* change default line numbers for 'list' in pdb.py

* changed eval() into getattr() in cmd.py
* added dirname(), basename() and (dummy) normath() to macpath.py
* renamed nntp.py to nntplib.py
* Made string.index() compatible with strop.index()
* Make string.atoi('') raise string.atoi_error rather than ValueError
* Added dirname() and normpath() to posixpath.

1 files changed, 368 insertions, 0 deletions

diff --git a/Lib/nntplib.py b/Lib/nntplib.py
new file mode 100644
index 0000000..18fa398
--- /dev/null
+++ b/Lib/nntplib.py
@@ -0,0 +1,368 @@
+# An NNTP client class.  Based on RFC 977: Network News Transfer
+# Protocol, by Brian Kantor and Phil Lapsley.
+
+
+# Example:
+#
+# >>> from nntp import NNTP
+# >>> s = NNTP().init('charon')
+# >>> resp, count, first, last, name = s.group('nlnet.misc')
+# >>> print 'Group', name, 'has', count, 'articles, range', first, 'to', last
+# Group nlnet.misc has 525 articles, range 6960 to 7485
+# >>> resp, subs = s.xhdr('subject', first + '-' + last)
+# >>> resp = s.quit()
+# >>>
+#
+# Here 'resp' is the server response line.
+# Error responses are turned into exceptions.
+#
+# To post an article from a file:
+# >>> f = open(filename, 'r') # file containing article, including header
+# >>> resp = s.post(f)
+# >>>
+#
+# For descriptions of all methods, read the comments in the code below.
+# Note that all arguments and return values representing article numbers
+# are strings, not numbers, since they are rarely used for calculations.
+
+
+# Imports
+import regex
+import socket
+import string
+
+
+# Exception raiseds when an error or invalid response is received
+
+error_reply = 'nntp.error_reply'	# unexpected [123]xx reply
+error_function = 'nntp.error_function'	# 4xx errors
+error_form = 'nntp.error_form'		# 5xx errors
+error_protocol = 'nntp.error_protocol'	# response does not begin with [1-5]
+
+
+# Standard port used by NNTP servers
+NNTP_PORT = 119
+
+
+# Response numbers that are followed by additional text (e.g. article)
+LONGRESP = ['100', '215', '220', '221', '222', '230', '231']
+
+
+# Line terminators (we always output CRLF, but accept any of CRLF, CR, LF)
+CRLF = '\r\n'
+
+
+# The class itself
+
+class NNTP:
+
+	# Initialize an instance.  Arguments:
+	# - host: hostname to connect to
+	# - port: port to connect to (default the standard NNTP port)
+
+	def init(self, host, *args):
+		if len(args) > 1: raise TypeError, 'too many args'
+		if args: port = args[0]
+		else: port = NNTP_PORT
+		self.host = host
+		self.port = port
+		self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+		self.sock.connect(self.host, self.port)
+		self.file = self.sock.makefile('r')
+		self.debugging = 0
+		self.welcome = self.getresp()
+		return self
+
+	# Get the welcome message from the server
+	# (this is read and squirreled away by init()).
+	# If the response code is 200, posting is allowed;
+	# if it 201, posting is not allowed
+
+	def getwelcome(self):
+		if self.debugging: print '*welcome*', `self.welcome`
+		return self.welcome
+
+	# Set the debugging level.  Argument level means:
+	# 0: no debugging output (default)
+	# 1: print commands and responses but not body text etc.
+	# 2: also print raw lines read and sent before stripping CR/LF
+
+	def debug(self, level):
+		self.debugging = level
+
+	# Internal: send one line to the server, appending CRLF
+	def putline(self, line):
+		line = line + CRLF
+		if self.debugging > 1: print '*put*', `line`
+		self.sock.send(line)
+
+	# Internal: send one command to the server (through putline())
+	def putcmd(self, line):
+		if self.debugging: print '*cmd*', `line`
+		self.putline(line)
+
+	# Internal: return one line from the server, stripping CRLF.
