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优化代码是无止境的
随笔 - 65, 文章 - 9, 评论 - 26, 引用 - 0
数据加载中……

代码统计

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class CodeCounter {
    
    
static long normalLines = 0;
    
static long commentLines = 0;
    
static long whiteLines = 0;
    
    
public static void main(String[] args) {
        File f 
= new File("D:\\share\\JavaProjects\\TankWar1.9.11\\src");
        File[] codeFiles 
= f.listFiles();
        
for(File child : codeFiles){
            
if(child.getName().matches(".*\\.java$")) {
                parse(child);
            }
        }
        
        System.out.println(
"normalLines:" + normalLines);
        System.out.println(
"commentLines:" + commentLines);
        System.out.println(
"whiteLines:" + whiteLines);
        
    }

    
private static void parse(File f) {
        BufferedReader br 
= null;
        
boolean comment = false;
        
try {
            br 
= new BufferedReader(new FileReader(f));
            String line 
= "";
            
while((line = br.readLine()) != null) {
                line 
= line.trim();
                
if(line.matches("^[\\s&&[^\\n]]*$")) {
                    whiteLines 
++;
                } 
else if (line.startsWith("/*"&& !line.endsWith("*/")) {
                    commentLines 
++;
                    comment 
= true;    
                } 
else if (line.startsWith("/*"&& line.endsWith("*/")) {
                    commentLines 
++;
                } 
else if (true == comment) {
                    commentLines 
++;
                    
if(line.endsWith("*/")) {
                        comment 
= false;
                    }
                } 
else if (line.startsWith("//")) {
                    commentLines 
++;
                } 
else {
                    normalLines 
++;
                }
            }
        } 
catch (FileNotFoundException e) {
            e.printStackTrace();
        } 
catch (IOException e) {
            e.printStackTrace();
        } 
finally {
            
if(br != null) {
                
try {
                    br.close();
                    br 
= null;
                } 
catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}

posted on 2009-02-09 13:23 lanjh 阅读(297) 评论(5)  编辑  收藏 所属分类: Java App

评论

# re: 代码统计  回复  更多评论   

这个算法比较简单,而且没有考虑折行的问题,难能可贵的是是自己实现这个算法,鼓励了
2009-02-10 11:13 | jeasonzhao

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