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teken_subr.h
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008-2009 Ed Schouten <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
static void teken_subr_cursor_up(teken_t *, unsigned int);
static void teken_subr_erase_line(teken_t *, unsigned int);
static void teken_subr_regular_character(teken_t *, teken_char_t);
static void teken_subr_reset_to_initial_state(teken_t *);
static void teken_subr_save_cursor(teken_t *);
static inline int
teken_tab_isset(teken_t *t, unsigned int col)
{
unsigned int b, o;
if (col >= T_NUMCOL)
return ((col % 8) == 0);
b = col / (sizeof(unsigned int) * 8);
o = col % (sizeof(unsigned int) * 8);
return (t->t_tabstops[b] & (1 << o));
}
static inline void
teken_tab_clear(teken_t *t, unsigned int col)
{
unsigned int b, o;
if (col >= T_NUMCOL)
return;
b = col / (sizeof(unsigned int) * 8);
o = col % (sizeof(unsigned int) * 8);
t->t_tabstops[b] &= ~(1 << o);
}
static inline void
teken_tab_set(teken_t *t, unsigned int col)
{
unsigned int b, o;
if (col >= T_NUMCOL)
return;
b = col / (sizeof(unsigned int) * 8);
o = col % (sizeof(unsigned int) * 8);
t->t_tabstops[b] |= 1 << o;
}
static void
teken_tab_default(teken_t *t)
{
unsigned int i;
memset(&t->t_tabstops, 0, T_NUMCOL / 8);
for (i = 8; i < T_NUMCOL; i += 8)
teken_tab_set(t, i);
}
static void
teken_subr_do_scroll(teken_t *t, int amount)
{
teken_rect_t tr;
teken_pos_t tp;
teken_assert(t->t_cursor.tp_row <= t->t_winsize.tp_row);
teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);
teken_assert(amount != 0);
/* Copy existing data 1 line up. */
if (amount > 0) {
/* Scroll down. */
/* Copy existing data up. */
if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) {
tr.tr_begin.tp_row = t->t_scrollreg.ts_begin + amount;
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_row = t->t_scrollreg.ts_end;
tr.tr_end.tp_col = t->t_winsize.tp_col;
tp.tp_row = t->t_scrollreg.ts_begin;
tp.tp_col = 0;
teken_funcs_copy(t, &tr, &tp);
tr.tr_begin.tp_row = t->t_scrollreg.ts_end - amount;
} else {
tr.tr_begin.tp_row = t->t_scrollreg.ts_begin;
}
/* Clear the last lines. */
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_row = t->t_scrollreg.ts_end;
tr.tr_end.tp_col = t->t_winsize.tp_col;
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
} else {
/* Scroll up. */
amount = -amount;
/* Copy existing data down. */
if (t->t_scrollreg.ts_begin + amount < t->t_scrollreg.ts_end) {
tr.tr_begin.tp_row = t->t_scrollreg.ts_begin;
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_row = t->t_scrollreg.ts_end - amount;
tr.tr_end.tp_col = t->t_winsize.tp_col;
tp.tp_row = t->t_scrollreg.ts_begin + amount;
tp.tp_col = 0;
teken_funcs_copy(t, &tr, &tp);
tr.tr_end.tp_row = t->t_scrollreg.ts_begin + amount;
} else {
tr.tr_end.tp_row = t->t_scrollreg.ts_end;
}
/* Clear the first lines. */
tr.tr_begin.tp_row = t->t_scrollreg.ts_begin;
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_col = t->t_winsize.tp_col;
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
}
}
static ssize_t
teken_subr_do_cpr(teken_t *t, unsigned int cmd, char response[16])
{
switch (cmd) {
case 5: /* Operating status. */
strcpy(response, "0n");
