffer, intJmlBlok, PJG_BUFFER,

ctr)

  End Select

  ctr = ctr + 1 lngByteDiproses = lngByteDiproses + intJmlBlok

  End While

  fsInput.Close() fsOutput.Close()

  End Sub Private Sub kompresiDekompresiBerkas()

  Select Case comboOperasi.SelectedIndex Case

  compressObj = New ZERO.Zero. Compressor (fileHslEnkripsi, _ txtFileTujuan.Text) compressObj.Kompresi()

  Case

  1 Dim arrFileTujuan() As String = Split(txtFileAsal.Text, "." )

fileHslDekompresi = arrFileTujuan(arrFileTujuan.Length - 1) &

".tmp"

decompressObj = New ZERO.Zero. Decompressor (txtFileAsal.Text, _

fileHslDekompresi) decompressObj.dekompresi()

  End Select End Sub Private Sub aktifkanKomponen()

  txtFileAsal.Enabled = True txtFileTujuan.Enabled = True txtKunci.Enabled = True cmdFileAsal.Enabled = True cmdFileTujuan.Enabled = True cmdProses.Enabled = True

  End Sub Private Sub nonAktifkanKomponen()

  txtFileAsal.Enabled = False txtFileTujuan.Enabled = False txtKunci.Enabled = False cmdFileAsal.Enabled = False cmdFileTujuan.Enabled = False cmdProses.Enabled = False

  End Sub Private Sub kosongkanTextBox()

  txtFileAsal.Clear() txtFileTujuan.Clear() txtKunci.Clear() lblSize1.Text = "" lblSize2.Text = "" lblRasio.Text = "" List.Items.Clear() Lama = 0 lblLama.Text = ""

  End Sub Private Function cekMasukanLengkap() As Boolean

  If txtFileAsal.Text.Trim() = "" Then

  pesan.pesanError( "Nama berkas awal belum diisi." , "Masukan tidak lengkap." ) txtFileAsal.Focus()

  Return False ElseIf txtFileTujuan.Text.Trim() = "" Then

  pesan.pesanError( "Nama berkas tujuan belum diisi." , "Masukan tidak _lengkap." ) txtFileTujuan.Focus()

  Return False ElseIf txtKunci.Text.Trim() = "" Then

  pesan.pesanError( "Kata kunci belum diisi." , "Masukan tidak lengkap." ) txtKunci.Focus()

  Return False ElseIf txtKunci.Text.Length < 5 Then

  

pesan.pesanError( "Kata kunci harus terdiri dari minimal karakter." ,

_ "Masukan tidak lengkap." ) txtKunci.Focus()

  Return False Else

  Return True End If

  End Function #End Region

  Private Sub txtKunci_TextChanged( ByVal sender As System. Object , ByVal e As

  System. EventArgs ) Handles txtKunci.TextChanged cmdProses.Enabled = True

  End Sub End Class

  Imports System.IO Public Class frmDiffCoding

  Const PJG_BUFFER As Integer = 4096 Dim sfdTitle, ofdTitle, sfdFilter, ofdFilter As String Dim fsInput, fsOutput As FileStream Dim csObj As CryptStream Dim compressObj As DIFF.Diff. Compressor Dim decompressObj As DIFF.Diff. Decompressor Dim pesan As New Pesan () Dim fileHslKompresi As String = "" Dim fileHslDekompresi As String = "" Dim fileHslEnkripsi As String = "" Dim fileHslDekripsi As String = ""

  Dim Lama As Single Private Sub comboOperasi_SelectedIndexChanged( ByVal sender As

  System. Object , _

  ByVal e As System. EventArgs ) Handles comboOperasi.SelectedIndexChanged Select Case comboOperasi.SelectedIndex

  Case

  sfdTitle = "Simpan file hasil Kompresi" ofdTitle = "Cari File yang akan diKompresi" ofdFilter = "File (*.wav)|*.wav" sfdFilter = "File hasil Kompresi (*.dc)|*.dc"

  Case

  1 sfdTitle = "Simpan file hasil deKompresi" ofdTitle = "Cari file yang akan dideKompresi" sfdFilter = "Semua file (*.wav)|*.wav" ofdFilter = "File hasil DeKompresi (*.dc)|*.dc"

  End Select If comboOperasi.SelectedIndex >= 0 Then

  aktifkanKomponen() kosongkanTextBox() cmdFileAsal.Focus()

  End If End Sub Private Sub cmdProses_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdProses.Click

  Dim LenKunci As Integer

  LenKunci = Len(txtKunci.Text)

