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tmux/input.c
Nicholas Marriott 2cdc75fa4e Fix clear.
2007-11-21 14:50:41 +00:00

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/* $Id: input.c,v 1.35 2007-11-21 14:50:41 nicm Exp $ */
/*
* 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 <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
#define INPUT_C0CONTROL(ch) (ch <= 0x1f)
#define INPUT_INTERMEDIATE(ch) (ch == 0xa0 || (ch >= 0x20 && ch <= 0x2f))
#define INPUT_PARAMETER(ch) (ch >= 0x30 && ch <= 0x3f)
#define INPUT_UPPERCASE(ch) (ch >= 0x40 && ch <= 0x5f)
#define INPUT_LOWERCASE(ch) (ch >= 0x60 && ch <= 0x7e)
#define INPUT_DELETE(ch) (ch == 0x7f)
#define INPUT_C1CONTROL(ch) (ch >= 0x80 && ch <= 0x9f)
#define INPUT_G1DISPLAYABLE(ch) (ch >= 0xa1 && ch <= 0xfe)
#define INPUT_SPECIAL(ch) (ch == 0xff)
int input_get_argument(struct input_ctx *, u_int, uint16_t *, uint16_t);
int input_new_argument(struct input_ctx *);
int input_add_argument(struct input_ctx *, u_char ch);
void *input_state_first(u_char, struct input_ctx *);
void *input_state_escape(u_char, struct input_ctx *);
void *input_state_intermediate(u_char, struct input_ctx *);
void *input_state_title_first(u_char, struct input_ctx *);
void *input_state_title_second(u_char, struct input_ctx *);
void *input_state_title_next(u_char, struct input_ctx *);
void *input_state_sequence_first(u_char, struct input_ctx *);
void *input_state_sequence_next(u_char, struct input_ctx *);
void *input_state_sequence_intermediate(u_char, struct input_ctx *);
void input_handle_character(u_char, struct input_ctx *);
void input_handle_c0_control(u_char, struct input_ctx *);
void input_handle_c1_control(u_char, struct input_ctx *);
void input_handle_private_two(u_char, struct input_ctx *);
void input_handle_standard_two(u_char, struct input_ctx *);
void input_handle_sequence(u_char, struct input_ctx *);
void input_handle_sequence_cuu(struct input_ctx *);
void input_handle_sequence_cud(struct input_ctx *);
void input_handle_sequence_cuf(struct input_ctx *);
void input_handle_sequence_cub(struct input_ctx *);
void input_handle_sequence_dch(struct input_ctx *);
void input_handle_sequence_dl(struct input_ctx *);
void input_handle_sequence_ich(struct input_ctx *);
void input_handle_sequence_il(struct input_ctx *);
void input_handle_sequence_vpa(struct input_ctx *);
void input_handle_sequence_hpa(struct input_ctx *);
void input_handle_sequence_cup(struct input_ctx *);
void input_handle_sequence_cup(struct input_ctx *);
void input_handle_sequence_ed(struct input_ctx *);
void input_handle_sequence_el(struct input_ctx *);
void input_handle_sequence_sm(struct input_ctx *);
void input_handle_sequence_rm(struct input_ctx *);
void input_handle_sequence_decstbm(struct input_ctx *);
void input_handle_sequence_sgr(struct input_ctx *);
void input_handle_sequence_dsr(struct input_ctx *);
#define input_limit(v, lower, upper) do { \
if (v < lower) \
v = lower; \
if (v > upper) \
v = upper; \
} while (0)
int
input_new_argument(struct input_ctx *ictx)
{
struct input_arg *arg;
ARRAY_EXPAND(&ictx->args, 1);
arg = &ARRAY_LAST(&ictx->args);
arg->used = 0;
return (0);
}
int
input_add_argument(struct input_ctx *ictx, u_char ch)
{
struct input_arg *arg;
if (ARRAY_LENGTH(&ictx->args) == 0)
return (0);
arg = &ARRAY_LAST(&ictx->args);
if (arg->used > (sizeof arg->data) - 1)
return (-1);
arg->data[arg->used++] = ch;
return (0);
}
int
input_get_argument(struct input_ctx *ictx, u_int i, uint16_t *n, uint16_t d)
{
struct input_arg *arg;
const char *errstr;
*n = d;
if (i >= ARRAY_LENGTH(&ictx->args))
return (0);
