///////////////////////////////////////////////////////////////////////////////
-// Name: config.cpp
-// Purpose: implementation of wxConfig class
+// Name: src/common/config.cpp
+// Purpose: implementation of wxConfigBase class
// Author: Vadim Zeitlin
-// Modified by:
+// Modified by:
// Created: 07.04.98
// RCS-ID: $Id$
-// Copyright: (c) 1997 Karsten Ballüder Ballueder@usa.net
+// Copyright: (c) 1997 Karsten Ballueder Ballueder@usa.net
// Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-// ============================================================================
+// ----------------------------------------------------------------------------
// headers
-// ============================================================================
-#ifdef __GNUG__
-#pragma implementation "app.h"
-#endif
+// ----------------------------------------------------------------------------
-#include "wx/wxprec.h"
+#include "wx/wxprec.h"
-#ifdef __BORLANDC__
- #pragma hdrstop
+#ifdef __BORLANDC__
+ #pragma hdrstop
#endif //__BORLANDC__
-#include <wx/string.h>
-#include <wx/intl.h>
-#include <wx/file.h>
-#include <wx/log.h>
-#include <wx/textfile.h>
-#include <wx/config.h>
+#ifndef wxUSE_CONFIG_NATIVE
+ #define wxUSE_CONFIG_NATIVE 1
+#endif
+
+#include "wx/config.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/intl.h"
+ #include "wx/log.h"
+ #include "wx/app.h"
+ #include "wx/utils.h"
+ #include "wx/arrstr.h"
+ #include "wx/math.h"
+#endif //WX_PRECOMP
+
+#if wxUSE_CONFIG && ((wxUSE_FILE && wxUSE_TEXTFILE) || wxUSE_CONFIG_NATIVE)
+
+#include "wx/apptrait.h"
+#include "wx/file.h"
#include <stdlib.h>
#include <ctype.h>
+#include <limits.h> // for INT_MAX
+
+// ----------------------------------------------------------------------------
+// global and class static variables
+// ----------------------------------------------------------------------------
+
+wxConfigBase *wxConfigBase::ms_pConfig = NULL;
+bool wxConfigBase::ms_bAutoCreate = true;
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
-// wxConfig
+// wxAppTraitsBase
+// ----------------------------------------------------------------------------
+
+wxConfigBase *wxAppTraitsBase::CreateConfig()
+{
+ return new
+ #if defined(__WXMSW__) && wxUSE_CONFIG_NATIVE
+ wxRegConfig(wxTheApp->GetAppName(), wxTheApp->GetVendorName());
+ #elif defined(__WXPALMOS__) && wxUSE_CONFIG_NATIVE
+ wxPrefConfig(wxTheApp->GetAppName());
+ #else // either we're under Unix or wish to use files even under Windows
+ wxFileConfig(wxTheApp->GetAppName());
+ #endif
+}
+
+// ----------------------------------------------------------------------------
+// wxConfigBase
+// ----------------------------------------------------------------------------
+IMPLEMENT_ABSTRACT_CLASS(wxConfigBase, wxObject)
+
+// Not all args will always be used by derived classes, but including them all
+// in each class ensures compatibility.
