X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/50e42404fb498c5973f8ce500bc97e2906b97d64..68df211faedeabdf4259858109d1bd7385fdccf5:/src/msw/registry.cpp diff --git a/src/msw/registry.cpp b/src/msw/registry.cpp index ca0f62ace8..010ff1d301 100644 --- a/src/msw/registry.cpp +++ b/src/msw/registry.cpp @@ -6,16 +6,12 @@ // Created: 03.04.98 // RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin -// Licence: wxWindows license +// Licence: wxWindows licence // TODO: - parsing of registry key names // - support of other (than REG_SZ/REG_DWORD) registry types // - add high level functions (RegisterOleServer, ...) /////////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "registry.h" -#endif - // for compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -23,20 +19,21 @@ #pragma hdrstop #endif -// other wxWindows headers +// other wxWidgets headers #include "wx/string.h" #include "wx/intl.h" #include "wx/log.h" - -#ifndef __WIN16__ +#include "wx/file.h" +#include "wx/wfstream.h" // Windows headers -/* -#define STRICT -#define WIN32_LEAN_AND_MEAN -*/ +#include "wx/msw/wrapwin.h" -#include +#ifdef __WXWINCE__ +#include "wx/msw/private.h" +#include +#include +#endif // other std headers #include // for _MAX_PATH @@ -51,6 +48,7 @@ // some registry functions don't like signed chars typedef unsigned char *RegString; +typedef BYTE* RegBinary; // ---------------------------------------------------------------------------- // constants @@ -67,18 +65,18 @@ static struct aStdKeys[] = { { HKEY_CLASSES_ROOT, wxT("HKEY_CLASSES_ROOT"), wxT("HKCR") }, -#ifdef __WIN32__ { HKEY_CURRENT_USER, wxT("HKEY_CURRENT_USER"), wxT("HKCU") }, { HKEY_LOCAL_MACHINE, wxT("HKEY_LOCAL_MACHINE"), wxT("HKLM") }, { HKEY_USERS, wxT("HKEY_USERS"), wxT("HKU") }, // short name? +#ifndef __WXWINCE__ { HKEY_PERFORMANCE_DATA, wxT("HKEY_PERFORMANCE_DATA"), wxT("HKPD") }, -#if WINVER >= 0x0400 +#endif +#ifdef HKEY_CURRENT_CONFIG { HKEY_CURRENT_CONFIG, wxT("HKEY_CURRENT_CONFIG"), wxT("HKCC") }, -#ifndef __GNUWIN32__ +#endif +#ifdef HKEY_DYN_DATA { HKEY_DYN_DATA, wxT("HKEY_DYN_DATA"), wxT("HKDD") }, // short name? -#endif //GNUWIN32 -#endif //WINVER >= 4.0 -#endif //WIN32 +#endif }; // the registry name separator (perhaps one day MS will change it to '/' ;-) @@ -86,7 +84,7 @@ aStdKeys[] = // useful for Windows programmers: makes somewhat more clear all these zeroes // being passed to Windows APIs -#define RESERVED (NULL) +#define RESERVED (0) // ---------------------------------------------------------------------------- // macros @@ -105,7 +103,7 @@ aStdKeys[] = // removes the trailing backslash from the string if it has one static inline void RemoveTrailingSeparator(wxString& str); -// returns TRUE if given registry key exists +// returns true if given registry key exists static bool KeyExists(WXHKEY hRootKey, const wxChar *szKey); // combines value and key name (uses static buffer!) @@ -127,7 +125,7 @@ const size_t wxRegKey::nStdKeys = WXSIZEOF(aStdKeys); const wxChar *wxRegKey::GetStdKeyName(size_t key) { // return empty string if key is invalid - wxCHECK_MSG( key < nStdKeys, wxT(""), wxT("invalid key in wxRegKey::GetStdKeyName") ); + wxCHECK_MSG( key < nStdKeys, wxEmptyString, wxT("invalid key in wxRegKey::GetStdKeyName") ); return aStdKeys[key].szName; } @@ -135,7 +133,7 @@ const wxChar *wxRegKey::GetStdKeyName(size_t key) const wxChar *wxRegKey::GetStdKeyShortName(size_t key) { // return empty string if key is invalid - wxCHECK( key < nStdKeys, wxT("") ); + wxCHECK( key < nStdKeys, wxEmptyString ); return aStdKeys[key].szShortName; } @@ -161,7 +159,7 @@ wxRegKey::StdKey wxRegKey::ExtractKeyName(wxString& strKey) } else { strKey = strKey.After(REG_SEPARATOR); - if ( !strKey.IsEmpty() && strKey.Last() == REG_SEPARATOR ) + if ( !strKey.empty() && strKey.Last() == REG_SEPARATOR ) strKey.Truncate(strKey.Len() - 1); } @@ -212,8 +210,8 @@ wxRegKey::wxRegKey(const wxRegKey& keyParent, const wxString& strKey) : m_strKey(keyParent.m_strKey) { // combine our name with parent's to get the full name - if ( !m_strKey.IsEmpty() && - (strKey.IsEmpty() || strKey[0] != REG_SEPARATOR) ) { + if ( !m_strKey.empty() && + (strKey.empty() || strKey[0] != REG_SEPARATOR) ) { m_strKey += REG_SEPARATOR; } @@ -268,7 +266,7 @@ void wxRegKey::SetName(const wxRegKey& keyParent, const wxString& strKey) // next line! m_strKey.clear(); m_strKey += keyParent.m_strKey; - if ( !strKey.IsEmpty() && strKey[0] != REG_SEPARATOR ) + if ( !strKey.empty() && strKey[0] != REG_SEPARATOR ) m_strKey += REG_SEPARATOR; m_strKey += strKey; @@ -289,21 +287,21 @@ void wxRegKey::SetHkey(WXHKEY hKey) // info about the key // ---------------------------------------------------------------------------- -// returns TRUE if the key exists +// returns true if the key exists bool wxRegKey::Exists() const { // opened key has to exist, try to open it if not done yet - return IsOpened() ? TRUE : KeyExists(m_hRootKey, m_strKey); + return IsOpened() ? true : KeyExists(m_hRootKey, m_strKey); } // returns the full name of the key (prefix is abbreviated if bShortPrefix) wxString wxRegKey::GetName(bool bShortPrefix) const { - StdKey key = GetStdKeyFromHkey((StdKey) m_hRootKey); + StdKey key = GetStdKeyFromHkey((WXHKEY) m_hRootKey); wxString str = bShortPrefix ? aStdKeys[key].szShortName : aStdKeys[key].szName; - if ( !m_strKey.IsEmpty() ) - str << "\\" << m_strKey; + if ( !m_strKey.empty() ) + str << _T("\\") << m_strKey; return str; } @@ -313,8 +311,6 @@ bool wxRegKey::GetKeyInfo(size_t *pnSubKeys, size_t *pnValues, size_t *pnMaxValueLen) const { -#if defined(__WIN32__) && !defined(__TWIN32__) - // old gcc headers incorrectly prototype RegQueryInfoKey() #if defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__) #define REG_PARAM (size_t *) @@ -350,15 +346,10 @@ bool wxRegKey::GetKeyInfo(size_t *pnSubKeys, if ( m_dwLastError != ERROR_SUCCESS ) { wxLogSysError(m_dwLastError, _("Can't get info about registry key '%s'"), GetName().c_str()); - return FALSE; + return false; } - return TRUE; -#else // Win16 - wxFAIL_MSG("GetKeyInfo() not implemented"); - - return FALSE; -#endif + return true; } // ---------------------------------------------------------------------------- @@ -366,47 +357,73 @@ bool wxRegKey::GetKeyInfo(size_t *pnSubKeys, // ---------------------------------------------------------------------------- // opens key (it's not an error to call Open() on an already opened key) -bool wxRegKey::Open() +bool wxRegKey::Open(AccessMode mode) { - if ( IsOpened() ) - return TRUE; + if ( IsOpened() ) + { + if ( mode <= m_mode ) + return true; + + // we had been opened in read mode but now must be reopened in write + Close(); + } + + HKEY tmpKey; + m_dwLastError = ::RegOpenKeyEx + ( + (HKEY) m_hRootKey, + m_strKey, + RESERVED, + mode == Read ? KEY_READ : KEY_ALL_ACCESS, + &tmpKey + ); + + if ( m_dwLastError != ERROR_SUCCESS ) + { + wxLogSysError(m_dwLastError, _("Can't open registry key '%s'"), + GetName().c_str()); + return false; + } - HKEY tmpKey; - m_dwLastError = RegOpenKey((HKEY) m_hRootKey, m_strKey, &tmpKey); - if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, _("Can't open registry key '%s'"), - GetName().c_str()); - return FALSE; - } - else - { m_hKey = (WXHKEY) tmpKey; - return TRUE; - } + m_mode = mode; + + return true; } // creates key, failing if it exists and !bOkIfExists bool wxRegKey::Create(bool bOkIfExists) { // check for existence only if asked (i.e. order is important!) - if ( !bOkIfExists && Exists() ) { - return FALSE; - } + if ( !bOkIfExists && Exists() ) + return false; if ( IsOpened() ) - return TRUE; + return true; HKEY tmpKey; +#ifdef __WXWINCE__ + DWORD disposition; + m_dwLastError = RegCreateKeyEx((HKEY) m_hRootKey, m_strKey, + NULL, // reserved + NULL, // class string + 0, + 0, + NULL, + &tmpKey, + &disposition); +#else m_dwLastError = RegCreateKey((HKEY) m_hRootKey, m_strKey, &tmpKey); +#endif if ( m_dwLastError != ERROR_SUCCESS ) { wxLogSysError(m_dwLastError, _("Can't create registry key '%s'"), GetName().c_str()); - return FALSE; + return false; } else { m_hKey = (WXHKEY) tmpKey; - return TRUE; + return true; } } @@ -421,20 +438,20 @@ bool wxRegKey::Close() wxLogSysError(m_dwLastError, _("Can't close registry key '%s'"), GetName().c_str()); - return FALSE; + return false; } } - return TRUE; + return true; } bool wxRegKey::RenameValue(const wxChar *szValueOld, const wxChar *szValueNew) { - bool ok = TRUE; + bool ok = true; if ( HasValue(szValueNew) ) { wxLogError(_("Registry value '%s' already exists."), szValueNew); - ok = FALSE; + ok = false; } if ( !ok || @@ -443,10 +460,10 @@ bool wxRegKey::RenameValue(const wxChar *szValueOld, const wxChar *szValueNew) wxLogError(_("Failed to rename registry value '%s' to '%s'."), szValueOld, szValueNew); - return FALSE; + return false; } - return TRUE; + return true; } bool wxRegKey::CopyValue(const wxChar *szValue, @@ -474,37 +491,41 @@ bool wxRegKey::CopyValue(const wxChar *szValue, keyDst.SetValue(szValueNew, dwVal); } + case Type_Binary: + { + wxMemoryBuffer buf; + return QueryValue(szValue,buf) && + keyDst.SetValue(szValueNew,buf); + } + // these types are unsupported because I am not sure about how // exactly they should be copied and because they shouldn't // occur among the application keys (supposedly created with // this class) -#ifdef __WIN32__ case Type_None: case Type_Expand_String: - case Type_Binary: case Type_Dword_big_endian: case Type_Link: case Type_Multi_String: case Type_Resource_list: case Type_Full_resource_descriptor: case Type_Resource_requirements_list: -#endif // Win32 default: wxLogError(_("Can't copy values of unsupported type %d."), GetValueType(szValue)); - return FALSE; + return false; } } bool wxRegKey::Rename(const wxChar *szNewName) { - wxCHECK_MSG( !!m_strKey, FALSE, _T("registry hives can't be renamed") ); + wxCHECK_MSG( !m_strKey.empty(), false, _T("registry hives can't be renamed") ); if ( !Exists() ) { wxLogError(_("Registry key '%s' does not exist, cannot rename it."), GetFullName(this)); - return FALSE; + return false; } // do we stay in the same hive? @@ -516,7 +537,7 @@ bool wxRegKey::Rename(const wxChar *szNewName) if ( inSameHive ) { // rename the key to the new name under the same parent wxString strKey = m_strKey.BeforeLast(REG_SEPARATOR); - if ( !!strKey ) { + if ( !strKey.empty() ) { // don't add '\\' in the start if strFullNewName is empty strKey += REG_SEPARATOR; } @@ -530,7 +551,7 @@ bool wxRegKey::Rename(const wxChar *szNewName) keyDst.SetName(szNewName); } - bool ok = keyDst.Create(FALSE /* fail if alredy exists */); + bool ok = keyDst.Create(false /* fail if alredy exists */); if ( !ok ) { wxLogError(_("Registry key '%s' already exists."), GetFullName(&keyDst)); @@ -555,7 +576,7 @@ bool wxRegKey::Copy(const wxChar *szNewName) { // create the new key first wxRegKey keyDst(szNewName); - bool ok = keyDst.Create(FALSE /* fail if alredy exists */); + bool ok = keyDst.Create(false /* fail if alredy exists */); if ( ok ) { ok = Copy(keyDst); @@ -570,7 +591,7 @@ bool wxRegKey::Copy(const wxChar *szNewName) bool wxRegKey::Copy(wxRegKey& keyDst) { - bool ok = TRUE; + bool ok = true; // copy all sub keys to the new location wxString strKey; @@ -584,6 +605,10 @@ bool wxRegKey::Copy(wxRegKey& keyDst) if ( ok ) bCont = GetNextKey(strKey, lIndex); + else + wxLogError(_("Failed to copy the registry subkey '%s' to '%s'."), + GetFullName(&key), keyName.c_str()); + } // copy all values @@ -603,7 +628,8 @@ bool wxRegKey::Copy(wxRegKey& keyDst) } if ( !ok ) { - wxLogError(_("Failed to copy the contents of registry key '%s' to '%s'."), GetFullName(this), GetFullName(&keyDst)); + wxLogError(_("Failed to copy the contents of registry key '%s' to '%s'."), + GetFullName(this), GetFullName(&keyDst)); } return ok; @@ -618,19 +644,20 @@ bool wxRegKey::DeleteSelf() wxLogNull nolog; if ( !Open() ) { // it already doesn't exist - ok! - return TRUE; + return true; } } // prevent a buggy program from erasing one of the root registry keys or an // immediate subkey (i.e. one which doesn't have '\\' inside) of any other // key except HKCR (HKCR has some "deleteable" subkeys) - if ( m_strKey.IsEmpty() || + if ( m_strKey.empty() || ((m_hRootKey != (WXHKEY) aStdKeys[HKCR].hkey) && (m_strKey.Find(REG_SEPARATOR) == wxNOT_FOUND)) ) { - wxLogError(_("Registry key '%s' is needed for normal system operation,\ndeleting it will leave your system in unusable state:\noperation aborted."), GetFullName(this)); + wxLogError(_("Registry key '%s' is needed for normal system operation,\ndeleting it will leave your system in unusable state:\noperation aborted."), + GetFullName(this)); - return FALSE; + return false; } // we can't delete keys while enumerating because it confuses GetNextKey, so @@ -650,26 +677,28 @@ bool wxRegKey::DeleteSelf() for ( size_t nKey = 0; nKey < nKeyCount; nKey++ ) { wxRegKey key(*this, astrSubkeys[nKey]); if ( !key.DeleteSelf() ) - return FALSE; + return false; } // now delete this key itself Close(); m_dwLastError = RegDeleteKey((HKEY) m_hRootKey, m_strKey); - if ( m_dwLastError != ERROR_SUCCESS ) { + // deleting a key which doesn't exist is not considered an error + if ( m_dwLastError != ERROR_SUCCESS && + m_dwLastError != ERROR_FILE_NOT_FOUND ) { wxLogSysError(m_dwLastError, _("Can't delete key '%s'"), GetName().c_str()); - return FALSE; + return false; } - return TRUE; + return true; } bool wxRegKey::DeleteKey(const wxChar *szKey) { if ( !Open() ) - return FALSE; + return false; wxRegKey key(*this, szKey); return key.DeleteSelf(); @@ -677,58 +706,44 @@ bool wxRegKey::DeleteKey(const wxChar *szKey) bool wxRegKey::DeleteValue(const wxChar *szValue) { - if ( !Open() ) - return FALSE; + if ( !Open() ) + return false; -#if defined(__WIN32__) && !defined(__TWIN32__) m_dwLastError = RegDeleteValue((HKEY) m_hKey, WXSTRINGCAST szValue); - if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, _("Can't delete value '%s' from key '%s'"), - szValue, GetName().c_str()); - return FALSE; - } - #else //WIN16 - // named registry values don't exist in Win16 world - wxASSERT( IsEmpty(szValue) ); - // just set the (default and unique) value of the key to "" - m_dwLastError = RegSetValue((HKEY) m_hKey, NULL, REG_SZ, "", RESERVED); - if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, _("Can't delete value of key '%s'"), - GetName().c_str()); - return FALSE; + // deleting a value which doesn't exist is not considered an error + if ( (m_dwLastError != ERROR_SUCCESS) && + (m_dwLastError != ERROR_FILE_NOT_FOUND) ) + { + wxLogSysError(m_dwLastError, _("Can't delete value '%s' from key '%s'"), + szValue, GetName().c_str()); + return false; } - #endif //WIN16/32 - return TRUE; + return true; } // ---------------------------------------------------------------------------- // access to values and subkeys // ---------------------------------------------------------------------------- -// return TRUE if value exists +// return true if value exists bool wxRegKey::HasValue(const wxChar *szValue) const { - // this function should be silent, so suppress possible messages from Open() - wxLogNull nolog; + // this function should be silent, so suppress possible messages from Open() + wxLogNull nolog; - #ifdef __WIN32__ - if ( !CONST_CAST Open() ) - return FALSE; + if ( !CONST_CAST Open(Read) ) + return false; LONG dwRet = ::RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED, NULL, NULL, NULL); return dwRet == ERROR_SUCCESS; - #else // WIN16 - // only unnamed value exists - return IsEmpty(szValue); - #endif // WIN16/32 } -// returns TRUE if this key has any values +// returns true if this key has any values bool wxRegKey::HasValues() const { // suppress possible messages from GetFirstValue() @@ -740,7 +755,7 @@ bool wxRegKey::HasValues() const return CONST_CAST GetFirstValue(str, l); } -// returns TRUE if this key has any subkeys +// returns true if this key has any subkeys bool wxRegKey::HasSubkeys() const { // suppress possible messages from GetFirstKey() @@ -752,22 +767,21 @@ bool wxRegKey::HasSubkeys() const return CONST_CAST GetFirstKey(str, l); } -// returns TRUE if given subkey exists +// returns true if given subkey exists bool wxRegKey::HasSubKey(const wxChar *szKey) const { // this function should be silent, so suppress possible messages from Open() wxLogNull nolog; - if ( !CONST_CAST Open() ) - return FALSE; + if ( !CONST_CAST Open(Read) ) + return false; return KeyExists(m_hKey, szKey); } wxRegKey::ValueType wxRegKey::GetValueType(const wxChar *szValue) const { - #ifdef __WIN32__ - if ( ! CONST_CAST Open() ) + if ( ! CONST_CAST