MediaWiki REL1_28
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30 public function getSortKey( $string ) {
31 $sortkey = parent::getSortKey( $string );
33 // For each sequence of digits, insert the digit '0' and then the length of the sequence
34 // (encoded in two bytes) before it. That's all folks, it sorts correctly now! The '0' ensures
35 // correct position (where digits would normally sort), then the length will be compared putting
36 // shorter numbers before longer ones; if identical, then the characters will be compared, which
37 // generates the correct results for numbers of equal length.
38 $sortkey = preg_replace_callback( '/\d+/', function ( $matches ) {
39 // Strip any leading zeros
40 $number = ltrim( $matches[0], '0' );
41 $len = strlen( $number );
42 // This allows sequences of up to 65536 numeric characters to be handled correctly. One byte
43 // would allow only for 256, which doesn't feel future-proof.
44 $prefix = chr( floor( $len / 256 ) ) . chr( $len % 256 );
45 return '0' . $prefix . $number;
46 }, $sortkey );
48 return $sortkey;
49 }
51 public function getFirstLetter( $string ) {
52 if ( preg_match( '/^\d/', $string ) ) {
53 // Note that we pass 0 and 9 as normal params, not numParams(). This only works for 0-9
54 // and not localised digits, so we don't want them to be converted.
55 return wfMessage( 'category-header-numerals' )->params( 0, 9 )->text();
56 } else {
57 return parent::getFirstLetter( $string );
58 }
59 }
Collation that orders text with numbers "naturally", so that 'Foo 1' < 'Foo 2' < 'Foo 12'.
getSortKey( $string)
Given a string, convert it to a (hopefully short) key that can be used for efficient sorting.
getFirstLetter( $string)
Given a string, return the logical "first letter" to be used for grouping on category pages and so on...
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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:37