Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 1 | # Wrapper module for _socket, providing some additional facilities |
| 2 | # implemented in Python. |
| 3 | |
| 4 | """\ |
| 5 | This module provides socket operations and some related functions. |
| 6 | On Unix, it supports IP (Internet Protocol) and Unix domain sockets. |
Tim Peters | 495ad3c | 2001-01-15 01:36:40 +0000 | [diff] [blame] | 7 | On other systems, it only supports IP. Functions specific for a |
Martin v. Löwis | af484d5 | 2000-09-30 11:34:30 +0000 | [diff] [blame] | 8 | socket are available as methods of the socket object. |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 9 | |
| 10 | Functions: |
| 11 | |
| 12 | socket() -- create a new socket object |
| 13 | fromfd() -- create a socket object from an open file descriptor [*] |
| 14 | gethostname() -- return the current hostname |
| 15 | gethostbyname() -- map a hostname to its IP number |
| 16 | gethostbyaddr() -- map an IP number or hostname to DNS info |
| 17 | getservbyname() -- map a service name and a protocol name to a port number |
| 18 | getprotobyname() -- mape a protocol name (e.g. 'tcp') to a number |
| 19 | ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order |
| 20 | htons(), htonl() -- convert 16, 32 bit int from host to network byte order |
| 21 | inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format |
| 22 | inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89) |
| 23 | ssl() -- secure socket layer support (only available if configured) |
Guido van Rossum | 9d0c8ce | 2002-07-18 17:08:35 +0000 | [diff] [blame] | 24 | socket.getdefaulttimeout() -- get the default timeout value |
| 25 | socket.setdefaulttimeout() -- set the default timeout value |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 26 | |
| 27 | [*] not available on all platforms! |
| 28 | |
| 29 | Special objects: |
| 30 | |
| 31 | SocketType -- type object for socket objects |
| 32 | error -- exception raised for I/O errors |
| 33 | |
| 34 | Integer constants: |
| 35 | |
| 36 | AF_INET, AF_UNIX -- socket domains (first argument to socket() call) |
| 37 | SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument) |
| 38 | |
| 39 | Many other constants may be defined; these may be used in calls to |
| 40 | the setsockopt() and getsockopt() methods. |
| 41 | """ |
| 42 | |
Tim Peters | 18e6778 | 2002-02-17 04:25:24 +0000 | [diff] [blame] | 43 | import _socket |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 44 | from _socket import * |
Tim Peters | 18e6778 | 2002-02-17 04:25:24 +0000 | [diff] [blame] | 45 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 46 | _have_ssl = False |
Marc-André Lemburg | a5d2b4c | 2002-02-16 18:23:30 +0000 | [diff] [blame] | 47 | try: |
Guido van Rossum | de7cade | 2002-08-08 15:25:28 +0000 | [diff] [blame^] | 48 | import _ssl |
Marc-André Lemburg | a5d2b4c | 2002-02-16 18:23:30 +0000 | [diff] [blame] | 49 | from _ssl import * |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 50 | _have_ssl = True |
Marc-André Lemburg | a5d2b4c | 2002-02-16 18:23:30 +0000 | [diff] [blame] | 51 | except ImportError: |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 52 | pass |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 53 | |
| 54 | import os, sys |
| 55 | |
Skip Montanaro | 0de6580 | 2001-02-15 22:15:14 +0000 | [diff] [blame] | 56 | __all__ = ["getfqdn"] |
Skip Montanaro | 0de6580 | 2001-02-15 22:15:14 +0000 | [diff] [blame] | 57 | __all__.extend(os._get_exports_list(_socket)) |
Guido van Rossum | de7cade | 2002-08-08 15:25:28 +0000 | [diff] [blame^] | 58 | if _have_ssl: |
| 59 | __all__.extend(os._get_exports_list(_ssl)) |
Skip Montanaro | 0de6580 | 2001-02-15 22:15:14 +0000 | [diff] [blame] | 60 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 61 | _realsocket = socket |
| 62 | _needwrapper = False |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 63 | if (sys.platform.lower().startswith("win") |
Guido van Rossum | d74fb6b | 2001-03-02 06:43:49 +0000 | [diff] [blame] | 64 | or (hasattr(os, 'uname') and os.uname()[0] == "BeOS") |
Tim Peters | 18e6778 | 2002-02-17 04:25:24 +0000 | [diff] [blame] | 65 | or sys.platform=="riscos"): |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 66 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 67 | _needwrapper = True |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 68 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 69 | if _have_ssl: |
| 70 | _realssl = ssl |
Guido van Rossum | 3f69f21 | 2001-03-22 22:12:17 +0000 | [diff] [blame] | 71 | def ssl(sock, keyfile=None, certfile=None): |
| 72 | if hasattr(sock, "_sock"): |
| 73 | sock = sock._sock |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 74 | return _realssl(sock, keyfile, certfile) |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 75 | |
