Refactor MIME DB access

* Add class DatabaseLocation. It contains a list of the MIME DB
directory paths plus methods to access type files.
* Move all low-level MIME DB access functions from
database_{support,access} to DatabaseLocation. All code that formerly
used those now requires a DatabaseLocation object. In BMimeType and in
the registrar the default object is used, but the low-level classes
can now be reused with different locations.
* Move get_icon_data() from database_access to database_support and
delete the former, which is now empty.

Move MIME DB code back from registrar to src/kits/storage/mime

* Together with database_{access,support}.cpp it is built into a static
library.
* Add new interfaces MimeSniffer and Database::NotificationListener for
plugging in registrar specific functionality (the sniffer add-on
support and the notification mechanism).

bonefish+mmlr:
* Move most of MIME database support out of libbe and into registrar
* Use the (async) MessageDeliverer instead of a synchronous SendMessage in _SendMonitorUpdate

This fixes a deadlock when the message port of a MIME database watching
application gets full as documented in bug #1311.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23423 a95241bf-73f2-0310-859d-f6bbb57e9c96

* InstalledTypes did not preserve the case of the MIME types, and thus, Tracker queries
for some types (like "application/x-vnd.Be-elfexecutable") would fail. This fixes
bug #666 (no, I'm not the exorcist :-)).
* Renamed private methods to have the '_' prefix.
* Cleanup, added license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17832 a95241bf-73f2-0310-859d-f6bbb57e9c96

+ Added GetInstalled[Super]Types functionality
+ Cleaned up warnings
+ Added documentation


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@899 a95241bf-73f2-0310-859d-f6bbb57e9c96

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

Refactor MIME DB access

* Add class DatabaseLocation. It contains a list of the MIME DB
directory paths plus methods to access type files.
* Move all low-level MIME DB access functions from
database_{support,access} to DatabaseLocation. All code that formerly
used those now requires a DatabaseLocation object. In BMimeType and in
the registrar the default object is used, but the low-level classes
can now be reused with different locations.
* Move get_icon_data() from database_access to database_support and
delete the former, which is now empty.

Move MIME DB code back from registrar to src/kits/storage/mime

* Together with database_{access,support}.cpp it is built into a static
library.
* Add new interfaces MimeSniffer and Database::NotificationListener for
plugging in registrar specific functionality (the sniffer add-on
support and the notification mechanism).

bonefish+mmlr:
* Move most of MIME database support out of libbe and into registrar
* Use the (async) MessageDeliverer instead of a synchronous SendMessage in _SendMonitorUpdate

This fixes a deadlock when the message port of a MIME database watching
application gets full as documented in bug #1311.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23423 a95241bf-73f2-0310-859d-f6bbb57e9c96

* InstalledTypes did not preserve the case of the MIME types, and thus, Tracker queries
for some types (like "application/x-vnd.Be-elfexecutable") would fail. This fixes
bug #666 (no, I'm not the exorcist :-)).
* Renamed private methods to have the '_' prefix.
* Cleanup, added license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17832 a95241bf-73f2-0310-859d-f6bbb57e9c96

+ Added GetInstalled[Super]Types functionality
+ Cleaned up warnings
+ Added documentation


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@899 a95241bf-73f2-0310-859d-f6bbb57e9c96

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