Current Path :
/
lib64
/
python2.7
/
site-packages
/
mx
/
Tools
/
Or
Select Your Path :
Upload File :
New :
File
Dir
//lib64/python2.7/site-packages/mx/Tools/Tools.py
""" Tools - Add-ons for Python written in C for performance. Copyright (c) 2000, Marc-Andre Lemburg; mailto:mal@lemburg.com Copyright (c) 2000-2011, eGenix.com Software GmbH; mailto:info@egenix.com See the documentation for further information on copyrights, or contact the author. All Rights Reserved. """#" # Import C extensions' symbols from mxTools import * from mxTools import __version__ # Needed Python imports import operator,types,time,sys,os,re ############################################################################# # # Experimental function prototypes written in Python # def sortedby(sequence,*indices): """ sortedby(sequence,*indices) Returns a list representing the sequence sorted ascending by the fields pointed to by the additional arguments (indices). sequence must be at least two-dimensional, e.g. a list of tuples. """ if len(sequence) == 0: return [] x = apply(tuples,tuple(extract(lists(sequence),indices))+(sequence,)) x.sort() return map(get,x,(-1,)*len(x)) def projection(sequence,*indices): """ projection(sequence,*indices) Experimental function that extracts columns from tables (sequence of sequences). If only one index is given, a list of all elements in that dimension is returned. For more indices, the list will contain tuples with entries for each given dimension. """ if len(sequence) == 0: return [] if len(indices) == 1: return lists(sequence)[indices[0]] else: return tuples(extract(lists(sequence),indices)) def frange(x,y,ticks): """frange(x,y,ticks) Returns a list of ticks equidistant floating point values from the interval [x,y] such that the first is equal to x and the last equal to y. """ l = [x] * ticks fticks = float(ticks-1) diff = y - x for i,value in irange(l): l[i] = value + diff*(i/fticks) return l def issequence(obj, isSequenceType=operator.isSequenceType, InstanceType=types.InstanceType): """issequence(obj) Returns 1 iff obj defines the sequence protocol, o otherwise. For instances at least __getitem__ must be defined. """ rc = isSequenceType(obj) if rc and type(obj) == InstanceType: rc = hasattr(obj,'__getitem__') return rc def defined(name): """ defined(name) Return 1/0 depending on whether name is a defined symbol in the caller's namespace. """ frame = sys.cur_frame(1) # Look up the symbol name ok = frame.f_locals.has_key(name) or \ frame.f_globals.has_key(name) or \ frame.f_builtins.has_key(name) del frame return ok def acqchain(obj): """ acqchain(obj) Returns a list of object representing the acquisition chain that the new builtin acquire() would scan. The order is top to bottom, with obj always being the last entry in the list. """ l = [] append = l.append while obj: append(obj) obj = obj.baseobj l.reverse() return l # Truth constants True = (1==1) False = (1==0) def reval(codestring,locals=None, eval=eval): """ Restricted execution eval(). After a suggestion by Tim Peters on comp.lang.python. locals can be given as local namespace to use when evaluating the codestring. """ if locals is not None: return eval(codestring,{'__builtins__':{}},locals) else: return eval(codestring,{'__builtins__':{}}) def docstring(): """ Returns the doc string of the calling function. Note that this only works for Python functions since it relies on the code object of the calling function. """ return cur_frame(1).f_code.co_consts[0] # Aliases for some of the APIs nonzero = truth # XXX This should probably be moved to mx.TextTools... _hexcode = ("00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "0a", "0b", "0c", "0d", "0e", "0f", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "1a", "1b", "1c", "1d", "1e", "1f", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "2a", "2b", "2c", "2d", "2e", "2f", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "3a", "3b", "3c", "3d", "3e", "3f", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "4a", "4b", "4c", "4d", "4e", "4f", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "5a", "5b", "5c", "5d", "5e", "5f", "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "6a", "6b", "6c", "6d", "6e", "6f", "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", "7a", "7b", "7c", "7d", "7e", "7f", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", "8a", "8b", "8c", "8d", "8e", "8f", "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "9a", "9b", "9c", "9d", "9e", "9f", "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", "a8", "a9", "aa", "ab", "ac", "ad", "ae", "af", "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", "b8", "b9", "ba", "bb", "bc", "bd", "be", "bf", "c0", "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9", "ca", "cb", "cc", "cd", "ce", "cf", "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "d8", "d9", "da", "db", "dc", "dd", "de", "df", "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7", "e8", "e9", "ea", "eb", "ec", "ed", "ee", "ef", "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", "fa", "fb", "fc", "fd", "fe", "ff") def hexencode(data, hexcode=_hexcode,ord=ord): """ HEX encode a data string. Encoding is done character per character using two byte lower-case HEX characters. """ l = [] append = l.append for c in data: append(hexcode[ord(c)]) return ''.join(l) ############################################################################# # # Utilities written in Python # def scanfiles(files, dir=None, levels=0, filefilter=None, filedict=None,join=os.path.join,isdir=os.path.isdir, listdir=os.listdir): """ Build a list of filenames starting with the filenames and directories given in files. The filenames in are made absolute relative to dir. dir defaults to the current working directory if not given. If levels is greater than 0, directories in the files list are recursed into up the given number of levels. If filefilter is given, as re match object, then all filenames (the absolute names) are matched against it. Filenames which do not match the criteria are removed from the list. Note that directories are not included in the resulting list. All filenames are non-directories. """ if not files: return files # Make file names absolute and eliminate duplicates if dir is None: dir = os.getcwd() if filedict is None: filedict = {} recursing = 0 else: recursing = 1 dirs = [] for file in files: abspath = join(dir, file) if isdir(abspath): dirs.append(abspath) elif filefilter is not None and \ filefilter.match(abspath) is None: continue else: filedict[abspath] = 1 # Recurse into subdirs if levels > 0: for dir in dirs: scanfiles(listdir(dir), dir, levels+1, filefilter, filedict) # Fast path: don't return file list inside recursion if not recursing: return filedict.keys() class DictScan: """ Forward iterator for Python dictionaries. Note that no precaution is taken to insure that the dictionary is not modified in between calls to the __getitem__ method. It is the user's responsibility to ensure that the dictionary is neither modified, nor changed in size, since this would result in skipping entries or double occurance of items in the scan. The iterator inherits all methods from the underlying dictionary for convenience. """ def __init__(self,dictionary): self.dictionary = dictionary self.position = 0 def reset(self): """ Resets the iterator to its initial position. """ self.position = 0 def __getitem__(self,index, dictscan=dictscan): """ "for x in iterator" interface. Note: for loops are cancelled by raising an IndexError. """ # This may raise an IndexError which we *don't* catch # on purpose k,v,self.position = dictscan(self.dictionary,self.position) return k,v def __getattr__(self,name, getattr=getattr): """ Inherit all other methods from the underlying dictionary. """ return getattr(self.dictionary,name) # Alias DictItems = DictScan _integerRE = re.compile('\s*(-?\d+)\s*$') _integerRangeRE = re.compile('\s*(-?\d+)\s*-\s*(-?\d+)\s*$') def srange(s, integer=_integerRE, integerRange=_integerRangeRE): """ Converts a textual representation of integer numbers and ranges to a Python list. Supported formats: 2,3,4,2-10,-1 - -3, 5 - -2 Values are appended to the created list in the order specified in the string. """ l = [] append = l.append for entry in s.split(','): m = integer.match(entry) if m: append(int(m.groups()[0])) continue m = integerRange.match(entry) if m: start,end = map(int,m.groups()) l[len(l):] = range(start,end+1) return l def fqhostname(hostname=None, ip=None): """ Tries to return the fully qualified (hostname, ip) for the given hostname. If hostname is None, the default name of the local host is chosen. ip then defaults to '127.0.0.1' if not given. The function modifies the input data according to what it finds using the socket module. If that doesn't work the input data is returned unchanged. """ try: import socket except ImportError: if hostname is None: hostname = os.environ.get('HOSTNAME',None) if ip is None: ip = '127.0.0.1' return hostname, ip try: if hostname is None: if ip is None: ip = '127.0.0.1' hostname = socket.gethostname() ip = socket.gethostbyname(hostname) hostname = socket.gethostbyaddr(ip)[0] except socket.error: pass return hostname,ip def splitdomain(hostname=None): """ Tries to determine the domain name of the given hostname and returns a tuple (host, domain). If hostname is not given, the default name of the local host is chosen as reference. """ hostname, ip = fqhostname(hostname) l = hostname.split('.', 1) if len(l) == 1: return (hostname, '') return tuple(l) def username(default=''): """ Return the user name of the user running the current process. If no user name can be determined, default is returned. """ import getpass try: return getpass.getuser() except: return default ###################################################################### # # Old lib/Tools.py module... # # XXX Some of these functions are obsolete. # def tb_lineno(tb): """ Calculate the correct line number of the traceback given in tb (even with -O on) """ c = tb.tb_frame.f_code tab = c.co_lnotab line = c.co_firstlineno stopat = tb.tb_lasti addr = 0 for i in range(0,len(tab),2): addr = addr + ord(tab[i]) if addr > stopat: break line = line + ord(tab[i+1]) return line def execpyc(filename,globals=None,locals=None): """ Execute a byte compiled file filename in globals, locals """ import marshal f = open(filename,'rb') f.read(8) # skip header (id check omitted) code = marshal.load(f) exec code in globals,locals def loadpyc(filename): """ Load the code from a byte compiled file filename and return it as code object. """ import marshal f = open(filename,'rb') f.read(8) # skip header (id check omitted) return marshal.load(f) def import_code(name,code): """ Imports a code object as module name. Returns the previously registered module in case the module name was already imported. name has to be the full package name (pkg.pkg.mod) for the module; package local names are not supported and will result in top-level modules to be created. """ import imp,sys if sys.modules.has_key(name): return sys.modules[name] m = imp.new_module(name) exec code in m.__dict__ sys.modules[name] = m return m def pairs2tuples(tab): """ Format a sequence of adjacent pairs into a list of 2-tuples, e.g. 'abcdef' gives [('a','b'),('c','d'), ('e','f')] """ l = map( None, tab[:-1], tab[1:], (1,0)*(len(tab)/2) ) l = filter( lambda x:x[2], l) l = map( lambda x:x[:2], l) return l def exec_frame(level=0, exc_info=sys.exc_info): """ Return the execution frame level positions up the execution stack (defaulting to the current frame). WARNING: Storing the frame in variables will cause circular references which could result in the frames and associated objects to live forever. """ try: 1/0 except: frame = exc_info()[2].tb_frame.f_back if level: for i in trange(level): frame = frame.f_back return frame def freeze(classobj): """ Add all known attributes of base classes to classobj's attribute dictionary - does not overwrite attributes """ dict = classobj.__dict__ if dict.has_key('__frozen__'): return # This won't overwrite anything, but still update the class # dictionary in place (frozen() returns a dictionary that includes # dict's entries among others): dict.update(frozen(classobj)) dict['__frozen__'] = 1 # XXX How to optimize unnecessary failing lookups in baseclasses ? def frozen(classobj): """ Return a dictionary that contains all known attributes of classobj - uses cached versions if available """ dict = {} for c in reverse(classobj.__bases__): otherdict = c.__dict__ if not otherdict.has_key('__frozen__'): frozendict = frozen(c) else: frozendict = otherdict dict.update(frozendict) dict.update(classobj.__dict__) return dict def attributes(obj,of_class=None, d=None): """ Find all attributes that are accessible through obj and return them as dictionary. If of_class is given, only those attributes are returned that are instances of that class. The function mimics the inheritance scheme used by Python. """ if d is None: d = {} # First the class attributes classobj = getattr(obj,'__class__',None) if classobj is not None: class_attributes(classobj,of_class,d) # Then the instance attributes if of_class is not None: for k,v in obj.__dict__.items(): if isinstance(v,of_class): d[k] = v else: d.update(obj.__dict__) return d def class_attributes(classobj,of_class=None, d=None): """ Find all attributes that are accessible through classobj and return them as dictionary. If of_class is given, only those attributes are returned that are instances of that class. The function mimics the inheritance scheme used by Python. """ if d is None: d = {} # First the base classes bases = getattr(classobj,'__bases__',None) if bases is not None: for b in reverse(bases): class_attributes(b,of_class,d) # Then the class itself if of_class is not None: for k,v in classobj.__dict__.items(): if isinstance(v,of_class): d[k] = v else: d.update(classobj.__dict__) return d def inst_attributes(obj,of_class=None): """ Find all instance attributes of obj that are instances of of_class and return them as dictionary. """ d = {} if of_class: for k,v in obj.__dict__.items(): if isinstance(v,of_class): d[k] = v else: d.update(obj.__dict__) return d def localize(instance): """ Add all known attributes of the instance's class and direct base classes to its attribute dictionary, binding methods if necessary - only one level deep - does not overwrite attributes *WARNING:* this function introduces lots of circular references (one for each method) !!! Be sure to clear instance.__dict__ before unscoping instance !!! """ classobj = instance.__class__ classes = (classobj,) + classobj.__bases__ dict = instance.__dict__ for c in classes: for a in c.__dict__.keys(): if not dict.has_key(a): dict[a] = getattr(instance,a) def localized(instance): """ Add all known attributes of the instance's class and direct base classes to a dictionary, binding methods if necessary, and return it. - only one level deep *WARNING:* this function introduces lots of circular references !!! Be sure to clear the returned dictionars before unscoping it !!! """ classobj = instance.__class__ classes = (classobj,) + classobj.__bases__ dict = instance.__dict__.copy() for c in classes: for a in c.__dict__.keys(): if not dict.has_key(a): dict[a] = getattr(instance,a) return dict def ascii2int(str, base=10, int=int): """ Convert a string to an integer. Works like int() except that in case of an error no exception raised but 0 is returned; this makes it useful in conjunction with map(). """ try: return int(str, base) except: return 0 def str2time(x, time=time,ascii2int=ascii2int): """ Convert a textual representation of date/time into an internal time.time() value using some assumptions on abbreviations. - returns negative numbers to indictate errors - knows about DST (makes small errors near the time of switching) - centuries can be omitted: 0-69 becomes 20xx, 70-99 19xx Known formats: - 1.1.90, 01.01.90, 1.1.1990 (date only, time defaults to 0:00:00) - 1.1. (current year is appended, 0:00:00) - 1.1.90 14:00 - 14:00 (today is used as date) """ now = time.localtime(time.time()) ti = now[3:5] da = now[0:3] try: x = x.split() if len(x) == 0: return -3 d = x[0].split('.') t = x[-1].split(':') if len(t) > 1: # Date and time if len(t) < 2: return -1 ti = map(ascii2int,t) if len(ti) == 2: ti.append(0) elif len(ti) > 3: ti = ti[:3] ti = tuple(ti) else: # No time given, presume 0:00:00 ti = (0,0,0) if len(d) > 1: # Date given if len(d) != 3: return -2 d.reverse() da = tuple([int(value) for value in d]) if da[0] == 0: # Year is missing da = (now[0],) + da[1:3] elif da[0] < 100: # Century is missing (note: this is bad !) if da[0] < 70: # XXX da = (2000+da[0],) + da[1:3] else: da = (1900+da[0],) + da[1:3] if 1 == len(d) == len(t): return -3 try: tm = time.mktime(da+ti+(0,0,0)) except: #sys.stderr.write('Wrong date: %s was converted to %s'%(x,`da+ti+(0,0,0,0)`)) return -4 if time.localtime(tm)[8] == 1: # DST is on, adjust time tm = tm - 3600 return tm except: return -9 def filecontent(filename,default=''): """ Return the file's content as a string, default in case there's an error """ try: f = open(filename,'rb') except IOError: return default c = f.read() f.close() return c def long2str(x): """ Convert long integer x to a bytes string. """ l = ( x & 0xff, (x >> 8) & 0xff, (x >> 16) & 0xff, (x >> 24) & 0xff) return ''.join([chr(x) for x in l]) ### Hack to enable module finalization class ModuleFinalization: def __init__(self,function): self.fini = function def __del__(self): self.fini() # example: #def _cleanup(): # print 'away we go...' #_fini = ModuleFinalization(_cleanup) def func_info(level=1): """ func_info() Returns a tuple (name,filename) giving the name of the calling function (*) and the filename where it is defined. Note that this only works if the calling function is a Python function or method (because only these create new execution frames). When called from e.g. a builtin function like map(), it will return information about the function from where the builtin function was called. (*) level indicates how far up the calling stack to look for the information. Default is one level meaning: the calling function. """ try: 1/0 except: frame = sys.exc_info()[2].tb_frame for i in trange(level): frame = frame.f_back name = frame.f_code.co_name filename = frame.f_code.co_filename del frame # you never know... return (name,filename) def func_sig(func): """func_sig(func) Returns the signature of a Python function/method as string. Keyword initializers are also shown using repr(). Representations longer than 100 bytes are truncated. XXX Anonymous argument ((a,b,c)=(1,2,3)) are not supported and probably never will be since they require disassembling the byte code which is bound to fail once byte code optimizers find their way into every Pythoneers home... """ if hasattr(func,'im_func'): # func is a method func = func.im_func code = func.func_code fname = code.co_name callargs = code.co_argcount # XXX Uses hard coded values taken from Include/compile.h args = list(code.co_varnames[:callargs]) if func.func_defaults: i = len(args) - len(func.func_defaults) for default in func.func_defaults: try: r = repr(default) except: r = '<repr-error>' if len(r) > 100: r = r[:100] + '...' arg = args[i] if arg[0] == '.': # anonymous arguments arg = '(...)' args[i] = '%s=%s' % (arg,r) i = i + 1 if code.co_flags & 0x0004: # CO_VARARGS args.append('*'+code.co_varnames[callargs]) callargs = callargs + 1 if code.co_flags & 0x0008: # CO_VARKEYWORDS args.append('**'+code.co_varnames[callargs]) callargs = callargs + 1 return '%s(%s)' % (fname,', '.join(args)) def func_call(level=1): """ func_call() Returns a string explaining which parameters where passed to the calling function (*) and from which file and line number it was invoked. Same comments as for func_info(). Note that line number information is only correct when running Python in non-optimized mode (i.e. without -O). Sample return string: 'test(a=1, b=2, c=3, args=()) # called from "Tools.py":353' (*) level indicates how far up the calling stack to look for the information. Default is one level meaning: the calling function. """ try: 1/0 except: frame = sys.exc_info()[2].tb_frame for i in trange(level): frame = frame.f_back #import hack; hack.show(frame,5) code = frame.f_code fname = code.co_name l = [] callargs = code.co_argcount # XXX Uses hard coded values taken from Include/compile.h if code.co_flags & 0x0004: # CO_VARARGS callargs = callargs + 1 if code.co_flags & 0x0008: # CO_VARKEYWORDS callargs = callargs + 1 for v in code.co_varnames[:callargs]: try: r = repr(frame.f_locals[v]) except: r = '<repr-error>' if len(r) > 100: r = r[:100] + '...' l.append('%s=%s' % (v,r)) if frame.f_back: where = '# called from "%s":%i' % \ (frame.f_back.f_code.co_filename,frame.f_back.f_lineno) else: where = '# called from <toplevel>' del frame,code # you never know... return '%s(%s) %s' % (fname,', '.join(l), where) def localize_builtins(): """ Copy all builtins to the caller's locals. This is done in a non-overwriting fashion. """ try: 1/0 except: frame = sys.exc_info()[2].tb_frame.f_back builtins = frame.f_builtins locals = frame.f_locals for k,v in builtins.items(): if not locals.has_key(k): locals[k] = v del frame,builtins,locals # better safe than sorry _basemethod_cache = {} def basemethod(object,method=None, cache = _basemethod_cache,InstanceType=types.InstanceType, ClassType=types.ClassType): """ Return the unbound method that is defined *after* method in the inheritance order of object with the same name as method (usually called base method or overridden method). object can be an instance, class or bound method. method, if given, may be a bound or unbound method. If it is not given, object must be bound method. Note: Unbound methods must be called with an instance as first argument. The function uses a cache to speed up processing. Changes done to the class structure after the first hit will not be noticed by the function. XXX Rewrite in C to increase performance. """ if method is None: method = object object = method.im_self defclass = method.im_class name = method.__name__ if type(object) is InstanceType: objclass = object.__class__ elif type(object) is ClassType: objclass = object else: objclass = object.im_class # Check cache cacheentry = (objclass, name) basemethod = cache.get(cacheentry, None) if basemethod is not None: if not issubclass(objclass, basemethod.im_class): if __debug__: sys.stderr.write( 'basemethod(%s, %s): cached version (%s) mismatch: ' '%s !-> %s\n' % (object, method, basemethod, objclass, basemethod.im_class)) else: return basemethod # Find defining class path = [objclass] while 1: if not path: raise AttributeError,method c = path[0] del path[0] if c.__bases__: # Prepend bases of the class path[0:0] = list(c.__bases__) if c is defclass: # Found (first occurance of) defining class in inheritance # graph break # Scan rest of path for the next occurance of a method with the # same name while 1: if not path: raise AttributeError,name c = path[0] basemethod = getattr(c, name, None) if basemethod is not None: # Found; store in cache and return cache[cacheentry] = basemethod return basemethod del path[0] raise AttributeError,'method %s' % name def lookup_path(classobj): """ Return a list representing the lookup path taken by getattr() whenever an attribute from classobj is requested. The path consists of all class objects passed during lookup in the right order. """ path = [classobj] for i,c in reverse(irange(path)): if c.__bases__: l = [] for bc in c.__bases__: l[len(l):] = lookup_path(bc) path[i+1:i+1] = l return path hexcode = tuple('0123456789abcdefghijklmnopqrstuvwxyz') code64 = tuple('ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' '0123456789+/') code256 = tuple(map(chr,range(256))) def base(x,b,code=hexcode, # Locals: divmod=divmod): """ Return a string representation of integer x in base b. Uses code as encoding table (defaults to an extended HEX table). """ if x == 0: return '0' l = [] append = l.append while x > 0: x,y = divmod(x,b) append(code[y]) l.reverse() return ''.join(l) def filedate(path, stat=os.stat): """ Return the modification date/time as DateTime instance. Needs mxDateTime to be installed. """ from mx import DateTime return DateTime.localtime(stat(path)[8]) def filesize(path, stat=os.stat): """ Return the file size in bytes """ return stat(path)[6] def abspath(path, expandvars=os.path.expandvars,expanduser=os.path.expanduser, join=os.path.join,getcwd=os.getcwd): """ Return the corresponding absolute path for path. path is expanded in the usual shell ways before joining it with the current working directory. """ try: path = expandvars(path) except AttributeError: pass try: path = expanduser(path) except AttributeError: pass return join(getcwd(),path) def _addlinebreaks(data, column, linebreak='\012'): """ Break data into multiple lines at column. Uses linebreak as end-of-line indicator (defaults to LF). """ from cStringIO import StringIO infile = StringIO(data) outfile = StringIO() read = infile.read write = outfile.write chunk = read(column) while chunk: write(chunk) write(linebreak) chunk = read(column) return outfile.getvalue() def _uu_encode(data, filename='<data>', mode=0666): from cStringIO import StringIO from binascii import b2a_uu infile = StringIO(data) outfile = StringIO() read = infile.read write = outfile.write # Encode write('begin %o %s\n' % (mode & 0777, filename)) chunk = read(45) while chunk: write(b2a_uu(chunk)) chunk = read(45) write(' \nend\n') return outfile.getvalue() def _uu_decode(data): from cStringIO import StringIO from binascii import a2b_uu infile = StringIO(input) outfile = StringIO() readline = infile.readline write = outfile.write # Find start of encoded data while 1: s = readline() #print '...',s, if not s: raise ValueError, 'Missing "begin" line in input data' if s[:5] == 'begin': break # Decode while 1: s = readline() if not s or \ s == 'end\n': break try: data = a2b_uu(s) except binascii.Error, v: # Workaround for broken uuencoders by /Fredrik Lundh nbytes = (((ord(s[0])-32) & 63) * 4 + 5) / 3 data = a2b_uu(s[:nbytes]) #sys.stderr.write("Warning: %s\n" % str(v)) write(data) if not s: raise ValueError, 'Truncated input data' return outfile.getvalue() def encodedata(data, encoding): """ Encode data using the given encoding. Possible values for encoding include: 'base64' - BASE 64 encoding 'hex' - HEX encoding (no line breaks) 'hexlines' - HEX encoding (with CR line breaks) In Python 2.0 and up, encoding may also be an encoding supported natively by Python via the codec registry. """ encoding = encoding.lower() if encoding == 'base64': import base64 return base64.encodestring(data) elif encoding == 'hex' or \ encoding == 'hexlines': from mx.TextTools import str2hex result = str2hex(data) if encoding == 'hexlines': return _addlinebreaks(result, 72) return result else: # This works in Python >=2.0 only try: return data.encode(encoding) except AttributeError: raise ValueError, 'unknown encoding "%s"' % encoding def decodedata(data, encoding): """ Decode data using the given encoding. Possible values for encoding include: 'base64' - BASE 64 encoding 'hex' - HEX encoding (no line breaks) 'hexlines' - HEX encoding (with CR line breaks) In Python 2.0 and up, encoding may also be an encoding supported natively by Python via the codec registry. """ encoding = encoding.lower() if encoding == 'base64': import base64 return base64.decodestring(data) elif encoding == 'hex' or \ encoding == 'hexlines': from mx.TextTools import hex2str # Remove whitespace l = data.split() data = ''.join(l) # Decode return hex2str(data) else: # This works in Python >=2.0 only try: from codecs import lookup except ImportError: raise ValueError, 'unknown encoding "%s"' % encoding else: decode = lookup(encoding)[1] return decode(data)
