Hi,

I want to compare two .mdb(Microsoft access files), to find are there any changes done on the files, for that I just wrote the below function.

sub compare {
  my $pre_version   =shift;
  my $new_version   =shift;
  print("previous version: $pre_version\n");
  print("new version : $new_version\n");
  my $pre = Digest::MD5->new;
  open (PRE, "$pre_version");
  $pre->addfile(*PRE);
  close(PRE);
  my $pre_digest = $pre->hexdigest;
  #print "pre digest=$pre_digest\n";

  my $new = Digest::MD5->new;
  open (NEW, "$new_version");
  $new->addfile(*NEW);
  close(NEW);
  my $new_digest = $new->hexdigest;
  #print "new digest=$new_digest\n";
  
  if ($pre_digest eq $new_digest) {
    print("Equal\n");
    return 0;
  } else {
    print("Not Equal\n");
    return 1;
  }
}

[download]
Update: Variable names modified.

Even thought there are no changes between two MDB files I am always getting "Not Equal".

pre_version of the MDB file downloaded from git and new_version was a local copy. before pushing to the git repository I want to make sure there are some difference. If the are no difference I need to block the push.

All is well. I learn by answering your questions...

In reply to Comparing MDB files. by vinoth.ree

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.