/* $OpenBSD: tty.c,v 1.89 2010/08/11 07:34:43 nicm Exp $ */ /* * Copyright (c) 2007 Nicholas Marriott * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include "tmux.h" void tty_read_callback(struct bufferevent *, void *); void tty_error_callback(struct bufferevent *, short, void *); void tty_fill_acs(struct tty *); int tty_try_256(struct tty *, u_char, const char *); int tty_try_88(struct tty *, u_char, const char *); void tty_colours(struct tty *, const struct grid_cell *); void tty_check_fg(struct tty *, struct grid_cell *); void tty_check_bg(struct tty *, struct grid_cell *); void tty_colours_fg(struct tty *, const struct grid_cell *); void tty_colours_bg(struct tty *, const struct grid_cell *); void tty_redraw_region(struct tty *, const struct tty_ctx *); void tty_emulate_repeat( struct tty *, enum tty_code_code, enum tty_code_code, u_int); void tty_cell(struct tty *, const struct grid_cell *, const struct grid_utf8 *); void tty_init(struct tty *tty, int fd, char *term) { char *path; memset(tty, 0, sizeof *tty); tty->log_fd = -1; if (term == NULL || *term == '\0') tty->termname = xstrdup("unknown"); else tty->termname = xstrdup(term); if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) fatal("fcntl failed"); tty->fd = fd; if ((path = ttyname(fd)) == NULL) fatalx("ttyname failed"); tty->path = xstrdup(path); tty->flags = 0; tty->term_flags = 0; } int tty_resize(struct tty *tty) { struct winsize ws; u_int sx, sy; if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) { sx = ws.ws_col; if (sx == 0) sx = 80; sy = ws.ws_row; if (sy == 0) sy = 24; } else { sx = 80; sy = 24; } if (sx == tty->sx && sy == tty->sy) return (0); tty->sx = sx; tty->sy = sy; tty->cx = UINT_MAX; tty->cy = UINT_MAX; tty->rupper = UINT_MAX; tty->rlower = UINT_MAX; /* * If the terminal has been started, reset the actual scroll region and * cursor position, as this may not have happened. */ if (tty->flags & TTY_STARTED) { tty_cursor(tty, 0, 0); tty_region(tty, 0, tty->sy - 1); } return (1); } int tty_open(struct tty *tty, const char *overrides, char **cause) { char out[64]; int fd; if (debug_level > 3) { xsnprintf(out, sizeof out, "tmux-out-%ld.log", (long) getpid()); fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644); if (fd != -1 && fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) fatal("fcntl failed"); tty->log_fd = fd; } tty->term = tty_term_find(tty->termname, tty->fd, overrides, cause); if (tty->term == NULL) { tty_close(tty); return (-1); } tty->flags |= TTY_OPENED; tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_ESCAPE); tty->event = bufferevent_new( tty->fd, tty_read_callback, NULL, tty_error_callback, tty); tty_start_tty(tty); tty_keys_init(tty); tty_fill_acs(tty); return (0); } /* ARGSUSED */ void tty_read_callback(unused struct bufferevent *bufev, void *data) { struct tty *tty = data; while (tty_keys_next(tty)) ; } /* ARGSUSED */ void tty_error_callback( unused struct bufferevent *bufev, unused short what, unused void *data) { } void tty_start_tty(struct tty *tty) { struct termios tio; int mode; if (tty->fd == -1) return; if ((mode = fcntl(tty->fd, F_GETFL)) == -1) fatal("fcntl failed"); if (fcntl(tty->fd, F_SETFL, mode|O_NONBLOCK) == -1) fatal("fcntl failed"); bufferevent_enable(tty->event, EV_READ|EV_WRITE); if (tcgetattr(tty->fd, &tty->tio) != 0) fatal("tcgetattr failed"); memcpy(&tio, &tty->tio, sizeof tio); tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); tio.c_iflag |= IGNBRK; tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL| ECHOPRT|ECHOKE|ECHOCTL|ISIG); tio.c_cc[VMIN] = 1; tio.c_cc[VTIME] = 0; if (tcsetattr(tty->fd, TCSANOW, &tio) != 0) fatal("tcsetattr failed"); tcflush(tty->fd, TCIOFLUSH); tty_putcode(tty, TTYC_SMCUP); tty_putcode(tty, TTYC_SGR0); memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); tty_putcode(tty, TTYC_RMKX); tty_putcode(tty, TTYC_ENACS); tty_putcode(tty, TTYC_CLEAR); tty_putcode(tty, TTYC_CNORM); if (tty_term_has(tty->term, TTYC_KMOUS)) tty_puts(tty, "\033[?1000l"); tty->cx = UINT_MAX; tty->cy = UINT_MAX; tty->rlower = UINT_MAX; tty->rupper = UINT_MAX; tty->mode = MODE_CURSOR; tty->flags |= TTY_STARTED; } void tty_stop_tty(struct tty *tty) { struct winsize ws; int mode; if (!