void log_frame::UpdateUI()
{
std::vector<char> buf(4096);
// Get UTF-8 string from file
auto get_utf8 = [&](const fs::file& file, u64 size) -> QString
{
size = file.read(buf.data(), size);
for (u64 i = 0; i < size; i++)
{
// Get UTF-8 sequence length (no real validation performed)
const u64 tail =
(buf[i] & 0xF0) == 0xF0 ? 3 :
(buf[i] & 0xE0) == 0xE0 ? 2 :
(buf[i] & 0xC0) == 0xC0 ? 1 : 0;
if (i + tail >= size)
{ // Copying is expensive-- O(i)-- but I suspect this corruption will be exceptionally unlikely.
file.seek(i - size, fs::seek_cur);
std::vector<char> sub(&buf[0], &buf[i]);
return QString(sub.data());
}
}
return QString(buf.data());
};
const auto start = steady_clock::now();
// Check TTY logs
while (const u64 size = std::min<u64>(buf.size(), m_tty_file.size() - m_tty_file.pos()))
{
QString text = get_utf8(m_tty_file, size);
// Hackily used the state of the check.. be better if I actually stored this value.
if (m_TTYAct->isChecked())
{
text.chop(1); // remove newline since Qt automatically adds a newline.
m_tty->append(text);
}
// Limit processing time
if (steady_clock::now() >= start + 4ms || text.isEmpty()) break;
}
// Check main logs
while (const auto packet = s_gui_listener.read->next.load())
{
// Confirm log level
if (packet->sev <= s_gui_listener.enabled)
{
QString text;
switch (packet->sev)
{
case logs::level::always: break;
case logs::level::fatal: text = "F "; break;
case logs::level::error: text = "E "; break;
case logs::level::todo: text = "U "; break;
case logs::level::success: text = "S "; break;
case logs::level::warning: text = "W "; break;
case logs::level::notice: text = "! "; break;
case logs::level::trace: text = "T "; break;
default: continue;
}
// Print UTF-8 text.
text += qstr(packet->msg);
// save old log state
QScrollBar *sb = m_log->verticalScrollBar();
bool isMax = sb->value() == sb->maximum();
int sb_pos = sb->value();
int sel_pos = m_log->textCursor().position();
int sel_start = m_log->textCursor().selectionStart();
int sel_end = m_log->textCursor().selectionEnd();
// clear selection or else it will get colorized as well
QTextCursor c = m_log->textCursor();
c.clearSelection();
m_log->setTextCursor(c);
// remove the new line because Qt's append adds a new line already.
text.chop(1);
QString suffix;
bool isSame = text == m_old_text;
// create counter suffix and remove recurring line if needed
if (m_stack_log)
{
if (isSame)
{
m_log_counter++;
suffix = QString(" x%1").arg(m_log_counter);
m_log->moveCursor(QTextCursor::End, QTextCursor::MoveAnchor);
m_log->moveCursor(QTextCursor::StartOfBlock, QTextCursor::MoveAnchor);
m_log->moveCursor(QTextCursor::End, QTextCursor::KeepAnchor);
m_log->textCursor().removeSelectedText();
m_log->textCursor().deletePreviousChar();
}
else
{
m_log_counter = 1;
m_old_text = text;
}
}
// add actual log message
m_log->setTextColor(m_color[static_cast<int>(packet->sev)]);
m_log->append(text);
// add counter suffix if needed
if (m_stack_log && isSame)
{
m_log->setTextColor(m_color_stack);
m_log->insertPlainText(suffix);
}
// if we mark text from right to left we need to swap sides (start is always smaller than end)
if (sel_pos < sel_end)
{
std::swap(sel_start, sel_end);
}
// reset old text cursor and selection
c.setPosition(sel_start);
c.setPosition(sel_end, QTextCursor::KeepAnchor);
m_log->setTextCursor(c);
// set scrollbar to max means auto-scroll
sb->setValue(isMax ? sb->maximum() : sb_pos);
}
// Drop packet
s_gui_listener.pop();
// Limit processing time
if (steady_clock::now() >= start + 7ms) break;
}
}
void log_frame::UpdateUI()
{
const auto start = steady_clock::now();
// Check TTY logs
while (const u64 size = std::max<s64>(0, g_tty_size.load() - m_tty_file.pos()))
{
std::string buf;
buf.resize(size);
buf.resize(m_tty_file.read(&buf.front(), buf.size()));
if (buf.find_first_of('\0') != -1)
{
m_tty_file.seek(s64{0} - buf.size(), fs::seek_mode::seek_cur);
break;
}
if (buf.size() && m_TTYAct->isChecked())
{
QTextCursor text_cursor{m_tty->document()};
text_cursor.movePosition(QTextCursor::End);
text_cursor.insertText(qstr(buf));
}
// Limit processing time
if (steady_clock::now() >= start + 4ms || buf.empty()) break;
}
// Check main logs
while (const auto packet = s_gui_listener.read->next.load())
{
// Confirm log level
if (packet->sev <= s_gui_listener.enabled)
{
QString text;
switch (packet->sev)
{
case logs::level::always: break;
case logs::level::fatal: text = "F "; break;
case logs::level::error: text = "E "; break;
case logs::level::todo: text = "U "; break;
case logs::level::success: text = "S "; break;
case logs::level::warning: text = "W "; break;
case logs::level::notice: text = "! "; break;
case logs::level::trace: text = "T "; break;
default: continue;
}
// Print UTF-8 text.
text += qstr(packet->msg);
// save old log state
QScrollBar *sb = m_log->verticalScrollBar();
bool isMax = sb->value() == sb->maximum();
int sb_pos = sb->value();
int sel_pos = m_log->textCursor().position();
int sel_start = m_log->textCursor().selectionStart();
int sel_end = m_log->textCursor().selectionEnd();
// clear selection or else it will get colorized as well
QTextCursor c = m_log->textCursor();
c.clearSelection();
m_log->setTextCursor(c);
// remove the new line because Qt's append adds a new line already.
text.chop(1);
QString suffix;
bool isSame = text == m_old_text;
// create counter suffix and remove recurring line if needed
if (m_stack_log)
{
if (isSame)
{
m_log_counter++;
suffix = QString(" x%1").arg(m_log_counter);
m_log->moveCursor(QTextCursor::End, QTextCursor::MoveAnchor);
m_log->moveCursor(QTextCursor::StartOfBlock, QTextCursor::MoveAnchor);
m_log->moveCursor(QTextCursor::End, QTextCursor::KeepAnchor);
m_log->textCursor().removeSelectedText();
m_log->textCursor().deletePreviousChar();
}
else
{
m_log_counter = 1;
m_old_text = text;
}
}
// add actual log message
m_log->setTextColor(m_color[static_cast<int>(packet->sev)]);
m_log->append(text);
// add counter suffix if needed
if (m_stack_log && isSame)
{
m_log->setTextColor(m_color_stack);
m_log->insertPlainText(suffix);
}
// if we mark text from right to left we need to swap sides (start is always smaller than end)
if (sel_pos < sel_end)
{
std::swap(sel_start, sel_end);
}
// reset old text cursor and selection
c.setPosition(sel_start);
c.setPosition(sel_end, QTextCursor::KeepAnchor);
m_log->setTextCursor(c);
// set scrollbar to max means auto-scroll
sb->setValue(isMax ? sb->maximum() : sb_pos);
}
// Drop packet
s_gui_listener.pop();
// Limit processing time
if (steady_clock::now() >= start + 7ms) break;
}
}