  If LenKunci >= 5 Then Dim JamAwal As String

  Dim JamAkhir As String

  JamAwal = Format(Now, "hh:mm:ss tt" ) proses()

  Dim fileName1 As String = txtFileAsal.Text Dim fileName2 As String = txtFileTujuan.Text Dim rasio As Single , Size1 As Single , Size2 As Single Dim fileDetails1 As System.IO. FileInfo = New

  System.IO. FileInfo (fileName1)

  Dim fileDetails2 As System.IO. FileInfo = New

  System.IO. FileInfo (fileName2) Size1 = fileDetails1.Length.ToString Size2 = fileDetails2.Length.ToString rasio = ( Math .Abs(Size1 - Size2) / Size1) * 100 lblSize1.Text = Size1 & " Bytes" lblSize2.Text = Size2 & " Bytes" lblRasio.Text = rasio & " %"

List.Items.Add( " Ukuran File Asli Proses: " & comboOperasi.Text & "

" & _Size1)

List.Items.Add( " Ukuran File Hasil Proses: " & comboOperasi.Text &

" " & _Size2) List.Items.Add( " Rasio Kompresi: " & rasio & " %" ) JamAkhir = Format(Now, "hh:mm:ss tt" ) Lama = (DateDiff( "s" , JamAkhir, JamAwal)) lblLama.Text = Format( Math .Abs(Lama), "00" ) & " Detik"

  Else

  MsgBox( "Panjang Password Harus > 5 char" ) txtKunci.Focus()

  End If End Sub Private Sub cmdFileAsal_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdFileAsal.Click openDialog.Title = ofdTitle openDialog.Filter = ofdFilter openDialog.ShowDialog()

  If openDialog.FileName.Trim <> "" Then

  txtFileAsal.Text = openDialog.FileName cmdFileTujuan.Focus()

  End If End Sub Private Sub cmdFileTujuan_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdFileTujuan.Click saveDialog.Title = sfdTitle saveDialog.Filter = sfdFilter saveDialog.ShowDialog()

  If saveDialog.FileName.Trim <> "" Then

  txtFileTujuan.Text = saveDialog.FileName txtKunci.Focus()

  End If End Sub Private Sub txtKunci_KeyPress( ByVal sender As Object , ByVal e As _

  

System.Windows.Forms. KeyPressEventArgs ) Handles txtKunci.KeyPress

  If Asc(e.KeyChar) = 13 Then

  proses()

  End If End Sub Private Sub cmdBatal_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdBatal.Click nonAktifkanKomponen() kosongkanTextBox()

  End Sub Private Sub cmdKeluar_Click( ByVal sender As System. Object , ByVal e As _

  System. EventArgs ) Handles cmdKeluar.Click

  Me .Close() End Sub

  #Region "Fungsi dan prosedur" Private Sub proses()

  If comboOperasi.SelectedIndex >= 0 And cekMasukanLengkap() Then Select Case comboOperasi.SelectedIndex

  Case

  enkripsiDekripsiBerkas() List.Items.Add( "Sedang melakukan kompresi..." ) kompresiDekompresiBerkas() List.Items.Add( "Proses selesai." ) pesan.pesanInfo( "Kompresi telah dilakukan." , "Informasi" )

  Case

  1 List.Items.Add( "Sedang melakukan dekompresi..." ) kompresiDekompresiBerkas() enkripsiDekripsiBerkas() List.Items.Add( "Proses selesai." )

pesan.pesanInfo( "Dekompresi telah dilakukan." , "Informasi" )

  End Select

  List.Items.Add( "Aplikasi siap." ) hapusFileTemporer() nonAktifkanKomponen()

  End If End Sub Private Sub hapusFileTemporer()

  Select Case comboOperasi.SelectedIndex Case

  Dim arrFileTujuan() As String = Split(txtFileAsal.Text, "." )

  End While

  bytKunci(ctr) = Convert .ToByte(chrKunci(ctr)) ctr = ctr + 1

  Dim chrKunci() As Char = txtKunci.Text.ToCharArray() Dim bytKunci(chrKunci.Length - 1) As Byte Dim ctr As Int32 = 0 While ctr < chrKunci.Length

  fsOutput.SetLength(0)

  Exit Sub End If

  pesan.pesanError( "Ukuran berkas terlalu besar" )

  Exit Sub End Try Dim lngPanjangBerkas As Long = fsInput.Length If lngPanjangBerkas > 2147483647 Then

  IOException pesan.pesanError(ex.Message, "Akses berkas ditolak" )

  End Select Catch ex As

  1 fsOutput = New FileStream (txtFileTujuan.Text, _ FileMode .OpenOrCreate, FileAccess .Write)

