GraphFormatter::getGraph() - Code Metrics - Inspection of "Create GraphFormatter Class" - SemanticMediaWiki/SemanticResultFormats - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#538)

unknown

created 2019-08-29 11:22 UTC

GraphFormatter::getGraph() A

↳ Parent: GraphFormatter

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	3
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	0
crap	1

<?php

namespace SRF\Graph;

use Html;

/**
 *
 *
 * @see https://www.semantic-mediawiki.org/wiki/Help:Graph_format
 *
 * @license GNU GPL v2+
 * @since 3.2
 *
 * @author Sebastian Schmid (gesinn.it)
 *
 */

class GraphFormatter {

	private $graph = "";

	protected $graphColors = [
		'black',
		'red',
		'green',
		'blue',
		'darkviolet',
		'gold',
		'deeppink',
		'brown',
		'bisque',
		'darkgreen',
		'yellow',
		'darkblue',
		'magenta',
		'steelblue2'
	];
	private $legendItem = [];
	private $options;

	public function __construct( $options ){
		$this->options = $options;
	}

	public function getGraph(){
		return $this->graph;
	}

	/*
	 * Add a single string to graph
	 *
	 * @param string $line
	 */
	private function add( $line ){
		$this->graph .= $line;
	}

	/*
	* Creates the DOT (graph description language) which can be processed by the graphviz lib
	*
	* @see https://www.graphviz.org/
	* @since 3.2
	*
	* @param SRF\Graph\GraphNodes[] $nodes
	*/
	public function buildGraph($nodes){
		$this->add( "digraph " . $this->options->getGraphName() . " {" );

		// set fontsize and fontname of graph, nodes and edges
		$this->add( "graph [fontsize=10, fontname=\"Verdana\"]\n" );
		$this->add( "node [fontsize=10, fontname=\"Verdana\"];\n" );
		$this->add( "edge [fontsize=10, fontname=\"Verdana\"];\n" );

		// choose graphsize, nodeshapes and rank direction
		if ( $this->options->getGraphSize() != '' ) {
			$this->add("size=\"" . $this->options->getGraphSize() . "\";");
		}

		if ( $this->options->getNodeShape() != '' ) {
			$this->add( "node [shape=" . $this->options->getNodeShape() . "];" );
		}

		$this->add( "rankdir=" . $this->options->getRankDir() . ";" );

		/** @var \SRF\GraphNode $node */
		foreach ( $nodes as $node ) {

			// take "displaytitle" as node-label if it is set
			if ( $this->options->getNodeLabel() === GraphPrinter::NODELABEL_DISPLAYTITLE) {
				$objectDisplayTitle = $node->getLabel();
				if ( !empty( $objectDisplayTitle )) {
					$nodeLabel = $this->getWordWrappedText( $objectDisplayTitle,
						$this->options->getWordWrapLimit() );
				}
			}

			/**
			 * Add nodes to the graph
			 *
			 * @var \SRF\Graph\GraphNode $node
			 */
			$this->add( "\"" . $node->getID() . "\"" );

			if ( $this->options->isGraphLink() ) {

				$nodeLinkURL = "[[" . $node->getID() . "]]";

				if( $nodeLabel === '' ) {
					$this->add( " [URL = \"$nodeLinkURL\"]" );
				} else {
					$this->add( " [URL = \"$nodeLinkURL\", label = \"$nodeLabel\"]" );
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
				}
			}
			$this->add( "; ");
		}

		/**
		 * Add edges to the graph
		 *
		 * @var \SRF\Graph\GraphNode $node
		 */
		foreach ( $nodes as $node ) {

			if ( count( $node->getParentNode() ) > 0 ) {

				foreach ( $node->getParentNode() as $parentNode ) {

					// handle parent/child switch (parentRelation)
					$this->add( $this->options->getParentRelation() ? " \"" . $parentNode['object']
						. "\" -> \"" . $node->getID() . "\""
						: " \"" . $node->getID() . "\" -> \"" . $parentNode['object'] . "\" " );

					if ( $this->options->isGraphLabel() || $this->options->isGraphColor()
					) {
						$this->add( ' [' );

						// add legend item only if missing
						if ( array_search( $parentNode['predicate'], $this->legendItem, true ) === false ) {
							$this->legendItem[] = $parentNode['predicate'];
						}

						// assign color
						$color = $this->graphColors[array_search( $parentNode['predicate'], $this->legendItem, true )];

						// show arrow label (graphLabel is misleading but kept for compatibility reasons)
						if ( $this->options->isGraphLabel() ) {
							$this->add( "label=\"" . $parentNode['predicate'] . "\"" );
							if ( $this->options->isGraphColor() ) {
								$this->add( ",fontcolor=$color," );
							}
						}

