src/msw/iniconf.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/iniconf.cpp
   3 // Purpose:     implementation of wxIniConfig class
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     27.07.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "iniconf.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 #ifndef   WX_PRECOMP
  24   #include  <wx/string.h>
  25   #include  <wx/intl.h>
  26   #include  <wx/app.h>
  27 #endif  //WX_PRECOMP
  28
  29 #include  <wx/dynarray.h>
  30 #include  <wx/log.h>
  31 #include  <wx/config.h>
  32
  33 #include  <wx/msw/iniconf.h>
  34
  35 // _WINDOWS_ is defined when windows.h is included,
  36 // __WXMSW__ is defined for MS Windows compilation
  37 #if       defined(__WXMSW__) && !defined(_WINDOWS_)
  38   #include  <windows.h>
  39 #endif  //windows.h
  40
  41 // ----------------------------------------------------------------------------
  42 // constants
  43 // ----------------------------------------------------------------------------
  44
  45 // we replace all path separators with this character
  46 #define PATH_SEP_REPLACE  '_'
  47
  48 // ============================================================================
  49 // implementation
  50 // ============================================================================
  51
  52 // ----------------------------------------------------------------------------
  53 // ctor & dtor
  54 // ----------------------------------------------------------------------------
  55
  56 wxIniConfig::wxIniConfig(const wxString& strAppName, const wxString& strVendor,
  57     const wxString& localFilename, const wxString& globalFilename, long style):
  58      wxConfigBase(strAppName, strVendor, localFilename, globalFilename, style)
  59 {
  60     if ( GetAppName().IsEmpty() )
  61     {
  62         wxString app;
  63         if (wxTheApp)
  64             app = wxTheApp->GetAppName();
  65         wxASSERT( !app.IsEmpty() );
  66         SetAppName(app);
  67     }
  68
  69     // Vendor name is required in wxIniConfig.
  70     // TODO: should it be required? Why isn't appName used instead? -- JACS
  71     if ( GetVendorName().IsEmpty() )
  72     {
  73         wxString vendor;
  74         if (wxTheApp)
  75             vendor = wxTheApp->GetVendorName();
  76         else
  77             vendor = strAppName;
  78         SetVendorName(vendor);
  79     }
  80
  81     m_strLocalFilename = localFilename;
  82     if (m_strLocalFilename.IsEmpty())
  83     {
  84         m_strLocalFilename = GetAppName() + ".ini";
  85     }
  86
  87     // append the extension if none given and it's not an absolute file name
  88     // (otherwise we assume that they know what they're doing)
  89     if ( !wxIsPathSeparator(m_strLocalFilename[0u]) &&
  90         m_strLocalFilename.Find('.') == NOT_FOUND )
  91     {
  92         m_strLocalFilename << ".ini";
  93     }
  94
  95     // set root path
  96     SetPath("");
  97 }
  98
  99 wxIniConfig::~wxIniConfig()
 100 {
 101 }
 102
 103 // ----------------------------------------------------------------------------
 104 // path management
 105 // ----------------------------------------------------------------------------
 106
 107 void wxIniConfig::SetPath(const wxString& strPath)
 108 {
 109   wxArrayString aParts;
 110
 111   if ( strPath.IsEmpty() ) {
 112     // nothing
 113   }
 114   else if ( strPath[0u] == wxCONFIG_PATH_SEPARATOR ) {
 115     // absolute path
 116     wxSplitPath(aParts, strPath);
 117   }
 118   else {
 119     // relative path, combine with current one
 120     wxString strFullPath = GetPath();
 121     strFullPath << wxCONFIG_PATH_SEPARATOR << strPath;
 122     wxSplitPath(aParts, strFullPath);
