FM / python

/usr/lib/python3/dist-packages/twisted/python/

/usr/lib/python3/dist-packages/twisted/python

Name	Size	Mode	Actions
test/	-	0755	rm
_pydoctortemplates/	-	0755	rm
__pycache__/	-	0755	rm
compat.py	23194	0644	edit dl rm
components.py	14295	0644	edit dl rm
constants.py	544	0644	edit dl rm
context.py	4024	0644	edit dl rm
deprecate.py	26775	0644	edit dl rm
failure.py	26638	0644	edit dl rm
fakepwd.py	6138	0644	edit dl rm
filepath.py	58887	0644	edit dl rm
formmethod.py	11460	0644	edit dl rm
htmlizer.py	3541	0644	edit dl rm
lockfile.py	7718	0644	edit dl rm
log.py	22472	0644	edit dl rm
logfile.py	10083	0644	edit dl rm
modules.py	27141	0644	edit dl rm
monkey.py	2227	0644	edit dl rm
procutils.py	1419	0644	edit dl rm
randbytes.py	3959	0644	edit dl rm
rebuild.py	9268	0644	edit dl rm
reflect.py	19477	0644	edit dl rm
release.py	1192	0644	edit dl rm
roots.py	7404	0644	edit dl rm
runtime.py	6270	0644	edit dl rm
sendmsg.py	3420	0644	edit dl rm
shortcut.py	2253	0644	edit dl rm
syslog.py	3730	0644	edit dl rm
systemd.py	2834	0644	edit dl rm
text.py	5482	0644	edit dl rm
threadable.py	3297	0644	edit dl rm
threadpool.py	9840	0644	edit dl rm
twisted-completion.zsh	1371	0644	edit dl rm
url.py	244	0644	edit dl rm
urlpath.py	9084	0644	edit dl rm
usage.py	35010	0644	edit dl rm
util.py	27931	0644	edit dl rm
versions.py	322	0644	edit dl rm
win32.py	4317	0644	edit dl rm
zippath.py	9237	0644	edit dl rm
zipstream.py	9757	0644	edit dl rm
_appdirs.py	788	0644	edit dl rm
_inotify.py	3455	0644	edit dl rm
_oldstyle.py	2593	0644	edit dl rm
_release.py	18548	0644	edit dl rm
_setup.py	12953	0644	edit dl rm
_shellcomp.py	24830	0644	edit dl rm
_textattributes.py	9079	0644	edit dl rm
_tzhelper.py	3192	0644	edit dl rm
_url.py	253	0644	edit dl rm
__init__.py	674	0644	edit dl rm

Edit: /usr/lib/python3/dist-packages/twisted/python/_textattributes.py (9079B)

# -*- test-case-name: twisted.python.test.test_textattributes -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
This module provides some common functionality for the manipulation of
formatting states.

Defining the mechanism by which text containing character attributes is
constructed begins by subclassing L{CharacterAttributesMixin}.

Defining how a single formatting state is to be serialized begins by
subclassing L{_FormattingStateMixin}.

Serializing a formatting structure is done with L{flatten}.

@see: L{twisted.conch.insults.helper._FormattingState}
@see: L{twisted.conch.insults.text._CharacterAttributes}
@see: L{twisted.words.protocols.irc._FormattingState}
@see: L{twisted.words.protocols.irc._CharacterAttributes}
"""

from __future__ import print_function

from twisted.python.util import FancyEqMixin

class _Attribute(FancyEqMixin, object):
    """
    A text attribute.

Indexing a text attribute with a C{str} or another text attribute adds that
    object as a child, indexing with a C{list} or C{tuple} adds the elements as
    children; in either case C{self} is returned.

@type children: C{list}
    @ivar children: Child attributes.
    """
    compareAttributes = ('children',)

def __init__(self):
        self.children = []

def __repr__(self):
        return '<%s %r>' % (type(self).__name__, vars(self))

def __getitem__(self, item):
        assert isinstance(item, (list, tuple, _Attribute, str))
        if isinstance(item, (list, tuple)):
            self.children.extend(item)
        else:
            self.children.append(item)
        return self

def serialize(self, write, attrs=None, attributeRenderer='toVT102'):
        """
        Serialize the text attribute and its children.

@param write: C{callable}, taking one C{str} argument, called to output
            a single text attribute at a time.

@param attrs: A formatting state instance used to determine how to
            serialize the attribute children.

@type attributeRenderer: C{str}
        @param attributeRenderer: Name of the method on I{attrs} that should be
            called to render the attributes during serialization. Defaults to
            C{'toVT102'}.
        """
        if attrs is None:
            attrs = DefaultFormattingState()
        for ch in self.children:
            if isinstance(ch, _Attribute):
                ch.serialize(write, attrs.copy(), attributeRenderer)
            else:
                renderMeth = getattr(attrs, attributeRenderer)
                write(renderMeth())
                write(ch)

class _NormalAttr(_Attribute):
    """
    A text attribute for normal text.
    """
    def serialize(self, write, attrs, attributeRenderer):
        attrs.__init__()
        _Attribute.serialize(self, write, attrs, attributeRenderer)

class _OtherAttr(_Attribute):
    """
    A text attribute for text with formatting attributes.

