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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 Intel Corporation. All rights reserved.
*
*
*/
#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;
}
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