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/* Copyright (C) 2018, 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "chat.h"
static bool xterm;
void termInit(void) {
const char *term = getenv("TERM");
xterm = (term && !strncmp(term, "xterm", 5));
}
void termNoFlow(void) {
struct termios attr;
int error = tcgetattr(STDIN_FILENO, &attr);
if (error) return;
attr.c_iflag &= ~IXON;
attr.c_cc[VDISCARD] = _POSIX_VDISABLE;
tcsetattr(STDIN_FILENO, TCSANOW, &attr);
}
void termTitle(const char *title) {
if (!xterm) return;
printf("\33]0;%s\33\\", title);
fflush(stdout);
}
static void privateMode(const char *mode, bool set) {
printf("\33[?%s%c", mode, (set ? 'h' : 'l'));
fflush(stdout);
}
void termMode(enum TermMode mode, bool set) {
switch (mode) {
break; case TermFocus: privateMode("1004", set);
break; case TermPaste: privateMode("2004", set);
}
}
enum { Esc = '\33' };
enum TermEvent termEvent(char ch) {
static int st;
#define T(st, ch) ((st) << 8 | (ch))
switch (T(st, ch)) {
break; case T(0, Esc): st = 1;
break; case T(1, '['): st = 2;
break; case T(2, 'I'): st = 0; return TermFocusIn;
break; case T(2, 'O'): st = 0; return TermFocusOut;
break; case T(2, '2'): st = 3;
break; case T(3, '0'): st = 4;
break; case T(4, '0'): st = 5;
break; case T(5, '~'): st = 0; return TermPasteStart;
break; case T(4, '1'): st = 6;
break; case T(6, '~'): st = 0; return TermPasteEnd;
break; default: st = 0;
}
return 0;
#undef T
}
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