minor: folder: Base: improve style and comments
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Nicolas Sebrecht
parent
1f8163b194
commit
9a7603af37
@ -35,13 +35,13 @@ class BaseFolder(object):
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self.ui = getglobalui()
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self.messagelist = {}
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# Save original name for folderfilter operations
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# Save original name for folderfilter operations.
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self.ffilter_name = name
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# Top level dir name is always ''
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# Top level dir name is always ''.
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self.root = None
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self.name = name if not name == self.getsep() else ''
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self.newmail_hook = None
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# Only set the newmail_hook if the IMAP folder is named 'INBOX'
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# Only set the newmail_hook if the IMAP folder is named 'INBOX'.
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if self.name == 'INBOX':
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self.newmail_hook = repository.newmail_hook
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self.have_newmail = False
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@ -69,7 +69,7 @@ class BaseFolder(object):
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self.repoconfname, "sync_deletes", True)
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# Determine if we're running static or dynamic folder filtering
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# and check filtering status
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# and check filtering status.
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self._dynamic_folderfilter = self.config.getdefaultboolean(
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self.repoconfname, "dynamic_folderfilter", False)
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self._sync_this = repository.should_sync_folder(self.ffilter_name)
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@ -80,7 +80,7 @@ class BaseFolder(object):
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self.ui.debug('', "Filtering out '%s'[%s] due to folderfilter"%
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(self.ffilter_name, repository))
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# Passes for syncmessagesto
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# Passes for syncmessagesto.
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self.syncmessagesto_passes = [
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('copying messages' , self.__syncmessagesto_copy),
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('deleting messages' , self.__syncmessagesto_delete),
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@ -239,8 +239,8 @@ class BaseFolder(object):
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newval = self.get_uidvalidity()
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uidfilename = self._getuidfilename()
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with open(uidfilename + ".tmp", "wt") as file:
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file.write("%d\n"% newval)
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with open(uidfilename + ".tmp", "wt") as uidfile:
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uidfile.write("%d\n"% newval)
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os.rename(uidfilename + ".tmp", uidfilename)
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self._base_saved_uidvalidity = newval
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@ -248,14 +248,16 @@ class BaseFolder(object):
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"""Retrieve the current connections UIDVALIDITY value
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This function needs to be implemented by each Backend
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:returns: UIDVALIDITY as a (long) number"""
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:returns: UIDVALIDITY as a (long) number."""
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raise NotImplementedError
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def cachemessagelist(self):
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"""Reads the message list from disk or network and stores it in
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memory for later use. This list will not be re-read from disk or
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memory unless this function is called again."""
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"""Cache the list of messages.
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Reads the message list from disk or network and stores it in memory for
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later use. This list will not be re-read from disk or memory unless
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this function is called again."""
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raise NotImplementedError
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@ -288,7 +290,7 @@ class BaseFolder(object):
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raise NotImplementedError
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def uidexists(self, uid):
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"""Returns True if uid exists"""
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"""Returns True if uid exists."""
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return uid in self.getmessagelist()
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@ -310,14 +312,16 @@ class BaseFolder(object):
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raise NotImplementedError
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def getmaxage(self):
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""" maxage is allowed to be either an integer or a date of the
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form YYYY-mm-dd. This returns a time_struct. """
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"""Return maxage.
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maxage is allowed to be either an integer or a date of the form
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YYYY-mm-dd. This returns a time_struct."""
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maxagestr = self.config.getdefault("Account %s"%
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self.accountname, "maxage", None)
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if maxagestr == None:
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if maxagestr is None:
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return None
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# is it a number?
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# Is it a number?
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try:
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maxage = int(maxagestr)
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if maxage < 1:
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@ -325,8 +329,8 @@ class BaseFolder(object):
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OfflineImapError.ERROR.MESSAGE)
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return time.gmtime(time.time() - 60*60*24*maxage)
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except ValueError:
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pass # maybe it was a date
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# is it a date string?
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pass # Maybe it was a date.
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# Is it a date string?
