rfc822.py

python s60 1.4.5版本的源代码

        self.gotonext()
        returnlist = []

        if self.pos >= len(self.field):
            if plist:
                returnlist = [(' '.join(self.commentlist), plist[0])]

        elif self.field[self.pos] in '.@':
            self.pos = oldpos
            self.commentlist = oldcl
            addrspec = self.getaddrspec()
            returnlist = [(' '.join(self.commentlist), addrspec)]

        elif self.field[self.pos] == ':':
            returnlist = []

            fieldlen = len(self.field)
            self.pos = self.pos + 1
            while self.pos < len(self.field):
                self.gotonext()
                if self.pos < fieldlen and self.field[self.pos] == ';':
                    self.pos = self.pos + 1
                    break
                returnlist = returnlist + self.getaddress()

        elif self.field[self.pos] == '<':
            routeaddr = self.getrouteaddr()

            if self.commentlist:
                returnlist = [(' '.join(plist) + ' (' + \
                         ' '.join(self.commentlist) + ')', routeaddr)]
            else: returnlist = [(' '.join(plist), routeaddr)]

        else:
            if plist:
                returnlist = [(' '.join(self.commentlist), plist[0])]
            elif self.field[self.pos] in self.specials:
                self.pos = self.pos + 1

        self.gotonext()
        if self.pos < len(self.field) and self.field[self.pos] == ',':
            self.pos = self.pos + 1
        return returnlist

    def getrouteaddr(self):
        if self.field[self.pos] != '<':
            return

        expectroute = 0
        self.pos = self.pos + 1
        self.gotonext()
        adlist = ""
        while self.pos < len(self.field):
            if expectroute:
                self.getdomain()
                expectroute = 0
            elif self.field[self.pos] == '>':
                self.pos = self.pos + 1
                break
            elif self.field[self.pos] == '@':
                self.pos = self.pos + 1
                expectroute = 1
            elif self.field[self.pos] == ':':
                self.pos = self.pos + 1
            else:
                adlist = self.getaddrspec()
                self.pos = self.pos + 1
                break
            self.gotonext()

        return adlist

    def getaddrspec(self):
        aslist = []

        self.gotonext()
        while self.pos < len(self.field):
            if self.field[self.pos] == '.':
                aslist.append('.')
                self.pos = self.pos + 1
            elif self.field[self.pos] == '"':
                aslist.append('"%s"' % self.getquote())
            elif self.field[self.pos] in self.atomends:
                break
            else: aslist.append(self.getatom())
            self.gotonext()

        if self.pos >= len(self.field) or self.field[self.pos] != '@':
            return ''.join(aslist)

        aslist.append('@')
        self.pos = self.pos + 1
        self.gotonext()
        return ''.join(aslist) + self.getdomain()

    def getdomain(self):
        sdlist = []
        while self.pos < len(self.field):
            if self.field[self.pos] in self.LWS:
                self.pos = self.pos + 1
            elif self.field[self.pos] == '(':
                self.commentlist.append(self.getcomment())
            elif self.field[self.pos] == '[':
                sdlist.append(self.getdomainliteral())
            elif self.field[self.pos] == '.':
                self.pos = self.pos + 1
                sdlist.append('.')
            elif self.field[self.pos] in self.atomends:
                break
            else: sdlist.append(self.getatom())
        return ''.join(sdlist)

    def getdelimited(self, beginchar, endchars, allowcomments = 1):
        if self.field[self.pos] != beginchar:
            return ''

        slist = ['']
        quote = 0
        self.pos = self.pos + 1
        while self.pos < len(self.field):
            if quote == 1:
                slist.append(self.field[self.pos])
                quote = 0
            elif self.field[self.pos] in endchars:
                self.pos = self.pos + 1
                break
            elif allowcomments and self.field[self.pos] == '(':
                slist.append(self.getcomment())
            elif self.field[self.pos] == '\\':
                quote = 1
            else:
                slist.append(self.field[self.pos])
            self.pos = self.pos + 1

        return ''.join(slist)

    def getquote(self):
        return self.getdelimited('"', '"\r', 0)

    def getcomment(self):
        return self.getdelimited('(', ')\r', 1)

    def getdomainliteral(self):
        return '[%s]' % self.getdelimited('[', ']\r', 0)

    def getatom(self, atomends=None):
        atomlist = ['']
        if atomends is None:
            atomends = self.atomends

        while self.pos < len(self.field):
            if self.field[self.pos] in atomends:
                break
            else: atomlist.append(self.field[self.pos])
            self.pos = self.pos + 1

        return ''.join(atomlist)

    def getphraselist(self):
        plist = []

        while self.pos < len(self.field):
            if self.field[self.pos] in self.LWS:
                self.pos = self.pos + 1
            elif self.field[self.pos] == '"':
                plist.append(self.getquote())
            elif self.field[self.pos] == '(':
                self.commentlist.append(self.getcomment())
            elif self.field[self.pos] in self.phraseends:
                break
            else:
                plist.append(self.getatom(self.phraseends))

