The usual...
diff --git a/Lib/dos-8x3/rfc822-n.py b/Lib/dos-8x3/rfc822-n.py
new file mode 100644
index 0000000..ef7ab43
--- /dev/null
+++ b/Lib/dos-8x3/rfc822-n.py
@@ -0,0 +1,946 @@
+"""RFC-822 message manipulation class.
+
+XXX This is only a very rough sketch of a full RFC-822 parser;
+in particular the tokenizing of addresses does not adhere to all the
+quoting rules.
+
+Directions for use:
+
+To create a Message object: first open a file, e.g.:
+ fp = open(file, 'r')
+You can use any other legal way of getting an open file object, e.g. use
+sys.stdin or call os.popen().
+Then pass the open file object to the Message() constructor:
+ m = Message(fp)
+
+This class can work with any input object that supports a readline
+method. If the input object has seek and tell capability, the
+rewindbody method will work; also illegal lines will be pushed back
+onto the input stream. If the input object lacks seek but has an
+`unread' method that can push back a line of input, Message will use
+that to push back illegal lines. Thus this class can be used to parse
+messages coming from a buffered stream.
+
+The optional `seekable' argument is provided as a workaround for
+certain stdio libraries in which tell() discards buffered data before
+discovering that the lseek() system call doesn't work. For maximum
+portability, you should set the seekable argument to zero to prevent
+that initial \code{tell} when passing in an unseekable object such as
+a a file object created from a socket object. If it is 1 on entry --
+which it is by default -- the tell() method of the open file object is
+called once; if this raises an exception, seekable is reset to 0. For
+other nonzero values of seekable, this test is not made.
+
+To get the text of a particular header there are several methods:
+ str = m.getheader(name)
+ str = m.getrawheader(name)
+where name is the name of the header, e.g. 'Subject'.
+The difference is that getheader() strips the leading and trailing
+whitespace, while getrawheader() doesn't. Both functions retain
+embedded whitespace (including newlines) exactly as they are
+specified in the header, and leave the case of the text unchanged.
+
+For addresses and address lists there are functions
+ realname, mailaddress = m.getaddr(name) and
+ list = m.getaddrlist(name)
+where the latter returns a list of (realname, mailaddr) tuples.
+
+There is also a method
+ time = m.getdate(name)
+which parses a Date-like field and returns a time-compatible tuple,
+i.e. a tuple such as returned by time.localtime() or accepted by
+time.mktime().
+
+See the class definition for lower level access methods.
+
+There are also some utility functions here.
+"""
+# Cleanup and extensions by Eric S. Raymond <esr@thyrsus.com>
+
+import string
+import time
+
+
+_blanklines = ('\r\n', '\n') # Optimization for islast()
+
+
+class Message:
+ """Represents a single RFC-822-compliant message."""
+
+ def __init__(self, fp, seekable = 1):
+ """Initialize the class instance and read the headers."""
+ if seekable == 1:
+ # Exercise tell() to make sure it works
+ # (and then assume seek() works, too)
+ try:
+ fp.tell()
+ except:
+ seekable = 0
+ else:
+ seekable = 1
+ self.fp = fp
+ self.seekable = seekable
+ self.startofheaders = None
+ self.startofbody = None
+ #
+ if self.seekable:
+ try:
+ self.startofheaders = self.fp.tell()
+ except IOError:
+ self.seekable = 0
+ #
+ self.readheaders()
+ #
+ if self.seekable:
+ try:
+ self.startofbody = self.fp.tell()
+ except IOError:
+ self.seekable = 0
+
+ def rewindbody(self):
+ """Rewind the file to the start of the body (if seekable)."""
+ if not self.seekable:
+ raise IOError, "unseekable file"
+ self.fp.seek(self.startofbody)
+
+ def readheaders(self):
+ """Read header lines.
+
+ Read header lines up to the entirely blank line that
+ terminates them. The (normally blank) line that ends the
+ headers is skipped, but not included in the returned list.
+ If a non-header line ends the headers, (which is an error),
+ an attempt is made to backspace over it; it is never
+ included in the returned list.
