702 lines
22 KiB
C++
702 lines
22 KiB
C++
#include "window.hh"
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#include "buffer.hh"
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#include "file.hh"
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#include "command_manager.hh"
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#include "buffer_manager.hh"
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#include "register_manager.hh"
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#include "selectors.hh"
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#include "assert.hh"
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#include "debug.hh"
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#include "filters.hh"
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#include "filter_registry.hh"
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#include <unordered_map>
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#include <map>
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#include <sstream>
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#include <ncurses.h>
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using namespace Kakoune;
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using namespace std::placeholders;
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void set_attribute(int attribute, bool on)
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{
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if (on)
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attron(attribute);
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else
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attroff(attribute);
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}
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int nc_color(Color color)
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{
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switch (color)
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{
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case Color::Black: return COLOR_BLACK;
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case Color::Red: return COLOR_RED;
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case Color::Green: return COLOR_GREEN;
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case Color::Yellow: return COLOR_YELLOW;
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case Color::Blue: return COLOR_BLUE;
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case Color::Magenta: return COLOR_MAGENTA;
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case Color::Cyan: return COLOR_CYAN;
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case Color::White: return COLOR_WHITE;
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case Color::Default:
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default:
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return COLOR_BLACK;
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}
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}
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void set_color(Color fg_color, Color bg_color)
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{
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static std::map<std::pair<Color, Color>, int> colorpairs;
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static int current_pair = -1;
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static int next_pair = 1;
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if (current_pair != -1)
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attroff(COLOR_PAIR(current_pair));
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if (fg_color == Color::Default and bg_color == Color::Default)
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return;
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std::pair<Color, Color> colorpair(fg_color, bg_color);
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auto it = colorpairs.find(colorpair);
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if (it != colorpairs.end())
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{
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current_pair = it->second;
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attron(COLOR_PAIR(it->second));
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}
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else
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{
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init_pair(next_pair, nc_color(fg_color), nc_color(bg_color));
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colorpairs[colorpair] = next_pair;
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current_pair = next_pair;
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attron(COLOR_PAIR(next_pair));
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++next_pair;
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}
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}
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void draw_window(Window& window)
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{
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int max_x,max_y;
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getmaxyx(stdscr, max_y, max_x);
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max_y -= 1;
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window.set_dimensions(DisplayCoord(max_y, max_x));
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window.update_display_buffer();
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DisplayCoord position;
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for (const DisplayAtom& atom : window.display_buffer())
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{
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assert(position == atom.coord());
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const std::string content = atom.content();
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set_attribute(A_UNDERLINE, atom.attribute() & Underline);
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set_attribute(A_REVERSE, atom.attribute() & Reverse);
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set_attribute(A_BLINK, atom.attribute() & Blink);
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set_attribute(A_BOLD, atom.attribute() & Bold);
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set_color(atom.fg_color(), atom.bg_color());
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size_t pos = 0;
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size_t end;
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while (true)
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{
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move(position.line, position.column);
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clrtoeol();
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end = content.find_first_of('\n', pos);
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std::string line = content.substr(pos, end - pos);
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addstr(line.c_str());
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if (end != std::string::npos)
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{
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addch(' ');
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position.line = position.line + 1;
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position.column = 0;
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pos = end + 1;
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if (position.line >= max_y)
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break;
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}
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else
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{
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position.column += line.length();
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break;
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}
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}
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if (position.line >= max_y)
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break;
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}
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set_attribute(A_UNDERLINE, 0);
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set_attribute(A_REVERSE, 0);
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set_attribute(A_BLINK, 0);
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set_attribute(A_BOLD, 0);
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set_color(Color::Blue, Color::Black);
