Merge fixes from lp:~scouring/scour/transform, some sourced from lp:~ecmanaut/scour/transform.

scour.py

@@ -2335,123 +2335,164 @@ def optimizeTransform(transform):
 	
 	The transformation list is modified in-place.
 	"""
+	# FIXME: reordering these would optimize even more cases:
+	#	 first: Fold consecutive runs of the same transformation
+	#	 extra:	Attempt to cast between types to create sameness:
+	#		"matrix(0 1 -1 0 0 0) rotate(180) scale(-1)" all
+	#		are rotations (90, 180, 180) -- thus "rotate(90)"
+	#	second: Simplify transforms where numbers are optional.
+	#	 third: Attempt to simplify any single remaining matrix()
+	#
 	# if there's only one transformation and it's a matrix,
 	# try to make it a shorter non-matrix transformation
+	# NOTE: as matrix(a b c d e f) in SVG means the matrix:
+	# |¯  a  c  e  ¯|   make constants   |¯  A1  A2  A3  ¯|
+	# |   b  d  f   |  translating them  |   B1  B2  B3   |
+	# |_  0  0  1  _|  to more readable  |_  0    0   1  _|
 	if len(transform) == 1 and transform[0][0] == 'matrix':
+		matrix = A1, B1, A2, B2, A3, B3 = transform[0][1]
 		# |¯  1  0  0  ¯|
 		# |   0  1  0   |  Identity matrix (no transformation)
 		# |_  0  0  1  _|
-		if transform[0][1] == [1, 0, 0, 0, 1, 0]:
+		if matrix == [1, 0, 0, 1, 0, 0]:
 			del transform[0]
 		# |¯  1  0  X  ¯|
 		# |   0  1  Y   |  Translation by (X, Y).
 		# |_  0  0  1  _|
-		if (transform[0][1][0] == 1 and
-		    transform[0][1][1] == 0 and
-		    transform[0][1][3] == 0 and
-		    transform[0][1][4] == 1):
-			transform[0] = ('translate', [
-				transform[0][1][2], transform[0][1][5]
-			])
+		elif (A1 ==  1 and A2 ==  0
+		 and  B1 ==  0 and B2 ==  1):
+			transform[0] = ('translate', [A3, B3])
 		# |¯  X  0  0  ¯|
 		# |   0  Y  0   |  Scaling by (X, Y).
 		# |_  0  0  1  _|
-		elif (transform[0][1][1] == 0 and
-		      transform[0][1][2] == 0 and
-		      transform[0][1][3] == 0 and
-		      transform[0][1][5] == 0):
-			transform[0] = ('scale', [
-				transform[0][1][0], transform[0][1][4]
-			])
+		elif (             A2 ==  0 and A3 ==  0
+		 and  B1 ==  0 and              B3 ==  0):
+			transform[0] = ('scale', [A1, B2])
 		# |¯  cos(A) -sin(A)    0    ¯|  Rotation by angle A,
 		# |   sin(A)  cos(A)    0     |  clockwise, about the origin.
-		# |_    0       0       1    _|  A is in degrees.
-		elif (transform[0][1][0] ==  transform[0][1][4]                and
-		      transform[0][1][1] == -transform[0][1][3]                and
-		      transform[0][1][0] >=  0                                 and
-		      transform[0][1][0] <=  1                                 and
-		      transform[0][1][3] ==  sqrt(1 - transform[0][1][0] ** 2) and
-		      transform[0][1][2] ==  0                                 and
-		      transform[0][1][5] ==  0):
-			transform[0] = ('rotate', [
-				# What allows us to get the angle from the matrix
-				# is the inverse sine of sin(A), which is the 4th
-				# matrix component, or the inverse cosine of cos(A),
-				# which is the 1st matrix component. I chose sin(A).
-				# math.asin returns radians, so convert.
-				# SVG demands degrees.
-				Decimal(math.degrees(math.asin(transform[0][1][4])))
-			])
+		# |_    0       0       1    _|  A is in degrees, [-180...180].
+		elif (A1 == B2 and -1 <= A1 <= 1 and A3 == 0
+		 and -B1 == A2 and -1 <= B1 <= 1 and B3 == 0
+		 # as cos² A + sin² A == 1 and as decimal trig is approximate:
+		 # FIXME: the "epsilon" term here should really be some function
+		 #        of the precision of the (sin|cos)_A terms, not 1e-15:
+		 and  abs((B1 ** 2) + (A1 ** 2) - 1) < Decimal("1e-15")):
+			sin_A, cos_A = B1, A1
+			# while asin(A) and acos(A) both only have an 180° range
+			# the sign of sin(A) and cos(A) varies across quadrants,
+			# letting us hone in on the angle the matrix represents:
+			# -- => < -90 | -+ => -90..0 | ++ => 0..90 | +- => >= 90
+			#
+			# http://en.wikipedia.org/wiki/File:Sine_cosine_plot.svg
+			# shows asin has the correct angle the middle quadrants:
+			A = Decimal(str(math.degrees(math.asin(float(sin_A)))))
+			if cos_A < 0: # otherwise needs adjusting from the edges
+				if sin_A < 0:
+					A = -180 - A
+				else:
+					A =  180 - A
+			transform[0] = ('rotate', [A])
 	
