--- /dev/null
+///////////////////////////////////////////////////////////////////////////////
+// Name: palmos/registry.cpp
+// Purpose: implementation of registry classes and functions
+// Author: Vadim Zeitlin
+// Modified by:
+// Created: 03.04.98
+// RCS-ID: $Id$
+// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
+// Licence: wxWindows licence
+// TODO: - parsing of registry key names
+// - support of other (than REG_SZ/REG_DWORD) registry types
+// - add high level functions (RegisterOleServer, ...)
+///////////////////////////////////////////////////////////////////////////////
+
+// This really doesn't apply to the Palm OS platform. It would be better to
+// support the Palm OS preference database instead.
+#ifndef __PALMOS__
+
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+#pragma implementation "registry.h"
+#endif
+
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+// other wxWidgets headers
+#include "wx/string.h"
+#include "wx/intl.h"
+#include "wx/log.h"
+
+#include "wx/palmos/wrapwin.h"
+
+// other std headers
+#include <stdlib.h> // for _MAX_PATH
+
+#ifndef _MAX_PATH
+ #define _MAX_PATH 512
+#endif
+
+// our header
+#define HKEY_DEFINED // already defined in windows.h
+#include "wx/palmos/registry.h"
+
+// some registry functions don't like signed chars
+typedef unsigned char *RegString;
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// the registry name separator (perhaps one day MS will change it to '/' ;-)
+#define REG_SEPARATOR wxT('\\')
+
+// useful for Windows programmers: makes somewhat more clear all these zeroes
+// being passed to Windows APIs
+#define RESERVED (0)
+
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+// const_cast<> is not yet supported by all compilers
+#define CONST_CAST ((wxRegKey *)this)->
+
+// and neither is mutable which m_dwLastError should be
+#define m_dwLastError CONST_CAST m_dwLastError
+
+// ----------------------------------------------------------------------------
+// non member functions
+// ----------------------------------------------------------------------------
+
+// ============================================================================
+// implementation of wxRegKey class
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// static functions and variables
+// ----------------------------------------------------------------------------
+
+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.
+const wxChar *wxRegKey::GetStdKeyName(size_t key)
+{
+ // return empty string if key is invalid
+ wxCHECK_MSG( key < nStdKeys, wxEmptyString, wxT("invalid key in wxRegKey::GetStdKeyName") );
+
+ return aStdKeys[key].szName;
+}
+
+const wxChar *wxRegKey::GetStdKeyShortName(size_t key)
+{
+ // return empty string if key is invalid
+ wxCHECK( key < nStdKeys, wxEmptyString );
+
+ return aStdKeys[key].szShortName;
+}
+
+wxRegKey::StdKey wxRegKey::ExtractKeyName(wxString& strKey)
+{
+ 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 ||
+ strRoot.CmpNoCase(aStdKeys[ui].szShortName) == 0 ) {
+ hRootKey = aStdKeys[ui].hkey;
+ break;
+ }
+ }
+
+ if ( ui == nStdKeys ) {
+ wxFAIL_MSG(wxT("invalid key prefix in wxRegKey::ExtractKeyName."));
+
+ hRootKey = HKEY_CLASSES_ROOT;
+ }
+ else {
+ strKey = strKey.After(REG_SEPARATOR);
+ if ( !strKey.IsEmpty() && strKey.Last() == REG_SEPARATOR )
+ strKey.Truncate(strKey.Len() - 1);
+ }
+
+ return (wxRegKey::StdKey)(int)hRootKey;
+}
+
+wxRegKey::StdKey wxRegKey::GetStdKeyFromHkey(WXHKEY hkey)
+{
+ for ( size_t ui = 0; ui < nStdKeys; ui++ ) {
+ if ( (int) aStdKeys[ui].hkey == (int) hkey )
+ return (StdKey)ui;
+ }
+
+ wxFAIL_MSG(wxT("non root hkey passed to wxRegKey::GetStdKeyFromHkey."));
+
+ return HKCR;
+}
+
+// ----------------------------------------------------------------------------
+// ctors and dtor
