functions.php ➔ get_range_start_end() - Code Metrics - Inspection of "Began working on List collection - refs #47" - nozavroni/collections - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Push — features/47-laravelmethods ( eb62da...02a3bd )

by Luke

created 2017-01-09 00:33 UTC

functions.php ➔ get_range_start_end() B

↳ Parent: Project

Complexity

Conditions	5
Paths	9

Size

Total Lines	21
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	15
CRAP Score	5.0061

Importance

Changes

Metric	Value
cc	5
eloc	14
nc	9
nop	2
dl	0
loc	21
ccs	15
cts	16
cp	0.9375
crap	5.0061
rs	8.7624
c	0
b	0
f	0

<?php
/*
 * Nozavroni/Collections
 * Just another collections library for PHP5.6+.
 *
 * @copyright Copyright (c) 2016 Luke Visinoni <[email protected]>
 * @author    Luke Visinoni <[email protected]>
 * @license   https://github.com/nozavroni/collections/blob/master/LICENSE The MIT License (MIT)
 */
namespace Noz;

use Closure;
use Illuminate\Support\Str;
use InvalidArgumentException;
use Iterator;
use Noz\Collection\Collection;
use Noz\Collection\Sequence;
use Noz\Contracts\CollectionInterface;
use RuntimeException;
use Traversable;

/**
 * Collection factory.
 *
 * Simply an alias to (new Collection($in)). Allows for a little more concise and
 * simpler instantiation of a collection. Also I plan to eventually support
 * additional input types that will make this function more flexible and forgiving
 * than simply instantiating a Collection object, but for now the two are identical.
 *
 * @param array|Iterator $data Either an array or an iterator of data
 *
 * @return CollectionInterface

 */
function collect($data = null)
{
    return Collection::factory($data);
}

/**
 * Invoke a callable and return result.
 *
 * Pass in a callable followed by whatever arguments you want passed to
 * it and this function will invoke it with your arguments and return
 * the result.
 *
 * @param callable $callback The callback function to invoke
 * @param array ...$args     The args to pass to your callable
 *
 * @return mixed The result of your invoked callable
 */
function invoke(callable $callback, ...$args)
{
    return call_user_func($callback, ...$args);
}

/**
 * Underscore function.

 * This function is meant to work sort of like jQuery's "$()". It is a contextual catch-all type function. It works
 * as a short-hand alias for invoke, collect, and with.

 * @param callable|mixed    $in
 * @param mixed ...         $_
 *
 * @return mixed|CollectionInterface
 */
function _($in, ...$args)
{
    if (is_callable($in)) {
        return invoke($in, ...$args);
    }
    if (is_traversable($in)) {
        return collect($in);
    }
    return $in;
}

/**
 * Determine if data is traversable.
 *
 * Pass in any variable and this function will tell you whether or not it
 * is traversable. Basically this just means that it is either an array or an iterator.
 * This function was written simply because I was tired of if statements that checked
 * whether a variable was an array or a descendant of \Iterator. So I wrote this guy.
 *
 * @param mixed $data The variable to determine traversability
 *
 * @return bool True if $input is an array or an Iterator
 */
function is_traversable($data)
{
    return is_array($data) || $data instanceof Traversable;
}

/**
 * Can data be converted to an array?
 *
 * @param mixed $data The data to check
 *
 * @return bool
 */
function is_arrayable($data)
{
    if (!is_array($data)) {
        if (is_object($data)) {
            return (
                method_exists($data, 'toArray') ||
                $data instanceof Traversable
            );
        }
        return false;
    }
    return true;
}

/**
 * Convert any traversable to an array.
 *
 * @todo I'm not sure if this function is necessary or not. Does iterator_to_array do everything this can do?
 *
 * @param Traversable $data Traversable data
 *
 * @return array
 */
function traversable_to_array(Traversable $data)
{
    $arr = [];
    foreach ($data as $key => $val) {
        $arr[$key] = $val;
    }
    return $arr;
}

/**
 * Convert data to an array.
 *
 * Accepts any kind of data and converts it to an array. If strict mode is on, only data that returns true from
 * is_arrayable() will be converted to an array. Anything else will cause an InvalidArgumentException to be thrown.

