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system/ThirdParty/Kint/Parser/ArrayLimitPlugin.php

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+<?php
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013 Jonathan Vollebregt (jnvsor@gmail.com), Rokas Šleinius (raveren@gmail.com)
+ *
+ * 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.
+ */
+
+namespace Kint\Parser;
+
+use InvalidArgumentException;
+use Kint\Utils;
+use Kint\Zval\Value;
+
+class ArrayLimitPlugin extends Plugin
+{
+    /**
+     * Maximum size of arrays before limiting.
+     *
+     * @var int
+     */
+    public static $trigger = 1000;
+
+    /**
+     * Maximum amount of items to show in a limited array.
+     *
+     * @var int
+     */
+    public static $limit = 50;
+
+    /**
+     * Don't limit arrays with string keys.
+     *
+     * @var bool
+     */
+    public static $numeric_only = true;
+
+    public function getTypes()
+    {
+        return ['array'];
+    }
+
+    public function getTriggers()
+    {
+        return Parser::TRIGGER_BEGIN;
+    }
+
+    public function parse(&$var, Value &$o, $trigger)
+    {
+        if (self::$limit >= self::$trigger) {
+            throw new InvalidArgumentException('ArrayLimitPlugin::$limit can not be lower than ArrayLimitPlugin::$trigger');
+        }
+
+        $depth = $this->parser->getDepthLimit();
+
+        if (!$depth) {
+            return;
+        }
+
+        if ($o->depth >= $depth - 1) {
+            return;
+        }
+
+        if (\count($var) < self::$trigger) {
+            return;
+        }
+
+        if (self::$numeric_only && Utils::isAssoc($var)) {
+            return;
+        }
+
+        $base = clone $o;
+        $base->depth = $depth - 1;
+        $obj = $this->parser->parse($var, $base);
+
+        if (!$obj instanceof Value || 'array' != $obj->type) {
+            return; // @codeCoverageIgnore
+        }
+
+        $obj->depth = $o->depth;
+        $i = 0;
+
+        foreach ($obj->value->contents as $child) {
+            // We only bother setting the correct depth for the first child,
+            // any deeper children should be cancelled by the depth limit
+            $child->depth = $o->depth + 1;
+            $this->recalcDepthLimit($child);
+        }
+
+        $var2 = \array_slice($var, 0, self::$limit, true);
+        $base = clone $o;
+        $slice = $this->parser->parse($var2, $base);
+
+        \array_splice($obj->value->contents, 0, self::$limit, $slice->value->contents);
+
+        $o = $obj;
+
+        $this->parser->haltParse();
+    }
+
+    protected function recalcDepthLimit(Value $o)
+    {
+        $hintkey = \array_search('depth_limit', $o->hints, true);
+        if (false !== $hintkey) {
+            $o->hints[$hintkey] = 'array_limit';
+        }
+
+        $reps = $o->getRepresentations();
+        if ($o->value) {
+            $reps[] = $o->value;
+        }
+
+        foreach ($reps as $rep) {
+            if ($rep->contents instanceof Value) {
+                $this->recalcDepthLimit($rep->contents);
+            } elseif (\is_array($rep->contents)) {
+                foreach ($rep->contents as $child) {
+                    if ($child instanceof Value) {
+                        $this->recalcDepthLimit($child);
+                    }
+                }
+            }
+        }
+    }
+}