Implementasi Dan Analisis Algoritma Dynamic Markov Compression (DMC) Pada File Text
64
LISTING PROGRAM
Kode Program Form Utama
Imports Microsoft.Office.Interop.Word
Imports System.IO
Imports System.Diagnostics
Imports VB = Microsoft.VisualBasic
Imports System.Xml
Imports Ionic.Zip
Imports System.Reflection
Public Class frmMain
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnCom.Click
Dim i As Integer
Dim ln As Integer
Dim sw As Stopwatch
sw = Stopwatch.StartNew()
intext = System.Text.Encoding.Default.GetBytes(txtInput.Text)
Call Kompresi(intext)
txtOutput.Text = ""
ln = UBound(outtext)
If ln < MAX_LENGTH Then
For i = 0 To ln
txtOutput.Text = txtOutput.Text & Chr(outtext(i))
Next
Else
txtOutput.Text = "Isi file tidak muat pada text area"
End If
sw.Stop()
txtBFakhir.Text = "0"
txtPKakhir.Text = txtOutput.Text.Length
txtWaktu.Text = sw.ElapsedMilliseconds.ToString()
btnSave.Enabled = True
dlgSave.Filter = "DMC File (*.dmc)|*.dmc"
MsgBox("Kompresi selesai!!")
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnDecom.Click
Dim i As Integer
Dim ln As Integer
Dim sw As Stopwatch
sw = Stopwatch.StartNew()
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intext = System.Text.Encoding.Default.GetBytes(txtInput.Text)
Call Dekompresi(intext)
txtOutput.Text = ""
ln = UBound(outtext)
If ln < MAX_LENGTH Then
For i = 0 To ln
txtOutput.Text = txtOutput.Text & Chr(outtext(i))
Next
Else
txtOutput.Text = "Isi file tidak muat pada text area"
End If
sw.Stop()
txtBFakhir.Text = "0"
txtPKakhir.Text = txtOutput.Text.Length
txtWaktu.Text = sw.ElapsedMilliseconds.ToString()
btnSave.Enabled = True
dlgSave.Filter = " DOCX File (*.docx)|*.docx|ODT File (*.odt)|*.odt"
MsgBox("Dekompresi selesai!!")
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnOpen.Click
Dim strfilename As String
dlgOpen.Filter = "DOCX File (*.docx)|*.docx|ODT File (*.odt)|*.odt|DMC File
(*.dmc)|*.dmc"
Dim dr As Integer = dlgOpen.ShowDialog()
strfilename = dlgOpen.FileName
If dr = DialogResult.OK Then
txtInput.Text = ""
Dim formatfile As String = Path.GetExtension(strfilename).ToLower()
If formatfile = ".txt" Then
Dim fs As FileStream
fs = New FileStream(strfilename, FileMode.Open, FileAccess.Read)
Dim sr As StreamReader
sr = New StreamReader(fs)
sr.BaseStream.Seek(0, SeekOrigin.Begin)
While sr.Peek() > -1
txtInput.Text = txtInput.Text & sr.ReadLine()
End While
sr.Close()
btnDecom.Enabled = False
btnCom.Enabled = True
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ElseIf formatfile = ".odt" Then
Dim odsZipFile As ZipFile = ZipFile.Read(strfilename)
Dim contentZipEntry As ZipEntry = odsZipFile("content.xml")
Dim contentStream As Stream = New MemoryStream()
contentZipEntry.Extract(contentStream)
contentStream.Seek(0, SeekOrigin.Begin)
Dim contentXml As XmlDocument = New XmlDocument()
contentXml.Load(contentStream)
Dim xmlnode As XmlNodeList
Dim i As Integer
xmlnode = contentXml.GetElementsByTagName("text:p")
For i = 0 To xmlnode.Count - 1
If i > 0 Then
txtInput.Text = txtInput.Text & " "
End If
txtInput.Text = txtInput.Text & xmlnode(i).ChildNodes.Item(0).InnerText
Next
contentStream.Close()
btnDecom.Enabled = False
btnCom.Enabled = True
