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https://github.com/Prof9/LZOnDecompress.git
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.gitignore
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.gitignore
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## Ignore Visual Studio temporary files, build results, and
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# Visual Studio 2015/2017 cache/options directory
|
||||||
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|
||||||
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# Uncomment if you have tasks that create the project's static files in wwwroot
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||||||
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||||||
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|
||||||
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|
||||||
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|
||||||
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# MSTest test Results
|
||||||
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[Tt]est[Rr]esult*/
|
||||||
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[Bb]uild[Ll]og.*
|
||||||
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|
||||||
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# NUNIT
|
||||||
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*.VisualState.xml
|
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TestResult.xml
|
||||||
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|
||||||
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# Build Results of an ATL Project
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|
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|
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|
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|
||||||
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# Chutzpah Test files
|
||||||
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_Chutzpah*
|
||||||
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|
||||||
|
# Visual C++ cache files
|
||||||
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ipch/
|
||||||
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*.aps
|
||||||
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*.ncb
|
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|
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*.opensdf
|
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*.sdf
|
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|
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*.VC.db
|
||||||
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*.VC.VC.opendb
|
||||||
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||||||
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# Visual Studio profiler
|
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|
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|
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.axoCover/*
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# Visual Studio code coverage results
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*.coverage
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*.coveragexml
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# NCrunch
|
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_NCrunch_*
|
||||||
|
.*crunch*.local.xml
|
||||||
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nCrunchTemp_*
|
||||||
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|
||||||
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# MightyMoose
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|
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|
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|
||||||
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|
||||||
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# The packages folder can be ignored because of Package Restore
|
||||||
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**/[Pp]ackages/*
|
||||||
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# except build/, which is used as an MSBuild target.
|
||||||
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|
