StepExpression::resolveSteps() - Code Metrics - Inspection of "add --step/s option" - ktomk/pipelines - Measure and Improve Code Quality continuously with Scrutinizer

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Push — steps ( c7b5f4...d19fba )

by Tom

created 2020-03-08 01:49 UTC

StepExpression::resolveSteps() A

↳ Parent: StepExpression

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
cc	2
eloc	5
nc	2
nop	1
dl	0
loc	9
ccs	6
cts	6
cp	1
crap	2
rs	10
c	1
b	0
f	1

<?php

/* this file is part of pipelines */

namespace Ktomk\Pipelines\Value;

use Ktomk\Pipelines\File\Pipeline\Steps;
use Ktomk\Pipelines\Lib;

/**
 * Class StepExpression
 *
 * @package Ktomk\Pipelines\Value
 */
class StepExpression
{
    /**
     * @var array 1-3, -5, 1-
     */
    private $segments;

    /**
     * @param string $expression
     *
     * @return StepExpression
     */
    public static function createFromString($expression)
    {
        return new self(self::parseSegments($expression));
    }

    /**
     * Is a step expression syntactically valid?
     *
     * @param string $expression
     *
     * @return bool
     */
    public static function validate($expression)
    {
        try {
            self::parseSegments($expression);
        } catch (\InvalidArgumentException $ex) {
            return false;
        }

        return true;
    }

    /**
     * NOTE: this static function needs to be public for PHP backwards compat
     *
     * @param $segment
     * @param $count
     *
     * @return array|int[]
     * @see resolveSegmentFunctor
     *
     */
    public static function resolveSegmentCount($segment, $count)
    {
        $pos = strpos($segment, '-');
        list($from, $to) = explode('-', $segment, 2) + array('', '');

        if (false === $pos) {
            return array(self::verifyValueCount((int)Lib::emptyCoalesce($from, $to), $count));
        }

        if (empty($to)) {
            return range(self::verifyValueCount($from, $count), $count);
        }

        if (empty($from)) {
            return range(self::verifyValueCount(1, $count), self::verifyValueCount($to, $count));
        }

        return range(self::verifyValueCount($from, $count), self::verifyValueCount($to, $count));
    }

    /**
     * StepExpression constructor.
     *
     * @param array $segments
     */
    public function __construct(array $segments)
    {
        $this->segments = $segments;
    }

    /**
     * @return array
     */
    public function getSegments()
    {
        return $this->segments;
    }

    /**
     * @param int $count
     *
     * @return array|int[]
     */
    public function resolveCount($count)
    {
        if (0 === $count || !is_int($count)) {
            throw new \InvalidArgumentException('Count is zero');
        }

        $range = Lib::merge(array_map(self::resolveSegmentFunctor($count), $this->segments));

        return call_user_func_array('array_merge', $range);
    }

    /**
     * @param mixed $countable
     *
     * @return array|int[]
     */
    public function resolveCountable($countable)
    {
        return $this->resolveCount(count($countable));
    }

    /**
     * @param Steps $steps
     * @return array|Steps[]
     */
    public function resolveSteps(Steps $steps)
    {
        $stepNumbers = $this->resolveCountable($steps);
        $array = array();
        foreach ($stepNumbers as $number) {
            $array[] = $steps[$number - 1];
        }

        return $array;
    }

    /**
     * @param $buffer
     *
     * @return array|string[]
     */
    private static function parseSegments($buffer)
    {
        $normalized = preg_replace(array('~\s+~', '~(\d+)\s+(-)~', '~(-)\s+(\d+)+~'), array(' ', '\\1\\2', '\\1\\2'), $buffer);
        if (empty($normalized)) {
            throw new \InvalidArgumentException(sprintf('No steps: "%s"', $buffer));
        }

        $result = preg_split('~\s*(?:,|\s)\s*~', $normalized, 64, PREG_SPLIT_NO_EMPTY);
        if (empty($result)) {
            throw new \InvalidArgumentException(sprintf('No steps: "%s"', $buffer));
        }

