first version

2019-01-13 23:17:34 +01:00
commit 01277f79f2
595 changed files with 82913 additions and 0 deletions
--- a/kirby/src/Cms/Search.php
+++ b/kirby/src/Cms/Search.php
@@ -0,0 +1,111 @@
+<?php
+
+namespace Kirby\Cms;
+
+use Kirby\Toolkit\Str;
+
+/**
+ * The Search class extracts the
+ * search logic from collections, to
+ * provide a more globally usable interface
+ * for any searches.
+ */
+class Search
+{
+    public static function files(string $query = null, $params = [])
+    {
+        return App::instance()->site()->index()->files()->search($query, $params);
+    }
+
+    /**
+     * Native search method to search for anything within the collection
+     */
+    public static function collection(Collection $collection, string $query = null, $params = [])
+    {
+        if (empty(trim($query)) === true) {
+            return $collection->limit(0);
+        }
+
+        if (is_string($params) === true) {
+            $params = ['fields' => Str::split($params, '|')];
+        }
+
+        $defaults = [
+            'fields'    => [],
+            'minlength' => 2,
+            'score'     => [],
+            'words'     => false,
+        ];
+
+        $options     = array_merge($defaults, $params);
+        $collection  = clone $collection;
+        $searchwords = preg_replace('/(\s)/u', ',', $query);
+        $searchwords = Str::split($searchwords, ',', $options['minlength']);
+        $lowerQuery  = strtolower($query);
+
+        if (empty($options['stopwords']) === false) {
+            $searchwords = array_diff($searchwords, $options['stopwords']);
+        }
+
+        $searchwords = array_map(function ($value) use ($options) {
+            return $options['words'] ? '\b' . preg_quote($value) . '\b' : preg_quote($value);
+        }, $searchwords);
+
+        $preg    = '!(' . implode('|', $searchwords) . ')!i';
+        $results = $collection->filter(function ($item) use ($query, $preg, $options, $lowerQuery) {
+            $data = $item->content()->toArray();
+            $keys = array_keys($data);
+            $keys[] = 'id';
+
+            if (empty($options['fields']) === false) {
+                $keys = array_intersect($keys, $options['fields']);
+            }
+
+            $item->searchHits  = 0;
+            $item->searchScore = 0;
+
+            foreach ($keys as $key) {
+                $score = $options['score'][$key] ?? 1;
+                $value = $key === 'id' ? $item->id() : $data[$key];
+
+                $lowerValue = strtolower($value);
+
+                // check for exact matches
+                if ($lowerQuery == $lowerValue) {
+                    $item->searchScore += 16 * $score;
+                    $item->searchHits  += 1;
+
+                // check for exact beginning matches
+                } elseif (Str::startsWith($lowerValue, $lowerQuery) === true) {
+                    $item->searchScore += 8 * $score;
+                    $item->searchHits  += 1;
+
+                // check for exact query matches
+                } elseif ($matches = preg_match_all('!' . preg_quote($query) . '!i', $value, $r)) {
+                    $item->searchScore += 2 * $score;
+                    $item->searchHits  += $matches;
+                }
+
+                // check for any match
+                if ($matches = preg_match_all($preg, $value, $r)) {
+                    $item->searchHits  += $matches;
+                    $item->searchScore += $matches * $score;
+                }
+            }
+
+            return $item->searchHits > 0 ? true : false;
+        });
+
+        return $results->sortBy('searchScore', 'desc');
+    }
+
+    public static function pages(string $query = null, $params = [])
+    {
+        return App::instance()->site()->index()->search($query, $params);
+    }
+
+    public static function users(string $query = null, $params = [])
+    {
+        return App::instance()->users()->search($query, $params);
+    }
+}