C++实现简易文本编辑器_C/C++

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.设置文档名字"<<endl;

									  cout<<"3.获取文档名字"<<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<<"请输入文档名字:"; 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;

									    }

									  }

									}