1<?php
2
3/*
4 * This file is part of Composer.
5 *
6 * (c) Nils Adermann <naderman@naderman.de>
7 *     Jordi Boggiano <j.boggiano@seld.be>
8 *
9 * For the full copyright and license information, please view the LICENSE
10 * file that was distributed with this source code.
11 */
12
13namespace Composer;
14
15use Composer\Autoload\ClassLoader;
16use Composer\Semver\VersionParser;
17
18/**
19 * This class is copied in every Composer installed project and available to all
20 *
21 * See also https://getcomposer.org/doc/07-runtime.md#installed-versions
22 *
23 * To require its presence, you can require `composer-runtime-api ^2.0`
24 *
25 * @final
26 */
27class InstalledVersions
28{
29    /**
30     * @var mixed[]|null
31     * @psalm-var array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}|array{}|null
32     */
33    private static $installed;
34
35    /**
36     * @var bool|null
37     */
38    private static $canGetVendors;
39
40    /**
41     * @var array[]
42     * @psalm-var array<string, array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}>
43     */
44    private static $installedByVendor = array();
45
46    /**
47     * Returns a list of all package names which are present, either by being installed, replaced or provided
48     *
49     * @return string[]
50     * @psalm-return list<string>
51     */
52    public static function getInstalledPackages()
53    {
54        $packages = array();
55        foreach (self::getInstalled() as $installed) {
56            $packages[] = array_keys($installed['versions']);
57        }
58
59        if (1 === \count($packages)) {
60            return $packages[0];
61        }
62
63        return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
64    }
65
66    /**
67     * Returns a list of all package names with a specific type e.g. 'library'
68     *
69     * @param  string   $type
70     * @return string[]
71     * @psalm-return list<string>
72     */
73    public static function getInstalledPackagesByType($type)
74    {
75        $packagesByType = array();
76
77        foreach (self::getInstalled() as $installed) {
78            foreach ($installed['versions'] as $name => $package) {
79                if (isset($package['type']) && $package['type'] === $type) {
80                    $packagesByType[] = $name;
81                }
82            }
83        }
84
85        return $packagesByType;
86    }
87
88    /**
89     * Checks whether the given package is installed
90     *
91     * This also returns true if the package name is provided or replaced by another package
92     *
93     * @param  string $packageName
94     * @param  bool   $includeDevRequirements
95     * @return bool
96     */
97    public static function isInstalled($packageName, $includeDevRequirements = true)
98    {
99        foreach (self::getInstalled() as $installed) {
100            if (isset($installed['versions'][$packageName])) {
101                return $includeDevRequirements || empty($installed['versions'][$packageName]['dev_requirement']);
102            }
103        }
104
105        return false;
106    }
107
108    /**
109     * Checks whether the given package satisfies a version constraint
110     *
111     * e.g. If you want to know whether version 2.3+ of package foo/bar is installed, you would call:
112     *
113     *   Composer\InstalledVersions::satisfies(new VersionParser, 'foo/bar', '^2.3')
114     *
115     * @param  VersionParser $parser      Install composer/semver to have access to this class and functionality
116     * @param  string        $packageName
117     * @param  string|null   $constraint  A version constraint to check for, if you pass one you have to make sure composer/semver is required by your package
118     * @return bool
119     */
120    public static function satisfies(VersionParser $parser, $packageName, $constraint)
121    {
122        $constraint = $parser->parseConstraints($constraint);
123        $provided = $parser->parseConstraints(self::getVersionRanges($packageName));
124
125        return $provided->matches($constraint);
126    }
127
128    /**
129     * Returns a version constraint representing all the range(s) which are installed for a given package
130     *
131     * It is easier to use this via isInstalled() with the $constraint argument if you need to check
132     * whether a given version of a package is installed, and not just whether it exists
133     *
134     * @param  string $packageName
135     * @return string Version constraint usable with composer/semver
136     */
137    public static function getVersionRanges($packageName)
138    {
139        foreach (self::getInstalled() as $installed) {
140            if (!isset($installed['versions'][$packageName])) {
141                continue;
142            }
143
144            $ranges = array();
145            if (isset($installed['versions'][$packageName]['pretty_version'])) {
146                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
147            }
148            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
149                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
150            }
151            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
152                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
153            }
154            if (array_key_exists('provided', $installed['versions'][$packageName])) {
155                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
156            }
157
158            return implode(' || ', $ranges);
159        }
160
161        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
162    }
163
164    /**
165     * @param  string      $packageName
166     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
167     */
168    public static function getVersion($packageName)
169    {
170        foreach (self::getInstalled() as $installed) {
171            if (!isset($installed['versions'][$packageName])) {
172                continue;
173            }
174
175            if (!isset($installed['versions'][$packageName]['version'])) {
176                return null;
177            }
178
179            return $installed['versions'][$packageName]['version'];
180        }
181
182        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
183    }
184
185    /**
186     * @param  string      $packageName
187     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as version, use satisfies or getVersionRanges if you need to know if a given version is present
188     */
189    public static function getPrettyVersion($packageName)
190    {
191        foreach (self::getInstalled() as $installed) {
192            if (!isset($installed['versions'][$packageName])) {
193                continue;
194            }
195
196            if (!isset($installed['versions'][$packageName]['pretty_version'])) {
197                return null;
198            }
199
200            return $installed['versions'][$packageName]['pretty_version'];
201        }
202
203        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
204    }
205
206    /**
207     * @param  string      $packageName
208     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as reference
209     */
210    public static function getReference($packageName)
211    {
212        foreach (self::getInstalled() as $installed) {
213            if (!isset($installed['versions'][$packageName])) {
214                continue;
215            }
216
217            if (!isset($installed['versions'][$packageName]['reference'])) {
218                return null;
219            }
220
221            return $installed['versions'][$packageName]['reference'];
222        }
223
224        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
225    }
226
227    /**
228     * @param  string      $packageName
229     * @return string|null If the package is being replaced or provided but is not really installed, null will be returned as install path. Packages of type metapackages also have a null install path.
230     */
231    public static function getInstallPath($packageName)
232    {
233        foreach (self::getInstalled() as $installed) {
234            if (!isset($installed['versions'][$packageName])) {
235                continue;
236            }
237
238            return isset($installed['versions'][$packageName]['install_path']) ? $installed['versions'][$packageName]['install_path'] : null;
239        }
240
241        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
242    }
243
244    /**
245     * @return array
246     * @psalm-return array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}
247     */
248    public static function getRootPackage()
249    {
250        $installed = self::getInstalled();
251
252        return $installed[0]['root'];
253    }
254
255    /**
256     * Returns the raw installed.php data for custom implementations
257     *
258     * @deprecated Use getAllRawData() instead which returns all datasets for all autoloaders present in the process. getRawData only returns the first dataset loaded, which may not be what you expect.
259     * @return array[]
260     * @psalm-return array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}
261     */
262    public static function getRawData()
263    {
264        @trigger_error('getRawData only returns the first dataset loaded, which may not be what you expect. Use getAllRawData() instead which returns all datasets for all autoloaders present in the process.', E_USER_DEPRECATED);
265
266        if (null === self::$installed) {
267            // only require the installed.php file if this file is loaded from its dumped location,
268            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
269            if (substr(__DIR__, -8, 1) !== 'C') {
270                self::$installed = include __DIR__ . '/installed.php';
271            } else {
272                self::$installed = array();
273            }
274        }
275
276        return self::$installed;
277    }
278
279    /**
280     * Returns the raw data of all installed.php which are currently loaded for custom implementations
281     *
282     * @return array[]
283     * @psalm-return list<array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}>
284     */
285    public static function getAllRawData()
286    {
287        return self::getInstalled();
288    }
289
290    /**
291     * Lets you reload the static array from another file
292     *
293     * This is only useful for complex integrations in which a project needs to use
294     * this class but then also needs to execute another project's autoloader in process,
295     * and wants to ensure both projects have access to their version of installed.php.
296     *
297     * A typical case would be PHPUnit, where it would need to make sure it reads all
298     * the data it needs from this class, then call reload() with
299     * `require $CWD/vendor/composer/installed.php` (or similar) as input to make sure
300     * the project in which it runs can then also use this class safely, without
301     * interference between PHPUnit's dependencies and the project's dependencies.
302     *
303     * @param  array[] $data A vendor/composer/installed.php data set
304     * @return void
305     *
306     * @psalm-param array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>} $data
307     */
308    public static function reload($data)
309    {
310        self::$installed = $data;
311        self::$installedByVendor = array();
312    }
313
314    /**
315     * @return array[]
316     * @psalm-return list<array{root: array{name: string, pretty_version: string, version: string, reference: string|null, type: string, install_path: string, aliases: string[], dev: bool}, versions: array<string, array{pretty_version?: string, version?: string, reference?: string|null, type?: string, install_path?: string, aliases?: string[], dev_requirement: bool, replaced?: string[], provided?: string[]}>}>
317     */
318    private static function getInstalled()
319    {
320        if (null === self::$canGetVendors) {
321            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
322        }
323
324        $installed = array();
325
326        if (self::$canGetVendors) {
327            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
328                if (isset(self::$installedByVendor[$vendorDir])) {
329                    $installed[] = self::$installedByVendor[$vendorDir];
330                } elseif (is_file($vendorDir.'/composer/installed.php')) {
331                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
332                    if (null === self::$installed && strtr($vendorDir.'/composer', '\\', '/') === strtr(__DIR__, '\\', '/')) {
333                        self::$installed = $installed[count($installed) - 1];
334                    }
335                }
336            }
337        }
338
339        if (null === self::$installed) {
340            // only require the installed.php file if this file is loaded from its dumped location,
341            // and not from its source location in the composer/composer package, see https://github.com/composer/composer/issues/9937
342            if (substr(__DIR__, -8, 1) !== 'C') {
343                self::$installed = require __DIR__ . '/installed.php';
344            } else {
345                self::$installed = array();
346            }
347        }
348        $installed[] = self::$installed;
349
350        return $installed;
351    }
352}
353