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1<?php
2/**
3 * Pop PHP Framework (http://www.popphp.org/)
4 *
5 * @link       https://github.com/popphp/popphp-framework
6 * @author     Nick Sagona, III <dev@nolainteractive.com>
7 * @copyright  Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com)
8 * @license    http://www.popphp.org/license     New BSD License
9 */
10
11/**
12 * @namespace
13 */
14namespace Pop\Dom;
15
16/**
17 * Dom class
18 *
19 * @category   Pop
20 * @package    Pop\Dom
21 * @author     Nick Sagona, III <dev@nolainteractive.com>
22 * @copyright  Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com)
23 * @license    http://www.popphp.org/license     New BSD License
24 * @version    4.0.0
25 */
26class Document extends AbstractNode
27{
28
29    /**
30     * Constant to use the XML doctype
31     * @var string
32     */
33    const XML = 'XML';
34
35    /**
36     * Constant to use the HTML doctype
37     * @var string
38     */
39    const HTML = 'HTML';
40
41    /**
42     * Constant to use the XML doctype, RSS content-type
43     * @var string
44     */
45    const RSS = 'RSS';
46
47    /**
48     * Constant to use the XML doctype, Atom content-type
49     * @var string
50     */
51    const ATOM = 'ATOM';
52
53    /**
54     * Document type
55     * @var string
56     */
57    protected string $doctype = 'XML';
58
59    /**
60     * Document content type
61     * @var string
62     */
63    protected string $contentType = 'application/xml';
64
65    /**
66     * Document charset
67     * @var string
68     */
69    protected string $charset = 'utf-8';
70
71    /**
72     * Document doctypes
73     * @var array
74     */
75    protected static array $doctypes = [
76        'XML'  => "<?xml version=\"1.0\" encoding=\"[{charset}]\"?>\n",
77        'HTML' =>"<!DOCTYPE html>\n"
78    ];
79
80    /**
81     * Constructor
82     *
83     * Instantiate the document object
84     *
85     * @param  string  $doctype
86     * @param  ?Child  $childNode
87     * @param  ?string $indent
88     * @throws Exception
89     */
90    public function __construct(string $doctype = 'XML', ?Child $childNode = null, ?string $indent = null)
91    {
92        $this->setDoctype($doctype);
93
94        if ($childNode !== null) {
95            $this->addChild($childNode);
96        }
97        if ($indent !== null) {
98            $this->setIndent($indent);
99        }
100    }
101
102    /**
103     * Return the document type.
104     *
105     * @return string
106     */
107    public function getDoctype(): string
108    {
109        return str_replace('[{charset}]', $this->charset, Document::$doctypes[$this->doctype]);
110    }
111
112    /**
113     * Return the document charset
114     *
115     * @return string
116     */
117    public function getCharset(): string
118    {
119        return $this->charset;
120    }
121
122    /**
123     * Return the document charset
124     *
125     * @return string
126     */
127    public function getContentType(): string
128    {
129        return $this->contentType;
130    }
131
132    /**
133     * Set the document type
134     *
135     * @param  string $doctype
136     * @throws Exception
137     * @return Document
138     */
139    public function setDoctype(string $doctype): Document
140    {
141        $doctype = strtoupper($doctype);
142
143        if (($doctype != self::XML) && ($doctype != self::HTML) && ($doctype != self::RSS) && ($doctype != self::ATOM)) {
144            throw new Exception('Error: Incorrect document type');
145        }
146
147        switch ($doctype) {
148            case 'XML':
149                $this->doctype     = self::XML;
150                $this->contentType = 'application/xml';
151                break;
152            case 'HTML':
153                $this->doctype     = self::HTML;
154                $this->contentType = 'text/html';
155                break;
156            case 'RSS':
157                $this->doctype     = self::XML;
158                $this->contentType = 'application/rss+xml';
159                break;
160            case 'ATOM':
161                $this->doctype     = self::XML;
162                $this->contentType = 'application/atom+xml';
163                break;
164        }
165
166        return $this;
167    }
168
169    /**
170     * Set the document charset
171     *
172     * @param  string $char
173     * @return Document
174     */
175    public function setCharset(string $char): Document
176    {
177        $this->charset = $char;
178        return $this;
179    }
180
181    /**
182     * Set the document charset
183     *
184     * @param  string $content
185     * @return Document
186     */
187    public function setContentType(string $content): Document
188    {
189        $this->contentType = $content;
190        return $this;
191    }
192
193    /**
194     * Render the document and its child elements
195     *
196     * @return string
197     */
198    public function render(): string
199    {
200        $this->output = null;
201
202        if ($this->doctype !== null) {
203            $this->output .= str_replace('[{charset}]', $this->charset, Document::$doctypes[$this->doctype]);
204        }
205
206        foreach ($this->childNodes as $child) {
207            $this->output .= $child->render(0, $this->indent);
208        }
209
210        return $this->output;
211    }
212
213    /**
214     * Render Dom object to string
215     *
216     * @return string
217     */
218    public function __toString(): string
219    {
220        return $this->render();
221    }
222
223}