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#!/usr/bin/perl -w
use strict;
use Getopt::Long "GetOptions";
binmode(STDIN, ":utf8");
binmode(STDOUT, ":utf8");
my ($SRC,$INFILE,$UNBUFFERED);
die("detruecase.perl < in > out")
unless &GetOptions('headline=s' => \$SRC,
'in=s' => \$INFILE,
'b|unbuffered' => \$UNBUFFERED);
if (defined($UNBUFFERED) && $UNBUFFERED) { $|=1; }
my %SENTENCE_END = ("."=>1,":"=>1,"?"=>1,"!"=>1);
my %DELAYED_SENTENCE_START = ("("=>1,"["=>1,"\""=>1,"'"=>1,"""=>1,"'"=>1,"["=>1,"]"=>1);
# lowercase even in headline
my %ALWAYS_LOWER;
foreach ("a","after","against","al-.+","and","any","as","at","be","because","between","by","during","el-.+","for","from","his","in","is","its","last","not","of","off","on","than","the","their","this","to","was","were","which","will","with") { $ALWAYS_LOWER{$_} = 1; }
# find out about the headlines
my @HEADLINE;
if (defined($SRC)) {
open(SRC,$SRC);
my $headline_flag = 0;
while(<SRC>) {
$headline_flag = 1 if /<hl>/;
$headline_flag = 0 if /<.hl>/;
next unless /^<seg/;
push @HEADLINE, $headline_flag;
}
close(SRC);
}
my $sentence = 0;
if ($INFILE) {
open(IN,$INFILE) || die("ERROR: could not open file '$INFILE'");
binmode(IN, ":utf8");
while(<IN>) {
&process($_,$sentence++);
}
close(IN);
}
else {
while(<STDIN>) {
&process($_,$sentence++);
}
}
sub process {
my $line = $_[0];
chomp($line);
$line =~ s/^\s+//;
$line =~ s/\s+$//;
my @WORD = split(/\s+/,$line);
# uppercase at sentence start
my $sentence_start = 1;
for(my $i=0;$i<scalar(@WORD);$i++) {
&uppercase(\$WORD[$i]) if $sentence_start;
if (defined($SENTENCE_END{ $WORD[$i] })) { $sentence_start = 1; }
elsif (!defined($DELAYED_SENTENCE_START{$WORD[$i] })) { $sentence_start = 0; }
}
# uppercase headlines {
if (defined($SRC) && $HEADLINE[$sentence]) {
foreach (@WORD) {
&uppercase(\$_) unless $ALWAYS_LOWER{$_};
}
}
# output
my $first = 1;
foreach (@WORD) {
print " " unless $first;
$first = 0;
print $_;
}
print "\n";
$sentence++;
}
sub uppercase {
my ($W) = @_;
$$W = uc(substr($$W,0,1)).substr($$W,1);
}
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