76f53a0e39
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@559 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1369 lines
37 KiB
C++
1369 lines
37 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: fileconf.cpp
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// Purpose: implementation of wxFileConfig derivation of wxConfig
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 07.04.98 (adapted from appconf.cpp)
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// RCS-ID: $Id$
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// Copyright: (c) 1997 Karsten Ballüder & Vadim Zeitlin
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// Ballueder@usa.net <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "fileconf.h"
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#endif
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif //__BORLANDC__
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#ifndef WX_PRECOMP
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#include <wx/string.h>
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#include <wx/intl.h>
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#endif //WX_PRECOMP
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#include <wx/dynarray.h>
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#include <wx/file.h>
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#include <wx/log.h>
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#include <wx/textfile.h>
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#include <wx/config.h>
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#include <wx/fileconf.h>
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// _WINDOWS_ is defined when windows.h is included,
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// __WXMSW__ is defined for MS Windows compilation
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#if defined(__WXMSW__) && !defined(_WINDOWS_)
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#include <windows.h>
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#endif //windows.h
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#include <stdlib.h>
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#include <ctype.h>
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// ----------------------------------------------------------------------------
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// macros
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// ----------------------------------------------------------------------------
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#define CONST_CAST ((wxFileConfig *)this)->
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// ----------------------------------------------------------------------------
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// global functions declarations
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// ----------------------------------------------------------------------------
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// is 'c' a valid character in group name?
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// NB: wxCONFIG_IMMUTABLE_PREFIX and wxCONFIG_PATH_SEPARATOR must be valid chars,
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// but _not_ ']' (group name delimiter)
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inline bool IsValid(char c) { return isalnum(c) || strchr("@_/-!.*%", c); }
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// compare functions for sorting the arrays
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static int CompareEntries(wxFileConfig::ConfigEntry *p1,
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wxFileConfig::ConfigEntry *p2);
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static int CompareGroups(wxFileConfig::ConfigGroup *p1,
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wxFileConfig::ConfigGroup *p2);
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// filter strings
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static wxString FilterIn(const wxString& str);
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static wxString FilterOut(const wxString& str);
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// static functions
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// ----------------------------------------------------------------------------
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wxString wxFileConfig::GetGlobalDir()
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{
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wxString strDir;
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#ifdef __UNIX__
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strDir = "/etc/";
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#elif defined(__WXSTUBS__)
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// TODO
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wxASSERT( TRUE ) ;
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#else // Windows
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#ifndef _MAX_PATH
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#define _MAX_PATH 512
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#endif
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char szWinDir[_MAX_PATH];
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::GetWindowsDirectory(szWinDir, _MAX_PATH);
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strDir = szWinDir;
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strDir << '\\';
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#endif // Unix/Windows
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return strDir;
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}
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wxString wxFileConfig::GetLocalDir()
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{
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wxString strDir;
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#ifdef __UNIX__
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const char *szHome = getenv("HOME");
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if ( szHome == NULL ) {
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// we're homeless...
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wxLogWarning(_("can't find user's HOME, using current directory."));
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strDir = ".";
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}
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else
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strDir = szHome;
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strDir << '/'; // a double slash is no problem, a missin one yes
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#else // Windows
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#ifdef __WIN32__
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const char *szHome = getenv("HOMEDRIVE");
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if ( szHome != NULL )
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strDir << szHome;
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szHome = getenv("HOMEPATH");
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if ( szHome != NULL )
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strDir << szHome;
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#else // Win16
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// Win16 has no idea about home, so use the current directory instead
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strDir = ".\\";
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#endif // WIN16/32
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#endif // UNIX/Win
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return strDir;
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}
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wxString wxFileConfig::GetGlobalFileName(const char *szFile)
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{
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wxString str = GetGlobalDir();
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str << szFile;
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if ( strchr(szFile, '.') == NULL )
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#ifdef __UNIX__
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str << ".conf";
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#else // Windows
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str << ".ini";
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#endif // UNIX/Win
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return str;
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}
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wxString wxFileConfig::GetLocalFileName(const char *szFile)
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{
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wxString str = GetLocalDir();
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#ifdef __UNIX__
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str << '.';
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#endif
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str << szFile;
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#ifdef __WXMSW__
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if ( strchr(szFile, '.') == NULL )
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str << ".ini";
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#endif
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return str;
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}
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// ----------------------------------------------------------------------------
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// ctor
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// ----------------------------------------------------------------------------
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void wxFileConfig::Init()
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{
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m_pCurrentGroup =
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m_pRootGroup = new ConfigGroup(NULL, "", this);
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m_linesHead =
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m_linesTail = NULL;
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// it's not an error if (one of the) file(s) doesn't exist
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// parse the global file
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if ( !m_strGlobalFile.IsEmpty() && wxFile::Exists(m_strGlobalFile) ) {
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wxTextFile fileGlobal(m_strGlobalFile);
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if ( fileGlobal.Open() ) {
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Parse(fileGlobal, FALSE /* global */);
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SetRootPath();
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}
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else
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wxLogWarning(_("can't open global configuration file '%s'."),
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m_strGlobalFile.c_str());
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}
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// parse the local file
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if ( !m_strLocalFile.IsEmpty() && wxFile::Exists(m_strLocalFile) ) {
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wxTextFile fileLocal(m_strLocalFile);
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if ( fileLocal.Open() ) {
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Parse(fileLocal, TRUE /* local */);
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SetRootPath();
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}
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else
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wxLogWarning(_("can't open user configuration file '%s'."),
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m_strLocalFile.c_str());
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}
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}
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wxFileConfig::wxFileConfig(const char *szAppName, bool bLocalOnly)
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{
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wxASSERT( !IsEmpty(szAppName) ); // invent a name for your application!
