* Implemented a class that can handle Tracker's query files. Only read support

for now. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38767 a95241bf-73f2-0310-859d-f6bbb57e9c96
2010-09-21 20:42:13 +00:00
parent 14bf35a2ef
commit 24b218c5a7
3 changed files with 425 additions and 0 deletions
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2010, Axel Dörfler, [email protected].
+ * This file may be used under the terms of the MIT License.
+ */
+#ifndef _QUERY_FILE_H
+#define _QUERY_FILE_H
+
+
+#include <EntryList.h>
+#include <Query.h>
+#include <List.h>
+#include <String.h>
+
+
+class BQueryFile : public BEntryList {
+public:
+								BQueryFile(const entry_ref& ref);
+								BQueryFile(const BEntry& entry);
+								BQueryFile(const char* path);
+								BQueryFile(BQuery& query);
+	virtual						~BQueryFile();
+
+			status_t			InitCheck() const;
+
+			status_t			SetTo(const entry_ref& ref);
+			status_t			SetTo(const BEntry& entry);
+			status_t			SetTo(const char* path);
+			status_t			SetTo(BQuery& query);
+			void				Unset();
+
+			status_t			SetPredicate(const char* predicate);
+			status_t			AddVolume(const BVolume& volume);
+			status_t			AddVolume(dev_t device);
+
+			const char*			Predicate() const;
+			int32				CountVolumes() const;
+			dev_t				VolumeAt(int32 index) const;
+
+			status_t			WriteTo(const entry_ref& ref);
+			status_t			WriteTo(const char* path);
+
+			// BEntryList implementation
+
+	virtual	status_t			GetNextEntry(BEntry* entry,
+									bool traverse = false);
+	virtual	status_t			GetNextRef(entry_ref* ref);
+	virtual	int32				GetNextDirents(struct dirent* buffer,
+									size_t length, int32 count = INT_MAX);
+	virtual	status_t			Rewind();
+	virtual	int32				CountEntries();
+
+	static	const char*			MimeType();
+
+private:
+			status_t			_SetQuery(int32 index);
+
+private:
+			status_t			fStatus;
+			BString				fPredicate;
+			BQuery				fQuery;
+			BList				fVolumes;
+			int32				fCurrentVolumeIndex;
+};
+
+
+#endif	// _QUERY_FILE_H