MediaWiki  REL1_31
NumericUppercaseCollation.php
Go to the documentation of this file.
1 <?php
36 
41 
48  public function __construct( Language $lang ) {
49  $this->digitTransformLang = $lang;
50  parent::__construct();
51  }
52 
53  public function getSortKey( $string ) {
54  $sortkey = parent::getSortKey( $string );
55  $sortkey = $this->convertDigits( $sortkey );
56  // For each sequence of digits, insert the digit '0' and then the length of the sequence
57  // (encoded in two bytes) before it. That's all folks, it sorts correctly now! The '0' ensures
58  // correct position (where digits would normally sort), then the length will be compared putting
59  // shorter numbers before longer ones; if identical, then the characters will be compared, which
60  // generates the correct results for numbers of equal length.
61  $sortkey = preg_replace_callback( '/\d+/', function ( $matches ) {
62  // Strip any leading zeros
63  $number = ltrim( $matches[0], '0' );
64  $len = strlen( $number );
65  // This allows sequences of up to 65536 numeric characters to be handled correctly. One byte
66  // would allow only for 256, which doesn't feel future-proof.
67  $prefix = chr( floor( $len / 256 ) ) . chr( $len % 256 );
68  return '0' . $prefix . $number;
69  }, $sortkey );
70 
71  return $sortkey;
72  }
73 
82  private function convertDigits( $string ) {
83  $table = $this->digitTransformLang->digitTransformTable();
84  if ( $table ) {
85  $table = array_filter( $table );
86  $flipped = array_flip( $table );
87  // Some languages seem to also have commas in this table.
88  $flipped = array_filter( $flipped, 'is_numeric' );
89  $string = strtr( $string, $flipped );
90  }
91  return $string;
92  }
93 
94  public function getFirstLetter( $string ) {
95  $convertedString = $this->convertDigits( $string );
96 
97  if ( preg_match( '/^\d/', $convertedString ) ) {
98  return wfMessage( 'category-header-numerals' )
99  ->numParams( 0, 9 )
100  ->text();
101  } else {
102  return parent::getFirstLetter( $string );
103  }
104  }
105 }
NumericUppercaseCollation\getSortKey
getSortKey( $string)
Given a string, convert it to a (hopefully short) key that can be used for efficient sorting.
Definition: NumericUppercaseCollation.php:53
NumericUppercaseCollation\getFirstLetter
getFirstLetter( $string)
Given a string, return the logical "first letter" to be used for grouping on category pages and so on...
Definition: NumericUppercaseCollation.php:94
wfMessage
either a unescaped string or a HtmlArmor object after in associative array form externallinks including delete and has completed for all link tables whether this was an auto creation default is conds Array Extra conditions for the No matching items in log is displayed if loglist is empty msgKey Array If you want a nice box with a set this to the key of the message First element is the message additional optional elements are parameters for the key that are processed with wfMessage() -> params() ->parseAsBlock() - offset Set to overwrite offset parameter in $wgRequest set to '' to unset offset - wrap String Wrap the message in html(usually something like "&lt
UppercaseCollation
Definition: UppercaseCollation.php:23
NumericUppercaseCollation\$digitTransformLang
$digitTransformLang $digitTransformLang
Language How to convert digits (usually $wgContLang)
Definition: NumericUppercaseCollation.php:40
php
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
NumericUppercaseCollation\__construct
__construct(Language $lang)
Definition: NumericUppercaseCollation.php:48
$matches
$matches
Definition: NoLocalSettings.php:24
NumericUppercaseCollation
Collation that orders text with numbers "naturally", so that 'Foo 1' < 'Foo 2' < 'Foo 12'.
Definition: NumericUppercaseCollation.php:35
UppercaseCollation\$lang
$lang
Definition: UppercaseCollation.php:25
NumericUppercaseCollation\convertDigits
convertDigits( $string)
Convert localized digits to english digits.
Definition: NumericUppercaseCollation.php:82
Language
Internationalisation code.
Definition: Language.php:35