| # coding: utf-8 |
| from fontTools.misc.testTools import FakeFont, getXML, parseXML |
| from fontTools.misc.textTools import deHexStr, hexStr |
| from fontTools.ttLib import newTable |
| import unittest |
| |
| |
| # This is the anchor points table of the first font file in |
| # “/Library/Fonts/Devanagari Sangam MN.ttc” on macOS 10.12.6. |
| # For testing, we’ve changed the GlyphIDs to smaller values. |
| # Also, in the AATLookup, we’ve changed GlyphDataOffset value |
| # for the end-of-table marker from 0xFFFF to 0 since that is |
| # what our encoder emits. (The value for end-of-table markers |
| # does not actually matter). |
| ANKR_FORMAT_0_DATA = deHexStr( |
| "0000 0000 " # 0: Format=0, Flags=0 |
| "0000 000C " # 4: LookupTableOffset=12 |
| "0000 0024 " # 8: GlyphDataTableOffset=36 |
| "0006 0004 0002 " # 12: LookupFormat=6, UnitSize=4, NUnits=2 |
| "0008 0001 0000 " # 18: SearchRange=8, EntrySelector=1, RangeShift=0 |
| "0001 0000 " # 24: Glyph=A, Offset=0 (+GlyphDataTableOffset=36) |
| "0003 0008 " # 28: Glyph=C, Offset=8 (+GlyphDataTableOffset=44) |
| "FFFF 0000 " # 32: Glyph=<end>, Offset=<n/a> |
| "0000 0001 " # 36: GlyphData[A].NumPoints=1 |
| "0235 045E " # 40: GlyphData[A].Points[0].X=565, .Y=1118 |
| "0000 0001 " # 44: GlyphData[C].NumPoints=1 |
| "FED2 045E " # 48: GlyphData[C].Points[0].X=-302, .Y=1118 |
| ) # 52: <end> |
| assert len(ANKR_FORMAT_0_DATA) == 52 |
| |
| |
| ANKR_FORMAT_0_XML = [ |
| '<AnchorPoints Format="0">', |
| ' <Flags value="0"/>', |
| " <Anchors>", |
| ' <Lookup glyph="A">', |
| " <!-- AnchorPointCount=1 -->", |
| ' <AnchorPoint index="0">', |
| ' <XCoordinate value="565"/>', |
| ' <YCoordinate value="1118"/>', |
| " </AnchorPoint>", |
| " </Lookup>", |
| ' <Lookup glyph="C">', |
| " <!-- AnchorPointCount=1 -->", |
| ' <AnchorPoint index="0">', |
| ' <XCoordinate value="-302"/>', |
| ' <YCoordinate value="1118"/>', |
| " </AnchorPoint>", |
| " </Lookup>", |
| " </Anchors>", |
| "</AnchorPoints>", |
| ] |
| |
| |
| # Same data as ANKR_FORMAT_0_DATA, but with chunks of unused data |
| # whose presence should not stop us from decompiling the table. |
| ANKR_FORMAT_0_STRAY_DATA = deHexStr( |
| "0000 0000 " # 0: Format=0, Flags=0 |
| "0000 0018 " # 4: LookupTableOffset=24 |
| "0000 0034 " # 8: GlyphDataTableOffset=52 |
| "DEAD BEEF CAFE " # 12: <stray data> |
| "DEAD BEEF CAFE " # 18: <stray data> |
| "0006 0004 0002 " # 24: LookupFormat=6, UnitSize=4, NUnits=2 |
| "0008 0001 0000 " # 30: SearchRange=8, EntrySelector=1, RangeShift=0 |
| "0001 0000 " # 36: Glyph=A, Offset=0 (+GlyphDataTableOffset=52) |
| "0003 0008 " # 40: Glyph=C, Offset=8 (+GlyphDataTableOffset=60) |
| "FFFF 0000 " # 44: Glyph=<end>, Offset=<n/a> |
| "BEEF F00D " # 48: <stray data> |
| "0000 0001 " # 52: GlyphData[A].NumPoints=1 |
| "0235 045E " # 56: GlyphData[A].Points[0].X=565, .Y=1118 |
| "0000 0001 " # 60: GlyphData[C].NumPoints=1 |
| "FED2 045E " # 64: GlyphData[C].Points[0].X=-302, .Y=1118 |
| ) # 68: <end> |
| assert len(ANKR_FORMAT_0_STRAY_DATA) == 68 |