 * @param mixed $data   Data to convert to array
 * @param bool  $strict Whether to use strict mode

 * @return array
 *
 * @throws InvalidArgumentException
 */
function to_array($data, $strict = true)
{
    if (is_arrayable($data)) {
        if (is_array($data)) {
            return $data;
        }
        // this is what makes toArray() work recursively
        // it must stay right where it is do not move it
        if (method_exists($data, 'toArray')) {
            return $data->toArray();
        }
        if ($data instanceof Traversable) {
            return traversable_to_array($data);
        }
    }
    if ($strict) {
        throw new InvalidArgumentException(sprintf(
            'Invalid argument for "%s". Cannot convert "%s" to an array.',
            __FUNCTION__,
            typeof($data)
        ));
    }
    if (is_object($data)) {
        $values = [];
        foreach ($data as $key => $val) {
            $values[$key] = $val;
        }
        return $values;
    }
    if (is_null($data)) {
        return [];
    }
    return [$data];
}

/**
 * Get object count.
 *
 * This function will accept any data and attempt to return its count.
 *
 * @param mixed $data The data to count
 *
 * @return int
 */
function get_count($data)
{
    if (is_null($data)) {
        return $data;
    }

    if (is_array($data)) {
        return count($data);
    }

    if (is_numeric($data)) {
        return (int) $data;
    }

    if ($data === '') {
        return 0;
    }

    if ($data === 0) {
        return 0;
    }

    if (is_object($data)) {
        if (method_exists($data, 'count')) {
            $count = $data->count();
        } elseif (method_exists($data, '__toString')) {
            $count = (string) $data;
            $count = (int) $count;
        } elseif (is_traversable($data)) {
            $count = 0;
            foreach ($data as $item) {
                $count++;
            }
            return (int) $count;
        }
        if (isset($count)) {
            return (int) $count;
        }
    }

    throw new RuntimeException('Cannot convert to int.');
}

/**
 * Normalize offset to positive integer.
 *
 * Provided with the requested offset, whether it be a string, an integer (positive or negative), or some type of
 * object, this function will normalize it to a positive integer offset or, failing that, it will throw an exception.
 * A negative offset will require either the traversable that is being indexed or its total count in order to normalize

 * @param int|mixed $offset The offset to normalize
 * @param int|array|traversable $count  Either the traversable count, or the traversable itself.

 * @return int

 * @throws RuntimeException If offset cannot be normalized
 * @throws InvalidArgumentException If offset is negative and count is not provided
 */
function normalize_offset($offset, $count = null)
{
    if (is_object($offset) && method_exists($offset, '__toString')) {
        $offset = (string) $offset;
    }

    if (!is_numeric($offset)) {
        throw new RuntimeException('Invalid offset.');
    }

    $count = get_count($count);

    if ($offset < 0) {
        if (is_null($count)) {
            throw new InvalidArgumentException('Cannot normalize negative offset without a total count.');
        }
        $offset += $count;
    }
    return (int) $offset;
}

/**
 * Get range start and end from string.
 *
 * Provided a string in the format of "start:end" and the total items in a collection, this function will return an
 * array in the form of [start, length].
 *
 * @param string $range The range to get (in the format of "start:end"
 * @param int|array|traversable $count  Either the traversable count, or the traversable itself.
 *
 * @return array [start, length]
 */
function get_range_start_end($range, $count = null)
{
    $count = get_count($count);
    if (Str::contains($range, Sequence::SLICE_DELIM)) {
        // return slice as a new sequence
        list($start, $end) = explode(Sequence::SLICE_DELIM, $range, 2);
        if ($start == '') {
            $start = 0;
        }
        if ($end == '') {
            $end = $count - 1;
        }
        $start = normalize_offset($start, $count);
        $end = normalize_offset($end, $count) + 1;
        if ($end > $start) {
            $length = $end - $start;
            return [$start, $length];
        }
    }
    throw new RuntimeException('Invalid index range/offset.');
}