+wxConfigBase::wxConfigBase(const wxString& appName,
+ const wxString& vendorName,
+ const wxString& WXUNUSED(localFilename),
+ const wxString& WXUNUSED(globalFilename),
+ long style)
+ : m_appName(appName), m_vendorName(vendorName), m_style(style)
+{
+ m_bExpandEnvVars = true;
+ m_bRecordDefaults = false;
+}
+
+wxConfigBase::~wxConfigBase()
+{
+ // required here for Darwin
+}
+
+wxConfigBase *wxConfigBase::Set(wxConfigBase *pConfig)
+{
+ wxConfigBase *pOld = ms_pConfig;
+ ms_pConfig = pConfig;
+ return pOld;
+}
+
+wxConfigBase *wxConfigBase::Create()
+{
+ if ( ms_bAutoCreate && ms_pConfig == NULL ) {
+ wxAppTraits * const traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+ wxCHECK_MSG( traits, NULL, wxT("create wxApp before calling this") );
+
+ ms_pConfig = traits->CreateConfig();
+ }
+
+ return ms_pConfig;
+}
+
+// ----------------------------------------------------------------------------
+// wxConfigBase reading entries
+// ----------------------------------------------------------------------------
+
+// implement both Read() overloads for the given type in terms of DoRead()
+#define IMPLEMENT_READ_FOR_TYPE(name, type, deftype, extra) \
+ bool wxConfigBase::Read(const wxString& key, type *val) const \
+ { \
+ wxCHECK_MSG( val, false, wxT("wxConfig::Read(): NULL parameter") ); \
+ \
+ if ( !DoRead##name(key, val) ) \
+ return false; \
+ \
+ *val = extra(*val); \
+ \
+ return true; \
+ } \
+ \
+ bool wxConfigBase::Read(const wxString& key, \
+ type *val, \
+ deftype defVal) const \
+ { \
+ wxCHECK_MSG( val, false, wxT("wxConfig::Read(): NULL parameter") ); \
+ \
+ bool read = DoRead##name(key, val); \
+ if ( !read ) \
+ { \
+ if ( IsRecordingDefaults() ) \
+ { \
+ ((wxConfigBase *)this)->DoWrite##name(key, defVal); \
+ } \
+ \
+ *val = defVal; \
+ } \
+ \
+ *val = extra(*val); \
+ \
+ return read; \
+ }
+
+
+IMPLEMENT_READ_FOR_TYPE(String, wxString, const wxString&, ExpandEnvVars)
+IMPLEMENT_READ_FOR_TYPE(Long, long, long, long)
+IMPLEMENT_READ_FOR_TYPE(Double, double, double, double)
+IMPLEMENT_READ_FOR_TYPE(Bool, bool, bool, bool)
+
+#undef IMPLEMENT_READ_FOR_TYPE
+
+// int is stored as long
+bool wxConfigBase::Read(const wxString& key, int *pi) const
+{
+ long l = *pi;
+ bool r = Read(key, &l);
+ wxASSERT_MSG( l < INT_MAX, wxT("int overflow in wxConfig::Read") );
+ *pi = (int)l;
+ return r;
+}
+
+bool wxConfigBase::Read(const wxString& key, int *pi, int defVal) const
+{
+ long l = *pi;
+ bool r = Read(key, &l, defVal);
+ wxASSERT_MSG( l < INT_MAX, wxT("int overflow in wxConfig::Read") );
+ *pi = (int)l;
+ return r;
+}
+
+// the DoReadXXX() for the other types have implementation in the base class
+// but can be overridden in the derived ones
+bool wxConfigBase::DoReadBool(const wxString& key, bool* val) const
+{
+ wxCHECK_MSG( val, false, wxT("wxConfig::Read(): NULL parameter") );
+
+ long l;
+ if ( !DoReadLong(key, &l) )
+ return false;
+
+ wxASSERT_MSG( l == 0 || l == 1, wxT("bad bool value in wxConfig::DoReadInt") );
+
+ *val = l != 0;
+
+ return true;
+}
+
+bool wxConfigBase::DoReadDouble(const wxString& key, double* val) const
+{
+ wxString str;
+ if ( Read(key, &str) )
+ {
+ return str.ToDouble(val);
+ }
+
+ return false;
+}
+
+// string reading helper
+wxString wxConfigBase::ExpandEnvVars(const wxString& str) const
+{
+ wxString tmp; // Required for BC++
+ if (IsExpandingEnvVars())
+ tmp = wxExpandEnvVars(str);
+ else
+ tmp = str;
+ return tmp;
+}
+
+// ----------------------------------------------------------------------------
+// wxConfigBase writing
+// ----------------------------------------------------------------------------
+
+bool wxConfigBase::DoWriteDouble(const wxString& key, double val)
+{
+ return DoWriteString(key, wxString::Format(wxT("%g"), val));
+}
+
+bool wxConfigBase::DoWriteBool(const wxString& key, bool value)
+{
+ return DoWriteLong(key, value ? 1l : 0l);
+}
+
+// ----------------------------------------------------------------------------
+// wxConfigPathChanger
// ----------------------------------------------------------------------------
-wxConfig::~wxConfig()
+
+wxConfigPathChanger::wxConfigPathChanger(const wxConfigBase *pContainer,
+ const wxString& strEntry)
+{
+ m_bChanged = false;
+ m_pContainer = (wxConfigBase *)pContainer;
+
+ // the path is everything which precedes the last slash
+ wxString strPath = strEntry.BeforeLast(wxCONFIG_PATH_SEPARATOR);
+
+ // except in the special case of "/keyname" when there is nothing before "/"
+ if ( strPath.empty() &&
+ ((!strEntry.empty()) && strEntry[0] == wxCONFIG_PATH_SEPARATOR) )
+ {
+ strPath = wxCONFIG_PATH_SEPARATOR;
+ }
+
+ if ( !strPath.empty() )
+ {
+ if ( m_pContainer->GetPath() != strPath )
+ {
+ // we do change the path so restore it later
+ m_bChanged = true;
+
+ /* JACS: work around a memory bug that causes an assert
+ when using wxRegConfig, related to reference-counting.
