scour-0.26/ 0000700 0001750 0001750 00000000000 11564201127 012441 5 ustar alessio alessio scour-0.26/svg_transform.py 0000644 0001750 0001750 00000016311 11562136375 015733 0 ustar alessio alessio #!/usr/bin/env python
# -*- coding: utf-8 -*-
# SVG transformation list parser
#
# Copyright 2010 Louis Simard
#
# This file is part of Scour, http://www.codedread.com/scour/
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" Small recursive descent parser for SVG transform="" data.
In [1]: from svg_transform import svg_transform_parser
In [3]: svg_transform_parser.parse('translate(50, 50)')
Out[3]: [('translate', [50.0, 50.0])]
In [4]: svg_transform_parser.parse('translate(50)')
Out[4]: [('translate', [50.0])]
In [5]: svg_transform_parser.parse('rotate(36 50,50)')
Out[5]: [('rotate', [36.0, 50.0, 50.0])]
In [6]: svg_transform_parser.parse('rotate(36)')
Out[6]: [('rotate', [36.0])]
In [7]: svg_transform_parser.parse('skewX(20)')
Out[7]: [('skewX', [20.0])]
In [8]: svg_transform_parser.parse('skewY(40)')
Out[8]: [('skewX', [20.0])]
In [9]: svg_transform_parser.parse('scale(2 .5)')
Out[9]: [('scale', [2.0, 0.5])]
In [10]: svg_transform_parser.parse('scale(.5)')
Out[10]: [('scale', [0.5])]
In [11]: svg_transform_parser.parse('matrix(1 0 50 0 1 80)')
Out[11]: [('matrix', [1.0, 0.0, 50.0, 0.0, 1.0, 80.0])]
Multiple transformations are supported:
In [12]: svg_transform_parser.parse('translate(30 -30) rotate(36)')
Out[12]: [('translate', [30.0, -30.0]), ('rotate', [36.0])]
"""
import re
from decimal import *
# Sentinel.
class _EOF(object):
def __repr__(self):
return 'EOF'
EOF = _EOF()
lexicon = [
('float', r'[-+]?(?:(?:[0-9]*\.[0-9]+)|(?:[0-9]+\.?))(?:[Ee][-+]?[0-9]+)?'),
('int', r'[-+]?[0-9]+'),
('command', r'(?:matrix|translate|scale|rotate|skew[XY])'),
('coordstart', r'\('),
('coordend', r'\)'),
]
class Lexer(object):
""" Break SVG path data into tokens.
The SVG spec requires that tokens are greedy. This lexer relies on Python's
regexes defaulting to greediness.
This style of implementation was inspired by this article:
http://www.gooli.org/blog/a-simple-lexer-in-python/
"""
def __init__(self, lexicon):
self.lexicon = lexicon
parts = []
for name, regex in lexicon:
parts.append('(?P<%s>%s)' % (name, regex))
self.regex_string = '|'.join(parts)
self.regex = re.compile(self.regex_string)
def lex(self, text):
""" Yield (token_type, str_data) tokens.
The last token will be (EOF, None) where EOF is the singleton object
defined in this module.
"""
for match in self.regex.finditer(text):
for name, _ in self.lexicon:
m = match.group(name)
if m is not None:
yield (name, m)
break
yield (EOF, None)
svg_lexer = Lexer(lexicon)
class SVGTransformationParser(object):
""" Parse SVG transform="" data into a list of commands.
Each distinct command will take the form of a tuple (type, data). The
`type` is the character string that defines the type of transformation in the
transform data, so either of "translate", "rotate", "scale", "matrix",
"skewX" and "skewY". Data is always a list of numbers contained within the
transformation's parentheses.
See the SVG documentation for the interpretation of the individual elements
for each transformation.
The main method is `parse(text)`. It can only consume actual strings, not
filelike objects or iterators.
"""
def __init__(self, lexer=svg_lexer):
self.lexer = lexer
self.command_dispatch = {
'translate': self.rule_1or2numbers,
'scale': self.rule_1or2numbers,
'skewX': self.rule_1number,
'skewY': self.rule_1number,
'rotate': self.rule_1or3numbers,
'matrix': self.rule_6numbers,
}
# self.number_tokens = set(['int', 'float'])
self.number_tokens = list(['int', 'float'])
def parse(self, text):
""" Parse a string of SVG transform="" data.
