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|
#!/usr/bin/env perl
use warnings;
use strict;
use Getopt::Long "GetOptions";
use FindBin qw($RealBin);
my $___FACTOR_DELIMITER = "|";
# utilities
my $ZCAT = "gzip -cd";
my $BZCAT = "bzcat";
my ($CORPUS,$REDUCED,$FACTOR,$_XML);
die("ERROR: wrong syntax when invoking reduce-factors")
unless &GetOptions('corpus=s' => \$CORPUS,
'reduced-corpus=s' => \$REDUCED,
'factor=s' => \$FACTOR,
'xml' => \$_XML);
&reduce_factors($CORPUS,$REDUCED,$FACTOR);
# from train-model.perl
sub reduce_factors {
my ($full,$reduced,$factors) = @_;
my @INCLUDE = sort {$a <=> $b} split(/,/,$factors);
print STDERR "(1.0.5) reducing factors to produce $reduced @ ".`date`;
while(-e $reduced.".lock") {
sleep(10);
}
if (-e $reduced) {
print STDERR " $reduced in place, reusing\n";
return;
}
if (-e $reduced.".gz") {
print STDERR " $reduced.gz in place, reusing\n";
return;
}
unless ($_XML) {
# peek at input, to check if we are asked to produce exactly the
# available factors
my $inh = open_or_zcat($full);
my $firstline = <$inh>;
die "Corpus file $full is empty" unless $firstline;
close $inh;
# pick first word
$firstline =~ s/^\s*//;
$firstline =~ s/\s.*//;
# count factors
my @WORD = split(/ /,$firstline);
my @FACTOR = split(/$___FACTOR_DELIMITER/,$WORD[0]);
my $maxfactorindex = scalar(@FACTOR)-1;
if (join(",", @INCLUDE) eq join(",", 0..$maxfactorindex)) {
# create just symlink; preserving compression
my $realfull = $full;
if (!-e $realfull && -e $realfull.".gz") {
$realfull .= ".gz";
$reduced =~ s/(\.gz)?$/.gz/;
}
safesystem("ln -s '$realfull' '$reduced'")
or die "Failed to create symlink $realfull -> $reduced";
return;
}
}
# The default is to select the needed factors
`touch $reduced.lock`;
*IN = open_or_zcat($full);
open(OUT,">".$reduced) or die "ERROR: Can't write $reduced";
my $nr = 0;
while(<IN>) {
$nr++;
print STDERR "." if $nr % 10000 == 0;
print STDERR "($nr)" if $nr % 100000 == 0;
s/<\S[^>]*>/ /g if $_XML; # remove xml
chomp; s/ +/ /g; s/^ //; s/ $//;
my $first = 1;
foreach (split) {
my @FACTOR = split /\Q$___FACTOR_DELIMITER/;
# \Q causes to disable metacharacters in regex
print OUT " " unless $first;
$first = 0;
my $first_factor = 1;
foreach my $outfactor (@INCLUDE) {
print OUT $___FACTOR_DELIMITER unless $first_factor;
$first_factor = 0;
my $out = $FACTOR[$outfactor];
die "ERROR: Couldn't find factor $outfactor in token \"$_\" in $full LINE $nr" if !defined $out;
print OUT $out;
}
# for(my $factor=0;$factor<=$#FACTOR;$factor++) {
# next unless defined($INCLUDE{$factor});
# print OUT "|" unless $first_factor;
# $first_factor = 0;
# print OUT $FACTOR[$factor];
# }
}
print OUT "\n";
}
print STDERR "\n";
close(OUT);
close(IN);
`rm -f $reduced.lock`;
}
sub open_or_zcat {
my $fn = shift;
my $read = $fn;
$fn = $fn.".gz" if ! -e $fn && -e $fn.".gz";
$fn = $fn.".bz2" if ! -e $fn && -e $fn.".bz2";
if ($fn =~ /\.bz2$/) {
$read = "$BZCAT $fn|";
} elsif ($fn =~ /\.gz$/) {
$read = "$ZCAT $fn|";
}
my $hdl;
open($hdl,$read) or die "Can't read $fn ($read)";
return $hdl;
}
sub safesystem {
print STDERR "Executing: @_\n";
system(@_);
if ($? == -1) {
print STDERR "ERROR: Failed to execute: @_\n $!\n";
exit(1);
}
elsif ($? & 127) {
printf STDERR "ERROR: Execution of: @_\n died with signal %d, %s coredump\n",
($? & 127), ($? & 128) ? 'with' : 'without';
exit(1);
}
else {
my $exitcode = $? >> 8;
print STDERR "Exit code: $exitcode\n" if $exitcode;
return ! $exitcode;
}
}
|
