22262381750

Committed 25 Jan 2026 11:44PM UTC coverage: 92.367% (-0.7%) from 93.057%

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95.8

/src/Texy/Modules/HtmlOutputModule.php

<?php

/**
 * This file is part of the Texy! (https://texy.nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Texy\Modules;

use Texy;
use Texy\HtmlElement;
use Texy\Regexp;
use function array_intersect, array_keys, array_unshift, max, reset, rtrim, str_repeat, str_replace, strtr, wordwrap;


/**
 * HTML output
 */
final class HtmlOutputModule extends Texy\Module
{
        /** indent HTML code? */
        public bool $indent = true;

        /** @var string[] */
        public array $preserveSpaces = ['textarea', 'pre', 'script', 'code', 'samp', 'kbd'];

        /** base indent level */
        public int $baseIndent = 0;

        /** wrap width, doesn't include indent space */
        public int $lineWrap = 80;

        /** indent space counter */
        private int $space = 0;

        /** @var array<string, int> */
        private array $tagUsed = [];

        /** @var array<int, array{tag: string, open: string, close: string, dtdContent: array<string, int>, indent: int}> */
        private array $tagStack = [];

        /** @var array<string, int>  content DTD used, when context is not defined */
        private array $baseDTD = [];


        public function __construct(Texy\Texy $texy)
        {
                $this->texy = $texy;
                $texy->addHandler('postProcess', $this->postProcess(...));
        }


        /**
         * Converts <strong><em> ... </strong> ... </em>.
         * into <strong><em> ... </em></strong><em> ... </em>
         */
        private function postProcess(Texy\Texy $texy, string &$s): void
        {
                $this->space = $this->baseIndent;
                $this->tagStack = [];
                $this->tagUsed = [];

                // special "base content"
                $dtd = $texy->getDTD();
                $this->baseDTD = $dtd['div'][1] + $dtd['html'][1] /*+ $dtd['head'][1]*/ + $dtd['body'][1] + ['html' => 1];

                // wellform and reformat
                $s = Regexp::replace(
                        $s . '</end/>',
                        '#([^<]*+)<(?:(!--.*--)|(/?)([a-z][a-z0-9._:-]*)(|[ \n].*)\s*(/?))>()#Uis',
                        $this->cb(...),
                );

                // empty out stack
                foreach ($this->tagStack as $item) {
                        $s .= $item['close'];
                }

                // right trim
                $s = Regexp::replace($s, "#[\t ]+(\n|\r|$)#", '$1'); // right trim

                // join double \r to single \n
                $s = str_replace("\r\r", "\n", $s);
                $s = strtr($s, "\r", "\n");

                // greedy chars
                $s = Regexp::replace($s, '#\x07 *#', '');
                // back-tabs
                $s = Regexp::replace($s, '#\t? *\x08#', '');

                // line wrap
                if ($this->lineWrap > 0) {
                        $s = Regexp::replace(
                                $s,
                                '#^(\t*)(.*)$#m',
                                $this->wrap(...),
                        );
                }
        }


        /**
         * Callback function: <tag> | </tag> | ....
         */
        private function cb(array $matches): string
        {
                // html tag
                [, $mText, $mComment, $mEnd, $mTag, $mAttr, $mEmpty] = $matches;
                // [1] => text
                // [1] => !-- comment --
                // [2] => /
                // [3] => TAG
                // [4] => ... (attributes)
                // [5] => / (empty)

                $s = '';

                // phase #1 - stuff between tags
                if ($mText !== '') {
                        $item = reset($this->tagStack);
                        if ($item && !isset($item['dtdContent'][HtmlElement::InnerText])) {  // text not allowed?

                        } elseif (array_intersect(array_keys($this->tagUsed, filter_value: true, strict: false), $this->preserveSpaces)) { // inside pre & textarea preserve spaces
                                $s = Texy\Helpers::freezeSpaces($mText);

                        } else {
                                $s = Regexp::replace($mText, '#[ \n]+#', ' '); // otherwise shrink multiple spaces
                        }
                }

                // phase #2 - HTML comment
                if ($mComment) {
                        return $s . '<' . Texy\Helpers::freezeSpaces($mComment) . '>';
                }

                // phase #3 - HTML tag
                $mEmpty = $mEmpty || isset(HtmlElement::$emptyElements[$mTag]);
                if ($mEmpty && $mEnd) { // bad tag; /end/
                        return $s;
                } elseif ($mEnd) {
                        return $s . $this->processEndTag($mTag);
                } else {
                        return $this->processStartTag($mTag, $mEmpty, $mAttr, $s);
                }
        }


        private function processStartTag(string $tag, bool $empty, string $attr, string $s): string
        {
                $dtdContent = $this->baseDTD;
                $dtd = $this->texy->getDTD();

                if (!isset($dtd[$tag])) {
                        // unknown (non-html) tag
                        $allowed = true;
                        $item = reset($this->tagStack);
                        if ($item) {
                                $dtdContent = $item['dtdContent'];
                        }
                } else {
                        $s .= $this->closeOptionalTags($tag, $dtdContent);

                        // is tag allowed in this content?
                        $allowed = isset($dtdContent[$tag]);

                        // check deep element prohibitions
                        if ($allowed && isset(HtmlElement::$prohibits[$tag])) {
                                foreach (HtmlElement::$prohibits[$tag] as $pTag) {
                                        if (!empty($this->tagUsed[$pTag])) {
                                                $allowed = false;
                                                break;
                                        }
                                }
                        }
                }

                // empty elements se neukladaji do zasobniku
                if ($empty) {
                        if (!$allowed) {
                                return $s;
                        }

                        $indent = $this->indent && !array_intersect(array_keys($this->tagUsed, filter_value: true, strict: false), $this->preserveSpaces);

                        if ($indent && $tag === 'br') { // formatting exception
                                return rtrim($s) . '<' . $tag . $attr . ">\n" . str_repeat("\t", max(0, $this->space - 1)) . "\x07";

                        } elseif ($indent && !isset(HtmlElement::$inlineElements[$tag])) {
                                $space = "\r" . str_repeat("\t", $this->space);
                                return $s . $space . '<' . $tag . $attr . '>' . $space;

                        } else {
                                return $s . '<' . $tag . $attr . '>';
                        }
                }

                $open = null;
                $close = null;
                $indent = 0;

                if ($allowed) {
                        $open = '<' . $tag . $attr . '>';

                        // receive new content
                        if ($tagDTD = $dtd[$tag] ?? null) {
                                if (isset($tagDTD[1][HtmlElement::InnerTransparent])) {
                                        $dtdContent += $tagDTD[1];
                                        unset($dtdContent[HtmlElement::InnerTransparent]);
                                } else {
                                        $dtdContent = $tagDTD[1];
                                }
                        }

                        // format output
                        if ($this->indent && !isset(HtmlElement::$inlineElements[$tag])) {
                                $close = "\x08" . '</' . $tag . '>' . "\n" . str_repeat("\t", $this->space);
                                $s .= "\n" . str_repeat("\t", $this->space++) . $open . "\x07";
                                $indent = 1;
                        } else {
                                $close = '</' . $tag . '>';
                                $s .= $open;
                        }

                        // TODO: problematic formatting of select / options, object / params
                }

                // open tag, put to stack, increase counter
                $item = [
                        'tag' => $tag,
                        'open' => $open,
                        'close' => $close,
                        'dtdContent' => $dtdContent,
                        'indent' => $indent,
                ];
                array_unshift($this->tagStack, $item);
                $tmp = &$this->tagUsed[$tag];
                $tmp++;

                return $s;
        }


        private function processEndTag(string $tag): string
        {
                // has start tag?
                if (empty($this->tagUsed[$tag])) {
                        return '';
                }

                // autoclose tags
                $tmp = [];
                $back = true;
                $s = '';
                foreach ($this->tagStack as $i => $item) {
                        $itemTag = $item['tag'];
                        $s .= $item['close'];
                        $this->space -= $item['indent'];
                        $this->tagUsed[$itemTag]--;
                        $back = $back && isset(HtmlElement::$inlineElements[$itemTag]);
                        unset($this->tagStack[$i]);
                        if ($itemTag === $tag) {
                                break;
                        }

                        array_unshift($tmp, $item);
                }

                if (!$back || !$tmp) {
                        return $s;
                }

                // allowed-check (nejspis neni ani potreba)
                $item = reset($this->tagStack);
                $dtdContent = $item ? $item['dtdContent'] : $this->baseDTD;
                if (!isset($dtdContent[$tmp[0]['tag']])) {
                        return $s;
                }

