1 files changed, 228 insertions, 0 deletions
diff --git a/lib/python2.7/UserString.py b/lib/python2.7/UserString.py
new file mode 100755
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+++ b/lib/python2.7/UserString.py
@@ -0,0 +1,228 @@
+#!/usr/bin/env python
+## vim:ts=4:et:nowrap
+"""A user-defined wrapper around string objects
+
+Note: string objects have grown methods in Python 1.6
+This module requires Python 1.6 or later.
+"""
+import sys
+import collections
+
+__all__ = ["UserString","MutableString"]
+
+class UserString(collections.Sequence):
+    def __init__(self, seq):
+        if isinstance(seq, basestring):
+            self.data = seq
+        elif isinstance(seq, UserString):
+            self.data = seq.data[:]
+        else:
+            self.data = str(seq)
+    def __str__(self): return str(self.data)
+    def __repr__(self): return repr(self.data)
+    def __int__(self): return int(self.data)
+    def __long__(self): return long(self.data)
+    def __float__(self): return float(self.data)
+    def __complex__(self): return complex(self.data)
+    def __hash__(self): return hash(self.data)
+
+    def __cmp__(self, string):
+        if isinstance(string, UserString):
+            return cmp(self.data, string.data)
+        else:
+            return cmp(self.data, string)
+    def __contains__(self, char):
+        return char in self.data
+
+    def __len__(self): return len(self.data)
+    def __getitem__(self, index): return self.__class__(self.data[index])
+    def __getslice__(self, start, end):
+        start = max(start, 0); end = max(end, 0)
+        return self.__class__(self.data[start:end])
+
+    def __add__(self, other):
+        if isinstance(other, UserString):
+            return self.__class__(self.data + other.data)
+        elif isinstance(other, basestring):
+            return self.__class__(self.data + other)
+        else:
+            return self.__class__(self.data + str(other))
+    def __radd__(self, other):
+        if isinstance(other, basestring):
+            return self.__class__(other + self.data)
+        else:
+            return self.__class__(str(other) + self.data)
+    def __mul__(self, n):
+        return self.__class__(self.data*n)
+    __rmul__ = __mul__
+    def __mod__(self, args):
+        return self.__class__(self.data % args)
+
+    # the following methods are defined in alphabetical order:
+    def capitalize(self): return self.__class__(self.data.capitalize())
+    def center(self, width, *args):
+        return self.__class__(self.data.center(width, *args))
+    def count(self, sub, start=0, end=sys.maxint):
+        return self.data.count(sub, start, end)
+    def decode(self, encoding=None, errors=None): # XXX improve this?
+        if encoding:
+            if errors:
+                return self.__class__(self.data.decode(encoding, errors))
+            else:
+                return self.__class__(self.data.decode(encoding))
+        else:
+            return self.__class__(self.data.decode())
+    def encode(self, encoding=None, errors=None): # XXX improve this?
+        if encoding:
+            if errors:
+                return self.__class__(self.data.encode(encoding, errors))
+            else:
+                return self.__class__(self.data.encode(encoding))
+        else:
+            return self.__class__(self.data.encode())
+    def endswith(self, suffix, start=0, end=sys.maxint):
+        return self.data.endswith(suffix, start, end)
+    def expandtabs(self, tabsize=8):
+        return self.__class__(self.data.expandtabs(tabsize))
+    def find(self, sub, start=0, end=sys.maxint):
+        return self.data.find(sub, start, end)
+    def index(self, sub, start=0, end=sys.maxint):
+        return self.data.index(sub, start, end)
+    def isalpha(self): return self.data.isalpha()
+    def isalnum(self): return self.data.isalnum()
+    def isdecimal(self): return self.data.isdecimal()
+    def isdigit(self): return self.data.isdigit()
+    def islower(self): return self.data.islower()
+    def isnumeric(self): return self.data.isnumeric()
+    def isspace(self): return self.data.isspace()
+    def istitle(self): return self.data.istitle()
+    def isupper(self): return self.data.isupper()
+    def join(self, seq): return self.data.join(seq)
+    def ljust(self, width, *args):
+        return self.__class__(self.data.ljust(width, *args))
+    def lower(self): return self.__class__(self.data.lower())
+    def lstrip(self, chars=None): return self.__class__(self.data.lstrip(chars))
+    def partition(self, sep):
+        return self.data.partition(sep)
+    def replace(self, old, new, maxsplit=-1):
+        return self.__class__(self.data.replace(old, new, maxsplit))
+    def rfind(self, sub, start=0, end=sys.maxint):
+        return self.data.rfind(sub, start, end)
+    def rindex(self, sub, start=0, end=sys.maxint):
+        return self.data.rindex(sub, start, end)
+    def rjust(self, width, *args):
+        return self.__class__(self.data.rjust(width, *args))
+    def rpartition(self, sep):
+        return self.data.rpartition(sep)
+    def rstrip(self, chars=None): return self.__class__(self.data.rstrip(chars))
+    def split(self, sep=None, maxsplit=-1):
+        return self.data.split(sep, maxsplit)
+    def rsplit(self, sep=None, maxsplit=-1):
+        return self.data.rsplit(sep, maxsplit)
+    def splitlines(self, keepends=0): return self.data.splitlines(keepends)
+    def startswith(self, prefix, start=0, end=sys.maxint):
+        return self.data.startswith(prefix, start, end)
+    def strip(self, chars=None): return self.__class__(self.data.strip(chars))
+    def swapcase(self): return self.__class__(self.data.swapcase())
+    def title(self): return self.__class__(self.data.title())
+    def translate(self, *args):
+        return self.__class__(self.data.translate(*args))
+    def upper(self): return self.__class__(self.data.upper())
+    def zfill(self, width): return self.__class__(self.data.zfill(width))
+
+class MutableString(UserString, collections.MutableSequence):
+    """mutable string objects
+
+    Python strings are immutable objects.  This has the advantage, that
+    strings may be used as dictionary keys.  If this property isn't needed
+    and you insist on changing string values in place instead, you may cheat
+    and use MutableString.
