1 files changed, 246 insertions, 141 deletions

diff --git a/qmake/tools/qsettings.cpp b/qmake/tools/qsettings.cpp
index 5de105c..35fc039 100644
--- a/qmake/tools/qsettings.cpp
+++ b/qmake/tools/qsettings.cpp
@@ -1,12 +1,12 @@
 /****************************************************************************
 ** $Id$
 **
 ** Implementation of QSettings class
 **
-** Created: 2000.06.26
+** Created : 000626
 **
 ** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
 **
 ** This file is part of the tools module of the Qt GUI Toolkit.
 **
 ** This file may be distributed under the terms of the Q Public License
@@ -60,35 +60,35 @@ static inline int qt_open( const char *pathname, int flags, mode_t mode )
 #include "qtextstream.h"
 #include "qregexp.h"
 #include <private/qsettings_p.h>
 #include <errno.h>
 
 /*!
-  \class QSettings
-  \brief The QSettings class provides persistent platform-independent application settings.
-
-  \ingroup io
-  \ingroup misc
-  \mainclass
-
-  On Unix systems, QSettings uses text files to store settings. On Windows
-  systems, QSettings uses the system registry.  On Mac OS X, QSettings will
-  behave as on Unix, and store to text files.
-
-  Each setting comprises an identifying key and the data associated with
-  the key. A key is a unicode string which consists of \e two or more
-  subkeys. A subkey is a slash, '/', followed by one or more unicode
-  characters (excluding slashes, newlines, carriage returns and equals,
-  '=', signs). The associated data, called the entry or value, may be a
-  boolean, an integer, a double, a string or a list of strings. Entry
-  strings may contain any unicode characters.
-
-  If you want to save and restore the entire desktop's settings, i.e.
-  which applications are running, use QSettings to save the settings
-  for each individual application and QSessionManager to save the
-  desktop's session.
+    \class QSettings
+    \brief The QSettings class provides persistent platform-independent application settings.
+
+    \ingroup io
+    \ingroup misc
+    \mainclass
+
+    On Unix systems, QSettings uses text files to store settings. On Windows
+    systems, QSettings uses the system registry.  On Mac OS X, QSettings uses
+    the Carbon preferences API.
+
+    Each setting comprises an identifying key and the data associated with
+    the key. A key is a unicode string which consists of \e two or more
+    subkeys. A subkey is a slash, '/', followed by one or more unicode
+    characters (excluding slashes, newlines, carriage returns and equals,
+    '=', signs). The associated data, called the entry or value, may be a
+    boolean, an integer, a double, a string or a list of strings. Entry
+    strings may contain any unicode characters.
+
+    If you want to save and restore the entire desktop's settings, i.e.
+    which applications are running, use QSettings to save the settings
+    for each individual application and QSessionManager to save the
+    desktop's session.
 
     Example settings:
     \code
     /MyCompany/MyApplication/background color
     /MyCompany/MyApplication/foreground color
     /MyCompany/MyApplication/geometry/x
@@ -98,33 +98,48 @@ static inline int qt_open( const char *pathname, int flags, mode_t mode )
     /MyCompany/MyApplication/recent files/1
     /MyCompany/MyApplication/recent files/2
     /MyCompany/MyApplication/recent files/3
     \endcode
     Each line above is a complete key, made up of subkeys.
 
-    A typical usage pattern for application startup:
+    A typical usage pattern for reading application startup:
     \code
     QSettings settings;
-    settings.insertSearchPath( QSettings::Windows, "/MyCompany" );
-    // No search path needed for Unix; see notes further on.
-    // Use default values if the keys don't exist
-    QString bgColor = settings.readEntry( "/MyApplication/background color", "white" );
-    int width = settings.readNumEntry( "/MyApplication/geometry/width", 640 );
+    settings.setPath( "MyCompany.com", "MyApplication" );
+
+    QString bgColor = settings.readEntry( "/colors/background", "white" );
+    int width = settings.readNumEntry( "/geometry/width", 640 );
     // ...
     \endcode
 
     A typical usage pattern for application exit or 'save preferences':
     \code
     QSettings settings;
-    settings.insertSearchPath( QSettings::Windows, "/MyCompany" );
-    // No search path needed for Unix; see notes further on.
-    settings.writeEntry( "/MyApplication/background color", bgColor );
-    settings.writeEntry( "/MyApplication/geometry/width", width );
+    settings.setPath( "MyCompany.com", "MyApplication" );
+
+    settings.writeEntry( "/colors/background", bgColor );
+    settings.writeEntry( "/geometry/width", width );
     // ...
     \endcode
 
+    QSettings can build a key prefix that is prepended to all keys. To
+    build the key prefix, use beginGroup() and endGroup().
+    \code
+    QSettings settings;
+
+    settings.beginGroup( "/MainWindow" );
+        settings.beginGroup( "/Geometry" );
+            int x = settings.readEntry( "/x" );
+            // ...
+        settings.endGroup();
+        settings.beginGroup( "/Toolbars" );
+            // ...
+        settings.endGroup();
+    settings.endGroup();
+    \endcode
+
     You can get a list of entry-holding keys by calling entryList(), and
     a list of key-holding keys using subkeyList().
 