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while (++position.line < max_y)
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{
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move(position.line, 0);
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clrtoeol();
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addch('~');
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}
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set_color(Color::Cyan, Color::Black);
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std::string status_line = window.status_line();
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move(max_y, max_x - status_line.length());
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clrtoeol();
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addstr(status_line.c_str());
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const DisplayCoord& cursor_position = window.cursor_position();
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move(cursor_position.line, cursor_position.column);
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}
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void init_ncurses()
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{
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initscr();
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cbreak();
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noecho();
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nonl();
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intrflush(stdscr, false);
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keypad(stdscr, true);
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curs_set(2);
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start_color();
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ESCDELAY=25;
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}
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void deinit_ncurses()
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{
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endwin();
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}
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struct prompt_aborted {};
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std::string prompt(const std::string& text, Completer completer = complete_nothing)
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{
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int max_x, max_y;
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getmaxyx(stdscr, max_y, max_x);
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move(max_y-1, 0);
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addstr(text.c_str());
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clrtoeol();
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std::string result;
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size_t cursor_pos = 0;
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Completions completions;
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int current_completion = -1;
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std::string text_before_completion;
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while (true)
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{
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char c = getch();
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switch (c)
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{
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case '\r':
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return result;
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case 4:
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if (cursor_pos > 0)
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--cursor_pos;
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break;
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case 5:
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if (cursor_pos < result.length())
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++cursor_pos;
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break;
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case 7:
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if (cursor_pos != 0)
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{
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result = result.substr(0, cursor_pos - 1)
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+ result.substr(cursor_pos, std::string::npos);
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--cursor_pos;
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}
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current_completion = -1;
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break;
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case 27:
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throw prompt_aborted();
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case '\t':
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{
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if (current_completion == -1)
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{
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completions = completer(result, cursor_pos);
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if (completions.candidates.empty())
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break;
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text_before_completion = result.substr(completions.start,
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completions.end - completions.start);
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}
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++current_completion;
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std::string completion;
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if (current_completion >= completions.candidates.size())
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{
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if (current_completion == completions.candidates.size() and
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std::find(completions.candidates.begin(), completions.candidates.end(), text_before_completion) == completions.candidates.end())
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completion = text_before_completion;
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else
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{
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current_completion = 0;
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completion = completions.candidates[0];
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}
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}
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else
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completion = completions.candidates[current_completion];
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move(max_y-1, text.length());
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result = result.substr(0, completions.start) + completion;
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cursor_pos = completions.start + completion.length();
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break;
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}
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default:
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current_completion = -1;
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result = result.substr(0, cursor_pos) + c + result.substr(cursor_pos, std::string::npos);
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++cursor_pos;
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}
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move(max_y - 1, text.length());
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clrtoeol();
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addstr(result.c_str());
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move(max_y - 1, text.length() + cursor_pos);
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refresh();
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}
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return result;
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}
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void print_status(const std::string& status)
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{
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int x,y;
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getmaxyx(stdscr, y, x);
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move(y-1, 0);
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clrtoeol();
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addstr(status.c_str());
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}
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void do_insert(Window& window, IncrementalInserter::Mode mode)
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{
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Kakoune::IncrementalInserter inserter(window, mode);
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draw_window(window);
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while(true)
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{
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const DisplayCoord& pos = window.cursor_position();
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move(pos.line, pos.column);
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char c = getch();
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switch (c)
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{
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case 27:
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return;
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case 2:
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c = getch();
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if (c >= '0' and c <= '9')
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inserter.insert_capture(c - '0');
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break;
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case 4:
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inserter.move_cursor({0, -1});
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break;
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case 5:
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inserter.move_cursor({0, 1});
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break;
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case 7:
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inserter.erase();
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break;
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case '\r':
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c = '\n';
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default:
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inserter.insert(std::string() + c);
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}
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draw_window(window);
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}
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window.clear_selections();
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}
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template<bool append>
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void do_go(Window& window, int count)
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{
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if (count != 0)
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{
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BufferIterator target =
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window.buffer().iterator_at(BufferCoord(count-1, 0));
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window.move_cursor_to(target);
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}
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else
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{
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char c = getch();
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switch (c)
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{
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case 'g':
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case 't':
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{
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BufferIterator target =
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window.buffer().iterator_at(BufferCoord(0,0));
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window.move_cursor_to(target);
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break;
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}
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case 'l':
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case 'L':
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window.select(select_to_eol, append);
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break;
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case 'h':
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case 'H':
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window.select(select_to_eol_reverse, append);
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break;
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case 'b':
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{
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BufferIterator target = window.buffer().iterator_at(
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BufferCoord(window.buffer().line_count() - 1, 0));
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window.move_cursor_to(target);
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break;
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}
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}
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}
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}
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Window* current_window;
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Buffer* open_or_create(const std::string& filename)
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{
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Buffer* buffer = NULL;
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try
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{
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buffer = create_buffer_from_file(filename);
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}
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catch (file_not_found& what)
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{
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print_status("new file " + filename);
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buffer = new Buffer(filename, Buffer::Type::File);
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}
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return buffer;
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}
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void edit(const CommandParameters& params)
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{
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if (params.size() != 1)
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throw wrong_argument_count();
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std::string filename = params[0];
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current_window = open_or_create(filename)->get_or_create_window();
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}
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void write_buffer(const CommandParameters& params)
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{
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if (params.size() > 1)
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throw wrong_argument_count();
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Buffer& buffer = current_window->buffer();
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std::string filename = params.empty() ? buffer.name() : params[0];
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write_buffer_to_file(buffer, filename);
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buffer.notify_saved();
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}
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bool quit_requested = false;
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template<bool force>
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void quit(const CommandParameters& params)
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{
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if (params.size() != 0)
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throw wrong_argument_count();
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if (not force)
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{
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for (auto& buffer : BufferManager::instance())
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{
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if (buffer.type() == Buffer::Type::File and buffer.is_modified())
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{
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print_status("modified buffer remaining");
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return;
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}
