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[wxWidgets.git] / src / common / fileconf.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/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 licence
11 ///////////////////////////////////////////////////////////////////////////////
12
13 // ----------------------------------------------------------------------------
14 // headers
15 // ----------------------------------------------------------------------------
16
17 // For compilers that support precompilation, includes "wx.h".
18 #include "wx/wxprec.h"
19
20 #ifdef __BORLANDC__
21 #pragma hdrstop
22 #endif //__BORLANDC__
23
24 #if wxUSE_CONFIG && wxUSE_FILECONFIG
25
26 #ifndef WX_PRECOMP
27 #include "wx/dynarray.h"
28 #include "wx/string.h"
29 #include "wx/intl.h"
30 #include "wx/log.h"
31 #include "wx/app.h"
32 #include "wx/utils.h" // for wxGetHomeDir
33 #if wxUSE_STREAMS
34 #include "wx/stream.h"
35 #endif // wxUSE_STREAMS
36 #endif //WX_PRECOMP
37
38 #include "wx/file.h"
39 #include "wx/textfile.h"
40 #include "wx/memtext.h"
41 #include "wx/config.h"
42 #include "wx/fileconf.h"
43 #include "wx/filefn.h"
44
45 #if defined(__WXMAC__)
46 #include "wx/mac/private.h" // includes mac headers
47 #include "wx/filename.h" // for MacSetTypeAndCreator
48 #endif
49
50 #if defined(__WXMSW__)
51 #include "wx/msw/private.h"
52 #endif //windows.h
53 #if defined(__WXPM__)
54 #define INCL_DOS
55 #include <os2.h>
56 #endif
57
58 #include <stdlib.h>
59 #include <ctype.h>
60
61 // ----------------------------------------------------------------------------
62 // macros
63 // ----------------------------------------------------------------------------
64 #define CONST_CAST ((wxFileConfig *)this)->
65
66 // ----------------------------------------------------------------------------
67 // constants
68 // ----------------------------------------------------------------------------
69
70 #ifndef MAX_PATH
71 #define MAX_PATH 512
72 #endif
73
74 #define FILECONF_TRACE_MASK _T("fileconf")
75
76 // ----------------------------------------------------------------------------
77 // global functions declarations
78 // ----------------------------------------------------------------------------
79
80 // compare functions for sorting the arrays
81 static int LINKAGEMODE CompareEntries(wxFileConfigEntry *p1, wxFileConfigEntry *p2);
82 static int LINKAGEMODE CompareGroups(wxFileConfigGroup *p1, wxFileConfigGroup *p2);
83
84 // filter strings
85 static wxString FilterInValue(const wxString& str);
86 static wxString FilterOutValue(const wxString& str);
87
88 static wxString FilterInEntryName(const wxString& str);
89 static wxString FilterOutEntryName(const wxString& str);
90
91 // get the name to use in wxFileConfig ctor
92 static wxString GetAppName(const wxString& appname);
93
94 // ============================================================================
95 // private classes
96 // ============================================================================
97
98 // ----------------------------------------------------------------------------
99 // "template" array types
100 // ----------------------------------------------------------------------------
101
102 #ifdef WXMAKINGDLL_BASE
103 WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(wxFileConfigEntry *, ArrayEntries,
104 WXDLLIMPEXP_BASE);
105 WX_DEFINE_SORTED_USER_EXPORTED_ARRAY(wxFileConfigGroup *, ArrayGroups,
106 WXDLLIMPEXP_BASE);
107 #else
108 WX_DEFINE_SORTED_ARRAY(wxFileConfigEntry *, ArrayEntries);
109 WX_DEFINE_SORTED_ARRAY(wxFileConfigGroup *, ArrayGroups);
110 #endif
111
112 // ----------------------------------------------------------------------------
113 // wxFileConfigLineList
114 // ----------------------------------------------------------------------------
115
116 // we store all lines of the local config file as a linked list in memory
117 class wxFileConfigLineList
118 {
119 public:
120 void SetNext(wxFileConfigLineList *pNext) { m_pNext = pNext; }
121 void SetPrev(wxFileConfigLineList *pPrev) { m_pPrev = pPrev; }
122
123 // ctor
124 wxFileConfigLineList(const wxString& str,
125 wxFileConfigLineList *pNext = NULL) : m_strLine(str)
126 { SetNext(pNext); SetPrev(NULL); }
127
128 // next/prev nodes in the linked list
129 wxFileConfigLineList *Next() const { return m_pNext; }
130 wxFileConfigLineList *Prev() const { return m_pPrev; }
131
132 // get/change lines text
133 void SetText(const wxString& str) { m_strLine = str; }
134 const wxString& Text() const { return m_strLine; }
135
136 private:
137 wxString m_strLine; // line contents
138 wxFileConfigLineList *m_pNext, // next node
139 *m_pPrev; // previous one
140
141 DECLARE_NO_COPY_CLASS(wxFileConfigLineList)
142 };
143
144 // ----------------------------------------------------------------------------
145 // wxFileConfigEntry: a name/value pair
146 // ----------------------------------------------------------------------------
147
148 class wxFileConfigEntry
149 {
150 private:
151 wxFileConfigGroup *m_pParent; // group that contains us
152
153 wxString m_strName, // entry name
154 m_strValue; // value
155 bool m_bImmutable:1, // can be overriden locally?
156 m_bHasValue:1; // set after first call to SetValue()
157
158 int m_nLine; // used if m_pLine == NULL only
159
160 // pointer to our line in the linked list or NULL if it was found in global
161 // file (which we don't modify)
162 wxFileConfigLineList *m_pLine;
163
164 public:
165 wxFileConfigEntry(wxFileConfigGroup *pParent,
166 const wxString& strName, int nLine);
167
168 // simple accessors
169 const wxString& Name() const { return m_strName; }
170 const wxString& Value() const { return m_strValue; }
171 wxFileConfigGroup *Group() const { return m_pParent; }
172 bool IsImmutable() const { return m_bImmutable; }
173 bool IsLocal() const { return m_pLine != 0; }
174 int Line() const { return m_nLine; }
175 wxFileConfigLineList *
176 GetLine() const { return m_pLine; }
177
178 // modify entry attributes
179 void SetValue(const wxString& strValue, bool bUser = true);
180 void SetLine(wxFileConfigLineList *pLine);
181
182 DECLARE_NO_COPY_CLASS(wxFileConfigEntry)
183 };
184
185 // ----------------------------------------------------------------------------
186 // wxFileConfigGroup: container of entries and other groups
187 // ----------------------------------------------------------------------------
188
189 class wxFileConfigGroup
190 {
191 private:
192 wxFileConfig *m_pConfig; // config object we belong to
193 wxFileConfigGroup *m_pParent; // parent group (NULL for root group)
194 ArrayEntries m_aEntries; // entries in this group
195 ArrayGroups m_aSubgroups; // subgroups
196 wxString m_strName; // group's name
197 wxFileConfigLineList *m_pLine; // pointer to our line in the linked list
198 wxFileConfigEntry *m_pLastEntry; // last entry/subgroup of this group in the
199 wxFileConfigGroup *m_pLastGroup; // local file (we insert new ones after it)
200
201 // DeleteSubgroupByName helper
202 bool DeleteSubgroup(wxFileConfigGroup *pGroup);
203
204 // used by Rename()
205 void UpdateGroupAndSubgroupsLines();
206
207 public:
208 // ctor
209 wxFileConfigGroup(wxFileConfigGroup *pParent, const wxString& strName, wxFileConfig *);
210
211 // dtor deletes all entries and subgroups also
212 ~wxFileConfigGroup();
213
214 // simple accessors
215 const wxString& Name() const { return m_strName; }
216 wxFileConfigGroup *Parent() const { return m_pParent; }
217 wxFileConfig *Config() const { return m_pConfig; }
218
219 const ArrayEntries& Entries() const { return m_aEntries; }
220 const ArrayGroups& Groups() const { return m_aSubgroups; }
221 bool IsEmpty() const { return Entries().IsEmpty() && Groups().IsEmpty(); }
222
223 // find entry/subgroup (NULL if not found)
224 wxFileConfigGroup *FindSubgroup(const wxChar *szName) const;
225 wxFileConfigEntry *FindEntry (const wxChar *szName) const;
226
227 // delete entry/subgroup, return false if doesn't exist
228 bool DeleteSubgroupByName(const wxChar *szName);
229 bool DeleteEntry(const wxChar *szName);
230
231 // create new entry/subgroup returning pointer to newly created element
232 wxFileConfigGroup *AddSubgroup(const wxString& strName);
233 wxFileConfigEntry *AddEntry (const wxString& strName, int nLine = wxNOT_FOUND);
234
235 void SetLine(wxFileConfigLineList *pLine);
236
237 // rename: no checks are done to ensure that the name is unique!