arg = &ARRAY_ITEM(&ictx->args, i);
if (*arg->data == '\0')
return (0);
*n = strtonum(arg->data, 0, UINT16_MAX, &errstr);
if (errstr != NULL)
return (-1);
return (0);
}
void
input_init(struct window *w)
{
ARRAY_INIT(&w->ictx.args);
w->ictx.state = input_state_first;
}
void
input_free(struct window *w)
{
ARRAY_FREE(&w->ictx.args);
}
void
input_parse(struct window *w, struct buffer *b)
{
struct input_ctx *ictx = &w->ictx;
u_char ch;
if (BUFFER_USED(w->in) == 0)
return;
ictx->buf = BUFFER_OUT(w->in);
ictx->len = BUFFER_USED(w->in);
ictx->off = 0;
ictx->w = w;
ictx->b = b;
log_debug2("entry; buffer=%zu", ictx->len);
while (ictx->off < ictx->len) {
ch = ictx->buf[ictx->off++];
ictx->state = ictx->state(ch, ictx);
}
buffer_remove(w->in, ictx->len);
}
void *
input_state_first(u_char ch, struct input_ctx *ictx)
{
if (INPUT_C0CONTROL(ch)) {
if (ch == 0x1b)
return (input_state_escape);
input_handle_c0_control(ch, ictx);
return (input_state_first);
}
if (INPUT_C1CONTROL(ch)) {
ch -= 0x40;
if (ch == '[')
return (input_state_sequence_first);
if (ch == ']')
return (input_state_title_first);
input_handle_c1_control(ch, ictx);
return (input_state_first);
}
input_handle_character(ch, ictx);
return (input_state_first);
}
void *
input_state_escape(u_char ch, struct input_ctx *ictx)
{
/* Treat C1 control and G1 displayable as 7-bit equivalent. */
if (INPUT_C1CONTROL(ch) || INPUT_G1DISPLAYABLE(ch))
ch &= 0x7f;
if (INPUT_C0CONTROL(ch)) {
input_handle_c0_control(ch, ictx);
return (input_state_escape);
}
if (INPUT_INTERMEDIATE(ch))
return (input_state_intermediate);
if (INPUT_PARAMETER(ch)) {
input_handle_private_two(ch, ictx);
return (input_state_first);
}
if (INPUT_UPPERCASE(ch)) {
if (ch == '[')
return (input_state_sequence_first);
if (ch == ']')
return (input_state_title_first);
input_handle_c1_control(ch, ictx);
return (input_state_first);
}
if (INPUT_LOWERCASE(ch)) {
input_handle_standard_two(ch, ictx);
return (input_state_first);
}
return (input_state_first);
}
void *
input_state_title_first(u_char ch, struct input_ctx *ictx)
{
if (ch >= '0' && ch <= '9') {
ictx->title_type = ch - '0';
return (input_state_title_second);
}
return (input_state_first);
}
void *
input_state_title_second(u_char ch, struct input_ctx *ictx)
{
if (ch == ';') {
ictx->title_len = 0;
return (input_state_title_next);
}
return (input_state_first);
}
void *
input_state_title_next(u_char ch, struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
if (ch == '\007') {
ictx->title_buf[ictx->title_len++] = '\0';
switch (ictx->title_type) {
case 0:
strlcpy(s->title, ictx->title_buf, sizeof s->title);
input_store_one(ictx->b, CODE_TITLE, ictx->title_len);
buffer_write(ictx->b, ictx->title_buf, ictx->title_len);
break;
}
return (input_state_first);
}
if (ch >= 0x20) {
if (ictx->title_len < (sizeof ictx->title_buf) - 1) {
ictx->title_buf[ictx->title_len++] = ch;
return (input_state_title_next);
}
return (input_state_first);
}
return (input_state_first);
}
void *
input_state_intermediate(u_char ch, struct input_ctx *ictx)
{
if (INPUT_INTERMEDIATE(ch))
return (input_state_intermediate);
if (INPUT_PARAMETER(ch)) {
input_handle_private_two(ch, ictx);
return (input_state_first);
}
if (INPUT_UPPERCASE(ch) || INPUT_LOWERCASE(ch)) {
input_handle_standard_two(ch, ictx);
return (input_state_first);
}
return (input_state_first);
}
void *
input_state_sequence_first(u_char ch, struct input_ctx *ictx)
{
ictx->private = '\0';
ARRAY_CLEAR(&ictx->args);
if (INPUT_PARAMETER(ch)) {
input_new_argument(ictx); /* XXX extraneous arg if priv */
if (ch >= 0x3c && ch <= 0x3f) {
/* Private control sequence. */