     \code
     QStringList keys = entryList( "/MyApplication" );
     // keys contains 'background color' and 'foreground color'.
@@ -136,26 +151,40 @@ static inline int qt_open( const char *pathname, int flags, mode_t mode )
     // subkeys contains 'geometry' and 'recent files'
 
     QStringList subkeys = subkeyList( "/MyApplication/recent files" );
     // subkeys is empty.
     \endcode
 
-    If you wish to use a different search path call insertSearchPath()
-    as often as necessary to add your preferred paths. Call
-    removeSearchPath() to remove any unwanted paths.
-
     Since settings for Windows are stored in the registry there are size
     limits as follows:
     \list
     \i A subkey may not exceed 255 characters.
     \i An entry's value may not exceed 16,300 characters.
     \i All the values of a key (for example, all the 'recent files'
     subkeys values), may not exceed 65,535 characters.
     \endlist
 
-    These limitations are not enforced on Unix.
+    These limitations are not enforced on Unix or Mac OS X.
+
+    If you wish to use a different search path call insertSearchPath()
+    as often as necessary to add your preferred paths. Call
+    removeSearchPath() to remove any unwanted paths.
+
+    \section1 Notes for Mac OS X Applications
+
+    Internal to the CFPreferences API it is not defined (for Mac OS 9
+    support) where the settings will ultimitely be stored. However, at the
+    time of this writing the settings will be stored (either on a global or
+    user basis, preferring locally) into a plist file in
+    $ROOT/System/Library/Preferences (in XML format). QSettings will create
+    an appropriate plist file (com.<first group name>.plist) out of the
+    full path to a key.
+
+    For further information on CFPreferences see also
+    \link http://developer.apple.com/techpubs/macosx/CoreFoundation/PreferenceServices/preferenceservices_carbon.html
+    Apple's Specifications\endlink
 
     \section1 Notes for Unix Applications
 
     There is no universally accepted place for storing application
     settings under Unix. In the examples the settings file will be
     searched for in the following directories:
@@ -297,26 +326,26 @@ static HANDLE openlock( const QString &name, int /*type*/ )
     QT_WA( {
         fd = CreateFileW( (TCHAR*)name.ucs2(), GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
     } , {
         fd = CreateFileA( name.local8Bit(), GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
     } );
 
-    if ( !LockFile( fd, 0, 0, -1, -1 ) ) {
+    if ( !LockFile( fd, 0, 0, (DWORD)-1, (DWORD)-1 ) ) { // ### (DWORD)-1 ???
 #ifdef QT_CHECK_STATE
         qWarning( "QSettings: openlock failed!" );
 #endif
     }
     return fd;
 }
 
-void closelock( HANDLE fd )
+static void closelock( HANDLE fd )
 {
     if ( !fd )
         return;
 
-    if ( !UnlockFile( fd, 0, 0, -1, -1 ) ) {
+    if ( !UnlockFile( fd, 0, 0, (DWORD)-1, (DWORD)-1 ) ) { // ### (DWORD)-1 ???
 #ifdef QT_CHECK_STATE
         qWarning( "QSettings: closelock failed!");
 #endif
     }
     CloseHandle( fd );
 }
@@ -452,15 +481,17 @@ void QSettingsHeading::parseLine(QTextStream &stream)
 
 #endif
 
 QSettingsPrivate::QSettingsPrivate( QSettings::Format format )
     : groupDirty( TRUE ), modified(FALSE), globalScope(TRUE)
 {
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( format != QSettings::Ini )
         return;
+#else
+    Q_UNUSED( format );
 #endif
 
     QString appSettings(QDir::homeDirPath() + "/.qt/");
     QString defPath;
 #ifdef Q_WS_WIN
 #ifdef Q_OS_TEMP
@@ -503,12 +534,14 @@ QSettingsPrivate::QSettingsPrivate( QSettings::Format format )
 #endif
     QDir dir(appSettings);
     if (! dir.exists()) {
         if (! dir.mkdir(dir.path()))
 #if defined(QT_CHECK_STATE)
             qWarning("QSettings: error creating %s", dir.path().latin1());
+#else
+            ;
 #endif
     }
 
     if ( !!defPath )
         searchPaths.append(defPath);
     searchPaths.append(dir.path());
@@ -527,12 +560,14 @@ QSettingsGroup QSettingsPrivate::readGroup()
     if (headingsit != headings.end())
         hd = *headingsit;
 
