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
  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 $accessedOptions;
  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->accessedOptions['editsection'] = true;
  58                                                                                                   return $this->mEditSection; }
  59         function getNumberHeadings()                { $this->accessedOptions['numberheadings'] = true;
  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->accessedOptions['math'] = true;
  75                                                                                                   return $this->mMath; }
  76         function getThumbSize()                     { $this->accessedOptions['thumbsize'] = true;
  77                                                                                                   return $this->mThumbSize; }
  78
  79         function getIsPreview()                     { return $this->mIsPreview; }
  80         function getIsSectionPreview()              { return $this->mIsSectionPreview; }
  81         function getIsPrintable()                   { $this->accessedOptions['printable'] = true;
  82                                                                                                   return $this->mIsPrintable; }
  83         function getUser()                          { return $this->mUser; }
  84
  85         function getSkin( $title = null ) {
  86                 if ( !isset( $this->mSkin ) ) {
  87                         $this->mSkin = $this->mUser->getSkin( $title );
  88                 }
  89                 return $this->mSkin;
  90         }
  91
  92         function getDateFormat() {
  93                 $this->accessedOptions['dateformat'] = true;
  94                 if ( !isset( $this->mDateFormat ) ) {
  95                         $this->mDateFormat = $this->mUser->getDatePreference();
  96                 }
  97                 return $this->mDateFormat;
  98         }
  99
 100         function getTimestamp() {
 101                 if ( !isset( $this->mTimestamp ) ) {
 102                         $this->mTimestamp = wfTimestampNow();
 103                 }
 104                 return $this->mTimestamp;
 105         }
 106
 107         /**
 108          * You shouldn't use this. Really. $parser->getFunctionLang() is all you need.
 109          * Using this fragments the cache and is discouraged. Yes, {{int: }} uses this,
 110          * producing inconsistent tables (Bug 14404).
 111          */
 112         function getUserLang() {
 113                 $this->accessedOptions['userlang'] = true;
 114                 return $this->mUserLang;
 115         }
 116
 117         function setUseDynamicDates( $x )           { return wfSetVar( $this->mUseDynamicDates, $x ); }
 118         function setInterwikiMagic( $x )            { return wfSetVar( $this->mInterwikiMagic, $x ); }
 119         function setAllowExternalImages( $x )       { return wfSetVar( $this->mAllowExternalImages, $x ); }
 120         function setAllowExternalImagesFrom( $x )   { return wfSetVar( $this->mAllowExternalImagesFrom, $x ); }
 121         function setEnableImageWhitelist( $x )      { return wfSetVar( $this->mEnableImageWhitelist, $x ); }
 122         function setDateFormat( $x )                { return wfSetVar( $this->mDateFormat, $x ); }
 123         function setEditSection( $x )               { return wfSetVar( $this->mEditSection, $x ); }
 124         function setNumberHeadings( $x )            { return wfSetVar( $this->mNumberHeadings, $x ); }
 125         function setAllowSpecialInclusion( $x )     { return wfSetVar( $this->mAllowSpecialInclusion, $x ); }
 126         function setTidy( $x )                      { return wfSetVar( $this->mTidy, $x); }
 127         function setSkin( $x )                      { $this->mSkin = $x; }
 128         function setInterfaceMessage( $x )          { return wfSetVar( $this->mInterfaceMessage, $x); }
 129         function setTargetLanguage( $x )            { return wfSetVar( $this->mTargetLanguage, $x); }
 130         function setMaxIncludeSize( $x )            { return wfSetVar( $this->mMaxIncludeSize, $x ); }
 131         function setMaxPPNodeCount( $x )            { return wfSetVar( $this->mMaxPPNodeCount, $x ); }
 132         function setMaxTemplateDepth( $x )          { return wfSetVar( $this->mMaxTemplateDepth, $x ); }
 133         function setRemoveComments( $x )            { return wfSetVar( $this->mRemoveComments, $x ); }
 134         function setTemplateCallback( $x )          { return wfSetVar( $this->mTemplateCallback, $x ); }
 135         function enableLimitReport( $x = true )     { return wfSetVar( $this->mEnableLimitReport, $x ); }
 136         function setTimestamp( $x )                 { return wfSetVar( $this->mTimestamp, $x ); }
 137         function setCleanSignatures( $x )           { return wfSetVar( $this->mCleanSignatures, $x ); }
 138         function setExternalLinkTarget( $x )        { return wfSetVar( $this->mExternalLinkTarget, $x ); }
 139         function setMath( $x )                      { return wfSetVar( $this->mMath, $x ); }
 140         function setUserLang( $x )                  { return wfSetVar( $this->mUserLang, $x ); }
 141         function setThumbSize( $x )                 { return wfSetVar( $this->mThumbSize, $x ); }
 142
 143         function setIsPreview( $x )                 { return wfSetVar( $this->mIsPreview, $x ); }
 144         function setIsSectionPreview( $x )          { return wfSetVar( $this->mIsSectionPreview, $x ); }
 145         function setIsPrintable( $x )               { return wfSetVar( $this->mIsPrintable, $x ); }
 146
 147         /**
 148          * Extra key that should be present in the parser cache key.
