https://github.com/happyeven/WC
项目要求
wc.exe 是一个常见的工具,它能统计文本文件的字符数、单词数和行数。这个项目要求写一个命令行程序,模仿已有wc.exe 的功能,并加以扩充,给出某程序设计语言源文件的字符数、单词数和行数。实现一个统计程序,它能正确统计程序文件中的字符数、单词数、行数,以及还具备其他扩展功能,并能够快速地处理多个文件。具体功能要求:程序处理用户需求的模式为:
程序处理用户需求的模式为:
wc.exe [parameter] [file_name]
- 基本功能列表(已完成):
wc.exe -c file.c //返回文件 file.c 的字符数wc.exe -w file.c //返回文件 file.c 的词的数目 wc.exe -l file.c //返回文件 file.c 的行数
关键代码or设计说明
1.单词、行数、字符的计数
public class Counter {private long character;private long word;private long line;private String text;private long countChar() {return text.length();}private long countWord() {boolean blank = true;long word = 0;for (char c : text.toCharArray()) {if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')){if (blank){blank = false;word++;}}else if (c == '-' && !blank){continue;}else {blank = true;}}return word;}private long countLine() {long line = 0;int index = -1;while((index=text.indexOf("\n", index)) > -1) {index++;line++;}return line;}public Counter(String text) {this.text = text;}public void count() {character = countChar();word = countWord();line = countLine();}public long getWord() {return word;}public long getLine() {return line;}public long getCharacter() {return character;}} 2文件的读取并转换成string类型import java.io.*;public class ReadFileToString { public static String readFileToString(String fileName) { File file = new File(fileName); Long length = file.length(); byte[] bytes = new byte[length.intValue()]; try { FileInputStream in = new FileInputStream(file); in.read(bytes); in.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return new String(bytes); }}3主类,输出需要的结果public class WC {public static void main(String[] args) { String path = args[args.length-1]; // get the file if (args.length <= 0){ System.err.println("please input the argument"); return; } String text = ReadFileToString.readFileToString(path); // count Counter counter = new Counter(text); counter.count(); // output result System.out.print(path + ": "); for (int i = 0; i < args.length-1; i++) { switch (args[i]) { case "-c" :System.out.print("Character: " + counter.getCharacter() + " "); break; case "-w" : System.out.print("word: " + counter.getCharacter() + " "); break; case "-l" : System.out.print("line: " + counter.getCharacter() + " "); break; default: break; } } }}
PSP
PSP2.1 | Personal Software Process Stages | 预估耗时(分钟) | 实际耗时(分钟) |
---|---|---|---|
Planning | 计划 | ||
· Estimate | · 估计这个任务需要多少时间 | 10 | 5 |
Development | 开发 | ||
· Analysis | · 需求分析 (包括学习新技术) | 120 | 130 |
· Design Spec | · 生成设计文档 | 60 | 35 |
· Design Review | · 设计复审 (和同事审核设计文档) | 40 | 30 |
· Coding Standard | · 代码规范 (为目前的开发制定合适的规范) | 20 | 30 |
· Design | · 具体设计 | 60 | 60 |
· Coding | · 具体编码 | 360 | 480 |
· Code Review | · 代码复审 | 30 | 30 |
· Test | · 测试(自我测试,修改代码,提交修改) | 60 | 60 |
Reporting | 报告 | 20 | 20 |
· Test Report | · 测试报告 | 60 | 10 |
· Size Measurement | · 计算工作量 | 30 | 30 |
· Postmortem & Process Improvement Plan | · 事后总结, 并提出过程改进计划 | 30 | 20 |
合计 | 920 | 940 |