ictx->private = ch;
return (input_state_sequence_next);
}
}
/* Pass character on directly. */
return (input_state_sequence_next(ch, ictx));
}
void *
input_state_sequence_next(u_char ch, struct input_ctx *ictx)
{
if (INPUT_INTERMEDIATE(ch)) {
if (input_add_argument(ictx, '\0') != 0)
return (input_state_first);
return (input_state_sequence_intermediate);
}
if (INPUT_PARAMETER(ch)) {
if (ch == ';') {
if (input_add_argument(ictx, '\0') != 0)
return (input_state_first);
input_new_argument(ictx);
return (input_state_sequence_next);
}
if (input_add_argument(ictx, ch) != 0)
return (input_state_first);
return (input_state_sequence_next);
}
if (INPUT_UPPERCASE(ch) || INPUT_LOWERCASE(ch)) {
if (input_add_argument(ictx, '\0') != 0)
return (input_state_first);
input_handle_sequence(ch, ictx);
return (input_state_first);
}
return (input_state_first);
}
void *
input_state_sequence_intermediate(u_char ch, struct input_ctx *ictx)
{
if (INPUT_INTERMEDIATE(ch))
return (input_state_sequence_intermediate);
if (INPUT_UPPERCASE(ch) || INPUT_LOWERCASE(ch)) {
input_handle_sequence(ch, ictx);
return (input_state_first);
}
return (input_state_first);
}
void
input_handle_character(u_char ch, struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
log_debug2("-- ch %zu: %hhu (%c)", ictx->off, ch, ch);
if (s->cx == screen_size_x(s)) {
if (!screen_hidden(s)) {
input_store8(ictx->b, '\r');
input_store8(ictx->b, '\n');
}
s->cx = 0;
screen_display_cursor_down(s);
} else if (!screen_in_x(s, s->cx) || !screen_in_y(s, s->cy))
return;
screen_display_cursor_set(s, ch);
if (!screen_hidden(s))
input_store8(ictx->b, ch);
s->cx++;
}
void
input_handle_c0_control(u_char ch, struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
log_debug2("-- c0 %zu: %hhu", ictx->off, ch);
switch (ch) {
case '\0': /* NUL */
break;
case '\n': /* LF */
screen_display_cursor_down(s);
break;
case '\r': /* CR */
s->cx = 0;
break;
case '\007': /* BELL */
ictx->w->flags |= WINDOW_BELL;
return;
case '\010': /* BS */
if (s->cx > 0)
s->cx--;
break;
case '\011': /* TAB */
s->cx = ((s->cx / 8) * 8) + 8;
if (s->cx > screen_last_x(s)) {
s->cx = 0;
screen_display_cursor_down(s);
}
if (!screen_hidden(s)) {
input_store_two(
ictx->b, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
}
return;
default:
log_debug("unknown c0: %hhu", ch);
return;
}
if (!screen_hidden(s))
input_store8(ictx->b, ch);
}
void
input_handle_c1_control(u_char ch, struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
log_debug2("-- c1 %zu: %hhu (%c)", ictx->off, ch, ch);
switch (ch) {
case 'M': /* RI */
screen_display_cursor_up(s);
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_REVERSEINDEX);
break;
default:
log_debug("unknown c1: %hhu", ch);
break;
}
}
void
input_handle_private_two(u_char ch, struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
log_debug2("-- p2 %zu: %hhu (%c)", ictx->off, ch, ch);
switch (ch) {
case '=': /* DECKPAM */
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_KKEYPADON);
break;
case '>': /* DECKPNM*/
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_KKEYPADOFF);
break;
case '7': /* DECSC */
s->saved_cx = s->cx;
s->saved_cy = s->cy;
s->saved_attr = s->attr;
s->saved_colr = s->colr;
s->mode |= MODE_SAVED;
break;
case '8': /* DECRC */
if (!(s->mode & MODE_SAVED))
break;
s->cx = s->saved_cx;
s->cy = s->saved_cy;
s->attr = s->saved_attr;
s->colr = s->saved_colr;
if (!screen_hidden(s)) {
input_store_two(
ictx->b, CODE_ATTRIBUTES, s->attr, s->colr);
input_store_two(ictx->b, CODE_SCROLLREGION,
s->rupper + 1, s->rlower + 1);
input_store_two(