/**
 * Get data type.
 *
 * Inspects data to determine its type.
 *
 * @param mixed  $data       The data to check
 * @param bool   $meta       Whether to include meta data such as length/size
// * @param string $returnType What type of value to return (array or string)
/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}
 *
 * @return string
 */
function typeof($data, $meta = true/*, $returnType = 'string'*/)

{
    $type = gettype($data);
    if ($meta) {
        switch($type) {
            case 'object':
                $class = get_class($data);
                return "{$type} <{$class}>";
            case 'resource':
                $restype = get_resource_type($data);
                return "{$type} <{$restype}>";
        }
    } else {
        switch($type) {
            case 'object':
                return get_class($data);
            case 'resource':
                return get_resource_type($data);
        }
    }
    return $type;
}

// BEGIN debug/testing functions

/**
 * Dump and die.
 *
 * @param mixed $input Data to dump
 * @param bool  $exit  Should we exit after dump?
 * @param bool  $label Should we print a label?
 * @codeCoverageIgnore
 */
function dd($input, $exit = true, $label = null)
{
    if (is_null($label)) {
        $trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 1);
        $label = 'File: ';
        $label .= pathinfo($trace[0]['file'], PATHINFO_FILENAME);
        $label .= ':' . $trace[0]['line'];
        echo $label . "\n";
    } else {
        echo $label . "\n" . implode(
                array_map(
                    function () {
                        return '-';
                    },
                    str_split($label)
                )
            ) . "\n";
    }
    var_dump($input);
    echo "\n";
    if ($exit) {
        exit;
    }
}

/**
 * Exactly the same as var_dump, except that it returns its output rather than dumping it.
 */
function sdump($var)
{
    ob_start();
    var_dump($var);

    return ob_get_clean();
}

/**
 * Get object hash/checksum.
 * Using a var_dump of an object, this will return a hash that tells you if anything in your object has changed. Just
 * create a hash of an object, do some stuff with it, then create another hash of it and compare the two. If they are
 * different, teh object has changed in some way.
 *
 * @param object $obj The object to hash
 * @param string $alg The hash algorithm (supports md5 or sha1)
 *
 * @return string
 *
 * @throws InvalidArgumentException
 */
function object_hash($obj, $alg = 'md5')
{
    $algorithms = ['md5', 'sha1'];
    if (!in_array($alg, $algorithms)) {
        throw new InvalidArgumentException(sprintf(
            '"%s" is not a valid hash algorithm (%s).',
            $alg,
            implode(', ', $algorithms)
        ));
    }
    return call_user_func($alg, sdump($obj));
}


1		<?php
2		/*
3		* Nozavroni/Collections
4		* Just another collections library for PHP5.6+.
5		*
6		* @copyright Copyright (c) 2016 Luke Visinoni <[email protected]>
7		* @author Luke Visinoni <[email protected]>
8		* @license https://github.com/nozavroni/collections/blob/master/LICENSE The MIT License (MIT)
9		*/
10		namespace Noz;
11
12		use Closure;
13		use Illuminate\Support\Str;
14		use InvalidArgumentException;
15		use Iterator;
16		use Noz\Collection\Collection;
17		use Noz\Collection\Sequence;
18		use Noz\Contracts\CollectionInterface;
19		use RuntimeException;
20		use Traversable;
21
22		/**
23		* Collection factory.
24		*
25		* Simply an alias to (new Collection($in)). Allows for a little more concise and
26		* simpler instantiation of a collection. Also I plan to eventually support
27		* additional input types that will make this function more flexible and forgiving
28		* than simply instantiating a Collection object, but for now the two are identical.
29		*
30		* @param array\|Iterator $data Either an array or an iterator of data
31		*
32		* @return CollectionInterface
		0 ignored issues – show Documentation introduced 2017-01-08 01:52 UTC by Report Bug Copy Issue Report Should the return type not be `Illuminate\Support\Collection`? This check compares the return type specified in the `@return` annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch. Loading history...
33		*/
34		function collect($data = null)
35		{
36	44	return Collection::factory($data);
37		}
38
39		/**
40		* Invoke a callable and return result.
41		*
42		* Pass in a callable followed by whatever arguments you want passed to
43		* it and this function will invoke it with your arguments and return
44		* the result.
45		*
46		* @param callable $callback The callback function to invoke
47		* @param array ...$args The args to pass to your callable
48		*
49		* @return mixed The result of your invoked callable
50		*/
51		function invoke(callable $callback, ...$args)
52		{
53	7	return call_user_func($callback, ...$args);
54		}
55
56		/**
57		* Underscore function.
58
59		* This function is meant to work sort of like jQuery's "$()". It is a contextual catch-all type function. It works
60		* as a short-hand alias for invoke, collect, and with.
61
62		* @param callable\|mixed $in
63		* @param mixed ... $_
64		*
65		* @return mixed\|CollectionInterface
66		*/
67		function _($in, ...$args)
68		{
69	5	if (is_callable($in)) {
70	3	return invoke($in, ...$args);
71		}
72	2	if (is_traversable($in)) {
73	1	return collect($in);
74		}
75	1	return $in;
76		}
77
78		/**
79		* Determine if data is traversable.
80		*
81		* Pass in any variable and this function will tell you whether or not it
82		* is traversable. Basically this just means that it is either an array or an iterator.
83		* This function was written simply because I was tired of if statements that checked
84		* whether a variable was an array or a descendant of \Iterator. So I wrote this guy.
85		*
86		* @param mixed $data The variable to determine traversability
87		*
88		* @return bool True if $input is an array or an Iterator
89		*/
90		function is_traversable($data)
91		{
92	98	return is_array($data) \|\| $data instanceof Traversable;
93		}
94
95		/**
96		* Can data be converted to an array?
97		*
98		* @param mixed $data The data to check
99		*
100		* @return bool
101		*/
102		function is_arrayable($data)
103		{
104	71	if (!is_array($data)) {
105	48	if (is_object($data)) {
106		return (
107	5	method_exists($data, 'toArray') \|\|
108		$data instanceof Traversable
109	5	);
110		}
111	46	return false;
112		}
113	40	return true;
114		}
115
116		/**
117		* Convert any traversable to an array.
118		*
119		* @todo I'm not sure if this function is necessary or not. Does iterator_to_array do everything this can do?
120		*
121		* @param Traversable $data Traversable data
122		*
123		* @return array
124		*/
125		function traversable_to_array(Traversable $data)
126		{
127	3	$arr = [];
128	3	foreach ($data as $key => $val) {
129	3	$arr[$key] = $val;
130	3	}
131	3	return $arr;
132		}
133
134		/**
135		* Convert data to an array.
136		*
137		* Accepts any kind of data and converts it to an array. If strict mode is on, only data that returns true from
