diff options
Diffstat (limited to 'tty.c')
| -rw-r--r-- | tty.c | 1076 |
1 files changed, 1076 insertions, 0 deletions
@@ -0,0 +1,1076 @@ +/* $OpenBSD$ */ + +/* + * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> + * + * 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 <sys/types.h> +#include <sys/ioctl.h> + +#include <errno.h> +#include <fcntl.h> +#include <string.h> +#include <termios.h> +#include <unistd.h> + +#include "tmux.h" + +void tty_fill_acs(struct tty *); + +void tty_raw(struct tty *, const char *); + +int tty_try_256(struct tty *, u_char, const char *); +int tty_try_88(struct tty *, u_char, const char *); + +void tty_attributes(struct tty *, const struct grid_cell *); +void tty_attributes_fg(struct tty *, const struct grid_cell *); +void tty_attributes_bg(struct tty *, const struct grid_cell *); + +void tty_cmd_cell(struct tty *, struct window_pane *, va_list); +void tty_cmd_clearendofline(struct tty *, struct window_pane *, va_list); +void tty_cmd_clearendofscreen(struct tty *, struct window_pane *, va_list); +void tty_cmd_clearline(struct tty *, struct window_pane *, va_list); +void tty_cmd_clearscreen(struct tty *, struct window_pane *, va_list); +void tty_cmd_clearstartofline(struct tty *, struct window_pane *, va_list); +void tty_cmd_clearstartofscreen(struct tty *, struct window_pane *, va_list); +void tty_cmd_deletecharacter(struct tty *, struct window_pane *, va_list); +void tty_cmd_deleteline(struct tty *, struct window_pane *, va_list); +void tty_cmd_insertcharacter(struct tty *, struct window_pane *, va_list); +void tty_cmd_insertline(struct tty *, struct window_pane *, va_list); +void tty_cmd_linefeed(struct tty *, struct window_pane *, va_list); +void tty_cmd_raw(struct tty *, struct window_pane *, va_list); +void tty_cmd_reverseindex(struct tty *, struct window_pane *, va_list); + +void (*tty_cmds[])(struct tty *, struct window_pane *, va_list) = { + tty_cmd_cell, + tty_cmd_clearendofline, + tty_cmd_clearendofscreen, + tty_cmd_clearline, + tty_cmd_clearscreen, + tty_cmd_clearstartofline, + tty_cmd_clearstartofscreen, + tty_cmd_deletecharacter, + tty_cmd_deleteline, + tty_cmd_insertcharacter, + tty_cmd_insertline, + tty_cmd_linefeed, + tty_cmd_raw, + tty_cmd_reverseindex, +}; + +void +tty_init(struct tty *tty, char *path, char *term) +{ + tty->path = xstrdup(path); + if (term == NULL) + tty->termname = xstrdup("unknown"); + else + tty->termname = xstrdup(term); + tty->flags = 0; + tty->term_flags = 0; +} + +int +tty_open(struct tty *tty, char **cause) +{ + int mode; + + tty->fd = open(tty->path, O_RDWR|O_NONBLOCK); + if (tty->fd == -1) { + xasprintf(cause, "%s: %s", tty->path, strerror(errno)); + return (-1); + } + + if ((mode = fcntl(tty->fd, F_GETFL)) == -1) + fatal("fcntl failed"); + if (fcntl(tty->fd, F_SETFL, mode|O_NONBLOCK) == -1) + fatal("fcntl failedo"); + if (fcntl(tty->fd, F_SETFD, FD_CLOEXEC) == -1) + fatal("fcntl failed"); + + if (debug_level > 3) + tty->log_fd = open("tmux.out", O_WRONLY|O_CREAT|O_TRUNC, 0644); + else + tty->log_fd = -1; + + if ((tty->term = tty_term_find(tty->termname, tty->fd, cause)) == NULL) + goto error; + + tty->in = buffer_create(BUFSIZ); + tty->out = buffer_create(BUFSIZ); + + tty->flags &= TTY_UTF8; + + tty_start_tty(tty); + + tty_keys_init(tty); + + tty_fill_acs(tty); + + return (0); + +error: + close(tty->fd); + tty->fd = -1; + + return (-1); +} + +void +tty_start_tty(struct tty *tty) +{ + struct termios tio; + int what; + + tty_detect_utf8(tty); + + 