Add parser functions giving access to standard date/time formats

Add parser functions #timef and #timefl, giving access to the standard
date/time formats of any language.

StubObject::unstub() is no longer required since the user language is
unstubbed in ParserOptions::__construct().

Bug: T223772
Change-Id: If158f45aad67ff017f9cd15889915b226e03f50c

ParserFunctions.i18n.magic.php

@@ -20,6 +20,12 @@ $magicWords['en'] = [
 	'ifexist' => [ 0, 'ifexist' ],
 	'time' => [ 0, 'time' ],
 	'timel' => [ 0, 'timel' ],
+	'timef' => [ 1, 'timef' ],
+	'timefl' => [ 1, 'timefl' ],
+	'timef-time' => [ 1, 'time' ],
+	'timef-date' => [ 1, 'date' ],
+	'timef-both' => [ 1, 'both' ],
+	'timef-pretty' => [ 1, 'pretty' ],
 	'rel2abs' => [ 0, 'rel2abs' ],
 	'titleparts' => [ 0, 'titleparts' ],
 	'len' => [ 0, 'len' ],

i18n/en.json

@@ -7,6 +7,7 @@
 	"pfunc_time_too_long": "Error: Too many #time calls.",
 	"pfunc_time_too_big": "Error: #time only supports years up to 9999.",
 	"pfunc_time_too_small": "Error: #time only supports years from 0.",
+	"pfunc_timef_bad_format": "Error: invalid format for #timef",
 	"pfunc_rel2abs_invalid_depth": "Error: Invalid depth in path: \"$1\" (tried to access a node above the root node).",
 	"pfunc_expr_stack_exhausted": "Expression error: Stack exhausted.",
 	"pfunc_expr_unexpected_number": "Expression error: Unexpected number.",

i18n/qqq.json

@@ -15,6 +15,7 @@
 	"pfunc_time_too_long": "Used as error message.\n\nSee also:\n* {{msg-mw|Pfunc time error}}\n* {{msg-mw|Pfunc time too big}}\n* {{msg-mw|Pfunc time too small}}",
 	"pfunc_time_too_big": "Used as error message.\n\nSee also:\n* {{msg-mw|Pfunc time error}}\n* {{msg-mw|Pfunc time too long}}\n* {{msg-mw|Pfunc time too small}}",
 	"pfunc_time_too_small": "Used as error message.\n\nSee also:\n* {{msg-mw|Pfunc time error}}\n* {{msg-mw|Pfunc time too long}}\n* {{msg-mw|Pfunc time too big}}",
+	"pfunc_timef_bad_format": "Used as error message.",
 	"pfunc_rel2abs_invalid_depth": "Used as error message. Parameters:\n* $1 - full path",
 	"pfunc_expr_stack_exhausted": "Used as error message.\n{{Related|Pfunc expr}}",
 	"pfunc_expr_unexpected_number": "Used as error message.\n{{Related|Pfunc expr}}",

includes/Hooks.php

@@ -84,6 +84,8 @@ class Hooks implements
 		$parser->setFunctionHook( 'iferror', [ $this->parserFunctions, 'iferror' ], Parser::SFH_OBJECT_ARGS );
 		$parser->setFunctionHook( 'time', [ $this->parserFunctions, 'time' ], Parser::SFH_OBJECT_ARGS );
 		$parser->setFunctionHook( 'timel', [ $this->parserFunctions, 'localTime' ], Parser::SFH_OBJECT_ARGS );
+		$parser->setFunctionHook( 'timef', [ $this->parserFunctions, 'timef' ], Parser::SFH_OBJECT_ARGS );
+		$parser->setFunctionHook( 'timefl', [ $this->parserFunctions, 'timefl' ], Parser::SFH_OBJECT_ARGS );
 
 		$parser->setFunctionHook( 'expr', [ $this->parserFunctions, 'expr' ] );
 		$parser->setFunctionHook( 'rel2abs', [ $this->parserFunctions, 'rel2abs' ] );

includes/ParserFunctions.php

@@ -19,7 +19,6 @@ use PPNode;
 use RepoGroup;
 use Sanitizer;
 use StringUtils;
-use StubObject;
 use Title;
 use Wikimedia\RequestTimeout\TimeoutException;
 
@@ -564,15 +563,8 @@ class ParserFunctions {
 					'</strong>';
 			}
 
-			if ( $language !== '' && $this->languageNameUtils->isValidBuiltInCode( $language ) ) {
-				// use whatever language is passed as a parameter
-				$langObject = $this->languageFactory->getLanguage( $language );
-			} else {
-				// use wiki's content language
-				$langObject = $parser->getTargetLanguage();
-				// $ttl is passed by reference, which doesn't work right on stub objects
-				StubObject::unstub( $langObject );
-			}
+			$langObject = $this->languageFactory->getLanguage(
+				$this->normalizeLangCode( $parser, $language ) );
 			$result = $langObject->sprintfDate( $format, $ts, $tz, $ttl );
 		}
 		self::$mTimeCache[$format][$cacheKey][$language][$local] = [ $result, $ttl ];
@@ -582,6 +574,21 @@ class ParserFunctions {
 		return $result;
 	}
 
+	/**
+	 * Convert an input string to a known language code for time formatting
+	 *
+	 * @param Parser $parser
+	 * @param string $langCode
+	 * @return string
+	 */
+	private function normalizeLangCode( Parser $parser, string $langCode ) {
+		if ( $langCode !== '' && $this->languageNameUtils->isKnownLanguageTag( $langCode ) ) {
+			return $langCode;
+		} else {
+			return $parser->getTargetLanguage()->getCode();
+		}
+	}
+
 	/**
 	 * {{#time: format string }}
 	 * {{#time: format string | date/time object }}
@@ -622,6 +629,69 @@ class ParserFunctions {
 		return $this->timeCommon( $parser, $frame, $format, $date, $language, true );
 	}
 
+	/**
+	 * Formatted time -- time with a symbolic rather than explicit format
+	 *
+	 * @param Parser $parser
+	 * @param PPFrame $frame
+	 * @param array $args
+	 * @return string
+	 */
+	public function timef( Parser $parser, PPFrame $frame, array $args ) {
+		return $this->timefCommon( $parser, $frame, $args, false );
+	}
+
+	/**
+	 * Formatted time -- time with a symbolic rather than explicit format
+	 * Using the local timezone of the wiki.
+	 *
+	 * @param Parser $parser
+	 * @param PPFrame $frame
+	 * @param array $args
+	 * @return string
+	 */
+	public function timefl( Parser $parser, PPFrame $frame, array $args ) {
+		return $this->timefCommon( $parser, $frame, $args, true );
+	}
+
+	/**
+	 * Helper for timef and timefl
+	 *
+	 * @param Parser $parser
+	 * @param PPFrame $frame
+	 * @param array $args
+	 * @param bool $local
+	 * @return string
+	 */
+	private function timefCommon( Parser $parser, PPFrame $frame, array $args, $local ) {
+		$date = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
+		$inputType = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
+
+		if ( $inputType !== '' ) {
+			$types = $parser->getMagicWordFactory()->newArray( [
+				'timef-time',
+				'timef-date',
+				'timef-both',
+				'timef-pretty'
+			] );
+			$id = $types->matchStartToEnd( $inputType );
+			if ( $id === false ) {
+				return '<strong class="error">' .
+					wfMessage( 'pfunc_timef_bad_format' ) .
+					'</strong>';
+			}
+			$type = str_replace( 'timef-', '', $id );
+		} else {
+			$type = 'both';
+		}
+
+		$langCode = isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
+		$langCode = $this->normalizeLangCode( $parser, $langCode );
+		$lang = $this->languageFactory->getLanguage( $langCode );
+		$format = $lang->getDateFormatString( $type, 'default' );
+		return $this->timeCommon( $parser, $frame, $format, $date, $langCode, $local );
+	}
+
 	/**
 	 * Obtain a specified number of slash-separated parts of a title,
 	 * e.g. {{#titleparts:Hello/World|1}} => "Hello"

tests/parser/funcsParserTests.txt

@@ -97,7 +97,7 @@ Explicitly specified timezone: America/New_York (UTC-5)
 !! end
 
 !! test
-Explicitely specified output language (Dutch)
+Explicitly specified output language (Dutch)
 !! wikitext
 {{#time:d F Y|1988-02-28|nl}}
 !! html
@@ -105,6 +105,71 @@ Explicitely specified output language (Dutch)
 </p>
 !! end
 
+!! test
+#timef: one parameter
+!! wikitext
+{{#timef:15 January 2001}}
+!! html
+<p>00:00, 15 January 2001
+</p>
+!! end
+
+!! test
+#timef: date only
+!! wikitext
+{{#timef:15 January 2001|date}}
+!! html
+<p>15 January 2001
+</p>
+!! end
+
+!! test
+#timef: time only
+!! wikitext
+{{#timef:15 January 2001|time}}
+!! html
+<p>00:00
+</p>
+!! end
+
+!! test
+#timef: "pretty" format
+!! wikitext
+{{#timef:15 January 2001|pretty}}
+!! html
+<p>15 January
+</p>
+!! end
+
+!! test
+#timef: Japanese target language
+!! options
+language=ja
+!! wikitext
+{{#timef:15 January 2001}}
+!! html
+<p>2001年1月15日 (月) 00:00
+</p>
+!! end
+
+!! test
+#timef: ja parameter
+!! wikitext
+{{#timef:15 January 2001|both|ja}}
+!! html
+<p>2001年1月15日 (月) 00:00
+</p>
+!! end
+
+!! test
+#timefl: one parameter (can't actually customise timezone)
+!! wikitext
+{{#timefl:15 January 2001}}
+!! html
+<p>00:00, 15 January 2001
+</p>
+!! end
+
 !! test
 #titleparts
 !! wikitext