238 void Rename(const wxString& newName);
239
240 //
241 wxString GetFullName() const;
242
243 // get the last line belonging to an entry/subgroup of this group
244 wxFileConfigLineList *GetGroupLine(); // line which contains [group]
245 wxFileConfigLineList *GetLastEntryLine(); // after which our subgroups start
246 wxFileConfigLineList *GetLastGroupLine(); // after which the next group starts
247
248 // called by entries/subgroups when they're created/deleted
249 void SetLastEntry(wxFileConfigEntry *pEntry);
250 void SetLastGroup(wxFileConfigGroup *pGroup)
251 { m_pLastGroup = pGroup; }
252
253 DECLARE_NO_COPY_CLASS(wxFileConfigGroup)
254 };
255
256 // ============================================================================
257 // implementation
258 // ============================================================================
259
260 // ----------------------------------------------------------------------------
261 // static functions
262 // ----------------------------------------------------------------------------
263 wxString wxFileConfig::GetGlobalDir()
264 {
265 wxString strDir;
266
267 #ifdef __VMS__ // Note if __VMS is defined __UNIX is also defined
268 strDir = wxT("sys$manager:");
269 #elif defined(__WXMAC__)
270 strDir = wxMacFindFolder( (short) kOnSystemDisk, kPreferencesFolderType, kDontCreateFolder ) ;
271 #elif defined( __UNIX__ )
272 strDir = wxT("/etc/");
273 #elif defined(__OS2__)
274 ULONG aulSysInfo[QSV_MAX] = {0};
275 UINT drive;
276 APIRET rc;
277
278 rc = DosQuerySysInfo( 1L, QSV_MAX, (PVOID)aulSysInfo, sizeof(ULONG)*QSV_MAX);
279 if (rc == 0)
280 {
281 drive = aulSysInfo[QSV_BOOT_DRIVE - 1];
282 strDir.Printf(wxT("%c:\\OS2\\"), 'A'+drive-1);
283 }
284 #elif defined(__WXSTUBS__)
285 wxFAIL_MSG( wxT("TODO") );
286 #elif defined(__DOS__)
287 // There's no such thing as global cfg dir in MS-DOS, let's return
288 // current directory (FIXME_MGL?)
289 strDir = wxT(".\\");
290 #elif defined(__WXWINCE__)
291 strDir = wxT("\\Windows\\");
292 #else // Windows
293
294 wxChar szWinDir[MAX_PATH];
295 ::GetWindowsDirectory(szWinDir, MAX_PATH);
296
297 strDir = szWinDir;
298 strDir << wxT('\\');
299 #endif // Unix/Windows
300
301 return strDir;
302 }
303
304 wxString wxFileConfig::GetLocalDir()
305 {
306 wxString strDir;
307
308 #if defined(__WXMAC__) || defined(__DOS__)
309 // no local dir concept on Mac OS 9 or MS-DOS
310 strDir << GetGlobalDir() ;
311 #else
312 wxGetHomeDir(&strDir);
313
314 #ifdef __UNIX__
315 if (
316 (strDir.Last() != wxT('/'))
317 #ifdef __VMS
318 && (strDir.Last() != wxT(']'))
319 #endif
320 )
321 strDir << wxT('/');
322 #else
323 if (strDir.Last() != wxT('\\'))
324 strDir << wxT('\\');
325 #endif
326 #endif
327
328 return strDir;
329 }
330
331 wxString wxFileConfig::GetGlobalFileName(const wxChar *szFile)
332 {
333 wxString str = GetGlobalDir();
334 str << szFile;
335
336 if ( wxStrchr(szFile, wxT('.')) == NULL )
337 #if defined( __WXMAC__ )
338 str << wxT(" Preferences") ;
339 #elif defined( __UNIX__ )
340 str << wxT(".conf");
341 #else // Windows
342 str << wxT(".ini");
343 #endif // UNIX/Win
344
345 return str;
346 }
347
348 wxString wxFileConfig::GetLocalFileName(const wxChar *szFile)
349 {
350 #ifdef __VMS__
351 // On VMS I saw the problem that the home directory was appended
352 // twice for the configuration file. Does that also happen for
353 // other platforms?
354 wxString str = wxT( '.' );
355 #else
356 wxString str = GetLocalDir();
357 #endif
358
359 #if defined( __UNIX__ ) && !defined( __VMS ) && !defined( __WXMAC__ )
360 str << wxT('.');
361 #endif
362
363 str << szFile;
364
365 #if defined(__WINDOWS__) || defined(__DOS__)
366 if ( wxStrchr(szFile, wxT('.')) == NULL )
367 str << wxT(".ini");
368 #endif
369
370 #ifdef __WXMAC__
371 str << wxT(" Preferences") ;
372 #endif
373
374 return str;
375 }
376
377 // ----------------------------------------------------------------------------
378 // ctor
379 // ----------------------------------------------------------------------------
380
381 void wxFileConfig::Init()
382 {
383 m_pCurrentGroup =
384 m_pRootGroup = new wxFileConfigGroup(NULL, wxEmptyString, this);
385
386 m_linesHead =
387 m_linesTail = NULL;
388
389 // It's not an error if (one of the) file(s) doesn't exist.
390
391 // parse the global file
392 if ( !m_strGlobalFile.empty() && wxFile::Exists(m_strGlobalFile) )
393 {
394 wxTextFile fileGlobal(m_strGlobalFile);
395
396 if ( fileGlobal.Open(*m_conv/*ignored in ANSI build*/) )
397 {
398 Parse(fileGlobal, false /* global */);
399 SetRootPath();
400 }
401 else
402 {
403 wxLogWarning(_("can't open global configuration file '%s'."), m_strGlobalFile.c_str());
404 }
405 }
406
407 // parse the local file
408 if ( !m_strLocalFile.empty() && wxFile::Exists(m_strLocalFile) )
409 {
410 wxTextFile fileLocal(m_strLocalFile);
411 if ( fileLocal.Open(*m_conv/*ignored in ANSI build*/) )
412 {
413 Parse(fileLocal, true /* local */);
414 SetRootPath();
415 }
416 else
417 {
418 wxLogWarning(_("can't open user configuration file '%s'."), m_strLocalFile.c_str() );
419 }
420 }
421
422 m_isDirty = false;
423 }
424
425 // constructor supports creation of wxFileConfig objects of any type
426 wxFileConfig::wxFileConfig(const wxString& appName, const wxString& vendorName,
427 const wxString& strLocal, const wxString& strGlobal,
428 long style,
429 const wxMBConv& conv)
430 : wxConfigBase(::GetAppName(appName), vendorName,
431 strLocal, strGlobal,
432 style),
433 m_strLocalFile(strLocal), m_strGlobalFile(strGlobal),
434 m_conv(conv.Clone())
435 {
436 // Make up names for files if empty
437 if ( m_strLocalFile.empty() && (style & wxCONFIG_USE_LOCAL_FILE) )
438 m_strLocalFile = GetLocalFileName(GetAppName());
439
440 if ( m_strGlobalFile.empty() && (style & wxCONFIG_USE_GLOBAL_FILE) )
441 m_strGlobalFile = GetGlobalFileName(GetAppName());
442
443 // Check if styles are not supplied, but filenames are, in which case
444 // add the correct styles.
445 if ( !m_strLocalFile.empty() )
446 SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
447
448 if ( !m_strGlobalFile.empty() )
449 SetStyle(GetStyle() | wxCONFIG_USE_GLOBAL_FILE);
450
451 // if the path is not absolute, prepend the standard directory to it
452 // UNLESS wxCONFIG_USE_RELATIVE_PATH style is set
453 if ( !(style & wxCONFIG_USE_RELATIVE_PATH) )
454 {
455 if ( !m_strLocalFile.empty() && !wxIsAbsolutePath(m_strLocalFile) )
456 {
457 const wxString strLocalOrig = m_strLocalFile;
458 m_strLocalFile = GetLocalDir();
459 m_strLocalFile << strLocalOrig;
460 }
461
462 if ( !m_strGlobalFile.empty() && !wxIsAbsolutePath(m_strGlobalFile) )
463 {
464 const wxString strGlobalOrig = m_strGlobalFile;
465 m_strGlobalFile = GetGlobalDir();
466 m_strGlobalFile << strGlobalOrig;
467 }
468 }
469
470 SetUmask(-1);
471
472 Init();
473 }
474
475 #if wxUSE_STREAMS
476
477 wxFileConfig::wxFileConfig(wxInputStream &inStream, const wxMBConv& conv)
478 : m_conv(conv.Clone())
479 {
480 // always local_file when this constructor is called (?)
