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Form1.cs
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Form1.cs
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using System.Text;
namespace IcaZip
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void makeFirstMove_Click(object sender, EventArgs e)
{
CountChars();
}
Dictionary<char, int> originalCount;
private void CountChars()
{
char[] origText = original.Text.ToCharArray();
originalCount = new Dictionary<char, int>();
for (int c = 0; c != origText.Length; c++)
{
if (!originalCount.ContainsKey(origText[c]))
{
originalCount.Add(origText[c], 1);
}
else
{
originalCount[origText[c]]++;
}
}
var sortedDict = from entry in originalCount orderby entry.Value ascending select entry;
foreach (KeyValuePair<char, int> kvp in sortedDict)
{
charList.Items.Add(kvp.Key);
countList.Items.Add(kvp.Value);
}
}
private void button1_Click(object sender, EventArgs e)
{
CountChars();
while (charList.Items.Count > 1)
{
GroupByLowest();
}
recurseTree();
compressOriginalText();
}
private void compressOriginalText()
{
char[] origText = original.Text.ToCharArray();
StringBuilder sb = new StringBuilder();
for (int c = 0; c != origText.Length; c++)
{
sb.Append(compTree[origText[c]]);
}
while (sb.Length% 8 != 0)
{
sb.Append('0');
}
string input = sb.ToString();
int numOfBytes = input.Length / 8;
byte[] bytes = new byte[numOfBytes];
for (int i = 0; i < numOfBytes; ++i)
{
bytes[i] = Convert.ToByte(input.Substring(8 * i, 8), 2);
}
List<byte> file = new List<byte>();
//Add the number of chars counted
file.AddRange(BitConverter.GetBytes(originalCount.Count));
//add the char then the count
foreach (KeyValuePair<char,int> kvp in originalCount){
file.Add((byte)kvp.Key);
file.AddRange(BitConverter.GetBytes(kvp.Value));
}
//add the original text size
int size = origText.Length;
file.AddRange(BitConverter.GetBytes(size));
//add the compressed data
file.AddRange(bytes);
compress.Text = Convert.ToBase64String(bytes);
tempBinary.Text=sb.ToString();
}
int newNodesCount;
private void GroupLowest_Click(object sender, EventArgs e)
{
GroupByLowest();
}
private void GroupByLowest()
{
if (countList.Items.Count > 1)
{
newNodesCount++;
string newName = "L" + newNodesCount;
int newCount = (int)countList.Items[0] + (int)countList.Items[1];
tv.Nodes.Add(newName);
int lastnode = tv.Nodes.Count - 1;
if (charList.Items[0].ToString().Length > 1)
{
int index = -1;
for (int c = 0; c != tv.Nodes.Count; c++)
{
Console.WriteLine("Available NOdes:" + tv.Nodes[c]);
if (tv.Nodes[c].Text == charList.Items[0].ToString())
{
index = c;
}
}
tv.Nodes[lastnode].Nodes.Insert(0, (TreeNode)tv.Nodes[index].Clone());
tv.Nodes.RemoveAt(index);
lastnode--;
}
else
{
tv.Nodes[lastnode].Nodes.Add(charList.Items[0].ToString());
}
if (charList.Items[1].ToString().Length > 1)
{
int index = -1;
for (int c = 0; c != tv.Nodes.Count; c++)
{
Console.WriteLine("Available NOdes:" + tv.Nodes[c]);
if (tv.Nodes[c].Text == charList.Items[1].ToString())
{
index = c;
}
}
tv.Nodes[lastnode].Nodes.Insert(1, (TreeNode)tv.Nodes[index].Clone());
tv.Nodes.RemoveAt(index);
lastnode--;
}
else
{
tv.Nodes[lastnode].Nodes.Add(charList.Items[1].ToString());
}
charList.Items.RemoveAt(0);
charList.Items.RemoveAt(0);
countList.Items.RemoveAt(0);
countList.Items.RemoveAt(0);
int indexToInsert = countList.Items.Count;
for (int c = 0; c != countList.Items.Count; c++)
{
if (newCount > (int)countList.Items[c])
{
indexToInsert = c + 1;
}
}
countList.Items.Insert(indexToInsert, newCount);
charList.Items.Insert(indexToInsert, newName);
}
}
private void transverseTree_Click(object sender, EventArgs e)
{
recurseTree();
}
Dictionary<char, string> compTree;
private void recurseTree()
{
string vals = getValuesOfTree(tv.Nodes[0]);
string[] valsReal = vals.Split('|');
compTree = new Dictionary<char, string>();
for (int c = 0; c != valsReal.Length; c++)
{
if (valsReal[c].Length > 0)
{
if (c % 2 == 0)
{
dictValue.Items.Add(valsReal[c]);
}
else
{
dict.Items.Add(valsReal[c]);
compTree.Add(valsReal[c].ToCharArray()[0], valsReal[c-1]);
}
}
}
}
private string getValuesOfTree(TreeNode currentNode, string currentPath="")
{
if(currentNode.Nodes.Count> 0)
{
return getValuesOfTree(currentNode.Nodes[0], currentPath+"0") + getValuesOfTree(currentNode.Nodes[1], currentPath+"1");
}
else
{
return currentPath+"|" +currentNode.Text+"|";
}
}
private void CharCounter_Tick(object sender, EventArgs e)
{
label1.Text = "Original (" + (original.Text.Length)+" bytes)";
if (compress.Text.Length > 0)
{
try
{
label2.Text = "Compressed (" + Convert.FromBase64String(compress.Text).Length + " bytes)";
}catch(Exception E)
{
label2.Text = "Compressed";
}
}
else
{
label2.Text = "Compressed";
}
}
private void dict_SelectedIndexChanged(object sender, EventArgs e)
{
dictValue.SelectedIndex = dict.SelectedIndex;
}
}
}