(tty->flags & TTY_STARTED)) return; tty->flags &= ~TTY_STARTED; bufferevent_disable(tty->event, EV_READ|EV_WRITE); /* * Be flexible about error handling and try not kill the server just * because the fd is invalid. Things like ssh -t can easily leave us * with a dead tty. */ if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1) return; if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1) return; tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); if (tty_term_has(tty->term, TTYC_KMOUS)) tty_raw(tty, "\033[?1000l"); tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); if ((mode = fcntl(tty->fd, F_GETFL)) != -1) fcntl(tty->fd, F_SETFL, mode & ~O_NONBLOCK); } void tty_fill_acs(struct tty *tty) { const char *ptr; memset(tty->acs, 0, sizeof tty->acs); if (!tty_term_has(tty->term, TTYC_ACSC)) return; ptr = tty_term_string(tty->term, TTYC_ACSC); if (strlen(ptr) % 2 != 0) return; for (; *ptr != '\0'; ptr += 2) tty->acs[(u_char) ptr[0]] = ptr[1]; } u_char tty_get_acs(struct tty *tty, u_char ch) { if (tty->acs[ch] != '\0') return (tty->acs[ch]); return (ch); } void tty_close(struct tty *tty) { if (tty->log_fd != -1) { close(tty->log_fd); tty->log_fd = -1; } evtimer_del(&tty->key_timer); tty_stop_tty(tty); if (tty->flags & TTY_OPENED) { bufferevent_free(tty->event); tty_term_free(tty->term); tty_keys_free(tty); tty->flags &= ~TTY_OPENED; } if (tty->fd != -1) { close(tty->fd); tty->fd = -1; } } void tty_free(struct tty *tty) { tty_close(tty); if (tty->path != NULL) xfree(tty->path); if (tty->termname != NULL) xfree(tty->termname); } void tty_raw(struct tty *tty, const char *s) { write(tty->fd, s, strlen(s)); } void tty_putcode(struct tty *tty, enum tty_code_code code) { tty_puts(tty, tty_term_string(tty->term, code)); } void tty_putcode1(struct tty *tty, enum tty_code_code code, int a) { if (a < 0) return; tty_puts(tty, tty_term_string1(tty->term, code, a)); } void tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b) { if (a < 0 || b < 0) return; tty_puts(tty, tty_term_string2(tty->term, code, a, b)); } void tty_puts(struct tty *tty, const char *s) { if (*s == '\0') return; bufferevent_write(tty->event, s, strlen(s)); if (tty->log_fd != -1) write(tty->log_fd, s, strlen(s)); } void tty_putc(struct tty *tty, u_char ch) { u_int sx; if (tty->cell.attr & GRID_ATTR_CHARSET) ch = tty_get_acs(tty, ch); bufferevent_write(tty->event, &ch, 1); if (ch >= 0x20 && ch != 0x7f) { sx = tty->sx; if (tty->term->flags & TERM_EARLYWRAP) sx--; if (tty->cx >= sx) { tty->cx = 1; if (tty->cy != tty->rlower) tty->cy++; } else tty->cx++; } if (tty->log_fd != -1) write(tty->log_fd, &ch, 1); } void tty_pututf8(struct tty *tty, const struct grid_utf8 *gu) { size_t size; size = grid_utf8_size(gu); bufferevent_write(tty->event, gu->data, size); if (tty->log_fd != -1) write(tty->log_fd, gu->data, size); tty->cx += gu->width; } void tty_set_title(struct tty *tty, const char *title) { if (strstr(tty->termname, "xterm") == NULL && strstr(tty->termname, "rxvt") == NULL && strcmp(tty->termname, "screen") != 0) return; tty_puts(tty, "\033]0;"); tty_puts(tty, title); tty_putc(tty, '\007'); } void tty_update_mode(struct tty *tty, int mode) { int changed; if (tty->flags & TTY_NOCURSOR) mode &= ~MODE_CURSOR; changed = mode ^ tty->mode; if (changed & MODE_CURSOR) { if (mode & MODE_CURSOR) tty_putcode(tty, TTYC_CNORM); else tty_putcode(tty, TTYC_CIVIS); } if (changed & (MODE_MOUSE|MODE_MOUSEMOTION)) { if (mode & MODE_MOUSE) { if (mode & MODE_MOUSEMOTION) tty_puts(tty, "\033[?1003h"); else tty_puts(tty, "\033[?1000h"); } else { if (mode & MODE_MOUSEMOTION) tty_puts(tty, "\033[?1003l"); else tty_puts(tty, "\033[?1000l"); } } if (changed & MODE_KKEYPAD) { if (mode & MODE_KKEYPAD) tty_putcode(tty, TTYC_SMKX); else tty_putcode(tty, TTYC_RMKX); } tty->mode = mode; } void tty_emulate_repeat( struct tty *tty, enum tty_code_code code, enum tty_code_code code1, u_int n) { if (tty_term_has(tty->term, code)) tty_putcode1(tty, code, n); else { while (n-- > 0) tty_putcode(tty, code1); } } /* * Redraw scroll region using data from screen (already updated). Used when * CSR not supported, or window is a pane that doesn't take up the full * width of the terminal. */ void tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i; /* * If region is >= 50% of the screen, just schedule a window redraw. In * most cases, this is likely to be followed by some more scrolling - * without this, the entire pane ends up being redrawn many times which * can be much more data. */ if (ctx->orupper - ctx->orlower >= screen_size_y(s) / 2) { wp->flags |= PANE_REDRAW; return; } if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) { for (i = ctx->ocy; i < screen_size_y(s); i++) tty_draw_line(tty, s, i, wp->xoff, wp->yoff); } else { for (i = ctx->orupper; i <= ctx->orlower; i++) tty_draw_line(tty, s, i, wp->xoff, wp->yoff); } } void tty_draw_line(struct tty *tty, struct screen *s, u_int py, u_int ox, u_int oy) { const struct grid_cell *gc; struct grid_line *gl; struct grid_cell tmpgc; const struct grid_utf8 *gu; u_int i, sx; tty_update_mode(tty, tty->mode & ~MODE_CURSOR); sx = screen_size_x(s); if (sx > s->grid->linedata[s->grid->hsize + py].cellsize) sx = s->grid->linedata[s->grid->hsize + py].cellsize; if (sx > tty->sx) sx = tty->sx; /* * Don't move the cursor to the start permission if it will wrap there * itself. */ gl = NULL; if (py != 0) gl = &s->grid->linedata[s->grid->hsize + py - 1]; if (oy + py == 0 || gl == NULL || !(gl->flags & GRID_LINE_WRAPPED) || tty->cx < tty->sx || ox != 0 || (oy + py != tty->cy + 1 && tty->cy != s->rlower + oy)) tty_cursor(tty, ox, oy + py); for (i = 0; i < sx; i++) { gc = grid_view_peek_cell(s->grid, i, py); gu = NULL; if (gc->flags & GRID_FLAG_UTF8) gu = grid_view_peek_utf8(s->grid, i, py); if (screen_check_selection(s, i, py)) { memcpy(&tmpgc, &s->sel.cell, sizeof tmpgc); tmpgc.data = gc->data; tmpgc.flags = gc->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256); tmpgc.flags |= s->sel.cell.flags & (GRID_FLAG_FG256|GRID_FLAG_BG256); tty_cell(tty, &tmpgc, gu); } else tty_cell(tty, gc, gu); } if (sx >= tty->sx) { tty_update_mode(tty, tty->mode); return; } tty_reset(tty); tty_cursor(tty, ox + sx, oy + py); if (screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL)) tty_putcode(tty, TTYC_EL); else { for (i = sx; i < screen_size_x(s); i++) tty_putc(tty, ' '); } tty_update_mode(tty, tty->mode); } void tty_write(void (*cmdfn)( struct tty *, const struct tty_ctx *), const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct client *c; u_int i; /* wp can be NULL if updating the screen but not the terminal. */ if (wp == NULL) return; if (wp->window->flags & WINDOW_REDRAW || wp->flags & PANE_REDRAW) return; if (wp->window->flags & WINDOW_HIDDEN || !window_pane_visible(wp)) return; for (i = 0; i < ARRAY_LENGTH(&clients); i++) { c = ARRAY_ITEM(&clients, i); if (c == NULL || c->session == NULL) continue; if (c->flags & CLIENT_SUSPENDED) continue; if (c->session->curw->window == wp->window) { if (c->tty.term == NULL) continue; if (c->tty.flags & (TTY_FREEZE|TTY_BACKOFF)) continue; cmdfn(&c->tty, ctx); } } } void tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i; if (wp->xoff != 0 || screen_size_x(s) < tty->sx) { tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff); return; } tty_reset(tty); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); if (tty_term_has(tty->term, TTYC_ICH) || tty_term_has(tty->term, TTYC_ICH1)) tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); else if (tty_term_has(tty->term, TTYC_SMIR) && tty_term_has(tty->term, TTYC_RMIR)) { tty_putcode(tty, TTYC_SMIR); for (i = 0; i < ctx->num; i++) tty_putc(tty, ' '); tty_putcode(tty, TTYC_RMIR); } else tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff); } void tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; if (wp->xoff != 0 || screen_size_x(s) < tty->sx || (!tty_term_has(tty->term, TTYC_DCH) && !tty_term_has(tty->term, TTYC_DCH1))) { tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff); return; } tty_reset(tty); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); if (tty_term_has(tty->term, TTYC_DCH) || tty_term_has(tty->term, TTYC_DCH1)) tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); } void tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; if (wp->xoff != 0 || screen_size_x(s) < tty->sx || !tty_term_has(tty->term, TTYC_CSR) || !tty_term_has(tty->term, TTYC_IL1)) { tty_redraw_region(tty, ctx); return; } tty_reset(tty); tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); } void tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; if (wp->xoff != 0 || screen_size_x(s) < tty->sx || !tty_term_has(tty->term, TTYC_CSR) || !tty_term_has(tty->term, TTYC_DL1)) { tty_redraw_region(tty, ctx); return; } tty_reset(tty); tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); } void tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i; tty_reset(tty); tty_cursor_pane(tty, ctx, 0, ctx->ocy); if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { tty_putcode(tty, TTYC_EL); } else { for (i = 0; i < screen_size_x(s); i++) tty_putc(tty, ' '); } } void tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i; tty_reset(tty); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL)) tty_putcode(tty, TTYC_EL); else { for (i = ctx->ocx; i < screen_size_x(s); i++) tty_putc(tty, ' '); } } void tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; u_int i; tty_reset(tty); if (wp->xoff == 0 && tty_term_has(tty->term, TTYC_EL1)) { tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); tty_putcode(tty, TTYC_EL1); } else { tty_cursor_pane(tty, ctx, 0, ctx->ocy); for (i = 0; i < ctx->ocx + 1; i++) tty_putc(tty, ' '); } } void tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; if (ctx->ocy != ctx->orupper) return; if (wp->xoff != 0 || screen_size_x(s) < tty->sx || !tty_term_has(tty->term, TTYC_CSR) || !tty_term_has(tty->term, TTYC_RI)) { tty_redraw_region(tty, ctx); return; } tty_reset(tty); tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); tty_putcode(tty, TTYC_RI); } void tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; if (ctx->ocy != ctx->orlower) return; if (wp->xoff != 0 || screen_size_x(s) < tty->sx || !tty_term_has(tty->term, TTYC_CSR)) { tty_redraw_region(tty, ctx); return; } /* * If this line wrapped naturally (ctx->num is nonzero), don't do * anything - the cursor can just be moved to the last cell and wrap * naturally. */ if (ctx->num && !