tmux/input.c

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2007-12-06 13:54:33 +00:00
/* $Id: input.c,v 1.45 2007-12-06 13:54:33 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>
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#include <stdlib.h>
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#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)
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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);
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void input_start_string(struct input_ctx *, int);
void input_abort_string(struct input_ctx *);
int input_add_string(struct input_ctx *, u_char);
char *input_get_string(struct input_ctx *);
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void input_state(struct input_ctx *, void *);
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_state_string_next(u_char, struct input_ctx *);
void input_state_string_escape(u_char, struct input_ctx *);
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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 *);
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void input_handle_sequence_dsr(struct input_ctx *);
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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);
}
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int
input_get_argument(struct input_ctx *ictx, u_int i, uint16_t *n, uint16_t d)
{
struct input_arg *arg;
const char *errstr;
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*n = d;
if (i >= ARRAY_LENGTH(&ictx->args))
return (0);
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arg = &ARRAY_ITEM(&ictx->args, i);
if (*arg->data == '\0')
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return (0);
*n = strtonum(arg->data, 0, UINT16_MAX, &errstr);
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if (errstr != NULL)
return (-1);
return (0);
}
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void
input_start_string(struct input_ctx *ictx, int type)
{
ictx->string_type = type;
ictx->string_len = 0;
}
void
input_abort_string(struct input_ctx *ictx)
{
xfree(ictx->string_buf);
ictx->string_buf = NULL;
}
int
input_add_string(struct input_ctx *ictx, u_char ch)
{
ictx->string_buf = xrealloc(ictx->string_buf, 1, ictx->string_len + 1);
ictx->string_buf[ictx->string_len++] = ch;
if (ictx->string_len >= MAXSTRINGLEN) {
input_abort_string(ictx);
return (1);
}
return (0);
}
char *
input_get_string(struct input_ctx *ictx)
{
char *s;
if (ictx->string_buf == NULL)
return (xstrdup(""));
input_add_string(ictx, '\0');
s = ictx->string_buf;
ictx->string_buf = NULL;
return (s);
}
void
input_state(struct input_ctx *ictx, void *state)
{
ictx->state = state;
}
void
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input_init(struct window *w)
{
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ARRAY_INIT(&w->ictx.args);
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w->ictx.string_len = 0;
w->ictx.string_buf = NULL;
input_state(&w->ictx, input_state_first);
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}
void
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input_free(struct window *w)
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{
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if (w->ictx.string_buf != NULL)
xfree(w->ictx.string_buf);
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ARRAY_FREE(&w->ictx.args);
}
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void
input_parse(struct window *w)
{
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struct input_ctx *ictx = &w->ictx;
u_char ch;
if (BUFFER_USED(w->in) == 0)
return;
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ictx->buf = BUFFER_OUT(w->in);
ictx->len = BUFFER_USED(w->in);
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ictx->off = 0;
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ictx->w = w;
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log_debug2("entry; buffer=%zu", ictx->len);
if (w->mode == NULL)
screen_write_start(&ictx->ctx, &w->base, tty_write_window, w);
else
screen_write_start(&ictx->ctx, &w->base, NULL, NULL);
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while (ictx->off < ictx->len) {
ch = ictx->buf[ictx->off++];
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ictx->state(ch, ictx);
}
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screen_write_stop(&ictx->ctx);
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buffer_remove(w->in, ictx->len);
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}
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void
input_state_first(u_char ch, struct input_ctx *ictx)
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{
if (INPUT_C0CONTROL(ch)) {
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if (ch == 0x1b)
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input_state(ictx, input_state_escape);
else
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input_handle_c0_control(ch, ictx);
return;
}
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if (INPUT_C1CONTROL(ch)) {
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ch -= 0x40;
if (ch == '[')
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input_state(ictx, input_state_sequence_first);
else if (ch == ']')
input_state(ictx, input_state_title_first);
else
input_handle_c1_control(ch, ictx);
return;
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}
input_handle_character(ch, ictx);
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}
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void
input_state_escape(u_char ch, struct input_ctx *ictx)
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{
/* Treat C1 control and G1 displayable as 7-bit equivalent. */
if (INPUT_C1CONTROL(ch) || INPUT_G1DISPLAYABLE(ch))
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ch &= 0x7f;
