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from fontTools.ttLib import TTFont, newTable, getTableModule
from fontTools.ttLib.tables.O_S_2f_2 import *
import unittest
class OS2TableTest(unittest.TestCase):
@staticmethod
def makeOS2_cmap(mapping):
font = TTFont()
font["OS/2"] = os2 = newTable("OS/2")
os2.version = 4
font["cmap"] = cmap = newTable("cmap")
st = getTableModule("cmap").CmapSubtable.newSubtable(4)
st.platformID, st.platEncID, st.language = 3, 1, 0
st.cmap = mapping
cmap.tables = []
cmap.tables.append(st)
return font, os2, cmap
def test_getUnicodeRanges(self):
table = table_O_S_2f_2()
table.ulUnicodeRange1 = 0xFFFFFFFF
table.ulUnicodeRange2 = 0xFFFFFFFF
table.ulUnicodeRange3 = 0xFFFFFFFF
table.ulUnicodeRange4 = 0xFFFFFFFF
bits = table.getUnicodeRanges()
for i in range(127):
self.assertIn(i, bits)
def test_setUnicodeRanges(self):
table = table_O_S_2f_2()
table.ulUnicodeRange1 = 0
table.ulUnicodeRange2 = 0
table.ulUnicodeRange3 = 0
table.ulUnicodeRange4 = 0
bits = set(range(123))
table.setUnicodeRanges(bits)
self.assertEqual(table.getUnicodeRanges(), bits)
with self.assertRaises(ValueError):
table.setUnicodeRanges([-1, 127, 255])
def test_recalcUnicodeRanges(self):
font, os2, cmap = self.makeOS2_cmap(
{0x0041: "A", 0x03B1: "alpha", 0x0410: "Acyr"}
)
os2.setUnicodeRanges({0, 1, 9})
# 'pruneOnly' will clear any bits for which there's no intersection:
# bit 1 ('Latin 1 Supplement'), in this case. However, it won't set
# bit 7 ('Greek and Coptic') despite the "alpha" character is present.
self.assertEqual(os2.recalcUnicodeRanges(font, pruneOnly=True), {0, 9})
# try again with pruneOnly=False: bit 7 is now set.
self.assertEqual(os2.recalcUnicodeRanges(font), {0, 7, 9})
# add a non-BMP char from 'Mahjong Tiles' block (bit 122)
cmap.tables[0].cmap[0x1F000] = "eastwindtile"
# the bit 122 and the special bit 57 ('Non Plane 0') are also enabled
self.assertEqual(os2.recalcUnicodeRanges(font), {0, 7, 9, 57, 122})
def test_intersectUnicodeRanges(self):
self.assertEqual(intersectUnicodeRanges([0x0410]), {9})
self.assertEqual(intersectUnicodeRanges([0x0410, 0x1F000]), {9, 57, 122})
self.assertEqual(
intersectUnicodeRanges([0x0410, 0x1F000], inverse=True),
(set(range(123)) - {9, 57, 122}),
)
def test_getCodePageRanges(self):
table = table_O_S_2f_2()
# version 0 doesn't define these fields so by definition defines no cp ranges
table.version = 0
self.assertEqual(table.getCodePageRanges(), set())
# version 1 and above do contain ulCodePageRange1 and 2 fields
table.version = 1
table.ulCodePageRange1 = 0xFFFFFFFF
table.ulCodePageRange2 = 0xFFFFFFFF
bits = table.getCodePageRanges()
for i in range(63):
self.assertIn(i, bits)
def test_setCodePageRanges(self):
table = table_O_S_2f_2()
table.version = 4
table.ulCodePageRange1 = 0
table.ulCodePageRange2 = 0
bits = set(range(64))
table.setCodePageRanges(bits)
self.assertEqual(table.getCodePageRanges(), bits)
with self.assertRaises(ValueError):
table.setCodePageRanges([-1])
with self.assertRaises(ValueError):
table.setCodePageRanges([64])
with self.assertRaises(ValueError):
table.setCodePageRanges([255])
def test_setCodePageRanges_bump_version(self):
# Setting codepage ranges on a OS/2 table version 0 automatically makes it
# a version 1 table
table = table_O_S_2f_2()
table.version = 0
self.assertEqual(table.getCodePageRanges(), set())
table.setCodePageRanges({0, 1, 2})
self.assertEqual(table.getCodePageRanges(), {0, 1, 2})
self.assertEqual(table.version, 1)
def test_recalcCodePageRanges(self):
font, os2, cmap = self.makeOS2_cmap(
{ord("A"): "A", ord("Ά"): "Alphatonos", ord("Б"): "Be"}
)
os2.setCodePageRanges({0, 2, 9})
# With pruneOnly=True, should clear any CodePage for which there are no
# characters in the cmap.
self.assertEqual(os2.recalcCodePageRanges(font, pruneOnly=True), {2})
# With pruneOnly=False, should also set CodePages not initially set.
self.assertEqual(os2.recalcCodePageRanges(font), {2, 3})
# Add a Korean character, should set CodePage 21 (Korean Johab)
cmap.tables[0].cmap[ord("곴")] = "goss"
self.assertEqual(os2.recalcCodePageRanges(font), {2, 3, 21})
# Remove all characters from cmap, should still set CodePage 0 (Latin 1)
cmap.tables[0].cmap = {}
self.assertEqual(os2.recalcCodePageRanges(font), {0})
if __name__ == "__main__":
import sys
sys.exit(unittest.main())
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