void MainWindow::openDB(const QString &openDBName, bool useCP1250)
{
if (openDBName.isNull())
return;
this->setEnabled(false); qApp->processEvents();
try {
QFile file(openDBName);
if (!file.open(QFile::ReadOnly | QFile::Text)) {
QMessageBox::critical(this, tr("Open database"), tr("Cannot read file %1:\n%2.").arg(openDBName).arg(file.errorString()));
this->setEnabled(true); return;
}
setProgress(3); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
QTextStream rfile(&file);
if (useCP1250) {
rfile.setCodec("CP 1250");
} else {
rfile.setCodec("UTF-8");
}
QString db_buffer;
QStringList bufferlist;
// ---------------------------------------------------------------------
if (rfile.readLine() != "[ITEST_VERSION]") { throw xInvalidDBFile(0); }
rfile.readLine();
if (rfile.readLine() != "[ITEST_DB_VERSION]") { throw xInvalidDBFile(1); }
double db_version = rfile.readLine().toDouble();
if (db_version > F_ITDB_VERSION) {
QMessageBox::critical(this, tr("iTest version notice"), tr("You need a newer version of iTest to open this database file."));
this->setEnabled(true);
return;
}
if (!useCP1250) {
if (db_version == 1.0) {
openDB(openDBName, true);
return;
}
}
if (rfile.readLine() != "[DB_NAME]") { throw xInvalidDBFile(10); }
// Database name
QString db_name = rfile.readLine();
if (rfile.readLine() != "[DB_DATE]") { throw xInvalidDBFile(12); }
// Database date
QString db_date = rfile.readLine();
if (rfile.readLine() != "[DB_DATE_ULSD]") { throw xInvalidDBFile(14); }
// Use last save date
rfile.readLine();
if (rfile.readLine() != "[DB_COMMENTS]") { throw xInvalidDBFile(16); }
// Database comments
QString db_comments = rfile.readLine();
if (rfile.readLine() != "[DB_QNUM]") { throw xInvalidDBFile(18); }
// Question number
int db_qnum = rfile.readLine().toInt();
if (rfile.readLine() != "[DB_SNUM]") { throw xInvalidDBFile(20); }
// Number of saved sessions
int db_snum = rfile.readLine().toInt();
int db_cnum = 0;
if (db_version >= 1.35) {
if (rfile.readLine() != "[DB_CNUM]") { throw xInvalidDBFile(22); }
// Number of classes
db_cnum = rfile.readLine().toInt();
}
if (rfile.readLine() != "[DB_FLAGS]") { throw xInvalidDBFile(50); }
setProgress(6); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Categories enabled
db_buffer = rfile.readLine();
QVector<bool> db_categories_enabled(db_buffer.length());
for (int i = 0; i < db_categories_enabled.size(); ++i) {
if (db_buffer.at(i) == '+') {
db_categories_enabled[i] = true;
} else if (db_buffer.at(i) == '-') {
db_categories_enabled[i] = false;
} else {
throw xInvalidDBFile(52);
}
}
// Categories
QVector<QString> db_categories(db_buffer.length());
for (int i = 0; i < db_categories.size(); ++i) {
if (rfile.readLine() != QString("[DB_F%1]").arg(i)) { throw xInvalidDBFile(54); }
db_categories[i] = rfile.readLine();
}
// End of categories
if (rfile.readLine() != "[DB_FLAGS_END]") { throw xInvalidDBFile(59); }
setProgress(10); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
int count = db_qnum + db_snum;
// Questions
QuestionItem *item;
QStringList answers;
for (int i = 0; i < db_qnum; ++i) {
answers.clear();
// Question name
if (rfile.readLine() != "[Q_NAME]") { throw xInvalidDBFile(100); }
item = new QuestionItem (rfile.readLine());
// Category
if (rfile.readLine() != "[Q_FLAG]") { throw xInvalidDBFile(102); }
item->setCategory(rfile.readLine().toInt());
if (db_version >= 1.2) {
// Question group
if (rfile.readLine() != "[Q_GRP]") { throw xInvalidDBFile(104); }
item->setGroup(rfile.readLine());
}
// Difficulty
if (db_version >= 1.2) {
if (rfile.readLine() != "[Q_DIF]") { throw xInvalidDBFile(106); }
