Env::__read() - Code Metrics - Inspection of ":sparkles: Env" - chillerlan/php-traits - Measure and Improve Code Quality continuously with Scrutinizer

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by smiley

created 2017-11-26 02:33 UTC

Env::__read() B

↳ Parent: Env

Complexity

Conditions	5
Paths	3

Size

Total Lines	17
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	5
eloc	9
nc	3
nop	1
dl	0
loc	17
rs	8.8571
c	0
b	0
f	0

<?php
/**
 * Trait Env
 *
 * @filesource   Env.php
 * @created      25.11.2017
 * @package      chillerlan\Traits
 * @author       Smiley <[email protected]>
 * @copyright    2017 Smiley
 * @license      MIT
 */

namespace chillerlan\Traits;

/**
 * Loads .env config files into the environment
 *
 * $_ENV > getenv()!
 *
 * @link https://github.com/vlucas/phpdotenv
 */
trait Env{

	/**
	 * @param string      $path
	 * @param string|null $filename
	 * @param bool|null   $overwrite
	 * @param array|null  $required
	 *
	 * @return $this
	 */
	protected function __loadEnv(string $path, string $filename = null, bool $overwrite = null, array $required = null){
		$overwrite = $overwrite !== null ? $overwrite : false;
		$content   = $this->__read(rtrim($path, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR.($filename ?? '.env'));

		return $this
			->__load($content, $overwrite)
			->__check($required)
		;
	}

	/**
	 * @param string $var
	 *
	 * @return bool|mixed
	 */
	protected function __getEnv(string $var){
		$var = strtoupper($var);

		if(array_key_exists($var, $_ENV)){
			return $_ENV[$var];
		}

		$val = getenv($var);

		if($val !== false){
			return $val;
		}

		if(function_exists('apache_getenv')){
			$val = apache_getenv($var);

			if($val !== false){
				return $val;
 			}

 		}

		return false;
	}

	/**
	 * @param string $var
	 * @param string $value
	 *
	 * @return $this
	 */
	protected function __setEnv(string $var, string $value = null){
		$var   = strtoupper($var);
		$value = $this->__parse($value);

		// fill $_ENV explicitly, assuming variables_order="GPCS" (production)
		$_ENV[$var] = $value;
		putenv($var.'='.$value);

		if(function_exists('apache_setenv')){
			apache_setenv($var, $value);
		}

		return $this;
	}

	/**
	 * @param string $var
	 *
	 * @return $this
	 */
	protected function __unsetEnv(string $var){
		$var = strtoupper($var);

		unset($_ENV[$var]);
		putenv($var);

		return $this;
	}

	/**
	 * use with caution!
	 *
	 * @return $this
	 */
	protected function __clearEnv(){
		$_ENV = [];

		return $this;
	}

	/**
	 * @param string $file
	 *
	 * @return array
	 * @throws \chillerlan\Traits\TraitException
	 */
	private function __read(string $file):array{

		if(!is_readable($file) || !is_file($file)){
			throw new TraitException('invalid file: '.$file);
		}

		// Read file into an array of lines with auto-detected line endings
		$autodetect = ini_get('auto_detect_line_endings');
		ini_set('auto_detect_line_endings', '1');
		$lines = file($file, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
		ini_set('auto_detect_line_endings', $autodetect);

		if(!is_array($lines) || empty($lines)){
			throw new TraitException('error while reading file: '.$file);
		}

		return array_map('trim', $lines);
	}

	/**
	 * @link http://php.net/variables-order
	 *
	 * @param array $data
	 * @param bool  $overwrite
	 *
	 * @return $this
	 */
	private function __load(array $data, bool $overwrite){

		foreach($data as $line){

			// skip empty lines and comments
			if(empty($line) || strpos($line, '#') === 0){
				continue;
			}

			$kv = array_map('trim', explode('=', $line, 2));

			// skip empty and numeric keys, keys with spaces, existing keys that shall not be overwritten
			if(empty($kv[0]) || is_numeric($kv[0]) || strpos($kv[0], ' ') !== false || (!$overwrite && array_key_exists($kv[0], $_ENV))){
				continue;
			}

			$this->__setEnv($kv[0], isset($kv[1]) ? trim($kv[1]) : null);
		}

		return $this;
	}

	/**
	 * @param string $value
	 *
	 * @return string|null
	 */
	private function __parse(string $value = null){

		if($value !== null){

			$q = $value[0] ?? null;

			$value = in_array($q, ["'", '"'], true)
				// handle quoted strings
				? preg_replace("/^$q((?:[^$q\\\\]|\\\\\\\\|\\\\$q)*)$q.*$/mx", '$1', $value)
				// skip inline comments
				: trim(explode('#', $value, 2)[0]);

			// handle multiline values
			$value = implode(PHP_EOL, explode('\\n', $value));

			// handle nested ${VARS}
			if(strpos($value, '$') !== false){
				$value = preg_replace_callback('/\${([_a-z\d]+)}/i', function($matches){
					return $this->__getEnv($matches[1]);
				}, $value);
			}

		}

		return $value;
	}

	/**
	 * @param array|null $required
	 *
	 * @return $this
	 * @throws \chillerlan\Traits\TraitException
	 */
	private function __check(array $required = null){

		if($required === null || empty($required)){
			return $this;
		}

		foreach($required as $var){
			if(!$this->__getEnv($var) || $this->__getEnv($var) === null){
				throw new TraitException('required variable not set: '.strtoupper($var));
			}
		}

		return $this;
	}
}


1			<?php
2			/**
3			* Trait Env
4			*
5			* @filesource Env.php
6			* @created 25.11.2017
7			* @package chillerlan\Traits
8			* @author Smiley <[email protected]>
9			* @copyright 2017 Smiley
10			* @license MIT
11			*/
12
13			namespace chillerlan\Traits;
14
15			/**
16			* Loads .env config files into the environment
17			*
18			* $_ENV > getenv()!
19			*
20			* @link https://github.com/vlucas/phpdotenv
21			*/
22			trait Env{
23
24			/**
25			* @param string $path
26			* @param string\|null $filename
27			* @param bool\|null $overwrite
28			* @param array\|null $required
29			*
30			* @return $this
31			*/
32			protected function __loadEnv(string $path, string $filename = null, bool $overwrite = null, array $required = null){
33			$overwrite = $overwrite !== null ? $overwrite : false;
34			$content = $this->__read(rtrim($path, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR.($filename ?? '.env'));
35
36			return $this
37			->__load($content, $overwrite)
38			->__check($required)
39			;
40			}
41
42			/**
43			* @param string $var
44			*
45			* @return bool\|mixed
46			*/
47			protected function __getEnv(string $var){
48			$var = strtoupper($var);
49
50			if(array_key_exists($var, $_ENV)){
51			return $_ENV[$var];
52			}
53
54			$val = getenv($var);
55
56			if($val !== false){
57			return $val;
58			}
59
60			if(function_exists('apache_getenv')){
61			$val = apache_getenv($var);
62
63			if($val !== false){
64			return $val;
65			}
66
67			}
68
69			return false;
70			}
71
72			/**
73			* @param string $var
74			* @param string $value
75			*
76			* @return $this
77			*/
78			protected function __setEnv(string $var, string $value = null){
79			$var = strtoupper($var);
80			$value = $this->__parse($value);
81
82			// fill $_ENV explicitly, assuming variables_order="GPCS" (production)
83			$_ENV[$var] = $value;
84			putenv($var.'='.$value);
85
86			if(function_exists('apache_setenv')){
87			apache_setenv($var, $value);
88			}
89
90			return $this;
91			}
92
93			/**
94			* @param string $var
95			*
96			* @return $this
97			*/
98			protected function __unsetEnv(string $var){
99			$var = strtoupper($var);
100
101			unset($_ENV[$var]);
102			putenv($var);
103
104			return $this;
105			}
106
107			/**
108			* use with caution!
109			*
110			* @return $this
111			*/
112			protected function __clearEnv(){
113			$_ENV = [];
114
115			return $this;
116			}
117
118			/**
119			* @param string $file
120			*
121			* @return array
122			* @throws \chillerlan\Traits\TraitException
123			*/
124			private function __read(string $file):array{
125
126			if(!is_readable($file) \|\| !is_file($file)){
127			throw new TraitException('invalid file: '.$file);
128			}
129
130			// Read file into an array of lines with auto-detected line endings
131			$autodetect = ini_get('auto_detect_line_endings');
132			ini_set('auto_detect_line_endings', '1');
133			$lines = file($file, FILE_IGNORE_NEW_LINES \| FILE_SKIP_EMPTY_LINES);
134			ini_set('auto_detect_line_endings', $autodetect);
135
136			if(!is_array($lines) \|\| empty($lines)){
137			throw new TraitException('error while reading file: '.$file);
138			}
139
140			return array_map('trim', $lines);
141			}
142
143			/**
144			* @link http://php.net/variables-order
145			*
146			* @param array $data
147			* @param bool $overwrite
148			*
149			* @return $this
150			*/
151			private function __load(array $data, bool $overwrite){
152
153			foreach($data as $line){
154
155			// skip empty lines and comments
156			if(empty($line) \|\| strpos($line, '#') === 0){
157			continue;
158			}
159
160			$kv = array_map('trim', explode('=', $line, 2));
161
162			// skip empty and numeric keys, keys with spaces, existing keys that shall not be overwritten
163			if(empty($kv[0]) \|\| is_numeric($kv[0]) \|\| strpos($kv[0], ' ') !== false \|\| (!$overwrite && array_key_exists($kv[0], $_ENV))){
164			continue;
165			}
166
167			$this->__setEnv($kv[0], isset($kv[1]) ? trim($kv[1]) : null);
168			}
169
170			return $this;
171			}
172
173			/**
174			* @param string $value
175			*
176			* @return string\|null
177			*/
178			private function __parse(string $value = null){
179
180			if($value !== null){
181
182			$q = $value[0] ?? null;
183
184			$value = in_array($q, ["'", '"'], true)
185			// handle quoted strings
186			? preg_replace("/^$q((?:[^$q\\\\]\|\\\\\\\\\|\\\\$q))$q.$/mx", '$1', $value)
187			// skip inline comments
188			: trim(explode('#', $value, 2)[0]);
189
190			// handle multiline values
191			$value = implode(PHP_EOL, explode('\\n', $value));
192
193			// handle nested ${VARS}
194			if(strpos($value, '$') !== false){
195			$value = preg_replace_callback('/\${([_a-z\d]+)}/i', function($matches){
196			return $this->__getEnv($matches[1]);
197			}, $value);
198			}
199
200			}
201
202			return $value;
203			}
204
205			/**
206			* @param array\|null $required
207			*
208			* @return $this
209			* @throws \chillerlan\Traits\TraitException
210			*/
211			private function __check(array $required = null){
212
213			if($required === null \|\| empty($required)){
214			return $this;
215			}
216
217			foreach($required as $var){
218			if(!$this->__getEnv($var) \|\| $this->__getEnv($var) === null){
219			throw new TraitException('required variable not set: '.strtoupper($var));
220			}
221			}
222
223			return $this;
224			}
225			}
226

chillerlan / php-traits

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