return (2);
case 6: { /* Cursor position. */
int len;
len = snprintf(response, 16, "%u;%uR",
(t->t_cursor.tp_row - t->t_originreg.ts_begin) + 1,
t->t_cursor.tp_col + 1);
if (len >= 16)
return (-1);
return (len);
}
case 15: /* Printer status. */
strcpy(response, "13n");
return (3);
case 25: /* UDK status. */
strcpy(response, "20n");
return (3);
case 26: /* Keyboard status. */
strcpy(response, "27;1n");
return (5);
default:
teken_printf("Unknown DSR\n");
return (-1);
}
}
static void
teken_subr_alignment_test(teken_t *t)
{
teken_rect_t tr;
t->t_cursor.tp_row = t->t_cursor.tp_col = 0;
t->t_scrollreg.ts_begin = 0;
t->t_scrollreg.ts_end = t->t_winsize.tp_row;
t->t_originreg = t->t_scrollreg;
t->t_stateflags &= ~(TS_WRAPPED|TS_ORIGIN);
teken_funcs_cursor(t);
tr.tr_begin.tp_row = 0;
tr.tr_begin.tp_col = 0;
tr.tr_end = t->t_winsize;
teken_funcs_fill(t, &tr, 'E', &t->t_defattr);
}
static void
teken_subr_backspace(teken_t *t)
{
if (t->t_stateflags & TS_CONS25) {
if (t->t_cursor.tp_col == 0) {
if (t->t_cursor.tp_row == t->t_originreg.ts_begin)
return;
t->t_cursor.tp_row--;
t->t_cursor.tp_col = t->t_winsize.tp_col - 1;
} else {
t->t_cursor.tp_col--;
}
} else {
if (t->t_cursor.tp_col == 0)
return;
t->t_cursor.tp_col--;
t->t_stateflags &= ~TS_WRAPPED;
}
teken_funcs_cursor(t);
}
static void
teken_subr_bell(teken_t *t)
{
teken_funcs_bell(t);
}
static void
teken_subr_carriage_return(teken_t *t)
{
t->t_cursor.tp_col = 0;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_backward(teken_t *t, unsigned int ncols)
{
if (ncols > t->t_cursor.tp_col)
t->t_cursor.tp_col = 0;
else
t->t_cursor.tp_col -= ncols;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_backward_tabulation(teken_t *t, unsigned int ntabs)
{
do {
/* Stop when we've reached the beginning of the line. */
if (t->t_cursor.tp_col == 0)
break;
t->t_cursor.tp_col--;
/* Tab marker set. */
if (teken_tab_isset(t, t->t_cursor.tp_col))
ntabs--;
} while (ntabs > 0);
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_down(teken_t *t, unsigned int nrows)
{
if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end)
t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1;
else
t->t_cursor.tp_row += nrows;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_forward(teken_t *t, unsigned int ncols)
{
if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col)
t->t_cursor.tp_col = t->t_winsize.tp_col - 1;
else
t->t_cursor.tp_col += ncols;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_forward_tabulation(teken_t *t, unsigned int ntabs)
{
do {
/* Stop when we've reached the end of the line. */
if (t->t_cursor.tp_col == t->t_winsize.tp_col - 1)
break;
t->t_cursor.tp_col++;
/* Tab marker set. */
if (teken_tab_isset(t, t->t_cursor.tp_col))
ntabs--;
} while (ntabs > 0);
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_next_line(teken_t *t, unsigned int ncols)
{
t->t_cursor.tp_col = 0;
teken_subr_cursor_down(t, ncols);
}
static void
teken_subr_cursor_position(teken_t *t, unsigned int row, unsigned int col)
{
row = row - 1 + t->t_originreg.ts_begin;
t->t_cursor.tp_row = row < t->t_originreg.ts_end ?
row : t->t_originreg.ts_end - 1;
col--;
t->t_cursor.tp_col = col < t->t_winsize.tp_col ?
