defender-security / vendor / cweagans / composer-configurable-plugin / src / ConfigurablePlugin.php

ConfigurablePlugin.php in Defender Security – Malware Scanner, Login Security & Firewall 6.0.1, at vendor/cweagans/composer-configurable-plugin/src/ConfigurablePlugin.php

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1	<?php
2
3	namespace cweagans\Composer;
4
5	/**
6	* @file
7	* Provides a generic way for Composer plugins to configure themselves.
8	*/
9
10	trait ConfigurablePlugin {
11
12	/**
13	* Holds information about configurable values.
14	*
15	* @var array
16	*/
17	protected array $configuration = [];
18
19	/**
20	* Holds the 'extra' key from composer.json.
21	*
22	* @var array
23	*/
24	protected array $extra;
25
26	/**
27	* Holds the name of the sub-key in extra to look for this plugin's config.
28	*
29	* @var string
30	*/
31	protected string $pluginKey;
32
33	/**
34	* Set up the ConfigurablePlugin trait.
35	*
36	* @param array $extra
37	* The 'extra' section from composer.json.
38	* @param string $pluginKey
39	* The subkey in extra to search for config. This will often be related to
40	* the plugin name. For instance, cweagans/composer-patches uses "patches-config".
41	*/
42	public function configure(array $extra, string $pluginKey): void
43	{
44	$this->extra = $extra;
45	$this->pluginKey = $pluginKey;
46	}
47
48	/**
49	* Retrieve a specified configuration value.
50	*
51	* @param string $key
52	* The configuration key to get a value for.
53	* @return string\|int\|bool\|array
54	* The value of the config key.
55	*/
56	public function getConfig($key): mixed
57	{
58	// Bail out early if we don't have any information from the plugin or
59	// if the requested config key was not described to us.
60	if (is_null($this->extra) \|\| is_null($this->pluginKey)) {
61	throw new \LogicException('You must call ConfigurablePlugin::configure() before attempting to retrieve a config value.');
62	}
63	if (!array_key_exists($key, $this->configuration)) {
64	throw new \InvalidArgumentException('Config key ' . $key . ' was not declared in $configuration.');
65	}
66
67	// Start with the default value from configuration.
68	$value = $this->configuration[$key]['default'];
69
70	// If a value is set in composer.json, override the default.
71	if (isset($this->extra[$this->pluginKey][$key])) {
72	$value = $this->extra[$this->pluginKey][$key];
73	}
74
75	// If a value is set in the environment, override anything that we've
76	// previously found.
77	if (getenv($this->getEnvvarName($key)) !== FALSE) {
78	$prevValue = $value;
79	$value = getenv($this->getEnvvarName($key));
80	switch ($this->configuration[$key]['type']) {
81	case 'string':
82	// We don't need to do anything here. Envvars are all strings.
83	break;
84	case 'int':
85	$value = (int)$value;
86	break;
87	case 'bool':
88	$value = $this->castEnvvarToBool($value, $prevValue);
89	break;
90	case 'list':
91	$value = $this->castEnvvarToList($value, $prevValue);
92	break;
93	}
94	}
95
96	return $value;
97	}
98
99	/**
100	* Convert a config key name into an environment var name.
101	*
102	* @param $key
103	* The key to convert.
104	* @return string
105	* An envvar-ified version of $key
106	*/
107	public function getEnvvarName($key): string
108	{
109	$key = $this->pluginKey . '_' . $key;
110	$key = strtoupper($key);
111	$key = str_replace('-', '_', $key);
112	return $key;
113	}
114
115	/**
116	* Get a boolean value from the environment.
117	*
118	* @param string $value
119	* The value retrieved from the environment.
120	* @param bool $default
121	* The default value to use if we can't figure out what the user wants.
122	*
123	* @return bool
124	*/
125	public function castEnvvarToBool($value, $default): bool
126	{
127	// Everything is strtolower()'d because that cuts the number of cases
128	// to look for in half.
129	$value = trim(strtolower($value));
130
131	// If it looks false-y, return FALSE.
132	if ($value == 'false' \|\| $value == '0' \|\| $value == 'no') {
133	return FALSE;
134	}
135
136	// If it looks truth-y, return TRUE.
137	if ($value == 'true' \|\| $value == '1' \|\| $value == 'yes') {
138	return TRUE;
139	}
140
141	// Otherwise, just return the default value that we were given. Ain't
142	// nobody got time to look for a million different ways of saying yes
143	// or no.
144	return $default;
145	}
146
147	/**
148	* Get an array from the environment.
149	*
150	* @param string $value
151	* The value retrieved from the environment.
152	* @param array $default
153	* The default value to use if we can't figure out what the user wants.
154	*
155	* @return array
156	*/
157	public function castEnvvarToList($value, $default): array
158	{
159	// Trim any extra whitespace and then split the string on commas.
160	$value = explode(',', trim($value));
161
162	// Strip any empty values.
163	$value = array_filter($value);
164
165	// If we didn't get anything from the supplied value, better to just use the default.
166	if (empty($value)) {
167	return $default;
168	}
169
170	// Return the array.
171	return $value;
172	}
173	}
174