  Case

  

fileHslEnkripsi = arrFileTujuan(arrFileTujuan.Length - 2) ".tmp"

fsOutput = New FileStream (fileHslEnkripsi, FileMode ._ OpenOrCreate, FileAccess .Write)

  Select Case comboOperasi.SelectedIndex Case

  Dim fileDihapus As New FileInfo (fileHslEnkripsi)

  Exit Sub End Try Try

  IOException pesan.pesanError(ex.Message, "Akses berkas ditolak" )

  End Select Catch ex As

  FileAccess .Read)

  1

fsInput = New FileStream (fileHslDekompresi, FileMode .Open,

_

  Case

  

fsInput = New FileStream (txtFileAsal.Text, FileMode .Open, _

FileAccess .Read)

  Case

  Try Select Case comboOperasi.SelectedIndex

  End Select End Sub Private Sub enkripsiDekripsiBerkas()

  1 Dim fileDihapus As New FileInfo (fileHslDekompresi) fileDihapus.Delete()

  Case

  fileDihapus.Delete()

  csObj = New CryptStream (fsOutput, fsInput.Length, bytKunci)

  Dim bytBuffer(PJG_BUFFER - 1) As Byte Dim lngByteDiproses As Long = 0 Dim intJmlBlok As Integer = 0

  ctr = 0

  While lngByteDiproses < lngPanjangBerkas

  intJmlBlok = fsInput.Read(bytBuffer, 0, PJG_BUFFER)

  Select Case comboOperasi.SelectedIndex Case

  csObj.tulisHasilEnkripsi(bytBuffer, intJmlBlok, PJG_BUFFER,ctr)

  Case

  1 csObj.tulisHasilDekripsi(bytBuffer, intJmlBlok, PJG_BUFFER,ctr)

  End Select

  ctr = ctr + 1 lngByteDiproses = lngByteDiproses + intJmlBlok

  End While

  fsInput.Close() fsOutput.Close()

  End Sub Private Sub kompresiDekompresiBerkas()

  Select Case comboOperasi.SelectedIndex Case

  compressObj = New DIFF.Diff. Compressor (fileHslEnkripsi, txtFileTujuan.Text) compressObj.Kompresi()

  Case

  1 Dim arrFileTujuan() As String = Split(txtFileAsal.Text, "." )

fileHslDekompresi = arrFileTujuan(arrFileTujuan.Length - 1) &

"._tmp"

decompressObj = New DIFF.Diff. Decompressor (txtFileAsal.Text, _

fileHslDekompresi) decompressObj.dekompresi()

  End Select End Sub Private Sub aktifkanKomponen()

  txtFileAsal.Enabled = True txtFileTujuan.Enabled = True txtKunci.Enabled = True cmdFileAsal.Enabled = True cmdFileTujuan.Enabled = True cmdProses.Enabled = True

  End Sub Private Sub nonAktifkanKomponen()

  txtFileAsal.Enabled = False txtFileTujuan.Enabled = False txtKunci.Enabled = False cmdFileAsal.Enabled = False cmdFileTujuan.Enabled = False cmdProses.Enabled = False

  End Sub Private Sub kosongkanTextBox()

  txtFileAsal.Clear() txtFileTujuan.Clear() txtKunci.Clear() lblSize1.Text = "" lblSize2.Text = "" txtKunci.Clear() lblRasio.Text = "" lama = 0 lblLama.Text = ""

  End Sub Private Function cekMasukanLengkap() As Boolean

  If txtFileAsal.Text.Trim() = "" Then

  pesan.pesanError( "Nama berkas awal belum diisi." , _ "Masukan tidak lengkap." ) txtFileAsal.Focus()

  Return False ElseIf txtFileTujuan.Text.Trim() = "" Then

  pesan.pesanError( "Nama berkas tujuan belum diisi." , _ "Masukan tidak lengkap." ) txtFileTujuan.Focus()

  Return False ElseIf txtKunci.Text.Trim() = "" Then

  pesan.pesanError( "Kata kunci belum diisi." , _ "Masukan tidak lengkap." ) txtKunci.Focus()

  Return False ElseIf txtKunci.Text.Length < 5 Then

  pesan.pesanError( "Kata kunci harus terdiri dari minimal 5 karakter." ,_ "Masukan tidak lengkap." ) txtKunci.Focus()

  Return False Else

  Return True End If

  End Function #End Region End Class

  Namespace ZERO #Region " NAMESPACE : ZERO "

  Namespace Zero #Region " CLASS : Compressor "