"""
next = self.lexer.lex(text).next
commands = []
token = next()
while token[0] is not EOF:
command, token = self.rule_svg_transform(next, token)
commands.append(command)
return commands
def rule_svg_transform(self, next, token):
if token[0] != 'command':
raise SyntaxError("expecting a transformation type; got %r" % (token,))
command = token[1]
rule = self.command_dispatch[command]
token = next()
if token[0] != 'coordstart':
raise SyntaxError("expecting '('; got %r" % (token,))
numbers, token = rule(next, token)
if token[0] != 'coordend':
raise SyntaxError("expecting ')'; got %r" % (token,))
token = next()
return (command, numbers), token
def rule_1or2numbers(self, next, token):
numbers = []
# 1st number is mandatory
token = next()
number, token = self.rule_number(next, token)
numbers.append(number)
# 2nd number is optional
number, token = self.rule_optional_number(next, token)
if number is not None:
numbers.append(number)
return numbers, token
def rule_1number(self, next, token):
# this number is mandatory
token = next()
number, token = self.rule_number(next, token)
numbers = [number]
return numbers, token
def rule_1or3numbers(self, next, token):
numbers = []
# 1st number is mandatory
token = next()
number, token = self.rule_number(next, token)
numbers.append(number)
# 2nd number is optional
number, token = self.rule_optional_number(next, token)
if number is not None:
# but, if the 2nd number is provided, the 3rd is mandatory.
# we can't have just 2.
numbers.append(number)
number, token = self.rule_number(next, token)
numbers.append(number)
return numbers, token
def rule_6numbers(self, next, token):
numbers = []
token = next()
# all numbers are mandatory
for i in xrange(6):
number, token = self.rule_number(next, token)
numbers.append(number)
return numbers, token
def rule_number(self, next, token):
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
x = Decimal(token[1]) * 1
token = next()
return x, token
def rule_optional_number(self, next, token):
if token[0] not in self.number_tokens:
return None, token
else:
x = Decimal(token[1]) * 1
token = next()
return x, token
svg_transform_parser = SVGTransformationParser()
scour-0.26/release-notes.html 0000644 0001750 0001750 00000032270 11562136375 016125 0 ustar alessio alessio
Scour Release Notes
Fix Bug 603994, fix parsing of <style> element contents when a CDATA is present
Fix Bug 583758, added a bit to the Inkscape help text saying that groups aren't collapsed if IDs are also not stripped.
Fix Bug 583458, another typo in the Inkscape help tab.
Fix Bug 594930, In a <switch>, require one level of <g> if there was a <g> in the file already. Otherwise, only the first subelement of the <g> is chosen and rendered.
Fix Bug 576958, "Viewbox option doesn't work when units are set", when renderer workarounds are disabled.
Added many options: --remove-metadata, --quiet, --enable-comment-stripping, --shorten-ids, --renderer-workaround.
Remove all unused namespace declarations on the document element
Removes any empty <defs>, <metadata>, or <g> elements
Style fix-ups:
Fixes any style properties like this: style="fill: url(#linearGradient1000) rgb(0, 0, 0);"
Removes any style property of: opacity: 1;
Removes any stroke properties when stroke=none or stroke-opacity=0 or stroke-width=0
Removes any fill properties when fill=none or fill-opacity=0
Removes all fill/stroke properties when opacity=0
Removes any stop-opacity: 1
Removes any fill-opacity: 1
Removes any stroke-opacity: 1
Convert style properties into SVG attributes
scour-0.26/svg_regex.py 0000644 0001750 0001750 00000024603 11562136375 015035 0 ustar alessio alessio # This software is OSI Certified Open Source Software.
# OSI Certified is a certification mark of the Open Source Initiative.
#
# Copyright (c) 2006, Enthought, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of Enthought, Inc. nor the names of its contributors may
# be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
""" Small hand-written recursive descent parser for SVG data.
In [1]: from svg_regex import svg_parser
In [3]: svg_parser.parse('M 10,20 30,40V50 60 70')
Out[3]: [('M', [(10.0, 20.0), (30.0, 40.0)]), ('V', [50.0, 60.0, 70.0])]
In [4]: svg_parser.parse('M 0.6051.5') # An edge case
Out[4]: [('M', [(0.60509999999999997, 0.5)])]
In [5]: svg_parser.parse('M 100-200') # Another edge case
Out[5]: [('M', [(100.0, -200.0)])]
"""
import re
from decimal import *
# Sentinel.
class _EOF(object):
def __repr__(self):
return 'EOF'
EOF = _EOF()
lexicon = [
('float', r'[-+]?(?:(?:[0-9]*\.[0-9]+)|(?:[0-9]+\.?))(?:[Ee][-+]?[0-9]+)?'),
('int', r'[-+]?[0-9]+'),
('command', r'[AaCcHhLlMmQqSsTtVvZz]'),
]
class Lexer(object):
""" Break SVG path data into tokens.
The SVG spec requires that tokens are greedy. This lexer relies on Python's
regexes defaulting to greediness.
This style of implementation was inspired by this article:
http://www.gooli.org/blog/a-simple-lexer-in-python/
"""
def __init__(self, lexicon):
self.lexicon = lexicon
parts = []
for name, regex in lexicon:
parts.append('(?P<%s>%s)' % (name, regex))
self.regex_string = '|'.join(parts)
self.regex = re.compile(self.regex_string)
def lex(self, text):
""" Yield (token_type, str_data) tokens.
The last token will be (EOF, None) where EOF is the singleton object
defined in this module.
"""
for match in self.regex.finditer(text):
for name, _ in self.lexicon:
m = match.group(name)
if m is not None:
yield (name, m)
break
yield (EOF, None)
svg_lexer = Lexer(lexicon)
class SVGPathParser(object):
""" Parse SVG data into a list of commands.
