BaseResource::rewind() - Code Metrics - Inspection of "Merge pull request #51 from jonrmitchell/use-relat..." - frictionlessdata/datapackage-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 48e73f...b60bd4 )

unknown

created 2021-05-18 16:06 UTC

BaseResource::rewind() A

↳ Parent: BaseResource

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
nc	2
nop	0
dl	0
loc	8
rs	10
c	0
b	0
f	0

<?php

namespace frictionlessdata\datapackage\Resources;

use frictionlessdata\datapackage\DataStreams\BaseDataStream;
use frictionlessdata\datapackage\Registry;
use frictionlessdata\datapackage\Validators\ResourceValidationError;
use frictionlessdata\datapackage\Validators\ResourceValidator;
use frictionlessdata\datapackage\Exceptions\ResourceValidationFailedException;
use frictionlessdata\datapackage\Utils;

abstract class BaseResource implements \Iterator
{

    /**
     * BaseResource constructor.
     *
     * @param object $descriptor
     * @param null|string $basePath
     *
     * @param bool $skipValidations
     *
     * @throws \frictionlessdata\datapackage\Exceptions\ResourceValidationFailedException
     */
    public function __construct($descriptor, $basePath, $skipValidations = false)
    {
        $this->basePath = $basePath;
        $this->descriptor = Utils::objectify($descriptor);
        $this->skipValidations = $skipValidations;
        if (!$this->skipValidations) {
            $validationErrors = $this->validateResource();
            if (count($validationErrors) > 0) {
                throw new ResourceValidationFailedException($validationErrors);
            }
        }
    }

    public static function handlesDescriptor($descriptor)
    {
        return static::handlesProfile(Registry::getResourceValidationProfile($descriptor));
    }

    public function read($readOptions = null)
    {
        $limit = ($readOptions && isset($readOptions['limit'])) ? $readOptions['limit'] : null;
        $rows = [];
        foreach ($this->dataStreams() as $dataStream) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
            if (isset($dataStream->table)) {
                $readOptions['limit'] = $limit;
                foreach ($dataStream->table->read($readOptions) as $row) {
                    $rows[] = $row;
                    if ($limit !== null) {
                        --$limit;
                        if ($limit < 0) {
                            break;
                        }
                    }
                }
            } else {
                foreach ($dataStream as $row) {
                    $rows[] = $row;
                    if ($limit !== null) {
                        --$limit;
                        if ($limit < 0) {
                            break;
                        }
                    }
                }
            }
            if ($limit !== null && $limit < 0) {
                break;
            }
        }

        return $rows;
    }

    /**
     * Loads $this->dataStreams based on $this->path() and $this->data
     * @return BaseDataStream[]|null
     */
    public function dataStreams()
    {
        if (is_null($this->dataStreams)) {
            $this->dataStreams = [];
            foreach ($this->path() as $path) {
                $this->dataStreams[] = $this->getDataStream($path);
            }
            $data = $this->data();
            if ($data) {
                $this->dataStreams[] = $this->getInlineDataStream($data);
            }
        }

        return $this->dataStreams;
    }

    /**
     * @return object
     */
    public function descriptor()
    {
        return $this->descriptor;
    }

    /**
     * @return string
     */
    public function name()
    {
        return $this->descriptor()->name;
    }

    public function path()
    {
        if (isset($this->descriptor()->path)) {
            $path = $this->descriptor()->path;
            if (!is_array($path)) {
                $path = [$path];
            }

            return $path;
        } else {
            return [];
        }
    }

    /**
     * If the resource's $path is local (non-http)
     * @return bool
     */
    public function isLocal()
    {
        return !$this->isRemote();
    }

    /**
     * If the resource's $path is remote (http)
     * @return bool
     */
    public function isRemote()
    {
        $path = $this->path();
        return Utils::isHttpSource(is_array($path) && count($path) > 0 ? $path[0] : $path);
    }

    public function data()
    {
        return isset($this->descriptor()->data) ? $this->descriptor()->data : null;
    }

    // standard iterator functions - to iterate over the data sources
    public function rewind()
    {
        $this->dataStreams = null;
        $this->currentDataStream = 0;
        foreach ($this->dataStreams() as $dataStream) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
            $dataStream->rewind();
        }
    }

    public function current()
    {
        return $this->dataStreams()[$this->currentDataStream]->current();
    }

    public function key()
    {
        return $this->dataStreams()[$this->currentDataStream]->key();
    }

    public function next()
    {
        return $this->dataStreams()[$this->currentDataStream]->next();
    }

    public function valid()
    {
        $dataStreams = $this->dataStreams();
        if ($dataStreams[$this->currentDataStream]->valid()) {
            // current data stream is still valid
            return true;
        } else {
            ++$this->currentDataStream;
            if (isset($dataStreams[$this->currentDataStream])) {
                // current data stream is done, but we have another data stream
                return true;
            } else {
                // no more data and no more data streams
                return false;
            }
        }
    }

    public function getFileExtension()
    {
        return '';
    }

    public function save($baseFilename)
    {
        $dataStreams = $this->dataStreams();
        $numDataStreams = count($dataStreams);
        $fileNames = [];
        $i = 0;
        foreach ($dataStreams as $dataStream) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
            if ($numDataStreams == 1) {
                $filename = $baseFilename.$this->getFileExtension();
            } else {
                $filename = $baseFilename.'-data-'.$i.$this->getFileExtension();
            }
            $fileNames[] = $filename;
            $dataStream->save($filename);
            ++$i;
        }

        return $fileNames;
    }

    public static function validateDataSource($dataSource, $basePath = null)
    {
        $errors = [];
        $dataSource = static::normalizeDataSource($dataSource, $basePath);
        if (!Utils::isHttpSource($dataSource) && !file_exists($dataSource)) {
            $errors[] = new ResourceValidationError(
                ResourceValidationError::SCHEMA_VIOLATION,
                "data source file does not exist or is not readable: {$dataSource}"
            );
        }

        return $errors;
    }

    /**
     * allows extending classes to add custom sources
     * used by unit tests to add a mock http source.
     *
     * @param string $dataSource
     * @param string|null $basePath
     *
     * @return string
     */
    public static function normalizeDataSource($dataSource, string $basePath = null)
    {
        if (!empty($basePath) && !Utils::isHttpSource($dataSource)) {
            // TODO: support JSON pointers
            $absPath = $basePath.DIRECTORY_SEPARATOR.$dataSource;
            if (file_exists($absPath)) {
                $dataSource = $absPath;
            }
        }

        return $dataSource;
    }

    protected $descriptor;
    protected $basePath;
    protected $skipValidations = false;
    protected $currentDataPosition = 0;
    protected $currentDataStream = 0;
    protected $dataStreams = null;

    protected function validateResource()
    {
        return ResourceValidator::validate($this->descriptor(), $this->basePath);
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
    }

    /**
     * @param string $dataSource
     *
     * @return BaseDataStream
     */
    abstract protected function getDataStream($dataSource);

    abstract protected function getInlineDataStream($data);

    protected static function handlesProfile($profile)
    {
        return false;
    }
}


1			<?php
2
3			namespace frictionlessdata\datapackage\Resources;
4
5			use frictionlessdata\datapackage\DataStreams\BaseDataStream;
6			use frictionlessdata\datapackage\Registry;
7			use frictionlessdata\datapackage\Validators\ResourceValidationError;
8			use frictionlessdata\datapackage\Validators\ResourceValidator;
9			use frictionlessdata\datapackage\Exceptions\ResourceValidationFailedException;
10			use frictionlessdata\datapackage\Utils;
11
12			abstract class BaseResource implements \Iterator
13			{
14
15			/**
16			* BaseResource constructor.
17			*
18			* @param object $descriptor
19			* @param null\|string $basePath
20			*
21			* @param bool $skipValidations
22			*
23			* @throws \frictionlessdata\datapackage\Exceptions\ResourceValidationFailedException
24			*/
25			public function __construct($descriptor, $basePath, $skipValidations = false)
26			{
27			$this->basePath = $basePath;
28			$this->descriptor = Utils::objectify($descriptor);
29			$this->skipValidations = $skipValidations;
30			if (!$this->skipValidations) {
31			$validationErrors = $this->validateResource();
32			if (count($validationErrors) > 0) {
33			throw new ResourceValidationFailedException($validationErrors);
34			}
35			}
36			}
37
38			public static function handlesDescriptor($descriptor)
39			{
40			return static::handlesProfile(Registry::getResourceValidationProfile($descriptor));
41			}
42
43			public function read($readOptions = null)
44			{
45			$limit = ($readOptions && isset($readOptions['limit'])) ? $readOptions['limit'] : null;
46			$rows = [];
47			foreach ($this->dataStreams() as $dataStream) {
			0 ignored issues – show Bug introduced 2021-04-25 07:11 UTC by Report Bug Copy Issue Report The expression `$this->dataStreams()` of type `array<integer,object<fri...s\BaseDataStream>>\|null` is not guaranteed to be traversable. How about adding an additional type check? There are different options of fixing this problem. If you want to be on the safe side, you can add an additional type-check: $collection = json_decode($data, true); if ( ! is_array($collection)) { throw new \RuntimeException('$collection must be an array.'); } foreach ($collection as $item) { /** ... / } If you are sure that the expression is traversable, you might want to add a doc comment cast* to improve IDE auto-completion and static analysis: /** @var array $collection / $collection = json_decode($data, true); foreach ($collection as $item) { /* .. / } Mark the issue as a false-positive*: Just hover the remove button, in the top-right corner of this issue for more options. Loading history...
48			if (isset($dataStream->table)) {
49			$readOptions['limit'] = $limit;
50			foreach ($dataStream->table->read($readOptions) as $row) {
51			$rows[] = $row;
52			if ($limit !== null) {
53			--$limit;
54			if ($limit < 0) {
55			break;
56			}
57			}
58			}
59			} else {
60			foreach ($dataStream as $row) {
61			$rows[] = $row;
62			if ($limit !== null) {
63			--$limit;
64			if ($limit < 0) {
65			break;
66			}
67			}
68			}
69			}
70			if ($limit !== null && $limit < 0) {
71			break;
72			}
73			}
74
75			return $rows;
76			}
77
78			/**
79			* Loads $this->dataStreams based on $this->path() and $this->data
80			* @return BaseDataStream[]\|null
81			*/
82			public function dataStreams()
83			{
84			if (is_null($this->dataStreams)) {
85			$this->dataStreams = [];
86			foreach ($this->path() as $path) {
87			$this->dataStreams[] = $this->getDataStream($path);
88			}
89			$data = $this->data();
90			if ($data) {
91			$this->dataStreams[] = $this->getInlineDataStream($data);
92			}
93			}
94
95			return $this->dataStreams;
96			}
97
98			/**
99			* @return object
100			*/
101			public function descriptor()
102			{
103			return $this->descriptor;
104			}
105
106			/**
107			* @return string
108			*/
109			public function name()
110			{
111			return $this->descriptor()->name;
112			}
113
114			public function path()
115			{
116			if (isset($this->descriptor()->path)) {
117			$path = $this->descriptor()->path;
118			if (!is_array($path)) {
119			$path = [$path];
120			}
121
122			return $path;
123			} else {
124			return [];
125			}
126			}
127
128			/**
129			* If the resource's $path is local (non-http)
130			* @return bool
131			*/
132			public function isLocal()
133			{
134			return !$this->isRemote();
135			}
136
137			/**
138			* If the resource's $path is remote (http)
139			* @return bool
140			*/
141			public function isRemote()
142			{
143			$path = $this->path();
144			return Utils::isHttpSource(is_array($path) && count($path) > 0 ? $path[0] : $path);
145			}
146
147			public function data()
148			{
149			return isset($this->descriptor()->data) ? $this->descriptor()->data : null;
150			}
151
152			// standard iterator functions - to iterate over the data sources
153			public function rewind()
154			{
155			$this->dataStreams = null;
156			$this->currentDataStream = 0;
157			foreach ($this->dataStreams() as $dataStream) {
