src/common/mimecmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/mimecmn.cpp
   3 // Purpose:     classes and functions to manage MIME types
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 //  Chris Elliott (biol75@york.ac.uk) 5 Dec 00: write support for Win32
   7 // Created:     23.09.98
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  10 // Licence:     wxWindows license (part of wxExtra library)
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #ifdef    __GNUG__
  22     #pragma implementation "mimetypebase.h"
  23 #endif
  24
  25 // for compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #if wxUSE_MIMETYPE
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/module.h"
  36 #endif
  37 // this one is needed for MSVC5
  38 #include "wx/module.h"
  39
  40 #ifndef WX_PRECOMP
  41   #include "wx/string.h"
  42   #if wxUSE_GUI
  43     #include "wx/icon.h"
  44   #endif
  45 #endif //WX_PRECOMP
  46
  47 #include "wx/log.h"
  48 #include "wx/file.h"
  49 #include "wx/intl.h"
  50 #include "wx/dynarray.h"
  51 #include "wx/confbase.h"
  52
  53 #include "wx/mimetype.h"
  54
  55 // other standard headers
  56 #include <ctype.h>
  57
  58 // implementation classes:
  59 #if defined(__WXMSW__)
  60     #include "wx/msw/mimetype.h"
  61 #elif defined(__WXMAC__)
  62     #include "wx/mac/mimetype.h"
  63 #elif defined(__WXPM__)
  64     #include "wx/os2/mimetype.h"
  65 #else // Unix
  66     #include "wx/unix/mimetype.h"
  67 #endif
  68
  69 // ============================================================================
  70 // common classes
  71 // ============================================================================
  72
  73 // ----------------------------------------------------------------------------
  74 // wxFileTypeInfo
  75 // ----------------------------------------------------------------------------
  76
  77 wxFileTypeInfo::wxFileTypeInfo(const char *mimeType,
  78                                const char *openCmd,
  79                                const char *printCmd,
  80                                const char *desc,
  81                                ...)
  82               : m_mimeType(mimeType),
  83                 m_openCmd(openCmd),
  84                 m_printCmd(printCmd),
  85                 m_desc(desc)
  86 {
  87     va_list argptr;
  88     va_start(argptr, desc);
  89
  90     for ( ;; )
  91     {
  92         const char *ext = va_arg(argptr, const char *);
  93         if ( !ext )
  94         {
  95             // NULL terminates the list
  96             break;
  97         }
  98
  99         m_exts.Add(ext);
 100     }
 101
 102     va_end(argptr);
 103 }
 104
 105
 106 wxFileTypeInfo::wxFileTypeInfo(const wxArrayString& sArray)
 107 {
 108     m_mimeType = sArray [0u];
 109     m_openCmd  = sArray [1u];
 110     m_printCmd = sArray [2u];
 111     m_desc     = sArray [3u];
 112
 113     size_t count = sArray.GetCount();
 114     for ( size_t i = 4; i < count; i++ )
 115     {
 116         m_exts.Add(sArray[i]);
 117     }
 118 }
 119
 120 #include "wx/arrimpl.cpp"
 121 WX_DEFINE_OBJARRAY(wxArrayFileTypeInfo);
 122
 123 // ============================================================================
 124 // implementation of the wrapper classes
 125 // ============================================================================
 126
 127 // ----------------------------------------------------------------------------
 128 // wxFileType
 129 // ----------------------------------------------------------------------------
 130
 131 /* static */
 132 wxString wxFileType::ExpandCommand(const wxString& command,
 133                                    const wxFileType::MessageParameters& params)
 134 {
 135     bool hasFilename = FALSE;
 136
 137     wxString str;
 138     for ( const wxChar *pc = command.c_str(); *pc != wxT('\0'); pc++ ) {
 139         if ( *pc == wxT('%') ) {
 140             switch ( *++pc ) {
 141                 case wxT('s'):
 142                     // '%s' expands into file name (quoted because it might
 143                     // contain spaces) - except if there are already quotes
 144                     // there because otherwise some programs may get confused
 145                     // by double double quotes
 146 #if 0
 147                     if ( *(pc - 2) == wxT('"') )
 148                         str << params.GetFileName();
 149                     else
 150                         str << wxT('"') << params.GetFileName() << wxT('"');
 151 #endif
 152                     str << params.GetFileName();
 153                     hasFilename = TRUE;
 154                     break;
 155
 156                 case wxT('t'):
 157                     // '%t' expands into MIME type (quote it too just to be
 158                     // consistent)
 159                     str << wxT('\'') << params.GetMimeType() << wxT('\'');
 160                     break;
 161
 162                 case wxT('{'):
 163                     {
 164                         const wxChar *pEnd = wxStrchr(pc, wxT('}'));
 165                         if ( pEnd == NULL ) {
 166                             wxString mimetype;
 167                             wxLogWarning(_("Unmatched '{' in an entry for mime type %s."),
 168                                          params.GetMimeType().c_str());
 169                             str << wxT("%{");
 170                         }
 171                         else {
 172                             wxString param(pc + 1, pEnd - pc - 1);
 173                             str << wxT('\'') << params.GetParamValue(param) << wxT('\'');
 174                             pc = pEnd;
 175                         }
 176                     }
 177                     break;
 178
 179                 case wxT('n'):
 180                 case wxT('F'):
 181                     // TODO %n is the number of parts, %F is an array containing
 182                     //      the names of temp files these parts were written to
 183                     //      and their mime types.
