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#!/usr/bin/env perl
use strict;
while(<STDIN>) {
if (/^\(\(\)\)/) {
print "\n"; # parse failures
next;
}
# prep
s/^\( \( (.+) \)$/\(TOP $1/; # remove double wrapped parenthesis
s/^\( /\(TOP /;
# escape words
s/\&/\&/g; # escape escape
s/\|/\&bar;/g; # factor separator
s/\</\</g; # xml
s/\>/\>/g; # xml
s/\'/\'/g; # xml
s/\"/\"/g; # xml
s/\[/\[/g; # syntax non-terminal
s/\]/\]/g; # syntax non-terminal
# escape parentheses that were part of the input text
s/(\(\S+ )\(\)/$1\&openingparenthesis;\)/g;
s/(\(\S+ )\)\)/$1\&closingparenthesis;\)/g;
# convert into tree
s/\((\S+) /<tree label=\"$1\"> /g;
s/\)/ <\/tree> /g;
s/\"\-LRB\-\"/\"LRB\"/g; # labels
s/\"\-RRB\-\"/\"RRB\"/g;
s/\-LRB\-/\(/g; # tokens
s/\-RRB\-/\)/g;
s/ +/ /g;
s/ $//g;
# de-escape parentheses that were part of the input text
s/\&openingparenthesis;/\(/g;
s/\&closingparenthesis;/\)/g;
# output, replace words with original
print $_;
}
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