Commit stuff from my w/c
[lhc/web/wiklou.git] / includes / api / ApiQueryImageInfo.php
index 17cb2fa..2701730 100644 (file)
@@ -1,9 +1,8 @@
 <?php
-
 /**
- * Created on July 6, 2007
  *
- * API for MediaWiki 1.8+
+ *
+ * Created on July 6, 2007
  *
  * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
  *
@@ -21,6 +20,8 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  */
 
 if ( !defined( 'MEDIAWIKI' ) ) {
@@ -35,8 +36,13 @@ if ( !defined( 'MEDIAWIKI' ) ) {
  */
 class ApiQueryImageInfo extends ApiQueryBase {
 
-       public function __construct( $query, $moduleName ) {
-               parent::__construct( $query, $moduleName, 'ii' );
+       public function __construct( $query, $moduleName, $prefix = 'ii' ) {
+               // We allow a subclass to override the prefix, to create a related API module.
+               // Some other parts of MediaWiki construct this with a null $prefix, which used to be ignored when this only took two arguments
+               if ( is_null( $prefix ) ) {
+                       $prefix = 'ii';
+               }
+               parent::__construct( $query, $moduleName, $prefix );
        }
 
        public function execute() {
@@ -44,17 +50,7 @@ class ApiQueryImageInfo extends ApiQueryBase {
 
                $prop = array_flip( $params['prop'] );
 
-               if ( $params['urlheight'] != - 1 && $params['urlwidth'] == - 1 ) {
-                       $this->dieUsage( 'iiurlheight cannot be used without iiurlwidth', 'iiurlwidth' );
-               }
-
-               if ( $params['urlwidth'] != - 1 ) {
-                       $scale = array();
-                       $scale['width'] = $params['urlwidth'];
-                       $scale['height'] = $params['urlheight'];
-               } else {
-                       $scale = null;
-               }
+               $scale = $this->getScale( $params );
 
                $pageIds = $this->getPageSet()->getAllTitlesByNamespace();
                if ( !empty( $pageIds[NS_FILE] ) ) {
@@ -111,6 +107,9 @@ class ApiQueryImageInfo extends ApiQueryBase {
                                        }
                                        break;
                                }
+                               
+                               // Check if we can make the requested thumbnail, and get transform parameters.
+                               $finalThumbParams = $this->mergeThumbParams( $img, $scale, $params['urlparam'] );
 
                                // Get information about the current version first
                                // Check that the current version is within the start-end boundaries
@@ -118,11 +117,11 @@ class ApiQueryImageInfo extends ApiQueryBase {
                                if (
                                        ( is_null( $start ) || $img->getTimestamp() <= $start ) &&
                                        ( is_null( $params['end'] ) || $img->getTimestamp() >= $params['end'] )
-                               )
-                               {
+                               ) {
                                        $gotOne = true;
+                                       
                                        $fit = $this->addPageSubItem( $pageId,
-                                               self::getInfo( $img, $prop, $result, $scale ) );
+                                               self::getInfo( $img, $prop, $result, $finalThumbParams ) );
                                        if ( !$fit ) {
                                                if ( count( $pageIds[NS_IMAGE] ) == 1 ) {
                                                        // See the 'the user is screwed' comment above
@@ -151,7 +150,7 @@ class ApiQueryImageInfo extends ApiQueryBase {
                                                break;
                                        }
                                        $fit = $this->addPageSubItem( $pageId,
-                                               self::getInfo( $oldie, $prop, $result ) );
+                                               self::getInfo( $oldie, $prop, $result, $finalThumbParams ) );
                                        if ( !$fit ) {
                                                if ( count( $pageIds[NS_IMAGE] ) == 1 ) {
                                                        $this->setContinueEnumParameter( 'start',
@@ -182,22 +181,103 @@ class ApiQueryImageInfo extends ApiQueryBase {
                }
        }
 
+       /**
+        * From parameters, construct a 'scale' array
+        * @param $params Array: Parameters passed to api.
+        * @return Array or Null: key-val array of 'width' and 'height', or null
+        */
+       public function getScale( $params ) {
+               $p = $this->getModulePrefix();
+
+               // Height and width.
+               if ( $params['urlheight'] != -1 && $params['urlwidth'] == -1 ) {
+                       $this->dieUsage( "{$p}urlheight cannot be used without {$p}urlwidth", "{$p}urlwidth" );
+               }
+
+               if ( $params['urlwidth'] != -1 ) {
+                       $scale = array();
+                       $scale['width'] = $params['urlwidth'];
+                       $scale['height'] = $params['urlheight'];
+               } else {
+                       $scale = null;
+                       if ( $params['urlparam'] ) {
+                               $this->dieUsage( "{$p}urlparam requires {$p}urlwidth", "urlparam_no_width" );
+                       }
+                       return $scale;
+               }
+
+               return $scale;
+       }
+
+       /** Validate and merge scale parameters with handler thumb parameters, give error if invalid.
+        *
+        * We do this later than getScale, since we need the image
+        * to know which handler, since handlers can make their own parameters.
+        * @param File $image Image that params are for.
+        * @param Array $thumbParams thumbnail parameters from getScale
+        * @param String String of otherParams (iiurlparam).
+        * @return Array of parameters for transform.
+        */
+       protected function mergeThumbParams ( $image, $thumbParams, $otherParams ) {
+               if ( !$otherParams ) return $thumbParams;
+               $p = $this->getModulePrefix();
+
+               $h = $image->getHandler();
+               if ( !$h ) {
+                       $this->setWarning( 'Could not create thumbnail because ' . 
+                               $image->getName() . ' does not have an associated image handler' );
+                       return $thumbParams;
+               }
+
+               $paramList = $h->parseParamString( $otherParams );
+               if ( !$paramList ) {
+                       // Just set a warning (instead of dieUsage), as in many cases
+                       // we could still render the image using width and height parameters,
+                       // and this type of thing could happen between different versions of
+                       // handlers.
+                       $this->setWarning( "Could not parse {$p}urlparam for " . $image->getName()
+                               . '. Using only width and height' );
+                       return $thumbParams;
+               }
+
+               if ( isset( $paramList['width'] ) ) {
+                       if ( intval( $paramList['width'] ) != intval( $thumbParams['width'] ) ) {
+                               $this->dieUsage( "{$p}urlparam had width of {$paramList['width']} but "
+                                       . "{$p}urlwidth was {$thumbParams['width']}", "urlparam_urlwidth_mismatch" );
+                       }
+               }
+
+               foreach ( $paramList as $name => $value ) {
+                       if ( !$h->validateParam( $name, $value ) ) {
+                               $this->dieUsage( "Invalid value for {$p}urlparam ($name=$value)", "urlparam" );
+                       }
+               }
+
+               return $thumbParams + $paramList;
+       }
+
        /**
         * Get result information for an image revision
         *
         * @param $file File object
         * @param $prop Array of properties to get (in the keys)
         * @param $result ApiResult object
-        * @param $scale Array containing 'width' and 'height' items, or null
+        * @param $thumbParams Array containing 'width' and 'height' items, or null
         * @return Array: result array
         */
-       static function getInfo( $file, $prop, $result, $scale = null ) {
+       static function getInfo( $file, $prop, $result, $thumbParams = null ) {
                $vals = array();
                if ( isset( $prop['timestamp'] ) ) {
                        $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $file->getTimestamp() );
                }
-               if ( isset( $prop['user'] ) ) {
-                       $vals['user'] = $file->getUser();
+               if ( isset( $prop['user'] ) || isset( $prop['userid'] ) ) {
+
+                       if ( isset( $prop['user'] ) ) {
+                               $vals['user'] = $file->getUser();
+                       }
+                       if ( isset( $prop['userid'] ) ) {
+                               $vals['userid'] = $file->getUser( 'id' );
+                       }
                        if ( !$file->getUser( 'id' ) ) {
                                $vals['anon'] = '';
                        }
@@ -206,10 +286,15 @@ class ApiQueryImageInfo extends ApiQueryBase {
                        $vals['size'] = intval( $file->getSize() );
                        $vals['width'] = intval( $file->getWidth() );
                        $vals['height'] = intval( $file->getHeight() );
+
+                       $pageCount = $file->pageCount();
+                       if ( $pageCount !== false ) {
+                               $vals['pagecount'] = $pageCount;
+                       }
                }
                if ( isset( $prop['url'] ) ) {
-                       if ( !is_null( $scale ) && !$file->isOld() ) {
-                               $mto = $file->transform( array( 'width' => $scale['width'], 'height' => $scale['height'] ) );
+                       if ( !is_null( $thumbParams ) ) {
+                               $mto = $file->transform( $thumbParams );
                                if ( $mto && !$mto->isError() ) {
                                        $vals['thumburl'] = wfExpandUrl( $mto->getUrl() );
 
@@ -222,11 +307,13 @@ class ApiQueryImageInfo extends ApiQueryBase {
                                                $vals['thumbwidth'] = intval( $file->getWidth() );
                                                $vals['thumbheight'] = intval( $file->getHeight() );
                                        }
-                                       
+
                                        if ( isset( $prop['thumbmime'] ) ) {
                                                $thumbFile = UnregisteredLocalFile::newFromPath( $mto->getPath(), false );
                                                $vals['thumbmime'] = $thumbFile->getMimeType();
                                        }
+                               } else if ( $mto && $mto->isError() ) {
+                                       $vals['thumberror'] = $mto->toText();
                                }
                        }
                        $vals['url'] = $file->getFullURL();
@@ -235,6 +322,12 @@ class ApiQueryImageInfo extends ApiQueryBase {
                if ( isset( $prop['comment'] ) ) {
                        $vals['comment'] = $file->getDescription();
                }
+               if ( isset( $prop['parsedcomment'] ) ) {
+                       global $wgUser;
+                       $vals['parsedcomment'] = $wgUser->getSkin()->formatComment(
+                                       $file->getDescription(), $file->getTitle() );
+               }
+
                if ( isset( $prop['sha1'] ) ) {
                        $vals['sha1'] = wfBaseConvert( $file->getSha1(), 36, 16, 40 );
                }
@@ -257,6 +350,12 @@ class ApiQueryImageInfo extends ApiQueryBase {
                return $vals;
        }
 
+       /**
+        *
+        * @param $metadata Array
+        * @param $result ApiResult
+        * @return Array
+        */
        public static function processMetaData( $metadata, $result ) {
                $retval = array();
                if ( is_array( $metadata ) ) {
@@ -274,6 +373,14 @@ class ApiQueryImageInfo extends ApiQueryBase {
                return $retval;
        }
 
+       public function getCacheMode( $params ) {
+               return 'public';
+       }
+
+       /**
+        * @param $img File
+        * @return string
+        */
        private function getContinueStr( $img ) {
                return $img->getOriginalTitle()->getText() .
                        '|' .  $img->getTimestamp();
@@ -301,11 +408,15 @@ class ApiQueryImageInfo extends ApiQueryBase {
                        ),
                        'urlwidth' => array(
                                ApiBase::PARAM_TYPE => 'integer',
-                               ApiBase::PARAM_DFLT => - 1
+                               ApiBase::PARAM_DFLT => -1
                        ),
                        'urlheight' => array(
                                ApiBase::PARAM_TYPE => 'integer',
-                               ApiBase::PARAM_DFLT => - 1
+                               ApiBase::PARAM_DFLT => -1
+                       ),
+                       'urlparam' => array(
+                               ApiBase::PARAM_DFLT => '',
+                               ApiBase::PARAM_TYPE => 'string',
                        ),
                        'continue' => null,
                );
@@ -313,12 +424,16 @@ class ApiQueryImageInfo extends ApiQueryBase {
 
        /**
         * Returns all possible parameters to iiprop
+        * @static
+        * @return Array
         */
        public static function getPropertyNames() {
                return array(
                        'timestamp',
                        'user',
+                       'userid',
                        'comment',
+                       'parsedcomment',
                        'url',
                        'size',
                        'dimensions', // For backwards compatibility with Allimages
@@ -331,31 +446,49 @@ class ApiQueryImageInfo extends ApiQueryBase {
                );
        }
 
+       /**
+        * Returns the descriptions for the properties provided by getPropertyNames()
+        *
+        * @static
+        * @return array
+        */
+       public static function getPropertyDescriptions() {
+               return array(
+                               'What image information to get:',
+                               ' timestamp     - Adds timestamp for the uploaded version',
+                               ' user          - Adds the user who uploaded the image version',
+                               ' userid        - Add the user ID that uploaded the image version',
+                               ' comment       - Comment on the version',
+                               ' parsedcomment - Parse the comment on the version',
+                               ' url           - Gives URL to the image and the description page',
+                               ' size          - Adds the size of the image in bytes and the height, width and page count (if applicable)',
+                               ' dimensions    - Alias for size',
+                               ' sha1          - Adds SHA-1 hash for the image',
+                               ' mime          - Adds MIME type of the image',
+                               ' thumbmime     - Adds MIME type of the image thumbnail (requires url)',
+                               ' metadata      - Lists EXIF metadata for the version of the image',
+                               ' archivename   - Adds the file name of the archive version for non-latest versions',
+                               ' bitdepth      - Adds the bit depth of the version',
+                       );
+       }
+
+       /**
+        * Return the API documentation for the parameters.
+        * @return {Array} parameter documentation.
+        */
        public function getParamDescription() {
                $p = $this->getModulePrefix();
                return array(
-                       'prop' => array(
-                               'What image information to get:',
-                               ' timestamp    - Adds timestamp for the uploaded version',
-                               ' user         - Adds user for uploaded the image version',
-                               ' comment      - Comment on the version',
-                               ' url          - Gives URL to the image and the description page',
-                               ' size         - Adds the size of the image in bytes and the height and width',
-                               ' dimensions   - Alias for size',
-                               ' sha1         - Adds sha1 hash for the image',
-                               ' mime         - Adds MIME of the image',
-                               ' thumbmime    - Adss MIME of the image thumbnail (requires url)',
-                               ' metadata     - Lists EXIF metadata for the version of the image',
-                               ' archivename  - Adds the file name of the archive version for non-latest versions',
-                               ' bitdepth     - Adds the bit depth of the version',
-            ),
-                       'limit' => 'How many image revisions to return',
-                       'start' => 'Timestamp to start listing from',
-                       'end' => 'Timestamp to stop listing at',
+                       'prop' => self::getPropertyDescriptions(),
                        'urlwidth' => array( "If {$p}prop=url is set, a URL to an image scaled to this width will be returned.",
                                            'Only the current version of the image can be scaled' ),
                        'urlheight' => "Similar to {$p}urlwidth. Cannot be used without {$p}urlwidth",
-                       'continue' => 'When more results are available, use this to continue',
+                       'urlparam' => array( "A handler specific parameter string. For example, pdf's ",
+                               "might use 'page15-100px'. {$p}urlwidth must be used and be consistent with {$p}urlparam" ),
+                       'limit' => 'How many image revisions to return',
+                       'start' => 'Timestamp to start listing from',
+                       'end' => 'Timestamp to stop listing at',
+                       'continue' => 'If the query response includes a continue value, use it here to get another page of results'
                );
        }
 
@@ -364,8 +497,13 @@ class ApiQueryImageInfo extends ApiQueryBase {
        }
 
        public function getPossibleErrors() {
+               $p = $this->getModulePrefix();
                return array_merge( parent::getPossibleErrors(), array(
-                       array( 'code' => 'iiurlwidth', 'info' => 'iiurlheight cannot be used without iiurlwidth' ),
+                       array( 'code' => "{$p}urlwidth", 'info' => "{$p}urlheight cannot be used without {$p}urlwidth" ),
+                       array( 'code' => 'urlparam', 'info' => "Invalid value for {$p}urlparam" ),
+                       array( 'code' => 'urlparam_no_width', 'info' => "{$p}urlparam requires {$p}urlwidth" ),
+                       array( 'code' => 'urlparam_urlwidth_mismatch', 'info' => "The width set in {$p}urlparm doesnt't " .
+                               "match the one in {$p}urlwidth" ), 
                ) );
        }