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from notmuch import Database
from datetime import datetime
import logging
import email
class DBManager:
"""
keeps track of your index parameters, can create notmuch.Query
objects from its Database on demand and implements a bunch of
database specific functions.
"""
def __init__(self, path=None, ro=False):
self.ro = ro
self.path = path
def count_messages(self, querystring):
return self.query(querystring).count_messages()
def search_thread_ids(self, querystring):
threads = self.query(querystring).search_threads()
return [thread.get_thread_id() for thread in threads]
def find_message(self, mid):
db = Database(path=self.path)
return db.find_message(mid)
def get_message(self, mid):
"""returns the message with the given id and wrapps it in a Message
:param mid: the message id of the message to look up
:type mid: str.
:returns: Message -- the message.
"""
return Message(self, self.find_message(mid))
def get_thread(self, tid, writeable=False):
query = self.query('thread:' + tid, writeable=writeable)
#TODO raise exceptions here in 0<case msgcount>1
return Thread(self, query.search_threads().next())
def get_all_tags(self):
mode = Database.MODE.READ_ONLY
db = Database(path=self.path, mode=mode)
return [tag for tag in db.get_all_tags()]
def query(self, querystring, writeable=False):
"""creates notmuch.Query objects on demand
:param querystring: The query string to use for the lookup
:type query: str.
:param writeable: Try to return a writeable Query object
:type state: bool.
:returns: notmuch.Query -- the query object.
"""
if writeable:
mode = Database.MODE.READ_WRITE
else:
mode = Database.MODE.READ_ONLY
db = Database(path=self.path, mode=mode)
return db.create_query(querystring)
class Thread:
def __init__(self, dbman, thread):
self.dbman = dbman
self.tid = thread.get_thread_id()
self.strrep = str(thread)
self.total_messages = thread.get_total_messages()
self.topmessages = [m.get_message_id() for m in thread.get_toplevel_messages()]
self.authors = thread.get_authors()
self.subject = thread.get_subject()
self.oldest = datetime.fromtimestamp(thread.get_oldest_date())
self.newest = datetime.fromtimestamp(thread.get_newest_date())
self.tags = set([str(tag) for tag in thread.get_tags()])
def get_thread_id(self):
return self.tid
def get_tags(self):
return list(self.tags)
def add_tags(self, tags):
tags = filter(lambda x: x not in self.tags, tags)
if tags:
query = self.dbman.query('thread:' + self.tid, writeable=True)
for msg in query.search_messages():
msg.freeze()
for tag in tags:
msg.add_tag(tag)
msg.thaw()
for tag in tags:
self.tags.add(tag)
def remove_tags(self, tags):
tags = filter(lambda x: x in self.tags, tags)
if tags:
query = self.dbman.query('thread:' + self.tid, writeable=True)
for msg in query.search_messages():
msg.freeze()
for tag in tags:
msg.remove_tag(tag)
msg.thaw()
for tag in tags:
self.tags.remove(tag)
def set_tags(self, tags):
query = self.dbman.query('thread:' + self.tid, writeable=True)
self.tags = set()
for msg in query.search_messages():
msg.freeze()
msg.remove_all_tags()
for tag in tags:
msg.add_tag(tag)
self.tags.add(tag)
msg.thaw()
def get_authors(self):
return self.authors
def get_subject(self):
return self.subject
def get_toplevel_messages(self):
return [self.dbman.get_message(mid) for mid in self.topmessages]
def get_newest_date(self):
return self.newest
def get_oldest_date(self):
return self.oldest
def get_total_messages(self):
return self.total_messages
class Message:
def __init__(self, dbman, msg):
self.dbman = dbman
self.mid = msg.get_message_id()
self.strrep = str(msg)
self.email = None # will be read upon first use
r = msg.get_replies() # not iterable if None
if r:
self.replies = [m.get_message_id() for m in msg.get_replies()]
else:
self.replies = []
self.filename = msg.get_filename()
self.tags = set([str(tag) for tag in msg.get_tags()])
def __str__(self):
return self.strrep
def get_replies(self):
#this doesn't work. see Note in doc -> more work here.
return [self.dbman.find_message(mid) for mid in self.replies]
def get_tags(self):
return list(self.tags)
def get_email(self):
if not self.email:
self.email = self.read_mail(self.filename)
return self.email
def read_mail(self, filename):
try:
f_mail = open(filename)
except EnvironmentError:
eml = email.message_from_string('Unable to open the file')
else:
eml = email.message_from_file(f_mail)
f_mail.close()
return eml
def add_tags(self, tags):
msg = self.dbman.find_message(self.mid)
msg.freeze()
for tag in tags:
msg.add_tag(tag)
self.tags.add(tag)
logging.debug('tag %s' % tags)
msg.thaw()
def remove_tags(self, tags):
msg = self.dbman.find_message(self.mid)
msg.freeze()
for tag in tags:
msg.remove_tag(tag)
try:
self.tags.remove(tag)
except KeyError:
pass # tag not in self.tags
logging.debug('untag %s' % tags)
msg.thaw()
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