c++操作io常见命令

#ifndef COMMAND_H_INCLUDED
#define COMMAND_H_INCLUDED

#include <iostream>
#include <fstream>
#include "utility.h"
#include "io.h"
#include "stdio.h"

using namespace std;

class command
{
public:
    int wc(const string&,const char);
    void cat(const string&);
    void ls(const string& _path,int );
    int search_index(const string&,const string&);
    //void ls(const string&);
    vector<string> getwords(const string&);
    vector<string> sort_q(const vector<string>&);

    vector<string> unique_w(const vector<string>&);

};


vector<string> command::unique_w(const vector<string>& _ws)
{
    vector<string> temp;
    string comparestr="";
    for(int i=0;i!=_ws.size();++i)
    {
        if(_ws[i]!=comparestr)
        {
            temp.push_back(_ws[i]);
            comparestr=_ws[i];
        }
    }
    return temp;
}

vector<string> command::getwords(const string& _filename)
{
    vector<string> Ret;
    ifstream in;
    Utility::open_file(in,_filename);
    string line;
    while(getline(in,line))
    {
        int frontP=0;
        for(int i=0;i!=line.size();++i)
        {
            if(line[i]==‘ ‘||line[i]==‘,‘||i==line.size()-1)
            {
                Ret.push_back(line.substr(frontP,i-frontP));
                frontP=i+1;
            }
        }
    }
    return Ret;
}


vector<string> command::sort_q(const vector<string>& _ws)
{
    return Utility::sort_quick(_ws);
}

 int command::wc(const string& _filename,const char _option)
{
     int RSTcount=0;
    switch(_option)
    {
        case ‘w‘:
            {
                ifstream in;
                Utility::open_file(in,_filename);
                string line;
                while(getline(in,line))
                {
                    for(int i=0;i!=line.size();++i)
                    {
                        if(line[i]==‘ ‘||line[i]==‘,‘)
                        {
                            ++RSTcount;
                        }
                    }
                    ++RSTcount;
                }
            }
        case ‘c‘:
        {
            //统计字符。
        }
    }
    return RSTcount;
}

void command::cat(const string& _filename)
{
    ifstream in;
    Utility::open_file(in,_filename);
    string line;
    while(getline(in,line))
    {
        cout<<line<<endl;
    }
}


struct dir
{
public:
    int isFolder;
    string name;
};

void command::ls(const string& _path,int l)
{
    string dir=_path+"\\*.*";
    vector<_finddata_t> files;
    _finddata_t tmpfile;

    //测试发现第一个file的句饼一般是.,所以tmpfile不处理.
    long lfDir= _findfirst(dir.c_str(),&tmpfile);

    if(lfDir!=-1l)
    {
        while(_findnext(lfDir,&tmpfile)==0)
        {
            string space;
            for(int i=0;i!=l;++i)
            {
                space+="  ";
            }

            if(tmpfile.attrib==_A_SUBDIR&&(tmpfile.name[0])!=‘.‘)//好像有隐藏的.和..文件夹,代表上一个文件夹.这里要去掉.
            {

                printf("%s%s\n",space.c_str(),tmpfile.name);
                ls(_path+"\\"+tmpfile.name,l+1);//习惯了自增++,这里只是要把l+1后传给参数.本身不需要加1.
            }
            else if(tmpfile.attrib!=_A_SUBDIR)//没有文件属性.只能用非文件来替换.以免上面的,上一文件夹..到这里.
            {
                printf("%s%s\n",space.c_str(),tmpfile.name);
            }
        }
    }
    _findclose(lfDir);
}

int command::search_index(const string& _word,const string& _filename)
{
    ifstream in;
    Utility::open_file(in,_filename);
    string line;
    string lines;
    while(getline(in,line))
    {
        lines+=line;
    }

    int position=0;
    bool pitch=false;
    for(position=0;position!=lines.size();++position)
    {
        int index=0;
        pitch=true;
        for(index=0;index!=_word.size();++index)
        {
            if(lines[position+index]!=_word[index])
            {
                pitch=false;
                break;
            }
        }
        if(pitch)
        {
            break;
        }
    }

    if(pitch)
    {
        return position;
    }
    else
    {
        return -1;
    }
}

#endif // COMMAND_H_INCLUDED