includes/Title.php

   1 <?
   2 # See title.doc
   3 global $IP;
   4 include_once( "$IP/Interwiki.php" );
   5
   6 class Title {
   7         /* private */ var $mTextform, $mUrlform, $mDbkeyform;
   8         /* private */ var $mNamespace, $mInterwiki, $mFragment;
   9         /* private */ var $mArticleID, $mRestrictions, $mRestrictionsLoaded;
  10
  11         /* private */ function Title()
  12         {
  13                 $this->mInterwiki = $this->mUrlform =
  14                 $this->mTextform = $this->mDbkeyform = "";
  15                 $this->mArticleID = -1;
  16                 $this->mNamespace = 0;
  17                 $this->mRestrictionsLoaded = false;
  18                 $this->mRestrictions = array();
  19         }
  20
  21         # Static factory methods
  22         #
  23         function newFromDBkey( $key )
  24         {
  25                 $t = new Title();
  26                 $t->mDbkeyform = $key;
  27                 $t->secureAndSplit();
  28                 return $t;
  29         }
  30
  31         function newFromText( $text )
  32         {
  33                 # Note - mixing latin1 named entities and unicode numbered
  34                 # ones will result in a bad link.
  35                 $trans = get_html_translation_table( HTML_ENTITIES );
  36                 $trans = array_flip( $trans );
  37                 $text = strtr( $text, $trans );
  38
  39                 $text = wfMungeToUtf8( $text );
  40
  41                 $text = urldecode( $text );
  42
  43                 $t = new Title();
  44                 $t->mDbkeyform = str_replace( " ", "_", $text );
  45                 $t->secureAndSplit();
  46                 return $t;
  47         }
  48
  49         function newFromURL( $url )
  50         {
  51                 global $wgLang, $wgServer, $HTTP_SERVER_VARS;
  52
  53                 $t = new Title();
  54                 $s = urldecode( $url ); # This is technically wrong, as anything
  55                                                                 # we've gotten is already decoded by PHP.
  56                                                                 # Kept for backwards compatibility with
  57                                                                 # buggy URLs we had for a while...
  58
  59                 # For links that came from outside, check for alternate/legacy
  60                 # character encoding.
  61                 if( strncmp($wgServer, $HTTP_SERVER_VARS["HTTP_REFERER"], strlen( $wgServer ) ) )
  62                         $s = $wgLang->checkTitleEncoding( $s );
  63
  64                 $t->mDbkeyform = str_replace( " ", "_", $s );
  65                 $t->secureAndSplit();
  66                 return $t;
  67         }
  68
  69         function legalChars()
  70         {
  71                 return "-,.()' &;%!?_0-9A-Za-z\\/:\\x80-\\xFF";
  72         }
  73
  74         function getInterwikiLink( $key )
  75         {
  76                 global $wgValidInterwikis;
  77
  78                 if ( array_key_exists( $key, $wgValidInterwikis ) ) {
  79                         return $wgValidInterwikis[$key];
  80                 } else return "";
  81         }
  82
  83         function getText() { return $this->mTextform; }
  84         function getURL() { return $this->mUrlform; }
  85         function getDBkey() { return $this->mDbkeyform; }
  86         function getNamespace() { return $this->mNamespace; }
  87         function setNamespace( $n ) { $this->mNamespace = $n; }
  88         function getInterwiki() { return $this->mInterwiki; }
  89         function getFragment() { return $this->mFragment; }
  90
  91         /* static */ function indexTitle( $ns, $title )
  92         {
  93                 global $wgDBminWordLen, $wgLang;
  94
  95                 $lc = SearchEngine::legalSearchChars() . "&#;";
  96                 $t = $wgLang->stripForSearch( $title );
  97                 $t = preg_replace( "/[^{$lc}]+/", " ", $t );
  98                 $t = strtolower( $t );
  99
 100                 # Handle 's, s'
 101                 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
 102                 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
 103
 104                 $t = preg_replace( "/\\s+/", " ", $t );
 105
 106                 if ( $ns == Namespace::getImage() ) {
 107                         $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
 108                 }
 109                 return trim( $t );
 110         }
 111
 112         function getIndexTitle()
 113         {
 114                 return Title::indexTitle( $this->mNamespace, $this->mTextform );
 115         }
 116
 117         /* static */ function makeName( $ns, $title )
 118         {
 119                 global $wgLang;
 120
 121                 $n = $wgLang->getNsText( $ns );
 122                 if ( "" == $n ) { return $title; }
 123                 else { return "{$n}:{$title}"; }
 124         }
 125
 126         function getPrefixedDBkey()
 127         {
 128                 $s = $this->prefix( $this->mDbkeyform );
 129                 $s = str_replace( " ", "_", $s );
 130                 return $s;
 131         }
 132
 133         function getPrefixedText()
 134         {
 135                 $s = $this->prefix( $this->mTextform );
 136                 $s = str_replace( "_", " ", $s );
 137                 return $s;
 138         }
 139
 140         function getPrefixedURL()
 141         {
 142                 $s = $this->prefix( $this->mDbkeyform );
 143                 $s = str_replace( " ", "_", $s );
 144
 145                 $s = urlencode ( $s ) ;
 146                 # Cleaning up URL to make it look nice -- is this safe?
 147                 $s = preg_replace( "/%3[Aa]/", ":", $s );
 148                 $s = preg_replace( "/%2[Ff]/", "/", $s );
 149                 $s = str_replace( "%28", "(", $s );
 150                 $s = str_replace( "%29", ")", $s );
 151                 return $s;
 152         }
 153
 154         function getFullURL()
 155         {
 156                 global $wgLang, $wgArticlePath, $wgValidInterwikis;
 157
 158                 if ( "" == $this->mInterwiki ) {
 159                         $p = $wgArticlePath;
 160                 } else {
 161                         $p = $wgValidInterwikis[$this->mInterwiki];
 162                 }
 163                 $n = $wgLang->getNsText( $this->mNamespace );
 164                 if ( "" != $n ) { $n .= ":"; }
 165                 $u = str_replace( "$1", $n . $this->mUrlform, $p );
 166                 if ( "" != $this->mFragment ) {
 167                         $u .= "#" . $this->mFragment;
 168                 }
 169                 return $u;
 170         }
 171
 172         function getEditURL()
 173         {
 174                 global $wgServer, $wgScript;
 175
 176                 if ( "" != $this->mInterwiki ) { return ""; }
 177                 $s = wfLocalUrl( $this->getPrefixedURL(), "action=edit" );
 178
 179                 return $s;
 180         }
 181
 182         function isExternal() { return ( "" != $this->mInterwiki ); }
 183
 184         function isProtected()
 185         {
 186                 if ( -1 == $this->mNamespace ) { return true; }
 187                 $a = $this->getRestrictions();
 188                 if ( in_array( "sysop", $a ) ) { return true; }
 189                 return false;
 190         }
 191
 192         function isLog()
 193         {
 194                 if ( $this->mNamespace != Namespace::getWikipedia() ) {
 195                         return false;
 196                 }
 197                 if ( ( 0 == strcmp( wfMsg( "uploadlogpage" ), $this->mDbkeyform ) ) ||
 198                   ( 0 == strcmp( wfMsg( "dellogpage" ), $this->mDbkeyform ) ) ) {
 199                         return true;
 200                 }
 201                 return false;
 202         }
 203
 204         function userIsWatching()
 205         {
 206                 global $wgUser;
 207
 208                 if ( -1 == $this->mNamespace ) { return false; }
 209                 if ( 0 == $wgUser->getID() ) { return false; }
 210
 211                 return $wgUser->isWatched( $this );
 212         }
 213
 214         function userCanEdit()
 215         {
 216                 global $wgUser;
 217
 218                 if ( -1 == $this->mNamespace ) { return false; }
 219                 # if ( 0 == $this->getArticleID() ) { return false; }
 220                 if ( $this->mDbkeyform == "_" ) { return false; }
 221
 222                 $ur = $wgUser->getRights();
 223                 foreach ( $this->getRestrictions() as $r ) {
 224                         if ( "" != $r && ( ! in_array( $r, $ur ) ) ) {
 225                                 return false;
 226                         }
 227                 }
 228                 return true;
 229         }
 230
 231         function getRestrictions()
 232         {
 233                 $id = $this->getArticleID();
 234                 if ( 0 == $id ) { return array(); }
 235
 236                 if ( ! $this->mRestrictionsLoaded ) {
 237                         $res = wfGetSQL( "cur", "cur_restrictions", "cur_id=$id" );
 238                         $this->mRestrictions = explode( ",", trim( $res ) );
 239                         $this->mRestrictionsLoaded = true;
 240                 }
 241                 return $this->mRestrictions;
 242         }
 243
 244         function getArticleID()
 245         {
 246                 global $wgLinkCache;
 247
 248                 if ( -1 != $this->mArticleID ) { return $this->mArticleID; }
 249                 $this->mArticleID = $wgLinkCache->addLink(
 250                   $this->getPrefixedDBkey() );
 251                 return $this->mArticleID;
 252         }
 253
 254         function resetArticleID( $newid )
 255         {
 256                 global $wgLinkCache;
 257                 $wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
 258
 259                 if ( 0 == $newid ) { $this->mArticleID = -1; }
 260                 else { $this->mArticleID = $newid; }
 261                 $this->mRestrictionsLoaded = false;
 262                 $this->mRestrictions = array();
 263         }
 264
 265         /* private */ function prefix( $name )
 266         {
 267                 global $wgLang;
 268
 269                 $p = "";
 270                 if ( "" != $this->mInterwiki ) {
 271                         $p = $this->mInterwiki . ":";
 272                 }
 273                 if ( 0 != $this->mNamespace ) {
 274                         $p .= $wgLang->getNsText( $this->mNamespace ) . ":";
 275                 }
 276                 return $p . $name;
 277         }
 278
 279         # Assumes that mDbkeyform has been set, and is urldecoded
 280     # and uses undersocres, but not otherwise munged.  This function
 281     # removes illegal characters, splits off the winterwiki and
 282     # namespace prefixes, sets the other forms, and canonicalizes
 283     # everything.  This one function is really at the core of
 284         # Wiki--don't mess with it unless you're really sure you know
 285         # what you're doing.
 286         #
 287         /* private */ function secureAndSplit()
 288         {
 289                 global $wgLang, $wgValidInterwikis, $wgLocalInterwiki;
 290
 291                 $validNamespaces = $wgLang->getNamespaces();
 292                 unset( $validNamespaces[0] );
 293
 294                 $this->mInterwiki = $this->mFragment = "";
 295                 $this->mNamespace = 0;
 296
 297                 $t = preg_replace( "/[\\s_]+/", "_", $this->mDbkeyform );
 298                 if ( "_" == $t{0} ) { $t = substr( $t, 1 ); }
 299                 $l = strlen( $t );
 300                 if ( $l && ( "_" == $t{$l-1} ) ) { $t = substr( $t, 0, $l-1 ); }
 301                 if ( "" == $t ) { $t = "_"; }
 302
 303                 $this->mDbkeyform = $t;
 304                 $done = false;
 305
 306                 $imgpre = ":" . $wgLang->getNsText( Namespace::getImage() ) . ":";
 307                 if ( 0 == strncasecmp( $imgpre, $t, strlen( $imgpre ) ) ) {
 308                         $t = substr( $t, 1 );
 309                 }
 310                 if ( ":" == $t{0} ) {
 311                         $r = substr( $t, 1 );
 312                 } else {
 313                         if ( preg_match( "/^([A-Za-z0-9_\\x80-\\xff]+):(.*)$/", $t, $m ) ) {
 314                                 #$p = strtolower( $m[1] );
 315                                 $p = $m[1];
 316                                 if ( array_key_exists( $p, $wgValidInterwikis ) ) {
 317                                         $t = $m[2];
 318                                         $this->mInterwiki = $p;
 319
 320                                         if ( preg_match( "/^([A-Za-z0-9_\\x80-\\xff]+):(.*)$/",
 321                                           $t, $m ) ) {
 322                                                 $p = strtolower( $m[1] );
 323                                         } else {
 324                                                 $done = true;
 325                                         }
 326                                         if($this->mInterwiki != $wgLocalInterwiki)
 327                                                 $done = true;
 328                                 }
 329                                 if ( ! $done ) {
 330                                         if ( $ns = $wgLang->getNsIndex( str_replace( " ", "_", $p ))) {
 331                                                 $t = $m[2];
 332                                                 $this->mNamespace = $ns;
 333                                         }
 334                                 #       foreach ( $validNamespaces as $ns ) {
 335                                 #               if ( 0 == strcasecmp( $p, $ns ) ) {
 336                                 #                       $t = $m[2];
 337                                 #                       $this->mNamespace = $wgLang->getNsIndex(
 338                                 #                         str_replace( " ", "_", $p ) );
 339                                 #                       break;
 340                                 #               }
 341                                 #       }
 342                                 }
 343                         }
 344                         $r = $t;
 345                 }
 346                 if ( 0 == strcmp( $this->mInterwiki, $wgLocalInterwiki ) ) {
 347                         $this->mInterwiki = "";
 348                 }
 349                 # We already know that some pages won't be in the database!
 350                 #
 351                 if ( "" != $this->mInterwiki || -1 == $this->mNamespace ) {
 352                         $this->mArticleID = 0;
 353                 }
 354                 $f = strstr( $r, "#" );
 355                 if ( false !== $f ) {
 356                         $this->mFragment = substr( $f, 1 );
 357                         $r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
 358                 }
 359                 # Strip illegal characters.
 360                 #
 361                 $tc = Title::legalChars();
 362                 $t = preg_replace( "/[^{$tc}]/", "", $r );
 363
 364                 if( $this->mInterwiki == "") $t = $wgLang->ucfirst( $t );
 365                 $this->mDbkeyform = $t;
 366                 $this->mUrlform = wfUrlencode( $t );
 367                 $this->mTextform = str_replace( "_", " ", $t );
 368         }
 369 }
 370 ?>