base/applications/cmdutils/comp/comp.c

   1 /*
   2  *  ReactOS Win32 Applications
   3  *  Copyright (C) 2005 ReactOS Team
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19 /*
  20  * COPYRIGHT:   See COPYING in the top level directory
  21  * PROJECT:     ReactOS comp utility
  22  * FILE:        comp.c
  23  * PURPOSE:     Compares the contents of two files
  24  * PROGRAMMERS: Ged Murphy (gedmurphy@gmail.com)
  25  * REVISIONS:
  26  *   GM 25/09/05 Created
  27  *
  28  */
  29
  30
  31 #include <windows.h>
  32 #include <tchar.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36
  37 #define STRBUF 1024
  38
  39 /* getline:  read a line, return length */
  40 INT GetLine(char *line, FILE *in)
  41 {
  42     if (fgets(line, STRBUF, in) == NULL)
  43         return 0;
  44     else
  45         return strlen(line);
  46 }
  47
  48 /* print program usage */
  49 VOID Usage(VOID)
  50 {
  51     _tprintf(_T("\nCompares the contents of two files or sets of files.\n\n"
  52                 "COMP [data1] [data2]\n\n"
  53                 "  data1      Specifies location and name of first file to compare.\n"
  54                 "  data2      Specifies location and name of second file to compare.\n"));
  55 }
  56
  57
  58 int _tmain (int argc, TCHAR *argv[])
  59 {
  60     INT i;
  61     FILE *fp1, *fp2;           // file pointers
  62     PTCHAR Line1 = (TCHAR *)malloc(STRBUF * sizeof(TCHAR));
  63     PTCHAR Line2 = (TCHAR *)malloc(STRBUF * sizeof(TCHAR));
  64     TCHAR File1[_MAX_PATH],    // file paths
  65           File2[_MAX_PATH];
  66     BOOL bMatch = TRUE,        // files match
  67          bAscii = FALSE,       // /A switch
  68          bLineNos = FALSE;     // /L switch
  69
  70     /* parse command line for options */
  71     for (i = 1; i < argc; i++)
  72     {
  73         if (argv[i][0] == '/')
  74         {
  75             --argc;
  76             switch (argv[i][1]) {
  77                case 'A': bAscii = TRUE;
  78                          _tprintf(_T("/a not Supported\n")); (void)bAscii;   /*FIXME: needs adding */
  79                          break;
  80                case 'L': bLineNos = TRUE;
  81                          _tprintf(_T("/l not supported\n")); (void)bLineNos; /*FIXME: needs adding */
  82                          break;
  83                case '?': Usage();
  84                          return EXIT_SUCCESS;
  85                default:
  86                    _tprintf(_T("Invalid switch - /%c\n"), argv[i][1]);
  87                    Usage();
  88                    return EXIT_FAILURE;
  89             }
  90         }
  91     }
  92
  93     switch (argc)
  94     {
  95         case 1 :
  96                  _tprintf(_T("Name of first file to compare: "));
  97                  fgets(File1, _MAX_PATH, stdin);
  98                  for (i=0; i<_MAX_PATH; i++)
  99                  {
 100                      if (File1[i] == '\n')
 101                      {
 102                          File1[i] = '\0';
 103                          break;
 104                      }
 105                  }
 106
 107                  _tprintf(_T("Name of second file to compare: "));
 108                  fgets(File2, _MAX_PATH, stdin);
 109                  for (i=0; i<_MAX_PATH; i++)
 110                  {
 111                      if (File2[i] == '\n')
 112                      {
 113                          File2[i] = '\0';
 114                          break;
 115                      }
 116                  }
 117                  break;
 118         case 2 :
 119                  _tcsncpy(File1, argv[1], _MAX_PATH);
 120                  _tprintf(_T("Name of second file to compare: "));
 121                  fgets(File2, _MAX_PATH, stdin);
 122                  for (i=0; i<_MAX_PATH; i++)
 123                  {
 124                      if (File2[i] == '\n')
 125                      {
 126                          File2[i] = '\0';
 127                          break;
 128                      }
 129                  }
 130                  break;
 131         case 3 :
 132                  _tcsncpy(File1, argv[1], _MAX_PATH);
 133                  _tcsncpy(File2, argv[2], _MAX_PATH);
 134                  break;
 135         default :
 136                   _tprintf(_T("Bad command line syntax\n"));
 137                   return EXIT_FAILURE;
 138                   break;
 139     }
 140
 141
 142
 143     if ((fp1 = fopen(File1, "r")) == NULL)
 144     {
 145         _tprintf(_T("Can't find/open file: %s\n"), File1);
 146         return EXIT_FAILURE;
 147     }
 148     if ((fp2 = fopen(File2, "r")) == NULL)
 149     {
 150         _tprintf(_T("Can't find/open file: %s\n"), File2);
 151         fclose(fp1);
 152         return EXIT_FAILURE;
 153     }
 154
 155
 156     _tprintf(_T("Comparing %s and %s...\n"), File1, File2);
 157
 158     while ((GetLine(Line1, fp1) != 0) &&
 159            (GetLine(Line2, fp2) != 0))
 160     {
 161         // LineCount++;
 162         while ((*Line1 != '\0') && (*Line2 != '\0'))
 163         {
 164             if (*Line1 != *Line2)
 165             {
 166                 bMatch = FALSE;
 167                 break;
 168             }
 169             Line1++, Line2++;
 170         }
 171     }
 172
 173     bMatch ? _tprintf(_T("Files compare OK\n")) : _tprintf(_T("Files are different sizes.\n"));
 174
 175     fclose(fp1);
 176     fclose(fp2);
 177
 178
 179     return EXIT_SUCCESS;
 180 }
 181 /* EOF */