col : t->t_winsize.tp_col - 1;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_position_report(teken_t *t, unsigned int cmd)
{
char response[18] = "\x1B[";
ssize_t len;
len = teken_subr_do_cpr(t, cmd, response + 2);
if (len < 0)
return;
teken_funcs_respond(t, response, len + 2);
}
static void
teken_subr_cursor_previous_line(teken_t *t, unsigned int ncols)
{
t->t_cursor.tp_col = 0;
teken_subr_cursor_up(t, ncols);
}
static void
teken_subr_cursor_up(teken_t *t, unsigned int nrows)
{
if (t->t_scrollreg.ts_begin + nrows >= t->t_cursor.tp_row)
t->t_cursor.tp_row = t->t_scrollreg.ts_begin;
else
t->t_cursor.tp_row -= nrows;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_delete_character(teken_t *t, unsigned int ncols)
{
teken_rect_t tr;
tr.tr_begin.tp_row = t->t_cursor.tp_row;
tr.tr_end.tp_row = t->t_cursor.tp_row + 1;
tr.tr_end.tp_col = t->t_winsize.tp_col;
if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) {
tr.tr_begin.tp_col = t->t_cursor.tp_col;
} else {
/* Copy characters to the left. */
tr.tr_begin.tp_col = t->t_cursor.tp_col + ncols;
teken_funcs_copy(t, &tr, &t->t_cursor);
tr.tr_begin.tp_col = t->t_winsize.tp_col - ncols;
}
/* Blank trailing columns. */
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
}
static void
teken_subr_delete_line(teken_t *t, unsigned int nrows)
{
teken_rect_t tr;
/* Ignore if outside scrolling region. */
if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin ||
t->t_cursor.tp_row >= t->t_scrollreg.ts_end)
return;
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_row = t->t_scrollreg.ts_end;
tr.tr_end.tp_col = t->t_winsize.tp_col;
if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) {
tr.tr_begin.tp_row = t->t_cursor.tp_row;
} else {
teken_pos_t tp;
/* Copy rows up. */
tr.tr_begin.tp_row = t->t_cursor.tp_row + nrows;
tp.tp_row = t->t_cursor.tp_row;
tp.tp_col = 0;
teken_funcs_copy(t, &tr, &tp);
tr.tr_begin.tp_row = t->t_scrollreg.ts_end - nrows;
}
/* Blank trailing rows. */
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
}
static void
teken_subr_device_control_string(teken_t *t)
{
teken_printf("Unsupported device control string\n");
t->t_stateflags |= TS_INSTRING;
}
static void
teken_subr_device_status_report(teken_t *t, unsigned int cmd)
{
char response[19] = "\x1B[?";
ssize_t len;
len = teken_subr_do_cpr(t, cmd, response + 3);
if (len < 0)
return;
teken_funcs_respond(t, response, len + 3);
}
static void
teken_subr_double_height_double_width_line_top(teken_t *t __unused)
{
teken_printf("double height double width top\n");
}
static void
teken_subr_double_height_double_width_line_bottom(teken_t *t __unused)
{
teken_printf("double height double width bottom\n");
}
static void
teken_subr_erase_character(teken_t *t, unsigned int ncols)
{
teken_rect_t tr;
tr.tr_begin = t->t_cursor;
tr.tr_end.tp_row = t->t_cursor.tp_row + 1;
if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col)
tr.tr_end.tp_col = t->t_winsize.tp_col;
else
tr.tr_end.tp_col = t->t_cursor.tp_col + ncols;
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
}
static void
teken_subr_erase_display(teken_t *t, unsigned int mode)
{
teken_rect_t r;
r.tr_begin.tp_col = 0;
r.tr_end.tp_col = t->t_winsize.tp_col;
switch (mode) {
case 1: /* Erase from the top to the cursor. */
teken_subr_erase_line(t, 1);
/* Erase lines above. */
if (t->t_cursor.tp_row == 0)
return;
r.tr_begin.tp_row = 0;
r.tr_end.tp_row = t->t_cursor.tp_row;
break;
case 2: /* Erase entire display. */
r.tr_begin.tp_row = 0;
r.tr_end.tp_row = t->t_winsize.tp_row;
break;
default: /* Erase from cursor to the bottom. */
teken_subr_erase_line(t, 0);
/* Erase lines below. */
if (t->t_cursor.tp_row == t->t_winsize.tp_row - 1)
return;
r.tr_begin.tp_row = t->t_cursor.tp_row + 1;
r.tr_end.tp_row = t->t_winsize.tp_row;
break;
}
teken_funcs_fill(t, &r, BLANK, &t->t_curattr);
}
static void
teken_subr_erase_line(teken_t *t, unsigned int mode)
{
teken_rect_t r;
r.tr_begin.tp_row = t->t_cursor.tp_row;
r.tr_end.tp_row = t->t_cursor.tp_row + 1;
switch (mode) {
case 1: /* Erase from the beginning of the line to the cursor. */
r.tr_begin.tp_col = 0;
r.tr_end.tp_col = t->t_cursor.tp_col + 1;
break;
case 2: /* Erase entire line. */
r.tr_begin.tp_col = 0;
r.tr_end.tp_col = t->t_winsize.tp_col;
break;
default: /* Erase from cursor to the end of the line. */
r.tr_begin.tp_col = t->t_cursor.tp_col;
r.tr_end.tp_col = t->t_winsize.tp_col;
break;
}
teken_funcs_fill(t, &r, BLANK, &t->t_curattr);
}
static void
teken_subr_g0_scs_special_graphics(teken_t *t __unused)
{
t->t_scs[0] = teken_scs_special_graphics;
}
static void
teken_subr_g0_scs_uk_national(teken_t *t __unused)
{
t->t_scs[0] = teken_scs_uk_national;
}
static void
teken_subr_g0_scs_us_ascii(teken_t *t __unused)
{
t->t_scs[0] = teken_scs_us_ascii;
}
static void
teken_subr_g1_scs_special_graphics(teken_t *t __unused)
{
t->t_scs[1] = teken_scs_special_graphics;
}
static void
teken_subr_g1_scs_uk_national(teken_t *t __unused)
{
t->t_scs[1] = teken_scs_uk_national;
}
static void
teken_subr_g1_scs_us_ascii(teken_t *t __unused)
{
t->t_scs[1] = teken_scs_us_ascii;
}
static void
teken_subr_horizontal_position_absolute(teken_t *t, unsigned int col)
{
col--;
t->t_cursor.tp_col = col < t->t_winsize.tp_col ?
