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import re
import os
import glob
import logging
import alot.commands as commands
class Completer(object):
"""base class for completers"""
def complete(self, original, pos):
"""returns a list of completions and cursor positions for the
string original from position pos on.
:param original: the string to complete
:type original: str
:param pos: starting position to complete from
:returns: pairs of completed string and cursor position in the
new string
:rtype: list of (str, int)
"""
return list()
def relevant_part(self, original, pos, sep=' '):
"""
calculates the subword in a `sep`-splitted list of substrings of
`original` that `pos` is ia.n
"""
start = original.rfind(sep, 0, pos) + 1
end = original.find(sep, pos - 1)
if end == -1:
end = len(original)
return original[start:end], start, end, pos - start
class QueryCompleter(Completer):
"""completion for a notmuch query string"""
def __init__(self, dbman, accountman):
"""
:param dbman: used to look up avaliable tagstrings
:type dbman: :class:`~alot.db.DBManager`
:param accountman: used to look up known addresses to complete 'from'
and 'to' queries
:type accountman: :class:`~alot.account.AccountManager`
"""
self.dbman = dbman
abooks = accountman.get_addressbooks()
self._contactscompleter = ContactsCompleter(abooks, addressesonly=True)
self._tagscompleter = TagsCompleter(dbman)
self.keywords = ['tag', 'from', 'to', 'subject', 'attachment',
'is', 'id', 'thread', 'folder']
def complete(self, original, pos):
mypart, start, end, mypos = self.relevant_part(original, pos)
myprefix = mypart[:mypos]
m = re.search('(tag|is|to|from):(\w*)', myprefix)
if m:
cmd, params = m.groups()
cmdlen = len(cmd) + 1 # length of the keyword part incld colon
if cmd in ['to', 'from']:
localres = self._contactscompleter.complete(mypart[cmdlen:],
mypos - cmdlen)
else:
localres = self._tagscompleter.complete(mypart[cmdlen:],
mypos - cmdlen)
resultlist = []
for ltxt, lpos in localres:
newtext = original[:start] + cmd + ':' + ltxt + original[end:]
newpos = start + len(cmd) + 1 + lpos
resultlist.append((newtext, newpos))
return resultlist
else:
matched = filter(lambda t: t.startswith(myprefix), self.keywords)
resultlist = []
for keyword in matched:
newprefix = original[:start] + keyword + ':'
resultlist.append((newprefix + original[end:], len(newprefix)))
return resultlist
class TagsCompleter(Completer):
"""completion for a comma separated list of tagstrings"""
def __init__(self, dbman):
"""
:param dbman: used to look up avaliable tagstrings
:type dbman: :class:`~alot.db.DBManager`
"""
self.dbman = dbman
def complete(self, original, pos, single_tag=True):
tags = self.dbman.get_all_tags()
if single_tag:
prefix = original[:pos]
matching = [t for t in tags if t.startswith(prefix)]
return [(t, len(t)) for t in matching]
else:
mypart, start, end, mypos = self.relevant_part(original, pos,
sep=',')
prefix = mypart[:mypos]
res = []
for tag in tags:
if tag.startswith(prefix):
newprefix = original[:start] + tag
if not original[end:].startswith(','):
newprefix += ','
res.append((newprefix + original[end:], len(newprefix)))
return res
class ContactsCompleter(Completer):
"""completes contacts"""
def __init__(self, abooks, addressesonly=False):
"""
:param abooks: used to look up email addresses
:type abooks: list of :class:`~alot.account.AddresBook`
:param addressesonly: only insert address, not the realname of the
contact
:type addressesonly: bool
"""
self.abooks = abooks
self.addressesonly = addressesonly
def complete(self, original, pos):
if not self.abooks:
return []
prefix = original[:pos]
res = []
for abook in self.abooks:
res = res + abook.lookup(prefix)
if self.addressesonly:
returnlist = [(email, len(email)) for (name, email) in res]
else:
returnlist = []
for name, email in res:
newtext = "%s <%s>" % (name, email)
returnlist.append((newtext, len(newtext)))
return returnlist
class AccountCompleter(Completer):
"""completes users' own mailaddresses"""
def __init__(self, accountman):
"""
:param accountman: used to look up the list of addresses
:type accountman: :class:`~alot.account.AccountManager`
"""
self.accountman = accountman
def complete(self, original, pos):
valids = self.accountman.get_main_addresses()
prefix = original[:pos]
return [(a, len(a)) for a in valids if a.startswith(prefix)]
class CommandCompleter(Completer):
"""completes commands"""
def __init__(self, mode):
"""
:param mode: mode identifier
:type mode: str
"""
self.mode = mode
def complete(self, original, pos):
#TODO refine <tab> should get current querystring
commandprefix = original[:pos]
logging.debug('original="%s" prefix="%s"' % (original, commandprefix))
cmdlist = commands.COMMANDS['global'].copy()
cmdlist.update(commands.COMMANDS[self.mode])
matching = [t for t in cmdlist if t.startswith(commandprefix)]
return [(t, len(t)) for t in matching]
class CommandLineCompleter(Completer):
"""completion for commandline"""
def __init__(self, dbman, accountman, mode):
"""
:param dbman: used to look up avaliable tagstrings
:type dbman: :class:`~alot.db.DBManager`
:param accountman: used to look up known addresses to complete 'from'
and 'to' queries
:type accountman: :class:`~alot.account.AccountManager`
:param mode: mode identifier
:type mode: str
"""
self.dbman = dbman
self.accountman = accountman
self.mode = mode
self._commandcompleter = CommandCompleter(mode)
self._querycompleter = QueryCompleter(dbman, accountman)
self._tagscompleter = TagsCompleter(dbman)
abooks = accountman.get_addressbooks()
self._contactscompleter = ContactsCompleter(abooks)
self._pathcompleter = PathCompleter()
def complete(self, line, pos):
words = line.split(' ', 1)
res = []
if pos <= len(words[0]): # we complete commands
for cmd, cpos in self._commandcompleter.complete(line, pos):
newtext = ('%s %s' % (cmd, ' '.join(words[1:])))
res.append((newtext, cpos + 1))
else:
cmd, params = words
localpos = pos - (len(cmd) + 1)
if cmd == 'search':
res = self._querycompleter.complete(params, localpos)
elif cmd == 'refine':
if self.mode == 'search':
res = self._querycompleter.complete(params, localpos)
elif cmd == 'set' and self.mode == 'envelope':
header, params = params.split(' ', 1)
localpos = localpos - (len(header) + 1)
if header.lower() in ['to', 'cc', 'bcc']:
# prepend 'set ' + header and correct position
def f((completed, pos)):
return ('%s %s' % (header, completed),
pos + len(header) + 1)
res = map(f, self._contactscompleter.complete(params,
localpos))
logging.debug(res)
elif cmd == 'retag':
res = self._tagscompleter.complete(params, localpos,
single_tag=False)
elif cmd == 'toggletag':
res = self._tagscompleter.complete(params, localpos)
elif cmd == 'help':
res = self._commandcompleter.complete(params, localpos)
elif cmd in ['compose']:
res = self._contactscompleter.complete(params, localpos)
elif cmd in ['attach', 'edit', 'save']:
res = self._pathcompleter.complete(params, localpos)
# prepend cmd and correct position
res = [('%s %s' % (cmd, t), p + len(cmd) + 1) for (t, p) in res]
return res
class PathCompleter(Completer):
"""completion for paths"""
def complete(self, original, pos):
if not original:
return [('~/', 2)]
prefix = os.path.expanduser(original[:pos])
return [(f, len(f)) for f in glob.glob(prefix + '*')]
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