Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / tools / perl-5.8.0 / lib / site_perl / 5.8.0 / Algorithm / htmldiff.pl

#!/usr/bin/perl -w
# diffs two files and writes an HTML output file.
use strict;
use CGI qw(:standard :html3);
use Algorithm::Diff 'traverse_sequences';
use Text::Tabs;

my ( @a, @b );

# Take care of whitespace.
sub preprocess
{
       my $arrayRef = shift;
       chomp(@$arrayRef);
       @$arrayRef = expand(@$arrayRef);
}

# This will be called with both lines are the same
sub match
{
       my ( $ia, $ib ) = @_;
       print pre( $a[$ia] ), "\n";
}

# This will be called when there is a line in A that isn't in B
sub only_a
{
       my ( $ia, $ib ) = @_;
       print pre( { -class => 'onlyA' }, $a[$ia] ), "\n";
}

# This will be called when there is a line in B that isn't in A
sub only_b
{
       my ( $ia, $ib ) = @_;
       print pre( { -class => 'onlyB' }, $b[$ib] ), "\n";
}

# MAIN PROGRAM

# Check for two arguments.
print "usage: $0 file1 file2 > diff.html\n" if @ARGV != 2;

$tabstop = 4;    # For Text::Tabs

# Read each file into an array.
open FH, $ARGV[0];
@a = <FH>;
close FH;

open FH, $ARGV[1];
@b = <FH>;
close FH;

# Expand whitespace
preprocess( \@a );
preprocess( \@b );

# inline style
my $style = <<EOS;
       PRE {
               margin-left: 24pt; 
               font-size: 12pt;
           font-family: Courier, monospaced;
               white-space: pre
   }
       PRE.onlyA { color: red }
       PRE.onlyB { color: blue }
EOS

# Print out the starting HTML
print

 # header(),
 start_html(
       {
               -title => "$ARGV[0] vs. $ARGV[1]",
               -style => { -code => $style }
       }
 ),
 h1(
       { -style => 'margin-left: 24pt' },
       span( { -style => 'color: red' }, $ARGV[0] ),
       span(" <i>vs.</i> "),
       span( { -style => 'color: blue' }, $ARGV[1] )
 ),
 "\n";

# And compare the arrays
traverse_sequences(
       \@a,    # first sequence
       \@b,    # second sequence
       {
               MATCH     => \&match,     # callback on identical lines
               DISCARD_A => \&only_a,    # callback on A-only
               DISCARD_B => \&only_b,    # callback on B-only
       }
);

print end_html();