289 lines
9.7 KiB
C++
289 lines
9.7 KiB
C++
#include "highlighters.hh"
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#include "assert.hh"
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#include "window.hh"
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#include "display_buffer.hh"
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#include "highlighter_registry.hh"
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#include "highlighter_group.hh"
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#include <boost/regex.hpp>
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namespace Kakoune
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{
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void colorize_regex_range(DisplayBuffer& display_buffer,
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const BufferIterator& range_begin,
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const BufferIterator& range_end,
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const boost::regex& ex,
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Color fg_color, Color bg_color = Color::Default)
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{
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assert(range_begin <= range_end);
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if (range_begin >= display_buffer.back().end() or
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range_end <= display_buffer.front().begin())
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return;
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BufferIterator display_begin = std::max(range_begin,
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display_buffer.front().begin());
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BufferIterator display_end = std::min(range_end,
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display_buffer.back().end());
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boost::regex_iterator<BufferIterator> re_it(display_begin, display_end,
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ex, boost::match_nosubs);
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boost::regex_iterator<BufferIterator> re_end;
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DisplayBuffer::iterator atom_it = display_buffer.begin();
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for (; re_it != re_end; ++re_it)
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{
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BufferIterator begin = (*re_it)[0].first;
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BufferIterator end = (*re_it)[0].second;
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assert(begin != end);
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auto begin_atom_it = display_buffer.atom_containing(begin, atom_it);
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assert(begin_atom_it != display_buffer.end());
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if (begin_atom_it->begin() != begin)
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begin_atom_it = ++display_buffer.split(begin_atom_it, begin);
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auto end_atom_it = display_buffer.atom_containing(end, begin_atom_it);
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if (end_atom_it != display_buffer.end() and
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end_atom_it->begin() != end)
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end_atom_it = ++display_buffer.split(end_atom_it, end);
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assert(begin_atom_it != end_atom_it);
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for (auto it = begin_atom_it; it != end_atom_it; ++it)
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{
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it->fg_color() = fg_color;
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it->bg_color() = bg_color;
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}
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atom_it = end_atom_it;
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}
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}
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void colorize_regex(DisplayBuffer& display_buffer,
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const boost::regex& ex,
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Color fg_color, Color bg_color = Color::Default)
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{
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colorize_regex_range(display_buffer, display_buffer.front().begin(),
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display_buffer.back().end(), ex, fg_color, bg_color);
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}
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Color parse_color(const std::string& color)
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{
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if (color == "default") return Color::Default;
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if (color == "black") return Color::Black;
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if (color == "red") return Color::Red;
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if (color == "green") return Color::Green;
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if (color == "yellow") return Color::Yellow;
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if (color == "blue") return Color::Blue;
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if (color == "magenta") return Color::Magenta;
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if (color == "cyan") return Color::Cyan;
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if (color == "white") return Color::White;
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return Color::Default;
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}
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HighlighterAndId colorize_regex_factory(Window& window,
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const HighlighterParameters params)
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{
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if (params.size() != 3)
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throw runtime_error("wrong parameter count");
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boost::regex ex(params[0]);
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Color fg_color = parse_color(params[1]);
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Color bg_color = parse_color(params[2]);
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std::string id = "colre'" + params[0] + "'";
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return HighlighterAndId(id, std::bind(colorize_regex, std::placeholders::_1,
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ex, fg_color, bg_color));
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}
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void expand_tabulations(DisplayBuffer& display_buffer)
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{
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const int tabstop = 8;
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for (auto atom_it = display_buffer.begin();
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atom_it != display_buffer.end(); ++atom_it)
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{
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for (BufferIterator it = atom_it->begin(); it != atom_it->end(); ++it)
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{
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if (*it == '\t')
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{
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if (it != atom_it->begin())
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atom_it = ++display_buffer.split(atom_it, it);
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if (it+1 != atom_it->end())
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atom_it = display_buffer.split(atom_it, it+1);
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BufferCoord pos = it.buffer().line_and_column_at(it);
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int column = 0;
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for (auto line_it = it.buffer().iterator_at({pos.line, 0});
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line_it != it; ++line_it)
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{
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assert(*line_it != '\n');
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if (*line_it == '\t')
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column += tabstop - (column % tabstop);
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else
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++column;
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}
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int count = tabstop - (column % tabstop);
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display_buffer.replace_atom_content(atom_it,
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std::string(count, ' '));
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}
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}
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}
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}
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void show_line_numbers(DisplayBuffer& display_buffer)
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{
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const Buffer& buffer = display_buffer.front().begin().buffer();
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BufferCoord coord = buffer.line_and_column_at(display_buffer.begin()->begin());
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int last_line = buffer.line_and_column_at(display_buffer.back().end()-1).line;
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for (; coord.line <= last_line; ++coord.line)
