Personal Computer World 2009 February/PCWFEB09.iso/Software/Linux/Kubuntu 8.10/kubuntu-8.10-desktop-i386.iso/casper/filesystem.squashfs/usr/lib/python2.5/mhlib.pyc

Python Compiled Bytecode | 2008-10-29 | 34KB | 1,261 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.5)

"""MH interface -- purely object-oriented (well, almost)

Executive summary:

import mhlib

mh = mhlib.MH()         # use default mailbox directory and profile
mh = mhlib.MH(mailbox)  # override mailbox location (default from profile)
mh = mhlib.MH(mailbox, profile) # override mailbox and profile

mh.error(format, ...)   # print error message -- can be overridden
s = mh.getprofile(key)  # profile entry (None if not set)
path = mh.getpath()     # mailbox pathname
name = mh.getcontext()  # name of current folder
mh.setcontext(name)     # set name of current folder

list = mh.listfolders() # names of top-level folders
list = mh.listallfolders() # names of all folders, including subfolders
list = mh.listsubfolders(name) # direct subfolders of given folder
list = mh.listallsubfolders(name) # all subfolders of given folder

mh.makefolder(name)     # create new folder
mh.deletefolder(name)   # delete folder -- must have no subfolders

f = mh.openfolder(name) # new open folder object

f.error(format, ...)    # same as mh.error(format, ...)
path = f.getfullname()  # folder's full pathname
path = f.getsequencesfilename() # full pathname of folder's sequences file
path = f.getmessagefilename(n)  # full pathname of message n in folder

list = f.listmessages() # list of messages in folder (as numbers)
n = f.getcurrent()      # get current message
f.setcurrent(n)         # set current message
list = f.parsesequence(seq)     # parse msgs syntax into list of messages
n = f.getlast()         # get last message (0 if no messagse)
f.setlast(n)            # set last message (internal use only)

dict = f.getsequences() # dictionary of sequences in folder {name: list}
f.putsequences(dict)    # write sequences back to folder

f.createmessage(n, fp)  # add message from file f as number n
f.removemessages(list)  # remove messages in list from folder
f.refilemessages(list, tofolder) # move messages in list to other folder
f.movemessage(n, tofolder, ton)  # move one message to a given destination
f.copymessage(n, tofolder, ton)  # copy one message to a given destination

m = f.openmessage(n)    # new open message object (costs a file descriptor)
m is a derived class of mimetools.Message(rfc822.Message), with:
s = m.getheadertext()   # text of message's headers
s = m.getheadertext(pred) # text of message's headers, filtered by pred
s = m.getbodytext()     # text of message's body, decoded
s = m.getbodytext(0)    # text of message's body, not decoded
"""
MH_PROFILE = '~/.mh_profile'
PATH = '~/Mail'
MH_SEQUENCES = '.mh_sequences'
FOLDER_PROTECT = 448
import os
import sys
import re
import mimetools
import multifile
import shutil
from bisect import bisect
__all__ = [
    'MH',
    'Error',
    'Folder',
    'Message']

class Error(Exception):
    pass


class MH:
    '''Class representing a particular collection of folders.
    Optional constructor arguments are the pathname for the directory
    containing the collection, and the MH profile to use.
    If either is omitted or empty a default is used; the default
    directory is taken from the MH profile if it is specified there.'''

    def __init__(self, path = None, profile = None):
        '''Constructor.'''
        if profile is None:
            profile = MH_PROFILE

        self.profile = os.path.expanduser(profile)
        if path is None:
            path = self.getprofile('Path')

        if not path:
            path = PATH

        if not os.path.isabs(path) and path[0] != '~':
            path = os.path.join('~', path)

        path = os.path.expanduser(path)
        if not os.path.isdir(path):
            raise Error, 'MH() path not found'

        self.path = path


    def __repr__(self):
        '''String representation.'''
        return 'MH(%r, %r)' % (self.path, self.profile)


    def error(self, msg, *args):
        '''Routine to print an error.  May be overridden by a derived class.'''
        sys.stderr.write('MH error: %s\n' % msg % args)


    def getprofile(self, key):
        '''Return a profile entry, None if not found.'''
        return pickline(self.profile, key)