| 76 | # WSA error codes |
| 77 | if sys.platform.lower().startswith("win"): |
| 78 | errorTab = {} |
| 79 | errorTab[10004] = "The operation was interrupted." |
| 80 | errorTab[10009] = "A bad file handle was passed." |
| 81 | errorTab[10013] = "Permission denied." |
| 82 | errorTab[10014] = "A fault occurred on the network??" # WSAEFAULT |
| 83 | errorTab[10022] = "An invalid operation was attempted." |
| 84 | errorTab[10035] = "The socket operation would block" |
| 85 | errorTab[10036] = "A blocking operation is already in progress." |
| 86 | errorTab[10048] = "The network address is in use." |
| 87 | errorTab[10054] = "The connection has been reset." |
| 88 | errorTab[10058] = "The network has been shut down." |
| 89 | errorTab[10060] = "The operation timed out." |
| 90 | errorTab[10061] = "Connection refused." |
| 91 | errorTab[10063] = "The name is too long." |
| 92 | errorTab[10064] = "The host is down." |
| 93 | errorTab[10065] = "The host is unreachable." |
Skip Montanaro | 64de1a4 | 2001-03-18 19:53:21 +0000 | [diff] [blame] | 94 | __all__.append("errorTab") |
Guido van Rossum | de7cade | 2002-08-08 15:25:28 +0000 | [diff] [blame^] | 95 | |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 96 | del os, sys |
| 97 | |
| 98 | |
| 99 | def getfqdn(name=''): |
| 100 | """Get fully qualified domain name from name. |
| 101 | |
| 102 | An empty argument is interpreted as meaning the local host. |
| 103 | |
| 104 | First the hostname returned by gethostbyaddr() is checked, then |
| 105 | possibly existing aliases. In case no FQDN is available, hostname |
| 106 | is returned. |
| 107 | """ |
| 108 | name = name.strip() |
Peter Schneider-Kamp | 2d2785a | 2000-08-16 20:30:21 +0000 | [diff] [blame] | 109 | if not name or name == '0.0.0.0': |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 110 | name = gethostname() |
| 111 | try: |
| 112 | hostname, aliases, ipaddrs = gethostbyaddr(name) |
| 113 | except error: |
| 114 | pass |
| 115 | else: |
| 116 | aliases.insert(0, hostname) |
| 117 | for name in aliases: |
| 118 | if '.' in name: |
| 119 | break |
| 120 | else: |
| 121 | name = hostname |
| 122 | return name |
| 123 | |
| 124 | |
| 125 | # |
| 126 | # These classes are used by the socket() defined on Windows and BeOS |
| 127 | # platforms to provide a best-effort implementation of the cleanup |
| 128 | # semantics needed when sockets can't be dup()ed. |
| 129 | # |
| 130 | # These are not actually used on other platforms. |
| 131 | # |
| 132 | |
Guido van Rossum | e5e5059 | 2001-08-18 01:23:20 +0000 | [diff] [blame] | 133 | _socketmethods = ( |
| 134 | 'bind', 'connect', 'connect_ex', 'fileno', 'listen', |
| 135 | 'getpeername', 'getsockname', 'getsockopt', 'setsockopt', |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 136 | 'recv', 'recvfrom', 'send', 'sendall', 'sendto', 'setblocking', |
| 137 | 'settimeout', 'gettimeout', 'shutdown') |
Guido van Rossum | e5e5059 | 2001-08-18 01:23:20 +0000 | [diff] [blame] | 138 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 139 | class _socketobject(object): |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 140 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 141 | __doc__ = _realsocket.__doc__ |
| 142 | |
| 143 | __slots__ = ["_sock"] |
| 144 | |
| 145 | class _closedsocket(object): |
| 146 | __slots__ = [] |
Guido van Rossum | 99d2fbb | 2001-12-18 22:22:25 +0000 | [diff] [blame] | 147 | def __getattr__(self, name): |
| 148 | raise error(9, 'Bad file descriptor') |
| 149 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 150 | def __init__(self, family=AF_INET, type=SOCK_STREAM, proto=0, _sock=None): |
| 151 | if _sock is None: |
Guido van Rossum | 7c3b634 | 2002-08-08 15:22:12 +0000 | [diff] [blame] | 152 | _sock = _realsocket(family, type, proto) |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 153 | self._sock = _sock |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 154 | |
| 155 | def close(self): |
Guido van Rossum | 99d2fbb | 2001-12-18 22:22:25 +0000 | [diff] [blame] | 156 | # Avoid referencing globals here |
| 157 | self._sock = self.__class__._closedsocket() |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 158 | close.__doc__ = _realsocket.close.__doc__ |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 159 | |
| 160 | def __del__(self): |
| 161 | self.close() |
| 162 | |
| 163 | def accept(self): |
| 164 | sock, addr = self._sock.accept() |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 165 | return _socketobject(_sock=sock), addr |
| 166 | accept.__doc__ = _realsocket.accept.__doc__ |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 167 | |
| 168 | def dup(self): |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 169 | """dup() -> socket object |
| 170 | |
| 171 | Return a new socket object connected to the same system resource.""" |
| 172 | return _socketobject(_sock=self._sock) |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 173 | |
| 174 | def makefile(self, mode='r', bufsize=-1): |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 175 | """makefile([mode[, bufsize]]) -> file object |
| 176 | |
| 177 | Return a regular file object corresponding to the socket. The mode |
| 178 | and bufsize arguments are as for the built-in open() function.""" |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 179 | return _fileobject(self._sock, mode, bufsize) |
| 180 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 181 | _s = ("def %s(self, *args): return self._sock.%s(*args)\n\n" |
| 182 | "%s.__doc__ = _realsocket.%s.__doc__\n") |
Guido van Rossum | e5e5059 | 2001-08-18 01:23:20 +0000 | [diff] [blame] | 183 | for _m in _socketmethods: |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 184 | exec _s % (_m, _m, _m, _m) |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 185 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 186 | if _needwrapper: |
| 187 | socket = _socketobject |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 188 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 189 | class _fileobject(object): |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 190 | """Faux file object attached to a socket object.""" |
| 191 | |
| 192 | default_bufsize = 8192 |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 193 | name = "<socket>" |
| 194 | |
| 195 | __slots__ = ["mode", "bufsize", "softspace", |
| 196 | # "closed" is a property, see below |
| 197 | "_sock", "_rbufsize", "_wbufsize", "_rbuf", "_wbuf"] |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 198 | |
Guido van Rossum | e9f6614 | 2002-08-07 15:46:19 +0000 | [diff] [blame] | 199 | def __init__(self, sock, mode='rb', bufsize=-1): |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 200 | self._sock = sock |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 201 | self.mode = mode # Not actually used in this version |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 202 | if bufsize < 0: |
| 203 | bufsize = self.default_bufsize |
Guido van Rossum | 7c3b634 | 2002-08-08 15:22:12 +0000 | [diff] [blame] | 204 | self.bufsize = bufsize |
| 205 | self.softspace = False |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 206 | if bufsize == 0: |
| 207 | self._rbufsize = 1 |
| 208 | elif bufsize == 1: |
| 209 | self._rbufsize = self.default_bufsize |
| 210 | else: |
| 211 | self._rbufsize = bufsize |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 212 | self._wbufsize = bufsize |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 213 | # The buffers are lists of non-empty strings |
| 214 | self._rbuf = [] |
| 215 | self._wbuf = [] |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 216 | |
Guido van Rossum | c18993f | 2002-08-08 15:16:20 +0000 | [diff] [blame] | 217 | def _getclosed(self): |
| 218 | return self._sock is not None |
| 219 | closed = property(_getclosed, doc="True if the file is closed") |
| 220 | |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 221 | def close(self): |
| 222 | try: |
| 223 | if self._sock: |
| 224 | self.flush() |
| 225 | finally: |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 226 | self._sock = None |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 227 | |
| 228 | def __del__(self): |
| 229 | self.close() |
| 230 | |
| 231 | def flush(self): |
| 232 | if self._wbuf: |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 233 | buffer = "".join(self._wbuf) |
| 234 | self._wbuf = [] |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 235 | self._sock.sendall(buffer) |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 236 | |
Neal Norwitz | 2b34290 | 2002-06-13 22:18:39 +0000 | [diff] [blame] | 237 | def fileno(self): |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 238 | return self._sock.fileno() |
| 239 | |
| 240 | def write(self, data): |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 241 | data = str(data) # XXX Should really reject non-string non-buffers |
| 242 | if not data: |
| 243 | return |
| 244 | self._wbuf.append(data) |
| 245 | if (self._wbufsize == 0 or |
| 246 | self._wbufsize == 1 and '\n' in data or |
| 247 | self._get_wbuf_len() >= self._wbufsize): |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 248 | self.flush() |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 249 | |
| 250 | def writelines(self, list): |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 251 | # XXX We could do better here for very long lists |
