Nebula3学习笔记(6): IO实战, ZIP解压缩程序

上一次熟悉了IO系统后, 写个程序来练练手.

正好这次看到App命名空间, 正好熟悉一下ConsoleApplication的用法. 因为Nebula3内置了ZipFileSystem, 但不支持压缩, 只支持解压缩, 就试着写了一个命令行的unzip.exe, 算是对之前所学的一个总结.

没想解压缩就像拷贝文件一样简单! 因为当zip文件挂载到IO系统后, 可以像本地文件一样使用其中的文件, 呵呵.

1: /******************************************************************** 2: created: 2008/07/08 3: created: 8:7:2008 16:15 4: filename: UnZip.cpp 5: author: xoyojank 6: 7: purpose: zip file extract test 8: *********************************************************************/ 9: 10: #include "stdneb.h" 11: #include "UnZipApp.h" 12: 13: using namespace Util; 14: 15: //------------------------------------------------------------------------------ 16: /** 17: */ 18: void __cdecl 19: main(int argc, const char** argv) 20: { 21: CmdLineArgs args(argc, argv); 22: UnZipApp app; 23: app.SetCompanyName("Xoyojank"); 24: app.SetAppName("UnZip"); 25: app.SetCmdLineArgs(args); 26: if (app.Open()) 27: { 28: app.Run(); 29: app.Close(); 30: } 31: system("pause"); 32: app.Exit(); 33: }

1: /******************************************************************** 2: created: 2008/07/08 3: created: 8:7:2008 16:16 4: filename: UnZipApp.h 5: author: xoyojank 6: 7: purpose: UnZip Application 8: *********************************************************************/ 9: #pragma once 10: #include "stdneb.h" 11: #include "app/consoleapplication.h" 12: 13: class UnZipApp : public App::ConsoleApplication 14: { 15: public: 16: UnZipApp(void); 17: 18: /// open the application 19: virtual bool Open(); 20: /// run the application, return when user wants to exit 21: virtual void Run(); 22: 23: private: 24: /// a recursion method to unzip the files under "dir" 25: void UnZipDir(Util::String& dir); 26: private: 27: Util::String zipFileName; 28: Util::String sourcePath; 29: Util::String targetPath; 30: };

1: /******************************************************************** 2: created: 2008/07/08 3: created: 8:7:2008 16:19 4: filename: UnZipApp.cpp 5: author: xoyojank 6: 7: purpose: UnZip Application 8: *********************************************************************/ 9: #include "UnZipApp.h" 10: 11: 12: UnZipApp::UnZipApp(void) 13: { 14: } 15: 16: bool UnZipApp::Open() 17: { 18: if (ConsoleApplication::Open()) 19: { 20: // help info 21: if (this->args.HasArg("-help")) 22: { 23: n_printf("-file: the .zip file to unzip.\n"); 24: n_printf("-path: where are the files unzip to, if this args is omitted, the file will be unzip into current directory.\n"); 25: return false; 26: } 27: 28: Util::String zipFile; 29: zipFile = this->args.GetString("-file"); 30: // current .exe directory 31: this->sourcePath = Util::String("bin:") + zipFile; 32: bool fileValid = this->ioServer->MountZipArchive(this->sourcePath); 33: if (!fileValid) 34: { 35: // absolute path 36: this->sourcePath = Util::String("file:///") + zipFile; 37: fileValid = this->ioServer->MountZipArchive(this->sourcePath); 38: if (!fileValid) 39: { 40: n_error("Cannot open zip file.\n"); 41: return false; 42: } 43: } 44: this->zipFileName = zipFile.ExtractFileName(); 45: this->zipFileName.StripFileExtension(); 46: this->sourcePath = this->sourcePath.ExtractDirName() + "/"; 47: 48: // target directory 49: this->targetPath = this->args.GetString("-path"); 50: if (this->targetPath.Length() <= 1 || this->targetPath[1] != ':') 51: {// relative path 52: this->targetPath = Util::String("bin:") + this->targetPath; 53: } 54: else 55: {// absolute path 56: this->targetPath = Util::String("file:///") + this->targetPath; 57: } 58: this->targetPath += "/"; 59: if (this->sourcePath == this->targetPath) 60: { 61: n_printf("the source diretory cannot be the same with the destination!"); 62: return false; 63: } 64: return true; 65: } 66: return false; 67: } 68: 69: void UnZipApp::Run() 70: { 71: UnZipDir(this->zipFileName); 72: } 73: 74: void UnZipApp::UnZipDir( Util::String& dir ) 75: { 76: // create a new directory 77: this->ioServer->CreateDirectory(this->targetPath + dir); 78: // unzip the files in this directory 79: Util::Array<Util::String> listFile = this->ioServer->ListFiles(this->sourcePath + dir, "*"); 80: for (IndexT i = 0; i < listFile.Size(); i++) 81: { 82: Util::String curFile = this->targetPath + dir + "/" + listFile[i]; 83: this->ioServer->CopyFile(this->sourcePath + dir + "/" + listFile[i], curFile); 84: n_printf("%s\n", curFile.AsCharPtr()); 85: } 86: // unzip the sub directories 87: Util::Array<Util::String> listDir = this->ioServer->ListDirectories(this->sourcePath + dir, "*"); 88: for (IndexT i = 0; i < listDir.Size(); i++) 89: { 90: Util::String curDir = dir + "/" + listDir[i]; 91: n_printf("%s\n", (this->targetPath + curDir).AsCharPtr()); 92: UnZipDir(curDir); 93: } 94: }

调试参数:

运行结果: