统计行代码量
java实现的。
本来想找一个，结果好费劲又得安装Python又得安装库的，还不如自己实现，恰好最近在解析超级复杂的.c文件，统计个行数简直是小case。
注释只考虑了以下3种，大概率也够用了：
//xxx /*xxx*/ /** * xxx */ <!--xxx--> //忘记考虑了html中的注释，算啦，以后再说，不大重要 效果：
---------------------------------------------------------------------------------------- Language files sumLines blank comment code code/sumLines ---------------------------------------------------------------------------------------- JAVA 103 10663 1597 1309 7757 72.75% JSP 2 8 2 0 6 75.00% HTML 52 11566 1398 20 10148 87.74% JS 390 225696 36322 6288 183086 81.12% CSS 80 46068 5474 600 39994 86.82% ---------------------------------------------------------------------------------------- SUM 627 294001 44793 8217 240991 81.97% ---------------------------------------------------------------------------------------- 代码：
package com.example.java_practise.统计代码量工具; import java.io.*; import java.util.ArrayList; import java.util.List; public class CodeLines { public static void main(String[] args) { String root = D:\\java\\ideaProjects\\dynamic_validate; CodeLines o = new CodeLines(); o.printCodeLines(root); } public void printCodeLines(String filePath) { String type1 = (.*\\.java$); String type2 = (.*\\.jsp$); String type3 = (.*\\.html$); String type4 = (.*\\.js$); String type5 = (.*\\.css$); //String type6 = (.*); // 全部文件数 //File root = new File(filePath); //List<String> filePaths = new ArrayList<String>(); //int sumFiles = listAll(root, filePaths, type6).size(); int[] r1 = readByType(filePath, type1); int[] r2 = readByType(filePath, type2); int[] r3 = readByType(filePath, type3); int[] r4 = readByType(filePath, type4); int[] r5 = readByType(filePath, type5); int[] sums = new int[4]; for (int j = 0; j < 4; j++) { sums[j] = r1[j] + r2[j] + r3[j] + r4[j] + r5[j]; } System.out.println(----------------------------------------------------------------------------------------); System.out.printf( %-20s%-10s%-10s%-10s%-10s%-10s%14s\n, Language, files, sumLines, blank, comment, code, code/sumLines); System.out.println(----------------------------------------------------------------------------------------); int s = r1[4] + r2[4] + r3[4] + r4[4] + r5[4]; System.out.printf( %-20s%-10d%-10d%-10d%-10d%-10d%6.2f%%\n, JAVA, r1[0], r1[4], r1[1], r1[2], r1[3], r1[3] * 100.0 / r1[4]); System.out.printf( %-20s%-10d%-10d%-10d%-10d%-10d%6.2f%%\n, JSP, r2[0], r2[4], r2[1], r2[2], r2[3], r2[3] * 100.0 / r2[4]); System.out.printf( %-20s%-10d%-10d%-10d%-10d%-10d%6.2f%%\n, HTML, r3[0], r3[4], r3[1], r3[2], r3[3], r3[3] * 100.0 / r3[4]); System.out.printf( %-20s%-10d%-10d%-10d%-10d%-10d%6.2f%%\n, JS, r4[0], r4[4], r4[1], r4[2], r4[3], r4[3] * 100.0 / r4[4]); System.out.printf( %-20s%-10d%-10d%-10d%-10d%-10d%6.2f%%\n, CSS, r5[0], r5[4], r5[1], r5[2], r5[3], r5[3] * 100.0 / r5[4]); System.out.println(----------------------------------------------------------------------------------------); System.out.printf( %-20s%-10d%-10d%-10d%-10d%-10d%6.2f%%\n, SUM, sums[0], s, sums[1], sums[2], sums[3], sums[3] * 100.0 / s); System.out.println(----------------------------------------------------------------------------------------); } private int[] readByType(String filePath, String type) { File root = new File(filePath); List<String> filePaths = new ArrayList<String>(); filePaths = listAll(root, filePaths, type); int codeLine = 0; int commentLine = 0; int blankLine = 0; for (String fp : filePaths) { int[] re = readOneFile(fp); System.out.println(当前文件 + fp); System.out.println(代码行数： + re[0]); System.out.println(注释行数： + re[1]); System.out.println(空行数： + re[2]); codeLine += re[0]; commentLine += re[1]; blankLine += re[2]; } int files = filePaths.size(); int sum = codeLine + commentLine + blankLine; int[] re = {files, blankLine, commentLine, codeLine, sum}; return re; } public int[] readOneFile(String filePath) { try { String encoding = UTF-8; File file = new File(filePath); int codeLine = 0; int commentLine = 0; int blankLine = 0; if (file.isFile() && file.exists()) { //判断文件是否存在 InputStreamReader read = new InputStreamReader( new FileInputStream(file), encoding);//考虑到编码格式 BufferedReader bufferedReader = new BufferedReader(read); String lineTxt = null; while ((lineTxt = bufferedReader.readLine()) != null) { lineTxt = lineTxt.trim(); if (lineTxt.equals()) { blankLine++; } else if (lineTxt.matches((^\\s*/{2}.*)|(^\\s*/?\\*.*))) { // 匹配 1 以任意空格+//或/或*开头的行，就是/**/和//注释 2 以*/结尾的 if (lineTxt.matches((^\\s*/\\*.*)) && !lineTxt.matches((.*\\*/\\s*$))) { // 以/*开头 却不以*/结尾。 while ((lineTxt = bufferedReader.readLine()) != null) { commentLine++; if (lineTxt.matches((.*\\*/\\s*$))) { // 以*/结束 commentLine++; break; } } } } else { codeLine++; } } read.close(); int[] re = {codeLine, commentLine, blankLine}; return re; } else { System.out.println(找不到指定的文件); return null; } } catch (Exception e) { System.out.println(读取文件内容出错); e.printStackTrace(); return null; } } private List<String> listAll(File root, List<String> filePaths, String reg) { if (root.exists()) { File[] files = root.listFiles(); if (files != null && files.length > 0) { for (int i = 0; i < files.length; i++) { if (files[i].exists() && files[i].isDirectory()) { listAll(files[i], filePaths, reg); } else { String path = files[i].getAbsolutePath(); if (path.matches(reg)) { filePaths.add(path); } } } } } return filePaths; } }