src/common/fileconf.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        fileconf.cpp
   3 // Purpose:     implementation of wxFileConfig derivation of wxConfig
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     07.04.98 (adapted from appconf.cpp)
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997 Karsten Ballüder   &  Vadim Zeitlin
   9 //                       Ballueder@usa.net     <zeitlin@dptmaths.ens-cachan.fr>
  10 // Licence:     wxWindows license
  11 ///////////////////////////////////////////////////////////////////////////////
  12
  13 #ifdef __GNUG__
  14 #pragma implementation "fileconf.h"
  15 #endif
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #include  "wx/wxprec.h"
  22
  23 #ifdef    __BORLANDC__
  24   #pragma hdrstop
  25 #endif  //__BORLANDC__
  26
  27 #if wxUSE_CONFIG
  28
  29 #ifndef   WX_PRECOMP
  30   #include  "wx/string.h"
  31   #include  "wx/intl.h"
  32 #endif  //WX_PRECOMP
  33
  34 #include  "wx/app.h"
  35 #include  "wx/dynarray.h"
  36 #include  "wx/file.h"
  37 #include  "wx/log.h"
  38 #include  "wx/textfile.h"
  39 #include  "wx/memtext.h"
  40 #include  "wx/config.h"
  41 #include  "wx/fileconf.h"
  42
  43 #if wxUSE_STREAMS
  44     #include  "wx/stream.h"
  45 #endif // wxUSE_STREAMS
  46
  47 #include  "wx/utils.h"    // for wxGetHomeDir
  48
  49 // _WINDOWS_ is defined when windows.h is included,
  50 // __WXMSW__ is defined for MS Windows compilation
  51 #if       defined(__WXMSW__) && !defined(_WINDOWS_)
  52   #include  <windows.h>
  53 #endif  //windows.h
  54 #if defined(__WXPM__)
  55   #define INCL_DOS
  56   #include <os2.h>
  57 #endif
  58
  59 #include  <stdlib.h>
  60 #include  <ctype.h>
  61
  62 // headers needed for umask()
  63 #ifdef __UNIX__
  64     #include <sys/types.h>
  65     #include <sys/stat.h>
  66 #endif // __UNIX__
  67
  68 // ----------------------------------------------------------------------------
  69 // macros
  70 // ----------------------------------------------------------------------------
  71 #define CONST_CAST ((wxFileConfig *)this)->
  72
  73 // ----------------------------------------------------------------------------
  74 // constants
  75 // ----------------------------------------------------------------------------
  76
  77 #ifndef MAX_PATH
  78   #define MAX_PATH 512
  79 #endif
  80
  81 // ----------------------------------------------------------------------------
  82 // global functions declarations
  83 // ----------------------------------------------------------------------------
  84
  85 // compare functions for sorting the arrays
  86 static int LINKAGEMODE CompareEntries(wxFileConfigEntry *p1, wxFileConfigEntry *p2);
  87 static int LINKAGEMODE CompareGroups(wxFileConfigGroup *p1, wxFileConfigGroup *p2);
  88
  89 // filter strings
  90 static wxString FilterInValue(const wxString& str);
  91 static wxString FilterOutValue(const wxString& str);
  92
  93 static wxString FilterInEntryName(const wxString& str);
  94 static wxString FilterOutEntryName(const wxString& str);
  95
  96 // get the name to use in wxFileConfig ctor
  97 static wxString GetAppName(const wxString& appname);
  98
  99 // ============================================================================
 100 // private classes
 101 // ============================================================================
 102
 103 // ----------------------------------------------------------------------------
 104 // "template" array types
 105 // ----------------------------------------------------------------------------
 106
 107 WX_DEFINE_SORTED_EXPORTED_ARRAY(wxFileConfigEntry *, ArrayEntries);
 108 WX_DEFINE_SORTED_EXPORTED_ARRAY(wxFileConfigGroup *, ArrayGroups);
 109
 110 // ----------------------------------------------------------------------------
 111 // wxFileConfigLineList
 112 // ----------------------------------------------------------------------------
 113
 114 // we store all lines of the local config file as a linked list in memory
 115 class wxFileConfigLineList
 116 {
 117 public:
 118   void SetNext(wxFileConfigLineList *pNext)  { m_pNext = pNext; }
 119   void SetPrev(wxFileConfigLineList *pPrev)  { m_pPrev = pPrev; }
 120
 121   // ctor
 122   wxFileConfigLineList(const wxString& str,
 123                        wxFileConfigLineList *pNext = NULL) : m_strLine(str)
 124     { SetNext(pNext); SetPrev(NULL); }
 125
 126   // next/prev nodes in the linked list
 127   wxFileConfigLineList *Next() const { return m_pNext;  }
 128   wxFileConfigLineList *Prev() const { return m_pPrev;  }
 129
 130   // get/change lines text
 131   void SetText(const wxString& str) { m_strLine = str;  }
 132   const wxString& Text() const { return m_strLine; }
 133
 134 private:
 135   wxString  m_strLine;                  // line contents
 136   wxFileConfigLineList *m_pNext,        // next node
 137                        *m_pPrev;        // previous one
 138 };
 139
 140 // ----------------------------------------------------------------------------
 141 // wxFileConfigEntry: a name/value pair
 142 // ----------------------------------------------------------------------------
 143
 144 class wxFileConfigEntry
 145 {
 146 private:
 147   wxFileConfigGroup *m_pParent; // group that contains us
 148
 149   wxString      m_strName,      // entry name
 150                 m_strValue;     //       value
 151   bool          m_bDirty:1,     // changed since last read?
 152                 m_bImmutable:1, // can be overriden locally?
 153                 m_bHasValue:1;  // set after first call to SetValue()
 154
 155   int           m_nLine;        // used if m_pLine == NULL only
 156
 157   // pointer to our line in the linked list or NULL if it was found in global
 158   // file (which we don't modify)
 159   wxFileConfigLineList *m_pLine;
 160
 161 public:
 162   wxFileConfigEntry(wxFileConfigGroup *pParent,
 163                     const wxString& strName, int nLine);
 164
 165   // simple accessors
 166   const wxString& Name()        const { return m_strName;    }
 167   const wxString& Value()       const { return m_strValue;   }
 168   wxFileConfigGroup *Group()    const { return m_pParent;    }
 169   bool            IsDirty()     const { return m_bDirty;     }
 170   bool            IsImmutable() const { return m_bImmutable; }
 171   bool            IsLocal()     const { return m_pLine != 0; }
 172   int             Line()        const { return m_nLine;      }
 173   wxFileConfigLineList *
 174                   GetLine()     const { return m_pLine;      }
 175
 176   // modify entry attributes
 177   void SetValue(const wxString& strValue, bool bUser = TRUE);
 178   void SetDirty();
 179   void SetLine(wxFileConfigLineList *pLine);
 180 };
 181
 182 // ----------------------------------------------------------------------------
 183 // wxFileConfigGroup: container of entries and other groups
 184 // ----------------------------------------------------------------------------
 185
 186 class wxFileConfigGroup
 187 {
 188 private:
 189   wxFileConfig *m_pConfig;          // config object we belong to
 190   wxFileConfigGroup  *m_pParent;    // parent group (NULL for root group)
 191   ArrayEntries  m_aEntries;         // entries in this group
 192   ArrayGroups   m_aSubgroups;       // subgroups
 193   wxString      m_strName;          // group's name
 194   bool          m_bDirty;           // if FALSE => all subgroups are not dirty
 195   wxFileConfigLineList *m_pLine;    // pointer to our line in the linked list
 196   wxFileConfigEntry *m_pLastEntry;  // last entry/subgroup of this group in the
 197   wxFileConfigGroup *m_pLastGroup;  // local file (we insert new ones after it)
 198
 199   // DeleteSubgroupByName helper
 200   bool DeleteSubgroup(wxFileConfigGroup *pGroup);
 201
 202 public:
 203   // ctor
 204   wxFileConfigGroup(wxFileConfigGroup *pParent, const wxString& strName, wxFileConfig *);
 205
 206   // dtor deletes all entries and subgroups also
 207   ~wxFileConfigGroup();
 208
 209   // simple accessors
 210   const wxString& Name()    const { return m_strName; }
 211   wxFileConfigGroup    *Parent()  const { return m_pParent; }
 212   wxFileConfig   *Config()  const { return m_pConfig; }
 213   bool            IsDirty() const { return m_bDirty;  }
 214
 215   const ArrayEntries& Entries() const { return m_aEntries;   }
 216   const ArrayGroups&  Groups()  const { return m_aSubgroups; }
 217   bool  IsEmpty() const { return Entries().IsEmpty() && Groups().IsEmpty(); }
 218
 219   // find entry/subgroup (NULL if not found)
 220   wxFileConfigGroup *FindSubgroup(const wxChar *szName) const;
 221   wxFileConfigEntry *FindEntry   (const wxChar *szName) const;
 222
 223   // delete entry/subgroup, return FALSE if doesn't exist
 224   bool DeleteSubgroupByName(const wxChar *szName);
 225   bool DeleteEntry(const wxChar *szName);
 226
 227   // create new entry/subgroup returning pointer to newly created element
 228   wxFileConfigGroup *AddSubgroup(const wxString& strName);
 229   wxFileConfigEntry *AddEntry   (const wxString& strName, int nLine = wxNOT_FOUND);
 230
 231   // will also recursively set parent's dirty flag
 232   void SetDirty();
 233   void SetLine(wxFileConfigLineList *pLine);
 234
 235   // rename: no checks are done to ensure that the name is unique!
 236   void Rename(const wxString& newName);
 237
 238   //
 239   wxString GetFullName() const;
 240
 241   // get the last line belonging to an entry/subgroup of this group
 242   wxFileConfigLineList *GetGroupLine();     // line which contains [group]
 243   wxFileConfigLineList *GetLastEntryLine(); // after which our subgroups start
 244   wxFileConfigLineList *GetLastGroupLine(); // after which the next group starts
 245
 246   // called by entries/subgroups when they're created/deleted
 247   void SetLastEntry(wxFileConfigEntry *pEntry) { m_pLastEntry = pEntry; }
 248   void SetLastGroup(wxFileConfigGroup *pGroup) { m_pLastGroup = pGroup; }
 249 };
 250
 251 // ============================================================================
 252 // implementation
 253 // ============================================================================
 254
 255 // ----------------------------------------------------------------------------
 256 // static functions
 257 // ----------------------------------------------------------------------------
 258 wxString wxFileConfig::GetGlobalDir()
 259 {
 260   wxString strDir;
 261
 262   #ifdef __VMS__ // Note if __VMS is defined __UNIX is also defined
 263     strDir = wxT("sys$manager:");
 264   #elif defined(__WXMAC__)
 265     strDir = wxMacFindFolder(  (short) kOnSystemDisk, kPreferencesFolderType, kDontCreateFolder ) ;
 266   #elif defined( __UNIX__ )
 267     strDir = wxT("/etc/");
 268   #elif defined(__WXPM__)
 269     ULONG                           aulSysInfo[QSV_MAX] = {0};
 270     UINT                            drive;
 271     APIRET                          rc;
 272
 273     rc = DosQuerySysInfo( 1L, QSV_MAX, (PVOID)aulSysInfo, sizeof(ULONG)*QSV_MAX);
 274     if (rc == 0)
 275     {
 276         drive = aulSysInfo[QSV_BOOT_DRIVE - 1];
 277         switch(drive)
 278         {
 279            case 1:
 280               strDir = "A:\\OS2\\";
 281               break;
 282            case 2:
 283               strDir = "B:\\OS2\\";
 284               break;
 285            case 3:
 286               strDir = "C:\\OS2\\";
 287               break;
 288            case 4:
 289               strDir = "D:\\OS2\\";
 290               break;
 291            case 5:
 292               strDir = "E:\\OS2\\";
 293               break;
 294            case 6:
 295               strDir = "F:\\OS2\\";
 296               break;
 297            case 7:
 298               strDir = "G:\\OS2\\";
 299               break;
 300            case 8:
 301               strDir = "H:\\OS2\\";
 302               break;
 303            case 9:
 304               strDir = "I:\\OS2\\";
 305               break;
 306            case 10:
 307               strDir = "J:\\OS2\\";
 308               break;
 309            case 11:
 310               strDir = "K:\\OS2\\";
 311               break;
 312            case 12:
 313               strDir = "L:\\OS2\\";
 314               break;
 315            case 13:
 316               strDir = "M:\\OS2\\";
 317               break;
 318            case 14:
 319               strDir = "N:\\OS2\\";
 320               break;
 321            case 15:
 322               strDir = "O:\\OS2\\";
 323               break;
 324            case 16:
 325               strDir = "P:\\OS2\\";
 326               break;
 327            case 17:
 328               strDir = "Q:\\OS2\\";
 329               break;
 330            case 18:
 331               strDir = "R:\\OS2\\";
 332               break;
 333            case 19:
 334               strDir = "S:\\OS2\\";
 335               break;
 336            case 20:
 337               strDir = "T:\\OS2\\";
 338               break;
 339            case 21:
 340               strDir = "U:\\OS2\\";
 341               break;
 342            case 22:
 343               strDir = "V:\\OS2\\";
 344               break;
 345            case 23:
 346               strDir = "W:\\OS2\\";
 347               break;
 348            case 24:
 349               strDir = "X:\\OS2\\";
 350               break;
 351            case 25:
 352               strDir = "Y:\\OS2\\";
 353               break;
 354            case 26:
 355               strDir = "Z:\\OS2\\";
 356               break;
 357         }
 358     }
 359   #elif defined(__WXSTUBS__)
 360     wxASSERT_MSG( FALSE, wxT("TODO") ) ;
 361   #else // Windows
 362     wxChar szWinDir[MAX_PATH];
 363     ::GetWindowsDirectory(szWinDir, MAX_PATH);
 364
 365     strDir = szWinDir;
 366     strDir << wxT('\\');
 367   #endif // Unix/Windows
 368
 369   return strDir;
 370 }
 371
 372 wxString wxFileConfig::GetLocalDir()
 373 {
 374   wxString strDir;
 375
 376 #if defined(__WXMAC__)
 377   // no local dir concept on Mac OS 9
 378   return GetGlobalDir() ;
 379 #else
 380   wxGetHomeDir(&strDir);
 381
 382 #  ifdef  __UNIX__
 383 #  ifdef __VMS
 384   if (strDir.Last() != wxT(']'))
 385 #  endif
 386       if (strDir.Last() != wxT('/')) strDir << wxT('/');
 387 #  else
 388   if (strDir.Last() != wxT('\\')) strDir << wxT('\\');
 389 #  endif
 390 #endif
 391
 392   return strDir;
 393 }
 394
 395 wxString wxFileConfig::GetGlobalFileName(const wxChar *szFile)
 396 {
 397   wxString str = GetGlobalDir();
 398   str << szFile;
 399
 400   if ( wxStrchr(szFile, wxT('.')) == NULL )
 401   #if defined( __WXMAC__ )
 402      str << " Preferences";
 403   #elif defined( __UNIX__ )
 404     str << wxT(".conf");
 405   #else   // Windows
 406     str << wxT(".ini");
 407   #endif  // UNIX/Win
 408
 409   return str;
 410 }
 411
 412 wxString wxFileConfig::GetLocalFileName(const wxChar *szFile)
 413 {
 414 #ifdef __VMS__ // On VMS I saw the problem that the home directory was appended
 415    // twice for the configuration file. Does that also happen for other
 416    // platforms?
