MediaWiki  1.28.0
convertExtensionToRegistration.php
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1 <?php
2 
3 require_once __DIR__ . '/Maintenance.php';
4 
6 
7  protected $custom = [
8  'MessagesDirs' => 'handleMessagesDirs',
9  'ExtensionMessagesFiles' => 'handleExtensionMessagesFiles',
10  'AutoloadClasses' => 'removeAbsolutePath',
11  'ExtensionCredits' => 'handleCredits',
12  'ResourceModules' => 'handleResourceModules',
13  'ResourceModuleSkinStyles' => 'handleResourceModules',
14  'Hooks' => 'handleHooks',
15  'ExtensionFunctions' => 'handleExtensionFunctions',
16  'ParserTestFiles' => 'removeAbsolutePath',
17  ];
18 
24  protected $formerGlobals = [
25  'TrackingCategories',
26  ];
27 
34  'SpecialPageGroups' => 'deprecated', // Deprecated 1.21, removed in 1.26
35  ];
36 
42  protected $promote = [
43  'name',
44  'namemsg',
45  'version',
46  'author',
47  'url',
48  'description',
49  'descriptionmsg',
50  'license-name',
51  'type',
52  ];
53 
54  private $json, $dir, $hasWarning = false;
55 
56  public function __construct() {
57  parent::__construct();
58  $this->addDescription( 'Converts extension entry points to the new JSON registration format' );
59  $this->addArg( 'path', 'Location to the PHP entry point you wish to convert',
60  /* $required = */ true );
61  $this->addOption( 'skin', 'Whether to write to skin.json', false, false );
62  $this->addOption( 'config-prefix', 'Custom prefix for configuration settings', false, true );
63  }
64 
65  protected function getAllGlobals() {
66  $processor = new ReflectionClass( 'ExtensionProcessor' );
67  $settings = $processor->getProperty( 'globalSettings' );
68  $settings->setAccessible( true );
69  return array_merge( $settings->getValue(), $this->formerGlobals );
70  }
71 
72  public function execute() {
73  // Extensions will do stuff like $wgResourceModules += array(...) which is a
74  // fatal unless an array is already set. So set an empty value.
75  // And use the weird $__settings name to avoid any conflicts
76  // with real poorly named settings.
77  $__settings = array_merge( $this->getAllGlobals(), array_keys( $this->custom ) );
78  foreach ( $__settings as $var ) {
79  $var = 'wg' . $var;
80  $$var = [];
81  }
82  unset( $var );
83  $arg = $this->getArg( 0 );
84  if ( !is_file( $arg ) ) {
85  $this->error( "$arg is not a file.", true );
86  }
87  require $arg;
88  unset( $arg );
89  // Try not to create any local variables before this line
90  $vars = get_defined_vars();
91  unset( $vars['this'] );
92  unset( $vars['__settings'] );
93  $this->dir = dirname( realpath( $this->getArg( 0 ) ) );
94  $this->json = [];
95  $globalSettings = $this->getAllGlobals();
96  $configPrefix = $this->getOption( 'config-prefix', 'wg' );
97  if ( $configPrefix !== 'wg' ) {
98  $this->json['config']['_prefix'] = $configPrefix;
99  }
100  foreach ( $vars as $name => $value ) {
101  $realName = substr( $name, 2 ); // Strip 'wg'
102  if ( $realName === false ) {
103  continue;
104  }
105 
106  // If it's an empty array that we likely set, skip it
107  if ( is_array( $value ) && count( $value ) === 0 && in_array( $realName, $__settings ) ) {
108  continue;
109  }
110 
111  if ( isset( $this->custom[$realName] ) ) {
112  call_user_func_array( [ $this, $this->custom[$realName] ],
113  [ $realName, $value, $vars ] );
114  } elseif ( in_array( $realName, $globalSettings ) ) {
115  $this->json[$realName] = $value;
116  } elseif ( array_key_exists( $realName, $this->noLongerSupportedGlobals ) ) {
117  $this->output( 'Warning: Skipped global "' . $name . '" (' .
118  $this->noLongerSupportedGlobals[$realName] . '). ' .
119  "Please update the entry point before convert to registration.\n" );
120  $this->hasWarning = true;
121  } elseif ( strpos( $name, $configPrefix ) === 0 ) {
122  // Most likely a config setting
123  $this->json['config'][substr( $name, strlen( $configPrefix ) )] = $value;
124  } elseif ( $configPrefix !== 'wg' && strpos( $name, 'wg' ) === 0 ) {
125  // Warn about this
126  $this->output( 'Warning: Skipped global "' . $name . '" (' .
