166 lines
6.0 KiB
Python
166 lines
6.0 KiB
Python
# 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())
|