socket wrapper module around _socket for all Window platforms

1 files changed, 136 insertions, 0 deletions

diff --git a/Lib/win/socket.py b/Lib/win/socket.py
new file mode 100755
index 0000000..ec016f4
--- /dev/null
+++ b/Lib/win/socket.py
@@ -0,0 +1,136 @@
+"Socket wrapper for Windows, which does not support dup()."
+
+print "new socket.py loading"
+
+# (And hence, fromfd() and makefile() are unimplemented in C....)
+
+# XXX Living dangerously here -- close() is implemented by deleting a
+# reference.  Thus we rely on the real _socket module to close on
+# deallocation, and also hope that nobody keeps a reference to our _sock
+# member.
+
+
+
+try:
+    from _socket import *
+except ImportError:
+    from socket import *
+
+_realsocketcall = socket
+
+
+def socket(family, type, proto=0):
+    return _socketobject(_realsocketcall(family, type, proto))
+
+
+class _socketobject:
+
+    def __init__(self, sock):
+	print "creating _socketobject", sock
+	self._sock = sock
+
+    def close(self):
+	self._sock = None
+
+    def __del__(self):
+	self.close()
+
+    def accept(self):
+	sock, addr = self._sock.accept()
+	return _socketobject(sock), addr
+
+    def dup(self):
+	return _socketobject(self._sock)
+
+    def makefile(self, mode='r', bufsize=-1):
+	return _fileobject(self._sock, mode, bufsize)
+
+    _s = "def %s(self, *args): return apply(self._sock.%s, args)\n\n"
+    for _m in ('bind', 'connect', 'fileno', 'listen',
+	       'getpeername', 'getsockname',
+	       'getsockopt', 'setsockopt',
+	       'recv', 'recvfrom', 'send', 'sendto',
+	       'setblocking',
+	       'shutdown'):
+	exec _s % (_m, _m)
+
+
+class _fileobject:
+
+    def __init__(self, sock, mode, bufsize):
+	self._sock = sock
+	self._mode = mode
+	if bufsize < 0:
+	    bufsize = 512
+	self._rbufsize = max(1, bufsize)
+	self._wbufsize = bufsize
+	self._wbuf = self._rbuf = ""
+
+    def close(self):
+	try:
+	    if self._sock:
+		self.flush()
+	finally:
+	    self._sock = None
+
+    def __del__(self):
+	self.close()
+
+    def flush(self):
+	if self._wbuf:
+	    self._sock.send(self._wbuf)
+	    self._wbuf = ""
+
+    def fileno(self):
+	return self._sock.fileno()
+
+    def write(self, data):
+	self._wbuf = self._wbuf + data
+	if self._wbufsize == 1:
+	    if '\n' in data:
+		self.flush()
+	else:
+	    if len(self._wbuf) >= self._wbufsize:
+		self.flush()
+
+    def writelines(self, list):
+	filter(self._sock.send, list)
+	self.flush()
+
+    def read(self, n=-1):
+	if n >= 0:
+	    while len(self._rbuf) < n:
+		new = self._sock.recv(self._rbufsize)
+		if not new: break
+		self._rbuf = self._rbuf + new
+	    data, self._rbuf = self._rbuf[:n], self._rbuf[n:]
+	    return data
+	while 1:
+	    new = self._sock.recv(self._rbufsize)
+	    if not new: break
+	    self._rbuf = self._rbuf + new
+	data, self._rbuf = self._rbuf, ""
+	return data
+
+    def readline(self):
+	import string
+	data = ""
+	i = string.find(self._rbuf, '\n')
+	while i < 0:
+	    new = self._sock.recv(self._rbufsize)
+	    if not new: break
+	    i = string.find(new, '\n')
+	    if i >= 0: i = i + len(self._rbuf)
+	    self._rbuf = self._rbuf + new
+	if i < 0: i = len(self._rbuf)
+	else: i = i+1
+	data, self._rbuf = self._rbuf[:i], self._rbuf[i:]
+	return data
+
+    def readlines(self):
+	list = []
+	while 1:
+	    line = self.readline()
+	    if not line: break
+	    list.append(line)
+	return list