home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
wxos2233.zip
/
wxOS2-2_3_3.zip
/
wxWindows-2.3.3
/
src
/
common
/
config.cpp
< prev
next >
Wrap
C/C++ Source or Header
|
2001-12-17
|
14KB
|
418 lines
///////////////////////////////////////////////////////////////////////////////
// Name: config.cpp
// Purpose: implementation of wxConfigBase class
// Author: Vadim Zeitlin
// Modified by:
// Created: 07.04.98
// RCS-ID: $Id: config.cpp,v 1.54 2001/12/14 00:58:59 VZ Exp $
// Copyright: (c) 1997 Karsten Ballⁿder Ballueder@usa.net
// Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "confbase.h"
#endif
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif //__BORLANDC__
#ifndef wxUSE_CONFIG_NATIVE
#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/textfile.h"
#include "wx/utils.h"
#include "wx/utils.h"
#include <stdlib.h>
#include <math.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
// ============================================================================
// ----------------------------------------------------------------------------
// wxConfigBase
// ----------------------------------------------------------------------------
// 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()
{
}
wxConfigBase *wxConfigBase::Set(wxConfigBase *pConfig)
{
wxConfigBase *pOld = ms_pConfig;
ms_pConfig = pConfig;
return pOld;
}
wxConfigBase *wxConfigBase::Create()
{
if ( ms_bAutoCreate && ms_pConfig == NULL ) {
ms_pConfig =
#if defined(__WXMSW__) && wxUSE_CONFIG_NATIVE
#ifdef __WIN32__
new wxRegConfig(wxTheApp->GetAppName(), wxTheApp->GetVendorName());
#else //WIN16
new wxIniConfig(wxTheApp->GetAppName(), wxTheApp->GetVendorName());
#endif
#else // either we're under Unix or wish to use files even under Windows
new wxFileConfig(wxTheApp->GetAppName());
#endif
}
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, _T("wxConfig::Read(): NULL parameter") ); \
\
return DoRead##name(key, val); \
} \
\
bool wxConfigBase::Read(const wxString& key, \
type *val, \
deftype defVal) const \
{ \
wxCHECK_MSG( val, FALSE, _T("wxConfig::Read(): NULL parameter") ); \
\
if ( DoRead##name(key, val) ) \
return TRUE; \
\
if ( IsRecordingDefaults() ) \
{ \
((wxConfigBase *)this)->DoWrite##name(key, defVal); \
} \
\
*val = extra(defVal); \
\
return FALSE; \
}
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)
#undef IMPLEMENT_READ_FOR_TYPE
// 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
{
wxCHECK_MSG( pi, FALSE, _T("wxConfig::Read(): NULL parameter") );
long l;
if ( !DoReadLong(key, &l) )
return FALSE;
wxASSERT_MSG( l < INT_MAX, _T("overflow in wxConfig::DoReadInt") );
*pi = (int)l;
return TRUE;
}
bool wxConfigBase::DoReadBool(const wxString& key, bool* val) const
{
wxCHECK_MSG( val, FALSE, _T("wxConfig::Read(): NULL parameter") );
long l;
if ( !DoReadLong(key, &l) )
return FALSE;
wxASSERT_MSG( l == 0 || l == 1, _T("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(_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
// ----------------------------------------------------------------------------
wxConfigPathChanger::wxConfigPathChanger(const wxConfigBase *pContainer,
const wxString& strEntry)
{
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.IsEmpty() &&
((!strEntry.IsEmpty()) && strEntry[0] == wxCONFIG_PATH_SEPARATOR) )
{
strPath = wxCONFIG_PATH_SEPARATOR;
}
if ( !strPath.IsEmpty() ) {
// do change the path
m_bChanged = TRUE;
m_strName = strEntry.AfterLast(wxCONFIG_PATH_SEPARATOR);
m_strOldPath = m_pContainer->GetPath();
if ( m_strOldPath.Len() == 0 ||
m_strOldPath.Last() != wxCONFIG_PATH_SEPARATOR )
m_strOldPath += wxCONFIG_PATH_SEPARATOR;
m_pContainer->SetPath(strPath);
}
else {
// it's a name only, without path - nothing to do
m_bChanged = FALSE;
m_strName = strEntry;
}
}
wxConfigPathChanger::~wxConfigPathChanger()
{
// only restore path if it was changed
if ( m_bChanged ) {
m_pContainer->SetPath(m_strOldPath);
}
}
#endif // wxUSE_CONFIG
// ----------------------------------------------------------------------------
// static & global functions
// ----------------------------------------------------------------------------
// understands both Unix and Windows (but only under Windows) environment
// variables expansion: i.e. $var, $(var) and ${var} are always understood
// and in addition under Windows %var% is also.