||||||
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# Uncomment if necessary however generally it will be regenerated when needed
|
||||||
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||||||
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||||||
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|
||||||
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|
||||||
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||||||
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# Microsoft Azure Build Output
|
||||||
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|
||||||
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*.build.csdef
|
||||||
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|
||||||
|
# Microsoft Azure Emulator
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# but keep track of directories ending in .cache
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# Others
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|
||||||
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*~
|
||||||
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|
||||||
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||||||
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|
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|
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|
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orleans.codegen.cs
|
||||||
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|
||||||
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# Including strong name files can present a security risk
|
||||||
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# (https://github.com/github/gitignore/pull/2483#issue-259490424)
|
||||||
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#*.snk
|
||||||
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|
||||||
|
# Since there are multiple workflows, uncomment next line to ignore bower_components
|
||||||
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# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
|
||||||
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#bower_components/
|
||||||
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|
||||||
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# RIA/Silverlight projects
|
||||||
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Generated_Code/
|
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||||||
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# Backup & report files from converting an old project file
|
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# because we have git ;-)
|
||||||
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|
||||||
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Backup*/
|
||||||
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|
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|
||||||
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ServiceFabricBackup/
|
||||||
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*.rptproj.bak
|
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|
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# SQL Server files
|
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*.mdf
|
||||||
|
*.ldf
|
||||||
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*.ndf
|
||||||
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|
||||||
|
# Business Intelligence projects
|
||||||
|
*.rdl.data
|
||||||
|
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|
||||||
|
*.bim_*.settings
|
||||||
|
*.rptproj.rsuser
|
||||||
|
|
||||||
|
# Microsoft Fakes
|
||||||
|
FakesAssemblies/
|
||||||
|
|
||||||
|
# GhostDoc plugin setting file
|
||||||
|
*.GhostDoc.xml
|
||||||
|
|
||||||
|
# Node.js Tools for Visual Studio
|
||||||
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.ntvs_analysis.dat
|
||||||
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node_modules/
|
||||||
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|
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# Visual Studio 6 build log
|
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*.plg
|
||||||
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|
