XMLReader::isNodeEmptyElementType() - Code Metrics - Inspection of "Refactor code" - inspirum/xml-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (f25cb1)

by Tomáš

created 2020-11-25 07:51 UTC

XMLReader::isNodeEmptyElementType() A

↳ Parent: XMLReader

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

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

<?php

namespace Inspirum\XML\Services;

use Exception;
use XMLReader as BaseXMLReader;

class XMLReader
{
    /**
     * XML Reader
     *
     * @var \XMLReader
     */
    private $reader;

    /**
     * XML document
     *
     * @var \Inspirum\XML\Services\XML
     */
    private $xml;

    /**
     * XMLReader constructor
     *
     * @param string $filepath
     */
    public function __construct(string $filepath)
    {
        $this->reader = $this->open($filepath);
        $this->xml    = new XML();
    }

    /**
     * XMLReader destructor
     */
    public function __destruct()
    {
        $this->reader->close();
    }

    /**
     * Open file
     *
     * @param string $filepath
     *
     * @return \XMLReader
     *
     * @throws \Exception
     */
    private function open(string $filepath): BaseXMLReader
    {
        $xmlReader = new BaseXMLReader();

        $opened = $this->withErrorHandler(function () use ($xmlReader, $filepath) {
            return $xmlReader->open($filepath);
        });

        if ($opened == false) {
            // @codeCoverageIgnoreStart
            throw new Exception('\XMLReader::open() method failed');
            // @codeCoverageIgnoreEnd
        }

        return $xmlReader;
    }

    /**
     * Parse file and yield next node
     *
     * @param string $nodeName
     *
     * @return \Generator|\Inspirum\XML\Services\XMLNode[]
     */
    public function iterateNode(string $nodeName): iterable
    {
        $found = $this->moveToNode($nodeName);

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

        do {
            $item = $this->readNode();

            if ($item !== null) {
                yield $item;
            }
        } while ($this->moveToNextNode($nodeName));
    }

    /**
     * Get next node
     *
     * @param string $nodeName
     *
     * @return \Inspirum\XML\Services\XMLNode|null
     */
    public function nextNode(string $nodeName): ?XMLNode
    {
        $found = $this->moveToNode($nodeName);

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

        return $this->readNode();
    }

    /**
     * Move to first element by tag name
     *
     * @param string $nodeName
     *
     * @return bool
     */
    private function moveToNode(string $nodeName): bool
    {
        while ($this->read()) {
            if ($this->isNodeElementType() && $this->getNodeName() === $nodeName) {
                return true;
            }
        }

        return false;
    }

    /**
     * Move to next sibling element by tag name
     *
     * @param string $nodeName
     *
     * @return bool
     */
    private function moveToNextNode(string $nodeName): bool
    {
        while ($this->reader->next(Formatter::getLocalName($nodeName))) {
            if ($this->getNodeName() === $nodeName) {
                return true;
            }
        }

        return false;
    }

    /**
     * Return associative array of element by name
     *
     * @return \Inspirum\XML\Services\XMLNode|null
     */
    private function readNode(): ?XMLNode
    {
        $nodeName   = $this->getNodeName();
        $attributes = $this->getNodeAttributes();

        if ($this->isNodeEmptyElementType()) {
            return $this->xml->createElement($nodeName, $attributes);
        }

        $node     = null;
        $text     = null;
        $elements = [];

        while ($this->read()) {
            if ($this->isNodeElementEndType() && $this->getNodeName() == $nodeName) {
                $node = $this->xml->createTextElement($nodeName, $text, $attributes);

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

                break;
            } elseif ($this->isNodeTextType()) {
                $text = $this->getNodeValue();
            } elseif ($this->isNodeElementType()) {
                if ($this->isNodeEmptyElementType()) {
                    $elements[] = $this->xml->createElement($this->getNodeName());
                    continue;
                }

                $element = $this->readNode();

                if ($element instanceof XMLNode) {
                    $elements[] = $element;
                }
            }
        }

        return $node;
    }

    /**
     * Move to next node in document
     *
     * @return bool
     *
     * @throws \DOMException
     */
    private function read(): bool
    {
        return $this->withErrorHandler(function () {
            return $this->reader->read();
        });
    }

    /**
     * Get current node name
     *
     * @return string
     */
    private function getNodeName(): string
    {
        return $this->reader->name;
    }

    /**
     * Get current node type
     *
     * @return int
     */
    private function getNodeType(): int
    {
        return $this->reader->nodeType;
    }

    /**
     * Get current node value
     *
     * @return string
     */
    private function getNodeValue(): string
    {
        return $this->reader->value;
    }