Each distinct command will take the form of a tuple (command, data). The
`command` is just the character string that starts the command group in the
data, so 'M' for absolute moveto, 'm' for relative moveto, 'Z' for
closepath, etc. The kind of data it carries with it depends on the command.
For 'Z' (closepath), it's just None. The others are lists of individual
argument groups. Multiple elements in these lists usually mean to repeat the
command. The notable exception is 'M' (moveto) where only the first element
is truly a moveto. The remainder are implicit linetos.
See the SVG documentation for the interpretation of the individual elements
for each command.
The main method is `parse(text)`. It can only consume actual strings, not
filelike objects or iterators.
"""
def __init__(self, lexer=svg_lexer):
self.lexer = lexer
self.command_dispatch = {
'Z': self.rule_closepath,
'z': self.rule_closepath,
'M': self.rule_moveto_or_lineto,
'm': self.rule_moveto_or_lineto,
'L': self.rule_moveto_or_lineto,
'l': self.rule_moveto_or_lineto,
'H': self.rule_orthogonal_lineto,
'h': self.rule_orthogonal_lineto,
'V': self.rule_orthogonal_lineto,
'v': self.rule_orthogonal_lineto,
'C': self.rule_curveto3,
'c': self.rule_curveto3,
'S': self.rule_curveto2,
's': self.rule_curveto2,
'Q': self.rule_curveto2,
'q': self.rule_curveto2,
'T': self.rule_curveto1,
't': self.rule_curveto1,
'A': self.rule_elliptical_arc,
'a': self.rule_elliptical_arc,
}
# self.number_tokens = set(['int', 'float'])
self.number_tokens = list(['int', 'float'])
def parse(self, text):
""" Parse a string of SVG data.
"""
next = self.lexer.lex(text).next
token = next()
return self.rule_svg_path(next, token)
def rule_svg_path(self, next, token):
commands = []
while token[0] is not EOF:
if token[0] != 'command':
raise SyntaxError("expecting a command; got %r" % (token,))
rule = self.command_dispatch[token[1]]
command_group, token = rule(next, token)
commands.append(command_group)
return commands
def rule_closepath(self, next, token):
command = token[1]
token = next()
return (command, []), token
def rule_moveto_or_lineto(self, next, token):
command = token[1]
token = next()
coordinates = []
while token[0] in self.number_tokens:
pair, token = self.rule_coordinate_pair(next, token)
coordinates.extend(pair)
return (command, coordinates), token
def rule_orthogonal_lineto(self, next, token):
command = token[1]
token = next()
coordinates = []
while token[0] in self.number_tokens:
coord, token = self.rule_coordinate(next, token)
coordinates.append(coord)
return (command, coordinates), token
def rule_curveto3(self, next, token):
command = token[1]
token = next()
coordinates = []
while token[0] in self.number_tokens:
pair1, token = self.rule_coordinate_pair(next, token)
pair2, token = self.rule_coordinate_pair(next, token)
pair3, token = self.rule_coordinate_pair(next, token)
coordinates.extend(pair1)
coordinates.extend(pair2)
coordinates.extend(pair3)
return (command, coordinates), token
def rule_curveto2(self, next, token):
command = token[1]
token = next()
coordinates = []
while token[0] in self.number_tokens:
pair1, token = self.rule_coordinate_pair(next, token)
pair2, token = self.rule_coordinate_pair(next, token)
coordinates.extend(pair1)
coordinates.extend(pair2)
return (command, coordinates), token
def rule_curveto1(self, next, token):
command = token[1]
token = next()
coordinates = []
while token[0] in self.number_tokens:
pair1, token = self.rule_coordinate_pair(next, token)
coordinates.extend(pair1)
return (command, coordinates), token
def rule_elliptical_arc(self, next, token):
command = token[1]
token = next()
arguments = []
while token[0] in self.number_tokens:
rx = Decimal(token[1]) * 1
if rx < Decimal("0.0"):
raise SyntaxError("expecting a nonnegative number; got %r" % (token,))
token = next()
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
ry = Decimal(token[1]) * 1
if ry < Decimal("0.0"):
raise SyntaxError("expecting a nonnegative number; got %r" % (token,))
token = next()
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
axis_rotation = Decimal(token[1]) * 1
token = next()
if token[1] not in ('0', '1'):
raise SyntaxError("expecting a boolean flag; got %r" % (token,))
large_arc_flag = Decimal(token[1]) * 1
token = next()
if token[1] not in ('0', '1'):
raise SyntaxError("expecting a boolean flag; got %r" % (token,))
sweep_flag = Decimal(token[1]) * 1
token = next()
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
x = Decimal(token[1]) * 1
token = next()
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
y = Decimal(token[1]) * 1
token = next()
arguments.extend([rx, ry, axis_rotation, large_arc_flag, sweep_flag, x, y])
return (command, arguments), token
def rule_coordinate(self, next, token):
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
x = getcontext().create_decimal(token[1])
token = next()
return x, token
def rule_coordinate_pair(self, next, token):