ElseIf formatfile = ".doc" Or formatfile = ".docx" Then
Dim wordapp As Microsoft.Office.Interop.Word.Application = New
Application()
Dim miss As Object = System.Reflection.Missing.Value
Dim path As Object = strfilename
Dim readon As Object = True
Dim docs As Document
docs = wordapp.Documents.Open(path, miss, readon, miss, miss, miss, miss,
miss, miss, miss, miss, miss, miss, miss, miss, miss)
Dim i As Integer
Dim totaltext As String
totaltext = ""
For i = 0 To docs.Paragraphs.Count - 1
totaltext += docs.Paragraphs(i + 1).Range.Text.ToString().Trim()
Next
wordapp.Quit()
txtInput.Text = totaltext
btnDecom.Enabled = False
btnCom.Enabled = True
ElseIf formatfile = ".dmc" Then
Dim num As Short
Dim i As Integer
Dim fileLength As Integer
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num = FreeFile()
FileOpen(num, strfilename, OpenMode.Binary)
fileLength = LOF(num) - 1
ReDim intext(fileLength)
FileGet(num, intext)
FileClose(num)
If fileLength < MAX_LENGTH Then
For i = 0 To fileLength
txtInput.Text = txtInput.Text & Chr(intext(i))
Next
End If
btnDecom.Enabled = True
btnCom.Enabled = False
End If
Dim info As New FileInfo(strfilename)
txtPKawal.Text = txtInput.Text.Length
txtBFawal.Text = info.Length
btnSave.Enabled = False
End If
End Sub
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnSave.Click
Dim strfilename As String
Dim content As String
Dim ln As Integer
Dim dr As Integer = dlgSave.ShowDialog()
strfilename = dlgSave.FileName
content = ""
If dr = DialogResult.OK Then
Dim formatfile As String = Path.GetExtension(strfilename).ToLower()
If formatfile = ".dmc" Then
ln = UBound(outtext)
For i = 0 To ln
content = content & Chr(outtext(i))
Next
FileOpen(1, strfilename, OpenMode.Output)
For i = 1 To 1
Print(1, content)
Next
FileClose(1)
ElseIf formatfile = ".txt" Then
File.WriteAllText(strfilename, txtOutput.Text)
ElseIf formatfile = ".doc" Or formatfile = ".docx" Then
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Dim wordapp = New Application
Dim oDoc = wordapp.Documents.Add
Dim par1 = oDoc.Content.Paragraphs.Add
par1.Range.Text = txtOutput.Text
oDoc.SaveAs(strfilename)
oDoc.Close()
wordapp.Quit()
ElseIf formatfile = ".odt" Then
Dim templateFile As ZipFile = ZipFile.Read("template.odt")
Dim contentZipEntry As ZipEntry = templateFile("content.xml")
Dim contentStream As Stream = New MemoryStream()
contentZipEntry.Extract(contentStream)
contentStream.Seek(0, SeekOrigin.Begin)
Dim contentXml As XmlDocument = New XmlDocument()
contentXml.Load(contentStream)
contentXml.PreserveWhitespace = True
Dim xmlnode As XmlNodeList
xmlnode = contentXml.GetElementsByTagName("text:p")
xmlnode(0).ChildNodes.Item(0).InnerText = txtOutput.Text
templateFile.RemoveEntry("content.xml")
Dim memStream As MemoryStream = New MemoryStream()
contentXml.Save(memStream)
memStream.Seek(0, SeekOrigin.Begin)
templateFile.AddEntry("content.xml", memStream)
templateFile.Save(strfilename)
contentStream.Close()
memStream.Close()
End If
Dim info As New FileInfo(strfilename)
txtBFakhir.Text = info.Length
txtRasio.Text = Math.Round((Val(txtBFawal.Text) / Val(txtBFakhir.Text)) * 100, 2)
MsgBox("Simpan file selesai!!")