+// ----------------------------------------------------------------------------
+
+wxRegKey::wxRegKey()
+{
+ m_hRootKey = (WXHKEY) aStdKeys[HKCR].hkey;
+
+ Init();
+}
+
+wxRegKey::wxRegKey(const wxString& strKey) : m_strKey(strKey)
+{
+ m_hRootKey = (WXHKEY) aStdKeys[ExtractKeyName(m_strKey)].hkey;
+
+ Init();
+}
+
+// parent is a predefined (and preopened) key
+wxRegKey::wxRegKey(StdKey keyParent, const wxString& strKey) : m_strKey(strKey)
+{
+ RemoveTrailingSeparator(m_strKey);
+ m_hRootKey = (WXHKEY) aStdKeys[keyParent].hkey;
+
+ Init();
+}
+
+// parent is a normal regkey
+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) ) {
+ m_strKey += REG_SEPARATOR;
+ }
+
+ m_strKey += strKey;
+ RemoveTrailingSeparator(m_strKey);
+
+ m_hRootKey = keyParent.m_hRootKey;
+
+ Init();
+}
+
+// dtor closes the key releasing system resource
+wxRegKey::~wxRegKey()
+{
+ Close();
+}
+
+// ----------------------------------------------------------------------------
+// change the key name/hkey
+// ----------------------------------------------------------------------------
+
+// set the full key name
+void wxRegKey::SetName(const wxString& strKey)
+{
+ Close();
+
+ m_strKey = strKey;
+ m_hRootKey = (WXHKEY) aStdKeys[ExtractKeyName(m_strKey)].hkey;
+}
+
+// the name is relative to the parent key
+void wxRegKey::SetName(StdKey keyParent, const wxString& strKey)
+{
+ Close();
+
+ m_strKey = strKey;
+ RemoveTrailingSeparator(m_strKey);
+ m_hRootKey = (WXHKEY) aStdKeys[keyParent].hkey;
+}
+
+// the name is relative to the parent key
+void wxRegKey::SetName(const wxRegKey& keyParent, const wxString& strKey)
+{
+ Close();
+
+ // combine our name with parent's to get the full name
+
+ // 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;
+
+ RemoveTrailingSeparator(m_strKey);
+
+ m_hRootKey = keyParent.m_hRootKey;
+}
+
+// hKey should be opened and will be closed in wxRegKey dtor
+void wxRegKey::SetHkey(WXHKEY hKey)
+{
+ Close();
+
+ m_hKey = hKey;
+}
+
+// ----------------------------------------------------------------------------
+// info about the key
+// ----------------------------------------------------------------------------
+
+// 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);
+}
+
+// returns the full name of the key (prefix is abbreviated if bShortPrefix)
+wxString wxRegKey::GetName(bool bShortPrefix) const
+{
+ StdKey key = GetStdKeyFromHkey((WXHKEY) m_hRootKey);
+ wxString str = bShortPrefix ? aStdKeys[key].szShortName
+ : aStdKeys[key].szName;
+ if ( !m_strKey.IsEmpty() )
+ str << _T("\\") << m_strKey;
+
+ return str;
+}
+
+bool wxRegKey::GetKeyInfo(size_t *pnSubKeys,
+ size_t *pnMaxKeyLen,
+ size_t *pnValues,
+ size_t *pnMaxValueLen) const
+{
+ // 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'"),
+ GetName().c_str());
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// operations
+// ----------------------------------------------------------------------------
+
+// opens key (it's not an error to call Open() on an already opened key)
+bool wxRegKey::Open(AccessMode mode)
+{
+ if ( IsOpened() )
+ return TRUE;
+
+ 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;
+ }
+
+ m_hKey = (WXHKEY) tmpKey;
+ 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 ( IsOpened() )
+ 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;
+ }
+ else
+ {
+ m_hKey = (WXHKEY) tmpKey;
+ return TRUE;
+ }
+}
+
+// close the key, it's not an error to call it when not opened
+bool wxRegKey::Close()
+{
+ 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'"),
+ GetName().c_str());
+
+ return FALSE;
+ }
+ }
+
+ 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
+// ----------------------------------------------------------------------------
+bool wxRegKey::DeleteSelf()
+{
+ {
+ wxLogNull nolog;
+ if ( !Open() ) {
+ // it already doesn't exist - ok!
+ 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() ||
+ ((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;
+ }
+
+ // we can't delete keys while enumerating because it confuses GetNextKey, so
+ // we first save the key names and then delete them all
+ wxArrayString astrSubkeys;
+
+ wxString strKey;
+ long lIndex;
+ bool bCont = GetFirstKey(strKey, lIndex);
+ while ( bCont ) {
+ astrSubkeys.Add(strKey);
+
+ bCont = GetNextKey(strKey, lIndex);
+ }
+
+ size_t nKeyCount = astrSubkeys.Count();
+ for ( size_t nKey = 0; nKey < nKeyCount; nKey++ ) {
+ wxRegKey key(*this, astrSubkeys[nKey]);
+ if ( !key.DeleteSelf() )
+ return FALSE;
+ }
+
+ // now delete this key itself
+ Close();
+
+ m_dwLastError = RegDeleteKey((HKEY) m_hRootKey, m_strKey);
+ // 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 TRUE;
+}
+
+bool wxRegKey::DeleteKey(const wxChar *szKey)
+{
+ if ( !Open() )
+ return FALSE;
+
+ wxRegKey key(*this, szKey);
+ return key.DeleteSelf();
+}
+
+bool wxRegKey::DeleteValue(const wxChar *szValue)
+{
+ if ( !Open() )
+ return FALSE;
+
+ m_dwLastError = RegDeleteValue((HKEY) m_hKey, WXSTRINGCAST szValue);
+
+ // 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;
+ }
+
+ return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// access to values and subkeys
+// ----------------------------------------------------------------------------
+
+// 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;
+
+ if ( !CONST_CAST Open() )
+ return FALSE;
+
+ LONG dwRet = ::RegQueryValueEx((HKEY) m_hKey,
+ WXSTRINGCAST szValue,
+ RESERVED,
+ NULL, NULL, NULL);
+ return dwRet == ERROR_SUCCESS;
+}
+
+// returns TRUE if this key has any values
+bool wxRegKey::HasValues() const
+{
+ // suppress possible messages from GetFirstValue()
+ wxLogNull nolog;
+
+ // just call GetFirstValue with dummy parameters
+ wxString str;
+ long l;
+ return CONST_CAST GetFirstValue(str, l);
+}
+
+// returns TRUE if this key has any subkeys
+bool wxRegKey::HasSubkeys() const
+{
+ // suppress possible messages from GetFirstKey()
+ wxLogNull nolog;
+
+ // just call GetFirstKey with dummy parameters
+ wxString str;
+ long l;
+ return CONST_CAST GetFirstKey(str, l);
+}
+
+// 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;
+
+ return KeyExists(m_hKey, szKey);
+}
+
+wxRegKey::ValueType wxRegKey::GetValueType(const wxChar *szValue) const
+{
+ if ( ! CONST_CAST Open() )
+ return Type_None;
+
+ DWORD dwType;
+ 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'"),
+ GetName().c_str());
+ return Type_None;
+ }
+
+ return (ValueType)dwType;
+}
+
+#ifdef __WIN32__
+bool wxRegKey::SetValue(const wxChar *szValue, long lValue)
+{
+ 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;
+ }
+
+ wxLogSysError(m_dwLastError, _("Can't set value of '%s'"),
+ GetFullName(this, szValue));
+ return FALSE;
+}
+
+bool wxRegKey::QueryValue(const wxChar *szValue, long *plValue) const
+{
+ if ( CONST_CAST Open() ) {
+ DWORD dwType, dwSize = sizeof(DWORD);
+ RegString pBuf = (RegString)plValue;
+ 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'"),
+ GetName().c_str());
+ return FALSE;
+ }
+ else {
+ // check that we read the value of right type
+ wxASSERT_MSG( IsNumericValue(szValue),
+ wxT("Type mismatch in wxRegKey::QueryValue().") );
+
+ return TRUE;
+ }
+ }
+ else
+ return FALSE;
+}
+
+#endif //Win32
+
+bool wxRegKey::QueryValue(const wxChar *szValue,
+ wxString& strValue,
+ bool raw) const
+{
+ if ( CONST_CAST Open() ) {
+
+ // 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 {
+ 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 )
+ {
+ 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().") );
+
+ return TRUE;
+ }
+ }
+ }
+
+ 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() ) {
+ 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;
+ }
+
+ wxLogSysError(m_dwLastError, _("Can't set value of '%s'"),
+ GetFullName(this, szValue));
+ return FALSE;
+}
+
+wxString wxRegKey::QueryDefaultValue() const
+{
+ wxString str;
+ QueryValue(NULL, str);
+ return str;
+}
+
+// ----------------------------------------------------------------------------
+// enumeration
+// NB: all these functions require an index variable which allows to have
+// several concurrently running indexations on the same key
+// ----------------------------------------------------------------------------
+
+bool wxRegKey::GetFirstValue(wxString& strValueName, long& lIndex)
+{
+ if ( !Open() )
+ return FALSE;
+
+ lIndex = 0;
+ return GetNextValue(strValueName, lIndex);
+}
+
+bool wxRegKey::GetNextValue(wxString& strValueName, long& lIndex) const
+{
+ wxASSERT( IsOpened() );
+
+ // are we already at the end of enumeration?
+ if ( lIndex == -1 )
+ return FALSE;
+
+ wxChar szValueName[1024]; // @@ use RegQueryInfoKey...
+ DWORD dwValueLen = WXSIZEOF(szValueName);
+
+ m_dwLastError = RegEnumValue((HKEY) m_hKey, lIndex++,
+ szValueName, &dwValueLen,
+ RESERVED,
+ NULL, // [out] type
+ NULL, // [out] buffer for value
+ NULL); // [i/o] it's length
+
+ if ( m_dwLastError != ERROR_SUCCESS ) {
+ if ( m_dwLastError == ERROR_NO_MORE_ITEMS ) {
+ m_dwLastError = ERROR_SUCCESS;
+ lIndex = -1;
+ }
+ else {
+ wxLogSysError(m_dwLastError, _("Can't enumerate values of key '%s'"),
+ GetName().c_str());
+ }
+
+ return FALSE;
+ }
+
+ strValueName = szValueName;
+
+ return TRUE;
+}
+
+bool wxRegKey::GetFirstKey(wxString& strKeyName, long& lIndex)
+{
+ if ( !Open() )
+ return FALSE;
+
+ lIndex = 0;
+ return GetNextKey(strKeyName, lIndex);
+}
+
+bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const
+{
+ wxASSERT( IsOpened() );
+
+ // are we already at the end of enumeration?
+ if ( lIndex == -1 )
+ 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 ) {
+ m_dwLastError = ERROR_SUCCESS;
+ lIndex = -1;
+ }
+ else {
+ wxLogSysError(m_dwLastError, _("Can't enumerate subkeys of key '%s'"),
+ GetName().c_str());
+ }
+
+ return FALSE;
+ }
+
+ strKeyName = szKeyName;
+ return TRUE;
+}
+
+// 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: == Type_Dword */
+ case Type_Dword_big_endian:
+ return TRUE;
+
+ default:
+ return FALSE;
+ }
+ }
+
+// ============================================================================
+// 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 ( ::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)
+{
+ static wxString s_str;
+ s_str = pKey->GetName();
+ if ( !wxIsEmpty(szValue) )
+ s_str << wxT("\\") << szValue;
+
+ return s_str.c_str();
+}
+
+void RemoveTrailingSeparator(wxString& str)
+{
+ if ( !str.IsEmpty() && str.Last() == REG_SEPARATOR )
+ str.Truncate(str.Len() - 1);
+}
+
+#endif //Palm OS
+
projects / wxWidgets.git / blobdiff