Gv::getNodeAttributes() - Code Metrics - Inspection of "Update composer.json." - loophp/phptree - Measure and Improve Code Quality continuously with Scrutinizer

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by Pol

created 2020-02-26 18:17 UTC

Gv::getNodeAttributes() A

↳ Parent: Gv

Complexity

Conditions	3
Paths	2

Size

Total Lines	13
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	6
nc	2
nop	1
dl	0
loc	13
ccs	6
cts	6
cp	1
crap	3
rs	10
c	0
b	0
f	0

<?php

declare(strict_types=1);

namespace loophp\phptree\Exporter;

use Generator;
use loophp\phptree\Node\AttributeNodeInterface;
use loophp\phptree\Node\NodeInterface;

use function is_array;

use const PHP_EOL;

/**
 * Class Gv.
 */
class Gv extends AbstractExporter
{
    /**
     * The graph attributes.
     *
     * @var string[]|string[][]
     */
    private $attributes = [];

    /**
     * The graph type.
     *
     * @var bool
     */
    private $directed = true;

    /**
     * {@inheritdoc}
     */
    public function export(NodeInterface $node): string
    {
        $attributes = array_map(
            function ($key, $data) {
                if (is_array($data)) {
                    return sprintf(
                        '  %s %s',
                        $key,
                        $this->attributesArrayToText($data)
                    );
                }

                return sprintf(
                    '  %s = %s',
                    $key,
                    $data
                );
            },
            array_keys($this->attributes),
            $this->attributes
        );

        $nodes = [];

        foreach ($node->all() as $child) {
            $nodes[] = sprintf(
                '  "%s" %s',
                $this->getHash($child),
                $this->attributesArrayToText($this->getNodeAttributes($child))
            );
        }

        $edges = [];

        foreach ($this->findEdges($node) as $parent => $child) {
            $edges[] = sprintf(
                '  "%s" %s "%s";',
                $this->getHash($parent),
                true === $this->getDirected() ? '->' : '--',
                $this->getHash($child)
            );
        }

        return $this->getGv(
            implode(PHP_EOL, $attributes),
            implode(PHP_EOL, $nodes),
            implode(PHP_EOL, $edges)
        );
    }

    /**
     * Check if the graph is directed or undirected.
     *
     * @return bool
     *   True if directed, false otherwise.
     */
    public function getDirected(): bool
    {
        return $this->directed;
    }

    /**
     * Set the graph type, directed or undirected.
     *
     * @param bool $directed
     *   True for a directed graph, false otherwise.
     *
     * @return \loophp\phptree\Exporter\Gv
     *   The exporter.
     */
    public function setDirected(bool $directed = true): self
    {
        $this->directed = $directed;

        return $this;
    }

    /**
     * Set the graph attributes.
     *
     * @param array<mixed, mixed> $attributes
     *   The graph attributes.
     *
     * @return \loophp\phptree\Exporter\Gv
     *   The exporter.
     */
    public function setGraphAttributes(array $attributes): self
    {
        $this->attributes = $attributes;

        return $this;
    }

    /**
     * Converts an attributes array to string.
     *
     * @param array<mixed, mixed> $attributes
     *   The attributes.
     *
     * @return string
     *   The attributes as string.
     */
    protected function attributesArrayToText(array $attributes): string
    {
        $attributesText = array_filter(
            array_map(
                static function ($key, $value) {
                    if (null === $value || is_scalar($value) || method_exists($value, '__toString')) {
                        $value = (string) $value;
                    } else {
                        return null;
                    }

                    return sprintf('%s="%s"', $key, $value);
                },
                array_keys($attributes),
                $attributes
            )
        );

        return '[' . implode(' ', $attributesText) . ']';
    }

    /**
     * Recursively find all the edges in a tree.
     *
     * @param \loophp\phptree\Node\NodeInterface $node
     *   The root node.
     *
     * @return Generator<NodeInterface, NodeInterface>
     *   Yield the parent and child node.
     */
    protected function findEdges(NodeInterface $node): iterable
    {
        foreach ($node->children() as $child) {
            yield $node => $child;

