// Name: msw/registry.cpp
// Purpose: implementation of registry classes and functions
// Author: Vadim Zeitlin
-// Modified by:
+// Modified by:
// Created: 03.04.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
#include "wx/string.h"
#include "wx/intl.h"
#include "wx/log.h"
-#include "wx/config.h" // for wxExpandEnvVars
#ifndef __WIN16__
#include <stdlib.h> // for _MAX_PATH
#ifndef _MAX_PATH
- #define _MAX_PATH 512
+ #define _MAX_PATH 512
#endif
// our header
const wxChar *szName;
const wxChar *szShortName;
}
-aStdKeys[] =
-{
+aStdKeys[] =
+{
{ HKEY_CLASSES_ROOT, wxT("HKEY_CLASSES_ROOT"), wxT("HKCR") },
#ifdef __WIN32__
{ HKEY_CURRENT_USER, wxT("HKEY_CURRENT_USER"), wxT("HKCU") },
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
-// @ const_cast<> is not yet supported by all compilers
+
+// const_cast<> is not yet supported by all compilers
#define CONST_CAST ((wxRegKey *)this)->
-#if !USE_MUTABLE
- #define m_dwLastError CONST_CAST m_dwLastError
-#endif
+// and neither is mutable which m_dwLastError should be
+#define m_dwLastError CONST_CAST m_dwLastError
// ----------------------------------------------------------------------------
// non member functions
static bool KeyExists(WXHKEY hRootKey, const wxChar *szKey);
// combines value and key name (uses static buffer!)
-static const wxChar *GetFullName(const wxRegKey *pKey,
+static const wxChar *GetFullName(const wxRegKey *pKey,
const wxChar *szValue = NULL);
// ============================================================================
const size_t wxRegKey::nStdKeys = WXSIZEOF(aStdKeys);
// @@ should take a `StdKey key', but as it's often going to be used in loops
-// it would require casts in user code.
+// it would require casts in user code.
const wxChar *wxRegKey::GetStdKeyName(size_t key)
{
// return empty string if key is invalid
wxRegKey::StdKey wxRegKey::ExtractKeyName(wxString& strKey)
{
- wxString strRoot = strKey.Left(REG_SEPARATOR);
+ wxString strRoot = strKey.BeforeFirst(REG_SEPARATOR);
HKEY hRootKey = 0;
size_t ui;
for ( ui = 0; ui < nStdKeys; ui++ ) {
- if ( strRoot.CmpNoCase(aStdKeys[ui].szName) == 0 ||
+ if ( strRoot.CmpNoCase(aStdKeys[ui].szName) == 0 ||
strRoot.CmpNoCase(aStdKeys[ui].szShortName) == 0 ) {
hRootKey = aStdKeys[ui].hkey;
break;
if ( (int) aStdKeys[ui].hkey == (int) hkey )
return (StdKey)ui;
}
-
+
wxFAIL_MSG(wxT("non root hkey passed to wxRegKey::GetStdKeyFromHkey."));
return HKCR;
wxRegKey::wxRegKey()
{
- m_hKey = 0;
m_hRootKey = (WXHKEY) aStdKeys[HKCR].hkey;
- m_dwLastError = 0;
+
+ Init();
}
wxRegKey::wxRegKey(const wxString& strKey) : m_strKey(strKey)
{
m_hRootKey = (WXHKEY) aStdKeys[ExtractKeyName(m_strKey)].hkey;
- m_hKey = (WXHKEY) NULL;
- m_dwLastError = 0;
+
+ Init();
}
// parent is a predefined (and preopened) key
{
RemoveTrailingSeparator(m_strKey);
m_hRootKey = (WXHKEY) aStdKeys[keyParent].hkey;
- m_hKey = (WXHKEY) NULL;
- m_dwLastError = 0;
+
+ Init();
}
// parent is a normal regkey
: m_strKey(keyParent.m_strKey)
{
// combine our name with parent's to get the full name
- if ( !m_strKey.IsEmpty() &&
+ if ( !m_strKey.IsEmpty() &&
(strKey.IsEmpty() || strKey[0] != REG_SEPARATOR) ) {
m_strKey += REG_SEPARATOR;
}
RemoveTrailingSeparator(m_strKey);
m_hRootKey = keyParent.m_hRootKey;
- m_hKey = (WXHKEY) NULL;
- m_dwLastError = 0;
+
+ Init();
}
// dtor closes the key releasing system resource
Close();
// combine our name with parent's to get the full name
- m_strKey = keyParent.m_strKey;
+
+ // NB: this method is called by wxRegConfig::SetPath() which is a performance
+ // critical function and so it preallocates space for our m_strKey to
+ // gain some speed - this is why we only use += here and not = which
+ // would just free the prealloc'd buffer and would have to realloc it the
+ // next line!
