This will allow client code to provide more meaningful diagnostics. In
particular it will enable "notmuch new" to continue suggsting the user
run "notmuch setup" to create a config after "notmuch new" is
transitioned to the new configuration framework.
By using an enum we can have better error detection than copy pasting
key strings around.
The question of what layer this belongs in is a bit
tricky. Historically most of the keys are defined by the CLI. On the
other hand features like excludes are supported in the
library/bindings, and it makes sense to configure them from the
library as well.
The somewhat long prefix for notmuch_config_t is to avoid collisions
with the existing usage in notmuch-client.h.
Fill in the remainder of the documented functionality for
n_d_open_with_config with respect to config file location. Similar
searching default locations of the database file still needs to be
added.
The main goal is to allow configuration information to be temporarily
overridden by a separate config file. That will require further
changes not in this commit.
The performance impact is unclear, and will depend on the balance
between number of queries and number of distinct metadata items read
on the first call to n_d_get_config.
database.cc is uncomfortably large, and some of the static data
structures do not need to be shared as much as they are.
This is a somewhat small piece to factor out, but it will turn out to
be helpful to further refactoring.
As diagnosed by Olivier Taïbi in
id:20201027100916.emry3k2wujod4xnl@galois.lan, if an exception is
thrown while the initialization is happening (e.g. if the function is
called on a closed database), then the destructor is (sometimes)
invoked on an uninitialized Xapian object.
Solve the problem by moving the setting of the destructor until after
the placement new successfully completes. It is conceivable this might
cause a memory leak, but that seems preferable to crashing, and in any
case, there seems to be nothing better to be done if the
initialization is failing things are in an undefined state by
definition.
Use `makefile-gmake-mode' instead of `makefile-mode' because the
former also highlights ifdef et al. while the latter does not.
"./Makefile.global" and one "Makefile.local" failed to specify any
major mode at all but doing so is necessary because Emacs does not
automatically figure out that these are Makefiles (of any flavor).
static_cast is a bit tricky to understand and error prone, so add a
second pointer to (potentially the same) Xapian database object that
we know has the right subclass.
I'm not sure what the point of modifying that right before destroying
the object is. In a future commit I want to remove that element of the
object, so simplify that task.
The API docs promise to handle relative filenames, but the code did
not do it.
Also check for files outside the mail root, as implied by the API
description.
This fixes the bug reported at
id:87sgdqo0rz.fsf@tethera.net
In order to mimic the "best effort" API of Xapian to provide
information from a closed database when possible, do not
destroy the Xapian database object too early.
Because the pointer to a Xapian database is no longer nulled on close,
introduce a flag to track whether the notmuch database is open or not.
The original generic handler had an extra '%s' in the format
string. Update tests that failed to catch this because the template to
print status strings checked 'stat', which was not set.
As a side effect, we revert the switch from notmuch_bool_t to bool
here. This is because those two types are not actually compatible when
passing by reference.
It's not very nice to return FALSE for an error, so provide
notmuch_message_get_flag_st as a migration path.
Bump LIBNOTMUCH_MINOR_VERSION because the API is extended.
Currently I don't know of a good way of testing this, but at least in
principle a Xapian exception in _notmuch_message_{add,remove}_term
would cause an abort in the library.
