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makeunicodedata.py
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makeunicodedata.py
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#
# (re)generate unicode property and type databases
#
# This script converts Unicode database files to Modules/unicodedata_db.h,
# Modules/unicodename_db.h, and Objects/unicodetype_db.h
#
# history:
# 2000-09-24 fl created (based on bits and pieces from unidb)
# 2000-09-25 fl merged tim's splitbin fixes, separate decomposition table
# 2000-09-25 fl added character type table
# 2000-09-26 fl added LINEBREAK, DECIMAL, and DIGIT flags/fields (2.0)
# 2000-11-03 fl expand first/last ranges
# 2001-01-19 fl added character name tables (2.1)
# 2001-01-21 fl added decomp compression; dynamic phrasebook threshold
# 2002-09-11 wd use string methods
# 2002-10-18 mvl update to Unicode 3.2
# 2002-10-22 mvl generate NFC tables
# 2002-11-24 mvl expand all ranges, sort names version-independently
# 2002-11-25 mvl add UNIDATA_VERSION
# 2004-05-29 perky add east asian width information
# 2006-03-10 mvl update to Unicode 4.1; add UCD 3.2 delta
# 2008-06-11 gb add PRINTABLE_MASK for Atsuo Ishimoto's ascii() patch
# 2011-10-21 ezio add support for name aliases and named sequences
# 2012-01 benjamin add full case mappings
# 2019 iwsfutcmd added support for additional properties
# 2020 iwsfutcmd more additional properties
# 2024 iwsfutcmd differentiated 'G' and 'T' total stroke counts
#
# written by Fredrik Lundh ([email protected])
#
import dataclasses
import os
import sys
import zipfile
import re
from functools import partial
from textwrap import dedent
from typing import Iterator, List, Optional, Set, Tuple
from pathlib import Path
SCRIPT = sys.argv[0]
VERSION = "3.7"
# The Unicode Database
# --------------------
# When changing UCD version please update
# * Doc/library/stdtypes.rst, and
# * Doc/library/unicodedata.rst
# * Doc/reference/lexical_analysis.rst (two occurrences)
UNIDATA_VERSION = "16.0.0"
UNICODE_DATA = "UnicodeData%s.txt"
COMPOSITION_EXCLUSIONS = "CompositionExclusions%s.txt"
EASTASIAN_WIDTH = "EastAsianWidth%s.txt"
UNIHAN = "Unihan%s.zip"
DERIVED_CORE_PROPERTIES = "DerivedCoreProperties%s.txt"
DERIVEDNORMALIZATION_PROPS = "DerivedNormalizationProps%s.txt"
LINE_BREAK = "LineBreak%s.txt"
PROPERTY_VALUE_ALIASES = "PropertyValueAliases%s.txt"
NAME_ALIASES = "NameAliases%s.txt"
NAMED_SEQUENCES = "NamedSequences%s.txt"
SPECIAL_CASING = "SpecialCasing%s.txt"
CASE_FOLDING = "CaseFolding%s.txt"
SCRIPTS = "Scripts%s.txt"
BLOCKS = "Blocks%s.txt"
SCRIPT_EXTENSIONS = "ScriptExtensions%s.txt"
INDIC_POSITIONAL_CATEGORY = "IndicPositionalCategory%s.txt"
INDIC_SYLLABIC_CATEGORY = "IndicSyllabicCategory%s.txt"
GRAPHEME_BREAK_PROPERTY = "auxiliary/GraphemeBreakProperty%s.txt"
VERTICAL_ORIENTATION_PROPERTY = "VerticalOrientation%s.txt"
AGE_PROPERTY = "DerivedAge%s.txt"
EMOJI_DATA = "emoji/emoji-data%s.txt"
# Private Use Areas -- in planes 1, 15, 16
PUA_1 = range(0xE000, 0xF900)
