minetest/src/terminal_chat_console.cpp

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/*
Minetest
Copyright (C) 2015 est31 <MTest31@outlook.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
2021-12-02 00:30:40 +01:00
#include <inttypes.h>
#include "config.h"
#if USE_CURSES
#include "version.h"
#include "terminal_chat_console.h"
#include "porting.h"
#include "settings.h"
#include "util/numeric.h"
#include "util/string.h"
#include "chat_interface.h"
TerminalChatConsole g_term_console;
// include this last to avoid any conflicts
// (likes to set macros to common names, conflicting various stuff)
#if CURSES_HAVE_NCURSESW_NCURSES_H
#include <ncursesw/ncurses.h>
#elif CURSES_HAVE_NCURSESW_CURSES_H
#include <ncursesw/curses.h>
#elif CURSES_HAVE_CURSES_H
#include <curses.h>
#elif CURSES_HAVE_NCURSES_H
#include <ncurses.h>
#elif CURSES_HAVE_NCURSES_NCURSES_H
#include <ncurses/ncurses.h>
#elif CURSES_HAVE_NCURSES_CURSES_H
#include <ncurses/curses.h>
#endif
// Some functions to make drawing etc position independent
static bool reformat_backend(ChatBackend *backend, int rows, int cols)
{
if (rows < 2)
return false;
backend->reformat(cols, rows - 2);
return true;
}
static void move_for_backend(int row, int col)
{
move(row + 1, col);
}
void TerminalChatConsole::initOfCurses()
{
initscr();
cbreak(); //raw();
noecho();
keypad(stdscr, TRUE);
nodelay(stdscr, TRUE);
timeout(100);
// To make esc not delay up to one second. According to the internet,
// this is the value vim uses, too.
set_escdelay(25);
getmaxyx(stdscr, m_rows, m_cols);
m_can_draw_text = reformat_backend(&m_chat_backend, m_rows, m_cols);
}
void TerminalChatConsole::deInitOfCurses()
{
endwin();
}
void *TerminalChatConsole::run()
{
BEGIN_DEBUG_EXCEPTION_HANDLER
std::cout << "========================" << std::endl;
std::cout << "Begin log output over terminal"
<< " (no stdout/stderr backlog during that)" << std::endl;
// Make the loggers to stdout/stderr shut up.
// Go over our own loggers instead.
LogLevelMask err_mask = g_logger.removeOutput(&stderr_output);
LogLevelMask out_mask = g_logger.removeOutput(&stdout_output);
g_logger.addOutput(&m_log_output);
// Inform the server of our nick
m_chat_interface->command_queue.push_back(
new ChatEventNick(CET_NICK_ADD, m_nick));
{
// Ensures that curses is deinitialized even on an exception being thrown
CursesInitHelper helper(this);
while (!stopRequested()) {
int ch = getch();
if (stopRequested())
break;
step(ch);
}
}
if (m_kill_requested)
*m_kill_requested = true;
g_logger.removeOutput(&m_log_output);
g_logger.addOutputMasked(&stderr_output, err_mask);
g_logger.addOutputMasked(&stdout_output, out_mask);
std::cout << "End log output over terminal"
<< " (no stdout/stderr backlog during that)" << std::endl;
std::cout << "========================" << std::endl;
END_DEBUG_EXCEPTION_HANDLER
return NULL;
}
void TerminalChatConsole::typeChatMessage(const std::wstring &msg)
{
// Discard empty line
if (msg.empty())
return;
// Send to server
m_chat_interface->command_queue.push_back(
new ChatEventChat(m_nick, msg));
// Print if its a command (gets eaten by server otherwise)
if (msg[0] == L'/') {
m_chat_backend.addMessage(L"", (std::wstring)L"Issued command: " + msg);
}
}
void TerminalChatConsole::handleInput(int ch, bool &complete_redraw_needed)
{
ChatPrompt &prompt = m_chat_backend.getPrompt();
// Helpful if you want to collect key codes that aren't documented
/*if (ch != ERR) {
m_chat_backend.addMessage(L"",
(std::wstring)L"Pressed key " + utf8_to_wide(
std::string(keyname(ch)) + " (code " + itos(ch) + ")"));
complete_redraw_needed = true;
}//*/
// All the key codes below are compatible to xterm
// Only add new ones if you have tried them there,
// to ensure compatibility with not just xterm but the wide
// range of terminals that are compatible to xterm.
switch (ch) {
case ERR: // no input
break;
case 27: // ESC
// Toggle ESC mode
m_esc_mode = !m_esc_mode;
break;
case KEY_PPAGE:
m_chat_backend.scrollPageUp();
complete_redraw_needed = true;
break;
case KEY_NPAGE:
m_chat_backend.scrollPageDown();
complete_redraw_needed = true;
break;
case KEY_ENTER:
case '\r':
case '\n': {
prompt.addToHistory(prompt.getLine());
typeChatMessage(prompt.replace(L""));
break;
}
case KEY_UP:
prompt.historyPrev();
break;
case KEY_DOWN:
prompt.historyNext();
break;
case KEY_LEFT:
// Left pressed
// move character to the left
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_CHARACTER);
break;
case 545:
// Ctrl-Left pressed
// move word to the left
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_WORD);
break;
case KEY_RIGHT:
// Right pressed
// move character to the right
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_CHARACTER);
break;
case 560:
// Ctrl-Right pressed
// move word to the right
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_WORD);
break;
case KEY_HOME:
// Home pressed
// move to beginning of line
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_LINE);
break;
case KEY_END:
// End pressed
// move to end of line
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_LINE);
break;
case KEY_BACKSPACE:
case '\b':
case 127:
// Backspace pressed
// delete character to the left
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_CHARACTER);
break;
case KEY_DC:
// Delete pressed
// delete character to the right
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_CHARACTER);
break;
case 519:
// Ctrl-Delete pressed
// delete word to the right
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_WORD);
break;
case 21:
// Ctrl-U pressed
// kill line to left end
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_LINE);
break;
case 11:
// Ctrl-K pressed
// kill line to right end
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_LINE);
break;
case KEY_TAB:
// Tab pressed
// Nick completion
prompt.nickCompletion(m_nicks, false);
break;
default:
// Add character to the prompt,
// assuming UTF-8.
