C++实现简易文本编辑器分享！

本文实例为大家分享了C++实现文本编辑器的具体代码，供大家参考，具体内容如下

1.简易文本编辑器

2.用链表实现，保存到文件中

  #include<iostream>  #include<string>  #include<cstdlib>  #include<ctype.h>  #include<cstdio>  #include<fstream>  using namespace std;  int NumberCount=0;//数字个数  int CharCount=0;//字母个数  int PunctuationCount=0;//标点符号个数  int BlankCount=0;//空白符个数     class Node  {  public:    string character;    int cursor;    int offset;    Node* next;    Node(){      cursor=0;//每行的光标初始位置      offset=0;//每行的初始偏移位置      next=NULL;    }  };     class TextEditor  {  private:    Node* head;    string name;    int line;//可更改的行数    int length;//行数  public:    TextEditor();    ~TextEditor();    string GetName();    void SetName(string name);    int GetCursor();    int MoveCursor(int offset);    int SetCursor(int line,int offset);    void AddText(const string s);    void InsertText(int seat,string s);    int FindText(string s);    void DeleteText(string s);    int GetLine();    void Count();    friend ostream& operator<<(ostream& out,TextEditor &text);    Node* Gethead(){      return head;    }    //int GetLength()    //{    //   return length;    // }   // int FindText(string s);   // void DeleteText(int seat,string s);  };     TextEditor::TextEditor()  {    head=NULL;    name="test";//文件初始名    //tail=NULL;    line=1;    length=0;  }     TextEditor::~TextEditor()  {    Node* p=head;    Node* q;    while(p!=NULL){      q=p->next;      delete p;      p=q;    }     }     int TextEditor::GetLine()  {    return line;  }     string TextEditor::GetName()  {    return name;  }     void TextEditor::SetName(string name)  {    this->name=name;  }     int TextEditor::GetCursor()  {    Node *p=head;    while(p->next!=NULL)      p=p->next;    return p->cursor;  }     int TextEditor::MoveCursor(int offset)  {    Node *p=head;    int i=1;    if(length+1<line){      cout<<"输入错误!"<<endl;      exit(0);    }    else{      while(p->next!=NULL&&i<line){        p=p->next;        i++;      }    }    if(offset>p->character.length()){      cout<<"移动位置太大!"<<endl;      exit(0);    }    else      p->cursor+=offset;    //cout<<"p ->cursor="<<p->cursor<<endl;    return p->cursor;  }     int TextEditor::SetCursor(int line,int offset)  {    this->line=line;    //cout<<"line="<<this->line<<endl;    return MoveCursor(offset);  }     void TextEditor::AddText(const string s)  {    line=length+1;    Node* p=new Node;    Node* q=head;    p->character=s;    p->next=NULL;    if(head==NULL)      head=p;    else{      while(q->next!=NULL)        q=q->next;      q->next=p;    }         length++;      // line++;  }     void TextEditor::InsertText(int seat,string s)  {    Node *p=head;    int i=1;    if(length+1<line){      cout<<"输入错误!"<<endl;      exit(0);    }    else{      while(p->next!=NULL&&i<line){        p=p->next;        i++;      }    }    //MoveCursor(seat);    //cout<<"p->cursor="<<p->cursor<<endl;    string substr;    for(int i=seat;i<s.length()+seat&&i<=p->character.length();i++)    substr+=p->character[i];       p->character.insert(p->cursor,s);          cout<<"substr="<<substr<<endl;    DeleteText(substr);//覆盖子串    p->cursor=0;//光标清零  }     ostream& operator<<(ostream& out,TextEditor &text)  {    int i=1;    Node* p=text.Gethead();    while(p!=NULL){      out<<p->character<<endl;      p=p->next;    }    // cout<<"length="<<text.GetLength()<<endl;    return out;  }     int TextEditor::FindText(string P)  {    Node* q=head;    //int templine=1;    line=1;    int p=0;    int t=0;    int plen=P.length()-1;    //cout<<"P="<<P<<endl;    //cout<<"plen="<<plen<<endl;    int tlen=q->character.length();    while(q!