tmux/input.c

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2007-09-28 22:47:22 +00:00
/* $Id: input.c,v 1.6 2007-09-28 22:47:21 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 <string.h>
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#include <stdlib.h>
#include "tmux.h"
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struct {
u_char first;
u_char last;
enum input_class class;
} input_table[] = {
{ 0x00, 0x1f, INPUT_C0CONTROL },
{ 0x20, 0x20, INPUT_SPACE },
{ 0x21, 0x2F, INPUT_INTERMEDIATE }, /* also INPUT_SPACE */
{ 0x30, 0x3F, INPUT_PARAMETER },
{ 0x40, 0x5F, INPUT_UPPERCASE },
{ 0x60, 0x7E, INPUT_LOWERCASE },
{ 0x7F, 0x7F, INPUT_DELETE },
{ 0x80, 0x9F, INPUT_C1CONTROL },
{ 0xA0, 0xA0, INPUT_SPACE },
{ 0xA1, 0xFE, INPUT_G1DISPLAYABLE },
{ 0xFF, 0xFF, INPUT_SPECIAL },
};
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#define NINPUTCLASS (sizeof input_table / sizeof input_table[0])
enum input_class input_lookup_class(u_char);
int input_get_argument(struct input_ctx *, u_int, uint16_t *, uint16_t);
void *input_state_first(u_char, enum input_class, struct input_ctx *);
void *input_state_escape(u_char, enum input_class, struct input_ctx *);
void *input_state_intermediate(u_char, enum input_class, struct input_ctx *);
void *input_state_sequence_first(
u_char, enum input_class, struct input_ctx *);
void *input_state_sequence_next(
u_char, enum input_class, struct input_ctx *);
void *input_state_sequence_intermediate(
u_char, enum input_class, 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 *);
enum input_class
input_lookup_class(u_char ch)
{
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enum input_class iclass;
u_int i;
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iclass = INPUT_SPACE;
for (i = 0; i < NINPUTCLASS; i++) {
if (ch >= input_table[i].first && ch <= input_table[i].last) {
iclass = input_table[i].class;
break;
}
}
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if (i == NINPUTCLASS)
fatalx("character without class");
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return (iclass);
}
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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;
char tmp[64];
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->len == 0)
return (0);
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if (arg->len > sizeof tmp - 1)
return (-1);
memcpy(tmp, ictx->buf + arg->off, arg->len);
tmp[arg->len] = '\0';
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*n = strtonum(tmp, 0, UINT16_MAX, &errstr);
if (errstr != NULL)
return (-1);
return (0);
}
void
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input_init(struct input_ctx *ictx, struct screen *s)
{
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ictx->s = s;
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ictx->intoff = 0;
ictx->intlen = 0;
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ARRAY_INIT(&ictx->args);
ictx->state = input_state_first;
}
void
input_free(struct input_ctx *ictx)
{
ARRAY_FREE(&ictx->args);
}
size_t
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input_parse(struct input_ctx *ictx, u_char *buf, size_t len, struct buffer *b)
{
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enum input_class iclass;
u_char ch;
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ictx->buf = buf;
ictx->len = len;
ictx->off = 0;
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ictx->b = b;
log_debug2("entry; buffer=%zu", ictx->len);
while (ictx->off < ictx->len) {
ch = ictx->buf[ictx->off++];
iclass = input_lookup_class(ch);
ictx->state = ictx->state(ch, iclass, ictx);
}
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return (ictx->len);
}
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void *
input_state_first(u_char ch, enum input_class iclass, struct input_ctx *ictx)
{
log_debug2("first (%hhu); sx=%u, sy=%u, cx=%u, cy=%u",
ch, ictx->s->sx, ictx->s->sy, ictx->s->cx, ictx->s->cy);
switch (iclass) {
case INPUT_C0CONTROL:
if (ch == 0x1b)
return (input_state_escape);
input_handle_c0_control(ch, ictx);
break;
case INPUT_C1CONTROL:
ch -= 0x40;
if (ch == '[')
return (input_state_sequence_first);
input_handle_c1_control(ch, ictx);
break;
case INPUT_SPACE:
case INPUT_INTERMEDIATE:
case INPUT_PARAMETER:
case INPUT_UPPERCASE:
case INPUT_LOWERCASE:
case INPUT_DELETE:
case INPUT_G1DISPLAYABLE:
case INPUT_SPECIAL:
input_handle_character(ch, ictx);
break;
}
return (input_state_first);
}
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void *
input_state_escape(u_char ch, enum input_class iclass, struct input_ctx *ictx)
{
if (iclass == INPUT_C1CONTROL || iclass == INPUT_G1DISPLAYABLE) {
/* Treat as 7-bit equivalent. */
ch &= 0x7f;
iclass = input_lookup_class(ch);
}
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switch (iclass) {
case INPUT_C0CONTROL:
input_handle_c0_control(ch, ictx);
return (input_state_escape);
case INPUT_SPACE:
case INPUT_INTERMEDIATE:
ictx->intoff = ictx->off;
ictx->intlen = 1;
return (input_state_intermediate);
case INPUT_PARAMETER:
input_handle_private_two(ch, ictx);
break;
case INPUT_UPPERCASE:
if (ch == '[')
return (input_state_sequence_first);
input_handle_c1_control(ch, ictx);
break;
case INPUT_LOWERCASE:
input_handle_standard_two(ch, ictx);
break;
case INPUT_DELETE:
case INPUT_SPECIAL:
case INPUT_C1CONTROL:
case INPUT_G1DISPLAYABLE:
break;
}
return (input_state_first);
}
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void *
input_state_intermediate(
u_char ch, enum input_class iclass, struct input_ctx *ictx)
{
switch (iclass) {
case INPUT_SPACE:
case INPUT_INTERMEDIATE:
ictx->intlen++;
return (input_state_intermediate);
case INPUT_PARAMETER:
input_handle_private_two(ch, ictx);
break;
case INPUT_UPPERCASE:
case INPUT_LOWERCASE:
input_handle_standard_two(ch, ictx);
break;
case INPUT_C0CONTROL:
case INPUT_DELETE:
case INPUT_SPECIAL:
case INPUT_C1CONTROL:
case INPUT_G1DISPLAYABLE:
break;
}
return (input_state_first);
}
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void *
input_state_sequence_first(
u_char ch, enum input_class iclass, struct input_ctx *ictx)
{
ictx->private = '\0';
switch (iclass) {
case INPUT_PARAMETER:
if (ch >= 0x3c && ch <= 0x3f) {
/* Private control sequence. */
ictx->private = ch;
ictx->saved = ictx->off;
return (input_state_sequence_next);
}
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break;
case INPUT_C0CONTROL:
case INPUT_C1CONTROL:
case INPUT_SPACE:
case INPUT_INTERMEDIATE:
case INPUT_UPPERCASE:
case INPUT_LOWERCASE:
case INPUT_DELETE:
case INPUT_G1DISPLAYABLE:
case INPUT_SPECIAL:
break;
}
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/* Pass this character to next state directly. */
ictx->saved = ictx->off - 1;
return (input_state_sequence_next(ch, iclass, ictx));
}
void *
input_state_sequence_next(
u_char ch, enum input_class iclass, struct input_ctx *ictx)
{
struct input_arg *iarg;
switch (iclass) {
case INPUT_SPACE:
case INPUT_INTERMEDIATE:
if (ictx->saved != ictx->off) {
ARRAY_EXPAND(&ictx->args, 1);
iarg = &ARRAY_LAST(&ictx->args);
iarg->off = ictx->saved;
iarg->len = ictx->off - ictx->saved - 1;
}
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ictx->intoff = ictx->off;
ictx->intlen = 1;
return (input_state_sequence_intermediate);
case INPUT_PARAMETER:
if (ch == ';') {
ARRAY_EXPAND(&ictx->args, 1);
iarg = &ARRAY_LAST(&ictx->args);
iarg->off = ictx->saved;
iarg->len = ictx->off - ictx->saved - 1;
ictx->saved = ictx->off;
return (input_state_sequence_next);
}
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return (input_state_sequence_next);
case INPUT_UPPERCASE:
case INPUT_LOWERCASE:
if (ictx->saved != ictx->off) {
ARRAY_EXPAND(&ictx->args, 1);
iarg = &ARRAY_LAST(&ictx->args);
iarg->off = ictx->saved;
iarg->len = ictx->off - ictx->saved - 1;
}
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input_handle_sequence(ch, ictx);
break;
case INPUT_C0CONTROL:
case INPUT_C1CONTROL:
case INPUT_DELETE:
case INPUT_SPECIAL:
case INPUT_G1DISPLAYABLE:
break;
}
return (input_state_first);
}
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void *
input_state_sequence_intermediate(
u_char ch, enum input_class iclass, struct input_ctx *ictx)
{