481 SetStyle(GetStyle() | wxCONFIG_USE_LOCAL_FILE);
482
483 m_pCurrentGroup =
484 m_pRootGroup = new wxFileConfigGroup(NULL, wxEmptyString, this);
485
486 m_linesHead =
487 m_linesTail = NULL;
488
489 // translate everything to the current (platform-dependent) line
490 // termination character
491 wxString strTrans;
492 {
493 wxString strTmp;
494
495 char buf[1024];
496 do
497 {
498 inStream.Read(buf, WXSIZEOF(buf)-1); // leave room for the NULL
499
500 const wxStreamError err = inStream.GetLastError();
501
502 if ( err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF )
503 {
504 wxLogError(_("Error reading config options."));
505 break;
506 }
507
508 // FIXME: this is broken because if we have part of multibyte
509 // character in the buffer (and another part hasn't been
510 // read yet) we're going to lose data because of conversion
511 // errors
512 buf[inStream.LastRead()] = '\0';
513 strTmp += conv.cMB2WX(buf);
514 }
515 while ( !inStream.Eof() );
516
517 strTrans = wxTextBuffer::Translate(strTmp);
518 }
519
520 wxMemoryText memText;
521
522 // Now we can add the text to the memory text. To do this we extract line
523 // by line from the translated string, until we've reached the end.
524 //
525 // VZ: all this is horribly inefficient, we should do the translation on
526 // the fly in one pass saving both memory and time (TODO)
527
528 const wxChar *pEOL = wxTextBuffer::GetEOL(wxTextBuffer::typeDefault);
529 const size_t EOLLen = wxStrlen(pEOL);
530
531 int posLineStart = strTrans.Find(pEOL);
532 while ( posLineStart != -1 )
533 {
534 wxString line(strTrans.Left(posLineStart));
535
536 memText.AddLine(line);
537
538 strTrans = strTrans.Mid(posLineStart + EOLLen);
539
540 posLineStart = strTrans.Find(pEOL);
541 }
542
543 // also add whatever we have left in the translated string.
544 if ( !strTrans.empty() )
545 memText.AddLine(strTrans);
546
547 // Finally we can parse it all.
548 Parse(memText, true /* local */);
549
550 SetRootPath();
551 ResetDirty();
552 }
553
554 #endif // wxUSE_STREAMS
555
556 void wxFileConfig::CleanUp()
557 {
558 delete m_pRootGroup;
559
560 wxFileConfigLineList *pCur = m_linesHead;
561 while ( pCur != NULL ) {
562 wxFileConfigLineList *pNext = pCur->Next();
563 delete pCur;
564 pCur = pNext;
565 }
566 }
567
568 wxFileConfig::~wxFileConfig()
569 {
570 Flush();
571
572 CleanUp();
573
574 delete m_conv;
575 }
576
577 // ----------------------------------------------------------------------------
578 // parse a config file
579 // ----------------------------------------------------------------------------
580
581 void wxFileConfig::Parse(const wxTextBuffer& buffer, bool bLocal)
582 {
583 const wxChar *pStart;
584 const wxChar *pEnd;
585 wxString strLine;
586
587 size_t nLineCount = buffer.GetLineCount();
588
589 for ( size_t n = 0; n < nLineCount; n++ )
590 {
591 strLine = buffer[n];
592
593 // add the line to linked list
594 if ( bLocal )
595 {
596 LineListAppend(strLine);
597
598 // let the root group have its start line as well
599 if ( !n )
600 {
601 m_pCurrentGroup->SetLine(m_linesTail);
602 }
603 }
604
605
606 // skip leading spaces
607 for ( pStart = strLine; wxIsspace(*pStart); pStart++ )
608 ;
609
610 // skip blank/comment lines
611 if ( *pStart == wxT('\0')|| *pStart == wxT(';') || *pStart == wxT('#') )
612 continue;
613
614 if ( *pStart == wxT('[') ) { // a new group
615 pEnd = pStart;
616
617 while ( *++pEnd != wxT(']') ) {
618 if ( *pEnd == wxT('\\') ) {
619 // the next char is escaped, so skip it even if it is ']'
620 pEnd++;
621 }
622
623 if ( *pEnd == wxT('\n') || *pEnd == wxT('\0') ) {
624 // we reached the end of line, break out of the loop
625 break;
626 }
627 }
628
629 if ( *pEnd != wxT(']') ) {
630 wxLogError(_("file '%s': unexpected character %c at line %d."),
631 buffer.GetName(), *pEnd, n + 1);
632 continue; // skip this line
633 }
634
635 // group name here is always considered as abs path
636 wxString strGroup;
637 pStart++;
638 strGroup << wxCONFIG_PATH_SEPARATOR
639 << FilterInEntryName(wxString(pStart, pEnd - pStart));
640
641 // will create it if doesn't yet exist
642 SetPath(strGroup);
643
644 if ( bLocal )
645 {
646 if ( m_pCurrentGroup->Parent() )
647 m_pCurrentGroup->Parent()->SetLastGroup(m_pCurrentGroup);
648 m_pCurrentGroup->SetLine(m_linesTail);
649 }
650
651 // check that there is nothing except comments left on this line
652 bool bCont = true;
653 while ( *++pEnd != wxT('\0') && bCont ) {
654 switch ( *pEnd ) {
655 case wxT('#'):
656 case wxT(';'):
657 bCont = false;
658 break;
659
660 case wxT(' '):
661 case wxT('\t'):
662 // ignore whitespace ('\n' impossible here)
663 break;
664
665 default:
666 wxLogWarning(_("file '%s', line %d: '%s' ignored after group header."),
667 buffer.GetName(), n + 1, pEnd);
668 bCont = false;
669 }
670 }
671 }
672 else { // a key
673 pEnd = pStart;
674 while ( *pEnd && *pEnd != wxT('=') /* && !wxIsspace(*pEnd)*/ ) {
675 if ( *pEnd == wxT('\\') ) {
676 // next character may be space or not - still take it because it's
677 // quoted (unless there is nothing)
678 pEnd++;
679 if ( !*pEnd ) {
680 // the error message will be given below anyhow
681 break;
682 }
683 }
684
685 pEnd++;
686 }
687
688 wxString strKey(FilterInEntryName(wxString(pStart, pEnd).Trim()));
689
690 // skip whitespace
691 while ( wxIsspace(*pEnd) )
692 pEnd++;
693
694 if ( *pEnd++ != wxT('=') ) {
695 wxLogError(_("file '%s', line %d: '=' expected."),
696 buffer.GetName(), n + 1);
697 }
698 else {
699 wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strKey);
700
701 if ( pEntry == NULL ) {
702 // new entry
703 pEntry = m_pCurrentGroup->AddEntry(strKey, n);
704 }
705 else {
706 if ( bLocal && pEntry->IsImmutable() ) {
707 // immutable keys can't be changed by user
708 wxLogWarning(_("file '%s', line %d: value for immutable key '%s' ignored."),
709 buffer.GetName(), n + 1, strKey.c_str());
710 continue;
711 }
712 // the condition below catches the cases (a) and (b) but not (c):
713 // (a) global key found second time in global file
714 // (b) key found second (or more) time in local file
715 // (c) key from global file now found in local one
716 // which is exactly what we want.
