Source code for enable.savage.svg.attributes

# (C) Copyright 2005-2022 Enthought, Inc., Austin, TX
# All rights reserved.
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at
# Thanks for using Enthought open source!
    Parsers for specific attributes
import urllib.parse as urlparse

from pyparsing import (
    CaselessLiteral, Group, Literal, Optional, SkipTo, StringEnd

from .css.colour import colourValue

# Paint values
none = CaselessLiteral("none").setParseAction(lambda t: ["NONE", ()])
currentColor = CaselessLiteral("currentColor").setParseAction(
    lambda t: ["CURRENTCOLOR", ()]

[docs]def parsePossibleURL(t): # Workaround for PyParsing versions < 2.1.0, for which t is wrapped in an # extra level of nesting. See enthought/enable#224. if len(t) == 1: t = t[0] possibleURL, fallback = t return [urlparse.urlsplit(possibleURL), fallback]
# Normal color declaration colorDeclaration = none | currentColor | colourValue urlEnd = ( Literal(")").suppress() + Optional(Group(colorDeclaration), default=()) + StringEnd() ) url = ( CaselessLiteral("URL") + Literal("(").suppress() + Group(SkipTo(urlEnd, include=True).setParseAction(parsePossibleURL)) ) # paint value will parse into a (type, details) tuple. # For none and currentColor, the details tuple will be the empty tuple # for CSS color declarations, it will be (type, (R,G,B)) # for URLs, it will be ("URL", ((url tuple), fallback)) # The url tuple will be as returned by urlparse.urlsplit, and can be # an empty tuple if the parser has an error # The fallback will be another (type, details) tuple as a parsed # colorDeclaration, but may be the empty tuple if it is not present paintValue = url | colorDeclaration