DefaultReader::createEmptyNode() - Code Metrics - Inspection of "Reader create valid XML fragments" - inspirum/xml-php - Measure and Improve Code Quality continuously with Scrutinizer

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by Tomáš

created 2023-04-23 14:49 UTC

DefaultReader::createEmptyNode() A

↳ Parent: DefaultReader

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
eloc	1
c	0
b	0
f	0
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
cc	1
nc	1
nop	4
crap	1

<?php

declare(strict_types=1);

namespace Inspirum\XML\Reader;

use Exception;
use Inspirum\XML\Builder\Document;
use Inspirum\XML\Builder\Node;
use Inspirum\XML\Exception\Handler;
use Inspirum\XML\Formatter\Formatter;
use Inspirum\XML\Parser\Parser;
use XMLReader;
use function array_map;
use function array_merge;
use function ksort;

final class DefaultReader implements Reader
{
    public function __construct(
        private readonly XMLReader $reader,
        private readonly Document $document,
    ) {
    }

    public function __destruct()
    {
        $this->reader->close();
    }

    /**
     * @inheritDoc
     */
    public function iterateNode(string $nodeName, bool $withNamespaces = false): iterable
    {
        $found = $this->moveToNode($nodeName);

        if ($found->found === false) {
            return yield from [];
        }

        do {
            yield $this->readNode($withNamespaces ? $found->namespaces : null)->node;
        } while ($this->moveToNextNode($nodeName));
    }

    public function nextNode(string $nodeName, bool $withNamespaces = false): ?Node
    {
        $found = $this->moveToNode($nodeName);

        if ($found->found === false) {
            return null;
        }

        return $this->readNode($withNamespaces ? $found->namespaces : null)->node;
    }

    /**
     * @throws \Exception
     */
    private function moveToNode(string $nodeName): MoveResult
    {
        $namespaces = [];

        while ($this->read()) {
            if ($this->isNodeElementType() && $this->getNodeName() === $nodeName) {
                return MoveResult::found($namespaces);
            }

            $namespaces = array_merge($namespaces, $this->getNodeNamespaces());
        }

        return MoveResult::notFound();
    }

    private function moveToNextNode(string $nodeName): bool
    {
        $localName = Parser::getLocalName($nodeName);

        while ($this->reader->next($localName)) {
            if ($this->getNodeName() === $nodeName) {
                return true;
            }
        }

        return false;
    }

    /**
     * @param array<string,string>|null $rootNamespaces
     *
     * @throws \Exception
     */
    private function readNode(?array $rootNamespaces = null): ReadResult
    {
        $name       = $this->getNodeName();
        $attributes = $this->getNodeAttributes();
        $namespaces = Parser::parseNamespaces($attributes);

        if ($this->isNodeEmptyElementType()) {
            return $this->createEmptyNode($name, $attributes, $namespaces, $rootNamespaces);
        }

        /** @var array<\Inspirum\XML\Reader\ReadResult> $elements */
        $elements = [];
        $text     = null;

        while ($this->read()) {
            if ($this->isNodeElementEndType() && $this->getNodeName() === $name) {
                return $this->createNode($name, $text, $attributes, $namespaces, $rootNamespaces, $elements);
            }

            if ($this->isNodeTextType()) {
                $text = $this->getNodeValue();
            } elseif ($this->isNodeElementType()) {
                $elements[] = $this->readNode();
            }
        }

        // @codeCoverageIgnoreStart
        throw new Exception('\XMLReader::read() opening and ending tag mismatch');
        // @codeCoverageIgnoreEnd
    }

    /**
     * @param array<string,string>      $attributes
     * @param array<string,string>      $namespaces
     * @param array<string,string>|null $rootNamespaces
     */
    private function createEmptyNode(string $name, array $attributes, array $namespaces, ?array $rootNamespaces): ReadResult
    {
        return $this->createNode($name, null, $attributes, $namespaces, $rootNamespaces, []);
    }

    /**
     * @param array<string,string>                   $attributes
     * @param array<string,string>                   $namespaces
     * @param array<string,string>|null              $rootNamespaces
     * @param array<\Inspirum\XML\Reader\ReadResult> $elements
     *
     * @throws \DOMException
     */
    private function createNode(string $name, mixed $text, array $attributes, array $namespaces, ?array $rootNamespaces, array $elements): ReadResult
    {
        $namespaces    = array_merge($namespaces, ...array_map(static fn(ReadResult $element) => $element->namespaces, $elements));
        $withNamespace = $rootNamespaces !== null;

        if ($withNamespace) {

            $attributes = array_merge($this->namespacesToAttributes($namespaces, $rootNamespaces), $attributes);
        }