+
+ The variable self.status is set to the empty string if all
+ went well, otherwise it is an error message.
+ The variable self.headers is a completely uninterpreted list
+ of lines contained in the header (so printing them will
+ reproduce the header exactly as it appears in the file).
+ """
+ self.dict = {}
+ self.__gamh_cache = {}
+ self.__gh_cache = {}
+ self.unixfrom = ''
+ self.headers = list = []
+ self.status = ''
+ headerseen = ""
+ firstline = 1
+ startofline = unread = tell = None
+ if hasattr(self.fp, 'unread'):
+ unread = self.fp.unread
+ elif self.seekable:
+ tell = self.fp.tell
+ while 1:
+ if tell:
+ startofline = tell()
+ line = self.fp.readline()
+ if not line:
+ self.status = 'EOF in headers'
+ break
+ # Skip unix From name time lines
+ if firstline and line[:5] == 'From ':
+ self.unixfrom = self.unixfrom + line
+ continue
+ firstline = 0
+ if headerseen and line[0] in ' \t':
+ # It's a continuation line.
+ list.append(line)
+ self.__gamh_cache[headerseen].append(line)
+ x = string.lstrip(
+ "%s\n %s" % (self.dict[headerseen], string.strip(line)))
+ self.dict[headerseen] = x
+ self.__gh_cache[headerseen][-1] = x
+ continue
+ elif self.iscomment(line):
+ # It's a comment. Ignore it.
+ continue
+ elif self.islast(line):
+ # Note! No pushback here! The delimiter line gets eaten.
+ break
+ headerseen = self.isheader(line)
+ if headerseen:
+ # It's a legal header line, save it.
+ list.append(line)
+ l = self.__gamh_cache.get(headerseen)
+ if not l:
+ self.__gamh_cache[headerseen] = l = []
+ l.append(line)
+ x = string.strip(line[len(headerseen)+1:])
+ self.dict[headerseen] = x
+ l = self.__gh_cache.get(headerseen)
+ if not l:
+ self.__gh_cache[headerseen] = l = []
+ l.append(x)
+ continue
+ else:
+ # It's not a header line; throw it back and stop here.
+ if not self.dict:
+ self.status = 'No headers'
+ else:
+ self.status = 'Non-header line where header expected'
+ # Try to undo the read.
+ if unread:
+ unread(line)
+ elif tell:
+ self.fp.seek(startofline)
+ else:
+ self.status = self.status + '; bad seek'
+ break
+
+ def isheader(self, line):
+ """Determine whether a given line is a legal header.
+
+ This method should return the header name, suitably canonicalized.
+ You may override this method in order to use Message parsing
+ on tagged data in RFC822-like formats with special header formats.
+ """
+ i = string.find(line, ':')
+ if i > 0:
+ return string.lower(line[:i])
+ else:
+ return None
+
+ def islast(self, line):
+ """Determine whether a line is a legal end of RFC-822 headers.
+
+ You may override this method if your application wants
+ to bend the rules, e.g. to strip trailing whitespace,
+ or to recognise MH template separators ('--------').
+ For convenience (e.g. for code reading from sockets) a
+ line consisting of \r\n also matches.
+ """
+ return line in _blanklines
+
+ def iscomment(self, line):
+ """Determine whether a line should be skipped entirely.
+
+ You may override this method in order to use Message parsing
+ on tagged data in RFC822-like formats that support embedded
+ comments or free-text data.
+ """
+ return None
+
+ def getallmatchingheaders(self, name,
+ # speed hack:
+ lower = string.lower):
+ """Find all header lines matching a given header name.
+
+ Look through the list of headers and find all lines
+ matching a given header name (and their continuation
+ lines). A list of the lines is returned, without
+ interpretation. If the header does not occur, an
+ empty list is returned. If the header occurs multiple
+ times, all occurrences are returned. Case is not
+ important in the header name.
+ """
+ r = self.__gamh_cache.get(lower(name))
+ if r:
+ return r[:]
+ return []
+
+ def getfirstmatchingheader(self, name,
+ # speed hack:
+ lower = string.lower):
+ """Get the first header line matching name.
+
+ This is similar to getallmatchingheaders, but it returns
+ only the first matching header (and its continuation
+ lines).
+ """
+ l = self.__gamh_cache.get(lower(name))
+ if not l:
+ return []
+ r = []
+ for item in l:
+ if r and item[0] not in " \t":
+ break
+ r.append(item)
+ return r
+
+ def getrawheader(self, name):
+ """A higher-level interface to getfirstmatchingheader().
+
+ Return a string containing the literal text of the
+ header but with the keyword stripped. All leading,
+ trailing and embedded whitespace is kept in the
+ string, however.
+ Return None if the header does not occur.
+ """
+
+ list = self.getfirstmatchingheader(name)
+ if not list:
+ return None
+ list[0] = list[0][len(name) + 1:]
+ return string.joinfields(list, '')
+
+ def getheader(self, name, default=None):
+ """Get the header value for a name.
+
+ This is the normal interface: it returns a stripped
+ version of the header value for a given header name,
+ or None if it doesn't exist. This uses the dictionary
+ version which finds the *last* such header.
+ """
+ try:
+ return self.dict[string.lower(name)]
+ except KeyError:
+ return default
+ get = getheader
+
+ def getheaders(self, name,
+ # speed hack:
+ lower = string.lower):
+ """Get all values for a header.
+
+ This returns a list of values for headers given more than once;
+ each value in the result list is stripped in the same way as the
+ result of getheader(). If the header is not given, return an
+ empty list.
+ """
+ r = self.__gh_cache.get(lower(name))
+ if r:
+ return r[:]
+ return []
+
+ def getaddr(self, name):
+ """Get a single address from a header, as a tuple.
+
+ An example return value:
+ ('Guido van Rossum', 'guido@cwi.nl')
+ """
+ # New, by Ben Escoto
+ alist = self.getaddrlist(name)
+ if alist:
+ return alist[0]
+ else:
+ return (None, None)
+
+ def getaddrlist(self, name):
+ """Get a list of addresses from a header.
+
+ Retrieves a list of addresses from a header, where each address is a
+ tuple as returned by getaddr(). Scans all named headers, so it works
+ properly with multiple To: or Cc: headers for example.
+
+ """
+ raw = []
+ for h in self.getallmatchingheaders(name):
+ if h[0] in ' \t':
+ raw.append(h)
+ else:
+ if raw:
+ raw.append(', ')
+ i = string.find(h, ':')
+ if i > 0:
+ addr = h[i+1:]
+ raw.append(addr)
+ alladdrs = string.join(raw, '')
+ a = AddrlistClass(alladdrs)
+ return a.getaddrlist()
+
+ def getdate(self, name):
+ """Retrieve a date field from a header.
+
+ Retrieves a date field from the named header, returning
+ a tuple compatible with time.mktime().
+ """
+ try:
+ data = self[name]
+ except KeyError:
+ return None
+ return parsedate(data)
+
+ def getdate_tz(self, name):
+ """Retrieve a date field from a header as a 10-tuple.
+
+ The first 9 elements make up a tuple compatible with
+ time.mktime(), and the 10th is the offset of the poster's
+ time zone from GMT/UTC.
+ """
+ try:
+ data = self[name]
+ except KeyError:
+ return None
+ return parsedate_tz(data)
+
+
+ # Access as a dictionary (only finds *last* header of each type):
+
+ def __len__(self):
+ """Get the number of headers in a message."""
+ return len(self.dict)
+
+ def __getitem__(self, name):
+ """Get a specific header, as from a dictionary."""
+ return self.dict[string.lower(name)]
+
+ def __setitem__(self, name, value):
+ """Set the value of a header.
+
+ Note: This is not a perfect inversion of __getitem__, because
+ any changed headers get stuck at the end of the raw-headers list
+ rather than where the altered header was.
+ """
+ del self[name] # Won't fail if it doesn't exist
+ self.dict[string.lower(name)] = value
+ text = name + ": " + value
+ lines = string.split(text, "\n")
+ for line in lines:
+ self.headers.append(line + "\n")
+
+ def __delitem__(self, name):
+ """Delete all occurrences of a specific header, if it is present."""