 	# Simplify transformations where numbers are optional.
-	for singleTransform in transform:
-		if singleTransform[0] == 'translate':
+	for type, args in transform:
+		if type == 'translate':
 			# Only the X coordinate is required for translations.
 			# If the Y coordinate is unspecified, it's 0.
-			if (len(singleTransform[1]) == 2 and
-			    singleTransform[1][1] == 0):
-				del singleTransform[1][1]
-		elif singleTransform[0] == 'rotate':
+			if len(args) == 2 and args[1] == 0:
+				del args[1]
+		elif type == 'rotate':
 			# Only the angle is required for rotations.
 			# If the coordinates are unspecified, it's the origin (0, 0).
-			if (len(singleTransform[1]) == 3 and
-			    singleTransform[1][1] == 0 and
-			    singleTransform[1][2] == 0):
-				del singleTransform[1][1:]
-		elif singleTransform[0] == 'scale':
+			if len(args) == 3 and args[1] == args[2] == 0:
+				del args[1:]
+		elif type == 'scale':
 			# Only the X scaling factor is required.
 			# If the Y factor is unspecified, it's the same as X.
-			if (len(singleTransform[1]) == 2 and
-			    singleTransform[1][0] == singleTransform[1][1]):
-				del singleTransform[1][1]
-	
+			if len(args) == 2 and args[0] == args[1]:
+				del args[1]
+
 	# Attempt to coalesce runs of the same transformation.
 	# Translations followed immediately by other translations,
 	# rotations followed immediately by other rotations,
 	# scaling followed immediately by other scaling,
 	# are safe to add.
-	# A matrix followed immediately by another matrix
-	# would be safe to multiply together, too.
+	# Identity skewX/skewY are safe to remove, but how do they accrete?
+	# |¯    1     0    0    ¯|
+	# |   tan(A)  1    0     |  skews X coordinates by angle A
+	# |_    0     0    1    _|
+	#
+	# |¯    1  tan(A)  0    ¯|
+	# |     0     1    0     |  skews Y coordinates by angle A
+	# |_    0     0    1    _|
+	#
+	# FIXME: A matrix followed immediately by another matrix
+	#	 would be safe to multiply together, too.
 	i = 1
 	while i < len(transform):
-		if transform[i][0] == transform[i - 1][0] == 'translate':
-			transform[i - 1][1][0] += transform[i][1][0] # x
+		currType, currArgs = transform[i]
+		prevType, prevArgs = transform[i - 1]
+		if currType == prevType == 'translate':
+			prevArgs[0] += currArgs[0] # x
 			# for y, only add if the second translation has an explicit y
-			if len(transform[i][1]) == 2:
-				if len(transform[i - 1][1]) == 2:
-					transform[i - 1][1][1] += transform[i][1][1] # y
-				elif len(transform[i - 1][1]) == 1:
-					transform[i - 1][1].append(transform[i][1][1]) # y
+			if len(currArgs) == 2:
+				if len(prevArgs) == 2:
+					prevArgs[1] += currArgs[1] # y
+				elif len(prevArgs) == 1:
+					prevArgs.append(currArgs[1]) # y
 			del transform[i]
-			if transform[i - 1][1][0] == transform[i - 1][1][1] == 0:
+			if prevArgs[0] == prevArgs[1] == 0:
 				# Identity translation!
 				i -= 1
 				del transform[i]
-		elif (transform[i][0] == transform[i - 1][0] == 'rotate'
-		      and len(transform[i - 1][1]) == len(transform[i][1]) == 1):
+		elif (currType == prevType == 'rotate'
+		      and len(prevArgs) == len(currArgs) == 1):
 			# Only coalesce if both rotations are from the origin.
-			transform[i - 1][1][0] += transform[i][1][0] # angle
+			prevArgs[0] += currArgs[0] # angle
+			# Put the new angle in the range ]-360, 360[.
+			# The modulo operator yields results with the sign of the
+			# divisor, so for negative dividends, we preserve the sign
+			# of the angle.
+			if prevArgs[0] < 0: prevArgs[0] = prevArgs[0] % -360
+			else:               prevArgs[0] = prevArgs[0] %  360
+
 			del transform[i]
-		elif transform[i][0] == transform[i - 1][0] == 'scale':
-			transform[i - 1][1][0] *= transform[i][1][0] # x
+		elif currType == prevType == 'scale':
+			prevArgs[0] *= currArgs[0] # x
 			# handle an implicit y
-			if len(transform[i - 1][1]) == 2 and len(transform[i][1]) == 2:
+			if len(prevArgs) == 2 and len(currArgs) == 2:
 				# y1 * y2
-				transform[i - 1][1][1] *= transform[i][1][1]
-			elif len(transform[i - 1][1]) == 1 and len(transform[i][1]) == 2:
+				prevArgs[1] *= currArgs[1]
+			elif len(prevArgs) == 1 and len(currArgs) == 2:
 				# create y2 = uniformscalefactor1 * y2
-				transform[i - 1][1].append(transform[i - 1][1][0] * transform[i][1][1])
-			elif len(transform[i - 1][1]) == 2 and len(transform[i][1]) == 1:
+				prevArgs.append(prevArgs[0] * currArgs[1])
+			elif len(prevArgs) == 2 and len(currArgs) == 1:
 				# y1 * uniformscalefactor2
-				transform[i - 1][1][1] *= transform[i][1][0]
+				prevArgs[1] *= currArgs[0]
 			del transform[i]
-			if transform[i - 1][1][0] == transform[i - 1][1][1] == 1:
+			if prevArgs[0] == prevArgs[1] == 1:
 				# Identity scale!
 				i -= 1
 				del transform[i]
 		else:
 			i += 1
 
+	# Some fixups are needed for single-element transformation lists, since
+	# the loop above was to coalesce elements with their predecessors in the
+	# list, and thus it required 2 elements.
+	i = 0
+	while i < len(transform):
+		currType, currArgs = transform[i]
+		if ((currType == 'skewX' or currType == 'skewY')
+		  and len(currArgs) == 1 and currArgs[0] == 0):
+			# Identity skew!
+			del transform[i]
+		elif ((currType == 'rotate')
+		  and len(currArgs) == 1 and currArgs[0] == 0):
+			# Identity rotation!
+			del transform[i]
+		else:
+			i += 1
+
 def optimizeTransforms(element, options) :
 	"""
 	Attempts to optimise transform specifications on the given node and its children.
@@ -2470,7 +2511,10 @@ def optimizeTransforms(element, options) :
 			newVal = serializeTransform(transform)
 			
 			if len(newVal) < len(val):
-				element.setAttribute(transformAttr, newVal)
+				if len(newVal):
+					element.setAttribute(transformAttr, newVal)
+				else:
+					element.removeAttribute(transformAttr)
 				num += len(val) - len(newVal)
 	
 	for child in element.childNodes:

testscour.py

@@ -1217,6 +1217,96 @@ class RemoveDefsWithWhitespace(unittest.TestCase):
 		self.assertEquals(doc.getElementsByTagName('defs').length, 0,
 			'Kept defs, although it contains only whitespace or is <defs/>')
 
+class TransformIdentityMatrix(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-identity.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), '',
+			'Transform containing identity matrix not removed')
+
+class TransformRotate135(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-rotate-135.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(135)',
+			'Rotation matrix not converted to rotate(135)')
+
+class TransformRotate45(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-rotate-45.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(45)',
+			'Rotation matrix not converted to rotate(45)')
+
+class TransformRotate90(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-rotate-90.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(90)',
+			'Rotation matrix not converted to rotate(90)')
+
+class TransformRotateCCW135(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-rotate-neg-135.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(-135)',
+			'Counter-clockwise rotation matrix not converted to rotate(-135)')
+
+class TransformRotateCCW45(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-rotate-neg-45.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(-45)',
+			'Counter-clockwise rotation matrix not converted to rotate(-45)')
+
+class TransformRotateCCW90(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-rotate-neg-90.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(-90)',
+			'Counter-clockwise rotation matrix not converted to rotate(-90)')
+
+class TransformScale2by3(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-scale-2-3.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'scale(2 3)',
+			'Scaling matrix not converted to scale(2 3)')
+
+class TransformScaleMinus1(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-scale-neg-1.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'scale(-1)',
+			'Scaling matrix not converted to scale(-1)')
+
+class TransformTranslate(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-matrix-is-translate.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'translate(2 3)',
+			'Translation matrix not converted to translate(2 3)')
+
+class TransformRotation3Args(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-rotate-fold-3args.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), 'rotate(90)',
+			'Optional zeroes in rotate(angle 0 0) not removed')
+
+class TransformIdentityRotation(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-rotate-is-identity.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), '',
+			'Transform containing identity rotation not removed')
+
+class TransformIdentitySkewX(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-skewX-is-identity.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), '',
+			'Transform containing identity X-axis skew not removed')
+
+class TransformIdentitySkewY(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-skewY-is-identity.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), '',
+			'Transform containing identity Y-axis skew not removed')
+
+class TransformIdentityTranslate(unittest.TestCase):
+	def runTest(self):
+		doc = scour.scourXmlFile('unittests/transform-translate-is-identity.svg')
+		self.assertEquals(doc.getElementsByTagName('line')[0].getAttribute('transform'), '',
+			'Transform containing identity translation not removed')
+
 class DuplicateGradientsUpdateStyle(unittest.TestCase):
 	def runTest(self):
 		doc = scour.scourXmlFile('unittests/duplicate-gradients-update-style.svg',
@@ -1233,7 +1323,6 @@ class DuplicateGradientsUpdateStyle(unittest.TestCase):
 # TODO; write a test for embedding rasters
 # TODO: write a test for --disable-embed-rasters
 # TODO: write tests for --keep-editor-data
-# TODO: write tests for scouring transformations
 
 if __name__ == '__main__':
 	testcss = __import__('testcss')

unittests/adobe.svg

@@ -42,4 +42,4 @@
 	xmlns:sfw="http://ns.adobe.com/SaveForWeb/1.0/"
 	sfw:baz="1"
 	ok:baz="1" />
-</svg>
+</svg>

unittests/cascading-default-attribute-removal.svg

@@ -20,4 +20,4 @@
       <path d="m1,1z"/>
     </g>
   </g>  
-</svg>
+</svg>

unittests/cdata.svg

@@ -3,4 +3,4 @@
  <script type="application/ecmascript"><![CDATA[
   	alert('pb&j');
  ]]></script>
-</svg>
+</svg>

unittests/collapse-gradients-gradientUnits.svg

@@ -8,4 +8,4 @@
   <radialGradient id="g2" xlink:href="#g1" cx="50%" cy="50%" r="30%" gradientUnits="objectBoundingBox"/>
 </defs>
 <rect fill="url(#g2)" width="200" height="200"/>
-</svg>
+</svg>

unittests/collapse-gradients.svg

@@ -8,4 +8,4 @@
   <radialGradient id="grad2" xlink:href="#grad1" cx="100" cy="100" r="70"/>
 </defs>
 <rect fill="url(#grad2)" width="200" height="200"/>
-</svg>
+</svg>