Open(Read) ) return Type_None; DWORD dwType; @@ -780,34 +794,25 @@ wxRegKey::ValueType wxRegKey::GetValueType(const wxChar *szValue) const } return (ValueType)dwType; - #else //WIN16 - return IsEmpty(szValue) ? Type_String : Type_None; - #endif //WIN16/32 } -#ifdef __WIN32__ bool wxRegKey::SetValue(const wxChar *szValue, long lValue) { -#ifdef __TWIN32__ - wxFAIL_MSG("RegSetValueEx not implemented by TWIN32"); - return FALSE; -#else if ( CONST_CAST Open() ) { m_dwLastError = RegSetValueEx((HKEY) m_hKey, szValue, (DWORD) RESERVED, REG_DWORD, (RegString)&lValue, sizeof(lValue)); if ( m_dwLastError == ERROR_SUCCESS ) - return TRUE; + return true; } wxLogSysError(m_dwLastError, _("Can't set value of '%s'"), GetFullName(this, szValue)); - return FALSE; -#endif + return false; } bool wxRegKey::QueryValue(const wxChar *szValue, long *plValue) const { - if ( CONST_CAST Open() ) { + if ( CONST_CAST Open(Read) ) { DWORD dwType, dwSize = sizeof(DWORD); RegString pBuf = (RegString)plValue; m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED, @@ -815,119 +820,157 @@ bool wxRegKey::QueryValue(const wxChar *szValue, long *plValue) const if ( m_dwLastError != ERROR_SUCCESS ) { wxLogSysError(m_dwLastError, _("Can't read value of key '%s'"), GetName().c_str()); - return FALSE; + return false; } else { // check that we read the value of right type wxASSERT_MSG( IsNumericValue(szValue), wxT("Type mismatch in wxRegKey::QueryValue().") ); - return TRUE; + return true; } } else - return FALSE; + return false; } -#endif //Win32 - -bool wxRegKey::QueryValue(const wxChar *szValue, - wxString& strValue, - bool raw) const +bool wxRegKey::SetValue(const wxChar *szValue,const wxMemoryBuffer& buffer) { +#ifdef __TWIN32__ + wxFAIL_MSG("RegSetValueEx not implemented by TWIN32"); + return false; +#else if ( CONST_CAST Open() ) { - #ifdef __WIN32__ - // first get the type and size of the data - DWORD dwType, dwSize; - m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED, + m_dwLastError = RegSetValueEx((HKEY) m_hKey, szValue, (DWORD) RESERVED, REG_BINARY, + (RegBinary)buffer.GetData(),buffer.GetDataLen()); + if ( m_dwLastError == ERROR_SUCCESS ) + return true; + } + + wxLogSysError(m_dwLastError, _("Can't set value of '%s'"), + GetFullName(this, szValue)); + return false; +#endif +} + +bool wxRegKey::QueryValue(const wxChar *szValue, wxMemoryBuffer& buffer) const +{ + if ( CONST_CAST Open(Read) ) { + // first get the type and size of the data + DWORD dwType, dwSize; + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED, &dwType, NULL, &dwSize); - if ( m_dwLastError == ERROR_SUCCESS ) { - if ( !dwSize ) { - // must treat this case specially as GetWriteBuf() doesn't like - // being called with 0 size - strValue.Empty(); - } - else { - RegString pBuf = (RegString)strValue.GetWriteBuf(dwSize); + + if ( m_dwLastError == ERROR_SUCCESS ) { + if ( dwSize ) { + const RegBinary pBuf = (RegBinary)buffer.GetWriteBuf(dwSize); m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED, &dwType, pBuf, &dwSize); - strValue.UngetWriteBuf(); + buffer.UngetWriteBuf(dwSize); + } else { + buffer.SetDataLen(0); + } + } - // expand the var expansions in the string unless disabled - if ( (dwType == REG_EXPAND_SZ) && !raw ) - { - DWORD dwExpSize = ::ExpandEnvironmentStrings(strValue, NULL, 0); - bool ok = dwExpSize != 0; - if ( ok ) - { - wxString strExpValue; - ok = ::ExpandEnvironmentStrings - ( - strValue, - strExpValue.GetWriteBuf(dwExpSize), - dwExpSize - ) != 0; - strExpValue.UngetWriteBuf(); - strValue = strExpValue; - } - if ( !ok ) + if ( m_dwLastError != ERROR_SUCCESS ) { + wxLogSysError(m_dwLastError, _("Can't read value of key '%s'"), + GetName().c_str()); + return false; + } + return true; + } + return false; +} + + + +bool wxRegKey::QueryValue(const wxChar *szValue, + wxString& strValue, + bool WXUNUSED_IN_WINCE(raw)) const +{ + if ( CONST_CAST Open(Read) ) + { + + // first get the type and size of the data + DWORD dwType=REG_NONE, dwSize=0; + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED, + &dwType, NULL, &dwSize); + if ( m_dwLastError == ERROR_SUCCESS ) + { + if ( !dwSize ) + { + // must treat this case specially as GetWriteBuf() doesn't like + // being called with 0 size + strValue.Empty(); + } + else + { + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, + WXSTRINGCAST szValue, + RESERVED, + &dwType, + (RegString)(wxChar*)wxStringBuffer(strValue, dwSize), + &dwSize); + + // expand the var expansions in the string unless disabled +#ifndef __WXWINCE__ + if ( (dwType == REG_EXPAND_SZ) && !raw ) { - wxLogLastError(_T("ExpandEnvironmentStrings")); + DWORD dwExpSize = ::ExpandEnvironmentStrings(strValue, NULL, 0); + bool ok = dwExpSize != 0; + if ( ok ) + { + wxString strExpValue; + ok = ::ExpandEnvironmentStrings(strValue, + wxStringBuffer(strExpValue, dwExpSize), + dwExpSize + ) != 0; + strValue = strExpValue; + } + + if ( !ok ) + { + wxLogLastError(_T("ExpandEnvironmentStrings")); + } } +#endif + // __WXWINCE__ } - } - if ( m_dwLastError == ERROR_SUCCESS ) { - // check that it was the right type - wxASSERT_MSG( !IsNumericValue(szValue), - wxT("Type mismatch in wxRegKey::QueryValue().") ); + if ( m_dwLastError == ERROR_SUCCESS ) + { + // check that it was the right type + wxASSERT_MSG( !IsNumericValue(szValue), + wxT("Type mismatch in wxRegKey::QueryValue().") ); - return TRUE; + return true; + } } - } - #else //WIN16 - // named registry values don't exist in Win16 - wxASSERT( IsEmpty(szValue) ); - - m_dwLastError = RegQueryValue((HKEY) m_hKey, 0, strValue.GetWriteBuf(256), &l); - strValue.UngetWriteBuf(); - if ( m_dwLastError == ERROR_SUCCESS ) - return TRUE; - #endif //WIN16/32 - } + } - wxLogSysError(m_dwLastError, _("Can't read value of '%s'"), - GetFullName(this, szValue)); - return FALSE; + wxLogSysError(m_dwLastError, _("Can't read value of '%s'"), + GetFullName(this, szValue)); + return false; } bool wxRegKey::SetValue(const wxChar *szValue, const wxString& strValue) { if ( CONST_CAST Open() ) { -#if defined( __WIN32__) && !defined(__TWIN32__) m_dwLastError = RegSetValueEx((HKEY) m_hKey, szValue, (DWORD) RESERVED, REG_SZ, (RegString)strValue.c_str(), (strValue.Len() + 1)*sizeof(wxChar)); if ( m_dwLastError == ERROR_SUCCESS ) - return TRUE; - #else //WIN16 - // named registry values don't exist in Win16 - wxASSERT( IsEmpty(szValue) ); - - m_dwLastError = RegSetValue((HKEY) m_hKey, NULL, REG_SZ, strValue, NULL); - if ( m_dwLastError == ERROR_SUCCESS ) - return TRUE; - #endif //WIN16/32 + return true; } wxLogSysError(m_dwLastError, _("Can't set value of '%s'"), GetFullName(this, szValue)); - return FALSE; + return false; } wxString wxRegKey::QueryDefaultValue() const @@ -945,8 +988,8 @@ wxString wxRegKey::QueryDefaultValue() const bool wxRegKey::GetFirstValue(wxString& strValueName, long& lIndex) { - if ( !Open() ) - return FALSE; + if ( !Open(Read) ) + return false; lIndex = 0; return GetNextValue(strValueName, lIndex); @@ -958,9 +1001,8 @@ bool wxRegKey::GetNextValue(wxString& strValueName, long& lIndex) const // are we already at the end of enumeration? if ( lIndex == -1 ) - return FALSE; + return false; -#if defined( __WIN32__) && !defined(__TWIN32__) wxChar szValueName[1024]; // @@ use RegQueryInfoKey... DWORD dwValueLen = WXSIZEOF(szValueName); @@ -981,25 +1023,18 @@ bool wxRegKey::GetNextValue(wxString& strValueName, long& lIndex) const GetName().c_str()); } - return FALSE; + return false; } strValueName = szValueName; - #else //WIN16 - // only one unnamed value - wxASSERT( lIndex == 0 ); - - lIndex = -1; - strValueName.Empty(); - #endif - return TRUE; + return true; } bool wxRegKey::GetFirstKey(wxString& strKeyName, long& lIndex) { - if ( !Open() ) - return FALSE; + if ( !Open(Read) ) + return false; lIndex = 0; return GetNextKey(strKeyName, lIndex); @@ -1011,10 +1046,17 @@ bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const // are we already at the end of enumeration? if ( lIndex == -1 ) - return FALSE; + return false; wxChar szKeyName[_MAX_PATH + 1]; + +#ifdef __WXWINCE__ + DWORD sizeName = WXSIZEOF(szKeyName); + m_dwLastError = RegEnumKeyEx((HKEY) m_hKey, lIndex++, szKeyName, & sizeName, + 0, NULL, NULL, NULL); +#else m_dwLastError = RegEnumKey((HKEY) m_hKey, lIndex++, szKeyName, WXSIZEOF(szKeyName)); +#endif if ( m_dwLastError != ERROR_SUCCESS ) { if ( m_dwLastError == ERROR_NO_MORE_ITEMS ) { @@ -1026,27 +1068,307 @@ bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const GetName().c_str()); } - return FALSE; + return false; } strKeyName = szKeyName; - return TRUE; + return true; } -// returns TRUE if the value contains a number (else it's some string) +// returns true if the value contains a number (else it's some string) bool wxRegKey::IsNumericValue(const wxChar *szValue) const - { - ValueType type = GetValueType(szValue); - switch ( type ) { +{ + ValueType type = GetValueType(szValue); + switch ( type ) { case Type_Dword: /* case Type_Dword_little_endian: == Type_Dword */ case Type_Dword_big_endian: - return TRUE; + return true; default: - return FALSE; - } - } + return false; + } +} + +// ---------------------------------------------------------------------------- +// exporting registry keys to file +// ---------------------------------------------------------------------------- + +#if wxUSE_STREAMS + +// helper functions for writing ASCII strings (even in Unicode build) +static inline bool WriteAsciiChar(wxOutputStream& ostr, char ch) +{ + ostr.PutC(ch); + return ostr.IsOk(); +} + +static inline bool WriteAsciiEOL(wxOutputStream& ostr) +{ + // as we open the file in text mode, it is enough to write LF without CR + return WriteAsciiChar(ostr, '\n'); +} + +static inline bool WriteAsciiString(wxOutputStream& ostr, const char *p) +{ + return ostr.Write(p, strlen(p)).IsOk(); +} + +static inline bool WriteAsciiString(wxOutputStream& ostr, const wxString& s) +{ +#if wxUSE_UNICODE + wxCharBuffer name(s.mb_str()); + ostr.Write(name, strlen(name)); +#else + ostr.Write(s, s.length()); +#endif + + return ostr.IsOk(); +} + +#endif // wxUSE_STREAMS + +bool wxRegKey::Export(const wxString& filename) const +{ +#if wxUSE_FFILE && wxUSE_STREAMS + if ( wxFile::Exists(filename) ) + { + wxLogError(_("Exporting registry key: file \"%s\" already exists and won't be overwritten."), + filename.c_str()); + return false; + } + + wxFFileOutputStream ostr(filename, _T("w")); + + return ostr.Ok() && Export(ostr); +#else + wxUnusedVar(filename); + return false; +#endif +} + +#if wxUSE_STREAMS +bool wxRegKey::Export(wxOutputStream& ostr) const +{ + // write out the header + if ( !WriteAsciiString(ostr, "REGEDIT4\n\n") ) + return false; + + return DoExport(ostr); +} +#endif // wxUSE_STREAMS + +static +wxString +FormatAsHex(const void *data, + size_t size, + wxRegKey::ValueType type = wxRegKey::Type_Binary) +{ + wxString value(_T("hex")); + + // binary values use just "hex:" prefix while the other ones must indicate + // the real type + if ( type != wxRegKey::Type_Binary ) + value << _T('(') << type << _T(')'); + value << _T(':'); + + // write all the rest as comma-separated bytes + value.reserve(3*size + 10); + const char * const p = wx_static_cast(const char *, data); + for ( size_t n = 0; n < size; n++ ) + { + // TODO: line wrapping: although not required by regedit, this makes + // the generated files easier to read and compare with the files + // produced by regedit + if ( n ) + value << _T(','); + + value << wxString::Format(_T("%02x"), (unsigned char)p[n]); + } + + return value; +} + +static inline +wxString FormatAsHex(const wxString& value, wxRegKey::ValueType type) +{ + return FormatAsHex(value.c_str(), value.length() + 1, type); +} + +wxString wxRegKey::FormatValue(const wxString& name) const +{ + wxString rhs; + const ValueType type = GetValueType(name); + switch ( type ) + { + case Type_String: + { + wxString value; + if ( !QueryValue(name, value) ) + break; + + // quotes and backslashes must be quoted, linefeeds are not + // allowed in string values + rhs.reserve(value.length() + 2); + rhs = _T('"'); + + // there can be no NULs here + bool useHex = false; + for ( const wxChar *p = value.c_str(); *p && !useHex; p++ ) + { + switch ( *p ) + { + case _T('\n'): + // we can only represent this string in hex + useHex = true; + break; + + case _T('"'): + case _T('\\'): + // escape special symbol + rhs += _T('\\'); + // fall through + + default: + rhs += *p; + } + } + + if ( useHex ) + rhs = FormatAsHex(value, Type_String); + else + rhs += _T('"'); + } + break; + + case Type_Dword: + /* case Type_Dword_little_endian: == Type_Dword */ + { + long value; + if ( !QueryValue(name, &value) ) + break; + + rhs.Printf(_T("dword:%08x"), (unsigned int)value); + } + break; + + case Type_Expand_String: + case Type_Multi_String: + { + wxString value; + if ( !QueryRawValue(name, value) ) + break; + + rhs = FormatAsHex(value, type); + } + break; + + case Type_Binary: + { + wxMemoryBuffer buf; + if ( !QueryValue(name, buf) ) + break; + + rhs = FormatAsHex(buf.GetData(), buf.GetDataLen()); + } + break; + + // no idea how those appear in REGEDIT4 files + case Type_None: + case Type_Dword_big_endian: + case Type_Link: + case Type_Resource_list: + case Type_Full_resource_descriptor: + case Type_Resource_requirements_list: + default: + wxLogWarning(_("Can't export value of unsupported type %d."), type); + } + + return rhs; +} + +#if wxUSE_STREAMS + +bool wxRegKey::DoExportValue(wxOutputStream& ostr, const wxString& name) const +{ + // first examine the value type: if it's unsupported, simply skip it + // instead of aborting the entire export process because we failed to + // export a single value + wxString value = FormatValue(name); + if ( value.empty() ) + { + wxLogWarning(_("Ignoring value \"%s\" of the key \"%s\"."), + name.c_str(), GetName().c_str()); + return true; + } + + // we do have the text representation of the value, now write everything + // out + + // special case: unnamed/default value is represented as just "@" + if ( name.empty() ) + { + if ( !WriteAsciiChar(ostr, '@') ) + return false; + } + else // normal, named, value + { + if ( !WriteAsciiChar(ostr, '"') || + !WriteAsciiString(ostr, name) || + !WriteAsciiChar(ostr, '"') ) + return false; + } + + if ( !WriteAsciiChar(ostr, '=') ) + return false; + + return WriteAsciiString(ostr, value) && WriteAsciiEOL(ostr); +} + +bool wxRegKey::DoExport(wxOutputStream& ostr) const +{ + // write out this key name + if ( !WriteAsciiChar(ostr, '[') ) + return false; + + if ( !WriteAsciiString(ostr, GetName(false /* no short prefix */)) ) + return false; + + if ( !WriteAsciiChar(ostr, ']') || !WriteAsciiEOL(ostr) ) + return false; + + // dump all our values + long dummy; + wxString name; + wxRegKey& self = wx_const_cast(wxRegKey&, *this); + bool cont = self.GetFirstValue(name, dummy); + while ( cont ) + { + if ( !DoExportValue(ostr, name) ) + return false; + + cont = GetNextValue(name, dummy); + } + + // always terminate values by blank line, even if there were no values + if ( !WriteAsciiEOL(ostr) ) + return false; + + // recurse to subkeys + cont = self.GetFirstKey(name, dummy); + while ( cont ) + { + wxRegKey subkey(*this, name); + if ( !subkey.DoExport(ostr) ) + return false; + + cont = GetNextKey(name, dummy); + } + + return true; +} + +#endif // wxUSE_STREAMS // ============================================================================ // implementation of global private functions @@ -1054,17 +1376,26 @@ bool wxRegKey::IsNumericValue(const wxChar *szValue) const bool KeyExists(WXHKEY hRootKey, const wxChar *szKey) { - // don't close this key itself for the case of empty szKey! - if ( wxIsEmpty(szKey) ) - return TRUE; - - HKEY hkeyDummy; - if ( RegOpenKey( (HKEY) hRootKey, szKey, &hkeyDummy) == ERROR_SUCCESS ) { - RegCloseKey(hkeyDummy); - return TRUE; - } - else - return FALSE; + // don't close this key itself for the case of empty szKey! + if ( wxIsEmpty(szKey) ) + return true; + + HKEY hkeyDummy; + if ( ::RegOpenKeyEx + ( + (HKEY)hRootKey, + szKey, + RESERVED, + KEY_READ, // we might not have enough rights for rw access + &hkeyDummy + ) == ERROR_SUCCESS ) + { + ::RegCloseKey(hkeyDummy); + + return true; + } + + return false; } const wxChar *GetFullName(const wxRegKey *pKey, const wxChar *szValue) @@ -1079,10 +1410,7 @@ const wxChar *GetFullName(const wxRegKey *pKey, const wxChar *szValue) void RemoveTrailingSeparator(wxString& str) { - if ( !str.IsEmpty() && str.Last() == REG_SEPARATOR ) + if ( !str.empty() && str.Last() == REG_SEPARATOR ) str.Truncate(str.Len() - 1); } -#endif - // __WIN16__ -