End If
End Sub
Private Sub btnReset_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnReset.Click
btnDecom.Enabled = False
btnCom.Enabled = False
txtInput.Text = ""
txtOutput.Text = ""
btnSave.Enabled = False
txtBFakhir.Text = "0"
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txtBFawal.Text = "0"
txtPKakhir.Text = "0"
txtPKawal.Text = "0"
txtRasio.Text = "0"
txtWaktu.Text = "0"
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
btnDecom.Enabled = False
btnCom.Enabled = False
txtInput.Text = ""
txtOutput.Text = ""
btnSave.Enabled = False
txtBFakhir.Text = "0"
txtBFawal.Text = "0"
txtPKakhir.Text = "0"
txtPKawal.Text = "0"
txtRasio.Text = "0"
txtWaktu.Text = "0"
End Sub
Private Sub TentangToolStripMenuItem_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles TentangToolStripMenuItem.Click
frmTentang.ShowDialog()
End Sub
Private Sub ExitToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ExitToolStripMenuItem.Click
Me.Close()
End Sub
End Sub
Private Sub frmMain_FormClosing(sender As Object, e As FormClosingEventArgs)
Handles MyBase.FormClosing
cover.Close()
End Sub
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As
System.EventArgs)
End Sub
Private Sub txtRasio_TextChanged(sender As Object, e As EventArgs) Handles
txtRasio.TextChanged
End Sub
End Class
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Kode Program Class Algoritma DMC
Module mainmod
Public Const MAX_LENGTH As Integer = 30000
Public intext(), outtext(), OutByteBuf As Byte
Private OutPos, OutBitCount As Integer
Private Const MaxBits As Integer = 24
Public Sub Kompresi(ByRef listarr() As Byte)
Dim InpPos, MinValue, MaxValue, RangValue, MidValue, Index, TopBit,
One(256), Zero(256), i As Integer
Dim mChar, Bitset As Byte
ReDim outtext(500)
OutPos = OutBitCount = OutByteBuf = MinValue = InpPos = 0
MaxValue = (2 ^ MaxBits) - 1
TopBit = 2 ^ (MaxBits - 1)
Do While InpPos 0 Then
MinValue = MidValue
One(Index) = One(Index) + 1
Else
MaxValue = MidValue
Zero(Index) = Zero(Index) + 1
End If
Do While (MaxValue And TopBit) = (MinValue And TopBit) Or MinValue >
MaxValue - 255
If (MinValue And TopBit) = 0 Then
OutByteBuf = OutByteBuf * 2 + 0
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
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outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
Else
OutByteBuf = OutByteBuf * 2 + 1
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
End If
MaxValue = (MaxValue And (TopBit - 1)) * 2 + 1
MinValue = (MinValue And (TopBit - 1)) * 2
If MinValue >= MaxValue Then
MaxValue = (2 ^ MaxBits) - 1
End If
Loop
Next
Loop
For i = MaxBits - 1 To 0 Step -1
If (MinValue And 2 ^ i) = 0 Then
OutByteBuf = OutByteBuf * 2 + 0
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
Else
OutByteBuf = OutByteBuf * 2 + 1
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
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outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
Next
Do While OutBitCount > 0
OutByteBuf = OutByteBuf * 2 + 1
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
Public Sub Dekompresi(ByRef listarr() As Byte)
Dim InpPos As Integer
Dim InBitPos As Integer
Dim MinValue As Integer
Dim MaxValue As Integer
Dim RangValue As Integer
Dim MidValue As Integer
Dim Value As Integer
Dim mChar As Byte
Dim i As Integer
Dim Index As Integer
Dim EOF_State As Boolean
Dim TopBit As Integer
Dim One(256) As Integer
Dim Zero(256) As Integer
ReDim outtext(500)
OutPos = 0
OutBitCount = 0
OutByteBuf = 0
MinValue = 0
MaxValue = (2 ^ MaxBits) - 1
TopBit = 2 ^ (MaxBits - 1)