PUA_15 = range(0xF0000, 0xFFFFE)
PUA_16 = range(0x100000, 0x10FFFE)
# we use this ranges of PUA_15 to store name aliases and named sequences
NAME_ALIASES_START = 0xF0000
NAMED_SEQUENCES_START = 0xF0200
old_versions = ["3.2.0"]
CATEGORY_NAMES = [ "Cn", "Lu", "Ll", "Lt", "Mn", "Mc", "Me", "Nd",
"Nl", "No", "Zs", "Zl", "Zp", "Cc", "Cf", "Cs", "Co", "Cn", "Lm",
"Lo", "Pc", "Pd", "Ps", "Pe", "Pi", "Pf", "Po", "Sm", "Sc", "Sk",
"So" ]
BIDIRECTIONAL_NAMES = [ "", "L", "LRE", "LRO", "R", "AL", "RLE", "RLO",
"PDF", "EN", "ES", "ET", "AN", "CS", "NSM", "BN", "B", "S", "WS",
"ON", "LRI", "RLI", "FSI", "PDI" ]
# "N" needs to be the first entry, see the comment in makeunicodedata
EASTASIANWIDTH_NAMES = [ "N", "H", "W", "Na", "A", "F" ]
MANDATORY_LINE_BREAKS = [ "BK", "CR", "LF", "NL" ]
# note: should match definitions in Objects/unicodectype.c
ALPHA_MASK = 0x01
DECIMAL_MASK = 0x02
DIGIT_MASK = 0x04
LOWER_MASK = 0x08
LINEBREAK_MASK = 0x10
SPACE_MASK = 0x20
TITLE_MASK = 0x40
UPPER_MASK = 0x80
XID_START_MASK = 0x100
XID_CONTINUE_MASK = 0x200
PRINTABLE_MASK = 0x400
NUMERIC_MASK = 0x800
CASE_IGNORABLE_MASK = 0x1000
CASED_MASK = 0x2000
EXTENDED_CASE_MASK = 0x4000
# these ranges need to match unicodedata.c:is_unified_ideograph
cjk_ranges = [
('3400', '4DBF'), # CJK Ideograph Extension A CJK
('4E00', '9FFF'), # CJK Ideograph
('20000', '2A6DF'), # CJK Ideograph Extension B
('2A700', '2B739'), # CJK Ideograph Extension C
('2B740', '2B81D'), # CJK Ideograph Extension D
('2B820', '2CEA1'), # CJK Ideograph Extension E
('2CEB0', '2EBE0'), # CJK Ideograph Extension F
('2EBF0', '2EE5D'), # CJK Ideograph Extension I
('30000', '3134A'), # CJK Ideograph Extension G
('31350', '323AF'), # CJK Ideograph Extension H
]
def maketables(trace=0):
print("--- Reading", UNICODE_DATA % "", "...")
unicode = UnicodeData(UNIDATA_VERSION)
print(len(list(filter(None, unicode.table))), "characters")
for version in old_versions:
print("--- Reading", UNICODE_DATA % ("-"+version), "...")
old_unicode = UnicodeData(version, cjk_check=False)
print(len(list(filter(None, old_unicode.table))), "characters")
merge_old_version(version, unicode, old_unicode)
makeunicodename(unicode, trace)
makeunicodedata(unicode, trace)
makeunicodetype(unicode, trace)
makeunicodeprop(unicode, trace)
makeunicodeunihan(unicode, trace)
# --------------------------------------------------------------------
# unicode character properties
def makeunicodedata(unicode, trace):
# the default value of east_asian_width is "N", for unassigned code points
# not mentioned in EastAsianWidth.txt
# in addition there are some reserved but unassigned code points in CJK
# ranges that are classified as "W". code points in private use areas
# have a width of "A". both of these have entries in
# EastAsianWidth.txt
# see https://unicode.org/reports/tr11/#Unassigned
assert EASTASIANWIDTH_NAMES[0] == "N"
dummy = (0, 0, 0, 0, 0, 0)
table = [dummy]
cache = {0: dummy}
index = [0] * len(unicode.chars)
FILE = "unicodedataplus/unicodedata_db.h"
print("--- Preparing", FILE, "...")
