src/msw/mimetype.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 license (part of wxExtra library)
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef    __GNUG__
  13 #pragma implementation "mimetype.h"
  14 #endif
  15
  16 // for compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20   #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_MIMETYPE
  24
  25 // Doesn't compile in WIN16 mode
  26 #ifndef __WIN16__
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/string.h"
  30     #if wxUSE_GUI
  31         #include "wx/icon.h"
  32         #include "wx/msgdlg.h"
  33     #endif
  34 #endif //WX_PRECOMP
  35
  36 #include "wx/log.h"
  37 #include "wx/file.h"
  38 #include "wx/intl.h"
  39 #include "wx/dynarray.h"
  40 #include "wx/confbase.h"
  41
  42 #ifdef __WXMSW__
  43     #include "wx/msw/registry.h"
  44     #include "windows.h"
  45 #endif // OS
  46
  47 #include "wx/msw/mimetype.h"
  48
  49 // other standard headers
  50 #include <ctype.h>
  51
  52 // in case we're compiling in non-GUI mode
  53 class WXDLLEXPORT wxIcon;
  54
  55 // These classes use Windows registry to retrieve the required information.
  56 //
  57 // Keys used (not all of them are documented, so it might actually stop working
  58 // in future versions of Windows...):
  59 //  1. "HKCR\MIME\Database\Content Type" contains subkeys for all known MIME
  60 //     types, each key has a string value "Extension" which gives (dot preceded)
  61 //     extension for the files of this MIME type.
  62 //
  63 //  2. "HKCR\.ext" contains
  64 //   a) unnamed value containing the "filetype"
  65 //   b) value "Content Type" containing the MIME type
  66 //
  67 // 3. "HKCR\filetype" contains
  68 //   a) unnamed value containing the description
  69 //   b) subkey "DefaultIcon" with single unnamed value giving the icon index in
  70 //      an icon file
  71 //   c) shell\open\command and shell\open\print subkeys containing the commands
  72 //      to open/print the file (the positional parameters are introduced by %1,
  73 //      %2, ... in these strings, we change them to %s ourselves)
  74
  75 // although I don't know of any official documentation which mentions this
  76 // location, uses it, so it isn't likely to change
  77 static const wxChar *MIME_DATABASE_KEY = wxT("MIME\\Database\\Content Type\\");
  78
  79 void wxFileTypeImpl::Init(const wxString& strFileType, const wxString& ext)
  80 {
  81     // VZ: does it? (FIXME)
  82     wxCHECK_RET( !ext.IsEmpty(), _T("needs an extension") );
  83
  84     if ( ext[0u] != wxT('.') ) {
  85         m_ext = wxT('.');
  86     }
  87     m_ext << ext;
  88
  89     m_strFileType = strFileType;
  90     if ( !strFileType ) {
  91         m_strFileType = m_ext.AfterFirst('.') + "_auto_file";
  92     }
  93 }
  94
  95 wxString wxFileTypeImpl::GetVerbPath(const wxString& verb) const
  96 {
  97     wxString path;
  98     path << m_strFileType << _T("\\shell\\") << verb << _T("\\command");
  99     return path;
 100 }
 101
 102 size_t wxFileTypeImpl::GetAllCommands(wxArrayString *verbs,
 103                                       wxArrayString *commands,
 104                                       const wxFileType::MessageParameters& params) const
 105 {
 106     wxCHECK_MSG( !m_ext.IsEmpty(), 0, _T("GetAllCommands() needs an extension") );
 107
 108     if ( m_strFileType.IsEmpty() )
 109     {
 110         // get it from the registry
 111         wxFileTypeImpl *self = wxConstCast(this, wxFileTypeImpl);
 112         wxRegKey rkey(wxRegKey::HKCR, m_ext);
 113         if ( !rkey.Exists() || !rkey.QueryValue(_T(""), self->m_strFileType) )
 114         {
 115             wxLogDebug(_T("Can't get the filetype for extension '%s'."),
 116                        m_ext.c_str());
 117
 118             return 0;
 119         }
 120     }
 121
 122     // enum all subkeys of HKCR\filetype\shell
 123     size_t count = 0;
 124     wxRegKey rkey(wxRegKey::HKCR, m_strFileType  + _T("\\shell"));
 125     long dummy;
 126     wxString verb;
 127     bool ok = rkey.GetFirstKey(verb, dummy);
 128     while ( ok )
 129     {