if (INPUT_C0CONTROL(ch)) {
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input_handle_c0_control(ch, ictx);
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return;
}
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if (INPUT_INTERMEDIATE(ch)) {
input_state(ictx, input_state_intermediate);
return;
}
if (INPUT_PARAMETER(ch)) {
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input_state(ictx, input_state_first);
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input_handle_private_two(ch, ictx);
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return;
}
if (INPUT_UPPERCASE(ch)) {
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if (ch == '[')
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input_state(ictx, input_state_sequence_first);
else if (ch == ']')
input_state(ictx, input_state_title_first);
else {
input_state(ictx, input_state_first);
input_handle_c1_control(ch, ictx);
}
return;
}
if (INPUT_LOWERCASE(ch)) {
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input_state(ictx, input_state_first);
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input_handle_standard_two(ch, ictx);
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return;
}
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input_state(ictx, input_state_first);
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}
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void
input_state_title_first(u_char ch, struct input_ctx *ictx)
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{
if (ch >= '0' && ch <= '9') {
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if (ch == '0')
input_start_string(ictx, STRING_TITLE);
else
input_start_string(ictx, STRING_IGNORE);
input_state(ictx, input_state_title_second);
return;
}
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input_state(ictx, input_state_first);
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}
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void
input_state_title_second(u_char ch, struct input_ctx *ictx)
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{
if (ch == ';') {
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input_state(ictx, input_state_title_next);
return;
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}
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input_state(ictx, input_state_first);
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}
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void
input_state_title_next(u_char ch, struct input_ctx *ictx)
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{
if (ch == '\007') {
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if (ictx->string_type == STRING_TITLE) {
screen_write_set_title(
&ictx->ctx, input_get_string(ictx));
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} else
input_abort_string(ictx);
input_state(ictx, input_state_first);
return;
}
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if (ch >= 0x20 && ch != 0x7f) {
if (input_add_string(ictx, ch) != 0)
input_state(ictx, input_state_first);
return;
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}
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input_state(ictx, input_state_first);
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}
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void
input_state_intermediate(u_char ch, struct input_ctx *ictx)
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{
if (INPUT_INTERMEDIATE(ch))
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return;
if (INPUT_PARAMETER(ch)) {
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input_state(ictx, input_state_first);
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input_handle_private_two(ch, ictx);
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return;
}
if (INPUT_UPPERCASE(ch) || INPUT_LOWERCASE(ch)) {
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input_state(ictx, input_state_first);
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input_handle_standard_two(ch, ictx);
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return;
}
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input_state(ictx, input_state_first);
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}
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void
input_state_sequence_first(u_char ch, struct input_ctx *ictx)
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{
ictx->private = '\0';
ARRAY_CLEAR(&ictx->args);
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input_state(ictx, input_state_sequence_next);
if (INPUT_PARAMETER(ch)) {
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input_new_argument(ictx);
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if (ch >= 0x3c && ch <= 0x3f) {
/* Private control sequence. */
ictx->private = ch;
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return;
}
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}
/* Pass character on directly. */
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input_state_sequence_next(ch, ictx);
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}
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void
input_state_sequence_next(u_char ch, struct input_ctx *ictx)
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{
if (INPUT_INTERMEDIATE(ch)) {
if (input_add_argument(ictx, '\0') != 0)
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input_state(ictx, input_state_first);
else
input_state(ictx, input_state_sequence_intermediate);
return;
}
if (INPUT_PARAMETER(ch)) {
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if (ch == ';') {
if (input_add_argument(ictx, '\0') != 0)
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input_state(ictx, input_state_first);
else
input_new_argument(ictx);
} else if (input_add_argument(ictx, ch) != 0)
input_state(ictx, input_state_first);
return;
}
