X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b568d04ffa191f9e3b643ca33526094eca0ba304..b6c8bd695963b52cec60cf2247bf4b1651d889d8:/src/msw/regconf.cpp diff --git a/src/msw/regconf.cpp b/src/msw/regconf.cpp index e62511ca68..01f2468803 100644 --- a/src/msw/regconf.cpp +++ b/src/msw/regconf.cpp @@ -22,11 +22,15 @@ #ifndef WX_PRECOMP #include "wx/string.h" + #include "wx/intl.h" #endif //WX_PRECOMP #include "wx/event.h" #include "wx/app.h" #include "wx/log.h" + +#if wxUSE_CONFIG + #include "wx/config.h" #ifndef __WIN16__ @@ -109,14 +113,28 @@ wxRegConfig::wxRegConfig(const wxString& appName, const wxString& vendorName, //else: we don't need to do all the complicated stuff above wxString str = strLocal.IsEmpty() ? strRoot : strLocal; + + // as we're going to change the name of these keys fairly often and as + // there are only few of wxRegConfig objects (usually 1), we can allow + // ourselves to be generous and spend some memory to significantly improve + // performance of SetPath() + static const size_t MEMORY_PREALLOC = 512; + + m_keyLocalRoot.ReserveMemoryForName(MEMORY_PREALLOC); + m_keyLocal.ReserveMemoryForName(MEMORY_PREALLOC); + m_keyLocalRoot.SetName(wxRegKey::HKCU, SOFTWARE_KEY + str); - m_keyLocal.SetName(m_keyLocalRoot, ""); + m_keyLocal.SetName(m_keyLocalRoot, _T("")); if ( bDoUseGlobal ) { str = strGlobal.IsEmpty() ? strRoot : strGlobal; + + m_keyGlobalRoot.ReserveMemoryForName(MEMORY_PREALLOC); + m_keyGlobal.ReserveMemoryForName(MEMORY_PREALLOC); + m_keyGlobalRoot.SetName(wxRegKey::HKLM, SOFTWARE_KEY + str); - m_keyGlobal.SetName(m_keyGlobalRoot, ""); + m_keyGlobal.SetName(m_keyGlobalRoot, _T("")); } // Create() will Open() if key already exists @@ -131,6 +149,7 @@ wxRegConfig::wxRegConfig(const wxString& appName, const wxString& vendorName, { wxLogNull nolog; m_keyGlobalRoot.Open(); + m_keyGlobal.Open(); } } @@ -142,50 +161,222 @@ wxRegConfig::~wxRegConfig() // ---------------------------------------------------------------------------- // path management // ---------------------------------------------------------------------------- + +// this function is called a *lot* of times (as I learned after seeing from +// profiler output that it is called ~12000 times from Mahogany start up code!) +// so it is important to optimize it - in particular, avoid using generic +// string functions here and do everything manually because it is faster +// +// I still kept the old version to be able to check that the optimized code has +// the same output as the non optimized version. void wxRegConfig::SetPath(const wxString& strPath) { - wxArrayString aParts; + // remember the old path + wxString strOldPath = m_strPath; - // because GetPath() returns "" when we're at root, we must understand - // empty string as "/" - if ( strPath.IsEmpty() || (strPath[0] == wxCONFIG_PATH_SEPARATOR) ) { - // absolute path - wxSplitPath(aParts, strPath); - } - else { - // relative path, combine with current one - wxString strFullPath = GetPath(); - strFullPath << wxCONFIG_PATH_SEPARATOR << strPath; - wxSplitPath(aParts, strFullPath); - } +#ifdef WX_DEBUG_SET_PATH // non optimized version kept here for testing + wxString m_strPathAlt; - // recombine path parts in one variable - wxString strOldPath = m_strPath, strRegPath; - m_strPath.Empty(); - for ( size_t n = 0; n < aParts.Count(); n++ ) { - strRegPath << '\\' << aParts[n]; - m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n]; - } + { + wxArrayString aParts; + + // because GetPath() returns "" when we're at root, we must understand + // empty string as "/" + if ( strPath.IsEmpty() || (strPath[0] == wxCONFIG_PATH_SEPARATOR) ) { + // absolute path + wxSplitPath(aParts, strPath); + } + else { + // relative path, combine with current one + wxString strFullPath = GetPath(); + strFullPath << wxCONFIG_PATH_SEPARATOR << strPath; + wxSplitPath(aParts, strFullPath); + } + + // recombine path parts in one variable + wxString strRegPath; + m_strPathAlt.Empty(); + for ( size_t n = 0; n < aParts.Count(); n++ ) { + strRegPath << '\\' << aParts[n]; + m_strPathAlt << wxCONFIG_PATH_SEPARATOR << aParts[n]; + } + } +#endif // 0 - if ( m_strPath == strOldPath ) - return; + // check for the most common case first + if ( strPath.empty() ) + { + m_strPath = wxCONFIG_PATH_SEPARATOR; + } + else // not root + { + // construct the full path + wxString strFullPath; + if ( strPath[0u] == wxCONFIG_PATH_SEPARATOR ) + { + // absolute path + strFullPath = strPath; + } + else // relative path + { + strFullPath.reserve(2*m_strPath.length()); + + strFullPath << m_strPath << wxCONFIG_PATH_SEPARATOR << strPath; + } + + // simplify it: we need to handle ".." here + + // count the total number of slashes we have to know if we can go upper + size_t totalSlashes = 0; + + // position of the last slash to be able to backtrack to it quickly if + // needed, but we set it to -1 if we don't have a valid position + // + // we only remember the last position which means that we handle ".." + // quite efficiently but not "../.." - however the latter should be + // much more rare, so it is probably ok + int posLastSlash = -1; + + const wxChar *src = strFullPath.c_str(); + size_t len = strFullPath.length(); + const wxChar *end = src + len; + + wxChar *dst = m_strPath.GetWriteBuf(len); + wxChar *start = dst; + + for ( ; src < end; src++, dst++ ) + { + if ( *src == wxCONFIG_PATH_SEPARATOR ) + { + // check for "/.." + + // note that we don't have to check for src < end here as + // *end == 0 so can't be '.' + if ( src[1] == _T('.') && src[2] == _T('.') && + (src + 3 == end || src[3] == wxCONFIG_PATH_SEPARATOR) ) + { + if ( !totalSlashes ) + { + wxLogWarning(_("'%s' has extra '..', ignored."), + strFullPath.c_str()); + } + else // return to the previous path component + { + // do we already have its position? + if ( posLastSlash == -1 ) + { + // no, find it: note that we are sure to have one + // because totalSlashes > 0 so we don't have to + // check the boundary condition below + + // this is more efficient than strrchr() + while ( *dst != wxCONFIG_PATH_SEPARATOR ) + { + dst--; + } + } + else // the position of last slash was stored + { + // go directly there + dst = start + posLastSlash; + + // invalidate posLastSlash + posLastSlash = -1; + } + + // this shouldn't happen + wxASSERT_MSG( *dst == wxCONFIG_PATH_SEPARATOR, + _T("error in wxRegConfig::SetPath") ); + + // we killed one + totalSlashes--; + } + + // skip both dots + src += 2; + } + else // not "/.." + { + if ( (dst == start) || (dst[-1] != wxCONFIG_PATH_SEPARATOR) ) + { + *dst = wxCONFIG_PATH_SEPARATOR; + + posLastSlash = dst - start; + + totalSlashes++; + } + //else: nothing to do, we squeeze several subseuquent + // slashes into one + } + } + else // normal character + { + // just copy + *dst = *src; + } + } + + // NUL terminate the string + if ( dst[-1] == wxCONFIG_PATH_SEPARATOR && (dst != start + 1) ) + { + // if it has a trailing slash we remove it unless it is the only + // string character + dst--; + } + + *dst = _T('\0'); + + m_strPath.UngetWriteBuf(dst - start); + } - // as we create the registry key when SetPath(key) is done, we can be left - // with plenty of empty keys if this was only done to try to read some value - // which, in fact, doesn't exist - to prevent this from happening we - // automatically delete the old key if it was empty - if ( m_keyLocal.IsEmpty() ) - { - m_keyLocal.DeleteSelf(); - } +#ifdef WX_DEBUG_SET_PATH + wxASSERT( m_strPath == m_strPathAlt ); +#endif - // change current key(s) - m_keyLocal.SetName(m_keyLocalRoot, strRegPath); - m_keyGlobal.SetName(m_keyGlobalRoot, strRegPath); - m_keyLocal.Create(); + if ( m_strPath == strOldPath ) + return; - wxLogNull nolog; - m_keyGlobal.Open(); + // registry APIs want backslashes instead of slashes + wxString strRegPath; + size_t len = m_strPath.length(); + + const wxChar *src = m_strPath.c_str(); + wxChar *dst = strRegPath.GetWriteBuf(len); + + const wxChar *end = src + len; + for ( ; src < end; src++, dst++ ) + { + if ( *src == wxCONFIG_PATH_SEPARATOR ) + *dst = _T('\\'); + else + *dst = *src; + } + + strRegPath.UngetWriteBuf(len); + + // this is not needed any longer as we don't create keys unnecessarily any + // more (now it is done on demand, i.e. only when they're going to contain + // something) +#if 0 + // as we create the registry key when SetPath(key) is done, we can be left + // with plenty of empty keys if this was only done to try to read some + // value which, in fact, doesn't exist - to prevent this from happening we + // automatically delete the old key if it was empty + if ( m_keyLocal.Exists() && LocalKey().IsEmpty() ) + { + m_keyLocal.DeleteSelf(); + } +#endif // 0 + + // change current key(s) + m_keyLocal.SetName(m_keyLocalRoot, strRegPath); + m_keyGlobal.SetName(m_keyGlobalRoot, strRegPath); + + // don't create it right now, wait until it is accessed + //m_keyLocal.Create(); + + wxLogNull nolog; + m_keyGlobal.Open(); } // ---------------------------------------------------------------------------- @@ -214,19 +405,25 @@ bool wxRegConfig::GetNextGroup(wxString& str, long& lIndex) const // are we already enumerating local entries? if ( m_keyGlobal.IsOpened() && !IS_LOCAL_INDEX(lIndex) ) { // try to find a global entry which doesn't appear locally - do { - if ( !m_keyGlobal.GetNextKey(str, lIndex) ) { - // no more global entries - lIndex |= LOCAL_MASK; - break; + while ( m_keyGlobal.GetNextKey(str, lIndex) ) { + if ( !m_keyLocal.Exists() || !LocalKey().HasSubKey(str) ) { + // ok, found one - return it + return TRUE; } - } while( m_keyLocal.HasSubKey(str) ); + } + + // no more global entries + lIndex |= LOCAL_MASK; } + // if we don't have the key at all, don't try to enumerate anything under it + if ( !m_keyLocal.Exists() ) + return FALSE; + // much easier with local entries: get the next one we find // (don't forget to clear our flag bit and set it again later) lIndex &= ~LOCAL_MASK; - bool bOk = m_keyLocal.GetNextKey(str, lIndex); + bool bOk = LocalKey().GetNextKey(str, lIndex); lIndex |= LOCAL_MASK; return bOk; @@ -243,19 +440,25 @@ bool wxRegConfig::GetNextEntry(wxString& str, long& lIndex) const // are we already enumerating local entries? if ( m_keyGlobal.IsOpened() && !IS_LOCAL_INDEX(lIndex) ) { // try to find a global entry which doesn't appear locally - do { - if ( !m_keyGlobal.GetNextValue(str, lIndex) ) { - // no more global entries - lIndex |= LOCAL_MASK; - break; + while ( m_keyGlobal.GetNextValue(str, lIndex) ) { + if ( !m_keyLocal.Exists() || !LocalKey().HasValue(str) ) { + // ok, found one - return it + return TRUE; } - } while( m_keyLocal.HasValue(str) ); + } + + // no more global entries + lIndex |= LOCAL_MASK; } + // if we don't have the key at all, don't try to enumerate anything under it + if ( !m_keyLocal.Exists() ) + return FALSE; + // much easier with local entries: get the next one we find // (don't forget to clear our flag bit and set it again later) lIndex &= ~LOCAL_MASK; - bool bOk = m_keyLocal.GetNextValue(str, lIndex); + bool bOk = LocalKey().GetNextValue(str, lIndex); lIndex |= LOCAL_MASK; return bOk; @@ -305,7 +508,8 @@ bool wxRegConfig::HasGroup(const wxString& key) const wxString strName(path.Name()); - return m_keyLocal.HasSubKey(strName) || m_keyGlobal.HasSubKey(strName); + return (m_keyLocal.Exists() && LocalKey().HasSubKey(strName)) || + m_keyGlobal.HasSubKey(strName); } bool wxRegConfig::HasEntry(const wxString& key) const @@ -314,7 +518,8 @@ bool wxRegConfig::HasEntry(const wxString& key) const wxString strName(path.Name()); - return m_keyLocal.HasValue(strName) || m_keyGlobal.HasValue(strName); + return (m_keyLocal.Exists() && LocalKey().HasValue(strName)) || + m_keyGlobal.HasValue(strName); } wxConfigBase::EntryType wxRegConfig::GetEntryType(const wxString& key) const @@ -324,7 +529,7 @@ wxConfigBase::EntryType wxRegConfig::GetEntryType(const wxString& key) const wxString strName(path.Name()); bool isNumeric; - if ( m_keyLocal.HasValue(strName) ) + if ( m_keyLocal.Exists() && LocalKey().HasValue(strName) ) isNumeric = m_keyLocal.IsNumericValue(strName); else if ( m_keyGlobal.HasValue(strName) ) isNumeric = m_keyGlobal.IsNumericValue(strName); @@ -348,7 +553,7 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr) const // overriden by the local key with the same name if ( IsImmutable(path.Name()) ) { if ( TryGetValue(m_keyGlobal, path.Name(), *pStr) ) { - if ( m_keyLocal.HasValue(path.Name()) ) { + if ( m_keyLocal.Exists() && LocalKey().HasValue(path.Name()) ) { wxLogWarning(wxT("User value for immutable key '%s' ignored."), path.Name().c_str()); } @@ -362,7 +567,7 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr) const } // first try local key - if ( TryGetValue(m_keyLocal, path.Name(), *pStr) || + if ( (m_keyLocal.Exists() && TryGetValue(LocalKey(), path.Name(), *pStr)) || (bQueryGlobal && TryGetValue(m_keyGlobal, path.Name(), *pStr)) ) { // nothing to do @@ -384,7 +589,7 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr, // overriden by the local key with the same name if ( IsImmutable(path.Name()) ) { if ( TryGetValue(m_keyGlobal, path.Name(), *pStr) ) { - if ( m_keyLocal.HasValue(path.Name()) ) { + if ( m_keyLocal.Exists() && LocalKey().HasValue(path.Name()) ) { wxLogWarning(wxT("User value for immutable key '%s' ignored."), path.Name().c_str()); } @@ -398,7 +603,7 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr, } // first try local key - if ( TryGetValue(m_keyLocal, path.Name(), *pStr) || + if ( (m_keyLocal.Exists() && TryGetValue(LocalKey(), path.Name(), *pStr)) || (bQueryGlobal && TryGetValue(m_keyGlobal, path.Name(), *pStr)) ) { *pStr = wxConfigBase::ExpandEnvVars(*pStr); return TRUE; @@ -427,7 +632,7 @@ bool wxRegConfig::Read(const wxString& key, long *plResult) const // overriden by the local key with the same name if ( IsImmutable(path.Name()) ) { if ( TryGetValue(m_keyGlobal, path.Name(), plResult) ) { - if ( m_keyLocal.HasValue(path.Name()) ) { + if ( m_keyLocal.Exists() && LocalKey().HasValue(path.Name()) ) { wxLogWarning(wxT("User value for immutable key '%s' ignored."), path.Name().c_str()); } @@ -441,7 +646,7 @@ bool wxRegConfig::Read(const wxString& key, long *plResult) const } // first try local key - if ( TryGetValue(m_keyLocal, path.Name(), plResult) || + if ( (m_keyLocal.Exists() && TryGetValue(LocalKey(), path.Name(), plResult)) || (bQueryGlobal && TryGetValue(m_keyGlobal, path.Name(), plResult)) ) { return TRUE; } @@ -457,7 +662,7 @@ bool wxRegConfig::Write(const wxString& key, const wxString& szValue) return FALSE; } - return m_keyLocal.SetValue(path.Name(), szValue); + return LocalKey().SetValue(path.Name(), szValue); } bool wxRegConfig::Write(const wxString& key, long lValue) @@ -469,7 +674,7 @@ bool wxRegConfig::Write(const wxString& key, long lValue) return FALSE; } - return m_keyLocal.SetValue(path.Name(), lValue); + return LocalKey().SetValue(path.Name(), lValue); } // ---------------------------------------------------------------------------- @@ -540,13 +745,15 @@ bool wxRegConfig::DeleteEntry(const wxString& value, bool bGroupIfEmptyAlso) { wxConfigPathChanger path(this, value); - if ( !m_keyLocal.DeleteValue(path.Name()) ) - return FALSE; + if ( m_keyLocal.Exists() ) { + if ( !m_keyLocal.DeleteValue(path.Name()) ) + return FALSE; - if ( m_keyLocal.IsEmpty() ) { - wxString strKey = GetPath().AfterLast(wxCONFIG_PATH_SEPARATOR); - SetPath(".."); // changes m_keyLocal - return m_keyLocal.DeleteKey(strKey); + if ( m_keyLocal.IsEmpty() ) { + wxString strKey = GetPath().AfterLast(wxCONFIG_PATH_SEPARATOR); + SetPath(".."); // changes m_keyLocal + return LocalKey().DeleteKey(strKey); + } } return TRUE; @@ -556,7 +763,7 @@ bool wxRegConfig::DeleteGroup(const wxString& key) { wxConfigPathChanger path(this, key); - return m_keyLocal.DeleteKey(path.Name()); + return m_keyLocal.Exists() ? LocalKey().DeleteKey(path.Name()) : TRUE; } bool wxRegConfig::DeleteAll() @@ -577,3 +784,5 @@ bool wxRegConfig::DeleteAll() #endif // __WIN16__ +#endif + // wxUSE_CONFIG