 130         wxString command = wxFileType::ExpandCommand(GetCommand(verb), params);
 131
 132         // we want the open bverb to eb always the first
 133
 134         if ( verb.CmpNoCase(_T("open")) == 0 )
 135         {
 136             if ( verbs )
 137                 verbs->Insert(verb, 0);
 138             if ( commands )
 139                 commands->Insert(command, 0);
 140         }
 141         else // anything else than "open"
 142         {
 143             if ( verbs )
 144                 verbs->Add(verb);
 145             if ( commands )
 146                 commands->Add(command);
 147         }
 148
 149         count++;
 150
 151         ok = rkey.GetNextKey(verb, dummy);
 152     }
 153
 154     return count;
 155 }
 156
 157 // ----------------------------------------------------------------------------
 158 // modify the registry database
 159 // ----------------------------------------------------------------------------
 160
 161 bool wxFileTypeImpl::EnsureExtKeyExists()
 162 {
 163     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 164     if ( !rkey.Exists() )
 165     {
 166         if ( !rkey.Create() || !rkey.SetValue(_T(""), m_strFileType) )
 167         {
 168             wxLogError(_("Failed to create registry entry for '%s' files."),
 169                        m_ext.c_str());
 170             return FALSE;
 171         }
 172     }
 173
 174     return TRUE;
 175 }
 176
 177 // ----------------------------------------------------------------------------
 178 // get the command to use
 179 // ----------------------------------------------------------------------------
 180
 181 wxString wxFileTypeImpl::GetCommand(const wxChar *verb) const
 182 {
 183     // suppress possible error messages
 184     wxLogNull nolog;
 185     wxString strKey;
 186
 187     if ( wxRegKey(wxRegKey::HKCR, m_ext + _T("\\shell")).Exists() )
 188         strKey = m_ext;
 189     if ( wxRegKey(wxRegKey::HKCR, m_strFileType + _T("\\shell")).Exists() )
 190         strKey = m_strFileType;
 191
 192     if ( !strKey )
 193     {
 194         // no info
 195         return wxEmptyString;
 196     }
 197
 198     strKey << wxT("\\shell\\") << verb;
 199     wxRegKey key(wxRegKey::HKCR, strKey + _T("\\command"));
 200     wxString command;
 201     if ( key.Open() ) {
 202         // it's the default value of the key
 203         if ( key.QueryValue(wxT(""), command) ) {
 204             // transform it from '%1' to '%s' style format string (now also
 205             // test for %L - apparently MS started using it as well for the
 206             // same purpose)
 207
 208             // NB: we don't make any attempt to verify that the string is valid,
 209             //     i.e. doesn't contain %2, or second %1 or .... But we do make
 210             //     sure that we return a string with _exactly_ one '%s'!
 211             bool foundFilename = FALSE;
 212             size_t len = command.Len();
 213             for ( size_t n = 0; (n < len) && !foundFilename; n++ ) {
 214                 if ( command[n] == wxT('%') &&
 215                      (n + 1 < len) &&
 216                      (command[n + 1] == wxT('1') ||
 217                       command[n + 1] == wxT('L')) ) {
 218                     // replace it with '%s'
 219                     command[n + 1] = wxT('s');
 220
 221                     foundFilename = TRUE;
 222                 }
 223             }
 224
 225 #if wxUSE_IPC
 226             // look whether we must issue some DDE requests to the application
 227             // (and not just launch it)
 228             strKey += _T("\\DDEExec");
 229             wxRegKey keyDDE(wxRegKey::HKCR, strKey);
 230             if ( keyDDE.Open() ) {
 231                 wxString ddeCommand, ddeServer, ddeTopic;
 232                 keyDDE.QueryValue(_T(""), ddeCommand);
 233                 ddeCommand.Replace(_T("%1"), _T("%s"));
 234
 235                 wxRegKey(wxRegKey::HKCR, strKey + _T("\\Application")).
 236                     QueryValue(_T(""), ddeServer);
 237                 wxRegKey(wxRegKey::HKCR, strKey + _T("\\Topic")).
 238                     QueryValue(_T(""), ddeTopic);
 239
 240                 // HACK: we use a special feature of wxExecute which exists
 241                 //       just because we need it here: it will establish DDE
 242                 //       conversation with the program it just launched
 243                 command.Prepend(_T("WX_DDE#"));
 244                 command << _T('#') << ddeServer
 245                         << _T('#') << ddeTopic
 246                         << _T('#') << ddeCommand;
 247             }
 248             else
 249 #endif // wxUSE_IPC
 250                 if ( !foundFilename ) {
 251                 // we didn't find any '%1' - the application doesn't know which
 252                 // file to open (note that we only do it if there is no DDEExec
 253                 // subkey)
 254                 //
 255                 // HACK: append the filename at the end, hope that it will do
 256                 command << wxT(" %s");
 257             }
 258         }
 259     }
 260     //else: no such file type or no value, will return empty string
 261
 262     return command;
 263 }
 264
 265 bool
 266 wxFileTypeImpl::GetOpenCommand(wxString *openCmd,
 267                                const wxFileType::MessageParameters& params)
 268                                const
 269 {
 270     wxString cmd = GetCommand(wxT("open"));
 271
 272     *openCmd = wxFileType::ExpandCommand(cmd, params);
 273
 274     return !openCmd->IsEmpty();
 275 }
 276
 277 bool
 278 wxFileTypeImpl::GetPrintCommand(wxString *printCmd,
 279                                 const wxFileType::MessageParameters& params)
 280                                 const
 281 {
 282     wxString cmd = GetCommand(wxT("print"));
 283
 284     *printCmd = wxFileType::ExpandCommand(cmd, params);
 285
 286     return !printCmd->IsEmpty();
 287 }
 288
 289 // ----------------------------------------------------------------------------
 290 // getting other stuff
 291 // ----------------------------------------------------------------------------
 292
 293 // TODO this function is half implemented
 294 bool wxFileTypeImpl::GetExtensions(wxArrayString& extensions)
 295 {
 296     if ( m_ext.IsEmpty() ) {
 297         // the only way to get the list of extensions from the file type is to
 298         // scan through all extensions in the registry - too slow...
 299         return FALSE;
 300     }
 301     else {
 302         extensions.Empty();
 303         extensions.Add(m_ext);
 304
 305         // it's a lie too, we don't return _all_ extensions...
 306         return TRUE;
 307     }
 308 }
 309
 310 bool wxFileTypeImpl::GetMimeType(wxString *mimeType) const
 311 {
 312     // suppress possible error messages
 313     wxLogNull nolog;
 314     wxRegKey key(wxRegKey::HKCR, m_ext);
 315
 316     return key.Open() && key.QueryValue(wxT("Content Type"), *mimeType);
 317 }
 318
 319 bool wxFileTypeImpl::GetMimeTypes(wxArrayString& mimeTypes) const
 320 {
 321     wxString s;
 322
 323     if ( !GetMimeType(&s) )
 324     {
 325         return FALSE;
 326     }
 327
 328     mimeTypes.Clear();
 329     mimeTypes.Add(s);
 330     return TRUE;
 331 }
 332
 333
 334 bool wxFileTypeImpl::GetIcon(wxIcon *icon,
 335                              wxString *iconFile,
 336                              int *iconIndex) const
 337 {
 338 #if wxUSE_GUI
 339     wxString strIconKey;
 340     strIconKey << m_strFileType << wxT("\\DefaultIcon");
 341
 342     // suppress possible error messages
 343     wxLogNull nolog;
 344     wxRegKey key(wxRegKey::HKCR, strIconKey);
 345
 346     if ( key.Open() ) {
 347         wxString strIcon;
 348         // it's the default value of the key
 349         if ( key.QueryValue(wxT(""), strIcon) ) {
 350             // the format is the following: <full path to file>, <icon index>
 351             // NB: icon index may be negative as well as positive and the full
 352             //     path may contain the environment variables inside '%'
 353             wxString strFullPath = strIcon.BeforeLast(wxT(',')),
 354             strIndex = strIcon.AfterLast(wxT(','));
 355
 356             // index may be omitted, in which case BeforeLast(',') is empty and
 357             // AfterLast(',') is the whole string
 358             if ( strFullPath.IsEmpty() ) {
 359                 strFullPath = strIndex;
 360                 strIndex = wxT("0");
 361             }
 362
 363             wxString strExpPath = wxExpandEnvVars(strFullPath);
 364             // here we need C based counting!