  Public Class Compressor Private Overloads Function Equals( ByVal objA As Object , ByVal

  objB As_

  Object ) As Boolean End Function Private Overloads Function ReferenceEquals( ByVal objA As Object ,

  _

  ByVal objB As Object ) As Boolean End Function Public ReadOnly Property Value() As Long

  Get Dim lngValue As Long If Not ( Me .fsInput Is Nothing ) Then

  Try

  lngValue = Me .fsInput.Position

  Catch ex As Exception End Try

  End If Return lngValue End Get End Property Public ReadOnly Property Length() As Long

  Get Static lngLength As Long = -1 If lngLength = -1 Then

  Loop Dim bytXmlLength() As Byte = _

  Me .bsOutput = New

  IO. BufferedStream ( Me .fsOutput, _ Zero. Internal .pjgBuffer)

  Dim strXML As String =

  Zero. Internal .NodesToString( Me .TreeNodes)

  Dim bytXML() As Byte = _

  System.Text. Encoding .Default.GetBytes(strXML) 'tulis panjang XML, dalam 10 byte.

  Dim xmlLength As String = bytXML.Length.ToString Do Until xmlLength.Length = 10 : xmlLength = " " & xmlLength : _

  System.Text. Encoding .Default.GetBytes(xmlLength)

  Me .bsInput = New

  Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim strZerro As String Dim readByte As Integer Dim JumZerro As Integer Dim KodingZerro As String Do Until readByte = 0

  readByte = Me .bsInput.ReadByte

  If Not readByte = 0 Then

  strZerro = strZerro & "0"

  End If

  JumZerro = Len(strZerro) KodingZerro = "0" & JumZerro

  IO. BufferedStream ( Me .fsInput, _ Zero. Internal .pjgBuffer)

  IO. FileMode .Create)

  Dim fileInfo As New

  Private bsOutput As

  IO. FileInfo ( Me .Input) lngLength = fileInfo.Length

  End If Return lngLength

  End Get End Property Private Input As String Private Output As String Private fsInput As

  

IO. FileStream

  Private fsOutput As

  IO. FileStream

  Private bsInput As

  IO. BufferedStream

  IO. BufferedStream

  IO. FileStream ( Me .Output,

  Private TreeNodes() As Internal . ZeroTreeNode Public Sub New ( ByVal Input As String , ByVal Output As String )

  Me .Input = Input Me .Output = Output

  End Sub Public Sub ZerroKomp()

  Me .TreeNodes = Zero. Internal .ambilZeroTreeNodes( Me .Input)

  Zero. Internal .GetZeroTree( Me .TreeNodes)

  Me .fsInput = New

  IO. FileStream ( Me .Input, IO. FileMode .Open)

  Me .fsOutput = New

  If strZerro.Length > 8 Then Dim byteOut As Byte = _

  CByte (binaryDecimalConverter.GetDecimal(strZerro._

  Substring(0, 8)))

  Me .bsOutput.WriteByte(byteOut)

  strZerro = strZerro.Remove(0, 8)

  End If Loop

  End Sub Public Sub ZerroDekom()

  Me .TreeNodes = Zero. Internal .ambilZeroTreeNodes( Me .Input)

  Zero. Internal .GetZeroTree( Me .TreeNodes)

  Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim readByte As Integer Dim DekodingZerro As String Dim DekodingAllZerro As String Dim ByteZerro As Integer Do Until readByte = "0"

  readByte = Me .bsInput.ReadByte

  If readByte = "0" Then

  ByteZerro = Right(readByte, 1)

  End If

  DekodingZerro = ByteZerro * "0"

  Loop

  DekodingAllZerro = DekodingAllZerro & DekodingZerro

  End Sub Public Sub Kompresi()

  Me .TreeNodes = Zero. Internal .ambilZeroTreeNodes( Me .Input)

  Zero. Internal .GetZeroTree( Me .TreeNodes)

  Me .fsInput = New

  IO. FileStream ( Me .Input, IO. FileMode .Open)

  Me .fsOutput = New

  IO. FileStream ( Me .Output,

  IO. FileMode .Create)

  Me .bsInput = New

  IO. BufferedStream ( Me .fsInput, _ Zero. Internal .pjgBuffer)

  Me .bsOutput = New

  IO. BufferedStream ( Me .fsOutput, _ Zero. Internal .pjgBuffer)

  Dim strXML As String =

  Zero. Internal .NodesToString( Me .TreeNodes)

  Dim bytXML() As Byte = _

  System.Text. Encoding .Default.GetBytes(strXML)

  Dim xmlLength As String = bytXML.Length.ToString Do Until xmlLength.Length = 10 : xmlLength = " " _