# Inline these since this rule is so common.
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
x = getcontext().create_decimal(token[1])
token = next()
if token[0] not in self.number_tokens:
raise SyntaxError("expecting a number; got %r" % (token,))
y = getcontext().create_decimal(token[1])
token = next()
return [x, y], token
svg_parser = SVGPathParser()
scour-0.26/yocto_css.py 0000644 0001750 0001750 00000005470 11562136375 015052 0 ustar alessio alessio #!/usr/bin/env python
# -*- coding: utf-8 -*-
# yocto-css, an extremely bare minimum CSS parser
#
# Copyright 2009 Jeff Schiller
#
# This file is part of Scour, http://www.codedread.com/scour/
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# In order to resolve Bug 368716 (https://bugs.launchpad.net/scour/+bug/368716)
# scour needed a bare-minimum CSS parser in order to determine if some elements
# were still referenced by CSS properties.
# I looked at css-py (a CSS parser built in Python), but that library
# is about 35k of Python and requires ply to be installed. I just need
# something very basic to suit scour's needs.
# yocto-css takes a string of CSS and tries to spit out a list of rules
# A rule is an associative array (dictionary) with the following keys:
# - selector: contains the string of the selector (see CSS grammar)
# - properties: contains an associative array of CSS properties for this rule
# TODO: need to build up some unit tests for yocto_css
# stylesheet : [ CDO | CDC | S | statement ]*;
# statement : ruleset | at-rule;
# at-rule : ATKEYWORD S* any* [ block | ';' S* ];
# block : '{' S* [ any | block | ATKEYWORD S* | ';' S* ]* '}' S*;
# ruleset : selector? '{' S* declaration? [ ';' S* declaration? ]* '}' S*;
# selector : any+;
# declaration : property S* ':' S* value;
# property : IDENT;
# value : [ any | block | ATKEYWORD S* ]+;
# any : [ IDENT | NUMBER | PERCENTAGE | DIMENSION | STRING
# | DELIM | URI | HASH | UNICODE-RANGE | INCLUDES
# | DASHMATCH | FUNCTION S* any* ')'
# | '(' S* any* ')' | '[' S* any* ']' ] S*;
def parseCssString(str):
rules = []
# first, split on } to get the rule chunks
chunks = str.split('}')
for chunk in chunks:
# second, split on { to get the selector and the list of properties
bits = chunk.split('{')
if len(bits) != 2: continue
rule = {}
rule['selector'] = bits[0].strip()
# third, split on ; to get the property declarations
bites = bits[1].strip().split(';')
if len(bites) < 1: continue
props = {}
for bite in bites:
# fourth, split on : to get the property name and value
nibbles = bite.strip().split(':')
if len(nibbles) != 2: continue
props[nibbles[0].strip()] = nibbles[1].strip()
rule['properties'] = props
rules.append(rule)
return rules
scour-0.26/LICENSE 0000644 0001750 0001750 00000026135 11562136375 013501 0 ustar alessio alessio Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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scour-0.26/scour.py 0000755 0001750 0001750 00000325713 11562142207 014177 0 ustar alessio alessio #!/usr/bin/env python
# -*- coding: utf-8 -*-
# Scour
#
# Copyright 2010 Jeff Schiller
# Copyright 2010 Louis Simard
#
# This file is part of Scour, http://www.codedread.com/scour/
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Notes:
# rubys' path-crunching ideas here: http://intertwingly.net/code/svgtidy/spec.rb
# (and implemented here: http://intertwingly.net/code/svgtidy/svgtidy.rb )
# Yet more ideas here: http://wiki.inkscape.org/wiki/index.php/Save_Cleaned_SVG
#
# * Process Transformations
# * Collapse all group based transformations
# Even more ideas here: http://esw.w3.org/topic/SvgTidy
# * analysis of path elements to see if rect can be used instead? (must also need to look
# at rounded corners)
# Next Up:
# - why are marker-start, -end not removed from the style attribute?
# - why are only overflow style properties considered and not attributes?
# - only remove unreferenced elements if they are not children of a referenced element
# - add an option to remove ids if they match the Inkscape-style of IDs
# - investigate point-reducing algorithms
# - parse transform attribute
# - if a has only one element in it, collapse the (ensure transform, etc are carried down)
# necessary to get true division
from __future__ import division
import os
import sys
import xml.dom.minidom
import re
import math
from svg_regex import svg_parser
from svg_transform import svg_transform_parser
import optparse
from yocto_css import parseCssString
# Python 2.3- did not have Decimal
try:
from decimal import *
except ImportError:
print >>sys.stderr, "Scour requires Python 2.4."
