GNU Linux-libre 4.19.211-gnu1
[releases.git] / tools / perf / util / print_binary.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include "print_binary.h"
3 #include <linux/log2.h>
4 #include "sane_ctype.h"
5
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
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 }