                // autoopen tags
                foreach ($tmp as $item) {
                        $s .= $item['open'];
                        $this->space += $item['indent'];
                        $this->tagUsed[$item['tag']]++;
                        array_unshift($this->tagStack, $item);
                }

                return $s;
        }


        private function closeOptionalTags(string $tag, array &$dtdContent): string
        {
                $s = '';
                foreach ($this->tagStack as $i => $item) {
                        // is tag allowed here?
                        $dtdContent = $item['dtdContent'];
                        if (isset($dtdContent[$tag])) {
                                break;
                        }

                        $itemTag = $item['tag'];

                        // auto-close hidden, optional and inline tags
                        if (
                                $item['close']
                                && (
                                        !isset(HtmlElement::$optionalEnds[$itemTag])
                                        && !isset(HtmlElement::$inlineElements[$itemTag])
                                )
                        ) {
                                break;
                        }

                        // close it
                        $s .= $item['close'];
                        $this->space -= $item['indent'];
                        $this->tagUsed[$itemTag]--;
                        unset($this->tagStack[$i]);
                        $dtdContent = $this->baseDTD;
                }

                return $s;
        }


        /**
         * Callback function: wrap lines.
         */
        private function wrap(array $m): string
        {
                [, $space, $s] = $m;
                return $space . wordwrap($s, $this->lineWrap, "\n" . $space);
        }
}

1	<?php
2
3	/**
4	* This file is part of the Texy! (https://texy.nette.org)
5	* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
6	*/
7
8	declare(strict_types=1);
9
10	namespace Texy\Modules;
11
12	use Texy;
13	use Texy\HtmlElement;
14	use Texy\Regexp;
15	use function array_intersect, array_keys, array_unshift, max, reset, rtrim, str_repeat, str_replace, strtr, wordwrap;
16
17
18	/**
19	* HTML output
20	*/
21	final class HtmlOutputModule extends Texy\Module
22	{
23	/** indent HTML code? */
24	public bool $indent = true;
25
26	/** @var string[] */
27	public array $preserveSpaces = ['textarea', 'pre', 'script', 'code', 'samp', 'kbd'];
28
29	/** base indent level */
30	public int $baseIndent = 0;
31
32	/** wrap width, doesn't include indent space */
33	public int $lineWrap = 80;
34
35	/** indent space counter */
36	private int $space = 0;
37
38	/** @var array<string, int> */
39	private array $tagUsed = [];
40
41	/** @var array<int, array{tag: string, open: string, close: string, dtdContent: array<string, int>, indent: int}> */
42	private array $tagStack = [];
43
44	/** @var array<string, int> content DTD used, when context is not defined */
45	private array $baseDTD = [];
46
47
48	public function __construct(Texy\Texy $texy)	1✔
49	{
50	$this->texy = $texy;	1✔
51	$texy->addHandler('postProcess', $this->postProcess(...));	1✔
52	}	1✔
53
54
55	/**
56	* Converts <strong><em> ... </strong> ... </em>.
57	* into <strong><em> ... </em></strong><em> ... </em>
58	*/
59	private function postProcess(Texy\Texy $texy, string &$s): void	1✔
60	{
61	$this->space = $this->baseIndent;	1✔
62	$this->tagStack = [];	1✔
63	$this->tagUsed = [];	1✔
64
65	// special "base content"
66	$dtd = $texy->getDTD();	1✔
67	$this->baseDTD = $dtd['div'][1] + $dtd['html'][1] /+ $dtd['head'][1]/ + $dtd['body'][1] + ['html' => 1];	1✔
68
69	// wellform and reformat
70	$s = Regexp::replace(	1✔
71	$s . '</end/>',	1✔
72	'#([^<]+)<(?:(!--.--)\|(/?)([a-z][a-z0-9._:-])(\|[ \n].)\s*(/?))>()#Uis',	1✔
73	$this->cb(...),	1✔
74	);
75
76	// empty out stack
77	foreach ($this->tagStack as $item) {	1✔
78	$s .= $item['close'];	1✔
79	}
80
81	// right trim
82	$s = Regexp::replace($s, "#[\t ]+(\n\|\r\|$)#", '$1'); // right trim	1✔
83
84	// join double \r to single \n
85	$s = str_replace("\r\r", "\n", $s);	1✔
86	$s = strtr($s, "\r", "\n");	1✔
87
88	// greedy chars
89	$s = Regexp::replace($s, '#\x07 *#', '');	1✔
90	// back-tabs
91	$s = Regexp::replace($s, '#\t? *\x08#', '');	1✔
92
93	// line wrap
94	if ($this->lineWrap > 0) {	1✔
95	$s = Regexp::replace(	1✔
96	$s,	1✔
97	'#^(\t)(.)$#m',	1✔
98	$this->wrap(...),	1✔
99	);
100	}
101	}	1✔
102
103
104	/**
105	* Callback function: <tag> \| </tag> \| ....
106	*/
107	private function cb(array $matches): string	1✔
108	{
109	// html tag
110	[, $mText, $mComment, $mEnd, $mTag, $mAttr, $mEmpty] = $matches;	1✔
111	// [1] => text
112	// [1] => !-- comment --
113	// [2] => /
114	// [3] => TAG
115	// [4] => ... (attributes)
116	// [5] => / (empty)
117
118	$s = '';	1✔
119
120	// phase #1 - stuff between tags
121	if ($mText !== '') {	1✔
122	$item = reset($this->tagStack);	1✔
123	if ($item && !isset($item['dtdContent'][HtmlElement::InnerText])) { // text not allowed?	1✔
124
125	} elseif (array_intersect(array_keys($this->tagUsed, filter_value: true, strict: false), $this->preserveSpaces)) { // inside pre & textarea preserve spaces	1✔
126	$s = Texy\Helpers::freezeSpaces($mText);	1✔
127
128	} else {
129	$s = Regexp::replace($mText, '#[ \n]+#', ' '); // otherwise shrink multiple spaces	1✔
130	}
131	}
132
133	// phase #2 - HTML comment
134	if ($mComment) {	1✔
135	return $s . '<' . Texy\Helpers::freezeSpaces($mComment) . '>';	1✔
136	}
137
138	// phase #3 - HTML tag
139	$mEmpty = $mEmpty \|\| isset(HtmlElement::$emptyElements[$mTag]);	1✔
140	if ($mEmpty && $mEnd) { // bad tag; /end/	1✔
141	return $s;	1✔
142	} elseif ($mEnd) {	1✔
143	return $s . $this->processEndTag($mTag);	1✔
144	} else {
145	return $this->processStartTag($mTag, $mEmpty, $mAttr, $s);	1✔
146	}
147	}
148
149
150	private function processStartTag(string $tag, bool $empty, string $attr, string $s): string	1✔
151	{
152	$dtdContent = $this->baseDTD;	1✔
153	$dtd = $this->texy->getDTD();	1✔
154
155	if (!isset($dtd[$tag])) {	1✔
156	// unknown (non-html) tag
UNCOV 157	$allowed = true;	×
UNCOV 158	$item = reset($this->tagStack);	×
UNCOV 159	if ($item) {	×
UNCOV 160	$dtdContent = $item['dtdContent'];	×
161	}
162	} else {
163	$s .= $this->closeOptionalTags($tag, $dtdContent);	1✔
164