+ name = string.lower(name)
+ if not self.dict.has_key(name):
+ return
+ del self.dict[name]
+ name = name + ':'
+ n = len(name)
+ list = []
+ hit = 0
+ for i in range(len(self.headers)):
+ line = self.headers[i]
+ if string.lower(line[:n]) == name:
+ hit = 1
+ elif line[:1] not in string.whitespace:
+ hit = 0
+ if hit:
+ list.append(i)
+ list.reverse()
+ for i in list:
+ del self.headers[i]
+
+ def has_key(self, name):
+ """Determine whether a message contains the named header."""
+ return self.dict.has_key(string.lower(name))
+
+ def keys(self):
+ """Get all of a message's header field names."""
+ return self.dict.keys()
+
+ def values(self):
+ """Get all of a message's header field values."""
+ return self.dict.values()
+
+ def items(self):
+ """Get all of a message's headers.
+
+ Returns a list of name, value tuples.
+ """
+ return self.dict.items()
+
+ def __str__(self):
+ str = ''
+ for hdr in self.headers:
+ str = str + hdr
+ return str
+
+
+# Utility functions
+# -----------------
+
+# XXX Should fix unquote() and quote() to be really conformant.
+# XXX The inverses of the parse functions may also be useful.
+
+
+def unquote(str):
+ """Remove quotes from a string."""
+ if len(str) > 1:
+ if str[0] == '"' and str[-1:] == '"':
+ return str[1:-1]
+ if str[0] == '<' and str[-1:] == '>':
+ return str[1:-1]
+ return str
+
+
+def quote(str):
+ """Add quotes around a string."""
+ return '"%s"' % string.join(
+ string.split(
+ string.join(
+ string.split(str, '\\'),
+ '\\\\'),
+ '"'),
+ '\\"')
+
+
+def parseaddr(address):
+ """Parse an address into a (realname, mailaddr) tuple."""
+ a = AddrlistClass(address)
+ list = a.getaddrlist()
+ if not list:
+ return (None, None)
+ else:
+ return list[0]
+
+
+class AddrlistClass:
+ """Address parser class by Ben Escoto.
+
+ To understand what this class does, it helps to have a copy of
+ RFC-822 in front of you.
+
+ Note: this class interface is deprecated and may be removed in the future.
+ Use rfc822.AddressList instead.
+ """
+
+ def __init__(self, field):
+ """Initialize a new instance.
+
+ `field' is an unparsed address header field, containing
+ one or more addresses.
+ """
+ self.specials = '()<>@,:;.\"[]'
+ self.pos = 0
+ self.LWS = ' \t'
+ self.CR = '\r\n'
+ self.atomends = self.specials + self.LWS + self.CR
+ self.field = field
+ self.commentlist = []
+
+ def gotonext(self):
+ """Parse up to the start of the next address."""
+ while self.pos < len(self.field):
+ if self.field[self.pos] in self.LWS + '\n\r':
+ self.pos = self.pos + 1
+ elif self.field[self.pos] == '(':
+ self.commentlist.append(self.getcomment())
+ else: break
+
+ def getaddrlist(self):
+ """Parse all addresses.
+
+ Returns a list containing all of the addresses.
+ """
+ ad = self.getaddress()
+ if ad:
+ return ad + self.getaddrlist()
+ else: return []
+
+ def getaddress(self):
+ """Parse the next address."""
+ self.commentlist = []
+ self.gotonext()
+
+ oldpos = self.pos
+ oldcl = self.commentlist
+ plist = self.getphraselist()
+
+ self.gotonext()
+ returnlist = []
+
+ if self.pos >= len(self.field):
+ # Bad email address technically, no domain.
