Add QUuid::toByteArray() and relevant

Add QUuid::toByteArray() and QUuid(const QByteArray &). Same
behavior with QUuid::toString() and QUuid(const QString &).

Task-number: QTBUG-19419
Reviewed-by: joao
(cherry picked from commit 71f923f29e2c60444a85fc765fc582e06cb7eca4)

Change-Id: I41dad65e269f739ba9ec1c27e9da96af6401356c
Reviewed-on: http://codereview.qt.nokia.com/167
Reviewed-by: Liang Qi <liang.qi@nokia.com>

2 files changed, 81 insertions, 0 deletions

diff --git a/src/corelib/plugin/quuid.cpp b/src/corelib/plugin/quuid.cpp
index 796ee01602..facd732609 100644
--- a/src/corelib/plugin/quuid.cpp
+++ b/src/corelib/plugin/quuid.cpp
@@ -351,6 +351,39 @@ QUuid::QUuid(const char *text)
         return;
     }
 }
+
+/*!
+  Creates a QUuid object from the QByteArray \a text, which must be
+  formatted as five hex fields separated by '-', e.g.,
+  "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}" where 'x' is a hex
+  digit. The curly braces shown here are optional, but it is normal to
+  include them. If the conversion fails, a null UUID is created.  See
+  toByteArray() for an explanation of how the five hex fields map to the
+  public data members in QUuid.
+
+    \since 4.8
+
+    \sa toByteArray(), QUuid()
+*/
+QUuid::QUuid(const QByteArray &text)
+{
+    if (text.length() < 36) {
+        *this = QUuid();
+        return;
+    }
+
+    const char *data = text.constData();
+
+    if (*data == '{' && text.length() < 37) {
+        *this = QUuid();
+        return;
+    }
+
+    if (!_q_uuidFromHex(data, data1, data2, data3, data4)) {
+        *this = QUuid();
+        return;
+    }
+}
 #endif
 
 /*!
@@ -418,6 +451,52 @@ QString QUuid::toString() const
 
     return result;
 }
+
+/*!
+    Returns the binary representation of this QUuid. The byte array is
+    formatted as five hex fields separated by '-' and enclosed in
+    curly braces, i.e., "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}" where
+    'x' is a hex digit.  From left to right, the five hex fields are
+    obtained from the four public data members in QUuid as follows:
+
+    \table
+    \header
+    \o Field #
+    \o Source
+
+    \row
+    \o 1
+    \o data1
+
+    \row
+    \o 2
+    \o data2
+
+    \row
+    \o 3
+    \o data3
+
+    \row
+    \o 4
+    \o data4[0] .. data4[1]
+
+    \row
+    \o 5
+    \o data4[2] .. data4[7]
+
+    \endtable
+
+    \since 4.8
+*/
+QByteArray QUuid::toByteArray() const
+{
+    QByteArray result(38, Qt::Uninitialized);
+    char *data = result.data();
+
+    _q_uuidToHex(data, data1, data2, data3, data4);
+
+    return result;
+}
 #endif
 
 #ifndef QT_NO_DATASTREAM
diff --git a/src/corelib/plugin/quuid.h b/src/corelib/plugin/quuid.h
index e9afacc560..69c4044e3c 100644
--- a/src/corelib/plugin/quuid.h
+++ b/src/corelib/plugin/quuid.h
@@ -109,6 +109,8 @@ struct Q_CORE_EXPORT QUuid
     QUuid(const char *);
     QString toString() const;
     operator QString() const { return toString(); } // ### Qt5 remove
+    QUuid(const QByteArray &);
+    QByteArray toByteArray() const;
 #endif
     bool isNull() const;