unittests/collapse-same-path-points.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="210" height="210">
   <path stroke="yellow" fill="red" d="M100,100 L200.12345,200.12345 C215,205 185,195 200.12,200.12 Z"/>
-</svg>
+</svg>

unittests/comment-beside-xml-decl.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8" standalone="yes"?>
 <!-- Oh look a comment -->
 <svg xmlns="http://www.w3.org/2000/svg">
-</svg>
+</svg>

unittests/comments.svg

@@ -3,4 +3,4 @@
 <!-- Comment #2 -->
 <svg xmlns="http://www.w3.org/2000/svg">
 </svg>
-<!-- After -->
+<!-- After -->

unittests/commonized-referenced-elements.svg

@@ -6,4 +6,4 @@
     <circle id="e" r="20" fill="#0f0"/>
   </g>
   <use xlink:href="#e" />
-</svg>
+</svg>

unittests/consecutive-hlines.svg

@@ -3,4 +3,4 @@
 <path fill="#F00" stroke="#0F0" d="M100,100h100h100v100h-200z"/>
 <path fill="#F00" stroke="#0F0" d="M100,300h100,100v100h-200z"/>
 <path fill="#F00" stroke="#0F0" d="M100,500h300h-100v100h-200z"/>
-</svg>
+</svg>

unittests/css-reference.svg

@@ -24,4 +24,4 @@
 <rect height="300" width="300"/>
 <circle class="circ" cx="350" cy="350" r="40"/>
 
-</svg>
+</svg>

unittests/dont-collapse-gradients.svg

@@ -10,4 +10,4 @@
 </defs>
 <rect fill="url(#g2)" width="200" height="200"/>
 <rect fill="url(#g3)" width="200" height="200" y="200"/>
-</svg>
+</svg>

unittests/dont-convert-short-color-names.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
 	<rect fill="red" width="100" height="100" />
-</svg>
+</svg>

unittests/duplicate-gradient-stops-pct.svg

@@ -9,4 +9,4 @@
     </linearGradient>
  </defs>
 <rect style="fill: url(#sea-gradient) rgb(0, 0, 0);" y="0" x="0" height="100" width="100"/>
-</svg>
+</svg>

unittests/empty-g.svg

@@ -4,4 +4,4 @@
   <g transform="translate(10,10)">
     <rect width="300" height="200" fill="green" />
   </g>
-</svg>
+</svg>

unittests/empty-metadata.svg

@@ -1,3 +1,3 @@
 <svg xmlns="http://www.w3.org/2000/svg">
   <metadata></metadata>
-</svg>
+</svg>

unittests/empty-style.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" ?>
 <svg xmlns="http://www.w3.org/2000/svg">
     <style id="style1" />
-</svg>
+</svg>

unittests/fill-none.svg

@@ -2,4 +2,4 @@
 <svg xmlns="http://www.w3.org/2000/svg">
     <path style="fill: none; fill-rule: nonzero; fill-opacity: 0.5;" d="M 7.7592046,36.982095 C 7.8831049,40.873696 7.8339808,45.305308 7.8339808,49.436888  Z" />
     <path style="fill: black; fill-rule: evenodd; fill-opacity: 0.5;" d="M 7.7592046,36.982095 C 7.8831049,40.873696 7.8339808,45.305308 7.8339808,49.436888  Z" />
-</svg>
+</svg>

unittests/font-styles.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
   <rect style="font-size:20px" width="100" height="100" />
-</svg>
+</svg>

unittests/full-metadata.svg

@@ -19,4 +19,4 @@
         </rdf:Description>
       </rdf:RDF>
     </metadata>
-</svg>
+</svg>

unittests/gradient-default-attrs.svg

@@ -7,4 +7,4 @@
 <radialGradient id="g2" xlink:href="#g1" cx="50%" cy="0.5" r="50%" fx="50%" fy="0.5"/>
 <rect width="100" height="100" fill="url(#g)"/>
 <rect width="50" height="50" fill="url(#g2)"/>
-</svg>
+</svg>

unittests/groups-in-switch-with-id.svg

@@ -15,4 +15,4 @@
 <defs>
  <example:odor id="odor1423" fill="grape"/>
 </defs>
-</svg>
+</svg>

unittests/groups-in-switch.svg

@@ -15,4 +15,4 @@
 <defs>
  <example:odor id="odor1423" fill="grape"/>
 </defs>
-</svg>
+</svg>

unittests/groups-with-title-desc.svg

@@ -10,4 +10,4 @@
  <rect width="300" height="200" fill="green" />
  <circle cx="200" cy="100" r="50" fill="yellow" />
 </g>
-</svg>
+</svg>

unittests/ids-to-strip.svg

@@ -8,4 +8,4 @@
   </linearGradient>
 </defs>
 <rect id='r2' fill="url(#Polka_Dot_Pattern)" />
-</svg>
+</svg>

unittests/important-groups-in-defs.svg

@@ -9,4 +9,4 @@
 	</g>
 </defs>
 <rect fill="url(#g1)" width="100" height="100" />
-</svg>
+</svg>

unittests/inkscape.svg

@@ -4,4 +4,4 @@ xmlns:foo="http://www.inkscape.org/namespaces/inkscape"
 	inkscape:version="0.46" version="1.0">
 <inkscape:perspective inkscape:vp_x="0 : 526.18109 : 1" inkscape:vp_y="0 : 1000 : 0" inkscape:vp_z="744.09448 : 526.18109 : 1" inkscape:persp3d-origin="372.04724 : 350.78739 : 1" id="perspective3104"/>
 <rect width="300" height="200" fill="green" inkscape:collect="always" foo:bar="1"/>
-</svg>
+</svg>

unittests/metadata-with-text.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
   <metadata>This is a metadata element with only text node children</metadata>
-</svg>
+</svg>

unittests/move-common-attributes-to-grandparent.svg

@@ -7,4 +7,4 @@
   </g>
   <circle fill="#0F0" stroke="0F0" cx="50" cy="50" r="20" />
 </g>
-</svg>
+</svg>

unittests/move-common-attributes-to-parent.svg

@@ -10,4 +10,4 @@
 Goodbye
 <tspan font-style="italic">Cruel World!</tspan>
 </text>
-</svg>
+</svg>

unittests/nested-useless-groups.svg

@@ -6,4 +6,4 @@
   <circle cx="200" cy="100" r="50" fill="yellow" />
  </g>
 </g>
-</svg>
+</svg>

unittests/path-abs-to-rel.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
       <path d="M 385,201 V181 l100,-50 h20 C 505.43501,223.44223 659.42238,164.82405 714.32160,-0.0015300000 C 649.90356,227.13187 497.48814,312.46353 371.30643,277.40123 C 245.12472,242.33893 157.17674,250.88268 121.69357,12.440270 C 211.69357,149.44027 323.87473,190.08578 385.88362,201.47812 z " fill="blue"/>
-</svg>
+</svg>

unittests/path-bez-optimize.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg version="1.1" viewBox="0 0 400 400" xmlns="http://www.w3.org/2000/svg">
   <path d="m10,100c50-50,50,50,100,0,50-50,50,50,100,0" fill="none" stroke="blue" stroke-width="5"/>
-</svg>
+</svg>

unittests/path-empty-move.svg

@@ -2,4 +2,4 @@
 <svg xmlns="http://www.w3.org/2000/svg">
   <path d="m100 100 l200 100 m0 0z" />
   <path d="m100 100 v200 m0 0 100 100z" />
-</svg>
+</svg>

unittests/path-implicit-line.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
  <path stroke="#000" d="M100,100,100,200 M300,100,100,100 M300,200,300,100" fill="none"/>
-</svg>
+</svg>

unittests/path-quad-optimize.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg version="1.1" viewBox="0 0 400 400" xmlns="http://www.w3.org/2000/svg">
   <path d="m10,100q50-50,100,0,50,50,100,0" fill="none" stroke="blue" stroke-width="5"/>
-</svg>
+</svg>

unittests/path-sn.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1781 1142">
   <path d="m 0,0 l 2.e-4,0 z"/>
-</svg>
+</svg>

unittests/path-with-closepath.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
 <path fill="none" stroke="#000" d="M10,10h100v100h-100z"/>
-</svg>
+</svg>

