files = [open (x, encoding='utf-8') for x in sys.argv[1:]]
headers = [[f.readline () for i in range (2)] for f in files]
unicode_data = [{} for _ in files] for i, f in enumerate (files): for line in f:
j = line.find ('#') if j >= 0:
line = line[:j]
fields = [x.strip () for x in line.split (';')] if len (fields) == 1: continue
uu = fields[0].split ('..')
start = int (uu[0], 16) if len (uu) == 1:
end = start else:
end = int (uu[1], 16)
t = fields[1]
for u in range (start, end + 1):
unicode_data[i][u] = t
# Merge data into one dict:
defaults = ('Other', 'Not_Applicable', 'No_Block')
combined = {} for i,d in enumerate (unicode_data): for u,v in d.items (): if i == 2 andnot u in combined: continue ifnot u in combined:
combined[u] = list (defaults)
combined[u][i] = v
combined = {k:v for k,v in combined.items() if k in ALLOWED_SINGLES or v[2] in ALLOWED_BLOCKS}
# These should resolve to the position of the last part of the split sequence. 'Bottom_And_Right' : 'POST_C', 'Left_And_Right' : 'POST_C', 'Top_And_Bottom' : 'BELOW_C', 'Top_And_Bottom_And_Left' : 'BELOW_C', 'Top_And_Bottom_And_Right' : 'POST_C', 'Top_And_Left' : 'ABOVE_C', 'Top_And_Left_And_Right' : 'POST_C', 'Top_And_Right' : 'POST_C',
# These are the variation-selectors. They only appear in the Myanmar grammar # but are not Myanmar-specific
0xFE00: 'VS',
0xFE01: 'VS',
0xFE02: 'VS',
0xFE03: 'VS',
0xFE04: 'VS',
0xFE05: 'VS',
0xFE06: 'VS',
0xFE07: 'VS',
0xFE08: 'VS',
0xFE09: 'VS',
0xFE0A: 'VS',
0xFE0B: 'VS',
0xFE0C: 'VS',
0xFE0D: 'VS',
0xFE0E: 'VS',
0xFE0F: 'VS',
# These appear in the OT Myanmar spec, but are not Myanmar-specific
0x2015: 'PLACEHOLDER',
0x2022: 'PLACEHOLDER',
0x25FB: 'PLACEHOLDER',
0x25FC: 'PLACEHOLDER',
0x25FD: 'PLACEHOLDER',
0x25FE: 'PLACEHOLDER',
# Indic
0x0930: 'Ra', # Devanagari
0x09B0: 'Ra', # Bengali
0x09F0: 'Ra', # Bengali
0x0A30: 'Ra', # Gurmukhi No Reph
0x0AB0: 'Ra', # Gujarati
0x0B30: 'Ra', # Oriya
0x0BB0: 'Ra', # Tamil No Reph
0x0C30: 'Ra', # Telugu Reph formed only with ZWJ
0x0CB0: 'Ra', # Kannada
0x0D30: 'Ra', # Malayalam No Reph, Logical Repha
# The following act more like the Bindus.
0x0953: 'SM',
0x0954: 'SM',
# U+0A40 GURMUKHI VOWEL SIGN II may be preceded by U+0A02 GURMUKHI SIGN BINDI.
0x0A40: 'MPst',
# The following act like consonants.
0x0A72: 'C',
0x0A73: 'C',
0x1CF5: 'C',
0x1CF6: 'C',
# TODO: The following should only be allowed after a Visarga. # For now, just treat them like regular tone marks.
0x1CE2: 'A',
0x1CE3: 'A',
0x1CE4: 'A',
0x1CE5: 'A',
0x1CE6: 'A',
0x1CE7: 'A',
0x1CE8: 'A',
# TODO: The following should only be allowed after some of # the nasalization marks, maybe only for U+1CE9..U+1CF1. # For now, just treat them like tone marks.