 365             int nIndex = wxAtoi(strIndex);
 366
 367             HICON hIcon = ExtractIcon(GetModuleHandle(NULL), strExpPath, nIndex);
 368             switch ( (int)hIcon ) {
 369                 case 0: // means no icons were found
 370                 case 1: // means no such file or it wasn't a DLL/EXE/OCX/ICO/...
 371                     wxLogDebug(wxT("incorrect registry entry '%s': no such icon."),
 372                                key.GetName().c_str());
 373                     break;
 374
 375                 default:
 376                     icon->SetHICON((WXHICON)hIcon);
 377                     if ( iconIndex )
 378                         *iconIndex = nIndex;
 379                     if ( iconFile )
 380                         *iconFile = strFullPath;
 381                     return TRUE;
 382             }
 383         }
 384     }
 385
 386     // no such file type or no value or incorrect icon entry
 387 #endif // wxUSE_GUI
 388
 389     return FALSE;
 390 }
 391
 392 bool wxFileTypeImpl::GetDescription(wxString *desc) const
 393 {
 394     // suppress possible error messages
 395     wxLogNull nolog;
 396     wxRegKey key(wxRegKey::HKCR, m_strFileType);
 397
 398     if ( key.Open() ) {
 399         // it's the default value of the key
 400         if ( key.QueryValue(wxT(""), *desc) ) {
 401             return TRUE;
 402         }
 403     }
 404
 405     return FALSE;
 406 }
 407
 408 // helper function
 409 wxFileType *
 410 wxMimeTypesManagerImpl::CreateFileType(const wxString& filetype, const wxString& ext)
 411 {
 412     wxFileType *fileType = new wxFileType;
 413     fileType->m_impl->Init(filetype, ext);
 414     return fileType;
 415 }
 416
 417 // extension -> file type
 418 wxFileType *
 419 wxMimeTypesManagerImpl::GetFileTypeFromExtension(const wxString& ext)
 420 {
 421     // add the leading point if necessary
 422     wxString str;
 423     if ( ext[0u] != wxT('.') ) {
 424         str = wxT('.');
 425     }
 426     str << ext;
 427
 428     // suppress possible error messages
 429     wxLogNull nolog;
 430
 431     bool knownExtension = FALSE;
 432
 433     wxString strFileType;
 434     wxRegKey key(wxRegKey::HKCR, str);
 435     if ( key.Open() ) {
 436         // it's the default value of the key
 437         if ( key.QueryValue(wxT(""), strFileType) ) {
 438             // create the new wxFileType object
 439             return CreateFileType(strFileType, ext);
 440         }
 441         else {
 442             // this extension doesn't have a filetype, but it's known to the
 443             // system and may be has some other useful keys (open command or
 444             // content-type), so still return a file type object for it
 445             knownExtension = TRUE;
 446         }
 447     }
 448
 449     if ( !knownExtension )
 450     {
 451         // unknown extension
 452         return NULL;
 453     }
 454
 455     return CreateFileType(wxEmptyString, ext);
 456 }
 457
 458 /*
 459 wxFileType *
 460 wxMimeTypesManagerImpl::GetOrAllocateFileTypeFromExtension(const wxString& ext)
 461 {
 462     wxFileType *fileType = GetFileTypeFromExtension(ext);
 463     if ( !fileType )
 464     {
 465         fileType = CreateFileType(wxEmptyString, ext);
 466     }
 467
 468     return fileType;
 469 }
 470 */
 471
 472 // MIME type -> extension -> file type
 473 wxFileType *
 474 wxMimeTypesManagerImpl::GetFileTypeFromMimeType(const wxString& mimeType)
 475 {
 476     wxString strKey = MIME_DATABASE_KEY;
 477     strKey << mimeType;
 478
 479     // suppress possible error messages
 480     wxLogNull nolog;
 481
 482     wxString ext;
 483     wxRegKey key(wxRegKey::HKCR, strKey);
 484     if ( key.Open() ) {
 485         if ( key.QueryValue(wxT("Extension"), ext) ) {
 486             return GetFileTypeFromExtension(ext);
 487         }
 488     }
 489
 490     // unknown MIME type
 491     return NULL;
 492 }
 493
