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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation.
* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
* All rights reserved.
*/
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include <termios.h>
#include "cmdline_vt100.h"
const char *cmdline_vt100_commands[] = {
vt100_up_arr,
vt100_down_arr,
vt100_right_arr,
vt100_left_arr,
"\177",
"\n",
"\001",
"\005",
"\013",
"\031",
"\003",
"\006",
"\002",
vt100_suppr,
vt100_tab,
"\004",
"\014",
"\r",
"\033\177",
vt100_word_left,
vt100_word_right,
"?",
"\027",
"\020",
"\016",
"\033\144",
vt100_bs,
};
void
vt100_init(struct cmdline_vt100 *vt)
{
if (!vt)
return;
vt->state = CMDLINE_VT100_INIT;
}
static int
match_command(char *buf, unsigned int size)
{
const char *cmd;
size_t cmdlen;
unsigned int i = 0;
for (i=0 ; i<sizeof(cmdline_vt100_commands)/sizeof(const char *) ; i++) {
cmd = *(cmdline_vt100_commands + i);
cmdlen = strnlen(cmd, CMDLINE_VT100_BUF_SIZE);
if (size == cmdlen &&
!strncmp(buf, cmd, cmdlen)) {
return i;
}
}
return -1;
}
int
vt100_parser(struct cmdline_vt100 *vt, char ch)
{
unsigned int size;
uint8_t c = (uint8_t) ch;
if (!vt)
return -1;
if (vt->bufpos >= CMDLINE_VT100_BUF_SIZE) {
vt->state = CMDLINE_VT100_INIT;
vt->bufpos = 0;
}
vt->buf[vt->bufpos++] = c;
size = vt->bufpos;
switch (vt->state) {
case CMDLINE_VT100_INIT:
if (c == 033) {
vt->state = CMDLINE_VT100_ESCAPE;
}
else {
vt->bufpos = 0;
goto match_command;
}
break;
case CMDLINE_VT100_ESCAPE:
if (c == 0133) {
vt->state = CMDLINE_VT100_ESCAPE_CSI;
}
else if (c >= 060 && c <= 0177) { /* XXX 0177 ? */
vt->bufpos = 0;
vt->state = CMDLINE_VT100_INIT;
goto match_command;
}
break;
case CMDLINE_VT100_ESCAPE_CSI:
if (c >= 0100 && c <= 0176) {
vt->bufpos = 0;
vt->state = CMDLINE_VT100_INIT;
goto match_command;
}
break;
default:
vt->bufpos = 0;
break;
}
return -2;
match_command:
return match_command(vt->buf, size);
}
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