| |
| |
| # Constructed test case where glyphs A and D share the same anchor data. |
| ANKR_FORMAT_0_SHARING_DATA = deHexStr( |
| "0000 0000 " # 0: Format=0, Flags=0 |
| "0000 000C " # 4: LookupTableOffset=12 |
| "0000 0028 " # 8: GlyphDataTableOffset=40 |
| "0006 0004 0003 " # 12: LookupFormat=6, UnitSize=4, NUnits=3 |
| "0008 0001 0004 " # 18: SearchRange=8, EntrySelector=1, RangeShift=4 |
| "0001 0000 " # 24: Glyph=A, Offset=0 (+GlyphDataTableOffset=36) |
| "0003 0008 " # 28: Glyph=C, Offset=8 (+GlyphDataTableOffset=44) |
| "0004 0000 " # 32: Glyph=D, Offset=0 (+GlyphDataTableOffset=36) |
| "FFFF 0000 " # 36: Glyph=<end>, Offset=<n/a> |
| "0000 0001 " # 40: GlyphData[A].NumPoints=1 |
| "0235 045E " # 44: GlyphData[A].Points[0].X=565, .Y=1118 |
| "0000 0002 " # 48: GlyphData[C].NumPoints=2 |
| "000B 000C " # 52: GlyphData[C].Points[0].X=11, .Y=12 |
| "001B 001C " # 56: GlyphData[C].Points[1].X=27, .Y=28 |
| ) # 60: <end> |
| assert len(ANKR_FORMAT_0_SHARING_DATA) == 60 |
| |
| |
| ANKR_FORMAT_0_SHARING_XML = [ |
| '<AnchorPoints Format="0">', |
| ' <Flags value="0"/>', |
| " <Anchors>", |
| ' <Lookup glyph="A">', |
| " <!-- AnchorPointCount=1 -->", |
| ' <AnchorPoint index="0">', |
| ' <XCoordinate value="565"/>', |
| ' <YCoordinate value="1118"/>', |
| " </AnchorPoint>", |
| " </Lookup>", |
| ' <Lookup glyph="C">', |
| " <!-- AnchorPointCount=2 -->", |
| ' <AnchorPoint index="0">', |
| ' <XCoordinate value="11"/>', |
| ' <YCoordinate value="12"/>', |
| " </AnchorPoint>", |
| ' <AnchorPoint index="1">', |
| ' <XCoordinate value="27"/>', |
| ' <YCoordinate value="28"/>', |
| " </AnchorPoint>", |
| " </Lookup>", |
| ' <Lookup glyph="D">', |
| " <!-- AnchorPointCount=1 -->", |
| ' <AnchorPoint index="0">', |
| ' <XCoordinate value="565"/>', |
| ' <YCoordinate value="1118"/>', |
| " </AnchorPoint>", |
| " </Lookup>", |
| " </Anchors>", |
| "</AnchorPoints>", |
| ] |
| |
| |
| class ANKRTest(unittest.TestCase): |
| @classmethod |
| def setUpClass(cls): |
| cls.maxDiff = None |
| cls.font = FakeFont([".notdef", "A", "B", "C", "D"]) |
| |
| def decompileToXML(self, data, xml): |
| table = newTable("ankr") |
| table.decompile(data, self.font) |
| self.assertEqual(getXML(table.toXML), xml) |
| |
| def compileFromXML(self, xml, data): |
| table = newTable("ankr") |
| for name, attrs, content in parseXML(xml): |
| table.fromXML(name, attrs, content, font=self.font) |
| self.assertEqual(hexStr(table.compile(self.font)), hexStr(data)) |
| |
| def roundtrip(self, data, xml): |
| self.decompileToXML(data, xml) |
| self.compileFromXML(xml, data) |
| |
| def testFormat0(self): |
| self.roundtrip(ANKR_FORMAT_0_DATA, ANKR_FORMAT_0_XML) |
| |
| def testFormat0_stray(self): |
| self.decompileToXML(ANKR_FORMAT_0_STRAY_DATA, ANKR_FORMAT_0_XML) |
| |
| def testFormat0_sharing(self): |
| self.roundtrip(ANKR_FORMAT_0_SHARING_DATA, ANKR_FORMAT_0_SHARING_XML) |
| |
| |
| if __name__ == "__main__": |
| import sys |
| |
| sys.exit(unittest.main()) |