The unary minus operator returns the inverse of this attribute, where that
    makes sense.

@type attrname: C{str}
    @ivar attrname: Text attribute name.

@ivar attrvalue: Text attribute value.
    """
    compareAttributes = ('attrname', 'attrvalue', 'children')

def __init__(self, attrname, attrvalue):
        _Attribute.__init__(self)
        self.attrname = attrname
        self.attrvalue = attrvalue

def __neg__(self):
        result = _OtherAttr(self.attrname, not self.attrvalue)
        result.children.extend(self.children)
        return result

def serialize(self, write, attrs, attributeRenderer):
        attrs = attrs._withAttribute(self.attrname, self.attrvalue)
        _Attribute.serialize(self, write, attrs, attributeRenderer)

class _ColorAttr(_Attribute):
    """
    Generic color attribute.

@param color: Color value.

@param ground: Foreground or background attribute name.
    """
    compareAttributes = ('color', 'ground', 'children')

def __init__(self, color, ground):
        _Attribute.__init__(self)
        self.color = color
        self.ground = ground

def serialize(self, write, attrs, attributeRenderer):
        attrs = attrs._withAttribute(self.ground, self.color)
        _Attribute.serialize(self, write, attrs, attributeRenderer)

class _ForegroundColorAttr(_ColorAttr):
    """
    Foreground color attribute.
    """
    def __init__(self, color):
        _ColorAttr.__init__(self, color, 'foreground')

class _BackgroundColorAttr(_ColorAttr):
    """
    Background color attribute.
    """
    def __init__(self, color):
        _ColorAttr.__init__(self, color, 'background')

class _ColorAttribute(object):
    """
    A color text attribute.

Attribute access results in a color value lookup, by name, in
    I{_ColorAttribute.attrs}.

@type ground: L{_ColorAttr}
    @param ground: Foreground or background color attribute to look color names
        up from.

@param attrs: Mapping of color names to color values.
    @type attrs: Dict like object.
    """
    def __init__(self, ground, attrs):
        self.ground = ground
        self.attrs = attrs

def __getattr__(self, name):
        try:
            return self.ground(self.attrs[name])
        except KeyError:
            raise AttributeError(name)

class CharacterAttributesMixin(object):
    """
    Mixin for character attributes that implements a C{__getattr__} method
    returning a new C{_NormalAttr} instance when attempting to access
    a C{'normal'} attribute; otherwise a new C{_OtherAttr} instance is returned
    for names that appears in the C{'attrs'} attribute.
    """
    def __getattr__(self, name):
        if name == 'normal':
            return _NormalAttr()
        if name in self.attrs:
            return _OtherAttr(name, True)
        raise AttributeError(name)

class DefaultFormattingState(FancyEqMixin, object):
    """
    A character attribute that does nothing, thus applying no attributes to
    text.
    """
    compareAttributes = ('_dummy',)

_dummy = 0

def copy(self):
        """
        Make a copy of this formatting state.

@return: A formatting state instance.
        """
        return type(self)()

def _withAttribute(self, name, value):
        """
        Add a character attribute to a copy of this formatting state.

@param name: Attribute name to be added to formatting state.

@param value: Attribute value.

@return: A formatting state instance with the new attribute.
        """
        return self.copy()

def toVT102(self):
        """
        Emit a VT102 control sequence that will set up all the attributes this
        formatting state has set.

@return: A string containing VT102 control sequences that mimic this
            formatting state.
        """
        return ''

class _FormattingStateMixin(DefaultFormattingState):
    """
    Mixin for the formatting state/attributes of a single character.
    """
    def copy(self):
        c = DefaultFormattingState.copy(self)
        c.__dict__.update(vars(self))
        return c

def _withAttribute(self, name, value):
        if getattr(self, name) != value:
            attr = self.copy()
            attr._subtracting = not value
            setattr(attr, name, value)
            return attr
        else:
            return self.copy()

def flatten(output, attrs, attributeRenderer='toVT102'):
    """
    Serialize a sequence of characters with attribute information

The resulting string can be interpreted by compatible software so that the
    contained characters are displayed and, for those attributes which are
    supported by the software, the attributes expressed. The exact result of
    the serialization depends on the behavior of the method specified by
    I{attributeRenderer}.

For example, if your terminal is VT102 compatible, you might run
    this for a colorful variation on the \"hello world\" theme::

from twisted.conch.insults.text import flatten, attributes as A
        from twisted.conch.insults.helper import CharacterAttribute
        print(flatten(
            A.normal[A.bold[A.fg.red['He'], A.fg.green['ll'], A.fg.magenta['o'], ' ',
                            A.fg.yellow['Wo'], A.fg.blue['rl'], A.fg.cyan['d!']]],
            CharacterAttribute()))

@param output: Object returned by accessing attributes of the
        module-level attributes object.

@param attrs: A formatting state instance used to determine how to
        serialize C{output}.

@return: A string expressing the text and display attributes specified by
        L{output}.
    """
    flattened = []
    output.serialize(flattened.append, attrs, attributeRenderer)
    return ''.join(flattened)

__all__ = [
    'flatten', 'DefaultFormattingState', 'CharacterAttributesMixin']

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