        return plist

class AddressList(AddrlistClass):
    def __init__(self, field):
        AddrlistClass.__init__(self, field)
        if field:
            self.addresslist = self.getaddrlist()
        else:
            self.addresslist = []

    def __len__(self):
        return len(self.addresslist)

    def __str__(self):
        return ", ".join(map(dump_address_pair, self.addresslist))

    def __add__(self, other):
        newaddr = AddressList(None)
        newaddr.addresslist = self.addresslist[:]
        for x in other.addresslist:
            if not x in self.addresslist:
                newaddr.addresslist.append(x)
        return newaddr

    def __iadd__(self, other):
        for x in other.addresslist:
            if not x in self.addresslist:
                self.addresslist.append(x)
        return self

    def __sub__(self, other):
        newaddr = AddressList(None)
        for x in self.addresslist:
            if not x in other.addresslist:
                newaddr.addresslist.append(x)
        return newaddr

    def __isub__(self, other):
        for x in other.addresslist:
            if x in self.addresslist:
                self.addresslist.remove(x)
        return self

    def __getitem__(self, index):
        return self.addresslist[index]

def dump_address_pair(pair):
    if pair[0]:
        return '"' + pair[0] + '" <' + pair[1] + '>'
    else:
        return pair[1]

# Parse a date field

_monthnames = ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul',
               'aug', 'sep', 'oct', 'nov', 'dec',
               'january', 'february', 'march', 'april', 'may', 'june', 'july',
               'august', 'september', 'october', 'november', 'december']
_daynames = ['mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun']

_timezones = {'UT':0, 'UTC':0, 'GMT':0, 'Z':0,
              'AST': -400, 'ADT': -300,  # Atlantic (used in Canada)
              'EST': -500, 'EDT': -400,  # Eastern
              'CST': -600, 'CDT': -500,  # Central
              'MST': -700, 'MDT': -600,  # Mountain
              'PST': -800, 'PDT': -700   # Pacific
              }


def parsedate_tz(data):
    if not data:
        return None
    data = data.split()
    if data[0][-1] in (',', '.') or data[0].lower() in _daynames:
        del data[0]
    if len(data) == 3: # RFC 850 date, deprecated
        stuff = data[0].split('-')
        if len(stuff) == 3:
            data = stuff + data[1:]
    if len(data) == 4:
        s = data[3]
        i = s.find('+')
        if i > 0:
            data[3:] = [s[:i], s[i+1:]]
        else:
            data.append('') # Dummy tz
    if len(data) < 5:
        return None
    data = data[:5]
    [dd, mm, yy, tm, tz] = data
    mm = mm.lower()
    if not mm in _monthnames:
        dd, mm = mm, dd.lower()
        if not mm in _monthnames:
            return None
    mm = _monthnames.index(mm)+1
    if mm > 12: mm = mm - 12
    if dd[-1] == ',':
        dd = dd[:-1]
    i = yy.find(':')
    if i > 0:
        yy, tm = tm, yy
    if yy[-1] == ',':
        yy = yy[:-1]
    if not yy[0].isdigit():
        yy, tz = tz, yy
    if tm[-1] == ',':
        tm = tm[:-1]
    tm = tm.split(':')
    if len(tm) == 2:
        [thh, tmm] = tm
        tss = '0'
    elif len(tm) == 3:
        [thh, tmm, tss] = tm
    else:
        return None
    try:
        yy = int(yy)
        dd = int(dd)
        thh = int(thh)
        tmm = int(tmm)
        tss = int(tss)
    except ValueError:
        return None
    tzoffset = None
    tz = tz.upper()
    if _timezones.has_key(tz):
        tzoffset = _timezones[tz]
    else:
        try:
            tzoffset = int(tz)
        except ValueError:
            pass
    if tzoffset:
        if tzoffset < 0:
            tzsign = -1
            tzoffset = -tzoffset
        else:
            tzsign = 1
        tzoffset = tzsign * ( (tzoffset//100)*3600 + (tzoffset % 100)*60)
    tuple = (yy, mm, dd, thh, tmm, tss, 0, 0, 0, tzoffset)
    return tuple


def parsedate(data):
    t = parsedate_tz(data)
    if type(t) == type( () ):
        return t[:9]
    else: return t


def mktime_tz(data):
    if data[9] is None:
        return time.mktime(data[:8] + (-1,))
    else:
        t = time.mktime(data[:8] + (0,))
        return t - data[9] - time.timezone

def formatdate(timeval=None):
    if timeval is None:
        timeval = time.time()
    timeval = time.gmtime(timeval)
    return "%s, %02d %s %04d %02d:%02d:%02d GMT" % (
            ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"][timeval[6]],
            timeval[2],
            ["Jan", "Feb", "Mar", "Apr", "May", "Jun",
             "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"][timeval[1]-1],
                                timeval[0], timeval[3], timeval[4], timeval[5])

if __name__ == '__main__':
    pass