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{
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BufferIterator line_start = buffer.iterator_at(coord);
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DisplayBuffer::iterator atom_it = display_buffer.atom_containing(line_start);
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if (atom_it != display_buffer.end())
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{
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if (atom_it->begin() != line_start)
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{
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if (not atom_it->splitable())
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continue;
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atom_it = ++display_buffer.split(atom_it, line_start);
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}
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atom_it = display_buffer.insert(
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atom_it,
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DisplayAtom(atom_it->coord(),
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atom_it->begin(), atom_it->begin(),
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Color::Black, Color::White));
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char buffer[6];
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snprintf(buffer, 6, "%3d ", coord.line + 1);
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display_buffer.replace_atom_content(atom_it, buffer);
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}
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}
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}
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template<void (*highlighter_func)(DisplayBuffer&)>
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class SimpleHighlighterFactory
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{
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public:
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SimpleHighlighterFactory(const std::string& id) : m_id(id) {}
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HighlighterAndId operator()(Window& window,
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const HighlighterParameters& params) const
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{
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return HighlighterAndId(m_id, HighlighterFunc(highlighter_func));
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}
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private:
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std::string m_id;
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};
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class SelectionsHighlighter
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{
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public:
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SelectionsHighlighter(Window& window)
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: m_window(window)
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{
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}
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void operator()(DisplayBuffer& display_buffer)
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{
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SelectionList sorted_selections = m_window.selections();
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std::sort(sorted_selections.begin(), sorted_selections.end(),
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[](const Selection& lhs, const Selection& rhs) { return lhs.begin() < rhs.begin(); });
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auto atom_it = display_buffer.begin();
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auto sel_it = sorted_selections.begin();
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while (atom_it != display_buffer.end()
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and sel_it != sorted_selections.end())
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{
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Selection& sel = *sel_it;
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DisplayAtom& atom = *atom_it;
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// [###------]
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if (atom.begin() >= sel.begin() and atom.begin() < sel.end() and atom.end() > sel.end())
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{
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atom_it = display_buffer.split(atom_it, sel.end());
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atom_it->attribute() |= Attributes::Underline;
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++atom_it;
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++sel_it;
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}
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// [---###---]
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else if (atom.begin() < sel.begin() and atom.end() > sel.end())
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{
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atom_it = display_buffer.split(atom_it, sel.begin());
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atom_it = display_buffer.split(++atom_it, sel.end());
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atom_it->attribute() |= Attributes::Underline;
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++atom_it;
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++sel_it;
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}
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// [------###]
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else if (atom.begin() < sel.begin() and atom.end() > sel.begin())
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{
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atom_it = ++display_buffer.split(atom_it, sel.begin());
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atom_it->attribute() |= Attributes::Underline;
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++atom_it;
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}
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// [#########]
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else if (atom.begin() >= sel.begin() and atom.end() <= sel.end())
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{
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atom_it->attribute() |= Attributes::Underline;
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++atom_it;
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}
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// [---------]
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else if (atom.begin() >= sel.end())
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++sel_it;
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// [---------]
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else if (atom.end() <= sel.begin())
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++atom_it;
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else
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assert(false);
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}
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boost::regex ex("\n");
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for (auto& sel : sorted_selections)
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colorize_regex_range(display_buffer, sel.begin(), sel.end(),
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ex, Color::Default, Color::Yellow);
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}
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static HighlighterAndId create(Window& window,
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const HighlighterParameters& params)
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{
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return HighlighterAndId("highlight_selections",
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SelectionsHighlighter(window));
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}
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private:
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const Window& m_window;
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};
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HighlighterAndId highlighter_group_factory(Window& window,
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const HighlighterParameters& params)
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{
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if (params.size() != 1)
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throw runtime_error("wrong parameter count");
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return HighlighterAndId(params[0], HighlighterGroup());
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}
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void register_highlighters()
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{
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HighlighterRegistry& registry = HighlighterRegistry::instance();
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registry.register_factory("highlight_selections", SelectionsHighlighter::create);
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registry.register_factory("expand_tabs", SimpleHighlighterFactory<expand_tabulations>("expand_tabs"));
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registry.register_factory("number_lines", SimpleHighlighterFactory<show_line_numbers>("number_lines"));
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registry.register_factory("regex", colorize_regex_factory);
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registry.register_factory("group", highlighter_group_factory);
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}
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}
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