        $array = array();
        foreach ($result as $segmentBuffer) {
            $array[] = self::parseSegment($segmentBuffer);
        }

        return $array;
    }

    /**
     * Parse (better: normalize) segment
     *
     * @param string $buffer
     *
     * @return string
     */
    private static function parseSegment($buffer)
    {
        $segment = preg_replace('~\s+~', '', $buffer);
        if (null === $segment) {
            // @codeCoverageIgnoreStart
            throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s"', $buffer));
            // @codeCoverageIgnoreEnd
        }

        $result = preg_match('~^(?:(?:[1-9]\d*)?-(?:[1-9]\d*)?|(?:[1-9]\d*))$~', $segment);
        if (false === $result || 0 === $result || '-' === $segment) {
            if ($buffer !== $segment) {
                // @codeCoverageIgnoreStart
                throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s" (from "%s")', $segment, $buffer));
                // @codeCoverageIgnoreEnd
            }

            throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s"', $segment));
        }

        return $segment;
    }

    /**
     * @param int $count
     *
     * @return \Closure
     */
    private static function resolveSegmentFunctor($count)
    {
        return function ($segment) use ($count) {
            return StepExpression::resolveSegmentCount($segment, $count);
        };
    }

    /**
     * @param int $value
     * @param int $count
     *
     * @return int
     */
    private static function verifyValueCount($value, $count)
    {
        if ($value > $count) {
            throw new \InvalidArgumentException(sprintf('step %d is out of range, highest is %d', $value, $count));
        }

