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from fontTools.misc.testTools import FakeFont, getXML, parseXML
from fontTools.misc.textTools import deHexStr, hexStr
from fontTools.ttLib import newTable
import unittest
# Example: Format 0 Ligature Caret Table
# https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6lcar.html
LCAR_FORMAT_0_DATA = deHexStr(
"0001 0000 0000 " # 0: Version=1.0, Format=0
"0006 0004 0002 " # 6: LookupFormat=6, UnitSize=4, NUnits=2
"0008 0001 0000 " # 12: SearchRange=8, EntrySelector=1, RangeShift=0
"0001 001E " # 18: Glyph=1 (f_r), OffsetOfLigCaretEntry=30
"0003 0022 " # 22: Glyph=3 (f_f_l), OffsetOfLigCaretEntry=34
"FFFF 0000 " # 26: Glyph=<end>, OffsetOfLigCaretEntry=0
"0001 00DC " # 30: DivisionPointCount=1, DivisionPoint=[220]
"0002 00EF 01D8 " # 34: DivisionPointCount=2, DivisionPoint=[239, 475]
) # 40: <end>
assert len(LCAR_FORMAT_0_DATA) == 40
LCAR_FORMAT_0_XML = [
'<Version value="0x00010000"/>',
'<LigatureCarets Format="0">',
" <Carets>",
' <Lookup glyph="f_f_l">',
" <!-- DivsionPointCount=2 -->",
' <DivisionPoint index="0" value="239"/>',
' <DivisionPoint index="1" value="472"/>',
" </Lookup>",
' <Lookup glyph="f_r">',
" <!-- DivsionPointCount=1 -->",
' <DivisionPoint index="0" value="220"/>',
" </Lookup>",
" </Carets>",
"</LigatureCarets>",
]
# Example: Format 1 Ligature Caret Table
# https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6lcar.html
LCAR_FORMAT_1_DATA = deHexStr(
"0001 0000 0001 " # 0: Version=1.0, Format=1
"0006 0004 0002 " # 6: LookupFormat=6, UnitSize=4, NUnits=2
"0008 0001 0000 " # 12: SearchRange=8, EntrySelector=1, RangeShift=0
"0001 001E " # 18: Glyph=1 (f_r), OffsetOfLigCaretEntry=30
"0003 0022 " # 22: Glyph=3 (f_f_l), OffsetOfLigCaretEntry=34
"FFFF 0000 " # 26: Glyph=<end>, OffsetOfLigCaretEntry=0
"0001 0032 " # 30: DivisionPointCount=1, DivisionPoint=[50]
"0002 0037 004B " # 34: DivisionPointCount=2, DivisionPoint=[55, 75]
) # 40: <end>
assert len(LCAR_FORMAT_1_DATA) == 40
LCAR_FORMAT_1_XML = [
'<Version value="0x00010000"/>',
'<LigatureCarets Format="1">',
" <Carets>",
' <Lookup glyph="f_f_l">',
" <!-- DivsionPointCount=2 -->",
' <DivisionPoint index="0" value="55"/>',
' <DivisionPoint index="1" value="75"/>',
" </Lookup>",
' <Lookup glyph="f_r">',
" <!-- DivsionPointCount=1 -->",
' <DivisionPoint index="0" value="50"/>',
" </Lookup>",
" </Carets>",
"</LigatureCarets>",
]
class LCARTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.maxDiff = None
cls.font = FakeFont([".notdef", "f_r", "X", "f_f_l"])
def test_decompile_toXML_format0(self):
table = newTable("lcar")
table.decompile(LCAR_FORMAT_0_DATA, self.font)
self.assertEqual(getXML(table.toXML), LCAR_FORMAT_0_XML)
def test_compile_fromXML_format0(self):
table = newTable("lcar")
for name, attrs, content in parseXML(LCAR_FORMAT_0_XML):
table.fromXML(name, attrs, content, font=self.font)
self.assertEqual(hexStr(table.compile(self.font)), hexStr(LCAR_FORMAT_0_DATA))
def test_decompile_toXML_format1(self):
table = newTable("lcar")
table.decompile(LCAR_FORMAT_1_DATA, self.font)
self.assertEqual(getXML(table.toXML), LCAR_FORMAT_1_XML)
def test_compile_fromXML_format1(self):
table = newTable("lcar")
for name, attrs, content in parseXML(LCAR_FORMAT_1_XML):
table.fromXML(name, attrs, content, font=self.font)
self.assertEqual(hexStr(table.compile(self.font)), hexStr(LCAR_FORMAT_1_DATA))
if __name__ == "__main__":
import sys
sys.exit(unittest.main())
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