1 #include <debug.h> 2 #include <stdio.h> 3 #include <ctype.h> 4 5 #define NUM_COLS (32) 6 7 /* returns the number of non-zero non-printable characters. */ 8 9 int dump_hex_buffer(FILE *s, void *b, size_t len, size_t elsize) { 10 int num_nonprintable = 0; 11 int i, last; 12 char *pchr = (char *)b; 13 fputc('\n', s); 14 for (i = last = 0; i < len; i++) { 15 if (!elsize) { 16 if (i && !(i % 4)) fprintf(s, " "); 17 if (i && !(i % 8)) fprintf(s, " "); 18 } else { 19 if (i && !(i % elsize)) fprintf(s, " "); 20 } 21 22 if (i && !(i % NUM_COLS)) { 23 while (last < i) { 24 if (isprint(pchr[last])) 25 fputc(pchr[last], s); 26 else { 27 fputc('.', s); 28 if(pchr[last]) 29 num_nonprintable++; 30 } 31 last++; 32 } 33 fprintf(s, " (%d)\n", i); 34 } 35 fprintf(s, "%02x", (unsigned char)pchr[i]); 36 } 37 if (i && (i % NUM_COLS)) fputs("\n", s); 38 return num_nonprintable; 39 } 40