switch (iclass) {
case INPUT_SPACE:
case INPUT_INTERMEDIATE:
ictx->intlen++;
return (input_state_sequence_intermediate);
case INPUT_UPPERCASE:
case INPUT_LOWERCASE:
input_handle_sequence(ch, ictx);
break;
case INPUT_PARAMETER:
case INPUT_C0CONTROL:
case INPUT_DELETE:
case INPUT_SPECIAL:
case INPUT_C1CONTROL:
case INPUT_G1DISPLAYABLE:
break;
}
return (input_state_first);
}
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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_character(ictx->s, ch);
input_store8(ictx->b, ch);
}
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void
input_handle_c0_control(u_char ch, struct input_ctx *ictx)
{
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log_debug2("-- c0 %zu: %hhu", ictx->off, ch);
switch (ch) {
case '\0': /* NUL */
break;
case '\n': /* LF */
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screen_cursor_down_scroll(ictx->s);
break;
case '\r': /* CR */
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ictx->s->cx = 0;
break;
case '\010': /* BS */
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if (ictx->s->cx > 0)
ictx->s->cx--;
break;
default:
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log_debug("unknown c0: %hhu", ch);
return;
}
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input_store8(ictx->b, ch);
}
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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);
/* XXX window title */
switch (ch) {
case 'M': /* RI */
screen_cursor_up_scroll(ictx->s);
input_store_zero(ictx->b, CODE_REVERSEINDEX);
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)
{
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log_debug2("-- p2 %zu: %hhu (%c) (%zu, %zu)",
ictx->off, ch, ch, ictx->intoff, ictx->intlen);
switch (ch) {
case '=': /* DECKPAM */
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input_store_zero(ictx->b, CODE_KKEYPADON);
break;
case '>': /* DECKPNM*/
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input_store_zero(ictx->b, CODE_KKEYPADOFF);
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) (%zu,%zu)",
ictx->off, ch, ch, ictx->intoff, ictx->intlen);
log_debug("unknown s2: %hhu", ch);
}
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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[] = {
{ 'A', input_handle_sequence_cuu },
{ 'B', input_handle_sequence_cud },
{ 'C', input_handle_sequence_cuf },
{ 'D', input_handle_sequence_cub },
{ 'P', input_handle_sequence_dch },
{ 'M', input_handle_sequence_dl },
{ '@', input_handle_sequence_ich },
{ 'L', input_handle_sequence_il },
{ 'd', input_handle_sequence_vpa },
{ 'G', input_handle_sequence_hpa },
{ 'H', input_handle_sequence_cup },
{ 'f', input_handle_sequence_cup },
{ 'J', input_handle_sequence_ed },
{ 'K', input_handle_sequence_el },
{ 'h', input_handle_sequence_sm },
{ 'l', input_handle_sequence_rm },
{ 'r', input_handle_sequence_decstbm },
{ 'm', input_handle_sequence_sgr },
};
u_int i;
struct input_arg *iarg;
log_debug2("-- sq %zu: %hhu (%c) (%zu,%zu): %u",
ictx->off, ch, ch, ictx->intoff, ictx->intlen,
ARRAY_LENGTH(&ictx->args));
for (i = 0; i < ARRAY_LENGTH(&ictx->args); i++) {
iarg = &ARRAY_ITEM(&ictx->args, i);
if (iarg->len > 0) {
log_debug(" ++ %u: (%zu) %.*s", i,
iarg->len, (int) iarg->len, ictx->buf + iarg->off);
}
}
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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);
ARRAY_CLEAR(&ictx->args);
return;
}
}
ARRAY_CLEAR(&ictx->args);
log_debug("unknown sq: %c (%hhu %hhu)", ch, ch, ictx->private);
}
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void
input_handle_sequence_cuu(struct input_ctx *ictx)
{
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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;
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if (n == 0 || n > ictx->s->cy) {
log_debug3("cuu: out of range: %hu", n);
return;
}
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ictx->s->cy -= n;
input_store_one(ictx->b, CODE_CURSORUP, n);
}
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void
input_handle_sequence_cud(struct input_ctx *ictx)