+ m_strKey.clear();
+ m_strKey += keyParent.m_strKey;
if ( !strKey.IsEmpty() && strKey[0] != REG_SEPARATOR )
m_strKey += REG_SEPARATOR;
m_strKey += 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);
- wxString str = bShortPrefix ? aStdKeys[key].szShortName
+ StdKey key = GetStdKeyFromHkey((WXHKEY) m_hRootKey);
+ wxString str = bShortPrefix ? aStdKeys[key].szShortName
: aStdKeys[key].szName;
if ( !m_strKey.IsEmpty() )
- str << "\\" << m_strKey;
+ str << _T("\\") << m_strKey;
return str;
}
-#if defined( __GNUWIN32_OLD__ )
-bool wxRegKey::GetKeyInfo(size_t* pnSubKeys,
- size_t* pnMaxKeyLen,
- size_t* pnValues,
- size_t* pnMaxValueLen) const
-#else
-bool wxRegKey::GetKeyInfo(ulong *pnSubKeys,
- ulong *pnMaxKeyLen,
- ulong *pnValues,
- ulong *pnMaxValueLen) const
-#endif
+bool wxRegKey::GetKeyInfo(size_t *pnSubKeys,
+ size_t *pnMaxKeyLen,
+ 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 *)
+#else
+ #define REG_PARAM (LPDWORD)
+#endif
+
+ // it might be unexpected to some that this function doesn't open the key
+ wxASSERT_MSG( IsOpened(), _T("key should be opened in GetKeyInfo") );
+
m_dwLastError = ::RegQueryInfoKey
(
(HKEY) m_hKey,
NULL, // class name
NULL, // (ptr to) size of class name buffer
RESERVED,
+ REG_PARAM
pnSubKeys, // [out] number of subkeys
+ REG_PARAM
pnMaxKeyLen, // [out] max length of a subkey name
NULL, // longest subkey class name
+ REG_PARAM
pnValues, // [out] number of values
+ REG_PARAM
pnMaxValueLen, // [out] max length of a value name
NULL, // longest value data
NULL, // security descriptor
NULL // time of last modification
);
+#undef REG_PARAM
+
if ( m_dwLastError != ERROR_SUCCESS ) {
- wxLogSysError(m_dwLastError, _("can't get info about registry key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't get info about registry key '%s'"),
GetName().c_str());
return FALSE;
}
- else
- return TRUE;
+
+ return TRUE;
#else // Win16
wxFAIL_MSG("GetKeyInfo() not implemented");
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'"),
+ wxLogSysError(m_dwLastError, _("Can't open registry key '%s'"),
GetName().c_str());
return FALSE;
}
HKEY tmpKey;
m_dwLastError = RegCreateKey((HKEY) m_hRootKey, m_strKey, &tmpKey);
if ( m_dwLastError != ERROR_SUCCESS ) {
- wxLogSysError(m_dwLastError, _("can't create registry key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't create registry key '%s'"),
GetName().c_str());
return FALSE;
}
{
if ( IsOpened() ) {
m_dwLastError = RegCloseKey((HKEY) m_hKey);
+ m_hKey = 0;
+
if ( m_dwLastError != ERROR_SUCCESS ) {
- wxLogSysError(m_dwLastError, _("can't close registry key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't close registry key '%s'"),
GetName().c_str());
- m_hKey = 0;
return FALSE;
}
- else {
- m_hKey = 0;
- }
}
return TRUE;
}
+bool wxRegKey::RenameValue(const wxChar *szValueOld, const wxChar *szValueNew)
+{
+ bool ok = TRUE;
+ if ( HasValue(szValueNew) ) {
+ wxLogError(_("Registry value '%s' already exists."), szValueNew);
+
+ ok = FALSE;
+ }
+
+ if ( !ok ||
+ !CopyValue(szValueOld, *this, szValueNew) ||
+ !DeleteValue(szValueOld) ) {
+ wxLogError(_("Failed to rename registry value '%s' to '%s'."),
+ szValueOld, szValueNew);
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+bool wxRegKey::CopyValue(const wxChar *szValue,
+ wxRegKey& keyDst,
+ const wxChar *szValueNew)
+{
+ if ( !szValueNew ) {
+ // by default, use the same name
+ szValueNew = szValue;
+ }
+
+ switch ( GetValueType(szValue) ) {
+ case Type_String:
+ {
+ wxString strVal;
+ return QueryValue(szValue, strVal) &&
+ keyDst.SetValue(szValueNew, strVal);
+ }
+
+ case Type_Dword:
+ /* case Type_Dword_little_endian: == Type_Dword */
+ {
+ long dwVal;
+ return QueryValue(szValue, &dwVal) &&
+ keyDst.SetValue(szValueNew, dwVal);
+ }
+
+ // 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;
+ }
+}
+
+bool wxRegKey::Rename(const wxChar *szNewName)
+{
+ wxCHECK_MSG( !!m_strKey, FALSE, _T("registry hives can't be renamed") );
+
+ if ( !Exists() ) {
+ wxLogError(_("Registry key '%s' does not exist, cannot rename it."),
+ GetFullName(this));
+
+ return FALSE;
+ }
+
+ // do we stay in the same hive?
+ bool inSameHive = !wxStrchr(szNewName, REG_SEPARATOR);
+
+ // construct the full new name of the key
+ wxRegKey keyDst;
+
+ if ( inSameHive ) {
+ // rename the key to the new name under the same parent
+ wxString strKey = m_strKey.BeforeLast(REG_SEPARATOR);
+ if ( !!strKey ) {
+ // don't add '\\' in the start if strFullNewName is empty
+ strKey += REG_SEPARATOR;
+ }
+
+ strKey += szNewName;
+
+ keyDst.SetName(GetStdKeyFromHkey(m_hRootKey), strKey);
+ }
+ else {
+ // this is the full name already
+ keyDst.SetName(szNewName);
+ }
+
+ bool ok = keyDst.Create(FALSE /* fail if alredy exists */);
+ if ( !ok ) {
+ wxLogError(_("Registry key '%s' already exists."),
+ GetFullName(&keyDst));
+ }
+ else {
+ ok = Copy(keyDst) && DeleteSelf();
+ }
+
+ if ( !ok ) {
+ wxLogError(_("Failed to rename the registry key '%s' to '%s'."),
+ GetFullName(this), GetFullName(&keyDst));
+ }
+ else {
+ m_hRootKey = keyDst.m_hRootKey;
+ m_strKey = keyDst.m_strKey;
+ }
+
+ return ok;
+}
+
+bool wxRegKey::Copy(const wxChar *szNewName)
+{
+ // create the new key first
+ wxRegKey keyDst(szNewName);
+ bool ok = keyDst.Create(FALSE /* fail if alredy exists */);
+ if ( ok ) {
+ ok = Copy(keyDst);
+
+ // we created the dest key but copying to it failed - delete it
+ if ( !ok ) {
+ (void)keyDst.DeleteSelf();
+ }
+ }
+
+ return ok;
+}
+
+bool wxRegKey::Copy(wxRegKey& keyDst)
+{
+ bool ok = TRUE;
+
+ // copy all sub keys to the new location
+ wxString strKey;
+ long lIndex;
+ bool bCont = GetFirstKey(strKey, lIndex);
+ while ( ok && bCont ) {
+ wxRegKey key(*this, strKey);
+ wxString keyName;
+ keyName << GetFullName(&keyDst) << REG_SEPARATOR << strKey;
+ ok = key.Copy((const wxChar*) keyName);
+
+ if ( ok )
+ bCont = GetNextKey(strKey, lIndex);
+ }
+
+ // copy all values
+ wxString strVal;
+ bCont = GetFirstValue(strVal, lIndex);
+ while ( ok && bCont ) {
+ ok = CopyValue(strVal, keyDst);
+
+ if ( !ok ) {
+ wxLogSysError(m_dwLastError,
+ _("Failed to copy registry value '%s'"),
+ strVal.c_str());
+ }
+ else {
+ bCont = GetNextValue(strVal, lIndex);
+ }
+ }
+
+ if ( !ok ) {
+ wxLogError(_("Failed to copy the contents of registry key '%s' to '%s'."), GetFullName(this), GetFullName(&keyDst));
+ }
+
+ return ok;
+}
+
// ----------------------------------------------------------------------------
// delete keys/values
// ----------------------------------------------------------------------------
// 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() || (m_hRootKey != HKCR &&
- m_strKey.Find(REG_SEPARATOR) == wxNOT_FOUND) ) {
- wxLogError(_("Registry key '%s' is needed for normal system operation,\n"
- "deleting it will leave your system in unusable state:\n"
- "operation aborted."), GetFullName(this));
+ if ( m_strKey.IsEmpty() ||
+ ((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));
return FALSE;
}
m_dwLastError = RegDeleteKey((HKEY) m_hRootKey, m_strKey);
if ( m_dwLastError != ERROR_SUCCESS ) {
- wxLogSysError(m_dwLastError, _("can't delete key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't delete key '%s'"),
GetName().c_str());
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'"),
+ wxLogSysError(m_dwLastError, _("Can't delete value '%s' from key '%s'"),
szValue, GetName().c_str());
return FALSE;
}
// 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'"),
+ wxLogSysError(m_dwLastError, _("Can't delete value of key '%s'"),
GetName().c_str());
return FALSE;
}
{
// this function should be silent, so suppress possible messages from Open()
wxLogNull nolog;
-
+
#ifdef __WIN32__
- if ( CONST_CAST Open() ) {
- return RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED,
- NULL, NULL, NULL) == ERROR_SUCCESS;
- }
- else
- return FALSE;
+ if ( !CONST_CAST Open() )
+ 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);
{
// suppress possible messages from GetFirstValue()
wxLogNull nolog;
-
+
// just call GetFirstValue with dummy parameters
wxString str;
long l;
{
// suppress possible messages from GetFirstKey()
wxLogNull nolog;
-
+
// just call GetFirstKey with dummy parameters
wxString str;
long l;
{
// this function should be silent, so suppress possible messages from Open()
wxLogNull nolog;
-
- if ( CONST_CAST Open() )
- return KeyExists(m_hKey, szKey);
- else
+
+ if ( !CONST_CAST Open() )
return FALSE;
+
+ return KeyExists(m_hKey, szKey);
}
wxRegKey::ValueType wxRegKey::GetValueType(const wxChar *szValue) const
m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED,
&dwType, NULL, NULL);
if ( m_dwLastError != ERROR_SUCCESS ) {
- wxLogSysError(m_dwLastError, _("can't read value of key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't read value of key '%s'"),
GetName().c_str());
return Type_None;
}
return TRUE;
}
- wxLogSysError(m_dwLastError, _("can't set value of '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't set value of '%s'"),
GetFullName(this, szValue));
return FALSE;
#endif
m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED,
&dwType, pBuf, &dwSize);
if ( m_dwLastError != ERROR_SUCCESS ) {
- wxLogSysError(m_dwLastError, _("can't read value of key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't read value of key '%s'"),
GetName().c_str());
return FALSE;
}
else {
// check that we read the value of right type
- wxASSERT_MSG( dwType == REG_DWORD,
+ wxASSERT_MSG( IsNumericValue(szValue),
wxT("Type mismatch in wxRegKey::QueryValue().") );
return TRUE;
#endif //Win32
-bool wxRegKey::QueryValue(const wxChar *szValue, wxString& strValue) const
+bool wxRegKey::QueryValue(const wxChar *szValue,
+ wxString& strValue,
+ bool raw) const
{
if ( CONST_CAST Open() ) {
#ifdef __WIN32__
m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED,
&dwType, NULL, &dwSize);
if ( m_dwLastError == ERROR_SUCCESS ) {
- RegString pBuf = (RegString)strValue.GetWriteBuf(dwSize);
- m_dwLastError = RegQueryValueEx((HKEY) m_hKey, WXSTRINGCAST szValue, RESERVED,
- &dwType, pBuf, &dwSize);
- strValue.UngetWriteBuf();
+ 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);
+ m_dwLastError = RegQueryValueEx((HKEY) m_hKey,
+ WXSTRINGCAST szValue,
+ RESERVED,
+ &dwType,
+ pBuf,
+ &dwSize);
+ strValue.UngetWriteBuf();
+
+ // 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 )
+ {
+ wxLogLastError(_T("ExpandEnvironmentStrings"));
+ }
+ }
+ }
+
if ( m_dwLastError == ERROR_SUCCESS ) {
// check that it was the right type
- wxASSERT_MSG( dwType == REG_SZ,
+ wxASSERT_MSG( !IsNumericValue(szValue),
wxT("Type mismatch in wxRegKey::QueryValue().") );
return TRUE;
#endif //WIN16/32
}
- wxLogSysError(m_dwLastError, _("can't read value of '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't read value of '%s'"),
GetFullName(this, szValue));
return FALSE;
}
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);
+ (RegString)strValue.c_str(),
+ (strValue.Len() + 1)*sizeof(wxChar));
if ( m_dwLastError == ERROR_SUCCESS )
return TRUE;
#else //WIN16
#endif //WIN16/32
}
- wxLogSysError(m_dwLastError, _("can't set value of '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't set value of '%s'"),
GetFullName(this, szValue));
return FALSE;
}
-wxRegKey::operator wxString() const
+wxString wxRegKey::QueryDefaultValue() const
{
wxString str;
QueryValue(NULL, str);
m_dwLastError = RegEnumValue((HKEY) m_hKey, lIndex++,
szValueName, &dwValueLen,
- RESERVED,
- NULL, // [out] type
+ RESERVED,
+ NULL, // [out] type
NULL, // [out] buffer for value
NULL); // [i/o] it's length
lIndex = -1;
}
else {
- wxLogSysError(m_dwLastError, _("can't enumerate values of key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't enumerate values of key '%s'"),
GetName().c_str());
}
lIndex = -1;
}
else {
- wxLogSysError(m_dwLastError, _("can't enumerate subkeys of key '%s'"),
+ wxLogSysError(m_dwLastError, _("Can't enumerate subkeys of key '%s'"),
GetName().c_str());
}
// 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 ) {
case Type_Dword:
- case Type_Dword_little_endian:
+ /* case Type_Dword_little_endian: == Type_Dword */
case Type_Dword_big_endian:
return TRUE;
// ============================================================================
// implementation of global private functions
// ============================================================================
+
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);
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