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"); + + what = 0; + if (ioctl(tty->fd, TIOCFLUSH, &what) != 0) + fatal("ioctl(TIOCFLUSH)"); + + tty_putcode(tty, TTYC_IS1); + tty_putcode(tty, TTYC_IS2); + tty_putcode(tty, TTYC_IS3); + + tty_putcode(tty, TTYC_SMCUP); + tty_putcode(tty, TTYC_SMKX); + 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"); + + memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); + + tty->cx = UINT_MAX; + tty->cy = UINT_MAX; + + tty->rlower = UINT_MAX; + tty->rupper = UINT_MAX; + + tty->mode = MODE_CURSOR; +} + +void +tty_stop_tty(struct tty *tty) +{ + struct winsize ws; + + /* + * 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_RMCUP)); + 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"); +} + +void +tty_detect_utf8(struct tty *tty) +{ + struct pollfd pfd; + char buf[7]; + size_t len; + ssize_t n; + int nfds; + struct termios tio, old_tio; + int what; + + if (tty->flags & TTY_UTF8) + return; + + /* + * If the terminal looks reasonably likely to support this, try to + * write a three-byte UTF-8 wide character to the terminal, then read + * the cursor position. + * + * XXX This entire function is a hack. + */ + + /* Check if the terminal looks sort of vt100. */ + if (strstr(tty_term_string(tty->term, TTYC_CLEAR), "[2J") == NULL || + strstr(tty_term_string(tty->term, TTYC_CUP), "H") == NULL) + return; + + if (tcgetattr(tty->fd, &old_tio) != 0) + fatal("tcgetattr failed"); + cfmakeraw(&tio); + if (tcsetattr(tty->fd, TCSANOW, &tio) != 0) + fatal("tcsetattr failed"); + + what = 0; + if (ioctl(tty->fd, TIOCFLUSH, &what) != 0) + fatal("ioctl(TIOCFLUSH)"); + +#define UTF8_TEST_DATA "\033[H\357\277\246\033[6n" + if (write(tty->fd, UTF8_TEST_DATA, (sizeof UTF8_TEST_DATA) - 1) == -1) + fatal("write failed"); +#undef UTF8_TEST_DATA + + len = 0; + for (;;) { + pfd.fd = tty->fd; + pfd.events = POLLIN; + + nfds = poll(&pfd, 1, 500); + if (nfds == -1) { + if (errno == EAGAIN || errno == EINTR) + continue; + fatal("poll failed"); + } + if (nfds == 0) + break; + if (pfd.revents & (POLLERR|POLLNVAL|POLLHUP)) + break; + if (!(pfd.revents & POLLIN)) + continue; + + if ((n = read(tty->fd, buf + len, 1)) != 1) + break; + buf[++len] = '\0'; + + if (len == (sizeof buf) - 1) { + if (strcmp(buf, "\033[1;3R") == 0) + tty->flags |= TTY_UTF8; + break; + } + } + + if (tcsetattr(tty->fd, TCSANOW, &old_tio) != 0) + fatal("tcsetattr failed"); +} + +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, int no_stop) +{ + if (tty->fd == -1) + return; + + if (tty->log_fd != -1) { + close(tty->log_fd); + tty->log_fd = -1; + } + + if (!no_stop) + tty_stop_tty(tty); + + tty_term_free(tty->term); + tty_keys_free(tty); + + close(tty->fd); + tty->fd = -1; + + buffer_destroy(tty->in); + buffer_destroy(tty->out); +} + +void +tty_free(struct tty *tty, int no_stop) +{ + tty_close(tty, no_stop); + + 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; + buffer_write(tty->out, 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); + buffer_write8(tty->out, ch); + + if (ch >= 0x20 && ch != 0x7f) { + sx = tty->sx; + if (tty->term->flags & TERM_EARLYWRAP) + sx--; + + if (tty->cx == sx) { + tty->cx = 0; + tty->cy++; + } else + tty->cx++; + } + + if (tty->log_fd != -1) + write(tty->log_fd, &ch, 1); +} + +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) { + if (mode & MODE_MOUSE) + tty_puts(tty, "\033[?1000h"); + else + tty_puts(tty, "\033[?1000l"); + } + 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, struct