Class for caching the contents of localisation files, Messages*.php and *.i18n.php. More...

Inheritance diagram for LocalisationCache:

Collaboration diagram for LocalisationCache:

Public Member Functions
	__construct ($conf)
	Constructor. More...

	disableBackend ()
	Disable the storage backend. More...

	getCompiledPluralRules ($code)
	Get the compiled plural rules for a given language from the XML files. More...

	getItem ($code, $key)
	Get a cache item. More...

	getMessagesDirs ()
	Gets the combined list of messages dirs from core and extensions. More...

	getPluralRules ($code)
	Get the plural rules for a given language from the XML files. More...

	getPluralRuleTypes ($code)
	Get the plural rule types for a given language from the XML files. More...

	getSubitem ($code, $key, $subkey)
	Get a subitem, for instance a single message for a given language. More...

	getSubitemList ($code, $key)
	Get the list of subitem keys for a given item. More...

	initShallowFallback ($primaryCode, $fallbackCode)
	Create a fallback from one language to another, without creating a complete persistent cache. More...

	isExpired ($code)
	Returns true if the cache identified by $code is missing or expired. More...

	isMergeableKey ($key)
	Returns true if the given key is mergeable, that is, if it is an associative array which can be merged through a fallback sequence. More...

	readJSONFile ($fileName)
	Read a JSON file containing localisation messages. More...

	recache ($code)
	Load localisation data for a given language for both core and extensions and save it to the persistent cache store and the process cache. More...

	unload ($code)
	Unload the data for a given language from the object cache. More...

	unloadAll ()
	Unload all data. More...

Public Attributes
const	VERSION = 4

Static Public Attributes
static	$allKeys
	All item keys. More...

static	$magicWordKeys = [ 'magicWords' ]
	Keys for items that are formatted like $magicWords. More...

static	$mergeableAliasListKeys = [ 'specialPageAliases' ]
	Keys for items which contain an array of arrays of equivalent aliases for each subitem. More...

static	$mergeableListKeys = [ 'extraUserToggles' ]
	Keys for items which are a numbered array. More...

static	$mergeableMapKeys
	Keys for items which consist of associative arrays, which may be merged by a fallback sequence. More...

static	$optionalMergeKeys = [ 'bookstoreList' ]
	Keys for items which contain an associative array, and may be merged if the primary value contains the special array key "inherit". More...

static	$preloadedKeys = [ 'dateFormats', 'namespaceNames' ]
	Keys which are loaded automatically by initLanguage() More...

static	$splitKeys = [ 'messages' ]
	Keys for items where the subitems are stored in the backend separately. More...

Protected Member Functions
	buildPreload ($data)
	Build the preload item from the given pre-cache data. More...

	initLanguage ($code)
	Initialise a language in this object. More...

	loadItem ($code, $key)
	Load an item into the cache. More...

	loadPluralFile ($fileName)
	Load a plural XML file with the given filename, compile the relevant rules, and save the compiled rules in a process-local cache. More...

	loadPluralFiles ()
	Load the plural XML files. More...

	loadSubitem ($code, $key, $subkey)
	Load a subitem into the cache. More...

	mergeExtensionItem ($codeSequence, $key, &$value, $fallbackValue)
	Given an array mapping language code to localisation value, such as is found in extension *.i18n.php files, iterate through a fallback sequence to merge the given data with an existing primary value. More...

	mergeItem ($key, &$value, $fallbackValue)
	Merge two localisation values, a primary and a fallback, overwriting the primary value in place. More...

	mergeMagicWords (&$value, $fallbackValue)

	readPHPFile ($_fileName, $_fileType)
	Read a PHP file containing localisation data. More...

	readSourceFilesAndRegisterDeps ($code, &$deps)
	Read the data from the source files for a given language, and register the relevant dependencies in the $deps array. More...

Protected Attributes
	$data = []
	The cache data. More...

Private Attributes
	$conf
	Configuration associative array. More...

	$forceRecache = false
	True to treat all files as expired until they are regenerated by this object. More...

	$initialisedLangs = []
	An array where presence of a key indicates that that language has been initialised. More...