 184                     break;
 185
 186                 default:
 187                     wxLogDebug(wxT("Unknown field %%%c in command '%s'."),
 188                                *pc, command.c_str());
 189                     str << *pc;
 190             }
 191         }
 192         else {
 193             str << *pc;
 194         }
 195     }
 196
 197     // metamail(1) man page states that if the mailcap entry doesn't have '%s'
 198     // the program will accept the data on stdin so normally we should append
 199     // "< %s" to the end of the command in such case, but not all commands
 200     // behave like this, in particular a common test is 'test -n "$DISPLAY"'
 201     // and appending "< %s" to this command makes the test fail... I don't
 202     // know of the correct solution, try to guess what we have to do.
 203
 204     // test now carried out on reading file so test should never get here
 205     if ( !hasFilename && !str.IsEmpty()
 206 #ifdef __UNIX__
 207                       && !str.StartsWith(_T("test "))
 208 #endif // Unix
 209        ) {
 210         str << wxT(" < '") << params.GetFileName() << wxT('\'');
 211     }
 212
 213     return str;
 214 }
 215
 216 wxFileType::wxFileType(const wxFileTypeInfo& info)
 217 {
 218     m_info = &info;
 219     m_impl = NULL;
 220 }
 221
 222 wxFileType::wxFileType()
 223 {
 224     m_info = NULL;
 225     m_impl = new wxFileTypeImpl;
 226 }
 227
 228 wxFileType::~wxFileType()
 229 {
 230     if ( m_impl )
 231         delete m_impl;
 232 }
 233
 234 bool wxFileType::GetExtensions(wxArrayString& extensions)
 235 {
 236     if ( m_info )
 237     {
 238         extensions = m_info->GetExtensions();
 239         return TRUE;
 240     }
 241
 242     return m_impl->GetExtensions(extensions);
 243 }
 244
 245 bool wxFileType::GetMimeType(wxString *mimeType) const
 246 {
 247     wxCHECK_MSG( mimeType, FALSE, _T("invalid parameter in GetMimeType") );
 248
 249     if ( m_info )
 250     {
 251         *mimeType = m_info->GetMimeType();
 252
 253         return TRUE;
 254     }
 255
 256     return m_impl->GetMimeType(mimeType);
 257 }
 258
 259 bool wxFileType::GetMimeTypes(wxArrayString& mimeTypes) const
 260 {
 261     if ( m_info )
 262     {
 263         mimeTypes.Clear();
 264         mimeTypes.Add(m_info->GetMimeType());
 265
 266         return TRUE;
 267     }
 268
 269     return m_impl->GetMimeTypes(mimeTypes);
 270 }
 271
 272 bool wxFileType::GetIcon(wxIcon *icon,
 273                          wxString *iconFile,
 274                          int *iconIndex) const
 275 {
 276     if ( m_info )
 277     {
 278         if ( iconFile )
 279             *iconFile = m_info->GetIconFile();
 280         if ( iconIndex )
 281             *iconIndex = m_info->GetIconIndex();
 282
 283 #if wxUSE_GUI
 284         if ( icon && !m_info->GetIconFile().empty() )
 285         {
 286             // FIXME: what about the index?
