src/msw/mimetype.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mimetype.cpp
   3 // Purpose:     classes and functions to manage MIME types
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     23.09.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence (part of wxExtra library)
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // for compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_MIMETYPE
  20
  21 #include "wx/msw/mimetype.h"
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/dynarray.h"
  25     #include "wx/string.h"
  26     #include "wx/intl.h"
  27     #include "wx/log.h"
  28     #include "wx/crt.h"
  29     #if wxUSE_GUI
  30         #include "wx/icon.h"
  31         #include "wx/msgdlg.h"
  32     #endif
  33 #endif //WX_PRECOMP
  34
  35 #include "wx/file.h"
  36 #include "wx/iconloc.h"
  37 #include "wx/confbase.h"
  38
  39 #ifdef __WINDOWS__
  40     #include "wx/msw/registry.h"
  41     #include "wx/msw/private.h"
  42 #endif // OS
  43
  44 // other standard headers
  45 #include <ctype.h>
  46
  47 // in case we're compiling in non-GUI mode
  48 class WXDLLIMPEXP_FWD_CORE wxIcon;
  49
  50 // These classes use Windows registry to retrieve the required information.
  51 //
  52 // Keys used (not all of them are documented, so it might actually stop working
  53 // in future versions of Windows...):
  54 //  1. "HKCR\MIME\Database\Content Type" contains subkeys for all known MIME
  55 //     types, each key has a string value "Extension" which gives (dot preceded)
  56 //     extension for the files of this MIME type.
  57 //
  58 //  2. "HKCR\.ext" contains
  59 //   a) unnamed value containing the "filetype"
  60 //   b) value "Content Type" containing the MIME type
  61 //
  62 // 3. "HKCR\filetype" contains
  63 //   a) unnamed value containing the description
  64 //   b) subkey "DefaultIcon" with single unnamed value giving the icon index in
  65 //      an icon file
  66 //   c) shell\open\command and shell\open\print subkeys containing the commands
  67 //      to open/print the file (the positional parameters are introduced by %1,
  68 //      %2, ... in these strings, we change them to %s ourselves)
  69
  70 // although I don't know of any official documentation which mentions this
  71 // location, uses it, so it isn't likely to change
  72 static const wxChar *MIME_DATABASE_KEY = wxT("MIME\\Database\\Content Type\\");
  73
  74 // this function replaces Microsoft %1 with Unix-like %s
  75 static bool CanonicalizeParams(wxString& command)
  76 {
  77     // transform it from '%1' to '%s' style format string (now also test for %L
  78     // as apparently MS started using it as well for the same purpose)
  79
  80     // NB: we don't make any attempt to verify that the string is valid, i.e.
  81     //     doesn't contain %2, or second %1 or .... But we do make sure that we
  82     //     return a string with _exactly_ one '%s'!
  83     bool foundFilename = false;
  84     size_t len = command.length();
  85     for ( size_t n = 0; (n < len) && !foundFilename; n++ )
  86     {
  87         if ( command[n] == wxT('%') &&
  88                 (n + 1 < len) &&
  89                 (command[n + 1] == wxT('1') || command[n + 1] == wxT('L')) )
  90         {
  91             // replace it with '%s'
  92             command[n + 1] = wxT('s');
  93
  94             foundFilename = true;
  95         }
  96     }
  97
  98     if ( foundFilename )
  99     {
 100         // Some values also contain an addition %* expansion string which is
 101         // presumably supposed to be replaced with the names of the other files
 102         // accepted by the command. As we don't support more than one file
 103         // anyhow, simply ignore it.