{
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 > ictx->s->sy - ictx->s->cy - 1) {
log_debug3("cud: out of range: %hu", n);
return;
}
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ictx->s->cy += n;
input_store_one(ictx->b, CODE_CURSORDOWN, n);
}
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void
input_handle_sequence_cuf(struct input_ctx *ictx)
{
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 > ictx->s->sx - ictx->s->cx - 1) {
log_debug3("cuf: out of range: %hu", n);
return;
}
ictx->s->cx += n;
input_store_one(ictx->b, CODE_CURSORRIGHT, n);
}
void
input_handle_sequence_cub(struct input_ctx *ictx)
{
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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;
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if (n == 0 || n > ictx->s->cx) {
log_debug3("cub: out of range: %hu", n);
return;
}
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ictx->s->cx -= n;
input_store_one(ictx->b, CODE_CURSORLEFT, n);
}
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void
input_handle_sequence_dch(struct input_ctx *ictx)
{
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 > ictx->s->sx - ictx->s->cx - 1) {
log_debug3("dch: out of range: %hu", n);
return;
}
screen_delete_characters(ictx->s, ictx->s->cx, ictx->s->cy, n);
input_store_one(ictx->b, CODE_DELETECHARACTER, n);
}
void
input_handle_sequence_dl(struct input_ctx *ictx)
{
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 > ictx->s->sy - ictx->s->cy - 1) {
log_debug3("dl: out of range: %hu", n);
return;
}
screen_delete_lines(ictx->s, ictx->s->cy, n);
input_store_one(ictx->b, CODE_DELETELINE, n);
}
void
input_handle_sequence_ich(struct input_ctx *ictx)
{
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 > ictx->s->sx - ictx->s->cx - 1) {
log_debug3("ich: out of range: %hu", n);
return;
}
screen_insert_characters(ictx->s, ictx->s->cx, ictx->s->cy, n);
input_store_one(ictx->b, CODE_INSERTCHARACTER, n);
}
void
input_handle_sequence_il(struct input_ctx *ictx)
{
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 > ictx->s->sy - ictx->s->cy - 1) {
log_debug3("il: out of range: %hu", n);
return;
}
screen_insert_lines(ictx->s, ictx->s->cy, n);
input_store_one(ictx->b, CODE_INSERTLINE, n);
}
void
input_handle_sequence_vpa(struct input_ctx *ictx)
{
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 > ictx->s->sy) {
log_debug3("vpa: out of range: %hu", n);
return;
}
ictx->s->cy = n - 1;
input_store_two(ictx->b, CODE_CURSORMOVE, n, ictx->s->cx + 1);
}
void
input_handle_sequence_hpa(struct input_ctx *ictx)
{
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 > ictx->s->sx) {
log_debug3("hpa: out of range: %hu", n);
return;
}
ictx->s->cx = n - 1;
input_store_two(ictx->b, CODE_CURSORMOVE, ictx->s->cy + 1, n);
}
void
input_handle_sequence_cup(struct input_ctx *ictx)
{
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;
if (n == 0 || n > ictx->s->sy || m == 0 || m > ictx->s->sx) {
log_debug3("cup: out of range: %hu", n);
return;
}
ictx->s->cx = m - 1;
ictx->s->cy = n - 1;
input_store_two(ictx->b, CODE_CURSORMOVE, n, m);
}
void
input_handle_sequence_ed(struct input_ctx *ictx)
{
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_fill_end_of_screen(ictx->s, ictx->s->cx, ictx->s->cy,
SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
input_store_zero(ictx->b, CODE_CLEARENDOFSCREEN);
break;
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case 2:
screen_fill_screen(
ictx->s, SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
input_store_zero(ictx->b, CODE_CLEARSCREEN);
break;
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}
}
void
input_handle_sequence_el(struct input_ctx *ictx)
{
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_fill_end_of_line(ictx->s, ictx->s->cx, ictx->s->cy,
SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
input_store_zero(ictx->b, CODE_CLEARENDOFLINE);
break;
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case 1:
screen_fill_start_of_line(ictx->s, ictx->s->cx, ictx->s->cy,
SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