col : t->t_winsize.tp_col - 1;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_horizontal_tab(teken_t *t)
{
teken_subr_cursor_forward_tabulation(t, 1);
}
static void
teken_subr_horizontal_tab_set(teken_t *t)
{
teken_tab_set(t, t->t_cursor.tp_col);
}
static void
teken_subr_index(teken_t *t)
{
if (t->t_cursor.tp_row < t->t_scrollreg.ts_end - 1) {
t->t_cursor.tp_row++;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
} else {
teken_subr_do_scroll(t, 1);
}
}
static void
teken_subr_insert_character(teken_t *t, unsigned int ncols)
{
teken_rect_t tr;
tr.tr_begin = t->t_cursor;
tr.tr_end.tp_row = t->t_cursor.tp_row + 1;
if (t->t_cursor.tp_col + ncols >= t->t_winsize.tp_col) {
tr.tr_end.tp_col = t->t_winsize.tp_col;
} else {
teken_pos_t tp;
/* Copy characters to the right. */
tr.tr_end.tp_col = t->t_winsize.tp_col - ncols;
tp.tp_row = t->t_cursor.tp_row;
tp.tp_col = t->t_cursor.tp_col + ncols;
teken_funcs_copy(t, &tr, &tp);
tr.tr_end.tp_col = t->t_cursor.tp_col + ncols;
}
/* Blank current location. */
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
}
static void
teken_subr_insert_line(teken_t *t, unsigned int nrows)
{
teken_rect_t tr;
/* Ignore if outside scrolling region. */
if (t->t_cursor.tp_row < t->t_scrollreg.ts_begin ||
t->t_cursor.tp_row >= t->t_scrollreg.ts_end)
return;
tr.tr_begin.tp_row = t->t_cursor.tp_row;
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_col = t->t_winsize.tp_col;
if (t->t_cursor.tp_row + nrows >= t->t_scrollreg.ts_end) {
tr.tr_end.tp_row = t->t_scrollreg.ts_end;
} else {
teken_pos_t tp;
/* Copy lines down. */
tr.tr_end.tp_row = t->t_scrollreg.ts_end - nrows;
tp.tp_row = t->t_cursor.tp_row + nrows;
tp.tp_col = 0;
teken_funcs_copy(t, &tr, &tp);
tr.tr_end.tp_row = t->t_cursor.tp_row + nrows;
}
/* Blank current location. */
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
}
static void
teken_subr_keypad_application_mode(teken_t *t)
{
teken_funcs_param(t, TP_KEYPADAPP, 1);
}
static void
teken_subr_keypad_numeric_mode(teken_t *t)
{
teken_funcs_param(t, TP_KEYPADAPP, 0);
}
static void
teken_subr_newline(teken_t *t)
{
t->t_cursor.tp_row++;
if (t->t_cursor.tp_row >= t->t_scrollreg.ts_end) {
teken_subr_do_scroll(t, 1);
t->t_cursor.tp_row = t->t_scrollreg.ts_end - 1;
}
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
}
static void
teken_subr_newpage(teken_t *t)
{
if (t->t_stateflags & TS_CONS25) {
teken_rect_t tr;
/* Clear screen. */
tr.tr_begin.tp_row = t->t_originreg.ts_begin;
tr.tr_begin.tp_col = 0;
tr.tr_end.tp_row = t->t_originreg.ts_end;
tr.tr_end.tp_col = t->t_winsize.tp_col;
teken_funcs_fill(t, &tr, BLANK, &t->t_curattr);
/* Cursor at top left. */
t->t_cursor.tp_row = t->t_originreg.ts_begin;
t->t_cursor.tp_col = 0;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