 104         command.Replace(" %*", "");
 105     }
 106
 107     return foundFilename;
 108 }
 109
 110 void wxFileTypeImpl::Init(const wxString& strFileType, const wxString& ext)
 111 {
 112     // VZ: does it? (FIXME)
 113     wxCHECK_RET( !ext.empty(), wxT("needs an extension") );
 114
 115     if ( ext[0u] != wxT('.') ) {
 116         m_ext = wxT('.');
 117     }
 118     m_ext << ext;
 119
 120     m_strFileType = strFileType;
 121     if ( !strFileType ) {
 122         m_strFileType = m_ext.AfterFirst('.') + wxT("_auto_file");
 123     }
 124 }
 125
 126 wxString wxFileTypeImpl::GetVerbPath(const wxString& verb) const
 127 {
 128     wxString path;
 129     path << m_strFileType << wxT("\\shell\\") << verb << wxT("\\command");
 130     return path;
 131 }
 132
 133 size_t wxFileTypeImpl::GetAllCommands(wxArrayString *verbs,
 134                                       wxArrayString *commands,
 135                                       const wxFileType::MessageParameters& params) const
 136 {
 137     wxCHECK_MSG( !m_ext.empty(), 0, wxT("GetAllCommands() needs an extension") );
 138
 139     if ( m_strFileType.empty() )
 140     {
 141         // get it from the registry
 142         wxFileTypeImpl *self = wxConstCast(this, wxFileTypeImpl);
 143         wxRegKey rkey(wxRegKey::HKCR, m_ext);
 144         if ( !rkey.Exists() || !rkey.QueryValue(wxEmptyString, self->m_strFileType) )
 145         {
 146             wxLogDebug(wxT("Can't get the filetype for extension '%s'."),
 147                        m_ext.c_str());
 148
 149             return 0;
 150         }
 151     }
 152
 153     // enum all subkeys of HKCR\filetype\shell
 154     size_t count = 0;
 155     wxRegKey rkey(wxRegKey::HKCR, m_strFileType  + wxT("\\shell"));
 156     long dummy;
 157     wxString verb;
 158     bool ok = rkey.GetFirstKey(verb, dummy);
 159     while ( ok )
 160     {
 161         wxString command = wxFileType::ExpandCommand(GetCommand(verb), params);
 162
 163         // we want the open bverb to eb always the first
 164
 165         if ( verb.CmpNoCase(wxT("open")) == 0 )
 166         {
 167             if ( verbs )
 168                 verbs->Insert(verb, 0);
 169             if ( commands )
 170                 commands->Insert(command, 0);
 171         }
 172         else // anything else than "open"
 173         {
 174             if ( verbs )
 175                 verbs->Add(verb);
 176             if ( commands )
 177                 commands->Add(command);
 178         }
 179
 180         count++;
 181
 182         ok = rkey.GetNextKey(verb, dummy);
 183     }
 184
 185     return count;
 186 }
 187
 188 // ----------------------------------------------------------------------------
 189 // modify the registry database
 190 // ----------------------------------------------------------------------------
 191
 192 bool wxFileTypeImpl::EnsureExtKeyExists()
 193 {
 194     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 195     if ( !rkey.Exists() )
 196     {
 197         if ( !rkey.Create() || !rkey.SetValue(wxEmptyString, m_strFileType) )
 198         {
 199             wxLogError(_("Failed to create registry entry for '%s' files."),
 200                        m_ext.c_str());
 201             return false;
 202         }
 203     }
 204
 205     return true;
 206 }
 207
 208 // ----------------------------------------------------------------------------
 209 // get the command to use
 210 // ----------------------------------------------------------------------------
 211
 212 static wxString wxFileTypeImplGetCurVer(const wxString& progId)
 213 {
 214     wxRegKey key(wxRegKey::HKCR, progId + wxT("\\CurVer"));
 215     if (key.Exists())
 216     {
 217         wxString value;
 218         if (key.QueryValue(wxEmptyString, value))
 219             return value;
 220     }
 221     return progId;
 222 }
 223
 224 wxString wxFileTypeImpl::GetCommand(const wxString& verb) const
 225 {
 226     // suppress possible error messages
 227     wxLogNull nolog;
 228     wxString strKey;
 229
 230     {
 231         wxRegKey explorerKey(wxRegKey::HKCU, wxT("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\") + m_ext);
 232         if (explorerKey.Exists())
 233         {
 234             if (explorerKey.Open(wxRegKey::Read))
 235             {
