第十六周上机实践——项目6-处理C++源代码的程序

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/*   *Copyright (c)2016,烟台大学计算机与控制工程学院   *All rights reserved.   *文件名称：main.cpp   *作    者：郭永恒   *完成日期：2016年6月27日   *版 本 号：v1.0   *   *问题描述：写一个处理c++源代码的程序，可以判断main函数个数，让花括号独占一行，可以去除注释或者注释一部分 */

Process.h:

#ifndef PROCESS_H_INCLUDED#define PROCESS_H_INCLUDED#include <vector>#include <string>using std::string;using std::vector;class Process{public:    Process();    ~Process();    void deleteComment();    void insertALineBreak();    void commentSection();    void display();private:    void read();    void write();    bool notSpace(string&);    vector<string> codes;    string filename;};#endif // PROCESS_H_INCLUDED

Process.cpp:

#include "Process.h"#include <cctype>#include <fstream>#include <string>#include <iostream>#include <cstdlib>using namespace std;Process::Process(){    cout << " 请输入文件名：";    cin >> filename;    ifstream infile(filename);    int main_num = 0;    if(infile)    {        while(!infile.eof())        {            string str;            getline(infile,str);            if(str.find("main()") != -1 && str.find("main()") != str.rfind("main()"))            {                cout << " 含有多个main函数" << endl;                exit(1);            }            else if(str.find("main()") != -1)                ++main_num;            if(main_num > 1)            {                cout << " 含有多个main函数" << endl;                exit(1);            }            codes.push_back(str);        }    }    else    {        cout << " 打开错误" << endl;        exit(1);    }    infile.close();}Process::~Process(){    ofstream outfile("Result.cpp");    for(string& str : codes)        if(notSpace(str))            outfile << str << endl;    outfile.close();}void Process::insertALineBreak(){    int time = 0;    for(string& str : codes)    {        int flag;        if((flag = str.find("{")) != -1)        {            if(flag > 0 && str[flag-1] != '\n')                str.insert(flag,"\n");        }        if((flag = str.find("}")) != -1)        {            if(flag < str.size() && flag > 0 && str[flag-1] != '\n')                str.insert(flag,"\n");        }        ++time;    }    write();    read();}void Process::commentSection(){    int n,m;    cout << " 请输入n和m，注释n行和m行之间的部分（包括n行和m行）：" << endl;    cin >> n >> m;    codes.insert(codes.begin()+n,string("/*"));    codes.insert(codes.begin()+m+1,string("*/"));    write();    read();}void Process::deleteComment(){    int flag,time = 0,sstart,send;    for(string& str : codes)    {        if((flag = str.find("//")) != -1)            str.erase(flag);        else if((flag = str.find("/*")) != -1)        {            str.erase(flag);            sstart = time;        }        else if((flag = str.find("*/")) != -1)        {            str.replace(0,flag+2,"");            send = time;            for(vector<string>::iterator s = codes.begin()+sstart+1; s != codes.begin() + send; ++s)                (*s).clear();        }        ++time;    }    write();    read();}bool Process::notSpace(string& str){    int judge = 0;    for(char& c : str)        if(isalpha(c) || isdigit(c) || ispunct(c))            return true;    return false;}void Process::display(){    int time = 1;    for(string& str : codes)        if(notSpace(str))        {   cout << time << "\t";            cout << str << endl;            ++time;        }}void Process::read(){    codes.clear();    ifstream infile("Result.cpp");    if(infile)    {        while(!infile.eof())        {            string str;            getline(infile,str);            codes.push_back(str);        }    }    infile.close();}void Process::write(){    ofstream outfile("Result.cpp");    for(string& str : codes)        if(notSpace(str))            outfile << str << endl;    outfile.close();}

main函数:

#include <iostream>#include "Process.h"using namespace std;int main(){    Process pro;    cout << " 处理前：" << endl;    pro.display();    pro.insertALineBreak();    pro.deleteComment();    cout << " 处理后：" << endl;    pro.display();    return 0;}

运行结果：

程序缺陷太多了

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