includes/parser/ParserOptions.php

   1 <?php
   2 /**
   3  * Options for the PHP parser
   4  *
   5  * @file
   6  * @ingroup Parser
   7  */
   8
   9 /**
  10  * Set options of the Parser
  11  * @todo document
  12  * @ingroup Parser
  13  */
  14 class ParserOptions {
  15         # All variables are supposed to be private in theory, although in practise this is not the case.
  16         var $mUseDynamicDates;           # Use DateFormatter to format dates
  17         var $mInterwikiMagic;            # Interlanguage links are removed and returned in an array
  18         var $mAllowExternalImages;       # Allow external images inline
  19         var $mAllowExternalImagesFrom;   # If not, any exception?
  20         var $mEnableImageWhitelist;      # If not or it doesn't match, should we check an on-wiki whitelist?
  21         var $mSkin;                      # Reference to the preferred skin
  22         var $mDateFormat;                # Date format index
  23         var $mEditSection;               # Create "edit section" links
  24         var $mNumberHeadings;            # Automatically number headings
  25         var $mAllowSpecialInclusion;     # Allow inclusion of special pages
  26         var $mTidy;                      # Ask for tidy cleanup
  27         var $mInterfaceMessage;          # Which lang to call for PLURAL and GRAMMAR
  28         var $mTargetLanguage;            # Overrides above setting with arbitrary language
  29         var $mMaxIncludeSize;            # Maximum size of template expansions, in bytes
  30         var $mMaxPPNodeCount;            # Maximum number of nodes touched by PPFrame::expand()
  31         var $mMaxPPExpandDepth;          # Maximum recursion depth in PPFrame::expand()
  32         var $mMaxTemplateDepth;          # Maximum recursion depth for templates within templates
  33         var $mRemoveComments;            # Remove HTML comments. ONLY APPLIES TO PREPROCESS OPERATIONS
  34         var $mTemplateCallback;          # Callback for template fetching
  35         var $mEnableLimitReport;         # Enable limit report in an HTML comment on output
  36         var $mTimestamp;                 # Timestamp used for {{CURRENTDAY}} etc.
  37         var $mExternalLinkTarget;        # Target attribute for external links
  38         var $mMath;                      # User math preference (as integer)
  39         var $mUserLang;                  # Language code of the User language.
  40         var $mThumbSize;                 # Thumb size preferred by the user.
  41         var $mCleanSignatures;           #
  42
  43         var $mUser;                      # Stored user object, just used to initialise the skin
  44         var $mIsPreview;                 # Parsing the page for a "preview" operation
  45         var $mIsSectionPreview;          # Parsing the page for a "preview" operation on a single section
  46         var $mIsPrintable;               # Parsing the printable version of the page
  47
  48         var $mExtraKey = '';             # Extra key that should be present in the caching key.
  49
  50         protected $onAccessCallback = null;
  51
  52         function getUseDynamicDates()               { return $this->mUseDynamicDates; }
  53         function getInterwikiMagic()                { return $this->mInterwikiMagic; }
  54         function getAllowExternalImages()           { return $this->mAllowExternalImages; }
  55         function getAllowExternalImagesFrom()       { return $this->mAllowExternalImagesFrom; }
  56         function getEnableImageWhitelist()          { return $this->mEnableImageWhitelist; }
  57         function getEditSection()                   { $this->optionUsed('editsection');
  58                                                       return $this->mEditSection; }
  59         function getNumberHeadings()                { $this->optionUsed('numberheadings');
  60                                                       return $this->mNumberHeadings; }
  61         function getAllowSpecialInclusion()         { return $this->mAllowSpecialInclusion; }
  62         function getTidy()                          { return $this->mTidy; }
  63         function getInterfaceMessage()              { return $this->mInterfaceMessage; }
  64         function getTargetLanguage()                { return $this->mTargetLanguage; }
  65         function getMaxIncludeSize()                { return $this->mMaxIncludeSize; }
  66         function getMaxPPNodeCount()                { return $this->mMaxPPNodeCount; }
  67         function getMaxPPExpandDepth()              { return $this->mMaxPPExpandDepth; }
  68         function getMaxTemplateDepth()              { return $this->mMaxTemplateDepth; }
  69         function getRemoveComments()                { return $this->mRemoveComments; }
  70         function getTemplateCallback()              { return $this->mTemplateCallback; }
  71         function getEnableLimitReport()             { return $this->mEnableLimitReport; }
  72         function getCleanSignatures()               { return $this->mCleanSignatures; }