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m_strLocalFile = GetLocalFileName(szAppName);
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if ( !bLocalOnly )
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m_strGlobalFile = GetGlobalFileName(szAppName);
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//else: it's going to be empty and we won't use the global file
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Init();
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}
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wxFileConfig::wxFileConfig(const wxString& strLocal, const wxString& strGlobal)
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: m_strLocalFile(strLocal), m_strGlobalFile(strGlobal)
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{
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// if the path is not absolute, prepend the standard directory to it
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if ( !strLocal.IsEmpty() && !wxIsAbsolutePath(strLocal) )
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{
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m_strLocalFile = GetLocalDir();
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m_strLocalFile << strLocal;
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}
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if ( !strGlobal.IsEmpty() && !wxIsAbsolutePath(strGlobal) )
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{
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m_strGlobalFile = GetGlobalDir();
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m_strGlobalFile << strGlobal;
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}
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Init();
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}
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void wxFileConfig::CleanUp()
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{
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delete m_pRootGroup;
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LineList *pCur = m_linesHead;
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while ( pCur != NULL ) {
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LineList *pNext = pCur->Next();
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delete pCur;
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pCur = pNext;
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}
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}
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wxFileConfig::~wxFileConfig()
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{
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Flush();
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CleanUp();
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}
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// ----------------------------------------------------------------------------
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// parse a config file
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// ----------------------------------------------------------------------------
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void wxFileConfig::Parse(wxTextFile& file, bool bLocal)
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{
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const char *pStart;
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const char *pEnd;
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wxString strLine;
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uint nLineCount = file.GetLineCount();
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for ( uint n = 0; n < nLineCount; n++ ) {
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strLine = file[n];
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// add the line to linked list
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if ( bLocal )
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LineListAppend(strLine);
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// skip leading spaces
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for ( pStart = strLine; isspace(*pStart); pStart++ )
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;
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// skip blank/comment lines
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if ( *pStart == '\0'|| *pStart == ';' || *pStart == '#' )
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continue;
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if ( *pStart == '[' ) { // a new group
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pEnd = pStart;
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while ( *++pEnd != ']' ) {
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if ( !IsValid(*pEnd) && *pEnd != ' ' ) // allow spaces in group names
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break;
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}
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if ( *pEnd != ']' ) {
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wxLogError(_("file '%s': unexpected character %c at line %d."),
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file.GetName(), *pEnd, n + 1);
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continue; // skip this line
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}
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// group name here is always considered as abs path
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wxString strGroup;
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pStart++;
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strGroup << wxCONFIG_PATH_SEPARATOR << wxString(pStart, pEnd - pStart);
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// will create it if doesn't yet exist
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SetPath(strGroup);
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if ( bLocal )
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m_pCurrentGroup->SetLine(m_linesTail);
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// check that there is nothing except comments left on this line
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bool bCont = TRUE;
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while ( *++pEnd != '\0' && bCont ) {
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switch ( *pEnd ) {
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case '#':
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case ';':
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bCont = FALSE;
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break;
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case ' ':
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case '\t':
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// ignore whitespace ('\n' impossible here)
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break;
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default:
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wxLogWarning(_("file '%s', line %d: '%s' "
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"ignored after group header."),
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file.GetName(), n + 1, pEnd);
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bCont = FALSE;
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}
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}
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}
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else { // a key
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const char *pEnd = pStart;
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while ( IsValid(*pEnd) )
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pEnd++;
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wxString strKey(pStart, pEnd);
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// skip whitespace
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while ( isspace(*pEnd) )
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pEnd++;
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if ( *pEnd++ != '=' ) {
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wxLogError(_("file '%s', line %d: '=' expected."),
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file.GetName(), n + 1);
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}
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else {
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ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strKey);
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if ( pEntry == NULL ) {
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// new entry
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pEntry = m_pCurrentGroup->AddEntry(strKey, n);
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if ( bLocal )
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pEntry->SetLine(m_linesTail);
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}
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else {
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if ( bLocal && pEntry->IsImmutable() ) {
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// immutable keys can't be changed by user
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wxLogWarning(_("file '%s', line %d: value for "
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"immutable key '%s' ignored."),
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file.GetName(), n + 1, strKey.c_str());
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continue;
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}
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// the condition below catches the cases (a) and (b) but not (c):
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// (a) global key found second time in global file
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// (b) key found second (or more) time in local file
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// (c) key from global file now found in local one
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// which is exactly what we want.
