XmlImportStringReader.php — WP All Import – Drag & Drop Import for CSV, XML, Excel & Google Sheets 4.1.1

wp-all-import / libraries / XmlImportStringReader.php

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XmlImportStringReader.php

68 lines

1	<?php
2	// phpcs:disable WordPress.NamingConventions.PrefixAllGlobals
3	/**
4	* @author Olexandr Zanichkovsky <olexandr.zanichkovsky@zophiatech.com>
5	* @package General
6	*/
7
8	require_once dirname(__FILE__) . '/XmlImportReaderInterface.php';
9
10	/**
11	* Allows to either peek or read a character from a string buffer
12	*/
13	class XmlImportStringReader implements XmlImportReaderInterface
14	{
15	/**
16	* String buffer
17	*
18	* @var string
19	*/
20	private $buffer;
21
22	/**
23	* Current index
24	*
25	* @var int
26	*/
27	private $index = -1;
28
29	/**
30	* Creates new instance
31	*
32	* @param string $input
33	*/
34	public function __construct($input)
35	{
36	if (is_string($input))
37	$this->buffer = $input;
38	else
39	throw new InvalidArgumentException(esc_html("String expected as argument."));
40	}
41
42	/**
43	* Returns the next symbol from the buffer without changes to current index
44	* or false if buffer ends
45	*
46	* @return string
47	*/
48	public function peek()
49	{
50	if ($this->index + 1 >= strlen($this->buffer))
51	return false;
52	else
53	return $this->buffer[$this->index + 1];
54	}
55
56	/**
57	* Returns the next symbol from the buffer or false if buffer is ended
58	*
59	* @return string
60	*/
61	public function read()
62	{
63	$result = $this->peek();
64	if ($this->index < strlen($this->buffer))
65	$this->index++;
66	return $result;
67	}
68	}