717 else if ( !bLocal || pEntry->IsLocal() ) {
718 wxLogWarning(_("file '%s', line %d: key '%s' was first found at line %d."),
719 buffer.GetName(), n + 1, strKey.c_str(), pEntry->Line());
720
721 }
722 }
723
724 if ( bLocal )
725 pEntry->SetLine(m_linesTail);
726
727 // skip whitespace
728 while ( wxIsspace(*pEnd) )
729 pEnd++;
730
731 wxString value = pEnd;
732 if ( !(GetStyle() & wxCONFIG_USE_NO_ESCAPE_CHARACTERS) )
733 value = FilterInValue(value);
734
735 pEntry->SetValue(value, false);
736 }
737 }
738 }
739 }
740
741 // ----------------------------------------------------------------------------
742 // set/retrieve path
743 // ----------------------------------------------------------------------------
744
745 void wxFileConfig::SetRootPath()
746 {
747 m_strPath.Empty();
748 m_pCurrentGroup = m_pRootGroup;
749 }
750
751 bool
752 wxFileConfig::DoSetPath(const wxString& strPath, bool createMissingComponents)
753 {
754 wxArrayString aParts;
755
756 if ( strPath.empty() ) {
757 SetRootPath();
758 return true;
759 }
760
761 if ( strPath[0] == wxCONFIG_PATH_SEPARATOR ) {
762 // absolute path
763 wxSplitPath(aParts, strPath);
764 }
765 else {
766 // relative path, combine with current one
767 wxString strFullPath = m_strPath;
768 strFullPath << wxCONFIG_PATH_SEPARATOR << strPath;
769 wxSplitPath(aParts, strFullPath);
770 }
771
772 // change current group
773 size_t n;
774 m_pCurrentGroup = m_pRootGroup;
775 for ( n = 0; n < aParts.Count(); n++ ) {
776 wxFileConfigGroup *pNextGroup = m_pCurrentGroup->FindSubgroup(aParts[n]);
777 if ( pNextGroup == NULL )
778 {
779 if ( !createMissingComponents )
780 return false;
781
782 pNextGroup = m_pCurrentGroup->AddSubgroup(aParts[n]);
783 }
784
785 m_pCurrentGroup = pNextGroup;
786 }
787
788 // recombine path parts in one variable
789 m_strPath.Empty();
790 for ( n = 0; n < aParts.Count(); n++ ) {
791 m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n];
792 }
793
794 return true;
795 }
796
797 void wxFileConfig::SetPath(const wxString& strPath)
798 {
799 DoSetPath(strPath, true /* create missing path components */);
800 }
801
802 // ----------------------------------------------------------------------------
803 // enumeration
804 // ----------------------------------------------------------------------------
805
806 bool wxFileConfig::GetFirstGroup(wxString& str, long& lIndex) const
807 {
808 lIndex = 0;
809 return GetNextGroup(str, lIndex);
810 }
811
812 bool wxFileConfig::GetNextGroup (wxString& str, long& lIndex) const
813 {
814 if ( size_t(lIndex) < m_pCurrentGroup->Groups().Count() ) {
815 str = m_pCurrentGroup->Groups()[(size_t)lIndex++]->Name();
816 return true;
817 }
818 else
819 return false;
820 }
821
822 bool wxFileConfig::GetFirstEntry(wxString& str, long& lIndex) const
823 {
824 lIndex = 0;
825 return GetNextEntry(str, lIndex);
826 }
827
828 bool wxFileConfig::GetNextEntry (wxString& str, long& lIndex) const
829 {
830 if ( size_t(lIndex) < m_pCurrentGroup->Entries().Count() ) {
831 str = m_pCurrentGroup->Entries()[(size_t)lIndex++]->Name();
832 return true;
833 }
834 else
835 return false;
836 }
837
838 size_t wxFileConfig::GetNumberOfEntries(bool bRecursive) const
839 {
840 size_t n = m_pCurrentGroup->Entries().Count();
841 if ( bRecursive ) {
842 wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
843 size_t nSubgroups = m_pCurrentGroup->Groups().Count();
844 for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
845 CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
846 n += GetNumberOfEntries(true);
847 CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
848 }
849 }
850
851 return n;
852 }
853
854 size_t wxFileConfig::GetNumberOfGroups(bool bRecursive) const
855 {
856 size_t n = m_pCurrentGroup->Groups().Count();
857 if ( bRecursive ) {
858 wxFileConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
859 size_t nSubgroups = m_pCurrentGroup->Groups().Count();
860 for ( size_t nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
861 CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
862 n += GetNumberOfGroups(true);
863 CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
864 }
865 }
866
867 return n;
868 }
869
870 // ----------------------------------------------------------------------------
871 // tests for existence
872 // ----------------------------------------------------------------------------
873
874 bool wxFileConfig::HasGroup(const wxString& strName) const
875 {
876 // special case: DoSetPath("") does work as it's equivalent to DoSetPath("/")
877 // but there is no group with empty name so treat this separately
878 if ( strName.empty() )
879 return false;
880
881 const wxString pathOld = GetPath();
882
883 wxFileConfig *self = wx_const_cast(wxFileConfig *, this);
884 const bool
885 rc = self->DoSetPath(strName, false /* don't create missing components */);
886
887 self->SetPath(pathOld);
888
889 return rc;
890 }
891
892 bool wxFileConfig::HasEntry(const wxString& strName) const
893 {
894 wxConfigPathChanger path(this, strName);
895
896 wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
897 return pEntry != NULL;
898 }
899
900 // ----------------------------------------------------------------------------
901 // read/write values
902 // ----------------------------------------------------------------------------
903
904 bool wxFileConfig::DoReadString(const wxString& key, wxString* pStr) const
905 {
906 wxConfigPathChanger path(this, key);
907
908 wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
909 if (pEntry == NULL) {
910 return false;
911 }
912
913 *pStr = pEntry->Value();
914
915 return true;
916 }
917
918 bool wxFileConfig::DoReadLong(const wxString& key, long *pl) const
919 {
920 wxString str;
921 if ( !Read(key, &str) )
922 return false;
923
924 // extra spaces shouldn't prevent us from reading numeric values
925 str.Trim();
926
927 return str.ToLong(pl);
928 }
929
930 bool wxFileConfig::DoWriteString(const wxString& key, const wxString& szValue)
931 {
932 wxConfigPathChanger path(this, key);
933 wxString strName = path.Name();
934
935 wxLogTrace( FILECONF_TRACE_MASK,
936 _T(" Writing String '%s' = '%s' to Group '%s'"),
937 strName.c_str(),
938 szValue.c_str(),
939 GetPath().c_str() );
940
941 if ( strName.empty() )
942 {
943 // setting the value of a group is an error
944
945 wxASSERT_MSG( szValue.empty(), wxT("can't set value of a group!") );
946
947 // ... except if it's empty in which case it's a way to force it's creation
948
949 wxLogTrace( FILECONF_TRACE_MASK,
950 _T(" Creating group %s"),
951 m_pCurrentGroup->Name().c_str() );
952
953 SetDirty();
954
955 // this will add a line for this group if it didn't have it before
956
957 (void)m_pCurrentGroup->GetGroupLine();
958 }
959 else
960 {
961 // writing an entry check that the name is reasonable
962 if ( strName[0u] == wxCONFIG_IMMUTABLE_PREFIX )
963 {
964 wxLogError( _("Config entry name cannot start with '%c'."),
965 wxCONFIG_IMMUTABLE_PREFIX);
966 return false;
967 }
968
969 wxFileConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strName);
970
971 if ( pEntry == 0 )
972 {
973 wxLogTrace( FILECONF_TRACE_MASK,
974 _T(" Adding Entry %s"),
975 strName.c_str() );
976 pEntry = m_pCurrentGroup->AddEntry(strName);
977 }
978
979 wxLogTrace( FILECONF_TRACE_MASK,
980 _T(" Setting value %s"),
981 szValue.c_str() );
982 pEntry->SetValue(szValue);
983
984 SetDirty();
985 }
986
987 return true;
988 }
989
990 bool wxFileConfig::DoWriteLong(const wxString& key, long lValue)
991 {
992 return Write(key, wxString::Format(_T("%ld"), lValue));
993 }
994
995 bool wxFileConfig::Flush(bool /* bCurrentOnly */)
996 {
997 if ( !IsDirty() || !m_strLocalFile )
998 return true;
999
1000 // set the umask if needed
1001 wxCHANGE_UMASK(m_umask);
1002
1003 wxTempFile file(m_strLocalFile);
1004
1005 if ( !file.IsOpened() )
1006 {
1007 wxLogError(_("can't open user configuration file."));
1008 return false;
1009 }
1010
1011 // write all strings to file
1012 for ( wxFileConfigLineList *p = m_linesHead; p != NULL; p = p->Next() )
1013 {
1014 wxString line = p->Text();
1015 line += wxTextFile::GetEOL();
1016 if ( !file.Write(line, *m_conv) )
1017 {
1018 wxLogError(_("can't write user configuration file."));
1019 return false;
1020 }
1021 }
1022
1023 if ( !file.Commit() )
1024 {
1025 wxLogError(_("Failed to update user configuration file."));
1026
1027 return false;
1028 }
1029
1030 ResetDirty();
1031
1032 #if defined(__WXMAC__)
1033 wxFileName(m_strLocalFile).MacSetTypeAndCreator('TEXT', 'ttxt');
1034 #endif // __WXMAC__
1035
1036 return true;
1037 }
1038
1039 #if wxUSE_STREAMS
1040
1041 bool wxFileConfig::Save(wxOutputStream& os, const wxMBConv& conv)
1042 {
1043 // save unconditionally, even if not dirty
1044 for ( wxFileConfigLineList *p = m_linesHead; p != NULL; p = p->Next() )
1045 {
1046 wxString line = p->Text();
1047 line += wxTextFile::GetEOL();
1048
1049 wxCharBuffer buf(line.mb_str(conv));
1050 if ( !os.Write(buf, strlen(buf)) )
1051 {
1052 wxLogError(_("Error saving user configuration data."));
1053
1054 return false;
1055 }
1056 }
1057
1058 ResetDirty();
1059
1060 return true;
1061 }
1062
1063 #endif // wxUSE_STREAMS
1064
1065 // ----------------------------------------------------------------------------
1066 // renaming groups/entries
1067 // ----------------------------------------------------------------------------
1068
1069 bool wxFileConfig::RenameEntry(const wxString& oldName,
1070 const wxString& newName)
1071 {
1072 wxASSERT_MSG( !wxStrchr(oldName, wxCONFIG_PATH_SEPARATOR),
1073 _T("RenameEntry(): paths are not supported") );
1074
1075 // check that the entry exists
1076 wxFileConfigEntry *oldEntry = m_pCurrentGroup->FindEntry(oldName);
1077 if ( !oldEntry )
1078 return false;
1079
1080 // check that the new entry doesn't already exist
1081 if ( m_pCurrentGroup->FindEntry(newName) )
1082 return false;
1083
1084 // delete the old entry, create the new one
1085 wxString value = oldEntry->Value();
1086 if ( !m_pCurrentGroup->DeleteEntry(oldName) )
1087 return false;
1088
1089 SetDirty();
1090
1091 wxFileConfigEntry *newEntry = m_pCurrentGroup->AddEntry(newName);
1092 newEntry->SetValue(value);
1093
1094 return true;
1095 }
1096
1097 bool wxFileConfig::RenameGroup(const wxString& oldName,
1098 const wxString& newName)
1099 {
1100 // check that the group exists
1101 wxFileConfigGroup *group = m_pCurrentGroup->FindSubgroup(oldName);
1102 if ( !group )
1103 return false;
1104
1105 // check that the new group doesn't already exist
1106 if ( m_pCurrentGroup->FindSubgroup(newName) )
1107 return false;
1108
1109 group->Rename(newName);
1110
1111 SetDirty();
1112
1113 return true;
1114 }
1115
1116 // ----------------------------------------------------------------------------
1117 // delete groups/entries
1118 // ----------------------------------------------------------------------------
1119
1120 bool wxFileConfig::DeleteEntry(const wxString& key, bool bGroupIfEmptyAlso)
1121 {
1122 wxConfigPathChanger path(this, key);
1123
1124 if ( !m_pCurrentGroup->DeleteEntry(path.Name()) )
1125 return false;
1126
1127 SetDirty();
1128
1129 if ( bGroupIfEmptyAlso && m_pCurrentGroup->IsEmpty() ) {
1130 if ( m_pCurrentGroup != m_pRootGroup ) {
1131 wxFileConfigGroup *pGroup = m_pCurrentGroup;