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else if ( !bLocal || pEntry->IsLocal() ) {
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wxLogWarning(_("file '%s', line %d: key '%s' was first "
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"found at line %d."),
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file.GetName(), n + 1, strKey.c_str(), pEntry->Line());
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if ( bLocal )
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pEntry->SetLine(m_linesTail);
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}
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}
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// skip whitespace
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while ( isspace(*pEnd) )
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pEnd++;
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pEntry->SetValue(FilterIn(pEnd), FALSE /* read from file */);
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}
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}
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}
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}
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// ----------------------------------------------------------------------------
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// set/retrieve path
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// ----------------------------------------------------------------------------
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void wxFileConfig::SetRootPath()
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{
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m_strPath.Empty();
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m_pCurrentGroup = m_pRootGroup;
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}
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void wxFileConfig::SetPath(const wxString& strPath)
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{
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wxArrayString aParts;
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if ( strPath.IsEmpty() ) {
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SetRootPath();
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return;
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}
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if ( strPath[0] == wxCONFIG_PATH_SEPARATOR ) {
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// absolute path
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wxSplitPath(aParts, strPath);
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}
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else {
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// relative path, combine with current one
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wxString strFullPath = m_strPath;
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strFullPath << wxCONFIG_PATH_SEPARATOR << strPath;
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wxSplitPath(aParts, strFullPath);
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}
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// change current group
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uint n;
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m_pCurrentGroup = m_pRootGroup;
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for ( n = 0; n < aParts.Count(); n++ ) {
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ConfigGroup *pNextGroup = m_pCurrentGroup->FindSubgroup(aParts[n]);
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if ( pNextGroup == NULL )
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pNextGroup = m_pCurrentGroup->AddSubgroup(aParts[n]);
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m_pCurrentGroup = pNextGroup;
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}
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// recombine path parts in one variable
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m_strPath.Empty();
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for ( n = 0; n < aParts.Count(); n++ ) {
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m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n];
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}
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}
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// ----------------------------------------------------------------------------
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// enumeration
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// ----------------------------------------------------------------------------
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bool wxFileConfig::GetFirstGroup(wxString& str, long& lIndex) const
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{
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lIndex = 0;
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return GetNextGroup(str, lIndex);
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}
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bool wxFileConfig::GetNextGroup (wxString& str, long& lIndex) const
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{
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if ( uint(lIndex) < m_pCurrentGroup->Groups().Count() ) {
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str = m_pCurrentGroup->Groups()[lIndex++]->Name();
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return TRUE;
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}
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else
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return FALSE;
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}
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bool wxFileConfig::GetFirstEntry(wxString& str, long& lIndex) const
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{
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lIndex = 0;
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return GetNextEntry(str, lIndex);
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}
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bool wxFileConfig::GetNextEntry (wxString& str, long& lIndex) const
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{
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if ( uint(lIndex) < m_pCurrentGroup->Entries().Count() ) {
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str = m_pCurrentGroup->Entries()[lIndex++]->Name();
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return TRUE;
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}
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else
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return FALSE;
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}
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uint wxFileConfig::GetNumberOfEntries(bool bRecursive) const
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{
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uint n = m_pCurrentGroup->Entries().Count();
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if ( bRecursive ) {
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ConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
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uint nSubgroups = m_pCurrentGroup->Groups().Count();
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for ( uint nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
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CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
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n += GetNumberOfEntries(TRUE);
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CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
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}
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}
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return n;
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}
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uint wxFileConfig::GetNumberOfGroups(bool bRecursive) const
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{
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uint n = m_pCurrentGroup->Groups().Count();
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if ( bRecursive ) {
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ConfigGroup *pOldCurrentGroup = m_pCurrentGroup;
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uint nSubgroups = m_pCurrentGroup->Groups().Count();
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for ( uint nGroup = 0; nGroup < nSubgroups; nGroup++ ) {
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CONST_CAST m_pCurrentGroup = m_pCurrentGroup->Groups()[nGroup];
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n += GetNumberOfGroups(TRUE);
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CONST_CAST m_pCurrentGroup = pOldCurrentGroup;
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}
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}
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return n;
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}
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// ----------------------------------------------------------------------------
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// tests for existence
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// ----------------------------------------------------------------------------
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bool wxFileConfig::HasGroup(const wxString& strName) const
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{
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PathChanger path(this, strName);
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ConfigGroup *pGroup = m_pCurrentGroup->FindSubgroup(path.Name());
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return pGroup != NULL;
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}
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bool wxFileConfig::HasEntry(const wxString& strName) const
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{
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PathChanger path(this, strName);
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ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
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return pEntry != NULL;
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}
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// ----------------------------------------------------------------------------
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// read/write values
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// ----------------------------------------------------------------------------
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bool wxFileConfig::Read(wxString *pstr,
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const char *szKey,
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const char *szDefault) const
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{
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PathChanger path(this, szKey);
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ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(path.Name());
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if (pEntry == NULL) {
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if( IsRecordingDefaults() )
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((wxFileConfig *)this)->Write(szKey,szDefault);
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*pstr = ExpandEnvVars(szDefault);
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return FALSE;
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}
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else {
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*pstr = ExpandEnvVars(pEntry->Value());
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return TRUE;
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}
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}
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const char *wxFileConfig::Read(const char *szKey,
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const char *szDefault) const
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{
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static wxString s_str;
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Read(&s_str, szKey, szDefault);
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return s_str.c_str();
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}
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bool wxFileConfig::Read(long *pl, const char *szKey, long lDefault) const
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{
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wxString str;
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if ( Read(&str, szKey) ) {
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*pl = atol(str);
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return TRUE;
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}
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else {
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*pl = lDefault;
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return FALSE;
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}
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}
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bool wxFileConfig::Write(const char *szKey, const char *szValue)
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{
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PathChanger path(this, szKey);
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wxString strName = path.Name();
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|
if ( strName.IsEmpty() ) {
|
|
// setting the value of a group is an error
|
|
wxASSERT_MSG( IsEmpty(szValue), _("can't set value of a group!") );
|
|
|
|
// ... except if it's empty in which case it's a way to force it's creation
|
|
m_pCurrentGroup->SetDirty();
|
|
|
|
// this will add a line for this group if it didn't have it before
|
|
(void)m_pCurrentGroup->GetGroupLine();
|
|
}
|
|
else {
|
|
// writing an entry
|
|
|
|
// check that the name is reasonable
|
|
if ( strName[0u] == wxCONFIG_IMMUTABLE_PREFIX ) {
|
|
wxLogError(_("Entry name can't start with '%c'."),
|
|
wxCONFIG_IMMUTABLE_PREFIX);
|
|
return FALSE;
|
|
}
|
|
|
|
for ( const char *pc = strName; *pc != '\0'; pc++ ) {
|
|
if ( !IsValid(*pc) ) {
|
|
wxLogError(_("Character '%c' is invalid in a config entry name."),
|
|
*pc);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
ConfigEntry *pEntry = m_pCurrentGroup->FindEntry(strName);
|
|
if ( pEntry == NULL )
|
|
pEntry = m_pCurrentGroup->AddEntry(strName);
|
|
|
|
pEntry->SetValue(szValue);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bool wxFileConfig::Write(const char *szKey, long lValue)
|
|
{
|
|
// ltoa() is not ANSI :-(
|
|
char szBuf[40]; // should be good for sizeof(long) <= 16 (128 bits)
|
|
sprintf(szBuf, "%ld", lValue);
|
|
return Write(szKey, szBuf);
|
|
}
|
|
|
|
bool wxFileConfig::Flush(bool /* bCurrentOnly */)
|
|
{
|
|
if ( LineListIsEmpty() || !m_pRootGroup->IsDirty() )
|
|
return TRUE;
|
|
|
|
wxTempFile file(m_strLocalFile);
|
|
|
|
if ( !file.IsOpened() ) {
|
|
wxLogError(_("can't open user configuration file."));
|
|
return FALSE;
|
|
}
|
|
|
|
// write all strings to file
|
|
for ( LineList *p = m_linesHead; p != NULL; p = p->Next() ) {
|
|
if ( !file.Write(p->Text() + wxTextFile::GetEOL()) ) {
|
|
wxLogError(_("can't write user configuration file."));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
return file.Commit();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// delete groups/entries
|
|
// ----------------------------------------------------------------------------
|
|
|
|
bool wxFileConfig::DeleteEntry(const char *szKey, bool bGroupIfEmptyAlso)
|
|
{
|
|
PathChanger path(this, szKey);
|
|
|
|
if ( !m_pCurrentGroup->DeleteEntry(path.Name()) )
|
|
return FALSE;
|
|
|
|
if ( bGroupIfEmptyAlso && m_pCurrentGroup->IsEmpty() ) {
|
|
if ( m_pCurrentGroup != m_pRootGroup ) {
|
|
ConfigGroup *pGroup = m_pCurrentGroup;
|
|
SetPath(".."); // changes m_pCurrentGroup!
|
|
m_pCurrentGroup->DeleteSubgroupByName(pGroup->Name());
|
|
}
|
|
//else: never delete the root group
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bool wxFileConfig::DeleteGroup(const char *szKey)
|
|
{
|
|
PathChanger path(this, szKey);
|
|
|
|
return m_pCurrentGroup->DeleteSubgroupByName(path.Name());
|
|
}
|
|
|
|
bool wxFileConfig::DeleteAll()
|
|
{
|
|
CleanUp();
|
|
|
|
const char *szFile = m_strLocalFile;
|
|
|
|
if ( remove(szFile) == -1 )
|
|
wxLogSysError(_("can't delete user configuration file '%s'"), szFile);
|
|
|
|
m_strLocalFile = m_strGlobalFile = "";
|
|
Init();
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// linked list functions
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// append a new line to the end of the list
|
|
wxFileConfig::LineList *wxFileConfig::LineListAppend(const wxString& str)
|
|
{
|
|
LineList *pLine = new LineList(str);
|
|
|
|
if ( m_linesTail == NULL ) {
|
|
// list is empty
|
|
m_linesHead = pLine;
|
|
}
|
|
else {
|
|
// adjust pointers
|
|
m_linesTail->SetNext(pLine);
|
|
pLine->SetPrev(m_linesTail);
|
|
}
|
|
|
|
m_linesTail = pLine;
|
|
return m_linesTail;
|
|
}
|
|
|
|
// insert a new line after the given one or in the very beginning if !pLine
|
|
wxFileConfig::LineList *wxFileConfig::LineListInsert(const wxString& str,
|
|
LineList *pLine)
|
|
{
|
|
if ( pLine == m_linesTail )
|
|
return LineListAppend(str);
|
|
|
|
LineList *pNewLine = new LineList(str);
|
|
if ( pLine == NULL ) {
|
|
// prepend to the list
|
|
pNewLine->SetNext(m_linesHead);
|
|
m_linesHead->SetPrev(pNewLine);
|
|
m_linesHead = pNewLine;
|
|
}
|
|
else {
|
|
// insert before pLine
|
|
LineList *pNext = pLine->Next();
|
|
pNewLine->SetNext(pNext);
|
|
pNewLine->SetPrev(pLine);
|
|
pNext->SetPrev(pNewLine);
|
|
pLine->SetNext(pNewLine);
|
|
}
|
|
|
|
return pNewLine;
|
|
}
|
|
|
|
void wxFileConfig::LineListRemove(LineList *pLine)
|
|
{
|
|
LineList *pPrev = pLine->Prev(),
|
|
*pNext = pLine->Next();
|
|
|
|
// first entry?
