1 // SPDX-License-Identifier: GPL-2.0
2 #include "print_binary.h"
3 #include <linux/log2.h>
4 #include <linux/ctype.h>
5 
binary__fprintf(unsigned char * data,size_t len,size_t bytes_per_line,binary__fprintf_t printer,void * extra,FILE * fp)6 int 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 
is_printable_array(char * p,unsigned int len)44 int 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