 287             icon->LoadFile(m_info->GetIconFile());
 288         }
 289 #endif // wxUSE_GUI
 290
 291         return TRUE;
 292     }
 293
 294 #if defined(__WXMSW__) || defined(__UNIX__)
 295     return m_impl->GetIcon(icon, iconFile, iconIndex);
 296 #else
 297     return m_impl->GetIcon(icon);
 298 #endif
 299 }
 300
 301 bool wxFileType::GetDescription(wxString *desc) const
 302 {
 303     wxCHECK_MSG( desc, FALSE, _T("invalid parameter in GetDescription") );
 304
 305     if ( m_info )
 306     {
 307         *desc = m_info->GetDescription();
 308
 309         return TRUE;
 310     }
 311
 312     return m_impl->GetDescription(desc);
 313 }
 314
 315 bool
 316 wxFileType::GetOpenCommand(wxString *openCmd,
 317                            const wxFileType::MessageParameters& params) const
 318 {
 319     wxCHECK_MSG( openCmd, FALSE, _T("invalid parameter in GetOpenCommand") );
 320
 321     if ( m_info )
 322     {
 323         *openCmd = ExpandCommand(m_info->GetOpenCommand(), params);
 324
 325         return TRUE;
 326     }
 327
 328     return m_impl->GetOpenCommand(openCmd, params);
 329 }
 330
 331 wxString wxFileType::GetOpenCommand(const wxString& filename) const
 332 {
 333     wxString cmd;
 334     if ( !GetOpenCommand(&cmd, filename) )
 335     {
 336         // return empty string to indicate an error
 337         cmd.clear();
 338     }
 339
 340     return cmd;
 341 }
 342
 343 bool
 344 wxFileType::GetPrintCommand(wxString *printCmd,
 345                             const wxFileType::MessageParameters& params) const
 346 {
 347     wxCHECK_MSG( printCmd, FALSE, _T("invalid parameter in GetPrintCommand") );
 348
 349     if ( m_info )
 350     {
 351         *printCmd = ExpandCommand(m_info->GetPrintCommand(), params);
 352
 353         return TRUE;
 354     }
 355
 356     return m_impl->GetPrintCommand(printCmd, params);
 357 }
 358
 359
 360 size_t wxFileType::GetAllCommands(wxArrayString *verbs,
 361                                   wxArrayString *commands,
 362                                   const wxFileType::MessageParameters& params) const
 363 {
 364     if ( verbs )
 365         verbs->Clear();
 366     if ( commands )
 367         commands->Clear();
 368
 369 #if defined (__WXMSW__)  || defined(__UNIX__)
 370     return m_impl->GetAllCommands(verbs, commands, params);
 371 #else // !__WXMSW__ || Unix
 372     // we don't know how to retrieve all commands, so just try the 2 we know
 373     // about
 374     size_t count = 0;
 375     wxString cmd;
 376     if ( GetOpenCommand(&cmd, params) )
 377     {
 378         if ( verbs )
 379             verbs->Add(_T("Open"));
 380         if ( commands )
 381             commands->Add(cmd);
 382         count++;
 383     }
 384
 385     if ( GetPrintCommand(&cmd, params) )
 386     {
 387         if ( verbs )
 388             verbs->Add(_T("Print"));
 389         if ( commands )
 390             commands->Add(cmd);
 391
 392         count++;
 393     }
 394
 395     return count;
 396 #endif // __WXMSW__/| __UNIX__
 397 }
 398
 399 bool wxFileType::Unassociate()
 400 {
 401 #if defined(__WXMSW__)
 402     return m_impl->Unassociate();
 403 #elif defined(__UNIX__) && !defined(__WXPM__)
 404     return m_impl->Unassociate(this);
 405 #else
 406     wxFAIL_MSG( _T("not implemented") ); // TODO
 407     return FALSE;
 408 #endif
 409 }
 410
 411 bool wxFileType::SetCommand(const wxString& cmd, const wxString& verb,
 412 bool overwriteprompt)
 413 {
 414 #if defined (__WXMSW__)  || defined(__UNIX__)
 415     return m_impl->SetCommand(cmd, verb, overwriteprompt);
 416 #else
 417     wxFAIL_MSG(_T("not implemented"));
 418     return FALSE;
 419 #endif
 420 }
 421
 422 bool wxFileType::SetDefaultIcon(const wxString& cmd, int index)
 423 {
 424     wxString sTmp = cmd;
 425 #ifdef __WXMSW__
 426     // VZ: should we do this?