unittests/polygon-coord.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
 	<polygon fill="blue" points="10000,50" />
-</svg>
+</svg>

unittests/polygon.svg

@@ -2,4 +2,4 @@
 <svg xmlns="http://www.w3.org/2000/svg">
 	<polygon fill="blue" points="50,50 150,50 150,150 50,150 +5e1,500.00e-1" />
 	<polygon fill="green" points="200,50 300,50 300,150 200,150" />
-</svg>
+</svg>

unittests/polyline-coord.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
 	<polyline fill="blue" points="10000,50" />
-</svg>
+</svg>

unittests/quot-in-url.svg

@@ -7,4 +7,4 @@
 	</linearGradient>
 </defs>
 <rect width="100" height="100" fill="url(&quot;#g&quot;)"/>
-</svg>
+</svg>

unittests/redundant-svg-namespace.svg

@@ -5,4 +5,4 @@
 		<title>Test</title>
 	</svg:rect>
 	<vector:rect height="100" width="100"/>
-</svg>
+</svg>

unittests/referenced-elements-1.svg

@@ -8,4 +8,4 @@
   </linearGradient>
 </defs>
 <rect id='r2' fill="url(#Polka_Dot_Pattern)" />
-</svg>
+</svg>

unittests/refs-in-defs.svg

@@ -5,4 +5,4 @@
    <g id="G"><use xlink:href="#L"/> <path stroke="#000000" d="M0,100 100,0"/></g>
   </defs>
   <use xlink:href="#G"/>
-</svg>
+</svg>

unittests/remove-unused-attributes-on-parent.svg

@@ -5,4 +5,4 @@
   <rect fill="#FFF" stroke="#000" width="200" height="100"/>
   <circle fill="#0F0" stroke="#0F0" cx="50" cy="50" r="20"/>
  </g>
-</svg>
+</svg>

unittests/scour-lengths.svg

@@ -2,4 +2,4 @@
 <svg xmlns="http://www.w3.org/2000/svg" x="1.0000000" y="1.0000000">
 	<rect x="123.4567" y="123.00" width="300.00001" height="1E+02" fill="lime" />
 	<rect x="123.4567px" y="35.000ex" width="300.00001pt" height="5E+01%" fill="blue" />
-</svg>
+</svg>

unittests/shorten-ids.svg

@@ -7,4 +7,4 @@
 		</linearGradient>
 	</defs>
 	<rect fill="url(#this-abomination-should-be-shortened-to-a-single-letter)" x="20" y="20" width="160" height="160" />
-</svg>
+</svg>

unittests/straight-curve.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
 	<path fill="blue" d="M10,10c10,10,30,30,40,40l40-40z"/>
-</svg>
+</svg>

unittests/stroke-none.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
     <path id="p" fill="black" style="stroke: none; stroke-width: 1px; stroke-linecap: butt; stroke-dasharray: none; stroke-dashoffset: 2; stroke-linejoin: miter; stroke-opacity: 1;" d="M 7.7592046,36.982095 C 7.8831049,40.873696 7.8339808,45.305308 7.8339808,49.436888  Z" />
-</svg>
+</svg>

unittests/stroke-nowidth.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
     <path id="p" fill="black" style="stroke: rgb(0, 0, 0); stroke-width: 0; stroke-linecap: butt; stroke-dasharray: none; stroke-dashoffset: 2; stroke-linejoin: miter; stroke-opacity: 1;" d="M 7.7592046,36.982095 C 7.8831049,40.873696 7.8339808,45.305308 7.8339808,49.436888  Z" />
-</svg>
+</svg>

unittests/stroke-transparent.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
     <path id="p" fill="black" style="stroke: rgb(0, 0, 0); stroke-width: 1px; stroke-linecap: butt; stroke-dasharray: none; stroke-dashoffset: 2; stroke-linejoin: miter; stroke-opacity: 0;" d="M 7.7592046,36.982095 C 7.8831049,40.873696 7.8339808,45.305308 7.8339808,49.436888  Z" />
-</svg>
+</svg>

unittests/style-to-attr.svg

@@ -6,4 +6,4 @@
   </marker>
 </defs>
 <line x2="100" style="stroke:#000; marker-start:url(#m); marker-end:url(#m); marker-mid: url(#m)" />
-</svg>
+</svg>

