[AAT] Support lcar table

Lib/fontTools/ttLib/tables/__init__.py

@@ -65,6 +65,7 @@ def _moduleFinderHint():
 	from . import _h_h_e_a
 	from . import _h_m_t_x
 	from . import _k_e_r_n
+	from . import _l_c_a_r
 	from . import _l_o_c_a
 	from . import _l_t_a_g
 	from . import _m_a_x_p

Lib/fontTools/ttLib/tables/_l_c_a_r.py

@@ -0,0 +1,7 @@
+from __future__ import print_function, division, absolute_import
+from fontTools.misc.py23 import *
+from .otBase import BaseTTXConverter
+
+
+class table__l_c_a_r(BaseTTXConverter):
+	pass

README.rst

@@ -102,8 +102,8 @@ The following tables are currently supported:
     OS/2, SING, STAT, SVG, TSI0, TSI1, TSI2, TSI3, TSI5, TSIB, TSID,
     TSIJ, TSIP, TSIS, TSIV, TTFA, VDMX, VORG, VVAR, avar, cmap, cvar,
     cvt, feat, fpgm, fvar, gasp, glyf, gvar, hdmx, head, hhea, hmtx,
-    kern, loca, ltag, maxp, meta, name, post, prep, sbix, trak, vhea
+    kern, lcar, loca, ltag, maxp, meta, name, post, prep, sbix, trak,
-    and vmtx
+    vhea and vmtx
 .. end table list
 
 Other tables are dumped as hexadecimal data.

Tests/ttLib/tables/_l_c_a_r_test.py

@@ -0,0 +1,107 @@
+from __future__ import print_function, division, absolute_import
+from fontTools.misc.py23 import *
+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"/>',
+    '<Format value="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>',
+]
+
+
+# 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"/>',
+    '<Format value="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>',
+]
+
+
+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())