if (INPUT_UPPERCASE(ch) || INPUT_LOWERCASE(ch)) {
if (input_add_argument(ictx, '\0') != 0)
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input_state(ictx, input_state_first);
else {
input_state(ictx, input_state_first);
input_handle_sequence(ch, ictx);
}
return;
}
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input_state(ictx, input_state_first);
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}
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void
input_state_sequence_intermediate(u_char ch, struct input_ctx *ictx)
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{
if (INPUT_INTERMEDIATE(ch))
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return;
if (INPUT_UPPERCASE(ch) || INPUT_LOWERCASE(ch)) {
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input_state(ictx, input_state_first);
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input_handle_sequence(ch, ictx);
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return;
}
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input_state(ictx, input_state_first);
}
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void
input_state_string_next(u_char ch, struct input_ctx *ictx)
{
if (ch == 0x1b) {
input_state(ictx, input_state_string_escape);
return;
}
if (ch >= 0x20 && ch != 0x7f) {
if (input_add_string(ictx, ch) != 0)
input_state(ictx, input_state_first);
return;
}
}
void
input_state_string_escape(u_char ch, struct input_ctx *ictx)
{
if (ch == '\\') {
input_state(ictx, input_state_first);
switch (ictx->string_type) {
case STRING_NAME:
xfree(ictx->w->name);
ictx->w->name = input_get_string(ictx);
server_status_window(ictx->w);
break;
}
return;
}
input_state(ictx, input_state_string_next);
input_state_string_next(ch, ictx);
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}
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void
input_handle_character(u_char ch, struct input_ctx *ictx)
{
log_debug2("-- ch %zu: %hhu (%c)", ictx->off, ch, ch);
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screen_write_put_character(&ictx->ctx, ch);
}
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void
input_handle_c0_control(u_char ch, struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
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u_char attr;
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log_debug2("-- c0 %zu: %hhu", ictx->off, ch);
switch (ch) {
case '\0': /* NUL */
break;
case '\n': /* LF */
screen_write_cursor_down_scroll(&ictx->ctx);
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break;
case '\r': /* CR */
screen_write_move_cursor(&ictx->ctx, 0, s->cy);
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break;
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case '\007': /* BELL */
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ictx->w->flags |= WINDOW_BELL;
break;
case '\010': /* BS */
screen_write_cursor_left(&ictx->ctx, 1);
break;
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case '\011': /* TAB */
s->cx = ((s->cx / 8) * 8) + 8;
if (s->cx > screen_last_x(s)) {
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s->cx = 0;
screen_write_cursor_down(&ictx->ctx, 1);
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}
screen_write_move_cursor(&ictx->ctx, s->cx, s->cy);
break;
case '\016': /* SO */
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attr = s->attr | ATTR_CHARSET;
screen_write_set_attributes(&ictx->ctx, attr, s->colr);
break;
case '\017': /* SI */
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attr = s->attr & ~ATTR_CHARSET;
screen_write_set_attributes(&ictx->ctx, attr, s->colr);
break;
default:
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log_debug("unknown c0: %hhu", ch);
break;
}
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}
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void
input_handle_c1_control(u_char ch, struct input_ctx *ictx)
{
log_debug2("-- c1 %zu: %hhu (%c)", ictx->off, ch, ch);
switch (ch) {
case 'M': /* RI */
screen_write_cursor_up_scroll(&ictx->ctx);
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break;
default:
log_debug("unknown c1: %hhu", ch);
break;
}
}
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void
input_handle_private_two(u_char ch, struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
log_debug2("-- p2 %zu: %hhu (%c)", ictx->off, ch, ch);
switch (ch) {
case '=': /* DECKPAM */
screen_write_set_mode(&ictx->ctx, MODE_KKEYPAD);
break;
case '>': /* DECKPNM*/
screen_write_clear_mode(&ictx->ctx, MODE_KKEYPAD);
break;
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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;
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break;
case '8': /* DECRC */
if (!(s->mode & MODE_SAVED))
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break;
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screen_write_set_attributes(
&ictx->ctx, s->saved_attr, s->saved_colr);
screen_write_move_cursor(&ictx->ctx, s->saved_cx, s->saved_cy);
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break;
default:
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log_debug("unknown p2: %hhu", ch);
break;
}
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}
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void
input_handle_standard_two(u_char ch, struct input_ctx *ictx)
{
log_debug2("-- s2 %zu: %hhu (%c)", ictx->off, ch, ch);
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switch (ch) {
case 'k':
input_start_string(ictx, STRING_NAME);
input_state(ictx, input_state_string_next);
break;
default:
log_debug("unknown s2: %hhu", ch);
break;
}
}
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void
input_handle_sequence(u_char ch, struct input_ctx *ictx)
{
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static const struct {
u_char ch;
void (*fn)(struct input_ctx *);
} table[] = {