    def getpath(self):
        """Return the path (the name of the collection's directory)."""
        return self.path


    def getcontext(self):
        '''Return the name of the current folder.'''
        context = pickline(os.path.join(self.getpath(), 'context'), 'Current-Folder')
        if not context:
            context = 'inbox'

        return context


    def setcontext(self, context):
        '''Set the name of the current folder.'''
        fn = os.path.join(self.getpath(), 'context')
        f = open(fn, 'w')
        f.write('Current-Folder: %s\n' % context)
        f.close()


    def listfolders(self):
        '''Return the names of the top-level folders.'''
        folders = []
        path = self.getpath()
        for name in os.listdir(path):
            fullname = os.path.join(path, name)
            if os.path.isdir(fullname):
                folders.append(name)
                continue

        folders.sort()
        return folders


    def listsubfolders(self, name):
        '''Return the names of the subfolders in a given folder
        (prefixed with the given folder name).'''
        fullname = os.path.join(self.path, name)
        nlinks = os.stat(fullname).st_nlink
        if nlinks <= 2:
            return []

        subfolders = []
        subnames = os.listdir(fullname)
        for subname in subnames:
            fullsubname = os.path.join(fullname, subname)
            if os.path.isdir(fullsubname):
                name_subname = os.path.join(name, subname)
                subfolders.append(name_subname)
                nlinks = nlinks - 1
                if nlinks <= 2:
                    break

            nlinks <= 2

        subfolders.sort()
        return subfolders


    def listallfolders(self):
        '''Return the names of all folders and subfolders, recursively.'''
        return self.listallsubfolders('')


    def listallsubfolders(self, name):
        '''Return the names of subfolders in a given folder, recursively.'''
        fullname = os.path.join(self.path, name)
        nlinks = os.stat(fullname).st_nlink
        if nlinks <= 2:
            return []

        subfolders = []
        subnames = os.listdir(fullname)
        for subname in subnames:
            if subname[0] == ',' or isnumeric(subname):
                continue

            fullsubname = os.path.join(fullname, subname)
            if os.path.isdir(fullsubname):
                name_subname = os.path.join(name, subname)
                subfolders.append(name_subname)
                if not os.path.islink(fullsubname):
                    subsubfolders = self.listallsubfolders(name_subname)
                    subfolders = subfolders + subsubfolders

                nlinks = nlinks - 1
                if nlinks <= 2:
                    break

            nlinks <= 2

        subfolders.sort()
        return subfolders


    def openfolder(self, name):
        '''Return a new Folder object for the named folder.'''
        return Folder(self, name)


    def makefolder(self, name):
        '''Create a new folder (or raise os.error if it cannot be created).'''
        protect = pickline(self.profile, 'Folder-Protect')
        if protect and isnumeric(protect):
            mode = int(protect, 8)
        else:
            mode = FOLDER_PROTECT
        os.mkdir(os.path.join(self.getpath(), name), mode)


    def deletefolder(self, name):
        '''Delete a folder.  This removes files in the folder but not
        subdirectories.  Raise os.error if deleting the folder itself fails.'''
        fullname = os.path.join(self.getpath(), name)
        for subname in os.listdir(fullname):
            fullsubname = os.path.join(fullname, subname)

            try:
                os.unlink(fullsubname)
            continue
            except os.error:
                self.error('%s not deleted, continuing...' % fullsubname)
                continue



        os.rmdir(fullname)


numericprog = re.compile('^[1-9][0-9]*$')

def isnumeric(str):
    return numericprog.match(str) is not None


class Folder:
    '''Class representing a particular folder.'''

    def __init__(self, mh, name):
        '''Constructor.'''
        self.mh = mh
        self.name = name
        if not os.path.isdir(self.getfullname()):
            raise Error, 'no folder %s' % name



    def __repr__(self):
        '''String representation.'''
        return 'Folder(%r, %r)' % (self.mh, self.name)


    def error(self, *args):
        '''Error message handler.'''
        self.mh.error(*args)


    def getfullname(self):
        '''Return the full pathname of the folder.'''
        return os.path.join(self.mh.path, self.name)


    def getsequencesfilename(self):
        """Return the full pathname of the folder's sequences file."""
        return os.path.join(self.getfullname(), MH_SEQUENCES)


