Carl Worth [Fri, 23 Oct 2009 22:48:05 +0000 (15:48 -0700)]
Add new "notmuch new" command.
Finally, I can get new messages into my notmuch database without
having to run a complete "notmuch setup" again. This takes
advantage of the recent timestamp capabilities in the database
to avoid looking into directories that haven't changed since the
last time "notmuch new" was run.
Carl Worth [Fri, 23 Oct 2009 22:22:14 +0000 (15:22 -0700)]
notmuch setup: Clean up the progress printing a bit.
Get rid of a useless leading 0 on the seconds value, and make a
distinction between "files" and "messages", (we process many
files, but not all of them are recongized as messages). Finally,
add a summary line at the end saying how many unique messages
were added to the database. Since this comes right after the
total number of files, it gives the user at least a hint as
to how many messages were encountered with duplicate message IDs.
Carl Worth [Fri, 23 Oct 2009 22:17:16 +0000 (15:17 -0700)]
Re-order documentation a bit.
The notmuch_database_get_default_path function is unique in not
accepting a notmuch_database_t* (nor creating one). So list it
outside the other notmuch_database functions.
Carl Worth [Fri, 23 Oct 2009 21:55:50 +0000 (14:55 -0700)]
Remove some unneeded initializers.
Some people might argue for more initializers to be "safer",
but I actually prefer to leave things this way. It saves
typing, but the real benefit is that the things that do
require initialization stand out so we know to watch them
carefully. And with valgrind, we actually get to catch
errors earlier if we *don't* initialize them. So that can
be "safer" ironically enough.
Carl Worth [Fri, 23 Oct 2009 21:40:33 +0000 (14:40 -0700)]
Add NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID
And document that notmuch_database_add_message can return this
value. This pushes the hard decision of what to do with duplicate
messages out to the user, but that's OK. (We weren't really doing
anything with these ourselves, and this way the user is at least
informed of the issue, rather than it just getting papered over
internally.)
Carl Worth [Fri, 23 Oct 2009 21:37:09 +0000 (14:37 -0700)]
Clean up comments to not include spaces before tabs.
This were just unclean, (an invisble sort of uncleanliness, but still
there are liable to make for ugly diffs). Oh, wait, like this one!
But at least it's not sprinkled among code changes.
Carl Worth [Fri, 23 Oct 2009 21:12:06 +0000 (14:12 -0700)]
database: Similarly rename find_message_by_docid to find_document_for_doc_id
Again preferring notmuch_database_t* over Xapian::Database*.
Also, we're standardizing on "doc_id" rather than "docid" locally, (as
an analoge to "message_id"), in spite of the "Xapian::docid" name,
(which, fortunately, we can ignore and just us "unsigned int" instead).
Carl Worth [Fri, 23 Oct 2009 21:06:24 +0000 (14:06 -0700)]
database: Rename internal find_messages_by_term to find_doc_ids
This name is a more accurate description of what it does, and
the more general naming will make sense as we start storing
non-message documents in the database (such as directory
timestamps).
Also, don't pass around a Xapian::Database where it's more our
style to pass a notmuch_database_t*.
Carl Worth [Fri, 23 Oct 2009 20:54:53 +0000 (13:54 -0700)]
sha1: Add new notmuch_sha1_of_string function
We'll be using this for storing really long terms in the database
and when we just need to look them up, (and never read back the
original data directly from the database). For example, storing
arbitrarily long directory paths in the database along with
mtime timestamps.
Note that if we did want to store arbitrarily long terms and also
be able to read them back, the Xapian folks recommending splitting
the term off with multiple prefixes. See the note near the end
of this page:
Carl Worth [Fri, 23 Oct 2009 13:08:22 +0000 (06:08 -0700)]
notmuch restore: Print names of tags that cannot be applied
This helps the user gauge the severity of the error.
For example, when restoring my sup tags I see a bunch of tags missing
for message IDs of the form "sup-faked-...". That's not surprising
since I know that sup generates these with the md5sum of the message
header while notmuch uses the sha-1 of the entire message. But how
much will this hurt?
Well, now that I can see that most of the missing tags are just
"attachment", then I'm not concerned, (I'll be automatically creating
that tag in the future based on the message contents). But if a
missing tag is "inbox" then that's more concerning because that's data
that I can't easily regenerate outside of sup.
Carl Worth [Fri, 23 Oct 2009 13:04:57 +0000 (06:04 -0700)]
Fix notmuch_message_get_message_id to never return NULL.
With the recent improvements to the handling of message IDs we
"know" that a NULL message ID is impossible, (so we simply
abort if the impossible happens).
Carl Worth [Fri, 23 Oct 2009 13:00:10 +0000 (06:00 -0700)]
add_message: Fix to not add multiple documents with the same message ID
Here's the second big fix to message-ID handling, (the first was to
generate message IDs when an email contained none). Now, with no
document missing a message ID, and no two documents having the same
message ID, we have a nice consistent database where the message ID
can be used as a unique key.
Carl Worth [Fri, 23 Oct 2009 12:53:52 +0000 (05:53 -0700)]
Add _notmuch_message_create_for_message_id
This is the last piece needed for add_message to be able to properly
support a message with a duplicate message ID. This function creates
a new notmuch_message_t object but one that may reference an existing
document in the database.
Carl Worth [Fri, 23 Oct 2009 12:45:29 +0000 (05:45 -0700)]
Fix _notmuch_message_create to catch Xapian DocNotFoundError.
This function is only supposed to be called with a doc_id that
was queried from the database already. So there's an internal
error if no document with that doc_id can be found in the database.
Carl Worth [Fri, 23 Oct 2009 12:30:37 +0000 (05:30 -0700)]
add_message: Re-order the code a bit (find message-id first).
We're preparing for being able to deal with files with duplicate
message IDs here. The plan is to create a notmuch_message_t object in
add_message that may or may not reference a document that exists in
the database. So to do this, we have to find the message ID before we
do any manipulation of the doc.
Carl Worth [Fri, 23 Oct 2009 12:18:35 +0000 (05:18 -0700)]
Move the _notmuch_message_sync from private to public interfaces
The idea here is to allow internal users to see a non-synced message
object, (for example, while parsing a message file and incrementally
adding terms, etc.). We're willing to take the care to get the
improved performance.
But for the public interface, keeping everything synced will be much
less confusing, (reference lots of sup bugs that happen due to
message state being altered by the user but not synced to the database).
Carl Worth [Fri, 23 Oct 2009 12:13:42 +0000 (05:13 -0700)]
add_message: Rename message to message_file
I still don't like the name message_file at all, but we're about
to start using a notmuch_message_t in this function so we need
to do something to keep the identifiers separate for now.
Eventually, it probably makes sense to push the message-parsing
code from database.cc to message.cc.
Carl Worth [Thu, 22 Oct 2009 22:46:22 +0000 (15:46 -0700)]
Prevent that last bug from reoccurring.
It's even enough to check if a "missing" header was accidentally
left off the list in the call to restrict_headers. (And it's
cheap since we only check in case no such header was found in the
message.)
Carl Worth [Thu, 22 Oct 2009 22:34:47 +0000 (15:34 -0700)]
Don't forget the "to" header when restrict parsing to certain headers
We recently started discarding files as "not email" if they have none
of Subject, From, nor To. Apaprently, my mail collection contains a
number of messages that I sent, that are saved without Subject and
From, (perhaps these were drafts?).
Anyway, it's fortunate I had those since they alerted me to this bug,
where we were not parsing the "To" header in some cases.
Carl Worth [Thu, 22 Oct 2009 22:31:56 +0000 (15:31 -0700)]
Generate message ID (using SHA1) when a mail message contains none.
This is important as we're using the message ID as the unique key
in our database. So previously, all messages with no message ID
would be treated as the same message---not good at all.
Carl Worth [Thu, 22 Oct 2009 06:25:58 +0000 (23:25 -0700)]
Rename sha1.c to libsha1.c
This way both the .c and .h files have the same name, and all of the
code imported from the "libsha1" implementation is in filenames
matching libsha1.*.
