package com.util;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CodeCounter {
static long commentLine = 0;
static long whiteLine = 0;
static long normalLine = 0;
static long totalLine = 0;
static boolean comment = false;
public static void main(String[] args) {
File file = new File("D:\\MyEclipse\\Workspaces\\Util\\src\\com\\util\\Table.java"); // 在这里输入需要统计的文件夹路径
getChild(file);
System.out.println("有效代码行数: " + normalLine);
System.out.println("注释行数: " + commentLine);
System.out.println("空白行数: " + whiteLine);
System.out.println("总代码行数: " + totalLine);
}
private static void getChild(File child) { // 遍历子目录
if (child.getName().matches(".*\\.java$")) { // 只查询java文件
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader(child));
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}
String line = "";
try {
while ((line = br.readLine()) != null) {
parse(line);
}
} catch (IOException e) {
e.printStackTrace();
}
}
if (child.listFiles() != null) {
for (File f : child.listFiles()) {
getChild(f);
}
}
}
private static void parse(String line) {
line = line.trim();
totalLine++;
if (line.length() == 0) {
whiteLine++;
} else if (comment) {
commentLine++;
if (line.endsWith("*/")) {
comment = false;
} else if (line.matches(".*\\*/.+")) {
normalLine++;
comment = false;
}
} else if (line.startsWith("//")) {
commentLine++;
} else if (line.matches(".+//.*")) {
commentLine++;
normalLine++;
} else if (line.startsWith("/*") && line.matches(".+\\*/.+")) {
commentLine++;
normalLine++;
if (findPair(line)) {
comment = false;
} else {
comment = true;
}
} else if (line.startsWith("/*") && !line.endsWith("*/")) {
commentLine++;
comment = true;
} else if (line.startsWith("/*") && line.endsWith("*/")) {
commentLine++;
comment = false;
} else if (line.matches(".+/\\*.*") && !line.endsWith("*/")) {
commentLine++;
normalLine++;
if (findPair(line)) {
comment = false;
} else {
comment = true;
}
} else if (line.matches(".+/\\*.*") && line.endsWith("*/")) {
commentLine++;
normalLine++;
comment = false;
} else {
normalLine++;
}
}
private static boolean findPair(String line) { // 查找