 417    wxString str = wxT( '.' );
 418 #else
 419    wxString str = GetLocalDir();
 420 #endif
 421
 422   #if defined( __UNIX__ ) && !defined( __VMS ) && !defined( __WXMAC__ )
 423     str << wxT('.');
 424   #endif
 425
 426   str << szFile;
 427
 428   #ifdef __WXMSW__
 429     if ( wxStrchr(szFile, wxT('.')) == NULL )
 430       str << wxT(".ini");
 431   #endif
 432
 433   #ifdef __WXMAC__
 434      str << " Preferences";
 435   #endif
 436   return str;
 437 }
 438
 439 // ----------------------------------------------------------------------------
 440 // ctor
 441 // ----------------------------------------------------------------------------
 442
 443 void wxFileConfig::Init()
 444 {
 445   m_pCurrentGroup =
 446   m_pRootGroup    = new wxFileConfigGroup(NULL, "", this);
 447
 448   m_linesHead =
 449   m_linesTail = NULL;
 450
 451   // it's not an error if (one of the) file(s) doesn't exist
 452
 453   // parse the global file
 454   if ( !m_strGlobalFile.IsEmpty() && wxFile::Exists(m_strGlobalFile) ) {
 455     wxTextFile fileGlobal(m_strGlobalFile);
 456
 457     if ( fileGlobal.Open() ) {
 458       Parse(fileGlobal, FALSE /* global */);
 459       SetRootPath();
 460     }
 461     else
 462       wxLogWarning(_("can't open global configuration file '%s'."),
 463                    m_strGlobalFile.c_str());
 464   }
 465
 466   // parse the local file
 467   if ( !m_strLocalFile.IsEmpty() && wxFile::Exists(m_strLocalFile) ) {
 468     wxTextFile fileLocal(m_strLocalFile);
 469     if ( fileLocal.Open() ) {
 470       Parse(fileLocal, TRUE /* local */);
 471       SetRootPath();
 472     }
 473     else
 474       wxLogWarning(_("can't open user configuration file '%s'."),
 475                    m_strLocalFile.c_str());
 476   }
 477 }
 478
 479 // constructor supports creation of wxFileConfig objects of any type
 480 wxFileConfig::wxFileConfig(const wxString& appName, const wxString& vendorName,
 481                            const wxString& strLocal, const wxString& strGlobal,
 482                            long style)
 483             : wxConfigBase(::GetAppName(appName), vendorName,
 484                            strLocal, strGlobal,
 485                            style),
 486               m_strLocalFile(strLocal), m_strGlobalFile(strGlobal)
 487 {
 488   // Make up names for files if empty
 489   if ( m_strLocalFile.IsEmpty() && (style & wxCONFIG_USE_LOCAL_FILE) )
 490   {
 491     m_strLocalFile = GetLocalFileName(GetAppName());
 492   }
 493
 494   if ( m_strGlobalFile.IsEmpty() && (style & wxCONFIG_USE_GLOBAL_FILE) )
 495   {
 496     m_strGlobalFile = GetGlobalFileName(GetAppName());
 497   }
 498
 499   // Check if styles are not supplied, but filenames are, in which case
 500   // add the correct styles.
 501   if ( !m_strLocalFile.IsEmpty() )
 502     SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
 503
 504   if ( !m_strGlobalFile.IsEmpty() )
 505     SetStyle(GetStyle() | wxCONFIG_USE_GLOBAL_FILE);
 506
 507   // if the path is not absolute, prepend the standard directory to it
 508   // UNLESS wxCONFIG_USE_RELATIVE_PATH style is set
 509   if ( !(style & wxCONFIG_USE_RELATIVE_PATH) )
 510   {
 511       if ( !m_strLocalFile.IsEmpty() && !wxIsAbsolutePath(m_strLocalFile) )
 512       {
 513           wxString strLocal = m_strLocalFile;
 514           m_strLocalFile = GetLocalDir();
 515           m_strLocalFile << strLocal;
 516       }
 517
 518       if ( !m_strGlobalFile.IsEmpty() && !wxIsAbsolutePath(m_strGlobalFile) )
 519       {
 520           wxString strGlobal = m_strGlobalFile;
 521           m_strGlobalFile = GetGlobalDir();
 522           m_strGlobalFile << strGlobal;
 523       }
 524   }
 525
 526   SetUmask(-1);
 527
 528   Init();
 529 }
 530
 531 #if wxUSE_STREAMS
 532
 533 wxFileConfig::wxFileConfig(wxInputStream &inStream)
 534 {
 535     // always local_file when this constructor is called (?)
 536     SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
 537
 538     m_pCurrentGroup =
 539     m_pRootGroup    = new wxFileConfigGroup(NULL, "", this);
 540
 541     m_linesHead =
 542     m_linesTail = NULL;
 543
 544     // translate everything to the current (platform-dependent) line
 545     // termination character
 546     wxString strTrans;
 547     {
 548         wxString strTmp;
 549
 550         char buf[1024];
 551         while ( !inStream.Read(buf, WXSIZEOF(buf)).Eof() )
 552             strTmp += wxString(buf, inStream.LastRead());
 553
 554         strTmp += wxString(buf, inStream.LastRead());
 555
 556         strTrans = wxTextBuffer::Translate(strTmp);
 557     }
 558
 559     wxMemoryText memText;
 560
 561     // Now we can add the text to the memory text. To do this we extract line
 562     // by line from the translated string, until we've reached the end.
 563     //
 564     // VZ: all this is horribly inefficient, we should do the translation on
 565     //     the fly in one pass saving both memory and time (TODO)
 566
 567     const wxChar *pEOL = wxTextBuffer::GetEOL(wxTextBuffer::typeDefault);
 568     const size_t EOLLen = wxStrlen(pEOL);
 569
 570     int posLineStart = strTrans.Find(pEOL);
 571     while ( posLineStart != -1 )
 572     {
 573         wxString line(strTrans.Left(posLineStart));
 574
 575         memText.AddLine(line);
 576
 577         strTrans = strTrans.Mid(posLineStart + EOLLen);
 578
 579         posLineStart = strTrans.Find(pEOL);
 580     }
 581
 582     // also add whatever we have left in the translated string.
 583     memText.AddLine(strTrans);
 584
 585     // Finally we can parse it all.
 586     Parse(memText, TRUE /* local */);
 587
 588     SetRootPath();
 589 }
 590
 591 #endif // wxUSE_STREAMS
 592
 593 void wxFileConfig::CleanUp()
 594 {
 595   delete m_pRootGroup;
 596
 597   wxFileConfigLineList *pCur = m_linesHead;
 598   while ( pCur != NULL ) {
 599     wxFileConfigLineList *pNext = pCur->Next();
 600     delete pCur;
 601     pCur = pNext;
 602   }
 603 }
 604
 605 wxFileConfig::~wxFileConfig()
 606 {
 607   Flush();
 608
 609   CleanUp();
 610 }
 611
 612 // ----------------------------------------------------------------------------
 613 // parse a config file
 614 // ----------------------------------------------------------------------------
 615
 616 void wxFileConfig::Parse(wxTextBuffer& buffer, bool bLocal)
 617 {
 618   const wxChar *pStart;
 619   const wxChar *pEnd;
 620   wxString strLine;
 621
 622   size_t nLineCount = buffer.GetLineCount();
 623   for ( size_t n = 0; n < nLineCount; n++ ) {
 624     strLine = buffer[n];
 625
 626     // add the line to linked list
 627     if ( bLocal )
 628       LineListAppend(strLine);
 629
 630     // skip leading spaces
 631     for ( pStart = strLine; wxIsspace(*pStart); pStart++ )
 632       ;
 633
 634     // skip blank/comment lines
 635     if ( *pStart == wxT('\0')|| *pStart == wxT(';') || *pStart == wxT('#') )
 636       continue;
 637
 638     if ( *pStart == wxT('[') ) {          // a new group
 639       pEnd = pStart;
 640
 641       while ( *++pEnd != wxT(']') ) {
 642         if ( *pEnd == wxT('\\') ) {
 643             // the next char is escaped, so skip it even if it is ']'
 644             pEnd++;
 645         }
 646
 647         if ( *pEnd == wxT('\n') || *pEnd == wxT('\0') ) {
 648             // we reached the end of line, break out of the loop
 649             break;
 650         }
 651       }
 652
 653       if ( *pEnd != wxT(']') ) {
 654         wxLogError(_("file '%s': unexpected character %c at line %d."),
 655                    buffer.GetName(), *pEnd, n + 1);
 656         continue; // skip this line
 657       }
 658
 659       // group name here is always considered as abs path
 660       wxString strGroup;
 661       pStart++;
 662       strGroup << wxCONFIG_PATH_SEPARATOR
 663                << FilterInEntryName(wxString(pStart, pEnd - pStart));
 664
 665       // will create it if doesn't yet exist
 666       SetPath(strGroup);
 667
 668       if ( bLocal )
 669         m_pCurrentGroup->SetLine(m_linesTail);
 670
 671       // check that there is nothing except comments left on this line
 672       bool bCont = TRUE;
 673       while ( *++pEnd != wxT('\0') && bCont ) {
 674         switch ( *pEnd ) {
 675           case wxT('#'):
 676           case wxT(';'):
 677             bCont = FALSE;
 678             break;
 679
 680           case wxT(' '):
 681           case wxT('\t'):
 682             // ignore whitespace ('\n' impossible here)
 683             break;
 684
 685           default:
 686             wxLogWarning(_("file '%s', line %d: '%s' ignored after group header."),
 687                          buffer.GetName(), n + 1, pEnd);
 688             bCont = FALSE;
 689         }
 690       }
 691     }
 692     else {                        // a key
 693       const wxChar *pEnd = pStart;
 694       while ( *pEnd && *pEnd != wxT('=') && !wxIsspace(*pEnd) ) {
 695         if ( *pEnd == wxT('\\') ) {
 696           // next character may be space or not - still take it because it's
 697           // quoted (unless there is nothing)
 698           pEnd++;
 699           if ( !*pEnd ) {
 700             // the error message will be given below anyhow
 701             break;
 702           }
 703         }
 704
 705         pEnd++;
 706       }
 707
 708       wxString strKey(FilterInEntryName(wxString(pStart, pEnd)));
 709
 710       // skip whitespace
 711       while ( wxIsspace(*pEnd) )
 712         pEnd++;
 713
 714       if ( *pEnd++ != wxT('=') ) {
 715         wxLogError(_("file '%s', line %d: '=' expected."),
 716                    buffer.GetName(), n + 1);
 717       }
 718       else {
 719         wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strKey);
 720
 721         if ( pEntry == NULL ) {
 722           // new entry
 723           pEntry = m_pCurrentGroup->AddEntry(strKey, n);
 724
 725           if ( bLocal )
 726             pEntry->SetLine(m_linesTail);
 727         }
 728         else {
 729           if ( bLocal && pEntry->IsImmutable() ) {
 730             // immutable keys can't be changed by user
 731             wxLogWarning(_("file '%s', line %d: value for immutable key '%s' ignored."),
 732                          buffer.GetName(), n + 1, strKey.c_str());
 733             continue;
 734           }
 735           // the condition below catches the cases (a) and (b) but not (c):
 736           //  (a) global key found second time in global file
 737           //  (b) key found second (or more) time in local file
 738           //  (c) key from global file now found in local one
 739           // which is exactly what we want.