ictx->b, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
}
break;
default:
log_debug("unknown p2: %hhu", ch);
break;
}
}
void
input_handle_standard_two(u_char ch, struct input_ctx *ictx)
{
log_debug2("-- s2 %zu: %hhu (%c)", ictx->off, ch, ch);
log_debug("unknown s2: %hhu", ch);
}
void
input_handle_sequence(u_char ch, struct input_ctx *ictx)
{
static const struct {
u_char ch;
void (*fn)(struct input_ctx *);
} table[] = {
{ '@', input_handle_sequence_ich },
{ 'A', input_handle_sequence_cuu },
{ 'B', input_handle_sequence_cud },
{ 'C', input_handle_sequence_cuf },
{ 'D', input_handle_sequence_cub },
{ 'G', input_handle_sequence_hpa },
{ 'H', input_handle_sequence_cup },
{ 'J', input_handle_sequence_ed },
{ 'K', input_handle_sequence_el },
{ 'L', input_handle_sequence_il },
{ 'M', input_handle_sequence_dl },
{ 'P', input_handle_sequence_dch },
{ 'd', input_handle_sequence_vpa },
{ 'f', input_handle_sequence_cup },
{ 'h', input_handle_sequence_sm },
{ 'l', input_handle_sequence_rm },
{ 'm', input_handle_sequence_sgr },
{ 'n', input_handle_sequence_dsr },
{ 'r', input_handle_sequence_decstbm },
};
struct screen *s = &ictx->w->screen;
u_int i;
struct input_arg *iarg;
log_debug2("-- sq %zu: %hhu (%c): %u [sx=%u, sy=%u, cx=%u, cy=%u]",
ictx->off, ch, ch, ARRAY_LENGTH(&ictx->args),
screen_size_x(s), screen_size_y(s), s->cx, s->cy);
for (i = 0; i < ARRAY_LENGTH(&ictx->args); i++) {
iarg = &ARRAY_ITEM(&ictx->args, i);
if (*iarg->data != '\0')
log_debug2(" ++ %u: %s", i, iarg->data);
}
/* XXX bsearch? */
for (i = 0; i < (sizeof table / sizeof table[0]); i++) {
if (table[i].ch == ch) {
table[i].fn(ictx);
return;
}
}
log_debug("unknown sq: %c (%hhu %hhu)", ch, ch, ictx->private);
}
void
input_handle_sequence_cuu(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0 || n > s->cy) {
log_debug3("cuu: out of range: %hu", n);
return;
}
s->cy -= n;
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_CURSORUP, n);
}
void
input_handle_sequence_cud(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_last_y(s) - s->cy);
s->cy += n;
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_CURSORDOWN, n);
}
void
input_handle_sequence_cuf(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_last_x(s) - s->cx);
s->cx += n;
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_CURSORRIGHT, n);
}
void
input_handle_sequence_cub(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0 || n > s->cx) {
log_debug3("cub: out of range: %hu", n);
return;
}
s->cx -= n;
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_CURSORLEFT, n);
}
void
input_handle_sequence_dch(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_last_x(s) - s->cx);
screen_display_delete_characters(s, s->cx, s->cy, n);
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_DELETECHARACTER, n);
}
void
input_handle_sequence_dl(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_last_y(s) - s->cy);
if (s->cy < s->rupper || s->cy > s->rlower)
screen_display_delete_lines(s, s->cy, n);
else
screen_display_delete_lines_region(s, s->cy, n);
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_DELETELINE, n);
}
void
input_handle_sequence_ich(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_last_x(s) - s->cx);
screen_display_insert_characters(s, s->cx, s->cy, n);
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_INSERTCHARACTER, n);
}
void
input_handle_sequence_il(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_last_y(s) - s->cy);
if (s->cy < s->rupper || s->cy > s->rlower)
screen_display_insert_lines(s, s->cy, n);
else
screen_display_insert_lines_region(s, s->cy, n);
if (!screen_hidden(s))