127  'config prefix is "' . $configPrefix . '"). ' .
128  "Please check that this setting isn't needed.\n" );
129  }
130  }
131 
132  // check, if the extension requires composer libraries
133  if ( $this->needsComposerAutoloader( dirname( $this->getArg( 0 ) ) ) ) {
134  // set the load composer autoloader automatically property
135  $this->output( "Detected composer dependencies, setting 'load_composer_autoloader' to true.\n" );
136  $this->json['load_composer_autoloader'] = true;
137  }
138 
139  // Move some keys to the top
140  $out = [];
141  foreach ( $this->promote as $key ) {
142  if ( isset( $this->json[$key] ) ) {
143  $out[$key] = $this->json[$key];
144  unset( $this->json[$key] );
145  }
146  }
147  $out += $this->json;
148  // Put this at the bottom
149  $out['manifest_version'] = ExtensionRegistry::MANIFEST_VERSION;
150  $type = $this->hasOption( 'skin' ) ? 'skin' : 'extension';
151  $fname = "{$this->dir}/$type.json";
152  $prettyJSON = FormatJson::encode( $out, "\t", FormatJson::ALL_OK );
153  file_put_contents( $fname, $prettyJSON . "\n" );
154  $this->output( "Wrote output to $fname.\n" );
155  if ( $this->hasWarning ) {
156  $this->output( "Found warnings! Please resolve the warnings and rerun this script.\n" );
157  }
158  }
159 
160  protected function handleExtensionFunctions( $realName, $value ) {
161  foreach ( $value as $func ) {
162  if ( $func instanceof Closure ) {
163  $this->error( "Error: Closures cannot be converted to JSON. " .
164  "Please move your extension function somewhere else.", 1
165  );
166  }
167  // check if $func exists in the global scope
168  if ( function_exists( $func ) ) {
169  $this->error( "Error: Global functions cannot be converted to JSON. " .
170  "Please move your extension function ($func) into a class.", 1
171  );
172  }
173  }
174 
175  $this->json[$realName] = $value;
176  }
177 
178  protected function handleMessagesDirs( $realName, $value ) {
179  foreach ( $value as $key => $dirs ) {
180  foreach ( (array)$dirs as $dir ) {
181  $this->json[$realName][$key][] = $this->stripPath( $dir, $this->dir );
182  }
183  }
184  }
185 
186  protected function handleExtensionMessagesFiles( $realName, $value, $vars ) {
187  foreach ( $value as $key => $file ) {
188  $strippedFile = $this->stripPath( $file, $this->dir );
189  if ( isset( $vars['wgMessagesDirs'][$key] ) ) {
190  $this->output(
191  "Note: Ignoring PHP shim $strippedFile. " .
192  "If your extension no longer supports versions of MediaWiki " .
193  "older than 1.23.0, you can safely delete it.\n"
194  );
195  } else {
196  $this->json[$realName][$key] = $strippedFile;
197  }
198  }
199  }
200 
201  private function stripPath( $val, $dir ) {
202  if ( $val === $dir ) {
203  $val = '';
204  } elseif ( strpos( $val, $dir ) === 0 ) {
205  // +1 is for the trailing / that won't be in $this->dir
206  $val = substr( $val, strlen( $dir ) + 1 );
207  }
208 
209  return $val;
210  }
211 
212  protected function removeAbsolutePath( $realName, $value ) {
213  $out = [];
214  foreach ( $value as $key => $val ) {
215  $out[$key] = $this->stripPath( $val, $this->dir );
216  }
217  $this->json[$realName] = $out;
218  }
219 
220  protected function handleCredits( $realName, $value ) {
221  $keys = array_keys( $value );
222  $this->json['type'] = $keys[0];
223  $values = array_values( $value );
224  foreach ( $values[0][0] as $name => $val ) {
225  if ( $name !== 'path' ) {
226  $this->json[$name] = $val;
227  }
228  }
229  }
230 
231  public function handleHooks( $realName, $value ) {
232  foreach ( $value as $hookName => &$handlers ) {
233  if ( $hookName === 'UnitTestsList' ) {
234  $this->output( "Note: the UnitTestsList hook is no longer necessary as " .
235  "long as your tests are located in the \"tests/phpunit/\" directory. " .
236  "Please see <https://www.mediawiki.org/wiki/Manual:PHP_unit_testing/" .
237  "Writing_unit_tests_for_extensions#Register_your_tests> for more details.\n"
238  );
239  }
240  foreach ( $handlers as $func ) {
241  if ( $func instanceof Closure ) {
242  $this->error( "Error: Closures cannot be converted to JSON. " .
243  "Please move the handler for $hookName somewhere else.", 1
244  );
245  }
246  // Check if $func exists in the global scope
247  if ( function_exists( $func ) ) {
248  $this->error( "Error: Global functions cannot be converted to JSON. " .
249  "Please move the handler for $hookName inside a class.", 1
250  );
251  }
252  }
253  if ( count( $handlers ) === 1 ) {
254  $handlers = $handlers[0];
255  }
256  }
257  $this->json[$realName] = $value;
258  }
259 
260  protected function handleResourceModules( $realName, $value ) {
261  $defaults = [];
262  $remote = $this->hasOption( 'skin' ) ? 'remoteSkinPath' : 'remoteExtPath';
263  foreach ( $value as $name => $data ) {
264  if ( isset( $data['localBasePath'] ) ) {
265  $data['localBasePath'] = $this->stripPath( $data['localBasePath'], $this->dir );
266  if ( !$defaults ) {
267  $defaults['localBasePath'] = $data['localBasePath'];
268  unset( $data['localBasePath'] );
269  if ( isset( $data[$remote] ) ) {
270  $defaults[$remote] = $data[$remote];
271  unset( $data[$remote] );
272  }
273  } else {
274  if ( $data['localBasePath'] === $defaults['localBasePath'] ) {
275  unset( $data['localBasePath'] );
276  }
277  if ( isset( $data[$remote] ) && isset( $defaults[$remote] )
278  && $data[$remote] === $defaults[$remote]
279  ) {
280  unset( $data[$remote] );
281  }
282  }
283  }
284 
285  $this->json[$realName][$name] = $data;
286  }
287  if ( $defaults ) {
288  $this->json['ResourceFileModulePaths'] = $defaults;
289  }
290  }
291 
292  protected function needsComposerAutoloader( $path ) {
293  $path .= '/composer.json';
294  if ( file_exists( $path ) ) {
295  // assume, that the composer.json file is in the root of the extension path
296  $composerJson = new ComposerJson( $path );
297  // check, if there are some dependencies in the require section
298  if ( $composerJson->getRequiredDependencies() ) {
299  return true;
300  }
301  }
302  return false;
303  }
304 }
305 
306 $maintClass = 'ConvertExtensionToRegistration';
307 require_once RUN_MAINTENANCE_IF_MAIN;
const MANIFEST_VERSION
Version of the highest supported manifest version.
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Definition: hooks.txt:802
The package json
Definition: README.txt:1
the array() calling protocol came about after MediaWiki 1.4rc1.
addArg($arg, $description, $required=true)
Add some args that are needed.
array array $promote
Keys that should be put at the top of the generated JSON file (T86608)
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
const ALL_OK
Skip escaping as many characters as reasonably possible.
Definition: FormatJson.php:55
$value
handleExtensionMessagesFiles($realName, $value, $vars)
hasOption($name)
Checks to see if a particular param exists.
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
addOption($name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
array $noLongerSupportedGlobals
No longer supported globals (with reason) should not be converted and emit a warning.
static encode($value, $pretty=false, $escaping=0)
Returns the JSON representation of a value.
Definition: FormatJson.php:127
array $formerGlobals
Things that were formerly globals and should still be converted.
addDescription($text)
Set the description text.
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Definition: distributors.txt:9
getOption($name, $default=null)
Get an option, or return the default.
output($out, $channel=null)
Throw some output to the user.
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
if(!defined( 'MEDIAWIKI')) $fname
This file is not a valid entry point, perform no further processing unless MEDIAWIKI is defined...
Definition: Setup.php:36
error($err, $die=0)
Throw an error to the user.
getArg($argId=0, $default=null)
Get an argument.
Reads a composer.json file and provides accessors to get its hash and the required dependencies...
Definition: ComposerJson.php:9
static configuration should be added through ResourceLoaderGetConfigVars instead & $vars
Definition: hooks.txt:2159
do that in ParserLimitReportFormat instead use this to modify the parameters of the image and a DIV can begin in one section and end in another Make sure your code can handle that case gracefully See the EditSectionClearerLink extension for an example zero but section is usually empty its values are the globals values before the output is cached one of or reset my talk my contributions etc etc otherwise the built in rate limiting checks are if enabled allows for interception of redirect as a string mapping parameter names to values & $type
Definition: hooks.txt:2491
Allows to change the fields on the form that will be generated $name
Definition: hooks.txt:300