src/os2/dir.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        os2/dir.cpp
   3 // Purpose:     wxDir implementation for OS/2
   4 // Author:      Vadim Zeitlin
   5 // Modified by: Stefan Neis
   6 // Created:     08.12.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "dir.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/os2/private.h"
  29     #include "wx/intl.h"
  30     #include "wx/log.h"
  31 #endif // PCH
  32
  33 #include "wx/dir.h"
  34 #include "wx/filefn.h"          // for wxMatchWild
  35
  36 #include <sys/types.h>
  37
  38 #define INCL_DOSFILEMGR
  39 #define INCL_DOSERRORS
  40 #include <os2.h>
  41
  42 #ifdef __EMX__
  43 #include <dirent.h>
  44 #endif
  45
  46 // ----------------------------------------------------------------------------
  47 // define the types and functions used for file searching
  48 // ----------------------------------------------------------------------------
  49
  50 typedef FILEFINDBUF3                FIND_STRUCT;
  51 typedef HDIR                        FIND_DATA;
  52 typedef ULONG                       FIND_ATTR;
  53
  54 static inline FIND_DATA InitFindData() { return ERROR_INVALID_HANDLE; }
  55
  56 static inline bool IsFindDataOk(
  57   FIND_DATA                     vFd
  58 )
  59 {
  60     return vFd != ERROR_INVALID_HANDLE;
  61 }
  62
  63 static inline void FreeFindData(
  64   FIND_DATA                     vFd
  65 )
  66 {
  67     if (!::DosFindClose(vFd))
  68     {
  69         wxLogLastError(_T("DosFindClose"));
  70     }
  71 }
  72
  73 static inline FIND_DATA FindFirst(
  74   const wxString&               rsSpec
  75 , FIND_STRUCT*                  pFinddata
  76 )
  77 {
  78     ULONG                       ulFindCount = 1;
  79     FIND_DATA                   hDir;
  80     FIND_ATTR                   rc;
  81
  82     rc = ::DosFindFirst( rsSpec.c_str()
  83                         ,&hDir
  84                         ,FILE_NORMAL
  85                         ,pFinddata
  86                         ,sizeof(FILEFINDBUF3)
  87                         ,&ulFindCount
  88                         ,FIL_STANDARD
  89                        );
  90     if (rc != 0)
  91         return 0;
  92     return hDir;
  93 }
  94
  95 static inline bool FindNext(
  96   FIND_DATA                         vFd
  97 , FIND_STRUCT*                      pFinddata
  98 )
  99 {
 100     ULONG                           ulFindCount = 1;
 101
 102     return ::DosFindNext( vFd
 103                          ,pFinddata
 104                          ,sizeof(FILEFINDBUF3)
 105                          ,&ulFindCount
 106                          ) != 0;
 107 }
 108
 109 static const wxChar* GetNameFromFindData(
 110   FIND_STRUCT*                      pFinddata
 111 )
 112 {
 113     return pFinddata->achName;
 114 }
 115
 116 static const FIND_ATTR GetAttrFromFindData(
 117   FIND_STRUCT*                      pFinddata
 118 )
 119 {
 120     return pFinddata->attrFile;
 121 }
 122
 123 static inline bool IsDir(
 124   FIND_ATTR                         vAttr
 125 )
 126 {
 127     return (vAttr & FILE_DIRECTORY) != 0;
 128 }
 129
 130 static inline bool IsHidden(
 131   FIND_ATTR                         vAttr
 132 )
 133 {
 134     return (vAttr & (FILE_HIDDEN | FILE_SYSTEM)) != 0;
 135 }
 136
 137 // ----------------------------------------------------------------------------
 138 // constants
 139 // ----------------------------------------------------------------------------
 140
 141 #ifndef MAX_PATH
 142     #define MAX_PATH 260        // from PM++ headers
 143 #endif
 144
 145 // ----------------------------------------------------------------------------
 146 // macros
 147 // ----------------------------------------------------------------------------
 148
 149 #define M_DIR       ((wxDirData *)m_data)
 150
 151 // ----------------------------------------------------------------------------
 152 // private classes
 153 // ----------------------------------------------------------------------------
 154
 155 // this class stores everything we need to enumerate the files
 156 class wxDirData
 157 {
 158 public:
 159     wxDirData(const wxString& rsDirname);
 160     ~wxDirData();
 161
 162     void SetFileSpec(const wxString& rsFilespec) { m_sFilespec = rsFilespec; }
 163     void SetFlags(int nFlags) { m_nFlags = nFlags; }
 164
 165     const wxString& GetName() const { return m_sDirname; }
 166     void Close();
 167     void Rewind();
 168     bool Read(wxString* rsFilename);
 169
 170 private:
 171     FIND_DATA                       m_vFinddata;
 172     wxString                        m_sDirname;
 173     wxString                        m_sFilespec;
 174     int                             m_nFlags;
 175 }; // end of CLASS wxDirData
 176
 177 // ============================================================================
 178 // implementation
 179 // ============================================================================
 180
 181 // ----------------------------------------------------------------------------
 182 // wxDirData
 183 // ----------------------------------------------------------------------------
 184
 185 wxDirData::wxDirData(
 186   const wxString&                   rsDirname
 187 )
 188 : m_sDirname(rsDirname)
 189 {
 190     m_vFinddata = InitFindData();
 191 } // end of wxDirData::wxDirData
 192
 193 wxDirData::~wxDirData()
 194 {
 195     Close();
 196 } // end of wxDirData::~wxDirData
 197
 198 void wxDirData::Close()
 199 {
 200     if ( IsFindDataOk(m_vFinddata) )
 201     {
 202         FreeFindData(m_vFinddata);
 203         m_vFinddata = InitFindData();
 204     }
 205 } // end of wxDirData::Close
 206
 207 void wxDirData::Rewind()
 208 {
 209     Close();
 210 } // end of wxDirData::Rewind
 211
 212 bool wxDirData::Read(
 213   wxString*                         psFilename
 214 )
 215 {
 216     bool                            bFirst = FALSE;
 217
 218     FILEFINDBUF3                    vFinddata;
 219     #define PTR_TO_FINDDATA (&vFinddata)
 220
 221     if (!IsFindDataOk(m_vFinddata))
 222     {
 223         //
 224         // Open first
 225         //
 226         wxString                    sFilespec = m_sDirname;
 227
 228         if ( !wxEndsWithPathSeparator(sFilespec) )
 229         {
 230             sFilespec += _T('\\');
 231         }
 232         sFilespec += (!m_sFilespec ? _T("*.*") : m_sFilespec.c_str());
 233
 234         m_vFinddata = FindFirst( sFilespec
 235                                 ,PTR_TO_FINDDATA
 236                                );
 237         bFirst = TRUE;
 238     }
 239
 240     if ( !IsFindDataOk(m_vFinddata) )
 241     {
 242         return FALSE;
 243     }
 244
 245     const wxChar*                   zName;
 246     FIND_ATTR                       vAttr;
 247
 248     for ( ;; )
 249     {
 250         if (bFirst)
 251         {
 252             bFirst = FALSE;
 253         }
 254         else
 255         {
 256             if (!FindNext( m_vFinddata
 257                           ,PTR_TO_FINDDATA
 258                          ))
 259             {
 260                 return FALSE;
 261             }
 262         }
 263
 264         zName = GetNameFromFindData(PTR_TO_FINDDATA);
 265         vAttr = GetAttrFromFindData(PTR_TO_FINDDATA);
 266
 267         //
 268         // Don't return "." and ".." unless asked for
 269         //
 270         if ( zName[0] == _T('.') &&
 271              ((zName[1] == _T('.') && zName[2] == _T('\0')) ||
 272               (zName[1] == _T('\0'))) )
 273         {