} else {
teken_subr_newline(t);
}
}
static void
teken_subr_next_line(teken_t *t)
{
t->t_cursor.tp_col = 0;
teken_subr_newline(t);
}
static void
teken_subr_operating_system_command(teken_t *t)
{
teken_printf("Unsupported operating system command\n");
t->t_stateflags |= TS_INSTRING;
}
static void
teken_subr_pan_down(teken_t *t, unsigned int nrows)
{
teken_subr_do_scroll(t, (int)nrows);
}
static void
teken_subr_pan_up(teken_t *t, unsigned int nrows)
{
teken_subr_do_scroll(t, -(int)nrows);
}
static void
teken_subr_primary_device_attributes(teken_t *t, unsigned int request)
{
if (request == 0) {
const char response[] = "\x1B[?1;2c";
teken_funcs_respond(t, response, sizeof response - 1);
} else {
teken_printf("Unknown DA1\n");
}
}
static void
teken_subr_do_putchar(teken_t *t, const teken_pos_t *tp, teken_char_t c,
int width)
{
if (t->t_stateflags & TS_INSERT &&
tp->tp_col < t->t_winsize.tp_col - width) {
teken_rect_t ctr;
teken_pos_t ctp;
/* Insert mode. Move existing characters to the right. */
ctr.tr_begin = *tp;
ctr.tr_end.tp_row = tp->tp_row + 1;
ctr.tr_end.tp_col = t->t_winsize.tp_col - width;
ctp.tp_row = tp->tp_row;
ctp.tp_col = tp->tp_col + width;
teken_funcs_copy(t, &ctr, &ctp);
}
teken_funcs_putchar(t, tp, c, &t->t_curattr);
if (width == 2 && tp->tp_col + 1 < t->t_winsize.tp_col) {
teken_pos_t tp2;
teken_attr_t attr;
/* Print second half of CJK fullwidth character. */
tp2.tp_row = tp->tp_row;
tp2.tp_col = tp->tp_col + 1;
attr = t->t_curattr;
attr.ta_format |= TF_CJK_RIGHT;
teken_funcs_putchar(t, &tp2, c, &attr);
}
}
static void
teken_subr_regular_character(teken_t *t, teken_char_t c)
{
int width;
if (t->t_stateflags & TS_8BIT) {
if (!(t->t_stateflags & TS_CONS25) && (c <= 0x1b || c == 0x7f))
return;
c = teken_scs_process(t, c);
width = 1;
} else {
c = teken_scs_process(t, c);
width = teken_wcwidth(c);
/* XXX: Don't process zero-width characters yet. */
if (width <= 0)
return;
}
if (t->t_stateflags & TS_CONS25) {
teken_subr_do_putchar(t, &t->t_cursor, c, width);
t->t_cursor.tp_col += width;
if (t->t_cursor.tp_col >= t->t_winsize.tp_col) {
if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) {
/* Perform scrolling. */
teken_subr_do_scroll(t, 1);
} else {
/* No scrolling needed. */
if (t->t_cursor.tp_row <
t->t_winsize.tp_row - 1)
t->t_cursor.tp_row++;
}
t->t_cursor.tp_col = 0;
}
} else if (t->t_stateflags & TS_AUTOWRAP &&
((t->t_stateflags & TS_WRAPPED &&
t->t_cursor.tp_col + 1 == t->t_winsize.tp_col) ||
t->t_cursor.tp_col + width > t->t_winsize.tp_col)) {
teken_pos_t tp;
/*
* Perform line wrapping, if:
* - Autowrapping is enabled, and
* - We're in the wrapped state at the last column, or
* - The character to be printed does not fit anymore.