    def getmessagefilename(self, n):
        '''Return the full pathname of a message in the folder.'''
        return os.path.join(self.getfullname(), str(n))


    def listsubfolders(self):
        '''Return list of direct subfolders.'''
        return self.mh.listsubfolders(self.name)


    def listallsubfolders(self):
        '''Return list of all subfolders.'''
        return self.mh.listallsubfolders(self.name)


    def listmessages(self):
        '''Return the list of messages currently present in the folder.
        As a side effect, set self.last to the last message (or 0).'''
        messages = []
        match = numericprog.match
        append = messages.append
        for name in os.listdir(self.getfullname()):
            if match(name):
                append(name)
                continue

        messages = map(int, messages)
        messages.sort()
        if messages:
            self.last = messages[-1]
        else:
            self.last = 0
        return messages


    def getsequences(self):
        '''Return the set of sequences for the folder.'''
        sequences = { }
        fullname = self.getsequencesfilename()

        try:
            f = open(fullname, 'r')
        except IOError:
            return sequences

        while None:
            line = f.readline()
            if not line:
                break

            fields = line.split(':')
            if len(fields) != 2:
                self.error('bad sequence in %s: %s' % (fullname, line.strip()))

            key = fields[0].strip()
            value = IntSet(fields[1].strip(), ' ').tolist()
            sequences[key] = value
            continue
            return sequences


    def putsequences(self, sequences):
        '''Write the set of sequences back to the folder.'''
        fullname = self.getsequencesfilename()
        f = None
        for key, seq in sequences.iteritems():
            s = IntSet('', ' ')
            s.fromlist(seq)
            if not f:
                f = open(fullname, 'w')

            f.write('%s: %s\n' % (key, s.tostring()))

        if not f:

            try:
                os.unlink(fullname)
            except os.error:
                pass
            except:
                None<EXCEPTION MATCH>os.error


        None<EXCEPTION MATCH>os.error
        f.close()


    def getcurrent(self):
        '''Return the current message.  Raise Error when there is none.'''
        seqs = self.getsequences()

        try:
            return max(seqs['cur'])
        except (ValueError, KeyError):
            raise Error, 'no cur message'



    def setcurrent(self, n):
        '''Set the current message.'''
        updateline(self.getsequencesfilename(), 'cur', str(n), 0)


    def parsesequence(self, seq):
        '''Parse an MH sequence specification into a message list.
        Attempt to mimic mh-sequence(5) as close as possible.
        Also attempt to mimic observed behavior regarding which
        conditions cause which error messages.'''
        all = self.listmessages()
        if not all:
            raise Error, 'no messages in %s' % self.name

        if seq == 'all':
            return all

        i = seq.find(':')
        if i >= 0:
            head = seq[:i]
            dir = ''
            tail = seq[i + 1:]
            if tail[:1] in '-+':
                dir = tail[:1]
                tail = tail[1:]

            if not isnumeric(tail):
                raise Error, 'bad message list %s' % seq


            try:
                count = int(tail)
            except (ValueError, OverflowError):
                count = len(all)


            try:
                anchor = self._parseindex(head, all)
            except Error:
                msg = None
                seqs = self.getsequences()
                if head not in seqs:
                    if not msg:
                        msg = 'bad message list %s' % seq

                    raise Error, msg, sys.exc_info()[2]

                msgs = seqs[head]
                if not msgs:
                    raise Error, 'sequence %s empty' % head

                if dir == '-':
                    return msgs[-count:]
                else:
                    return msgs[:count]
            except:
                dir == '-'

            if not dir:
                if head in ('prev', 'last'):
                    dir = '-'


            if dir == '-':
                i = bisect(all, anchor)
                return all[max(0, i - count):i]
            else:
                i = bisect(all, anchor - 1)
                return all[i:i + count]

        i = seq.find('-')
        if i >= 0:
            begin = self._parseindex(seq[:i], all)
            end = self._parseindex(seq[i + 1:], all)
            i = bisect(all, begin - 1)
            j = bisect(all, end)
            r = all[i:j]
            if not r:
                raise Error, 'bad message list %s' % seq

            return r


        try:
            n = self._parseindex(seq, all)
        except Error:
            msg = None
            seqs = self.getsequences()
            if seq not in seqs:
                if not msg:
                    msg = 'bad message list %s' % seq