     QSettingsHeading::Iterator grpit = hd.find(group);
     if (grpit == hd.end()) {
         QStringList::Iterator it = searchPaths.begin();
+        if ( !globalScope )
+            ++it;
         while (it != searchPaths.end()) {
             QString filebase = heading.lower().replace(QRegExp("\\s+"), "_");
             QString fn((*it++) + "/" + filebase + "rc");
             if (! hd.contains(fn + "cached")) {
                 hd.read(fn);
                 hd.insert(fn + "cached", QSettingsGroup());
@@ -561,12 +596,14 @@ void QSettingsPrivate::removeGroup(const QString &key)
     if (headingsit != headings.end())
         hd = *headingsit;
 
     QSettingsHeading::Iterator grpit = hd.find(group);
     if (grpit == hd.end()) {
         QStringList::Iterator it = searchPaths.begin();
+        if ( !globalScope )
+            ++it;
         while (it != searchPaths.end()) {
             QString filebase = heading.lower().replace(QRegExp("\\s+"), "_");
             QString fn((*it++) + "/" + filebase + "rc");
             if (! hd.contains(fn + "cached")) {
                 hd.read(fn);
                 hd.insert(fn + "cached", QSettingsGroup());
@@ -612,12 +649,14 @@ void QSettingsPrivate::writeGroup(const QString &key, const QString &value)
     if (headingsit != headings.end())
         hd = *headingsit;
 
     QSettingsHeading::Iterator grpit = hd.find(group);
     if (grpit == hd.end()) {
         QStringList::Iterator it = searchPaths.begin();
+        if ( !globalScope )
+            ++it;
         while (it != searchPaths.end()) {
             QString filebase = heading.lower().replace(QRegExp("\\s+"), "_");
             QString fn((*it++) + "/" + filebase + "rc");
             if (! hd.contains(fn + "cached")) {
                 hd.read(fn);
                 hd.insert(fn + "cached", QSettingsGroup());
@@ -646,32 +685,40 @@ QDateTime QSettingsPrivate::modificationTime()
     QSettingsHeading hd = headings[heading];
     QSettingsGroup grp = hd[group];
 
     QDateTime datetime;
 
     QStringList::Iterator it = searchPaths.begin();
+    if ( !globalScope )
+        ++it;
     while (it != searchPaths.end()) {
         QFileInfo fi((*it++) + "/" + heading + "rc");
         if (fi.exists() && fi.lastModified() > datetime)
             datetime = fi.lastModified();
     }
 
     return datetime;
 }
 
-static bool verifyKey( const QString &key )
+bool qt_verify_key( const QString &key )
 {
     if ( key.isEmpty() || key[0] != '/' || key.contains( QRegExp("[=\\\\r\\\\n" ) ) )
         return FALSE;
     return TRUE;
 }
 
 static inline QString groupKey( const QString &group, const QString &key )
 {
-    if ( group.endsWith( "/" ) || key.startsWith( "/" ) )
+    if ( group.isEmpty() || ( group.length() == 1 && group[0] == '/' ) ) {
+        // group is empty, or it contains a single '/', so we just return the key
+        if ( key.startsWith( "/" ) )
+            return key;
+        return "/" + key;
+    } else if ( group.endsWith( "/" ) || key.startsWith( "/" ) ) {
         return group + key;
+    }
     return group + "/" + key;
 }
 
 /*!
   Inserts \a path into the settings search path. The semantics of \a
   path depends on the system \a s.
@@ -683,13 +730,13 @@ static inline QString groupKey( const QString &group, const QString &key )
   When \a s is \e Windows, and the execution environment is Windows, the
   search path list will be used as the first subfolder of the "Software"
   folder in the registry.
 
   When reading settings the folders are searched forwards from the
   first folder (listed below) to the last, returning the first
-  settings found, and ignoring any folders for which the user doesn't 
+  settings found, and ignoring any folders for which the user doesn't
   have read permission.
   \list 1
   \i HKEY_CURRENT_USER/Software/MyCompany/MyApplication
   \i HKEY_LOCAL_MACHINE/Software/MyCompany/MyApplication
   \i HKEY_CURRENT_USER/Software/MyApplication
   \i HKEY_LOCAL_MACHINE/Software/MyApplication
@@ -707,13 +754,13 @@ static inline QString groupKey( const QString &group, const QString &key )
   \i HKEY_LOCAL_MACHINE/Software/MyCompany/MyApplication
   \i HKEY_CURRENT_USER/Software/MyCompany/MyApplication
   \i HKEY_LOCAL_MACHINE/Software/MyApplication
   \i HKEY_CURRENT_USER/Software/MyApplication
   \endlist
   If a setting is found in the HKEY_CURRENT_USER space, this setting
-  is overwritten independently of write permissions in the 
+  is overwritten independently of write permissions in the
   HKEY_LOCAL_MACHINE space.
 