 236                 if (explorerKey.QueryValue(wxT("Progid"), strKey))
 237                 {
 238                     strKey = wxFileTypeImplGetCurVer(strKey);
 239                 }
 240             }
 241         }
 242     }
 243
 244     if (!strKey && wxRegKey(wxRegKey::HKCR, m_ext + wxT("\\shell")).Exists())
 245         strKey = m_ext;
 246
 247     if ( !strKey && !m_strFileType.empty())
 248     {
 249         wxString fileType = wxFileTypeImplGetCurVer(m_strFileType);
 250         if (wxRegKey(wxRegKey::HKCR, fileType + wxT("\\shell")).Exists())
 251             strKey = fileType;
 252     }
 253
 254     if ( !strKey )
 255     {
 256         // no info
 257         return wxEmptyString;
 258     }
 259
 260     strKey << wxT("\\shell\\") << verb;
 261     wxRegKey key(wxRegKey::HKCR, strKey + wxT("\\command"));
 262     wxString command;
 263     if ( key.Open(wxRegKey::Read) ) {
 264         // it's the default value of the key
 265         if ( key.QueryValue(wxEmptyString, command) ) {
 266             bool foundFilename = CanonicalizeParams(command);
 267
 268 #if wxUSE_IPC
 269             // look whether we must issue some DDE requests to the application
 270             // (and not just launch it)
 271             strKey += wxT("\\DDEExec");
 272             wxRegKey keyDDE(wxRegKey::HKCR, strKey);
 273             if ( keyDDE.Open(wxRegKey::Read) ) {
 274                 wxString ddeCommand, ddeServer, ddeTopic;
 275                 keyDDE.QueryValue(wxEmptyString, ddeCommand);
 276                 ddeCommand.Replace(wxT("%1"), wxT("%s"));
 277
 278                 wxRegKey keyServer(wxRegKey::HKCR, strKey + wxT("\\Application"));
 279                 keyServer.QueryValue(wxEmptyString, ddeServer);
 280                 wxRegKey keyTopic(wxRegKey::HKCR, strKey + wxT("\\Topic"));
 281                 keyTopic.QueryValue(wxEmptyString, ddeTopic);
 282
 283                 if (ddeTopic.empty())
 284                     ddeTopic = wxT("System");
 285
 286                 // HACK: we use a special feature of wxExecute which exists
 287                 //       just because we need it here: it will establish DDE
 288                 //       conversation with the program it just launched
 289                 command.Prepend(wxT("WX_DDE#"));
 290                 command << wxT('#') << ddeServer
 291                         << wxT('#') << ddeTopic
 292                         << wxT('#') << ddeCommand;
 293             }
 294             else
 295 #endif // wxUSE_IPC
 296             if ( !foundFilename )
 297             {
 298                 // we didn't find any '%1' - the application doesn't know which
 299                 // file to open (note that we only do it if there is no DDEExec
 300                 // subkey)
 301                 //
 302                 // HACK: append the filename at the end, hope that it will do
 303                 command << wxT(" %s");
 304             }
 305         }
 306     }
 307     //else: no such file type or no value, will return empty string
 308
 309     return command;
 310 }
 311
 312 bool
 313 wxFileTypeImpl::GetOpenCommand(wxString *openCmd,
 314                                const wxFileType::MessageParameters& params)
 315                                const
 316 {
 317     wxString cmd = GetCommand(wxT("open"));
 318
 319     *openCmd = wxFileType::ExpandCommand(cmd, params);
 320
 321     return !openCmd->empty();
 322 }
 323
 324 bool
 325 wxFileTypeImpl::GetPrintCommand(wxString *printCmd,
 326                                 const wxFileType::MessageParameters& params)
 327                                 const
 328 {
 329     wxString cmd = GetCommand(wxT("print"));
 330
 331     *printCmd = wxFileType::ExpandCommand(cmd, params);
 332
 333     return !printCmd->empty();
 334 }
 335
 336 // ----------------------------------------------------------------------------
 337 // getting other stuff
 338 // ----------------------------------------------------------------------------
 339
 340 // TODO this function is half implemented
 341 bool wxFileTypeImpl::GetExtensions(wxArrayString& extensions)
 342 {
 343     if ( m_ext.empty() ) {
 344         // the only way to get the list of extensions from the file type is to
 345         // scan through all extensions in the registry - too slow...