input_store_one(ictx->b, CODE_INSERTLINE, n);
}
void
input_handle_sequence_vpa(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_size_y(s));
s->cy = n - 1;
if (!screen_hidden(s))
input_store_two(ictx->b, CODE_CURSORMOVE, n, s->cx + 1);
}
void
input_handle_sequence_hpa(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
return;
input_limit(n, 1, screen_size_x(s));
s->cx = n - 1;
if (!screen_hidden(s))
input_store_two(ictx->b, CODE_CURSORMOVE, s->cy + 1, n);
}
void
input_handle_sequence_cup(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n, m;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 2)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (input_get_argument(ictx, 1, &m, 1) != 0)
return;
input_limit(n, 1, screen_size_y(s));
input_limit(m, 1, screen_size_x(s));
s->cx = m - 1;
s->cy = n - 1;
if (!screen_hidden(s))
input_store_two(ictx->b, CODE_CURSORMOVE, n, m);
}
void
input_handle_sequence_ed(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
u_int i;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 0) != 0)
return;
if (n > 2)
return;
switch (n) {
case 0:
screen_display_fill_cursor_eos(
s, SCREEN_DEFDATA, s->attr, s->colr);
if (screen_hidden(s))
break;
input_store_zero(ictx->b, CODE_CLEARLINE);
for (i = s->cy + 1; i < screen_size_y(s); i++) {
input_store_two(ictx->b, CODE_CURSORMOVE, i + 1, 1);
input_store_zero(ictx->b, CODE_CLEARLINE);
}
input_store_two(
ictx->b, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
break;
case 2:
screen_display_fill_lines(
s, 0, screen_size_y(s), SCREEN_DEFDATA, s->attr, s->colr);
if (screen_hidden(s))
break;
for (i = 0; i < screen_size_y(s); i++) {
input_store_two(ictx->b, CODE_CURSORMOVE, i + 1, 1);
input_store_zero(ictx->b, CODE_CLEARLINE);
}
input_store_two(
ictx->b, CODE_CURSORMOVE, s->cy + 1, s->cx + 1);
break;
}
}
void
input_handle_sequence_el(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 0) != 0)
return;
if (n > 2)
return;
switch (n) {
case 0:
screen_display_fill_cursor_eol(
s, SCREEN_DEFDATA, s->attr, s->colr);
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_CLEARENDOFLINE);
break;
case 1:
screen_display_fill_cursor_bol(
s, SCREEN_DEFDATA, s->attr, s->colr);
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_CLEARSTARTOFLINE);
break;
case 2:
screen_display_fill_line(
s, s->cy, SCREEN_DEFDATA, s->attr, s->colr);
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_CLEARLINE);
break;
}
}
void
input_handle_sequence_sm(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 0) != 0)
return;
if (ictx->private == '?') {
switch (n) {
case 1: /* GATM */
s->mode |= MODE_KCURSOR;
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_KCURSORON);
break;
case 25: /* TCEM */
s->mode |= MODE_CURSOR;
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_CURSORON);
break;
default:
log_debug("unknown SM [%hhu]: %u", ictx->private, n);
break;
}
} else {
switch (n) {
case 4: /* IRM */
s->mode |= MODE_INSERT;
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_INSERTON);
break;
case 34:
/* Cursor high visibility not supported. */
break;
default:
log_debug("unknown SM [%hhu]: %u", ictx->private, n);
break;
}
}
}
void
input_handle_sequence_rm(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 0) != 0)
return;
if (ictx->private == '?') {
switch (n) {
case 1: /* GATM */
s->mode &= ~MODE_KCURSOR;
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_KCURSOROFF);
break;
case 25: /* TCEM */
s->mode &= ~MODE_CURSOR;
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_CURSOROFF);
break;
default:
log_debug("unknown RM [%hhu]: %u", ictx->private, n);
break;
}