   When \a s is \e Unix, and the execution environment is Unix, the
   search path list will be used when trying to determine a suitable
   filename for reading and writing settings files. By default, there are
   two entries in the search path:
@@ -754,40 +801,55 @@ static inline QString groupKey( const QString &group, const QString &key )
 
   \sa removeSearchPath()
 
 */
 void QSettings::insertSearchPath( System s, const QString &path)
 {
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd ) {
         d->sysInsertSearchPath( s, path );
         return;
     }
 #endif
 
-    if ( !verifyKey( path ) ) {
+#if !defined(Q_WS_WIN)
+    if ( s == Windows )
+        return;
+#endif
+#if !defined(Q_WS_WIN)
+    if ( s == Mac )
+        return;
+#endif
+
+    if ( !qt_verify_key( path ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::insertSearchPath: Invalid key: '%s'", path.isNull() ? "(null)" : path.latin1() );
 #endif
         return;
     }
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd && s != Unix ) {
 #else
     if ( s != Unix ) {
 #endif
-#ifdef Q_OS_MAC
+#if !defined(QWS) && defined(Q_OS_MAC)
         if(s != Mac) //mac is respected on the mac as well
 #endif
             return;
     }
 
+    QString realPath = path;
+#if defined(Q_WS_WIN)
+    QString defPath = d->globalScope ? d->searchPaths.first() : d->searchPaths.last();
+    realPath = defPath + path;
+#endif
+
     QStringList::Iterator it = d->searchPaths.find(d->searchPaths.last());
     if (it != d->searchPaths.end()) {
-        d->searchPaths.insert(it, path);
+        d->searchPaths.insert(it, realPath);
     }
 }
 
 
 /*!
   Removes all occurrences of \a path (using exact matching) from the
@@ -795,31 +857,31 @@ void QSettings::insertSearchPath( System s, const QString &path)
   paths cannot be removed.
 
   \sa insertSearchPath()
 */
 void QSettings::removeSearchPath( System s, const QString &path)
 {
-    if ( !verifyKey( path ) ) {
+    if ( !qt_verify_key( path ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::insertSearchPath: Invalid key: '%s'", path.isNull() ? "(null)" : path.latin1() );
 #endif
         return;
     }
 
 #ifdef Q_WS_WIN
     if ( d->sysd ) {
         d->sysRemoveSearchPath( s, path );
         return;
     }
 #endif
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd && s != Unix ) {
 #else
     if ( s != Unix ) {
 #endif
-#ifdef Q_OS_MAC
+#if !defined(QWS) && defined(Q_OS_MAC)
         if(s != Mac) //mac is respected on the mac as well
 #endif
             return;
     }
 
     if (path == d->searchPaths.first() || path == d->searchPaths.last())
@@ -834,13 +896,13 @@ void QSettings::removeSearchPath( System s, const QString &path)
 */
 QSettings::QSettings()
 {
     d = new QSettingsPrivate( Native );
     Q_CHECK_PTR(d);
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     d->sysd = 0;
     d->sysInit();
 #endif
 }
 
 /*!
@@ -851,13 +913,13 @@ QSettings::QSettings()
 */
 QSettings::QSettings( Format format )
 {
     d = new QSettingsPrivate( format );
     Q_CHECK_PTR(d);
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     d->sysd = 0;
     if ( format == Native )
         d->sysInit();
 #else
     Q_UNUSED(format);
 #endif
@@ -869,13 +931,13 @@ QSettings::QSettings( Format format )
 
 */
 QSettings::~QSettings()
 {
     sync();
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         d->sysClear();
 #endif
 
     delete d;
 }
@@ -884,13 +946,13 @@ QSettings::~QSettings()
 /*! \internal
   Writes all modifications to the settings to disk.  If any errors are
   encountered, this function returns FALSE, otherwise it will return TRUE.
 */
 bool QSettings::sync()
 {
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return d->sysSync();
 #endif
     if (! d->modified)
         // fake success
         return TRUE;
@@ -902,27 +964,29 @@ bool QSettings::sync()
         // determine filename
         QSettingsHeading hd(*it);
         QSettingsHeading::Iterator hdit = hd.begin();
         QFile file;
 
         QStringList::Iterator pit = d->searchPaths.begin();
+        if ( !d->globalScope )
+            ++pit;
         while (pit != d->searchPaths.end()) {
             QString filebase = it.key().lower().replace(QRegExp("\\s+"), "_");
             QFileInfo di(*pit);
             QFileInfo fi((*pit++) + "/" + filebase + "rc");
 
             if ((fi.exists() && fi.isFile() && fi.isWritable()) ||
                 (! fi.exists() && di.isDir() && di.isWritable())) {
                 file.setName(fi.filePath());
                 break;
             }
         }
 
-        it++;
+        ++it;
 
-        if (file.name().isNull() || file.name().isEmpty()) {
+        if ( file.name().isEmpty() ) {
 