 346         return false;
 347     }
 348     else {
 349         extensions.Empty();
 350         extensions.Add(m_ext);
 351
 352         // it's a lie too, we don't return _all_ extensions...
 353         return true;
 354     }
 355 }
 356
 357 bool wxFileTypeImpl::GetMimeType(wxString *mimeType) const
 358 {
 359     // suppress possible error messages
 360     wxLogNull nolog;
 361     wxRegKey key(wxRegKey::HKCR, m_ext);
 362
 363     return key.Open(wxRegKey::Read) &&
 364                 key.QueryValue(wxT("Content Type"), *mimeType);
 365 }
 366
 367 bool wxFileTypeImpl::GetMimeTypes(wxArrayString& mimeTypes) const
 368 {
 369     wxString s;
 370
 371     if ( !GetMimeType(&s) )
 372     {
 373         return false;
 374     }
 375
 376     mimeTypes.Clear();
 377     mimeTypes.Add(s);
 378     return true;
 379 }
 380
 381
 382 bool wxFileTypeImpl::GetIcon(wxIconLocation *iconLoc) const
 383 {
 384     wxString strIconKey;
 385     strIconKey << m_strFileType << wxT("\\DefaultIcon");
 386
 387     // suppress possible error messages
 388     wxLogNull nolog;
 389     wxRegKey key(wxRegKey::HKCR, strIconKey);
 390
 391     if ( key.Open(wxRegKey::Read) ) {
 392         wxString strIcon;
 393         // it's the default value of the key
 394         if ( key.QueryValue(wxEmptyString, strIcon) ) {
 395             // the format is the following: <full path to file>, <icon index>
 396             // NB: icon index may be negative as well as positive and the full
 397             //     path may contain the environment variables inside '%'
 398             wxString strFullPath = strIcon.BeforeLast(wxT(',')),
 399             strIndex = strIcon.AfterLast(wxT(','));
 400
 401             // index may be omitted, in which case BeforeLast(',') is empty and
 402             // AfterLast(',') is the whole string
 403             if ( strFullPath.empty() ) {
 404                 strFullPath = strIndex;
 405                 strIndex = wxT("0");
 406             }
 407
 408             if ( iconLoc )
 409             {
 410                 iconLoc->SetFileName(wxExpandEnvVars(strFullPath));
 411
 412                 iconLoc->SetIndex(wxAtoi(strIndex));
 413             }
 414
 415             return true;
 416         }
 417     }
 418
 419     // no such file type or no value or incorrect icon entry
 420     return false;
 421 }
 422
 423 bool wxFileTypeImpl::GetDescription(wxString *desc) const
 424 {
 425     // suppress possible error messages
 426     wxLogNull nolog;
 427     wxRegKey key(wxRegKey::HKCR, m_strFileType);
 428
 429     if ( key.Open(wxRegKey::Read) ) {
 430         // it's the default value of the key
 431         if ( key.QueryValue(wxEmptyString, *desc) ) {
 432             return true;
 433         }
 434     }
 435
 436     return false;
 437 }
 438
 439 // helper function
 440 wxFileType *
 441 wxMimeTypesManagerImpl::CreateFileType(const wxString& filetype, const wxString& ext)
 442 {
 443     wxFileType *fileType = new wxFileType;
 444     fileType->m_impl->Init(filetype, ext);
 445     return fileType;
 446 }
 447
 448 // extension -> file type
 449 wxFileType *
 450 wxMimeTypesManagerImpl::GetFileTypeFromExtension(const wxString& ext)
 451 {
 452     // add the leading point if necessary
 453     wxString str;
 454     if ( ext[0u] != wxT('.') ) {
 455         str = wxT('.');
 456     }
 457     str << ext;
 458
 459     // suppress possible error messages
 460     wxLogNull nolog;
 461
 462     bool knownExtension = false;
 463
 464     wxString strFileType;
 465     wxRegKey key(wxRegKey::HKCR, str);