This also gives me room to make my own notmuch_sha1 wrapper functions
in sha1.c.
Carl Worth [Thu, 22 Oct 2009 06:23:32 +0000 (23:23 -0700)]
Merge branch from fixing up bugs after bisecting.
I'm glad that when I implemented "notmuch restore" I went through the
extra effort to take the code I had written in one sitting into over a
dozen commits. Sure enough, I hadn't tested well enough and had
totally broken "notmuch setup", (segfaults and bogus thread_id
values).
With the little commits I had made, git bisect saved the day, and I
went back to make the fixes right on top of the commits that
introduced the bugs. So now we octopus merge those in.
Carl Worth [Thu, 22 Oct 2009 06:10:19 +0000 (23:10 -0700)]
Bring back the insert_thread_id function.
We deleted this in favor of our fancy new thread_ids iterator
from the message object. But one of the previous callers of
insert_thread_id isn't using notmuch_message_t yet. I made
the mistake of thinking I could just call g_hash_table_insert
directly, but the problem was that nobody was splitting
up the thread_id string at its commas.
So with this, we were inserting bogus comma-separated IDs
into the hash table, so thread_id values were ballooning
out of control. Should be much better now.
Carl Worth [Thu, 22 Oct 2009 06:01:17 +0000 (23:01 -0700)]
Fix lifetime-maintenance bug with std::string and c_str()
Here's more evidence that C++ is a nightmare to program---or that
I'm smart enough to realize that C++ is more clever than I will
ever be.
Most of my issues with C++ have to do with it hiding things from
me that I'd really like to and expect to be aware of as a C
programmer.
For example, the specific problem here is that there's a
short-lived std::string, from which I just want to copy
the C string. I try to do that on the next line, but before
I can, C++ has already called the destructor on the std::string.
Now, C++ isn't alone in doing garbage collecting like this.
But in a *real* garbage-collecting system, everything would
work that way. For example, here, I'm still holding a pointer
to the C string contents, so if the garbage collector were
aware of that reference, then it might clean up the std::string
container and leave the data I'm still using.
But that's not what we get with C++. Instead, some things are
reference counted and collected, (like the std::string), and
some things just aren't (like the C string it contains). The
end result is that it's very fragile. It forces me to be aware
of the timing of hidden functions. In a "real" system I wouldn't
have to be aware of that timing, and in C the function just
wouldn't be hidden.
Carl Worth [Thu, 22 Oct 2009 04:29:18 +0000 (21:29 -0700)]
List a few more co-conspirators.
Keith's name already shows up in the git log, so it would be
wrong to not mention him. And Martin and Jamey have been
helpful in discussions about what an ideal mail system
would look like.
Mikhail Gusarov [Thu, 22 Oct 2009 04:07:43 +0000 (21:07 -0700)]
Add sha1.c and libsha1.h for doing SHA-1-based message-ID generation.
This code comes courtesy of Brian Gladman and Mikhail Gusarov.
Both files are available under the GPL and were downloaded as
version 0.2 of libsha1 from git://github.com/dottedmag/libsha1.git
with the following commit:
Carl Worth [Wed, 21 Oct 2009 23:03:03 +0000 (16:03 -0700)]
Implement "notmuch restore".
It's pretty easy to do with all the right infrastructure in place.
Now that I can get my tags from sup to notmuch, maybe I'll be able
to start reading mail again.
We actually need this before the include of xutil.h, but
it was previously stuck randomly among various system
includes. Instead, put it at the top, right after include
the notmuch.h header that defines it.
Carl Worth [Wed, 21 Oct 2009 22:46:46 +0000 (15:46 -0700)]
notmuch_query_search: Clarify the documentation.
This is where we wanted to put the note to recommend the user
call notmuch_message_destroy if the lifetime of the message
is much shorter than the lifetime of the query. (Somehow this
had ended up in the documentation of notmuch_message_get_tags
before.)