    /**
     * If current node is element open tag
     *
     * @return bool
     */
    private function isNodeElementType(): bool
    {
        return $this->isNodeType(BaseXMLReader::ELEMENT);
    }

    /**
     * If current node is element open tag
     *
     * @return bool
     */
    private function isNodeEmptyElementType(): bool
    {
        return $this->reader->isEmptyElement;
    }

    /**
     * If current node is element close tag
     *
     * @return bool
     */
    private function isNodeElementEndType(): bool
    {
        return $this->isNodeType(BaseXMLReader::END_ELEMENT);
    }

    /**
     * If current node is text content
     *
     * @return bool
     */
    private function isNodeTextType(): bool
    {
        return $this->isNodeType(BaseXMLReader::TEXT) || $this->isNodeType(BaseXMLReader::CDATA);
    }

    /**
     * If current node is given node type
     *
     * @param int $type
     *
     * @return bool
     */
    private function isNodeType(int $type): bool
    {
        return $this->getNodeType() === $type;
    }

    /**
     * Get current node attributes
     *
     * @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;
    }

    /**
     * Register custom error handler to throw Exception on warning message
     *
     * @param callable $callback
     *
     * @return mixed
     *
     * @throws \DOMException
     */
    protected function withErrorHandler(callable $callback)
    {
        set_error_handler(function (int $code, string $message) {
            if (strpos($message, 'XMLReader::') !== false) {
                throw new Exception($message, $code);
            }
        });

        $response = $callback();

        restore_error_handler();

        return $response;
    }
}


1		<?php
2
3		namespace Inspirum\XML\Services;
4
5		use Exception;
6		use XMLReader as BaseXMLReader;
7
8		class XMLReader
9		{
10		/**
11		* XML Reader
12		*
13		* @var \XMLReader
14		*/
15		private $reader;
16
17		/**
18		* XML document
19		*
20		* @var \Inspirum\XML\Services\XML
21		*/
22		private $xml;
23
24		/**
25		* XMLReader constructor
26		*
27		* @param string $filepath
28		*/
29	17	public function __construct(string $filepath)
30		{
31	17	$this->reader = $this->open($filepath);
32	15	$this->xml = new XML();
33	15	}
34
35		/**
36		* XMLReader destructor
37		*/
38	13	public function __destruct()
39		{
40	13	$this->reader->close();
41	13	}
42
43		/**
44		* Open file
45		*
46		* @param string $filepath
47		*
48		* @return \XMLReader
49		*
50		* @throws \Exception
51		*/
52	17	private function open(string $filepath): BaseXMLReader
53		{
54	17	$xmlReader = new BaseXMLReader();
55
56	17	$opened = $this->withErrorHandler(function () use ($xmlReader, $filepath) {
57	17	return $xmlReader->open($filepath);
58	17	});
59
60	15	if ($opened == false) {
61		// @codeCoverageIgnoreStart
62		throw new Exception('\XMLReader::open() method failed');
63		// @codeCoverageIgnoreEnd
64		}
65
66	15	return $xmlReader;
67		}
68
69		/**
70		* Parse file and yield next node
71		*
72		* @param string $nodeName
73		*
74		* @return \Generator\|\Inspirum\XML\Services\XMLNode[]
75		*/
76	7	public function iterateNode(string $nodeName): iterable
77		{
78	7	$found = $this->moveToNode($nodeName);
79
80	6	if ($found === false) {
81	1	return yield from [];
82		}
83
84		do {
85	5	$item = $this->readNode();
86
87	5	if ($item !== null) {
88	5	yield $item;
89		}
90	5	} while ($this->moveToNextNode($nodeName));
91	5	}
92
93		/**
94		* Get next node
95		*
96		* @param string $nodeName
97		*
98		* @return \Inspirum\XML\Services\XMLNode\|null
99		*/
100	8	public function nextNode(string $nodeName): ?XMLNode
101		{
102	8	$found = $this->moveToNode($nodeName);
103
104	7	if ($found === false) {
105	2	return null;
106		}
107
108	6	return $this->readNode();
109		}
110
111		/**
112		* Move to first element by tag name
113		*
114		* @param string $nodeName
115		*
116		* @return bool
117		*/
118	14	private function moveToNode(string $nodeName): bool
119		{
120	14	while ($this->read()) {
121	12	if ($this->isNodeElementType() && $this->getNodeName() === $nodeName) {
122	10	return true;
123		}
124		}
125
126	3	return false;
127		}
128
129		/**
130		* Move to next sibling element by tag name
131		*
132		* @param string $nodeName
133		*
134		* @return bool
135		*/
136	5	private function moveToNextNode(string $nodeName): bool
137		{
138	5	while ($this->reader->next(Formatter::getLocalName($nodeName))) {
139	5	if ($this->getNodeName() === $nodeName) {
140	4	return true;
141		}
142		}
143
144	5	return false;
145		}
146
147		/**
148		* Return associative array of element by name
149		*
150		* @return \Inspirum\XML\Services\XMLNode\|null
151		*/
152	10	private function readNode(): ?XMLNode
153		{
154	10	$nodeName = $this->getNodeName();
155	10	$attributes = $this->getNodeAttributes();
156
157	10	if ($this->isNodeEmptyElementType()) {
158	1	return $this->xml->createElement($nodeName, $attributes);
159		}
160
161	9	$node = null;
162	9	$text = null;
163	9	$elements = [];
164
165	9	while ($this->read()) {
166	9	if ($this->isNodeElementEndType() && $this->getNodeName() == $nodeName) {
167	9	$node = $this->xml->createTextElement($nodeName, $text, $attributes);
168
169	9	foreach ($elements as $element) {
170	6	$node->append($element);
171		}
172
173	9	break;
174	8	} elseif ($this->isNodeTextType()) {
175	8	$text = $this->getNodeValue();
176	6	} elseif ($this->isNodeElementType()) {
177	6	if ($this->isNodeEmptyElementType()) {
178	1	$elements[] = $this->xml->createElement($this->getNodeName());
179	1	continue;
180		}
181
182	6	$element = $this->readNode();
183
184	6	if ($element instanceof XMLNode) {
185	6	$elements[] = $element;
186		}
187		}
188		}
189
190	9	return $node;
191		}
192
193		/**
194		* Move to next node in document
195		*
196		* @return bool
197		*
198		* @throws \DOMException
199		*/
200	14	private function read(): bool
201		{
202	14	return $this->withErrorHandler(function () {
203	14	return $this->reader->read();
204	14	});
205		}
206
207		/**
208		* Get current node name
209		*
210		* @return string
211		*/
212	12	private function getNodeName(): string
213		{
214	12	return $this->reader->name;
215		}
216
217		/**
218		* Get current node type
219		*
220		* @return int
221		*/
222	12	private function getNodeType(): int
223		{
224	12	return $this->reader->nodeType;
225		}
226
227		/**
228		* Get current node value
229		*
230		* @return string
231		*/
232	10	private function getNodeValue(): string
233		{
234	10	return $this->reader->value;
235		}
236
237		/**
238		* If current node is element open tag
239		*
240		* @return bool
241		*/
242	12	private function isNodeElementType(): bool
243		{
244	12	return $this->isNodeType(BaseXMLReader::ELEMENT);
245		}
246
247		/**
248		* If current node is element open tag
249		*
250		* @return bool
251		*/
252	10	private function isNodeEmptyElementType(): bool
253		{
254	10	return $this->reader->isEmptyElement;
255		}
256
257		/**
258		* If current node is element close tag
259		*
260		* @return bool
261		*/
262	9	private function isNodeElementEndType(): bool
263		{
264	9	return $this->isNodeType(BaseXMLReader::END_ELEMENT);
265		}
266
267		/**
268		* If current node is text content
269		*
270		* @return bool
271		*/
272	8	private function isNodeTextType(): bool
273		{
274	8	return $this->isNodeType(BaseXMLReader::TEXT) \|\| $this->isNodeType(BaseXMLReader::CDATA);
275		}
276
277		/**
278		* If current node is given node type
279		*
280		* @param int $type
281		*
282		* @return bool
283		*/
284	12	private function isNodeType(int $type): bool
285		{
286	12	return $this->getNodeType() === $type;
287		}
288
289		/**
290		* Get current node attributes
291		*
292		* @return array<string,string>
293		*/
294	10	private function getNodeAttributes(): array
295		{
296	10	$attributes = [];
297
298	10	if ($this->reader->hasAttributes) {
299	6	while ($this->reader->moveToNextAttribute()) {
300	6	$attributes[$this->getNodeName()] = $this->getNodeValue();
301		}
302	6	$this->reader->moveToElement();
303		}
304
305	10	return $attributes;
306		}
307
308		/**
309		* Register custom error handler to throw Exception on warning message
310		*
311		* @param callable $callback
312		*
313		* @return mixed
314		*
315		* @throws \DOMException
316		*/
317	26	protected function withErrorHandler(callable $callback)
318		{
319	17	set_error_handler(function (int $code, string $message) {
320	13	if (strpos($message, 'XMLReader::') !== false) {
321	4	throw new Exception($message, $code);
322		}
323	26	});
324
325	17	$response = $callback();
326
327	15	restore_error_handler();
328
329	15	return $response;
330		}
331		}
332

inspirum / xml-php

Branch — master (f25cb1)

XMLReader::isNodeEmptyElementType() A

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