						// colorize arrow
						if ( $this->options->isGraphColor() ) {
							$this->add( "color=$color" );
						}
						$this->add( "]" );
					}
					$this->add( ";" );
				}
			}
		}
		$this->add( "}" );
	}

	/**
	 * Creates the graph legend
	 *
	 * @return string Html::rawElement
	 */
	public function getGraphLegend(){
		$itemsHtml = '';
		$colorCount = 0;
		$arraySize = count( $this->graphColors );

		if ( $this->options->isGraphLegend() && $this->options->isGraphColor() ) {
			foreach ( $this->legendItem as $legendLabel ) {
				if ( $colorCount >= $arraySize ) {
					$colorCount = 0;
				}

				$color = $this->graphColors[$colorCount];
				$itemsHtml .= Html::rawElement( 'div', [ 'class' => 'graphlegenditem', 'style' => "color: $color" ],
					"$color: $legendLabel" );

				$colorCount ++;
			}
		}

		return Html::rawElement( 'div', [ 'class' => 'graphlegend' ], "$itemsHtml");
	}

	/**
	 * Returns the word wrapped version of the provided text.
	 *
	 * @param string $text
	 * @param integer $charLimit
	 *
	 * @return string
	 */
	public static function getWordWrappedText( $text, $charLimit ) {
		$charLimit = max( [ $charLimit, 1 ] );
		$segments = [];

		while ( strlen( $text ) > $charLimit ) {
			// Find the last space in the allowed range.
			$splitPosition = strrpos( substr( $text, 0, $charLimit ), ' ' );

			if ( $splitPosition === false ) {
				// If there is no space (lond word), find the next space.
				$splitPosition = strpos( $text, ' ' );

				if ( $splitPosition === false ) {
					// If there are no spaces, everything goes on one line.
					$splitPosition = strlen( $text ) - 1;
				}
			}

			$segments[] = substr( $text, 0, $splitPosition + 1 );
			$text = substr( $text, $splitPosition + 1 );
		}

		$segments[] = $text;