138		* is_arrayable() will be converted to an array. Anything else will cause an InvalidArgumentException to be thrown.
139
140		* @param mixed $data Data to convert to array
141		* @param bool $strict Whether to use strict mode
142
143		* @return array
144		*
145		* @throws InvalidArgumentException
146		*/
147		function to_array($data, $strict = true)
148		{
149	41	if (is_arrayable($data)) {
150	40	if (is_array($data)) {
151	39	return $data;
152		}
153		// this is what makes toArray() work recursively
154		// it must stay right where it is do not move it
155	3	if (method_exists($data, 'toArray')) {
156	3	return $data->toArray();
157		}
158	2	if ($data instanceof Traversable) {
159	2	return traversable_to_array($data);
160		}
161		}
162	2	if ($strict) {
163	1	throw new InvalidArgumentException(sprintf(
164	1	'Invalid argument for "%s". Cannot convert "%s" to an array.',
165	1	__FUNCTION__,
166	1	typeof($data)
167	1	));
168		}
169	1	if (is_object($data)) {
170	1	$values = [];
171	1	foreach ($data as $key => $val) {
172	1	$values[$key] = $val;
173	1	}
174	1	return $values;
175		}
176	1	if (is_null($data)) {
177	1	return [];
178		}
179	1	return [$data];
180		}
181
182		/**
183		* Get object count.
184		*
185		* This function will accept any data and attempt to return its count.
186		*
187		* @param mixed $data The data to count
188		*
189		* @return int
190		*/
191		function get_count($data)
192		{
193	11	if (is_null($data)) {
194	4	return $data;
195		}
196
197	9	if (is_array($data)) {
198	1	return count($data);
199		}
200
201	9	if (is_numeric($data)) {
202	8	return (int) $data;
203		}
204
205	4	if ($data === '') {
206	1	return 0;
207		}
208
209	4	if ($data === 0) {
210		return 0;
211		}
212
213	4	if (is_object($data)) {
214	3	if (method_exists($data, 'count')) {
215	1	$count = $data->count();
216	3	} elseif (method_exists($data, '__toString')) {
217	3	$count = (string) $data;
218	3	$count = (int) $count;
219	3	} elseif (is_traversable($data)) {
220		$count = 0;
221		foreach ($data as $item) {
222		$count++;
223		}
224		return (int) $count;
225		}
226	3	if (isset($count)) {
227	3	return (int) $count;
228		}
229		}
230
231	1	throw new RuntimeException('Cannot convert to int.');
232		}
233
234		/**
235		* Normalize offset to positive integer.
236		*
237		* Provided with the requested offset, whether it be a string, an integer (positive or negative), or some type of
238		* object, this function will normalize it to a positive integer offset or, failing that, it will throw an exception.
239		* A negative offset will require either the traversable that is being indexed or its total count in order to normalize
240
241		* @param int\|mixed $offset The offset to normalize
242		* @param int\|array\|traversable $count Either the traversable count, or the traversable itself.
243
244		* @return int
245
246		* @throws RuntimeException If offset cannot be normalized
247		* @throws InvalidArgumentException If offset is negative and count is not provided
248		*/
249		function normalize_offset($offset, $count = null)
250		{
251	10	if (is_object($offset) && method_exists($offset, '__toString')) {
252	1	$offset = (string) $offset;
253	1	}
254
255	10	if (!is_numeric($offset)) {
256	2	throw new RuntimeException('Invalid offset.');
257		}
258
259	8	$count = get_count($count);
260
261	8	if ($offset < 0) {
262	6	if (is_null($count)) {
263	1	throw new InvalidArgumentException('Cannot normalize negative offset without a total count.');
264		}
265	5	$offset += $count;
266	5	}
267	7	return (int) $offset;
268		}
269
270		/**
271		* Get range start and end from string.
272		*
273		* Provided a string in the format of "start:end" and the total items in a collection, this function will return an
274		* array in the form of [start, length].
275		*
276		* @param string $range The range to get (in the format of "start:end"
277		* @param int\|array\|traversable $count Either the traversable count, or the traversable itself.
278		*
279		* @return array [start, length]
280		*/
281		function get_range_start_end($range, $count = null)
282		{
283	5	$count = get_count($count);
284	5	if (Str::contains($range, Sequence::SLICE_DELIM)) {
285		// return slice as a new sequence
286	4	list($start, $end) = explode(Sequence::SLICE_DELIM, $range, 2);
287	4	if ($start == '') {
288	4	$start = 0;
289	4	}