 494 size_t wxMimeTypesManagerImpl::EnumAllFileTypes(wxArrayString& mimetypes)
 495 {
 496     // enumerate all keys under MIME_DATABASE_KEY
 497     wxRegKey key(wxRegKey::HKCR, MIME_DATABASE_KEY);
 498
 499     wxString type;
 500     long cookie;
 501     bool cont = key.GetFirstKey(type, cookie);
 502     while ( cont )
 503     {
 504         mimetypes.Add(type);
 505
 506         cont = key.GetNextKey(type, cookie);
 507     }
 508
 509     return mimetypes.GetCount();
 510 }
 511
 512 // ----------------------------------------------------------------------------
 513 // create a new association
 514 // ----------------------------------------------------------------------------
 515
 516 wxFileType *wxMimeTypesManagerImpl::Associate(const wxFileTypeInfo& ftInfo)
 517 {
 518     wxCHECK_MSG( !ftInfo.GetExtensions().IsEmpty(), NULL,
 519                  _T("Associate() needs extension") );
 520
 521     bool ok = FALSE ;
 522     int iExtCount = 0 ;
 523     wxString filetype;
 524     wxString extWithDot;
 525
 526     wxString ext = ftInfo.GetExtensions()[iExtCount];
 527
 528     wxCHECK_MSG( !ext.empty(), NULL,
 529                  _T("Associate() needs non empty extension") );
 530
 531     if ( ext[0u] != _T('.') )
 532         extWithDot = _T('.');
 533     extWithDot += ext;
 534
 535     // start by setting the HKCR\\.ext entries
 536     // default is filetype; content type is mimetype
 537     const wxString& filetypeOrig = ftInfo.GetShortDesc();
 538
 539     wxRegKey key(wxRegKey::HKCR, extWithDot);
 540     if ( !key.Exists() )
 541     {
 542         // create the mapping from the extension to the filetype
 543         ok = key.Create();
 544         if ( ok )
 545         {
 546
 547             if ( filetypeOrig.empty() )
 548             {
 549                 // make it up from the extension
 550                 filetype << extWithDot.c_str() + 1 << _T("_file");
 551             }
 552             else
 553             {
 554                 // just use the provided one
 555                 filetype = filetypeOrig;
 556             }
 557
 558             ok = key.SetValue(_T(""), filetype);
 559         }
 560         }
 561         else
 562         {
 563             // key already exists, maybe we want to change it ??
 564             if (!filetypeOrig.empty())
 565                 {
 566                     filetype = filetypeOrig;
 567                     ok = key.SetValue(_T(""), filetype);
 568                 }
 569             else
 570                 {
 571                     ok = key.QueryValue(_T(""), filetype);
 572                 }
 573         }
 574         // now set a mimetypeif we have it, but ignore it if none
 575         const wxString& mimetype = ftInfo.GetMimeType();
 576         if ( !mimetype.empty() )
 577         {
 578             // set the MIME type
 579             ok = key.SetValue(_T("Content Type"), mimetype);
 580
 581             if ( ok )
 582             {
 583                 // create the MIME key
 584                 wxString strKey = MIME_DATABASE_KEY;
 585                 strKey << mimetype;
 586                 wxRegKey keyMIME(wxRegKey::HKCR, strKey);
 587                 ok = keyMIME.Create();
 588
 589                 if ( ok )
 590                 {
 591                     // and provide a back link to the extension
 592                     ok = keyMIME.SetValue(_T("Extension"), extWithDot);
 593                 }
 594             }
 595         }
 596
 597
 598     // now make other extensions have the same filetype
 599
 600     for (iExtCount=1; iExtCount < ftInfo.GetExtensionsCount(); iExtCount++ )
 601         {
 602             ext = ftInfo.GetExtensions()[iExtCount];
 603             if ( ext[0u] != _T('.') )
 604                extWithDot = _T('.');
 605             extWithDot += ext;
 606
 607             wxRegKey key(wxRegKey::HKCR, extWithDot);
 608             if ( !key.Exists() ) ok = key.Create();
 609             ok = key.SetValue(_T(""), filetype);