=NULL){        p=0;        t=0;      tlen=q->character.length();      if(tlen<plen){        line++;         q=q->next;      }         while(p<plen&&t<tlen){        if(q->character[t]==P[p]){          t++;          p++;        }        else{          t=t-p+1;          p=0;        }      }     // cout<<"P="<<P<<endl;     // cout<<"p="<<p<<endl;     // cout<<"plen="<<plen<<endl;      if(p>=plen){           return t-plen+1;      }            else{        line++;        q=q->next;      }       }    return -1;  }     void TextEditor::DeleteText(string s)  {    Node *p=head;    int i=1;    int k=FindText(s);    if(k==-1)      cout<<"未出现该字符串!"<<endl;    else{      while(p!=NULL&&i<line){        p=p->next;        // cout<<p->character<<endl;        i++;      }         p->character.erase(k-1,s.length());      cout<<"删除成功！"<<endl;    }  }     void TextEditor::Count()  {    Node *p=head;    NumberCount=0;    CharCount=0;    PunctuationCount=0;    BlankCount=0;    while(p!=NULL){        for(int i=0;i<p->character.length();i++){          if(p->character[i]>='0'&&p->character[i]<='9')            NumberCount++;          else if(p->character[i]>'a'&&p->character[i]<'z'||p->character[i]>'A'&&p->character[i]<'Z')            CharCount++;          else if(ispunct(p->character[i]))            PunctuationCount++;          else if(p->character[i]==' ')            BlankCount++;        }        p=p->next;    }  }     int main()  {    int i,j,k,n=2;    string s,t,name;    TextEditor text;    cout<<"---------------------------------------"<<endl;    cout<<"1.添加字符"<<endl;    cout<<"2.设置文档免费精选名字大全"<<endl;    cout<<"3.获取文档免费精选名字大全"<<endl;    cout<<"4.显示光标位置"<<endl;    cout<<"5.设置光标位置，在光标位置处插入文本"<<endl;    cout<<"6.在文档中查找文本"<<endl;    cout<<"7.在文档中删除文本"<<endl;    cout<<"8.统计字母、数字、标点符号、空白符号及总字符个数"<<endl;    cout<<"9.输入文本"<<endl;    cout<<"0.退出"<<endl;    while(n){      // cout<<endl;      cout<<endl;      cout<<"---------------------------------------"<<endl;      cout<<"请输入:";      cin>>n;      getchar();      switch(n){        case 1: cout<<"请输入字符:"; getline(cin,s,'n'); text.AddText(s); break;        case 2: cout<<"请输入文档免费精选名字大全:"; cin>>name; text.SetName(name); break;        case 3: cout<<text.GetName()<<endl; break;        case 4: cout<<"光标在第"<<text.GetLine()<<"行，第"<<text.GetCursor()<<"个字符前!"<<endl; break;        case 5:{          cout<<"输入行数:";          cin>>i;          cout<<"光标在第"<<text.GetCursor()<<"个字符前!"<<endl;          cout<<"输入移动位数:";          cin>>j;          cout<<"输入插入字符:";          getchar();          getline(cin,s);          text.InsertText(text.SetCursor(i,j),s); break;        }        case 6: {          cout<<"输入查找的字符串:";          getline(cin,s);          int k=text.FindText(s);          if(k==-1)            cout<<"查找失败!"<<endl;          else            cout<<"所查找文本首次出现在:"<<text.GetLine()<<"行，第"<<k<<"个字符处!"<<endl;            break;        }        case 7: cout<<"输入要删除的字符串:"; getline(cin,s); text.DeleteText(s); break;        case 8: {          text.Count();          cout<<"文档中共有:"<<endl;          cout<<NumberCount<<"个数字"<<endl;          cout<<CharCount<<"个字母"<<endl;          cout<<PunctuationCount<<"个标点符号"<<endl;          cout<<BlankCount<<"个空白字符"<<endl;          cout<<"共有"<<NumberCount+CharCount+PunctuationCount+BlankCount<<"个字符!"<<endl;          break;        }        case 9: cout<<text; break;        case 0:{          string ss=text.GetName();          ss+=".txt";          cout<<ss<<endl;          ofstream outFile(ss.c_str());          Node* p=text.Gethead();          while(p!=NULL){            outFile<<p->character<<endl;            p=p->next;          }          exit(0);          break;        }        default: cout<<"输入错误，请重新输入！"<<endl; break;      }       }  }

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