Nebula3学习笔记(5): 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: