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2015-03-31 20:26:20 +00:00
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PasteScript-1.7.4.2-py2.6.egg/paste/script/util/__init__.py Executable file
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# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
#

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PasteScript-1.7.4.2-py2.6.egg/paste/script/util/logging_config.py Executable file
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# Copyright 2001-2005 by Vinay Sajip. All Rights Reserved.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose and without fee is hereby granted,
# provided that the above copyright notice appear in all copies and that
# both that copyright notice and this permission notice appear in
# supporting documentation, and that the name of Vinay Sajip
# not be used in advertising or publicity pertaining to distribution
# of the software without specific, written prior permission.
# VINAY SAJIP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
# VINAY SAJIP BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
# IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
"""
Configuration functions for the logging package for Python. The core package
is based on PEP 282 and comments thereto in comp.lang.python, and influenced
by Apache's log4j system.
Should work under Python versions >= 1.5.2, except that source line
information is not available unless 'sys._getframe()' is.
Copyright (C) 2001-2004 Vinay Sajip. All Rights Reserved.
To use, simply 'import logging' and log away!
"""
import sys, logging, logging.handlers, string, socket, struct, os, traceback, types
try:
import thread
import threading
except ImportError:
thread = None
from SocketServer import ThreadingTCPServer, StreamRequestHandler
DEFAULT_LOGGING_CONFIG_PORT = 9030
if sys.platform == "win32":
RESET_ERROR = 10054 #WSAECONNRESET
else:
RESET_ERROR = 104 #ECONNRESET
#
# The following code implements a socket listener for on-the-fly
# reconfiguration of logging.
#
# _listener holds the server object doing the listening
_listener = None
def fileConfig(fname, defaults=None):
"""
Read the logging configuration from a ConfigParser-format file.
This can be called several times from an application, allowing an end user
the ability to select from various pre-canned configurations (if the
developer provides a mechanism to present the choices and load the chosen
configuration).
In versions of ConfigParser which have the readfp method [typically
shipped in 2.x versions of Python], you can pass in a file-like object
rather than a filename, in which case the file-like object will be read
using readfp.
"""
import ConfigParser
cp = ConfigParser.ConfigParser(defaults)
if hasattr(cp, 'readfp') and hasattr(fname, 'readline'):
cp.readfp(fname)
else:
cp.read(fname)
formatters = _create_formatters(cp)
# critical section
logging._acquireLock()
try:
logging._handlers.clear()
if hasattr(logging, '_handlerList'):
del logging._handlerList[:]
# Handlers add themselves to logging._handlers
handlers = _install_handlers(cp, formatters)
_install_loggers(cp, handlers)
finally:
logging._releaseLock()
def _resolve(name):
"""Resolve a dotted name to a global object."""
name = string.split(name, '.')
used = name.pop(0)
found = __import__(used)
for n in name:
used = used + '.' + n
try:
found = getattr(found, n)
except AttributeError:
__import__(used)
found = getattr(found, n)
return found
def _create_formatters(cp):
"""Create and return formatters"""
flist = cp.get("formatters", "keys")
if not len(flist):
return {}
flist = string.split(flist, ",")
formatters = {}
for form in flist:
form = string.strip(form)
sectname = "formatter_%s" % form
opts = cp.options(sectname)
if "format" in opts:
fs = cp.get(sectname, "format", 1)
else:
fs = None
if "datefmt" in opts:
dfs = cp.get(sectname, "datefmt", 1)
else:
dfs = None
c = logging.Formatter
if "class" in opts:
class_name = cp.get(sectname, "class")
if class_name:
c = _resolve(class_name)
f = c(fs, dfs)
formatters[form] = f
return formatters
def _install_handlers(cp, formatters):
"""Install and return handlers"""
hlist = cp.get("handlers", "keys")
if not len(hlist):
return {}
hlist = string.split(hlist, ",")
handlers = {}
fixups = [] #for inter-handler references
for hand in hlist:
hand = string.strip(hand)
sectname = "handler_%s" % hand
klass = cp.get(sectname, "class")
opts = cp.options(sectname)
if "formatter" in opts:
fmt = cp.get(sectname, "formatter")
else:
fmt = ""
try:
klass = eval(klass, vars(logging))
except (AttributeError, NameError):
klass = _resolve(klass)
args = cp.get(sectname, "args")
args = eval(args, vars(logging))
h = apply(klass, args)
if "level" in opts:
level = cp.get(sectname, "level")
h.setLevel(logging._levelNames[level])
if len(fmt):
h.setFormatter(formatters[fmt])
#temporary hack for FileHandler and MemoryHandler.