  73         function getExternalLinkTarget()            { return $this->mExternalLinkTarget; }
  74         function getMath()                          { $this->optionUsed('math');
  75                                                       return $this->mMath; }
  76         function getThumbSize()                     { $this->optionUsed('thumbsize');
  77                                                       return $this->mThumbSize; }
  78
  79         function getIsPreview()                     { return $this->mIsPreview; }
  80         function getIsSectionPreview()              { return $this->mIsSectionPreview; }
  81         function getIsPrintable()                   { $this->optionUsed('printable');
  82                                                       return $this->mIsPrintable; }
  83
  84         function getSkin( $title = null ) {
  85                 if ( !isset( $this->mSkin ) ) {
  86                         $this->mSkin = $this->mUser->getSkin( $title );
  87                 }
  88                 return $this->mSkin;
  89         }
  90
  91         function getDateFormat() {
  92                 $this->optionUsed('dateformat');
  93                 if ( !isset( $this->mDateFormat ) ) {
  94                         $this->mDateFormat = $this->mUser->getDatePreference();
  95                 }
  96                 return $this->mDateFormat;
  97         }
  98
  99         function getTimestamp() {
 100                 if ( !isset( $this->mTimestamp ) ) {
 101                         $this->mTimestamp = wfTimestampNow();
 102                 }
 103                 return $this->mTimestamp;
 104         }
 105
 106         /**
 107          * You shouldn't use this. Really. $parser->getFunctionLang() is all you need.
 108          * Using this fragments the cache and is discouraged. Yes, {{int: }} uses this,
 109          * producing inconsistent tables (Bug 14404).
 110          */
 111         function getUserLang() {
 112                 $this->optionUsed('userlang');
 113                 return $this->mUserLang;
 114         }
 115
 116         function setUseDynamicDates( $x )           { return wfSetVar( $this->mUseDynamicDates, $x ); }
 117         function setInterwikiMagic( $x )            { return wfSetVar( $this->mInterwikiMagic, $x ); }
 118         function setAllowExternalImages( $x )       { return wfSetVar( $this->mAllowExternalImages, $x ); }
 119         function setAllowExternalImagesFrom( $x )   { return wfSetVar( $this->mAllowExternalImagesFrom, $x ); }
 120         function setEnableImageWhitelist( $x )      { return wfSetVar( $this->mEnableImageWhitelist, $x ); }
 121         function setDateFormat( $x )                { return wfSetVar( $this->mDateFormat, $x ); }
 122         function setEditSection( $x )               { return wfSetVar( $this->mEditSection, $x ); }
 123         function setNumberHeadings( $x )            { return wfSetVar( $this->mNumberHeadings, $x ); }
 124         function setAllowSpecialInclusion( $x )     { return wfSetVar( $this->mAllowSpecialInclusion, $x ); }
 125         function setTidy( $x )                      { return wfSetVar( $this->mTidy, $x); }
 126         function setSkin( $x )                      { $this->mSkin = $x; }
 127         function setInterfaceMessage( $x )          { return wfSetVar( $this->mInterfaceMessage, $x); }
 128         function setTargetLanguage( $x )            { return wfSetVar( $this->mTargetLanguage, $x, true ); }
 129         function setMaxIncludeSize( $x )            { return wfSetVar( $this->mMaxIncludeSize, $x ); }
 130         function setMaxPPNodeCount( $x )            { return wfSetVar( $this->mMaxPPNodeCount, $x ); }
 131         function setMaxTemplateDepth( $x )          { return wfSetVar( $this->mMaxTemplateDepth, $x ); }
 132         function setRemoveComments( $x )            { return wfSetVar( $this->mRemoveComments, $x ); }
 133         function setTemplateCallback( $x )          { return wfSetVar( $this->mTemplateCallback, $x ); }
 134         function enableLimitReport( $x = true )     { return wfSetVar( $this->mEnableLimitReport, $x ); }
 135         function setTimestamp( $x )                 { return wfSetVar( $this->mTimestamp, $x ); }
 136         function setCleanSignatures( $x )           { return wfSetVar( $this->mCleanSignatures, $x ); }
 137         function setExternalLinkTarget( $x )        { return wfSetVar( $this->mExternalLinkTarget, $x ); }
 138         function setMath( $x )                      { return wfSetVar( $this->mMath, $x ); }
 139         function setUserLang( $x )                  { return wfSetVar( $this->mUserLang, $x ); }
 140         function setThumbSize( $x )                 { return wfSetVar( $this->mThumbSize, $x ); }
 141
 142         function setIsPreview( $x )                 { return wfSetVar( $this->mIsPreview, $x ); }
 143         function setIsSectionPreview( $x )          { return wfSetVar( $this->mIsSectionPreview, $x ); }
 144         function setIsPrintable( $x )               { return wfSetVar( $this->mIsPrintable, $x ); }
 145
 146         /**
 147          * Extra key that should be present in the parser cache key.
 148          */
 149         function addExtraKey( $key ) {
 150                 $this->mExtraKey .= '!' . $key;
 151         }
 152
 153         function __construct( $user = null ) {
 154                 $this->initialiseFromUser( $user );
 155         }
 156
 157         /**
 158          * Get parser options
 159          *
 160          * @param $user User object
 161          * @return ParserOptions object
 162          */
 163         static function newFromUser( $user ) {
 164                 return new ParserOptions( $user );
 165         }
 166
 167         /** Get user options */
 168         function initialiseFromUser( $userInput ) {
 169                 global $wgUseDynamicDates, $wgInterwikiMagic, $wgAllowExternalImages;
 170                 global $wgAllowExternalImagesFrom, $wgEnableImageWhitelist, $wgAllowSpecialInclusion, $wgMaxArticleSize;
 171                 global $wgMaxPPNodeCount, $wgMaxTemplateDepth, $wgMaxPPExpandDepth, $wgCleanSignatures;
 172                 global $wgExternalLinkTarget, $wgLang;
 173
 174                 wfProfileIn( __METHOD__ );
 175
 176                 if ( !$userInput ) {
 177                         global $wgUser;
 178                         if ( isset( $wgUser ) ) {
 179                                 $user = $wgUser;
 180                         } else {
 181                                 $user = new User;
 182                         }
 183                 } else {
 184                         $user =& $userInput;
 185                 }
 186
 187                 $this->mUser = $user;
 188
 189                 $this->mUseDynamicDates = $wgUseDynamicDates;
 190                 $this->mInterwikiMagic = $wgInterwikiMagic;
 191                 $this->mAllowExternalImages = $wgAllowExternalImages;
 192                 $this->mAllowExternalImagesFrom = $wgAllowExternalImagesFrom;
 193                 $this->mEnableImageWhitelist = $wgEnableImageWhitelist;
 194                 $this->mSkin = null; # Deferred
 195                 $this->mDateFormat = null; # Deferred
 196                 $this->mEditSection = true;
 197                 $this->mNumberHeadings = $user->getOption( 'numberheadings' );
 198                 $this->mAllowSpecialInclusion = $wgAllowSpecialInclusion;
 199                 $this->mTidy = false;
 200                 $this->mInterfaceMessage = false;
 201                 $this->mTargetLanguage = null; // default depends on InterfaceMessage setting
 202                 $this->mMaxIncludeSize = $wgMaxArticleSize * 1024;
 203                 $this->mMaxPPNodeCount = $wgMaxPPNodeCount;
 204                 $this->mMaxPPExpandDepth = $wgMaxPPExpandDepth;
 205                 $this->mMaxTemplateDepth = $wgMaxTemplateDepth;
 206                 $this->mRemoveComments = true;
 207                 $this->mTemplateCallback = array( 'Parser', 'statelessFetchTemplate' );
 208                 $this->mEnableLimitReport = false;
 209                 $this->mCleanSignatures = $wgCleanSignatures;
 210                 $this->mExternalLinkTarget = $wgExternalLinkTarget;
 211                 $this->mMath = $user->getOption( 'math' );
 212                 $this->mUserLang = $wgLang->getCode();
 213                 $this->mThumbSize = $user->getOption( 'thumbsize' );
 214
 215                 $this->mIsPreview = false;
 216                 $this->mIsSectionPreview = false;
 217                 $this->mIsPrintable = false;
 218
 219                 wfProfileOut( __METHOD__ );
 220         }
 221
 222         /**
 223          * Registers a callback for tracking which ParserOptions which are used.
 224          * This is a private API with the parser.
 225          */
 226         function registerWatcher( $callback ) {
 227                 $this->onAccessCallback = $callback;
 228         }
 229
 230         /**
 231          * Called when an option is accessed.
 232          */
 233         protected function optionUsed( $optionName ) {
 234                 if ( $this->onAccessCallback ) {
 235                         call_user_func( $this->onAccessCallback, $optionName );
 236                 }
 237         }
 238
 239         /**
 240          * Returns the full array of options that would have been used by
 241          * in 1.16.
 242          * Used to get the old parser cache entries when available.
 243          */
 244         public static function legacyOptions() {
 245                 global $wgUseDynamicDates;
 246                 $legacyOpts = array( 'math', 'stubthreshold', 'numberheadings', 'userlang', 'thumbsize', 'editsection', 'printable' );
 247                 if ( $wgUseDynamicDates ) {
 248                         $legacyOpts[] = 'dateformat';
 249                 }
 250                 return $legacyOpts;
 251         }
 252
 253         /**
 254          * Generate a hash string with the values set on these ParserOptions
 255          * for the keys given in the array.
 256          * This will be used as part of the hash key for the parser cache,
 257          * so users sharign the options with vary for the same page share
 258          * the same cached data safely.
 259          *
 260          * Replaces User::getPageRenderingHash()
 261          *
 262          * Extensions which require it should install 'PageRenderingHash' hook,
 263          * which will give them a chance to modify this key based on their own
 264          * settings.
 265          *
 266          * @since 1.17
 267          * @return \string Page rendering hash
 268          */
 269         public function optionsHash( $forOptions ) {
 270                 global $wgContLang, $wgRenderHashAppend;
 271
 272                 $confstr = '';
 273
 274                 if ( in_array( 'math', $forOptions ) )
 275                         $confstr .= $this->mMath;
 276                 else
 277                         $confstr .= '*';
 278
 279
 280                 // Space assigned for the stubthreshold but unused
 281                 // since it disables the parser cache, its value will always
 282                 // be 0 when this function is called by parsercache.
 283                 // The conditional is here to avoid a confusing 0
 284                 if ( true || in_array( 'stubthreshold', $forOptions ) )
 285                         $confstr .= '!0' ;
 286                 else
 287                         $confstr .= '!*' ;
 288
 289                 if ( in_array( 'dateformat', $forOptions ) )
 290                         $confstr .= '!' . $this->getDateFormat();
 291
 292                 if ( in_array( 'numberheadings', $forOptions ) )
 293                         $confstr .= '!' . ( $this->mNumberHeadings ? '1' : '' );
 294                 else
 295                         $confstr .= '!*';
 296
 297                 if ( in_array( 'userlang', $forOptions ) )
 298                         $confstr .= '!' . $this->mUserLang;
 299                 else
 300                         $confstr .= '!*';
 301
 302                 if ( in_array( 'thumbsize', $forOptions ) )
 303                         $confstr .= '!' . $this->mThumbSize;
 304                 else
 305                         $confstr .= '!*';
 306
 307                 // add in language specific options, if any
 308                 // FIXME: This is just a way of retrieving the url/user preferred variant
 309                 $confstr .= $wgContLang->getExtraHashOptions();
 310
 311                 // Since the skin could be overloading link(), it should be
 312                 // included here but in practice, none of our skins do that.
 313                 // $confstr .= "!" . $this->mSkin->getSkinName();
 314
 315                 $confstr .= $wgRenderHashAppend;
 316
 317                 if ( !in_array( 'editsection', $forOptions ) ) {
 318                         $confstr .= '!*';
 319                 } elseif ( !$this->mEditSection ) {
 320                         $confstr .= '!edit=0';
 321                 }
 322
 323                 if (  $this->mIsPrintable && in_array( 'printable', $forOptions ) )
 324                         $confstr .= '!printable=1';
 325
 326                 if ( $this->mExtraKey != '' )
 327                         $confstr .= $this->mExtraKey;
 328
 329                 // Give a chance for extensions to modify the hash, if they have
 330                 // extra options or other effects on the parser cache.
 331                 wfRunHooks( 'PageRenderingHash', array( &$confstr ) );
 332
 333                 // Make it a valid memcached key fragment
 334                 $confstr = str_replace( ' ', '_', $confstr );
 335
 336                 return $confstr;
 337         }
 338 }