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}
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}
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quit_requested = true;
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}
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void show_buffer(const CommandParameters& params)
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{
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if (params.size() != 1)
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throw wrong_argument_count();
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Buffer* buffer = BufferManager::instance().get_buffer(params[0]);
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if (not buffer)
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print_status("buffer " + params[0] + " does not exists");
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else
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current_window = buffer->get_or_create_window();
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}
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void add_filter(const CommandParameters& params)
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{
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if (params.size() < 1)
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throw wrong_argument_count();
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try
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{
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FilterRegistry& registry = FilterRegistry::instance();
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FilterParameters filter_params(params.begin()+1, params.end());
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registry.add_filter_to_window(*current_window, params[0],
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filter_params);
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}
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catch (runtime_error& err)
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{
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print_status("error: " + err.description());
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}
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}
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void rm_filter(const CommandParameters& params)
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{
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if (params.size() != 1)
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throw wrong_argument_count();
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current_window->remove_filter(params[0]);
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}
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void do_command()
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{
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try
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{
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auto cmdline = prompt(":", std::bind(&CommandManager::complete,
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&CommandManager::instance(),
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_1, _2));
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CommandManager::instance().execute(cmdline);
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}
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catch (prompt_aborted&) {}
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}
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void do_search(Window& window)
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{
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try
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{
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std::string ex = prompt("/");
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if (ex.empty())
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ex = RegisterManager::instance()['/'];
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else
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RegisterManager::instance()['/'] = ex;
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window.select(std::bind(select_next_match, _1, ex));
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}
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catch (prompt_aborted&) {}
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}
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void do_search_next(Window& window)
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{
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std::string& ex = RegisterManager::instance()['/'];
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if (not ex.empty())
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window.select(std::bind(select_next_match, _1, ex));
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else
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print_status("no search pattern");
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}
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void do_yank(Window& window, int count)
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{
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RegisterManager::instance()['"'] = window.selection_content();
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window.clear_selections();
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}
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void do_erase(Window& window, int count)
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{
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RegisterManager::instance()['"'] = window.selection_content();
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window.erase();
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window.clear_selections();
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}
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void do_change(Window& window, int count)
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{
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RegisterManager::instance()['"'] = window.selection_content();
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do_insert(window, IncrementalInserter::Mode::Change);
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window.clear_selections();
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}
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template<bool append>
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void do_paste(Window& window, int count)
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{
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if (append)
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window.append(RegisterManager::instance()['"']);
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else
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window.insert(RegisterManager::instance()['"']);
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window.clear_selections();
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}
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void do_select_regex(Window& window, int count)
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{
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try
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{
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std::string ex = prompt("select: ");
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window.multi_select(std::bind(select_all_matches, _1, ex));
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}
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catch (prompt_aborted&) {}
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}
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std::unordered_map<char, std::function<void (Window& window, int count)>> keymap =
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{
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{ 'h', [](Window& window, int count) { window.move_cursor(DisplayCoord(0, -std::max(count,1))); } },
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{ 'j', [](Window& window, int count) { window.move_cursor(DisplayCoord( std::max(count,1), 0)); } },
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{ 'k', [](Window& window, int count) { window.move_cursor(DisplayCoord(-std::max(count,1), 0)); } },
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{ 'l', [](Window& window, int count) { window.move_cursor(DisplayCoord(0, std::max(count,1))); } },
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{ 'H', [](Window& window, int count) { window.move_cursor(DisplayCoord(0, -std::max(count,1)), true); } },
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{ 'J', [](Window& window, int count) { window.move_cursor(DisplayCoord( std::max(count,1), 0), true); } },
