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-rwxr-xr-xgfx/harfbuzz/src/gen-use-table.py507
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diff --git a/gfx/harfbuzz/src/gen-use-table.py b/gfx/harfbuzz/src/gen-use-table.py
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+#!/usr/bin/env python3
+# flake8: noqa: F821
+
+import logging
+logging.basicConfig(format='%(levelname)s: %(message)s', level=logging.INFO)
+
+"""usage: ./gen-use-table.py IndicSyllabicCategory.txt IndicPositionalCategory.txt ArabicShaping.txt DerivedCoreProperties.txt UnicodeData.txt Blocks.txt Scripts.txt IndicSyllabicCategory-Additional.txt IndicPositionalCategory-Additional.txt
+
+Input files:
+* https://unicode.org/Public/UCD/latest/ucd/IndicSyllabicCategory.txt
+* https://unicode.org/Public/UCD/latest/ucd/IndicPositionalCategory.txt
+* https://unicode.org/Public/UCD/latest/ucd/ArabicShaping.txt
+* https://unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt
+* https://unicode.org/Public/UCD/latest/ucd/UnicodeData.txt
+* https://unicode.org/Public/UCD/latest/ucd/Blocks.txt
+* https://unicode.org/Public/UCD/latest/ucd/Scripts.txt
+* ms-use/IndicSyllabicCategory-Additional.txt
+* ms-use/IndicPositionalCategory-Additional.txt
+"""
+
+import sys
+
+if len (sys.argv) != 10:
+ sys.exit (__doc__)
+
+DISABLED_SCRIPTS = {
+ 'Arabic',
+ 'Lao',
+ 'Samaritan',
+ 'Syriac',
+ 'Thai',
+}
+
+files = [open (x, encoding='utf-8') for x in sys.argv[1:]]
+
+headers = [[f.readline () for i in range (2)] for j,f in enumerate(files) if j != 4]
+for j in range(7, 9):
+ for line in files[j]:
+ line = line.rstrip()
+ if not line:
+ break
+ headers[j - 1].append(line)
+headers.append (["UnicodeData.txt does not have a header."])
+
+unicode_data = [{} for _ in files]
+values = [{} 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 if i not in [2, 4] else 2]
+
+ if i == 2:
+ t = 'jt_' + t
+ elif i == 3 and t != 'Default_Ignorable_Code_Point':
+ continue
+ elif i == 7 and t == 'Consonant_Final_Modifier':
+ # TODO: https://github.com/MicrosoftDocs/typography-issues/issues/336
+ t = 'Syllable_Modifier'
+ elif i == 8 and t == 'NA':
+ t = 'Not_Applicable'
+
+ i0 = i if i < 7 else i - 7
+ for u in range (start, end + 1):
+ unicode_data[i0][u] = t
+ values[i0][t] = values[i0].get (t, 0) + end - start + 1
+
+defaults = ('Other', 'Not_Applicable', 'jt_X', '', 'Cn', 'No_Block', 'Unknown')
+
+# Merge data into one dict:
+for i,v in enumerate (defaults):
+ values[i][v] = values[i].get (v, 0) + 1
+combined = {}
+for i,d in enumerate (unicode_data):
+ for u,v in d.items ():
+ if not u in combined:
+ if i >= 4:
+ continue
+ combined[u] = list (defaults)
+ combined[u][i] = v
+combined = {k: v for k, v in combined.items() if v[6] not in DISABLED_SCRIPTS}
+
+
+property_names = [
+ # General_Category
+ 'Cc', 'Cf', 'Cn', 'Co', 'Cs', 'Ll', 'Lm', 'Lo', 'Lt', 'Lu', 'Mc',
+ 'Me', 'Mn', 'Nd', 'Nl', 'No', 'Pc', 'Pd', 'Pe', 'Pf', 'Pi', 'Po',
+ 'Ps', 'Sc', 'Sk', 'Sm', 'So', 'Zl', 'Zp', 'Zs',
