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mainwindow.cpp
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mainwindow.cpp
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#include "mainwindow.h"
#include "ui_mainwindow.h"
constexpr unsigned int string2int(const char* str, int h) {
return !str[h] ? 5381 : (string2int(str, h + 1) * 33) ^ str[h];
}
// trim from start
static inline std::string <rim(std::string &s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(), std::not1(std::ptr_fun<int, int>(std::isspace))));
return s;
}
// trim from end
static inline std::string &rtrim(std::string &s) {
s.erase(std::find_if(s.rbegin(), s.rend(), std::not1(std::ptr_fun<int, int>(std::isspace))).base(), s.end());
return s;
}
// trim from both ends
static inline std::string &trim(std::string &s) {
return ltrim(rtrim(s));
}
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
nameOfMainTable = "mainTable.txt";
//ui->tableView->hide();
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_action_triggered()
{
fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
tr("Text Files (*.txt)")).toStdString();
if (!fileName.empty()) {
std::ifstream file;
std::ofstream mainTable;
std::string buffer {};
file.open(fileName);
mainTable.open(nameOfMainTable, std::ios_base::trunc);
mainTable << std::setw(20) <<"Process" << std::setw(8) << "Memory" << std::setw(10) << "Priority" << std::setw(15) << "User" << std::setw(5) << "id" << std::endl;
while (file) {
std::getline(file,buffer);
std::string command = buffer.substr(0,buffer.find(' '));
buffer.erase(0,buffer.find(' '));
char chars[] = "{}- ";
for (unsigned int i = 0; i < strlen(chars); ++i)
{
buffer.erase (std::remove(buffer.begin(), buffer.end(), chars[i]), buffer.end());
}
switch (string2int(command.c_str())) {
case (string2int("add")): { //add process in MAIN table. example syntax: add { ie.exe , 800, 1, user, 2034 }
std::vector <std::string> code = add(buffer);
//std::reverse(std::begin(code), std::end(code));
mainTable << std::setw(20) << code[code.size()-5]<< std::setw(8) << code[code.size()-4] << std::setw(10) << code[code.size()-3] << std::setw(15) << code[code.size()-2] << std::setw(5) << code[code.size()-1]<< std::endl;
break;
};
case (string2int("delete")): { // deletes a row with specified ID. example syntax: delete 2034
std::ifstream fin(nameOfMainTable.c_str());
std::ofstream fout("temporary_file.txt");
std::string line {};
while (fin) {
std::getline(fin,line);
if (line.find(buffer.c_str()) == std::string::npos) fout << line << std::endl;
else continue;
}
fin.close();
fout.close();
remove(nameOfMainTable.c_str());
rename("temporary_file.txt", nameOfMainTable.c_str());
break;
}
case (string2int("sort")): {
std::ifstream fin(nameOfMainTable);
std::ofstream fout("temporary_file.txt");
std::string line {};
std::vector <std::string> xz ;
QString priority = "priority";
QString process = "process";
QString memory = "memory";
QString user = "user";
QString id = "id";
QString column = trim(buffer).c_str();
std::string header_data{};
std::string code {};
std::string temp {};
std::getline(fin,header_data); // read header data in main table
while (fin) {
std::getline(fin,line);
code.clear();
for (int i = 0; i< 5; i++) {
if ( i < 4) {
temp.append(trim(line));
line.clear();
line.append(temp);
temp.clear();
code.append(line.substr(0,line.find(" ")+1));
line.erase(0,line.find(" ")+1);
//line.erase(std::remove_if(line.begin(), line.end(), ::isspace), line.end());
//std::cout<<line<<" line after remove"<<std::endl;
temp.append(trim(line));
line.clear();
line.append(temp);
temp.clear();
}
if (i ==4) {
temp.append(trim(line));
line.clear();
line.append(temp);
temp.clear();
code.append(line.substr(0,line.length()));
line.clear();
}
}
if (!code.empty()) xz.push_back(code);
}
std::vector <std::string> xz_rezerv;
for (int i = 0; i < xz.size();i++)
{
xz_rezerv.push_back(xz.at(i));
}
if (column == process) {
std::sort(xz.begin(), xz.end());
for (int i = 0; i < xz.size(); i++)
{
std::cout << xz.at(i) << std::endl;
}
std::cout<<"column: process"<<std::endl;
}
if (column == memory) {
for (int i = 0; i<xz.size();i++){
std::string temp {};
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
}
std::sort(xz.begin(), xz.end());
for (int i = 0; i < xz_rezerv.size(); i++) {
std::string buffer = trim(xz_rezerv.at(i));
xz_rezerv.at(i).clear();
xz_rezerv.at(i).append(buffer);
buffer.clear();
}
for (int i = 0; i < xz.size(); i++) {
std::string buffer = trim(xz.at(i));
xz.at(i).clear();
xz.at(i).append(buffer);