| 252 | # XXX Should really reject non-string non-buffers |
| 253 | self._wbuf.extend(filter(None, map(str, list))) |
| 254 | if (self._wbufsize <= 1 or |
| 255 | self._get_wbuf_len() >= self._wbufsize): |
| 256 | self.flush() |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 257 | |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 258 | def _get_wbuf_len(self): |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 259 | buf_len = 0 |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 260 | for x in self._wbuf: |
| 261 | buf_len += len(x) |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 262 | return buf_len |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 263 | |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 264 | def _get_rbuf_len(self): |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 265 | buf_len = 0 |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 266 | for x in self._rbuf: |
| 267 | buf_len += len(x) |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 268 | return buf_len |
| 269 | |
| 270 | def read(self, size=-1): |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 271 | if size < 0: |
| 272 | # Read until EOF |
| 273 | if self._rbufsize <= 1: |
| 274 | recv_size = self.default_bufsize |
| 275 | else: |
| 276 | recv_size = self._rbufsize |
| 277 | while 1: |
| 278 | data = self._sock.recv(recv_size) |
| 279 | if not data: |
| 280 | break |
| 281 | self._rbuf.append(data) |
| 282 | else: |
| 283 | buf_len = self._get_rbuf_len() |
| 284 | while buf_len < size: |
| 285 | recv_size = max(self._rbufsize, size - buf_len) |
| 286 | data = self._sock.recv(recv_size) |
| 287 | if not data: |
| 288 | break |
| 289 | buf_len += len(data) |
| 290 | self._rbuf.append(data) |
| 291 | data = "".join(self._rbuf) |
| 292 | self._rbuf = [] |
| 293 | if 0 <= size < buf_len: |
Neal Norwitz | 2b34290 | 2002-06-13 22:18:39 +0000 | [diff] [blame] | 294 | self._rbuf.append(data[size:]) |
| 295 | data = data[:size] |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 296 | return data |
| 297 | |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 298 | def readline(self, size=-1): |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 299 | data_len = 0 |
| 300 | for index, x in enumerate(self._rbuf): |
| 301 | data_len += len(x) |
| 302 | if '\n' in x or 0 <= size <= data_len: |
| 303 | index += 1 |
| 304 | data = "".join(self._rbuf[:index]) |
| 305 | end = data.find('\n') |
| 306 | if end < 0: |
| 307 | end = len(data) |
| 308 | else: |
| 309 | end += 1 |
| 310 | if 0 <= size < end: |
| 311 | end = size |
| 312 | data, rest = data[:end], data[end:] |
| 313 | if rest: |
| 314 | self._rbuf[:index] = [rest] |
| 315 | else: |
| 316 | del self._rbuf[:index] |
| 317 | return data |
| 318 | recv_size = self._rbufsize |
| 319 | while 1: |
| 320 | if size >= 0: |
| 321 | recv_size = min(self._rbufsize, size - data_len) |
| 322 | x = self._sock.recv(recv_size) |
| 323 | if not x: |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 324 | break |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 325 | data_len += len(x) |
| 326 | self._rbuf.append(x) |
| 327 | if '\n' in x or 0 <= size <= data_len: |
| 328 | break |
| 329 | data = "".join(self._rbuf) |
| 330 | end = data.find('\n') |
| 331 | if end < 0: |
| 332 | end = len(data) |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 333 | else: |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 334 | end += 1 |
| 335 | if 0 <= size < end: |
| 336 | end = size |
| 337 | data, rest = data[:end], data[end:] |
| 338 | if rest: |
| 339 | self._rbuf = [rest] |
| 340 | else: |
| 341 | self._rbuf = [] |
Guido van Rossum | 67f7a38 | 2002-06-06 21:08:16 +0000 | [diff] [blame] | 342 | return data |
| 343 | |
| 344 | def readlines(self, sizehint=0): |
Martin v. Löwis | 6df27f8 | 2000-09-19 11:25:58 +0000 | [diff] [blame] | 345 | total = 0 |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 346 | list = [] |
| 347 | while 1: |
| 348 | line = self.readline() |
Neal Norwitz | 2b34290 | 2002-06-13 22:18:39 +0000 | [diff] [blame] | 349 | if not line: |
| 350 | break |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 351 | list.append(line) |
Martin v. Löwis | 6df27f8 | 2000-09-19 11:25:58 +0000 | [diff] [blame] | 352 | total += len(line) |
| 353 | if sizehint and total >= sizehint: |
| 354 | break |
Fred Drake | a6070f0 | 2000-08-16 14:14:32 +0000 | [diff] [blame] | 355 | return list |
Guido van Rossum | 443fec3 | 2002-08-08 01:02:16 +0000 | [diff] [blame] | 356 | |
| 357 | # Iterator protocols |
| 358 | |
| 359 | def __iter__(self): |
| 360 | return self |
| 361 | |
| 362 | def next(self): |
| 363 | line = self.readline() |
| 364 | if not line: |
| 365 | raise StopIteration |
| 366 | return line |