window_pane *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 (s->old_rupper - s->old_rlower >= screen_size_y(s) / 2) { + wp->flags |= PANE_REDRAW; + return; + } + + if (s->old_cy < s->old_rupper || s->old_cy > s->old_rlower) { + for (i = s->old_cy; i < screen_size_y(s); i++) + tty_draw_line(tty, s, i, wp->xoff, wp->yoff); + } else { + for (i = s->old_rupper; i <= s->old_rlower; 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; + const struct grid_utf8 *gu; + u_int i, sx; + + sx = screen_size_x(s); + if (sx > s->grid->size[s->grid->hsize + py]) + sx = s->grid->size[s->grid->hsize + py]; + if (sx > tty->sx) + sx = tty->sx; + + tty_cursor(tty, 0, py, ox, oy); + 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)) { + s->sel.cell.data = gc->data; + tty_cell(tty, &s->sel.cell, gu); + } else + tty_cell(tty, gc, gu); + } + + if (sx >= tty->sx) + return; + tty_reset(tty); + + tty_cursor(tty, sx, py, ox, oy); + 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, ' '); + } +} + +void +tty_write(struct tty *tty, struct window_pane *wp, enum tty_cmd cmd, ...) +{ + va_list ap; + + va_start(ap, cmd); + tty_vwrite(tty, wp, cmd, ap); + va_end(ap); +} + +void +tty_vwrite( + struct tty *tty, struct window_pane *wp, enum tty_cmd cmd, va_list ap) +{ + if (tty->flags & TTY_FREEZE || tty->term == NULL) + return; + if (tty_cmds[cmd] != NULL) + tty_cmds[cmd](tty, wp, ap); +} + +void +tty_cmd_insertcharacter(struct tty *tty, struct window_pane *wp, va_list ap) +{ + struct screen *s = wp->screen; + u_int ua; + + if (wp->xoff != 0 || screen_size_x(s) < tty->sx) { + tty_draw_line(tty, wp->screen, s->old_cy, wp->xoff, wp->yoff); + return; + } + + ua = va_arg(ap, u_int); + + tty_reset(tty); + + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + if (tty_term_has(tty->term, TTYC_ICH) || + tty_term_has(tty->term, TTYC_ICH1)) + tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ua); + else { + tty_putcode(tty, TTYC_SMIR); + while (ua-- > 0) + tty_putc(tty, ' '); + tty_putcode(tty, TTYC_RMIR); + } +} + +void +tty_cmd_deletecharacter(struct tty *tty, struct window_pane *wp, va_list ap) +{ + struct screen *s = wp->screen; + u_int ua; + + if (wp->xoff != 0 || screen_size_x(s) < tty->sx) { + tty_draw_line(tty, wp->screen, s->old_cy, wp->xoff, wp->yoff); + return; + } + + ua = va_arg(ap, u_int); + + tty_reset(tty); + + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ua); +} + +void +tty_cmd_insertline(struct tty *tty, struct window_pane *wp, va_list ap) +{ + struct screen *s = wp->screen; + u_int ua; + + if (wp->xoff != 0 || screen_size_x(s) < tty->sx || + !tty_term_has(tty->term, TTYC_CSR)) { + tty_redraw_region(tty, wp); + return; + } + + ua = va_arg(ap, u_int); + + tty_reset(tty); + + tty_region(tty, s->old_rupper, s->old_rlower, wp->yoff); + + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ua); +} + +void +tty_cmd_deleteline(struct tty *tty, struct window_pane *wp, va_list ap) +{ + struct screen *s = wp->screen; + u_int ua; + + if (wp->xoff != 0 || screen_size_x(s) < tty->sx || + !tty_term_has(tty->term, TTYC_CSR)) { + tty_redraw_region(tty, wp); + return; + } + + ua = va_arg(ap, u_int); + + tty_reset(tty); + + tty_region(tty, s->old_rupper, s->old_rlower, wp->yoff); + + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ua); +} + +void +tty_cmd_clearline(struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + u_int i; + + tty_reset(tty); + + tty_cursor(tty, 0, s->old_cy, wp->xoff, wp->yoff); + 