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#!/usr/bin/perl -w
#show-phrases-used: display all source and target phrases for each sentence in a corpus, and give average phrase length used
#usage: show-phrases-used DECODER_OUTFILE > output.html
# where DECODER_OUTFILE is the output of moses with the -T (show alignments) option
use strict;
BEGIN
{
my $wd = `pwd`; chop $wd;
push @INC, "$wd/perllib/sun4-solaris"; #for GD; if not an absolute path, Polygon.pm throws a fit
}
use lib "perllib/sun4-solaris/auto/GD";
use GD;
use GD::Image;
use GD::Polygon;
#parse decoder output
my $infilename = shift @ARGV;
open(INPUT, "<$infilename") or die "couldn't open '$infilename' for read: $!\n"; #stdin
my @sentenceData = ([], [], [], []); #(phrases used; dropped words (as factor arrays); average phrase lengths; phrase max char counts per word) per sentence
my $curSentence = -1;
my @numSrcChars = (); #used for alignment in image
my @numTgtChars = ();
my @numSrcPhrases = ();
my @numTgtPhrases = ();
my ($sentenceSrcChars, $sentenceTgtChars, $sentenceSrcPhrases, $sentenceTgtPhrases, $tgtWords);
my $mode = 'none';
while(my $line = <INPUT>)
{
$mode = 'none' if $line =~ /^\s*\n$/; #a blank line ends any section
if($line =~ /TRANSLATION HYPOTHESIS DETAILS:/) #first useful info printed per sentence, so we have a new sentence
{
$mode = 'opts';
if($curSentence > -1)
{
push @numSrcChars, $sentenceSrcChars;
push @numTgtChars, $sentenceTgtChars;
push @numSrcPhrases, $sentenceSrcPhrases;
push @numTgtPhrases, $sentenceTgtPhrases;
}
$curSentence++;
$sentenceSrcChars = 0; $sentenceTgtChars = 0;
$sentenceSrcPhrases = 0; $sentenceTgtPhrases = 0;
$tgtWords = 0;
push @{$sentenceData[0]}, [];
push @{$sentenceData[1]}, [];
push @{$sentenceData[2]}, 0;
}
elsif($line =~ /SOURCE\/TARGET SPANS:/) {$mode = 'spans';} #redundant info; we won't check this mode below
elsif($line =~ /WORDS\/PHRASES DROPPED:/) {$mode = 'drops';}
#read info when in a mode
elsif($mode eq 'opts')
{
die "can't parse translation-options info for sentence $curSentence" unless $line =~ /SOURCE:\s+\[(\d+)\.\.(\d+)\]\s+(\S(.*\S)?)\s*$/;
my %details;
$details{'srcStart'} = $1;
$details{'srcEnd'} = $2;
my @srcFactors = map {my @f = split(/\|/, $_); \@f;} (split(/\s+/, $3));
$details{'srcText'} = \@srcFactors;
$sentenceData[2]->[$curSentence] += $2 - $1 + 1; #build sum of phrase lengths
$details{'srcNumChars'} = 0;
foreach my $word (@srcFactors) {$details{'srcNumChars'} += maxN(map {length($_)} @$word) + 1;} #+1 accounts for interword spacing
$sentenceSrcChars += --$details{'srcNumChars'};
$sentenceSrcPhrases++;
$line = <INPUT>;
die "can't parse translation-options info for sentence $curSentence" unless $line =~ /TRANSLATED AS:\s+(\S(.*\S)?)\s*$/;
my @words = split(/\s+/, $1);
if($words[0] eq '<EPSILON>') {@words = ();} #source phrase was dropped
else {$sentenceTgtPhrases++;}
my @tgtFactors = map {my @f = split(/\|/, $_); \@f;} (split(/\s+/, $1));
$details{'tgtText'} = \@tgtFactors;
$details{'tgtNumChars'} = 0;
foreach my $word (@tgtFactors) {$details{'tgtNumChars'} += maxN(map {length($_)} @$word) + 1;} #+1 accounts for interword spacing
$sentenceTgtChars += --$details{'tgtNumChars'};
$details{'tgtStart'} = $tgtWords;
$tgtWords += scalar(@words);
$details{'tgtEnd'} = $tgtWords - 1;
push @{$sentenceData[0]->[$curSentence]}, \%details;
}
elsif($mode eq 'drops') #redundant info; read it just because we can (stickin' it to the man!)