		return implode( '\n', $segments );
	}
}

1		<?php
2
3		namespace SRF\Graph;
4
5		use Html;
6
7		/**
8		*
9		*
10		* @see https://www.semantic-mediawiki.org/wiki/Help:Graph_format
11		*
12		* @license GNU GPL v2+
13		* @since 3.2
14		*
15		* @author Sebastian Schmid (gesinn.it)
16		*
17		*/
18
19		class GraphFormatter {
20
21		private $graph = "";
22
23		protected $graphColors = [
24		'black',
25		'red',
26		'green',
27		'blue',
28		'darkviolet',
29		'gold',
30		'deeppink',
31		'brown',
32		'bisque',
33		'darkgreen',
34		'yellow',
35		'darkblue',
36		'magenta',
37		'steelblue2'
38		];
39		private $legendItem = [];
40		private $options;
41
42	4	public function __construct( $options ){
43	4	$this->options = $options;
44	4	}
45
46	1	public function getGraph(){
47	1	return $this->graph;
48		}
49
50		/*
51		* Add a single string to graph
52		*
53		* @param string $line
54		*/
55	4	private function add( $line ){
56	4	$this->graph .= $line;
57	4	}
58
59		/*
60		* Creates the DOT (graph description language) which can be processed by the graphviz lib
61		*
62		* @see https://www.graphviz.org/
63		* @since 3.2
64		*
65		* @param SRF\Graph\GraphNodes[] $nodes
66		*/
67	4	public function buildGraph($nodes){
68	4	$this->add( "digraph " . $this->options->getGraphName() . " {" );
69
70		// set fontsize and fontname of graph, nodes and edges
71	4	$this->add( "graph [fontsize=10, fontname=\"Verdana\"]\n" );
72	4	$this->add( "node [fontsize=10, fontname=\"Verdana\"];\n" );
73	4	$this->add( "edge [fontsize=10, fontname=\"Verdana\"];\n" );
74
75		// choose graphsize, nodeshapes and rank direction
76	4	if ( $this->options->getGraphSize() != '' ) {
77	4	$this->add("size=\"" . $this->options->getGraphSize() . "\";");
78		}
79
80	4	if ( $this->options->getNodeShape() != '' ) {
81	4	$this->add( "node [shape=" . $this->options->getNodeShape() . "];" );
82		}
83
84	4	$this->add( "rankdir=" . $this->options->getRankDir() . ";" );
85
86		/** @var \SRF\GraphNode $node */
87	4	foreach ( $nodes as $node ) {
88
89		// take "displaytitle" as node-label if it is set
90	4	if ( $this->options->getNodeLabel() === GraphPrinter::NODELABEL_DISPLAYTITLE) {
91	4	$objectDisplayTitle = $node->getLabel();
92	4	if ( !empty( $objectDisplayTitle )) {
93	4	$nodeLabel = $this->getWordWrappedText( $objectDisplayTitle,
94	4	$this->options->getWordWrapLimit() );
95		}
96		}
97
98		/**
99		* Add nodes to the graph
100		*
101		* @var \SRF\Graph\GraphNode $node
102		*/
103	4	$this->add( "\"" . $node->getID() . "\"" );
104
105	4	if ( $this->options->isGraphLink() ) {
106
107	4	$nodeLinkURL = "[[" . $node->getID() . "]]";
108
109	4	if( $nodeLabel === '' ) {
110		$this->add( " [URL = \"$nodeLinkURL\"]" );
111		} else {
112	4	$this->add( " [URL = \"$nodeLinkURL\", label = \"$nodeLabel\"]" );
		0 ignored issues – show Bug introduced 2019-08-26 15:56 UTC by Report Bug Copy Issue Report The variable `$nodeLabel` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
113		}
114		}
115	4	$this->add( "; ");
116		}
117
118		/**
119		* Add edges to the graph
120		*
121		* @var \SRF\Graph\GraphNode $node
122		*/
123	4	foreach ( $nodes as $node ) {
124
125	4	if ( count( $node->getParentNode() ) > 0 ) {
126
127	4	foreach ( $node->getParentNode() as $parentNode ) {
128
129		// handle parent/child switch (parentRelation)
130	4	$this->add( $this->options->getParentRelation() ? " \"" . $parentNode['object']
131	4	. "\" -> \"" . $node->getID() . "\""
132	4	: " \"" . $node->getID() . "\" -> \"" . $parentNode['object'] . "\" " );
133
134	4	if ( $this->options->isGraphLabel() \|\| $this->options->isGraphColor()
135		) {
136	4	$this->add( ' [' );
137
138		// add legend item only if missing
139	4	if ( array_search( $parentNode['predicate'], $this->legendItem, true ) === false ) {
140	4	$this->legendItem[] = $parentNode['predicate'];
141		}
142
143		// assign color
144	4	$color = $this->graphColors[array_search( $parentNode['predicate'], $this->legendItem, true )];
145
146		// show arrow label (graphLabel is misleading but kept for compatibility reasons)
147	4	if ( $this->options->isGraphLabel() ) {
148	4	$this->add( "label=\"" . $parentNode['predicate'] . "\"" );
149	4	if ( $this->options->isGraphColor() ) {
150	4	$this->add( ",fontcolor=$color," );
151		}
152		}
153
154		// colorize arrow
155	4	if ( $this->options->isGraphColor() ) {
156	4	$this->add( "color=$color" );
157		}
158	4	$this->add( "]" );
159		}
160	4	$this->add( ";" );
161		}
162		}
163		}
164	4	$this->add( "}" );
165	4	}
166
167		/**
168		* Creates the graph legend
169		*
170		* @return string Html::rawElement
171		*/
172	1	public function getGraphLegend(){
173	1	$itemsHtml = '';
174	1	$colorCount = 0;
175	1	$arraySize = count( $this->graphColors );
176
177	1	if ( $this->options->isGraphLegend() && $this->options->isGraphColor() ) {
178	1	foreach ( $this->legendItem as $legendLabel ) {
179	1	if ( $colorCount >= $arraySize ) {
180		$colorCount = 0;
181		}
182
183	1	$color = $this->graphColors[$colorCount];
184	1	$itemsHtml .= Html::rawElement( 'div', [ 'class' => 'graphlegenditem', 'style' => "color: $color" ],
185	1	"$color: $legendLabel" );
186
187	1	$colorCount ++;
188		}
189		}
190
191	1	return Html::rawElement( 'div', [ 'class' => 'graphlegend' ], "$itemsHtml");
192		}
193
194		/**
195		* Returns the word wrapped version of the provided text.
196		*
197		* @param string $text
198		* @param integer $charLimit
199		*
200		* @return string
201		*/
202	4	public static function getWordWrappedText( $text, $charLimit ) {
203	4	$charLimit = max( [ $charLimit, 1 ] );
204	4	$segments = [];
205
206	4	while ( strlen( $text ) > $charLimit ) {
207		// Find the last space in the allowed range.
208	1	$splitPosition = strrpos( substr( $text, 0, $charLimit ), ' ' );
209
210	1	if ( $splitPosition === false ) {
211		// If there is no space (lond word), find the next space.
212		$splitPosition = strpos( $text, ' ' );
213
214		if ( $splitPosition === false ) {
215		// If there are no spaces, everything goes on one line.
216		$splitPosition = strlen( $text ) - 1;
217		}
218		}
219
220	1	$segments[] = substr( $text, 0, $splitPosition + 1 );
221	1	$text = substr( $text, $splitPosition + 1 );
222		}
223
224	4	$segments[] = $text;
225
226	4	return implode( '\n', $segments );
227		}
228		}

SemanticMediaWiki / SemanticResultFormats

Pull Request — master (#538)

GraphFormatter::getGraph() A

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