After implementing the BMimeType::GetInstalled[Super]Types()

functionality, it became apparent that some restructuring was
needed if I wanted to keep things clean and managble.
storage/MimeDatabase.{h,cpp} have been broken into:

storage/mime/database_support.{h,cpp}
+ MIME database constants
+ high-level database access functions like open_type(),
  read_mime_attr(), etc.

storage/mime/database_access.{h,cpp}
+ atomic read functions
+ is_installed()
+ get_icon_data()

storage/mime/Database.{h,cpp}
+ Mime::Database class, which is responsible for all write,
  non-atomic read, and mime monitor functionality.

storage/mime/InstalledTypes.{h,cpp}
+ Helper class for Mime::Database::GetInstalled[Super]Types()

storage/mime/Supertype.{h,cpp}
+ Helper class for Mime::InstalledTypes

I haven't merged my intial, somewhat cludgy GetInstalled[Super]Types
implementation into the new setup yet. That comes next, and it ought
to be a more graceful implementation now.

I also implemented BMimeType::Get/SetSupportingTypes(), though
they haven't been tested yet (sorry).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@862 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/mime/database_access.h

@@ -0,0 +1,39 @@
+// mime/database_access.h
+
+#ifndef _MIME_DATABASE_ACCESS_H
+#define _MIME_DATABASE_ACCESS_H
+
+#include <Mime.h>
+
+class BNode;
+class BBitmap;
+class BMessage;
+
+namespace BPrivate {
+namespace Storage {
+namespace Mime {
+
+// Get() functions
+status_t get_app_hint(const char *type, entry_ref *ref);
+status_t get_attr_info(const char *type, BMessage *info);
+status_t get_short_description(const char *type, char *description);
+status_t get_long_description(const char *type, char *description);
+status_t get_file_extensions(const char *type, BMessage *extensions);
+status_t get_icon(const char *type, BBitmap *icon, icon_size size);
+status_t get_icon_for_type(const char *type, const char *fileType, BBitmap *icon,
+			icon_size which);
+status_t get_preferred_app(const char *type, char *signature, app_verb verb);
+status_t get_sniffer_rule(BString *result);
+status_t get_supported_types(const char *type, BMessage *types);
+
+bool is_installed(const char *type);
+
+// Called by BMimeType to get properly formatted icon data ready
+// to be shipped off to SetIcon*() and written to the database
+status_t get_icon_data(const BBitmap *icon, icon_size size, void **data, int32 *dataSize);
+
+} // namespace Mime
+} // namespace Storage
+} // namespace BPrivate
+
+#endif	// _MIME_DATABASE_H