DiffViewHelper::render() - Code Metrics - Inspection of "Merge pull request #25 from ElementareTeilchen/pat..." - aertmann/history - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e05b73...a0cd97 )

by Aske

created 2019-11-06 13:50 UTC

DiffViewHelper::render() C

↳ Parent: DiffViewHelper

Complexity

Conditions	17
Paths	16

Size

Total Lines	75
Code Lines	53

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	17
eloc	53
nc	16
nop	0
dl	0
loc	75
rs	5.2166
c	1
b	0
f	0

How to fix Long Method Complexity

<?php
namespace AE\History\ViewHelpers;

use Neos\ContentRepository\Domain\Model\NodeType;
use Neos\ContentRepository\Domain\Service\NodeTypeManager;
use Neos\Diff\Diff;
use Neos\Diff\Renderer\Html\HtmlArrayRenderer;
use Neos\Flow\Annotations as Flow;
use Neos\FluidAdaptor\Core\ViewHelper\AbstractViewHelper;
use Neos\FluidAdaptor\Core\ViewHelper\Exception as ViewHelperException;
use Neos\Media\Domain\Model\AssetInterface;
use Neos\Media\Domain\Model\ImageInterface;
use Neos\Neos\EventLog\Domain\Model\NodeEvent;

/**
 * Renders the difference between the original and the changed content of the given node and returns it, along with meta
 * information, in an array.
 */
class DiffViewHelper extends AbstractViewHelper
{
    /**
     * @var boolean
     */
    protected $escapeOutput = false;

    /**
     * @Flow\Inject
     * @var NodeTypeManager
     */
    protected $nodeTypeManager;

    /**
     * @return void
     *
     * @throws ViewHelperException
     */
    public function initializeArguments() : void
    {
        parent::initializeArguments();

        $this->registerArgument('nodeEvent', NodeEvent::class, 'The NodeEvent to extract the diff from.', true);
    }

    /**
     * @return string
     * @throws \Neos\ContentRepository\Exception\NodeTypeNotFoundException
     */
    public function render() : string
    {
        $data = $this->arguments['nodeEvent']->getData();
        $old = $data['old'];
        $new = $data['new'];
        $nodeType = $this->nodeTypeManager->getNodeType($data['nodeType']);
        $changeNodePropertiesDefaults = $nodeType->getDefaultValuesForProperties();

        $renderer = new HtmlArrayRenderer();
        $changes = [];
        foreach ($new as $propertyName => $changedPropertyValue) {
            if (($old === null && empty($changedPropertyValue))
                || (isset($changeNodePropertiesDefaults[$propertyName])
                    && $changedPropertyValue === $changeNodePropertiesDefaults[$propertyName]
                )
            ) {
                continue;
            }

            $originalPropertyValue = ($old === null ? null : $old[$propertyName]);

            if (!is_object($originalPropertyValue) && !is_object($changedPropertyValue)) {
                $originalSlimmedDownContent = $this->renderSlimmedDownContent($originalPropertyValue);
                $changedSlimmedDownContent = $this->renderSlimmedDownContent($changedPropertyValue);

                $diff = new Diff(
                    explode("\n", $originalSlimmedDownContent),
                    explode("\n", $changedSlimmedDownContent),
                    ['context' => 1]
                );
                /** @var array $diffArray */
                $diffArray = $diff->render($renderer);
                $this->postProcessDiffArray($diffArray);
                if ($diffArray !== []) {
                    $changes[$propertyName] = [
                        'diff' => $diffArray,
                        'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
                        'type' => 'text',
                    ];
                }
            } elseif ($originalPropertyValue instanceof ImageInterface
                || $changedPropertyValue instanceof ImageInterface
            ) {
                $changes[$propertyName] = [
                    'changed' => $changedPropertyValue,
                    'original' => $originalPropertyValue,
                    'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
                    'type' => 'image',
                ];
            } elseif ($originalPropertyValue instanceof AssetInterface
                || $changedPropertyValue instanceof AssetInterface
            ) {
                $changes[$propertyName] = [
                    'changed' => $changedPropertyValue,
                    'original' => $originalPropertyValue,
                    'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
                    'type' => 'asset',
                ];
            } elseif ($originalPropertyValue instanceof \DateTimeInterface
                && $changedPropertyValue instanceof \DateTimeInterface
            ) {
                if ($changedPropertyValue->getTimestamp() !== $originalPropertyValue->getTimestamp()) {
                    $changes[$propertyName] = [
                        'changed' => $changedPropertyValue,
                        'original' => $originalPropertyValue,
                        'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
                        'type' => 'datetime',
                    ];
                }
            }
        }
        $this->templateVariableContainer->add('changes', $changes);
        $content = $this->renderChildren();
        $this->templateVariableContainer->remove('changes');
        return $content;

    }

    /**
     * Tries to determine a label for the specified property
     *
     * @param string $propertyName
     * @param NodeType $nodeType
     *
     * @return string
     */
    protected function getPropertyLabel(string $propertyName, NodeType $nodeType) : string
    {
        return $nodeType->getProperties()[$propertyName]['ui']['label'] ?? $propertyName;
    }

    /**
     * Renders a slimmed down representation of a property of the given node. The output will be HTML, but does not
     * contain any markup from the original content.
     *
     * Note: It's clear that this method needs to be extracted and moved to a more universal service at some point.
     * However, since we only implemented diff-view support for this particular controller at the moment, it stays
     * here for the time being. Once we start displaying diffs elsewhere, we should refactor the diff rendering part.
     *
     * @param mixed $propertyValue
     *
     * @return string
     */
    protected function renderSlimmedDownContent($propertyValue) : string
    {
        $content = '';
        if (is_string($propertyValue)) {
            $contentSnippet = str_replace('&nbsp;', ' ', $propertyValue);
            $contentSnippet = preg_replace('/<br[^>]*>/', "\n", $contentSnippet);
            $contentSnippet = preg_replace(['/<[^>]*>/', '/ {2,}/'], ' ', $contentSnippet);
            $content = trim($contentSnippet);
        }
        return $content;
    }

    /**
     * A workaround for some missing functionality in the Diff Renderer:
     *
     * This method will check if content in the given diff array is either completely new or has been completely
     * removed and wraps the respective part in <ins> or <del> tags, because the Diff Renderer currently does not
     * do that in these cases.
     *
     * @param array $diffArray
     *
     * @return void
     */
    protected function postProcessDiffArray(array &$diffArray)
    {
        foreach ($diffArray as $index => $blocks) {
            foreach ($blocks as $blockIndex => $block) {
                $baseLines = trim(implode('', $block['base']['lines']), " \t\n\r\0\xC2\xA0");
                $changedLines = trim(implode('', $block['changed']['lines']), " \t\n\r\0\xC2\xA0");
                if ($baseLines === '') {
                    foreach ($block['changed']['lines'] as $lineIndex => $line) {
                        $diffArray[$index][$blockIndex]['changed']['lines'][$lineIndex] = '<ins>' . $line . '</ins>';
                    }
                }
                if ($changedLines === '') {
                    foreach ($block['base']['lines'] as $lineIndex => $line) {
                        $diffArray[$index][$blockIndex]['base']['lines'][$lineIndex] = '<del>' . $line . '</del>';
                    }
                }
            }
        }
    }
}