1132 SetPath(wxT("..")); // changes m_pCurrentGroup!
1133 m_pCurrentGroup->DeleteSubgroupByName(pGroup->Name());
1134 }
1135 //else: never delete the root group
1136 }
1137
1138 return true;
1139 }
1140
1141 bool wxFileConfig::DeleteGroup(const wxString& key)
1142 {
1143 wxConfigPathChanger path(this, key);
1144
1145 if ( !m_pCurrentGroup->DeleteSubgroupByName(path.Name()) )
1146 return false;
1147
1148 path.UpdateIfDeleted();
1149
1150 SetDirty();
1151
1152 return true;
1153 }
1154
1155 bool wxFileConfig::DeleteAll()
1156 {
1157 CleanUp();
1158
1159 if ( !m_strLocalFile.empty() )
1160 {
1161 if ( wxFile::Exists(m_strLocalFile) && wxRemove(m_strLocalFile) == -1 )
1162 {
1163 wxLogSysError(_("can't delete user configuration file '%s'"),
1164 m_strLocalFile.c_str());
1165 return false;
1166 }
1167 }
1168
1169 Init();
1170
1171 return true;
1172 }
1173
1174 // ----------------------------------------------------------------------------
1175 // linked list functions
1176 // ----------------------------------------------------------------------------
1177
1178 // append a new line to the end of the list
1179
1180 wxFileConfigLineList *wxFileConfig::LineListAppend(const wxString& str)
1181 {
1182 wxLogTrace( FILECONF_TRACE_MASK,
1183 _T(" ** Adding Line '%s'"),
1184 str.c_str() );
1185 wxLogTrace( FILECONF_TRACE_MASK,
1186 _T(" head: %s"),
1187 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
1188 wxLogTrace( FILECONF_TRACE_MASK,
1189 _T(" tail: %s"),
1190 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
1191
1192 wxFileConfigLineList *pLine = new wxFileConfigLineList(str);
1193
1194 if ( m_linesTail == NULL )
1195 {
1196 // list is empty
1197 m_linesHead = pLine;
1198 }
1199 else
1200 {
1201 // adjust pointers
1202 m_linesTail->SetNext(pLine);
1203 pLine->SetPrev(m_linesTail);
1204 }
1205
1206 m_linesTail = pLine;
1207
1208 wxLogTrace( FILECONF_TRACE_MASK,
1209 _T(" head: %s"),
1210 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
1211 wxLogTrace( FILECONF_TRACE_MASK,
1212 _T(" tail: %s"),
1213 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
1214
1215 return m_linesTail;
1216 }
1217
1218 // insert a new line after the given one or in the very beginning if !pLine
1219 wxFileConfigLineList *wxFileConfig::LineListInsert(const wxString& str,
1220 wxFileConfigLineList *pLine)
1221 {
1222 wxLogTrace( FILECONF_TRACE_MASK,
1223 _T(" ** Inserting Line '%s' after '%s'"),
1224 str.c_str(),
1225 ((pLine) ? pLine->Text().c_str() : wxEmptyString) );
1226 wxLogTrace( FILECONF_TRACE_MASK,
1227 _T(" head: %s"),
1228 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
1229 wxLogTrace( FILECONF_TRACE_MASK,
1230 _T(" tail: %s"),
1231 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
1232
1233 if ( pLine == m_linesTail )
1234 return LineListAppend(str);
1235
1236 wxFileConfigLineList *pNewLine = new wxFileConfigLineList(str);
1237 if ( pLine == NULL )
1238 {
1239 // prepend to the list
1240 pNewLine->SetNext(m_linesHead);
1241 m_linesHead->SetPrev(pNewLine);
1242 m_linesHead = pNewLine;
1243 }
1244 else
1245 {
1246 // insert before pLine
1247 wxFileConfigLineList *pNext = pLine->Next();
1248 pNewLine->SetNext(pNext);
1249 pNewLine->SetPrev(pLine);
1250 pNext->SetPrev(pNewLine);
1251 pLine->SetNext(pNewLine);
1252 }
1253
1254 wxLogTrace( FILECONF_TRACE_MASK,
1255 _T(" head: %s"),
1256 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
1257 wxLogTrace( FILECONF_TRACE_MASK,
1258 _T(" tail: %s"),
1259 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
1260
1261 return pNewLine;
1262 }
1263
1264 void wxFileConfig::LineListRemove(wxFileConfigLineList *pLine)
1265 {
1266 wxLogTrace( FILECONF_TRACE_MASK,
1267 _T(" ** Removing Line '%s'"),
1268 pLine->Text().c_str() );
1269 wxLogTrace( FILECONF_TRACE_MASK,
1270 _T(" head: %s"),
1271 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
1272 wxLogTrace( FILECONF_TRACE_MASK,
1273 _T(" tail: %s"),
1274 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
1275
1276 wxFileConfigLineList *pPrev = pLine->Prev(),
1277 *pNext = pLine->Next();
1278
1279 // first entry?
1280
1281 if ( pPrev == NULL )
1282 m_linesHead = pNext;
1283 else
1284 pPrev->SetNext(pNext);
1285
1286 // last entry?
1287
1288 if ( pNext == NULL )
1289 m_linesTail = pPrev;
1290 else
1291 pNext->SetPrev(pPrev);
1292
1293 if ( m_pRootGroup->GetGroupLine() == pLine )
1294 m_pRootGroup->SetLine(m_linesHead);
1295
1296 wxLogTrace( FILECONF_TRACE_MASK,
1297 _T(" head: %s"),
1298 ((m_linesHead) ? m_linesHead->Text().c_str() : wxEmptyString) );
1299 wxLogTrace( FILECONF_TRACE_MASK,
1300 _T(" tail: %s"),
1301 ((m_linesTail) ? m_linesTail->Text().c_str() : wxEmptyString) );
1302
1303 delete pLine;
1304 }
1305
1306 bool wxFileConfig::LineListIsEmpty()
1307 {
1308 return m_linesHead == NULL;
1309 }
1310
1311 // ============================================================================
1312 // wxFileConfig::wxFileConfigGroup
1313 // ============================================================================
1314
1315 // ----------------------------------------------------------------------------
1316 // ctor/dtor
1317 // ----------------------------------------------------------------------------
1318
1319 // ctor
1320 wxFileConfigGroup::wxFileConfigGroup(wxFileConfigGroup *pParent,
1321 const wxString& strName,
1322 wxFileConfig *pConfig)
1323 : m_aEntries(CompareEntries),
1324 m_aSubgroups(CompareGroups),
1325 m_strName(strName)
1326 {
1327 m_pConfig = pConfig;
1328 m_pParent = pParent;
1329 m_pLine = NULL;
1330
1331 m_pLastEntry = NULL;
1332 m_pLastGroup = NULL;
1333 }
1334
1335 // dtor deletes all children
1336 wxFileConfigGroup::~wxFileConfigGroup()
1337 {
1338 // entries
1339 size_t n, nCount = m_aEntries.Count();
1340 for ( n = 0; n < nCount; n++ )
1341 delete m_aEntries[n];
1342
1343 // subgroups
1344 nCount = m_aSubgroups.Count();
1345 for ( n = 0; n < nCount; n++ )
1346 delete m_aSubgroups[n];
1347 }
1348
1349 // ----------------------------------------------------------------------------
1350 // line
1351 // ----------------------------------------------------------------------------
1352
1353 void wxFileConfigGroup::SetLine(wxFileConfigLineList *pLine)
1354 {
1355 // for a normal (i.e. not root) group this method shouldn't be called twice
1356 // unless we are resetting the line
1357 wxASSERT_MSG( !m_pParent || !m_pLine || !pLine,
1358 _T("changing line for a non-root group?") );
1359
1360 m_pLine = pLine;
1361 }
1362
1363 /*
1364 This is a bit complicated, so let me explain it in details. All lines that
1365 were read from the local file (the only one we will ever modify) are stored
1366 in a (doubly) linked list. Our problem is to know at which position in this
1367 list should we insert the new entries/subgroups. To solve it we keep three
1368 variables for each group: m_pLine, m_pLastEntry and m_pLastGroup.