 149          */
 150         function addExtraKey( $key ) {
 151                 $this->mExtraKey .= '!' . $key;
 152         }
 153
 154         function __construct( $user = null ) {
 155                 $this->initialiseFromUser( $user );
 156         }
 157
 158         /**
 159          * Get parser options
 160          *
 161          * @param $user User object
 162          * @return ParserOptions object
 163          */
 164         static function newFromUser( $user ) {
 165                 return new ParserOptions( $user );
 166         }
 167
 168         /** Get user options */
 169         function initialiseFromUser( $userInput ) {
 170                 global $wgUseDynamicDates, $wgInterwikiMagic, $wgAllowExternalImages;
 171                 global $wgAllowExternalImagesFrom, $wgEnableImageWhitelist, $wgAllowSpecialInclusion, $wgMaxArticleSize;
 172                 global $wgMaxPPNodeCount, $wgMaxTemplateDepth, $wgMaxPPExpandDepth, $wgCleanSignatures;
 173                 global $wgExternalLinkTarget, $wgLang;
 174
 175                 wfProfileIn( __METHOD__ );
 176
 177                 if ( !$userInput ) {
 178                         global $wgUser;
 179                         if ( isset( $wgUser ) ) {
 180                                 $user = $wgUser;
 181                         } else {
 182                                 $user = new User;
 183                         }
 184                 } else {
 185                         $user =& $userInput;
 186                 }
 187
 188                 $this->mUser = $user;
 189
 190                 $this->mUseDynamicDates = $wgUseDynamicDates;
 191                 $this->mInterwikiMagic = $wgInterwikiMagic;
 192                 $this->mAllowExternalImages = $wgAllowExternalImages;
 193                 $this->mAllowExternalImagesFrom = $wgAllowExternalImagesFrom;
 194                 $this->mEnableImageWhitelist = $wgEnableImageWhitelist;
 195                 $this->mSkin = null; # Deferred
 196                 $this->mDateFormat = null; # Deferred
 197                 $this->mEditSection = true;
 198                 $this->mNumberHeadings = $user->getOption( 'numberheadings' );
 199                 $this->mAllowSpecialInclusion = $wgAllowSpecialInclusion;
 200                 $this->mTidy = false;
 201                 $this->mInterfaceMessage = false;
 202                 $this->mTargetLanguage = null; // default depends on InterfaceMessage setting
 203                 $this->mMaxIncludeSize = $wgMaxArticleSize * 1024;
 204                 $this->mMaxPPNodeCount = $wgMaxPPNodeCount;
 205                 $this->mMaxPPExpandDepth = $wgMaxPPExpandDepth;
 206                 $this->mMaxTemplateDepth = $wgMaxTemplateDepth;
 207                 $this->mRemoveComments = true;
 208                 $this->mTemplateCallback = array( 'Parser', 'statelessFetchTemplate' );
 209                 $this->mEnableLimitReport = false;
 210                 $this->mCleanSignatures = $wgCleanSignatures;
 211                 $this->mExternalLinkTarget = $wgExternalLinkTarget;
 212                 $this->mMath = $user->getOption( 'math' );
 213                 $this->mUserLang = $wgLang->getCode();
 214                 $this->mThumbSize = $user->getOption( 'thumbsize' );
 215
 216                 $this->mIsPreview = false;
 217                 $this->mIsSectionPreview = false;
 218                 $this->mIsPrintable = false;
 219
 220                 wfProfileOut( __METHOD__ );
 221         }
 222
 223         /**
 224          * Returns the options from this ParserOptions which have been used.
 225          */
 226         public function usedOptions() {
 227                 return array_keys( $this->accessedOptions );
 228         }
 229
 230         /**
 231          * Resets the memory of options usage.
 232          */
 233         public function resetUsage() {
 234                 $this->accessedOptions = array();
 235         }
 236
 237         /**
 238          * Returns the full array of options that would have been used by
 239          * in 1.16.
 240          * Used to get the old parser cache entries when available.
 241          */
 242         public static function legacyOptions() {
 243                 global $wgUseDynamicDates;
 244                 $legacyOpts = array( 'math', 'stubthreshold', 'numberheadings', 'userlang', 'thumbsize', 'editsection', 'printable' );
 245                 if ( $wgUseDynamicDates ) {
 246                         $legacyOpts[] = 'dateformat';
 247                 }
 248                 return $legacyOpts;
 249         }
 250
 251         /**
 252          * Generate a hash string with the values set on these ParserOptions
 253          * for the keys given in the array.
 254          * This will be used as part of the hash key for the parser cache,
 255          * so users sharign the options with vary for the same page share
 256          * the same cached data safely.
 257          *
 258          * Replaces User::getPageRenderingHash()
 259          *
 260          * Extensions which require it should install 'PageRenderingHash' hook,
 261          * which will give them a chance to modify this key based on their own
 262          * settings.
 263          *
 264          * @since 1.17
 265          * @return \string Page rendering hash
 266          */
 267         public function optionsHash( $forOptions ) {
 268                 global $wgContLang, $wgRenderHashAppend;
 269
 270                 $confstr = '';
 271
 272                 if ( in_array( 'math', $forOptions ) )
 273                         $confstr .= $this->mMath;
 274                 else
 275                         $confstr .= '*';
 276
 277
 278                 // Space assigned for the stubthreshold but unused
 279                 // since it disables the parser cache, its value will always
 280                 // be 0 when this function is called by parsercache.
 281                 // The conditional is here to avoid a confusing 0
 282                 if ( in_array( 'stubthreshold', $forOptions ) )
 283                         $confstr .= '!0' ;
 284                 else
 285                         $confstr .= '!*' ;
 286
 287                 if ( in_array( 'dateformat', $forOptions ) )
 288                         $confstr .= '!' . $this->getDateFormat();
 289
 290                 if ( in_array( 'numberheadings', $forOptions ) )
 291                         $confstr .= '!' . ( $this->mNumberHeadings ? '1' : '' );
 292                 else
 293                         $confstr .= '!*';
 294
 295                 if ( in_array( 'userlang', $forOptions ) )
 296                         $confstr .= '!' . $this->mUserLang;
 297                 else
 298                         $confstr .= '!*';
 299
 300                 if ( in_array( 'thumbsize', $forOptions ) )
 301                         $confstr .= '!' . $this->mThumbSize;
 302                 else
 303                         $confstr .= '!*';
 304
 305                 // add in language specific options, if any
 306                 // FIXME: This is just a way of retrieving the url/user preferred variant
 307                 $confstr .= $wgContLang->getExtraHashOptions();
 308
 309                 // Since the skin could be overloading link(), it should be
 310                 // included here but in practice, none of our skins do that.
 311                 // $confstr .= "!" . $this->mSkin->getSkinName();
 312
 313                 $confstr .= $wgRenderHashAppend;
 314
 315                 if ( !$this->mEditSection && in_array( 'editsection', $forOptions ) )
 316                         $confstr .= '!edit=0';
 317                 if (  $this->mIsPrintable && in_array( 'printable', $forOptions ) )
 318                         $confstr .= '!printable=1';
 319
 320                 if ( $this->mExtraKey != '' )
 321                         $confstr .= $this->mExtraKey;
 322
 323                 // Give a chance for extensions to modify the hash, if they have
 324                 // extra options or other effects on the parser cache.
 325                 wfRunHooks( 'PageRenderingHash', array( &$confstr ) );
 326
 327                 // Make it a valid memcached key fragment
 328                 $confstr = str_replace( ' ', '_', $confstr );
 329
 330                 return $confstr;
 331         }
 332 }