Method removeInEachLineOfSelection

src/Editor/CodeEditor.cpp:1262–1322

}

bool CodeEditor::removeInEachLineOfSelection(const QRegularExpression &regex, bool force)
{
    auto cursor = textCursor();
    auto lines = toPlainText().remove('\r').split('\n');
    int selectionStart = cursor.selectionStart();
    int selectionEnd = cursor.selectionEnd();
    bool cursorAtEnd = cursor.position() == selectionEnd;
    cursor.setPosition(selectionStart);
    int lineStart = cursor.blockNumber();
    cursor.setPosition(selectionEnd);
    int lineEnd = cursor.blockNumber();
    QString newText;
    QTextStream stream(&newText);
    int deleteTotal = 0;
    int deleteFirst = 0;
    for (int i = lineStart; i <= lineEnd; ++i)
    {
        auto line = lines[i];
        auto match = regex.match(line).captured(1);
        int len = match.length();
        if (len == 0 && !force)
            return false;
        if (i == lineStart)
            deleteFirst = len;
        deleteTotal += len;
        stream << line.remove(line.indexOf(match), len);
        if (i != lineEnd)
            stream << Qt::endl;
    }
    cursor.movePosition(QTextCursor::Start);
    cursor.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, lineStart);
    cursor.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor, lineEnd - lineStart);
    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    cursor.insertText(newText);
    cursor.setPosition(qMax(0, selectionStart - deleteFirst));
    if (cursor.blockNumber() < lineStart)
    {
        cursor.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, lineStart - cursor.blockNumber());
        cursor.movePosition(QTextCursor::StartOfBlock);
    }
    int pos = cursor.position();
    cursor.setPosition(selectionEnd - deleteTotal);
    if (cursor.blockNumber() < lineEnd)
    {
        cursor.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, lineEnd - cursor.blockNumber());
        cursor.movePosition(QTextCursor::StartOfBlock);
    }
    int pos2 = cursor.position();
    if (cursorAtEnd)
    {
        cursor.setPosition(pos);
        cursor.setPosition(pos2, QTextCursor::KeepAnchor);
    }
    else
    {
        cursor.setPosition(pos2);
        cursor.setPosition(pos, QTextCursor::KeepAnchor);
    }