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{ '@', input_handle_sequence_ich },
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{ '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 },
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{ '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 },
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{ 'h', input_handle_sequence_sm },
{ 'l', input_handle_sequence_rm },
{ 'm', input_handle_sequence_sgr },
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{ 'n', input_handle_sequence_dsr },
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{ 'r', input_handle_sequence_decstbm },
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};
struct screen *s = ictx->ctx.s;
u_int i;
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struct input_arg *iarg;
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log_debug2("-- sq %zu: %hhu (%c): %u [sx=%u, sy=%u, cx=%u, cy=%u, "
"ru=%u, rl=%u]", ictx->off, ch, ch, ARRAY_LENGTH(&ictx->args),
screen_size_x(s), screen_size_y(s), s->cx, s->cy, s->rupper,
s->rlower);
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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);
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}
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/* 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);
}
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void
input_handle_sequence_cuu(struct input_ctx *ictx)
{
uint16_t n;
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if (ictx->private != '\0')
return;
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if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
n = 1;
screen_write_cursor_up(&ictx->ctx, n);
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}
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void
input_handle_sequence_cud(struct input_ctx *ictx)
{
uint16_t n;
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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 = 1;
screen_write_cursor_down(&ictx->ctx, n);
}
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void
input_handle_sequence_cuf(struct input_ctx *ictx)
{
uint16_t n;
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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 = 1;
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screen_write_cursor_right(&ictx->ctx, n);
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}
void
input_handle_sequence_cub(struct input_ctx *ictx)
{
uint16_t n;
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if (ictx->private != '\0')
return;
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if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
if (n == 0)
n = 1;
screen_write_cursor_left(&ictx->ctx, n);
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}
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void
input_handle_sequence_dch(struct input_ctx *ictx)
{
uint16_t n;
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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 = 1;
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screen_write_delete_characters(&ictx->ctx, n);
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}
void
input_handle_sequence_dl(struct input_ctx *ictx)
{
uint16_t n;
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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 = 1;
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screen_write_delete_lines(&ictx->ctx, n);
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}
void
input_handle_sequence_ich(struct input_ctx *ictx)
{
uint16_t n;
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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 = 1;
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screen_write_insert_characters(&ictx->ctx, n);
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}
void
input_handle_sequence_il(struct input_ctx *ictx)
{
uint16_t n;
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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 = 1;
screen_write_insert_lines(&ictx->ctx, n);
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}
void
input_handle_sequence_vpa(struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
uint16_t n;
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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 = 1;
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screen_write_move_cursor(&ictx->ctx, s->cx, n - 1);
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}
void
input_handle_sequence_hpa(struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
uint16_t n;
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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 = 1;
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screen_write_move_cursor(&ictx->ctx, n - 1, s->cy);
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}
void
input_handle_sequence_cup(struct input_ctx *ictx)
{
uint16_t n, m;
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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;
if (n == 0)
n = 1;
if (m == 0)
m = 1;
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screen_write_move_cursor(&ictx->ctx, m - 1, n - 1);
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}
void
input_handle_sequence_ed(struct input_ctx *ictx)
{
uint16_t n;
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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_write_fill_end_of_screen(&ictx->ctx);
break;
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case 2:
screen_write_fill_screen(&ictx->ctx);
break;
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}
}
void
input_handle_sequence_el(struct input_ctx *ictx)
{
uint16_t n;
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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_write_fill_end_of_line(&ictx->ctx);
break;