# Import Psyco if available
try:
import psyco
psyco.full()
except ImportError:
pass
APP = 'scour'
VER = '0.26'
COPYRIGHT = 'Copyright Jeff Schiller, Louis Simard, 2010'
NS = { 'SVG': 'http://www.w3.org/2000/svg',
'XLINK': 'http://www.w3.org/1999/xlink',
'SODIPODI': 'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd',
'INKSCAPE': 'http://www.inkscape.org/namespaces/inkscape',
'ADOBE_ILLUSTRATOR': 'http://ns.adobe.com/AdobeIllustrator/10.0/',
'ADOBE_GRAPHS': 'http://ns.adobe.com/Graphs/1.0/',
'ADOBE_SVG_VIEWER': 'http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/',
'ADOBE_VARIABLES': 'http://ns.adobe.com/Variables/1.0/',
'ADOBE_SFW': 'http://ns.adobe.com/SaveForWeb/1.0/',
'ADOBE_EXTENSIBILITY': 'http://ns.adobe.com/Extensibility/1.0/',
'ADOBE_FLOWS': 'http://ns.adobe.com/Flows/1.0/',
'ADOBE_IMAGE_REPLACEMENT': 'http://ns.adobe.com/ImageReplacement/1.0/',
'ADOBE_CUSTOM': 'http://ns.adobe.com/GenericCustomNamespace/1.0/',
'ADOBE_XPATH': 'http://ns.adobe.com/XPath/1.0/'
}
unwanted_ns = [ NS['SODIPODI'], NS['INKSCAPE'], NS['ADOBE_ILLUSTRATOR'],
NS['ADOBE_GRAPHS'], NS['ADOBE_SVG_VIEWER'], NS['ADOBE_VARIABLES'],
NS['ADOBE_SFW'], NS['ADOBE_EXTENSIBILITY'], NS['ADOBE_FLOWS'],
NS['ADOBE_IMAGE_REPLACEMENT'], NS['ADOBE_CUSTOM'], NS['ADOBE_XPATH'] ]
svgAttributes = [
'clip-rule',
'display',
'fill',
'fill-opacity',
'fill-rule',
'filter',
'font-family',
'font-size',
'font-stretch',
'font-style',
'font-variant',
'font-weight',
'line-height',
'marker',
'marker-end',
'marker-mid',
'marker-start',
'opacity',
'overflow',
'stop-color',
'stop-opacity',
'stroke',
'stroke-dasharray',
'stroke-dashoffset',
'stroke-linecap',
'stroke-linejoin',
'stroke-miterlimit',
'stroke-opacity',
'stroke-width',
'visibility'
]
colors = {
'aliceblue': 'rgb(240, 248, 255)',
'antiquewhite': 'rgb(250, 235, 215)',
'aqua': 'rgb( 0, 255, 255)',
'aquamarine': 'rgb(127, 255, 212)',
'azure': 'rgb(240, 255, 255)',
'beige': 'rgb(245, 245, 220)',
'bisque': 'rgb(255, 228, 196)',
'black': 'rgb( 0, 0, 0)',
'blanchedalmond': 'rgb(255, 235, 205)',
'blue': 'rgb( 0, 0, 255)',
'blueviolet': 'rgb(138, 43, 226)',
'brown': 'rgb(165, 42, 42)',
'burlywood': 'rgb(222, 184, 135)',
'cadetblue': 'rgb( 95, 158, 160)',
'chartreuse': 'rgb(127, 255, 0)',
'chocolate': 'rgb(210, 105, 30)',
'coral': 'rgb(255, 127, 80)',
'cornflowerblue': 'rgb(100, 149, 237)',
'cornsilk': 'rgb(255, 248, 220)',
'crimson': 'rgb(220, 20, 60)',
'cyan': 'rgb( 0, 255, 255)',
'darkblue': 'rgb( 0, 0, 139)',
'darkcyan': 'rgb( 0, 139, 139)',
'darkgoldenrod': 'rgb(184, 134, 11)',
'darkgray': 'rgb(169, 169, 169)',
'darkgreen': 'rgb( 0, 100, 0)',
'darkgrey': 'rgb(169, 169, 169)',
'darkkhaki': 'rgb(189, 183, 107)',
'darkmagenta': 'rgb(139, 0, 139)',
'darkolivegreen': 'rgb( 85, 107, 47)',
'darkorange': 'rgb(255, 140, 0)',
'darkorchid': 'rgb(153, 50, 204)',
'darkred': 'rgb(139, 0, 0)',
'darksalmon': 'rgb(233, 150, 122)',
'darkseagreen': 'rgb(143, 188, 143)',
'darkslateblue': 'rgb( 72, 61, 139)',
'darkslategray': 'rgb( 47, 79, 79)',
'darkslategrey': 'rgb( 47, 79, 79)',
'darkturquoise': 'rgb( 0, 206, 209)',
'darkviolet': 'rgb(148, 0, 211)',
'deeppink': 'rgb(255, 20, 147)',
'deepskyblue': 'rgb( 0, 191, 255)',
'dimgray': 'rgb(105, 105, 105)',
'dimgrey': 'rgb(105, 105, 105)',
'dodgerblue': 'rgb( 30, 144, 255)',
'firebrick': 'rgb(178, 34, 34)',
'floralwhite': 'rgb(255, 250, 240)',
'forestgreen': 'rgb( 34, 139, 34)',
'fuchsia': 'rgb(255, 0, 255)',
'gainsboro': 'rgb(220, 220, 220)',
