Add convenient function.

2 files changed, 11 insertions, 4 deletions

diff --git a/installerbuilder/common/fileutils.cpp b/installerbuilder/common/fileutils.cpp
index 60365abc6..0dd2f7772 100644
--- a/installerbuilder/common/fileutils.cpp
+++ b/installerbuilder/common/fileutils.cpp
@@ -129,6 +129,12 @@ QString QInstaller::pathFromUrl(const QUrl &url)
     return str;
 }
 
+void QInstaller::openForRead(QIODevice *dev, const QString &name)
+{
+    Q_ASSERT(dev);
+    if (!dev->open(QIODevice::ReadOnly))
+        throw Error(QObject::tr("Cannot open file %1 for reading: %2").arg(name, dev->errorString()));
+}
 
 void QInstaller::openForWrite(QIODevice *dev, const QString &name)
 {
@@ -137,11 +143,11 @@ void QInstaller::openForWrite(QIODevice *dev, const QString &name)
         throw Error(QObject::tr("Cannot open file %1 for writing: %2").arg(name, dev->errorString()));
 }
 
-void QInstaller::openForRead(QIODevice *dev, const QString &name)
+void QInstaller::openForAppend(QIODevice *dev, const QString &name)
 {
     Q_ASSERT(dev);
-    if (!dev->open(QIODevice::ReadOnly))
-        throw Error(QObject::tr("Cannot open file %1 for reading: %2").arg(name, dev->errorString()));
+    if (!dev->open(QIODevice::ReadWrite | QIODevice::Append))
+        throw Error(QObject::tr("Cannot open file %1 for writing: %2").arg(name, dev->errorString()));
 }
 
 qint64 QInstaller::blockingWrite(QIODevice *out, const char *buffer, qint64 size)
diff --git a/installerbuilder/common/fileutils.h b/installerbuilder/common/fileutils.h
index 8be14f08f..4c28d9d09 100644
--- a/installerbuilder/common/fileutils.h
+++ b/installerbuilder/common/fileutils.h
@@ -61,8 +61,9 @@ private:
     QSet<QString> m_paths;
 };
 
-    void INSTALLER_EXPORT openForWrite(QIODevice *dev, const QString &name);
     void INSTALLER_EXPORT openForRead(QIODevice *dev, const QString &name);
+    void INSTALLER_EXPORT openForWrite(QIODevice *dev, const QString &name);
+    void INSTALLER_EXPORT openForAppend(QIODevice *dev, const QString &name);
 
     qint64 INSTALLER_EXPORT blockingRead(QIODevice *in, char *buffer, qint64 size);
     void INSTALLER_EXPORT blockingCopy(QIODevice *in, QIODevice *out, qint64 size);