if (IS_UTF8_MULTB_START(ch)) {
m_pending_utf8_bytes.append(1, (char)ch);
m_utf8_bytes_to_wait += UTF8_MULTB_START_LEN(ch) - 1;
} else if (m_utf8_bytes_to_wait != 0) {
m_pending_utf8_bytes.append(1, (char)ch);
m_utf8_bytes_to_wait--;
if (m_utf8_bytes_to_wait == 0) {
std::wstring w = utf8_to_wide(m_pending_utf8_bytes);
m_pending_utf8_bytes = "";
// hopefully only one char in the wstring...
for (size_t i = 0; i < w.size(); i++) {
prompt.input(w.c_str()[i]);
}
}
} else if (IS_ASCII_PRINTABLE_CHAR(ch)) {
prompt.input(ch);
} else {
// Silently ignore characters we don't handle
//warningstream << "Pressed invalid character '"
// << keyname(ch) << "' (code " << itos(ch) << ")" << std::endl;
}
break;
}
}
void TerminalChatConsole::step(int ch)
{
bool complete_redraw_needed = false;
// empty queues
while (!m_chat_interface->outgoing_queue.empty()) {
ChatEvent *evt = m_chat_interface->outgoing_queue.pop_frontNoEx();
switch (evt->type) {
case CET_NICK_REMOVE:
m_nicks.remove(((ChatEventNick *)evt)->nick);
break;
case CET_NICK_ADD:
m_nicks.push_back(((ChatEventNick *)evt)->nick);
break;
case CET_CHAT:
complete_redraw_needed = true;
// This is only used for direct replies from commands
// or for lua's print() functionality
m_chat_backend.addMessage(L"", ((ChatEventChat *)evt)->evt_msg);
break;
case CET_TIME_INFO:
ChatEventTimeInfo *tevt = (ChatEventTimeInfo *)evt;
m_game_time = tevt->game_time;
m_time_of_day = tevt->time;
};
delete evt;
}
while (!m_log_output.queue.empty()) {
complete_redraw_needed = true;
std::pair<LogLevel, std::string> p = m_log_output.queue.pop_frontNoEx();
if (p.first > m_log_level)
continue;
std::wstring error_message = utf8_to_wide(Logger::getLevelLabel(p.first));
if (!g_settings->getBool("disable_escape_sequences")) {
error_message = std::wstring(L"\x1b(c@red)").append(error_message)
.append(L"\x1b(c@white)");
}
m_chat_backend.addMessage(error_message, utf8_to_wide(p.second));
}
// handle input
if (!m_esc_mode) {
handleInput(ch, complete_redraw_needed);
} else {
switch (ch) {
case ERR: // no input
break;
case 27: // ESC
// Toggle ESC mode
m_esc_mode = !m_esc_mode;
break;
case 'L':
m_log_level--;
m_log_level = MYMAX(m_log_level, LL_NONE + 1); // LL_NONE isn't accessible
break;
case 'l':
m_log_level++;
m_log_level = MYMIN(m_log_level, LL_MAX - 1);
break;
}
}
// was there a resize?
int xn, yn;
getmaxyx(stdscr, yn, xn);
if (xn != m_cols || yn != m_rows) {
m_cols = xn;
m_rows = yn;
m_can_draw_text = reformat_backend(&m_chat_backend, m_rows, m_cols);
complete_redraw_needed = true;
}
// draw title
move(0, 0);
clrtoeol();
addstr(PROJECT_NAME_C);
addstr(" ");
addstr(g_version_hash);
u32 minutes = m_time_of_day % 1000;
u32 hours = m_time_of_day / 1000;
minutes = (float)minutes / 1000 * 60;
if (m_game_time)
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printw(" | Game %" PRIu64 " Time of day %02d:%02d ",
m_game_time, hours, minutes);
// draw text
if (complete_redraw_needed && m_can_draw_text)
draw_text();
// draw prompt
if (!m_esc_mode) {
// normal prompt
ChatPrompt& prompt = m_chat_backend.getPrompt();
std::string prompt_text = wide_to_utf8(prompt.getVisiblePortion());
move(m_rows - 1, 0);
clrtoeol();
addstr(prompt_text.c_str());
// Draw cursor
s32 cursor_pos = prompt.getVisibleCursorPosition();
if (cursor_pos >= 0) {
move(m_rows - 1, cursor_pos);
}
} else {
// esc prompt
move(m_rows - 1, 0);
clrtoeol();
printw("[ESC] Toggle ESC mode |"
" [CTRL+C] Shut down |"
" (L) in-, (l) decrease loglevel %s",
Logger::getLevelLabel((LogLevel) m_log_level).c_str());
}
refresh();
}
void TerminalChatConsole::draw_text()
{
ChatBuffer& buf = m_chat_backend.getConsoleBuffer();
for (u32 row = 0; row < buf.getRows(); row++) {
move_for_backend(row, 0);
clrtoeol();
const ChatFormattedLine& line = buf.getFormattedLine(row);
if (line.fragments.empty())
continue;
for (const ChatFormattedFragment &fragment : line.fragments) {
addstr(wide_to_utf8(fragment.text.getString()).c_str());
}
}
}
void TerminalChatConsole::stopAndWaitforThread()
{
clearKillStatus();
stop();
wait();
}
#endif