{
die "can't parse dropped-words info for sentence $curSentence\n" unless $line =~ /\s*(\S.*\S)\s*/;
my @factors = split(/\|/, $1);
push @{$sentenceData[1]->[$curSentence]}, \@factors;
}
}
close(INPUT);
#stats for final sentence, since now we know when it ended
push @numSrcChars, $sentenceSrcChars;
push @numTgtChars, $sentenceTgtChars;
push @numSrcPhrases, $sentenceSrcPhrases;
push @numTgtPhrases, $sentenceTgtPhrases;
#calculate phrase-length statistics
my ($totalPhraseLength, $totalNumPhrases) = (0, 0);
for(my $i = 0; $i < scalar(@{$sentenceData[0]}); $i++)
{
$totalPhraseLength += $sentenceData[2]->[$i];
$totalNumPhrases += scalar(@{$sentenceData[0]->[$i]});
$sentenceData[2]->[$i] /= scalar(@{$sentenceData[0]->[$i]});
}
##### create an image with colored phrases and arrows for each sentence #####
die "infilename ends in slash! should not be a directory\n" if $infilename !~ /\/([^\/]+)$/;
my $imgdir = "phraseImgs-tmp/${1}_" . time;
`mkdir -p $imgdir`; #-p => create recursively as necessary
my ($srcNumFactors, $tgtNumFactors) = (scalar(@{$sentenceData[0]->[0]->[0]->{'srcText'}->[0]}), scalar(@{$sentenceData[0]->[0]->[0]->{'tgtText'}->[0]}));
my $font = gdLargeFont;
my ($topMargin, $bottomMargin, $leftMargin, $rightMargin) = (1, 1, 1, 1); #extra pixels of background color
my $phraseEdgeHSpace = int($font->width / 2); #number of boundary pixels at horizontal edges of each phrase
my $phraseEdgeVSpace = 1; #number of boundary pixels at vertical edges
my $middleVSpace = $font->height + 6; #vertical pixels used to connect phrase color boxes
#precompute arrays of pixel coords
my $srcY = $topMargin + $phraseEdgeVSpace;
my @srcFactorYs;
for(my $i = 0; $i < $srcNumFactors; $i++) {push @srcFactorYs, $srcY + ($font->height + $phraseEdgeVSpace) * $i;}
my @tgtFactorYs;
my $tgtY = $srcY + ($font->height + $phraseEdgeVSpace) * $srcNumFactors + $middleVSpace + $phraseEdgeVSpace;
for(my $i = 0; $i < $tgtNumFactors; $i++) {push @tgtFactorYs, $tgtY + ($font->height + $phraseEdgeVSpace) * $i;}
for(my $i = 0; $i < scalar(@{$sentenceData[0]}); $i++)
{
#create image
my $img = new GD::Image($leftMargin + $rightMargin + max($font->width * $numSrcChars[$i] + $numSrcPhrases[$i] * 2 * $phraseEdgeHSpace,
$font->width * $numTgtChars[$i] + $numTgtPhrases[$i] * 2 * $phraseEdgeHSpace),
$topMargin + $bottomMargin + $middleVSpace + ($font->height + $phraseEdgeVSpace) * ($srcNumFactors + $tgtNumFactors) + 2 * $phraseEdgeVSpace);
#allocate colors
my $white = $img->colorAllocate(255, 255, 255);
$img->transparent($white); #set white to be transparent
my $black = $img->colorAllocate(0, 0, 0);
my $highlightCol = $img->colorAllocate(255, 0, 0); #used to show deleted source phrases
my @bgCols = #alternating phrase background colors
(
$img->colorAllocate(165, 255, 138), #green
$img->colorAllocate(237, 239, 133), #yellow
$img->colorAllocate(255, 200, 72), #tan
$img->colorAllocate(255, 172, 98), #orange
$img->colorAllocate(255, 151, 151), #red
$img->colorAllocate(254, 152, 241), #purple
$img->colorAllocate(170, 170, 255), #blue
$img->colorAllocate(165, 254, 250) #cyan
);
$img->setThickness(2); #for lines connecting phrases
#get order of source phrases and source-phrase background colors
my @srcPhraseIndices = (); #in each position, which phrase will be displayed next
my @srcBGCols = () x $numSrcPhrases[$i]; #indices into bgCols
my $nextWord = 0; #current starting index we're looking for
while(scalar(@srcPhraseIndices) < $numSrcPhrases[$i])
{
for(my $k = 0; $k < $numSrcPhrases[$i]; $k++)
{
if($sentenceData[0]->[$i]->[$k]->{'srcStart'} == $nextWord)
{
$srcBGCols[$k] = scalar(@srcPhraseIndices) % scalar(@bgCols);
push @srcPhraseIndices, $k;
$nextWord = $sentenceData[0]->[$i]->[$k]->{'srcEnd'} + 1;
last;
}
}
}
#calculate source-phrase pixel addresses
my @srcStartX = () x $numSrcPhrases[$i];
my $srcX = $leftMargin; #in pixels