 466     if ( key.Open(wxRegKey::Read) ) {
 467         // it's the default value of the key
 468         if ( key.QueryValue(wxEmptyString, strFileType) ) {
 469             // create the new wxFileType object
 470             return CreateFileType(strFileType, ext);
 471         }
 472         else {
 473             // this extension doesn't have a filetype, but it's known to the
 474             // system and may be has some other useful keys (open command or
 475             // content-type), so still return a file type object for it
 476             knownExtension = true;
 477         }
 478     }
 479
 480     if ( !knownExtension )
 481     {
 482         // unknown extension
 483         return NULL;
 484     }
 485
 486     return CreateFileType(wxEmptyString, ext);
 487 }
 488
 489 /*
 490 wxFileType *
 491 wxMimeTypesManagerImpl::GetOrAllocateFileTypeFromExtension(const wxString& ext)
 492 {
 493     wxFileType *fileType = GetFileTypeFromExtension(ext);
 494     if ( !fileType )
 495     {
 496         fileType = CreateFileType(wxEmptyString, ext);
 497     }
 498
 499     return fileType;
 500 }
 501 */
 502
 503 // MIME type -> extension -> file type
 504 wxFileType *
 505 wxMimeTypesManagerImpl::GetFileTypeFromMimeType(const wxString& mimeType)
 506 {
 507     wxString strKey = MIME_DATABASE_KEY;
 508     strKey << mimeType;
 509
 510     // suppress possible error messages
 511     wxLogNull nolog;
 512
 513     wxString ext;
 514     wxRegKey key(wxRegKey::HKCR, strKey);
 515     if ( key.Open(wxRegKey::Read) ) {
 516         if ( key.QueryValue(wxT("Extension"), ext) ) {
 517             return GetFileTypeFromExtension(ext);
 518         }
 519     }
 520
 521     // unknown MIME type
 522     return NULL;
 523 }
 524
 525 size_t wxMimeTypesManagerImpl::EnumAllFileTypes(wxArrayString& mimetypes)
 526 {
 527     // enumerate all keys under MIME_DATABASE_KEY
 528     wxRegKey key(wxRegKey::HKCR, MIME_DATABASE_KEY);
 529
 530     wxString type;
 531     long cookie;
 532     bool cont = key.GetFirstKey(type, cookie);
 533     while ( cont )
 534     {
 535         mimetypes.Add(type);
 536
 537         cont = key.GetNextKey(type, cookie);
 538     }
 539
 540     return mimetypes.GetCount();
 541 }
 542
 543 // ----------------------------------------------------------------------------
 544 // create a new association
 545 // ----------------------------------------------------------------------------
 546
 547 wxFileType *wxMimeTypesManagerImpl::Associate(const wxFileTypeInfo& ftInfo)
 548 {
 549     wxCHECK_MSG( !ftInfo.GetExtensions().empty(), NULL,
 550                  wxT("Associate() needs extension") );
 551
 552     bool ok;
 553     size_t iExtCount = 0;
 554     wxString filetype;
 555     wxString extWithDot;
 556
 557     wxString ext = ftInfo.GetExtensions()[iExtCount];
 558
 559     wxCHECK_MSG( !ext.empty(), NULL,
 560                  wxT("Associate() needs non empty extension") );
 561
 562     if ( ext[0u] != wxT('.') )
 563         extWithDot = wxT('.');
 564     extWithDot += ext;
 565
 566     // start by setting the HKCR\\.ext entries
 567     // default is filetype; content type is mimetype
 568     const wxString& filetypeOrig = ftInfo.GetShortDesc();
 569
 570     wxRegKey key(wxRegKey::HKCR, extWithDot);
 571     if ( !key.Exists() )
 572     {
 573         // create the mapping from the extension to the filetype
 574         ok = key.Create();
 575         if ( ok )
 576         {
 577
 578             if ( filetypeOrig.empty() )
 579             {
 580                 // make it up from the extension
 581                 filetype << extWithDot.c_str() + 1 << wxT("_file");
 582             }
 583             else
 584             {
 585                 // just use the provided one
 586                 filetype = filetypeOrig;
 587             }
 588
 589             key.SetValue(wxEmptyString, filetype);
 590         }
 591     }
 592     else
 593     {
 594         // key already exists, maybe we want to change it ??
 595         if (!filetypeOrig.empty())
 596         {
 597             filetype = filetypeOrig;
 598             key.SetValue(wxEmptyString, filetype);
 599         }
 600         else
 601         {
 602             key.QueryValue(wxEmptyString, filetype);
 603         }
 604     }
 605
 606     // now set a mimetypeif we have it, but ignore it if none
 607     const wxString& mimetype = ftInfo.GetMimeType();
 608     if ( !mimetype.empty() )
 609     {
 610         // set the MIME type
 611         ok = key.SetValue(wxT("Content Type"), mimetype);
 612
 613         if ( ok )
 614         {
 615             // create the MIME key
 616             wxString strKey = MIME_DATABASE_KEY;
 617             strKey << mimetype;
 618             wxRegKey keyMIME(wxRegKey::HKCR, strKey);
 619             ok = keyMIME.Create();
 620
 621             if ( ok )
 622             {
 623                 // and provide a back link to the extension
 624                 keyMIME.SetValue(wxT("Extension"), extWithDot);
 625             }
 626         }
 627     }
 628
 629
 630     // now make other extensions have the same filetype
 631
 632     for (iExtCount=1; iExtCount < ftInfo.GetExtensionsCount(); iExtCount++ )
 633     {
 634         ext = ftInfo.GetExtensions()[iExtCount];
 635         if ( ext[0u] != wxT('.') )
 636            extWithDot = wxT('.');
 637         extWithDot += ext;
 638
 639         wxRegKey key2(wxRegKey::HKCR, extWithDot);
 640         if ( !key2.Exists() )
 641             key2.Create();
 642         key2.SetValue(wxEmptyString, filetype);
 643
 644         // now set any mimetypes we may have, but ignore it if none
 645         const wxString& mimetype2 = ftInfo.GetMimeType();
 646         if ( !mimetype2.empty() )
 647         {
 648             // set the MIME type
 649             ok = key2.SetValue(wxT("Content Type"), mimetype2);
 650
 651             if ( ok )
 652             {
 653                 // create the MIME key
 654                 wxString strKey = MIME_DATABASE_KEY;
 655                 strKey << mimetype2;
 656                 wxRegKey keyMIME(wxRegKey::HKCR, strKey);
 657                 ok = keyMIME.Create();
 658
 659                 if ( ok )
 660                 {
 661                     // and provide a back link to the extension
 662                     keyMIME.SetValue(wxT("Extension"), extWithDot);
 663                 }
 664             }
 665         }
 666
 667     } // end of for loop; all extensions now point to HKCR\.ext\Default
 668
 669     // create the filetype key itself (it will be empty for now, but
 670     // SetCommand(), SetDefaultIcon() &c will use it later)
 671     wxRegKey keyFT(wxRegKey::HKCR, filetype);
 672     keyFT.Create();
 673
 674     wxFileType *ft = CreateFileType(filetype, extWithDot);
 675
 676     if (ft)
 677     {
 678         if (! ftInfo.GetOpenCommand ().empty() ) ft->SetCommand (ftInfo.GetOpenCommand (), wxT("open"  ) );
 679         if (! ftInfo.GetPrintCommand().empty() ) ft->SetCommand (ftInfo.GetPrintCommand(), wxT("print" ) );
 680         // chris: I don't like the ->m_impl-> here FIX this ??
