diff options
| -rw-r--r-- | editor.cpp | 27 |
1 files changed, 16 insertions, 11 deletions
@@ -14,6 +14,10 @@ Editor::Editor(std::vector<std::string>* contents, const std::string& filename): int Editor::run_editor() { while (!m_stopped) { + if (m_contents->size() == 0) { + m_contents->push_back(""); + } + print_contents_on_line(m_current_line); char input = Utils::getch(); @@ -53,26 +57,27 @@ int Editor::run_editor() { int Editor::print_contents_on_line(int line) const { Utils::clear_screen(); - int output_length = m_contents->size(); - bool truncated = false; - int line_max = std::max(Utils::window_height() - 4, 0); + int file_length = m_contents->size(); + int line_diff = Utils::window_height() / 2 - 2; + int start_line = std::max(0, line - line_diff); + int end_line = std::max(0, std::min(file_length - 1, line + line_diff)); int line_number_width = Utils::count_digits(m_contents->size()); - if ((int) m_contents->size() > line + line_max) { - output_length = line + line_max; - truncated = true; - } - - if (line != 0) { + if (start_line != 0) { std::cout << "...\n"; } - for (int i = line; i < output_length; i++) { + for (int i = start_line; i <= end_line; i++) { + if (i == line) { + std::cout << "> "; + } + std::cout << std::setw(line_number_width) << i; std::cout << " " << m_contents->at(i) << '\n'; } - if (truncated) { + + if (end_line != file_length - 1) { std::cout << "...\n"; } |