22262381750

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

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94.05

/src/Texy/Modules/HeadingModule.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\Modifier;
use function array_flip, array_values, asort, count, is_array, max, min, reset, rtrim, strlen, trim;


/**
 * Heading module.
 */
final class HeadingModule extends Texy\Module
{
        public const
                DYNAMIC = 1, // auto-leveling
                FIXED = 2; // fixed-leveling

        /** textual content of first heading */
        public ?string $title = null;

        /** @var array<int, array{el: Texy\HtmlElement, level: int, type: string}>  generated Table of Contents */
        public array $TOC = [];

        public bool $generateID = false;

        /** prefix for autogenerated ID */
        public string $idPrefix = 'toc-';

        /** level of top heading, 1..6 */
        public int $top = 1;

        /** surrounded headings: more #### means higher heading */
        public bool $moreMeansHigher = true;

        /** balancing mode */
        public int $balancing = self::DYNAMIC;

        /** @var array<string, int>  when $balancing = HeadingModule::FIXED */
        public array $levels = [
                '#' => 0, // # --> $levels['#'] + $top = 0 + 1 = 1 --> <h1> ... </h1>
                '*' => 1,
                '=' => 2,
                '-' => 3,
        ];

        /** @var array<string, true>  used ID's */
        private array $usedID = [];


        public function __construct(Texy\Texy $texy)
        {
                $this->texy = $texy;

                $texy->addHandler('heading', $this->solve(...));
                $texy->addHandler('beforeParse', $this->beforeParse(...));
                $texy->addHandler('afterParse', $this->afterParse(...));

                $texy->registerBlockPattern(
                        $this->patternUnderline(...),
                        '#^(\S.{0,1000})' . Texy\Patterns::MODIFIER_H . '?\n'
                        . '(\#{3,}+|\*{3,}+|={3,}+|-{3,}+)$#mU',
                        'heading/underlined',
                );

                $texy->registerBlockPattern(
                        $this->patternSurround(...),
                        '#^(\#{2,}+|={2,}+)(.+)' . Texy\Patterns::MODIFIER_H . '?()$#mU',
                        'heading/surrounded',
                );
        }


        private function beforeParse(): void
        {
                $this->title = null;
                $this->usedID = [];
                $this->TOC = [];
        }


        private function afterParse(Texy\Texy $texy, Texy\HtmlElement $DOM, bool $isSingleLine): void
        {
                if ($isSingleLine) {
                        return;
                }

                if ($this->balancing === self::DYNAMIC) {
                        $top = $this->top;
                        $map = [];
                        $min = 100;
                        foreach ($this->TOC as $item) {
                                $level = $item['level'];
                                if ($item['type'] === 'surrounded') {
                                        $min = min($level, $min);
                                        $top = $this->top - $min;

                                } elseif ($item['type'] === 'underlined') {
                                        $map[$level] = $level;
                                }
                        }

                        asort($map);
                        $map = array_flip(array_values($map));
                }

                foreach ($this->TOC as $key => $item) {
                        if ($this->balancing === self::DYNAMIC) {
                                if ($item['type'] === 'surrounded') {
                                        $level = $item['level'] + $top;

                                } elseif ($item['type'] === 'underlined') {
                                        $level = $map[$item['level']] + $this->top;

                                } else {
                                        $level = $item['level'];
                                }

                                $item['el']->setName('h' . min(6, max(1, $level)));
                                $this->TOC[$key]['level'] = $level;
                        }

                        if ($this->generateID) {
                                if (!empty($item['el']->attrs['style']['toc']) && is_array($item['el']->attrs['style'])) {
                                        $title = $item['el']->attrs['style']['toc'];
                                        unset($item['el']->attrs['style']['toc']);
                                } else {
                                        $title = trim($item['el']->toText($this->texy));
                                }

                                $this->TOC[$key]['title'] = $title;
                                if (empty($item['el']->attrs['id'])) {
                                        $id = $this->idPrefix . Texy\Helpers::webalize($title);
                                        $counter = '';
                                        if (isset($this->usedID[$id . $counter])) {
                                                $counter = 2;
                                                while (isset($this->usedID[$id . '-' . $counter])) {
                                                        $counter++;
                                                }

                                                $id .= '-' . $counter;
                                        }

                                        $this->usedID[$id] = true;
                                        $item['el']->attrs['id'] = $id;
                                }
                        }
                }

                // document title
                if ($this->title === null && count($this->TOC)) {
                        $item = reset($this->TOC);
                        $this->title = $item['title'] ?? trim($item['el']->toText($this->texy));
                }
        }


        /**
         * Callback for underlined heading.
         *
         * Heading .(title)[class]{style}>
         * -------------------------------
         */
        public function patternUnderline(Texy\BlockParser $parser, array $matches): Texy\HtmlElement|string|null
        {
                [, $mContent, $mMod, $mLine] = $matches;
                // $matches:
                // [1] => ...
                // [2] => .(title)[class]{style}<>
                // [3] => ...