  & xmlLength : Loop

  Dim bytXmlLength() As Byte = _

  System.Text. Encoding .Default.GetBytes(xmlLength)

  Me .bsOutput.Write(bytXmlLength, 0, bytXmlLength.Length) Me .bsOutput.Position += 10 Me .bsOutput.Write(bytXML, 0, bytXML.Length) Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim strBinary As String Dim readByte As Integer Do Until readByte = -1

  readByte = Me .bsInput.ReadByte

  If Not readByte = -1 Then Dim strPath As String = Me .TreeNodes(readByte).Path

  strBinary = strBinary & strPath

  End If If strBinary.Length > 8 Then

  Dim byteOut As Byte = _ CByte (binaryDecimalConverter.GetDecimal(strBinary.Substring(0, 8))) Me .bsOutput.WriteByte(byteOut)

  strBinary = strBinary.Remove(0, 8)

  Catch ex As Exception End Try

  IO. BufferedStream

  Private bsOutput As

  

IO. BufferedStream

  Private bsInput As

  

IO. FileStream

  Private fsOutput As

  IO. FileStream

  End Get End Property Private Input As String Private Output As String Private fsInput As

  End If Return lngLength

  IO. FileInfo ( Me .Input) lngLength = fileInfo.Length

  Dim fileInfo As New

  Get Static lngLength As Long = -1 If lngLength = -1 Then

  End Get End Property Public ReadOnly Property Length() As Long

  End If Return lngValue

  lngValue = Me .fsInput.Position

  End If Loop

  Try

  Get Dim lngValue As Long If Not ( Me .fsInput Is Nothing ) Then

  ByVal objB As Object ) As Boolean End Function Public ReadOnly Property Value() As Long

  End Function Private Overloads Function ReferenceEquals( ByVal objA As Object ,

  objB As Object ) As Boolean

  Public Class Decompressor Private Overloads Function Equals( ByVal objA As Object , ByVal

  #End Region #Region " CLASS : Decompressor "

  End Sub End Class

  End If Me .bsInput.Close() Me .bsOutput.Close() Me .fsInput.Close() Me .fsOutput.Close()

  Me .bsOutput.Position = 10 Me .bsOutput.Write(bytLeftovers, 0, bytLeftovers.Length)

  System.Text. Encoding .Default.GetBytes(strBinary)

  Dim bytLeftovers() As Byte = _

  strBinary : Loop

  If Not strBinary = "" Then Do Until strBinary.Length = 10 : strBinary = " " & _

  Private Tree As Internal . ZeroTreeNode

  Private currentNode As Internal . ZeroTreeNode Public Sub New ( ByVal Input As String , ByVal Output As String )

  Me .Input = Input Me .Output = Output

  End Sub Public Sub dekompresi()

  Me .fsInput = New

  IO. FileStream ( Me .Input, IO. FileMode .Open)

  Me .fsOutput = New

  IO. FileStream ( Me .Output,

  IO. FileMode .Create)

  Me .bsInput = New

  IO. BufferedStream ( Me .fsInput, _ Zero. Internal .pjgBuffer)

  Me .bsOutput = New

  IO. BufferedStream ( Me .fsOutput, _ Zero. Internal .pjgBuffer)

  Dim bytTreeNodesAsStringLength(9) As Byte Me .bsInput.Read(bytTreeNodesAsStringLength, 0, _

  bytTreeNodesAsStringLength.Length)

  Dim treeNodesAsStringLength As Integer = Integer .Parse(System.Text. Encoding .Default.GetString _

  (bytTreeNodesAsStringLength).Replace( " " , "" ))

  Dim bytLeftOvers(9) As Byte Me .bsInput.Read(bytLeftOvers, 0, bytLeftOvers.Length) Dim strLeftovers As String =

  System.Text. Encoding .Default.GetString(bytLeftOvers).Replace( " " , "" )

  Dim bytXml(treeNodesAsStringLength - 1) As Byte Me .bsInput.Read(bytXml, 0, treeNodesAsStringLength) Dim strXML As String =

  System.Text. Encoding .Default.GetString(bytXml)

  Dim TreeNodes() As Internal . ZeroTreeNode =

  Zero. Internal .StringToNodes(strXML)

  Me .Tree = Zero. Internal .GetZeroTree(TreeNodes) Me .currentNode = Me .Tree Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim readByte As Integer Do Until (readByte = -1)

  readByte = Me .bsInput.ReadByte

  If Not readByte = -1 Then Dim strBinary As String = _

  binaryDecimalConverter.GetBinary(readByte)

