Merge commit 'qt/master'

7 files changed, 172 insertions, 121 deletions

diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index 21d98b5..2313e0e 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -379,6 +379,107 @@ void QHashData::checkSanity()
 #endif
 
 /*!
+    \fn uint qHash(const QPair<T1, T2> &key)
+    \since 4.3
+    \relates QHash
+    
+    Returns the hash value for the \a key.
+
+    Types \c T1 and \c T2 must be supported by qHash().
+*/
+
+/*! \fn uint qHash(char key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(uchar key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(signed char key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(ushort key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(short key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(uint key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(int key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(ulong key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(long key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(quint64 key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(qint64 key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(QChar key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(const QByteArray &key)
+    \fn uint qHash(const QBitArray &key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(const QString &key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*! \fn uint qHash(const T *key)
+    \relates QHash
+
+    Returns the hash value for the \a key.
+*/
+
+/*!
     \class QHash
     \brief The QHash class is a template class that provides a hash-table-based dictionary.
 
@@ -401,7 +502,8 @@ void QHashData::checkSanity()
        key. With QHash, the items are arbitrarily ordered.
     \i The key type of a QMap must provide operator<(). The key
        type of a QHash must provide operator==() and a global
-       \l{qHash()}{qHash}(Key) function.
+       hash function called qHash() (see the related non-member
+       functions).
     \endlist
 
     Here's an example QHash with QString keys and \c int values:
@@ -732,7 +834,6 @@ void QHashData::checkSanity()
 */
 
 /*! \fn const T QHash::value(const Key &key, const T &defaultValue) const
-
     \overload
 
     If the hash contains no item with the given \a key, the function returns
@@ -1490,121 +1591,6 @@ void QHashData::checkSanity()
     \sa operator+=(), operator-()
 */
 
-/*! \fn uint qHash(char key)
-    \relates QHash
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(uchar key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(signed char key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(ushort key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(short key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(uint key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(int key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(ulong key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(long key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(quint64 key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(qint64 key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(QChar key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(const QByteArray &key)
-    \fn uint qHash(const QBitArray &key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(const QString &key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*! \fn uint qHash(const T *key)
-    \relates QHash
-    \overload
-
-    Returns the hash value for the \a key.
-*/
-
-/*!
-    \fn uint qHash(const QPair<T1, T2> &key)
-    \relates QHash
-    \since 4.3
-
-    Returns the hash value for the \a key.
-
-    Types \c T1 and \c T2 must be supported by qHash().
-*/
-
 /*! \fn QDataStream &operator<<(QDataStream &out, const QHash<Key, T>& hash)
     \relates QHash
 
diff --git a/src/corelib/tools/qlistdata.cpp b/src/corelib/tools/qlistdata.cpp
index d7c39a7..d40b6b6 100644
--- a/src/corelib/tools/qlistdata.cpp
+++ b/src/corelib/tools/qlistdata.cpp
@@ -764,6 +764,10 @@ void **QListData::erase(void **xi)
     This function requires the value type to have an implementation of
     \c operator==().
 
+    Note that QList uses 0-based indexes, just like C++ arrays. Negative
+    indexes are not supported with the exception of the value mentioned
+    above.
+
     \sa lastIndexOf(), contains()
 */
 
@@ -780,6 +784,10 @@ void **QListData::erase(void **xi)
     This function requires the value type to have an implementation of
     \c operator==().
 
+    Note that QList uses 0-based indexes, just like C++ arrays. Negative 
+    indexes are not supported with the exception of the value mentioned
+    above.
+
     \sa indexOf()
 */
 
diff --git a/src/corelib/tools/qlocale.cpp b/src/corelib/tools/qlocale.cpp
index 559ba81..a2154a9 100644
--- a/src/corelib/tools/qlocale.cpp
+++ b/src/corelib/tools/qlocale.cpp
@@ -5367,6 +5367,14 @@ static Bigint *mult(Bigint *a, Bigint *b)
 
 static Bigint *p5s;
 
+struct p5s_deleter
+{
+    ~p5s_deleter()
+    {
+        Bfree(p5s);
+    }
+};
+
 static Bigint *pow5mult(Bigint *b, int k)
 {
     Bigint *b1, *p5, *p51;
@@ -5388,6 +5396,7 @@ static Bigint *pow5mult(Bigint *b, int k)
         return b;
     if (!(p5 = p5s)) {
         /* first time */
+        static p5s_deleter deleter;
         p5 = p5s = i2b(625);
         p5->next = 0;
     }
diff --git a/src/corelib/tools/qringbuffer_p.h b/src/corelib/tools/qringbuffer_p.h
index 3a0901d..02cc497 100644
--- a/src/corelib/tools/qringbuffer_p.h
+++ b/src/corelib/tools/qringbuffer_p.h
@@ -58,7 +58,7 @@
 
 QT_BEGIN_NAMESPACE
 
-class Q_CORE_EXPORT QRingBuffer
+class QRingBuffer
 {
 public:
     inline QRingBuffer(int growth = 4096) : basicBlockSize(growth) {
@@ -74,6 +74,52 @@ public:
         return buffers.isEmpty() ? 0 : (buffers.first().constData() + head);
     }
 
+    // access the bytes at a specified position
+    // the out-variable length will contain the amount of bytes readable
+    // from there, e.g. the amount still the same QByteArray
+    inline const char *readPointerAtPosition(qint64 pos, qint64 &length) const {
+        if (buffers.isEmpty()) {
+            length = 0;
+            return 0;
+        }
+
+        if (pos >= bufferSize) {
+            length = 0;
+            return 0;
+        }
+
+        // special case: it is in the first buffer
+        int nextDataBlockSizeValue = nextDataBlockSize();
+        if (pos - head < nextDataBlockSizeValue) {
+            length = nextDataBlockSizeValue - pos;
+            return buffers.at(0).constData() + head + pos;
+        }
+
+        // special case: we only had one buffer and tried to read over it
+        if (buffers.length() == 1) {
+            length = 0;
+            return 0;
+        }
+
+        // skip the first
+        pos -= nextDataBlockSizeValue;
+
+        // normal case: it is somewhere in the second to the-one-before-the-tailBuffer
+        for (int i = 1; i < tailBuffer; i++) {
+            if (pos >= buffers[i].size()) {
+                pos -= buffers[i].size();
+                continue;
+            }
+
+            length = buffers[i].length() - pos;
+            return buffers[i].constData() + pos;
+        }
+
+        // it is in the tail buffer
+        length = tail - pos;
+        return buffers[tailBuffer].constData() + pos;
+    }
+
     inline void free(int bytes) {
         bufferSize -= bytes;
         if (bufferSize < 0)
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index 375d672..c3649e3 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -743,7 +743,9 @@ int QString::grow(int size)
 /*!
     \since 4.2
 
-    Returns a copy of the \a string string encoded in ucs4.
+    Returns a copy of the \a string, where the encoding of \a string depends on 
+    the size of wchar. If wchar is 4 bytes, the \a string is interpreted as ucs-4,
+    if wchar is 2 bytes it is interpreted as ucs-2.
 
     If \a size is -1 (default), the \a string has to be 0 terminated.
 
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index 1493dce..69c4f2f 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -113,7 +113,7 @@ public:
 
     int capacity() const;
     inline void reserve(int size);
-    inline void squeeze() { if (d->size < d->alloc) realloc(); d->capacity = 0;}
+    inline void squeeze() { if (d->size < d->alloc || d->ref != 1) realloc(); d->capacity = 0;}
 
     inline const QChar *unicode() const;
     inline QChar *data();
diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index 3fd52ee..1f047b8 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -315,7 +315,7 @@ void QVector<T>::detach_helper()
 { realloc(d->size, d->alloc); }
 template <typename T>
 void QVector<T>::reserve(int asize)
-{ if (asize > d->alloc) realloc(d->size, asize); d->capacity = 1; }
+{ if (asize > d->alloc || d->ref != 1) realloc(d->size, asize); d->capacity = 1; }
 template <typename T>
 void QVector<T>::resize(int asize)
 { realloc(asize, (asize > d->alloc || (!d->capacity && asize < d->size && asize < (d->alloc >> 1))) ?