			0 ignored issues – show Bug introduced 2021-04-25 07:11 UTC by Report Bug Copy Issue Report The expression `$this->dataStreams()` of type `array<integer,object<fri...s\BaseDataStream>>\|null` is not guaranteed to be traversable. How about adding an additional type check? There are different options of fixing this problem. If you want to be on the safe side, you can add an additional type-check: $collection = json_decode($data, true); if ( ! is_array($collection)) { throw new \RuntimeException('$collection must be an array.'); } foreach ($collection as $item) { /** ... / } If you are sure that the expression is traversable, you might want to add a doc comment cast* to improve IDE auto-completion and static analysis: /** @var array $collection / $collection = json_decode($data, true); foreach ($collection as $item) { /* .. / } Mark the issue as a false-positive*: Just hover the remove button, in the top-right corner of this issue for more options. Loading history...
158			$dataStream->rewind();
159			}
160			}
161
162			public function current()
163			{
164			return $this->dataStreams()[$this->currentDataStream]->current();
165			}
166
167			public function key()
168			{
169			return $this->dataStreams()[$this->currentDataStream]->key();
170			}
171
172			public function next()
173			{
174			return $this->dataStreams()[$this->currentDataStream]->next();
175			}
176
177			public function valid()
178			{
179			$dataStreams = $this->dataStreams();
180			if ($dataStreams[$this->currentDataStream]->valid()) {
181			// current data stream is still valid
182			return true;
183			} else {
184			++$this->currentDataStream;
185			if (isset($dataStreams[$this->currentDataStream])) {
186			// current data stream is done, but we have another data stream
187			return true;
188			} else {
189			// no more data and no more data streams
190			return false;
191			}
192			}
193			}
194
195			public function getFileExtension()
196			{
197			return '';
198			}
199
200			public function save($baseFilename)
201			{
202			$dataStreams = $this->dataStreams();
203			$numDataStreams = count($dataStreams);
204			$fileNames = [];
205			$i = 0;
206			foreach ($dataStreams as $dataStream) {
			0 ignored issues – show Bug introduced 2021-04-25 07:11 UTC by Report Bug Copy Issue Report The expression `$dataStreams` of type `array<integer,object<fri...s\BaseDataStream>>\|null` is not guaranteed to be traversable. How about adding an additional type check? There are different options of fixing this problem. If you want to be on the safe side, you can add an additional type-check: $collection = json_decode($data, true); if ( ! is_array($collection)) { throw new \RuntimeException('$collection must be an array.'); } foreach ($collection as $item) { /** ... / } If you are sure that the expression is traversable, you might want to add a doc comment cast* to improve IDE auto-completion and static analysis: /** @var array $collection / $collection = json_decode($data, true); foreach ($collection as $item) { /* .. / } Mark the issue as a false-positive*: Just hover the remove button, in the top-right corner of this issue for more options. Loading history...
207			if ($numDataStreams == 1) {
208			$filename = $baseFilename.$this->getFileExtension();
209			} else {
210			$filename = $baseFilename.'-data-'.$i.$this->getFileExtension();
211			}
212			$fileNames[] = $filename;
213			$dataStream->save($filename);
214			++$i;
215			}
216
217			return $fileNames;
218			}
219
220			public static function validateDataSource($dataSource, $basePath = null)
221			{
222			$errors = [];
223			$dataSource = static::normalizeDataSource($dataSource, $basePath);
224			if (!Utils::isHttpSource($dataSource) && !file_exists($dataSource)) {
225			$errors[] = new ResourceValidationError(
226			ResourceValidationError::SCHEMA_VIOLATION,
227			"data source file does not exist or is not readable: {$dataSource}"
228			);
229			}
230
231			return $errors;
232			}
233
234			/**
235			* allows extending classes to add custom sources
236			* used by unit tests to add a mock http source.
237			*
238			* @param string $dataSource
239			* @param string\|null $basePath
240			*
241			* @return string
242			*/
243			public static function normalizeDataSource($dataSource, string $basePath = null)
244			{
245			if (!empty($basePath) && !Utils::isHttpSource($dataSource)) {
246			// TODO: support JSON pointers
247			$absPath = $basePath.DIRECTORY_SEPARATOR.$dataSource;
248			if (file_exists($absPath)) {
249			$dataSource = $absPath;
250			}
251			}
252
253			return $dataSource;
254			}
255
256			protected $descriptor;
257			protected $basePath;
258			protected $skipValidations = false;
259			protected $currentDataPosition = 0;
260			protected $currentDataStream = 0;
261			protected $dataStreams = null;
262
263			protected function validateResource()
264			{
265			return ResourceValidator::validate($this->descriptor(), $this->basePath);
			0 ignored issues – show Bug introduced 2021-02-24 01:30 UTC by Report Bug Copy Issue Report It seems like `$this->basePath` can also be of type `string`; however, `frictionlessdata\datapac...seValidator::validate()` does only seem to accept `null`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
266			}
267
268			/**
269			* @param string $dataSource
270			*
271			* @return BaseDataStream
272			*/
273			abstract protected function getDataStream($dataSource);
274
275			abstract protected function getInlineDataStream($data);
276
277			protected static function handlesProfile($profile)
278			{
279			return false;
280			}
281			}
282

frictionlessdata / datapackage-php

Push — master ( 48e73f...b60bd4 )

BaseResource::rewind() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like