                $mod = new Modifier($mMod);
                $level = $this->levels[$mLine[0]];
                return $this->texy->invokeAroundHandlers('heading', $parser, [$level, $mContent, $mod, false]);
        }


        /**
         * Callback for surrounded heading.
         *
         * ### Heading .(title)[class]{style}>
         */
        public function patternSurround(Texy\BlockParser $parser, array $matches): Texy\HtmlElement|string|null
        {
                [, $mLine, $mContent, $mMod] = $matches;
                // [1] => ###
                // [2] => ...
                // [3] => .(title)[class]{style}<>

                $mod = new Modifier($mMod);
                $level = min(7, max(2, strlen($mLine)));
                $level = $this->moreMeansHigher ? 7 - $level : $level - 2;
                $mContent = rtrim($mContent, $mLine[0] . ' ');
                return $this->texy->invokeAroundHandlers('heading', $parser, [$level, $mContent, $mod, true]);
        }


        /**
         * Finish invocation.
         */
        private function solve(
                Texy\HandlerInvocation $invocation,
                int $level,
                string $content,
                Modifier $mod,
                bool $isSurrounded,
        ): Texy\HtmlElement
        {
                // as fixed balancing, for block/texysource & correct decorating
                $el = new Texy\HtmlElement('h' . min(6, max(1, $level + $this->top)));
                $mod->decorate($this->texy, $el);

                $el->parseLine($this->texy, trim($content));

                $this->TOC[] = [
                        'el' => $el,
                        'level' => $level,
                        'type' => $isSurrounded ? 'surrounded' : 'underlined',
                ];