if klass == logging.handlers.MemoryHandler:
if "target" in opts:
target = cp.get(sectname,"target")
else:
target = ""
if len(target): #the target handler may not be loaded yet, so keep for later...
fixups.append((h, target))
handlers[hand] = h
#now all handlers are loaded, fixup inter-handler references...
for h, t in fixups:
h.setTarget(handlers[t])
return handlers
def _install_loggers(cp, handlers):
"""Create and install loggers"""
# configure the root first
llist = cp.get("loggers", "keys")
llist = string.split(llist, ",")
llist = map(lambda x: string.strip(x), llist)
llist.remove("root")
sectname = "logger_root"
root = logging.root
log = root
opts = cp.options(sectname)
if "level" in opts:
level = cp.get(sectname, "level")
log.setLevel(logging._levelNames[level])
for h in root.handlers[:]:
root.removeHandler(h)
hlist = cp.get(sectname, "handlers")
if len(hlist):
hlist = string.split(hlist, ",")
for hand in hlist:
log.addHandler(handlers[string.strip(hand)])
#and now the others...
#we don't want to lose the existing loggers,
#since other threads may have pointers to them.
#existing is set to contain all existing loggers,
#and as we go through the new configuration we
#remove any which are configured. At the end,
#what's left in existing is the set of loggers
#which were in the previous configuration but
#which are not in the new configuration.
existing = root.manager.loggerDict.keys()
#now set up the new ones...
for log in llist:
sectname = "logger_%s" % log
qn = cp.get(sectname, "qualname")
opts = cp.options(sectname)
if "propagate" in opts:
propagate = cp.getint(sectname, "propagate")
else:
propagate = 1
logger = logging.getLogger(qn)
if qn in existing:
existing.remove(qn)
if "level" in opts:
level = cp.get(sectname, "level")
logger.setLevel(logging._levelNames[level])
for h in logger.handlers[:]:
logger.removeHandler(h)
logger.propagate = propagate
logger.disabled = 0
hlist = cp.get(sectname, "handlers")
if len(hlist):
hlist = string.split(hlist, ",")
for hand in hlist:
logger.addHandler(handlers[string.strip(hand)])
#Disable any old loggers. There's no point deleting
#them as other threads may continue to hold references
#and by disabling them, you stop them doing any logging.
for log in existing:
root.manager.loggerDict[log].disabled = 1
def listen(port=DEFAULT_LOGGING_CONFIG_PORT):
"""
Start up a socket server on the specified port, and listen for new
configurations.
These will be sent as a file suitable for processing by fileConfig().
Returns a Thread object on which you can call start() to start the server,
and which you can join() when appropriate. To stop the server, call
stopListening().
"""
if not thread:
raise NotImplementedError, "listen() needs threading to work"
class ConfigStreamHandler(StreamRequestHandler):
"""
Handler for a logging configuration request.
It expects a completely new logging configuration and uses fileConfig
to install it.
"""
def handle(self):
"""
Handle a request.
Each request is expected to be a 4-byte length, packed using
struct.pack(">L", n), followed by the config file.
Uses fileConfig() to do the grunt work.
"""
import tempfile
try:
conn = self.connection
chunk = conn.recv(4)
if len(chunk) == 4:
slen = struct.unpack(">L", chunk)[0]
chunk = self.connection.recv(slen)
while len(chunk) < slen:
chunk = chunk + conn.recv(slen - len(chunk))
#Apply new configuration. We'd like to be able to
#create a StringIO and pass that in, but unfortunately
#1.5.2 ConfigParser does not support reading file
#objects, only actual files. So we create a temporary
#file and remove it later.
file = tempfile.mktemp(".ini")
f = open(file, "w")
f.write(chunk)
f.close()
try:
fileConfig(file)
except (KeyboardInterrupt, SystemExit):
raise
except:
traceback.print_exc()
os.remove(file)
except socket.error, e:
if type(e.args) != types.TupleType:
raise
else:
errcode = e.args[0]
if errcode != RESET_ERROR:
raise
class ConfigSocketReceiver(ThreadingTCPServer):
"""
A simple TCP socket-based logging config receiver.
"""
allow_reuse_address = 1
def __init__(self, host='localhost', port=DEFAULT_LOGGING_CONFIG_PORT,
handler=None):
ThreadingTCPServer.__init__(self, (host, port), handler)
logging._acquireLock()
self.abort = 0
logging._releaseLock()
self.timeout = 1
def serve_until_stopped(self):
import select
abort = 0
while not abort:
rd, wr, ex = select.select([self.socket.fileno()],
[], [],
self.timeout)
if rd:
self.handle_request()
logging._acquireLock()
abort = self.abort
logging._releaseLock()
def serve(rcvr, hdlr, port):
server = rcvr(port=port, handler=hdlr)
global _listener
logging._acquireLock()
_listener = server
logging._releaseLock()
server.serve_until_stopped()
return threading.Thread(target=serve,
args=(ConfigSocketReceiver,
ConfigStreamHandler, port))
def stopListening():
"""
Stop the listening server which was created with a call to listen().
"""
global _listener
if _listener:
logging._acquireLock()
_listener.abort = 1
_listener = None
logging._releaseLock()

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PasteScript-1.7.4.2-py2.6.egg/paste/script/util/secret.py Executable file
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# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
"""
Create random secrets.
"""
import os
import random
def random_bytes(length):
"""
Return a string of the given length. Uses ``os.urandom`` if it
can, or just pseudo-random numbers otherwise.
"""
try:
return os.urandom(length)
except AttributeError:
return ''.join([
chr(random.randrange(256)) for i in xrange(length)])
def secret_string(length=25):
"""
Returns a random string of the given length. The string
is a base64-encoded version of a set of random bytes, truncated
to the given length (and without any newlines).
"""
s = random_bytes(length).encode('base64')
for badchar in '\n\r=':
s = s.replace(badchar, '')
# We're wasting some characters here. But random characters are
# cheap ;)
return s[:length]

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PasteScript-1.7.4.2-py2.6.egg/paste/script/util/string24.py Executable file
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# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
"""A collection of string operations (most are no longer used).
Warning: most of the code you see here isn't normally used nowadays.
Beginning with Python 1.6, many of these functions are implemented as
methods on the standard string object. They used to be implemented by
a built-in module called strop, but strop is now obsolete itself.
Public module variables:
whitespace -- a string containing all characters considered whitespace
lowercase -- a string containing all characters considered lowercase letters
uppercase -- a string containing all characters considered uppercase letters
letters -- a string containing all characters considered letters
digits -- a string containing all characters considered decimal digits
hexdigits -- a string containing all characters considered hexadecimal digits
octdigits -- a string containing all characters considered octal digits
punctuation -- a string containing all characters considered punctuation
printable -- a string containing all characters considered printable
"""
# Some strings for ctype-style character classification
whitespace = ' \t\n\r\v\f'
lowercase = 'abcdefghijklmnopqrstuvwxyz'
uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
letters = lowercase + uppercase
ascii_lowercase = lowercase
ascii_uppercase = uppercase
ascii_letters = ascii_lowercase + ascii_uppercase
digits = '0123456789'
hexdigits = digits + 'abcdef' + 'ABCDEF'
octdigits = '01234567'
punctuation = """!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~"""
printable = digits + letters + punctuation + whitespace
# Case conversion helpers
# Use str to convert Unicode literal in case of -U
# Note that Cookie.py bogusly uses _idmap :(
l = map(chr, xrange(256))
_idmap = str('').join(l)
del l
# Functions which aren't available as string methods.
# Capitalize the words in a string, e.g. " aBc dEf " -> "Abc Def".
# See also regsub.capwords().
def capwords(s, sep=None):
"""capwords(s, [sep]) -> string
Split the argument into words using split, capitalize each
word using capitalize, and join the capitalized words using
join. Note that this replaces runs of whitespace characters by
a single space.
"""
return (sep or ' ').join([x.capitalize() for x in s.split(sep)])
# Construct a translation string
_idmapL = None
def maketrans(fromstr, tostr):
"""maketrans(frm, to) -> string
Return a translation table (a string of 256 bytes long)
suitable for use in string.translate. The strings frm and to
must be of the same length.
"""
if len(fromstr) != len(tostr):
raise ValueError, "maketrans arguments must have same length"
global _idmapL
if not _idmapL:
_idmapL = map(None, _idmap)
L = _idmapL[:]
fromstr = map(ord, fromstr)
for i in range(len(fromstr)):
L[fromstr[i]] = tostr[i]
return ''.join(L)
####################################################################
import re as _re
class _multimap:
"""Helper class for combining multiple mappings.
Used by .{safe_,}substitute() to combine the mapping and keyword
arguments.
"""
def __init__(self, primary, secondary):
self._primary = primary
self._secondary = secondary
def __getitem__(self, key):
try:
return self._primary[key]
except KeyError:
return self._secondary[key]
class _TemplateMetaclass(type):
pattern = r"""
%(delim)s(?:
(?P<escaped>%(delim)s) | # Escape sequence of two delimiters
(?P<named>%(id)s) | # delimiter and a Python identifier
{(?P<braced>%(id)s)} | # delimiter and a braced identifier
(?P<invalid>) # Other ill-formed delimiter exprs
)
"""
def __init__(cls, name, bases, dct):
super(_TemplateMetaclass, cls).__init__(name, bases, dct)
if 'pattern' in dct:
pattern = cls.pattern
else:
pattern = _TemplateMetaclass.pattern % {
'delim' : _re.escape(cls.delimiter),
'id' : cls.idpattern,
}
cls.pattern = _re.compile(pattern, _re.IGNORECASE | _re.VERBOSE)
class Template:
"""A string class for supporting $-substitutions."""
__metaclass__ = _TemplateMetaclass
delimiter = '$'
idpattern = r'[_a-z][_a-z0-9]*'
def __init__(self, template):
self.template = template
# Search for $$, $identifier, ${identifier}, and any bare $'s
def _invalid(self, mo):
i = mo.start('invalid')
lines = self.template[:i].splitlines(True)
if not lines:
colno = 1
lineno = 1
else:
colno = i - len(''.join(lines[:-1]))
lineno = len(lines)
raise ValueError('Invalid placeholder in string: line %d, col %d' %
(lineno, colno))
def substitute(self, *args, **kws):
if len(args) > 1:
raise TypeError('Too many positional arguments')
if not args:
mapping = kws
elif kws:
mapping = _multimap(kws, args[0])
else:
mapping = args[0]
# Helper function for .sub()
def convert(mo):
# Check the most common path first.
named = mo.group('named') or mo.group('braced')
if named is not None:
val = mapping[named]
# We use this idiom instead of str() because the latter will
# fail if val is a Unicode containing non-ASCII characters.
return '%s' % val
if mo.group('escaped') is not None:
return self.delimiter
if mo.group('invalid') is not None:
self._invalid(mo)
raise ValueError('Unrecognized named group in pattern',
self.pattern)
return self.pattern.sub(convert, self.template)
def safe_substitute(self, *args, **kws):
if len(args) > 1:
raise TypeError('Too many positional arguments')
if not args:
mapping = kws
elif kws:
mapping = _multimap(kws, args[0])
else:
mapping = args[0]
# Helper function for .sub()
def convert(mo):
named = mo.group('named')
if named is not None:
try:
# We use this idiom instead of str() because the latter
# will fail if val is a Unicode containing non-ASCII
return '%s' % mapping[named]
except KeyError:
return self.delimiter + named
braced = mo.group('braced')
if braced is not None:
try:
return '%s' % mapping[braced]
except KeyError:
return self.delimiter + '{' + braced + '}'
if mo.group('escaped') is not None:
return self.delimiter
if mo.group('invalid') is not None:
return self.delimiter
raise ValueError('Unrecognized named group in pattern',
self.pattern)
return self.pattern.sub(convert, self.template)
####################################################################
# NOTE: Everything below here is deprecated. Use string methods instead.
# This stuff will go away in Python 3.0.
# Backward compatible names for exceptions
index_error = ValueError
atoi_error = ValueError
atof_error = ValueError
atol_error = ValueError
# convert UPPER CASE letters to lower case
def lower(s):
"""lower(s) -> string
Return a copy of the string s converted to lowercase.
"""
return s.lower()
# Convert lower case letters to UPPER CASE
def upper(s):
"""upper(s) -> string
Return a copy of the string s converted to uppercase.
"""
return s.upper()
# Swap lower case letters and UPPER CASE
def swapcase(s):
"""swapcase(s) -> string
Return a copy of the string s with upper case characters
converted to lowercase and vice versa.
"""
return s.swapcase()
# Strip leading and trailing tabs and spaces
def strip(s, chars=None):
"""strip(s [,chars]) -> string
Return a copy of the string s with leading and trailing
whitespace removed.
If chars is given and not None, remove characters in chars instead.
If chars is unicode, S will be converted to unicode before stripping.
"""
return s.strip(chars)
# Strip leading tabs and spaces
def lstrip(s, chars=None):
"""lstrip(s [,chars]) -> string
Return a copy of the string s with leading whitespace removed.
If chars is given and not None, remove characters in chars instead.
"""
return s.lstrip(chars)
# Strip trailing tabs and spaces
def rstrip(s, chars=None):
"""rstrip(s [,chars]) -> string
Return a copy of the string s with trailing whitespace removed.
If chars is given and not None, remove characters in chars instead.
"""
return s.rstrip(chars)
# Split a string into a list of space/tab-separated words
def split(s, sep=None, maxsplit=-1):
"""split(s [,sep [,maxsplit]]) -> list of strings
Return a list of the words in the string s, using sep as the
delimiter string. If maxsplit is given, splits at no more than
maxsplit places (resulting in at most maxsplit+1 words). If sep
is not specified or is None, any whitespace string is a separator.
(split and splitfields are synonymous)
"""
return s.split(sep, maxsplit)
splitfields = split
# Split a string into a list of space/tab-separated words
def rsplit(s, sep=None, maxsplit=-1):
"""rsplit(s [,sep [,maxsplit]]) -> list of strings
Return a list of the words in the string s, using sep as the
delimiter string, starting at the end of the string and working
to the front. If maxsplit is given, at most maxsplit splits are
done. If sep is not specified or is None, any whitespace string
is a separator.
"""
return s.rsplit(sep, maxsplit)
# Join fields with optional separator
def join(words, sep = ' '):
"""join(list [,sep]) -> string
Return a string composed of the words in list, with
intervening occurrences of sep. The default separator is a
single space.
(joinfields and join are synonymous)
"""
return sep.join(words)
joinfields = join
# Find substring, raise exception if not found
def index(s, *args):
"""index(s, sub [,start [,end]]) -> int
Like find but raises ValueError when the substring is not found.
"""
return s.index(*args)
# Find last substring, raise exception if not found
def rindex(s, *args):
"""rindex(s, sub [,start [,end]]) -> int
Like rfind but raises ValueError when the substring is not found.
"""
return s.rindex(*args)
# Count non-overlapping occurrences of substring
def count(s, *args):
"""count(s, sub[, start[,end]]) -> int
Return the number of occurrences of substring sub in string
s[start:end]. Optional arguments start and end are
interpreted as in slice notation.
"""
return s.count(*args)
# Find substring, return -1 if not found
def find(s, *args):
"""find(s, sub [,start [,end]]) -> in
Return the lowest index in s where substring sub is found,
such that sub is contained within s[start,end]. Optional
arguments start and end are interpreted as in slice notation.
Return -1 on failure.
"""
return s.find(*args)
# Find last substring, return -1 if not found
def rfind(s, *args):
"""rfind(s, sub [,start [,end]]) -> int
Return the highest index in s where substring sub is found,
such that sub is contained within s[start,end]. Optional
arguments start and end are interpreted as in slice notation.
Return -1 on failure.
"""
return s.rfind(*args)
# for a bit of speed
_float = float
_int = int
_long = long
# Convert string to float
def atof(s):
"""atof(s) -> float
Return the floating point number represented by the string s.
"""
return _float(s)
# Convert string to integer
def atoi(s , base=10):
"""atoi(s [,base]) -> int
Return the integer represented by the string s in the given
base, which defaults to 10. The string s must consist of one
or more digits, possibly preceded by a sign. If base is 0, it
is chosen from the leading characters of s, 0 for octal, 0x or
0X for hexadecimal. If base is 16, a preceding 0x or 0X is
accepted.
"""
return _int(s, base)
# Convert string to long integer
def atol(s, base=10):
"""atol(s [,base]) -> long
Return the long integer represented by the string s in the
given base, which defaults to 10. The string s must consist
of one or more digits, possibly preceded by a sign. If base
is 0, it is chosen from the leading characters of s, 0 for
octal, 0x or 0X for hexadecimal. If base is 16, a preceding
0x or 0X is accepted. A trailing L or l is not accepted,
unless base is 0.
"""
return _long(s, base)
# Left-justify a string
def ljust(s, width, *args):
"""ljust(s, width[, fillchar]) -> string
Return a left-justified version of s, in a field of the
specified width, padded with spaces as needed. The string is
never truncated. If specified the fillchar is used instead of spaces.
"""
return s.ljust(width, *args)
# Right-justify a string
def rjust(s, width, *args):
"""rjust(s, width[, fillchar]) -> string
Return a right-justified version of s, in a field of the
specified width, padded with spaces as needed. The string is
never truncated. If specified the fillchar is used instead of spaces.
"""
return s.rjust(width, *args)
# Center a string
def center(s, width, *args):
"""center(s, width[, fillchar]) -> string
Return a center version of s, in a field of the specified
width. padded with spaces as needed. The string is never
truncated. If specified the fillchar is used instead of spaces.
"""
return s.center(width, *args)
# Zero-fill a number, e.g., (12, 3) --> '012' and (-3, 3) --> '-03'
# Decadent feature: the argument may be a string or a number
# (Use of this is deprecated; it should be a string as with ljust c.s.)
def zfill(x, width):
"""zfill(x, width) -> string
Pad a numeric string x with zeros on the left, to fill a field
of the specified width. The string x is never truncated.
"""
if not isinstance(x, basestring):
x = repr(x)
return x.zfill(width)
# Expand tabs in a string.
# Doesn't take non-printing chars into account, but does understand \n.
def expandtabs(s, tabsize=8):
"""expandtabs(s [,tabsize]) -> string
Return a copy of the string s with all tab characters replaced
by the appropriate number of spaces, depending on the current
column, and the tabsize (default 8).
"""
return s.expandtabs(tabsize)
# Character translation through look-up table.
def translate(s, table, deletions=""):
"""translate(s,table [,deletions]) -> string
Return a copy of the string s, where all characters occurring
in the optional argument deletions are removed, and the
remaining characters have been mapped through the given
translation table, which must be a string of length 256. The
deletions argument is not allowed for Unicode strings.
"""
if deletions:
return s.translate(table, deletions)
else:
# Add s[:0] so that if s is Unicode and table is an 8-bit string,
# table is converted to Unicode. This means that table *cannot*
# be a dictionary -- for that feature, use u.translate() directly.
return s.translate(table + s[:0])
# Capitalize a string, e.g. "aBc dEf" -> "Abc def".
def capitalize(s):
"""capitalize(s) -> string
Return a copy of the string s with only its first character
capitalized.
"""
return s.capitalize()
# Substring replacement (global)
def replace(s, old, new, maxsplit=-1):
"""replace (str, old, new[, maxsplit]) -> string
Return a copy of string str with all occurrences of substring
old replaced by new. If the optional argument maxsplit is
given, only the first maxsplit occurrences are replaced.
"""
return s.replace(old, new, maxsplit)
# Try importing optional built-in module "strop" -- if it exists,
# it redefines some string operations that are 100-1000 times faster.
# It also defines values for whitespace, lowercase and uppercase
# that match <ctype.h>'s definitions.
try:
from strop import maketrans, lowercase, uppercase, whitespace
letters = lowercase + uppercase
except ImportError:
pass # Use the original versions

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# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
"""UUID (universally unique identifiers) as specified in RFC 4122.
This module provides the UUID class and the functions uuid1(), uuid3(),
uuid4(), uuid5() for generating version 1, 3, 4, and 5 UUIDs respectively.
This module works with Python 2.3 or higher."""
__author__ = 'Ka-Ping Yee <ping@zesty.ca>'
__date__ = '$Date: 2005/11/30 11:51:58 $'.split()[1].replace('/', '-')
__version__ = '$Revision: 1.10 $'
RESERVED_NCS, RFC_4122, RESERVED_MICROSOFT, RESERVED_FUTURE = [
'reserved for NCS compatibility', 'specified in RFC 4122',
'reserved for Microsoft compatibility', 'reserved for future definition']
class UUID(object):
"""Instances of the UUID class represent UUIDs as specified in RFC 4122.
Converting a UUID to a string using str() produces a string in the form
"{12345678-1234-1234-1234-123456789abc}". The UUID constructor accepts
a similar string (braces and hyphens optional), or six integer arguments
(with 32-bit, 16-bit, 16-bit, 8-bit, 8-bit, and 48-bit values
respectively). UUID objects have the following attributes:
bytes gets or sets the UUID as a 16-byte string
urn gets the UUID as a URN as specified in RFC 4122
variant gets or sets the UUID variant as one of the constants
RESERVED_NCS, RFC_4122, RESERVED_MICROSOFT, RESERVED_FUTURE
version gets or sets the UUID version number (1 through 5)
"""
def __init__(self, *args):
"""Create a UUID either from a string representation in hexadecimal
or from six integers (32-bit time_low, 16-bit time_mid, 16-bit
time_hi_ver, 8-bit clock_hi_res, 8-bit clock_low, 48-bit node)."""
if len(args) == 1:
digits = args[0].replace('urn:', '').replace('uuid:', '')
digits = digits.replace('{', '').replace('}', '').replace('-', '')
assert len(digits) == 32, ValueError('badly formed UUID string')
time_low = int(digits[:8], 16)
time_mid = int(digits[8:12], 16)
time_hi_ver = int(digits[12:16], 16)
clock_hi_res = int(digits[16:18], 16)
clock_low = int(digits[18:20], 16)
node = int(digits[20:32], 16)
else:
(time_low, time_mid, time_hi_ver,
clock_hi_res, clock_low, node) = args
assert 0 <= time_low < 0x100000000, ValueError('time_low out of range')
assert 0 <= time_mid < 1<<16, ValueError('time_mid out of range')
assert 0 <= time_hi_ver < 1<<16, ValueError('time_hi_ver out of range')
assert 0 <= clock_hi_res < 1<<8, ValueError('clock_hi_res out of range')
assert 0 <= clock_low < 1<<8, ValueError('clock_low out of range')
assert 0 <= node < 0x1000000000000, ValueError('node out of range')
self.time_low = time_low
self.time_mid = time_mid
self.time_hi_ver = time_hi_ver
self.clock_hi_res = clock_hi_res
self.clock_low = clock_low
self.node = node
def __cmp__(self, other):
return cmp(self.bytes, getattr(other, 'bytes', other))
def __str__(self):
return '{%08x-%04x-%04x-%02x%02x-%012x}' % (
self.time_low, self.time_mid, self.time_hi_ver,
self.clock_hi_res, self.clock_low, self.node)
def __repr__(self):
return 'UUID(%r)' % str(self)
def get_bytes(self):
def byte(n):
return chr(n & 0xff)
return (byte(self.time_low >> 24) + byte(self.time_low >> 16) +
byte(self.time_low >> 8) + byte(self.time_low) +
byte(self.time_mid >> 8) + byte(self.time_mid) +
byte(self.time_hi_ver >> 8) + byte(self.time_hi_ver) +
byte(self.clock_hi_res) + byte(self.clock_low) +
byte(self.node >> 40) + byte(self.node >> 32) +
byte(self.node >> 24) + byte(self.node >> 16) +
byte(self.node >> 8) + byte(self.node))
def set_bytes(self, bytes):
values = map(ord, bytes)
self.time_low = ((values[0] << 24) + (values[1] << 16) +
(values[2] << 8) + values[3])
self.time_mid = (values[4] << 8) + values[5]
self.time_hi_ver = (values[6] << 8) + values[7]
self.clock_hi_res = values[8]
self.clock_low = values[9]
self.node = ((values[10] << 40) + (values[11] << 32) +
(values[12] << 24) + (values[13] << 16) +
(values[14] << 8) + values[15])
bytes = property(get_bytes, set_bytes)
def get_urn(self):
return 'urn:uuid:%08x-%04x-%04x-%02x%02x-%012x' % (
self.time_low, self.time_mid, self.time_hi_ver,
self.clock_hi_res, self.clock_low, self.node)
urn = property(get_urn)
def get_variant(self):
if not self.clock_hi_res & 0x80:
return RESERVED_NCS
elif not self.clock_hi_res & 0x40:
return RFC_4122
elif not self.clock_hi_res & 0x20:
return RESERVED_MICROSOFT
else:
return RESERVED_FUTURE
def set_variant(self, variant):
if variant == RESERVED_NCS:
self.clock_hi_res &= 0x7f
elif variant == RFC_4122:
self.clock_hi_res &= 0x3f
self.clock_hi_res |= 0x80
elif variant == RESERVED_MICROSOFT:
self.clock_hi_res &= 0x1f
self.clock_hi_res |= 0xc0
elif variant == RESERVED_FUTURE:
self.clock_hi_res &= 0x1f
self.clock_hi_res |= 0xe0
else:
raise ValueError('illegal variant identifier')
variant = property(get_variant, set_variant)
def get_version(self):
return self.time_hi_ver >> 12
def set_version(self, version):
assert 1 <= version <= 5, ValueError('illegal version number')
self.time_hi_ver &= 0x0fff
self.time_hi_ver |= (version << 12)
version = property(get_version, set_version)
def unixgetaddr(program):
"""Get the hardware address on a Unix machine."""
from os import popen
for line in popen(program):
words = line.lower().split()
if 'hwaddr' in words:
addr = words[words.index('hwaddr') + 1]
return int(addr.replace(':', ''), 16)
if 'ether' in words:
addr = words[words.index('ether') + 1]
return int(addr.replace(':', ''), 16)
def wingetaddr(program):
"""Get the hardware address on a Windows machine."""
from os import popen
for line in popen(program + ' /all'):
if line.strip().lower().startswith('physical address'):
addr = line.split(':')[-1].strip()
return int(addr.replace('-', ''), 16)
def getaddr():
"""Get the hardware address as a 48-bit integer."""
from os.path import join, isfile
for dir in ['/sbin', '/usr/sbin', r'c:\windows',
r'c:\windows\system', r'c:\windows\system32']:
if isfile(join(dir, 'ifconfig')):
return unixgetaddr(join(dir, 'ifconfig'))
if isfile(join(dir, 'ipconfig.exe')):
return wingetaddr(join(dir, 'ipconfig.exe'))
def uuid1():
"""Generate a UUID based on the time and hardware address."""
from time import time
from random import randrange
nanoseconds = int(time() * 1e9)
# 0x01b21dd213814000 is the number of 100-ns intervals between the
# UUID epoch 1582-10-15 00:00:00 and the Unix epoch 1970-01-01 00:00:00.
timestamp = int(nanoseconds/100) + 0x01b21dd213814000
clock = randrange(1<<16) # don't use stable storage
time_low = timestamp & (0x100000000 - 1)
time_mid = (timestamp >> 32) & 0xffff
time_hi_ver = (timestamp >> 48) & 0x0fff
clock_low = clock & 0xff
clock_hi_res = (clock >> 8) & 0x3f
node = getaddr()
uuid = UUID(time_low, time_mid, time_hi_ver, clock_low, clock_hi_res, node)
uuid.variant = RFC_4122
uuid.version = 1
return uuid
def uuid3(namespace, name):
"""Generate a UUID from the MD5 hash of a namespace UUID and a name."""
try:
from hashlib import md5
except ImportError:
from md5 import md5
uuid = UUID(0, 0, 0, 0, 0, 0)
uuid.bytes = md5(namespace.bytes + name).digest()[:16]
uuid.variant = RFC_4122
uuid.version = 3
return uuid
def uuid4():
"""Generate a random UUID."""
try:
from os import urandom
except:
from random import randrange
uuid = UUID(randrange(1<<32L), randrange(1<<16), randrange(1<<16),
randrange(1<<8), randrange(1<<8), randrange(1<<48L))
else:
uuid = UUID(0, 0, 0, 0, 0, 0)
uuid.bytes = urandom(16)
uuid.variant = RFC_4122
uuid.version = 4
return uuid
def uuid5(namespace, name):
"""Generate a UUID from the SHA-1 hash of a namespace UUID and a name."""
try:
from hashlib import sha1
except ImportError:
from sha import sha as sha1
uuid = UUID(0, 0, 0, 0, 0, 0)
uuid.bytes = sha1(namespace.bytes + name).digest()[:16]
uuid.variant = RFC_4122
uuid.version = 5
return uuid
NAMESPACE_DNS = UUID('{6ba7b810-9dad-11d1-80b4-00c04fd430c8}')
NAMESPACE_URL = UUID('{6ba7b811-9dad-11d1-80b4-00c04fd430c8}')
NAMESPACE_OID = UUID('{6ba7b812-9dad-11d1-80b4-00c04fd430c8}')
NAMESPACE_X500 = UUID('{6ba7b814-9dad-11d1-80b4-00c04fd430c8}')