 610
 611         // now set any mimetypes we may have, but ignore it if none
 612         const wxString& mimetype = ftInfo.GetMimeType();
 613         if ( !mimetype.empty() )
 614         {
 615             // set the MIME type
 616             ok = key.SetValue(_T("Content Type"), mimetype);
 617
 618         if ( ok )
 619         {
 620                 // create the MIME key
 621                 wxString strKey = MIME_DATABASE_KEY;
 622                 strKey << mimetype;
 623                 wxRegKey keyMIME(wxRegKey::HKCR, strKey);
 624                 ok = keyMIME.Create();
 625
 626         if ( ok )
 627         {
 628                     // and provide a back link to the extension
 629                     ok = keyMIME.SetValue(_T("Extension"), extWithDot);
 630         }
 631         }
 632     }
 633
 634
 635     } // end of for loop; all extensions now point to HKCR\.ext\Default
 636
 637     // create the filetype key itself (it will be empty for now, but
 638     // SetCommand(), SetDefaultIcon() &c will use it later)
 639     wxRegKey keyFT(wxRegKey::HKCR, filetype);
 640     ok = keyFT.Create();
 641
 642     wxFileType *ft = NULL;
 643     ft = CreateFileType(filetype, extWithDot);
 644
 645     if (ft)
 646     {
 647             if (! ftInfo.GetOpenCommand ().IsEmpty() ) ft->SetCommand (ftInfo.GetOpenCommand (), wxT("open"  ) );
 648             if (! ftInfo.GetPrintCommand().IsEmpty() ) ft->SetCommand (ftInfo.GetPrintCommand(), wxT("print" ) );
 649             // chris: I don't like the ->m_impl-> here FIX this ??
 650             if (! ftInfo.GetDescription ().IsEmpty() ) ft->m_impl->SetDescription (ftInfo.GetDescription ()) ;
 651             if (! ftInfo.GetIconFile().IsEmpty() ) ft->SetDefaultIcon (ftInfo.GetIconFile(), ftInfo.GetIconIndex() );
 652
 653         }
 654     return ft;
 655 }
 656
 657 bool wxFileTypeImpl::SetCommand(const wxString& cmd,
 658                                 const wxString& verb,
 659                                 bool WXUNUSED(overwriteprompt))
 660 {
 661     wxCHECK_MSG( !m_ext.IsEmpty() && !verb.IsEmpty(), FALSE,
 662                  _T("SetCommand() needs an extension and a verb") );
 663
 664     if ( !EnsureExtKeyExists() )
 665         return FALSE;
 666
 667     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 668 #if 0
 669     if ( rkey.Exists() && overwriteprompt )
 670     {
 671 #if wxUSE_GUI
 672         wxString old;
 673         rkey.QueryValue(wxT(""), old);
 674         if ( wxMessageBox
 675              (
 676                 wxString::Format(
 677                     _("Do you want to overwrite the command used to %s "
 678                       "files with extension \"%s\" ?\nCurrent value is \n%s, "
 679                       "\nNew value is \n%s %1"), // bug here FIX need %1 ??
 680                     verb.c_str(),
 681                     m_ext.c_str(),
 682                     old.c_str(),
 683                     cmd.c_str()),
 684                 _("Confirm registry update"),
 685                 wxYES_NO | wxICON_QUESTION
 686              ) != wxYES )
 687 #endif // wxUSE_GUI
 688         {
 689             // cancelled by user
 690             return FALSE;
 691         }
 692     }
 693 #endif
 694     // TODO:
 695     // 1. translate '%s' to '%1' instead of always adding it
 696     // 2. create DDEExec value if needed (undo GetCommand)
 697     return rkey.Create() && rkey.SetValue(_T(""), cmd + _T(" \"%1\"") );
 698 }
 699
 700 /* // no longer used
 701 bool wxFileTypeImpl::SetMimeType(const wxString& mimeTypeOrig)
 702 {
 703     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE, _T("SetMimeType() needs extension") );
 704
 705     if ( !EnsureExtKeyExists() )
 706         return FALSE;
 707
 708     // VZ: is this really useful? (FIXME)
 709     wxString mimeType;
 710     if ( !mimeTypeOrig )
 711     {
 712         // make up a default value for it
 713         wxString cmd;