 274             if (!(m_nFlags & wxDIR_DOTDOT))
 275                 continue;
 276         }
 277
 278         //
 279         // Check the type now
 280         //
 281         if (!(m_nFlags & wxDIR_FILES) && !IsDir(vAttr))
 282         {
 283             //
 284             // It's a file, but we don't want them
 285             //
 286             continue;
 287         }
 288         else if (!(m_nFlags & wxDIR_DIRS) && IsDir(vAttr) )
 289         {
 290             //
 291             // It's a dir, and we don't want it
 292             //
 293             continue;
 294         }
 295
 296         //
 297         // Finally, check whether it's a hidden file
 298         //
 299         if (!(m_nFlags & wxDIR_HIDDEN))
 300         {
 301             if (IsHidden(vAttr))
 302             {
 303                 //
 304                 // It's a hidden file, skip it
 305                 //
 306                 continue;
 307             }
 308         }
 309         *psFilename = zName;
 310         break;
 311     }
 312     return TRUE;
 313 } // end of wxDirData::Read
 314
 315 // ----------------------------------------------------------------------------
 316 // wxDir helpers
 317 // ----------------------------------------------------------------------------
 318
 319 /* static */
 320 bool wxDir::Exists(
 321   const wxString&                   rsDir
 322 )
 323 {
 324     return wxPathExists(rsDir);
 325 } // end of wxDir::Exists
 326
 327 // ----------------------------------------------------------------------------
 328 // wxDir construction/destruction
 329 // ----------------------------------------------------------------------------
 330
 331 wxDir::wxDir(
 332   const wxString&                   rsDirname
 333 )
 334 {
 335     m_data = NULL;
 336
 337     (void)Open(rsDirname);
 338 } // end of wxDir::wxDir
 339
 340 bool wxDir::Open(
 341   const wxString&                   rsDirname
 342 )
 343 {
 344     delete M_DIR;
 345     m_data = new wxDirData(rsDirname);
 346     return TRUE;
 347 } // end of wxDir::Open
 348
 349 bool wxDir::IsOpened() const
 350 {
 351     return m_data != NULL;
 352 } // end of wxDir::IsOpen
 353
 354 wxString wxDir::GetName() const
 355 {
 356     wxString name;
 357     if ( m_data )
 358     {
 359         name = M_DIR->GetName();
 360         if ( !name.empty() )
 361         {
 362             // bring to canonical Windows form
 363             name.Replace(_T("/"), _T("\\"));
 364
 365             if ( name.Last() == _T('\\') )
 366             {
 367                 // chop off the last (back)slash
 368                 name.Truncate(name.length() - 1);
 369             }
 370         }
 371     }
 372
 373     return name;
 374 }
 375
 376 wxDir::~wxDir()
 377 {
 378     delete M_DIR;
 379 } // end of wxDir::~wxDir
 380
 381 // ----------------------------------------------------------------------------
 382 // wxDir enumerating
 383 // ----------------------------------------------------------------------------
 384
 385 bool wxDir::GetFirst(
 386   wxString*                         psFilename
 387 , const wxString&                   rsFilespec
 388 , int                               nFlags
 389 ) const
 390 {
 391     wxCHECK_MSG( IsOpened(), FALSE, _T("must wxDir::Open() first") );
 392     M_DIR->Rewind();
 393     M_DIR->SetFileSpec(rsFilespec);
 394     M_DIR->SetFlags(nFlags);
 395     return GetNext(psFilename);
 396 } // end of wxDir::GetFirst
 397
 398 bool wxDir::GetNext(
 399   wxString*                         psFilename
 400 ) const
 401 {
 402     wxCHECK_MSG( IsOpened(), FALSE, _T("must wxDir::Open() first") );
 403     wxCHECK_MSG( psFilename, FALSE, _T("bad pointer in wxDir::GetNext()") );
 404     return M_DIR->Read(psFilename);
 405 } // end of wxDir::GetNext
 406