# 1) database properties
for char in unicode.chars:
record = unicode.table[char]
if record:
# extract database properties
category = CATEGORY_NAMES.index(record.general_category)
combining = int(record.canonical_combining_class)
bidirectional = BIDIRECTIONAL_NAMES.index(record.bidi_class)
mirrored = record.bidi_mirrored == "Y"
eastasianwidth = EASTASIANWIDTH_NAMES.index(record.east_asian_width)
normalizationquickcheck = record.quick_check
item = (
category, combining, bidirectional, mirrored, eastasianwidth,
normalizationquickcheck
)
elif unicode.widths[char] is not None:
# an unassigned but reserved character, with a known
# east_asian_width
eastasianwidth = EASTASIANWIDTH_NAMES.index(unicode.widths[char])
item = (0, 0, 0, 0, eastasianwidth, 0)
else:
continue
# add entry to index and item tables
i = cache.get(item)
if i is None:
cache[item] = i = len(table)
table.append(item)
index[char] = i
# 2) decomposition data
decomp_data_cache = {}
decomp_data = [0]
decomp_prefix = [""]
decomp_index = [0] * len(unicode.chars)
decomp_size = 0
comp_pairs = []
comp_first = [None] * len(unicode.chars)
comp_last = [None] * len(unicode.chars)
for char in unicode.chars:
record = unicode.table[char]
if record:
if record.decomposition_type:
decomp = record.decomposition_type.split()
if len(decomp) > 19:
raise Exception("character %x has a decomposition too large for nfd_nfkd" % char)
# prefix
if decomp[0][0] == "<":
prefix = decomp.pop(0)
else:
prefix = ""
try:
i = decomp_prefix.index(prefix)
except ValueError:
i = len(decomp_prefix)
decomp_prefix.append(prefix)
prefix = i
assert prefix < 256
# content
decomp = [prefix + (len(decomp)<<8)] + [int(s, 16) for s in decomp]
# Collect NFC pairs
if not prefix and len(decomp) == 3 and \
char not in unicode.exclusions and \
unicode.table[decomp[1]].canonical_combining_class == "0":
p, l, r = decomp
comp_first[l] = 1
comp_last[r] = 1
comp_pairs.append((l,r,char))
key = tuple(decomp)
i = decomp_data_cache.get(key, -1)
if i == -1:
i = len(decomp_data)
decomp_data.extend(decomp)
decomp_size = decomp_size + len(decomp) * 2
decomp_data_cache[key] = i
else:
assert decomp_data[i:i+len(decomp)] == decomp
else:
i = 0
decomp_index[char] = i
f = l = 0
comp_first_ranges = []
comp_last_ranges = []
prev_f = prev_l = None
for i in unicode.chars:
if comp_first[i] is not None:
comp_first[i] = f
f += 1
if prev_f is None:
prev_f = (i,i)
elif prev_f[1]+1 == i:
prev_f = prev_f[0],i
else:
comp_first_ranges.append(prev_f)
prev_f = (i,i)
if comp_last[i] is not None:
comp_last[i] = l
l += 1
if prev_l is None:
prev_l = (i,i)
elif prev_l[1]+1 == i:
prev_l = prev_l[0],i
else:
comp_last_ranges.append(prev_l)
prev_l = (i,i)
comp_first_ranges.append(prev_f)
comp_last_ranges.append(prev_l)
total_first = f
total_last = l
comp_data = [0]*(total_first*total_last)
for f,l,char in comp_pairs:
f = comp_first[f]
l = comp_last[l]
comp_data[f*total_last+l] = char
print(len(table), "unique properties")
print(len(decomp_prefix), "unique decomposition prefixes")
print(len(decomp_data), "unique decomposition entries:", end=' ')
print(decomp_size, "bytes")
print(total_first, "first characters in NFC")
print(total_last, "last characters in NFC")
print(len(comp_pairs), "NFC pairs")
print("--- Writing", FILE, "...")