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try:
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date = time.strptime(maxagestr, "%Y-%m-%d")
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if date[0] < 1900:
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@ -441,8 +445,9 @@ class BaseFolder(object):
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raise NotImplementedError
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def addmessageflags(self, uid, flags):
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"""Adds the specified flags to the message's flag set. If a given
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flag is already present, it will not be duplicated.
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"""Adds the specified flags to the message's flag set.
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If a given flag is already present, it will not be duplicated.
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Note that this function does not check against dryrun settings,
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so you need to ensure that it is never called in a
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@ -463,12 +468,14 @@ class BaseFolder(object):
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self.addmessageflags(uid, flags)
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def deletemessageflags(self, uid, flags):
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"""Removes each flag given from the message's flag set. If a given
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flag is already removed, no action will be taken for that flag.
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"""Removes each flag given from the message's flag set.
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Note that this function does not check against dryrun settings,
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so you need to ensure that it is never called in a
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dryrun mode."""
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dryrun mode.
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If a given flag is already removed, no action will be taken for that
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flag."""
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newflags = self.getmessageflags(uid) - flags
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self.savemessageflags(uid, newflags)
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@ -518,8 +525,10 @@ class BaseFolder(object):
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self.addmessagelabels(uid, labels)
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def deletemessagelabels(self, uid, labels):
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"""Removes each label given from the message's label set. If a given
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label is already removed, no action will be taken for that label.
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"""Removes each label given from the message's label set.
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If a given label is already removed, no action will be taken for that
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label.
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Note that this function does not check against dryrun settings,
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so you need to ensure that it is never called in a
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@ -604,22 +613,26 @@ class BaseFolder(object):
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if insertionpoint == -1:
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self.ui.debug('', 'addmessageheader: headers were missing')
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else:
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self.ui.debug('', 'addmessageheader: headers end at position %d' % insertionpoint)
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self.ui.debug('',
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'addmessageheader: headers end at position %d'% insertionpoint)
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mark = '==>EOH<=='
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contextstart = max(0, insertionpoint - 100)
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contextend = min(len(content), insertionpoint + 100)
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self.ui.debug('', 'addmessageheader: header/body transition context (marked by %s): %s' %
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(mark, repr(content[contextstart:insertionpoint]) + \
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mark + repr(content[insertionpoint:contextend])))
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self.ui.debug('', 'addmessageheader: header/body transition "
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context (marked by %s): %s%s%s'% (
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mark, repr(content[contextstart:insertionpoint]),
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mark, repr(content[insertionpoint:contextend])
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)
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)
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# Hoping for case #4
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# Hoping for case #4.
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prefix = linebreak
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suffix = ''
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# Case #2
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# Case #2.
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if insertionpoint == 0:
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prefix = ''
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suffix = ''
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# Either case #1 or #3
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# Either case #1 or #3.
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elif insertionpoint == -1:
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prefix = ''
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suffix = linebreak
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@ -632,16 +645,18 @@ class BaseFolder(object):
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if content[0:len(linebreak)] != linebreak:
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suffix = suffix + linebreak
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self.ui.debug('', 'addmessageheader: insertionpoint = %d'% insertionpoint)
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self.ui.debug('',
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'addmessageheader: insertionpoint = %d'% insertionpoint)
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headers = content[0:insertionpoint]
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self.ui.debug('', 'addmessageheader: headers = %s'% repr(headers))
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new_header = prefix + ("%s: %s"% (headername, headervalue)) + suffix
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self.ui.debug('', 'addmessageheader: new_header = ' + repr(new_header))
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self.ui.debug('', 'addmessageheader: new_header = %s'% repr(new_header))
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return headers + new_header + content[insertionpoint:]
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def __find_eoh(self, content):
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"""Searches for the point where mail headers end.
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Either double '\n', or end of string.
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Arguments:
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@ -657,14 +672,15 @@ class BaseFolder(object):
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def getmessageheader(self, content, name):
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"""Searches for the first occurence of the given header and returns
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its value. Header name is case-insensitive.
