/**
* Contain a class for special pages
* @package MediaWiki
+ * @subpackage Search
*/
/**
var $limit = 10;
var $offset = 0;
var $searchTerms = array();
- var $namespaces = array( 0 );
+ var $namespaces = array( NS_MAIN );
var $showRedirects = false;
-
+
/**
* Perform a full text search query and return a result set.
+ * If title searches are not supported or disabled, return null.
*
* @param string $term - Raw search term
- * @param array $namespaces - List of namespaces to search
- * @return ResultWrapper
+ * @return SearchResultSet
* @access public
+ * @abstract
*/
function searchText( $term ) {
- return $this->db->resultObject( $this->db->query( $this->getQuery( $this->filter( $term ), true ) ) );
+ return null;
}
/**
* Perform a title-only search query and return a result set.
+ * If title searches are not supported or disabled, return null.
*
* @param string $term - Raw search term
- * @param array $namespaces - List of namespaces to search
- * @return ResultWrapper
+ * @return SearchResultSet
* @access public
+ * @abstract
*/
function searchTitle( $term ) {
- return $this->db->resultObject( $this->db->query( $this->getQuery( $this->filter( $term ), false ) ) );
+ return null;
}
-
+
/**
* If an exact title match can be find, or a very slightly close match,
* return the title. If no match, returns NULL.
*
+ * @static
* @param string $term
* @return Title
- * @access private
+ * @private
*/
function getNearMatch( $term ) {
- # Eliminate Blanks at start
- $term = ereg_replace('[[:blank:]]*', '', $term);
-
# Exact match? No need to look further.
$title = Title::newFromText( $term );
- if ( $title->getNamespace() == NS_SPECIAL || 0 != $title->getArticleID() ) {
+ if (is_null($title))
+ return NULL;
+
+ if ( $title->getNamespace() == NS_SPECIAL || $title->exists() ) {
return $title;
}
# Now try all lower case (i.e. first letter capitalized)
#
$title = Title::newFromText( strtolower( $term ) );
- if ( 0 != $title->getArticleID() ) {
+ if ( $title->exists() ) {
return $title;
}
# Now try capitalized string
#
$title = Title::newFromText( ucwords( strtolower( $term ) ) );
- if ( 0 != $title->getArticleID() ) {
+ if ( $title->exists() ) {
return $title;
}
# Now try all upper case
#
$title = Title::newFromText( strtoupper( $term ) );
- if ( 0 != $title->getArticleID() ) {
+ if ( $title->exists() ) {
return $title;
}
- # Entering an IP address goes to the contributions page
- if ( preg_match( '/^(user:)?\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', strtolower($term) ) ) {
- $title = Title::makeTitle( NS_SPECIAL, "Contributions/" . $term );
+ # Now try Word-Caps-Breaking-At-Word-Breaks, for hyphenated names etc
+ $title = Title::newFromText( preg_replace_callback(
+ '/\b([\w\x80-\xff]+)\b/',
+ create_function( '$matches', '
+ global $wgContLang;
+ return $wgContLang->ucfirst($matches[1]);
+ ' ),
+ $term ) );
+ if ( $title->exists() ) {
return $title;
}
+ global $wgCapitalLinks, $wgContLang;
+ if( !$wgCapitalLinks ) {
+ // Catch differs-by-first-letter-case-only
+ $title = Title::newFromText( $wgContLang->ucfirst( $term ) );
+ if ( $title->exists() ) {
+ return $title;
+ }
+ $title = Title::newFromText( $wgContLang->lcfirst( $term ) );
+ if ( $title->exists() ) {
+ return $title;
+ }
+ }
+
+ $title = Title::newFromText( $term );
+
+ # Entering an IP address goes to the contributions page
+ if ( ( $title->getNamespace() == NS_USER && User::isIP($title->getText() ) )
+ || User::isIP( trim( $term ) ) ) {
+ return Title::makeTitle( NS_SPECIAL, "Contributions/" . $title->getDbkey() );
+ }
+
+
# Entering a user goes to the user page whether it's there or not
- if ( preg_match( '/^user:/', strtolower($term) ) ) {
- if (User::idFromName($term)) {
- $title = Title::newFromURL( $term );
- return $title;
- }
+ if ( $title->getNamespace() == NS_USER ) {
+ return $title;
}
-
+
+ # Quoted term? Try without the quotes...
+ if( preg_match( '/^"([^"]+)"$/', $term, $matches ) ) {
+ return SearchEngine::getNearMatch( $matches[1] );
+ }
+
return NULL;
}
-
+
function legalSearchChars() {
return "A-Za-z_'0-9\\x80-\\xFF\\-";
}
* @access public
*/
function setLimitOffset( $limit, $offset = 0 ) {
- $this->limit = IntVal( $limit );
- $this->offset = IntVal( $offset );
+ $this->limit = intval( $limit );
+ $this->offset = intval( $offset );
}
-
+
/**
* Set which namespaces the search should include.
* Give an array of namespace index numbers.
function setNamespaces( $namespaces ) {
$this->namespaces = $namespaces;
}
-
+
/**
* Make a list of searchable namespaces and their canonical names.
* @return array
}
return $arr;
}
-
- /**
- * Fetch an array of regular expression fragments for matching
- * the search terms as parsed by this engine in a text extract.
- *
- * @return array
- * @access public
- */
- function termMatches() {
- return $this->searchTerms;
- }
-
+
/**
* Return a 'cleaned up' search string
*
$lc = $this->legalSearchChars();
return trim( preg_replace( "/[^{$lc}]/", " ", $text ) );
}
-
/**
- * Return a partial WHERE clause to exclude redirects, if so set
- * @return string
- * @access private
+ * Load up the appropriate search engine class for the currently
+ * active database backend, and return a configured instance.
+ *
+ * @return SearchEngine
+ * @private
*/
- function queryRedirect() {
- if( $this->showRedirects ) {
- return 'AND cur_is_redirect=0';
+ function create() {
+ global $wgDBtype, $wgSearchType;
+ if( $wgSearchType ) {
+ $class = $wgSearchType;
+ } elseif( $wgDBtype == 'mysql' ) {
+ $class = 'SearchMySQL4';
+ } else if ( $wgDBtype == 'postgres' ) {
+ $class = 'SearchPostgres';
} else {
- return '';
+ $class = 'SearchEngineDummy';
}
+ $search = new $class( wfGetDB( DB_SLAVE ) );
+ $search->setLimitOffset(0,0);
+ return $search;
}
-
+
/**
- * Return a partial WHERE clause to limit the search to the given namespaces
- * @return string
- * @access private
+ * Create or update the search index record for the given page.
+ * Title and text should be pre-processed.
+ *
+ * @param int $id
+ * @param string $title
+ * @param string $text
+ * @abstract
*/
- function queryNamespaces() {
- $namespaces = implode( ',', $this->namespaces );
- if ($namespaces == '') {
- $namespaces = '0';
- }
- return 'AND page_namespace IN (' . $namespaces . ')';
+ function update( $id, $title, $text ) {
+ // no-op
}
-
+
/**
- * Return a LIMIT clause to limit results on the query.
- * @return string
- * @access private
+ * Update a search index record's title only.
+ * Title should be pre-processed.
+ *
+ * @param int $id
+ * @param string $title
+ * @abstract
+ */
+ function updateTitle( $id, $title ) {
+ // no-op
+ }
+}
+
+/** @package MediaWiki */
+class SearchResultSet {
+ /**
+ * Fetch an array of regular expression fragments for matching
+ * the search terms as parsed by this engine in a text extract.
+ *
+ * @return array
+ * @access public
+ * @abstract
+ */
+ function termMatches() {
+ return array();
+ }
+
+ function numRows() {
+ return 0;
+ }
+
+ /**
+ * Return true if results are included in this result set.
+ * @return bool
+ * @abstract
+ */
+ function hasResults() {
+ return false;
+ }
+
+ /**
+ * Some search modes return a total hit count for the query
+ * in the entire article database. This may include pages
+ * in namespaces that would not be matched on the given
+ * settings.
+ *
+ * Return null if no total hits number is supported.
+ *
+ * @return int
+ * @access public
+ */
+ function getTotalHits() {
+ return null;
+ }
+
+ /**
+ * Some search modes return a suggested alternate term if there are
+ * no exact hits. Returns true if there is one on this set.
+ *
+ * @return bool
+ * @access public
*/
- function queryLimit() {
- return $this->db->limitResult( $this->limit, $this->offset );
+ function hasSuggestion() {
+ return false;
}
/**
- * Does not do anything for generic search engine
- * subclasses may define this though
+ * Some search modes return a suggested alternate term if there are
+ * no exact hits. Check hasSuggestion() first.
+ *
* @return string
- * @access private
+ * @access public
*/
- function queryRanking($filteredTerm,$fulltext) {
- return "";
+ function getSuggestion() {
+ return '';
}
-
+
/**
- * Construct the full SQL query to do the search.
- * The guts shoulds be constructed in queryMain()
- * @param string $filteredTerm
- * @param bool $fulltext
- * @access private
+ * Fetches next search result, or false.
+ * @return SearchResult
+ * @access public
+ * @abstract
*/
- function getQuery( $filteredTerm, $fulltext ) {
- return $this->queryMain( $filteredTerm, $fulltext ) . ' ' .
- $this->queryRedirect() . ' ' .
- $this->queryNamespaces() . ' ' .
- $this->queryRanking($filteredTerm, $fulltext) . ' ' .
- $this->queryLimit();
+ function next() {
+ return false;
+ }
+}
+
+/** @package MediaWiki */
+class SearchResult {
+ function SearchResult( $row ) {
+ $this->mTitle = Title::makeTitle( $row->page_namespace, $row->page_title );
}
/**
- * Load up the appropriate search engine class for the currently
- * active database backend, and return a configured instance.
- *
- * @return SearchEngine
- * @access private
- */
- function create() {
- global $wgDBtype, $wgDBmysql4, $wgSearchType;
- if( $wgDBtype == 'mysql' ) {
- if( $wgDBmysql4 ) {
- $class = 'SearchMySQL4';
- require_once( 'SearchMySQL4.php' );
- } else {
- $class = 'SearchMysql3';
- require_once( 'SearchMySQL3.php' );
- }
- } else if ( $wgDBtype == 'PostgreSQL' ) {
- $class = 'SearchTsearch2';
- require_once( 'SearchTsearch2.php' );
- } else {
- $class = 'SearchEngineDummy';
- }
- $search = new $class( wfGetDB( DB_SLAVE ) );
- $search->setLimitOffset(0,0);
- return $search;
+ * @return Title
+ * @access public
+ */
+ function getTitle() {
+ return $this->mTitle;
}
-
+ /**
+ * @return double or null if not supported
+ */
+ function getScore() {
+ return null;
+ }
}
/**
function search( $term ) {
return null;
}
+ function setLimitOffset($l, $o) {}
+ function legalSearchChars() {}
+ function update() {}
+ function setnamespaces() {}
+ function searchtitle() {}
+ function searchtext() {}
}
-
+?>
dépôts / lhc / web / wiklou.git / blobdiff