|
|
if ( pPrev == NULL )
|
|
m_linesHead = pNext;
|
|
else
|
|
pPrev->SetNext(pNext);
|
|
|
|
// last entry?
|
|
if ( pNext == NULL )
|
|
m_linesTail = pPrev;
|
|
else
|
|
pNext->SetPrev(pPrev);
|
|
|
|
delete pLine;
|
|
}
|
|
|
|
bool wxFileConfig::LineListIsEmpty()
|
|
{
|
|
return m_linesHead == NULL;
|
|
}
|
|
|
|
// ============================================================================
|
|
// wxFileConfig::ConfigGroup
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ctor/dtor
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// ctor
|
|
wxFileConfig::ConfigGroup::ConfigGroup(wxFileConfig::ConfigGroup *pParent,
|
|
const wxString& strName,
|
|
wxFileConfig *pConfig)
|
|
: m_aEntries(CompareEntries),
|
|
m_aSubgroups(CompareGroups),
|
|
m_strName(strName)
|
|
{
|
|
m_pConfig = pConfig;
|
|
m_pParent = pParent;
|
|
m_bDirty = FALSE;
|
|
m_pLine = NULL;
|
|
|
|
m_pLastEntry = NULL;
|
|
m_pLastGroup = NULL;
|
|
}
|
|
|
|
// dtor deletes all children
|
|
wxFileConfig::ConfigGroup::~ConfigGroup()
|
|
{
|
|
// entries
|
|
uint n, nCount = m_aEntries.Count();
|
|
for ( n = 0; n < nCount; n++ )
|
|
delete m_aEntries[n];
|
|
|
|
// subgroups
|
|
nCount = m_aSubgroups.Count();
|
|
for ( n = 0; n < nCount; n++ )
|
|
delete m_aSubgroups[n];
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// line
|
|
// ----------------------------------------------------------------------------
|
|
|
|
void wxFileConfig::ConfigGroup::SetLine(LineList *pLine)
|
|
{
|
|
wxASSERT( m_pLine == NULL ); // shouldn't be called twice
|
|
|
|
m_pLine = pLine;
|
|
}
|
|
|
|
/*
|
|
This is a bit complicated, so let me explain it in details. All lines that
|
|
were read from the local file (the only one we will ever modify) are stored
|
|
in a (doubly) linked list. Our problem is to know at which position in this
|
|
list should we insert the new entries/subgroups. To solve it we keep three
|
|
variables for each group: m_pLine, m_pLastEntry and m_pLastGroup.
|
|
|
|
m_pLine points to the line containing "[group_name]"
|
|
m_pLastEntry points to the last entry of this group in the local file.
|
|
m_pLastGroup subgroup
|
|
|
|
Initially, they're NULL all three. When the group (an entry/subgroup) is read
|
|
from the local file, the corresponding variable is set. However, if the group
|
|
was read from the global file and then modified or created by the application
|
|
these variables are still NULL and we need to create the corresponding lines.
|
|
See the following functions (and comments preceding them) for the details of
|
|
how we do it.
|
|
|
|
Also, when our last entry/group are deleted we need to find the new last
|
|
element - the code in DeleteEntry/Subgroup does this by backtracking the list
|
|
of lines until it either founds an entry/subgroup (and this is the new last
|
|
element) or the m_pLine of the group, in which case there are no more entries
|
|
(or subgroups) left and m_pLast<element> becomes NULL.
|
|
|
|
NB: This last problem could be avoided for entries if we added new entries
|
|
immediately after m_pLine, but in this case the entries would appear
|
|
backwards in the config file (OTOH, it's not that important) and as we
|
|
would still need to do it for the subgroups the code wouldn't have been
|
|
significantly less complicated.
|
|
*/
|
|
|
|
// Return the line which contains "[our name]". If we're still not in the list,
|
|
// add our line to it immediately after the last line of our parent group if we
|
|
// have it or in the very beginning if we're the root group.
|
|
wxFileConfig::LineList *wxFileConfig::ConfigGroup::GetGroupLine()
|
|
{
|
|
if ( m_pLine == NULL ) {
|
|
ConfigGroup *pParent = Parent();
|
|
|
|
// this group wasn't present in local config file, add it now
|
|
if ( pParent != NULL ) {
|
|
wxString strFullName;
|
|
strFullName << "[" << GetFullName().c_str() + 1 << "]"; // +1: no '/'
|
|
m_pLine = m_pConfig->LineListInsert(strFullName,
|
|
pParent->GetLastGroupLine());
|
|
pParent->SetLastGroup(this); // we're surely after all the others
|
|
}
|
|
else {
|
|
// we return NULL, so that LineListInsert() will insert us in the
|
|
// very beginning
|
|
}
|
|
}
|
|
|
|
return m_pLine;
|
|
}
|
|
|
|
// Return the last line belonging to the subgroups of this group (after which
|
|
// we can add a new subgroup), if we don't have any subgroups or entries our
|
|
// last line is the group line (m_pLine) itself.