with open(FILE, "w") as fp:
fprint = partial(print, file=fp)
fprint("/* this file was generated by %s %s */" % (SCRIPT, VERSION))
fprint()
fprint('#define UNIDATA_VERSION "%s"' % UNIDATA_VERSION)
fprint("/* a list of unique database records */")
fprint("const _PyUnicodePlus_DatabaseRecord _PyUnicodePlus_Database_Records[] = {")
for item in table:
fprint(" {%d, %d, %d, %d, %d, %d}," % item)
fprint("};")
fprint()
fprint("/* Reindexing of NFC first characters. */")
fprint("#define TOTAL_FIRST",total_first)
fprint("#define TOTAL_LAST",total_last)
fprint("struct reindex{int start;short count,index;};")
fprint("static struct reindex nfc_first[] = {")
for start,end in comp_first_ranges:
fprint(" { %d, %d, %d}," % (start,end-start,comp_first[start]))
fprint(" {0,0,0}")
fprint("};\n")
fprint("static struct reindex nfc_last[] = {")
for start,end in comp_last_ranges:
fprint(" { %d, %d, %d}," % (start,end-start,comp_last[start]))
fprint(" {0,0,0}")
fprint("};\n")
# FIXME: <fl> the following tables could be made static, and
# the support code moved into unicodedatabase.c
fprint("/* string literals */")
fprint("const char *_PyUnicodePlus_CategoryNames[] = {")
for name in CATEGORY_NAMES:
fprint(" \"%s\"," % name)
fprint(" NULL")
fprint("};")
fprint("const char *_PyUnicodePlus_BidirectionalNames[] = {")
for name in BIDIRECTIONAL_NAMES:
fprint(" \"%s\"," % name)
fprint(" NULL")
fprint("};")
fprint("const char *_PyUnicodePlus_EastAsianWidthNames[] = {")
for name in EASTASIANWIDTH_NAMES:
fprint(" \"%s\"," % name)
fprint(" NULL")
fprint("};")
fprint(dedent("""
typedef struct {
char *prop_ourname;
char *value_shortname;
char *value_alias;
} _PyUnicodePlus_PropertyValueAlias;
"""))
fprint("const _PyUnicodePlus_PropertyValueAlias _PyUnicodePlus_PropertyValueAliases[] = {")
for prop_shortname, prop_ourname in [
('bc', 'bidirectional'),
('gc', 'category'),
('ea', 'east_asian_width'),
('sc', 'script'),
('blk', 'block')]:
aliases_dict = unicode.property_value_aliases[prop_shortname]
for value_shortname, aliases in aliases_dict.items():
if prop_shortname in ('sc', 'blk'):
key = aliases[0]
fprint(' {"%s", "%s", "%s"},'
% (prop_ourname, key, value_shortname))
for alias in aliases[1:]:
fprint(' {"%s", "%s", "%s"},'
% (prop_ourname, key, alias))
else:
for alias in aliases:
fprint(' {"%s", "%s", "%s"},'
% (prop_ourname, value_shortname, alias))
fprint(" {NULL, NULL, NULL}")
fprint("};\n")
fprint("static const char *decomp_prefix[] = {")
for name in decomp_prefix:
fprint(" \"%s\"," % name)
fprint(" NULL")
fprint("};")
# split record index table
index1, index2, shift = splitbins(index, trace)
fprint("/* index tables for the database records */")
fprint("#define SHIFT", shift)
Array("index1", index1).dump(fp, trace)
Array("index2", index2).dump(fp, trace)
# split decomposition index table
index1, index2, shift = splitbins(decomp_index, trace)
fprint("/* decomposition data */")
Array("decomp_data", decomp_data).dump(fp, trace)
fprint("/* index tables for the decomposition data */")
fprint("#define DECOMP_SHIFT", shift)
Array("decomp_index1", index1).dump(fp, trace)
Array("decomp_index2", index2).dump(fp, trace)
index, index2, shift = splitbins(comp_data, trace)
fprint("/* NFC pairs */")
fprint("#define COMP_SHIFT", shift)
Array("comp_index", index).dump(fp, trace)
Array("comp_data", index2).dump(fp, trace)
# Generate delta tables for old versions
for version, table, normalization in unicode.changed:
cversion = version.replace(".","_")
records = [table[0]]
cache = {table[0]:0}
index = [0] * len(table)
for i, record in enumerate(table):
try:
index[i] = cache[record]
except KeyError:
index[i] = cache[record] = len(records)
records.append(record)
index1, index2, shift = splitbins(index, trace)
fprint("static const change_record change_records_%s[] = {" % cversion)
for record in records:
fprint(" { %s }," % ", ".join(map(str,record)))
fprint("};")
Array("changes_%s_index" % cversion, index1).dump(fp, trace)
Array("changes_%s_data" % cversion, index2).dump(fp, trace)
fprint("static const change_record* get_change_%s(Py_UCS4 n)" % cversion)
fprint("{")
fprint(" int index;")
fprint(" if (n >= 0x110000) index = 0;")
fprint(" else {")
fprint(" index = changes_%s_index[n>>%d];" % (cversion, shift))
fprint(" index = changes_%s_data[(index<<%d)+(n & %d)];" % \
(cversion, shift, ((1<<shift)-1)))
fprint(" }")
fprint(" return change_records_%s+index;" % cversion)
fprint("}\n")
fprint("static Py_UCS4 normalization_%s(Py_UCS4 n)" % cversion)
fprint("{")
fprint(" switch(n) {")
for k, v in normalization:
fprint(" case %s: return 0x%s;" % (hex(k), v))
fprint(" default: return 0;")
fprint(" }\n}\n")
# --------------------------------------------------------------------
# unicode character type tables
def makeunicodetype(unicode, trace):
FILE = "unicodedataplus/unicodetype_db.h"
print("--- Preparing", FILE, "...")
