Java代码统计工具

迈不过友情╰ 2022-11-15 01:23 195阅读 0赞

package cn.surpass;
    
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileReader;
    import java.io.IOException;
    
    /** * @author lianghj */
    public class StatisticCodeLines { 
        /** * 有效程序行数 */
        public static int normalLines = 0;
        /** * 空白行数 */
        public static int whiteLines = 0;
    
        /** * 注释行数 */
        public static int commentLines = 0;
    
        /** * 统计的代码的文件后缀名 */
        public static String EXT_FILE = ".java";
    
        /** * 统计的文件夹 */
        public static String STATISTIC_FOLDER = "F:\\Test";
    
        public static void main(String[] args) throws IOException { 
    
            File file = new File(STATISTIC_FOLDER);
            if (file.exists()) { 
                traverseFolder(file);
            }
            System.out.println(new Print(file.getName(),normalLines,whiteLines,commentLines));
        }
    
        /** * 递归遍历文件夹 * * @param file * @throws IOException */
        private static void traverseFolder(File file) throws IOException { 
    
            if (file.isDirectory()) { 
                File[] files = file.listFiles();
                for (int i = 0; i < files.length; i++) { 
                    traverseFolder(files[i]);
                }
            }
            //统计扩展名为java的文件
            if (file.isFile() && file.getName().endsWith(EXT_FILE)) { 
               parseFile(file);
            }
    
        }
    
        /** * 解析文件 */
        private static void parseFile(File file) { 
            // 判断此行是否为注释行
            boolean comment = false;
            int tempWhiteLines = 0;
            int tempCommentLines = 0;
            int tempNormalLines = 0;
    
            try (
                    FileReader fr = new FileReader(file);
                    BufferedReader br = new BufferedReader(fr)) { 
                String line = "";
                while ((line = br.readLine()) != null) { 
                    line = line.trim();
                    if (line.matches("^[//s&&[^//n]]*$")) { 
                        // 空行
                        tempWhiteLines++;
                    } else if (line.startsWith("/*")) { 
                        // 判断此行为"/*"开头的注释行
                        tempCommentLines++;
                        //结尾不为*/的注释行
                        comment = !line.endsWith("*/");
                    } else if (comment == true && !line.endsWith("*/")) { 
                        // 为多行注释中的一行（不是开头和结尾）
                        tempCommentLines++;
                    } else if (comment == true && line.endsWith("*/")) { 
                        // 为多行注释的结束行
                        tempCommentLines++;
                        comment = false;
                    } else if (line.startsWith("//")) { 
                        // 单行注释行
                        tempCommentLines++;
                    } else { 
                        // 正常代码行
                        tempNormalLines++;
                    }
                }
    
                System.out.println(new Print(file.getName(), tempNormalLines, tempWhiteLines, tempCommentLines));
                whiteLines += tempWhiteLines;
                commentLines += tempCommentLines;
                normalLines += tempNormalLines;
    
            } catch (Exception e) { 
                throw new RuntimeException(e);
            }
        }
    
        /** * 结果打印 */
        static class Print{ 
            private String fileName;
            private int normalLines;
            private int whileLines;
            private int commentLines;
    
            public Print(String fileName, int normalLines, int whileLines, int commentLines) { 
                this.fileName = fileName;
                this.normalLines = normalLines;
                this.whileLines = whileLines;
                this.commentLines = commentLines;
            }
    
            private int totalLines(){ 
                return normalLines+whileLines+commentLines;
            }
    
            @Override
            public String toString() { 
                return String.format("文件名称(%s)代码统计:\r\n\t有效行数:\t%d\n\r\t空白行数:\t%d\n\r\t注释行数:\t%d\n\r\t总计行数:\t%d",
                        fileName, normalLines, whileLines, commentLines, totalLines());
            }
        }
    }