perf/util/print_binary.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include "print_binary.h"
0003 #include <linux/log2.h>
0004 #include <linux/ctype.h>
0005
0006 int binary__fprintf(unsigned char *data, size_t len,
0007             size_t bytes_per_line, binary__fprintf_t printer,
0008             void *extra, FILE *fp)
0009 {
0010     size_t i, j, mask;
0011     int printed = 0;
0012
0013     if (!printer)
0014         return 0;
0015
0016     bytes_per_line = roundup_pow_of_two(bytes_per_line);
0017     mask = bytes_per_line - 1;
0018
0019     printed += printer(BINARY_PRINT_DATA_BEGIN, 0, extra, fp);
0020     for (i = 0; i < len; i++) {
0021         if ((i & mask) == 0) {
0022             printed += printer(BINARY_PRINT_LINE_BEGIN, -1, extra, fp);
0023             printed += printer(BINARY_PRINT_ADDR, i, extra, fp);
0024         }
0025
0026         printed += printer(BINARY_PRINT_NUM_DATA, data[i], extra, fp);
0027
0028         if (((i & mask) == mask) || i == len - 1) {
0029             for (j = 0; j < mask-(i & mask); j++)
0030                 printed += printer(BINARY_PRINT_NUM_PAD, -1, extra, fp);
0031
0032             printer(BINARY_PRINT_SEP, i, extra, fp);
0033             for (j = i & ~mask; j <= i; j++)
0034                 printed += printer(BINARY_PRINT_CHAR_DATA, data[j], extra, fp);
0035             for (j = 0; j < mask-(i & mask); j++)
0036                 printed += printer(BINARY_PRINT_CHAR_PAD, i, extra, fp);
0037             printed += printer(BINARY_PRINT_LINE_END, -1, extra, fp);
0038         }
0039     }
0040     printed += printer(BINARY_PRINT_DATA_END, -1, extra, fp);
0041     return printed;
0042 }
0043
0044 int is_printable_array(char *p, unsigned int len)
0045 {
0046     unsigned int i;
0047
0048     if (!p || !len || p[len - 1] != 0)
0049         return 0;
0050
0051     len--;
0052
0053     for (i = 0; i < len && p[i]; i++) {
0054         if (!isprint(p[i]) && !isspace(p[i]))
0055             return 0;
0056     }
0057     return 1;
0058 }