 123   }
 124
 125   size_t nPartsCount = aParts.Count();
 126   m_strPath.Empty();
 127   if ( nPartsCount == 0 ) {
 128     // go to the root
 129     m_strGroup = PATH_SEP_REPLACE;
 130   }
 131   else {
 132     // translate
 133     m_strGroup = aParts[0u];
 134     for ( size_t nPart = 1; nPart < nPartsCount; nPart++ ) {
 135       if ( nPart > 1 )
 136         m_strPath << PATH_SEP_REPLACE;
 137       m_strPath << aParts[nPart];
 138     }
 139   }
 140
 141   // other functions assume that all this is true, i.e. there are no trailing
 142   // underscores at the end except if the group is the root one
 143   wxASSERT( (m_strPath.IsEmpty() || m_strPath.Last() != PATH_SEP_REPLACE) &&
 144             (m_strGroup == PATH_SEP_REPLACE ||
 145              m_strGroup.Last() != PATH_SEP_REPLACE) );
 146 }
 147
 148 const wxString& wxIniConfig::GetPath() const
 149 {
 150   static wxString s_str;
 151
 152   // always return abs path
 153   s_str = wxCONFIG_PATH_SEPARATOR;
 154
 155   if ( m_strGroup == PATH_SEP_REPLACE ) {
 156     // we're at the root level, nothing to do
 157   }
 158   else {
 159     s_str << m_strGroup;
 160     if ( !m_strPath.IsEmpty() )
 161       s_str << wxCONFIG_PATH_SEPARATOR;
 162     for ( const char *p = m_strPath; *p != '\0'; p++ ) {
 163       s_str << (*p == PATH_SEP_REPLACE ? wxCONFIG_PATH_SEPARATOR : *p);
 164     }
 165   }
 166
 167   return s_str;
 168 }
 169
 170 wxString wxIniConfig::GetPrivateKeyName(const wxString& szKey) const
 171 {
 172   wxString strKey;
 173
 174   if ( !m_strPath.IsEmpty() )
 175     strKey << m_strPath << PATH_SEP_REPLACE;
 176
 177   strKey << szKey;
 178
 179   return strKey;
 180 }
 181
 182 wxString wxIniConfig::GetKeyName(const wxString& szKey) const
 183 {
 184   wxString strKey;
 185
 186   if ( m_strGroup != PATH_SEP_REPLACE )
 187     strKey << m_strGroup << PATH_SEP_REPLACE;
 188   if ( !m_strPath.IsEmpty() )
 189     strKey << m_strPath << PATH_SEP_REPLACE;
 190
 191   strKey << szKey;
 192
 193   return strKey;
 194 }
 195
 196 // ----------------------------------------------------------------------------
 197 // enumeration
 198 // ----------------------------------------------------------------------------
 199
 200 // not implemented
 201 bool wxIniConfig::GetFirstGroup(wxString& str, long& lIndex) const
 202 {
 203   wxFAIL_MSG("not implemented");
 204
 205   return FALSE;
 206 }
 207
 208 bool wxIniConfig::GetNextGroup (wxString& str, long& lIndex) const
 209 {
 210   wxFAIL_MSG("not implemented");
 211
 212   return FALSE;
 213 }
 214
 215 bool wxIniConfig::GetFirstEntry(wxString& str, long& lIndex) const
 216 {
 217   wxFAIL_MSG("not implemented");
 218
 219   return FALSE;
 220 }
 221
 222 bool wxIniConfig::GetNextEntry (wxString& str, long& lIndex) const
 223 {
 224   wxFAIL_MSG("not implemented");
 225
 226   return FALSE;
 227 }
 228
 229 // ----------------------------------------------------------------------------
 230 // misc info
 231 // ----------------------------------------------------------------------------
 232
 233 // not implemented
 234 size_t wxIniConfig::GetNumberOfEntries(bool bRecursive) const
 235 {
 236   wxFAIL_MSG("not implemented");
 237
 238   return (size_t)-1;
 239 }
 240
 241 size_t wxIniConfig::GetNumberOfGroups(bool bRecursive) const
 242 {
 243   wxFAIL_MSG("not implemented");
 244
 245   return (size_t)-1;
 246 }
 247
 248 bool wxIniConfig::HasGroup(const wxString& strName) const
 249 {
 250   wxFAIL_MSG("not implemented");
 251
 252   return FALSE;
 253 }
 254
 255 bool wxIniConfig::HasEntry(const wxString& strName) const
 256 {
 257   wxFAIL_MSG("not implemented");
 258
 259   return FALSE;
 260 }
 261
 262 // is current group empty?
