hostware/commandline/hexdump.c

   1 /* hexdump.c */
   2 /*
   3     This file is part of the ARM-Crypto-Lib.
   4     Copyright (C) 2006-2011 Daniel Otte (daniel.otte@rub.de)
   5
   6     This program is free software: you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation, either version 3 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <ctype.h>
  23 #include <stdint.h>
  24
  25 static
  26 void int_hexdump_line_buffer(FILE* stream, uint8_t* buffer, unsigned width, unsigned fill){
  27         unsigned i;
  28         for(i=0; i<width; ++i){
  29                 if(i<fill){
  30                         fprintf(stream, "%2.2x ", buffer[i]);
  31                 }else{
  32                         fputs("   ", stream);
  33                 }
  34         }
  35         fputs("    |", stream);
  36         for(i=0; i<width; ++i){
  37                 if(i<fill){
  38                         if(isgraph(buffer[i])){
  39                                 fputc(buffer[i], stream);
  40                         }else
  41                                 fputc('.', stream);
  42                 }else{
  43                         fputs(" ", stream);
  44                 }
  45         }
  46         fputc('|', stream);
  47
  48 }
  49
  50
  51 void hexdump_block(FILE* stream, void* block, void* print_addr, unsigned length, unsigned width){
  52         uint8_t buffer[width];
  53         unsigned index=0;
  54         while(length>width){
  55                 memcpy(buffer, block, width);
  56                 if(print_addr){
  57                         fprintf(stream, "%8.8x ", (uint32_t)print_addr);
  58                         print_addr = (uint8_t*)print_addr + width;
  59                 }
  60                 fprintf(stream, "<%4.4x>: ", index);
  61                 int_hexdump_line_buffer(stream, buffer, width, width);
  62                 fputc('\n', stream);
  63                 block = (uint8_t*)block + width;
  64                 length -= width;
  65                 index += width;
  66         }
  67         memcpy(buffer, block, length);
  68         if(print_addr){
  69                 fprintf(stream, "%8.8x ", (uint32_t)print_addr);
  70         }
  71         fprintf(stream, "<%4.4x>: ", index);
  72         int_hexdump_line_buffer(stream, buffer, width, length);
  73         fputc('\n', stream);
  74 }