InpPos = 0
Value = ReadBitsFromArray(listarr, InpPos, InBitPos, MaxBits)
Index = -1
For i = 0 To 256
One(i) = 1
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Zero(i) = 1
Next
Do
mChar = 0
For i = 0 To 7
Index = (1 * (2 ^ i)) - 1 + mChar
RangValue = MaxValue - MinValue
MidValue = MinValue + RangValue * (Zero(Index) / (One(Index) +
Zero(Index)))
If MidValue = MinValue Then MidValue = MidValue + 1
If MidValue = MaxValue - 1 Then MidValue = MidValue - 1
If Value >= MidValue Then
mChar = (2 * mChar) + 1
MinValue = MidValue
One(Index) = One(Index) + 1
Else
mChar = 2 * mChar
MaxValue = MidValue
Zero(Index) = Zero(Index) + 1
End If
Do While (MaxValue And TopBit) = (MinValue And TopBit) Or MinValue >
MaxValue - 255
If InpPos = MaxValue Then MaxValue = (2 ^ MaxBits) - 1
Else
EOF_State = True
Exit Do
End If
Call AddmCharToArray(outtext, OutPos, mChar)
Loop
ReDim Preserve outtext(OutPos - 1)
End Sub
Private Sub AddBitsToouttext(ByRef Number As Integer)
OutByteBuf = OutByteBuf * 2 + Number
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
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If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
End Sub
Private Function ReadBitsFromArray(ByRef FromArray() As Byte, ByRef FromPos As
Integer, ByRef FromBit As Integer, ByRef NumBits As Integer) As Integer
Dim i As Integer
Dim Temp As Integer
For i = 1 To NumBits
Temp = Temp * 2 + (-1 * ((FromArray(FromPos) And 2 ^ (7 - FromBit)) > 0))
FromBit = FromBit + 1
If FromBit = 8 Then
If FromPos + 1 > UBound(FromArray) Then
Do While i < NumBits
Temp = Temp * 2
i=i+1
Loop
FromPos = FromPos + 1
Exit For
End If
FromPos = FromPos + 1
FromBit = 0
End If
Next
ReadBitsFromArray = Temp
End Function
Private Sub AddmCharToArray(ByRef ToArray() As Byte, ByRef ToPos As Integer,
ByRef mChar As Byte)
If ToPos > UBound(ToArray) Then ReDim Preserve ToArray(ToPos + 500)
ToArray(ToPos) = mChar
ToPos = ToPos + 1
End Sub
End Module
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CURRICULUM VITAE
Nama
: Fiktaruddin
Tempat/Tanggal Lahir : Medan, 15 Maret 1991
Agama
: Islam
Alamat Sekarang
: Jl. Rajawali No.23F Medan Sunggal
Alamat Orang Tua
: Jl. Medan-B.Aceh, Simp.Mulieng Aceh Utara
Telp/ Hp
: 081376278380
Email
: [email protected]
Riwayat Pendidikan
2006 – 2009
: SMA Al-Azhar Medan
2003 – 2006
: SMP Negeri 1 Simp.Mulieng, Syamtalira Aron
1997 – 2003
: SD Negeri 1 Simp.Mulieng, Syamtalira Aron
Pengalaman Organisasi dan Kegiatan Ilmiah
Anggota di bagian Biro Kesekretariatan Ikatan Mahasiswa S1 Ilmu Komputer
(IMILKOM), 2010-2012
Praktek Kerja Lapangan di Bank Sumut Cabang Pembantu Setia Budi Medan, JuliAgustus 2012
Universitas Sumatera Utara
LISTING PROGRAM
Kode Program Form Utama
Imports Microsoft.Office.Interop.Word
Imports System.IO
Imports System.Diagnostics
Imports VB = Microsoft.VisualBasic
Imports System.Xml
Imports Ionic.Zip
Imports System.Reflection
Public Class frmMain
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnCom.Click
Dim i As Integer
Dim ln As Integer
Dim sw As Stopwatch
sw = Stopwatch.StartNew()
intext = System.Text.Encoding.Default.GetBytes(txtInput.Text)
Call Kompresi(intext)
txtOutput.Text = ""
ln = UBound(outtext)
If ln < MAX_LENGTH Then
For i = 0 To ln
txtOutput.Text = txtOutput.Text & Chr(outtext(i))
Next
Else
txtOutput.Text = "Isi file tidak muat pada text area"
End If
sw.Stop()
txtBFakhir.Text = "0"
txtPKakhir.Text = txtOutput.Text.Length
txtWaktu.Text = sw.ElapsedMilliseconds.ToString()
btnSave.Enabled = True
dlgSave.Filter = "DMC File (*.dmc)|*.dmc"
MsgBox("Kompresi selesai!!")