input_store_zero(ictx->b, CODE_CLEARSTARTOFLINE);
break;
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case 2:
screen_fill_line(ictx->s, ictx->s->cy,
SCREEN_DEFDATA, ictx->s->attr, ictx->s->colr);
input_store_zero(ictx->b, CODE_CLEARLINE);
break;
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}
}
void
input_handle_sequence_sm(struct input_ctx *ictx)
{
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 */
ictx->s->mode |= MODE_KCURSOR;
input_store_zero(ictx->b, CODE_KCURSORON);
break;
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case 25: /* TCEM */
ictx->s->mode |= MODE_CURSOR;
input_store_zero(ictx->b, CODE_CURSORON);
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 */
ictx->s->mode |= MODE_INSERT;
input_store_zero(ictx->b, CODE_INSERTON);
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;
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 */
ictx->s->mode &= ~MODE_KCURSOR;
input_store_zero(ictx->b, CODE_KCURSOROFF);
break;
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case 25: /* TCEM */
ictx->s->mode &= ~MODE_CURSOR;
input_store_zero(ictx->b, CODE_CURSOROFF);
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 */
ictx->s->mode &= ~MODE_INSERT;
input_store_zero(ictx->b, CODE_INSERTOFF);
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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}
}
void
input_handle_sequence_decstbm(struct input_ctx *ictx)
{
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;
if (n == 0 || n > ictx->s->sy - 1 || m == 0 || m > ictx->s->sx - 1) {
log_debug3("decstbm: out of range: %hu,%hu", m, n);
return;
}
if (m > n) {
log_debug3("decstbm: out of range: %hu,%hu", m, n);
return;
}
ictx->s->ry_upper = n - 1;
ictx->s->ry_lower = m - 1;
input_store_two(ictx->b, CODE_SCROLLREGION, n, m);
}
void
input_handle_sequence_sgr(struct input_ctx *ictx)
{
u_int i, n;
uint16_t m;
n = ARRAY_LENGTH(&ictx->args);
input_store_zero(ictx->b, CODE_ATTRIBUTES);
if (n == 0) {
ictx->s->attr = 0;
ictx->s->colr = SCREEN_DEFCOLR;
input_store16(ictx->b, 1);
input_store16(ictx->b, 0);
} else {
input_store16(ictx->b, n);
for (i = 0; i < n; i++) {
if (input_get_argument(ictx, i, &m, 0) != 0) {
/* XXX XXX partial write to client */
return;
}
switch (m) {
case 0:
case 10:
ictx->s->attr = 0;
ictx->s->colr = SCREEN_DEFCOLR;
break;
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case 1:
ictx->s->attr |= ATTR_BRIGHT;
break;
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case 2:
ictx->s->attr |= ATTR_DIM;
break;
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case 3:
ictx->s->attr |= ATTR_ITALICS;
break;
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case 4:
ictx->s->attr |= ATTR_UNDERSCORE;
break;
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case 5:
ictx->s->attr |= ATTR_BLINK;
break;
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case 7:
ictx->s->attr |= ATTR_REVERSE;
break;
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case 8:
ictx->s->attr |= ATTR_HIDDEN;
break;
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case 23:
ictx->s->attr &= ~ATTR_ITALICS;
break;
case 24:
ictx->s->attr &= ~ATTR_UNDERSCORE;
break;
case 30:
case 31:
case 32:
case 33:
case 34:
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case 35:
case 36:
case 37:
ictx->s->colr &= 0x0f;
ictx->s->colr |= (m - 30) << 4;
break;
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case 39:
ictx->s->colr &= 0x0f;
ictx->s->colr |= 0x80;
break;
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
ictx->s->colr &= 0xf0;
ictx->s->colr |= m - 40;
break;
case 49:
ictx->s->colr &= 0xf0;
ictx->s->colr |= 0x08;
break;
}
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input_store16(ictx->b, m);
}
}
}
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_write(b, &n, sizeof n);
}
void
input_store16(struct buffer *b, uint16_t n)
{
buffer_write(b, &n, sizeof n);
}
uint8_t
input_extract8(struct buffer *b)
{
uint8_t n;
buffer_read(b, &n, sizeof n);
return (n);
}
uint16_t
input_extract16(struct buffer *b)
{
uint16_t n;
buffer_read(b, &n, sizeof n);
return (n);
}