*/
if (t->t_cursor.tp_row == t->t_scrollreg.ts_end - 1) {
/* Perform scrolling. */
teken_subr_do_scroll(t, 1);
tp.tp_row = t->t_scrollreg.ts_end - 1;
} else {
/* No scrolling needed. */
tp.tp_row = t->t_cursor.tp_row + 1;
if (tp.tp_row == t->t_winsize.tp_row) {
/*
* Corner case: regular character
* outside scrolling region, but at the
* bottom of the screen.
*/
teken_subr_do_putchar(t, &t->t_cursor,
c, width);
return;
}
}
tp.tp_col = 0;
teken_subr_do_putchar(t, &tp, c, width);
t->t_cursor.tp_row = tp.tp_row;
t->t_cursor.tp_col = width;
t->t_stateflags &= ~TS_WRAPPED;
} else {
/* No line wrapping needed. */
teken_subr_do_putchar(t, &t->t_cursor, c, width);
t->t_cursor.tp_col += width;
if (t->t_cursor.tp_col >= t->t_winsize.tp_col) {
t->t_stateflags |= TS_WRAPPED;
t->t_cursor.tp_col = t->t_winsize.tp_col - 1;
} else {
t->t_stateflags &= ~TS_WRAPPED;
}
}
teken_funcs_cursor(t);
}
static void
teken_subr_reset_dec_mode(teken_t *t, unsigned int cmd)
{
switch (cmd) {
case 1: /* Cursor keys mode. */
t->t_stateflags &= ~TS_CURSORKEYS;
break;
case 2: /* DECANM: ANSI/VT52 mode. */
teken_printf("DECRST VT52\n");
break;
case 3: /* 132 column mode. */
teken_funcs_param(t, TP_132COLS, 0);
teken_subr_reset_to_initial_state(t);
break;
case 5: /* Inverse video. */
teken_printf("DECRST inverse video\n");
break;
case 6: /* Origin mode. */
t->t_stateflags &= ~TS_ORIGIN;
t->t_originreg.ts_begin = 0;
t->t_originreg.ts_end = t->t_winsize.tp_row;
t->t_cursor.tp_row = t->t_cursor.tp_col = 0;
t->t_stateflags &= ~TS_WRAPPED;
teken_funcs_cursor(t);
break;
case 7: /* Autowrap mode. */
t->t_stateflags &= ~TS_AUTOWRAP;
break;
case 8: /* Autorepeat mode. */
teken_funcs_param(t, TP_AUTOREPEAT, 0);
break;
case 25: /* Hide cursor. */
teken_funcs_param(t, TP_SHOWCURSOR, 0);
break;
case 40: /* Disallow 132 columns. */
teken_printf("DECRST allow 132\n");
break;
case 45: /* Disable reverse wraparound. */
teken_printf("DECRST reverse wraparound\n");
break;
case 47: /* Switch to alternate buffer. */
teken_printf("Switch to alternate buffer\n");
break;
case 1000: /* Mouse input. */
teken_funcs_param(t, TP_MOUSE, 0);
break;
default:
teken_printf("Unknown DECRST: %u\n", cmd);
}
}
static void
teken_subr_reset_mode(teken_t *t, unsigned int cmd)
{
switch (cmd) {
case 4:
t->t_stateflags &= ~TS_INSERT;
break;
default:
teken_printf("Unknown reset mode: %u\n", cmd);
}
}
static void
teken_subr_do_resize(teken_t *t)
{
t->t_scrollreg.ts_begin = 0;
t->t_scrollreg.ts_end = t->t_winsize.tp_row;
t->t_originreg = t->t_scrollreg;
}
static void
teken_subr_do_reset(teken_t *t)
{
t->t_curattr = t->t_defattr;
t->t_cursor.tp_row = t->t_cursor.tp_col = 0;
t->t_scrollreg.ts_begin = 0;
t->t_scrollreg.ts_end = t->t_winsize.tp_row;
t->t_originreg = t->t_scrollreg;
t->t_stateflags &= TS_8BIT|TS_CONS25;
t->t_stateflags |= TS_AUTOWRAP;
t->t_scs[0] = teken_scs_us_ascii;
t->t_scs[1] = teken_scs_us_ascii;
t->t_curscs = 0;
teken_subr_save_cursor(t);
teken_tab_default(t);
}
static void
teken_subr_reset_to_initial_state(teken_t *t)
{
teken_subr_do_reset(t);
teken_subr_erase_display(t, 2);
teken_funcs_param(t, TP_SHOWCURSOR, 1);
teken_funcs_cursor(t);
}