hexedit.c

   1 /* hexedit -- Hexadecimal Editor for Binary Files
   2    Copyright (C) 1998 Pixel (Pascal Rigaux)
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.*/
  17 #include "hexedit.h"
  18
  19
  20 /*******************************************************************************/
  21 /* Global variables */
  22 /*******************************************************************************/
  23 INT lastEditedLoc, biggestLoc, fileSize;
  24 INT mark_min, mark_max, mark_set;
  25 INT base, oldbase;
  26 int normalSpaces, cursor, cursorOffset, hexOrAscii;
  27 int cursor, blocSize, lineLength, colsUsed, page;
  28 int isReadOnly, fd, nbBytes, oldcursor, oldattr, oldcursorOffset;
  29 int sizeCopyBuffer, *bufferAttr;
  30 char *progName, *fileName, *baseName;
  31 unsigned char *buffer, *copyBuffer;
  32 typePage *edited;
  33
  34 char *lastFindFile = NULL, *lastYankToAFile = NULL, *lastAskHexString = NULL, *lastAskAsciiString = NULL, *lastFillWithStringHexa = NULL, *lastFillWithStringAscii = NULL;
  35
  36
  37 modeParams modes[LAST] = {
  38   { 8, 16, 256 },
  39   { 4, 0, 0 },
  40 };
  41 modeType mode = maximized;
  42 int colored = FALSE;
  43
  44 char * usage = "usage: %s [-s | --sector] [-m | --maximize]"
  45      " [--nocolor] [-h | --help] filename\n";
  46
  47
  48 /*******************************************************************************/
  49 /* main */
  50 /*******************************************************************************/
  51 int main(int argc, char **argv)
  52 {
  53   progName = basename(argv[0]);
  54   argv++; argc--;
  55   colored = TRUE;
  56
  57   for (; argc > 0; argv++, argc--)
  58     {
  59       if (streq(*argv, "-s") || streq(*argv, "--sector"))
  60         mode = bySector;
  61       else if (streq(*argv, "-m") || streq(*argv, "--maximize"))
  62         mode = maximized;
  63       else if (streq(*argv, "--nocolor"))
  64         colored = FALSE;
  65       else if (streq(*argv, "--")) {
  66         argv++; argc--;
  67         break;
  68       } else if (*argv[0] == '-')
  69         DIE(usage)
  70       else break;
  71     }
  72   if (argc > 1) DIE(usage);
  73
  74   init();
  75   if (argc == 1) {
  76     fileName = strdup(*argv);
  77     openFile();
  78   }
  79   initCurses();
  80   if (fileName == NULL) {
  81     if (!findFile()) {
  82       exitCurses();
  83       DIE("%s: No such file\n");
  84     }
  85     openFile();
  86   }
  87   readFile();
  88   do display();
  89   while (key_to_function(getch()));
  90   quit();
  91   return 0; /* for no warning */
  92 }
  93
  94
  95
  96 /*******************************************************************************/
  97 /* other functions */
  98 /*******************************************************************************/
  99 void init(void)
 100 {
 101   page = 0; /* page == 0 means initCurses is not done */
 102   normalSpaces = 3;
 103   hexOrAscii = TRUE;
 104   copyBuffer = NULL;
 105   edited = NULL;
 106 }
 107
 108 void quit(void)
 109 {
 110   exitCurses();
 111   free(fileName);
 112   free(buffer);
 113   free(bufferAttr);
 114   FREE(copyBuffer);
 115   discardEdited();
 116   FREE(lastFindFile); FREE(lastYankToAFile); FREE(lastAskHexString); FREE(lastAskAsciiString); FREE(lastFillWithStringHexa); FREE(lastFillWithStringAscii);
 117   exit(0);
 118 }
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