(tty->term->flags & TERM_EARLYWRAP)) return; tty_reset(tty); tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); tty_putc(tty, '\n'); } void tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i, j; tty_reset(tty); tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1); tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { tty_putcode(tty, TTYC_EL); if (ctx->ocy != screen_size_y(s) - 1) { tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1); for (i = ctx->ocy + 1; i < screen_size_y(s); i++) { tty_putcode(tty, TTYC_EL); if (i == screen_size_y(s) - 1) continue; tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1); tty->cy++; } } } else { for (i = ctx->ocx; i < screen_size_x(s); i++) tty_putc(tty, ' '); for (j = ctx->ocy + 1; j < screen_size_y(s); j++) { tty_cursor_pane(tty, ctx, 0, j); for (i = 0; i < screen_size_x(s); i++) tty_putc(tty, ' '); } } } void tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i, j; tty_reset(tty); tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1); tty_cursor_pane(tty, ctx, 0, 0); if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { for (i = 0; i < ctx->ocy; i++) { tty_putcode(tty, TTYC_EL); tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1); tty->cy++; } } else { for (j = 0; j < ctx->ocy; j++) { tty_cursor_pane(tty, ctx, 0, j); for (i = 0; i < screen_size_x(s); i++) tty_putc(tty, ' '); } } for (i = 0; i <= ctx->ocx; i++) tty_putc(tty, ' '); } void tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i, j; tty_reset(tty); tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1); tty_cursor_pane(tty, ctx, 0, 0); if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { for (i = 0; i < screen_size_y(s); i++) { tty_putcode(tty, TTYC_EL); if (i != screen_size_y(s) - 1) { tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1); tty->cy++; } } } else { for (j = 0; j < screen_size_y(s); j++) { tty_cursor_pane(tty, ctx, 0, j); for (i = 0; i < screen_size_x(s); i++) tty_putc(tty, ' '); } } } void tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int i, j; tty_reset(tty); tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1); for (j = 0; j < screen_size_y(s); j++) { tty_cursor_pane(tty, ctx, 0, j); for (i = 0; i < screen_size_x(s); i++) tty_putc(tty, 'E'); } } void tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; struct screen *s = wp->screen; u_int cx; tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); /* Is the cursor in the very last position? */ if (ctx->ocx > wp->sx - ctx->last_width) { if (wp->xoff != 0 || wp->sx != tty->sx) { /* * The pane doesn't fill the entire line, the linefeed * will already have happened, so just move the cursor. */ tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1); } else if (tty->cx < tty->sx) { /* * The cursor isn't in the last position already, so * move as far left as possinble and redraw the last * cell to move into the last position. */ cx = screen_size_x(s) - ctx->last_width; tty_cursor_pane(tty, ctx, cx, ctx->ocy); tty_cell(tty, &ctx->last_cell, &ctx->last_utf8); } } else tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); tty_cell(tty, ctx->cell, ctx->utf8); } void tty_cmd_utf8character(struct tty *tty, const struct tty_ctx *ctx) { struct window_pane *wp = ctx->wp; /* * Cannot rely on not being a partial character, so just redraw the * whole line. */ tty_draw_line(tty, wp->screen, ctx->ocy, wp->xoff, wp->yoff); } void tty_cell( struct tty *tty, const struct grid_cell *gc, const struct grid_utf8 *gu) { u_int i; /* Skip last character if terminal is stupid. */ if (tty->term->flags & TERM_EARLYWRAP && tty->cy == tty->sy - 1 && tty->cx == tty->sx - 1) return; /* If this is a padding character, do nothing. */ if (gc->flags & GRID_FLAG_PADDING) return; /* Set the attributes. */ tty_attributes(tty, gc); /* If not UTF-8, write directly. */ if (!(gc->flags & GRID_FLAG_UTF8)) { if (gc->data < 0x20 || gc->data == 0x7f) return; tty_putc(tty, gc->data); return; } /* If the terminal doesn't support UTF-8, write underscores. */ if (!