 714         wxSplitPath(GetCommand(_T("open")), NULL, &cmd, NULL);
 715         mimeType << _T("application/x-") << cmd;
 716     }
 717     else
 718     {
 719         mimeType = mimeTypeOrig;
 720     }
 721
 722     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 723     return rkey.Create() && rkey.SetValue(_T("Content Type"), mimeType);
 724 }
 725 */
 726
 727 bool wxFileTypeImpl::SetDefaultIcon(const wxString& cmd, int index)
 728 {
 729     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE, _T("SetDefaultIcon() needs extension") );
 730     wxCHECK_MSG( !m_strFileType.IsEmpty(), FALSE, _T("File key not found") );
 731 //    the next line fails on a SMBshare, I think because it is case mangled
 732 //    wxCHECK_MSG( !wxFileExists(cmd), FALSE, _T("Icon file not found.") );
 733
 734     if ( !EnsureExtKeyExists() )
 735         return FALSE;
 736
 737     wxRegKey rkey(wxRegKey::HKCR, m_strFileType + _T("\\DefaultIcon"));
 738
 739     return rkey.Create() &&
 740            rkey.SetValue(_T(""),
 741                          wxString::Format(_T("%s,%d"), cmd.c_str(), index));
 742 }
 743
 744 bool wxFileTypeImpl::SetDescription (const wxString& desc)
 745 {
 746     wxCHECK_MSG( !m_strFileType.IsEmpty(), FALSE, _T("File key not found") );
 747     wxCHECK_MSG( !desc.IsEmpty(), FALSE, _T("No file description supplied") );
 748
 749     if ( !EnsureExtKeyExists() )
 750         return FALSE;
 751
 752     wxRegKey rkey(wxRegKey::HKCR, m_strFileType );
 753
 754     return rkey.Create() &&
 755            rkey.SetValue(_T(""), desc);
 756 }
 757
 758 // ----------------------------------------------------------------------------
 759 // remove file association
 760 // ----------------------------------------------------------------------------
 761
 762 bool wxFileTypeImpl::Unassociate()
 763 {
 764     bool result = TRUE;
 765     if ( !RemoveOpenCommand() )
 766         result = FALSE;
 767     if ( !RemoveDefaultIcon() )
 768         result = FALSE;
 769     if ( !RemoveMimeType() )
 770         result = FALSE;
 771    if ( !RemoveDescription() )
 772         result = FALSE;
 773
 774 /*
 775     //this might hold other keys, eg some have CSLID keys
 776     if ( result )
 777     {
 778         // delete the root key
 779         wxRegKey key(wxRegKey::HKCR, m_ext);
 780         if ( key.Exists() )
 781             result = key.DeleteSelf();
 782     }
 783 */
 784     return result;
 785 }
 786
 787 bool wxFileTypeImpl::RemoveOpenCommand()
 788 {
 789    return RemoveCommand(_T("open"));
 790 }
 791
 792 bool wxFileTypeImpl::RemoveCommand(const wxString& verb)
 793 {
 794     wxCHECK_MSG( !m_ext.IsEmpty() && !verb.IsEmpty(), FALSE,
 795                  _T("RemoveCommand() needs an extension and a verb") );
 796
 797     wxString  sKey = m_strFileType;
 798     wxRegKey rkey(wxRegKey::HKCR, GetVerbPath(verb));
 799
 800     // if the key already doesn't exist, it's a success
 801     return !rkey.Exists() || rkey.DeleteSelf();
 802 }
 803
 804 bool wxFileTypeImpl::RemoveMimeType()
 805 {
 806     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE, _T("RemoveMimeType() needs extension") );
 807
 808     wxRegKey rkey(wxRegKey::HKCR, m_ext);
 809     return !rkey.Exists() || rkey.DeleteSelf();
 810 }
 811
 812 bool wxFileTypeImpl::RemoveDefaultIcon()
 813 {
 814     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE,
 815                  _T("RemoveDefaultIcon() needs extension") );
 816
 817     wxRegKey rkey (wxRegKey::HKCR, m_strFileType  + _T("\\DefaultIcon"));
 818     return !rkey.Exists() || rkey.DeleteSelf();
 819 }
 820
 821 bool wxFileTypeImpl::RemoveDescription()
 822 {
 823     wxCHECK_MSG( !m_ext.IsEmpty(), FALSE,
 824                  _T("RemoveDescription() needs extension") );
 825
 826     wxRegKey rkey (wxRegKey::HKCR, m_strFileType );
 827     return !rkey.Exists() || rkey.DeleteSelf();
 828 }
 829
 830 #endif
 831   // __WIN16__
 832
 833 #endif // wxUSE_MIMETYPE