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case 1:
screen_write_fill_start_of_line(&ictx->ctx);
break;
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case 2:
screen_write_fill_line(&ictx->ctx);
break;
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}
}
void
input_handle_sequence_sm(struct input_ctx *ictx)
{
uint16_t n;
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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 */
screen_write_set_mode(&ictx->ctx, MODE_KCURSOR);
break;
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case 25: /* TCEM */
screen_write_set_mode(&ictx->ctx, MODE_CURSOR);
break;
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case 1000:
screen_write_set_mode(&ictx->ctx, MODE_MOUSE);
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break;
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default:
log_debug("unknown SM [%hhu]: %u", ictx->private, n);
break;
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}
} else {
switch (n) {
case 4: /* IRM */
screen_write_set_mode(&ictx->ctx, MODE_INSERT);
break;
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case 34:
/* Cursor high visibility not supported. */
break;
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default:
log_debug("unknown SM [%hhu]: %u", ictx->private, n);
break;
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}
}
}
void
input_handle_sequence_rm(struct input_ctx *ictx)
{
uint16_t n;
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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 */
screen_write_clear_mode(&ictx->ctx, MODE_KCURSOR);
break;
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case 25: /* TCEM */
screen_write_clear_mode(&ictx->ctx, MODE_CURSOR);
break;
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case 1000:
screen_write_clear_mode(&ictx->ctx, MODE_MOUSE);
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break;
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default:
log_debug("unknown RM [%hhu]: %u", ictx->private, n);
break;
}
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} else if (ictx->private == '\0') {
switch (n) {
case 4: /* IRM */
screen_write_clear_mode(&ictx->ctx, MODE_INSERT);
break;
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case 34:
/* Cursor high visibility not supported. */
break;
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default:
log_debug("unknown RM [%hhu]: %u", ictx->private, n);
break;
}
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}
}
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void
input_handle_sequence_dsr(struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
uint16_t n;
char reply[32];
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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);
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log_debug("cursor request, reply: %s", reply);
buffer_write(ictx->w->out, reply, strlen(reply));
break;
}
}
}
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void
input_handle_sequence_decstbm(struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
uint16_t n, m;
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if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 2)
return;
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if (input_get_argument(ictx, 0, &n, 0) != 0)
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return;
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if (input_get_argument(ictx, 1, &m, 0) != 0)
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return;
if (n == 0)
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n = 1;
if (m == 0)
m = screen_size_y(s);
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screen_write_set_region(&ictx->ctx, n - 1, m - 1);
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}
void
input_handle_sequence_sgr(struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
u_int i, n;
uint16_t m;
u_char attr, colr;
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n = ARRAY_LENGTH(&ictx->args);
if (n == 0) {
attr = 0;
colr = SCREEN_DEFCOLR;
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} else {
attr = s->attr;
colr = s->colr;
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for (i = 0; i < n; i++) {
if (input_get_argument(ictx, i, &m, 0) != 0)
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return;
switch (m) {
case 0:
case 10:
attr &= ATTR_CHARSET;
colr = SCREEN_DEFCOLR;
break;
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case 1:
attr |= ATTR_BRIGHT;
break;
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case 2:
attr |= ATTR_DIM;
break;
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case 3:
attr |= ATTR_ITALICS;
break;
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case 4:
attr |= ATTR_UNDERSCORE;
break;
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case 5:
attr |= ATTR_BLINK;
break;
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case 7:
attr |= ATTR_REVERSE;
break;
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case 8:
attr |= ATTR_HIDDEN;
break;
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case 23:
attr &= ~ATTR_ITALICS;
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break;
case 24:
attr &= ~ATTR_UNDERSCORE;
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break;
case 30:
case 31:
case 32:
case 33:
case 34:
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case 35:
case 36:
case 37:
colr &= 0x0f;
colr |= (m - 30) << 4;
break;
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case 39:
colr &= 0x0f;
colr |= 0x80;
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break;
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
colr &= 0xf0;
colr |= m - 40;
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break;
case 49:
colr &= 0xf0;
colr |= 0x08;
break;
}
}
}
screen_write_set_attributes(&ictx->ctx, attr, colr);
}