+	# Raise EOFError if the connection is closed
+	def getline(self):
+		line = self.file.readline()
+		if self.debugging > 1:
+			print '*get*', `line`
+		if not line: raise EOFError
+		if line[-2:] == CRLF: line = line[:-2]
+		elif line[-1:] in CRLF: line = line[:-1]
+		return line
+
+	# Internal: get a response from the server.
+	# Raise various errors if the response indicates an error
+	def getresp(self):
+		resp = self.getline()
+		if self.debugging: print '*resp*', `resp`
+		c = resp[:1]
+		if c == '4':
+			raise error_function, resp
+		if c == '5':
+			raise error_form, resp
+		if c not in '123':
+			raise error_protocol, resp
+		return resp
+
+	# Internal: get a response plus following text from the server.
+	# Raise various errors if the response indicates an error
+	def getlongresp(self):
+		resp = self.getresp()
+		if resp[:3] not in LONGRESP:
+			raise error_reply, resp
+		list = []
+		while 1:
+			line = self.getline()
+			if line == '.':
+				break
+			list.append(line)
+		return resp, list
+
+	# Internal: send a command and get the response
+	def shortcmd(self, line):
+		self.putcmd(line)
+		return self.getresp()
+
+	# Internal: send a command and get the response plus following text
+	def longcmd(self, line):
+		self.putcmd(line)
+		return self.getlongresp()
+
+	# Process a NEWGROUPS command.  Arguments:
+	# - date: string 'yymmdd' indicating the date
+	# - time: string 'hhmmss' indicating the time
+	# Return:
+	# - resp: server response if succesful
+	# - list: list of newsgroup names
+
+	def newgroups(self, date, time):
+		return self.longcmd('NEWGROUPS ' + date + ' ' + time)
+
+	# Process a NEWNEWS command.  Arguments:
+	# - group: group name or '*'
+	# - date: string 'yymmdd' indicating the date
+	# - time: string 'hhmmss' indicating the time
+	# Return:
+	# - resp: server response if succesful
+	# - list: list of article ids
+
+	def newnews(self, group, date, time):
+		cmd = 'NEWNEWS ' + group + ' ' + date + ' ' + time
+		return self.longcmd(cmd)
+
+	# Process a LIST command.  Return:
+	# - resp: server response if succesful
+	# - list: list of (group, first, last, flag) (strings)
+
+	def list(self):
+		resp, list = self.longcmd('LIST')
+		for i in range(len(list)):
+			# Parse lines into "group first last flag"
+			list[i] = string.split(list[i])
+		return resp, list
+
+	# Process a GROUP command.  Argument:
+	# - group: the group name
+	# Returns:
+	# - resp: server response if succesful
+	# - count: number of articles (string)
+	# - first: first article number (string)
+	# - last: last article number (string)
+	# - name: the group name
+
+	def group(self, name):
+		resp = self.shortcmd('GROUP ' + name)
+		if resp[:3] <> '211':
+			raise error_reply, resp
+		words = string.split(resp)
+		count = first = last = 0
+		n = len(words)
+		if n > 1:
+			count = words[1]
+			if n > 2:
+				first = words[2]
+				if n > 3:
+					last = words[3]
+					if n > 4:
+						name = string.lower(words[4])
+		return resp, count, first, last, name
+
+	# Process a HELP command.  Returns:
+	# - resp: server response if succesful
+	# - list: list of strings
+
+	def help(self):
+		return self.longcmd('HELP')
+
+	# Internal: parse the response of a STAT, NEXT or LAST command
+	def statparse(self, resp):
+		if resp[:2] <> '22':
+			raise error_reply, resp
+		words = string.split(resp)
+		nr = 0
+		id = ''
+		n = len(words)
+		if n > 1:
+			nr = words[1]
+			if n > 2:
+				id = string.lower(words[2])
+		return resp, nr, id
+
+	# Internal: process a STAT, NEXT or LAST command