  Me .dekripsiBits(strBinary) End If

  Loop Me .dekripsiBits(strLeftovers) Me .bsInput.Close() Me .bsOutput.Close() Me .fsInput.Close() Me .fsOutput.Close()

  End Sub Private Sub dekripsiBits( ByVal Bits As String )

  Dim x As Integer For x = 0 To (Bits.Length - 1)

  Select Case Bits.Chars(x).ToString Case "0"

  Me .currentNode = Me .currentNode.Left Case "1"

  Me .currentNode = Me .currentNode.Right End Select If Not ( Me .currentNode.Character = -1) Then

  Me .bsOutput.WriteByte( CByte ( Me .currentNode.Character)) Me .currentNode = Me .Tree

  End If Next x

  End Sub End Class

  #End Region #Region " CLASS : Internal "

  Friend Class Internal Public Const pjgBuffer As Integer = (1024) * 4

  #Region " FUNCTION : GetZeroTreeNodes " Public Shared Function ambilZeroTreeNodes( ByVal File As String )

  As _

  ZeroTreeNode ()

  Dim ZeroTreeNodes(255) As ZeroTreeNode Dim x As Integer For x = 0 To 255

  ZeroTreeNodes(x) = New ZeroTreeNode ZeroTreeNodes(x).Character = x

  Next x Dim fileStream As New

  IO. FileStream (File, IO. FileMode .Open)

  Dim readByte As Integer Do Until readByte = -1

  readByte = fileStream.ReadByte

  If Not readByte = -1 Then

  ZeroTreeNodes(readByte).Weight += 1

  End If Loop

  fileStream.Close()

  Return ZeroTreeNodes End Function

  #End Region #Region " FUNCTION : GetZeroTree "

  Public Shared Function GetZeroTree( ByVal TreeNodes() As _

  ZeroTreeNode ) As ZeroTreeNode

  Dim tempTreeNodes() As ZeroTreeNode = CType (TreeNodes.Clone,

  _ ZeroTreeNode ())

  Do Until tempTreeNodes.Length = 1

  Array .Sort(tempTreeNodes, New ZeroTreeNodeComparer )

  Dim node1 As ZeroTreeNode =

  tempTreeNodes(tempTreeNodes._ Length - 1)

  Dim node2 As ZeroTreeNode =

  tempTreeNodes(tempTreeNodes._ Length - 2)

  Dim newNode As New ZeroTreeNode

  newNode.Character = -1 newNode.Weight = node1.Weight + node2.Weight newNode.Left = node1 newNode.Right = node2 node1.Parent = newNode node2.Parent = newNode

  ReDim Preserve tempTreeNodes(tempTreeNodes.Length - 3) ReDim Preserve tempTreeNodes(tempTreeNodes.Length)

  tempTreeNodes(tempTreeNodes.Length - 1) = newNode

  Loop Return tempTreeNodes(0)

  End Function #End Region #Region " FUNCTION : NodesToString/StringToNodes "

  Public Shared Function NodesToString( ByVal TreeNodes() As _

  ZeroTreeNode ) As String

  Dim characters(255) As String Dim weights(255) As String Dim x As Integer For x = 0 To 255

  characters(x) = CStr (TreeNodes(x).Character) weights(x) = CStr (TreeNodes(x).Weight)

  Next x Return String .Join( "#" , characters) & "%" & String .Join( "#" ,

  weights)

  End Function Public Shared Function StringToNodes( ByVal Xml As String ) As _

  ZeroTreeNode ()

  Dim characters() As String = _

  Xml.Split( "%" .ToCharArray)(0).Split( "#" .ToCharArray)

  Dim weights() As String = _

  Xml.Split( "%" .ToCharArray)(1).Split( "#" .ToCharArray)

  Dim TreeNodes(255) As ZeroTreeNode Dim x As Integer For x = 0 To 255

  TreeNodes(x) = New ZeroTreeNode TreeNodes(x).Character = CInt (characters(x)) TreeNodes(x).Weight = CLng (weights(x))

  Next x Return TreeNodes

  End Function #End Region #Region " CLASS : ZeroTreeNode "

  Public Class ZeroTreeNode Public Sub New () End Sub Private Shadows Function Equals() As Boolean

  Return False End Function Private Shadows Function ReferenceEquals() As Boolean

  Return False End Function Public Character As Integer = -1 Public Weight As Long = 0

  <System.Xml.Serialization. XmlIgnore ()> Public Parent As ZeroTreeNode <System.Xml.Serialization. XmlIgnore ()> Public Left As ZeroTreeNode <System.Xml.Serialization. XmlIgnore ()> Public Right As _

  ZeroTreeNode <System.Xml.Serialization. XmlIgnore ()> Public ReadOnly Property Path() As String 'the binary path to the node.