} else {
if (rfile.readLine() != "[Q_DIFFICULTY]") { throw xInvalidDBFile(108); }
}
item->setDifficulty(rfile.readLine().toInt());
// Question text
if (rfile.readLine() != "[Q_TEXT]") { throw xInvalidDBFile(110); }
item->setText(rfile.readLine());
if (db_version >= 1.35) {
// Answers
if (rfile.readLine() != "[Q_ANS]") { throw xInvalidDBFile(112); }
item->setSelectionType((Question::SelectionType)rfile.readLine().toInt());
item->setCorrectAnswers((Question::Answer)rfile.readLine().toInt());
int numanswers = rfile.readLine().toInt();
for (int a = 0; a < numanswers; ++a) { answers << rfile.readLine(); }
// Explanation
if (rfile.readLine() != "[Q_EXPL]") { throw xInvalidDBFile(114); }
item->setExplanation(rfile.readLine());
} else {
// Answer A
if (rfile.readLine() != "[Q_ANSA]") { throw xInvalidDBFile(116); }
answers << rfile.readLine();
if (db_version < 1.2) {
if (rfile.readLine() != "[Q_ANSA_C]") { throw xInvalidDBFile(118); }
}
item->setAnswerCorrect(Question::A, rfile.readLine() == "true");
// Answer B
if (rfile.readLine() != "[Q_ANSB]") { throw xInvalidDBFile(120); }
answers << rfile.readLine();
if (db_version < 1.2) {
if (rfile.readLine() != "[Q_ANSB_C]") { throw xInvalidDBFile(122); }
}
item->setAnswerCorrect(Question::B, rfile.readLine() == "true");
// Answer C
if (rfile.readLine() != "[Q_ANSC]") { throw xInvalidDBFile(124); }
answers << rfile.readLine();
if (db_version < 1.2) {
if (rfile.readLine() != "[Q_ANSC_C]") { throw xInvalidDBFile(126); }
}
item->setAnswerCorrect(Question::C, rfile.readLine() == "true");
// Answer D
if (rfile.readLine() != "[Q_ANSD]") { throw xInvalidDBFile(128); }
answers << rfile.readLine();
if (db_version < 1.2) {
if (rfile.readLine() != "[Q_ANSD_C]") { throw xInvalidDBFile(130); }
}
item->setAnswerCorrect(Question::D, rfile.readLine() == "true");
}
// Statistics
if (db_version < 1.2) {
if (rfile.readLine() != "[Q_ICNT]") { throw xInvalidDBFile(132); }
} else {
if (rfile.readLine() != "[Q_ICCNT]") { throw xInvalidDBFile(134); }
}
item->setIncorrectAnsCount(rfile.readLine().toUInt());
if (db_version < 1.2) {
if (rfile.readLine() != "[Q_CCNT]") { throw xInvalidDBFile(136); }
}
item->setCorrectAnsCount(rfile.readLine().toUInt());
// Hidden
if (db_version >= 1.2) {
if (rfile.readLine() != "[Q_HID]") { throw xInvalidDBFile(138); }
item->setHidden(rfile.readLine() == "true");
}
if (db_version > 1.25) {
// SVG
if (rfile.readLine() != "[Q_SVG]") { throw xInvalidDBFile(140); }
int numsvgitems = rfile.readLine().toInt();
for (int g = 0; g < numsvgitems; ++g) {
db_buffer = rfile.readLine();
item->addSvgItem(new SvgItem(db_buffer, rfile.readLine()));
}
}
// End
if (db_version < 1.25) {
if (rfile.readLine() != "[Q_END]") { throw xInvalidDBFile(199); }
}
// Add map entry
item->setAnswers(answers);
QListWidgetItem *q_item = new QListWidgetItem (item->group().isEmpty() ? item->name() : QString("[%1] %2").arg(item->group()).arg(item->name()));
LQListWidget->addItem(q_item);
current_db_questions.insert(q_item, item);
setQuestionItemIcon(q_item, item->difficulty());
setQuestionItemColour(q_item, item->category());
hideQuestion(q_item, item);
setProgress((85/(i+1)*count)+10); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>
}
// Saved sessions
int ans_category = -1;
int ans_dif = 0;
Question::Answer c_ans;
Question::Answer ans;
Question::SelectionType ans_selectiontype = Question::SingleSelection;
for (int i = 0; i < db_snum; ++i) {
if (rfile.atEnd())
break;
if (rfile.readLine() != "[SESSION]")
continue;
Session *session = new Session;