Carl Worth [Wed, 21 Oct 2009 22:42:54 +0000 (15:42 -0700)]
notmuch_message_get_message_id: Fix to cache result
Previously, this would allocate new memory with every call. That
was with talloc, of course, so there wasn't any leaking (eventually).
But since we're now calling this internally we want to be a little
less wasteful. It's easy enough to just stash the result into the
message on the first call, and then just return that on subsequent
calls.
Carl Worth [Wed, 21 Oct 2009 22:37:51 +0000 (15:37 -0700)]
database: Add new notmuch_database_find_message
With this function, and the recently added support for
notmuch_message_get_thread_ids, we now recode the find_thread_ids
function to work just the way we expect a user of the public
notmuch API to work. Not too bad really.
Carl Worth [Wed, 21 Oct 2009 22:23:08 +0000 (15:23 -0700)]
Add notmuch_message_get_thread_ids function
Along with all of the notmuch_thread_ids_t iterator functions.
Using a consistent idiom seems better here rather than returning
a comma-separated string and forcing the user to parse it.
Carl Worth [Wed, 21 Oct 2009 20:57:02 +0000 (13:57 -0700)]
Move declarations for xutil.c from notmuch-private to new xutil.h.
The motivation here is that our top-level notmuch.c main program
wants to start using these, but we don't want it to see into
notmuch-private.h, (since our main program is a test vehicle
for the "public" notmuch interface in notmuch.h).
Carl Worth [Wed, 21 Oct 2009 17:07:34 +0000 (10:07 -0700)]
notmuch setup: Collapse internal whitespace within message-id
I'm too lazy to see what the RFC says, but I know that having
whitespace inside a message-ID is sure to confuse things. And
besides, this makes things more compatible with sup so that
I have some hope of importing sup labels.
Carl Worth [Wed, 21 Oct 2009 07:35:56 +0000 (00:35 -0700)]
notmuch dump: Fix the sorting of results.
To properly support sorting in notmuch_query we know use an
Enquire object. We also throw in a QueryParser too, so we're
really close to being able to support arbitrary full-text
searches.
I took a look at the supported QueryParser syntax and chose
a set of flags for everything I like, (such as supporting
Boolean operators in either case ("AND" or "and"), supporting
phrase searching, supporting + and - to include/preclude terms,
and supporting a trailing * on any term as a wildcard).
Carl Worth [Wed, 21 Oct 2009 07:32:30 +0000 (00:32 -0700)]
notmuch setup: Print a few protecting spaces after progress reports.
This is to help keep the report looking clean when a new report
is shorter than a previous reports, (say, when crossing the
boundary from over one minute remaining to less than one minute
remaining).
This used to be here, but I must have accidentally dropped it
when reformatting the progress report recently.
Carl Worth [Wed, 21 Oct 2009 05:40:37 +0000 (22:40 -0700)]
query: Remove the magic NOTMUCH_QUERY_ALL
Using the address of a static char* was clever, but really
unnecessary. An empty string is much less magic, and even
easier to understand as the way to query everything from
the database.
Carl Worth [Wed, 21 Oct 2009 05:27:56 +0000 (22:27 -0700)]
notmuch dump: Free each message as it's used.
Previously we were leaking[*] memory in that the memory footprint of
a "notmuch dump" run would continue to grow until the output was
complete, and then finally all the memory would be freed.
Now, the memory footprint is small and constant, O(1) rather than
O(n) in the number of messages.
[*] Not leaking in a valgrind sense---every byte was still carefully
being accounted for and freed eventually.
Carl Worth [Wed, 21 Oct 2009 05:24:59 +0000 (22:24 -0700)]
Add destroy functions for results, message, and tags.
None of these are strictly necessary, (everything was leak-free
without them), but notmuch_message_destroy can actually be useful
for when one query has many message results, but only one is needed
to be live at a time.
The destroy functions for results and tags are fairly gratuitous, as
there's unlikely to be any benefit from calling them. But they're all
easy to add, (all of these functions are just wrappers for talloc_free),
and we do so for consistency and completeness.