+	def statcmd(self, line):
+		resp = self.shortcmd(line)
+		return self.statparse(resp)
+
+	# Process a STAT command.  Argument:
+	# - id: article number or message id
+	# Returns:
+	# - resp: server response if succesful
+	# - nr:   the article number
+	# - id:   the article id
+
+	def stat(self, id):
+		return self.statcmd('STAT ' + id)
+
+	# Process a NEXT command.  No arguments.  Return as for STAT
+
+	def next(self):
+		return self.statcmd('NEXT')
+
+	# Process a LAST command.  No arguments.  Return as for STAT
+
+	def last(self):
+		return self.statcmd('LAST')
+
+	# Internal: process a HEAD, BODY or ARTICLE command
+	def artcmd(self, line):
+		resp, list = self.longcmd(line)
+		resp, nr, id = self.statparse(resp)
+		return resp, nr, id, list
+
+	# Process a HEAD command.  Argument:
+	# - id: article number or message id
+	# Returns:
+	# - resp: server response if succesful
+	# - list: the lines of the article's header
+
+	def head(self, id):
+		return self.artcmd('HEAD ' + id)
+
+	# Process a BODY command.  Argument:
+	# - id: article number or message id
+	# Returns:
+	# - resp: server response if succesful
+	# - list: the lines of the article's body
+
+	def body(self, id):
+		return self.artcmd('BODY ' + id)
+
+	# Process an ARTICLE command.  Argument:
+	# - id: article number or message id
+	# Returns:
+	# - resp: server response if succesful
+	# - list: the lines of the article
+
+	def article(self, id):
+		return self.artcmd('ARTICLE ' + id)
+
+	# Process a SLAVE command.  Returns:
+	# - resp: server response if succesful
+
+	def slave(self):
+		return self.shortcmd('SLAVE')
+
+	# Process an XHDR command (optional server extension).  Arguments:
+	# - hdr: the header type (e.g. 'subject')
+	# - str: an article nr, a message id, or a range nr1-nr2
+	# Returns:
+	# - resp: server response if succesful
+	# - list: list of (nr, value) strings
+
+	def xhdr(self, hdr, str):
+		resp, lines = self.longcmd('XHDR ' + hdr + ' ' + str)
+		for i in range(len(lines)):
+			line = lines[i]
+			n = regex.match('^[0-9]+', line)
+			nr = line[:n]
+			if n < len(line) and line[n] == ' ': n = n+1
+			lines[i] = (nr, line[n:])
+		return resp, lines
+
+	# Process a POST command.  Arguments:
+	# - f: file containing the article
+	# Returns:
+	# - resp: server response if succesful
+
+	def post(self, f):
+		resp = self.shortcmd('POST')
+		# Raises error_??? if posting is not allowed
+		if resp[0] <> '3':
+			raise error_reply, resp
+		while 1:
+			line = f.readline()
+			if not line:
+				break
+			if line[-1] == '\n':
+				line = line[:-1]
+			if line == '.':
+				line = '..'
+			self.putline(line)
+		self.putline('.')
+		return self.getresp()
+
+	# Process an IHAVE command.  Arguments:
+	# - id: message-id of the article
+	# - f:  file containing the article
+	# Returns:
+	# - resp: server response if succesful
+	# Note that if the server refuses the article an exception is raised
+
+	def ihave(self, id, f):
+		resp = self.shortcmd('IHAVE ' + id)
+		# Raises error_function if the server already has it
+		if resp[0] <> '3':
+			raise error_reply, resp
+		while 1:
+			line = f.readline()
+			if not line:
+				break
+			if line[-1] == '\n':
+				line = line[:-1]
+			if line == '.':
+				line = '..'
+			self.putline(line)
+		self.putline('.')
+		return self.getresp()
+
+	 # Process a QUIT command and close the socket.  Returns:
+	 # - resp: server response if succesful
+
+	def quit(self):
+		resp = self.shortcmd('QUIT')
+		self.file.close()
+		self.sock.close()
+		del self.file, self.sock
+		return resp