        $node = $this->document->createTextElement($name, $text, $attributes, withNamespaces: $withNamespace);

        foreach ($elements as $element) {
            $node->append($element->node);
        }

        return ReadResult::create($node, $namespaces);
    }

    /**
     * @param array<string,string> $namespaces
     * @param array<string,string> $rootNamespaces
     *
     * @return array<string,string>
     */
    private function namespacesToAttributes(array $namespaces, array $rootNamespaces): array
    {
        $mergedNamespaces = Formatter::namespacesToAttributes(array_merge($namespaces, $rootNamespaces));
        ksort($mergedNamespaces);

        return $mergedNamespaces;
    }

    /**
     * @throws \Exception
     */
    private function read(): bool
    {
        return Handler::withErrorHandlerForXMLReader(fn(): bool => $this->reader->read());
    }

    private function getNodeName(): string
    {
        return $this->reader->name;
    }

    private function getNodeType(): int
    {
        return $this->reader->nodeType;
    }

    private function getNodeValue(): string
    {
        return $this->reader->value;
    }

    private function isNodeElementType(): bool
    {
        return $this->isNodeType(XMLReader::ELEMENT);
    }

    private function isNodeEmptyElementType(): bool
    {
        return $this->reader->isEmptyElement;
    }

    private function isNodeElementEndType(): bool
    {
        return $this->isNodeType(XMLReader::END_ELEMENT);
    }

    private function isNodeTextType(): bool
    {
        return $this->isNodeType(XMLReader::TEXT) || $this->isNodeType(XMLReader::CDATA);
    }

    private function isNodeType(int $type): bool
    {
        return $this->getNodeType() === $type;
    }

    /**
     * @return array<string,string>
     */
    private function getNodeAttributes(): array
    {
        $attributes = [];

        if ($this->reader->hasAttributes) {
            while ($this->reader->moveToNextAttribute()) {
                $attributes[$this->getNodeName()] = $this->getNodeValue();
            }

