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@ -1,28 +1,30 @@
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<?php
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/* Copyright 2021 Netsyms Technologies.
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Redistribution and use in source and binary forms, with or without modification, are permitted
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provided that the following conditions are met:
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Redistribution and use in source and binary forms, with or without modification, are permitted
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provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this list of conditions
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and the following disclaimer.
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1. Redistributions of source code must retain the above copyright notice, this list of conditions
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and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice, this list of
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conditions and the following disclaimer in the documentation and/or other materials provided with
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the distribution.
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2. Redistributions in binary form must reproduce the above copyright notice, this list of
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conditions and the following disclaimer in the documentation and/or other materials provided with
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the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors may be used to
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endorse or promote products derived from this software without specific prior written permission.
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3. Neither the name of the copyright holder nor the names of its contributors may be used to
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endorse or promote products derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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class FixPhrase {
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private const WORDLIST = [
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@ -7676,31 +7678,43 @@ class FixPhrase {
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return implode(" ", [self::WORDLIST[$groups[0]], self::WORDLIST[$groups[1]], self::WORDLIST[$groups[2]], self::WORDLIST[$groups[3]]]);
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}
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/**
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* Convert a phrase into coordinates.
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* @param string $words
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* @return array [latitude, longitude, accuracy (degrees), phrase]
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* @throws Exception If the phrase is not valid.
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*/
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public static function decode(string $words): array {
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$indexes = [-1, -1, -1, -1];
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$words = explode(" ", strtolower($words));
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$canonicalphrase = ["", "", "", ""];
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if (count($words) < 2) {
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throw new Exception("Not enough words!");
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} else if (count($words) > 4) {
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throw new Exception("Too many words!");
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//throw new Exception("Too many words!");
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}
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// Convert words back into indices and do the math to make them coordinate chunks
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foreach ($words as $word) {
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$index = array_search($word, self::WORDLIST);
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if ($index === false) {
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throw new Exception("Unrecognized word found!");
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//throw new Exception("Unrecognized word found!");
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}
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if ($index >= 0 && $index < 2000) {
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$indexes[0] = $index;
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$canonicalphrase[0] = self::WORDLIST[$index];
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} else if ($index >= 2000 && $index < 5610) {
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$indexes[1] = $index - 2000;
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$canonicalphrase[1] = self::WORDLIST[$index];
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} else if ($index >= 5610 && $index < 6610) {
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$indexes[2] = $index - 5610;
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$canonicalphrase[2] = self::WORDLIST[$index];
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} else if ($index >= 6610 && $index < 7610) {
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$indexes[3] = $index - 6610;
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$canonicalphrase[3] = self::WORDLIST[$index];
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}
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}
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@ -7748,7 +7762,7 @@ class FixPhrase {
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break;
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}
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return [round($latitude, 4), round($longitude, 4), $accuracy];
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return [round($latitude, 4), round($longitude, 4), $accuracy, trim(implode(" ", $canonicalphrase))];
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}
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}
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