summaryrefslogtreecommitdiff
path: root/includes/Collation.php
diff options
context:
space:
mode:
Diffstat (limited to 'includes/Collation.php')
-rw-r--r--includes/Collation.php52
1 files changed, 48 insertions, 4 deletions
diff --git a/includes/Collation.php b/includes/Collation.php
index f00b568f..0c510b78 100644
--- a/includes/Collation.php
+++ b/includes/Collation.php
@@ -3,6 +3,9 @@
abstract class Collation {
static $instance;
+ /**
+ * @return Collation
+ */
static function singleton() {
if ( !self::$instance ) {
global $wgCategoryCollation;
@@ -11,13 +14,30 @@ abstract class Collation {
return self::$instance;
}
+ /**
+ * @throws MWException
+ * @param $collationName string
+ * @return Collation
+ */
static function factory( $collationName ) {
switch( $collationName ) {
case 'uppercase':
return new UppercaseCollation;
+ case 'identity':
+ return new IdentityCollation;
case 'uca-default':
return new IcuCollation( 'root' );
default:
+ # Provide a mechanism for extensions to hook in.
+
+ $collationObject = null;
+ wfRunHooks( 'Collation::factory', array( $collationName, &$collationObject ) );
+
+ if ( $collationObject instanceof Collation ) {
+ return $collationObject;
+ }
+
+ // If all else fails...
throw new MWException( __METHOD__.": unknown collation type \"$collationName\"" );
}
}
@@ -81,6 +101,30 @@ class UppercaseCollation extends Collation {
}
}
+/**
+ * Collation class that's essentially a no-op.
+ *
+ * Does sorting based on binary value of the string.
+ * Like how things were pre 1.17.
+ */
+class IdentityCollation extends Collation {
+
+ function getSortKey( $string ) {
+ return $string;
+ }
+
+ function getFirstLetter( $string ) {
+ global $wgContLang;
+ // Copied from UppercaseCollation.
+ // I'm kind of unclear on when this could happen...
+ if ( $string[0] == "\0" ) {
+ $string = substr( $string, 1 );
+ }
+ return $wgContLang->firstChar( $string );
+ }
+}
+
+
class IcuCollation extends Collation {
var $primaryCollator, $mainCollator, $locale;
var $firstLetterData;
@@ -259,13 +303,13 @@ class IcuCollation extends Collation {
* Do a binary search, and return the index of the largest item that sorts
* less than or equal to the target value.
*
- * @param $valueCallback A function to call to get the value with
+ * @param $valueCallback array A function to call to get the value with
* a given array index.
- * @param $valueCount The number of items accessible via $valueCallback,
+ * @param $valueCount int The number of items accessible via $valueCallback,
* indexed from 0 to $valueCount - 1
- * @param $comparisonCallback A callback to compare two values, returning
+ * @param $comparisonCallback array A callback to compare two values, returning
* -1, 0 or 1 in the style of strcmp().
- * @param $target The target value to find.
+ * @param $target string The target value to find.
*
* @return The item index of the lower bound, or false if the target value
* sorts before all items.