Number of lines of code under Scan folder

A whim to know how many lines of code are in the project. Took a little time to write a preliminary demo, the principle is very simple, scan the project src directory, get all the files read by line, each read a row, cumulative plus 1.

The difficulty: How to skip the directory and get the file under the directory and the next level of the directory, where recursion is better.

Deficiencies: The recognition of comments is not supported, the identification of code submitter is not supported, time classification is not supported, file type classification, the total character statistics are not supported.

Improve the way: single-line comments easier, trim the judge whether to start with//, or with a regular match, more than a bit of trouble, may want to read the entire file content, and then through regular matching/***/and/**/content, other functions are not very difficult, interested students can realize their own.

Code

public class Scanmain {public static void main (string[] args) {int codeLine = 0;        Code Scan path String scanpath = "F:\\PROTOCOLCONVERT\\SRC"; File RootFile = new file (Scanpath);
        In fact, there is no need to initialize, the method is all written as static on the line, here is set before the global variable scanmain SM = new Scanmain ();        list<file> files = new arraylist<> ();        Files = Sm.scan (Getallfiles (RootFile), files);        System.out.println (Files.size ());        for (File fn:files) {Codeline+=sm.countcode (FN);    } System.out.println (CodeLine);        }//reads the file by line and accumulates the number of rows public int countcode (file file) {int i = 0; try {InputStreamReader read = new InputStreamReader (new FileInputStream (file), "UTF-8");//test            Consider the encoding format BufferedReader BufferedReader = new BufferedReader (read);            String line= "";            while (line = Bufferedreader.readline ())!=null) {i++;        }} catch (FileNotFoundException e) {e.printstacktrace ();        } catch (IOException e) {e.printstacktrace ();    } return i;    }//This step seems to be superfluous. public static file[] Getallfiles (File f) {File[] files = f.listfiles ();    return files;    }//using recursive scanning of folders, all directories continue to look down and all files are stored in result. Public list<file> Scan (file[] files,list<file> result) {for (File fn:files) {if (fn.isdirect            Ory ()) {Scan (fn.listfiles (), result);                }else{System.out.println ("Shi");            Result.add (FN);    }} return result; }}

　　

Number of lines of code under Scan folder