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"""Return the value of the first occurence of the given header.
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Header name is case-insensitive.
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Arguments:
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- contents: message itself
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- name: name of the header to be searched
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Returns: header value or None if no such header was found
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Returns: header value or None if no such header was found.
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"""
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self.ui.debug('', 'getmessageheader: called to get %s'% name)
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@ -673,7 +689,8 @@ class BaseFolder(object):
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headers = content[0:eoh]
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self.ui.debug('', 'getmessageheader: headers = %s'% repr(headers))
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m = re.search('^%s:(.*)$' % name, headers, flags = re.MULTILINE | re.IGNORECASE)
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m = re.search('^%s:(.*)$'% name, headers,
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flags= re.MULTILINE | re.IGNORECASE)
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if m:
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return m.group(1).strip()
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else:
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@ -681,14 +698,13 @@ class BaseFolder(object):
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def getmessageheaderlist(self, content, name):
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"""Searches for the given header and returns a list of values for
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that header.
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"""Return a list of values for the given header.
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Arguments:
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- contents: message itself
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- name: name of the header to be searched
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Returns: list of header values or emptylist if no such header was found
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Returns: list of header values or empty list if no such header was found.
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"""
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self.ui.debug('', 'getmessageheaderlist: called to get %s'% name)
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@ -697,7 +713,8 @@ class BaseFolder(object):
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headers = content[0:eoh]
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self.ui.debug('', 'getmessageheaderlist: headers = %s'% repr(headers))
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return re.findall('^%s:(.*)$' % name, headers, flags = re.MULTILINE | re.IGNORECASE)
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return re.findall('^%s:(.*)$'%
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name, headers, flags= re.MULTILINE | re.IGNORECASE)
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def deletemessageheaders(self, content, header_list):
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@ -707,14 +724,14 @@ class BaseFolder(object):
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- content: message itself
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- header_list: list of headers to be deleted or just the header name
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We expect our message to have '\n' as line endings.
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"""
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We expect our message to have '\n' as line endings."""
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if type(header_list) != type([]):
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header_list = [header_list]
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self.ui.debug('', 'deletemessageheaders: called to delete %s'% (header_list))
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if not len(header_list): return content
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if not len(header_list):
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return content
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eoh = self.__find_eoh(content)
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self.ui.debug('', 'deletemessageheaders: end of headers = %d'% eoh)
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@ -728,15 +745,16 @@ class BaseFolder(object):
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if len(h) > len(trim_h) and h[0:len(trim_h)+1] == (trim_h + ":"):
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keep_it = False
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break
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if keep_it: new_headers.append(h)
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if keep_it:
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new_headers.append(h)
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return ('\n'.join(new_headers) + rest)
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return '\n'.join(new_headers) + rest
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def change_message_uid(self, uid, new_uid):
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"""Change the message from existing uid to new_uid
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"""Change the message from existing uid to new_uid.
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If the backend supports it (IMAP does not).
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@ -779,7 +797,7 @@ class BaseFolder(object):
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# synced to the status cache. This is only a problem with
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# self.getmessage(). So, don't call self.getmessage unless
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# really needed.
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if register: # output that we start a new thread
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if register: # Output that we start a new thread.
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self.ui.registerthread(self.repository.account)
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try:
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@ -802,9 +820,9 @@ class BaseFolder(object):
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self.change_message_uid(uid, new_uid)
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statusfolder.deletemessage(uid)
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# Got new UID, change the local uid.
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# Save uploaded status in the statusfolder
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# Save uploaded status in the statusfolder.
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statusfolder.savemessage(new_uid, message, flags, rtime)
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# Check whether the mail has been seen
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# Check whether the mail has been seen.
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if 'S' not in flags:
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self.have_newmail = True
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elif new_uid == 0:
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@ -819,11 +837,11 @@ class BaseFolder(object):
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raise OfflineImapError("Trying to save msg (uid %d) on folder "
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"%s returned invalid uid %d"% (uid, dstfolder.getvisiblename(),
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new_uid), OfflineImapError.ERROR.MESSAGE)
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except (KeyboardInterrupt): # bubble up CTRL-C
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except (KeyboardInterrupt): # Bubble up CTRL-C.