                return $el;
        }
}

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\Modifier;
14	use function array_flip, array_values, asort, count, is_array, max, min, reset, rtrim, strlen, trim;
15
16
17	/**
18	* Heading module.
19	*/
20	final class HeadingModule extends Texy\Module
21	{
22	public const
23	DYNAMIC = 1, // auto-leveling
24	FIXED = 2; // fixed-leveling
25
26	/** textual content of first heading */
27	public ?string $title = null;
28
29	/** @var array<int, array{el: Texy\HtmlElement, level: int, type: string}> generated Table of Contents */
30	public array $TOC = [];
31
32	public bool $generateID = false;
33
34	/** prefix for autogenerated ID */
35	public string $idPrefix = 'toc-';
36
37	/** level of top heading, 1..6 */
38	public int $top = 1;
39
40	/** surrounded headings: more #### means higher heading */
41	public bool $moreMeansHigher = true;
42
43	/** balancing mode */
44	public int $balancing = self::DYNAMIC;
45
46	/** @var array<string, int> when $balancing = HeadingModule::FIXED */
47	public array $levels = [
48	'#' => 0, // # --> $levels['#'] + $top = 0 + 1 = 1 --> <h1> ... </h1>
49	'*' => 1,
50	'=' => 2,
51	'-' => 3,
52	];
53
54	/** @var array<string, true> used ID's */
55	private array $usedID = [];
56
57
58	public function __construct(Texy\Texy $texy)	1✔
59	{
60	$this->texy = $texy;	1✔
61
62	$texy->addHandler('heading', $this->solve(...));	1✔
63	$texy->addHandler('beforeParse', $this->beforeParse(...));	1✔
64	$texy->addHandler('afterParse', $this->afterParse(...));	1✔
65
66	$texy->registerBlockPattern(	1✔
67	$this->patternUnderline(...),	1✔
68	'#^(\S.{0,1000})' . Texy\Patterns::MODIFIER_H . '?\n'
69	. '(\#{3,}+\|\*{3,}+\|={3,}+\|-{3,}+)$#mU',	1✔
70	'heading/underlined',	1✔
71	);
72
73	$texy->registerBlockPattern(	1✔
74	$this->patternSurround(...),	1✔
75	'#^(\#{2,}+\|={2,}+)(.+)' . Texy\Patterns::MODIFIER_H . '?()$#mU',	1✔
76	'heading/surrounded',	1✔
77	);
78	}	1✔
79
80
81	private function beforeParse(): void
82	{
83	$this->title = null;	1✔
84	$this->usedID = [];	1✔
85	$this->TOC = [];	1✔
86	}	1✔
87
88
89	private function afterParse(Texy\Texy $texy, Texy\HtmlElement $DOM, bool $isSingleLine): void	1✔
90	{
91	if ($isSingleLine) {	1✔
92	return;	×
93	}
94
95	if ($this->balancing === self::DYNAMIC) {	1✔
96	$top = $this->top;	1✔
97	$map = [];	1✔
98	$min = 100;	1✔
99	foreach ($this->TOC as $item) {	1✔
100	$level = $item['level'];	1✔
101	if ($item['type'] === 'surrounded') {	1✔
102	$min = min($level, $min);	1✔
103	$top = $this->top - $min;	1✔
104
105	} elseif ($item['type'] === 'underlined') {	1✔
106	$map[$level] = $level;	1✔
107	}
108	}
109
110	asort($map);	1✔
111	$map = array_flip(array_values($map));	1✔
112	}
113
114	foreach ($this->TOC as $key => $item) {	1✔
115	if ($this->balancing === self::DYNAMIC) {	1✔
116	if ($item['type'] === 'surrounded') {	1✔
117	$level = $item['level'] + $top;	1✔
118
119	} elseif ($item['type'] === 'underlined') {	1✔
120	$level = $map[$item['level']] + $this->top;	1✔
121
122	} else {
123	$level = $item['level'];	1✔
124	}
125
126	$item['el']->setName('h' . min(6, max(1, $level)));	1✔
127	$this->TOC[$key]['level'] = $level;	1✔
128	}
129
130	if ($this->generateID) {	1✔
131	if (!empty($item['el']->attrs['style']['toc']) && is_array($item['el']->attrs['style'])) {	1✔
132	$title = $item['el']->attrs['style']['toc'];	1✔
133	unset($item['el']->attrs['style']['toc']);	1✔
134	} else {
135	$title = trim($item['el']->toText($this->texy));	1✔
136	}
137
138	$this->TOC[$key]['title'] = $title;	1✔
139	if (empty($item['el']->attrs['id'])) {	1✔
140	$id = $this->idPrefix . Texy\Helpers::webalize($title);	1✔
141	$counter = '';	1✔
142	if (isset($this->usedID[$id . $counter])) {	1✔
UNCOV 143	$counter = 2;	×
UNCOV 144	while (isset($this->usedID[$id . '-' . $counter])) {	×
UNCOV 145	$counter++;	×
146	}
147
UNCOV 148	$id .= '-' . $counter;	×
149	}
150
151	$this->usedID[$id] = true;	1✔
152	$item['el']->attrs['id'] = $id;	1✔
153	}
154	}
155	}
156
157	// document title
158	if ($this->title === null && count($this->TOC)) {	1✔
159	$item = reset($this->TOC);	1✔
160	$this->title = $item['title'] ?? trim($item['el']->toText($this->texy));	1✔
161	}
162	}	1✔
163
164
165	/**
166	* Callback for underlined heading.
167	*
168	* Heading .(title)[class]{style}>
169	* -------------------------------
170	*/
171	public function patternUnderline(Texy\BlockParser $parser, array $matches): Texy\HtmlElement\|string\|null	1✔
172	{
173	[, $mContent, $mMod, $mLine] = $matches;	1✔
174	// $matches:
175	// [1] => ...
176	// [2] => .(title)[class]{style}<>
177	// [3] => ...
178
179	$mod = new Modifier($mMod);	1✔
180	$level = $this->levels[$mLine[0]];	1✔
181	return $this->texy->invokeAroundHandlers('heading', $parser, [$level, $mContent, $mod, false]);	1✔
182	}
183
184
185	/**
186	* Callback for surrounded heading.
187	*
188	* ### Heading .(title)[class]{style}>
189	*/
190	public function patternSurround(Texy\BlockParser $parser, array $matches): Texy\HtmlElement\|string\|null	1✔
191	{
192	[, $mLine, $mContent, $mMod] = $matches;	1✔
193	// [1] => ###
194	// [2] => ...
195	// [3] => .(title)[class]{style}<>
196
197	$mod = new Modifier($mMod);	1✔
198	$level = min(7, max(2, strlen($mLine)));	1✔
199	$level = $this->moreMeansHigher ? 7 - $level : $level - 2;	1✔
200	$mContent = rtrim($mContent, $mLine[0] . ' ');	1✔
201	return $this->texy->invokeAroundHandlers('heading', $parser, [$level, $mContent, $mod, true]);	1✔
202	}
203
204
205	/**
206	* Finish invocation.
207	*/
208	private function solve(	1✔
209	Texy\HandlerInvocation $invocation,
210	int $level,
211	string $content,
212	Modifier $mod,
213	bool $isSurrounded,
214	): Texy\HtmlElement
215	{
216	// as fixed balancing, for block/texysource & correct decorating
217	$el = new Texy\HtmlElement('h' . min(6, max(1, $level + $this->top)));	1✔
218	$mod->decorate($this->texy, $el);	1✔
219
220	$el->parseLine($this->texy, trim($content));	1✔
221
222	$this->TOC[] = [	1✔
223	'el' => $el,	1✔
224	'level' => $level,	1✔
225	'type' => $isSurrounded ? 'surrounded' : 'underlined',	1✔
226	];
227
228	return $el;	1✔
229	}
230	}

dg / texy / 22262381750

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