core/applications/utilities/bytedump.cpp

   1 /*****************************************************************************\
   2 *                                                                             *
   3 *  Name   : dump_bytes                                                        *
   4 *  Author : Chris Koeritz                                                     *
   5 *                                                                             *
   6 *  Purpose:                                                                   *
   7 *                                                                             *
   8 *    Prints the files specified out in terms of their hex bytes.              *
   9 *                                                                             *
  10 *******************************************************************************
  11 * Copyright (c) 1991-$now By Author.  This program is free software; you can  *
  12 * redistribute it and/or modify it under the terms of the GNU General Public  *
  13 * License as published by the Free Software Foundation; either version 2 of   *
  14 * the License or (at your option) any later version.  This is online at:      *
  15 *     http://www.fsf.org/copyleft/gpl.html                                    *
  16 * Please send any updates to: fred@gruntose.com                               *
  17 \*****************************************************************************/
  18
  19 #include <application/hoople_main.h>
  20 #include <basis/astring.h>
  21 #include <filesystem/byte_filer.h>
  22 #include <loggers/console_logger.h>
  23 #include <structures/static_memory_gremlin.h>
  24 #include <textual/byte_formatter.h>
  25
  26 using namespace application;
  27 using namespace basis;
  28 using namespace loggers;
  29 using namespace filesystem;
  30 using namespace structures;
  31 using namespace textual;
  32
  33 ///HOOPLE_STARTUP_CODE;
  34
  35 const int MAXIMUM_BYTEDUMP_BUFFER_SIZE = 32768;
  36   // this is the size of the chunk we read from the files at a time.  it is
  37   // important to make this a multiple of 16, since that's the size of the line
  38   // we use in the byte dumping.
  39
  40 #define console program_wide_logger::get()
  41
  42 int print_instructions_and_exit(char *program_name)
  43 {
  44   console.log(astring(astring::SPRINTF, "\n\
  45 Usage:\n\t%s filename [filename]\n\n\
  46 Prints out (on standard output) a abyte dump of the files specified.\n\n",
  47       program_name), ALWAYS_PRINT);
  48   return 12;
  49 }
  50
  51 int main(int argc, char *argv[])
  52 {
  53   SETUP_CONSOLE_LOGGER;
  54
  55   if (argc <= 1) return print_instructions_and_exit(argv[0]);
  56   else {
  57     int current_parameter = 0;
  58 /*
  59     if (argv[1][0] == '-') {
  60       if (argv[1][1] == 't') {
  61         current_parameter++;
  62         open_file_as_text = true;
  63       } else if (argv[1][1] == 'b') {
  64         current_parameter++;
  65         open_file_as_text = false;
  66       } else print_instructions_and_exit(argv[0]);
  67     }
  68 */
  69     bool past_first_file = false;
  70     while (++current_parameter < argc) {
  71       if (past_first_file) {
  72         // we're into the second file so start using some white space.
  73         console.log(astring::empty_string(), ALWAYS_PRINT);
  74         console.log(astring::empty_string(), ALWAYS_PRINT);
  75       }
  76       past_first_file = true;  // set condition for next time.
  77       astring name = argv[current_parameter];
  78       byte_filer current(name, "rb");
  79       if (!current.good()) {
  80         console.log(astring("Cannot find the file named \"") + name + astring("\"."),
  81             ALWAYS_PRINT);
  82         continue;
  83       }
  84       abyte buff[MAXIMUM_BYTEDUMP_BUFFER_SIZE + 10];
  85         // buffer plus some extra room.
  86       bool printed_header = false;
  87       int current_label = 0;
  88       while (true) {
  89         int bytes_read = current.read(buff, MAXIMUM_BYTEDUMP_BUFFER_SIZE);
  90         if (bytes_read <= 0) break;  // no contents.
  91 //console.log(astring(astring::SPRINTF, "read %d bytes", bytes_read));
  92         if (!printed_header) {
  93           console.log(name + ":", ALWAYS_PRINT);
  94           console.log(astring::empty_string(), ALWAYS_PRINT);  // blank line.
  95           printed_header = true;
  96         }
  97         astring to_log = byte_formatter::text_dump(buff, bytes_read,
  98             current_label);
  99         if (to_log[to_log.end()] == '\n')
 100           to_log.zap(to_log.end(), to_log.end());
 101         console.log(to_log, ALWAYS_PRINT);
 102         current_label += bytes_read;
 103       }
 104     }
 105   }
 106   return 0;
 107 }
 108