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feat: add write,read,undo,redo operations #24

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Merged
yusuf601 merged 1 commit into from
Sep 6, 2025
Merged

feat: add write,read,undo,redo operations #24

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8 changes: 7 additions & 1 deletion .vscode/settings.json
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,12 @@
"cinttypes": "cpp",
"typeinfo": "cpp",
"valarray": "cpp",
"variant": "cpp"
"variant": "cpp",
"any": "cpp",
"bitset": "cpp",
"complex": "cpp",
"csignal": "cpp",
"forward_list": "cpp",
"stack": "cpp"
}
}
174 changes: 141 additions & 33 deletions case_study/advanced/undo_redo.cpp
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
#include <iostream>
#include <stdexcept>
#include <sstream>
class Stack{
private:
enum Mode{write = 1,read = 2,undo = 3,redo = 4,unknown = 5};
Expand All @@ -26,6 +27,7 @@ class Stack{
}
~Stack(){
delete[] arr;
delete[] temp;
}
public:
Mode classifyInput(const std::string& text){
Expand All @@ -47,62 +49,168 @@ class Stack{
}
return false;
}
std::string get_operation(const std::string& text){
std::string ans = "";
Mode m = classifyInput(text);
if(m == read){
return "read";
}else if(m == write){
return "write";
}else if(m == undo){
return "undo";
}else if(m == redo){
return "redo";
}
return "";
}
bool is_empty()const noexcept{
if(size == 0){
return true;
}
return false;
}
bool temp_is_empty()const noexcept{
if(temp_size == 0){
return true;
}
return false;
}
std::string top(){
return arr[size];
return arr[size - 1];
}
private:
std::string top_temp(){
return temp[temp_size - 1];
}
private:
/**
* @brief fungsi untuk mendapatkan operasi dengan melakukan parser
* terhadap string dengan memisahkan keyword operasi dengan string utama
*
* @param text adalah string input yang masih mentah dalam kata lain masih
* tercampur dengan keyword(write,read,undo,dan redo)
*
* @return string yang berisi operasi apa saja pada sebuah string
*/
std::string get_operation(const std::string& text){
std::string ans = "";
std::istringstream iss(text);
std::string cmd;
iss >> cmd;
Mode m = classifyInput(cmd);
return cmd;
}
/**
* @brief fungsi untuk melakukan parser terhadap string,dengan kata
* lain memisahkan keyword(write,read,undo,dan redo) dengan string utama
*
* @param text adalah string input yang masih mentah dalam kata lain masih
* tercampur dengan keyword(write,read,undo,dan redo)
*
* @return sebuah string setelah di parser
*
* @details memakai istringstream untuk memisahkan keyword dengan string utama
* parameter istringstream(is,str)
* is: objek input stream
* - std::cin(baca dari console)
* - std::ifstream(baca dari file)
* - std::istringstream(baca dari stream) ->kita memakai ini
*/
std::string parser(const std::string& text){
std::istringstream iss(text);
std::string cmd;
iss >> cmd; //ambil kata pertama(keyword)
std::string args;
std::getline(iss,args);
if(!args.empty() && args.front() == ' '){ //jika ada spasi maka erase
args.erase(0,1);
}
return args;
}
private: //abstraksi common operation on stack
void push_arr(const std::string& text){
std::string parser_text = parser(text);
arr[size] = parser_text;
size++;
}
void push_temp(){
temp[temp_size] = top();
temp_size++;
}
void pop_arr(){
arr[size - 1] = "";
size--;
}
void pop_temp(){
temp[temp_size] = "";
temp_size--;
}
public:
void Write(const std::string& text){
if(is_full()){
throw std::runtime_error("Stack telah penuh");
}
Mode m = classifyInput(top());
if(m == read){
arr[size] = text;
size++;
Mode m = classifyInput(text);
if(m == write){
push_arr(text);
}else{
std::string operasi = get_operation(text);
if(!operasi.empty()){
std::cout << "Tidak dapat melakukan operasi" << operasi << std::endl;
}else{
std::cout << "Keyword tidak ditemukan" << std::endl;
}
std::cout << "Error: " << operasi << " not available" << std::endl;
}
}
void pop(){
/**
* @brief undo adalah salah satu operasi pada text editor,adapun tugas nya adalah
* membatalkan perubahan yang user lakukan.
*
* @details cara kerja undo:
* 1.push top pada arr ke temp_stack
* 2.pop element top pada arr
*/
void Undo(const std::string& text){
Mode m = classifyInput(top());
if(m == undo){
temp[temp_size] = top();
temp_size++;
arr[size - 1] = "";
size--;
if(is_empty()){
std::runtime_error("Queue is empty");
}else{
push_temp();
pop_arr();
}
}else{
std::string operasi = get_operation(top());
}
}
public:
void menu(){

void Redo(){
if(temp_is_empty()){
throw std::runtime_error("tidak ada perubahan terbaru");
}else{
arr[size] = top_temp();
size++;
pop_temp();
}
}
void Read(){
for(size_t i = 0;i < size;i++){
std::cout << arr[i] << " ";
}
std::cout << std::endl;
}
public:
std::string input(){
std::string text;
std::cin >> text;
return text;
}
void menu(const std::string& text){
std::string operation = get_operation(text);
Mode m = classifyInput(text);
if(m == write){
Write(text);
}else if(m == read){
Read();
}else if(m == undo){
Undo(text);
}else if(m == redo){
Redo();
}else{
std::string operasi = get_operation(top());
std::cout << "Error: " << operasi << " not available" << std::endl;
}
}
};
int main(){
Stack stack1(1024); //
stack1.Write("write aku");
stack1.Write("write dia");
stack1.Write("write sayang");
stack1.Write("write kamu");
stack1.Read(); // aku dia sayang kamu
stack1.Undo("undo"); // aku dia sayang
stack1.Read();
std::cin.get();
return 0;
}
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