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnDecom.Click
Dim i As Integer
Dim ln As Integer
Dim sw As Stopwatch
sw = Stopwatch.StartNew()
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intext = System.Text.Encoding.Default.GetBytes(txtInput.Text)
Call Dekompresi(intext)
txtOutput.Text = ""
ln = UBound(outtext)
If ln < MAX_LENGTH Then
For i = 0 To ln
txtOutput.Text = txtOutput.Text & Chr(outtext(i))
Next
Else
txtOutput.Text = "Isi file tidak muat pada text area"
End If
sw.Stop()
txtBFakhir.Text = "0"
txtPKakhir.Text = txtOutput.Text.Length
txtWaktu.Text = sw.ElapsedMilliseconds.ToString()
btnSave.Enabled = True
dlgSave.Filter = " DOCX File (*.docx)|*.docx|ODT File (*.odt)|*.odt"
MsgBox("Dekompresi selesai!!")
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnOpen.Click
Dim strfilename As String
dlgOpen.Filter = "DOCX File (*.docx)|*.docx|ODT File (*.odt)|*.odt|DMC File
(*.dmc)|*.dmc"
Dim dr As Integer = dlgOpen.ShowDialog()
strfilename = dlgOpen.FileName
If dr = DialogResult.OK Then
txtInput.Text = ""
Dim formatfile As String = Path.GetExtension(strfilename).ToLower()
If formatfile = ".txt" Then
Dim fs As FileStream
fs = New FileStream(strfilename, FileMode.Open, FileAccess.Read)
Dim sr As StreamReader
sr = New StreamReader(fs)
sr.BaseStream.Seek(0, SeekOrigin.Begin)
While sr.Peek() > -1
txtInput.Text = txtInput.Text & sr.ReadLine()
End While
sr.Close()
btnDecom.Enabled = False
btnCom.Enabled = True
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ElseIf formatfile = ".odt" Then
Dim odsZipFile As ZipFile = ZipFile.Read(strfilename)
Dim contentZipEntry As ZipEntry = odsZipFile("content.xml")
Dim contentStream As Stream = New MemoryStream()
contentZipEntry.Extract(contentStream)
contentStream.Seek(0, SeekOrigin.Begin)
Dim contentXml As XmlDocument = New XmlDocument()
contentXml.Load(contentStream)
Dim xmlnode As XmlNodeList
Dim i As Integer
xmlnode = contentXml.GetElementsByTagName("text:p")
For i = 0 To xmlnode.Count - 1
If i > 0 Then
txtInput.Text = txtInput.Text & " "
End If
txtInput.Text = txtInput.Text & xmlnode(i).ChildNodes.Item(0).InnerText
Next
contentStream.Close()
btnDecom.Enabled = False
btnCom.Enabled = True
ElseIf formatfile = ".doc" Or formatfile = ".docx" Then
Dim wordapp As Microsoft.Office.Interop.Word.Application = New
Application()
Dim miss As Object = System.Reflection.Missing.Value
Dim path As Object = strfilename
Dim readon As Object = True
Dim docs As Document
docs = wordapp.Documents.Open(path, miss, readon, miss, miss, miss, miss,
miss, miss, miss, miss, miss, miss, miss, miss, miss)
Dim i As Integer
Dim totaltext As String
totaltext = ""
For i = 0 To docs.Paragraphs.Count - 1
totaltext += docs.Paragraphs(i + 1).Range.Text.ToString().Trim()
Next
wordapp.Quit()
txtInput.Text = totaltext
btnDecom.Enabled = False
btnCom.Enabled = True
ElseIf formatfile = ".dmc" Then
Dim num As Short
Dim i As Integer
Dim fileLength As Integer
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num = FreeFile()
FileOpen(num, strfilename, OpenMode.Binary)
fileLength = LOF(num) - 1
ReDim intext(fileLength)
FileGet(num, intext)
FileClose(num)
If fileLength < MAX_LENGTH Then
For i = 0 To fileLength
txtInput.Text = txtInput.Text & Chr(intext(i))
Next
End If
btnDecom.Enabled = True
btnCom.Enabled = False
End If
Dim info As New FileInfo(strfilename)
txtPKawal.Text = txtInput.Text.Length
txtBFawal.Text = info.Length
btnSave.Enabled = False
End If
End Sub
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnSave.Click
Dim strfilename As String
Dim content As String
Dim ln As Integer
Dim dr As Integer = dlgSave.ShowDialog()
strfilename = dlgSave.FileName
content = ""
If dr = DialogResult.OK Then
Dim formatfile As String = Path.GetExtension(strfilename).ToLower()
If formatfile = ".dmc" Then
ln = UBound(outtext)
For i = 0 To ln
content = content & Chr(outtext(i))
Next
FileOpen(1, strfilename, OpenMode.Output)
For i = 1 To 1
Print(1, content)
Next
FileClose(1)
ElseIf formatfile = ".txt" Then
File.WriteAllText(strfilename, txtOutput.Text)
ElseIf formatfile = ".doc" Or formatfile = ".docx" Then
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Dim wordapp = New Application
Dim oDoc = wordapp.Documents.Add
Dim par1 = oDoc.Content.Paragraphs.Add
par1.Range.Text = txtOutput.Text
oDoc.SaveAs(strfilename)
oDoc.Close()
wordapp.Quit()
ElseIf formatfile = ".odt" Then
Dim templateFile As ZipFile = ZipFile.Read("template.odt")
Dim contentZipEntry As ZipEntry = templateFile("content.xml")
Dim contentStream As Stream = New MemoryStream()
contentZipEntry.Extract(contentStream)
contentStream.Seek(0, SeekOrigin.Begin)
Dim contentXml As XmlDocument = New XmlDocument()
contentXml.Load(contentStream)
contentXml.PreserveWhitespace = True
Dim xmlnode As XmlNodeList
xmlnode = contentXml.GetElementsByTagName("text:p")
xmlnode(0).ChildNodes.Item(0).InnerText = txtOutput.Text
templateFile.RemoveEntry("content.xml")
Dim memStream As MemoryStream = New MemoryStream()
contentXml.Save(memStream)
memStream.Seek(0, SeekOrigin.Begin)
templateFile.AddEntry("content.xml", memStream)
templateFile.Save(strfilename)
contentStream.Close()
memStream.Close()
End If
Dim info As New FileInfo(strfilename)
txtBFakhir.Text = info.Length
txtRasio.Text = Math.Round((Val(txtBFawal.Text) / Val(txtBFakhir.Text)) * 100, 2)
MsgBox("Simpan file selesai!!")
End If
End Sub
Private Sub btnReset_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnReset.Click
btnDecom.Enabled = False
btnCom.Enabled = False
txtInput.Text = ""
txtOutput.Text = ""
btnSave.Enabled = False
txtBFakhir.Text = "0"
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txtBFawal.Text = "0"
txtPKakhir.Text = "0"
txtPKawal.Text = "0"
txtRasio.Text = "0"
txtWaktu.Text = "0"
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
btnDecom.Enabled = False
btnCom.Enabled = False
txtInput.Text = ""
txtOutput.Text = ""
btnSave.Enabled = False
txtBFakhir.Text = "0"
txtBFawal.Text = "0"
txtPKakhir.Text = "0"
txtPKawal.Text = "0"
txtRasio.Text = "0"
txtWaktu.Text = "0"
End Sub
Private Sub TentangToolStripMenuItem_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles TentangToolStripMenuItem.Click
frmTentang.ShowDialog()
End Sub
Private Sub ExitToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles ExitToolStripMenuItem.Click
Me.Close()
End Sub
End Sub
Private Sub frmMain_FormClosing(sender As Object, e As FormClosingEventArgs)
Handles MyBase.FormClosing
cover.Close()
End Sub
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As
System.EventArgs)
End Sub
Private Sub txtRasio_TextChanged(sender As Object, e As EventArgs) Handles
txtRasio.TextChanged
End Sub
End Class
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Kode Program Class Algoritma DMC
Module mainmod
Public Const MAX_LENGTH As Integer = 30000
Public intext(), outtext(), OutByteBuf As Byte
Private OutPos, OutBitCount As Integer
Private Const MaxBits As Integer = 24
Public Sub Kompresi(ByRef listarr() As Byte)
Dim InpPos, MinValue, MaxValue, RangValue, MidValue, Index, TopBit,
One(256), Zero(256), i As Integer
Dim mChar, Bitset As Byte
ReDim outtext(500)
OutPos = OutBitCount = OutByteBuf = MinValue = InpPos = 0
MaxValue = (2 ^ MaxBits) - 1
TopBit = 2 ^ (MaxBits - 1)
Do While InpPos 0 Then
MinValue = MidValue
One(Index) = One(Index) + 1
Else
MaxValue = MidValue
Zero(Index) = Zero(Index) + 1
End If
Do While (MaxValue And TopBit) = (MinValue And TopBit) Or MinValue >
MaxValue - 255
If (MinValue And TopBit) = 0 Then
OutByteBuf = OutByteBuf * 2 + 0
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
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outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
Else
OutByteBuf = OutByteBuf * 2 + 1
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
End If
MaxValue = (MaxValue And (TopBit - 1)) * 2 + 1
MinValue = (MinValue And (TopBit - 1)) * 2
If MinValue >= MaxValue Then
MaxValue = (2 ^ MaxBits) - 1
End If
Loop
Next
Loop
For i = MaxBits - 1 To 0 Step -1
If (MinValue And 2 ^ i) = 0 Then
OutByteBuf = OutByteBuf * 2 + 0
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
Else
OutByteBuf = OutByteBuf * 2 + 1
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
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outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
Next
Do While OutBitCount > 0
OutByteBuf = OutByteBuf * 2 + 1
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
Public Sub Dekompresi(ByRef listarr() As Byte)
Dim InpPos As Integer
Dim InBitPos As Integer