0x1CED: 'A',
# The following take marks in standalone clusters, similar to Avagraha.
0xA8F2: 'Symbol',
0xA8F3: 'Symbol',
0xA8F4: 'Symbol',
0xA8F5: 'Symbol',
0xA8F6: 'Symbol',
0xA8F7: 'Symbol',
0x1CE9: 'Symbol',
0x1CEA: 'Symbol',
0x1CEB: 'Symbol',
0x1CEC: 'Symbol',
0x1CEE: 'Symbol',
0x1CEF: 'Symbol',
0x1CF0: 'Symbol',
0x1CF1: 'Symbol',
# According to ScriptExtensions.txt, these Grantha marks may also be used in Tamil, # so the Indic shaper needs to know their categories.
0x11301: 'SM',
0x11302: 'SM',
0x11303: 'SM',
0x1133B: 'N',
0x1133C: 'N',
for k,new_cat in category_overrides.items():
(cat, pos, _) = indic_data.get(k, defaults)
indic_data[k] = (new_cat, pos, unicode_data[2][k])
# We only expect position for certain types
positioned_categories = ('CM', 'SM', 'RS', 'H', 'M', 'MPst') for k, (cat, pos, block) in indic_data.items(): if cat notin positioned_categories:
pos = 'END'
indic_data[k] = (cat, pos, block)
# Position overrides are more complicated
# Keep in sync with CONSONANT_FLAGS in the shaper
consonant_categories = ('C', 'CS', 'Ra','CM', 'V', 'PLACEHOLDER', 'DOTTEDCIRCLE')
matra_categories = ('M', 'MPst')
smvd_categories = ('SM', 'SMPst', 'VD', 'A', 'Symbol') for k, (cat, pos, block) in indic_data.items(): if cat in consonant_categories:
pos = 'BASE_C' elif cat in matra_categories: if block.startswith('Khmer') or block.startswith('Myanmar'):
cat = position_to_category(pos) else:
pos = indic_matra_position(k, pos, block) elif cat in smvd_categories:
pos = 'SMVD';
indic_data[k] = (cat, pos, block)
for k,new_pos in position_overrides.items():
(cat, pos, _) = indic_data.get(k, defaults)
indic_data[k] = (cat, new_pos, unicode_data[2][k])
values = [{_: 1} for _ in defaults] for vv in indic_data.values(): for i,v in enumerate(vv):
values[i][v] = values[i].get (v, 0) + 1
# Move the outliers NO-BREAK SPACE and DOTTED CIRCLE out
singles = {} for u in ALLOWED_SINGLES:
singles[u] = indic_data[u] del indic_data[u]
print ("/* == Start of generated table == */")
print ("/*")
print (" * The following table is generated by running:")
print (" *")
print (" * ./gen-indic-table.py IndicSyllabicCategory.txt IndicPositionalCategory.txt Blocks.txt")
print (" *")
print (" * on files with these headers:")
print (" *") for h in headers: for l in h:
print (" * %s" % (l.strip()))
print (" */")
print ()
print ('#include "hb.hh"')
print ()
print ('#ifndef HB_NO_OT_SHAPE')
print ()
print ('#include "hb-ot-shaper-indic.hh"')
print ()
print ('#pragma GCC diagnostic push')
print ('#pragma GCC diagnostic ignored "-Wunused-macros"')
print ()
# Print categories for shaper in categories:
print ('#include "hb-ot-shaper-%s-machine.hh"' % shaper)
print ()
done = {} for shaper, shaper_cats in categories.items():
print ('/* %s */' % shaper) for cat in shaper_cats:
v = shaper[0].upper() if cat notin done:
print ("#define OT_%s %s_Cat(%s)" % (cat, v, cat))
done[cat] = v else:
print ('static_assert (OT_%s == %s_Cat(%s), "");' % (cat, v, cat))
print ()
# Add some of the values, to make them more readable, and to avoid duplicates
for i in range (2): for v,s in short[i].items ():
all_shorts[i][s] = v
what = ["OT", "POS"]
what_short = ["_OT", "_POS"]
cat_defs = [] for i in range (2):
vv = sorted (values[i].keys ()) for v in vv:
v_no_and = v.replace ('_And_', '_') if v in short[i]:
s = short[i][v] else:
s = ''.join ([c for c in v_no_and if ord ('A') <= ord (c) <= ord ('Z')]) if s in all_shorts[i]: raise Exception ("Duplicate short value alias", v, all_shorts[i][s])
