There are a number of tools (many non-Perl) that will do this for you. However, to help you, it would help to know:

For this kind of comparison I generally use TkDiff

or

Meld or just plain old diff at the command line(this is on *nix of course).

There are numerous tools for Windows as well. Winmerg being one of the free ones.

If you are looking for exclusively programmatic solutions, then knowing more about your environment is almost mandatory.

A quick google search for "diff tools written in perl" came back with Algorithm::Diff, which contrary to its name seems to do what you are describing."Algorithm::Diff - Compute `intelligent' differences between two files / lists"

Hope something in there is useful...

  • ...the majority is always wrong, and always the last to know about it...
  • ..by my will, and by will alone.. I set my mind in motion

In reply to Re: XML Compare and exact differences need to be listed out by wjw
in thread XML Compare and exact differences need to be listed out by srikrishnan

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.