  Get Static strPath As String If strPath Is Nothing Then

  If Not ( Me .Parent Is Nothing ) Then If ( Me .Parent.Left Is Me ) Then strPath = "0" If ( Me .Parent.Right Is Me ) Then strPath = "1"

  strPath = Parent.Path & strPath

  End If End If Return strPath

  End Get End Property

  End Class #End Region #Region " CLASS : ZeroTreeNodeComparer "

  Public Class ZeroTreeNodeComparer Implements

  IComparer

  Public Sub New () End Sub Public Function Compare( ByVal x As Object , ByVal y As Object ) As Integer Implements System.Collections.

  IComparer .Compare

  Dim returnVal As Integer = -1 Dim a As Double = CType (x, ZeroTreeNode ).Weight Dim b As Double = CType (y, ZeroTreeNode ).Weight If a > b Then

  returnVal = 1

  ElseIf a < b Then

  returnVal = -1

  ElseIf a = b Then

  returnVal = 0

  End If

  returnVal *= -1

  Return returnVal End Function

  End Class #End Region #Region " CLASS : BinaryDecimalConverter "

  Public Class BinaryDecimalConverter Private hashGetDecimal As Hashtable Private hashGetBinary As Hashtable Public Function GetDecimal( ByVal strBinary As String ) As

  Integer If Me .hashGetDecimal Is Nothing Then

  Me .hashGetDecimal = New Hashtable Dim x As Integer For x = 0 To 255

  Me .hashGetDecimal( Me .GetBinaryInternal(x)) = x Next x

  End If Return CInt ( Me .hashGetDecimal(strBinary))

  End Function Public Function GetBinary( ByVal intDecimal As Integer ) As

  String If Me .hashGetBinary Is Nothing Then

  Me .hashGetBinary = New Hashtable Dim x As Integer For x = 0 To 255

  Me .hashGetBinary(x) = Me .GetBinaryInternal(x) Next x

  End If Return CStr ( Me .hashGetBinary(intDecimal)) End Function Private Function GetBinaryInternal( ByVal intDecimal AS Integer )

  As String Dim Y As Integer Dim strBinary As String While (intDecimal \ 2) > 0

  Y = intDecimal \ 2

  If intDecimal > 1 Then

  

strBinary = Val( CStr (intDecimal - (Y * 2))) & _

strBinary

  End If

  intDecimal = Y

  End While

  strBinary = intDecimal & strBinary

  Do Until strBinary.Length = 8

  strBinary = "0" & strBinary

  Loop Return strBinary

  End Function Private Function GetDecimalInternal( ByVal strBinary As String )

  As Integer Dim sngNumber As Integer Dim x As Integer Dim Tmp As Integer Dim Output As Integer

  sngNumber = CInt (strBinary)

  For x = 0 To Len( CStr (sngNumber)) - 1

  Tmp = CInt (Right( CStr (sngNumber), 1))

  If Tmp = 1 Then

  Tmp = CInt (Tmp * Math .Pow(2, x))

  End If

  Output = Output + Tmp Tmp = 1

  If Len( CStr (sngNumber)) > 1 Then

  sngNumber = CInt (Left( CStr (sngNumber), _

Len( CStr (sngNumber)) - 1))

  Else

  sngNumber = 0

  End If Next Return Output

  End Function Private Function GetPowerInternal( ByRef Value As Integer , _

  ByRef Power As Integer ) As Integer Dim result As Integer If Power > 1 Then

  Dim x As Integer For x = 2 To Power

  Value = Value * 2

  Next

  result = Value

  Else If Power = 0 Then result = 1 If Power = 1 Then result = Value

  End If Return result

  End Function End Class

  #End Region End Class

  IO. FileInfo ( Me .Input) lngLength = fileInfo.Length

  Me .TreeNodes = Diff. Internal .ambilDIFFTreeNodes( Me .Input)

  End Sub Public Sub KompresiDiff()

  Me .Input = Input Me .Output = Output

  Private TreeNodes() As Internal . DIFFTreeNode Public Sub New ( ByVal Input As String , ByVal Output As String )

  

IO. BufferedStream

  Private bsOutput As

  

IO. BufferedStream

  Private bsInput As

  IO. FileStream

  Private fsOutput As

  IO. FileStream

  End Get End Property Private Input As String Private Output As String Private fsInput As