|
|
wxFileConfig::LineList *wxFileConfig::ConfigGroup::GetLastGroupLine()
|
|
{
|
|
// if we have any subgroups, our last line is the last line of the last
|
|
// subgroup
|
|
if ( m_pLastGroup != NULL ) {
|
|
wxFileConfig::LineList *pLine = m_pLastGroup->GetLastGroupLine();
|
|
|
|
wxASSERT( pLine != NULL ); // last group must have !NULL associated line
|
|
return pLine;
|
|
}
|
|
|
|
// no subgroups, so the last line is the line of thelast entry (if any)
|
|
return GetLastEntryLine();
|
|
}
|
|
|
|
// return the last line belonging to the entries of this group (after which
|
|
// we can add a new entry), if we don't have any entries we will add the new
|
|
// one immediately after the group line itself.
|
|
wxFileConfig::LineList *wxFileConfig::ConfigGroup::GetLastEntryLine()
|
|
{
|
|
if ( m_pLastEntry != NULL ) {
|
|
wxFileConfig::LineList *pLine = m_pLastEntry->GetLine();
|
|
|
|
wxASSERT( pLine != NULL ); // last entry must have !NULL associated line
|
|
return pLine;
|
|
}
|
|
|
|
// no entries: insert after the group header
|
|
return GetGroupLine();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// group name
|
|
// ----------------------------------------------------------------------------
|
|
|
|
wxString wxFileConfig::ConfigGroup::GetFullName() const
|
|
{
|
|
if ( Parent() )
|
|
return Parent()->GetFullName() + wxCONFIG_PATH_SEPARATOR + Name();
|
|
else
|
|
return "";
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// find an item
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// use binary search because the array is sorted
|
|
wxFileConfig::ConfigEntry *
|
|
wxFileConfig::ConfigGroup::FindEntry(const char *szName) const
|
|
{
|
|
uint i,
|
|
lo = 0,
|
|
hi = m_aEntries.Count();
|
|
int res;
|
|
wxFileConfig::ConfigEntry *pEntry;
|
|
|
|
while ( lo < hi ) {
|
|
i = (lo + hi)/2;
|
|
pEntry = m_aEntries[i];
|
|
|
|
#if wxCONFIG_CASE_SENSITIVE
|
|
res = strcmp(pEntry->Name(), szName);
|
|
#else
|
|
res = Stricmp(pEntry->Name(), szName);
|
|
#endif
|
|
|
|
if ( res > 0 )
|
|
hi = i;
|
|
else if ( res < 0 )
|
|
lo = i + 1;
|
|
else
|
|
return pEntry;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
wxFileConfig::ConfigGroup *
|
|
wxFileConfig::ConfigGroup::FindSubgroup(const char *szName) const
|
|
{
|
|
uint i,
|
|
lo = 0,
|
|
hi = m_aSubgroups.Count();
|
|
int res;
|
|
wxFileConfig::ConfigGroup *pGroup;
|
|
|
|
while ( lo < hi ) {
|
|
i = (lo + hi)/2;
|
|
pGroup = m_aSubgroups[i];
|
|
|
|
#if wxCONFIG_CASE_SENSITIVE
|
|
res = strcmp(pGroup->Name(), szName);
|
|
#else
|
|
res = Stricmp(pGroup->Name(), szName);
|
|
#endif
|
|
|
|
if ( res > 0 )
|
|
hi = i;
|
|
else if ( res < 0 )
|
|
lo = i + 1;
|
|
else
|
|
return pGroup;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// create a new item
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// create a new entry and add it to the current group
|
|
wxFileConfig::ConfigEntry *
|
|
wxFileConfig::ConfigGroup::AddEntry(const wxString& strName, int nLine)
|
|
{
|
|
wxASSERT( FindEntry(strName) == NULL );
|
|
|
|
ConfigEntry *pEntry = new ConfigEntry(this, strName, nLine);
|
|
m_aEntries.Add(pEntry);
|
|
|
|
return pEntry;
|
|
}
|
|
|
|
// create a new group and add it to the current group
|
|
wxFileConfig::ConfigGroup *
|
|
wxFileConfig::ConfigGroup::AddSubgroup(const wxString& strName)
|
|
{
|
|
wxASSERT( FindSubgroup(strName) == NULL );
|
|
|
|
ConfigGroup *pGroup = new ConfigGroup(this, strName, m_pConfig);
|
|
m_aSubgroups.Add(pGroup);
|
|
|
|
return pGroup;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// delete an item
|
|
// ----------------------------------------------------------------------------
|
|
|
|
/*
|
|
The delete operations are _very_ slow if we delete the last item of this
|
|
group (see comments before GetXXXLineXXX functions for more details),
|
|
so it's much better to start with the first entry/group if we want to
|
|
delete several of them.
|
|
*/
|
|
|
|
bool wxFileConfig::ConfigGroup::DeleteSubgroupByName(const char *szName)
|
|
{
|
|
return DeleteSubgroup(FindSubgroup(szName));
|
|
}
|
|
|
|
// doesn't delete the subgroup itself, but does remove references to it from
|
|
// all other data structures (and normally the returned pointer should be
|
|
// deleted a.s.a.p. because there is nothing much to be done with it anyhow)
|
|
bool wxFileConfig::ConfigGroup::DeleteSubgroup(ConfigGroup *pGroup)
|
|
{
|
|
wxCHECK( pGroup != NULL, FALSE ); // deleting non existing group?