# extract unicode types
dummy = (0, 0, 0, 0, 0, 0)
table = [dummy]
cache = {dummy: 0}
index = [0] * len(unicode.chars)
numeric = {}
spaces = []
linebreaks = []
extra_casing = []
emoji = []
emoji_presentation = []
emoji_modifier = []
emoji_modifier_base = []
emoji_component = []
extended_pictographic = []
for char in unicode.chars:
record = unicode.table[char]
if record:
# extract database properties
category = record.general_category
bidirectional = record.bidi_class
properties = record.binary_properties
flags = 0
if category in ["Lm", "Lt", "Lu", "Ll", "Lo"]:
flags |= ALPHA_MASK
if "Lowercase" in properties:
flags |= LOWER_MASK
if 'Line_Break' in properties or bidirectional == "B":
flags |= LINEBREAK_MASK
linebreaks.append(char)
if category == "Zs" or bidirectional in ("WS", "B", "S"):
flags |= SPACE_MASK
spaces.append(char)
if category == "Lt":
flags |= TITLE_MASK
if "Uppercase" in properties:
flags |= UPPER_MASK
if char == ord(" ") or category[0] not in ("C", "Z"):
flags |= PRINTABLE_MASK
if "XID_Start" in properties:
flags |= XID_START_MASK
if "XID_Continue" in properties:
flags |= XID_CONTINUE_MASK
if "Cased" in properties:
flags |= CASED_MASK
if "Case_Ignorable" in properties:
flags |= CASE_IGNORABLE_MASK
if "Emoji" in properties:
emoji.append(char)
if "Emoji_Presentation" in properties:
emoji_presentation.append(char)
if "Emoji_Modifier" in properties:
emoji_modifier.append(char)
if "Emoji_Modifier_Base" in properties:
emoji_modifier_base.append(char)
if "Emoji_Component" in properties:
emoji_component.append(char)
if "Extended_Pictographic" in properties:
extended_pictographic.append(char)
sc = unicode.special_casing.get(char)
cf = unicode.case_folding.get(char, [char])
if record.simple_uppercase_mapping:
upper = int(record.simple_uppercase_mapping, 16)
else:
upper = char
if record.simple_lowercase_mapping:
lower = int(record.simple_lowercase_mapping, 16)
else:
lower = char
if record.simple_titlecase_mapping:
title = int(record.simple_titlecase_mapping, 16)
else:
title = upper
if sc is None and cf != [lower]:
sc = ([lower], [title], [upper])
if sc is None:
if upper == lower == title:
upper = lower = title = 0
else:
upper = upper - char
lower = lower - char
title = title - char
assert (abs(upper) <= 2147483647 and
abs(lower) <= 2147483647 and
abs(title) <= 2147483647)
else:
# This happens either when some character maps to more than one
# character in uppercase, lowercase, or titlecase or the
# casefolded version of the character is different from the
# lowercase. The extra characters are stored in a different
# array.
flags |= EXTENDED_CASE_MASK
lower = len(extra_casing) | (len(sc[0]) << 24)
extra_casing.extend(sc[0])
if cf != sc[0]:
lower |= len(cf) << 20
extra_casing.extend(cf)
upper = len(extra_casing) | (len(sc[2]) << 24)
extra_casing.extend(sc[2])
