rosapps/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     INT LineLen1, LineLen2;
  62     FILE *fp1, *fp2;           // file pointers
  63     PTCHAR Line1 = (TCHAR *)malloc(STRBUF * sizeof(TCHAR));
  64     PTCHAR Line2 = (TCHAR *)malloc(STRBUF * sizeof(TCHAR));
  65     TCHAR File1[_MAX_PATH],    // file paths
  66           File2[_MAX_PATH];
  67     BOOL bMatch = TRUE,        // files match
  68          bAscii = FALSE,       // /A switch
  69          bLineNos = FALSE;     // /L switch
  70
  71     /* parse command line for options */
  72     for (i = 1; i < argc; i++)
  73     {
  74         if (argv[i][0] == '/')
  75         {
  76             --argc;
  77             switch (argv[i][1]) {
  78                case 'A': bAscii = TRUE;
  79                          _tprintf(_T("/a not Supported\n")); /*FIXME: needs adding */
  80                          break;
  81                case 'L': bLineNos = TRUE;
  82                          _tprintf(_T("/l not supported\n")); /*FIXME: needs adding */
  83                          break;
  84                case '?': Usage();
  85                          return EXIT_SUCCESS;
  86                default:
  87                    _tprintf(_T("Invalid switch - /%c\n"), argv[i][1]);
  88                    Usage();
  89                    return EXIT_FAILURE;
  90             }
  91         }
  92     }
  93
  94     switch (argc)
  95     {
  96         case 1 :
  97                  _tprintf(_T("Name of first file to compare: "));
  98                  fgets(File1, _MAX_PATH, stdin);
  99                  for (i=0; i<_MAX_PATH; i++)
 100                  {
 101                      if (File1[i] == '\n')
 102                      {
 103                          File1[i] = '\0';
 104                          break;
 105                      }
 106                  }
 107
 108                  _tprintf(_T("Name of second file to compare: "));
 109                  fgets(File2, _MAX_PATH, stdin);
 110                  for (i=0; i<_MAX_PATH; i++)
 111                  {
 112                      if (File2[i] == '\n')
 113                      {
 114                          File2[i] = '\0';
 115                          break;
 116                      }
 117                  }
 118                  break;
 119         case 2 :
 120                  _tcsncpy(File1, argv[1], _MAX_PATH);
 121                  _tprintf(_T("Name of second file to compare: "));
 122                  fgets(File2, _MAX_PATH, stdin);
 123                  for (i=0; i<_MAX_PATH; i++)
 124                  {
 125                      if (File2[i] == '\n')
 126                      {
 127                          File2[i] = '\0';
 128                          break;
 129                      }
 130                  }
 131                  break;
 132         case 3 :
 133                  _tcsncpy(File1, argv[1], _MAX_PATH);
 134                  _tcsncpy(File2, argv[2], _MAX_PATH);
 135                  break;
 136         default :
 137                   _tprintf(_T("Bad command line syntax\n"));
 138                   return EXIT_FAILURE;
 139                   break;
 140     }
 141
 142
 143
 144     if ((fp1 = fopen(File1, "r")) == NULL)
 145     {
 146         _tprintf(_T("Can't find/open file: %s\n"), File1);
 147         return EXIT_FAILURE;
 148     }
 149     if ((fp2 = fopen(File2, "r")) == NULL)
 150     {
 151         _tprintf(_T("Can't find/open file: %s\n"), File2);
 152         fclose(fp1);
 153         return EXIT_FAILURE;
 154     }
 155
 156
 157     _tprintf(_T("Comparing %s and %s...\n"), File1, File2);
 158
 159     while ((LineLen1 = GetLine(Line1, fp1) != 0) &&
 160            (LineLen2 = GetLine(Line2, fp2) != 0))
 161     {
 162         // LineCount++;
 163         while ((*Line1 != '\0') && (*Line2 != '\0'))
 164         {
 165             if (*Line1 != *Line2)
 166             {
 167                 bMatch = FALSE;
 168                 break;
 169             }
 170             Line1++, Line2++;
 171         }
 172     }
 173
 174     bMatch ? _tprintf(_T("Files compare OK\n")) : _tprintf(_T("Files are different sizes.\n"));
 175
 176     fclose(fp1);
 177     fclose(fp2);
 178
 179
 180     return EXIT_SUCCESS;
 181 }
 182 /* EOF */