|
|
|
|
// delete all entries
|
|
uint nCount = pGroup->m_aEntries.Count();
|
|
for ( uint nEntry = 0; nEntry < nCount; nEntry++ ) {
|
|
LineList *pLine = pGroup->m_aEntries[nEntry]->GetLine();
|
|
if ( pLine != NULL )
|
|
m_pConfig->LineListRemove(pLine);
|
|
}
|
|
|
|
// and subgroups of this sungroup
|
|
nCount = pGroup->m_aSubgroups.Count();
|
|
for ( uint nGroup = 0; nGroup < nCount; nGroup++ ) {
|
|
pGroup->DeleteSubgroup(pGroup->m_aSubgroups[nGroup]);
|
|
}
|
|
|
|
LineList *pLine = pGroup->m_pLine;
|
|
if ( pLine != NULL ) {
|
|
// notice that we may do this test inside the previous "if" because the
|
|
// last entry's line is surely !NULL
|
|
if ( pGroup == m_pLastGroup ) {
|
|
// our last entry is being deleted - find the last one which stays
|
|
wxASSERT( m_pLine != NULL ); // we have a subgroup with !NULL pLine...
|
|
|
|
// go back until we find a subgroup or reach the group's line
|
|
ConfigGroup *pNewLast = NULL;
|
|
uint n, nSubgroups = m_aSubgroups.Count();
|
|
LineList *pl;
|
|
for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() ) {
|
|
// is it our subgroup?
|
|
for ( n = 0; (pNewLast == NULL) && (n < nSubgroups); n++ ) {
|
|
// do _not_ call GetGroupLine! we don't want to add it to the local
|
|
// file if it's not already there
|
|
if ( m_aSubgroups[n]->m_pLine == m_pLine )
|
|
pNewLast = m_aSubgroups[n];
|
|
}
|
|
|
|
if ( pNewLast != NULL ) // found?
|
|
break;
|
|
}
|
|
|
|
if ( pl == m_pLine ) {
|
|
wxASSERT( !pNewLast ); // how comes it has the same line as we?
|
|
|
|
// we've reached the group line without finding any subgroups
|
|
m_pLastGroup = NULL;
|
|
}
|
|
else
|
|
m_pLastGroup = pNewLast;
|
|
}
|
|
|
|
m_pConfig->LineListRemove(pLine);
|
|
}
|
|
|
|
SetDirty();
|
|
|
|
m_aSubgroups.Remove(pGroup);
|
|
delete pGroup;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
bool wxFileConfig::ConfigGroup::DeleteEntry(const char *szName)
|
|
{
|
|
ConfigEntry *pEntry = FindEntry(szName);
|
|
wxCHECK( pEntry != NULL, FALSE ); // deleting non existing item?
|
|
|
|
LineList *pLine = pEntry->GetLine();
|
|
if ( pLine != NULL ) {
|
|
// notice that we may do this test inside the previous "if" because the
|
|
// last entry's line is surely !NULL
|
|
if ( pEntry == m_pLastEntry ) {
|
|
// our last entry is being deleted - find the last one which stays
|
|
wxASSERT( m_pLine != NULL ); // if we have an entry with !NULL pLine...
|
|
|
|
// go back until we find another entry or reach the group's line
|
|
ConfigEntry *pNewLast = NULL;
|
|
uint n, nEntries = m_aEntries.Count();
|
|
LineList *pl;
|
|
for ( pl = pLine->Prev(); pl != m_pLine; pl = pl->Prev() ) {
|
|
// is it our subgroup?
|
|
for ( n = 0; (pNewLast == NULL) && (n < nEntries); n++ ) {
|
|
if ( m_aEntries[n]->GetLine() == m_pLine )
|
|
pNewLast = m_aEntries[n];
|
|
}
|
|
|
|
if ( pNewLast != NULL ) // found?
|
|
break;
|
|
}
|
|
|
|
if ( pl == m_pLine ) {
|
|
wxASSERT( !pNewLast ); // how comes it has the same line as we?
|
|
|
|
// we've reached the group line without finding any subgroups
|
|
m_pLastEntry = NULL;
|
|
}
|
|
else
|
|
m_pLastEntry = pNewLast;
|
|
}
|
|
|
|
m_pConfig->LineListRemove(pLine);
|
|
}
|
|
|
|
// we must be written back for the changes to be saved
|
|
SetDirty();
|
|
|
|
m_aEntries.Remove(pEntry);
|
|
delete pEntry;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
void wxFileConfig::ConfigGroup::SetDirty()
|
|
{
|
|
m_bDirty = TRUE;
|
|
if ( Parent() != NULL ) // propagate upwards
|
|
Parent()->SetDirty();
|
|
}
|
|
|
|
// ============================================================================
|
|
// wxFileConfig::ConfigEntry
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ctor
|
|
// ----------------------------------------------------------------------------
|
|
wxFileConfig::ConfigEntry::ConfigEntry(wxFileConfig::ConfigGroup *pParent,
|
|
const wxString& strName,
|
|
int nLine)
|
|
: m_strName(strName)
|
|
{
|
|
wxASSERT( !strName.IsEmpty() );
|
|
|
|
m_pParent = pParent;
|
|
m_nLine = nLine;
|
|
m_pLine = NULL;
|
|
|
|
m_bDirty = FALSE;
|
|
|
|
m_bImmutable = strName[0] == wxCONFIG_IMMUTABLE_PREFIX;
|
|
if ( m_bImmutable )
|
|
m_strName.erase(0, 1); // remove first character
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// set value
|
|
