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lib/PdfParser/Element/ElementArray.php

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+<?php
+
+/**
+ * @file
+ *          This file is part of the PdfParser library.
+ *
+ * @author  Sébastien MALOT <sebastien@malot.fr>
+ * @date    2017-01-03
+ * @license LGPLv3
+ * @url     <https://github.com/smalot/pdfparser>
+ *
+ *  PdfParser is a pdf library written in PHP, extraction oriented.
+ *  Copyright (C) 2017 - Sébastien MALOT <sebastien@malot.fr>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program.
+ *  If not, see <http://www.pdfparser.org/sites/default/LICENSE.txt>.
+ *
+ */
+
+namespace Smalot\PdfParser\Element;
+
+use Smalot\PdfParser\Element;
+use Smalot\PdfParser\Document;
+use Smalot\PdfParser\Header;
+use Smalot\PdfParser\Object;
+
+/**
+ * Class ElementArray
+ *
+ * @package Smalot\PdfParser\Element
+ */
+class ElementArray extends Element
+{
+    /**
+     * @param string   $value
+     * @param Document $document
+     */
+    public function __construct($value, Document $document = null)
+    {
+        parent::__construct($value, $document);
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getContent()
+    {
+        foreach ($this->value as $name => $element) {
+            $this->resolveXRef($name);
+        }
+
+        return parent::getContent();
+    }
+
+    /**
+     * @return array
+     */
+    public function getRawContent()
+    {
+        return $this->value;
+    }
+
+    /**
+     * @param bool $deep
+     *
+     * @return array
+     */
+    public function getDetails($deep = true)
+    {
+        $values   = array();
+        $elements = $this->getContent();
+
+        foreach ($elements as $key => $element) {
+            if ($element instanceof Header && $deep) {
+                $values[$key] = $element->getDetails($deep);
+            } elseif ($element instanceof Object && $deep) {
+                $values[$key] = $element->getDetails(false);
+            } elseif ($element instanceof ElementArray) {
+                if ($deep) {
+                    $values[$key] = $element->getDetails();
+                }
+            } elseif ($element instanceof Element && !($element instanceof ElementArray)) {
+                $values[$key] = $element->getContent();
+            }
+        }
+
+        return $values;
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return implode(',', $this->value);
+    }
+
+    /**
+     * @param string $name
+     *
+     * @return Element|Object
+     */
+    protected function resolveXRef($name)
+    {
+        if (($obj = $this->value[$name]) instanceof ElementXRef) {
+            /** @var Object $obj */
+            $obj                = $this->document->getObjectById($obj->getId());
+            $this->value[$name] = $obj;
+        }
+
+        return $this->value[$name];
+    }
+
+    /**
+     * @param string   $content
+     * @param Document $document
+     * @param int      $offset
+     *
+     * @return bool|ElementArray
+     */
+    public static function parse($content, Document $document = null, &$offset = 0)
+    {
+        if (preg_match('/^\s*\[(?P<array>.*)/is', $content, $match)) {
+            preg_match_all('/(.*?)(\[|\])/s', trim($content), $matches);
+
+            $level = 0;
+            $sub   = '';
+            foreach ($matches[0] as $part) {
+                $sub .= $part;
+                $level += (strpos($part, '[') !== false ? 1 : -1);
+                if ($level <= 0) {
+                    break;
+                }
+            }
+
+            // Removes 1 level [ and ].
+            $sub        = substr(trim($sub), 1, -1);
+            $sub_offset = 0;
+            $values     = Element::parse($sub, $document, $sub_offset, true);
+
+            $offset += strpos($content, '[') + 1;
+            // Find next ']' position
+            $offset += strlen($sub) + 1;
+
+            return new self($values, $document);
+        }
+
+        return false;
+    }
+}