 740           else if ( !bLocal || pEntry->IsLocal() ) {
 741             wxLogWarning(_("file '%s', line %d: key '%s' was first found at line %d."),
 742                          buffer.GetName(), n + 1, strKey.c_str(), pEntry->Line());
 743
 744             if ( bLocal )
 745               pEntry->SetLine(m_linesTail);
 746           }
 747         }
 748
 749         // skip whitespace
 750         while ( wxIsspace(*pEnd) )
 751           pEnd++;
 752
 753         pEntry->SetValue(FilterInValue(pEnd), FALSE /* read from file */);
 754       }
 755     }
 756   }
 757 }
 758
 759 // ----------------------------------------------------------------------------
 760 // set/retrieve path
 761 // ----------------------------------------------------------------------------
 762
 763 void wxFileConfig::SetRootPath()
 764 {
 765   m_strPath.Empty();
 766   m_pCurrentGroup = m_pRootGroup;
 767 }
 768
 769 void wxFileConfig::SetPath(const wxString& strPath)
 770 {
 771   wxArrayString aParts;
 772
 773   if ( strPath.IsEmpty() ) {
 774     SetRootPath();
 775     return;
 776   }
 777
 778   if ( strPath[0] == wxCONFIG_PATH_SEPARATOR ) {
 779     // absolute path
 780     wxSplitPath(aParts, strPath);
 781   }
 782   else {
 783     // relative path, combine with current one
 784     wxString strFullPath = m_strPath;
 785     strFullPath << wxCONFIG_PATH_SEPARATOR << strPath;
 786     wxSplitPath(aParts, strFullPath);
 787   }
 788
 789   // change current group
 790   size_t n;
 791   m_pCurrentGroup = m_pRootGroup;
 792   for ( n = 0; n < aParts.Count(); n++ ) {
 793     wxFileConfigGroup *pNextGroup = m_pCurrentGroup->FindSubgroup(aParts[n]);
 794     if ( pNextGroup == NULL )
 795       pNextGroup = m_pCurrentGroup->AddSubgroup(aParts[n]);
 796     m_pCurrentGroup = pNextGroup;
 797   }
 798
 799   // recombine path parts in one variable
 800   m_strPath.Empty();
 801   for ( n = 0; n < aParts.Count(); n++ ) {
 802     m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n];
 803   }
 804 }
 805
 806 // ----------------------------------------------------------------------------
 807 // enumeration
 808 // ----------------------------------------------------------------------------
 809
 810 bool wxFileConfig::GetFirstGroup(wxString& str, long& lIndex) const
 811 {
 812   lIndex = 0;
 813   return GetNextGroup(str, lIndex);
 814 }
 815
 816 bool wxFileConfig::GetNextGroup (wxString& str, long& lIndex) const
 817 {
 818   if ( size_t(lIndex) < m_pCurrentGroup->Groups().Count() ) {
 819     str = m_pCurrentGroup->Groups()[(size_t)lIndex++]->Name();
 820     return TRUE;
 821   }
 822   else
 823     return FALSE;
 824 }
 825
 826 bool wxFileConfig::GetFirstEntry(wxString& str, long& lIndex) const
 827 {
 828   lIndex = 0;
 829   return GetNextEntry(str, lIndex);
 830 }
 831
 832 bool wxFileConfig::GetNextEntry (wxString& str, long& lIndex) const
 833 {
 834   if ( size_t(lIndex) < m_pCurrentGroup->Entries().Count() ) {
 835     str = m_pCurrentGroup->Entries()[(size_t)lIndex++]->Name();
 836     return TRUE;
 837   }
 838   else
 839     return FALSE;
 840 }
 841
 842 size_t wxFileConfig::GetNumberOfEntries(bool bRecursive) const
 843 {
 844   size_t n = m_pCurrentGroup->Entries().Count();
 845   if ( bRecursive ) {
 846     wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
 847     size_t nSubgroups = m_pCurrentGroup->Groups().Count();
 848     for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
 849       CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
 850       n += GetNumberOfEntries(TRUE);
 851       CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
 852     }
 853   }
 854
 855   return n;
 856 }
 857
 858 size_t wxFileConfig::GetNumberOfGroups(bool bRecursive) const
 859 {
 860   size_t n = m_pCurrentGroup->Groups().Count();
 861   if ( bRecursive ) {
 862     wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
 863     size_t nSubgroups = m_pCurrentGroup->Groups().Count();
 864     for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
 865       CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
 866       n += GetNumberOfGroups(TRUE);
 867       CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
 868     }
 869   }
 870
 871   return n;
 872 }
 873
 874 // ----------------------------------------------------------------------------
 875 // tests for existence
 876 // ----------------------------------------------------------------------------
 877
 878 bool wxFileConfig::HasGroup(const wxString& strName) const
 879 {
 880   wxConfigPathChanger path(this, strName);
 881
 882   wxFileConfigGroup *pGroup = m_pCurrentGroup->FindSubgroup(path.Name());
 883   return pGroup != NULL;
 884 }
 885
 886 bool wxFileConfig::HasEntry(const wxString& strName) const
 887 {
 888   wxConfigPathChanger path(this, strName);
 889
 890   wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
 891   return pEntry != NULL;
 892 }
 893
 894 // ----------------------------------------------------------------------------
 895 // read/write values
 896 // ----------------------------------------------------------------------------
 897
 898 bool wxFileConfig::Read(const wxString& key,
 899                         wxString* pStr) const
 900 {
 901   wxConfigPathChanger path(this, key);
 902
 903   wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
 904   if (pEntry == NULL) {
 905     return FALSE;
 906   }
 907
 908   *pStr = ExpandEnvVars(pEntry->Value());
 909   return TRUE;
 910 }
 911
 912 bool wxFileConfig::Read(const wxString& key,
 913                         wxString* pStr, const wxString& defVal) const
 914 {
 915   wxConfigPathChanger path(this, key);
 916
 917   wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
 918   bool ok;
 919   if (pEntry == NULL) {
 920     if( IsRecordingDefaults() )
 921       ((wxFileConfig *)this)->Write(key,defVal);
 922     *pStr = ExpandEnvVars(defVal);
 923     ok = FALSE;
 924   }
 925   else {
 926     *pStr = ExpandEnvVars(pEntry->Value());
 927     ok = TRUE;
 928   }
 929
 930   return ok;
 931 }
 932
 933 bool wxFileConfig::Read(const wxString& key, long *pl) const
 934 {
 935   wxString str;
 936   if ( !Read(key, & str) )
 937   {
 938     return FALSE;
 939   }
 940
 941   *pl = wxAtol(str);
 942   return TRUE;
 943 }
 944
 945 bool wxFileConfig::Write(const wxString& key, const wxString& szValue)
 946 {
 947   wxConfigPathChanger path(this, key);
 948
 949   wxString strName = path.Name();
 950   if ( strName.IsEmpty() ) {
 951     // setting the value of a group is an error
 952     wxASSERT_MSG( wxIsEmpty(szValue), wxT("can't set value of a group!") );
 953
 954     // ... except if it's empty in which case it's a way to force it's creation
 955     m_pCurrentGroup->SetDirty();
 956
 957     // this will add a line for this group if it didn't have it before
 958     (void)m_pCurrentGroup->GetGroupLine();
 959   }