 427     // chris elliott : only makes sense in MS windows
 428     if ( sTmp.empty() )
 429         GetOpenCommand(&sTmp, wxFileType::MessageParameters("", ""));
 430 #endif
 431     wxCHECK_MSG( !sTmp.empty(), FALSE, _T("need the icon file") );
 432
 433 #if defined (__WXMSW__) || defined(__UNIX__)
 434     return m_impl->SetDefaultIcon (cmd, index);
 435 #else
 436     wxFAIL_MSG(_T("not implemented"));
 437
 438     return FALSE;
 439 #endif
 440 }
 441
 442
 443 // ----------------------------------------------------------------------------
 444 // wxMimeTypesManager
 445 // ----------------------------------------------------------------------------
 446
 447 void wxMimeTypesManager::EnsureImpl()
 448 {
 449     if ( !m_impl )
 450         m_impl = new wxMimeTypesManagerImpl;
 451 }
 452
 453 bool wxMimeTypesManager::IsOfType(const wxString& mimeType,
 454                                   const wxString& wildcard)
 455 {
 456     wxASSERT_MSG( mimeType.Find(wxT('*')) == wxNOT_FOUND,
 457                   wxT("first MIME type can't contain wildcards") );
 458
 459     // all comparaisons are case insensitive (2nd arg of IsSameAs() is FALSE)
 460     if ( wildcard.BeforeFirst(wxT('/')).
 461             IsSameAs(mimeType.BeforeFirst(wxT('/')), FALSE) )
 462     {
 463         wxString strSubtype = wildcard.AfterFirst(wxT('/'));
 464
 465         if ( strSubtype == wxT("*") ||
 466              strSubtype.IsSameAs(mimeType.AfterFirst(wxT('/')), FALSE) )
 467         {
 468             // matches (either exactly or it's a wildcard)
 469             return TRUE;
 470         }
 471     }
 472
 473     return FALSE;
 474 }
 475
 476 wxMimeTypesManager::wxMimeTypesManager()
 477 {
 478     m_impl = NULL;
 479 }
 480
 481 wxMimeTypesManager::~wxMimeTypesManager()
 482 {
 483     if ( m_impl )
 484         delete m_impl;
 485 }
 486
 487 bool wxMimeTypesManager::Unassociate(wxFileType *ft)
 488 {
 489 #if defined(__UNIX__) && !defined(__WXPM__) && !defined(__CYGWIN__)
 490     return m_impl->Unassociate(ft);
 491 #else
 492     return ft->Unassociate();
 493 #endif
 494 }
 495
 496
 497 wxFileType *
 498 wxMimeTypesManager::Associate(const wxFileTypeInfo& ftInfo)
 499 {
 500     EnsureImpl();
 501
 502 #if defined(__WXMSW__) || (defined(__UNIX__) && !defined(__WXPM__))
 503     return m_impl->Associate(ftInfo);
 504 #else // other platforms
 505     wxFAIL_MSG( _T("not implemented") ); // TODO
 506     return NULL;
 507 #endif // platforms
 508 }
 509
 510 wxFileType *
 511 wxMimeTypesManager::GetFileTypeFromExtension(const wxString& ext)
 512 {
 513     EnsureImpl();
 514     wxFileType *ft = m_impl->GetFileTypeFromExtension(ext);
 515
 516     if ( !ft ) {
 517         // check the fallbacks
 518         //
 519         // TODO linear search is potentially slow, perhaps we should use a
 520         //       sorted array?
 521         size_t count = m_fallbacks.GetCount();
 522         for ( size_t n = 0; n < count; n++ ) {
 523             if ( m_fallbacks[n].GetExtensions().Index(ext) != wxNOT_FOUND ) {
 524                 ft = new wxFileType(m_fallbacks[n]);
 525
 526                 break;
 527             }
 528         }
 529     }
 530
 531     return ft;
 532 }
 533
 534 wxFileType *
 535 wxMimeTypesManager::GetFileTypeFromMimeType(const wxString& mimeType)
 536 {
 537     EnsureImpl();
 538     wxFileType *ft = m_impl->GetFileTypeFromMimeType(mimeType);
 539
 540     if ( ft ) {
 541         // check the fallbacks
 542         //
 543         // TODO linear search is potentially slow, perhaps we should use a sorted
 544         //      array?