Dim MinValue As Integer
Dim MaxValue As Integer
Dim RangValue As Integer
Dim MidValue As Integer
Dim Value As Integer
Dim mChar As Byte
Dim i As Integer
Dim Index As Integer
Dim EOF_State As Boolean
Dim TopBit As Integer
Dim One(256) As Integer
Dim Zero(256) As Integer
ReDim outtext(500)
OutPos = 0
OutBitCount = 0
OutByteBuf = 0
MinValue = 0
MaxValue = (2 ^ MaxBits) - 1
TopBit = 2 ^ (MaxBits - 1)
InpPos = 0
Value = ReadBitsFromArray(listarr, InpPos, InBitPos, MaxBits)
Index = -1
For i = 0 To 256
One(i) = 1
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Zero(i) = 1
Next
Do
mChar = 0
For i = 0 To 7
Index = (1 * (2 ^ i)) - 1 + mChar
RangValue = MaxValue - MinValue
MidValue = MinValue + RangValue * (Zero(Index) / (One(Index) +
Zero(Index)))
If MidValue = MinValue Then MidValue = MidValue + 1
If MidValue = MaxValue - 1 Then MidValue = MidValue - 1
If Value >= MidValue Then
mChar = (2 * mChar) + 1
MinValue = MidValue
One(Index) = One(Index) + 1
Else
mChar = 2 * mChar
MaxValue = MidValue
Zero(Index) = Zero(Index) + 1
End If
Do While (MaxValue And TopBit) = (MinValue And TopBit) Or MinValue >
MaxValue - 255
If InpPos = MaxValue Then MaxValue = (2 ^ MaxBits) - 1
Else
EOF_State = True
Exit Do
End If
Call AddmCharToArray(outtext, OutPos, mChar)
Loop
ReDim Preserve outtext(OutPos - 1)
End Sub
Private Sub AddBitsToouttext(ByRef Number As Integer)
OutByteBuf = OutByteBuf * 2 + Number
OutBitCount = OutBitCount + 1
If OutBitCount = 8 Then
outtext(OutPos) = OutByteBuf
OutBitCount = 0
OutByteBuf = 0
OutPos = OutPos + 1
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If OutPos > UBound(outtext) Then
ReDim Preserve outtext(OutPos + 500)
End If
End If
End Sub
Private Function ReadBitsFromArray(ByRef FromArray() As Byte, ByRef FromPos As
Integer, ByRef FromBit As Integer, ByRef NumBits As Integer) As Integer
Dim i As Integer
Dim Temp As Integer
For i = 1 To NumBits
Temp = Temp * 2 + (-1 * ((FromArray(FromPos) And 2 ^ (7 - FromBit)) > 0))
FromBit = FromBit + 1
If FromBit = 8 Then
If FromPos + 1 > UBound(FromArray) Then
Do While i < NumBits
Temp = Temp * 2
i=i+1
Loop
FromPos = FromPos + 1
Exit For
End If
FromPos = FromPos + 1
FromBit = 0
End If
Next
ReadBitsFromArray = Temp
End Function
Private Sub AddmCharToArray(ByRef ToArray() As Byte, ByRef ToPos As Integer,
ByRef mChar As Byte)
If ToPos > UBound(ToArray) Then ReDim Preserve ToArray(ToPos + 500)
ToArray(ToPos) = mChar
ToPos = ToPos + 1
End Sub
End Module
Universitas Sumatera Utara
75
CURRICULUM VITAE
Nama
: Fiktaruddin
Tempat/Tanggal Lahir : Medan, 15 Maret 1991
Agama
: Islam
Alamat Sekarang
: Jl. Rajawali No.23F Medan Sunggal
Alamat Orang Tua
: Jl. Medan-B.Aceh, Simp.Mulieng Aceh Utara
Telp/ Hp
: 081376278380
: [email protected]
Riwayat Pendidikan
2006 – 2009
: SMA Al-Azhar Medan
2003 – 2006
: SMP Negeri 1 Simp.Mulieng, Syamtalira Aron
1997 – 2003
: SD Negeri 1 Simp.Mulieng, Syamtalira Aron
Pengalaman Organisasi dan Kegiatan Ilmiah
Anggota di bagian Biro Kesekretariatan Ikatan Mahasiswa S1 Ilmu Komputer
(IMILKOM), 2010-2012
Praktek Kerja Lapangan di Bank Sumut Cabang Pembantu Setia Budi Medan, JuliAgustus 2012
Universitas Sumatera Utara