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, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + u_int i; + + tty_reset(tty); + + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + 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 = s->old_cx; i < screen_size_x(s); i++) + tty_putc(tty, ' '); + } +} + +void +tty_cmd_clearstartofline( + struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + u_int i; + + tty_reset(tty); + + if (wp->xoff == 0 && tty_term_has(tty->term, TTYC_EL1)) { + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + tty_putcode(tty, TTYC_EL1); + } else { + tty_cursor(tty, 0, s->old_cy, wp->xoff, wp->yoff); + for (i = 0; i < s->old_cx + 1; i++) + tty_putc(tty, ' '); + } +} + +void +tty_cmd_reverseindex(struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + + if (wp->xoff != 0 || screen_size_x(s) < tty->sx || + !tty_term_has(tty->term, TTYC_CSR)) { + tty_redraw_region(tty, wp); + return; + } + + tty_reset(tty); + + tty_region(tty, s->old_rupper, s->old_rlower, wp->yoff); + + if (s->old_cy == s->old_rupper) { + tty_cursor(tty, s->old_cx, s->old_rupper, wp->xoff, wp->yoff); + tty_putcode(tty, TTYC_RI); + } +} + +void +tty_cmd_linefeed(struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + + if (wp->xoff != 0 || screen_size_x(s) < tty->sx || + !tty_term_has(tty->term, TTYC_CSR)) { + tty_redraw_region(tty, wp); + return; + } + + tty_reset(tty); + + tty_region(tty, s->old_rupper, s->old_rlower, wp->yoff); + + if (s->old_cy == s->old_rlower) { + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + tty_putc(tty, '\n'); + } +} + +void +tty_cmd_clearendofscreen( + struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + u_int i, j, oy; + + oy = wp->yoff; + + tty_reset(tty); + + tty_region(tty, 0, screen_size_y(s) - 1, wp->yoff); + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && + tty_term_has(tty->term, TTYC_EL)) { + tty_putcode(tty, TTYC_EL); + if (s->old_cy != screen_size_y(s) - 1) { + tty_cursor(tty, 0, s->old_cy + 1, wp->xoff, wp->yoff); + for (i = s->old_cy + 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 = s->old_cx; i < screen_size_x(s); i++) + tty_putc(tty, ' '); + for (j = s->old_cy; j < screen_size_y(s); j++) { + tty_cursor(tty, 0, j, wp->xoff, wp->yoff); + for (i = 0; i < screen_size_x(s); i++) + tty_putc(tty, ' '); + } + } +} + +void +tty_cmd_clearstartofscreen( + struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + u_int i, j; + + tty_reset(tty); + + tty_region(tty, 0, screen_size_y(s) - 1, wp->yoff); + tty_cursor(tty, 0, 0, wp->xoff, wp->yoff); + if (wp->xoff == 0 && screen_size_x(s) >= tty->sx && + tty_term_has(tty->term, TTYC_EL)) { + for (i = 0; i < s->old_cy; i++) { + tty_putcode(tty, TTYC_EL); + tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1); + tty->cy++; + } + } else { + for (j = 0; j < s->old_cy; j++) { + tty_cursor(tty, 0, j, wp->xoff, wp->yoff); + for (i = 0; i < screen_size_x(s); i++) + tty_putc(tty, ' '); + } + } + for (i = 0; i < s->old_cx; i++) + tty_putc(tty, ' '); +} + +void +tty_cmd_clearscreen( + struct tty *tty, struct window_pane *wp, unused va_list ap) +{ + struct screen *s = wp->screen; + u_int i, j; + + tty_reset(tty); + + tty_region(tty, 0, screen_size_y(s) - 1, wp->yoff); + tty_cursor(tty, 0, 0, wp->xoff, wp->yoff); + 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(tty, 0, j, wp->xoff, wp->yoff); + for (i = 0; i < screen_size_x(s); i++) + tty_putc(tty, ' '); + } + } +} + +void +tty_cmd_cell(struct tty *tty, struct window_pane *wp, va_list ap) +{ + struct screen *s = wp->screen; + struct grid_cell *gc; + struct grid_utf8 *gu; + + gc = va_arg(ap, struct grid_cell *); + gu = va_arg(ap, struct grid_utf8 *); + + tty_cursor(tty, s->old_cx, s->old_cy, wp->xoff, wp->yoff); + + tty_cell(tty, gc, gu); +} + +void +tty_cmd_raw(struct tty *tty, unused struct window_pane *wp, va_list ap) +{ + u_char *buf; + size_t i, len; + + buf = va_arg(ap, u_char *); + len = va_arg(ap, size_t); + + for (i = 0; i < len; i++) + tty_putc(tty, buf[i]); +} + +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. */ + for (i = 0; i < UTF8_SIZE; i++) { + if (gu->data[i] == 0xff) + break; + tty_putc(tty, gu->data[i]); + } +} + +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); +} + +void +tty_region(struct tty *tty, u_int rupper, u_int rlower, u_int oy) +{ + if (!tty_term_has(tty->term, TTYC_CSR)) + return; + if (tty->rlower != oy + rlower || tty->rupper != oy + rupper) { + tty->rlower = oy + rlower; + tty->rupper = oy + rupper; + tty->cx = 0; + tty->cy = 0; + tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); + } +} + +void +tty_cursor(struct tty *tty, u_int cx, u_int cy, u_int ox, u_int oy) +{ + if (ox + cx == 0 && tty->cx != 0 && tty->cy == oy + cy) { + tty->cx = 0; + tty_putc(tty, '\r'); + } else if (tty->cx != ox + cx || tty->cy != oy + cy) { + tty->cx = ox + cx; + tty->cy = oy + cy; + tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx); + } +} + +void +tty_attributes(struct tty *tty, const struct grid_cell *gc) +{ + struct grid_cell *tc = &tty->cell; + u_char changed; + u_int fg, bg; + + /* If any bits are being cleared, reset everything. */ + if (tc->attr & ~gc->attr) + tty_reset(tty); + + /* Filter out attribute bits already set. */ + changed = gc->attr & ~tc->attr; + tc->attr = gc->attr; + + /* Set the attributes. */ + fg = gc->fg; + bg = gc->bg; + 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); + + /* Set foreground colour. */ + if (fg != tc->fg || + (gc->flags & GRID_FLAG_FG256) != (tc->flags & GRID_FLAG_FG256)) { + tty_attributes_fg(tty, gc); + tc->fg = fg; + } + + /* Set background colour. */ + if (bg != tc->bg || + (gc->flags & GRID_FLAG_BG256) != (tc->flags & GRID_FLAG_BG256)) { + tty_attributes_bg(tty, gc); + tc->bg = bg; + } +} + +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); +} + +void +tty_attributes_fg(struct tty *tty, const struct grid_cell *gc) +{ + u_char fg; + + fg = gc->fg; + if (gc->flags & GRID_FLAG_FG256) { + if (tty_try_256(tty, fg, "38") == 0) + return; + if (tty_try_88(tty, fg, "38") == 0) + return; + fg = colour_256to16(fg); + if (fg & 8) { + fg &= 7; + tty_putcode(tty, TTYC_BOLD); + tty->cell.attr |= GRID_ATTR_BRIGHT; + } else if (tty->cell.attr & GRID_ATTR_BRIGHT) + tty_reset(tty); + } + + if (fg == 8 && + !(tty->term->flags & TERM_HASDEFAULTS) && + !(tty->term_flags & TERM_HASDEFAULTS)) + fg = 7; + if (fg == 8) + tty_puts(tty, "\033[39m"); + else + tty_putcode1(tty, TTYC_SETAF, fg); +} + +void +tty_attributes_bg(struct tty *tty, const struct grid_cell *gc) +{ + u_char bg; + + bg = gc->bg; + if (gc->flags & GRID_FLAG_BG256) { + if (tty_try_256(tty, bg, "48") == 0) + return; + if (tty_try_88(tty, bg, "48") == 0) + return; + bg = colour_256to16(bg); + if (bg & 8) + bg &= 7; + } + + if (bg == 8 && + !(tty->term->flags & TERM_HASDEFAULTS) && + !(tty->term_flags & TERM_HASDEFAULTS)) + bg = 0; + if (bg == 8) + tty_puts(tty, "\033[49m"); + else + tty_putcode1(tty, TTYC_SETAB, bg); +} |