+
+    But the purpose of this class is an educational one: to prevent
+    people from inventing their own mutable string class derived
+    from UserString and than forget thereby to remove (override) the
+    __hash__ method inherited from UserString.  This would lead to
+    errors that would be very hard to track down.
+
+    A faster and better solution is to rewrite your program using lists."""
+    def __init__(self, string=""):
+        from warnings import warnpy3k
+        warnpy3k('the class UserString.MutableString has been removed in '
+                    'Python 3.0', stacklevel=2)
+        self.data = string
+
+    # We inherit object.__hash__, so we must deny this explicitly
+    __hash__ = None
+
+    def __setitem__(self, index, sub):
+        if isinstance(index, slice):
+            if isinstance(sub, UserString):
+                sub = sub.data
+            elif not isinstance(sub, basestring):
+                sub = str(sub)
+            start, stop, step = index.indices(len(self.data))
+            if step == -1:
+                start, stop = stop+1, start+1
+                sub = sub[::-1]
+            elif step != 1:
+                # XXX(twouters): I guess we should be reimplementing
+                # the extended slice assignment/deletion algorithm here...
+                raise TypeError, "invalid step in slicing assignment"
+            start = min(start, stop)
+            self.data = self.data[:start] + sub + self.data[stop:]
+        else:
+            if index < 0:
+                index += len(self.data)
+            if index < 0 or index >= len(self.data): raise IndexError
+            self.data = self.data[:index] + sub + self.data[index+1:]
+    def __delitem__(self, index):
+        if isinstance(index, slice):
+            start, stop, step = index.indices(len(self.data))
+            if step == -1:
+                start, stop = stop+1, start+1
+            elif step != 1:
+                # XXX(twouters): see same block in __setitem__
+                raise TypeError, "invalid step in slicing deletion"
+            start = min(start, stop)
+            self.data = self.data[:start] + self.data[stop:]
+        else:
+            if index < 0:
+                index += len(self.data)
+            if index < 0 or index >= len(self.data): raise IndexError
+            self.data = self.data[:index] + self.data[index+1:]
+    def __setslice__(self, start, end, sub):
+        start = max(start, 0); end = max(end, 0)
+        if isinstance(sub, UserString):
+            self.data = self.data[:start]+sub.data+self.data[end:]
+        elif isinstance(sub, basestring):
+            self.data = self.data[:start]+sub+self.data[end:]
+        else:
+            self.data =  self.data[:start]+str(sub)+self.data[end:]
+    def __delslice__(self, start, end):
+        start = max(start, 0); end = max(end, 0)
+        self.data = self.data[:start] + self.data[end:]
+    def immutable(self):
+        return UserString(self.data)
+    def __iadd__(self, other):
+        if isinstance(other, UserString):
+            self.data += other.data
+        elif isinstance(other, basestring):
+            self.data += other
+        else:
+            self.data += str(other)
+        return self
+    def __imul__(self, n):
+        self.data *= n
+        return self
+    def insert(self, index, value):
+        self[index:index] = value
+
+if __name__ == "__main__":
+    # execute the regression test to stdout, if called as a script:
+    import os
+    called_in_dir, called_as = os.path.split(sys.argv[0])
+    called_as, py = os.path.splitext(called_as)
+    if '-q' in sys.argv:
+        from test import test_support
+        test_support.verbose = 0
+    __import__('test.test_' + called_as.lower())