wxString wxExpandEnvVars(const wxString& str)
{
wxString strResult;
strResult.Alloc(str.Len());
// don't change the values the enum elements: they must be equal
// to the matching [closing] delimiter.
enum Bracket
{
Bracket_None,
Bracket_Normal = ')',
Bracket_Curly = '}'
#ifdef __WXMSW__
,Bracket_Windows = '%' // yeah, Windows people are a bit strange ;-)
#endif
};
size_t m;
for ( size_t n = 0; n < str.Len(); n++ ) {
switch ( str[n] ) {
#ifdef __WXMSW__
case wxT('%'):
#endif //WINDOWS
case wxT('$'):
{
Bracket bracket;
#ifdef __WXMSW__
if ( str[n] == wxT('%') )
bracket = Bracket_Windows;
else
#endif //WINDOWS
if ( n == str.Len() - 1 ) {
bracket = Bracket_None;
}
else {
switch ( str[n + 1] ) {
case wxT('('):
bracket = Bracket_Normal;
n++; // skip the bracket
break;
case wxT('{'):
bracket = Bracket_Curly;
n++; // skip the bracket
break;
default:
bracket = Bracket_None;
}
}
m = n + 1;
while ( m < str.Len() && (wxIsalnum(str[m]) || str[m] == wxT('_')) )
m++;
wxString strVarName(str.c_str() + n + 1, m - n - 1);
const wxChar *pszValue = wxGetenv(strVarName);
if ( pszValue != NULL ) {
strResult += pszValue;
}
else {
// variable doesn't exist => don't change anything
#ifdef __WXMSW__
if ( bracket != Bracket_Windows )
#endif
if ( bracket != Bracket_None )
strResult << str[n - 1];
strResult << str[n] << strVarName;
}
// 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());
}
else {
// skip closing bracket unless the variables wasn't expanded
if ( pszValue == NULL )
strResult << (char)bracket;
m++;
}
}
n = m - 1; // skip variable name
}
break;
case '\\':
// backslash can be used to suppress special meaning of % and $
if ( n != str.Len() && (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
/// separates group and entry names (probably shouldn't be changed)
void wxSplitPath(wxArrayString& aParts, const wxChar *sz)
{
aParts.Empty();
wxString strCurrent;
const wxChar *pc = sz;
for ( ;; ) {
if ( *pc == wxT('\0') || *pc == wxCONFIG_PATH_SEPARATOR ) {
if ( strCurrent == wxT(".") ) {
// ignore
}
else if ( strCurrent == wxT("..") ) {
// go up one level
if ( aParts.IsEmpty() )
wxLogWarning(_("'%s' has extra '..', ignored."), sz);
else
aParts.Remove(aParts.Count() - 1);
strCurrent.Empty();
}
else if ( !strCurrent.IsEmpty() ) {
aParts.Add(strCurrent);
strCurrent.Empty();
}
//else:
// could log an error here, but we prefer to ignore extra '/'
if ( *pc == wxT('\0') )
break;
}
else
strCurrent += *pc;
pc++;
}
}