+ # Indic_Syllabic_Category
+ 'Other',
+ 'Bindu',
+ 'Visarga',
+ 'Avagraha',
+ 'Nukta',
+ 'Virama',
+ 'Pure_Killer',
+ 'Invisible_Stacker',
+ 'Vowel_Independent',
+ 'Vowel_Dependent',
+ 'Vowel',
+ 'Consonant_Placeholder',
+ 'Consonant',
+ 'Consonant_Dead',
+ 'Consonant_With_Stacker',
+ 'Consonant_Prefixed',
+ 'Consonant_Preceding_Repha',
+ 'Consonant_Succeeding_Repha',
+ 'Consonant_Subjoined',
+ 'Consonant_Medial',
+ 'Consonant_Final',
+ 'Consonant_Head_Letter',
+ 'Consonant_Initial_Postfixed',
+ 'Modifying_Letter',
+ 'Tone_Letter',
+ 'Tone_Mark',
+ 'Gemination_Mark',
+ 'Cantillation_Mark',
+ 'Register_Shifter',
+ 'Syllable_Modifier',
+ 'Consonant_Killer',
+ 'Non_Joiner',
+ 'Joiner',
+ 'Number_Joiner',
+ 'Number',
+ 'Brahmi_Joining_Number',
+ 'Symbol_Modifier',
+ 'Hieroglyph',
+ 'Hieroglyph_Joiner',
+ 'Hieroglyph_Segment_Begin',
+ 'Hieroglyph_Segment_End',
+ # Indic_Positional_Category
+ 'Not_Applicable',
+ 'Right',
+ 'Left',
+ 'Visual_Order_Left',
+ 'Left_And_Right',
+ 'Top',
+ 'Bottom',
+ 'Top_And_Bottom',
+ 'Top_And_Bottom_And_Left',
+ 'Top_And_Right',
+ 'Top_And_Left',
+ 'Top_And_Left_And_Right',
+ 'Bottom_And_Left',
+ 'Bottom_And_Right',
+ 'Top_And_Bottom_And_Right',
+ 'Overstruck',
+ # Joining_Type
+ 'jt_C',
+ 'jt_D',
+ 'jt_L',
+ 'jt_R',
+ 'jt_T',
+ 'jt_U',
+ 'jt_X',
+]
+
+class PropertyValue(object):
+ def __init__(self, name_):
+ self.name = name_
+ def __str__(self):
+ return self.name
+ def __eq__(self, other):
+ return self.name == (other if isinstance(other, str) else other.name)
+ def __ne__(self, other):
+ return not (self == other)
+ def __hash__(self):
+ return hash(str(self))
+
+property_values = {}
+
+for name in property_names:
+ value = PropertyValue(name)
+ assert value not in property_values
+ assert value not in globals()
+ property_values[name] = value
+globals().update(property_values)
+
+
+def is_BASE(U, UISC, UDI, UGC, AJT):
+ return (UISC in [Number, Consonant, Consonant_Head_Letter,
+ Tone_Letter,
+ Vowel_Independent,
+ ] or
+ # TODO: https://github.com/MicrosoftDocs/typography-issues/issues/484
+ AJT in [jt_C, jt_D, jt_L, jt_R] and UISC != Joiner or
+ (UGC == Lo and UISC in [Avagraha, Bindu, Consonant_Final, Consonant_Medial,
+ Consonant_Subjoined, Vowel, Vowel_Dependent]))
+def is_BASE_NUM(U, UISC, UDI, UGC, AJT):
+ return UISC == Brahmi_Joining_Number
+def is_BASE_OTHER(U, UISC, UDI, UGC, AJT):
+ if UISC == Consonant_Placeholder: return True
+ return U in [0x2015, 0x2022, 0x25FB, 0x25FC, 0x25FD, 0x25FE]
+def is_CGJ(U, UISC, UDI, UGC, AJT):
+ # Also includes VARIATION_SELECTOR and ZWJ
+ return UISC == Joiner or UDI and UGC in [Mc, Me, Mn]
+def is_CONS_FINAL(U, UISC, UDI, UGC, AJT):
+ return ((UISC == Consonant_Final and UGC != Lo) or
+ UISC == Consonant_Succeeding_Repha)
+def is_CONS_FINAL_MOD(U, UISC, UDI, UGC, AJT):
+ return UISC == Syllable_Modifier
+def is_CONS_MED(U, UISC, UDI, UGC, AJT):
+ # Consonant_Initial_Postfixed is new in Unicode 11; not in the spec.
