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Yaz0 compression, (de)comp files from tool menu

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This commit is contained in:
Gericom 2014-12-29 12:33:18 +01:00
parent 05856d5b60
commit 6a21540a4a
2 changed files with 109 additions and 22 deletions
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56
CommonCompressors/YAZ0.cs
View File

@ -3,23 +3,30 @@ using System.Collections.Generic;
using System.Linq;
using System.Text;
using LibEveryFileExplorer.Compression;
using System.Runtime.InteropServices;
namespace CommonCompressors
{
public unsafe class YAZ0 : CompressionFormat<YAZ0.YAZ0Identifier>
public unsafe class YAZ0 : CompressionFormat<YAZ0.YAZ0Identifier>, ICompressable
{
/*public unsafe byte[] Compress(byte[] Data)
//Compression could be optimized by using look-ahead.
public unsafe byte[] Compress(byte[] Data)
{
byte* dataptr = (byte*)Marshal.UnsafeAddrOfPinnedArrayElement(Data, 0);
byte[] result = new byte[Data.Length + Data.Length / 8 + 4];
byte[] result = new byte[Data.Length + Data.Length / 8 + 0x10];
byte* resultptr = (byte*)Marshal.UnsafeAddrOfPinnedArrayElement(result, 0);
*resultptr++ = 0x10;
*resultptr++ = (byte)(Data.Length & 0xFF);
*resultptr++ = (byte)((Data.Length >> 8) & 0xFF);
*resultptr++ = (byte)'Y';
*resultptr++ = (byte)'a';
*resultptr++ = (byte)'z';
*resultptr++ = (byte)'0';
*resultptr++ = (byte)((Data.Length >> 24) & 0xFF);
*resultptr++ = (byte)((Data.Length >> 16) & 0xFF);
*resultptr++ = (byte)((Data.Length >> 8) & 0xFF);
*resultptr++ = (byte)((Data.Length >> 0) & 0xFF);
for (int i = 0; i < 8; i++) *resultptr++ = 0;
int length = Data.Length;
int dstoffs = 4;
int dstoffs = 16;
int Offs = 0;
while (true)
{
@ -33,9 +40,10 @@ namespace CommonCompressors
int nr = 2;
{
byte* ptr = dataptr - 1;
int maxnum = 18;
int maxnum = 0x111;
if (length - Offs < maxnum) maxnum = length - Offs;
int maxback = 0x1000;
//Use a smaller amount of bytes back to decrease time
int maxback = 0x400;//0x1000;
if (Offs < maxback) maxback = Offs;
maxback = (int)dataptr - maxback;
int tmpnr;
@ -47,6 +55,12 @@ namespace CommonCompressors
while (tmpnr < maxnum && ptr[tmpnr] == dataptr[tmpnr]) tmpnr++;
if (tmpnr > nr)
{
if (Offs + tmpnr > length)
{
nr = length - Offs;
back = (int)(dataptr - ptr);
break;
}
nr = tmpnr;
back = (int)(dataptr - ptr);
if (nr == maxnum) break;
@ -59,9 +73,19 @@ namespace CommonCompressors
{
Offs += nr;
dataptr += nr;
*resultptr++ = (byte)((((back - 1) >> 8) & 0xF) | (((nr - 3) & 0xF) << 4));
*resultptr++ = (byte)((back - 1) & 0xFF);
dstoffs += 2;
if (nr >= 0x12)
{
*resultptr++ = (byte)(((back - 1) >> 8) & 0xF);
*resultptr++ = (byte)((back - 1) & 0xFF);
*resultptr++ = (byte)((nr - 0x12) & 0xFF);
dstoffs += 3;
}
else
{
*resultptr++ = (byte)((((back - 1) >> 8) & 0xF) | (((nr - 2) & 0xF) << 4));
*resultptr++ = (byte)((back - 1) & 0xFF);
dstoffs += 2;
}
comp = 1;
}
else
@ -70,21 +94,21 @@ namespace CommonCompressors
dstoffs++;
Offs++;
}
header = (byte)((header << 1) | (comp & 1));
if (Offs == length)
header = (byte)((header << 1) | ((comp == 1) ? 0 : 1));
if (Offs >= length)
{
header = (byte)(header << (7 - i));
break;
}
}
result[headeroffs] = header;
if (Offs == length) break;
if (Offs >= length) break;
}
while ((dstoffs % 4) != 0) dstoffs++;
byte[] realresult = new byte[dstoffs];
Array.Copy(result, realresult, dstoffs);
return realresult;
}*/
}
public override byte[] Decompress(byte[] Data)
{

