]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/config.cpp
ambiguous operator[] access
[wxWidgets.git] / src / common / config.cpp
index 1b614016b2750f3951157b227aff3b60d4e37490..9b5612a4b0a2a7e976c009a278d5312172484c64 100644 (file)
@@ -7,13 +7,13 @@
 // RCS-ID:      $Id$
 // Copyright:   (c) 1997 Karsten Ballüder   Ballueder@usa.net
 //                       Vadim Zeitlin      <zeitlin@dptmaths.ens-cachan.fr>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "confbase.h"
 #endif
 
     #define wxUSE_CONFIG_NATIVE 1
 #endif
 
+#include "wx/config.h"
+#include "wx/intl.h"
+#include "wx/log.h"
+
 #if wxUSE_CONFIG && ((wxUSE_FILE && wxUSE_TEXTFILE) || wxUSE_CONFIG_NATIVE)
 
 #include "wx/app.h"
 #include "wx/file.h"
-#include "wx/log.h"
 #include "wx/textfile.h"
 #include "wx/utils.h"
-#include "wx/log.h"
 #include "wx/utils.h"
-#include "wx/intl.h"
-
-#include "wx/config.h"
 
 #include <stdlib.h>
 #include <math.h>
 #include <ctype.h>
+#include <limits.h>     // for INT_MAX
 
 // ----------------------------------------------------------------------------
 // global and class static variables
@@ -68,7 +68,8 @@ wxConfigBase::wxConfigBase(const wxString& appName,
                            long style)
             : m_appName(appName), m_vendorName(vendorName), m_style(style)
 {
-    m_bExpandEnvVars = TRUE; m_bRecordDefaults = FALSE;
+    m_bExpandEnvVars = TRUE;
+    m_bRecordDefaults = FALSE;
 }
 
 wxConfigBase::~wxConfigBase()
@@ -100,118 +101,99 @@ wxConfigBase *wxConfigBase::Create()
   return ms_pConfig;
 }
 
-wxString wxConfigBase::Read(const wxString& key, const wxString& defVal) const
-{
-  wxString s;
-  Read(key, &s, defVal);
-  return s;
-}
+// ----------------------------------------------------------------------------
+// wxConfigBase reading entries
+// ----------------------------------------------------------------------------
 
-bool wxConfigBase::Read(const wxString& key, wxString *str, const wxString& defVal) const
-{
-    if (!Read(key, str))
-    {
-        *str = ExpandEnvVars(defVal);
-        return FALSE;
+// 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, _T("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, _T("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;                                                        \
     }
-    else
-        return TRUE;
-}
 
-bool wxConfigBase::Read(const wxString& key, long *pl, long defVal) const
-{
-    if (!Read(key, pl))
-    {
-        *pl = defVal;
-        return FALSE;
-    }
-    else
-        return TRUE;
-}
 
-bool wxConfigBase::Read(const wxString& key, double* val) const
-{
-    wxString str;
-    if ( Read(key, &str) )
-    {
-        return str.ToDouble(val);
-    }
+IMPLEMENT_READ_FOR_TYPE(String, wxString, const wxString&, ExpandEnvVars)
+IMPLEMENT_READ_FOR_TYPE(Long, long, long, long)
+IMPLEMENT_READ_FOR_TYPE(Int, int, int, int)
+IMPLEMENT_READ_FOR_TYPE(Double, double, double, double)
+IMPLEMENT_READ_FOR_TYPE(Bool, bool, bool, bool)
 
-    return FALSE;
-}
+#undef IMPLEMENT_READ_FOR_TYPE
 
-bool wxConfigBase::Read(const wxString& key, double* val, double defVal) const
+// the DoReadXXX() for the other types have implementation in the base class
+// but can be overridden in the derived ones
+bool wxConfigBase::DoReadInt(const wxString& key, int *pi) const
 {
-    if (!Read(key, val))
-    {
-        *val = defVal;
-        return FALSE;
-    }
-    else
-        return TRUE;
-}
+    wxCHECK_MSG( pi, FALSE, _T("wxConfig::Read(): NULL parameter") );
 
-bool wxConfigBase::Read(const wxString& key, bool* val) const
-{
     long l;
-    if (Read(key, & l))
-    {
-        *val = (l != 0);
-        return TRUE;
-    }
-    else
+    if ( !DoReadLong(key, &l) )
         return FALSE;
-}
 
-bool wxConfigBase::Read(const wxString& key, bool* val, bool defVal) const
-{
-    if (!Read(key, val))
-    {
-        *val = defVal;
-        return FALSE;
-    }
-    else
-        return TRUE;
-}
+    wxASSERT_MSG( l < INT_MAX, _T("overflow in wxConfig::DoReadInt") );
 
-// Convenience functions
+    *pi = (int)l;
 
-bool wxConfigBase::Read(const wxString& key, int *pi) const
-{
-    long l;
-    bool ret = Read(key, &l);
-    if (ret)
-        *pi = (int) l;
-    return ret;
+    return TRUE;
 }
 