 #ifdef QT_CHECK_STATE
             qWarning("QSettings::sync: filename is null/empty");
 #endif // QT_CHECK_STATE
 
             success = FALSE;
@@ -960,19 +1024,19 @@ bool QSettings::sync()
                     } else {
                         v.replace("\\", "\\\\"); // escape backslash
                         v.replace("\n", "\\n"); // escape newlines
                     }
 
                     stream << grpit.key() << "=" << v << endl;
-                    grpit++;
+                    ++grpit;
                 }
 
                 stream << endl;
             }
 
-            hdit++;
+            ++hdit;
         }
 
         if (file.status() != IO_Ok) {
 
 #ifdef QT_CHECK_STATE
             qWarning("QSettings::sync: error at end of write");
@@ -1005,29 +1069,28 @@ bool QSettings::sync()
 
 /*!
     \internal
 */
 bool QSettings::readBoolEntry(const QString &key, bool def, bool *ok )
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::readBoolEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
             if ( ok )
             *ok = FALSE;
 
         return def;
     }
 
-    QString theKey = groupKey( group(), key );
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
-        return d->sysReadBoolEntry( theKey, def, ok );
+        return d->sysReadBoolEntry( groupKey( group(), key ), def, ok );
 #endif
 
-    QString value = readEntry( theKey, ( def ? "true" : "false" ), ok );
+    QString value = readEntry( key, ( def ? "true" : "false" ), ok );
 
     if (value.lower() == "true")
         return TRUE;
     else if (value.lower() == "false")
         return FALSE;
     else if (value == "1")
@@ -1057,29 +1120,28 @@ bool QSettings::readBoolEntry(const QString &key, bool def, bool *ok )
 
 /*!
     \internal
 */
 double QSettings::readDoubleEntry(const QString &key, double def, bool *ok )
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::readDoubleEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
             if ( ok )
             *ok = FALSE;
 
         return def;
     }
 
-    QString theKey = groupKey( group(), key );
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
-        return d->sysReadDoubleEntry( theKey, def, ok );
+        return d->sysReadDoubleEntry( groupKey( group(), key ), def, ok );
 #endif
 
-    QString value = readEntry( theKey, QString::number(def), ok );
+    QString value = readEntry( key, QString::number(def), ok );
     bool conv_ok;
     double retval = value.toDouble( &conv_ok );
     if ( conv_ok )
         return retval;
     if ( ! value.isEmpty() )
         qWarning( "QSettings::readDoubleEntry: '%s' is not a number",
@@ -1103,29 +1165,27 @@ double QSettings::readDoubleEntry(const QString &key, double def, bool *ok )
 
 /*!
     \internal
 */
 int QSettings::readNumEntry(const QString &key, int def, bool *ok )
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::readNumEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         if ( ok )
             *ok = FALSE;
         return def;
     }
 
-    QString theKey = groupKey( group(), key );
-
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
-        return d->sysReadNumEntry( theKey, def, ok );
+        return d->sysReadNumEntry( groupKey( group(), key ), def, ok );
 #endif
 
-    QString value = readEntry( theKey, QString::number( def ), ok );
+    QString value = readEntry( key, QString::number( def ), ok );
     bool conv_ok;
     int retval = value.toInt( &conv_ok );
     if ( conv_ok )
         return retval;
     if ( ! value.isEmpty() )
         qWarning( "QSettings::readNumEntry: '%s' is not a number",
@@ -1149,25 +1209,25 @@ int QSettings::readNumEntry(const QString &key, int def, bool *ok )
 
 /*!
     \internal
 */
 QString QSettings::readEntry(const QString &key, const QString &def, bool *ok )
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::readEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         if ( ok )
             *ok = FALSE;
 
         return def;
     }
 
     QString theKey = groupKey( group(), key );
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return d->sysReadEntry( theKey, def, ok );
 #endif
 
     if ( ok ) // no, everything is not ok
         *ok = FALSE;
@@ -1203,17 +1263,19 @@ QString QSettings::readEntry(const QString &key, const QString &def, bool *ok )
             realkey = list.join("/");
         }
     } else
             realkey = theKey;
 
     QSettingsGroup grp = d->readGroup();
-    QString retval = grp[realkey];
-    if ( retval.isNull() )
-        retval = def;
-    else if ( ok ) // everything is ok
-        *ok = TRUE;
+    QSettingsGroup::const_iterator it = grp.find( realkey ), end = grp.end();
+    QString retval = def;
+    if ( it != end ) {
+        // found the value we needed
+        retval = *it;
+        if ( ok ) *ok = TRUE;
+    }
     return retval;
 }
 
 
 #if !defined(Q_NO_BOOL_TYPE)
 /*!
@@ -1225,27 +1287,25 @@ QString QSettings::readEntry(const QString &key, const QString &def, bool *ok )
     returned; otherwise TRUE is returned.
 
   \sa readListEntry(), readNumEntry(), readDoubleEntry(), readBoolEntry(), removeEntry()
 */
 bool QSettings::writeEntry(const QString &key, bool value)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::writeEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return FALSE;
     }
 
-    QString theKey = groupKey( group(), key );
-
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
-        return d->sysWriteEntry( theKey, value );
+        return d->sysWriteEntry( groupKey( group(), key ), value );
 #endif
     QString s(value ? "true" : "false");
-    return writeEntry(theKey, s);
+    return writeEntry(key, s);
 }
 #endif
 
 
 /*!
     \overload
@@ -1257,27 +1317,25 @@ bool QSettings::writeEntry(const QString &key, bool value)
     returned; otherwise TRUE is returned.
 
   \sa readListEntry(), readNumEntry(), readDoubleEntry(), readBoolEntry(), removeEntry()
 */
 bool QSettings::writeEntry(const QString &key, double value)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::writeEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return FALSE;
     }
 
-    QString theKey = groupKey( group(), key );
-
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
-        return d->sysWriteEntry( theKey, value );
+        return d->sysWriteEntry( groupKey( group(), key ), value );
 #endif
     QString s(QString::number(value));
-    return writeEntry(theKey, s);
+    return writeEntry(key, s);
 }
 
 
 /*!
     \overload
     Writes the integer entry \a value into key \a key. The \a key is
@@ -1288,27 +1346,25 @@ bool QSettings::writeEntry(const QString &key, double value)
     returned; otherwise TRUE is returned.
 
   \sa readListEntry(), readNumEntry(), readDoubleEntry(), readBoolEntry(), removeEntry()
 */
 bool QSettings::writeEntry(const QString &key, int value)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::writeEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return FALSE;
     }
 
-    QString theKey = groupKey( group(), key );
-
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
-        return d->sysWriteEntry( theKey, value );
+        return d->sysWriteEntry( groupKey( group(), key ), value );
 #endif
     QString s(QString::number(value));
-    return writeEntry(theKey, s);
+    return writeEntry(key, s);
 }
 
 
 /*!
     \internal
 
@@ -1324,22 +1380,20 @@ bool QSettings::writeEntry(const QString &key, int value)
   unchanged.
 
   \sa readEntry(), removeEntry()
 */
 bool QSettings::writeEntry(const QString &key, const char *value)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::writeEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return FALSE;
     }
 
-    QString theKey = groupKey( group(), key );
-
-    return writeEntry(theKey, QString(value));
+    return writeEntry(key, QString(value));
 }
 
 
 /*!
     \overload
     Writes the string entry \a value into key \a key. The \a key is
@@ -1351,22 +1405,22 @@ bool QSettings::writeEntry(const QString &key, const char *value)
     returned; otherwise TRUE is returned.
 
   \sa readListEntry(), readNumEntry(), readDoubleEntry(), readBoolEntry(), removeEntry()
 */
 bool QSettings::writeEntry(const QString &key, const QString &value)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::writeEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return FALSE;
     }
 
     QString theKey = groupKey( group(), key );
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return d->sysWriteEntry( theKey, value );
 #endif
     // NOTE: we *do* allow value to be a null/empty string
 
     QString realkey;
@@ -1412,22 +1466,22 @@ bool QSettings::writeEntry(const QString &key, const QString &value)
     Returns TRUE if the entry existed and was removed; otherwise returns FALSE.
 
   \sa readEntry(), writeEntry()
 */
 bool QSettings::removeEntry(const QString &key)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::removeEntry: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return FALSE;
     }
 
     QString theKey = groupKey( group(), key );
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return d->sysRemoveEntry( theKey );
 #endif
 
     QString realkey;
 
@@ -1491,22 +1545,22 @@ bool QSettings::removeEntry(const QString &key)
     "/MyCompany/MyApplication/geometry/y".
 
   \sa subkeyList()
 */
 QStringList QSettings::entryList(const QString &key) const
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::entryList: Invalid key: %s", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return QStringList();
     }
 
     QString theKey = groupKey( group(), key );
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return d->sysEntryList( theKey );
 #endif
 
     QString realkey;
     if (theKey[0] == '/') {
@@ -1541,13 +1595,13 @@ QStringList QSettings::entryList(const QString &key) const
     QSettingsGroup grp = d->readGroup();
     QSettingsGroup::Iterator it = grp.begin();
     QStringList ret;
     QString itkey;
     while (it != grp.end()) {
         itkey = it.key();
-        it++;
+        ++it;
 
         if ( realkey.length() > 0 ) {
             if ( itkey.left( realkey.length() ) != realkey )
                 continue;
             else
                 itkey.remove( 0, realkey.length() + 1 );
@@ -1588,39 +1642,42 @@ QStringList QSettings::entryList(const QString &key) const
     rather than subkeys use entryList().
 
   \sa entryList()
 */
 QStringList QSettings::subkeyList(const QString &key) const
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::subkeyList: Invalid key: %s", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return QStringList();
     }
 
     QString theKey = groupKey( group(), key );
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return d->sysSubkeyList( theKey );
 #endif
 
     QString realkey;
+    int subkeycount = 2;
     if (theKey[0] == '/') {
         // parse our key
         QStringList list(QStringList::split('/', theKey));
 
         if (list.count() < 1) {
 #ifdef QT_CHECK_STATE
             qWarning("QSettings::subkeyList: invalid key '%s'", theKey.latin1());
 #endif // QT_CHECK_STATE
 
             return QStringList();
         }
 
+        subkeycount = list.count();
+
         if (list.count() == 1) {
             d->heading = list[0];
             d->group = "General";
         } else {
             d->heading = list[0];
             d->group = list[1];
@@ -1629,22 +1686,34 @@ QStringList QSettings::subkeyList(const QString &key) const
             list.remove(list.at(1));
             // remove the heading from the list
             list.remove(list.at(0));
 
             realkey = list.join("/");
         }
+
     } else
         realkey = theKey;
 
+    QStringList ret;
+    if ( subkeycount == 1 ) {
+        QMap<QString,QSettingsHeading>::Iterator it = d->headings.begin();
+        while ( it != d->headings.end() ) {
+            if ( it.key() != "General" && ! ret.contains( it.key() ) )
+                ret << it.key();
+            ++it;
+        }
+
+        return ret;
+    }
+
     QSettingsGroup grp = d->readGroup();
     QSettingsGroup::Iterator it = grp.begin();
-    QStringList ret;
     QString itkey;
     while (it != grp.end()) {
         itkey = it.key();
-        it++;
+        ++it;
 
         if ( realkey.length() > 0 ) {
             if ( itkey.left( realkey.length() ) != realkey )
                 continue;
             else
                 itkey.remove( 0, realkey.length() + 1 );
@@ -1667,22 +1736,22 @@ QStringList QSettings::subkeyList(const QString &key) const
     \internal
 
   This function returns the time of last modification for \a key.
 */
 QDateTime QSettings::lastModficationTime(const QString &key)
 {
-    if ( !verifyKey( key ) ) {
+    if ( !qt_verify_key( key ) ) {
 #if defined(QT_CHECK_STATE)
         qWarning( "QSettings::lastModficationTime: Invalid key: '%s'", key.isNull() ? "(null)" : key.latin1() );
 #endif
         return QDateTime();
     }
 
     QString theKey = groupKey( group(), key );
 
-#if defined(Q_WS_WIN) || defined(Q_OS_MAC)
+#if !defined(QWS) && (defined(Q_WS_WIN) || defined(Q_OS_MAC))
     if ( d->sysd )
         return QDateTime();
 #endif
 
     if (theKey[0] == '/') {
         // parse our key
@@ -1712,15 +1781,23 @@ QDateTime QSettings::lastModficationTime(const QString &key)
 /*!
     \overload
 
     Writes the string list entry \a value into key \a key. The \a key
     is created if it doesn't exist. Any previous value is overwritten
     by \a value. The list is stored as a sequence of strings separated
-    by \a separator, so none of the strings in the list should contain
-    the separator. If the list is empty or null the key's value will
-    be an empty string.
+    by \a separator (using QStringList::join()), so none of the
+    strings in the list should contain the separator. If the list is
+    empty or null the key's value will be an empty string.
+
+    \warning The list should not contain empty or null strings, as
+    readListEntry() will use QStringList::split() to recreate the
+    list.  As the documentation states, QStringList::split() will omit
+    empty strings from the list.  Because of this, it is impossible to
+    retrieve identical list data that is stored with this function.
+    We recommend using the writeEntry() and readListEntry() overloads
+    that do not take a \a separator argument.
 
     If an error occurs the settings are left unchanged and FALSE is
     returned; otherwise returns TRUE.
 
     \sa readListEntry(), readNumEntry(), readDoubleEntry(), readBoolEntry(), removeEntry()
 */
@@ -1765,12 +1842,19 @@ bool QSettings::writeEntry(const QString &key, const QStringList &value)
 
     Reads the entry specified by \a key as a string. The \a separator
     is used to create a QStringList by calling QStringList::split(\a
     separator, entry). If \a ok is not 0: \a *ok is set to TRUE if the
     key was read, otherwise \a *ok is set to FALSE.
 
+    \warning As the documentation states, QStringList::split() will
+    omit empty strings from the list.  Because of this, it is
+    impossible to retrieve identical list data with this function.  We
+    recommend using the readListEntry() and writeEntry() overloads
+    that do not take a \a separator argument.
+
+
     Note that if you want to iterate over the list, you should iterate
     over a copy, e.g.
     \code
     QStringList list = mySettings.readListEntry( "size", " " );
     QStringList::Iterator it = list.begin();
     while( it != list.end() ) {
@@ -1844,25 +1928,32 @@ QStringList QSettings::readListEntry(const QString &key, bool *ok )
                 l.append(s);
         }
     }
     return l;
 }
 
+#ifdef Q_OS_MAC
+void qt_setSettingsBasePath(const QString &); //qsettings_mac.cpp
+#endif
+
 /*!
-  Insert platform-dependent paths from platform-independent information.
+    Insert platform-dependent paths from platform-independent information.
+
+    The \a domain should be an Internet domain name
+    controlled by the producer of the software, eg. Trolltech products
+    use "trolltech.com".
 
-  The \a domain should be an Internet domain name
-  controlled by the producer of the software, eg. Trolltech products
-  use "trolltech.com".
+    The \a product should be the official name of the product.
 
-  The \a product should be the official name of the product.
+    The \a scope should be
+    QSettings::User for user-specific settings, or
+    QSettings::Global for system-wide settings (generally
+    these will be read-only to many users).
 
-  The \a scope should be
-  QSettings::User for user-specific settings, or
-  QSettings::Global for system-wide settings (generally
-  these will be read-only to many users).
+    Not all information is relevant on all systems (e.g. scoping is
+    currently used only if QSettings accesses the Windows registry).
 */
 
 void QSettings::setPath( const QString &domain, const QString &product, Scope scope )
 {
 //    On Windows, any trailing ".com(\..*)" is stripped from the domain. The
 //    Global scope corresponds to HKEY_LOCAL_MACHINE, and User corresponds to
@@ -1870,51 +1961,65 @@ void QSettings::setPath( const QString &domain, const QString &product, Scope sc
 //    write to the Global scope. On UNIX, any trailing ".com(\..*)" is stripped
 //    from the domain. The Global scope corresponds to "/opt" (this would be
 //    configurable at library build time - eg. to "/usr/local" or "/usr"),
 //    while the User scope corresponds to $HOME/.*rc.
 //    Note that on most installations, not all users can write to the System
 //    scope.
-//    
+//
 //    On MacOS X, if there is no "." in domain, append ".com", then reverse the
 //    order of the elements (Mac OS uses "com.apple.finder" as domain+product).
 //    The Global scope corresponds to /Library/Preferences/*.plist, while the
 //    User scope corresponds to ~/Library/Preferences/*.plist.
 //    Note that on most installations, not all users can write to the System
 //    scope.
+    d->globalScope = scope == Global;
+
     QString actualSearchPath;
     int lastDot = domain.findRev( '.' );
 
 #if defined(Q_WS_WIN)
     actualSearchPath = "/" + domain.mid( 0, lastDot ) + "/" + product;
     insertSearchPath( Windows, actualSearchPath );
-#elif defined(Q_WS_MAC)
+#elif !defined(QWS) && defined(Q_OS_MAC)
     QString topLevelDomain = domain.right( domain.length() - lastDot - 1 ) + ".";
-    if ( topLevelDomain.isEmpty() )
-        topLevelDomain = "com.";
-    actualSearchPath = "/" + topLevelDomain + domain.left( lastDot ) + product;
+    if ( !topLevelDomain.isEmpty() )
+        qt_setSettingsBasePath( topLevelDomain );
+    actualSearchPath = "/" + domain.left( lastDot ) + product;
     insertSearchPath( Mac, actualSearchPath );
 #else
     actualSearchPath = "/" + domain.mid( 0, lastDot ) + "/" + product;
     insertSearchPath( Unix, actualSearchPath );
 #endif
-
-    d->globalScope = scope == Global;
 }
 
 /*!
     Appends \a group to the current key prefix.
+
+    \code
+    QSettings settings;
+    settings.beginGroup( "/MainWindow" );
+    // read values
+    settings.endGroup();
+    \endcode
 */
 void QSettings::beginGroup( const QString &group )
 {
     d->groupStack.push( group );
     d->groupDirty = TRUE;
 }
 
 /*!
     Undo previous calls to beginGroup(). Note that a single beginGroup("a/b/c") is undone
     by a single call to endGroup().
+
+    \code
+    QSettings settings;
+    settings.beginGroup( "/MainWindow/Geometry" );
+    // read values
+    settings.endGroup();
+    \endcode
 */
 void QSettings::endGroup()
 {
     d->groupStack.pop();
     d->groupDirty = TRUE;
 }
@@ -1942,13 +2047,13 @@ QString QSettings::group() const
 
         QValueStack<QString>::Iterator it = d->groupStack.begin();
         while ( it != d->groupStack.end() ) {
             QString group = *it;
             ++it;
             if ( group[0] != '/' )
-                group = "/" + group;
+                group.prepend( "/" );
             d->groupPrefix += group;
         }
     }
     return d->groupPrefix;
 }