Statement::offset() - Code Metrics - Inspection of "Implementing 9.0 Public API" - thephpleague/csv - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#210)

by ignace nyamagana

created 2017-02-16 10:10 UTC

Statement::offset() A

↳ Parent: Statement

Complexity

Conditions	2
Paths	2

Size

Total Lines	12
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	12
ccs	7
cts	7
cp	1
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	7
nc	2
nop	1
crap	2

<?php
/**
* This file is part of the League.csv library
*
* @license http://opensource.org/licenses/MIT
* @link https://github.com/thephpleague/csv/
* @version 9.0.0
* @package League.csv
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);

namespace League\Csv;

use ArrayIterator;
use CallbackFilterIterator;
use Iterator;
use LimitIterator;

/**
 *  A trait to manage filtering a CSV
 *
 * @package League.csv
 * @since   9.0.0
 * @author  Ignace Nyamagana Butera <[email protected]>
 *
 */
class Statement
{
    use ValidatorTrait;

    /**
     * Callables to filter the iterator
     *
     * @var callable[]
     */
    protected $where = [];

    /**
     * Callables to sort the iterator
     *
     * @var callable[]
     */
    protected $order_by = [];

    /**
     * iterator Offset
     *
     * @var int
     */
    protected $offset = 0;

    /**
     * iterator maximum length
     *
     * @var int
     */
    protected $limit = -1;

    /**
     * CSV headers
     *
     * @var string[]
     */
    protected $header = [];

    /**
     * Set LimitIterator Offset
     *
     * @param $offset
     *
     * @return self
     */
    public function offset(int $offset = 0): self
    {
        $offset = $this->filterInteger($offset, 0, 'the offset must be a positive integer or 0');
        if ($offset === $this->offset) {
            return $this;
        }

        $clone = clone $this;
        $clone->offset = $offset;

        return $clone;
    }

    /**
     * Set LimitIterator Count
     *
     * @param int $limit
     *
     * @return self
     */
    public function limit(int $limit = -1): self
    {
        $limit = $this->filterInteger($limit, -1, 'the limit must an integer greater or equals to -1');
        if ($limit === $this->limit) {
            return $this;
        }

        $clone = clone $this;
        $clone->limit = $limit;

        return $clone;
    }

    /**
     * Set an Iterator sorting callable function
     *
     * @param callable $callable
     *
     * @return self
     */
    public function orderBy(callable $callable): self
    {
        $clone = clone $this;
        $clone->order_by[] = $callable;

        return $clone;
    }

    /**
     * Set the Iterator filter method
     *
     * @param callable $callable
     *
     * @return self
     */
    public function where(callable $callable): self
    {
        $clone = clone $this;
        $clone->where[] = $callable;

        return $clone;
    }

    /**
     * Set the headers to be used by the RecordSet object
     *
     * @param string[] $header
     *
     * @return self
     */
    public function header(array $header): self
    {
        $header = $this->filterHeader($header);
        if ($header === $this->header) {
            return $this;
        }

        $clone = clone $this;
        $clone->header = $header;

        return $clone;
    }

    /**
     * Returns the inner CSV Document Iterator object
     *
     * @param Reader $reader
     *
     * @return RecordSet
     */
    public function process(Reader $reader): RecordSet
    {
        list($header, $iterator) = $this->combineHeader($reader);
        $iterator = $this->filterRecords($iterator);
        $iterator = $this->orderRecords($iterator);

        return new RecordSet(new LimitIterator($iterator, $this->offset, $this->limit), $header);
    }

    /**
     * Add the CSV header if present
     *
     * @param Reader $reader
     *
     * @return array
     */
    protected function combineHeader(Reader $reader): array
    {
        $iterator = $reader->getIterator();
        if (empty($this->header)) {
            return [$reader->getHeader(), $iterator];
        }

        $header_count = count($this->header);
        $combine = function (array $row) use ($header_count): array {
            if ($header_count != count($row)) {
                $row = array_slice(array_pad($row, $header_count, null), 0, $header_count);
            }

            return array_combine($this->header, $row);
        };

        return [$this->header, new MapIterator($iterator, $combine)];

    }

    /**
    * Filter the Iterator
    *
    * @param Iterator $iterator
    *
    * @return Iterator
    */
    protected function filterRecords(Iterator $iterator): Iterator
    {
        $reducer = function (Iterator $iterator, callable $callable) {
            return new CallbackFilterIterator($iterator, $callable);
        };

        return array_reduce($this->where, $reducer, $iterator);
    }

    /**
    * Sort the Iterator
    *
    * @param Iterator $iterator
    *
    * @return Iterator
    */
    protected function orderRecords(Iterator $iterator): Iterator
    {
        if (empty($this->order_by)) {
            return $iterator;
        }

        $obj = new ArrayIterator(iterator_to_array($iterator, true));
        $obj->uasort(function (array $record_a, array $record_b): int {
            $res = 0;
            foreach ($this->order_by as $compare) {
                if (0 !== ($res = $compare($record_a, $record_b))) {
                    break;
                }
            }

            return $res;
        });

        return $obj;
    }
}


1		<?php
2		/**
3		* This file is part of the League.csv library
4		*
5		* @license http://opensource.org/licenses/MIT
6		* @link https://github.com/thephpleague/csv/
7		* @version 9.0.0
8		* @package League.csv
9		*
10		* For the full copyright and license information, please view the LICENSE
11		* file that was distributed with this source code.
12		*/
13		declare(strict_types=1);
14
15		namespace League\Csv;
16
17		use ArrayIterator;
18		use CallbackFilterIterator;
19		use Iterator;
20		use LimitIterator;
21
22		/**
23		* A trait to manage filtering a CSV
24		*
25		* @package League.csv
26		* @since 9.0.0
27		* @author Ignace Nyamagana Butera <[email protected]>
28		*
29		*/
30		class Statement
31		{
32		use ValidatorTrait;
33
34		/**
35		* Callables to filter the iterator
36		*
37		* @var callable[]
38		*/
39		protected $where = [];
40
41		/**
42		* Callables to sort the iterator
43		*
44		* @var callable[]
45		*/
46		protected $order_by = [];
47
48		/**
49		* iterator Offset
50		*
51		* @var int
52		*/
53		protected $offset = 0;
54
55		/**
56		* iterator maximum length
57		*
58		* @var int
59		*/
60		protected $limit = -1;
61
62		/**
63		* CSV headers
64		*
65		* @var string[]
66		*/
67		protected $header = [];
68
69		/**
70		* Set LimitIterator Offset
71		*
72		* @param $offset
73		*
74		* @return self
75		*/
76	12	public function offset(int $offset = 0): self
77		{
78	12	$offset = $this->filterInteger($offset, 0, 'the offset must be a positive integer or 0');
79	12	if ($offset === $this->offset) {
80	2	return $this;
81		}
82
83	10	$clone = clone $this;
84	10	$clone->offset = $offset;
85
86	10	return $clone;
87		}
88
89		/**
90		* Set LimitIterator Count
91		*
92		* @param int $limit
93		*
94		* @return self
95		*/
96	16	public function limit(int $limit = -1): self
97		{
98	16	$limit = $this->filterInteger($limit, -1, 'the limit must an integer greater or equals to -1');
99	14	if ($limit === $this->limit) {
100	2	return $this;
101		}
102
103	12	$clone = clone $this;
104	12	$clone->limit = $limit;
105
106	12	return $clone;
107		}
108
109		/**
110		* Set an Iterator sorting callable function
111		*
112		* @param callable $callable
113		*
114		* @return self
115		*/
116	2	public function orderBy(callable $callable): self
117		{
118	2	$clone = clone $this;
119	2	$clone->order_by[] = $callable;
120
121	2	return $clone;
122		}
123
124		/**
125		* Set the Iterator filter method
126		*
127		* @param callable $callable
128		*
129		* @return self
130		*/
131	2	public function where(callable $callable): self
132		{
133	2	$clone = clone $this;
134	2	$clone->where[] = $callable;
135
136	2	return $clone;
137		}
138
139		/**
140		* Set the headers to be used by the RecordSet object
141		*
142		* @param string[] $header
143		*
144		* @return self
145		*/
146	18	public function header(array $header): self
147		{
148	18	$header = $this->filterHeader($header);
149	16	if ($header === $this->header) {
150	2	return $this;
151		}
152
153	14	$clone = clone $this;
154	14	$clone->header = $header;
155
156	14	return $clone;
157		}
158
159		/**
160		* Returns the inner CSV Document Iterator object
161		*
162		* @param Reader $reader
163		*
164		* @return RecordSet
165		*/
166	108	public function process(Reader $reader): RecordSet
167		{
168	108	list($header, $iterator) = $this->combineHeader($reader);
169	106	$iterator = $this->filterRecords($iterator);
170	106	$iterator = $this->orderRecords($iterator);
171
172	106	return new RecordSet(new LimitIterator($iterator, $this->offset, $this->limit), $header);
173		}
174
175		/**
176		* Add the CSV header if present
177		*
178		* @param Reader $reader
179		*
180		* @return array
181		*/
182	108	protected function combineHeader(Reader $reader): array
183		{
184	108	$iterator = $reader->getIterator();
185	106	if (empty($this->header)) {
186	92	return [$reader->getHeader(), $iterator];
187		}
188
189	14	$header_count = count($this->header);
190		$combine = function (array $row) use ($header_count): array {
191	10	if ($header_count != count($row)) {
192	4	$row = array_slice(array_pad($row, $header_count, null), 0, $header_count);
193		}
194
195	10	return array_combine($this->header, $row);
196	14	};
197
198	14	return [$this->header, new MapIterator($iterator, $combine)];
		0 ignored issues – show Compatibility introduced 2017-02-16 10:16 UTC by Report Bug Copy Issue Report `$iterator` of type `object<Traversable>` is not a sub-type of `object<Iterator>`. It seems like you assume a child interface of the interface `Traversable` to be always present. This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass. Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type. Loading history...
199		}
200
201		/**
202		* Filter the Iterator
203		*
204		* @param Iterator $iterator
205		*
206		* @return Iterator
207		*/
208	106	protected function filterRecords(Iterator $iterator): Iterator
209		{
210		$reducer = function (Iterator $iterator, callable $callable) {
211	2	return new CallbackFilterIterator($iterator, $callable);
212	106	};
213
214	106	return array_reduce($this->where, $reducer, $iterator);
215		}
216
217		/**
218		* Sort the Iterator
219		*
220		* @param Iterator $iterator
221		*
222		* @return Iterator
223		*/
224	106	protected function orderRecords(Iterator $iterator): Iterator
225		{
226	106	if (empty($this->order_by)) {
227	104	return $iterator;
228		}
229
230	2	$obj = new ArrayIterator(iterator_to_array($iterator, true));
231	2	$obj->uasort(function (array $record_a, array $record_b): int {
232	2	$res = 0;
233	2	foreach ($this->order_by as $compare) {
234	2	if (0 !== ($res = $compare($record_a, $record_b))) {
235	2	break;
236		}
237		}
238
239	2	return $res;
240	2	});
241
242	2	return $obj;
243		}
244		}
245

thephpleague / csv

Pull Request — master (#210)

Statement::offset() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like