Initial xentral_oss_20.3.c9ffacf

2021-05-21 08:49:41 +02:00
parent 5406e4a551
commit 34e5ac43d9
18884 changed files with 2109867 additions and 0 deletions
@@ -0,0 +1,81 @@
+<?php
+
+namespace Xentral\Modules\SuperSearch\SearchEngine;
+
+use Xentral\Components\Util\StringUtil;
+
+final class SearchTermParser
+{
+    /**
+     * @internal Operators in Boolean search mode: +, -, > <, ( ), ~, *, ", @distance
+     *
+     * @param string $searchTerm
+     *
+     * @return string
+     */
+    public function parse($searchTerm)
+    {
+        // Remove unused (not supported by us) search operators: *, > <, ( ), @distance
+        $searchTerm = preg_replace('/[><()*@]+/', '', $searchTerm);
+
+        $searchWords = preg_split('/([\s]+)/um', $searchTerm, -1, PREG_SPLIT_NO_EMPTY);
+        if ($searchWords === false) {
+            return '';
+        }
+
+        foreach ($searchWords as &$searchWord) {
+
+            if (strlen($searchWord) < 3) {
+                $searchWord = '';
+                continue;
+            }
+
+            $hasLeadingTilde = StringUtil::startsWith($searchWord, '~');
+            $searchWord = ltrim($searchWord, '~');
+
+            $hasLeadingMinus = StringUtil::startsWith($searchWord, '-');
+            $searchWord = trim($searchWord, '-'); // Trim both sides; InnoDB only supports leading minus signs
+
+            $hasLeadingPlus = StringUtil::startsWith($searchWord, '+');
+            $searchWord = trim($searchWord, '+'); // Trim both sides; InnoDB only supports leading plus signs
+
+            $hasLeadingQuote = StringUtil::startsWith($searchWord, '"');
+            $hasTrailingQuote = StringUtil::endsWith($searchWord, '"');
+            $searchWord = trim($searchWord, '"');
+
+            // Operatoren innerhalb eines Suchworts entfernen
+            $searchWord = preg_replace('/[+\-~\"]+/', '', $searchWord);
+
+            $searchWord = trim($searchWord);
+            if (strlen($searchWord) < 3) {
+                $searchWord = ''; // Zu kurze Suchwörter ignorieren
+                continue;
+            }
+
+            // Beispiel: `"foobar"`
+            // Kombination mit Operatoren möglich: `+"foobar"` oder `-"foobar"` oder `~"foobar"`
+            if ($hasLeadingQuote && $hasTrailingQuote) {
+                $searchWord = '"' . $searchWord . '"';
+            }
+
+            // Operatoren vorne anfügen
+            if ($hasLeadingTilde) {
+                $searchWord = '~' . $searchWord;
+            }
+            if ($hasLeadingMinus) {
+                $searchWord = '-' . $searchWord;
+            }
+            if ($hasLeadingPlus) {
+                $searchWord = '+' . $searchWord;
+            }
+
+            // Default: Wildcard hinten, nur wenn keine Anführungszeichen
+            if (!$hasLeadingQuote && !$hasTrailingQuote) {
+                $searchWord .= '*';
+            }
+        }
+        unset($searchWord);
+
+        return trim(implode(' ', $searchWords));
+    }
+}