+ Can be reproduced by removing .wc_str() below and
+ adding the following code to the config sample OnInit under
+ Windows:
+
+ pConfig->SetPath(wxT("MySettings"));
+ pConfig->SetPath(wxT(".."));
+ int value;
+ pConfig->Read(wxT("MainWindowX"), & value);
+ */
+ m_strOldPath = m_pContainer->GetPath().wc_str();
+ if ( *m_strOldPath.c_str() != wxCONFIG_PATH_SEPARATOR )
+ m_strOldPath += wxCONFIG_PATH_SEPARATOR;
+ m_pContainer->SetPath(strPath);
+ }
+
+ // in any case, use the just the name, not full path
+ m_strName = strEntry.AfterLast(wxCONFIG_PATH_SEPARATOR);
+ }
+ else {
+ // it's a name only, without path - nothing to do
+ m_strName = strEntry;
+ }
+}
+
+void wxConfigPathChanger::UpdateIfDeleted()
+{
+ // we don't have to do anything at all if we didn't change the path
+ if ( !m_bChanged )
+ return;
+
+ // find the deepest still existing parent path of the original path
+ while ( !m_pContainer->HasGroup(m_strOldPath) )
+ {
+ m_strOldPath = m_strOldPath.BeforeLast(wxCONFIG_PATH_SEPARATOR);
+ if ( m_strOldPath.empty() )
+ m_strOldPath = wxCONFIG_PATH_SEPARATOR;
+ }
+}
+
+wxConfigPathChanger::~wxConfigPathChanger()
+{
+ // only restore path if it was changed
+ if ( m_bChanged ) {
+ m_pContainer->SetPath(m_strOldPath);
+ }
+}
+
+// this is a wxConfig method but it's mainly used with wxConfigPathChanger
+/* static */
+wxString wxConfigBase::RemoveTrailingSeparator(const wxString& key)
{
+ wxString path(key);
+
+ // don't remove the only separator from a root group path!
+ while ( path.length() > 1 )
+ {
+ if ( *path.rbegin() != wxCONFIG_PATH_SEPARATOR )
+ break;
+
+ path.erase(path.end() - 1);
+ }
+
+ return path;
}
+#endif // wxUSE_CONFIG
+
// ----------------------------------------------------------------------------
// static & global functions
// ----------------------------------------------------------------------------
// understands both Unix and Windows (but only under Windows) environment
// variables expansion: i.e. $var, $(var) and ${var} are always understood
// and in addition under Windows %var% is also.
-wxString ExpandEnvVars(const wxString& str)
-{
- wxString strResult;
- // don't change the values the enum elements: they must be equal
- // to the matching [closing] delimiter.
- enum Bracket
- {
- Bracket_None,
- Bracket_Normal = ')',
- Bracket_Curly = '}',
-#ifdef __WINDOWS__
- Bracket_Windows = '%' // yeah, Windows people are a bit strange ;-)
+// don't change the values the enum elements: they must be equal
+// to the matching [closing] delimiter.
