1// SPDX-License-Identifier: GPL-2.0
2#include "print_binary.h"
3#include <linux/log2.h>
4#include <linux/ctype.h>
5
6int binary__fprintf(unsigned char *data, size_t len,
7		    size_t bytes_per_line, binary__fprintf_t printer,
8		    void *extra, FILE *fp)
9{
10	size_t i, j, mask;
11	int printed = 0;
12
13	if (!printer)
14		return 0;
15
16	bytes_per_line = roundup_pow_of_two(bytes_per_line);
17	mask = bytes_per_line - 1;
18
19	printed += printer(BINARY_PRINT_DATA_BEGIN, 0, extra, fp);
20	for (i = 0; i < len; i++) {
21		if ((i & mask) == 0) {
22			printed += printer(BINARY_PRINT_LINE_BEGIN, -1, extra, fp);
23			printed += printer(BINARY_PRINT_ADDR, i, extra, fp);
24		}
25
26		printed += printer(BINARY_PRINT_NUM_DATA, data[i], extra, fp);
27
28		if (((i & mask) == mask) || i == len - 1) {
29			for (j = 0; j < mask-(i & mask); j++)
30				printed += printer(BINARY_PRINT_NUM_PAD, -1, extra, fp);
31
32			printer(BINARY_PRINT_SEP, i, extra, fp);
33			for (j = i & ~mask; j <= i; j++)
34				printed += printer(BINARY_PRINT_CHAR_DATA, data[j], extra, fp);
35			for (j = 0; j < mask-(i & mask); j++)
36				printed += printer(BINARY_PRINT_CHAR_PAD, i, extra, fp);
37			printed += printer(BINARY_PRINT_LINE_END, -1, extra, fp);
38		}
39	}
40	printed += printer(BINARY_PRINT_DATA_END, -1, extra, fp);
41	return printed;
42}
43
44int is_printable_array(char *p, unsigned int len)
45{
46	unsigned int i;
47
48	if (!p || !len || p[len - 1] != 0)
49		return 0;
50
51	len--;
52
53	for (i = 0; i < len && p[i]; i++) {
54		if (!isprint(p[i]) && !isspace(p[i]))
55			return 0;
56	}
57	return 1;
58}
59