session->setName(rfile.readLine());
session->setDateTimeFromString(rfile.readLine());
if (db_version >= 1.2) {
if (rfile.readLine() != "[PASSMARK]") { throw xInvalidDBFile(202); }
PassMark pm(rfile.readLine().toInt());
int pm_count = rfile.readLine().toInt();
int pm_c, pm_v;
for (int i = 0; i < pm_count; ++i) {
pm_c = rfile.readLine().toInt();
pm_v = rfile.readLine().toInt();
pm.addCondition(pm_c, pm_v, pm_v);
}
session->setPassMark(pm);
} else {
session->setPassMark(PassMark(rfile.readLine().toInt()));
}
ScoringSystem sys;
if (db_version >= 1.35) {
db_buffer = rfile.readLine(); db_buffer.append("\n");
db_buffer.append(rfile.readLine()); db_buffer.append("\n");
db_buffer.append(rfile.readLine());
sys.loadData(db_buffer);
}
int s_snum = rfile.readLine().toInt();
int s_lenum = rfile.readLine().toInt();
for (int le = 0; le < s_lenum; ++le) {
bufferlist.clear();
bufferlist = rfile.readLine().split(';');
if (bufferlist.count() == 6) {
session->addLogEntry(bufferlist.at(0).toInt(),
bufferlist.at(1).toInt(),
bufferlist.at(2).toInt(),
bufferlist.at(3).toInt(),
bufferlist.at(4).toInt(),
bufferlist.at(5).toInt(),
rfile.readLine());
} else {
session->addLogEntry(255, 255, 255, 0, 0, 0, rfile.readLine());
}
}
for (int s = 0; s < s_snum; ++s) {
if (rfile.atEnd())
break;
if (rfile.readLine() != "[STUDENT]")
continue;
Student *student = new Student(rfile.readLine());
student->setReady(rfile.readLine() == "true");
if (db_version >= 1.2) {
student->setPassed(rfile.readLine() == "true");
}
student->setNumber(rfile.readLine().toInt());
if (db_version < 1.35) {
rfile.readLine(); // SCORE
}
int numresults = rfile.readLine().toInt();
QMap<QString, QuestionAnswer> *results = new QMap<QString, QuestionAnswer>;
for (int a = 0; a < numresults; ++a) {
db_buffer = rfile.readLine();
if (db_version >= 1.2) {
ans_category = rfile.readLine().toInt();
}
QuestionItem *item = NULL;
QMapIterator<QListWidgetItem *, QuestionItem *> q(current_db_questions);
while (q.hasNext()) { q.next();
if (q.value()->name() == db_buffer) {
item = q.value();
break;
}
}
if (db_version >= 1.35) {
ans_dif = rfile.readLine().toInt();
ans_selectiontype = (Question::SelectionType)rfile.readLine().toInt();
} else {
if (item == NULL) {
if (db_version < 1.2) {
ans_category = -1;
}
if (db_version < 1.35) {
ans_dif = 0;
ans_selectiontype = Question::SingleSelection;
}
} else {
if (db_version < 1.2) {
ans_category = item->category();
}
if (db_version < 1.35) {
ans_dif = item->difficulty();
ans_selectiontype = item->selectionType();
}
}
}
if (db_version < 1.27) {
ans = Question::convertOldAnsNumber(rfile.readLine().toInt());
c_ans = Question::convertOldAnsNumber(rfile.readLine().toInt());
} else {
ans = (Question::Answer)rfile.readLine().toInt();
c_ans = (Question::Answer)rfile.readLine().toInt();
}
QuestionAnswer qans(c_ans, ans, item ? item->numAnswers() : 9, ans_category, ans_dif, ans_selectiontype);
results->insert(db_buffer, qans);
}
student->setResults(results);
student->updateScore(sys);
if (db_version < 1.2) {
student->setPassed(session->passMark().check(student->results(), ¤t_db_questions, sys));
}
session->addStudent(student);
}
session->setScoringSystem(sys);
current_db_sessions.insert(session->dateTime(), session);
QListWidgetItem *item = new QListWidgetItem (QString("%1 - %2").arg(session->dateTimeToString()).arg(session->name()));
SVLSListWidget->insertItem(0, item);
item->setData(Qt::UserRole, session->dateTime());
setProgress((85/(db_qnum+i+1)*count)+10); // PROGRESS >>>>>>>>>>>>>>
}
// Classes
for (int i = 0; i < db_cnum; ++i) {
if (rfile.atEnd())
break;
