Merge pull request #1 from anthrotype/xml-indent

PR819 fixes: don't write empty <assembly> elements

Lib/fontTools/ttLib/tables/_g_l_y_f.py

@@ -358,7 +358,6 @@ class Glyph(object):
 				writer.begintag("instructions")
 				writer.newline()
 				self.program.toXML(writer, ttFont)
-				writer.newline()
 				writer.endtag("instructions")
 				writer.newline()
 		else:
@@ -379,7 +378,6 @@ class Glyph(object):
 				writer.begintag("instructions")
 				writer.newline()
 				self.program.toXML(writer, ttFont)
-				writer.newline()
 				writer.endtag("instructions")
 				writer.newline()
 

Lib/fontTools/ttLib/tables/ttProgram.py

@@ -246,7 +246,10 @@ class Program(object):
 				writer.newline()
 				writer.dumphex(self.getBytecode())
 				writer.endtag("bytecode")
+				writer.newline()
 			else:
+				if not assembly:
+					return
 				writer.begintag("assembly")
 				writer.newline()
 				i = 0
@@ -279,11 +282,16 @@ class Program(object):
 					if _indentRE.match(instr):
 						indent += 1
 				writer.endtag("assembly")
+				writer.newline()
 		else:
+			bytecode = self.getBytecode()
+			if not bytecode:
+				return
 			writer.begintag("bytecode")
 			writer.newline()
-			writer.dumphex(self.getBytecode())
+			writer.dumphex(bytecode)
 			writer.endtag("bytecode")
+			writer.newline()
 
 	def fromXML(self, name, attrs, content, ttFont):
 		if name == "assembly":
@@ -295,7 +303,7 @@ class Program(object):
 			self.fromBytecode(readHex(content))
 
 	def _assemble(self):
-		assembly = self.assembly
+		assembly = getattr(self, 'assembly', [])
 		if isinstance(assembly, type([])):
 			assembly = ' '.join(assembly)
 		bytecode = []
@@ -420,7 +428,7 @@ class Program(object):
 	def _disassemble(self, preserve=False):
 		assembly = []
 		i = 0
-		bytecode = self.bytecode
+		bytecode = getattr(self, 'bytecode', [])
 		numBytecode = len(bytecode)
 		while i < numBytecode:
 			op = bytecode[i]

Tests/subset/data/expect_keep_colr.ttx

@@ -37,8 +37,6 @@
         <pt x="334" y="0" on="0"/>
       </contour>
       <instructions>
-        <assembly>
-        </assembly>
       </instructions>
     </TTGlyph>
 
@@ -64,8 +62,6 @@
         <pt x="347" y="770" on="0"/>
       </contour>
       <instructions>
-        <assembly>
-        </assembly>
       </instructions>
     </TTGlyph>
 
@@ -111,8 +107,6 @@
         <pt x="320" y="430" on="0"/>
       </contour>
       <instructions>
-        <assembly>
-        </assembly>
       </instructions>
     </TTGlyph>
 
@@ -178,8 +172,6 @@
         <pt x="320" y="430" on="0"/>
       </contour>
       <instructions>
-        <assembly>
-        </assembly>
       </instructions>
     </TTGlyph>