 960   else {
 961     // writing an entry
 962
 963     // check that the name is reasonable
 964     if ( strName[0u] == wxCONFIG_IMMUTABLE_PREFIX ) {
 965       wxLogError(_("Config entry name cannot start with '%c'."),
 966                  wxCONFIG_IMMUTABLE_PREFIX);
 967       return FALSE;
 968     }
 969
 970     wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strName);
 971     if ( pEntry == NULL )
 972       pEntry = m_pCurrentGroup->AddEntry(strName);
 973
 974     pEntry->SetValue(szValue);
 975   }
 976
 977   return TRUE;
 978 }
 979
 980 bool wxFileConfig::Write(const wxString& key, long lValue)
 981 {
 982   // ltoa() is not ANSI :-(
 983   wxString buf;
 984   buf.Printf(wxT("%ld"), lValue);
 985   return Write(key, buf);
 986 }
 987
 988 bool wxFileConfig::Flush(bool /* bCurrentOnly */)
 989 {
 990   if ( LineListIsEmpty() || !m_pRootGroup->IsDirty() || !m_strLocalFile )
 991     return TRUE;
 992
 993 #ifdef __UNIX__
 994   // set the umask if needed
 995   mode_t umaskOld = 0;
 996   if ( m_umask != -1 )
 997   {
 998       umaskOld = umask((mode_t)m_umask);
 999   }
1000 #endif // __UNIX__
1001
1002   wxTempFile file(m_strLocalFile);
1003
1004   if ( !file.IsOpened() ) {
1005     wxLogError(_("can't open user configuration file."));
1006     return FALSE;
1007   }
1008
1009   // write all strings to file
1010   for ( wxFileConfigLineList *p = m_linesHead; p != NULL; p = p->Next() ) {
1011     if ( !file.Write(p->Text() + wxTextFile::GetEOL()) ) {
1012       wxLogError(_("can't write user configuration file."));
1013       return FALSE;
1014     }
1015   }
1016
1017   bool ret = file.Commit();
1018
1019 #if defined(__WXMAC__)
1020   if ( ret )
1021   {
1022         FSSpec spec ;
1023
1024         wxMacFilename2FSSpec( m_strLocalFile , &spec ) ;
1025         FInfo finfo ;
1026         if ( FSpGetFInfo( &spec , &finfo ) == noErr )
1027         {
1028                 finfo.fdType = 'TEXT' ;
1029                 finfo.fdCreator = 'ttxt' ;
1030                 FSpSetFInfo( &spec , &finfo ) ;
1031         }
1032   }
1033 #endif // __WXMAC__
1034
1035 #ifdef __UNIX__
1036   // restore the old umask if we changed it
1037   if ( m_umask != -1 )
1038   {
1039       (void)umask(umaskOld);
1040   }
1041 #endif // __UNIX__
1042
1043   return ret;
1044 }
1045
1046 // ----------------------------------------------------------------------------
1047 // renaming groups/entries
1048 // ----------------------------------------------------------------------------
1049
1050 bool wxFileConfig::RenameEntry(const wxString& oldName,
1051                                const wxString& newName)
1052 {
1053     // check that the entry exists
1054     wxFileConfigEntry *oldEntry = m_pCurrentGroup->FindEntry(oldName);
1055     if ( !oldEntry )
1056         return FALSE;
1057
1058     // check that the new entry doesn't already exist
1059     if ( m_pCurrentGroup->FindEntry(newName) )
1060         return FALSE;
1061
1062     // delete the old entry, create the new one
1063     wxString value = oldEntry->Value();
1064     if ( !m_pCurrentGroup->DeleteEntry(oldName) )
1065         return FALSE;
1066
1067     wxFileConfigEntry *newEntry = m_pCurrentGroup->AddEntry(newName);
1068     newEntry->SetValue(value);
1069
1070     return TRUE;
1071 }
1072
1073 bool wxFileConfig::RenameGroup(const wxString& oldName,
1074                                const wxString& newName)
1075 {
1076     // check that the group exists
1077     wxFileConfigGroup *group = m_pCurrentGroup->FindSubgroup(oldName);
1078     if ( !group )
1079         return FALSE;
1080
1081     // check that the new group doesn't already exist
1082     if ( m_pCurrentGroup->FindSubgroup(newName) )
1083         return FALSE;
1084
1085     group->Rename(newName);
1086
1087     return TRUE;
1088 }
1089
1090 // ----------------------------------------------------------------------------
1091 // delete groups/entries
1092 // ----------------------------------------------------------------------------
1093
1094 bool wxFileConfig::DeleteEntry(const wxString& key, bool bGroupIfEmptyAlso)
1095 {
1096   wxConfigPathChanger path(this, key);
1097
1098   if ( !m_pCurrentGroup->DeleteEntry(path.Name()) )
1099     return FALSE;
1100
1101   if ( bGroupIfEmptyAlso && m_pCurrentGroup->IsEmpty() ) {
1102     if ( m_pCurrentGroup != m_pRootGroup ) {
1103       wxFileConfigGroup *pGroup = m_pCurrentGroup;
1104       SetPath(wxT(".."));  // changes m_pCurrentGroup!
1105       m_pCurrentGroup->DeleteSubgroupByName(pGroup->Name());
1106     }
1107     //else: never delete the root group
1108   }
1109
1110   return TRUE;
1111 }
1112
1113 bool wxFileConfig::DeleteGroup(const wxString& key)
1114 {
1115   wxConfigPathChanger path(this, key);
1116
1117   return m_pCurrentGroup->DeleteSubgroupByName(path.Name());
1118 }
1119
1120 bool wxFileConfig::DeleteAll()
1121 {
1122   CleanUp();
1123
1124   if ( wxRemove(m_strLocalFile) == -1 )
1125     wxLogSysError(_("can't delete user configuration file '%s'"), m_strLocalFile.c_str());
1126
1127   m_strLocalFile = m_strGlobalFile = wxT("");
1128   Init();
1129
1130   return TRUE;
1131 }
1132
1133 // ----------------------------------------------------------------------------
1134 // linked list functions
1135 // ----------------------------------------------------------------------------
1136
1137 // append a new line to the end of the list
1138 wxFileConfigLineList *wxFileConfig::LineListAppend(const wxString& str)
1139 {
1140   wxFileConfigLineList *pLine = new wxFileConfigLineList(str);
1141
1142   if ( m_linesTail == NULL ) {
1143     // list is empty
1144     m_linesHead = pLine;
1145   }
1146   else {
1147     // adjust pointers
1148     m_linesTail->SetNext(pLine);
1149     pLine->SetPrev(m_linesTail);
1150   }
1151
1152   m_linesTail = pLine;
1153   return m_linesTail;
1154 }
1155
1156 // insert a new line after the given one or in the very beginning if !pLine
1157 wxFileConfigLineList *wxFileConfig::LineListInsert(const wxString& str,
1158                                                      wxFileConfigLineList *pLine)
1159 {
1160   if ( pLine == m_linesTail )
1161     return LineListAppend(str);
1162
1163   wxFileConfigLineList *pNewLine = new wxFileConfigLineList(str);
1164   if ( pLine == NULL ) {
1165     // prepend to the list
1166     pNewLine->SetNext(m_linesHead);
1167     m_linesHead->SetPrev(pNewLine);
1168     m_linesHead = pNewLine;
1169   }
1170   else {
1171     // insert before pLine
1172     wxFileConfigLineList *pNext = pLine->Next();
1173     pNewLine->SetNext(pNext);
1174     pNewLine->SetPrev(pLine);
1175     pNext->SetPrev(pNewLine);
1176     pLine->SetNext(pNewLine);
1177   }
1178
1179   return pNewLine;
1180 }
1181
1182 void wxFileConfig::LineListRemove(wxFileConfigLineList *pLine)
1183 {
1184   wxFileConfigLineList *pPrev = pLine->Prev(),
1185            *pNext = pLine->Next();
1186
1187   // first entry?
