CLOUD: Make download() create necessary directories

DumpFile::open() with createPath=true create would create the missing
directories from the path before opening a file. Thus, one can easily
create a file and avoid "can't open a file" error.

2 files changed, 17 insertions, 3 deletions

diff --git a/common/file.cpp b/common/file.cpp
index 4d9c630076..52b66bd2f4 100644
--- a/common/file.cpp
+++ b/common/file.cpp
@@ -25,6 +25,8 @@
 #include "common/file.h"
 #include "common/fs.h"
 #include "common/textconsole.h"
+#include "common/system.h"
+#include "backends/fs/fs-factory.h"
 
 namespace Common {
 
@@ -149,11 +151,23 @@ DumpFile::~DumpFile() {
 	close();
 }
 
-bool DumpFile::open(const String &filename) {
+bool DumpFile::open(const String &filename, bool createPath) {
 	assert(!filename.empty());
 	assert(!_handle);
 
-	FSNode node(filename);
+	if (createPath) {
+		for (uint32 i = 0; i < filename.size(); ++i) {
+			if (filename[i] == '/' || filename[i] == '\\') {
+				Common::String subpath = filename;
+				subpath.erase(i);
+				AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(subpath);				
+				if (node->exists()) continue;				
+				if (!node->create(true)) warning("DumpFile: unable to create directories from path prefix");
+			}
+		}
+	}
+
+	FSNode node(filename);	
 	return open(node);
 }
 
diff --git a/common/file.h b/common/file.h
index 3d174834e9..8ad6249d6d 100644
--- a/common/file.h
+++ b/common/file.h
@@ -143,7 +143,7 @@ public:
 	DumpFile();
 	virtual ~DumpFile();
 
-	virtual bool open(const String &filename);
+	virtual bool open(const String &filename, bool createPath = false);
 	virtual bool open(const FSNode &node);
 
 	virtual void close();