C++实现简易文本编辑器
1、上机作业呗(老师最近越来越没人性了)
2、代码
头文件texteditor.h
#ifndef TEXTEDITOR_H_INCLUDED
#define TEXTEDITOR_H_INCLUDED
#include"string.h"
#include
#include
#include
#include
using namespace std;
class TextEditor{
private:
int cursor;
int line;
int offset;
int total;
int letters;
int quots;
int nums;
int spaces;
string textName;
list article;
public:
TextEditor();
~TextEditor();
const string & getName() const;
void setName(const string &name);
int getCursor(int *,int *) const;
int moveCursor(int);
int setCursor(int ,int);
int addText(const string &);
int insertText(string);
int findTextInAll(const string &,int *,int *);
int deleteText(const string &);
int deleteText(int ,int,int);
int saveFile();
void wordState(int *,int *,int *,int *,int *) const;
list::iterator getIndex(int x);
friend ostream & operator<<(ostream &,TextEditor &);
friend istream & operator>>(istream &,TextEditor &);
};
TextEditor:: TextEditor(){
textName = "Untitled";
cursor=1;
line=1;
offset=0;
total =0;
spaces =0;
quots =0;
letters = 0;
nums = 0;
}
TextEditor::~TextEditor(){
}
list::iterator TextEditor::getIndex(int x){
if(x<0)x=0;
if(x>line)x=line;
list::iterator it;
int l = 0;
for(it=article.begin();it!=article.end();it++){
l++;
if(l==x) break;
}
return it;
}
const string & TextEditor::getName() const{
return textName;
}
void TextEditor::setName(const string &name){
if(name.length()!=0){
textName=name;
}
}
int TextEditor::getCursor(int * pLine=NULL,int *pOffset=NULL) const{
*pLine = cursor;
*pOffset=offset;
return 1;
}
int TextEditor::moveCursor(int offset){
list::iterator it =getIndex(cursor);
this->offset+=offset;
while(it->length()offset&&it!=article.end()){
this->offset-=it->length();
cursor++;
it++;
}
return 1;
}
int TextEditor::setCursor(int line ,int offset){
if(line>article.size()) line = article.size();
this->cursor=line;
if(offset<0) offset=0;
if(offset>getIndex(line)->length()) offset = getIndex(line)->length();
this->offset=offset;
return 1;
}
int TextEditor::addText(const string & text){
article.push_back(text);
total+=text.length();
for(int i=0;i='0'&&text[i]<='9') nums++;else
if(text[i]>='a'&&text[i]<='z') letters++;else
if(text[i]>='A'&&text[i]<='Z') letters++;else
quots++;
}
line++;
return 1;
}
int min(int x,int y)
{
return x='0'&&text[i]<='9') nums++;else
if(text[i]>='a'&&text[i]<='z') letters++;else
if(text[i]>='A'&&text[i]<='Z') letters++;else
quots++;
}
if(article.empty()) {
article.push_back(text);
offset = text.length();
return 1;
}
list::iterator it = getIndex(cursor);
string temp=it->substr(0,offset);
temp+=text;
temp +=it->substr(offset);
*it = temp;
return 1;
}
int TextEditor::findTextInAll(const string & text ,int *line,int *offset){
list::iterator it;
int l=0;
int li = *line;
int pp = *offset;
for(it=article.begin();it!=article.end();it++){
l++;
if(*line>l) continue;
if(*linefind(text,(*offset)+1)!=string::npos){
*line = l;
*offset = it->find(text,(*offset)+1);
return 1;
}
}
if(li==*line&&pp==*offset) *offset=-1;
return 1;
}
int TextEditor::deleteText(const string & text){
int line=1,offset=-1;
findTextInAll(text,&line,&offset);
while(1){
if(offset==-1)break;
cout<<"是否删除第"<>c;
if(c[0]!='Y'&&c[0]!='y') continue;
deleteText(line,offset,text.length());
findTextInAll(text,&line,&offset);
}
}
int TextEditor::deleteText(int cursor ,int pos,int length){
list::iterator it = getIndex(cursor);
total-=length;
string text = *it;
for(int i=pos;ilength(),pos+length);i++){
if(text[i]==' ') spaces--;else
if(text[i]>='0'&&text[i]<='9') nums--;else
if(text[i]>='a'&&text[i]<='z') letters--;else
if(text[i]>='A'&&text[i]<='Z') letters--;else
quots--;
}
*it = it->erase(pos,length);
}
void TextEditor::wordState(int *pTotal,int *pLetter,int *pDigit,int *pSpace,int *pQuot) const{
*pTotal = total;
*pLetter =letters;
*pDigit = nums;
*pSpace =spaces;
*pQuot = quots;
}
ostream & operator<<(ostream & out,TextEditor & editor){
int line = 1;
list::iterator it;
out<<"***********"<>(istream & in,TextEditor &editor){
char s[100];
getchar();
gets(s);
string text(s);
editor.insertText(text);
while(1){
cout<<"继续输入(Y 或 N)：";
string c;
in>>c;
if(c[0]!='Y'&&c[0]!='y') break;
getchar();
gets(s);
string ss(s);
editor.insertText(ss);
}
return in;
}
int TextEditor::saveFile(){
string name = textName+".txt";
ofstream out(name.c_str(),ios::out);
list::iterator it;
for(it=article.begin();it!=article.end();it++){
out<<*it<
源文件texteditor.cpp
#include"texteditor.h"
void showInstructions(){
cout<<"*************简易文本编辑器***************\n";
cout<<"选择以下数字进行文本编辑，请使用英文输入法"<>n;
if(n==11) break;
switch(n)
{
case 0:{
showInstructions();
break;
}
case 1:{
cout<<"文档名称为："<>s;
editor.setName(s);
cout<<"设置成功"<>line;
cout<<"光标在这一行的位置:";
cin>>pos;
editor.setCursor(line,pos);
break;
}
case 5:{
cout<>editor;
break;
}
case 6:{
cout<<"请输入要添加的文字："<>c;
if(c[0]!='Y'&&c[0]!='y') break;
getchar();
gets(s);
text = s;
editor.addText(text);
}
break;
}
case 7:{
int total,space,num,quot,letter;
editor.wordState(&total,&letter,&num,&space,");
cout<<"全文总数为："<>as;
if(as==1){
cout<<"请输入要删除的文字:"<>line;
cout<<"\n输入位置：";
cin>>pos;
cout<<"\n输入长度：";
cin>>length;
editor.deleteText(line,pos,length);
cout<<"删除成功"<