diff options
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | chat.h | 17 | ||||
| -rw-r--r-- | term.c | 79 |
3 files changed, 97 insertions, 0 deletions
@@ -8,6 +8,7 @@ LDLIBS = -lcrypto -ltls OBJS += chat.o OBJS += handle.o OBJS += irc.o +OBJS += term.o catgirl: ${OBJS} ${CC} ${LDFLAGS} ${OBJS} ${LDLIBS} -o $@ @@ -91,6 +91,23 @@ void ircFormat(const char *format, ...) void handle(struct Message msg); +enum TermMode { + TermFocus, + TermPaste, +}; +enum TermEvent { + TermNone, + TermFocusIn, + TermFocusOut, + TermPasteStart, + TermPasteEnd, +}; +void termInit(void); +void termNoFlow(void); +void termTitle(const char *title); +void termMode(enum TermMode mode, bool set); +enum TermEvent termEvent(char ch); + #define BASE64_SIZE(len) (1 + ((len) + 2) / 3 * 4) static const char Base64[64] = { @@ -0,0 +1,79 @@ +/* Copyright (C) 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 <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 +} |