                raise Error, msg

            return seqs[seq]

        if n not in all:
            if isnumeric(seq):
                raise Error, "message %d doesn't exist" % n
            else:
                raise Error, 'no %s message' % seq
        else:
            return [
                n]


    def _parseindex(self, seq, all):
        '''Internal: parse a message number (or cur, first, etc.).'''
        if isnumeric(seq):

            try:
                return int(seq)
            except (OverflowError, ValueError):
                return sys.maxint
            except:
                None<EXCEPTION MATCH>(OverflowError, ValueError)


        None<EXCEPTION MATCH>(OverflowError, ValueError)
        if seq in ('cur', '.'):
            return self.getcurrent()

        if seq == 'first':
            return all[0]

        if seq == 'last':
            return all[-1]

        if seq == 'next':
            n = self.getcurrent()
            i = bisect(all, n)

            try:
                return all[i]
            except IndexError:
                raise Error, 'no next message'
            except:
                None<EXCEPTION MATCH>IndexError


        None<EXCEPTION MATCH>IndexError
        if seq == 'prev':
            n = self.getcurrent()
            i = bisect(all, n - 1)
            if i == 0:
                raise Error, 'no prev message'


            try:
                return all[i - 1]
            except IndexError:
                raise Error, 'no prev message'
            except:
                None<EXCEPTION MATCH>IndexError


        None<EXCEPTION MATCH>IndexError
        raise Error, None


    def openmessage(self, n):
        '''Open a message -- returns a Message object.'''
        return Message(self, n)


    def removemessages(self, list):
        '''Remove one or more messages -- may raise os.error.'''
        errors = []
        deleted = []
        for n in list:
            path = self.getmessagefilename(n)
            commapath = self.getmessagefilename(',' + str(n))

            try:
                os.unlink(commapath)
            except os.error:
                pass


            try:
                os.rename(path, commapath)
            except os.error:
                msg = None
                errors.append(msg)
                continue

            deleted.append(n)

        if deleted:
            self.removefromallsequences(deleted)

        if errors:
            if len(errors) == 1:
                raise os.error, errors[0]
            else:
                raise os.error, ('multiple errors:', errors)



    def refilemessages(self, list, tofolder, keepsequences = 0):
        """Refile one or more messages -- may raise os.error.
        'tofolder' is an open folder object."""
        errors = []
        refiled = { }
        for n in list:
            ton = tofolder.getlast() + 1
            path = self.getmessagefilename(n)
            topath = tofolder.getmessagefilename(ton)

            try:
                os.rename(path, topath)
            except os.error:

                try:
                    shutil.copy2(path, topath)
                    os.unlink(path)
                except (IOError, os.error):
                    msg = None
                    errors.append(msg)

                    try:
                        os.unlink(topath)
                    continue
                    except os.error:
                        continue


                except:
                    None<EXCEPTION MATCH>(IOError, os.error)


                None<EXCEPTION MATCH>(IOError, os.error)

            tofolder.setlast(ton)
            refiled[n] = ton

        if refiled:
            if keepsequences:
                tofolder._copysequences(self, refiled.items())

            self.removefromallsequences(refiled.keys())

        if errors:
            if len(errors) == 1:
                raise os.error, errors[0]
            else:
                raise os.error, ('multiple errors:', errors)



    def _copysequences(self, fromfolder, refileditems):
        '''Helper for refilemessages() to copy sequences.'''
        fromsequences = fromfolder.getsequences()
        tosequences = self.getsequences()
        changed = 0
        for name, seq in fromsequences.items():

            try:
                toseq = tosequences[name]
                new = 0
            except KeyError:
                toseq = []
                new = 1

            for fromn, ton in refileditems:
                if fromn in seq:
                    toseq.append(ton)
                    changed = 1
                    continue

            if new and toseq:
                tosequences[name] = toseq
                continue

        if changed:
            self.putsequences(tosequences)



    def movemessage(self, n, tofolder, ton):
        '''Move one message over a specific destination message,
        which may or may not already exist.'''
        path = self.getmessagefilename(n)
        f = open(path)
        f.close()
        del f
        topath = tofolder.getmessagefilename(ton)
        backuptopath = tofolder.getmessagefilename(',%d' % ton)

