From ff425f488d12d4ecf41a81c65784d32224404aec Mon Sep 17 00:00:00 2001
From: Yigit Sever
Date: Mon, 16 Sep 2019 22:06:29 +0300
Subject: Add dictionary creating script

---
 train_dic_creator.pl | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100755 train_dic_creator.pl

(limited to 'train_dic_creator.pl')

diff --git a/train_dic_creator.pl b/train_dic_creator.pl
new file mode 100755
index 0000000..a8de6ea
--- /dev/null
+++ b/train_dic_creator.pl
@@ -0,0 +1,118 @@
+#!/usr/bin/env perl
+#
+#
+#Copyright © 2019 Yiğit Sever <yigit.sever@tedu.edu.tr>
+
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+# OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# Get source language code and target language code
+# optionally give cutoff, cutoff/2 pairs will be prepared for train/test
+# optionally give a different dictionary directory name
+#
+# USAGE:
+# $ perl train_dic_creator.pl <source_lang> <target_lang> (cutoff) (dictionary_dir)
+
+use strict;
+use warnings;
+use List::Util qw(shuffle);
+
+my ($source_lang, $target_lang, $cutoff, $dict_dir) = @ARGV;
+
+if (not defined $source_lang or not defined $target_lang) {
+    die "usage: ./train_dic_creator.pl <source_lang> <target_lang> (cutoff)";
+}
+
+if (not defined $cutoff && $cutoff ne '') {
+    $cutoff = 20000;
+}
+
+if (not defined $dict_dir && $dict_dir ne '') {
+    $dict_dir = './dictionaries/';
+}
+
+my $flipped = 0;
+my $file_name;
+
+if (-e "$dict_dir/$target_lang-$source_lang.dic") {
+    warn "Dictionary is formatted as $target_lang $source_lang, still creating $source_lang $target_lang";
+    $file_name = "$target_lang-$source_lang.dic";
+    $flipped = 1;
+} elsif (-e "$dict_dir/$source_lang-$target_lang.dic") {
+    $file_name = "$source_lang-$target_lang.dic";
+}
+
+my $file_path = $dict_dir . $file_name;
+
+local @ARGV = $file_path;
+local $^I = '.bak';
+
+while (<>) { # remove empty lines
+    print if ! /^$/;
+}
+
+my @lines = `sort -rn $file_path`; # better translations swim to top
+
+my @result;
+my $c = 0;
+
+foreach my $line (@lines) {
+    chomp($line);
+    if ($line !~ m/^\d+\s+[0-9.]+\s+(\S+)\s+(\S+)\s+[0-9.]+\s+[0-9.]+$/) {
+        # line has multiple tokens
+        next;
+    } else {
+        my ($source, $target) = $line =~ m/^\d+\s+[0-9.]+\s+(\S+)\s+(\S+)\s+[0-9.]+\s+[0-9.]+$/;
+
+        if ($flipped) { # The file name and given parameters mismatch, correcting
+            push @result, "$target $source";
+        } else {
+            push @result, "$source $target";
+        }
+        $c++;
+
+        if ($c >= $cutoff) {
+            last;
+        }
+    }
+}
+
+my $test = scalar @result;
+
+if ($cutoff > scalar @result) {
+    $cutoff = scalar @result;
+}
+
+@result = shuffle @result;
+
+my $size = $cutoff / 2;
+
+my @head = @result[0..$size - 1];
+my @tail = @result[-$size..-1];
+
+my $train_file_name = $source_lang . '_' . $target_lang . '.train';
+my $test_file_name = $source_lang . '_' . $target_lang . '.test';
+
+open my $train_fh, '>', $train_file_name;
+open my $test_fh, '>', $test_file_name;
+
+print $train_fh join("\n", @head);
+print $test_fh join("\n", @tail);
+
+unlink "$file_path$^I";
-- 
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