1369
1370 m_pLine points to the line containing "[group_name]"
1371 m_pLastEntry points to the last entry of this group in the local file.
1372 m_pLastGroup subgroup
1373
1374 Initially, they're NULL all three. When the group (an entry/subgroup) is read
1375 from the local file, the corresponding variable is set. However, if the group
1376 was read from the global file and then modified or created by the application
1377 these variables are still NULL and we need to create the corresponding lines.
1378 See the following functions (and comments preceding them) for the details of
1379 how we do it.
1380
1381 Also, when our last entry/group are deleted we need to find the new last
1382 element - the code in DeleteEntry/Subgroup does this by backtracking the list
1383 of lines until it either founds an entry/subgroup (and this is the new last
1384 element) or the m_pLine of the group, in which case there are no more entries
1385 (or subgroups) left and m_pLast<element> becomes NULL.
1386
1387 NB: This last problem could be avoided for entries if we added new entries
1388 immediately after m_pLine, but in this case the entries would appear
1389 backwards in the config file (OTOH, it's not that important) and as we
1390 would still need to do it for the subgroups the code wouldn't have been
1391 significantly less complicated.
1392 */
1393
1394 // Return the line which contains "[our name]". If we're still not in the list,
1395 // add our line to it immediately after the last line of our parent group if we
1396 // have it or in the very beginning if we're the root group.
1397 wxFileConfigLineList *wxFileConfigGroup::GetGroupLine()
1398 {
1399 wxLogTrace( FILECONF_TRACE_MASK,
1400 _T(" GetGroupLine() for Group '%s'"),
1401 Name().c_str() );
1402
1403 if ( !m_pLine )
1404 {
1405 wxLogTrace( FILECONF_TRACE_MASK,
1406 _T(" Getting Line item pointer") );
1407
1408 wxFileConfigGroup *pParent = Parent();
1409
1410 // this group wasn't present in local config file, add it now
1411 if ( pParent )
1412 {
1413 wxLogTrace( FILECONF_TRACE_MASK,
1414 _T(" checking parent '%s'"),
1415 pParent->Name().c_str() );
1416
1417 wxString strFullName;
1418
1419 // add 1 to the name because we don't want to start with '/'
1420 strFullName << wxT("[")
1421 << FilterOutEntryName(GetFullName().c_str() + 1)
1422 << wxT("]");
1423 m_pLine = m_pConfig->LineListInsert(strFullName,
1424 pParent->GetLastGroupLine());
1425 pParent->SetLastGroup(this); // we're surely after all the others
1426 }
1427 //else: this is the root group and so we return NULL because we don't
1428 // have any group line
1429 }
1430
1431 return m_pLine;
1432 }
1433
1434 // Return the last line belonging to the subgroups of this group (after which
1435 // we can add a new subgroup), if we don't have any subgroups or entries our
1436 // last line is the group line (m_pLine) itself.
1437 wxFileConfigLineList *wxFileConfigGroup::GetLastGroupLine()
1438 {
1439 // if we have any subgroups, our last line is the last line of the last
1440 // subgroup
1441 if ( m_pLastGroup )
1442 {
1443 wxFileConfigLineList *pLine = m_pLastGroup->GetLastGroupLine();
1444
1445 wxASSERT_MSG( pLine, _T("last group must have !NULL associated line") );
1446
1447 return pLine;
1448 }
1449
1450 // no subgroups, so the last line is the line of thelast entry (if any)
1451 return GetLastEntryLine();
1452 }
1453
1454 // return the last line belonging to the entries of this group (after which
1455 // we can add a new entry), if we don't have any entries we will add the new
1456 // one immediately after the group line itself.
1457 wxFileConfigLineList *wxFileConfigGroup::GetLastEntryLine()
1458 {
1459 wxLogTrace( FILECONF_TRACE_MASK,
1460 _T(" GetLastEntryLine() for Group '%s'"),
1461 Name().c_str() );
1462
1463 if ( m_pLastEntry )
1464 {
1465 wxFileConfigLineList *pLine = m_pLastEntry->GetLine();
1466
1467 wxASSERT_MSG( pLine, _T("last entry must have !NULL associated line") );
1468
1469 return pLine;
1470 }
1471
1472 // no entries: insert after the group header, if any
1473 return GetGroupLine();
1474 }
1475
1476 void wxFileConfigGroup::SetLastEntry(wxFileConfigEntry *pEntry)
1477 {
1478 m_pLastEntry = pEntry;
1479
1480 if ( !m_pLine )
1481 {
1482 // the only situation in which a group without its own line can have
1483 // an entry is when the first entry is added to the initially empty
1484 // root pseudo-group
1485 wxASSERT_MSG( !m_pParent, _T("unexpected for non root group") );
1486
1487 // let the group know that it does have a line in the file now
1488 m_pLine = pEntry->GetLine();
1489 }
1490 }
1491
1492 // ----------------------------------------------------------------------------
1493 // group name
1494 // ----------------------------------------------------------------------------
1495
1496 void wxFileConfigGroup::UpdateGroupAndSubgroupsLines()
1497 {
1498 // update the line of this group
1499 wxFileConfigLineList *line = GetGroupLine();
1500 wxCHECK_RET( line, _T("a non root group must have a corresponding line!") );
1501
1502 // +1: skip the leading '/'
1503 line->SetText(wxString::Format(_T("[%s]"), GetFullName().c_str() + 1));
1504
1505
1506 // also update all subgroups as they have this groups name in their lines
1507 const size_t nCount = m_aSubgroups.Count();
1508 for ( size_t n = 0; n < nCount; n++ )
1509 {
1510 m_aSubgroups[n]->UpdateGroupAndSubgroupsLines();
1511 }
1512 }
1513
1514 void wxFileConfigGroup::Rename(const wxString& newName)
1515 {
1516 wxCHECK_RET( m_pParent, _T("the root group can't be renamed") );
1517
1518 m_strName = newName;
1519
1520 // update the group lines recursively
1521 UpdateGroupAndSubgroupsLines();
1522 }
1523
1524 wxString wxFileConfigGroup::GetFullName() const
1525 {
1526 wxString fullname;
1527 if ( Parent() )
1528 fullname = Parent()->GetFullName() + wxCONFIG_PATH_SEPARATOR + Name();
1529
1530 return fullname;
1531 }
1532
1533 // ----------------------------------------------------------------------------
1534 // find an item
1535 // ----------------------------------------------------------------------------
1536
1537 // use binary search because the array is sorted
1538 wxFileConfigEntry *
1539 wxFileConfigGroup::FindEntry(const wxChar *szName) const
1540 {
1541 size_t i,
1542 lo = 0,
1543 hi = m_aEntries.Count();
1544 int res;
1545 wxFileConfigEntry *pEntry;
1546
1547 while ( lo < hi ) {
1548 i = (lo + hi)/2;
1549 pEntry = m_aEntries[i];
1550
1551 #if wxCONFIG_CASE_SENSITIVE
1552 res = wxStrcmp(pEntry->Name(), szName);
1553 #else
1554 res = wxStricmp(pEntry->Name(), szName);
1555 #endif
1556
1557 if ( res > 0 )
1558 hi = i;
1559 else if ( res < 0 )
1560 lo = i + 1;
1561 else
1562 return pEntry;
1563 }
1564
1565 return NULL;
1566 }
1567
1568 wxFileConfigGroup *
1569 wxFileConfigGroup::FindSubgroup(const wxChar *szName) const
1570 {
1571 size_t i,
1572 lo = 0,
1573 hi = m_aSubgroups.Count();
1574 int res;
1575 wxFileConfigGroup *pGroup;
1576
1577 while ( lo < hi ) {
1578 i = (lo + hi)/2;
1579 pGroup = m_aSubgroups[i];
1580
1581 #if wxCONFIG_CASE_SENSITIVE
1582 res = wxStrcmp(pGroup->Name(), szName);
1583 #else
1584 res = wxStricmp(pGroup->Name(), szName);
1585 #endif
1586
1587 if ( res > 0 )
1588 hi = i;
1589 else if ( res < 0 )
1590 lo = i + 1;
1591 else
1592 return pGroup;
1593 }
1594
1595 return NULL;
1596 }
1597
1598 // ----------------------------------------------------------------------------
1599 // create a new item
1600 // ----------------------------------------------------------------------------
1601
1602 // create a new entry and add it to the current group
1603 wxFileConfigEntry *wxFileConfigGroup::AddEntry(const wxString& strName, int nLine)
1604 {
1605 wxASSERT( FindEntry(strName) == 0 );
1606
1607 wxFileConfigEntry *pEntry = new wxFileConfigEntry(this, strName, nLine);
1608
1609 m_aEntries.Add(pEntry);
1610 return pEntry;
1611 }
1612
1613 // create a new group and add it to the current group
1614 wxFileConfigGroup *wxFileConfigGroup::AddSubgroup(const wxString& strName)
1615 {
1616 wxASSERT( FindSubgroup(strName) == 0 );
1617
1618 wxFileConfigGroup *pGroup = new wxFileConfigGroup(this, strName, m_pConfig);
1619
1620 m_aSubgroups.Add(pGroup);
1621 return pGroup;
1622 }
1623
1624 // ----------------------------------------------------------------------------
1625 // delete an item
1626 // ----------------------------------------------------------------------------
1627
1628 /*
1629 The delete operations are _very_ slow if we delete the last item of this
1630 group (see comments before GetXXXLineXXX functions for more details),
1631 so it's much better to start with the first entry/group if we want to
1632 delete several of them.