        try:
            os.rename(topath, backuptopath)
        except os.error:
            pass


        try:
            os.rename(path, topath)
        except os.error:
            ok = 0

            try:
                tofolder.setlast(None)
                shutil.copy2(path, topath)
                ok = 1
            finally:
                if not ok:

                    try:
                        os.unlink(topath)
                    except os.error:
                        pass
                    except:
                        None<EXCEPTION MATCH>os.error



            os.unlink(path)

        self.removefromallsequences([
            n])


    def copymessage(self, n, tofolder, ton):
        '''Copy one message over a specific destination message,
        which may or may not already exist.'''
        path = self.getmessagefilename(n)
        f = open(path)
        f.close()
        del f
        topath = tofolder.getmessagefilename(ton)
        backuptopath = tofolder.getmessagefilename(',%d' % ton)

        try:
            os.rename(topath, backuptopath)
        except os.error:
            pass

        ok = 0

        try:
            tofolder.setlast(None)
            shutil.copy2(path, topath)
            ok = 1
        finally:
            if not ok:

                try:
                    os.unlink(topath)
                except os.error:
                    pass
                except:
                    None<EXCEPTION MATCH>os.error





    def createmessage(self, n, txt):
        '''Create a message, with text from the open file txt.'''
        path = self.getmessagefilename(n)
        backuppath = self.getmessagefilename(',%d' % n)

        try:
            os.rename(path, backuppath)
        except os.error:
            pass

        ok = 0
        BUFSIZE = 16384

        try:
            f = open(path, 'w')
            while None:
                buf = txt.read(BUFSIZE)
                if not buf:
                    break

                continue
                f.close()
                ok = 1
            if not ok:

                try:
                    os.unlink(path)
                except os.error:
                    pass
                except:
                    None<EXCEPTION MATCH>os.error


            return None



    def removefromallsequences(self, list):
        """Remove one or more messages from all sequences (including last)
        -- but not from 'cur'!!!"""
        if hasattr(self, 'last') and self.last in list:
            del self.last

        sequences = self.getsequences()
        changed = 0
        for name, seq in sequences.items():
            if name == 'cur':
                continue

            for n in list:
                if n in seq:
                    seq.remove(n)
                    changed = 1
                    if not seq:
                        del sequences[name]

                seq


        if changed:
            self.putsequences(sequences)



    def getlast(self):
        '''Return the last message number.'''
        if not hasattr(self, 'last'):
            self.listmessages()

        return self.last


    def setlast(self, last):
        '''Set the last message number.'''
        if last is None:
            if hasattr(self, 'last'):
                del self.last

        else:
            self.last = last



class Message(mimetools.Message):

    def __init__(self, f, n, fp = None):
        '''Constructor.'''
        self.folder = f
        self.number = n
        if fp is None:
            path = f.getmessagefilename(n)
            fp = open(path, 'r')

        mimetools.Message.__init__(self, fp)


    def __repr__(self):
        '''String representation.'''
        return 'Message(%s, %s)' % (repr(self.folder), self.number)


    def getheadertext(self, pred = None):
        """Return the message's header text as a string.  If an
        argument is specified, it is used as a filter predicate to
        decide which headers to return (its argument is the header
        name converted to lower case)."""
        if pred is None:
            return ''.join(self.headers)

        headers = []
        hit = 0
        for line in self.headers:
            if not line[0].isspace():
                i = line.find(':')
                if i > 0:
                    hit = pred(line[:i].lower())


            if hit:
                headers.append(line)
                continue

        return ''.join(headers)


    def getbodytext(self, decode = 1):
        """Return the message's body text as string.  This undoes a
        Content-Transfer-Encoding, but does not interpret other MIME
        features (e.g. multipart messages).  To suppress decoding,
        pass 0 as an argument."""
        self.fp.seek(self.startofbody)
        encoding = self.getencoding()
        if not decode or encoding in ('', '7bit', '8bit', 'binary'):
            return self.fp.read()


        try:
            StringIO = StringIO
            import cStringIO
        except ImportError:
            StringIO = StringIO
            import StringIO