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|
# Visual Studio 6 workspace options file
|
||||||
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*.opt
|
||||||
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|
||||||
|
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
|
||||||
|
*.vbw
|
||||||
|
|
||||||
|
# Visual Studio LightSwitch build output
|
||||||
|
**/*.HTMLClient/GeneratedArtifacts
|
||||||
|
**/*.DesktopClient/GeneratedArtifacts
|
||||||
|
**/*.DesktopClient/ModelManifest.xml
|
||||||
|
**/*.Server/GeneratedArtifacts
|
||||||
|
**/*.Server/ModelManifest.xml
|
||||||
|
_Pvt_Extensions
|
||||||
|
|
||||||
|
# Paket dependency manager
|
||||||
|
.paket/paket.exe
|
||||||
|
paket-files/
|
||||||
|
|
||||||
|
# FAKE - F# Make
|
||||||
|
.fake/
|
||||||
|
|
||||||
|
# JetBrains Rider
|
||||||
|
.idea/
|
||||||
|
*.sln.iml
|
||||||
|
|
||||||
|
# CodeRush
|
||||||
|
.cr/
|
||||||
|
|
||||||
|
# Python Tools for Visual Studio (PTVS)
|
||||||
|
__pycache__/
|
||||||
|
*.pyc
|
||||||
|
|
||||||
|
# Cake - Uncomment if you are using it
|
||||||
|
# tools/**
|
||||||
|
# !tools/packages.config
|
||||||
|
|
||||||
|
# Tabs Studio
|
||||||
|
*.tss
|
||||||
|
|
||||||
|
# Telerik's JustMock configuration file
|
||||||
|
*.jmconfig
|
||||||
|
|
||||||
|
# BizTalk build output
|
||||||
|
*.btp.cs
|
||||||
|
*.btm.cs
|
||||||
|
*.odx.cs
|
||||||
|
*.xsd.cs
|
||||||
|
|
||||||
|
# OpenCover UI analysis results
|
||||||
|
OpenCover/
|
||||||
|
|
||||||
|
# Azure Stream Analytics local run output
|
||||||
|
ASALocalRun/
|
||||||
|
|
||||||
|
# MSBuild Binary and Structured Log
|
||||||
|
*.binlog
|
||||||
|
|
||||||
|
# NVidia Nsight GPU debugger configuration file
|
||||||
|
*.nvuser
|
||||||
|
|
||||||
|
# MFractors (Xamarin productivity tool) working folder
|
||||||
|
.mfractor/
|
25
LZOnDecompress.sln
Normal file
25
LZOnDecompress.sln
Normal file
@ -0,0 +1,25 @@
|
|||||||
|
|
||||||
|
Microsoft Visual Studio Solution File, Format Version 12.00
|
||||||
|
# Visual Studio 15
|
||||||
|
VisualStudioVersion = 15.0.27703.2042
|
||||||
|
MinimumVisualStudioVersion = 10.0.40219.1
|
||||||
|
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LZOnDecompress", "LZOnDecompress\LZOnDecompress.csproj", "{DFF70B93-87D4-4BD7-BC96-3AF6D18D40AB}"
|
||||||
|
EndProject
|
||||||
|
Global
|
||||||
|
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||||
|
Debug|Any CPU = Debug|Any CPU
|
||||||
|
Release|Any CPU = Release|Any CPU
|
||||||
|
EndGlobalSection
|
||||||
|
GlobalSection(ProjectConfigurationPlatforms) = postSolution
|
||||||
|
{DFF70B93-87D4-4BD7-BC96-3AF6D18D40AB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||||
|
{DFF70B93-87D4-4BD7-BC96-3AF6D18D40AB}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||||
|
{DFF70B93-87D4-4BD7-BC96-3AF6D18D40AB}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||||
|
{DFF70B93-87D4-4BD7-BC96-3AF6D18D40AB}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||||
|
EndGlobalSection
|
||||||
|
GlobalSection(SolutionProperties) = preSolution
|
||||||
|
HideSolutionNode = FALSE
|
||||||
|
EndGlobalSection
|
||||||
|
GlobalSection(ExtensibilityGlobals) = postSolution
|
||||||
|
SolutionGuid = {47F5CDE0-BAAB-474B-9E2C-19E21DC1FDEC}
|
||||||
|
EndGlobalSection
|
||||||
|
EndGlobal
|
47
LZOnDecompress/LZOnDecompress.csproj
Normal file
47
LZOnDecompress/LZOnDecompress.csproj
Normal file
@ -0,0 +1,47 @@
|
|||||||
|
<?xml version="1.0" encoding="utf-8"?>
|
||||||
|
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
||||||
|
<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
|
||||||
|
<PropertyGroup>
|
||||||
|
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
|
||||||
|
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
|
||||||
|
<ProjectGuid>{DFF70B93-87D4-4BD7-BC96-3AF6D18D40AB}</ProjectGuid>
|
||||||
|
<OutputType>Exe</OutputType>
|
||||||
|
<RootNamespace>LZOnDecompress</RootNamespace>
|
||||||
|
<AssemblyName>LZOnDecompress</AssemblyName>
|
||||||
|
<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
|
||||||
|
<FileAlignment>512</FileAlignment>
|
||||||
|
</PropertyGroup>
|
||||||
|
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
|
||||||
