Added BArchive::clearCache() method for clearing the data cache of opened files.

svn-id: r42019

2 files changed, 14 insertions, 0 deletions

diff --git a/engines/draci/barchive.cpp b/engines/draci/barchive.cpp
index 4b9a1d9807..c6d6354716 100644
--- a/engines/draci/barchive.cpp
+++ b/engines/draci/barchive.cpp
@@ -377,6 +377,18 @@ BAFile *BArchive::loadFileDFW(unsigned int i) const {
 
 	return _files + i;
 }
+
+/**
+ * Clears the cache of the open files inside the archive without closing it.
+ * If the files are subsequently accessed, they are read from the disk.
+ */
+void BArchive::clearCache() {
+
+	// Delete all cached data
+	for (unsigned int i = 0; i < _fileCount; ++i) {
+		_files[i].closeFile();
+	}
+}
 	
 
 BAFile *BArchive::operator[](unsigned int i) const {
diff --git a/engines/draci/barchive.h b/engines/draci/barchive.h
index e52e41e737..28c34fbcbb 100644
--- a/engines/draci/barchive.h
+++ b/engines/draci/barchive.h
@@ -70,6 +70,8 @@ public:
 	 */	
 	bool isOpen() const { return _opened; }
 
+	void clearCache();
+
 	BAFile *operator[](unsigned int i) const;
 
 private: