22262497275

Committed 21 Feb 2026 07:01PM UTC coverage: 93.057% (+0.7%) from 92.367%

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added CLAUDE.md

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/src/Texy/Modules/HeadingModule.php

<?php declare(strict_types=1);

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

namespace Texy\Modules;

use Texy;
use Texy\Modifier;
use function array_flip, array_values, asort, count, is_array, max, min, reset, rtrim, strlen, trim;


/**
 * Processes heading syntax (underlined and surrounded) and builds table of contents.
 */
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 list<array{el: Texy\HtmlElement, level: int, type: string, title?: 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) {
                                $style = $item['el']->attrs['style'] ?? null;
                                if (is_array($style) && !empty($style['toc'])) {
                                        $title = (string) $style['toc'];
                                        unset($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}>
         * -------------------------------
         * @param  string[]  $matches
         */
        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}>
         * @param  string[]  $matches
         */
        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 declare(strict_types=1);
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	namespace Texy\Modules;
9
10	use Texy;
11	use Texy\Modifier;
12	use function array_flip, array_values, asort, count, is_array, max, min, reset, rtrim, strlen, trim;
13
14
15	/**
16	* Processes heading syntax (underlined and surrounded) and builds table of contents.
17	*/
18	final class HeadingModule extends Texy\Module
19	{
20	public const
21	DYNAMIC = 1, // auto-leveling
22	FIXED = 2; // fixed-leveling
23
24	/** textual content of first heading */
25	public ?string $title = null;
26
27	/** @var list<array{el: Texy\HtmlElement, level: int, type: string, title?: string}> generated Table of Contents */
28	public array $TOC = [];
29
30	public bool $generateID = false;
31
32	/** prefix for autogenerated ID */
33	public string $idPrefix = 'toc-';
34
35	/** level of top heading, 1..6 */
36	public int $top = 1;
37
38	/** surrounded headings: more #### means higher heading */
39	public bool $moreMeansHigher = true;
40
41	/** balancing mode */
42	public int $balancing = self::DYNAMIC;
43
44	/** @var array<string, int> when $balancing = HeadingModule::FIXED */
45	public array $levels = [
46	'#' => 0, // # --> $levels['#'] + $top = 0 + 1 = 1 --> <h1> ... </h1>
47	'*' => 1,
48	'=' => 2,
49	'-' => 3,
50	];
51
52	/** @var array<string, true> used ID's */
53	private array $usedID = [];
54
55
56	public function __construct(Texy\Texy $texy)	1✔
57	{
58	$this->texy = $texy;	1✔
59
60	$texy->addHandler('heading', $this->solve(...));	1✔
61	$texy->addHandler('beforeParse', $this->beforeParse(...));	1✔
62	$texy->addHandler('afterParse', $this->afterParse(...));	1✔
63
64	$texy->registerBlockPattern(	1✔
65	$this->patternUnderline(...),	1✔
66	'#^(\S.{0,1000})' . Texy\Patterns::MODIFIER_H . '?\n'
67	. '(\#{3,}+\|\*{3,}+\|={3,}+\|-{3,}+)$#mU',	1✔
68	'heading/underlined',	1✔
69	);
70
71	$texy->registerBlockPattern(	1✔
72	$this->patternSurround(...),	1✔
73	'#^(\#{2,}+\|={2,}+)(.+)' . Texy\Patterns::MODIFIER_H . '?()$#mU',	1✔
74	'heading/surrounded',	1✔
75	);
76	}	1✔
77
78
79	private function beforeParse(): void
80	{
81	$this->title = null;	1✔
82	$this->usedID = [];	1✔
83	$this->TOC = [];	1✔
84	}	1✔
85
86
87	private function afterParse(Texy\Texy $texy, Texy\HtmlElement $DOM, bool $isSingleLine): void	1✔
88	{
89	if ($isSingleLine) {	1✔
90	return;	×
91	}
92
93	if ($this->balancing === self::DYNAMIC) {	1✔
94	$top = $this->top;	1✔
95	$map = [];	1✔
96	$min = 100;	1✔
97	foreach ($this->TOC as $item) {	1✔
98	$level = $item['level'];	1✔
99	if ($item['type'] === 'surrounded') {	1✔
100	$min = min($level, $min);	1✔
101	$top = $this->top - $min;	1✔
102
103	} elseif ($item['type'] === 'underlined') {	1✔
104	$map[$level] = $level;	1✔
105	}
106	}
107
108	asort($map);	1✔
109	$map = array_flip(array_values($map));	1✔
110	}
111
112	foreach ($this->TOC as $key => $item) {	1✔
113	if ($this->balancing === self::DYNAMIC) {	1✔
114	if ($item['type'] === 'surrounded') {	1✔
115	$level = $item['level'] + $top;	1✔
116
117	} elseif ($item['type'] === 'underlined') {	1✔
118	$level = $map[$item['level']] + $this->top;	1✔
119
120	} else {
121	$level = $item['level'];	1✔
122	}
123
124	$item['el']->setName('h' . min(6, max(1, $level)));	1✔
125	$this->TOC[$key]['level'] = $level;	1✔
126	}
127
128	if ($this->generateID) {	1✔
129	$style = $item['el']->attrs['style'] ?? null;	1✔
130	if (is_array($style) && !empty($style['toc'])) {	1✔
131	$title = (string) $style['toc'];	1✔
132	unset($item['el']->attrs['style']['toc']);	1✔
133	} else {
134	$title = trim($item['el']->toText($this->texy));	1✔
135	}
136
137	$this->TOC[$key]['title'] = $title;	1✔
138	if (empty($item['el']->attrs['id'])) {	1✔
139	$id = $this->idPrefix . Texy\Helpers::webalize($title);	1✔
140	$counter = '';	1✔
141	if (isset($this->usedID[$id . $counter])) {	1✔
142	$counter = 2;	1✔
143	while (isset($this->usedID[$id . '-' . $counter])) {	1✔
144	$counter++;	1✔
145	}
146
147	$id .= '-' . $counter;	1✔
148	}
149
150	$this->usedID[$id] = true;	1✔
151	$item['el']->attrs['id'] = $id;	1✔
152	}
153	}
154	}
155
156	// document title
157	if ($this->title === null && count($this->TOC)) {	1✔
158	$item = reset($this->TOC);	1✔
159	$this->title = $item['title'] ?? trim($item['el']->toText($this->texy));	1✔
160	}
161	}	1✔
162
163
164	/**
165	* Callback for underlined heading.
166	*
167	* Heading .(title)[class]{style}>
168	* -------------------------------
169	* @param string[] $matches
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	* @param string[] $matches
190	*/
191	public function patternSurround(Texy\BlockParser $parser, array $matches): Texy\HtmlElement\|string\|null	1✔
192	{
193	[, $mLine, $mContent, $mMod] = $matches;	1✔
194	// [1] => ###
195	// [2] => ...
196	// [3] => .(title)[class]{style}<>
197
198	$mod = new Modifier($mMod);	1✔
199	$level = min(7, max(2, strlen($mLine)));	1✔
200	$level = $this->moreMeansHigher ? 7 - $level : $level - 2;	1✔
201	$mContent = rtrim($mContent, $mLine[0] . ' ');	1✔
202	return $this->texy->invokeAroundHandlers('heading', $parser, [$level, $mContent, $mod, true]);	1✔
203	}
204
205
206	/**
207	* Finish invocation.
208	*/
209	private function solve(	1✔
210	Texy\HandlerInvocation $invocation,
211	int $level,
212	string $content,
213	Modifier $mod,
214	bool $isSurrounded,
215	): Texy\HtmlElement
216	{
217	// as fixed balancing, for block/texysource & correct decorating
218	$el = new Texy\HtmlElement('h' . min(6, max(1, $level + $this->top)));	1✔
219	$mod->decorate($this->texy, $el);	1✔
220
221	$el->parseLine($this->texy, trim($content));	1✔
222
223	$this->TOC[] = [	1✔
224	'el' => $el,	1✔
225	'level' => $level,	1✔
226	'type' => $isSurrounded ? 'surrounded' : 'underlined',	1✔
227	];
228
229	return $el;	1✔
230	}
231	}

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