 545         size_t count = m_fallbacks.GetCount();
 546         for ( size_t n = 0; n < count; n++ ) {
 547             if ( wxMimeTypesManager::IsOfType(mimeType,
 548                                               m_fallbacks[n].GetMimeType()) ) {
 549                 ft = new wxFileType(m_fallbacks[n]);
 550
 551                 break;
 552             }
 553         }
 554     }
 555
 556     return ft;
 557 }
 558
 559 bool wxMimeTypesManager::ReadMailcap(const wxString& filename, bool fallback)
 560 {
 561     EnsureImpl();
 562     return m_impl->ReadMailcap(filename, fallback);
 563 }
 564
 565 bool wxMimeTypesManager::ReadMimeTypes(const wxString& filename)
 566 {
 567     EnsureImpl();
 568     return m_impl->ReadMimeTypes(filename);
 569 }
 570
 571 void wxMimeTypesManager::AddFallbacks(const wxFileTypeInfo *filetypes)
 572 {
 573     EnsureImpl();
 574     for ( const wxFileTypeInfo *ft = filetypes; ft && ft->IsValid(); ft++ ) {
 575         AddFallback(*ft);
 576     }
 577 }
 578
 579 size_t wxMimeTypesManager::EnumAllFileTypes(wxArrayString& mimetypes)
 580 {
 581     EnsureImpl();
 582     size_t countAll = m_impl->EnumAllFileTypes(mimetypes);
 583
 584     // add the fallback filetypes
 585     size_t count = m_fallbacks.GetCount();
 586     for ( size_t n = 0; n < count; n++ ) {
 587         if ( mimetypes.Index(m_fallbacks[n].GetMimeType()) == wxNOT_FOUND ) {
 588             mimetypes.Add(m_fallbacks[n].GetMimeType());
 589             countAll++;
 590         }
 591     }
 592
 593     return countAll;
 594 }
 595
 596 void wxMimeTypesManager::Initialize(int mcapStyle,
 597                                     const wxString& sExtraDir)
 598 {
 599 #if defined(__UNIX__) && !defined(__WXPM__) && !defined(__CYGWIN__)
 600     EnsureImpl();
 601
 602     m_impl->Initialize(mcapStyle, sExtraDir);
 603 #else
 604         (void)mcapStyle;
 605         (void)sExtraDir;
 606 #endif // Unix
 607 }
 608
 609 // and this function clears all the data from the manager
 610 void wxMimeTypesManager::ClearData()
 611 {
 612 #if defined(__UNIX__) && !defined(__WXPM__) && !defined(__CYGWIN__)
 613     EnsureImpl();
 614
 615     m_impl->ClearData();
 616 #endif // Unix
 617 }
 618
 619 // ----------------------------------------------------------------------------
 620 // global data and wxMimeTypeCmnModule
 621 // ----------------------------------------------------------------------------
 622
 623 // private object
 624 static wxMimeTypesManager gs_mimeTypesManager;
 625
 626 // and public pointer
 627 wxMimeTypesManager *wxTheMimeTypesManager = &gs_mimeTypesManager;
 628
 629 class wxMimeTypeCmnModule: public wxModule
 630 {
 631 public:
 632     wxMimeTypeCmnModule() : wxModule() { }
 633     virtual bool OnInit() { return TRUE; }
 634     virtual void OnExit()
 635     {
 636         // this avoids false memory leak allerts:
 637         if ( gs_mimeTypesManager.m_impl != NULL )
 638         {
 639             delete gs_mimeTypesManager.m_impl;
 640             gs_mimeTypesManager.m_impl = NULL;
 641             gs_mimeTypesManager.m_fallbacks.Clear();
 642         }
 643     }
 644
 645     DECLARE_DYNAMIC_CLASS(wxMimeTypeCmnModule)
 646 };
 647
 648 IMPLEMENT_DYNAMIC_CLASS(wxMimeTypeCmnModule, wxModule)
 649
 650 #endif // wxUSE_MIMETYPE