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- /* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #include <stdbool.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- #include "chat.h"
-
- static bool xterm;
-
- void termInit(void) {
- char *term = getenv("TERM");
- xterm = term && !strncmp(term, "xterm", 5);
- }
-
- 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);
- }
- }
-
- #define T(s, i) ((s) << 8 | (i))
-
- enum { Esc = '\33' };
-
- enum TermEvent termEvent(char ch) {
- static uint state = 0;
- switch (T(state, ch)) {
- case T(0, Esc): state = 1; return 0;
- case T(1, '['): state = 2; return 0;
- case T(2, 'I'): state = 0; return TermFocusIn;
- case T(2, 'O'): state = 0; return TermFocusOut;
- case T(2, '2'): state = 3; return 0;
- case T(3, '0'): state = 4; return 0;
- case T(4, '0'): state = 5; return 0;
- case T(5, '~'): state = 0; return TermPasteStart;
- case T(4, '1'): state = 6; return 0;
- case T(6, '~'): state = 0; return TermPasteEnd;
- default: state = 0; return 0;
- }
- }
-
- #ifdef TEST
- #include <assert.h>
-
- static bool testEvent(const char *str, enum TermEvent event) {
- enum TermEvent e = TermNone;
- for (size_t i = 0; i < strlen(str); ++i) {
- if (e) return false;
- e = termEvent(str[i]);
- }
- return (e == event);
- }
-
- int main() {
- assert(testEvent("\33[I", TermFocusIn));
- assert(testEvent("\33[O", TermFocusOut));
- assert(testEvent("\33[200~", TermPasteStart));
- assert(testEvent("\33[201~", TermPasteEnd));
- }
-
- #endif
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