|
<PlatformTarget>AnyCPU</PlatformTarget>
|
||||||
|
<DebugSymbols>true</DebugSymbols>
|
||||||
|
<DebugType>full</DebugType>
|
||||||
|
<Optimize>false</Optimize>
|
||||||
|
<OutputPath>bin\Debug\</OutputPath>
|
||||||
|
<DefineConstants>DEBUG;TRACE</DefineConstants>
|
||||||
|
<ErrorReport>prompt</ErrorReport>
|
||||||
|
<WarningLevel>4</WarningLevel>
|
||||||
|
</PropertyGroup>
|
||||||
|
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
|
||||||
|
<PlatformTarget>AnyCPU</PlatformTarget>
|
||||||
|
<DebugType>none</DebugType>
|
||||||
|
<Optimize>true</Optimize>
|
||||||
|
<OutputPath>bin\Release\</OutputPath>
|
||||||
|
<DefineConstants>TRACE</DefineConstants>
|
||||||
|
<ErrorReport>prompt</ErrorReport>
|
||||||
|
<WarningLevel>4</WarningLevel>
|
||||||
|
</PropertyGroup>
|
||||||
|
<ItemGroup>
|
||||||
|
<Reference Include="System" />
|
||||||
|
<Reference Include="System.Core" />
|
||||||
|
<Reference Include="System.Xml.Linq" />
|
||||||
|
<Reference Include="System.Data.DataSetExtensions" />
|
||||||
|
<Reference Include="Microsoft.CSharp" />
|
||||||
|
<Reference Include="System.Data" />
|
||||||
|
<Reference Include="System.Xml" />
|
||||||
|
</ItemGroup>
|
||||||
|
<ItemGroup>
|
||||||
|
<Compile Include="Program.cs" />
|
||||||
|
<Compile Include="Properties\AssemblyInfo.cs" />
|
||||||
|
</ItemGroup>
|
||||||
|
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
|
||||||
|
</Project>
|
250
LZOnDecompress/Program.cs
Normal file
250
LZOnDecompress/Program.cs
Normal file
@ -0,0 +1,250 @@
|
|||||||
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
|
using System.IO;
|
||||||
|
using System.Linq;
|
||||||
|
using System.Text;
|
||||||
|
|
||||||
|
namespace LZOnDecompress {
|
||||||
|
class Program {
|
||||||
|
static int Main(string[] args) {
|
||||||
|
bool success = false;
|
||||||
|
|
||||||
|
try {
|
||||||
|
Console.WriteLine("LZOnDecompress v0.1 by Prof. 9");
|
||||||
|
Console.WriteLine();
|
||||||
|
|
||||||
|
if (args.Length != 1) {
|
||||||
|
Console.WriteLine("Usage:");
|
||||||
|
Console.WriteLine(" LZOnDecompress.exe <filename>");
|
||||||
|
#if DEBUG
|
||||||
|
Console.ReadKey();
|
||||||
|
#endif
|
||||||
|
} else {
|
||||||
|
|
||||||
|
MemoryStream input = new MemoryStream();
|
||||||
|
using (FileStream fs = new FileStream(args[0], FileMode.Open, FileAccess.Read, FileShare.Read)) {
|
||||||
|
fs.CopyTo(input);
|
||||||
|
}
|
||||||
|
|
||||||
|
MemoryStream output = new MemoryStream();
|
||||||
|
input.Position = 0;
|
||||||
|
try {
|
||||||
|
success = Decompress(input, output);
|
||||||
|
} catch { }
|
||||||
|
|
||||||
|
if (success) {
|
||||||
|
Console.WriteLine("File decompressed successfully.");
|
||||||
|
string outPath = Path.GetFileNameWithoutExtension(args[0]) + ".srl";
|
||||||
|
output.Position = 0;
|
||||||
|
using (FileStream fs = new FileStream(outPath, FileMode.Create, FileAccess.Write, FileShare.None)) {
|
||||||
|
output.CopyTo(fs);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
Console.WriteLine("Could not decompress file.");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Console.WriteLine();
|
||||||
|
Console.WriteLine("Done.");
|
||||||
|
} catch (Exception ex) {
|
||||||
|
Console.WriteLine("FATAL: " + ex.Message);
|
||||||
|
return 2;
|
||||||
|
}
|
||||||
|
#if DEBUG
|
||||||
|
Console.ReadKey(true);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return success ? 0 : 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool Decompress(MemoryStream input, MemoryStream output) {
|
||||||
|
int state, len, dist, instr;
|
||||||
|
|
||||||
|
try {
|
||||||
|
// Check header magic.
|
||||||
|
if (input.ReadByte() != 'L' ||
|
||||||
|
input.ReadByte() != 'Z' ||
|
||||||
|
input.ReadByte() != 'O' ||
|
||||||
|
input.ReadByte() != 'n' ||
|
||||||
|
input.ReadByte() != 0x00 ||
|
||||||
|
input.ReadByte() != 0x2F ||
|
||||||
|
input.ReadByte() != 0xF1 ||
|
||||||
|
input.ReadByte() != 0x71) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Read sizes.
|
||||||
|
uint decompressedSize = InputRead32();
|
||||||
|
uint compressedSize = InputRead32() + 17;
|
||||||
|
bool hasInstr = false;
|
||||||
|
state = -1;
|
||||||
|
|
||||||
|
// Process first byte.
|
||||||
|
instr = InputRead8();
|
||||||
|
if (instr > 17) {
|
||||||
|
len = instr - 17;
|
||||||
|
InputCopy();
|
||||||
|
state = Math.Min(instr - 17, 4);
|
||||||
|
} else {
|
||||||
|
hasInstr = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
while (true) {
|
||||||
|
if (input.Position >= compressedSize) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
if (!hasInstr) {
|
||||||
|
instr = InputRead8();
|
||||||
|
}
|
||||||
|
hasInstr = false;
|
||||||
|
|
||||||
|
if (instr <= 0xF) {
|
||||||
|
switch (state) {
|
||||||
|
case 0:
|
||||||
|
len = ReadLen(0, 4) + 3;
|
||||||
|
state = 4;
|
||||||
|
InputCopy();
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
case 2:
|
||||||
|
case 3:
|
||||||
|
len = 2;
|
||||||
|
dist = ReadOper(2, 2) + 1 + (InputRead8() << 2);
|
||||||
|
state = ReadOper(0, 2);
|
||||||
|
DictionaryCopy();
|
||||||
|
break;
|
||||||
|
case 4:
|
||||||
|
len = 3;
|
||||||
|
dist = ReadOper(2, 2) + 2049 + (InputRead8() << 2);
|
||||||
|
state = ReadOper(0, 2);
|
||||||
|
DictionaryCopy();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
} else if (instr <= 0x1F) {
|
||||||
|
len = ReadLen(0, 3) + 2;
|
||||||
|
int x = InputRead16();
|
||||||
|
dist = (ReadOper(3, 1) << 14) + 16384 + (x >> 2);
|
||||||
|
if (dist == 16384) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
state = x & 0b11;
|
||||||
|
DictionaryCopy();
|
||||||
|
} else if (instr <= 0x3F) {
|
||||||
|
len = ReadLen(0, 5) + 2;
|
||||||
|
int x = InputRead16();
|
||||||
|
dist = 1 + (x >> 2);
|
||||||
|
state = x & 0b11;
|
||||||
|
DictionaryCopy();
|
||||||
|
} else if (instr <= 0x7F) {
|
||||||
|
len = ReadOper(5, 1) + 3;
|
||||||
|
int x = InputRead8();
|
||||||
|
dist = ReadOper(2, 3) + 1 + (x << 3);
|
||||||
|
state = ReadOper(0, 2);
|
||||||
|
DictionaryCopy();
|
||||||
|
} else {
|
||||||
|
len = ReadOper(5, 2) + 5;
|
||||||
|
dist = ReadOper(2, 3) + 1 + (InputRead8() << 3);
|
||||||
|
state = ReadOper(0, 2);
|
||||||
|
DictionaryCopy();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (state < 4) {
|
||||||
|
len = state;
|
||||||
|
InputCopy();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
while (output.Length < decompressedSize) {
|
||||||
|
output.WriteByte(0);
|
||||||
|
}
|
||||||
|
} catch (EndOfStreamException) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
return true;
|
||||||
|
|
||||||
|
byte InputRead8() {
|
||||||
|
int b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
return (byte)b;
|
||||||
|
}
|
||||||
|
|
||||||
|
ushort InputRead16() {
|
||||||
|
ushort r = 0;
|
||||||
|
|
||||||
|
int b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += (ushort)b;
|
||||||
|
|
||||||
|
b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += (ushort)(b << 8);
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint InputRead32() {
|
||||||
|
uint r = 0;
|
||||||
|
|
||||||
|
int b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += (uint)(b << 24);
|
||||||
|
|
||||||
|
b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += (uint)(b << 16);
|
||||||
|
|
||||||
|
b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += (uint)(b << 8);
|
||||||
|
|
||||||
|
b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += (uint)b;
|
||||||
|
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
int ReadOper(int shift, int bits) {
|
||||||
|
return (instr >> shift) & ((1 << bits) - 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
int ReadLen(int shift, int bits) {
|
||||||
|
int mask = (1 << bits) - 1;
|
||||||
|
int r = (instr >> shift) & mask;
|
||||||
|
if (r == 0) {
|
||||||
|
r = mask;
|
||||||
|
int b;
|
||||||
|
while ((b = input.ReadByte()) == 0) {
|
||||||
|
r += 255;
|
||||||
|
}
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
r += b;
|
||||||
|
}
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
void InputCopy() {
|
||||||
|
int b;
|
||||||
|
while (len-- > 0) {
|
||||||
|
b = input.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
output.WriteByte((byte)b);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void DictionaryCopy() {
|
||||||
|
int b;
|
||||||
|
while (len-- > 0) {
|
||||||
|
output.Position -= dist;
|
||||||
|
b = output.ReadByte();
|
||||||
|
if (b < 0) throw new EndOfStreamException();
|
||||||
|
output.Position += dist - 1;
|
||||||
|
output.WriteByte((byte)b);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
36
LZOnDecompress/Properties/AssemblyInfo.cs
Normal file
36
LZOnDecompress/Properties/AssemblyInfo.cs
Normal file
@ -0,0 +1,36 @@
|
|||||||
|
using System.Reflection;
|
||||||
|
using System.Runtime.CompilerServices;
|
||||||
|
using System.Runtime.InteropServices;
|
||||||
|
|
||||||
|
// General Information about an assembly is controlled through the following
|
||||||
|
// set of attributes. Change these attribute values to modify the information
|
||||||
|
// associated with an assembly.
