/*

 *

 *  BlueZ - Bluetooth protocol stack for Linux

 *

 *  Copyright (C) 2012  Intel Corporation. All rights reserved.

 *

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#define _GNU_SOURCE

#include <stdio.h>

#include <stdlib.h>

#include <stdarg.h>

#include <stdbool.h>

#include <ctype.h>

#include <readline/readline.h>

#include "display.h"

static char *saved_prompt = NULL;

static int saved_point = 0;

static rl_prompt_input_func saved_func = NULL;

static void *saved_user_data = NULL;

void rl_printf(const char *fmt, ...)

{

	va_list args;

	bool save_input;

	char *saved_line;

	int saved_point;

	save_input = !RL_ISSTATE(RL_STATE_DONE);

	if (save_input) {

		saved_point = rl_point;

		saved_line = rl_copy_text(0, rl_end);

		rl_save_prompt();

		rl_replace_line("", 0);

		rl_redisplay();

	}

	va_start(args, fmt);

	vprintf(fmt, args);

	va_end(args);

	if (save_input) {

		rl_restore_prompt();

		rl_replace_line(saved_line, 0);

		rl_point = saved_point;

		rl_forced_update_display();

		free(saved_line);

	}

}

void rl_hexdump(const unsigned char *buf, size_t len)

{

	static const char hexdigits[] = "0123456789abcdef";

	char str[68];

	size_t i;

	if (!len)

		return;

	str[0] = ' ';

	for (i = 0; i < len; i++) {

		str[((i % 16) * 3) + 1] = ' ';

		str[((i % 16) * 3) + 2] = hexdigits[buf[i] >> 4];

		str[((i % 16) * 3) + 3] = hexdigits[buf[i] & 0xf];

		str[(i % 16) + 51] = isprint(buf[i]) ? buf[i] : '.';

		if ((i + 1) % 16 == 0) {

			str[49] = ' ';

			str[50] = ' ';

			str[67] = '\0';

			rl_printf("%s\n", str);

			str[0] = ' ';

		}

	}

	if (i % 16 > 0) {

		size_t j;

		for (j = (i % 16); j < 16; j++) {

			str[(j * 3) + 1] = ' ';

			str[(j * 3) + 2] = ' ';

			str[(j * 3) + 3] = ' ';

			str[j + 51] = ' ';

		}

		str[49] = ' ';

		str[50] = ' ';

		str[67] = '\0';

		rl_printf("%s\n", str);

	}

}

void rl_prompt_input(const char *label, const char *msg,

				rl_prompt_input_func func, void *user_data)

{

	char prompt[256];

	/* Normal use should not prompt for user input to the value a second

	 * time before it releases the prompt, but we take a safe action. */

	if (saved_prompt)

		return;

	saved_point = rl_point;

	saved_prompt = strdup(rl_prompt);

	saved_func = func;

	saved_user_data = user_data;

	rl_set_prompt("");

	rl_redisplay();

	memset(prompt, 0, sizeof(prompt));

	snprintf(prompt, sizeof(prompt), COLOR_RED "[%s]" COLOR_OFF " %s ",

								label, msg);

	rl_set_prompt(prompt);

	rl_replace_line("", 0);

	rl_redisplay();

}

int rl_release_prompt(const char *input)

{

	rl_prompt_input_func func;

	void *user_data;

	if (!saved_prompt)

		return -1;

	/* This will cause rl_expand_prompt to re-run over the last prompt, but

	 * our prompt doesn't expand anyway. */

	rl_set_prompt(saved_prompt);

	rl_replace_line("", 0);

	rl_point = saved_point;

	rl_redisplay();

	free(saved_prompt);

	saved_prompt = NULL;

	func = saved_func;

	user_data = saved_user_data;

	saved_func = NULL;

	saved_user_data = NULL;

	func(input, user_data);

	return 0;

}