        return $value;
    }
}


1		<?php
2
3		/* this file is part of pipelines */
4
5		namespace Ktomk\Pipelines\Value;
6
7		use Ktomk\Pipelines\File\Pipeline\Steps;
8		use Ktomk\Pipelines\Lib;
9
10		/**
11		* Class StepExpression
12		*
13		* @package Ktomk\Pipelines\Value
14		*/
15		class StepExpression
16		{
17		/**
18		* @var array 1-3, -5, 1-
19		*/
20		private $segments;
21
22		/**
23		* @param string $expression
24		*
25		* @return StepExpression
26		*/
27	32	public static function createFromString($expression)
28		{
29	32	return new self(self::parseSegments($expression));
30		}
31
32		/**
33		* Is a step expression syntactically valid?
34		*
35		* @param string $expression
36		*
37		* @return bool
38		*/
39	14	public static function validate($expression)
40		{
41		try {
42	14	self::parseSegments($expression);
43	4	} catch (\InvalidArgumentException $ex) {
44	4	return false;
45		}
46
47	10	return true;
48		}
49
50		/**
51		* NOTE: this static function needs to be public for PHP backwards compat
52		*
53		* @param $segment
54		* @param $count
55		*
56		* @return array\|int[]
57		* @see resolveSegmentFunctor
58		*
59		*/
60	13	public static function resolveSegmentCount($segment, $count)
61		{
62	13	$pos = strpos($segment, '-');
63	13	list($from, $to) = explode('-', $segment, 2) + array('', '');
64
65	13	if (false === $pos) {
66	5	return array(self::verifyValueCount((int)Lib::emptyCoalesce($from, $to), $count));
67		}
68
69	8	if (empty($to)) {
70	3	return range(self::verifyValueCount($from, $count), $count);
71		}
72
73	7	if (empty($from)) {
74	3	return range(self::verifyValueCount(1, $count), self::verifyValueCount($to, $count));
75		}
76
77	4	return range(self::verifyValueCount($from, $count), self::verifyValueCount($to, $count));
78		}
79
80		/**
81		* StepExpression constructor.
82		*
83		* @param array $segments
84		*/
85	25	public function __construct(array $segments)
86		{
87	25	$this->segments = $segments;
88	25	}
89
90		/**
91		* @return array
92		*/
93	10	public function getSegments()
94		{
95	10	return $this->segments;
96		}
97
98		/**
99		* @param int $count
100		*
101		* @return array\|int[]
102		*/
103	14	public function resolveCount($count)
104		{
105	14	if (0 === $count \|\| !is_int($count)) {
106	1	throw new \InvalidArgumentException('Count is zero');
107		}
108
109	13	$range = Lib::merge(array_map(self::resolveSegmentFunctor($count), $this->segments));
110
111	11	return call_user_func_array('array_merge', $range);
112		}
113
114		/**
115		* @param mixed $countable
116		*
117		* @return array\|int[]
118		*/
119	13	public function resolveCountable($countable)
120		{
121	13	return $this->resolveCount(count($countable));
122		}
123
124		/**
125		* @param Steps $steps
126		* @return array\|Steps[]
127		*/
128	1	public function resolveSteps(Steps $steps)
129		{
130	1	$stepNumbers = $this->resolveCountable($steps);
131	1	$array = array();
132	1	foreach ($stepNumbers as $number) {
133	1	$array[] = $steps[$number - 1];
134		}
135
136	1	return $array;
137		}
138
139		/**
140		* @param $buffer
141		*
142		* @return array\|string[]
143		*/
144	46	private static function parseSegments($buffer)
145		{
146	46	$normalized = preg_replace(array('~\s+~', '~(\d+)\s+(-)~', '~(-)\s+(\d+)+~'), array(' ', '\\1\\2', '\\1\\2'), $buffer);
147	46	if (empty($normalized)) {
148	3	throw new \InvalidArgumentException(sprintf('No steps: "%s"', $buffer));
149		}
150
151	43	$result = preg_split('~\s(?:,\|\s)\s~', $normalized, 64, PREG_SPLIT_NO_EMPTY);
152	43	if (empty($result)) {
153	2	throw new \InvalidArgumentException(sprintf('No steps: "%s"', $buffer));
154		}
155
156	41	$array = array();
157	41	foreach ($result as $segmentBuffer) {
158	41	$array[] = self::parseSegment($segmentBuffer);
159		}
160
161	34	return $array;
162		}
163
164		/**
165		* Parse (better: normalize) segment
166		*
167		* @param string $buffer
168		*
169		* @return string
170		*/
171	41	private static function parseSegment($buffer)
172		{
173	41	$segment = preg_replace('~\s+~', '', $buffer);
174	41	if (null === $segment) {
175		// @codeCoverageIgnoreStart
176		throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s"', $buffer));
177		// @codeCoverageIgnoreEnd
178		}
179
180	41	$result = preg_match('~^(?:(?:[1-9]\d)?-(?:[1-9]\d)?\|(?:[1-9]\d*))$~', $segment);
181	41	if (false === $result \|\| 0 === $result \|\| '-' === $segment) {
182	7	if ($buffer !== $segment) {
183		// @codeCoverageIgnoreStart
184		throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s" (from "%s")', $segment, $buffer));
185		// @codeCoverageIgnoreEnd
186		}
187
188	7	throw new \InvalidArgumentException(sprintf('Can not parse step segment for "%s"', $segment));
189		}
190
191	34	return $segment;
192		}
193
194		/**
195		* @param int $count
196		*
197		* @return \Closure
198		*/
199		private static function resolveSegmentFunctor($count)
200		{
201	13	return function ($segment) use ($count) {
202	13	return StepExpression::resolveSegmentCount($segment, $count);
203	13	};
204		}
205
206		/**
207		* @param int $value
208		* @param int $count
209		*
210		* @return int
211		*/
212	13	private static function verifyValueCount($value, $count)
213		{
214	13	if ($value > $count) {
215	2	throw new \InvalidArgumentException(sprintf('step %d is out of range, highest is %d', $value, $count));
216		}
217
218	12	return $value;
219		}
220		}
221

ktomk / pipelines

Push — steps ( c7b5f4...d19fba )

StepExpression::resolveSteps() A

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