+ if plist:
+ returnlist = [(string.join(self.commentlist), plist[0])]
+
+ elif self.field[self.pos] in '.@':
+ # email address is just an addrspec
+ # this isn't very efficient since we start over
+ self.pos = oldpos
+ self.commentlist = oldcl
+ addrspec = self.getaddrspec()
+ returnlist = [(string.join(self.commentlist), addrspec)]
+
+ elif self.field[self.pos] == ':':
+ # address is a group
+ 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] == '<':
+ # Address is a phrase then a route addr
+ routeaddr = self.getrouteaddr()
+
+ if self.commentlist:
+ returnlist = [(string.join(plist) + ' (' + \
+ string.join(self.commentlist) + ')', routeaddr)]
+ else: returnlist = [(string.join(plist), routeaddr)]
+
+ else:
+ if plist:
+ returnlist = [(string.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):
+ """Parse a route address (Return-path value).
+
+ This method just skips all the route stuff and returns the addrspec.
+ """
+ if self.field[self.pos] != '<':
+ return
+
+ expectroute = 0
+ self.pos = self.pos + 1
+ self.gotonext()
+ adlist = None
+ 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
+ expectaddrspec = 1
+ else:
+ adlist = self.getaddrspec()
+ self.pos = self.pos + 1
+ break
+ self.gotonext()
+
+ return adlist
+
+ def getaddrspec(self):
+ """Parse an RFC-822 addr-spec."""
+ 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 string.join(aslist, '')
+
+ aslist.append('@')
+ self.pos = self.pos + 1
+ self.gotonext()
+ return string.join(aslist, '') + self.getdomain()
+
+ def getdomain(self):
+ """Get the complete domain name from an address."""
+ 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 string.join(sdlist, '')
+
+ def getdelimited(self, beginchar, endchars, allowcomments = 1):
+ """Parse a header fragment delimited by special characters.
+
+ `beginchar' is the start character for the fragment.
+ If self is not looking at an instance of `beginchar' then
+ getdelimited returns the empty string.
+
+ `endchars' is a sequence of allowable end-delimiting characters.
+ Parsing stops when one of these is encountered.
+
+ If `allowcomments' is non-zero, embedded RFC-822 comments
+ are allowed within the parsed fragment.
+ """
+ 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 string.join(slist, '')
+
+ def getquote(self):
+ """Get a quote-delimited fragment from self's field."""
+ return self.getdelimited('"', '"\r', 0)
+
+ def getcomment(self):
+ """Get a parenthesis-delimited fragment from self's field."""
+ return self.getdelimited('(', ')\r', 1)
+
+ def getdomainliteral(self):
+ """Parse an RFC-822 domain-literal."""
+ return self.getdelimited('[', ']\r', 0)
+
+ def getatom(self):
+ """Parse an RFC-822 atom."""
+ atomlist = ['']
+
+ while self.pos < len(self.field):
+ if self.field[self.pos] in self.atomends:
+ break
+ else: atomlist.append(self.field[self.pos])
+ self.pos = self.pos + 1
+
+ return string.join(atomlist, '')
+
+ def getphraselist(self):
+ """Parse a sequence of RFC-822 phrases.
+
+ A phrase is a sequence of words, which are in turn either
+ RFC-822 atoms or quoted-strings. Phrases are canonicalized
+ by squeezing all runs of continuous whitespace into one space.
+ """
+ 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.atomends:
+ break
+ else: plist.append(self.getatom())
+
+ return plist
+
+class AddressList(AddrlistClass):
+ """An AddressList encapsulates a list of parsed RFC822 addresses."""
+ 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 string.joinfields(map(dump_address_pair, self.addresslist),", ")
+
+ def __add__(self, other):
+ # Set union
+ 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 __sub__(self, other):
+ # Set difference
+ newaddr = AddressList(None)
+ for x in self.addresslist:
+ if not x in other.addresslist:
+ newaddr.addresslist.append(x)
+ return newaddr
+
+ def __getitem__(self, index):
+ # Make indexing, slices, and 'in' work
+ return self.addresslist[index]
+
+def dump_address_pair(pair):
+ """Dump a (name, address) pair in a canonicalized form."""
+ 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']
+
+# The timezone table does not include the military time zones defined
+# in RFC822, other than Z. According to RFC1123, the description in
+# RFC822 gets the signs wrong, so we can't rely on any such time
+# zones. RFC1123 recommends that numeric timezone indicators be used
+# instead of timezone names.
