关于map,vector,string应用的一道作业，做了多半了，没事拿来晒下。

/* 作业：
文本查询系统ver1.01       查询和生成文件同一文件夹下的一个txt文件的单词。
author laigaoat2005 date:2011-5-8
    vector <string,pair<string:value_type,int>>* read_text(); 读入单词
   
    vector <string,pair<string:value_type,int>>* _in_text; 单词内部表示
//*/
#include <stdio.h>
#include <conio.h>

#include <locale.h>          //for tolower()
#include <utility>         // for pair
#include <vector>
#include <map>
#include <set>
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

class textquery
{
    public:
    textquery():_in_text(0),_in_words_loc(0),_words_locs(0){};
    ~textquery(){   delete _in_text; delete _in_words;delete _words_locs;delete _words_map;    }
    void in_text();        //ok   读入文本 行
    void text_to_words();     //ok   文本行转换为单词
    void filter_word();   //ok    去标点
    void to_lower();     //ok  转换为小写
    void build_words_loc();    //ok   构建单词vector指针、位置vector指针构成的pair
    void build_words_map(); // 建设中……
    void display();     // 显示 单词和位置
    void display_map(); // 正在建设中……  显示 map
   
    private:
    vector <string>* _in_text;           //文本行  ok by in_text();
    vector <string>* _in_words;          //单词集合   ok by text_to_word();
    vector <  pair <int, int>  >* _in_words_loc; //位置集合   ok by text_to_word();
    pair <  vector< string >*,  vector< pair<int,int> >*  >* _words_locs;  //单词vector指针、位置vector指针构成的pair   ok by build_text_loc();
    map <string,vector< pair<int,int> >*>* _words_map;
};




inline void textquery:: display_map() //已经完成
{
    map <    string, vector <  pair< int, int >  >*    >::iterator iter=_words_map->begin(),iter_end=_words_map->end();
    while(    iter != iter_end    )   //迭代map
    {
        cout << "map键[" << iter->first <<"] {\n" ;
            vector<    pair< int, int > >::iterator v_iter     = iter->second->begin(),
                      v_iter_end =  iter->second->end() ;   
            int l_cnt=1;      
            while(v_iter != v_iter_end)             //迭代位置vector
            {
                cout << "(" << v_iter->first << "," << v_iter->second << ") ";
                if(l_cnt%10==0) cout << "\n";
                v_iter++;
                l_cnt++;
            }
            ///*/
        cout << "\n}\n\n\n";
        iter++;
    }
}



inline void textquery::    in_text()
{
    string file_name,read_line;
    cin >> file_name;
    file_name.append(".txt");
    ifstream infile(file_name.c_str(),ios::in);
    if(infile)
    {
        _in_text = new vector<string>;
         while(  getline( infile,read_line, '\n')  )
         {
            _in_text->push_back(read_line);
         }           
    }
    else
    {
        cerr << "error! file not oend!";
        exit (-1);      
    }      
}

inline void textquery:: text_to_words()
{
    _in_words = new vector<string>;
    _in_words_loc = new vector <  pair <int, int>  >;
    int line_num=0;
    vector<string>::iterator iter = _in_text->begin(),iter_end=_in_text->end();
    while(    iter != iter_end    )
    {
        string::value_type pos=0,prev=0;
        int lie_num=0;               
        while(  (pos = iter->find_first_of(" ",pos)) != string::npos   )
        {
            _in_words->push_back(iter->substr(prev,pos-prev));
            _in_words_loc->push_back(  make_pair(line_num,lie_num)  );
            pos++;
            prev=pos;   
            lie_num++;                           
        }
        _in_words->push_back(iter->substr(prev,pos-prev));
        _in_words_loc->push_back(  make_pair(line_num,lie_num)  );
        iter++;      
        line_num++;
    }

}

inline void textquery::display()
{
    vector<string>::iterator iter,iter_end;
    iter = _in_words->begin();
    iter_end = _in_words->end();
    while( iter != iter_end )
    {
        cout << *iter << " ";   
        iter++;   
    }
    cout << "\n\n";
    vector <  pair <int, int>  >::iterator piter,piter_end;
    piter = _in_words_loc->begin();piter_end=_in_words_loc->end();
    while(piter!=piter_end)
    {
        cout << "(" << piter->first << "," << piter->second << ")" ;   
        piter++;   
    }   
    cout << "\n\n";
    /*        ///*/   
}

inline void textquery:: filter_word()
{
    string fuhao("\"1234567890 ,，【】./;'\\。、！@#￥…_&:：*（）—+||+_)(*&^%$#@!~-={}[]<>《》\?？");   
    vector<string>::iterator iter = _in_words->begin(),iter_end=_in_words->end();
    while (        iter!=iter_end    )
    {
        string::value_type pos=0;
        while(    ( pos = iter->find_first_of(fuhao,pos) )  != string::npos        )
        {
            iter->erase(pos,1);           
        }      
        iter++;
    }
}
inline void textquery::to_lower()
{   
    vector<string>::iterator iter = _in_words->begin(),iter_end=_in_words->end();
    string bigletter("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
    while(    iter!=iter_end    )
    {   
        string::value_type pos;
        while(   (pos=iter->find_first_of(bigletter,pos) )!= string::npos    )
        {  
            (*iter)[pos]=tolower((*iter)[pos]);
            pos++;
        }  
        iter++;
    }   
}   

inline void textquery::build_words_loc()
{
    _words_locs = new pair<vector<string>*,vector<pair<int,int> >*>(_in_words,_in_words_loc) ;
}


inline void textquery:: build_words_map()
{
    vector< string >* p_words = (*_words_locs).first ;
    vector< pair<int,int> >* p_locs = (*_words_locs).second;
    _words_map = new map < string,vector<pair<int,int> >* >;
    vector<string>::iterator iter = p_words->begin(), iter_end = p_words->end();    //单词vector iter 对
    int line_num=0;  //单词元素和位置元素 的编号 每个单词和每个位置的编号相同
    while(    iter != iter_end    )    //对单词进行迭代
    {
        //there is or there isn't
        if( _words_map->count(*iter) > 0)       //如果单词 键存在 则修改 map的值：位置 vector
        // there is. modify the location value
        {
            //cout << "map的值： " << (*_words_map)[*iter]  << "\n" ;//是位置vector指针
            (*_words_map)[*iter] //是位置vector指针
            ->insert(            //插入成员函数
                          (*_words_map)[*iter]->end(),     // vectot插入位置(末尾)
                          (*p_locs)[line_num]               //当前单词位置pair
                     );
                 //上面五行应该也可以用push_back();成员函数，空了试下
        }
        else
        {
            vector< pair <int ,int> > * word_loc = new vector<pair<int,int> >;
            word_loc->push_back(    (*p_locs)[line_num]    )     ;      
            (*_words_map).insert(     map<string,  vector< pair<int,int> >*  >:: value_type(   (*iter) , word_loc )   );           
        }
        iter++;
        line_num++;
    }   
}


int main()
{
    textquery query_it;
    query_it.in_text();
    query_it.text_to_words();
    query_it.filter_word();   
    query_it.to_lower();
    query_it.build_words_loc();

    //query_it.display();   
    query_it.build_words_map();
    query_it.display_map();
   
    getch();
   
    return 0;
}