1188   if ( pPrev == NULL )
1189     m_linesHead = pNext;
1190   else
1191     pPrev->SetNext(pNext);
1192
1193   // last entry?
1194   if ( pNext == NULL )
1195     m_linesTail = pPrev;
1196   else
1197     pNext->SetPrev(pPrev);
1198
1199   delete pLine;
1200 }
1201
1202 bool wxFileConfig::LineListIsEmpty()
1203 {
1204   return m_linesHead == NULL;
1205 }
1206
1207 // ============================================================================
1208 // wxFileConfig::wxFileConfigGroup
1209 // ============================================================================
1210
1211 // ----------------------------------------------------------------------------
1212 // ctor/dtor
1213 // ----------------------------------------------------------------------------
1214
1215 // ctor
1216 wxFileConfigGroup::wxFileConfigGroup(wxFileConfigGroup *pParent,
1217                                        const wxString& strName,
1218                                        wxFileConfig *pConfig)
1219                          : m_aEntries(CompareEntries),
1220                            m_aSubgroups(CompareGroups),
1221                            m_strName(strName)
1222 {
1223   m_pConfig = pConfig;
1224   m_pParent = pParent;
1225   m_bDirty  = FALSE;
1226   m_pLine   = NULL;
1227
1228   m_pLastEntry = NULL;
1229   m_pLastGroup = NULL;
1230 }
1231
1232 // dtor deletes all children
1233 wxFileConfigGroup::~wxFileConfigGroup()
1234 {
1235   // entries
1236   size_t n, nCount = m_aEntries.Count();
1237   for ( n = 0; n < nCount; n++ )
1238     delete m_aEntries[n];
1239
1240   // subgroups
1241   nCount = m_aSubgroups.Count();
1242   for ( n = 0; n < nCount; n++ )
1243     delete m_aSubgroups[n];
1244 }
1245
1246 // ----------------------------------------------------------------------------
1247 // line
1248 // ----------------------------------------------------------------------------
1249
1250 void wxFileConfigGroup::SetLine(wxFileConfigLineList *pLine)
1251 {
1252   wxASSERT( m_pLine == NULL ); // shouldn't be called twice
1253
1254   m_pLine = pLine;
1255 }
1256
1257 /*
1258   This is a bit complicated, so let me explain it in details. All lines that
1259   were read from the local file (the only one we will ever modify) are stored
1260   in a (doubly) linked list. Our problem is to know at which position in this
1261   list should we insert the new entries/subgroups. To solve it we keep three
1262   variables for each group: m_pLine, m_pLastEntry and m_pLastGroup.
1263
1264   m_pLine points to the line containing "[group_name]"
1265   m_pLastEntry points to the last entry of this group in the local file.
1266   m_pLastGroup                   subgroup
1267
1268   Initially, they're NULL all three. When the group (an entry/subgroup) is read
1269   from the local file, the corresponding variable is set. However, if the group
1270   was read from the global file and then modified or created by the application
1271   these variables are still NULL and we need to create the corresponding lines.
1272   See the following functions (and comments preceding them) for the details of
1273   how we do it.
1274
1275   Also, when our last entry/group are deleted we need to find the new last
1276   element - the code in DeleteEntry/Subgroup does this by backtracking the list
1277   of lines until it either founds an entry/subgroup (and this is the new last
1278   element) or the m_pLine of the group, in which case there are no more entries
1279   (or subgroups) left and m_pLast<element> becomes NULL.
1280
1281   NB: This last problem could be avoided for entries if we added new entries
1282       immediately after m_pLine, but in this case the entries would appear
1283       backwards in the config file (OTOH, it's not that important) and as we
1284       would still need to do it for the subgroups the code wouldn't have been
1285       significantly less complicated.
1286 */
1287
1288 // Return the line which contains "[our name]". If we're still not in the list,
1289 // add our line to it immediately after the last line of our parent group if we
1290 // have it or in the very beginning if we're the root group.
1291 wxFileConfigLineList *wxFileConfigGroup::GetGroupLine()
1292 {
1293   if ( m_pLine == NULL ) {
1294     wxFileConfigGroup *pParent = Parent();
1295
1296     // this group wasn't present in local config file, add it now
1297     if ( pParent != NULL ) {
1298       wxString strFullName;
1299       strFullName << wxT("[")
1300                   // +1: no '/'
1301                   << FilterOutEntryName(GetFullName().c_str() + 1)
1302                   << wxT("]");
1303       m_pLine = m_pConfig->LineListInsert(strFullName,
1304                                           pParent->GetLastGroupLine());
1305       pParent->SetLastGroup(this);  // we're surely after all the others
1306     }
1307     else {
1308       // we return NULL, so that LineListInsert() will insert us in the
1309       // very beginning
1310     }
1311   }
1312
1313   return m_pLine;
1314 }
1315
1316 // Return the last line belonging to the subgroups of this group (after which
1317 // we can add a new subgroup), if we don't have any subgroups or entries our
1318 // last line is the group line (m_pLine) itself.
1319 wxFileConfigLineList *wxFileConfigGroup::GetLastGroupLine()
1320 {
1321   // if we have any subgroups, our last line is the last line of the last
1322   // subgroup
1323   if ( m_pLastGroup != NULL ) {
1324     wxFileConfigLineList *pLine = m_pLastGroup->GetLastGroupLine();
1325
1326     wxASSERT( pLine != NULL );  // last group must have !NULL associated line
1327     return pLine;
1328   }
1329
1330   // no subgroups, so the last line is the line of thelast entry (if any)
1331   return GetLastEntryLine();
1332 }
1333
1334 // return the last line belonging to the entries of this group (after which
1335 // we can add a new entry), if we don't have any entries we will add the new
1336 // one immediately after the group line itself.