  End If Return lngLength

  Dim fileInfo As New

  #End Region End Namespace

  Get Static lngLength As Long = -1 If lngLength = -1 Then

  End Get End Property Public ReadOnly Property Length() As Long

  End If Return lngValue

  Catch ex As Exception End Try

  lngValue = Me .fsInput.Position

  Try

  Get Dim lngValue As Long If Not ( Me .fsInput Is Nothing ) Then

  ByVal objB As Object ) As Boolean End Function Public ReadOnly Property Value() As Long

  As Object ) As Boolean End Function Private Overloads Function ReferenceEquals( ByVal objA As Object , _

  _

  Public Class Compressor Private Overloads Function Equals( ByVal objA As Object , ByVal objB

  Namespace Diff #Region " CLASS : Compressor "

  #End Region End Namespace _{6. ModDifference} Namespace DIFF #Region " NAMESPACE : DIFF "

  Diff. Internal .GetDIFFTree( Me .TreeNodes)

  Me .fsInput = New

  IO. FileStream ( Me .Input, IO. FileMode .Open)

  Me .fsOutput = New

  IO. FileStream ( Me .Output, IO. FileMode .Create)

  Me .bsInput = New

  IO. BufferedStream ( Me .fsInput, _ Diff. Internal .pjgBuffer)

  Me .bsOutput = New

  IO. BufferedStream ( Me .fsOutput, _ Diff. Internal .pjgBuffer)

  Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim readByte As Integer Dim readBit1 As Integer Dim readBit2 As Integer Dim DiffReadBit As Integer Dim IntPosisi As Integer Dim KodingByte As String Dim KodingAllByte As String Do Until readByte = -1

  IntPosisi = IntPosisi + 1 readByte = Me .bsInput.ReadByte readBit1 = Left(readByte, 1) readBit2 = Mid(readByte, IntPosisi, 1) DiffReadBit = readBit2 - readBit1 KodingByte = readBit1 & DiffReadBit

  Loop

  KodingAllByte = KodingAllByte & KodingByte

  End Sub Public Sub DeKompresiDiff()

  Me .TreeNodes = Diff. Internal .ambilDIFFTreeNodes( Me .Input)

  Diff. Internal .GetDIFFTree( Me .TreeNodes)

  Me .fsInput = New

  IO. FileStream ( Me .Input, IO. FileMode .Open)

  Me .fsOutput = New

  IO. FileStream ( Me .Output, IO. FileMode .Create)

  Me .bsInput = New

  IO. BufferedStream ( Me .fsInput, _ Diff. Internal .pjgBuffer)

  Me .bsOutput = New

  IO. BufferedStream ( Me .fsOutput, _ Diff. Internal .pjgBuffer)

  Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim readByte As Integer Dim readBit1 As Integer Dim readBit2 As Integer Dim DiffReadBit As Integer Dim IntPosisi As Integer Dim DeKodingByte As String Dim DeKodingAllByte As String Do Until readByte = -1

  IntPosisi = IntPosisi + 1 readByte = Me .bsInput.ReadByte readBit1 = Left(readByte, 1) readBit2 = Mid(readByte, IntPosisi, 1) DiffReadBit = readBit2 + readBit1 DeKodingByte = DiffReadBit

  Loop

  DeKodingAllByte = DeKodingAllByte & DeKodingByte

  End Sub Public Sub Kompresi()

  Me .TreeNodes = Diff. Internal .ambilDIFFTreeNodes( Me .Input)

  Diff. Internal .GetDIFFTree( Me .TreeNodes)

  Me .fsInput = New

  IO. FileStream ( Me .Input, IO. FileMode .Open)

  Me .fsOutput = New

  IO. FileStream ( Me .Output, IO. FileMode .Create) Me .bsInput = New

  IO. BufferedStream ( Me .fsInput, _ Diff. Internal .pjgBuffer)

  Me .bsOutput = New

  IO. BufferedStream ( Me .fsOutput, _ Diff. Internal .pjgBuffer)

  Dim strXML As String =

  Diff. Internal .NodesToString( Me .TreeNodes)

  Dim bytXML() As Byte =

  System.Text. Encoding .Default.GetBytes(strXML)

  Dim xmlLength As String = bytXML.Length.ToString Do Until xmlLength.Length = 10 : xmlLength = " " & xmlLength :

  Loop Dim bytXmlLength() As Byte = _

  System.Text. Encoding .Default.GetBytes(xmlLength)

  Me .bsOutput.Write(bytXmlLength, 0, bytXmlLength.Length) Me .bsOutput.Position += 10 Me .bsOutput.Write(bytXML, 0, bytXML.Length) Dim binaryDecimalConverter As New

  Internal . BinaryDecimalConverter

  Dim strBinary As String Dim readByte As Integer Do Until readByte = -1

  readByte = Me .bsInput.ReadByte