165	// is tag allowed in this content?
166	$allowed = isset($dtdContent[$tag]);	1✔
167
168	// check deep element prohibitions
169	if ($allowed && isset(HtmlElement::$prohibits[$tag])) {	1✔
170	foreach (HtmlElement::$prohibits[$tag] as $pTag) {	1✔
171	if (!empty($this->tagUsed[$pTag])) {	1✔
172	$allowed = false;	1✔
173	break;	1✔
174	}
175	}
176	}
177	}
178
179	// empty elements se neukladaji do zasobniku
180	if ($empty) {	1✔
181	if (!$allowed) {	1✔
UNCOV 182	return $s;	×
183	}
184
185	$indent = $this->indent && !array_intersect(array_keys($this->tagUsed, filter_value: true, strict: false), $this->preserveSpaces);	1✔
186
187	if ($indent && $tag === 'br') { // formatting exception	1✔
188	return rtrim($s) . '<' . $tag . $attr . ">\n" . str_repeat("\t", max(0, $this->space - 1)) . "\x07";	1✔
189
190	} elseif ($indent && !isset(HtmlElement::$inlineElements[$tag])) {	1✔
191	$space = "\r" . str_repeat("\t", $this->space);	1✔
192	return $s . $space . '<' . $tag . $attr . '>' . $space;	1✔
193
194	} else {
195	return $s . '<' . $tag . $attr . '>';	1✔
196	}
197	}
198
199	$open = null;	1✔
200	$close = null;	1✔
201	$indent = 0;	1✔
202
203	if ($allowed) {	1✔
204	$open = '<' . $tag . $attr . '>';	1✔
205
206	// receive new content
207	if ($tagDTD = $dtd[$tag] ?? null) {	1✔
208	if (isset($tagDTD[1][HtmlElement::InnerTransparent])) {	1✔
209	$dtdContent += $tagDTD[1];	1✔
210	unset($dtdContent[HtmlElement::InnerTransparent]);	1✔
211	} else {
212	$dtdContent = $tagDTD[1];	1✔
213	}
214	}
215
216	// format output
217	if ($this->indent && !isset(HtmlElement::$inlineElements[$tag])) {	1✔
218	$close = "\x08" . '</' . $tag . '>' . "\n" . str_repeat("\t", $this->space);	1✔
219	$s .= "\n" . str_repeat("\t", $this->space++) . $open . "\x07";	1✔
220	$indent = 1;	1✔
221	} else {
222	$close = '</' . $tag . '>';	1✔
223	$s .= $open;	1✔
224	}
225
226	// TODO: problematic formatting of select / options, object / params
227	}
228
229	// open tag, put to stack, increase counter
230	$item = [	1✔
231	'tag' => $tag,	1✔
232	'open' => $open,	1✔
233	'close' => $close,	1✔
234	'dtdContent' => $dtdContent,	1✔
235	'indent' => $indent,	1✔
236	];
237	array_unshift($this->tagStack, $item);	1✔
238	$tmp = &$this->tagUsed[$tag];	1✔
239	$tmp++;	1✔
240
241	return $s;	1✔
242	}
243
244
245	private function processEndTag(string $tag): string	1✔
246	{
247	// has start tag?
248	if (empty($this->tagUsed[$tag])) {	1✔
249	return '';	1✔
250	}
251
252	// autoclose tags
253	$tmp = [];	1✔
254	$back = true;	1✔
255	$s = '';	1✔
256	foreach ($this->tagStack as $i => $item) {	1✔
257	$itemTag = $item['tag'];	1✔
258	$s .= $item['close'];	1✔
259	$this->space -= $item['indent'];	1✔
260	$this->tagUsed[$itemTag]--;	1✔
261	$back = $back && isset(HtmlElement::$inlineElements[$itemTag]);	1✔
262	unset($this->tagStack[$i]);	1✔
263	if ($itemTag === $tag) {	1✔
264	break;	1✔
265	}
266
267	array_unshift($tmp, $item);	1✔
268	}
269
270	if (!$back \|\| !$tmp) {	1✔
271	return $s;	1✔
272	}
273
274	// allowed-check (nejspis neni ani potreba)
275	$item = reset($this->tagStack);	1✔
276	$dtdContent = $item ? $item['dtdContent'] : $this->baseDTD;	1✔
277	if (!isset($dtdContent[$tmp[0]['tag']])) {	1✔
UNCOV 278	return $s;	×
279	}
280
281	// autoopen tags
282	foreach ($tmp as $item) {	1✔
283	$s .= $item['open'];	1✔
284	$this->space += $item['indent'];	1✔
285	$this->tagUsed[$item['tag']]++;	1✔
286	array_unshift($this->tagStack, $item);	1✔
287	}
288
289	return $s;	1✔
290	}
291
292
293	private function closeOptionalTags(string $tag, array &$dtdContent): string	1✔
294	{
295	$s = '';	1✔
296	foreach ($this->tagStack as $i => $item) {	1✔
297	// is tag allowed here?
298	$dtdContent = $item['dtdContent'];	1✔
299	if (isset($dtdContent[$tag])) {	1✔
300	break;	1✔
301	}
302
303	$itemTag = $item['tag'];	1✔
304
305	// auto-close hidden, optional and inline tags
306	if (
307	$item['close']	1✔
308	&& (
309	!isset(HtmlElement::$optionalEnds[$itemTag])	1✔
310	&& !isset(HtmlElement::$inlineElements[$itemTag])	1✔
311	)
312	) {
313	break;	1✔
314	}
315
316	// close it
317	$s .= $item['close'];	1✔
318	$this->space -= $item['indent'];	1✔
319	$this->tagUsed[$itemTag]--;	1✔
320	unset($this->tagStack[$i]);	1✔
321	$dtdContent = $this->baseDTD;	1✔
322	}
323
324	return $s;	1✔
325	}
326
327
328	/**
329	* Callback function: wrap lines.
330	*/
331	private function wrap(array $m): string	1✔
332	{
333	[, $space, $s] = $m;	1✔
334	return $space . wordwrap($s, $this->lineWrap, "\n" . $space);	1✔
335	}
336	}

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