'ghostwhite': 'rgb(248, 248, 255)',
'gold': 'rgb(255, 215, 0)',
'goldenrod': 'rgb(218, 165, 32)',
'gray': 'rgb(128, 128, 128)',
'grey': 'rgb(128, 128, 128)',
'green': 'rgb( 0, 128, 0)',
'greenyellow': 'rgb(173, 255, 47)',
'honeydew': 'rgb(240, 255, 240)',
'hotpink': 'rgb(255, 105, 180)',
'indianred': 'rgb(205, 92, 92)',
'indigo': 'rgb( 75, 0, 130)',
'ivory': 'rgb(255, 255, 240)',
'khaki': 'rgb(240, 230, 140)',
'lavender': 'rgb(230, 230, 250)',
'lavenderblush': 'rgb(255, 240, 245)',
'lawngreen': 'rgb(124, 252, 0)',
'lemonchiffon': 'rgb(255, 250, 205)',
'lightblue': 'rgb(173, 216, 230)',
'lightcoral': 'rgb(240, 128, 128)',
'lightcyan': 'rgb(224, 255, 255)',
'lightgoldenrodyellow': 'rgb(250, 250, 210)',
'lightgray': 'rgb(211, 211, 211)',
'lightgreen': 'rgb(144, 238, 144)',
'lightgrey': 'rgb(211, 211, 211)',
'lightpink': 'rgb(255, 182, 193)',
'lightsalmon': 'rgb(255, 160, 122)',
'lightseagreen': 'rgb( 32, 178, 170)',
'lightskyblue': 'rgb(135, 206, 250)',
'lightslategray': 'rgb(119, 136, 153)',
'lightslategrey': 'rgb(119, 136, 153)',
'lightsteelblue': 'rgb(176, 196, 222)',
'lightyellow': 'rgb(255, 255, 224)',
'lime': 'rgb( 0, 255, 0)',
'limegreen': 'rgb( 50, 205, 50)',
'linen': 'rgb(250, 240, 230)',
'magenta': 'rgb(255, 0, 255)',
'maroon': 'rgb(128, 0, 0)',
'mediumaquamarine': 'rgb(102, 205, 170)',
'mediumblue': 'rgb( 0, 0, 205)',
'mediumorchid': 'rgb(186, 85, 211)',
'mediumpurple': 'rgb(147, 112, 219)',
'mediumseagreen': 'rgb( 60, 179, 113)',
'mediumslateblue': 'rgb(123, 104, 238)',
'mediumspringgreen': 'rgb( 0, 250, 154)',
'mediumturquoise': 'rgb( 72, 209, 204)',
'mediumvioletred': 'rgb(199, 21, 133)',
'midnightblue': 'rgb( 25, 25, 112)',
'mintcream': 'rgb(245, 255, 250)',
'mistyrose': 'rgb(255, 228, 225)',
'moccasin': 'rgb(255, 228, 181)',
'navajowhite': 'rgb(255, 222, 173)',
'navy': 'rgb( 0, 0, 128)',
'oldlace': 'rgb(253, 245, 230)',
'olive': 'rgb(128, 128, 0)',
'olivedrab': 'rgb(107, 142, 35)',
'orange': 'rgb(255, 165, 0)',
'orangered': 'rgb(255, 69, 0)',
'orchid': 'rgb(218, 112, 214)',
'palegoldenrod': 'rgb(238, 232, 170)',
'palegreen': 'rgb(152, 251, 152)',
'paleturquoise': 'rgb(175, 238, 238)',
'palevioletred': 'rgb(219, 112, 147)',
'papayawhip': 'rgb(255, 239, 213)',
'peachpuff': 'rgb(255, 218, 185)',
'peru': 'rgb(205, 133, 63)',
'pink': 'rgb(255, 192, 203)',
'plum': 'rgb(221, 160, 221)',
'powderblue': 'rgb(176, 224, 230)',
'purple': 'rgb(128, 0, 128)',
'red': 'rgb(255, 0, 0)',
'rosybrown': 'rgb(188, 143, 143)',
'royalblue': 'rgb( 65, 105, 225)',
'saddlebrown': 'rgb(139, 69, 19)',
'salmon': 'rgb(250, 128, 114)',
'sandybrown': 'rgb(244, 164, 96)',
'seagreen': 'rgb( 46, 139, 87)',
'seashell': 'rgb(255, 245, 238)',
'sienna': 'rgb(160, 82, 45)',
'silver': 'rgb(192, 192, 192)',
'skyblue': 'rgb(135, 206, 235)',
'slateblue': 'rgb(106, 90, 205)',
'slategray': 'rgb(112, 128, 144)',
'slategrey': 'rgb(112, 128, 144)',
'snow': 'rgb(255, 250, 250)',
'springgreen': 'rgb( 0, 255, 127)',
'steelblue': 'rgb( 70, 130, 180)',
'tan': 'rgb(210, 180, 140)',
'teal': 'rgb( 0, 128, 128)',
'thistle': 'rgb(216, 191, 216)',
'tomato': 'rgb(255, 99, 71)',
'turquoise': 'rgb( 64, 224, 208)',
'violet': 'rgb(238, 130, 238)',
'wheat': 'rgb(245, 222, 179)',
'white': 'rgb(255, 255, 255)',
'whitesmoke': 'rgb(245, 245, 245)',
'yellow': 'rgb(255, 255, 0)',
'yellowgreen': 'rgb(154, 205, 50)',
}
default_attributes = { # excluded all attributes with 'auto' as default
# SVG 1.1 presentation attributes
'baseline-shift': 'baseline',