 263 bool wxIniConfig::IsEmpty() const
 264 {
 265   char szBuf[1024];
 266
 267   GetPrivateProfileString(m_strGroup, NULL, "",
 268                           szBuf, WXSIZEOF(szBuf), m_strLocalFilename);
 269   if ( !::IsEmpty(szBuf) )
 270     return FALSE;
 271
 272   GetProfileString(m_strGroup, NULL, "", szBuf, WXSIZEOF(szBuf));
 273   if ( !::IsEmpty(szBuf) )
 274     return FALSE;
 275
 276   return TRUE;
 277 }
 278
 279 // ----------------------------------------------------------------------------
 280 // read/write
 281 // ----------------------------------------------------------------------------
 282
 283 bool wxIniConfig::Read(const wxString& szKey, wxString *pstr) const
 284 {
 285   wxConfigPathChanger path(this, szKey);
 286   wxString strKey = GetPrivateKeyName(path.Name());
 287
 288   char szBuf[1024]; // @@ should dynamically allocate memory...
 289
 290   // first look in the private INI file
 291
 292   // NB: the lpDefault param to GetPrivateProfileString can't be NULL
 293   GetPrivateProfileString(m_strGroup, strKey, "",
 294                           szBuf, WXSIZEOF(szBuf), m_strLocalFilename);
 295   if ( ::IsEmpty(szBuf) ) {
 296     // now look in win.ini
 297     wxString strKey = GetKeyName(path.Name());
 298     GetProfileString(m_strGroup, strKey, "", szBuf, WXSIZEOF(szBuf));
 299   }
 300
 301   if ( ::IsEmpty(szBuf) ) {
 302     return FALSE;
 303   }
 304   else {
 305     return TRUE;
 306   }
 307 }
 308
 309 bool wxIniConfig::Read(const wxString& szKey, wxString *pstr,
 310                        const wxString& szDefault) const
 311 {
 312   wxConfigPathChanger path(this, szKey);
 313   wxString strKey = GetPrivateKeyName(path.Name());
 314
 315   char szBuf[1024]; // @@ should dynamically allocate memory...
 316
 317   // first look in the private INI file
 318
 319   // NB: the lpDefault param to GetPrivateProfileString can't be NULL
 320   GetPrivateProfileString(m_strGroup, strKey, "",
 321                           szBuf, WXSIZEOF(szBuf), m_strLocalFilename);
 322   if ( ::IsEmpty(szBuf) ) {
 323     // now look in win.ini
 324     wxString strKey = GetKeyName(path.Name());
 325     GetProfileString(m_strGroup, strKey, "", szBuf, WXSIZEOF(szBuf));
 326   }
 327
 328   if ( ::IsEmpty(szBuf) ) {
 329     *pstr = szDefault;
 330     return FALSE;
 331   }
 332   else {
 333     return TRUE;
 334   }
 335 }
 336
 337 bool wxIniConfig::Read(const wxString& szKey, long *pl) const
 338 {
 339   wxConfigPathChanger path(this, szKey);
 340   wxString strKey = GetPrivateKeyName(path.Name());
 341
 342   // hack: we have no mean to know if it really found the default value or
 343   // didn't find anything, so we call it twice
 344
 345   static const int nMagic  = 17; // 17 is some "rare" number
 346   static const int nMagic2 = 28; // arbitrary number != nMagic
 347   long lVal = GetPrivateProfileInt(m_strGroup, strKey, nMagic, m_strLocalFilename);
 348   if ( lVal != nMagic ) {
 349     // the value was read from the file
 350     *pl = lVal;
 351     return TRUE;
 352   }
 353
 354   // is it really nMagic?
 355   lVal = GetPrivateProfileInt(m_strGroup, strKey, nMagic2, m_strLocalFilename);
 356   if ( lVal == nMagic ) {
 357     // the nMagic it returned was indeed read from the file
 358     *pl = lVal;
 359     return TRUE;
 360   }
 361
 362   // no, it was just returning the default value, so now look in win.ini
 363   *pl = GetProfileInt(GetVendorName(), GetKeyName(szKey), *pl);
 364
 365   return TRUE;
 366 }
 367
 368 bool wxIniConfig::Write(const wxString& szKey, const wxString& szValue)
 369 {
 370   wxConfigPathChanger path(this, szKey);
 371   wxString strKey = GetPrivateKeyName(path.Name());
 372
 373   bool bOk = WritePrivateProfileString(m_strGroup, strKey,
 374                                        szValue, m_strLocalFilename) != 0;
 375
 376   if ( !bOk )
 377     wxLogLastError("WritePrivateProfileString");
 378
 379   return bOk;
 380 }
 381
 382 bool wxIniConfig::Write(const wxString& szKey, long lValue)
 383 {
 384   // ltoa() is not ANSI :-(
 385   char szBuf[40];   // should be good for sizeof(long) <= 16 (128 bits)
 386   sprintf(szBuf, "%ld", lValue);
 387
 388   return Write(szKey, szBuf);
 389 }
 390
 391 bool wxIniConfig::Flush(bool /* bCurrentOnly */)
 392 {
 393   // this is just the way it works
 394   return WritePrivateProfileString(NULL, NULL, NULL, m_strLocalFilename) != 0;
 395 }
 396
 397 // ----------------------------------------------------------------------------
 398 // delete
 399 // ----------------------------------------------------------------------------
 400
 401 bool wxIniConfig::DeleteEntry(const wxString& szKey, bool bGroupIfEmptyAlso)
 402 {
 403   // passing NULL as value to WritePrivateProfileString deletes the key
 404   if ( !Write(szKey, (const char *)NULL) )
 405     return FALSE;
 406
 407   if ( !bGroupIfEmptyAlso || !IsEmpty() )
 408     return TRUE;
 409
 410   // delete the current group too
 411   bool bOk = WritePrivateProfileString(m_strGroup, NULL,
 412                                        NULL, m_strLocalFilename) != 0;
 413
 414   if ( !bOk )
 415     wxLogLastError("WritePrivateProfileString");
 416
 417   return bOk;
 418 }
 419
 420 bool wxIniConfig::DeleteGroup(const wxString& szKey)
 421 {
 422   wxConfigPathChanger path(this, szKey);
 423
 424   // passing NULL as section name to WritePrivateProfileString deletes the
 425   // whole section according to the docs
 426   bool bOk = WritePrivateProfileString(path.Name(), NULL,
 427                                        NULL, m_strLocalFilename) != 0;
 428
 429   if ( !bOk )
 430     wxLogLastError("WritePrivateProfileString");
 431
 432   return bOk;
 433 }
 434
 435 #ifndef MAX_PATH
 436 #define MAX_PATH 256
 437 #endif
 438
 439 bool wxIniConfig::DeleteAll()
 440 {
 441   // first delete our group in win.ini
 442   WriteProfileString(GetVendorName(), NULL, NULL);
 443
 444   // then delete our own ini file
 445   char szBuf[MAX_PATH];
 446   size_t nRc = GetWindowsDirectory(szBuf, WXSIZEOF(szBuf));
 447   if ( nRc == 0 )
 448     wxLogLastError("GetWindowsDirectory");
 449   else if ( nRc > WXSIZEOF(szBuf) )
 450     wxFAIL_MSG("buffer is too small for Windows directory.");
 451
 452   wxString strFile = szBuf;
 453   strFile << '\\' << m_strLocalFilename;
 454
 455   if ( !wxRemoveFile(strFile) ) {
 456     wxLogSysError(_("Can't delete the INI file '%s'"), strFile.c_str());
 457     return FALSE;
 458   }
 459
 460   return TRUE;
 461 }