# Title is probably equal to upper.
if sc[1] == sc[2]:
title = upper
else:
title = len(extra_casing) | (len(sc[1]) << 24)
extra_casing.extend(sc[1])
# decimal digit, integer digit
decimal = 0
if record.decomposition_mapping:
flags |= DECIMAL_MASK
decimal = int(record.decomposition_mapping)
digit = 0
if record.numeric_type:
flags |= DIGIT_MASK
digit = int(record.numeric_type)
if record.numeric_value:
flags |= NUMERIC_MASK
numeric.setdefault(record.numeric_value, []).append(char)
item = (
upper, lower, title, decimal, digit, flags
)
# add entry to index and item tables
i = cache.get(item)
if i is None:
cache[item] = i = len(table)
table.append(item)
index[char] = i
print(len(table), "unique character type entries")
print(sum(map(len, numeric.values())), "numeric code points")
print(len(spaces), "whitespace code points")
print(len(linebreaks), "linebreak code points")
print(len(extra_casing), "extended case array")
print(len(emoji), "emoji code points")
print(len(emoji_presentation), "emoji presentation code points")
print(len(emoji_modifier), "emoji modifier code points")
print(len(emoji_modifier_base), "emoji modifier base code points")
print(len(emoji_component), "emoji component code points")
print(len(extended_pictographic), "extended pictographic code points")
print("--- Writing", FILE, "...")
with open(FILE, "w") as fp:
fprint = partial(print, file=fp)
fprint("/* this file was generated by %s %s */" % (SCRIPT, VERSION))
fprint()
fprint("/* a list of unique character type descriptors */")
fprint("const _PyUnicodePlus_TypeRecord _PyUnicodePlus_TypeRecords[] = {")
for item in table:
fprint(" {%d, %d, %d, %d, %d, %d}," % item)
fprint("};")
fprint()
fprint("/* extended case mappings */")
fprint()
fprint("const Py_UCS4 _PyUnicodePlus_ExtendedCase[] = {")
for c in extra_casing:
fprint(" %d," % c)
fprint("};")
fprint()
# split decomposition index table
index1, index2, shift = splitbins(index, trace)
fprint("/* type indexes */")
fprint("#define SHIFT", shift)
Array("index1", index1).dump(fp, trace)
Array("index2", index2).dump(fp, trace)
# Generate code for _PyUnicodePlus_ToNumeric()
numeric_items = sorted(numeric.items())
fprint('/* Returns the numeric value as double for Unicode characters')
fprint(' * having this property, -1.0 otherwise.')
fprint(' */')
fprint('double _PyUnicodePlus_ToNumeric(Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for value, codepoints in numeric_items:
# Turn text into float literals
parts = value.split('/')
parts = [repr(float(part)) for part in parts]
value = '/'.join(parts)
codepoints.sort()
for codepoint in codepoints:
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return (double) %s;' % (value,))
fprint(' }')
fprint(' return -1.0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsWhitespace()
fprint("/* Returns 1 for Unicode characters having the bidirectional")
fprint(" * type 'WS', 'B' or 'S' or the category 'Zs', 0 otherwise.")
fprint(" */")
fprint('int _PyUnicodePlus_IsWhitespace(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(spaces):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsLinebreak()
fprint("/* Returns 1 for Unicode characters having the line break")
fprint(" * property 'BK', 'CR', 'LF' or 'NL' or having bidirectional")
fprint(" * type 'B', 0 otherwise.")
fprint(" */")
fprint('int _PyUnicodePlus_IsLinebreak(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(linebreaks):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsEmoji()
fprint("/* Returns 1 for Unicode characters where Emoji=Yes")
fprint(" */")
fprint('int _PyUnicodePlus_IsEmoji(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(emoji):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsEmojiPresentation()
fprint("/* Returns 1 for Unicode characters where Emoji_Presentation=Yes")
fprint(" */")
fprint('int _PyUnicodePlus_IsEmojiPresentation(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(emoji_presentation):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsEmojiModifier()
fprint("/* Returns 1 for Unicode characters where Emoji_Modifier=Yes")
fprint(" */")
fprint('int _PyUnicodePlus_IsEmojiModifier(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(emoji_modifier):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsEmojiModifierBase()
fprint("/* Returns 1 for Unicode characters where Emoji_Modifier_Base=Yes")
fprint(" */")
fprint('int _PyUnicodePlus_IsEmojiModifierBase(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(emoji_modifier_base):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsEmojiComponent()
fprint("/* Returns 1 for Unicode characters where Emoji_Component=Yes")
fprint(" */")
fprint('int _PyUnicodePlus_IsEmojiComponent(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(emoji_component):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# Generate code for _PyUnicodePlus_IsExtendedPictographic()
fprint("/* Returns 1 for Unicode characters where Extended_Pictographic=Yes")
fprint(" */")
fprint('int _PyUnicodePlus_IsExtendedPictographic(const Py_UCS4 ch)')
fprint('{')
fprint(' switch (ch) {')
for codepoint in sorted(extended_pictographic):
fprint(' case 0x%04X:' % (codepoint,))
fprint(' return 1;')
fprint(' }')
fprint(' return 0;')
fprint('}')
fprint()
# --------------------------------------------------------------------
# unicode name database
def makeunicodename(unicode, trace):
FILE = "unicodedataplus/unicodename_db.h"
print("--- Preparing", FILE, "...")