if (rfile.readLine() != "[CLASS]")
continue;
Class *cl = new Class(rfile.readLine());
bufferlist = rfile.readLine().split("-", QString::SkipEmptyParts);
cl->setFirstYear(bufferlist.at(0).toInt());
cl->setLastYear(bufferlist.at(1).toInt());
QStringList cl_sessions = rfile.readLine().split(";", QString::SkipEmptyParts);
for (int s = 0; s < cl_sessions.count(); ++s) {
cl->addSession(cl_sessions.at(s));
}
int mnum = rfile.readLine().toInt();
for (int m = 0; m < mnum; ++m) {
if (rfile.readLine() != "[MEM]")
continue;
ClassMember *mem = new ClassMember(rfile.readLine());
int msnum = rfile.readLine().toInt();
for (int ms = 0; ms < msnum; ++ms) {
db_buffer = rfile.readLine();
mem->addSession(db_buffer, rfile.readLine().toInt());
}
cl->addMember(mem);
}
QListWidgetItem *cl_item = new QListWidgetItem(QString("%1-%2: %3").arg(cl->firstYear()).arg(cl->lastYear()).arg(cl->name()), CLLCListWidget);
current_db_classes.insert(cl_item, cl);
}
ECTextEdit->setHtml( db_comments );
// Set categories
current_db_categories_enabled = db_categories_enabled;
current_db_categories = db_categories;
setProgress(97); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Apply categories
setCategories(); loadCategories();
setProgress(98); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Enable All
setAllEnabled(true);
setProgress(99); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// Save values
current_db_file = openDBName;
current_db_comments = db_comments;
current_db_open = true;
#ifdef Q_OS_MAC
this->setWindowTitle(QString("%1[*]").arg(currentDatabaseName()));
#else
this->setWindowTitle(QString("%1[*] - iTestServer").arg(currentDatabaseName()));
#endif
this->setWindowModified(false);
statusBar()->showMessage(tr("Database open"), 10000);
setProgress(100); setProgress(-1); // PROGRESS >>>>>>>>>>>>>>>>>>>>>>>>>
actionEdit_questions->setChecked(true);
mainStackedWidget->setCurrentIndex(1);
// ---------------------------------------------------------------------
this->setEnabled(true);
}
catch (xInvalidDBFile e) {
errorInvalidDBFile(tr("Open database"), openDBName, e.error());
}
catch (...) {
QMessageBox::critical(this, tr("iTestServer"), tr("Error opening database."));
clearAll(); setAllEnabled(false); current_db_open = false;
this->setWindowTitle(tr("iTestServer"));
this->setWindowModified(false); setProgress(-1);
mainStackedWidget->setCurrentIndex(0);
this->setEnabled(true);
}
}
void Client::loadResults(QString input)
{
QTextStream in(&input);
QString buffer;
QuestionItem *item;
Question::Answer ans;
c_score = 0;
c_maxscore = 0;
do {
item = NULL;
if (in.readLine() != "[Q_NAME]")
return;
buffer = in.readLine();
QMapIterator<QListWidgetItem *, QuestionItem *> i(c_parent->current_db_questions);
while (i.hasNext()) { i.next();
if (i.value()->name() == buffer) {
item = i.value();
break;
}
}
if (item == NULL) {
in.readLine();
in.readLine();
continue;
}
if (in.readLine() != "[Q_ANSWERED]")
return;
ans = (Question::Answer)in.readLine().toInt();
QuestionAnswer qans(item->correctAnswer(), ans, item->numAnswers(), item->category(), item->difficulty(), item->selectionType(), item->explanation());
c_results->insert(item->name(), qans);
c_score += qans.score(c_parent->current_db_scoringsystem);
c_maxscore += qans.maximumScore(c_parent->current_db_scoringsystem);
if (c_score > 0.0) {
item->addCorrectAns();
} else {
item->addIncorrectAns();
}
} while (!in.atEnd());
c_passed = c_parent->current_db_passmark.check(c_results, &c_parent->current_db_questions, c_parent->current_db_scoringsystem);
c_ready = true;
emit resultsLoaded(this);
}