'clip-path': 'none',
'clip-rule': 'nonzero',
'color': '#000',
'color-interpolation-filters': 'linearRGB',
'color-interpolation': 'sRGB',
'direction': 'ltr',
'display': 'inline',
'enable-background': 'accumulate',
'fill': '#000',
'fill-opacity': '1',
'fill-rule': 'nonzero',
'filter': 'none',
'flood-color': '#000',
'flood-opacity': '1',
'font-size-adjust': 'none',
'font-size': 'medium',
'font-stretch': 'normal',
'font-style': 'normal',
'font-variant': 'normal',
'font-weight': 'normal',
'glyph-orientation-horizontal': '0deg',
'letter-spacing': 'normal',
'lighting-color': '#fff',
'marker': 'none',
'marker-start': 'none',
'marker-mid': 'none',
'marker-end': 'none',
'mask': 'none',
'opacity': '1',
'pointer-events': 'visiblePainted',
'stop-color': '#000',
'stop-opacity': '1',
'stroke': 'none',
'stroke-dasharray': 'none',
'stroke-dashoffset': '0',
'stroke-linecap': 'butt',
'stroke-linejoin': 'miter',
'stroke-miterlimit': '4',
'stroke-opacity': '1',
'stroke-width': '1',
'text-anchor': 'start',
'text-decoration': 'none',
'unicode-bidi': 'normal',
'visibility': 'visible',
'word-spacing': 'normal',
'writing-mode': 'lr-tb',
# SVG 1.2 tiny properties
'audio-level': '1',
'solid-color': '#000',
'solid-opacity': '1',
'text-align': 'start',
'vector-effect': 'none',
'viewport-fill': 'none',
'viewport-fill-opacity': '1',
}
def isSameSign(a,b): return (a <= 0 and b <= 0) or (a >= 0 and b >= 0)
scinumber = re.compile(r"[-+]?(\d*\.?)?\d+[eE][-+]?\d+")
number = re.compile(r"[-+]?(\d*\.?)?\d+")
sciExponent = re.compile(r"[eE]([-+]?\d+)")
unit = re.compile("(em|ex|px|pt|pc|cm|mm|in|%){1,1}$")
class Unit(object):
# Integer constants for units.
INVALID = -1
NONE = 0
PCT = 1
PX = 2
PT = 3
PC = 4
EM = 5
EX = 6
CM = 7
MM = 8
IN = 9
# String to Unit. Basically, converts unit strings to their integer constants.
s2u = {
'': NONE,
'%': PCT,
'px': PX,
'pt': PT,
'pc': PC,
'em': EM,
'ex': EX,
'cm': CM,
'mm': MM,
'in': IN,
}
# Unit to String. Basically, converts unit integer constants to their corresponding strings.
u2s = {
NONE: '',
PCT: '%',
PX: 'px',
PT: 'pt',
PC: 'pc',
EM: 'em',
EX: 'ex',
CM: 'cm',
MM: 'mm',
IN: 'in',
}
# @staticmethod
def get(unitstr):
if unitstr is None: return Unit.NONE
try:
return Unit.s2u[unitstr]
except KeyError:
return Unit.INVALID
# @staticmethod
def str(unitint):
try:
return Unit.u2s[unitint]
except KeyError:
return 'INVALID'
get = staticmethod(get)
str = staticmethod(str)
class SVGLength(object):
def __init__(self, str):
try: # simple unitless and no scientific notation
self.value = float(str)
if int(self.value) == self.value:
self.value = int(self.value)
self.units = Unit.NONE
except ValueError:
# we know that the length string has an exponent, a unit, both or is invalid
# parse out number, exponent and unit
self.value = 0
unitBegin = 0
scinum = scinumber.match(str)
if scinum != None:
# this will always match, no need to check it
numMatch = number.match(str)
expMatch = sciExponent.search(str, numMatch.start(0))
self.value = (float(numMatch.group(0)) *
10 ** float(expMatch.group(1)))
unitBegin = expMatch.end(1)
else:
# unit or invalid
numMatch = number.match(str)
if numMatch != None:
self.value = float(numMatch.group(0))
unitBegin = numMatch.end(0)
if int(self.value) == self.value:
self.value = int(self.value)
if unitBegin != 0 :
unitMatch = unit.search(str, unitBegin)
if unitMatch != None :
self.units = Unit.get(unitMatch.group(0))
# invalid
else:
# TODO: this needs to set the default for the given attribute (how?)
self.value = 0
self.units = Unit.INVALID
def findElementsWithId(node, elems=None):
"""
Returns all elements with id attributes
"""
if elems is None:
elems = {}
id = node.getAttribute('id')
if id != '' :
elems[id] = node
if node.hasChildNodes() :
for child in node.childNodes:
# from http://www.w3.org/TR/DOM-Level-2-Core/idl-definitions.html
# we are only really interested in nodes of type Element (1)
if child.nodeType == 1 :
findElementsWithId(child, elems)
return elems
referencingProps = ['fill', 'stroke', 'filter', 'clip-path', 'mask', 'marker-start',
'marker-end', 'marker-mid']
def findReferencedElements(node, ids=None):
"""
Returns the number of times an ID is referenced as well as all elements
that reference it. node is the node at which to start the search. The
return value is a map which has the id as key and each value is an array
where the first value is a count and the second value is a list of nodes
that referenced it.
Currently looks at fill, stroke, clip-path, mask, marker, and
xlink:href attributes.
"""
global referencingProps
if ids is None:
ids = {}
# TODO: input argument ids is clunky here (see below how it is called)
# GZ: alternative to passing dict, use **kwargs
# if this node is a style element, parse its text into CSS
if node.nodeName == 'style' and node.namespaceURI == NS['SVG']:
# one stretch of text, please! (we could use node.normalize(), but
# this actually modifies the node, and we don't want to keep
# whitespace around if there's any)
stylesheet = "".join([child.nodeValue for child in node.childNodes])
if stylesheet != '':
cssRules = parseCssString(stylesheet)
for rule in cssRules:
for propname in rule['properties']:
propval = rule['properties'][propname]
findReferencingProperty(node, propname, propval, ids)
return ids
# else if xlink:href is set, then grab the id
href = node.getAttributeNS(NS['XLINK'],'href')
if href != '' and len(href) > 1 and href[0] == '#':
# we remove the hash mark from the beginning of the id
id = href[1:]
if id in ids:
ids[id][0] += 1
ids[id][1].append(node)
else:
ids[id] = [1,[node]]
# now get all style properties and the fill, stroke, filter attributes
styles = node.getAttribute('style').split(';')
for attr in referencingProps:
styles.append(':'.join([attr, node.getAttribute(attr)]))
for style in styles:
propval = style.split(':')
if len(propval) == 2 :
prop = propval[0].strip()
val = propval[1].strip()
findReferencingProperty(node, prop, val, ids)
if node.hasChildNodes() :
for child in node.childNodes:
if child.nodeType == 1 :
findReferencedElements(child, ids)
return ids
def findReferencingProperty(node, prop, val, ids):
global referencingProps
if prop in referencingProps and val != '' :
if len(val) >= 7 and val[0:5] == 'url(#' :
id = val[5:val.find(')')]
if ids.has_key(id) :
ids[id][0] += 1
ids[id][1].append(node)
else:
ids[id] = [1,[node]]
# if the url has a quote in it, we need to compensate
elif len(val) >= 8 :
id = None
# double-quote
if val[0:6] == 'url("#' :
id = val[6:val.find('")')]
# single-quote
elif val[0:6] == "url('#" :
id = val[6:val.find("')")]
if id != None:
if ids.has_key(id) :
ids[id][0] += 1
ids[id][1].append(node)
else:
ids[id] = [1,[node]]
numIDsRemoved = 0
numElemsRemoved = 0
numAttrsRemoved = 0
numRastersEmbedded = 0
numPathSegmentsReduced = 0
numCurvesStraightened = 0
numBytesSavedInPathData = 0
numBytesSavedInColors = 0
numBytesSavedInIDs = 0
numBytesSavedInLengths = 0
numBytesSavedInTransforms = 0
numPointsRemovedFromPolygon = 0
numCommentBytes = 0
def removeUnusedDefs(doc, defElem, elemsToRemove=None):
if elemsToRemove is None:
elemsToRemove = []
identifiedElements = findElementsWithId(doc.documentElement)
referencedIDs = findReferencedElements(doc.documentElement)
keepTags = ['font', 'style', 'metadata', 'script', 'title', 'desc']
for elem in defElem.childNodes:
# only look at it if an element and not referenced anywhere else
if elem.nodeType == 1 and (elem.getAttribute('id') == '' or \
(not elem.getAttribute('id') in referencedIDs)):
# we only inspect the children of a group in a defs if the group
# is not referenced anywhere else
if elem.nodeName == 'g' and elem.namespaceURI == NS['SVG']:
elemsToRemove = removeUnusedDefs(doc, elem, elemsToRemove)
# we only remove if it is not one of our tags we always keep (see above)
elif not elem.nodeName in keepTags:
elemsToRemove.append(elem)
return elemsToRemove
def removeUnreferencedElements(doc):
"""
Removes all unreferenced elements except for