// ----------------------------------------------------------------------------
|
|
|
|
void wxFileConfig::ConfigEntry::SetLine(LineList *pLine)
|
|
{
|
|
if ( m_pLine != NULL ) {
|
|
wxLogWarning(_("entry '%s' appears more than once in group '%s'"),
|
|
Name().c_str(), m_pParent->GetFullName().c_str());
|
|
}
|
|
|
|
m_pLine = pLine;
|
|
Group()->SetLastEntry(this);
|
|
}
|
|
|
|
// second parameter is FALSE if we read the value from file and prevents the
|
|
// entry from being marked as 'dirty'
|
|
void wxFileConfig::ConfigEntry::SetValue(const wxString& strValue, bool bUser)
|
|
{
|
|
if ( bUser && IsImmutable() ) {
|
|
wxLogWarning(_("attempt to change immutable key '%s' ignored."),
|
|
Name().c_str());
|
|
return;
|
|
}
|
|
|
|
// do nothing if it's the same value
|
|
if ( strValue == m_strValue )
|
|
return;
|
|
|
|
m_strValue = strValue;
|
|
|
|
if ( bUser ) {
|
|
wxString strVal = FilterOut(strValue);
|
|
wxString strLine;
|
|
strLine << m_strName << " = " << strVal;
|
|
|
|
if ( m_pLine != NULL ) {
|
|
// entry was read from the local config file, just modify the line
|
|
m_pLine->SetText(strLine);
|
|
}
|
|
else {
|
|
// add a new line to the file
|
|
wxASSERT( m_nLine == NOT_FOUND ); // consistency check
|
|
|
|
m_pLine = Group()->Config()->LineListInsert(strLine,
|
|
Group()->GetLastEntryLine());
|
|
Group()->SetLastEntry(this);
|
|
}
|
|
|
|
SetDirty();
|
|
}
|
|
}
|
|
|
|
void wxFileConfig::ConfigEntry::SetDirty()
|
|
{
|
|
m_bDirty = TRUE;
|
|
Group()->SetDirty();
|
|
}
|
|
|
|
// ============================================================================
|
|
// global functions
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// compare functions for array sorting
|
|
// ----------------------------------------------------------------------------
|
|
|
|
int CompareEntries(wxFileConfig::ConfigEntry *p1,
|
|
wxFileConfig::ConfigEntry *p2)
|
|
{
|
|
#if wxCONFIG_CASE_SENSITIVE
|
|
return strcmp(p1->Name(), p2->Name());
|
|
#else
|
|
return Stricmp(p1->Name(), p2->Name());
|
|
#endif
|
|
}
|
|
|
|
int CompareGroups(wxFileConfig::ConfigGroup *p1,
|
|
wxFileConfig::ConfigGroup *p2)
|
|
{
|
|
#if wxCONFIG_CASE_SENSITIVE
|
|
return strcmp(p1->Name(), p2->Name());
|
|
#else
|
|
return Stricmp(p1->Name(), p2->Name());
|
|
#endif
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// filter functions
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// undo FilterOut
|
|
wxString FilterIn(const wxString& str)
|
|
{
|
|
wxString strResult;
|
|
strResult.Alloc(str.Len());
|
|
|
|
bool bQuoted = !str.IsEmpty() && str[0] == '"';
|
|
|
|
for ( uint n = bQuoted ? 1 : 0; n < str.Len(); n++ ) {
|
|
if ( str[n] == '\\' ) {
|
|
switch ( str[++n] ) {
|
|
case 'n':
|
|
strResult += '\n';
|
|
break;
|
|
|
|
case 'r':
|
|
strResult += '\r';
|
|
break;
|
|
|
|
case 't':
|
|
strResult += '\t';
|
|
break;
|
|
|
|
case '\\':
|
|
strResult += '\\';
|
|
break;
|
|
|
|
case '"':
|
|
strResult += '"';
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
if ( str[n] != '"' || !bQuoted )
|
|
strResult += str[n];
|
|
else if ( n != str.Len() - 1 ) {
|
|
wxLogWarning(_("unexpected \" at position %d in '%s'."),
|
|
n, str.c_str());
|
|
}
|
|
//else: it's the last quote of a quoted string, ok
|
|
}
|
|
}
|
|
|
|
return strResult;
|
|
}
|
|
|
|
// quote the string before writing it to file
|
|
wxString FilterOut(const wxString& str)
|
|
{
|
|
if(str.IsEmpty())
|
|
return str;
|
|
|
|
wxString strResult;
|
|
strResult.Alloc(str.Len());
|
|
|
|
// quoting is necessary to preserve spaces in the beginning of the string
|
|
bool bQuote = isspace(str[0]) || str[0] == '"';
|
|
|
|
if ( bQuote )
|
|
strResult += '"';
|
|
|
|
char c;
|
|
for ( uint n = 0; n < str.Len(); n++ ) {
|
|
switch ( str[n] ) {
|
|
case '\n':
|
|
c = 'n';
|
|
break;
|
|
|
|
case '\r':
|
|
c = 'r';
|
|
break;
|
|
|
|
case '\t':
|
|
c = 't';
|
|
break;
|
|
|
|
case '\\':
|
|
c = '\\';
|
|
break;
|
|
|
|
case '"':
|
|
if ( bQuote ) {
|
|
c = '"';
|
|
break;
|
|
}
|
|
//else: fall through
|
|
|
|
default:
|
|
strResult += str[n];
|
|
continue; // nothing special to do
|
|
}
|
|
|
|
// we get here only for special characters
|
|
strResult << '\\' << c;
|
|
}
|
|
|
|
if ( bQuote )
|
|
strResult += '"';
|
|
|
|
return strResult;
|
|
}
|