-bool wxConfigBase::Read(const wxString& key, int *pi, int defVal) const
+bool wxConfigBase::DoReadBool(const wxString& key, bool* val) const
 {
+    wxCHECK_MSG( val, FALSE, _T("wxConfig::Read(): NULL parameter") );
+
     long l;
-    bool ret = Read(key, &l, (long) defVal);
-    if (ret)
-        *pi = (int) l;
-    return ret;
-}
+    if ( !DoReadLong(key, &l) )
+        return FALSE;
 
-bool wxConfigBase::Write(const wxString& key, double val)
-{
-    wxString str;
-    str.Printf(wxT("%g"), val);
-    return Write(key, str);
-}
+    wxASSERT_MSG( l == 0 || l == 1, _T("bad bool value in wxConfig::DoReadInt") );
 
-bool wxConfigBase::Write(const wxString& key, bool value)
-{
-    return Write(key, value ? 1l : 0l);
+    *val = l != 0;
+
+    return TRUE;
 }
 
-bool wxConfigBase::Write(const wxString& key, const wxChar *value)
+bool wxConfigBase::DoReadDouble(const wxString& key, double* val) const
 {
-    // explicit cast needed, otherwise value would have been converted to bool
-    return Write(key, wxString(value));
+    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++
@@ -222,6 +204,25 @@ wxString wxConfigBase::ExpandEnvVars(const wxString& str) const
     return tmp;
 }
 
+// ----------------------------------------------------------------------------
+// wxConfigBase writing
+// ----------------------------------------------------------------------------
+
+bool wxConfigBase::DoWriteDouble(const wxString& key, double val)
+{
+    return DoWriteString(key, wxString::Format(_T("%g"), val));
+}
+
+bool wxConfigBase::DoWriteInt(const wxString& key, int value)
+{
+    return DoWriteLong(key, (long)value);
+}
+
+bool wxConfigBase::DoWriteBool(const wxString& key, bool value)
+{
+    return DoWriteLong(key, value ? 1l : 0l);
+}
+
 // ----------------------------------------------------------------------------
 // wxConfigPathChanger
 // ----------------------------------------------------------------------------
@@ -266,6 +267,8 @@ wxConfigPathChanger::~wxConfigPathChanger()
   }
 }
 
+#endif // wxUSE_CONFIG
+
 // ----------------------------------------------------------------------------
 // static & global functions
 // ----------------------------------------------------------------------------
@@ -284,10 +287,11 @@ wxString wxExpandEnvVars(const wxString& str)
   {
     Bracket_None,
     Bracket_Normal  = ')',
-    Bracket_Curly   = '}'
+    Bracket_Curly   = '}',
 #ifdef  __WXMSW__
-    ,Bracket_Windows = '%'     // yeah, Windows people are a bit strange ;-)
+    Bracket_Windows = '%',    // yeah, Windows people are a bit strange ;-)
 #endif
+    Bracket_Max
   };
 
   size_t m;
@@ -331,7 +335,11 @@ wxString wxExpandEnvVars(const wxString& str)
 
           wxString strVarName(str.c_str() + n + 1, m - n - 1);
 
+#ifdef __WXWINCE__
+          const wxChar *pszValue = NULL;
+#else
           const wxChar *pszValue = wxGetenv(strVarName);
+#endif
           if ( pszValue != NULL ) {
             strResult += pszValue;
           }
@@ -348,8 +356,16 @@ wxString wxExpandEnvVars(const wxString& str)
           // check the closing bracket
           if ( bracket != Bracket_None ) {
             if ( m == str.Len() || str[m] != (char)bracket ) {
-              wxLogWarning(_("Environment variables expansion failed: missing '%c' at position %d in '%s'."),
-                           (char)bracket, m + 1, str.c_str());
+              // 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 %d in '%s'."),
+                             (char)bracket, m + 1, str.c_str());
+              #endif // __WXMSW__
             }
             else {
               // skip closing bracket unless the variables wasn't expanded
@@ -383,7 +399,7 @@ wxString wxExpandEnvVars(const wxString& str)
 // this function is used to properly interpret '..' in path
 void wxSplitPath(wxArrayString& aParts, const wxChar *sz)
 {
-  aParts.Empty();
+  aParts.clear();
 
   wxString strCurrent;
   const wxChar *pc = sz;
@@ -394,15 +410,15 @@ void wxSplitPath(wxArrayString& aParts, const wxChar *sz)
       }
       else if ( strCurrent == wxT("..") ) {
         // go up one level
-        if ( aParts.IsEmpty() )
+        if ( aParts.size() == 0 )
           wxLogWarning(_("'%s' has extra '..', ignored."), sz);
         else
-          aParts.Remove(aParts.Count() - 1);
+          aParts.erase(aParts.end() - 1);
 
         strCurrent.Empty();
       }
       else if ( !strCurrent.IsEmpty() ) {
-        aParts.Add(strCurrent);
+        aParts.push_back(strCurrent);
         strCurrent.Empty();
       }
       //else:
@@ -418,5 +434,4 @@ void wxSplitPath(wxArrayString& aParts, const wxChar *sz)
   }
 }
 
-#endif // wxUSE_CONFIG