1			<?php
2			namespace AE\History\ViewHelpers;
3
4			use Neos\ContentRepository\Domain\Model\NodeType;
5			use Neos\ContentRepository\Domain\Service\NodeTypeManager;
6			use Neos\Diff\Diff;
7			use Neos\Diff\Renderer\Html\HtmlArrayRenderer;
8			use Neos\Flow\Annotations as Flow;
9			use Neos\FluidAdaptor\Core\ViewHelper\AbstractViewHelper;
10			use Neos\FluidAdaptor\Core\ViewHelper\Exception as ViewHelperException;
11			use Neos\Media\Domain\Model\AssetInterface;
12			use Neos\Media\Domain\Model\ImageInterface;
13			use Neos\Neos\EventLog\Domain\Model\NodeEvent;
14
15			/**
16			* Renders the difference between the original and the changed content of the given node and returns it, along with meta
17			* information, in an array.
18			*/
19			class DiffViewHelper extends AbstractViewHelper
20			{
21			/**
22			* @var boolean
23			*/
24			protected $escapeOutput = false;
25
26			/**
27			* @Flow\Inject
28			* @var NodeTypeManager
29			*/
30			protected $nodeTypeManager;
31
32			/**
33			* @return void
34			*
35			* @throws ViewHelperException
36			*/
37			public function initializeArguments() : void
38			{
39			parent::initializeArguments();
40
41			$this->registerArgument('nodeEvent', NodeEvent::class, 'The NodeEvent to extract the diff from.', true);
42			}
43
44			/**
45			* @return string
46			* @throws \Neos\ContentRepository\Exception\NodeTypeNotFoundException
47			*/
48			public function render() : string
49			{
50			$data = $this->arguments['nodeEvent']->getData();
51			$old = $data['old'];
52			$new = $data['new'];
53			$nodeType = $this->nodeTypeManager->getNodeType($data['nodeType']);
54			$changeNodePropertiesDefaults = $nodeType->getDefaultValuesForProperties();
55
56			$renderer = new HtmlArrayRenderer();
57			$changes = [];
58			foreach ($new as $propertyName => $changedPropertyValue) {
59			if (($old === null && empty($changedPropertyValue))
60			\|\| (isset($changeNodePropertiesDefaults[$propertyName])
61			&& $changedPropertyValue === $changeNodePropertiesDefaults[$propertyName]
62			)
63			) {
64			continue;
65			}
66
67			$originalPropertyValue = ($old === null ? null : $old[$propertyName]);
68
69			if (!is_object($originalPropertyValue) && !is_object($changedPropertyValue)) {
70			$originalSlimmedDownContent = $this->renderSlimmedDownContent($originalPropertyValue);
71			$changedSlimmedDownContent = $this->renderSlimmedDownContent($changedPropertyValue);
72
73			$diff = new Diff(
74			explode("\n", $originalSlimmedDownContent),
75			explode("\n", $changedSlimmedDownContent),
76			['context' => 1]
77			);
78			/** @var array $diffArray */
79			$diffArray = $diff->render($renderer);
80			$this->postProcessDiffArray($diffArray);
81			if ($diffArray !== []) {
82			$changes[$propertyName] = [
83			'diff' => $diffArray,
84			'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
85			'type' => 'text',
86			];
87			}
88			} elseif ($originalPropertyValue instanceof ImageInterface
89			\|\| $changedPropertyValue instanceof ImageInterface
90			) {
91			$changes[$propertyName] = [
92			'changed' => $changedPropertyValue,
93			'original' => $originalPropertyValue,
94			'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
95			'type' => 'image',
96			];
97			} elseif ($originalPropertyValue instanceof AssetInterface
98			\|\| $changedPropertyValue instanceof AssetInterface
99			) {
100			$changes[$propertyName] = [
101			'changed' => $changedPropertyValue,
102			'original' => $originalPropertyValue,
103			'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
104			'type' => 'asset',
105			];
106			} elseif ($originalPropertyValue instanceof \DateTimeInterface
107			&& $changedPropertyValue instanceof \DateTimeInterface
108			) {
109			if ($changedPropertyValue->getTimestamp() !== $originalPropertyValue->getTimestamp()) {
110			$changes[$propertyName] = [
111			'changed' => $changedPropertyValue,
112			'original' => $originalPropertyValue,
113			'propertyLabel' => $this->getPropertyLabel($propertyName, $nodeType),
114			'type' => 'datetime',
115			];
116			}
117			}
118			}
119			$this->templateVariableContainer->add('changes', $changes);
120			$content = $this->renderChildren();
121			$this->templateVariableContainer->remove('changes');
122			return $content;
			0 ignored issues – show Bug Best Practice introduced 2018-11-27 12:01 UTC by Report Bug Copy Issue Report The expression `return $content` could return the type `null` which is incompatible with the type-hinted return `string`. Consider adding an additional type-check to rule them out. Loading history...
123			}
124
125			/**
126			* Tries to determine a label for the specified property
127			*
128			* @param string $propertyName
129			* @param NodeType $nodeType
130			*
131			* @return string
132			*/
133			protected function getPropertyLabel(string $propertyName, NodeType $nodeType) : string
134			{
135			return $nodeType->getProperties()[$propertyName]['ui']['label'] ?? $propertyName;
136			}
137
138			/**
139			* Renders a slimmed down representation of a property of the given node. The output will be HTML, but does not
140			* contain any markup from the original content.
141			*
142			* Note: It's clear that this method needs to be extracted and moved to a more universal service at some point.
143			* However, since we only implemented diff-view support for this particular controller at the moment, it stays
144			* here for the time being. Once we start displaying diffs elsewhere, we should refactor the diff rendering part.
145			*
146			* @param mixed $propertyValue
147			*
148			* @return string
149			*/
150			protected function renderSlimmedDownContent($propertyValue) : string
151			{
152			$content = '';
153			if (is_string($propertyValue)) {
154			$contentSnippet = str_replace(' ', ' ', $propertyValue);
155			$contentSnippet = preg_replace('/<br[^>]*>/', "\n", $contentSnippet);
156			$contentSnippet = preg_replace(['/<[^>]*>/', '/ {2,}/'], ' ', $contentSnippet);
157			$content = trim($contentSnippet);
158			}
159			return $content;
160			}
161
162			/**
163			* A workaround for some missing functionality in the Diff Renderer:
164			*
165			* This method will check if content in the given diff array is either completely new or has been completely
166			* removed and wraps the respective part in <ins> or <del> tags, because the Diff Renderer currently does not
167			* do that in these cases.
168			*
169			* @param array $diffArray
170			*
171			* @return void
172			*/
173			protected function postProcessDiffArray(array &$diffArray)
174			{
175			foreach ($diffArray as $index => $blocks) {
176			foreach ($blocks as $blockIndex => $block) {
177			$baseLines = trim(implode('', $block['base']['lines']), " \t\n\r\0\xC2\xA0");
178			$changedLines = trim(implode('', $block['changed']['lines']), " \t\n\r\0\xC2\xA0");
179			if ($baseLines === '') {
180			foreach ($block['changed']['lines'] as $lineIndex => $line) {
181			$diffArray[$index][$blockIndex]['changed']['lines'][$lineIndex] = '<ins>' . $line . '</ins>';
182			}
183			}
184			if ($changedLines === '') {
185			foreach ($block['base']['lines'] as $lineIndex => $line) {
186			$diffArray[$index][$blockIndex]['base']['lines'][$lineIndex] = '<del>' . $line . '</del>';
187			}
188			}
189			}
190			}
191			}
192			}
193

aertmann / history

Push — master ( e05b73...a0cd97 )

DiffViewHelper::render() C

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

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