(tty->flags & TTY_UTF8)) { for (i = 0; i < gu->width; i++) tty_putc(tty, '_'); return; } /* Otherwise, write UTF-8. */ tty_pututf8(tty, gu); } void tty_reset(struct tty *tty) { struct grid_cell *gc = &tty->cell; if (memcmp(gc, &grid_default_cell, sizeof *gc) == 0) return; if (tty_term_has(tty->term, TTYC_RMACS) && gc->attr & GRID_ATTR_CHARSET) tty_putcode(tty, TTYC_RMACS); tty_putcode(tty, TTYC_SGR0); memcpy(gc, &grid_default_cell, sizeof *gc); } /* Set region inside pane. */ void tty_region_pane( struct tty *tty, const struct tty_ctx *ctx, u_int rupper, u_int rlower) { struct window_pane *wp = ctx->wp; tty_region(tty, wp->yoff + rupper, wp->yoff + rlower); } /* Set region at absolute position. */ void tty_region(struct tty *tty, u_int rupper, u_int rlower) { if (tty->rlower == rlower && tty->rupper == rupper) return; if (!tty_term_has(tty->term, TTYC_CSR)) return; tty->rupper = rupper; tty->rlower = rlower; /* * Some terminals (such as PuTTY) do not correctly reset the cursor to * 0,0 if it is beyond the last column (they do not reset their wrap * flag so further output causes a line feed). As a workaround, do an * explicit move to 0 first. */ if (tty->cx >= tty->sx) tty_cursor(tty, 0, tty->cy); tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); tty_cursor(tty, 0, 0); } /* Move cursor inside pane. */ void tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) { struct window_pane *wp = ctx->wp; tty_cursor(tty, wp->xoff + cx, wp->yoff + cy); } /* Move cursor to absolute position. */ void tty_cursor(struct tty *tty, u_int cx, u_int cy) { struct tty_term *term = tty->term; u_int thisx, thisy; int change; if (cx > tty->sx - 1) cx = tty->sx - 1; thisx = tty->cx; thisy = tty->cy; /* No change. */ if (cx == thisx && cy == thisy) return; /* Very end of the line, just use absolute movement. */ if (thisx > tty->sx - 1) goto absolute; /* Move to home position (0, 0). */ if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { tty_putcode(tty, TTYC_HOME); goto out; } /* Zero on the next line. */ if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower) { tty_putc(tty, '\r'); tty_putc(tty, '\n'); goto out; } /* Moving column or row. */ if (cy == thisy) { /* * Moving column only, row staying the same. */ /* To left edge. */ if (cx == 0) { tty_putc(tty, '\r'); goto out; } /* One to the left. */ if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { tty_putcode(tty, TTYC_CUB1); goto out; } /* One to the right. */ if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { tty_putcode(tty, TTYC_CUF1); goto out; } /* Calculate difference. */ change = thisx - cx; /* +ve left, -ve right */ /* * Use HPA if change is larger than absolute, otherwise move * the cursor with CUB/CUF. */ if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { tty_putcode1(tty, TTYC_HPA, cx); goto out; } else if (change > 0 && tty_term_has(term, TTYC_CUB)) { tty_putcode1(tty, TTYC_CUB, change); goto out; } else if (change < 0 && tty_term_has(term, TTYC_CUF)) { tty_putcode1(tty, TTYC_CUF, -change); goto out; } } else if (cx == thisx) { /* * Moving row only, column staying the same. */ /* One above. */ if (thisy != tty->rupper && cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { tty_putcode(tty, TTYC_CUU1); goto out; } /* One below. */ if (thisy != tty->rlower && cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { tty_putcode(tty, TTYC_CUD1); goto out; } /* Calculate difference. */ change = thisy - cy; /* +ve up, -ve down */ /* * Try to use VPA if change is larger than absolute or if this * change would cross the scroll region, otherwise use CUU/CUD. */ if ((u_int) abs(change) > cy || (change < 0 && cy - change > tty->rlower) || (change > 0 && cy - change < tty->rupper)) { if (tty_term_has(term, TTYC_VPA)) { tty_putcode1(tty, TTYC_VPA, cy); goto out; } } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { tty_putcode1(tty, TTYC_CUU, change); goto out; } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { tty_putcode1(tty, TTYC_CUD, -change); goto out; } } absolute: /* Absolute movement. */ tty_putcode2(tty, TTYC_CUP, cy, cx); out: tty->cx = cx; tty->cy = cy; } void tty_attributes(struct tty *tty, const struct grid_cell *gc) { struct grid_cell *tc = &tty->cell, gc2; u_char changed; memcpy(&gc2, gc, sizeof gc2); /* * If no setab, try to use the reverse attribute as a best-effort for a * non-default background. This is a bit of a hack but it doesn't do * any serious harm and makes a couple of applications happier. */ if (!tty_term_has(tty->term, TTYC_SETAB)) { if (gc2.attr & GRID_ATTR_REVERSE) { if (gc2.fg != 7 && gc2.fg != 8) gc2.attr &= ~GRID_ATTR_REVERSE; } else { if (gc2.bg != 0 && gc2.bg != 8) gc2.attr |= GRID_ATTR_REVERSE; } } /* Fix up the colours if necessary. */ tty_check_fg(tty, &gc2); tty_check_bg(tty, &gc2); /* If any bits are being cleared, reset everything. */ if (tc->attr & ~gc2.attr) tty_reset(tty); /* * Set the colours. This may call tty_reset() (so it comes next) and * may add to (NOT remove) the desired attributes by changing new_attr. */ tty_colours(tty, &gc2); /* Filter out attribute bits already set. */ changed = gc2.attr & ~tc->attr; tc->attr = gc2.attr; /* Set the attributes. */ if (changed & GRID_ATTR_BRIGHT) tty_putcode(tty, TTYC_BOLD); if (changed & GRID_ATTR_DIM) tty_putcode(tty, TTYC_DIM); if (changed & GRID_ATTR_ITALICS) tty_putcode(tty, TTYC_SMSO); if (changed & GRID_ATTR_UNDERSCORE) tty_putcode(tty, TTYC_SMUL); if (changed & GRID_ATTR_BLINK) tty_putcode(tty, TTYC_BLINK); if (changed & GRID_ATTR_REVERSE) { if (tty_term_has(tty->term, TTYC_REV)) tty_putcode(tty, TTYC_REV); else if (tty_term_has(tty->term, TTYC_SMSO)) tty_putcode(tty, TTYC_SMSO); } if (changed & GRID_ATTR_HIDDEN) tty_putcode(tty, TTYC_INVIS); if (changed & GRID_ATTR_CHARSET) tty_putcode(tty, TTYC_SMACS); } void tty_colours(struct tty *tty, const struct grid_cell *gc) { struct grid_cell *tc = &tty->cell; u_char fg = gc->fg, bg = gc->bg, flags = gc->flags; int have_ax, fg_default, bg_default; /* No changes? Nothing is necessary. */ if (fg == tc->fg && bg == tc->bg && ((flags ^ tc->flags) & (GRID_FLAG_FG256|GRID_FLAG_BG256)) == 0) return; /* * Is either the default colour? This is handled specially because the * best solution might be to reset both colours to default, in which * case if only one is default need to fall onward to set the other * colour. */ fg_default = (fg == 8 && !(flags & GRID_FLAG_FG256)); bg_default = (bg == 8 && !(flags & GRID_FLAG_BG256)); if (fg_default || bg_default) { /* * If don't have AX but do have op, send sgr0 (op can't * actually be used because it is sometimes the same as sgr0 * and sometimes isn't). This resets both colours to default. * * Otherwise, try to set the default colour only as needed. */ have_ax = tty_term_has(tty->term, TTYC_AX); if (!have_ax && tty_term_has(tty->term, TTYC_OP)) tty_reset(tty); else { if (fg_default && (tc->fg != 8 || tc->flags & GRID_FLAG_FG256)) { if (have_ax) tty_puts(tty, "\033[39m"); else if (tc->fg != 7 || tc->flags & GRID_FLAG_FG256) tty_putcode1(tty, TTYC_SETAF, 7); tc->fg = 8; tc->flags &= ~GRID_FLAG_FG256; } if (bg_default && (tc->bg != 8 || tc->flags & GRID_FLAG_BG256)) { if (have_ax) tty_puts(tty, "\033[49m"); else if (tc->bg != 0 || tc->flags & GRID_FLAG_BG256) tty_putcode1(tty, TTYC_SETAB, 0); tc->bg = 8; tc->flags &= ~GRID_FLAG_BG256; } } } /* Set the foreground colour. */ if (!fg_default && (fg != tc->fg || ((flags & GRID_FLAG_FG256) != (tc->flags & GRID_FLAG_FG256)))) tty_colours_fg(tty, gc); /* * Set the background colour. This must come after the foreground as * tty_colour_fg() can call tty_reset(). */ if (!bg_default && (bg != tc->bg || ((flags & GRID_FLAG_BG256) != (tc->flags & GRID_FLAG_BG256)))) tty_colours_bg(tty, gc); } void tty_check_fg(struct tty *tty, struct grid_cell *gc) { u_int colours; /* Is this a 256-colour colour? */ if (gc->flags & GRID_FLAG_FG256) { /* And not a 256 colour mode? */ if (!