+
+_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):
+ """Convert a date string to a time tuple.
+
+ Accounts for military timezones.
+ """
+ data = string.split(data)
+ if data[0][-1] in (',', '.') or string.lower(data[0]) in _daynames:
+ # There's a dayname here. Skip it
+ del data[0]
+ if len(data) == 3: # RFC 850 date, deprecated
+ stuff = string.split(data[0], '-')
+ if len(stuff) == 3:
+ data = stuff + data[1:]
+ if len(data) == 4:
+ s = data[3]
+ i = string.find(s, '+')
+ 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 = string.lower(mm)
+ if not mm in _monthnames:
+ dd, mm = mm, string.lower(dd)
+ 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 = string.find(yy, ':')
+ if i > 0:
+ yy, tm = tm, yy
+ if yy[-1] == ',':
+ yy = yy[:-1]
+ if yy[0] not in string.digits:
+ yy, tz = tz, yy
+ if tm[-1] == ',':
+ tm = tm[:-1]
+ tm = string.splitfields(tm, ':')
+ if len(tm) == 2:
+ [thh, tmm] = tm
+ tss = '0'
+ elif len(tm) == 3:
+ [thh, tmm, tss] = tm
+ else:
+ return None
+ try:
+ yy = string.atoi(yy)
+ dd = string.atoi(dd)
+ thh = string.atoi(thh)
+ tmm = string.atoi(tmm)
+ tss = string.atoi(tss)
+ except string.atoi_error:
+ return None
+ tzoffset=None
+ tz=string.upper(tz)
+ if _timezones.has_key(tz):
+ tzoffset=_timezones[tz]
+ else:
+ try:
+ tzoffset=string.atoi(tz)
+ except string.atoi_error:
+ pass
+ # Convert a timezone offset into seconds ; -0500 -> -18000
+ 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):
+ """Convert a time string to a time tuple."""
+ t=parsedate_tz(data)
+ if type(t)==type( () ):
+ return t[:9]
+ else: return t
+
+
+def mktime_tz(data):
+ """Turn a 10-tuple as returned by parsedate_tz() into a UTC timestamp."""
+ if data[9] is None:
+ # No zone info, so localtime is better assumption than GMT
+ return time.mktime(data[:8] + (-1,))
+ else:
+ t = time.mktime(data[:8] + (0,))
+ return t - data[9] - time.timezone
+
+def formatdate(timeval=None):
+ """Returns time format preferred for Internet standards.
+
+ Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123
+ """
+ if timeval is None:
+ timeval = time.time()
+ return "%s" % time.strftime('%a, %d %b %Y %H:%M:%S GMT',
+ time.gmtime(timeval))
+
+
+# When used as script, run a small test program.
+# The first command line argument must be a filename containing one
+# message in RFC-822 format.
+
+if __name__ == '__main__':
+ import sys, os
+ file = os.path.join(os.environ['HOME'], 'Mail/inbox/1')
+ if sys.argv[1:]: file = sys.argv[1]
+ f = open(file, 'r')
+ m = Message(f)
+ print 'From:', m.getaddr('from')
+ print 'To:', m.getaddrlist('to')
+ print 'Subject:', m.getheader('subject')
+ print 'Date:', m.getheader('date')
+ date = m.getdate_tz('date')
+ if date:
+ print 'ParsedDate:', time.asctime(date[:-1]),
+ hhmmss = date[-1]
+ hhmm, ss = divmod(hhmmss, 60)
+ hh, mm = divmod(hhmm, 60)
+ print "%+03d%02d" % (hh, mm),
+ if ss: print ".%02d" % ss,
+ print
+ else:
+ print 'ParsedDate:', None
+ m.rewindbody()
+ n = 0
+ while f.readline():
+ n = n + 1
+ print 'Lines:', n
+ print '-'*70
+ print 'len =', len(m)
+ if m.has_key('Date'): print 'Date =', m['Date']
+ if m.has_key('X-Nonsense'): pass
+ print 'keys =', m.keys()
+ print 'values =', m.values()
+ print 'items =', m.items()