+ return (UISC == Consonant_Medial and UGC != Lo or
+ UISC == Consonant_Initial_Postfixed)
+def is_CONS_MOD(U, UISC, UDI, UGC, AJT):
+ return UISC in [Nukta, Gemination_Mark, Consonant_Killer]
+def is_CONS_SUB(U, UISC, UDI, UGC, AJT):
+ return UISC == Consonant_Subjoined and UGC != Lo
+def is_CONS_WITH_STACKER(U, UISC, UDI, UGC, AJT):
+ return UISC == Consonant_With_Stacker
+def is_HALANT(U, UISC, UDI, UGC, AJT):
+ return UISC == Virama and not is_HALANT_OR_VOWEL_MODIFIER(U, UISC, UDI, UGC, AJT)
+def is_HALANT_OR_VOWEL_MODIFIER(U, UISC, UDI, UGC, AJT):
+ # Split off of HALANT
+ return U == 0x0DCA
+def is_HALANT_NUM(U, UISC, UDI, UGC, AJT):
+ return UISC == Number_Joiner
+def is_HIEROGLYPH(U, UISC, UDI, UGC, AJT):
+ return UISC == Hieroglyph
+def is_HIEROGLYPH_JOINER(U, UISC, UDI, UGC, AJT):
+ return UISC == Hieroglyph_Joiner
+def is_HIEROGLYPH_SEGMENT_BEGIN(U, UISC, UDI, UGC, AJT):
+ return UISC == Hieroglyph_Segment_Begin
+def is_HIEROGLYPH_SEGMENT_END(U, UISC, UDI, UGC, AJT):
+ return UISC == Hieroglyph_Segment_End
+def is_INVISIBLE_STACKER(U, UISC, UDI, UGC, AJT):
+ # Split off of HALANT
+ return (UISC == Invisible_Stacker
+ and not is_SAKOT(U, UISC, UDI, UGC, AJT)
+ )
+def is_ZWNJ(U, UISC, UDI, UGC, AJT):
+ return UISC == Non_Joiner
+def is_OTHER(U, UISC, UDI, UGC, AJT):
+ # Also includes BASE_IND and SYM
+ return ((UGC == Po or UISC in [Consonant_Dead, Joiner, Modifying_Letter, Other])
+ and not is_BASE(U, UISC, UDI, UGC, AJT)
+ and not is_BASE_OTHER(U, UISC, UDI, UGC, AJT)
+ and not is_CGJ(U, UISC, UDI, UGC, AJT)
+ and not is_SYM_MOD(U, UISC, UDI, UGC, AJT)
+ and not is_Word_Joiner(U, UISC, UDI, UGC, AJT)
+ )
+def is_REPHA(U, UISC, UDI, UGC, AJT):
+ return UISC in [Consonant_Preceding_Repha, Consonant_Prefixed]
+def is_SAKOT(U, UISC, UDI, UGC, AJT):
+ # Split off of HALANT
+ return U == 0x1A60
+def is_SYM_MOD(U, UISC, UDI, UGC, AJT):
+ return UISC == Symbol_Modifier
+def is_VOWEL(U, UISC, UDI, UGC, AJT):
+ return (UISC == Pure_Killer or
+ UGC != Lo and UISC in [Vowel, Vowel_Dependent])
+def is_VOWEL_MOD(U, UISC, UDI, UGC, AJT):
+ return (UISC in [Tone_Mark, Cantillation_Mark, Register_Shifter, Visarga] or
+ UGC != Lo and UISC == Bindu)
+def is_Word_Joiner(U, UISC, UDI, UGC, AJT):
+ # Also includes Rsv
+ return (UDI and U not in [0x115F, 0x1160, 0x3164, 0xFFA0, 0x1BCA0, 0x1BCA1, 0x1BCA2, 0x1BCA3]
+ and UISC == Other
+ and not is_CGJ(U, UISC, UDI, UGC, AJT)
+ ) or UGC == Cn
+
+use_mapping = {
+ 'B': is_BASE,
+ 'N': is_BASE_NUM,
+ 'GB': is_BASE_OTHER,
+ 'CGJ': is_CGJ,
+ 'F': is_CONS_FINAL,
+ 'FM': is_CONS_FINAL_MOD,
+ 'M': is_CONS_MED,
+ 'CM': is_CONS_MOD,
+ 'SUB': is_CONS_SUB,
+ 'CS': is_CONS_WITH_STACKER,
+ 'H': is_HALANT,
+ 'HVM': is_HALANT_OR_VOWEL_MODIFIER,
+ 'HN': is_HALANT_NUM,
+ 'IS': is_INVISIBLE_STACKER,
+ 'G': is_HIEROGLYPH,
+ 'J': is_HIEROGLYPH_JOINER,
+ 'SB': is_HIEROGLYPH_SEGMENT_BEGIN,
+ 'SE': is_HIEROGLYPH_SEGMENT_END,
+ 'ZWNJ': is_ZWNJ,
+ 'O': is_OTHER,
+ 'R': is_REPHA,
+ 'Sk': is_SAKOT,
+ 'SM': is_SYM_MOD,
+ 'V': is_VOWEL,
+ 'VM': is_VOWEL_MOD,
+ 'WJ': is_Word_Joiner,
+}
+
+use_positions = {
+ 'F': {
+ 'Abv': [Top],
+ 'Blw': [Bottom],
+ 'Pst': [Right],
+ },
+ 'M': {
+ 'Abv': [Top],
+ 'Blw': [Bottom, Bottom_And_Left, Bottom_And_Right],
+ 'Pst': [Right],
+ 'Pre': [Left, Top_And_Bottom_And_Left],
+ },
+ 'CM': {
+ 'Abv': [Top],
+ 'Blw': [Bottom, Overstruck],
+ },
+ 'V': {
+ 'Abv': [Top, Top_And_Bottom, Top_And_Bottom_And_Right, Top_And_Right],
+ 'Blw': [Bottom, Overstruck, Bottom_And_Right],
+ 'Pst': [Right],
+ 'Pre': [Left, Top_And_Left, Top_And_Left_And_Right, Left_And_Right],
+ },
+ 'VM': {
+ 'Abv': [Top],
+ 'Blw': [Bottom, Overstruck],
+ 'Pst': [Right],
+ 'Pre': [Left],
+ },
+ 'SM': {
+ 'Abv': [Top],
+ 'Blw': [Bottom],
+ },
+ 'H': None,
+ 'HVM': None,
+ 'IS': None,
+ 'B': None,
+ 'FM': {
+ 'Abv': [Top],
+ 'Blw': [Bottom],
+ 'Pst': [Not_Applicable],
+ },
+ 'R': None,
+ 'SUB': None,
+}
+
+def map_to_use(data):
+ out = {}
+ items = use_mapping.items()
+ for U, (UISC, UIPC, AJT, UDI, UGC, UBlock, _) in data.items():
+
+ # Resolve Indic_Syllabic_Category
+
+ # TODO: These don't have UISC assigned in Unicode 13.0.0, but have UIPC
+ if 0x1CE2 <= U <= 0x1CE8: UISC = Cantillation_Mark
+
+ # Tibetan:
+ # TODO: These don't have UISC assigned in Unicode 13.0.0, but have UIPC
+ if 0x0F18 <= U <= 0x0F19 or 0x0F3E <= U <= 0x0F3F: UISC = Vowel_Dependent
+
+ # TODO: U+1CED should only be allowed after some of
+ # the nasalization marks, maybe only for U+1CE9..U+1CF1.
+ if U == 0x1CED: UISC = Tone_Mark
+
+ values = [k for k,v in items if v(U, UISC, UDI, UGC, AJT)]
+ assert len(values) == 1, "%s %s %s %s %s %s" % (hex(U), UISC, UDI, UGC, AJT, values)
+ USE = values[0]
+
+ # Resolve Indic_Positional_Category
+
+ # TODO: https://github.com/harfbuzz/harfbuzz/pull/1037
+ # and https://github.com/harfbuzz/harfbuzz/issues/1631
+ if U in [0x11302, 0x11303, 0x114C1]: UIPC = Top
+
+ assert (UIPC in [Not_Applicable, Visual_Order_Left] or U == 0x0F7F or
+ USE in use_positions), "%s %s %s %s %s %s %s" % (hex(U), UIPC, USE, UISC, UDI, UGC, AJT)
+
+ pos_mapping = use_positions.get(USE, None)
+ if pos_mapping:
+ values = [k for k,v in pos_mapping.items() if v and UIPC in v]
+ assert len(values) == 1, "%s %s %s %s %s %s %s %s" % (hex(U), UIPC, USE, UISC, UDI, UGC, AJT, values)
+ USE = USE + values[0]
+
+ out[U] = (USE, UBlock)
+ return out
+
+use_data = map_to_use(combined)
+
+print ("/* == Start of generated table == */")
+print ("/*")
+print (" * The following table is generated by running:")
+print (" *")
+print (" * {} IndicSyllabicCategory.txt IndicPositionalCategory.txt ArabicShaping.txt DerivedCoreProperties.txt UnicodeData.txt Blocks.txt Scripts.txt IndicSyllabicCategory-Additional.txt IndicPositionalCategory-Additional.txt".format (sys.argv[0]))
+print (" *")
+print (" * on files with these headers:")
+print (" *")
+for h in headers:
+ for l in h:
+ print (" * %s" % (l.strip()))
+print (" */")
+print ()
+print ("#ifndef HB_OT_SHAPER_USE_TABLE_HH")
+print ("#define HB_OT_SHAPER_USE_TABLE_HH")
+print ()
+print ('#include "hb.hh"')
+print ()
+print ('#include "hb-ot-shaper-use-machine.hh"')
+print ()
+
+total = 0
+used = 0
+last_block = None
+def print_block (block, start, end, use_data):
+ global total, used, last_block
+ if block and block != last_block:
+ print ()
+ print ()
+ print (" /* %s */" % block)
+ if start % 16:
+ print (' ' * (20 + (start % 16 * 6)), end='')
+ num = 0
+ assert start % 8 == 0
+ assert (end+1) % 8 == 0
+ for u in range (start, end+1):
+ if u % 16 == 0:
+ print ()
+ print (" /* %04X */" % u, end='')
+ if u in use_data:
+ num += 1
+ d = use_data.get (u)
+ if d is not None:
+ d = d[0]
+ elif u in unicode_data[4]:
+ d = 'O'
+ else:
+ d = 'WJ'
+ print ("%6s," % d, end='')
+
+ total += end - start + 1
+ used += num
+ if block:
+ last_block = block
+
+uu = sorted (use_data.keys ())
+
+last = -100000
+num = 0
+offset = 0
+starts = []
+ends = []
+print ('#pragma GCC diagnostic push')
+print ('#pragma GCC diagnostic ignored "-Wunused-macros"')
+for k,v in sorted(use_mapping.items()):
+ if k in use_positions and use_positions[k]: continue
+ print ("#define %s USE(%s) /* %s */" % (k, k, v.__name__[3:]))
+for k,v in sorted(use_positions.items()):
+ if not v: continue
+ for suf in v.keys():
+ tag = k + suf
+ print ("#define %s USE(%s)" % (tag, tag))
+print ('#pragma GCC diagnostic pop')
+print ("")
+
+
+import packTab
+data = {u:v[0] for u,v in use_data.items()}
+
+DEFAULT = 5
+COMPACT = 9
+for compression in (DEFAULT, COMPACT):
+
+ logging.info(' Compression=%d:' % compression)
+ print()
+ if compression == DEFAULT:
+ print('#ifndef HB_OPTIMIZE_SIZE')
+ elif compression == COMPACT:
+ print('#else')
+ else:
+ assert False
+ print()
+
+ code = packTab.Code('hb_use')
+ sol = packTab.pack_table(data, compression=compression, default='O')
+ logging.info(' FullCost=%d' % (sol.fullCost))
+ sol.genCode(code, f'get_category')
+ code.print_c(linkage='static inline')
+ print ()
+
+print('#endif')
+
+print ()
+for k in sorted(use_mapping.keys()):
+ if k in use_positions and use_positions[k]: continue
+ print ("#undef %s" % k)
+for k,v in sorted(use_positions.items()):
+ if not v: continue
+ for suf in v.keys():
+ tag = k + suf
+ print ("#undef %s" % tag)
+print ()
+print ()
+print ("#endif /* HB_OT_SHAPER_USE_TABLE_HH */")
+print ("/* == End of generated table == */")