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# The following functions are generated by running:
# utils/gen-vowel-constraints.py ms-use/IndicShapingInvalidCluster.txt
from fontFeatures.shaperLib.Buffer import BufferItem
DOTTED_CIRCLE = 0x25CC
def _insert_dotted_circle(buf, index):
dotted_circle = BufferItem.new_unicode(DOTTED_CIRCLE)
buf.items.insert(index, dotted_circle)
def preprocess_text_vowel_constraints(buffer):
if buffer.script == "Devanagari":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0905:
if buffer.items[i + 1].codepoint in [
0x093A,
0x093B,
0x093E,
0x0945,
0x0946,
0x0949,
0x094A,
0x094B,
0x094C,
0x094F,
0x0956,
0x0957,
]:
matched = True
if buffer.items[i].codepoint == 0x0906:
if buffer.items[i + 1].codepoint in [
0x093A,
0x0945,
0x0946,
0x0947,
0x0948,
]:
matched = True
if buffer.items[i].codepoint == 0x0909:
matched = 0x0941 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x090F:
if buffer.items[i + 1].codepoint in [0x0945, 0x0946, 0x0947]:
matched = True
if buffer.items[i].codepoint == 0x0930:
if (
0x094D == buffer.items[i + 1].codepoint
and i + 2 < len(buffer.items)
and 0x0907 == buffer.items[i + 2].codepoint
):
i = i + 1
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Bengali":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0985:
matched = 0x09BE == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x098B:
matched = 0x09C3 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x098C:
matched = 0x09E2 == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Gurmukhi":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0A05:
if buffer.items[i + 1].codepoint in [0x0A3E, 0x0A48, 0x0A4C]:
matched = True
if buffer.items[i].codepoint == 0x0A72:
if buffer.items[i + 1].codepoint in [0x0A3F, 0x0A40, 0x0A47]:
matched = True
if buffer.items[i].codepoint == 0x0A73:
if buffer.items[i + 1].codepoint in [0x0A41, 0x0A42, 0x0A4B]:
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Gujarati":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0A85:
if buffer.items[i + 1].codepoint in [
0x0ABE,
0x0AC5,
0x0AC7,
0x0AC8,
0x0AC9,
0x0ACB,
0x0ACC,
]:
matched = True
if buffer.items[i].codepoint == 0x0AC5:
matched = 0x0ABE == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Oriya":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0B05:
matched = 0x0B3E == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint in [0x0B0F, 0x0B13]:
matched = 0x0B57 == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Tamil":
i = 0
while i < len(buffer.items) - 1:
matched = False
if (
0x0B85 == buffer.items[i].codepoint
and 0x0BC2 == buffer.items[i + 1].codepoint
):
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Telugu":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0C12:
if buffer.items[i + 1].codepoint in [0x0C4C, 0x0C55]:
matched = True
if buffer.items[i].codepoint in [0x0C3F, 0x0C46, 0x0C4A]:
matched = 0x0C55 == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Kannada":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint in [0x0C89, 0x0C8B]:
matched = 0x0CBE == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x0C92:
matched = 0x0CCC == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Malayalam":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint in [0x0D07, 0x0D09]:
matched = 0x0D57 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x0D0E:
matched = 0x0D46 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x0D12:
if buffer.items[i + 1].codepoint in [0x0D3E, 0x0D57]:
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Sinhala":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x0D85:
if buffer.items[i + 1].codepoint in [0x0DCF, 0x0DD0, 0x0DD1]:
matched = True
if buffer.items[i].codepoint in [0x0D8B, 0x0D8F, 0x0D94]:
matched = 0x0DDF == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x0D8D:
matched = 0x0DD8 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x0D91:
if buffer.items[i + 1].codepoint in [
0x0DCA,
0x0DD9,
0x0DDA,
0x0DDC,
0x0DDD,
0x0DDE,
]:
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Brahmi":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x11005:
matched = 0x11038 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x1100B:
matched = 0x1103E == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x1100F:
matched = 0x11042 == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Khudawadi":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x112B0:
if buffer.items[i + 1].codepoint in [
0x112E0,
0x112E5,
0x112E6,
0x112E7,
0x112E8,
]:
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Tirhuta":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x11481:
matched = 0x114B0 == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint in [0x1148B, 0x1148D]:
matched = 0x114BA == buffer.items[i + 1].codepoint
if buffer.items[i].codepoint == 0x114AA:
if buffer.items[i + 1].codepoint in [0x114B5, 0x114B6]:
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Modi":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint in [0x11600, 0x11601]:
if buffer.items[i + 1].codepoint in [0x11639, 0x1163A]:
matched = True
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
if buffer.script == "Takri":
i = 0
while i < len(buffer.items) - 1:
matched = False
if buffer.items[i].codepoint == 0x11680:
if buffer.items[i + 1].codepoint in [0x116AD, 0x116B4, 0x116B5]:
matched = True
if buffer.items[i].codepoint == 0x11686:
matched = 0x116B2 == buffer.items[i + 1].codepoint
i = i + 1
if matched:
_insert_dotted_circle(buffer, i)
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