1633 */
1634
1635 bool wxFileConfigGroup::DeleteSubgroupByName(const wxChar *szName)
1636 {
1637 wxFileConfigGroup * const pGroup = FindSubgroup(szName);
1638
1639 return pGroup ? DeleteSubgroup(pGroup) : false;
1640 }
1641
1642 // Delete the subgroup and remove all references to it from
1643 // other data structures.
1644 bool wxFileConfigGroup::DeleteSubgroup(wxFileConfigGroup *pGroup)
1645 {
1646 wxCHECK_MSG( pGroup, false, _T("deleting non existing group?") );
1647
1648 wxLogTrace( FILECONF_TRACE_MASK,
1649 _T("Deleting group '%s' from '%s'"),
1650 pGroup->Name().c_str(),
1651 Name().c_str() );
1652
1653 wxLogTrace( FILECONF_TRACE_MASK,
1654 _T(" (m_pLine) = prev: %p, this %p, next %p"),
1655 m_pLine ? m_pLine->Prev() : NULL,
1656 m_pLine,
1657 m_pLine ? m_pLine->Next() : NULL );
1658 wxLogTrace( FILECONF_TRACE_MASK,
1659 _T(" text: '%s'"),
1660 m_pLine ? m_pLine->Text().c_str() : wxEmptyString );
1661
1662 // delete all entries...
1663 size_t nCount = pGroup->m_aEntries.Count();
1664
1665 wxLogTrace(FILECONF_TRACE_MASK,
1666 _T("Removing %lu entries"), (unsigned long)nCount );
1667
1668 for ( size_t nEntry = 0; nEntry < nCount; nEntry++ )
1669 {
1670 wxFileConfigLineList *pLine = pGroup->m_aEntries[nEntry]->GetLine();
1671
1672 if ( pLine )
1673 {
1674 wxLogTrace( FILECONF_TRACE_MASK,
1675 _T(" '%s'"),
1676 pLine->Text().c_str() );
1677 m_pConfig->LineListRemove(pLine);
1678 }
1679 }
1680
1681 // ...and subgroups of this subgroup
1682 nCount = pGroup->m_aSubgroups.Count();
1683
1684 wxLogTrace( FILECONF_TRACE_MASK,
1685 _T("Removing %lu subgroups"), (unsigned long)nCount );
1686
1687 for ( size_t nGroup = 0; nGroup < nCount; nGroup++ )
1688 {
1689 pGroup->DeleteSubgroup(pGroup->m_aSubgroups[0]);
1690 }
1691
1692 // and then finally the group itself
1693 wxFileConfigLineList *pLine = pGroup->m_pLine;
1694 if ( pLine )
1695 {
1696 wxLogTrace( FILECONF_TRACE_MASK,
1697 _T(" Removing line for group '%s' : '%s'"),
1698 pGroup->Name().c_str(),
1699 pLine->Text().c_str() );
1700 wxLogTrace( FILECONF_TRACE_MASK,
1701 _T(" Removing from group '%s' : '%s'"),
1702 Name().c_str(),
1703 ((m_pLine) ? m_pLine->Text().c_str() : wxEmptyString) );
1704
1705 // notice that we may do this test inside the previous "if"
1706 // because the last entry's line is surely !NULL
1707 if ( pGroup == m_pLastGroup )
1708 {
1709 wxLogTrace( FILECONF_TRACE_MASK,
1710 _T(" Removing last group") );
1711
1712 // our last entry is being deleted, so find the last one which
1713 // stays by going back until we find a subgroup or reach the
1714 // group line
1715 const size_t nSubgroups = m_aSubgroups.Count();
1716
1717 m_pLastGroup = NULL;
1718 for ( wxFileConfigLineList *pl = pLine->Prev();
1719 pl && pl != m_pLine && !m_pLastGroup;
1720 pl = pl->Prev() )
1721 {
1722 // does this line belong to our subgroup?
1723 for ( size_t n = 0; n < nSubgroups; n++ )
1724 {
1725 // do _not_ call GetGroupLine! we don't want to add it to
1726 // the local file if it's not already there
1727 if ( m_aSubgroups[n]->m_pLine == pl )
1728 {
1729 m_pLastGroup = m_aSubgroups[n];
1730 break;
1731 }
1732 }
1733 }
1734 }
1735
1736 m_pConfig->LineListRemove(pLine);
1737 }
1738 else
1739 {
1740 wxLogTrace( FILECONF_TRACE_MASK,
1741 _T(" No line entry for Group '%s'?"),
1742 pGroup->Name().c_str() );
1743 }
1744
1745 m_aSubgroups.Remove(pGroup);
1746 delete pGroup;
1747
1748 return true;
1749 }
1750
1751 bool wxFileConfigGroup::DeleteEntry(const wxChar *szName)
1752 {
1753 wxFileConfigEntry *pEntry = FindEntry(szName);
1754 if ( !pEntry )
1755 {
1756 // entry doesn't exist, nothing to do
1757 return false;
1758 }
1759
1760 wxFileConfigLineList *pLine = pEntry->GetLine();
1761 if ( pLine != NULL ) {
1762 // notice that we may do this test inside the previous "if" because the
1763 // last entry's line is surely !NULL
1764 if ( pEntry == m_pLastEntry ) {
1765 // our last entry is being deleted - find the last one which stays
1766 wxASSERT( m_pLine != NULL ); // if we have an entry with !NULL pLine...
1767
1768 // go back until we find another entry or reach the group's line
1769 wxFileConfigEntry *pNewLast = NULL;
1770 size_t n, nEntries = m_aEntries.Count();
1771 wxFileConfigLineList *pl;
1772 for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() ) {
1773 // is it our subgroup?
1774 for ( n = 0; (pNewLast == NULL) && (n < nEntries); n++ ) {
1775 if ( m_aEntries[n]->GetLine() == m_pLine )
1776 pNewLast = m_aEntries[n];
1777 }
1778
1779 if ( pNewLast != NULL ) // found?
1780 break;
1781 }
1782
1783 if ( pl == m_pLine ) {
1784 wxASSERT( !pNewLast ); // how comes it has the same line as we?