	$loadedItems = []
	A 2-d associative array, code/key, where presence indicates that the item is loaded. More...

	$loadedSubitems = []
	A 3-d associative array, code/key/subkey, where presence indicates that the subitem is loaded. More...

	$manualRecache = false
	True if recaching should only be done on an explicit call to recache(). More...

	$mergeableKeys = null

	$pluralRules = null
	Associative array of cached plural rules. More...

	$pluralRuleTypes = null
	Associative array of cached plural rule types. More...

	$recachedLangs = []
	An array where the keys are codes that have been recached by this instance. More...

	$shallowFallbacks = []
	An array mapping non-existent pseudo-languages to fallback languages. More...

LCStore	$store
	The persistent store object. More...

Detailed Description

Class for caching the contents of localisation files, Messages*.php and *.i18n.php.

An instance of this class is available using Language::getLocalisationCache().

The values retrieved from here are merged, containing items from extension files, core messages files and the language fallback sequence (e.g. zh-cn -> zh-hans -> en ). Some common errors are corrected, for example namespace names with spaces instead of underscores, but heavyweight processing, such as grammatical transformation, is done by the caller.

Definition at line 41 of file LocalisationCache.php.

Constructor & Destructor Documentation

LocalisationCache::__construct ( $conf )

Constructor.

For constructor parameters, see the documentation in DefaultSettings.php for $wgLocalisationCacheConf.

Parameters

array $conf

Exceptions

MWException

Definition at line 193 of file LocalisationCache.php.

References $conf, $wgCacheDirectory, as, global, store, wfDebugLog(), and wfTempDir().

Member Function Documentation

LocalisationCache::buildPreload ( $data )

protected

Build the preload item from the given pre-cache data.

The preload item will be loaded automatically, improving performance for the commonly-requested items it contains.

Parameters

array $data

Returns: array

Definition at line 1050 of file LocalisationCache.php.

References $data, and as.

Referenced by recache().

LocalisationCache::disableBackend ( )

Disable the storage backend.

Definition at line 1099 of file LocalisationCache.php.

References store.

LocalisationCache::getCompiledPluralRules ( $code )

Get the compiled plural rules for a given language from the XML files.

Since: 1.20

Parameters

string $code

Returns: array|null

Definition at line 585 of file LocalisationCache.php.

References $code, $e, getPluralRules(), and wfDebugLog().

Referenced by readSourceFilesAndRegisterDeps().

LocalisationCache::getItem	(	$code,
		$key
	)

Get a cache item.

Warning: this may be slow for split items (messages), since it will need to fetch all of the subitems from the cache individually.

Parameters

string	$code
string	$key

Returns: mixed

Definition at line 273 of file LocalisationCache.php.

References $code, data, and loadItem().

Referenced by getSubitemList(), and initLanguage().

LocalisationCache::getMessagesDirs ( )

Gets the combined list of messages dirs from core and extensions.

Since: 1.25

Returns: array

Definition at line 806 of file LocalisationCache.php.

References $IP, and global.

Referenced by recache().

LocalisationCache::getPluralRules ( $code )

Get the plural rules for a given language from the XML files.

Cached.

Since: 1.20

Parameters

string $code

Returns: array|null

Definition at line 608 of file LocalisationCache.php.

References $code, and loadPluralFiles().

Referenced by getCompiledPluralRules(), and readSourceFilesAndRegisterDeps().

LocalisationCache::getPluralRuleTypes ( $code )

Get the plural rule types for a given language from the XML files.

Cached.

Since: 1.22

Parameters

string $code

Returns: array|null

Definition at line 626 of file LocalisationCache.php.

References $code, and loadPluralFiles().

Referenced by readSourceFilesAndRegisterDeps().

LocalisationCache::getSubitem	(	$code,
		$key,
		$subkey
	)

Get a subitem, for instance a single message for a given language.

Parameters

string	$code
string	$key
string	$subkey

Returns: mixed|null

Definition at line 292 of file LocalisationCache.php.

References $code, data, and loadSubitem().

Referenced by getSubitemList(), and loadItem().

LocalisationCache::getSubitemList	(	$code,
		$key
	)

Get the list of subitem keys for a given item.

This is faster than array_keys($lc->getItem(...)) for the items listed in self::$splitKeys.

Will return null if the item is not found, or false if the item is not an array.

Parameters

string	$code
string	$key

Returns: bool|null|string

Definition at line 318 of file LocalisationCache.php.

References $code, getItem(), and getSubitem().

LocalisationCache::initLanguage ( $code )

protected

Initialise a language in this object.

Rebuild the cache if necessary.

Parameters

string $code

Exceptions

MWException

Definition at line 447 of file LocalisationCache.php.

References $code, as, data, getItem(), initShallowFallback(), isExpired(), Language\isSupportedLanguage(), Language\isValidBuiltInCode(), and recache().

Referenced by loadItem(), and loadSubitem().

LocalisationCache::initShallowFallback	(	$primaryCode,
		$fallbackCode
	)

Create a fallback from one language to another, without creating a complete persistent cache.

Parameters

string	$primaryCode
string	$fallbackCode

Definition at line 508 of file LocalisationCache.php.

References data.

Referenced by initLanguage().

LocalisationCache::isExpired ( $code )

Returns true if the cache identified by $code is missing or expired.

Parameters

string $code

Returns: bool

Definition at line 409 of file LocalisationCache.php.

References $code, $keys, as, CacheDependency\isExpired(), store, and wfDebug().

Referenced by initLanguage().

LocalisationCache::isMergeableKey ( $key )

Returns true if the given key is mergeable, that is, if it is an associative array which can be merged through a fallback sequence.

Parameters

string $key

Returns: bool

Definition at line 250 of file LocalisationCache.php.

Referenced by recache().

LocalisationCache::loadItem	(	$code,
		$key
	)

protected

Load an item into the cache.

Parameters

string	$code
string	$key

Definition at line 336 of file LocalisationCache.php.

References $code, as, data, getSubitem(), initLanguage(), and store.

Referenced by getItem(), and loadSubitem().

LocalisationCache::loadPluralFile ( $fileName )

protected

Load a plural XML file with the given filename, compile the relevant rules, and save the compiled rules in a process-local cache.

Parameters

string $fileName

Exceptions

MWException

Definition at line 659 of file LocalisationCache.php.

References $code, and as.

Referenced by loadPluralFiles().

LocalisationCache::loadPluralFiles ( )

protected

Load the plural XML files.

Definition at line 640 of file LocalisationCache.php.

References $IP, global, and loadPluralFile().

Referenced by getPluralRules(), and getPluralRuleTypes().

LocalisationCache::loadSubitem	(	$code,
		$key,
		$subkey
	)

protected

Load a subitem into the cache.

Parameters

string	$code
string	$key
string	$subkey

Definition at line 373 of file LocalisationCache.php.

References $code, $value, data, initLanguage(), loadItem(), and store.

Referenced by getSubitem().

LocalisationCache::mergeExtensionItem	(		$codeSequence,
			$key,
		&	$value,
			$fallbackValue
	)

protected

Given an array mapping language code to localisation value, such as is found in extension *.i18n.php files, iterate through a fallback sequence to merge the given data with an existing primary value.

Returns true if any data from the extension array was used, false otherwise.

Parameters

array	$codeSequence
string	$key
mixed	$value
mixed	$fallbackValue

Returns: bool

Definition at line 787 of file LocalisationCache.php.

References $code, $value, as, and mergeItem().

LocalisationCache::mergeItem	(		$key,
		&	$value,
			$fallbackValue
	)

protected

Merge two localisation values, a primary and a fallback, overwriting the primary value in place.

Parameters

string	$key
mixed	$value
mixed	$fallbackValue

Definition at line 730 of file LocalisationCache.php.

References $value, and mergeMagicWords().

Referenced by mergeExtensionItem(), and recache().

LocalisationCache::mergeMagicWords	(	&	$value,
			$fallbackValue
	)

protected

Parameters

mixed	$value
mixed	$fallbackValue

Definition at line 760 of file LocalisationCache.php.

References $value, and as.

Referenced by mergeItem().

LocalisationCache::readJSONFile ( $fileName )

Read a JSON file containing localisation messages.

Parameters

string $fileName Name of file to read

Exceptions

MWException If there is a syntax error in the JSON file

Returns: array Array with a 'messages' key, or empty array if the file doesn't exist

Definition at line 551 of file LocalisationCache.php.

References $data, as, and FormatJson\decode().

Referenced by recache().

LocalisationCache::readPHPFile	(	$_fileName,
		$_fileType
	)

protected

Read a PHP file containing localisation data.

Parameters

string	$_fileName
string	$_fileType

Exceptions

MWException

Returns: array

Definition at line 522 of file LocalisationCache.php.

References $data.

Referenced by readSourceFilesAndRegisterDeps(), and recache().

LocalisationCache::readSourceFilesAndRegisterDeps	(		$code,
		&	$deps
	)

protected

Read the data from the source files for a given language, and register the relevant dependencies in the $deps array.

If the localisation exists, the data array is returned, otherwise false is returned.

Parameters

string	$code
array	$deps

Returns: array

Definition at line 698 of file LocalisationCache.php.

References $code, $data, $IP, getCompiledPluralRules(), Language\getMessagesFileName(), getPluralRules(), getPluralRuleTypes(), global, and readPHPFile().

Referenced by recache().

LocalisationCache::recache ( $code )

Load localisation data for a given language for both core and extensions and save it to the persistent cache store and the process cache.

Parameters

string $code

Exceptions

MWException

Definition at line 824 of file LocalisationCache.php.

References $code, $data, $dir, $dirs, $page, $value, $wgExtensionMessagesFiles, array(), as, buildPreload(), data, getMessagesDirs(), global, isMergeableKey(), mergeItem(), readJSONFile(), readPHPFile(), readSourceFilesAndRegisterDeps(), Hooks\run(), store, and wfDebug().

Referenced by initLanguage().

LocalisationCache::unload ( $code )

Unload the data for a given language from the object cache.

Reduces memory usage.

Parameters

string $code

Definition at line 1073 of file LocalisationCache.php.

References $code, as, and data.

Referenced by unloadAll().

LocalisationCache::unloadAll ( )

Unload all data.

Definition at line 1090 of file LocalisationCache.php.

References $lang, as, and unload().

Member Data Documentation

LocalisationCache::$allKeys

static

Initial value:

= [
        'fallback', 'namespaceNames', 'bookstoreList',
        'magicWords', 'messages', 'rtl', 'capitalizeAllNouns', 'digitTransformTable',
        'separatorTransformTable', 'fallback8bitEncoding', 'linkPrefixExtension',
        'linkTrail', 'linkPrefixCharset', 'namespaceAliases',
        'dateFormats', 'datePreferences', 'datePreferenceMigrationMap',
        'defaultDateFormat', 'extraUserToggles', 'specialPageAliases',
        'imageFiles', 'preloadedMessages', 'namespaceGenderAliases',
        'digitGroupingPattern', 'pluralRules', 'pluralRuleTypes', 'compiledPluralRules',
    ]

All item keys.

Definition at line 111 of file LocalisationCache.php.

LocalisationCache::$conf

private

Configuration associative array.

Definition at line 45 of file LocalisationCache.php.

Referenced by __construct().

LocalisationCache::$data = []

protected

The cache data.

3-d array, where the first key is the language code, the second key is the item key e.g. 'messages', and the third key is an item specific subkey index. Some items are not arrays and so for those items, there are no subkeys.

Definition at line 65 of file LocalisationCache.php.

Referenced by buildPreload(), readJSONFile(), LocalisationCacheBulkLoad\readPHPFile(), readPHPFile(), readSourceFilesAndRegisterDeps(), and recache().

LocalisationCache::$forceRecache = false

private

True to treat all files as expired until they are regenerated by this object.

Definition at line 57 of file LocalisationCache.php.

LocalisationCache::$initialisedLangs = []

private

An array where presence of a key indicates that that language has been initialised.

Initialisation includes checking for cache expiry and doing any necessary updates.

Definition at line 94 of file LocalisationCache.php.

LocalisationCache::$loadedItems = []

private

A 2-d associative array, code/key, where presence indicates that the item is loaded.