all_shorts[i][s] = v
short[i][v] = s
cat_defs.append ((what_short[i] + '_' + s, what[i] + '_' + (v.upper () if i else v), str (values[i][v]), v))
maxlen_s = max ([len (c[0]) for c in cat_defs])
maxlen_l = max ([len (c[1]) for c in cat_defs])
maxlen_n = max ([len (c[2]) for c in cat_defs]) for s in what_short:
print () for c in [c for c in cat_defs if s in c[0]]:
print ("#define %s %s /* %s chars; %s */" %
(c[0].ljust (maxlen_s), c[1].ljust (maxlen_l), c[2].rjust (maxlen_n), c[3]))
print ()
print ('#pragma GCC diagnostic pop')
print ()
print ("#define INDIC_COMBINE_CATEGORIES(S,M) ((S) | ((M) << 8))")
print ()
print ("#define _(S,M) INDIC_COMBINE_CATEGORIES (%s_##S, %s_##M)" % tuple(what_short))
print ()
print ()
total = 0
used = 0
last_block = None def print_block (block, start, end, data): global total, used, last_block if block and block != last_block:
print ()
print ()
print (" /* %s */" % block)
num = 0 assert start % 8 == 0 assert (end+1) % 8 == 0 for u in range (start, end+1): if u % 8 == 0:
print ()
print (" /* %04X */" % u, end="") if u in data:
num += 1
d = data.get (u, defaults)
print ("%9s" % ("_(%s,%s)," % (short[0][d[0]], short[1][d[1]])), end="")
total += end - start + 1
used += num if block:
last_block = block
uu = sorted (indic_data)
last = -100000
num = 0
offset = 0
starts = []
ends = []
print ("static const uint16_t indic_table[] = {") for u in uu: if u <= last: continue
block = indic_data[u][2]
start = u//8*8
end = start+1 while end in uu and block == indic_data[end][2]:
end += 1
end = (end-1)//8*8 + 7
if start != last + 1: if start - last <= 1+16*2:
print_block (None, last+1, start-1, indic_data) else: if last >= 0:
ends.append (last + 1)
offset += ends[-1] - starts[-1]
print ()
print ()
print ("#define indic_offset_0x%04xu %d" % (start, offset))
starts.append (start)
print_block (block, start, end, indic_data)
last = end
ends.append (last + 1)
offset += ends[-1] - starts[-1]
print ()
print ()
occupancy = used * 100. / total
page_bits = 12
print ("}; /* Table items: %d; occupancy: %d%% */" % (offset, occupancy))
print ()
print ("uint16_t")
print ("hb_indic_get_categories (hb_codepoint_t u)")
print ("{")
print (" switch (u >> %d)" % page_bits)
print (" {")
pages = set ([u>>page_bits for u in starts+ends+list (singles.keys ())]) for p in sorted(pages):
print (" case 0x%0Xu:" % p) for u,d in singles.items (): if p != u>>page_bits: continue
print (" if (unlikely (u == 0x%04Xu)) return _(%s,%s);" % (u, short[0][d[0]], short[1][d[1]])) for (start,end) in zip (starts, ends): if p notin [start>>page_bits, end>>page_bits]: continue
offset = "indic_offset_0x%04xu" % start
print (" if (hb_in_range (u, 0x%04Xu, 0x%04Xu)) return indic_table[u - 0x%04Xu + %s];" % (start, end-1, start, offset))
print (" break;")
print ("")
print (" default:")
print (" break;")
print (" }")
print (" return _(X,X);")
print ("}")
print ()
print ("#undef _")
print ("#undef INDIC_COMBINE_CATEGORIES") for i in range (2):
print ()
vv = sorted (values[i].keys ()) for v in vv:
print ("#undef %s_%s" %
(what_short[i], short[i][v]))
print ()
print ('#endif')
print ()
print ("/* == End of generated table == */")
# Maintain at least 50% occupancy in the table */ if occupancy < 50: raise Exception ("Table too sparse, please investigate: ", occupancy)
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