(tty->term->flags & TERM_88COLOURS) && !(tty->term_flags & TERM_88COLOURS) && !(tty->term->flags & TERM_256COLOURS) && !(tty->term_flags & TERM_256COLOURS)) { gc->fg = colour_256to16(gc->fg); if (gc->fg & 8) { gc->fg &= 7; gc->attr |= GRID_ATTR_BRIGHT; } else gc->attr &= ~GRID_ATTR_BRIGHT; gc->flags &= ~GRID_FLAG_FG256; } return; } /* Is this an aixterm colour? */ colours = tty_term_number(tty->term, TTYC_COLORS); if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { gc->fg -= 90; gc->attr |= GRID_ATTR_BRIGHT; } } void tty_check_bg(struct tty *tty, struct grid_cell *gc) { u_int colours; /* Is this a 256-colour colour? */ if (gc->flags & GRID_FLAG_BG256) { /* * And not a 256 colour mode? Translate to 16-colour * palette. Bold background doesn't exist portably, so just * discard the bold bit if set. */ if (!(tty->term->flags & TERM_88COLOURS) && !(tty->term_flags & TERM_88COLOURS) && !(tty->term->flags & TERM_256COLOURS) && !(tty->term_flags & TERM_256COLOURS)) { gc->bg = colour_256to16(gc->bg); if (gc->bg & 8) gc->bg &= 7; gc->attr &= ~GRID_ATTR_BRIGHT; gc->flags &= ~GRID_FLAG_BG256; } return; } /* Is this an aixterm colour? */ colours = tty_term_number(tty->term, TTYC_COLORS); if (gc->bg >= 100 && gc->bg <= 107 && colours < 16) { gc->bg -= 90; gc->attr |= GRID_ATTR_BRIGHT; } } void tty_colours_fg(struct tty *tty, const struct grid_cell *gc) { struct grid_cell *tc = &tty->cell; u_char fg = gc->fg; char s[32]; /* Is this a 256-colour colour? */ if (gc->flags & GRID_FLAG_FG256) { /* Try as 256 colours or translating to 88. */ if (tty_try_256(tty, fg, "38") == 0) goto save_fg; if (tty_try_88(tty, fg, "38") == 0) goto save_fg; /* Else already handled by tty_check_fg. */ return; } /* Is this an aixterm bright colour? */ if (fg >= 90 && fg <= 97) { xsnprintf(s, sizeof s, "\033[%dm", fg); tty_puts(tty, s); goto save_fg; } /* Otherwise set the foreground colour. */ tty_putcode1(tty, TTYC_SETAF, fg); save_fg: /* Save the new values in the terminal current cell. */ tc->fg = fg; tc->flags &= ~GRID_FLAG_FG256; tc->flags |= gc->flags & GRID_FLAG_FG256; } void tty_colours_bg(struct tty *tty, const struct grid_cell *gc) { struct grid_cell *tc = &tty->cell; u_char bg = gc->bg; char s[32]; /* Is this a 256-colour colour? */ if (gc->flags & GRID_FLAG_BG256) { /* Try as 256 colours or translating to 88. */ if (tty_try_256(tty, bg, "48") == 0) goto save_bg; if (tty_try_88(tty, bg, "48") == 0) goto save_bg; /* Else already handled by tty_check_bg. */ return; } /* Is this an aixterm bright colour? */ if (bg >= 100 && bg <= 107) { /* 16 colour terminals or above only. */ if (tty_term_number(tty->term, TTYC_COLORS) >= 16) { xsnprintf(s, sizeof s, "\033[%dm", bg); tty_puts(tty, s); goto save_bg; } bg -= 100; /* no such thing as a bold background */ } /* Otherwise set the background colour. */ tty_putcode1(tty, TTYC_SETAB, bg); save_bg: /* Save the new values in the terminal current cell. */ tc->bg = bg; tc->flags &= ~GRID_FLAG_BG256; tc->flags |= gc->flags & GRID_FLAG_BG256; } int tty_try_256(struct tty *tty, u_char colour, const char *type) { char s[32]; if (!(tty->term->flags & TERM_256COLOURS) && !(tty->term_flags & TERM_256COLOURS)) return (-1); xsnprintf(s, sizeof s, "\033[%s;5;%hhum", type, colour); tty_puts(tty, s); return (0); } int tty_try_88(struct tty *tty, u_char colour, const char *type) { char s[32]; if (!(tty->term->flags & TERM_88COLOURS) && !(tty->term_flags & TERM_88COLOURS)) return (-1); colour = colour_256to88(colour); xsnprintf(s, sizeof s, "\033[%s;5;%hhum", type, colour); tty_puts(tty, s); return (0); }