for(my $j = 0; $j < $numSrcPhrases[$i]; $j++)
{
$srcStartX[$j] = $srcX;
$srcX += $font->width * $sentenceData[0]->[$i]->[$j]->{'srcNumChars'} + 2 * $phraseEdgeHSpace;
}
#get target-phrase pixel coords
my @tgtStartX = () x $numSrcPhrases[$i]; #elements belonging to deleted source phrases simply aren't used
my $tgtX = $leftMargin; #in pixels
for(my $j = 0; $j < $numSrcPhrases[$i]; $j++)
{
my $k = $srcPhraseIndices[$j];
if(length($sentenceData[0]->[$i]->[$k]->{'tgtText'}) > 0) #non-empty target phrase
{
$tgtStartX[$j] = $tgtX;
$tgtX += $font->width * $sentenceData[0]->[$i]->[$k]->{'tgtNumChars'} + 2 * $phraseEdgeHSpace;
}
}
#background
$img->filledRectangle(0, 0, $img->width, $img->height, $white);
#write phrase pairs
for(my $j = 0; $j < $numSrcPhrases[$i]; $j++)
{
my $k = $srcPhraseIndices[$j];
my $srcBottomY = $srcY + ($font->height + $phraseEdgeVSpace) * $srcNumFactors; #bottom of color
$img->filledRectangle($srcStartX[$k], $srcY - $phraseEdgeVSpace, $srcStartX[$k] + $font->width * $sentenceData[0]->[$i]->[$k]->{'srcNumChars'} + 2 * $phraseEdgeHSpace,
$srcBottomY, $bgCols[$srcBGCols[$k]]);
if(length $sentenceData[0]->[$i]->[$k]->{'tgtText'} > 0) #non-empty target phrase
{
$img->filledRectangle($tgtStartX[$j], $tgtY - $phraseEdgeVSpace, $tgtStartX[$j] + $font->width * $sentenceData[0]->[$i]->[$k]->{'tgtNumChars'} + 2 * $phraseEdgeHSpace,
$tgtY + ($font->height + $phraseEdgeVSpace) * $tgtNumFactors, $bgCols[$srcBGCols[$k]]);
my ($srcMidX, $tgtMidX) = ($srcStartX[$k] + $font->width * $sentenceData[0]->[$i]->[$k]->{'srcNumChars'} / 2 + $phraseEdgeHSpace,
$tgtStartX[$j] + $font->width * $sentenceData[0]->[$i]->[$k]->{'tgtNumChars'} / 2 + $phraseEdgeHSpace);
$img->line($srcMidX, $srcBottomY, $tgtMidX, $tgtY, $bgCols[$srcBGCols[$k]]);
writeFactoredStringGD($img, $srcStartX[$k] + $phraseEdgeHSpace, \@srcFactorYs, $sentenceData[0]->[$i]->[$k]->{'srcText'}, $font, $black);
writeFactoredStringGD($img, $tgtStartX[$j] + $phraseEdgeHSpace, \@tgtFactorYs, $sentenceData[0]->[$i]->[$k]->{'tgtText'}, $font, $black);
}
else #empty target phrase; only show source
{
writeFactoredStringGD($img, $srcStartX[$k] + $phraseEdgeHSpace, \@srcFactorYs, $sentenceData[0]->[$i]->[$k]->{'srcText'}, $font, $highlightCol);
}
}
#write image file
my $imgfilename = "$imgdir/$i.png";
open(IMAGE, ">$imgfilename") or die "couldn't create tmp image '$imgfilename': $!\n";
print IMAGE $img->png();
close(IMAGE);
}
#display HTML output
my $stylesheet = <<EOHTML;
<style type="text/css">
div.sentence {}
</style>
EOHTML
print "<html><head><title>Translation Options Used</title>$stylesheet</head><body>\n";
print "<span style=\"font-size:large\"><b>Overall Average Phrase Length:</b> " . sprintf("%.3lf", $totalPhraseLength / $totalNumPhrases) . "</span><p>\n";
for(my $i = 0; $i < scalar(@{$sentenceData[0]}); $i++)
{
if($i > 0) {print "<hr width=98%>";}
print "<div class=\"sentence\"><b>Average Phrase Length:</b> " . sprintf("%.3lf", $sentenceData[2]->[$i]) . "<p><img src=\"$imgdir/$i.png\"></div>\n";
}
print "</body></html>";
############################################################################################################################################
#2-argument
sub max
{
my ($a, $b) = @_;
return ($a > $b) ? $a : $b;
}
#N-argument
sub maxN
{
die "maxN(): empty array!\n" if scalar(@_) == 0;
my $max = shift @_;
map {$max = $_ if $_ > $max;} @_;
return $max;
}
#arguments: image, startX, arrayref of y-coords for writing, arrayref of arrayrefs of factor strings, font, color
sub writeFactoredStringGD
{
my ($img, $startX, $ys, $factors, $font, $color) = @_;
foreach my $word (@$factors)
{
for(my $i = 0; $i < scalar(@$ys); $i++)
{
$img->string($font, $startX, $ys->[$i], $word->[$i], $color);
}
$startX += $font->width * (maxN(map {length($_)} @$word) + 1);
}
}
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