75
EveryFileExplorer/Form1.cs
View File

@ -116,10 +116,15 @@ namespace EveryFileExplorer
foreach (Type t in p.CompressionTypes)
{
MenuItem ii = m.MenuItems.Add(((dynamic)new StaticDynamic(t)).Identifier.GetCompressionDescription());
ii.MenuItems.Add("Decompress...");
if (t.GetInterfaces().Contains(typeof(ICompressable))) ii.MenuItems.Add("Compress...");
//ii.Click += new EventHandler(CreateFileNew_Click);
//ii.Tag = t;
var dec = ii.MenuItems.Add("Decompress...");
dec.Click += new EventHandler(Decompress_Click);
dec.Tag = t;
if (t.GetInterfaces().Contains(typeof(ICompressable)))
{
var comp = ii.MenuItems.Add("Compress...");
comp.Click += new EventHandler(Compress_Click);
comp.Tag = t;
}
}
}
}
@ -127,6 +132,64 @@ namespace EveryFileExplorer
PendingPath = null;
}
void Compress_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "All Files (*.*)|*.*";
if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK
&& openFileDialog1.FileName.Length > 0)
{
saveFileDialog1.Filter = "All Files (*.*)|*.*";
saveFileDialog1.FileName = Path.GetFileNameWithoutExtension(openFileDialog1.FileName) + "_comp" + Path.GetExtension(openFileDialog1.FileName);
if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK
&& saveFileDialog1.FileName.Length > 0)
{
Type comp = (Type)((MenuItem)sender).Tag;
ICompressable c = (ICompressable)comp.InvokeMember("", BindingFlags.CreateInstance, null, null, new object[0]);
byte[] result = null;
try
{
result = c.Compress(File.ReadAllBytes(openFileDialog1.FileName));
}
catch (Exception ee)
{
MessageBox.Show("An error occured while trying to compress:\n" + ee);
return;
}
File.Create(saveFileDialog1.FileName).Close();
File.WriteAllBytes(saveFileDialog1.FileName, result);
}
}
}
void Decompress_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "All Files (*.*)|*.*";
if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK
&& openFileDialog1.FileName.Length > 0)
{
Type comp = (Type)((MenuItem)sender).Tag;
CompressionFormatBase c = (CompressionFormatBase)comp.InvokeMember("", BindingFlags.CreateInstance, null, null, new object[0]);
byte[] result = null;
try
{
result = c.Decompress(File.ReadAllBytes(openFileDialog1.FileName));
}
catch (Exception ee)
{
MessageBox.Show("An error occured while trying to decompress! The file might not be in this compression type or not compressed at all!");
return;
}
saveFileDialog1.Filter = "All Files (*.*)|*.*";
saveFileDialog1.FileName = Path.GetFileNameWithoutExtension(openFileDialog1.FileName) + "_dec" + Path.GetExtension(openFileDialog1.FileName);
if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK
&& saveFileDialog1.FileName.Length > 0)
{
File.Create(saveFileDialog1.FileName).Close();
File.WriteAllBytes(saveFileDialog1.FileName, result);
}
}
}
void CreateNewProject_Click(object sender, EventArgs e)
{
ProjectBase p = (ProjectBase)((Type)((MenuItem)sender).Tag).InvokeMember("", BindingFlags.CreateInstance, null, null, new object[0]);
@ -274,9 +337,9 @@ namespace EveryFileExplorer
file.File.Data = data;
file.File.Save();
}
catch
catch (Exception ee)
{
MessageBox.Show("An error occurred while trying to save!");
MessageBox.Show("An error occurred while trying to save:\n" + ee);
}
}