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raise
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except OfflineImapError as e:
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if e.severity > OfflineImapError.ERROR.MESSAGE:
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raise # bubble severe errors up
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raise # Bubble severe errors up.
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self.ui.error(e, exc_info()[2])
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except Exception as e:
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self.ui.error(e, exc_info()[2],
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@ -843,7 +861,7 @@ class BaseFolder(object):
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This function checks and protects us from action in dryrun mode."""
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# We have no new mail yet
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# We have no new mail yet.
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self.have_newmail = False
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threads = []
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@ -855,18 +873,17 @@ class BaseFolder(object):
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num_to_copy, self, self.repository, dstfolder.repository))
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return
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for num, uid in enumerate(copylist):
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# bail out on CTRL-C or SIGTERM
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# Bail out on CTRL-C or SIGTERM.
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if offlineimap.accounts.Account.abort_NOW_signal.is_set():
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break
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if uid > 0 and dstfolder.uidexists(uid):
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# dst has message with that UID already, only update status
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# dstfolder has message with that UID already, only update status.
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flags = self.getmessageflags(uid)
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rtime = self.getmessagetime(uid)
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statusfolder.savemessage(uid, None, flags, rtime)
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continue
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self.ui.copyingmessage(uid, num+1, num_to_copy, self, dstfolder)
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# Exceptions are caught in copymessageto().
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if self.suggeststhreads():
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self.waitforthread()
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@ -935,23 +952,20 @@ class BaseFolder(object):
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return selfflags
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knownkeywords = set(keywordmap.keys())
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selfkeywords = self.getmessagekeywords(uid)
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if not knownkeywords >= selfkeywords:
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#some of the message's keywords are not in the mapping, so
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#skip them
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# Some of the message's keywords are not in the mapping, so
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# skip them.
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skipped_keywords = list(selfkeywords - knownkeywords)
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selfkeywords &= knownkeywords
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self.ui.warn("Unknown keywords skipped: %s\n"
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"You may want to change your configuration to include "
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"those\n" % (skipped_keywords))
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keywordletterset = set([keywordmap[keyw] for keyw in selfkeywords])
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#add the mapped keywords to the list of message flags
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# Add the mapped keywords to the list of message flags.
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selfflags |= keywordletterset
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except NotImplementedError:
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pass
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@ -1003,14 +1017,14 @@ class BaseFolder(object):
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for flag, uids in addflaglist.items():
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self.ui.addingflags(uids, flag, dstfolder)
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if self.repository.account.dryrun:
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continue #don't actually add in a dryrun
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continue # Don't actually add in a dryrun.
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dstfolder.addmessagesflags(uids, set(flag))
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statusfolder.addmessagesflags(uids, set(flag))
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for flag,uids in delflaglist.items():
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self.ui.deletingflags(uids, flag, dstfolder)
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if self.repository.account.dryrun:
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continue #don't actually remove in a dryrun
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continue # Don't actually remove in a dryrun.
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dstfolder.deletemessagesflags(uids, set(flag))
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statusfolder.deletemessagesflags(uids, set(flag))
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@ -1050,7 +1064,7 @@ class BaseFolder(object):
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"""
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for (passdesc, action) in self.syncmessagesto_passes:
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# bail out on CTRL-C or SIGTERM
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# Bail out on CTRL-C or SIGTERM.
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if offlineimap.accounts.Account.abort_NOW_signal.is_set():
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break
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try:
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@ -1064,7 +1078,7 @@ class BaseFolder(object):
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except Exception as e:
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self.ui.error(e, exc_info()[2], "Syncing folder %s [acc: %s]" %\
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(self, self.accountname))
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raise # raise unknown Exceptions so we can fix them
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raise # Raise unknown Exceptions so we can fix them.
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def __eq__(self, other):
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"""Comparisons work either on string comparing folder names or
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