text: /* Cydia Substrate - Powerful Code Insertion Platform
   * Copyright (C) 2008-2011  Jay Freeman (saurik)
  */
  
  /* GNU Lesser General Public License, Version 3 {{{ */
  /*
   * Substrate is free software: you can redistribute it and/or modify it under
   * the terms of the GNU Lesser General Public License as published by the
   * Free Software Foundation, either version 3 of the License, or (at your
   * option) any later version.
   *
   * Substrate is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
  **/
  /* }}} */
  
  #include "SubstrateHook.h"
  #include "SubstrateDebug.hpp"
  
  #include <stdint.h>
  #include <stdlib.h>
  #include <stdio.h>
  
  _extern bool MSDebug;
  bool MSDebug = false;
  
  static char _MSHexChar(uint8_t value) {
      return value < 0x20 || value >= 0x80 ? '.' : value;
  }
  
  #define HexWidth_ 16
  #define HexDepth_ 4
  
  void MSLogHexEx(const void *vdata, size_t size, size_t stride, const char *mark) {
      const uint8_t *data((const uint8_t *) vdata);
  
      size_t i(0), j;
  
      char d[256];
      size_t b(0);
      d[0] = '\0';
  
      while (i != size) {
          if (i % HexWidth_ == 0) {
              if (mark != NULL)
                  b += sprintf(d + b, "\n[%s] ", mark);
              b += sprintf(d + b, "0x%.3zx:", i);
          }
  
          b += sprintf(d + b, " ");
  
          for (size_t q(0); q != stride; ++q)
              b += sprintf(d + b, "%.2x", data[i + stride - q - 1]);
  
          i += stride;
  
          for (size_t q(1); q != stride; ++q)
              b += sprintf(d + b, " ");
  
          if (i % HexDepth_ == 0)
              b += sprintf(d + b, " ");
  
          if (i % HexWidth_ == 0) {
              b += sprintf(d + b, " ");
              for (j = i - HexWidth_; j != i; ++j)
                  b += sprintf(d + b, "%c", _MSHexChar(data[j]));
  
              lprintf("%s", d);
              b = 0;
              d[0] = '\0';
          }
      }
  
      if (i % HexWidth_ != 0) {
          for (j = i % HexWidth_; j != HexWidth_; ++j)
              b += sprintf(d + b, "   ");
          for (j = 0; j != (HexWidth_ - i % HexWidth_ + HexDepth_ - 1) / HexDepth_; ++j)
              b += sprintf(d + b, " ");
          b += sprintf(d + b, " ");
          for (j = i / HexWidth_ * HexWidth_; j != i; ++j)
              b += sprintf(d + b, "%c", _MSHexChar(data[j]));
  
          lprintf("%s", d);
          b = 0;
          d[0] = '\0';
      }
  }
  
  void MSLogHex(const void *vdata, size_t size, const char *mark) {
      return MSLogHexEx(vdata, size, 1, mark);
  }
  