            $this->reader->moveToElement();
        }

        return $attributes;
    }

    /**
     * @return array<string,string>
     */
    private function getNodeNamespaces(): array
    {
        return Parser::parseNamespaces($this->getNodeAttributes());
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Inspirum\XML\Reader;
6
7		use Exception;
8		use Inspirum\XML\Builder\Document;
9		use Inspirum\XML\Builder\Node;
10		use Inspirum\XML\Exception\Handler;
11		use Inspirum\XML\Formatter\Formatter;
12		use Inspirum\XML\Parser\Parser;
13		use XMLReader;
14		use function array_map;
15		use function array_merge;
16		use function ksort;
17
18		final class DefaultReader implements Reader
19		{
20	16	public function __construct(
21		private readonly XMLReader $reader,
22		private readonly Document $document,
23		) {
24	16	}
25
26	16	public function __destruct()
27		{
28	16	$this->reader->close();
29		}
30
31		/**
32		* @inheritDoc
33		*/
34	8	public function iterateNode(string $nodeName, bool $withNamespaces = false): iterable
35		{
36	8	$found = $this->moveToNode($nodeName);
37
38	7	if ($found->found === false) {
39	1	return yield from [];
40		}
41
42		do {
43	6	yield $this->readNode($withNamespaces ? $found->namespaces : null)->node;
44	6	} while ($this->moveToNextNode($nodeName));
45		}
46
47	9	public function nextNode(string $nodeName, bool $withNamespaces = false): ?Node
48		{
49	9	$found = $this->moveToNode($nodeName);
50
51	8	if ($found->found === false) {
52	2	return null;
53		}
54
55	7	return $this->readNode($withNamespaces ? $found->namespaces : null)->node;
56		}
57
58		/**
59		* @throws \Exception
60		*/
61	16	private function moveToNode(string $nodeName): MoveResult
62		{
63	16	$namespaces = [];
64
65	16	while ($this->read()) {
66	14	if ($this->isNodeElementType() && $this->getNodeName() === $nodeName) {
67	12	return MoveResult::found($namespaces);
68		}
69
70	13	$namespaces = array_merge($namespaces, $this->getNodeNamespaces());
71		}
72
73	3	return MoveResult::notFound();
74		}
75
76	6	private function moveToNextNode(string $nodeName): bool
77		{
78	6	$localName = Parser::getLocalName($nodeName);
79
80	6	while ($this->reader->next($localName)) {
81	6	if ($this->getNodeName() === $nodeName) {
82	5	return true;
83		}
84		}
85
86	6	return false;
87		}
88
89		/**
90		* @param array<string,string>\|null $rootNamespaces
91		*
92		* @throws \Exception
93		*/
94	12	private function readNode(?array $rootNamespaces = null): ReadResult
95		{
96	12	$name = $this->getNodeName();
97	12	$attributes = $this->getNodeAttributes();
98	12	$namespaces = Parser::parseNamespaces($attributes);
99
100	12	if ($this->isNodeEmptyElementType()) {
101	2	return $this->createEmptyNode($name, $attributes, $namespaces, $rootNamespaces);
102		}
103
104		/** @var array<\Inspirum\XML\Reader\ReadResult> $elements */
105	11	$elements = [];
106	11	$text = null;
107
108	11	while ($this->read()) {
109	11	if ($this->isNodeElementEndType() && $this->getNodeName() === $name) {
110	11	return $this->createNode($name, $text, $attributes, $namespaces, $rootNamespaces, $elements);
111		}
112
113	10	if ($this->isNodeTextType()) {
114	10	$text = $this->getNodeValue();
115	8	} elseif ($this->isNodeElementType()) {
116	8	$elements[] = $this->readNode();
117		}
118		}
119
120		// @codeCoverageIgnoreStart
121		throw new Exception('\XMLReader::read() opening and ending tag mismatch');
122		// @codeCoverageIgnoreEnd
123		}
124
125		/**
126		* @param array<string,string> $attributes
127		* @param array<string,string> $namespaces
128		* @param array<string,string>\|null $rootNamespaces
129		*/
130	2	private function createEmptyNode(string $name, array $attributes, array $namespaces, ?array $rootNamespaces): ReadResult
131		{
132	2	return $this->createNode($name, null, $attributes, $namespaces, $rootNamespaces, []);
133		}
134
135		/**
136		* @param array<string,string> $attributes
137		* @param array<string,string> $namespaces
138		* @param array<string,string>\|null $rootNamespaces
139		* @param array<\Inspirum\XML\Reader\ReadResult> $elements
140		*
141		* @throws \DOMException
142		*/
143	12	private function createNode(string $name, mixed $text, array $attributes, array $namespaces, ?array $rootNamespaces, array $elements): ReadResult
144		{
145	12	$namespaces = array_merge($namespaces, ...array_map(static fn(ReadResult $element) => $element->namespaces, $elements));
146	12	$withNamespace = $rootNamespaces !== null;
147
148	12	if ($withNamespace) {
		1 ignored issue – show introduced 2023-04-23 15:01 UTC by Report Bug Copy Issue Report The condition `$withNamespace` is always `true`. Loading history...
149	2	$attributes = array_merge($this->namespacesToAttributes($namespaces, $rootNamespaces), $attributes);
150		}
151
152	12	$node = $this->document->createTextElement($name, $text, $attributes, withNamespaces: $withNamespace);
153
154	12	foreach ($elements as $element) {
155	8	$node->append($element->node);
156		}
157
158	12	return ReadResult::create($node, $namespaces);
159		}
160
161		/**
162		* @param array<string,string> $namespaces
163		* @param array<string,string> $rootNamespaces
164		*
165		* @return array<string,string>
166		*/
167	2	private function namespacesToAttributes(array $namespaces, array $rootNamespaces): array
168		{
169	2	$mergedNamespaces = Formatter::namespacesToAttributes(array_merge($namespaces, $rootNamespaces));
170	2	ksort($mergedNamespaces);
171
172	2	return $mergedNamespaces;
173		}
174
175		/**
176		* @throws \Exception
177		*/
178	16	private function read(): bool
179		{
180	16	return Handler::withErrorHandlerForXMLReader(fn(): bool => $this->reader->read());
181		}
182
183	14	private function getNodeName(): string
184		{
185	14	return $this->reader->name;
186		}
187
188	14	private function getNodeType(): int
189		{
190	14	return $this->reader->nodeType;
191		}
192
193	14	private function getNodeValue(): string
194		{
195	14	return $this->reader->value;
196		}
197
198	14	private function isNodeElementType(): bool
199		{
200	14	return $this->isNodeType(XMLReader::ELEMENT);
201		}
202
203	12	private function isNodeEmptyElementType(): bool
204		{
205	12	return $this->reader->isEmptyElement;
206		}
207
208	11	private function isNodeElementEndType(): bool
209		{
210	11	return $this->isNodeType(XMLReader::END_ELEMENT);
211		}
212
213	10	private function isNodeTextType(): bool
214		{
215	10	return $this->isNodeType(XMLReader::TEXT) \|\| $this->isNodeType(XMLReader::CDATA);
216		}
217
218	14	private function isNodeType(int $type): bool
219		{
220	14	return $this->getNodeType() === $type;
221		}
222
223		/**
224		* @return array<string,string>
225		*/
226	14	private function getNodeAttributes(): array
227		{
228	14	$attributes = [];
229
230	14	if ($this->reader->hasAttributes) {
231	14	while ($this->reader->moveToNextAttribute()) {
232	14	$attributes[$this->getNodeName()] = $this->getNodeValue();
233		}
234
235	14	$this->reader->moveToElement();
236		}
237
238	14	return $attributes;
239		}
240
241		/**
242		* @return array<string,string>
243		*/
244	13	private function getNodeNamespaces(): array
245		{
246	13	return Parser::parseNamespaces($this->getNodeAttributes());
247		}
248		}
249

inspirum / xml-php

Push — master ( dcddfc...dfc3a0 )

DefaultReader::createEmptyNode() A

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