+enum Bracket
+{
+ Bracket_None,
+ Bracket_Normal = ')',
+ Bracket_Curly = '}',
+#ifdef __WXMSW__
+ Bracket_Windows = '%', // yeah, Windows people are a bit strange ;-)
#endif
- };
+ Bracket_Max
+};
+
+wxString wxExpandEnvVars(const wxString& str)
+{
+ wxString strResult;
+ strResult.Alloc(str.length());
- uint m;
- for ( uint n = 0; n < str.Len(); n++ ) {
- switch ( str[n] ) {
-#ifdef __WINDOWS__
- case '%':
+ size_t m;
+ for ( size_t n = 0; n < str.length(); n++ ) {
+ switch ( str[n].GetValue() ) {
+#ifdef __WXMSW__
+ case wxT('%'):
#endif //WINDOWS
- case '$':
+ case wxT('$'):
{
Bracket bracket;
- #ifdef __WINDOWS__
- if ( str[n] == '%' )
+ #ifdef __WXMSW__
+ if ( str[n] == wxT('%') )
bracket = Bracket_Windows;
else
#endif //WINDOWS
- if ( n == str.Len() - 1 ) {
+ if ( n == str.length() - 1 ) {
bracket = Bracket_None;
}
else {
- switch ( str[n + 1] ) {
- case '(':
- bracket = Bracket_Normal;
+ switch ( str[n + 1].GetValue() ) {
+ case wxT('('):
+ bracket = Bracket_Normal;
n++; // skip the bracket
break;
- case '{':
+ case wxT('{'):
bracket = Bracket_Curly;
n++; // skip the bracket
break;
m = n + 1;
- while ( m < str.Len() && (isalnum(str[m]) || str[m] == '_') )
+ while ( m < str.length() && (wxIsalnum(str[m]) || str[m] == wxT('_')) )
m++;
wxString strVarName(str.c_str() + n + 1, m - n - 1);
- const char *pszValue = getenv(strVarName);
- if ( pszValue != NULL ) {
- strResult += pszValue;
+#ifdef __WXWINCE__
+ const bool expanded = false;
+#else
+ // NB: use wxGetEnv instead of wxGetenv as otherwise variables
+ // set through wxSetEnv may not be read correctly!
+ bool expanded = false;
+ wxString tmp;
+ if (wxGetEnv(strVarName, &tmp))
+ {
+ strResult += tmp;
+ expanded = true;
}
- else {
+ else
+#endif
+ {
// variable doesn't exist => don't change anything
- #ifdef __WINDOWS__
+ #ifdef __WXMSW__
if ( bracket != Bracket_Windows )
#endif
if ( bracket != Bracket_None )
// check the closing bracket
if ( bracket != Bracket_None ) {
- if ( m == str.Len() || str[m] != (char)bracket ) {
- wxLogWarning("missing '%c' at position %d in '%s'.",
- (char)bracket, m + 1, str.c_str());
+ if ( m == str.length() || str[m] != (wxChar)bracket ) {
+ // under MSW it's common to have '%' characters in the registry
+ // and it's annoying to have warnings about them each time, so
+ // ignroe them silently if they are not used for env vars
+ //
+ // under Unix, OTOH, this warning could be useful for the user to
+ // understand why isn't the variable expanded as intended
+ #ifndef __WXMSW__
+ wxLogWarning(_("Environment variables expansion failed: missing '%c' at position %u in '%s'."),
+ (char)bracket, (unsigned int) (m + 1), str.c_str());
+ #endif // __WXMSW__
}
else {
- // skip closing bracket
- if ( pszValue == NULL )
- strResult << (char)bracket;
+ // skip closing bracket unless the variables wasn't expanded
+ if ( !expanded )
+ strResult << (wxChar)bracket;
m++;
}
}
}
break;
- case '\\':
- n++;
- // fall through
+ case wxT('\\'):
+ // backslash can be used to suppress special meaning of % and $
+ if ( n != str.length() - 1 &&
+ (str[n + 1] == wxT('%') || str[n + 1] == wxT('$')) ) {
+ strResult += str[++n];
+
+ break;
+ }
+ //else: fall through
default:
strResult += str[n];
return strResult;
}
+
+// this function is used to properly interpret '..' in path
+void wxSplitPath(wxArrayString& aParts, const wxString& path)
+{
+ aParts.clear();
+
+ wxString strCurrent;
+ wxString::const_iterator pc = path.begin();
+ for ( ;; ) {
+ if ( pc == path.end() || *pc == wxCONFIG_PATH_SEPARATOR ) {
+ if ( strCurrent == wxT(".") ) {
+ // ignore
+ }
+ else if ( strCurrent == wxT("..") ) {
+ // go up one level
+ if ( aParts.size() == 0 )
+ {
+ wxLogWarning(_("'%s' has extra '..', ignored."), path);
+ }
+ else
+ {
+ aParts.erase(aParts.end() - 1);
+ }
+
+ strCurrent.Empty();
+ }
+ else if ( !strCurrent.empty() ) {
+ aParts.push_back(strCurrent);
+ strCurrent.Empty();
+ }
+ //else:
+ // could log an error here, but we prefer to ignore extra '/'
+
+ if ( pc == path.end() )
+ break;
+ }
+ else
+ strCurrent += *pc;
+
+ ++pc;
+ }
+}
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