} else if (ictx->private == '\0') {
switch (n) {
case 4: /* IRM */
s->mode &= ~MODE_INSERT;
if (!screen_hidden(s))
input_store_zero(ictx->b, CODE_INSERTOFF);
break;
case 34:
/* Cursor high visibility not supported. */
break;
default:
log_debug("unknown RM [%hhu]: %u", ictx->private, n);
break;
}
}
}
void
input_handle_sequence_dsr(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n;
char reply[32];
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 0) != 0)
return;
if (ictx->private == '\0') {
switch (n) {
case 6: /* cursor position */
xsnprintf(reply, sizeof reply,
"\033[%u;%uR", s->cy + 1, s->cx + 1);
log_debug("cursor request, reply: %s", reply);
buffer_write(ictx->w->out, reply, strlen(reply));
break;
}
}
}
void
input_handle_sequence_decstbm(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
uint16_t n, m;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 2)
return;
if (input_get_argument(ictx, 0, &n, 0) != 0)
return;
if (input_get_argument(ictx, 1, &m, 0) != 0)
return;
/* Special case: both zero restores to entire screen. */
/* XXX this will catch [0;0r and [;r etc too, is this right? */
if (n == 0 && m == 0) {
n = 1;
m = screen_size_y(s);
}
input_limit(n, 1, screen_size_y(s));
input_limit(m, 1, screen_size_y(s));
if (n > m) {
log_debug3("decstbm: out of range: %hu,%hu", n, m);
return;
}
/* Cursor moves to top-left. */
s->cx = 0;
s->cy = n - 1;
s->rupper = n - 1;
s->rlower = m - 1;
if (!screen_hidden(s))
input_store_two(ictx->b, CODE_SCROLLREGION, n, m);
}
void
input_handle_sequence_sgr(struct input_ctx *ictx)
{
struct screen *s = &ictx->w->screen;
u_int i, n;
uint16_t m;
n = ARRAY_LENGTH(&ictx->args);
if (n == 0) {
s->attr = 0;
s->colr = SCREEN_DEFCOLR;
} else {
for (i = 0; i < n; i++) {
if (input_get_argument(ictx, i, &m, 0) != 0)
return;
switch (m) {
case 0:
case 10:
s->attr = 0;
s->colr = SCREEN_DEFCOLR;
break;
case 1:
s->attr |= ATTR_BRIGHT;
break;
case 2:
s->attr |= ATTR_DIM;
break;
case 3:
s->attr |= ATTR_ITALICS;
break;
case 4:
s->attr |= ATTR_UNDERSCORE;
break;
case 5:
s->attr |= ATTR_BLINK;
break;
case 7:
s->attr |= ATTR_REVERSE;
break;
case 8:
s->attr |= ATTR_HIDDEN;
break;
case 23:
s->attr &= ~ATTR_ITALICS;
break;
case 24:
s->attr &= ~ATTR_UNDERSCORE;
break;
case 30:
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
s->colr &= 0x0f;
s->colr |= (m - 30) << 4;
break;
case 39:
s->colr &= 0x0f;
s->colr |= 0x80;
break;
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
s->colr &= 0xf0;
s->colr |= m - 40;
break;
case 49:
s->colr &= 0xf0;
s->colr |= 0x08;
break;
}
}
}
if (!screen_hidden(s))
input_store_two(ictx->b, CODE_ATTRIBUTES, s->attr, s->colr);
}
void
input_store_zero(struct buffer *b, u_char code)
{
input_store8(b, '\e');
input_store8(b, code);
}
void
input_store_one(struct buffer *b, u_char code, uint16_t ua)
{
input_store8(b, '\e');
input_store8(b, code);
input_store16(b, ua);
}
void
input_store_two(struct buffer *b, u_char code, uint16_t ua, uint16_t ub)
{
input_store8(b, '\e');
input_store8(b, code);
input_store16(b, ua);
input_store16(b, ub);
}
void
input_store8(struct buffer *b, uint8_t n)
{
buffer_ensure(b, 1);
BUFFER_IN(b)[0] = n;
buffer_add(b, 1);
}
void
input_store16(struct buffer *b, uint16_t n)
{
buffer_ensure(b, 2);
BUFFER_IN(b)[0] = n & 0xff;
BUFFER_IN(b)[1] = n >> 8;
buffer_add(b, 2);
}
uint8_t
input_extract8(struct buffer *b)
{
uint8_t n;
n = BUFFER_OUT(b)[0];
buffer_remove(b, 1);
return (n);
}
uint16_t
input_extract16(struct buffer *b)
{
uint16_t n;
n = BUFFER_OUT(b)[0] | (BUFFER_OUT(b)[1] << 8);
buffer_remove(b, 2);
return (n);
}
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