[ceph.git] / ceph / src / seastar / dpdk / lib / librte_cmdline / cmdline_vt100.c

/* 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);
}
Commit	Line	Data
9f95a23c TL	1	/* SPDX-License-Identifier: BSD-3-Clause
9f95a23c TL	2	* Copyright(c) 2010-2014 Intel Corporation.
7c673cae FG	3	* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
7c673cae FG	4	* All rights reserved.
7c673cae FG	5	*/
	6
	7	#include <stdlib.h>
	8	#include <stdint.h>
	9	#include <stdio.h>
	10	#include <string.h>
	11	#include <stdarg.h>
	12	#include <ctype.h>
	13	#include <termios.h>
	14
	15	#include "cmdline_vt100.h"
	16
	17	const char *cmdline_vt100_commands[] = {
	18	vt100_up_arr,
	19	vt100_down_arr,
	20	vt100_right_arr,
	21	vt100_left_arr,
	22	"\177",
	23	"\n",
	24	"\001",
	25	"\005",
	26	"\013",
	27	"\031",
	28	"\003",
	29	"\006",
	30	"\002",
	31	vt100_suppr,
	32	vt100_tab,
	33	"\004",
	34	"\014",
	35	"\r",
	36	"\033\177",
	37	vt100_word_left,
	38	vt100_word_right,
	39	"?",
	40	"\027",
	41	"\020",
	42	"\016",
	43	"\033\144",
9f95a23c	44	vt100_bs,
7c673cae FG	45	};
	46
	47	void
	48	vt100_init(struct cmdline_vt100 *vt)
	49	{
	50	if (!vt)
	51	return;
	52	vt->state = CMDLINE_VT100_INIT;
	53	}
	54
	55
	56	static int
	57	match_command(char *buf, unsigned int size)
	58	{
	59	const char *cmd;
	60	size_t cmdlen;
	61	unsigned int i = 0;
	62
	63	for (i=0 ; i<sizeof(cmdline_vt100_commands)/sizeof(const char *) ; i++) {
	64	cmd = *(cmdline_vt100_commands + i);
	65
	66	cmdlen = strnlen(cmd, CMDLINE_VT100_BUF_SIZE);
	67	if (size == cmdlen &&
	68	!strncmp(buf, cmd, cmdlen)) {
	69	return i;
	70	}
	71	}
	72
	73	return -1;
	74	}
	75
	76	int
	77	vt100_parser(struct cmdline_vt100 *vt, char ch)
	78	{
	79	unsigned int size;
	80	uint8_t c = (uint8_t) ch;
	81
	82	if (!vt)
	83	return -1;
	84
	85	if (vt->bufpos >= CMDLINE_VT100_BUF_SIZE) {
	86	vt->state = CMDLINE_VT100_INIT;
	87	vt->bufpos = 0;
	88	}
	89
	90	vt->buf[vt->bufpos++] = c;
	91	size = vt->bufpos;
	92
	93	switch (vt->state) {
	94	case CMDLINE_VT100_INIT:
	95	if (c == 033) {
	96	vt->state = CMDLINE_VT100_ESCAPE;
	97	}
	98	else {
	99	vt->bufpos = 0;
	100	goto match_command;
	101	}
	102	break;
	103
	104	case CMDLINE_VT100_ESCAPE:
	105	if (c == 0133) {
	106	vt->state = CMDLINE_VT100_ESCAPE_CSI;
	107	}
	108	else if (c >= 060 && c <= 0177) { /* XXX 0177 ? */
109	vt->bufpos = 0;
110	vt->state = CMDLINE_VT100_INIT;
111	goto match_command;
112	}
113	break;
114
115	case CMDLINE_VT100_ESCAPE_CSI:
116	if (c >= 0100 && c <= 0176) {
117	vt->bufpos = 0;
118	vt->state = CMDLINE_VT100_INIT;
119	goto match_command;
120	}
121	break;
122
123	default:
124	vt->bufpos = 0;
125	break;
126	}
127
128	return -2;
129
130	match_command:
131	return match_command(vt->buf, size);
132	}