        output = StringIO()
        mimetools.decode(self.fp, output, encoding)
        return output.getvalue()


    def getbodyparts(self):
        """Only for multipart messages: return the message's body as a
        list of SubMessage objects.  Each submessage object behaves
        (almost) as a Message object."""
        if self.getmaintype() != 'multipart':
            raise Error, 'Content-Type is not multipart/*'

        bdry = self.getparam('boundary')
        if not bdry:
            raise Error, 'multipart/* without boundary param'

        self.fp.seek(self.startofbody)
        mf = multifile.MultiFile(self.fp)
        mf.push(bdry)
        parts = []
        while mf.next():
            n = '%s.%r' % (self.number, 1 + len(parts))
            part = SubMessage(self.folder, n, mf)
            parts.append(part)
        mf.pop()
        return parts


    def getbody(self):
        '''Return body, either a string or a list of messages.'''
        if self.getmaintype() == 'multipart':
            return self.getbodyparts()
        else:
            return self.getbodytext()



class SubMessage(Message):

    def __init__(self, f, n, fp):
        '''Constructor.'''
        Message.__init__(self, f, n, fp)
        if self.getmaintype() == 'multipart':
            self.body = Message.getbodyparts(self)
        else:
            self.body = Message.getbodytext(self)
        self.bodyencoded = Message.getbodytext(self, decode = 0)


    def __repr__(self):
        '''String representation.'''
        f = self.folder
        n = self.number
        fp = self.fp
        return 'SubMessage(%s, %s, %s)' % (f, n, fp)


    def getbodytext(self, decode = 1):
        if not decode:
            return self.bodyencoded

        if type(self.body) == type(''):
            return self.body



    def getbodyparts(self):
        if type(self.body) == type([]):
            return self.body



    def getbody(self):
        return self.body



class IntSet:
    """Class implementing sets of integers.

    This is an efficient representation for sets consisting of several
    continuous ranges, e.g. 1-100,200-400,402-1000 is represented
    internally as a list of three pairs: [(1,100), (200,400),
    (402,1000)].  The internal representation is always kept normalized.

    The constructor has up to three arguments:
    - the string used to initialize the set (default ''),
    - the separator between ranges (default ',')
    - the separator between begin and end of a range (default '-')
    The separators must be strings (not regexprs) and should be different.

    The tostring() function yields a string that can be passed to another
    IntSet constructor; __repr__() is a valid IntSet constructor itself.
    """

    def __init__(self, data = None, sep = ',', rng = '-'):
        self.pairs = []
        self.sep = sep
        self.rng = rng
        if data:
            self.fromstring(data)



    def reset(self):
        self.pairs = []


    def __cmp__(self, other):
        return cmp(self.pairs, other.pairs)


    def __hash__(self):
        return hash(self.pairs)


    def __repr__(self):
        return 'IntSet(%r, %r, %r)' % (self.tostring(), self.sep, self.rng)


    def normalize(self):
        self.pairs.sort()
        i = 1
        while i < len(self.pairs):
            (alo, ahi) = self.pairs[i - 1]
            (blo, bhi) = self.pairs[i]
            if ahi >= blo - 1:
                self.pairs[i - 1:i + 1] = [
                    (alo, max(ahi, bhi))]
                continue
            i = i + 1


    def tostring(self):
        s = ''
        for lo, hi in self.pairs:
            if lo == hi:
                t = repr(lo)
            else:
                t = repr(lo) + self.rng + repr(hi)
            if s:
                s = s + self.sep + t
                continue
            s = t

        return s


    def tolist(self):
        l = []
        for lo, hi in self.pairs:
            m = range(lo, hi + 1)
            l = l + m

        return l


    def fromlist(self, list):
        for i in list:
            self.append(i)



    def clone(self):
        new = IntSet()
        new.pairs = self.pairs[:]
        return new


    def min(self):
        return self.pairs[0][0]


    def max(self):
        return self.pairs[-1][-1]


    def contains(self, x):
        for lo, hi in self.pairs:
            if x <= x:
                pass
            elif x <= hi:
                return True
                continue