            yield from $this->findEdges($child);
        }
    }

    /**
     * Get the default GV file content.
     *
     * @param string $attributes
     * @param string $nodes
     * @param string $edges
     *   The edges.
     *
     * @return string
     *   The content of the .gv file.
     */
    protected function getGv(string $attributes = '', string $nodes = '', string $edges = ''): string
    {
        $graphType = $this->getDirected() ?
            'digraph' :
            'graph';

        return <<<EOF
{$graphType} PHPTreeGraph {
// The graph attributes.
{$attributes}

// The graph nodes.
{$nodes}

// The graph edges.
{$edges}
}
EOF;
    }

    /**
     * Get the hash of a node.
     *
     * @param \loophp\phptree\Node\NodeInterface $node
     *   The node.
     *
     * @return string
     *   The hash of the node.
     */
    protected function getHash(NodeInterface $node): string
    {
        return sha1(spl_object_hash($node));
    }

    /**
     * Get the node attributes.
     *
     * @param \loophp\phptree\Node\NodeInterface $node
     *   The node interface.
     *
     * @return array<mixed, mixed>
     *   The attributes as an array.
     */
    protected function getNodeAttributes(NodeInterface $node): array
    {
        $attributes = [
            'label' => $this->getNodeRepresentation($node),
        ];

        if ($node instanceof AttributeNodeInterface) {
            foreach ($node->getAttributes() as $key => $value) {
                $attributes[$key] = $value;
            }
        }

        return $attributes;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace loophp\phptree\Exporter;
6
7		use Generator;
8		use loophp\phptree\Node\AttributeNodeInterface;
9		use loophp\phptree\Node\NodeInterface;
10
11		use function is_array;
12
13		use const PHP_EOL;
14
15		/**
16		* Class Gv.
17		*/
18		class Gv extends AbstractExporter
19		{
20		/**
21		* The graph attributes.
22		*
23		* @var string[]\|string[][]
24		*/
25		private $attributes = [];
26
27		/**
28		* The graph type.
29		*
30		* @var bool
31		*/
32		private $directed = true;
33
34		/**
35		* {@inheritdoc}
36		*/
37	2	public function export(NodeInterface $node): string
38		{
39	2	$attributes = array_map(
40		function ($key, $data) {
41	1	if (is_array($data)) {
42	1	return sprintf(
43	1	' %s %s',
44		$key,
45	1	$this->attributesArrayToText($data)
46		);
47		}
48
49	1	return sprintf(
50	1	' %s = %s',
51		$key,
52		$data
53		);
54	2	},
55	2	array_keys($this->attributes),
56	2	$this->attributes
57		);
58
59	2	$nodes = [];
60
61	2	foreach ($node->all() as $child) {
62	2	$nodes[] = sprintf(
63	2	' "%s" %s',
64	2	$this->getHash($child),
65	2	$this->attributesArrayToText($this->getNodeAttributes($child))
66		);
67		}
68
69	2	$edges = [];
70
71	2	foreach ($this->findEdges($node) as $parent => $child) {
72	1	$edges[] = sprintf(
73	1	' "%s" %s "%s";',
74	1	$this->getHash($parent),
75	1	true === $this->getDirected() ? '->' : '--',
76	1	$this->getHash($child)
77		);
78		}
79
80	2	return $this->getGv(
81	2	implode(PHP_EOL, $attributes),
82	2	implode(PHP_EOL, $nodes),
83	2	implode(PHP_EOL, $edges)
84		);
85		}
86
87		/**
88		* Check if the graph is directed or undirected.
89		*
90		* @return bool
91		* True if directed, false otherwise.
92		*/
93	2	public function getDirected(): bool
94		{
95	2	return $this->directed;
96		}
97
98		/**
99		* Set the graph type, directed or undirected.
100		*
101		* @param bool $directed
102		* True for a directed graph, false otherwise.
103		*
104		* @return \loophp\phptree\Exporter\Gv
105		* The exporter.
106		*/
107	1	public function setDirected(bool $directed = true): self
108		{
109	1	$this->directed = $directed;
110
111	1	return $this;
112		}
113
114		/**
115		* Set the graph attributes.
116		*
117		* @param array<mixed, mixed> $attributes
118		* The graph attributes.
119		*
120		* @return \loophp\phptree\Exporter\Gv
121		* The exporter.
122		*/
123	1	public function setGraphAttributes(array $attributes): self
124		{
125	1	$this->attributes = $attributes;
126
127	1	return $this;
128		}
129
130		/**
131		* Converts an attributes array to string.
132		*
133		* @param array<mixed, mixed> $attributes
134		* The attributes.
135		*
136		* @return string
137		* The attributes as string.
138		*/
139	2	protected function attributesArrayToText(array $attributes): string
140		{
141	2	$attributesText = array_filter(
142		array_map(
143		static function ($key, $value) {
144	2	if (null === $value \|\| is_scalar($value) \|\| method_exists($value, '__toString')) {
145	2	$value = (string) $value;
146		} else {
147		return null;
148		}
149
150	2	return sprintf('%s="%s"', $key, $value);
151	2	},
152	2	array_keys($attributes),
153		$attributes
154		)
155		);
156
157	2	return '[' . implode(' ', $attributesText) . ']';
158		}
159
160		/**
161		* Recursively find all the edges in a tree.
162		*
163		* @param \loophp\phptree\Node\NodeInterface $node
164		* The root node.
165		*
166		* @return Generator<NodeInterface, NodeInterface>
167		* Yield the parent and child node.
168		*/
169	2	protected function findEdges(NodeInterface $node): iterable
170		{
171	2	foreach ($node->children() as $child) {
172	1	yield $node => $child;
173
174	1	yield from $this->findEdges($child);
175		}
176	2	}
177
178		/**
179		* Get the default GV file content.
180		*
181		* @param string $attributes
182		* @param string $nodes
183		* @param string $edges
184		* The edges.
185		*
186		* @return string
187		* The content of the .gv file.
188		*/
189	2	protected function getGv(string $attributes = '', string $nodes = '', string $edges = ''): string
190		{
191	2	$graphType = $this->getDirected() ?
192	2	'digraph' :
193	2	'graph';
194
195		return <<<EOF
196	2	{$graphType} PHPTreeGraph {
197		// The graph attributes.
198	2	{$attributes}
199
200		// The graph nodes.
201	2	{$nodes}
202
203		// The graph edges.
204	2	{$edges}
205		}
206		EOF;
207		}
208
209		/**
210		* Get the hash of a node.
211		*
212		* @param \loophp\phptree\Node\NodeInterface $node
213		* The node.
214		*
215		* @return string
216		* The hash of the node.
217		*/
218	2	protected function getHash(NodeInterface $node): string
219		{
220	2	return sha1(spl_object_hash($node));
221		}
222
223		/**
224		* Get the node attributes.
225		*
226		* @param \loophp\phptree\Node\NodeInterface $node
227		* The node interface.
228		*
229		* @return array<mixed, mixed>
230		* The attributes as an array.
231		*/
232	2	protected function getNodeAttributes(NodeInterface $node): array
233		{
234		$attributes = [
235	2	'label' => $this->getNodeRepresentation($node),
236		];
237
238	2	if ($node instanceof AttributeNodeInterface) {
239	1	foreach ($node->getAttributes() as $key => $value) {
240	1	$attributes[$key] = $value;
241		}
242		}
243
244	2	return $attributes;
245		}
246		}
247

loophp / phptree

Push — master ( 28c5ec...7a4f55 )

Gv::getNodeAttributes() A

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