FDO 19.08 runtime now includes C.UTF-8 locale, but since Fedora
now ships one that collates high-bit chars, it differs compared
to Debian et al's and FDO.
As a result, just use en_US.UTF-8 for now, probably until glibc
actually ships it and so they all agree.
Geary.ImapDb.Database/utf8_case_insensitive_collation depends on a well
known UTF-8 collation order, but distros only ship C.UTF-8 by default
and Flatpak doesn't ship that, so support en_US.UTF-8 as a fallback.
See https://gitlab.com/freedesktop-sdk/freedesktop-sdk/issues/812
Remove contact harvesting from DB version 005 (version 0.1.1), allowing
the implementation of both ContactStoreImpl and ImapDB.Database to be
cleaned up. Remove contact collection from ImapDB.Folder, reducing the
numer of Gee objects created when creating/merging messages. Finally,
remove the MessageAddresses object now that it is unused.
This stops generating account storage paths, and in particular the
location of attachment files, in a number of different places. Instead,
we determine the paths once, in ImapDb.Account and pass them around as
needed. This will help making the ImapDB classes unit-testable, and
in particular ImapDb.Folder by passing an instance of Db.Database,
rather than ImapDb.Database.
This makes both the open() and open_connection() methods on
Geary.DB.Database asynchronous, which allows the VersionedDatabase
open_background() and its hackery to be removed, and upgrades to be
performed asynchronously as well. It also adds a
exec_transaction_async() method to Connection, allowing an existing
object to also be used to establish an async transaction.
* src/engine/db/db-connection.vala (Connection): Add
exec_transaction_async method, update doc comments.
* src/engine/db/db-database.vala (Database): Make open and
open_connection async by executing SQLite code in a background thread,
update call sites. Move job management code out of
exec_transaction_async into a new internal add_async_job() method so it
can be used by Connection. Add unit tests.
* src/engine/db/db-transaction-async-job.vala (TransactionAsyncJob): Add
an optional internal connection method and make the job's cancellable
an internal property so a Connection instance can specify itself for
the transaction.
* src/engine/db/db-versioned-database.vala (VersionedDatabase): Remove
open_background() hack since open() is now async. Make version upgrade
hooks for derived classes async and update call sites. Use a
Nonblocking.Mutex rather than GLib mutex so upgrade exclusion works
asynchronously. Add unit tests.
* src/engine/imap-db/imap-db-database.vala (Database): Make database
upgrade methods async and execute SQL in async instructions now that
the bases classes support it. Add unit tests.