|
||||||
|
[assembly: AssemblyTitle("LZOnDecompress")]
|
||||||
|
[assembly: AssemblyDescription("")]
|
||||||
|
[assembly: AssemblyConfiguration("")]
|
||||||
|
[assembly: AssemblyCompany("")]
|
||||||
|
[assembly: AssemblyProduct("LZOnDecompress")]
|
||||||
|
[assembly: AssemblyCopyright("Copyright © Prof. 9 2018")]
|
||||||
|
[assembly: AssemblyTrademark("")]
|
||||||
|
[assembly: AssemblyCulture("")]
|
||||||
|
|
||||||
|
// Setting ComVisible to false makes the types in this assembly not visible
|
||||||
|
// to COM components. If you need to access a type in this assembly from
|
||||||
|
// COM, set the ComVisible attribute to true on that type.
|
||||||
|
[assembly: ComVisible(false)]
|
||||||
|
|
||||||
|
// The following GUID is for the ID of the typelib if this project is exposed to COM
|
||||||
|
[assembly: Guid("dff70b93-87d4-4bd7-bc96-3af6d18d40ab")]
|
||||||
|
|
||||||
|
// Version information for an assembly consists of the following four values:
|
||||||
|
//
|
||||||
|
// Major Version
|
||||||
|
// Minor Version
|
||||||
|
// Build Number
|
||||||
|
// Revision
|
||||||
|
//
|
||||||
|
// You can specify all the values or you can default the Build and Revision Numbers
|
||||||
|
// by using the '*' as shown below:
|
||||||
|
// [assembly: AssemblyVersion("1.0.*")]
|
||||||
|
[assembly: AssemblyVersion("1.0.0.0")]
|
||||||
|
[assembly: AssemblyFileVersion("1.0.0.0")]
|
25
readme.md
Normal file
25
readme.md
Normal file
@ -0,0 +1,25 @@
|
|||||||
|
# LZOnDecompress
|
||||||
|
|
||||||
|
Quick and dirty LZOn decompressor. LZOn is the format used for compressed multiboot files in DS Download Station ROMs.
|
||||||
|
|
||||||
|
Usage:
|
||||||
|
|
||||||
|
```
|
||||||
|
LZOnDecompress.exe <filename>
|
||||||
|
```
|
||||||
|
|
||||||
|
Produces filename.nds in the working directory.
|
||||||
|
|
||||||
|
**NO SUPPORT PROVIDED.** Feel free to report bugs though.
|
||||||
|
|
||||||
|
## LZOn reference
|
||||||
|
|
||||||
|
```
|
||||||
|
0x00: Magic "LZOn"
|
||||||
|
0x04: Magic 0x00,0x2F,0xF1,0x71 (presumably)
|
||||||
|
0x08: Size of decompressed file (32-bit, big endian)
|
||||||
|
0x0C: Size of compressed file minus 0x11 (32-bit big endian)
|
||||||
|
0x10: LZO compressed data stream (follows https://www.kernel.org/doc/Documentation/lzo.txt). Note that 16-bit values in the LZO stream are little endian.
|
||||||
|
```
|
||||||
|
|
||||||
|
Output generated by decompressing the LZO data stream and then padding to the decompressed file size specified in the header with 0x00 bytes.
|
Loading…
Reference in New Issue
Block a user