package?cmd;

import?static?strsrc.EnvVar.curDir;
import?static?strsrc.EnvVar.prevDir;
import?static?strsrc.EnvVar.HOME;

import?java.io.File;

public?class?CD?{
	private?String?params;
	private?String?targetDir;//目標路徑
	private?String?result;
	private?File?file;
	public?CD（String?_params）{
		this.params=_params;
		if（““.equals（params））{
			targetDir=HOME;
		}else{
			targetDir=params.split（“?“）[0];
		}
		file=new?File（targetDir）;
		result=““;
	}
	public?String?execute（）{
		if（“.“.equals（targetDir））{
			prevDir=curDir;
		}
		if（“..“.equals（targetDir））{
			prevDir=curDir;
			if（!isRoot（curDir））{
				curDir=file.getAbsolutePath（）;
			}
		}else?if（“-“.equals（targetDir））{
			prevDir=curDir;
			curDir=HOME;
		}else?if（!file.exists（））{
			return?“bash:?cd:?“+targetDir+“:?沒有那個文件或目錄“;
		}else{
			prevDir=curDir;
			curDir=targetDir;
		}
		return?result;
	}
	private?boolean?isRoot（String?dir）{
		if（dir.length（）<=3）{
			return?true;
		}
		return?false;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????301??2014-06-26?11:21??JTerminal\.classpath

?????文件????????386??2014-06-26?21:56??JTerminal\.project

?????文件????????598??2014-06-26?11:24??JTerminal\.settings\org.eclipse.jdt.core.prefs

????I.A....?????????3??2014-06-26?21:57??JTerminal\.svn\entries

????I.A....?????????3??2014-06-26?21:57??JTerminal\.svn\format

????I.A....??????1791??2014-06-26?21:59??JTerminal\.svn\pristine\02\02906e514a65964a913ed325721a072f90992d55.svn-base

????I.A....???????764??2014-06-26?21:59??JTerminal\.svn\pristine\05\05605f8dca514ef0df9c70e494bd7529d47c9381.svn-base

????I.A....???????598??2014-06-26?21:59??JTerminal\.svn\pristine\17\1738f633fc4a9029a9b29c54a7d3fc9dfb4ca9cf.svn-base

????I.A....??????1514??2014-06-26?21:59??JTerminal\.svn\pristine\23\23845fcc6f0efe278eb4863fe36a577142168dba.svn-base

????I.A....???????292??2014-06-26?21:59??JTerminal\.svn\pristine\44\440a0911b7934536159ae22693155fca3abc3151.svn-base

????I.A....??????1031??2014-06-26?21:59??JTerminal\.svn\pristine\54\54da782037a5be93c88c5e1ceb2c305e3631b17a.svn-base

????I.A....???????386??2014-06-26?21:59??JTerminal\.svn\pristine\58\5863d39700ff080e4b4dad1b6c7589a00ba0f679.svn-base

????I.A....???????579??2014-06-26?21:59??JTerminal\.svn\pristine\63\63158d94b73c7118b91bad24b4ab59a7811aea1b.svn-base

????I.A....??????1037??2014-06-26?21:59??JTerminal\.svn\pristine\6f\6ff6b85bfced19c7a53b76eb732ba5f324f7643d.svn-base

????I.A....??????1495??2014-06-26?21:59??JTerminal\.svn\pristine\75\75a6aecc8539f7866794468a2725a73c59c9676e.svn-base

????I.A....???????301??2014-06-26?21:59??JTerminal\.svn\pristine\93\9362e57b11f40e949fe976d0434a78c828fd6a4f.svn-base

????I.A....??????1679??2014-06-26?21:59??JTerminal\.svn\pristine\a8\a8295966b58bfe40ff46e577c5c2cc1dec154a16.svn-base

????I.A....???????342??2014-06-26?21:59??JTerminal\.svn\pristine\b1\b109d658028b582295873d2c49de45c2c35d63c9.svn-base

????I.A....??????4036??2014-06-26?21:59??JTerminal\.svn\pristine\be\be37a38e12eb59d4b2cbfa6c43acc12fd0c54087.svn-base

????I.A....??????1601??2014-06-26?21:59??JTerminal\.svn\pristine\c3\c350713a5532edc0cb4c059286cd9d2940b90d3d.svn-base

????I.A....???????323??2014-06-26?21:59??JTerminal\.svn\pristine\d3\d3d3c43ecc61d8d76d28fb9f0cbb7996a1b9be45.svn-base

????I.A....??????1619??2014-06-26?21:59??JTerminal\.svn\pristine\e1\e1e2dabc8c3aa6ae7a8afd0b52e26439b2423569.svn-base

????I.A....??????5413??2014-06-26?21:59??JTerminal\.svn\pristine\e5\e5bf395fae8e253f9d0e6c0539af291de9f499a7.svn-base

????I.A....?????43008??2014-06-26?21:59??JTerminal\.svn\wc.db

?????文件???????1514??2014-06-27?12:51??JTerminal\bin\cmd\CD.class

?????文件????????764??2014-06-27?12:51??JTerminal\bin\cmd\Command.class

?????文件???????1791??2014-06-27?12:51??JTerminal\bin\cmd\LS.class

?????文件????????394??2014-06-27?12:55??JTerminal\bin\cmd\PWD.class

?????文件???????1076??2014-06-27?17:36??JTerminal\bin\gui\CaretSample$1.class

?????文件???????1938??2014-06-27?17:36??JTerminal\bin\gui\CaretSample.class

............此處省略62個文件信息