Carl Worth [Wed, 21 Oct 2009 04:03:30 +0000 (21:03 -0700)]
Implement 'notmuch dump'.
This is a fairly big milestone for notmuch. It's our first command
to do anything besides building the index, so it proves we can
actually read valid results out from the index.
It also puts in place almost all of the API and infrastructure we
will need to allow searching of the database.
Finally, with this change we are now using talloc inside of notmuch
which is truly a delight to use. And now that I figured out how
to use C++ objects with talloc allocation, (it requires grotty
parts of C++ such as "placement new" and "explicit destructors"),
we are valgrind-clean for "notmuch dump", (as in "no leaks are
possible").
Carl Worth [Tue, 20 Oct 2009 22:09:51 +0000 (15:09 -0700)]
Rename private notmuch_message_t to notmuch_message_file_t
This is in preparation for a new, public notmuch_message_t.
Eventually, the public notmuch_message_t is going to grow enough
features to need to be file-backed and will likely need everything
that's now in message-file.c. So we may fold these back into one
object/implementation in the future.
Carl Worth [Tue, 20 Oct 2009 20:16:16 +0000 (13:16 -0700)]
notmuch: Fix setup so that accepting the default mail path works.
The recent change from GIOChannel to getline, (with a semantic
change of the newline terminator now being included in the
result that setup_command sees), broke this.
Carl Worth [Tue, 20 Oct 2009 20:07:19 +0000 (13:07 -0700)]
message: Use g_hash_table_destroy instead of g_hash_table_unref
I'm trying to chase down 3 still-reachable pointers to glib hash
tables.
This change didn't help with that, but I think destroy might be a
better semantic match for what I actually want. (It shouldn't matter
though since I never take any additional references.)
Carl Worth [Tue, 20 Oct 2009 19:48:14 +0000 (12:48 -0700)]
message.c: Free leaked memory in notmuch_message object
We were careful to free this memory when we finished parsing the
headers, but we missed it for the case of closing the message
without ever parsing all of the headers.
Carl Worth [Tue, 20 Oct 2009 17:14:00 +0000 (10:14 -0700)]
notmuch_database_open: Fix error message for file-not-found.
I was incorrectly using the return value of stat (-1) instead of
errno (ENOENT) to try to construct the error message here.
Also, while we're here, reword the error message to not have
"stat" in it, which in spite of what a Unix programmer will
tell you, is not actually a word.
Carl Worth [Tue, 20 Oct 2009 17:07:11 +0000 (10:07 -0700)]
Add some explanation about NOTMUCH_BASE to setup_command.
Since we allow the user to enter a custom directory, we need to
let the user know how to make this persistent. Of course, a better
answer would be to take what the user entered and shove it into
a ~/.notmuch-config file or so, but for now this will have to do.
Carl Worth [Tue, 20 Oct 2009 16:56:25 +0000 (09:56 -0700)]
notmuch_database_create/open: Fix to handle NULL as documented.
When documenting these functions I described support for a
NOTMUCH_BASE environment variable to be consulted in the case
of a NULL path. Only, I had forgotten to actually write the
code.
This code exists now, with a new, exported function:
Carl Worth [Tue, 20 Oct 2009 16:52:01 +0000 (09:52 -0700)]
notmuch_message_get_header: Fix bogus return of NULL header.
A simple bug meant that the correct value was being inserted into
the hash table, but a NULL value would be returned in some cases.
(If the value was already in the hash table at the beginning of
the call the the correct value would be returned, but if the
function had to parse to reach it then it would return NULL.)
This was tripping up the recently-added code to ignore messages
with NULL From:, Subject:, and To: headers, (which is fortunate
since otherwise the broken parsing might have stayed hidden for
longer).
Carl Worth [Tue, 20 Oct 2009 06:41:31 +0000 (23:41 -0700)]
notmuch: Revamp help message a bit.
The big update here is the addition of the dump and restore commands
which are next on my list. Also, I've now come up with a syntax for
documenting the arguments of sub-commands.
Carl Worth [Tue, 20 Oct 2009 06:08:49 +0000 (23:08 -0700)]
notmuch: Ignore files that don't look like email messages.
This is helpful for things like indexes that other mail programs
may have left around. It also means we can make the initial
instructions much easier, (the user need not worry about moving
away auxiliary files from some other email program).
Carl Worth [Tue, 20 Oct 2009 05:24:28 +0000 (22:24 -0700)]
Remove test programs, xapian-dump and notmuch-index-message
These were just little tests while getting comfortable with
GMime and xapian. I'll likely use pieces of these as notmuch
continues, but for now let's not distract anyone looking
at notmuch with these.
And the code will live on in the history if I need to look
at it.
Carl Worth [Tue, 20 Oct 2009 01:30:48 +0000 (18:30 -0700)]
notmuch: Reword the progress report slightly.
I noticed this style during a recent Debian install and I liked
how much less busy it is compared to what we had before, (while
still telling the user everything she might want).
Carl Worth [Mon, 19 Oct 2009 23:38:44 +0000 (16:38 -0700)]
Rework message parsing to use getline rather than mmap.
The line-based parsing can be a bit awkward when wanting to peek
ahead, (say, for folded header values), but it's so convenient
to be able to trust that a string terminator exists on every
line so it cleans up the code considerably.
Carl Worth [Mon, 19 Oct 2009 20:40:56 +0000 (13:40 -0700)]
Document which pieces of glib we're still using.
Looks like we can copy in a hash-table implementation, (from cairo,
say), and then a few _ascii_ functions from glib, (we'll need to
switch a few current uses if things like isspace, etc. to locale-
independent versions as well). So not too hard to free ourselves
of glib for now, (until we add GMime back in later, of course).
Carl Worth [Mon, 19 Oct 2009 20:19:37 +0000 (13:19 -0700)]
date.c: Add hard-coded definition of HAVE_TIMEZONE
The original code expected this to be set by running configure.
We'll just manually set it here for now. This isn't as portable
as if we were doing some compile-time examination of the current
system, but I don't need portability now.
When someone comes along that wants to port notmuch to another
system, they will already have all the #ifdefs in place and
will simply need to add the appropriate machinery to set the
defines.
Carl Worth [Mon, 19 Oct 2009 20:14:37 +0000 (13:14 -0700)]
date.c: Don't use glib's slice allocator.
This change is gratuitous. For now, notmuch is still linking
against glib, so I don't have any requirement to remove this,
(unlike the last few changes where good taste really did
require the changes).
The motivation here is two-fold:
1. I'm considering switching away from all glib-based allocation
soon so that I can more easily verify that the memory management
is solid. I want valgrind to say "no leaks are possible" not
"there is tons of memory still allocated, but probably reachable
so who knows if there are leaks or not?". And glib seems to make
that impossible.
2. I don't think there's anything performance-sensitive about the
allocation here. (In fact, if there is, then the right answer
would be to do this parsing without any allocation whatsoever.)
Carl Worth [Mon, 19 Oct 2009 20:11:57 +0000 (13:11 -0700)]
date.c: Remove occurrences of gboolean.
While this is surely one of the most innocent typedefs, it still
annoys me to have basic types like 'int' re-defined like this.
It just makes it harder to copy the code between projects, with
very little benefit in readability.
For readability, predicate functions and variables should be
obviously Boolean-natured by their actual *names*.
Carl Worth [Mon, 19 Oct 2009 20:09:19 +0000 (13:09 -0700)]
date.c: Remove all occurrences of g_return_val_if_fail
That's got to be one of the hardest macro names to read, ever,
(it's phrased with an implicit negative in the condition,
rather than something simple like "assert").
Plus, it's evil, since it's a macro with a return in it.
And finally, it's actually *longer* than just typing "if"
and "return". So what's the point of this ugly idiom?
Carl Worth [Mon, 19 Oct 2009 20:06:55 +0000 (13:06 -0700)]
date.c: Change headers/defines t owork within notmuch.
We can't rely on any gmime-internal headers, (and fortunately we
don't need to). We also aren't burdened with any autconf machinery
so don't reference any of that.