        return False


    def append(self, x):
        for i in range(len(self.pairs)):
            (lo, hi) = self.pairs[i]
            if x < lo:
                if x + 1 == lo:
                    self.pairs[i] = (x, hi)
                else:
                    self.pairs.insert(i, (x, x))
                if i > 0 and x - 1 == self.pairs[i - 1][1]:
                    self.pairs[i - 1:i + 1] = [
                        (self.pairs[i - 1][0], self.pairs[i][1])]

                return None

            if x <= hi:
                return None
                continue

        i = len(self.pairs) - 1
        if i >= 0:
            (lo, hi) = self.pairs[i]
            if x - 1 == hi:
                self.pairs[i] = (lo, x)
                return None


        self.pairs.append((x, x))


    def addpair(self, xlo, xhi):
        if xlo > xhi:
            return None

        self.pairs.append((xlo, xhi))
        self.normalize()


    def fromstring(self, data):
        new = []
        for part in data.split(self.sep):
            list = []
            for subp in part.split(self.rng):
                s = subp.strip()
                list.append(int(s))

            if len(list) == 1:
                new.append((list[0], list[0]))
                continue
            if len(list) == 2 and list[0] <= list[1]:
                new.append((list[0], list[1]))
                continue
            raise ValueError, 'bad data passed to IntSet'

        self.pairs = self.pairs + new
        self.normalize()



def pickline(file, key, casefold = 1):

    try:
        f = open(file, 'r')
    except IOError:
        return None

    pat = re.escape(key) + ':'
    if casefold:
        pass
    prog = re.compile(pat, re.IGNORECASE)
    while None:
        line = f.readline()
        if not line:
            break

        if prog.match(line):
            text = line[len(key) + 1:]
            while None:
                line = f.readline()
                if not line or not line[0].isspace():
                    break

                text = text + line
                continue
                return text.strip()
                continue
                continue
                return None


def updateline(file, key, value, casefold = 1):

    try:
        f = open(file, 'r')
        lines = f.readlines()
        f.close()
    except IOError:
        lines = []

    pat = re.escape(key) + ':(.*)\n'
    if casefold:
        pass
    prog = re.compile(pat, re.IGNORECASE)
    if value is None:
        newline = None
    else:
        newline = '%s: %s\n' % (key, value)
    for i in range(len(lines)):
        line = lines[i]
        if prog.match(line):
            if newline is None:
                del lines[i]
            else:
                lines[i] = newline
            break
            continue
    elif newline is not None:
        lines.append(newline)

    tempfile = file + '~'
    f = open(tempfile, 'w')
    for line in lines:
        f.write(line)

    f.close()
    os.rename(tempfile, file)


def test():
    global mh, f
    os.system('rm -rf $HOME/Mail/@test')
    mh = MH()

    def do(s):
        print s
        print eval(s)

    do('mh.listfolders()')
    do('mh.listallfolders()')
    testfolders = [
        '@test',
        '@test/test1',
        '@test/test2',
        '@test/test1/test11',
        '@test/test1/test12',
        '@test/test1/test11/test111']
    for t in testfolders:
        do('mh.makefolder(%r)' % (t,))

    do("mh.listsubfolders('@test')")
    do("mh.listallsubfolders('@test')")
    f = mh.openfolder('@test')
    do('f.listsubfolders()')
    do('f.listallsubfolders()')
    do('f.getsequences()')
    seqs = f.getsequences()
    seqs['foo'] = IntSet('1-10 12-20', ' ').tolist()
    print seqs
    f.putsequences(seqs)
    do('f.getsequences()')
    for t in reversed(testfolders):
        do('mh.deletefolder(%r)' % (t,))

    do('mh.getcontext()')
    context = mh.getcontext()
    f = mh.openfolder(context)
    do('f.getcurrent()')
    for seq in ('first', 'last', 'cur', '.', 'prev', 'next', 'first:3', 'last:3', 'cur:3', 'cur:-3', 'prev:3', 'next:3', '1:3', '1:-3', '100:3', '100:-3', '10000:3', '10000:-3', 'all'):

        try:
            do('f.parsesequence(%r)' % (seq,))
        except Error:
            msg = None
            print 'Error:', msg

        stuff = os.popen('pick %r 2>/dev/null' % (seq,)).read()
        list = map(int, stuff.split())
        print list, '<-- pick'

    do('f.listmessages()')

if __name__ == '__main__':
    test()