Value arbitrary.

For split items, if set, this indicates that all of the subitems have been loaded.

Definition at line 81 of file LocalisationCache.php.

LocalisationCache::$loadedSubitems = []

private

A 3-d associative array, code/key/subkey, where presence indicates that the subitem is loaded.

Only used for the split items, i.e. messages.

Definition at line 87 of file LocalisationCache.php.

LocalisationCache::$magicWordKeys = [ 'magicWords' ]

static

Keys for items that are formatted like $magicWords.

Definition at line 151 of file LocalisationCache.php.

LocalisationCache::$manualRecache = false

private

True if recaching should only be done on an explicit call to recache().

Setting this reduces the overhead of cache freshness checking, which requires doing a stat() for every extension i18n file.

Definition at line 52 of file LocalisationCache.php.

LocalisationCache::$mergeableAliasListKeys = [ 'specialPageAliases' ]

static

Keys for items which contain an array of arrays of equivalent aliases for each subitem.

The aliases may be merged by a fallback sequence.

Definition at line 139 of file LocalisationCache.php.

LocalisationCache::$mergeableKeys = null

private

Definition at line 183 of file LocalisationCache.php.

LocalisationCache::$mergeableListKeys = [ 'extraUserToggles' ]

static

Keys for items which are a numbered array.

Definition at line 133 of file LocalisationCache.php.

LocalisationCache::$mergeableMapKeys

static

Initial value:

= [ 'messages', 'namespaceNames',
        'namespaceAliases', 'dateFormats', 'imageFiles', 'preloadedMessages'
    ]

Keys for items which consist of associative arrays, which may be merged by a fallback sequence.

Definition at line 126 of file LocalisationCache.php.

LocalisationCache::$optionalMergeKeys = [ 'bookstoreList' ]

static

Keys for items which contain an associative array, and may be merged if the primary value contains the special array key "inherit".

That array key is removed after the first merge.

Definition at line 146 of file LocalisationCache.php.

LocalisationCache::$pluralRules = null

private

Associative array of cached plural rules.

The key is the language code, the value is an array of plural rules for that language.

Definition at line 167 of file LocalisationCache.php.

LocalisationCache::$pluralRuleTypes = null

private

Associative array of cached plural rule types.

The key is the language code, the value is an array of plural rule types for that language. For example, $pluralRuleTypes['ar'] = ['zero', 'one', 'two', 'few', 'many']. The index for each rule type matches the index for the rule in $pluralRules, thus allowing correlation between the two. The reason we don't just use the type names as the keys in $pluralRules is because Language::convertPlural applies the rules based on numeric order (or explicit numeric parameter), not based on the name of the rule type. For example, {{plural:count|wordform1|wordform2|wordform3}}, rather than {{plural:count|one=wordform1|two=wordform2|many=wordform3}}.

Definition at line 181 of file LocalisationCache.php.

LocalisationCache::$preloadedKeys = [ 'dateFormats', 'namespaceNames' ]

static

Keys which are loaded automatically by initLanguage()

Definition at line 161 of file LocalisationCache.php.

LocalisationCache::$recachedLangs = []

private

An array where the keys are codes that have been recached by this instance.

Definition at line 106 of file LocalisationCache.php.

LocalisationCache::$shallowFallbacks = []

private

An array mapping non-existent pseudo-languages to fallback languages.

This is filled by initShallowFallback() when data is requested from a language that lacks a Messages*.php file.

Definition at line 101 of file LocalisationCache.php.

LocalisationCache::$splitKeys = [ 'messages' ]

static

Keys for items where the subitems are stored in the backend separately.

Definition at line 156 of file LocalisationCache.php.

LCStore LocalisationCache::$store

private

The persistent store object.

An instance of LCStore.

Definition at line 72 of file LocalisationCache.php.

const LocalisationCache::VERSION = 4

Definition at line 42 of file LocalisationCache.php.

The documentation for this class was generated from the following file:

includes/cache/localisation/LocalisationCache.php

Public Member Functions

Public Attributes

Static Public Attributes

Protected Member Functions

Protected Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation