├── .gitattributes ├── .gitignore ├── README.md ├── StringCompressing.csproj ├── StringCompressing.sln └── Utility.cs /.gitattributes: -------------------------------------------------------------------------------- 1 | ############################################################################### 2 | # Set default behavior to automatically normalize line endings. 3 | ############################################################################### 4 | * text=auto 5 | 6 | ############################################################################### 7 | # Set default behavior for command prompt diff. 8 | # 9 | # This is need for earlier builds of msysgit that does not have it on by 10 | # default for csharp files. 11 | # Note: This is only used by command line 12 | ############################################################################### 13 | #*.cs diff=csharp 14 | 15 | ############################################################################### 16 | # Set the merge driver for project and solution files 17 | # 18 | # Merging from the command prompt will add diff markers to the files if there 19 | # are conflicts (Merging from VS is not affected by the settings below, in VS 20 | # the diff markers are never inserted). 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Backup files are not needed, 240 | # because we have git ;-) 241 | _UpgradeReport_Files/ 242 | Backup*/ 243 | UpgradeLog*.XML 244 | UpgradeLog*.htm 245 | ServiceFabricBackup/ 246 | *.rptproj.bak 247 | 248 | # SQL Server files 249 | *.mdf 250 | *.ldf 251 | *.ndf 252 | 253 | # Business Intelligence projects 254 | *.rdl.data 255 | *.bim.layout 256 | *.bim_*.settings 257 | *.rptproj.rsuser 258 | *- Backup*.rdl 259 | 260 | # Microsoft Fakes 261 | FakesAssemblies/ 262 | 263 | # GhostDoc plugin setting file 264 | *.GhostDoc.xml 265 | 266 | # Node.js Tools for Visual Studio 267 | .ntvs_analysis.dat 268 | node_modules/ 269 | 270 | # Visual Studio 6 build log 271 | *.plg 272 | 273 | # Visual Studio 6 workspace options file 274 | *.opt 275 | 276 | # Visual Studio 6 auto-generated workspace file (contains which files were open etc.) 277 | *.vbw 278 | 279 | # Visual Studio LightSwitch build output 280 | **/*.HTMLClient/GeneratedArtifacts 281 | **/*.DesktopClient/GeneratedArtifacts 282 | **/*.DesktopClient/ModelManifest.xml 283 | **/*.Server/GeneratedArtifacts 284 | **/*.Server/ModelManifest.xml 285 | _Pvt_Extensions 286 | 287 | # Paket dependency manager 288 | .paket/paket.exe 289 | paket-files/ 290 | 291 | # FAKE - F# Make 292 | .fake/ 293 | 294 | # JetBrains Rider 295 | .idea/ 296 | *.sln.iml 297 | 298 | # CodeRush personal settings 299 | .cr/personal 300 | 301 | # Python Tools for Visual Studio (PTVS) 302 | __pycache__/ 303 | *.pyc 304 | 305 | # Cake - Uncomment if you are using it 306 | # tools/** 307 | # !tools/packages.config 308 | 309 | # Tabs Studio 310 | *.tss 311 | 312 | # Telerik's JustMock configuration file 313 | *.jmconfig 314 | 315 | # BizTalk build output 316 | *.btp.cs 317 | *.btm.cs 318 | *.odx.cs 319 | *.xsd.cs 320 | 321 | # OpenCover UI analysis results 322 | OpenCover/ 323 | 324 | # Azure Stream Analytics local run output 325 | ASALocalRun/ 326 | 327 | # MSBuild Binary and Structured Log 328 | *.binlog 329 | 330 | # NVidia Nsight GPU debugger configuration file 331 | *.nvuser 332 | 333 | # MFractors (Xamarin productivity tool) working folder 334 | .mfractor/ 335 | 336 | # Local History for Visual Studio 337 | .localhistory/ 338 | 339 | # BeatPulse healthcheck temp database 340 | healthchecksdb -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # StringCompressing 2 | 3 | 簡單的做 字串壓縮 純文字轉純文字，作法很簡單，先將 字串 轉 byte[] => 使用 7z 壓縮 => 轉 base 85 => 輸出 4 | 5 | Simple library to compress string 6 | 7 | Concept : string => byte[] => 7z byte[] => convert to base85 string 8 | 9 | 10 | Dependency: 11 | 12 | [SimpleBase](https://www.nuget.org/packages/SimpleBase/ "SimpleBase") 13 | 14 | [SevenZipSharp.Interop](https://www.nuget.org/packages/SevenZipSharp.Interop/ "SevenZipSharp.Interop") 15 | 16 | 17 | Sample Code : 18 | 19 | ```csharp 20 | 21 | //Finally Quick Compress String And Decompress String 22 | Console.WriteLine("Finally.. Quick Compress String And Decompress String"); 23 | var compressedString = Utility.QuickCompressString(str); 24 | var uncompressFromcompressedString = Utility.QuickDecompressString(compressedString); 25 | Console.WriteLine("Is equal to Source ?"); 26 | Console.ForegroundColor = ConsoleColor.Blue; 27 | Console.WriteLine(uncompressFromcompressedString == str); 28 | Console.ForegroundColor = ConsoleColor.White; 29 | 30 | ``` 31 | 32 | 33 | Detail Test Code (no need to read) : 34 | 35 | ```csharp 36 | 37 | //var str = "許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當許當麻許功蓋許蓋功當麻許許麻當"; 38 | 39 | //var str = File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + "story2.txt"); 40 | 41 | var str = File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + "story1.txt"); 42 | 43 | Console.WriteLine("Source Length:"); 44 | Console.WriteLine(str.Length); 45 | Console.WriteLine("\r\n--\r\n"); 46 | 47 | 48 | Console.WriteLine("Source Byte Length: "); 49 | Console.WriteLine(Encoding.UTF8.GetBytes(str).Length); 50 | Console.WriteLine("\r\n--\r\n"); 51 | 52 | Console.WriteLine("Source Byte Length After Compressing"); 53 | // var compresedBytes = Utility.CompressBytes(Encoding.UTF8.GetBytes(str)); 54 | var compresedBytes = Utility.CompressBytes7z(Encoding.UTF8.GetBytes(str)); 55 | Console.WriteLine(compresedBytes.Length); 56 | Console.WriteLine("\r\n--\r\n"); 57 | 58 | 59 | 60 | Console.WriteLine("Get Base85 String After Compressed Byte[]"); 61 | var compressByteToBase85 = Utility.GetBase85(compresedBytes); 62 | //Console.WriteLine(compressByteToBase85); 63 | Console.WriteLine("Length:"); 64 | Console.ForegroundColor = ConsoleColor.Red; 65 | Console.WriteLine(compressByteToBase85.Length); 66 | Console.ForegroundColor = ConsoleColor.White; 67 | Console.WriteLine("\r\n==\r\n"); 68 | //File.WriteAllText(AppDomain.CurrentDomain.BaseDirectory + "result.txt", compressByteToBase85); 69 | 70 | 71 | //Reverse To Source 72 | 73 | Console.WriteLine("Convert Bae85 String to Byte[]"); 74 | Console.WriteLine("Length:"); 75 | var byteFromBase85 = Utility.BytesFromBase85(compressByteToBase85); 76 | Console.WriteLine(byteFromBase85.Length); 77 | Console.WriteLine("\r\n--\r\n"); 78 | 79 | 80 | //Decompress From byte[] 81 | Console.WriteLine("Decompress Byte[]"); 82 | Console.WriteLine("Length:"); 83 | // var decompressByte = Utility.DecompressBytes(byteFromBase85); 84 | var decompressByte = Utility.DecompressBytes7z(byteFromBase85); 85 | Console.WriteLine(decompressByte.Length); 86 | Console.WriteLine("\r\n--\r\n"); 87 | 88 | //Convert byte[] to Source String 89 | Console.WriteLine("Source String Length after decompressing:"); 90 | var sourceString = Encoding.UTF8.GetString(decompressByte); 91 | Console.WriteLine(sourceString.Length); 92 | Console.WriteLine("\r\n--\r\n"); 93 | 94 | 95 | 96 | //Check Result 97 | Console.WriteLine("Is equal to Source ?"); 98 | Console.ForegroundColor = ConsoleColor.Green; 99 | Console.WriteLine(sourceString == str); 100 | Console.ForegroundColor = ConsoleColor.White; 101 | Console.WriteLine("\r\n--\r\n"); 102 | 103 | 104 | 105 | 106 | ``` 107 | -------------------------------------------------------------------------------- /StringCompressing.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | netcoreapp3.1 5 | 6 | 7 | 8 | AnyCPU 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | -------------------------------------------------------------------------------- /StringCompressing.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 16 4 | VisualStudioVersion = 16.0.30330.147 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StringCompressing", "StringCompressing.csproj", "{4EAFF354-BA4B-4315-AF12-7B9B44527A5A}" 7 | EndProject 8 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StringCompressing.Test", "..\StringCompressing.Test\StringCompressing.Test.csproj", "{8E80DF4C-D255-4769-9B44-DB069DC84BFA}" 9 | EndProject 10 | Global 11 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 12 | Debug|Any CPU = Debug|Any CPU 13 | Release|Any CPU = Release|Any CPU 14 | EndGlobalSection 15 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 16 | {4EAFF354-BA4B-4315-AF12-7B9B44527A5A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 17 | {4EAFF354-BA4B-4315-AF12-7B9B44527A5A}.Debug|Any CPU.Build.0 = Debug|Any CPU 18 | {4EAFF354-BA4B-4315-AF12-7B9B44527A5A}.Release|Any CPU.ActiveCfg = Release|Any CPU 19 | {4EAFF354-BA4B-4315-AF12-7B9B44527A5A}.Release|Any CPU.Build.0 = Release|Any CPU 20 | {8E80DF4C-D255-4769-9B44-DB069DC84BFA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 21 | {8E80DF4C-D255-4769-9B44-DB069DC84BFA}.Debug|Any CPU.Build.0 = Debug|Any CPU 22 | {8E80DF4C-D255-4769-9B44-DB069DC84BFA}.Release|Any CPU.ActiveCfg = Release|Any CPU 23 | {8E80DF4C-D255-4769-9B44-DB069DC84BFA}.Release|Any CPU.Build.0 = Release|Any CPU 24 | EndGlobalSection 25 | GlobalSection(SolutionProperties) = preSolution 26 | HideSolutionNode = FALSE 27 | EndGlobalSection 28 | GlobalSection(ExtensibilityGlobals) = postSolution 29 | SolutionGuid = {201B34A3-8429-4CEC-ACE6-99DDE380BC99} 30 | EndGlobalSection 31 | EndGlobal 32 | -------------------------------------------------------------------------------- /Utility.cs: -------------------------------------------------------------------------------- 1 | using SevenZip; 2 | using SimpleBase; 3 | using System; 4 | using System.IO; 5 | using System.IO.Compression; 6 | using System.Text; 7 | 8 | namespace StringCompressing 9 | { 10 | public class Utility 11 | { 12 | public static string GetBase85(byte[] bytedata) 13 | { 14 | 15 | if (bytedata == null) 16 | { 17 | throw new NullReferenceException(); 18 | } 19 | return Base85.Ascii85.Encode(bytedata); 20 | } 21 | 22 | public static byte[] BytesFromBase85(string base85str) 23 | { 24 | 25 | if (string.IsNullOrEmpty(base85str)) 26 | { 27 | throw new NullReferenceException(); 28 | } 29 | 30 | Span result = Base85.Ascii85.Decode(base85str); 31 | 32 | return result.ToArray(); 33 | } 34 | 35 | public static byte[] CompressBytes7z(byte[] source) 36 | { 37 | return SevenZip.SevenZipCompressor.CompressBytes(source); 38 | } 39 | 40 | public static byte[] DecompressBytes7z(byte[] source) 41 | { 42 | 43 | return SevenZip.SevenZipExtractor.ExtractBytes(source); 44 | } 45 | 46 | public static byte[] CompressBytes(byte[] source) 47 | { 48 | using (var resultMStream = new MemoryStream()) 49 | using (var zipStream = new GZipStream(resultMStream, System.IO.Compression.CompressionLevel.Optimal)) 50 | { 51 | zipStream.Write(source, 0, source.Length); 52 | zipStream.Close(); 53 | return resultMStream.ToArray(); 54 | } 55 | } 56 | 57 | public static byte[] DecompressBytes(byte[] source) 58 | { 59 | using (var compressedStream = new MemoryStream(source)) 60 | using (var zipStream = new GZipStream(compressedStream, System.IO.Compression.CompressionMode.Decompress)) 61 | using (var result = new MemoryStream()) 62 | { 63 | zipStream.CopyTo(result); 64 | return result.ToArray(); 65 | } 66 | } 67 | 68 | 69 | public static string QuickCompressString(string uncompressString) 70 | { 71 | return GetBase85((CompressBytes7z((Encoding.UTF8.GetBytes(uncompressString))))); 72 | } 73 | 74 | public static string QuickDecompressString(string compressedString) 75 | { 76 | return Encoding.UTF8.GetString((DecompressBytes7z((BytesFromBase85(compressedString))))); 77 | } 78 | } 79 | } 80 | --------------------------------------------------------------------------------