unittests/transform-matrix-is-identity.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(1 0 0 1 0 0)"/>
+</svg>

unittests/transform-matrix-is-rotate-135.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(-0.70710678118654746 0.70710678118654757 -0.70710678118654757 -0.70710678118654746 0 0)"/>
+</svg>

unittests/transform-matrix-is-rotate-45.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(0.70710678118654757 0.70710678118654746 -0.70710678118654746 0.70710678118654757 0 0)"/>
+</svg>

unittests/transform-matrix-is-rotate-90.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(0 1 -1 0 0 0)"/>
+</svg>

unittests/transform-matrix-is-rotate-neg-135.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(-0.70710678118654746 -0.70710678118654757 0.70710678118654757 -0.70710678118654746 0 0)"/>
+</svg>

unittests/transform-matrix-is-rotate-neg-45.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(0.70710678118654757 -0.70710678118654746 0.70710678118654746 0.70710678118654757 0 0)"/>
+</svg>

unittests/transform-matrix-is-rotate-neg-90.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(0 -1 1 0 0 0)"/>
+</svg>

unittests/transform-matrix-is-scale-2-3.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 18 27">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(2 0 0 3 0 0)"/>
+</svg>

unittests/transform-matrix-is-scale-neg-1.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 -9 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(-1 0 0 -1 0 0)"/>
+</svg>

unittests/transform-matrix-is-translate.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="2 3 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="matrix(1 0 0 1 2 3)"/>
+</svg>

unittests/transform-rotate-fold-3args.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="rotate(90 0 0.0)"/>
+ <!--  optional zero trailing args to transform type rotate get removed -->
+</svg>

unittests/transform-rotate-is-identity.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 9 9">
+ <line transform="rotate(-300) rotate(-60)" stroke="red" y1="9" x1="9"/>
+</svg>

unittests/transform-skewX-is-identity.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="skewX(0)"/>
+ <!--  skewX(0) is the identity transform, which can safely be removed -->
+</svg>

unittests/transform-skewY-is-identity.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="skewY(0)"/>
+ <!--  skewY(0) is the identity transform, which can safely be removed -->
+</svg>

unittests/transform-translate-is-identity.svg

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="-9 0 9 9">
+ <line stroke="rgba(255,0,0,0.5)" y1="9" x1="9" transform="translate(0, 20) translate(10) translate(-10 -20.0)"/>
+ <line stroke="rgba(0,0,255,0.5)" y1="9" x1="9"/>
+</svg>

unittests/unreferenced-linearGradient.svg

@@ -3,4 +3,4 @@
 <linearGradient id="Polka_Dot_Pattern">
   <stop offset="0.5" stop-color="blue" />
 </linearGradient>
-</svg>
+</svg>

unittests/unreferenced-pattern.svg

@@ -3,4 +3,4 @@
 <pattern id="Polka_Dot_Pattern">
   <polygon fill="none" points="71.125,-1.896 2.125,-1.896 2.125,-70.896 71.125,-70.896" />
 </pattern>
-</svg>
+</svg>

unittests/unreferenced-radialGradient.svg

@@ -3,4 +3,4 @@
 <radialGradient id="Polka_Dot_Pattern">
   <stop offset="0.5" stop-color="blue" />
 </radialGradient>
-</svg>
+</svg>

unittests/utf8.svg

@@ -2,4 +2,4 @@
 <svg xmlns:xlink="http://www.w3.org/1999/xlink" 
    xmlns="http://www.w3.org/2000/svg">
   <desc>ú</desc>
-</svg>
+</svg>

unittests/whitespace-nested.svg

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg">
  <text xml:space="preserve"><tspan font-style="italic">Use <tspan font-style="bold">bold</tspan> text</tspan></text>
-</svg>
+</svg>

unittests/xml-namespace-attrs.svg

@@ -21,4 +21,4 @@
   <rect height="69.247704" width="319.89233" fill="url(#linearGradient1657)"/>
   <rect fill="url(#linearGradient2465)" width="319.99103" height="69.247704"/>
 
-</svg>
+</svg>