Java line feed conversion

Import java. Io .*;

Import java. util. RegEx. matcher;

Import java. util. RegEx. pattern;

 

Public class testhuanhang {

/*

* It is applicable to converting UNIX line breaks/x0a of all files in a directory to/x0d/x0a on Windows.

* It is stored in another folder. Use different folder names.

* Parameter 1, source folder, parameter 2 destination folder, parameter 3 filtered regular expression. Parameter 4, new line breaks. Parameters 1, 2, and 3 must be specified

The format of parameter 4 is CRLF, Cr, or lf.

* Both the target folder and the original folder must exist in advance.

* Example of a command: Java testhuanhang. Work. xml CRLF

*/

 

Public static void main (final string [] ARGs ){

If (ARGs. Length <3 ){

System. Out. println ("Enter the folder containing the Unix line break file, and the folder to be placed after conversion! And the filtered regular ");

System. Exit (0 );

}

File srcfolder = new file (ARGs [0]);

File destfolder = new file (ARGs [1]);

If (! (Srcfolder. isdirectory () & destfolder. isdirectory ())){

System. Out. println ("the source folder and target folder must exist and are Directories! ");

System. Exit (0 );

}

If (srcfolder. compareto (destfolder) = 0 ){

System. Out. println ("the source folder and target folder cannot be the same! ");

System. Exit (0 );

}

 

If (ARGs. Length = 4 &&! (ARGs [3]. equalsignorecase ("CRLF") | ARGs [3]. equalsignorecase ("lf") | ARGs [3]. equalsignorecase ("cr "))){

System. Out. println ("Please specify the correct line delimiter! Such as CRLF, Cr, or lf ");

System. Exit (0 );

 

}

 

String Sline = "";

If (ARGs. Length = 3 ){

Sline = "/N ";

} Else if (ARGs [3]. equalsignorecase ("CRLF ")){

Sline = character. tostring (char) 13) + character. tostring (char) 10 );

} Else if (ARGs [3]. equalsignorecase ("cr ")){

Sline = character. tostring (char) 13 );

} Else {

Sline = character. tostring (char) 10 );

}

File [] SRCS = srcfolder. listfiles (New filenamefilter (){

 

Public Boolean accept (File Dir, string name ){

Matcher M = pattern. Compile (ARGs [2]). matcher (name );

If (M. Find ()){

Return true;

} Else {

Return false;

}

}

});

 

For (File SRC: SRCS ){

Bufferedreader BR = NULL;

Printwriter PW = NULL;

Try {

Try {

BR = new bufferedreader (New filereader (SRC ));

PW = new printwriter (new file (destfolder. getabsolutepath (), SRC. getname ()));

String line;

While (null! = (Line = Br. Readline ())){

PW. Print (LINE + Sline );

}

} Finally {

Try {

If (BR! = NULL ){

BR. Close ();

}

} Finally {

 

If (PW! = NULL ){

PW. Close ();

}

}

}

} Catch (exception e ){

}

}

 

 

}

}