 681         if (! ftInfo.GetDescription ().empty() ) ft->m_impl->SetDescription (ftInfo.GetDescription ()) ;
 682         if (! ftInfo.GetIconFile().empty() ) ft->SetDefaultIcon (ftInfo.GetIconFile(), ftInfo.GetIconIndex() );
 683
 684     }
 685
 686     return ft;
 687 }
 688
 689 bool wxFileTypeImpl::SetCommand(const wxString& cmd,
 690                                 const wxString& verb,
 691                                 bool WXUNUSED(overwriteprompt))
 692 {
 693     wxCHECK_MSG( !m_ext.empty() && !verb.empty(), false,
 694                  wxT("SetCommand() needs an extension and a verb") );
 695
 696     if ( !EnsureExtKeyExists() )
 697         return false;
 698
 699     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 700 #if 0
 701     if ( rkey.Exists() && overwriteprompt )
 702     {
 703 #if wxUSE_GUI
 704         wxString old;
 705         rkey.QueryValue(wxEmptyString, old);
 706         if ( wxMessageBox
 707              (
 708                 wxString::Format(
 709                     _("Do you want to overwrite the command used to %s "
 710                       "files with extension \"%s\" ?\nCurrent value is \n%s, "
 711                       "\nNew value is \n%s %1"), // bug here FIX need %1 ??
 712                     verb.c_str(),
 713                     m_ext.c_str(),
 714                     old.c_str(),
 715                     cmd.c_str()),
 716                 _("Confirm registry update"),
 717                 wxYES_NO | wxICON_QUESTION
 718              ) != wxYES )
 719 #endif // wxUSE_GUI
 720         {
 721             // cancelled by user
 722             return false;
 723         }
 724     }
 725 #endif
 726     // TODO:
 727     // 1. translate '%s' to '%1' instead of always adding it
 728     // 2. create DDEExec value if needed (undo GetCommand)
 729     return rkey.Create() && rkey.SetValue(wxEmptyString, cmd + wxT(" \"%1\"") );
 730 }
 731
 732 /* // no longer used
 733 bool wxFileTypeImpl::SetMimeType(const wxString& mimeTypeOrig)
 734 {
 735     wxCHECK_MSG( !m_ext.empty(), false, wxT("SetMimeType() needs extension") );
 736
 737     if ( !EnsureExtKeyExists() )
 738         return false;
 739
 740     // VZ: is this really useful? (FIXME)
 741     wxString mimeType;
 742     if ( !mimeTypeOrig )
 743     {
 744         // make up a default value for it
 745         wxString cmd;
 746         wxFileName::SplitPath(GetCommand(wxT("open")), NULL, &cmd, NULL);
 747         mimeType << wxT("application/x-") << cmd;
 748     }
 749     else
 750     {
 751         mimeType = mimeTypeOrig;
 752     }
 753
 754     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 755     return rkey.Create() && rkey.SetValue(wxT("Content Type"), mimeType);
 756 }
 757 */
 758
 759 bool wxFileTypeImpl::SetDefaultIcon(const wxString& cmd, int index)
 760 {
 761     wxCHECK_MSG( !m_ext.empty(), false, wxT("SetDefaultIcon() needs extension") );
 762     wxCHECK_MSG( !m_strFileType.empty(), false, wxT("File key not found") );
 763 //    the next line fails on a SMBshare, I think because it is case mangled
 764 //    wxCHECK_MSG( !wxFileExists(cmd), false, wxT("Icon file not found.") );
 765
 766     if ( !EnsureExtKeyExists() )
 767         return false;
 768
 769     wxRegKey rkey(wxRegKey::HKCR, m_strFileType + wxT("\\DefaultIcon"));
 770
 771     return rkey.Create() &&
 772            rkey.SetValue(wxEmptyString,
 773                          wxString::Format(wxT("%s,%d"), cmd.c_str(), index));
 774 }
 775
 776 bool wxFileTypeImpl::SetDescription (const wxString& desc)
 777 {
 778     wxCHECK_MSG( !m_strFileType.empty(), false, wxT("File key not found") );
 779     wxCHECK_MSG( !desc.empty(), false, wxT("No file description supplied") );
 780
 781     if ( !EnsureExtKeyExists() )
 782         return false;
 783
 784     wxRegKey rkey(wxRegKey::HKCR, m_strFileType );
 785
 786     return rkey.Create() &&
 787            rkey.SetValue(wxEmptyString, desc);
 788 }
 789
 790 // ----------------------------------------------------------------------------
 791 // remove file association
 792 // ----------------------------------------------------------------------------
 793
 794 bool wxFileTypeImpl::Unassociate()
 795 {
 796     bool result = true;
 797     if ( !RemoveOpenCommand() )
 798         result = false;
 799     if ( !RemoveDefaultIcon() )
 800         result = false;
 801     if ( !RemoveMimeType() )
 802         result = false;
 803     if ( !RemoveDescription() )
 804         result = false;
 805
 806 /*
 807     //this might hold other keys, eg some have CSLID keys
 808     if ( result )
 809     {
 810         // delete the root key
 811         wxRegKey key(wxRegKey::HKCR, m_ext);
 812         if ( key.Exists() )
 813             result = key.DeleteSelf();
 814     }
 815 */
 816     return result;
 817 }
 818
 819 bool wxFileTypeImpl::RemoveOpenCommand()
 820 {
 821    return RemoveCommand(wxT("open"));
 822 }
 823
 824 bool wxFileTypeImpl::RemoveCommand(const wxString& verb)
 825 {
 826     wxCHECK_MSG( !m_ext.empty() && !verb.empty(), false,
 827                  wxT("RemoveCommand() needs an extension and a verb") );
 828
 829     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 830
 831     // if the key already doesn't exist, it's a success
 832     return !rkey.Exists() || rkey.DeleteSelf();
 833 }
 834
 835 bool wxFileTypeImpl::RemoveMimeType()
 836 {
 837     wxCHECK_MSG( !m_ext.empty(), false, wxT("RemoveMimeType() needs extension") );
 838
 839     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 840     return !rkey.Exists() || rkey.DeleteSelf();
 841 }
 842
 843 bool wxFileTypeImpl::RemoveDefaultIcon()
 844 {
 845     wxCHECK_MSG( !m_ext.empty(), false,
 846                  wxT("RemoveDefaultIcon() needs extension") );
 847
 848     wxRegKey rkey (wxRegKey::HKCR, m_strFileType  + wxT("\\DefaultIcon"));
 849     return !rkey.Exists() || rkey.DeleteSelf();
 850 }
 851
 852 bool wxFileTypeImpl::RemoveDescription()
 853 {
 854     wxCHECK_MSG( !m_ext.empty(), false,
 855                  wxT("RemoveDescription() needs extension") );
 856
 857     wxRegKey rkey (wxRegKey::HKCR, m_strFileType );
 858     return !rkey.Exists() || rkey.DeleteSelf();
 859 }
 860
 861 #endif // wxUSE_MIMETYPE