290	4	if ($end == '') {
291	4	$end = $count - 1;
292	4	}
293	4	$start = normalize_offset($start, $count);
294	4	$end = normalize_offset($end, $count) + 1;
295	4	if ($end > $start) {
296	4	$length = $end - $start;
297	4	return [$start, $length];
298		}
299		}
300	1	throw new RuntimeException('Invalid index range/offset.');
301		}
302
303		/**
304		* Get data type.
305		*
306		* Inspects data to determine its type.
307		*
308		* @param mixed $data The data to check
309		* @param bool $meta Whether to include meta data such as length/size
310		// * @param string $returnType What type of value to return (array or string)
		0 ignored issues – show Bug introduced 2016-12-31 17:33 UTC by Report Bug Copy Issue Report There is no parameter named `$returnType`. Was it maybe removed? This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. Consider the following example. The parameter `$italy` is not defined by the method `finale(...)`. /** * @param array $germany * @param array $island * @param array $italy */ function finale($germany, $island) { return "2:1"; } The most likely cause is that the parameter was removed, but the annotation was not. Loading history...
311		*
312		* @return string
313		*/
314		function typeof($data, $meta = true/, $returnType = 'string'/)
		0 ignored issues – show Unused Code Comprehensibility introduced 2016-12-31 17:33 UTC by Report Bug Copy Issue Report `43%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
315		{
316	4	$type = gettype($data);
317	4	if ($meta) {
318		switch($type) {
319	4	case 'object':
320	2	$class = get_class($data);
321	2	return "{$type} <{$class}>";
322	3	case 'resource':
323	1	$restype = get_resource_type($data);
324	1	return "{$type} <{$restype}>";
325		}
326	3	} else {
327		switch($type) {
328	1	case 'object':
329	1	return get_class($data);
330	1	case 'resource':
331	1	return get_resource_type($data);
332		}
333		}
334	3	return $type;
335		}
336
337		// BEGIN debug/testing functions
338
339		/**
340		* Dump and die.
341		*
342		* @param mixed $input Data to dump
343		* @param bool $exit Should we exit after dump?
344		* @param bool $label Should we print a label?
345		* @codeCoverageIgnore
346		*/
347		function dd($input, $exit = true, $label = null)
348		{
349		if (is_null($label)) {
350		$trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 1);
351		$label = 'File: ';
352		$label .= pathinfo($trace[0]['file'], PATHINFO_FILENAME);
353		$label .= ':' . $trace[0]['line'];
354		echo $label . "\n";
355		} else {
356		echo $label . "\n" . implode(
357		array_map(
358		function () {
359		return '-';
360		},
361		str_split($label)
362		)
363		) . "\n";
364		}
365		var_dump($input);
366		echo "\n";
367		if ($exit) {
368		exit;
369		}
370		}
371
372		/**
373		* Exactly the same as var_dump, except that it returns its output rather than dumping it.
374		*/
375		function sdump($var)
376		{
377	27	ob_start();
378	27	var_dump($var);
		0 ignored issues – show Security Debugging Code introduced 2017-01-01 12:49 UTC by Report Bug Copy Issue Report `var_dump($var);` looks like debug code. Are you sure you do not want to remove it? This might expose sensitive data. Loading history...
379	27	return ob_get_clean();
380		}
381
382		/**
383		* Get object hash/checksum.
384		* Using a var_dump of an object, this will return a hash that tells you if anything in your object has changed. Just
385		* create a hash of an object, do some stuff with it, then create another hash of it and compare the two. If they are
386		* different, teh object has changed in some way.
387		*
388		* @param object $obj The object to hash
389		* @param string $alg The hash algorithm (supports md5 or sha1)
390		*
391		* @return string
392		*
393		* @throws InvalidArgumentException
394		*/
395		function object_hash($obj, $alg = 'md5')
396		{
397	27	$algorithms = ['md5', 'sha1'];
398	27	if (!in_array($alg, $algorithms)) {
399	1	throw new InvalidArgumentException(sprintf(
400	1	'"%s" is not a valid hash algorithm (%s).',
401	1	$alg,
402	1	implode(', ', $algorithms)
403	1	));
404		}
405	26	return call_user_func($alg, sdump($obj));
406		}
407

nozavroni / collections

Push — features/47-laravelmethods ( eb62da...02a3bd )

functions.php ➔ get_range_start_end() B

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