简易文本编辑器c语言（C++文本编辑器）

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 #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; } } }