Alex Chernyakhovsky
325098ac07
Previously, mosh used extensive -I flags and all of the mosh-local makes it really hard to tell what the proper dependency graph is, so instead remove the -I arguments in favvor of $(top_srcdir) and qualify the paths wherever they are used.
140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
/*
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Mosh: the mobile shell
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Copyright 2012 Keith Winstein
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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In addition, as a special exception, the copyright holders give
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permission to link the code of portions of this program with the
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OpenSSL library under certain conditions as described in each
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individual source file, and distribute linked combinations including
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the two.
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You must obey the GNU General Public License in all respects for all
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of the code used other than OpenSSL. If you modify file(s) with this
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exception, you may extend this exception to your version of the
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file(s), but you are not obligated to do so. If you do not wish to do
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so, delete this exception statement from your version. If you delete
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this exception statement from all source files in the program, then
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also delete it here.
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*/
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/* This is in its own file because otherwise the ncurses #defines
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alias our own variable names. */
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#include "src/include/config.h"
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#include "terminaldisplay.h"
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#include <string>
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#include <stdexcept>
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#if defined HAVE_NCURSESW_CURSES_H
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# include <ncursesw/curses.h>
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# include <ncursesw/term.h>
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#elif defined HAVE_NCURSESW_H
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# include <ncursesw.h>
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# include <term.h>
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#elif defined HAVE_NCURSES_CURSES_H
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# include <ncurses/curses.h>
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# include <ncurses/term.h>
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#elif defined HAVE_NCURSES_H
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# include <ncurses.h>
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# include <term.h>
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#elif defined HAVE_CURSES_H
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# include <curses.h>
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# include <term.h>
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#else
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# error "SysV or X/Open-compatible Curses header file required"
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#endif
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#include <stdlib.h>
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#include <string.h>
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using namespace Terminal;
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static bool ti_flag( const char *capname )
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{
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int val = tigetflag( const_cast<char *>( capname ) );
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if ( val == -1 ) {
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throw std::invalid_argument( std::string( "Invalid terminfo boolean capability " ) + capname );
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}
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return val;
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}
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static const char *ti_str( const char *capname )
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{
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const char *val = tigetstr( const_cast<char *>( capname ) );
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if ( val == (const char *)-1 ) {
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throw std::invalid_argument( std::string( "Invalid terminfo string capability " ) + capname );
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}
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return val;
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}
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Display::Display( bool use_environment )
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: has_ech( true ), has_bce( true ), has_title( true ), smcup( NULL ), rmcup( NULL )
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{
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if ( use_environment ) {
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int errret = -2;
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int ret = setupterm( (char *)0, 1, &errret );
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if ( ret != OK ) {
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switch ( errret ) {
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case 1:
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throw std::runtime_error( "Terminal is hardcopy and cannot be used by curses applications." );
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break;
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case 0:
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throw std::runtime_error( "Unknown terminal type." );
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break;
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case -1:
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throw std::runtime_error( "Terminfo database could not be found." );
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break;
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default:
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throw std::runtime_error( "Unknown terminfo error." );
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break;
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}
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}
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/* check for ECH */
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has_ech = ti_str( "ech" );
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/* check for BCE */
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has_bce = ti_flag( "bce" );
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/* Check if we can set the window title and icon name. terminfo does not
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have reliable information on this, so we hardcode a whitelist of
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terminal type prefixes. */
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static const char * const title_term_types[] = {
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"xterm", "rxvt", "kterm", "Eterm", "alacritty", "screen", "tmux"
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};
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has_title = false;
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const char *term_type = getenv( "TERM" );
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if ( term_type ) {
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for ( size_t i = 0;
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i < sizeof( title_term_types ) / sizeof( const char * );
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i++ ) {
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if ( 0 == strncmp( term_type, title_term_types[ i ],
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strlen( title_term_types[ i ] ) ) ) {
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has_title = true;
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break;
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}
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}
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}
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if ( !getenv( "MOSH_NO_TERM_INIT" ) ) {
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smcup = ti_str("smcup");
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rmcup = ti_str("rmcup");
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}
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}
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}
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