1337 wxFileConfigLineList *wxFileConfigGroup::GetLastEntryLine()
1338 {
1339   if ( m_pLastEntry != NULL ) {
1340     wxFileConfigLineList *pLine = m_pLastEntry->GetLine();
1341
1342     wxASSERT( pLine != NULL );  // last entry must have !NULL associated line
1343     return pLine;
1344   }
1345
1346   // no entries: insert after the group header
1347   return GetGroupLine();
1348 }
1349
1350 // ----------------------------------------------------------------------------
1351 // group name
1352 // ----------------------------------------------------------------------------
1353
1354 void wxFileConfigGroup::Rename(const wxString& newName)
1355 {
1356     m_strName = newName;
1357
1358     wxFileConfigLineList *line = GetGroupLine();
1359     wxString strFullName;
1360     strFullName << wxT("[") << (GetFullName().c_str() + 1) << wxT("]"); // +1: no '/'
1361     line->SetText(strFullName);
1362
1363     SetDirty();
1364 }
1365
1366 wxString wxFileConfigGroup::GetFullName() const
1367 {
1368   if ( Parent() )
1369     return Parent()->GetFullName() + wxCONFIG_PATH_SEPARATOR + Name();
1370   else
1371     return wxT("");
1372 }
1373
1374 // ----------------------------------------------------------------------------
1375 // find an item
1376 // ----------------------------------------------------------------------------
1377
1378 // use binary search because the array is sorted
1379 wxFileConfigEntry *
1380 wxFileConfigGroup::FindEntry(const wxChar *szName) const
1381 {
1382   size_t i,
1383        lo = 0,
1384        hi = m_aEntries.Count();
1385   int res;
1386   wxFileConfigEntry *pEntry;
1387
1388   while ( lo < hi ) {
1389     i = (lo + hi)/2;
1390     pEntry = m_aEntries[i];
1391
1392     #if wxCONFIG_CASE_SENSITIVE
1393       res = wxStrcmp(pEntry->Name(), szName);
1394     #else
1395       res = wxStricmp(pEntry->Name(), szName);
1396     #endif
1397
1398     if ( res > 0 )
1399       hi = i;
1400     else if ( res < 0 )
1401       lo = i + 1;
1402     else
1403       return pEntry;
1404   }
1405
1406   return NULL;
1407 }
1408
1409 wxFileConfigGroup *
1410 wxFileConfigGroup::FindSubgroup(const wxChar *szName) const
1411 {
1412   size_t i,
1413        lo = 0,
1414        hi = m_aSubgroups.Count();
1415   int res;
1416   wxFileConfigGroup *pGroup;
1417
1418   while ( lo < hi ) {
1419     i = (lo + hi)/2;
1420     pGroup = m_aSubgroups[i];
1421
1422     #if wxCONFIG_CASE_SENSITIVE
1423       res = wxStrcmp(pGroup->Name(), szName);
1424     #else
1425       res = wxStricmp(pGroup->Name(), szName);
1426     #endif
1427
1428     if ( res > 0 )
1429       hi = i;
1430     else if ( res < 0 )
1431       lo = i + 1;
1432     else
1433       return pGroup;
1434   }
1435
1436   return NULL;
1437 }
1438
1439 // ----------------------------------------------------------------------------
1440 // create a new item
1441 // ----------------------------------------------------------------------------
1442
1443 // create a new entry and add it to the current group
1444 wxFileConfigEntry *
1445 wxFileConfigGroup::AddEntry(const wxString& strName, int nLine)
1446 {
1447   wxASSERT( FindEntry(strName) == NULL );
1448
1449   wxFileConfigEntry *pEntry = new wxFileConfigEntry(this, strName, nLine);
1450   m_aEntries.Add(pEntry);
1451
1452   return pEntry;
1453 }
1454
1455 // create a new group and add it to the current group
1456 wxFileConfigGroup *
1457 wxFileConfigGroup::AddSubgroup(const wxString& strName)
1458 {
1459   wxASSERT( FindSubgroup(strName) == NULL );
1460
1461   wxFileConfigGroup *pGroup = new wxFileConfigGroup(this, strName, m_pConfig);
1462   m_aSubgroups.Add(pGroup);
1463
1464   return pGroup;
1465 }
1466
1467 // ----------------------------------------------------------------------------
1468 // delete an item
1469 // ----------------------------------------------------------------------------
1470
1471 /*
1472   The delete operations are _very_ slow if we delete the last item of this
1473   group (see comments before GetXXXLineXXX functions for more details),
1474   so it's much better to start with the first entry/group if we want to
1475   delete several of them.
1476  */
1477
1478 bool wxFileConfigGroup::DeleteSubgroupByName(const wxChar *szName)
1479 {
1480   return DeleteSubgroup(FindSubgroup(szName));
1481 }
1482
1483 // doesn't delete the subgroup itself, but does remove references to it from
1484 // all other data structures (and normally the returned pointer should be
1485 // deleted a.s.a.p. because there is nothing much to be done with it anyhow)
1486 bool wxFileConfigGroup::DeleteSubgroup(wxFileConfigGroup *pGroup)
1487 {
1488   wxCHECK( pGroup != NULL, FALSE ); // deleting non existing group?
1489
1490   // delete all entries
1491   size_t nCount = pGroup->m_aEntries.Count();
1492   for ( size_t nEntry = 0; nEntry < nCount; nEntry++ ) {
1493     wxFileConfigLineList *pLine = pGroup->m_aEntries[nEntry]->GetLine();
1494     if ( pLine != NULL )
1495       m_pConfig->LineListRemove(pLine);
1496   }
1497
1498   // and subgroups of this sungroup
1499   nCount = pGroup->m_aSubgroups.Count();
1500   for ( size_t nGroup = 0; nGroup < nCount; nGroup++ ) {
1501     pGroup->DeleteSubgroup(pGroup->m_aSubgroups[0]);
1502   }
1503
1504   wxFileConfigLineList *pLine = pGroup->m_pLine;
1505   if ( pLine != NULL ) {
1506     // notice that we may do this test inside the previous "if" because the
1507     // last entry's line is surely !NULL
1508     if ( pGroup == m_pLastGroup ) {
1509       // our last entry is being deleted - find the last one which stays
1510       wxASSERT( m_pLine != NULL );  // we have a subgroup with !NULL pLine...
1511
1512       // go back until we find a subgroup or reach the group's line
1513       wxFileConfigGroup *pNewLast = NULL;
1514       size_t n, nSubgroups = m_aSubgroups.Count();
1515       wxFileConfigLineList *pl;
1516       for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() ) {
1517         // is it our subgroup?
1518         for ( n = 0; (pNewLast == NULL) && (n < nSubgroups); n++ ) {
1519           // do _not_ call GetGroupLine! we don't want to add it to the local
1520           // file if it's not already there
1521           if ( m_aSubgroups[n]->m_pLine == m_pLine )
1522             pNewLast = m_aSubgroups[n];
1523         }
1524
1525         if ( pNewLast != NULL ) // found?
1526           break;
1527       }
1528
1529       if ( pl == m_pLine ) {
1530         wxASSERT( !pNewLast );  // how comes it has the same line as we?
1531
1532         // we've reached the group line without finding any subgroups
1533         m_pLastGroup = NULL;
1534       }
1535       else
1536         m_pLastGroup = pNewLast;
1537     }
1538
1539     m_pConfig->LineListRemove(pLine);
1540   }
1541
1542   SetDirty();
1543
1544   m_aSubgroups.Remove(pGroup);
1545   delete pGroup;
1546
1547   return TRUE;
1548 }
1549
1550 bool wxFileConfigGroup::DeleteEntry(const wxChar *szName)
1551 {
1552   wxFileConfigEntry *pEntry = FindEntry(szName);
1553   wxCHECK( pEntry != NULL, FALSE );  // deleting non existing item?
1554
1555   wxFileConfigLineList *pLine = pEntry->GetLine();
1556   if ( pLine != NULL ) {
1557     // notice that we may do this test inside the previous "if" because the
1558     // last entry's line is surely !NULL
1559     if ( pEntry == m_pLastEntry ) {
1560       // our last entry is being deleted - find the last one which stays
1561       wxASSERT( m_pLine != NULL );  // if we have an entry with !NULL pLine...
1562
1563       // go back until we find another entry or reach the group's line
1564       wxFileConfigEntry *pNewLast = NULL;
1565       size_t n, nEntries = m_aEntries.Count();
1566       wxFileConfigLineList *pl;
1567       for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() ) {
1568         // is it our subgroup?
1569         for ( n = 0; (pNewLast == NULL) && (n < nEntries); n++ ) {
1570           if ( m_aEntries[n]->GetLine() == m_pLine )
1571             pNewLast = m_aEntries[n];
1572         }
1573
1574         if ( pNewLast != NULL ) // found?
1575           break;
1576       }
1577
1578       if ( pl == m_pLine ) {
1579         wxASSERT( !pNewLast );  // how comes it has the same line as we?
