Text::WordDiff::HTMLTwoLines(3) XHTML formatting for Text::WordDiff with content on two lines


    use Text::WordDiff;
    my $diff = word_diff 'file1.txt', 'file2.txt';  { STYLE => 'HTMLTwoLines' };
    my $diff = word_diff \$string1,   \$string2,    { STYLE => 'HTMLTwoLines' };
    my $diff = word_diff \*FH1,       \*FH2,        { STYLE => 'HTMLTwoLines' };
    my $diff = word_diff \&reader1,   \&reader2,    { STYLE => 'HTMLTwoLines' };
    my $diff = word_diff \@records1,  \@records2,   { STYLE => 'HTMLTwoLines' };
    # May also mix input types:
    my $diff = word_diff \@records1,  'file_B.txt', { STYLE => 'HTMLTwoLines' };


This class subclasses Text::WordDiff::Base to provide a XHTML formatting for Text::WordDiff. See Term::WordDiff for usage details. This class should never be used directly.

Text::WordDiff::HTMLTwoLines formats word diffs for viewing in a Web browser. The output is similar to that produced by Term::WordDiff::HTML but the two lines (or files, records, etc.) are shown separately, with deleted items highlighted in the first line and inserted items highlighted in the second. HTMLTwoLines puts a span tag around each word or set of words in the diff.

The diff content is highlighted as follows:

"<div class="file">"

The inputs to "word_diff()" are each contained in a div element of class ``file''. All the following results are subsumed by these elements.

"<span class="fileheader">"

The header section for the files being "diff"ed, usually something like:

  --- in.txt    Thu Sep  1 12:51:03 2005

for the first file, and

  +++ out.txt   Thu Sep  1 12:52:12 2005

for the second.

This element immediately follows the opening ``file'' "<div>" element, but will not be present if Text::WordDiff cannot determine the file names for both files being compared.

"<span class="hunk">"

This element contains a single diff ``hunk''. Each hunk may contain the following elements:

  • "<ins>"

    Inserted content.

  • "<del>"

    Deleted content.

You may do whatever you like with these elements and classes; I highly recommend that you style them using CSS. You'll find an example CSS file in the eg directory in the Text-WordDiff distribution.

See Also



Amelia Ireland <join(``.'', $firstname, $lastname) . ``@gmail.com''>

Copyright and License

Copyright (c) 2011 Amelia Ireland. Some Rights Reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.