1785
1786 // we've reached the group line without finding any subgroups
1787 m_pLastEntry = NULL;
1788 }
1789 else
1790 m_pLastEntry = pNewLast;
1791 }
1792
1793 m_pConfig->LineListRemove(pLine);
1794 }
1795
1796 m_aEntries.Remove(pEntry);
1797 delete pEntry;
1798
1799 return true;
1800 }
1801
1802 // ============================================================================
1803 // wxFileConfig::wxFileConfigEntry
1804 // ============================================================================
1805
1806 // ----------------------------------------------------------------------------
1807 // ctor
1808 // ----------------------------------------------------------------------------
1809 wxFileConfigEntry::wxFileConfigEntry(wxFileConfigGroup *pParent,
1810 const wxString& strName,
1811 int nLine)
1812 : m_strName(strName)
1813 {
1814 wxASSERT( !strName.empty() );
1815
1816 m_pParent = pParent;
1817 m_nLine = nLine;
1818 m_pLine = NULL;
1819
1820 m_bHasValue = false;
1821
1822 m_bImmutable = strName[0] == wxCONFIG_IMMUTABLE_PREFIX;
1823 if ( m_bImmutable )
1824 m_strName.erase(0, 1); // remove first character
1825 }
1826
1827 // ----------------------------------------------------------------------------
1828 // set value
1829 // ----------------------------------------------------------------------------
1830
1831 void wxFileConfigEntry::SetLine(wxFileConfigLineList *pLine)
1832 {
1833 if ( m_pLine != NULL ) {
1834 wxLogWarning(_("entry '%s' appears more than once in group '%s'"),
1835 Name().c_str(), m_pParent->GetFullName().c_str());
1836 }
1837
1838 m_pLine = pLine;
1839 Group()->SetLastEntry(this);
1840 }
1841
1842 // second parameter is false if we read the value from file and prevents the
1843 // entry from being marked as 'dirty'
1844 void wxFileConfigEntry::SetValue(const wxString& strValue, bool bUser)
1845 {
1846 if ( bUser && IsImmutable() )
1847 {
1848 wxLogWarning( _("attempt to change immutable key '%s' ignored."),
1849 Name().c_str());
1850 return;
1851 }
1852
1853 // do nothing if it's the same value: but don't test for it if m_bHasValue
1854 // hadn't been set yet or we'd never write empty values to the file
1855 if ( m_bHasValue && strValue == m_strValue )
1856 return;
1857
1858 m_bHasValue = true;
1859 m_strValue = strValue;
1860
1861 if ( bUser )
1862 {
1863 wxString strValFiltered;
1864
1865 if ( Group()->Config()->GetStyle() & wxCONFIG_USE_NO_ESCAPE_CHARACTERS )
1866 {
1867 strValFiltered = strValue;
1868 }
1869 else {
1870 strValFiltered = FilterOutValue(strValue);
1871 }
1872
1873 wxString strLine;
1874 strLine << FilterOutEntryName(m_strName) << wxT('=') << strValFiltered;
1875
1876 if ( m_pLine )
1877 {
1878 // entry was read from the local config file, just modify the line
1879 m_pLine->SetText(strLine);
1880 }
1881 else // this entry didn't exist in the local file
1882 {
1883 // add a new line to the file: note that line returned by
1884 // GetLastEntryLine() may be NULL if we're in the root group and it
1885 // doesn't have any entries yet, but this is ok as passing NULL
1886 // line to LineListInsert() means to prepend new line to the list
1887 wxFileConfigLineList *line = Group()->GetLastEntryLine();
1888 m_pLine = Group()->Config()->LineListInsert(strLine, line);
1889
1890 Group()->SetLastEntry(this);
1891 }
1892 }
1893 }
1894
1895 // ============================================================================
1896 // global functions
1897 // ============================================================================
1898
1899 // ----------------------------------------------------------------------------
1900 // compare functions for array sorting
1901 // ----------------------------------------------------------------------------
1902
1903 int CompareEntries(wxFileConfigEntry *p1, wxFileConfigEntry *p2)
1904 {
1905 #if wxCONFIG_CASE_SENSITIVE
1906 return wxStrcmp(p1->Name(), p2->Name());
1907 #else
1908 return wxStricmp(p1->Name(), p2->Name());
1909 #endif
1910 }
1911
1912 int CompareGroups(wxFileConfigGroup *p1, wxFileConfigGroup *p2)
1913 {
1914 #if wxCONFIG_CASE_SENSITIVE
1915 return wxStrcmp(p1->Name(), p2->Name());
1916 #else
1917 return wxStricmp(p1->Name(), p2->Name());
1918 #endif
1919 }
1920
1921 // ----------------------------------------------------------------------------
1922 // filter functions
1923 // ----------------------------------------------------------------------------
1924
1925 // undo FilterOutValue
1926 static wxString FilterInValue(const wxString& str)
1927 {
1928 wxString strResult;
1929 strResult.Alloc(str.Len());
1930
1931 bool bQuoted = !str.empty() && str[0] == '"';
1932
1933 for ( size_t n = bQuoted ? 1 : 0; n < str.Len(); n++ ) {
1934 if ( str[n] == wxT('\\') ) {
1935 switch ( str[++n] ) {
1936 case wxT('n'):
1937 strResult += wxT('\n');
1938 break;
1939
1940 case wxT('r'):
1941 strResult += wxT('\r');
1942 break;
1943
1944 case wxT('t'):
1945 strResult += wxT('\t');
1946 break;
1947
1948 case wxT('\\'):
1949 strResult += wxT('\\');
1950 break;
1951
1952 case wxT('"'):
1953 strResult += wxT('"');
1954 break;
1955 }
1956 }
1957 else {
1958 if ( str[n] != wxT('"') || !bQuoted )
1959 strResult += str[n];
1960 else if ( n != str.Len() - 1 ) {
1961 wxLogWarning(_("unexpected \" at position %d in '%s'."),
1962 n, str.c_str());
1963 }
1964 //else: it's the last quote of a quoted string, ok
1965 }
1966 }
1967
1968 return strResult;
1969 }
1970
1971 // quote the string before writing it to file
1972 static wxString FilterOutValue(const wxString& str)
1973 {
1974 if ( !str )
1975 return str;
1976
1977 wxString strResult;
1978 strResult.Alloc(str.Len());
1979
1980 // quoting is necessary to preserve spaces in the beginning of the string
1981 bool bQuote = wxIsspace(str[0]) || str[0] == wxT('"');
1982
1983 if ( bQuote )
1984 strResult += wxT('"');
1985
1986 wxChar c;
1987 for ( size_t n = 0; n < str.Len(); n++ ) {
1988 switch ( str[n] ) {
1989 case wxT('\n'):
1990 c = wxT('n');
1991 break;
1992
1993 case wxT('\r'):
1994 c = wxT('r');
1995 break;
1996
1997 case wxT('\t'):
1998 c = wxT('t');
1999 break;
2000
2001 case wxT('\\'):
2002 c = wxT('\\');
2003 break;
2004
2005 case wxT('"'):
2006 if ( bQuote ) {
2007 c = wxT('"');
2008 break;
2009 }
2010 //else: fall through
2011
2012 default:
2013 strResult += str[n];
2014 continue; // nothing special to do
2015 }
2016
2017 // we get here only for special characters
2018 strResult << wxT('\\') << c;
2019 }
2020
2021 if ( bQuote )
2022 strResult += wxT('"');
2023
2024 return strResult;
2025 }
2026
2027 // undo FilterOutEntryName
2028 static wxString FilterInEntryName(const wxString& str)
2029 {
2030 wxString strResult;
2031 strResult.Alloc(str.Len());
2032
2033 for ( const wxChar *pc = str.c_str(); *pc != '\0'; pc++ ) {
2034 if ( *pc == wxT('\\') ) {
2035 // we need to test it here or we'd skip past the NUL in the loop line
2036 if ( *++pc == _T('\0') )
2037 break;
2038 }
2039
2040 strResult += *pc;
2041 }
2042
2043 return strResult;
2044 }
2045
2046 // sanitize entry or group name: insert '\\' before any special characters
2047 static wxString FilterOutEntryName(const wxString& str)
2048 {
2049 wxString strResult;
2050 strResult.Alloc(str.Len());
2051
2052 for ( const wxChar *pc = str.c_str(); *pc != wxT('\0'); pc++ ) {
2053 const wxChar c = *pc;
2054
2055 // we explicitly allow some of "safe" chars and 8bit ASCII characters
2056 // which will probably never have special meaning and with which we can't
2057 // use isalnum() anyhow (in ASCII built, in Unicode it's just fine)
2058 //
2059 // NB: note that wxCONFIG_IMMUTABLE_PREFIX and wxCONFIG_PATH_SEPARATOR
2060 // should *not* be quoted
2061 if (
2062 #if !wxUSE_UNICODE
2063 ((unsigned char)c < 127) &&
2064 #endif // ANSI
2065 !wxIsalnum(c) && !wxStrchr(wxT("@_/-!.*%"), c) )
2066 {
2067 strResult += wxT('\\');
2068 }
2069
2070 strResult += c;
2071 }
2072
2073 return strResult;
2074 }
2075
2076 // we can't put ?: in the ctor initializer list because it confuses some
2077 // broken compilers (Borland C++)
2078 static wxString GetAppName(const wxString& appName)
2079 {
2080 if ( !appName && wxTheApp )
2081 return wxTheApp->GetAppName();
2082 else
2083 return appName;
2084 }
2085
2086 #endif // wxUSE_CONFIG
wxWidgets (Impactor)