buffer.clear();
}
std::string buffer {};
for (int i = 0; i<xz_rezerv.size(); i++) {
for (int j = 0; j<xz.size(); j++) {
if (xz_rezerv.at(i).find(xz.at(j).c_str()) != std::string::npos) {
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
buffer.append(xz.at(j));
xz.at(j).clear();
xz.at(j).append(buffer);
buffer.clear();
break;
}
}
}
for (int i = 0; i< xz.size(); i++) {
std::cout << xz.at(i) << std::endl;
}
std::cout << "memory" <<std::endl;
}
if (column == priority) {
for (int i = 0; i<xz.size();i++){
std::string temp {};
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
}
std::sort(xz.begin(), xz.end());
for (int i = 0; i < xz_rezerv.size(); i++) {
std::string buffer = trim(xz_rezerv.at(i));
xz_rezerv.at(i).clear();
xz_rezerv.at(i).append(buffer);
buffer.clear();
}
for (int i = 0; i < xz.size(); i++) {
std::string buffer = trim(xz.at(i));
xz.at(i).clear();
xz.at(i).append(buffer);
buffer.clear();
}
std::string buffer {};
for (int i = 0; i<xz.size(); i++) {
for (int j = 0; j<xz.size(); j++) {
if (xz_rezerv.at(i).find(xz.at(j).c_str()) != std::string::npos) {
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
buffer.append(xz.at(j));
xz.at(j).clear();
xz.at(j).append(buffer);
buffer.clear();
break;
}
}
}
for (int i = 0; i< xz.size(); i++) {
std::cout << xz.at(i) << std::endl;
}
std::cout <<"priority"<< std::endl;
}
if (column == user) {
for (int i = 0; i<xz.size();i++){
std::string temp {};
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
}
std::sort(xz.begin(), xz.end());
for (int i = 0; i < xz_rezerv.size(); i++) {
std::string buffer = trim(xz_rezerv.at(i));
xz_rezerv.at(i).clear();
xz_rezerv.at(i).append(buffer);
buffer.clear();
}
for (int i = 0; i < xz.size(); i++) {
std::string buffer = trim(xz.at(i));
xz.at(i).clear();
xz.at(i).append(buffer);
buffer.clear();
}
std::string buffer {};
for (int i = 0; i<xz.size(); i++) {
for (int j = 0; j<xz.size(); j++) {
if (xz_rezerv.at(i).find(xz.at(j).c_str()) != std::string::npos) {
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
buffer.append(xz.at(j));
xz.at(j).clear();
xz.at(j).append(buffer);
buffer.clear();
break;
}
}
}
for (int i = 0; i< xz.size(); i++) {
std::cout << xz.at(i) << std::endl;
}
std::cout << "user" <<std::endl;
}
if (column == id) {
for (int i = 0; i<xz.size();i++){
std::string temp {};
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
xz.at(i).erase(0, xz.at(i).find(" ") + 1);
temp.append(trim(xz.at(i)));
xz.at(i).clear();
xz.at(i).append(temp);
temp.clear();
}
std::sort(xz.begin(), xz.end());
std::string buffer {};
for (int i = 0; i<xz.size(); i++) {
for (int j = 0; j<xz.size(); j++) {
if (xz_rezerv.at(i).find(xz.at(j).c_str()) != std::string::npos) {
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz_rezerv.at(i).substr(0, xz_rezerv.at(i).find(" ") + 1));
xz_rezerv.at(i).erase(0, xz_rezerv.at(i).find(" ") + 1);
buffer.append(xz.at(j).c_str());
xz.at(j).clear();
xz.at(j).append(buffer.c_str());
buffer.clear();
break;
}
}
}
for (int i = 0; i< xz.size(); i++) {
std::cout << xz.at(i) << std::endl;
}
std::cout << "id"<<std::endl;
}
fin.close();
fout.close();
break;
};
case (string2int("filter")): {
break;
};
case (string2int("erase")): {
if (buffer == "mainTable") break;
else {
buffer.append(".txt");
remove(buffer.c_str());
}
break;
};
case (string2int("copy")): { //copy table from mainTable to %nameOfNewTable%. example syntax: copy table2
std::ifstream fin(nameOfMainTable);
buffer.append(".txt");
std::ofstream fout(buffer, std::ios_base::trunc);
while( std::getline( fin, buffer) ) fout << buffer << std::endl;
fin.close();
fout.close();
break;
};
case (string2int("show")): { //show %tableName% in qTextBrowser. example syntax: show table1
buffer.append(".txt");
std::ifstream fin(buffer);
std::string code;
while (fin) {
std::getline(fin,buffer);
code.append(buffer);
code.append("\n");
}
ui->textBrowser->setText(code.c_str());
fin.close();
break;
};
case (string2int("append")): { //append %table2% with %table1%. example syntax: append table1,table2
std::string outputBuffer {};
std::string name = buffer.substr(0,buffer.find(','));
name.append(".txt");
std::ifstream fin(name, std::ios_base::binary);
buffer.erase(0,buffer.find(',')+1);
buffer.append(".txt");
std::ofstream fout(buffer, std::ios_base::binary | std::ios_base::app);
fout.seekp(0, std::ios_base::end);
std::getline(fin,buffer);
while (std::getline(fin, outputBuffer)) { fout << outputBuffer << std::endl; }
fin.close();
fout.close();
break;
};
default: { break;}
}
}
file.close();
mainTable.close();
}
}