#ifndef UTILS_HPP_FILEEDITOR_H
#define UTILS_HPP_FILEEDITOR_H
#include “MyString.h”
#include”MyList.h”
#include <iostream>
#include <fstream>
#include<cctype>
using namespace std;
class Editor {
private:
BiLinkList<CharString> StringBuffer;
int curLineNo{0};
// int tarLineNo{0};
// CharString Line{“”};
char userCommand{‘?’};
ifstream inFile;
ofstream outFile;
public:
bool UserSaysYes();
void NextLine();
void PreviousLine();
void GotoLine(int tarLineNo);
void InsertLine(int LineNo, const CharString &newLine);
void ChangeLine(int LineNo, const CharString &newLine);
void DeleteLine(int LineNo);
void ReadFile();
void WriteFile();
void FindCharString(const CharString &tarLine);
void View();//�鿴����ʾ��������
void ShowLine(int num);//��ʾ��ǰ��
// i(insert), e(end), q(quit), d(delete), g(goto), v(view), ?/h(help), n(next)
// p(prior), b(begin), r(read), w(write), c(change)
char GetCommand();
void RunCommand(char ch);
void Run();
};
void Editor::Run() {
char infName[255] = “”, outfName[255] = “”;
cout << “�����ļ���(ȱʡ:file_in.txt):” << endl;
strcpy(infName, Read(cin).CStr());
if (strlen(infName) == 0) {
strcpy(infName, “file_in.txt”);
}
cout << “����ļ���(ȱʡ:file_out.txt):” << endl;
strcpy(outfName, Read(cin).CStr());
if (strlen(outfName) == 0) {
strcpy(outfName, “file_out.txt”);
}
inFile.open(infName, ios::in);
outFile.open(outfName, ios::out | ios::app);
if (inFile.fail()) {
cout << “û�������ļ�: ” << infName << endl;
}
if (outFile.fail()) {
cout << “����ļ���ʧ��” << endl;
}
ReadFile();
while ((userCommand = GetCommand()) != ‘q’) {
RunCommand(userCommand);
}
RunCommand(‘q’);
inFile.close();
outFile.close();
}
char Editor::GetCommand() {
if (curLineNo == 0) {
cout << “? “;
} else {
cout << “\n��ǰ������: “;
ShowLine(curLineNo);
cout << “?”;
// CharString curLine = StringBuffer.GetElem(curLineNo);
// cout << curLineNo << “: ” << curLine << endl << “? “;
}
cin >> userCommand;
userCommand = tolower(userCommand);
while (cin.get() != ‘\n’); // �����û��������������
return userCommand;
}
void Editor::RunCommand(char ch) {
int tarLineNo;
CharString Line;
switch (ch) {
case ‘b’:
if (StringBuffer.Empty()) {
cout << “����Ϊ��” << endl;
} else {
GotoLine(1);
}
break;
case ‘e’:
if (StringBuffer.Empty()) {
cout << “����Ϊ��” << endl;
} else {
GotoLine(StringBuffer.Length());
}
break;
case ‘q’:
cout << “���������” << endl;
break;
case ‘d’:
cout << “������Ҫɾ��������: “;
cin >> tarLineNo;
if (tarLineNo < 0 || tarLineNo > StringBuffer.Length()) {
cout << “�������” << endl;
} else {
DeleteLine(tarLineNo);
cout << “ɾ����” << tarLineNo << “�гɹ�” << endl;
}
break;
case ‘i’:
cout << “������Ҫ����һ�в���: “;
cin >> tarLineNo;
getchar();
if (tarLineNo < 0 || tarLineNo > StringBuffer.Length() + 1) {
cout << “�������” << endl;
} else {
cout << “�����������ı�: “;
Line = Read(cin);
InsertLine(tarLineNo, Line);
}
break;
case ‘c’:
cout << “������Ҫ�ĵ�����: “;
cin >> tarLineNo;
getchar();
if (tarLineNo < 0 || tarLineNo > StringBuffer.Length()) {
cout << “�������” << endl;
} else {
cout << “�������ĺ���ı�: “;
Line = Read(cin);
ChangeLine(tarLineNo, Line);
}
break;
case ‘g’:
cout << “������Ҫ��ת������: “;
cin >> tarLineNo;
if (tarLineNo < 0 || tarLineNo > StringBuffer.Length()) {
cout << “�������” << endl;
} else {
GotoLine(tarLineNo);
}
break;
case ‘v’:
View();
break;
case ‘r’:
ReadFile();
break;
case ‘w’:
WriteFile();
break;
case ‘f’:
cout << “������Ҫ���ҵ�����: “;
Line = Read(cin);
FindCharString(Line);
break;
case ‘n’:
if (curLineNo == StringBuffer.Length()) {
cout << “�Ѿ������һ��” << endl;
} else {
NextLine();
}
break;
case ‘p’:
if (curLineNo == 0) {
cout << “�Ѿ��ǵ�һ��” << endl;
} else {
PreviousLine();
}
break;
case ‘?’:
case ‘h’:
cout << “��Чָ�” << endl;
cout << “b(begin), e(end), i(insert), d(delete), c(change), g(goto), ” << endl;
cout << “v(view), r(read), w(write), ?/h(help), n(next), p(prior)” << endl;
break;
default:
cout << “������?/h�Ի�ȡ����” << endl;
}
}
void Editor::ShowLine(int num) {
CharString curLine = StringBuffer.GetElem(num);
cout << num << “: ” << curLine << endl;
}
bool Editor::UserSaysYes() {
cout << “�Ƿ�ȷ���˳���(Y/N): “;
char op;
cin >> op;
op = toupper(op);
while (cin.get() != ‘\n’);
if (op == ‘Y’) {
// ������������д���ļ�
WriteFile();
return true;
} else {
return false;
}
}
void Editor::NextLine() {
curLineNo++;
ShowLine(curLineNo);
}
void Editor::PreviousLine() {
curLineNo–;
ShowLine(curLineNo);
}
void Editor::GotoLine(int tarLineNo) {
curLineNo = tarLineNo;
ShowLine(curLineNo);
}
void Editor::InsertLine(int LineNo, const CharString &newLine) {
curLineNo = LineNo;
StringBuffer.Insert(curLineNo, newLine);
cout << “�����гɹ��� “;
ShowLine(curLineNo);
}
void Editor::ChangeLine(int LineNo, const CharString &newLine) {
curLineNo = LineNo;
StringBuffer.SetElem(curLineNo, newLine);
ShowLine(curLineNo);
}
void Editor::DeleteLine(int LineNo) {
curLineNo = LineNo – 1;
StringBuffer.Delete(LineNo);
}
void Editor::View() {
if (StringBuffer.Length() == 0) {
cout << “��ǰ����Ϊ��” << endl;
} else {
cout << “��ǰ��������: ” << endl;
for (int i = 1; i <= StringBuffer.Length(); i++) {
ShowLine(i);
}
}
}
void Editor::WriteFile() {
CharString Line;
for (int i = 1; i <= StringBuffer.Length(); i++) {
Line = StringBuffer.GetElem(i);
outFile << i << “: ” << Line << endl;
}
}
void Editor::ReadFile() {
CharString Line;
Line = Read(inFile);
StringBuffer.Insert(StringBuffer.Length() + 1, Line);
while (!inFile.eof()) {
Line = Read(inFile);
if (!Line.Empty()) {
StringBuffer.Insert(StringBuffer.Length() + 1, Line);
}
}
}
void Editor::FindCharString(const CharString &tarLine) {
CharString Line, res;
int count = 0;
for (int i = 1; i <= StringBuffer.Length(); i++) {
Line = StringBuffer.GetElem(i);
int t = Line.search(tarLine, res);
if (t) {
cout << i << “: ” << res << endl;
count += t;
}
}
if (!count) {
cout << “û���ҵ�Ŀ������” << endl;
} else {
cout << “һ���ҵ�” << count << “�����ϵ�����” << endl;
}
}
#endif //UTILS_HPP_FILEEDITOR_H
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