1580
1581         // we've reached the group line without finding any subgroups
1582         m_pLastEntry = NULL;
1583       }
1584       else
1585         m_pLastEntry = pNewLast;
1586     }
1587
1588     m_pConfig->LineListRemove(pLine);
1589   }
1590
1591   // we must be written back for the changes to be saved
1592   SetDirty();
1593
1594   m_aEntries.Remove(pEntry);
1595   delete pEntry;
1596
1597   return TRUE;
1598 }
1599
1600 // ----------------------------------------------------------------------------
1601 //
1602 // ----------------------------------------------------------------------------
1603 void wxFileConfigGroup::SetDirty()
1604 {
1605   m_bDirty = TRUE;
1606   if ( Parent() != NULL )             // propagate upwards
1607     Parent()->SetDirty();
1608 }
1609
1610 // ============================================================================
1611 // wxFileConfig::wxFileConfigEntry
1612 // ============================================================================
1613
1614 // ----------------------------------------------------------------------------
1615 // ctor
1616 // ----------------------------------------------------------------------------
1617 wxFileConfigEntry::wxFileConfigEntry(wxFileConfigGroup *pParent,
1618                                        const wxString& strName,
1619                                        int nLine)
1620                          : m_strName(strName)
1621 {
1622   wxASSERT( !strName.IsEmpty() );
1623
1624   m_pParent = pParent;
1625   m_nLine   = nLine;
1626   m_pLine   = NULL;
1627
1628   m_bDirty =
1629   m_bHasValue = FALSE;
1630
1631   m_bImmutable = strName[0] == wxCONFIG_IMMUTABLE_PREFIX;
1632   if ( m_bImmutable )
1633     m_strName.erase(0, 1);  // remove first character
1634 }
1635
1636 // ----------------------------------------------------------------------------
1637 // set value
1638 // ----------------------------------------------------------------------------
1639
1640 void wxFileConfigEntry::SetLine(wxFileConfigLineList *pLine)
1641 {
1642   if ( m_pLine != NULL ) {
1643     wxLogWarning(_("entry '%s' appears more than once in group '%s'"),
1644                  Name().c_str(), m_pParent->GetFullName().c_str());
1645   }
1646
1647   m_pLine = pLine;
1648   Group()->SetLastEntry(this);
1649 }
1650
1651 // second parameter is FALSE if we read the value from file and prevents the
1652 // entry from being marked as 'dirty'
1653 void wxFileConfigEntry::SetValue(const wxString& strValue, bool bUser)
1654 {
1655   if ( bUser && IsImmutable() ) {
1656     wxLogWarning(_("attempt to change immutable key '%s' ignored."),
1657                  Name().c_str());
1658     return;
1659   }
1660
1661   // do nothing if it's the same value: but don't test for it if m_bHasValue
1662   // hadn't been set yet or we'd never write empty values to the file
1663   if ( m_bHasValue && strValue == m_strValue )
1664     return;
1665
1666   m_bHasValue = TRUE;
1667   m_strValue = strValue;
1668
1669   if ( bUser ) {
1670     wxString strVal = FilterOutValue(strValue);
1671     wxString strLine;
1672     strLine << FilterOutEntryName(m_strName) << wxT('=') << strVal;
1673
1674     if ( m_pLine != NULL ) {
1675       // entry was read from the local config file, just modify the line
1676       m_pLine->SetText(strLine);
1677     }
1678     else {
1679       // add a new line to the file
1680       wxASSERT( m_nLine == wxNOT_FOUND );   // consistency check
1681
1682       m_pLine = Group()->Config()->LineListInsert(strLine,
1683                                                   Group()->GetLastEntryLine());
1684       Group()->SetLastEntry(this);
1685     }
1686
1687     SetDirty();
1688   }
1689 }
1690
1691 void wxFileConfigEntry::SetDirty()
1692 {
1693   m_bDirty = TRUE;
1694   Group()->SetDirty();
1695 }
1696
1697 // ============================================================================
1698 // global functions
1699 // ============================================================================
1700
1701 // ----------------------------------------------------------------------------
1702 // compare functions for array sorting
1703 // ----------------------------------------------------------------------------
1704
1705 int CompareEntries(wxFileConfigEntry *p1, wxFileConfigEntry *p2)
1706 {
1707   #if wxCONFIG_CASE_SENSITIVE
1708     return wxStrcmp(p1->Name(), p2->Name());
1709   #else
1710     return wxStricmp(p1->Name(), p2->Name());
1711   #endif
1712 }
1713
1714 int CompareGroups(wxFileConfigGroup *p1, wxFileConfigGroup *p2)
1715 {
1716   #if wxCONFIG_CASE_SENSITIVE
1717     return wxStrcmp(p1->Name(), p2->Name());
1718   #else
1719     return wxStricmp(p1->Name(), p2->Name());
1720   #endif
1721 }
1722
1723 // ----------------------------------------------------------------------------
1724 // filter functions
1725 // ----------------------------------------------------------------------------
1726
1727 // undo FilterOutValue
1728 static wxString FilterInValue(const wxString& str)
1729 {
1730   wxString strResult;
1731   strResult.Alloc(str.Len());
1732
1733   bool bQuoted = !str.IsEmpty() && str[0] == '"';
1734
1735   for ( size_t n = bQuoted ? 1 : 0; n < str.Len(); n++ ) {
1736     if ( str[n] == wxT('\\') ) {
1737       switch ( str[++n] ) {
1738         case wxT('n'):
1739           strResult += wxT('\n');
1740           break;
1741
1742         case wxT('r'):
1743           strResult += wxT('\r');
1744           break;
1745
1746         case wxT('t'):
1747           strResult += wxT('\t');
1748           break;
1749
1750         case wxT('\\'):
1751           strResult += wxT('\\');
1752           break;
1753
1754         case wxT('"'):
1755           strResult += wxT('"');
1756           break;
1757       }
1758     }
1759     else {
1760       if ( str[n] != wxT('"') || !bQuoted )
1761         strResult += str[n];
1762       else if ( n != str.Len() - 1 ) {
1763         wxLogWarning(_("unexpected \" at position %d in '%s'."),
1764                      n, str.c_str());
1765       }
1766       //else: it's the last quote of a quoted string, ok
1767     }
1768   }
1769
1770   return strResult;
1771 }
1772
1773 // quote the string before writing it to file
1774 static wxString FilterOutValue(const wxString& str)
1775 {
1776    if ( !str )
1777       return str;
1778
1779   wxString strResult;
1780   strResult.Alloc(str.Len());
1781
1782   // quoting is necessary to preserve spaces in the beginning of the string
1783   bool bQuote = wxIsspace(str[0]) || str[0] == wxT('"');
1784
1785   if ( bQuote )
1786     strResult += wxT('"');
1787
1788   wxChar c;
1789   for ( size_t n = 0; n < str.Len(); n++ ) {
1790     switch ( str[n] ) {
1791       case wxT('\n'):
1792         c = wxT('n');
1793         break;
1794
1795       case wxT('\r'):
1796         c = wxT('r');
1797         break;
1798
1799       case wxT('\t'):
1800         c = wxT('t');
1801         break;
1802
1803       case wxT('\\'):
1804         c = wxT('\\');
1805         break;
1806
1807       case wxT('"'):
1808         if ( bQuote ) {
1809           c = wxT('"');
1810           break;
1811         }
1812         //else: fall through
1813
1814       default:
1815         strResult += str[n];
1816         continue;   // nothing special to do
1817     }
1818
1819     // we get here only for special characters
1820     strResult << wxT('\\') << c;
1821   }
1822
1823   if ( bQuote )
1824     strResult += wxT('"');
1825
1826   return strResult;
1827 }
1828
1829 // undo FilterOutEntryName
1830 static wxString FilterInEntryName(const wxString& str)
1831 {
1832   wxString strResult;
1833   strResult.Alloc(str.Len());
1834
1835   for ( const wxChar *pc = str.c_str(); *pc != '\0'; pc++ ) {
1836     if ( *pc == wxT('\\') )
1837       pc++;
1838
1839     strResult += *pc;
1840   }
1841
1842   return strResult;
1843 }
1844
1845 // sanitize entry or group name: insert '\\' before any special characters
1846 static wxString FilterOutEntryName(const wxString& str)
1847 {
1848   wxString strResult;
1849   strResult.Alloc(str.Len());
1850
1851   for ( const wxChar *pc = str.c_str(); *pc != wxT('\0'); pc++ ) {
1852     wxChar c = *pc;
1853
1854     // we explicitly allow some of "safe" chars and 8bit ASCII characters
1855     // which will probably never have special meaning
1856     // NB: note that wxCONFIG_IMMUTABLE_PREFIX and wxCONFIG_PATH_SEPARATOR
1857     //     should *not* be quoted
1858     if ( !wxIsalnum(c) && !wxStrchr(wxT("@_/-!.*%"), c) && ((c & 0x80) == 0) )
1859       strResult += wxT('\\');
1860
1861     strResult += c;
1862   }
1863
1864   return strResult;
1865 }
1866
1867 // we can't put ?: in the ctor initializer list because it confuses some
1868 // broken compilers (Borland C++)
1869 static wxString GetAppName(const wxString& appName)
1870 {
1871     if ( !appName && wxTheApp )
1872         return wxTheApp->GetAppName();
1873     else
1874         return appName;
1875 }
1876
1877 #endif // wxUSE_CONFIG
1878