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{ 'K', [](Window& window, int count) { window.move_cursor(DisplayCoord(-std::max(count,1), 0), true); } },
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{ 'L', [](Window& window, int count) { window.move_cursor(DisplayCoord(0, std::max(count,1)), true); } },
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{ 't', [](Window& window, int count) { window.select(std::bind(select_to, _1, getch(), count, false)); } },
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{ 'f', [](Window& window, int count) { window.select(std::bind(select_to, _1, getch(), count, true)); } },
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{ 'T', [](Window& window, int count) { window.select(std::bind(select_to, _1, getch(), count, false), true); } },
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{ 'F', [](Window& window, int count) { window.select(std::bind(select_to, _1, getch(), count, true), true); } },
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{ 'd', do_erase },
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{ 'c', do_change },
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{ 'i', [](Window& window, int count) { do_insert(window, IncrementalInserter::Mode::Insert); } },
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{ 'I', [](Window& window, int count) { do_insert(window, IncrementalInserter::Mode::InsertAtLineBegin); } },
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{ 'a', [](Window& window, int count) { do_insert(window, IncrementalInserter::Mode::Append); } },
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{ 'A', [](Window& window, int count) { do_insert(window, IncrementalInserter::Mode::AppendAtLineEnd); } },
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{ 'o', [](Window& window, int count) { do_insert(window, IncrementalInserter::Mode::OpenLineBelow); } },
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{ 'O', [](Window& window, int count) { do_insert(window, IncrementalInserter::Mode::OpenLineAbove); } },
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{ 'g', do_go<false> },
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{ 'G', do_go<true> },
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{ 'y', do_yank },
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{ 'p', do_paste<true> },
|
|
{ 'P', do_paste<false> },
|
|
|
|
{ 's', do_select_regex },
|
|
|
|
{ '%', [](Window& window, int count) { window.select([](const BufferIterator& cursor)
|
|
{ return Selection(cursor.buffer().begin(), cursor.buffer().end()-1); }); } },
|
|
|
|
{ ':', [](Window& window, int count) { do_command(); } },
|
|
{ ' ', [](Window& window, int count) { window.clear_selections(); } },
|
|
{ 'w', [](Window& window, int count) { do { window.select(select_to_next_word); } while(--count > 0); } },
|
|
{ 'e', [](Window& window, int count) { do { window.select(select_to_next_word_end); } while(--count > 0); } },
|
|
{ 'b', [](Window& window, int count) { do { window.select(select_to_previous_word); } while(--count > 0); } },
|
|
{ 'W', [](Window& window, int count) { do { window.select(select_to_next_word, true); } while(--count > 0); } },
|
|
{ 'E', [](Window& window, int count) { do { window.select(select_to_next_word_end, true); } while(--count > 0); } },
|
|
{ 'B', [](Window& window, int count) { do { window.select(select_to_previous_word, true); } while(--count > 0); } },
|
|
{ 'x', [](Window& window, int count) { do { window.select(select_line, false); } while(--count > 0); } },
|
|
{ 'X', [](Window& window, int count) { do { window.select(select_line, true); } while(--count > 0); } },
|
|
{ 'm', [](Window& window, int count) { window.select(select_matching); } },
|
|
{ 'M', [](Window& window, int count) { window.select(select_matching, true); } },
|
|
{ '/', [](Window& window, int count) { do_search(window); } },
|
|
{ 'n', [](Window& window, int count) { do_search_next(window); } },
|
|
{ 'u', [](Window& window, int count) { do { if (not window.undo()) { print_status("nothing left to undo"); break; } } while(--count > 0); } },
|
|
{ 'U', [](Window& window, int count) { do { if (not window.redo()) { print_status("nothing left to redo"); break; } } while(--count > 0); } },
|
|
{ ',', [](Window& window, int count) { window.multi_select(select_whole_lines); } },
|
|
};
|
|
|
|
std::unordered_map<char, std::function<void (Window& window, int count)>> alt_keymap =
|
|
{
|
|
{ 't', [](Window& window, int count) { window.select(std::bind(select_to_reverse, _1, getch(), count, false)); } },
|
|
{ 'f', [](Window& window, int count) { window.select(std::bind(select_to_reverse, _1, getch(), count, true)); } },
|
|
{ 'T', [](Window& window, int count) { window.select(std::bind(select_to_reverse, _1, getch(), count, false), true); } },
|
|
{ 'F', [](Window& window, int count) { window.select(std::bind(select_to_reverse, _1, getch(), count, true), true); } },
|
|
|
|
{ 'w', [](Window& window, int count) { do { window.select(select_to_next_WORD); } while(--count > 0); } },
|
|
{ 'e', [](Window& window, int count) { do { window.select(select_to_next_WORD_end); } while(--count > 0); } },
|
|
{ 'b', [](Window& window, int count) { do { window.select(select_to_previous_WORD); } while(--count > 0); } },
|
|
{ 'W', [](Window& window, int count) { do { window.select(select_to_next_WORD, true); } while(--count > 0); } },
|
|
{ 'E', [](Window& window, int count) { do { window.select(select_to_next_WORD_end, true); } while(--count > 0); } },
|
|
{ 'B', [](Window& window, int count) { do { window.select(select_to_previous_WORD, true); } while(--count > 0); } },
|
|
|
|
{ 'l', [](Window& window, int count) { do { window.select(select_to_eol, false); } while(--count > 0); } },
|
|
{ 'L', [](Window& window, int count) { do { window.select(select_to_eol, true); } while(--count > 0); } },
|
|
{ 'h', [](Window& window, int count) { do { window.select(select_to_eol_reverse, false); } while(--count > 0); } },
|
|
{ 'H', [](Window& window, int count) { do { window.select(select_to_eol_reverse, true); } while(--count > 0); } },
|
|
};
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
init_ncurses();
|
|
|
|
CommandManager command_manager;
|
|
BufferManager buffer_manager;
|
|
RegisterManager register_manager;
|
|
FilterRegistry filter_registry;
|
|
|
|
command_manager.register_command(std::vector<std::string>{ "e", "edit" }, edit,
|
|
PerArgumentCommandCompleter{ complete_filename });
|
|
command_manager.register_command(std::vector<std::string>{ "q", "quit" }, quit<false>);
|
|
command_manager.register_command(std::vector<std::string>{ "q!", "quit!" }, quit<true>);
|
|
command_manager.register_command(std::vector<std::string>{ "w", "write" }, write_buffer,
|
|
PerArgumentCommandCompleter{ complete_filename });
|
|
command_manager.register_command(std::vector<std::string>{ "b", "buffer" }, show_buffer,
|
|
PerArgumentCommandCompleter {
|
|
std::bind(&BufferManager::complete_buffername, &buffer_manager, _1, _2)
|
|
});
|
|
command_manager.register_command(std::vector<std::string>{ "af", "addfilter" }, add_filter,
|
|
PerArgumentCommandCompleter {
|
|
std::bind(&FilterRegistry::complete_filter, &filter_registry, _1, _2)
|
|
});
|
|
command_manager.register_command(std::vector<std::string>{ "rf", "rmfilter" }, rm_filter,
|
|
PerArgumentCommandCompleter {
|
|
[&](const std::string& prefix, size_t cursor_pos)
|
|
{ return current_window->complete_filterid(prefix, cursor_pos); }
|
|
});
|
|
|
|
register_filters();
|
|
|
|
try
|
|
{
|
|
auto buffer = (argc > 1) ? open_or_create(argv[1]) : new Buffer("*scratch*", Buffer::Type::Scratch);
|
|
current_window = buffer->get_or_create_window();
|
|
|
|
draw_window(*current_window);
|
|
int count = 0;
|
|
while(not quit_requested)
|
|
{
|
|
try
|
|
{
|
|
char c = getch();
|
|
|
|
std::ostringstream oss;
|
|
oss << "key " << int(c) << " (" << c << ")\n";
|
|
write_debug(oss.str());
|
|
|
|
if (isdigit(c))
|
|
count = count * 10 + c - '0';
|
|
else
|
|
{
|
|
bool is_alt = false;
|
|
if (c == 27)
|
|
{
|
|
timeout(0);
|
|
char new_c = getch();
|
|
timeout(-1);
|
|
if (new_c != ERR)
|
|
{
|
|
c = new_c;
|
|
is_alt = true;
|
|
}
|
|
}
|
|
auto& active_keymap = is_alt ? alt_keymap : keymap;
|
|
|
|
if (active_keymap.find(c) != active_keymap.end())
|
|
{
|
|
active_keymap[c](*current_window, count);
|
|
draw_window(*current_window);
|
|
}
|
|
count = 0;
|
|
}
|
|
}
|
|
catch (Kakoune::runtime_error& error)
|
|
{
|
|
print_status(error.description());
|
|
}
|
|
}
|
|
deinit_ncurses();
|
|
}
|
|
catch (Kakoune::exception& error)
|
|
{
|
|
deinit_ncurses();
|
|
puts("uncaught exception:\n");
|
|
puts(error.description().c_str());
|
|
return -1;
|
|
}
|
|
catch (...)
|
|
{
|
|
deinit_ncurses();
|
|
throw;
|
|
}
|
|
return 0;
|
|
}
|