# collect names
names = [None] * len(unicode.chars)
for char in unicode.chars:
record = unicode.table[char]
if record:
name = record.name.strip()
if name and name[0] != "<":
names[char] = name + chr(0)
print(len([n for n in names if n is not None]), "distinct names")
# collect unique words from names (note that we differ between
# words inside a sentence, and words ending a sentence. the
# latter includes the trailing null byte.
words = {}
n = b = 0
for char in unicode.chars:
name = names[char]
if name:
w = name.split()
b = b + len(name)
n = n + len(w)
for w in w:
l = words.get(w)
if l:
l.append(None)
else:
words[w] = [len(words)]
print(n, "words in text;", b, "bytes")
wordlist = list(words.items())
# sort on falling frequency, then by name
def word_key(a):
aword, alist = a
return -len(alist), aword
wordlist.sort(key=word_key)
# figure out how many phrasebook escapes we need
escapes = 0
while escapes * 256 < len(wordlist):
escapes = escapes + 1
print(escapes, "escapes")
short = 256 - escapes
assert short > 0
print(short, "short indexes in lexicon")
# statistics
n = 0
for i in range(short):
n = n + len(wordlist[i][1])
print(n, "short indexes in phrasebook")
# pick the most commonly used words, and sort the rest on falling
# length (to maximize overlap)
wordlist, wordtail = wordlist[:short], wordlist[short:]
wordtail.sort(key=lambda a: a[0], reverse=True)
wordlist.extend(wordtail)
# generate lexicon from words
lexicon_offset = [0]
lexicon = ""
words = {}
# build a lexicon string
offset = 0
for w, x in wordlist:
# encoding: bit 7 indicates last character in word (chr(128)
# indicates the last character in an entire string)
ww = w[:-1] + chr(ord(w[-1])+128)
# reuse string tails, when possible
o = lexicon.find(ww)
if o < 0:
o = offset
lexicon = lexicon + ww
offset = offset + len(w)
words[w] = len(lexicon_offset)
lexicon_offset.append(o)
lexicon = list(map(ord, lexicon))
# generate phrasebook from names and lexicon
phrasebook = [0]
phrasebook_offset = [0] * len(unicode.chars)
for char in unicode.chars:
name = names[char]
if name:
w = name.split()
phrasebook_offset[char] = len(phrasebook)
for w in w:
i = words[w]
if i < short:
phrasebook.append(i)
else:
# store as two bytes
phrasebook.append((i>>8) + short)
phrasebook.append(i&255)
assert getsize(phrasebook) == 1
#
# unicode name hash table
# extract names
data = []
for char in unicode.chars:
record = unicode.table[char]
if record:
name = record.name.strip()
if name and name[0] != "<":
data.append((name, char))
# the magic number 47 was chosen to minimize the number of
# collisions on the current data set. if you like, change it
# and see what happens...
codehash = Hash("code", data, 47)
print("--- Writing", FILE, "...")
with open(FILE, "w") as fp:
fprint = partial(print, file=fp)
fprint("/* this file was generated by %s %s */" % (SCRIPT, VERSION))
fprint()
fprint("#define NAME_MAXLEN", 256)
fprint()
fprint("/* lexicon */")
Array("lexicon", lexicon).dump(fp, trace)
Array("lexicon_offset", lexicon_offset).dump(fp, trace)
# split decomposition index table
offset1, offset2, shift = splitbins(phrasebook_offset, trace)
fprint("/* code->name phrasebook */")
fprint("#define phrasebook_shift", shift)
fprint("#define phrasebook_short", short)
Array("phrasebook", phrasebook).dump(fp, trace)
Array("phrasebook_offset1", offset1).dump(fp, trace)
Array("phrasebook_offset2", offset2).dump(fp, trace)
fprint("/* name->code dictionary */")
codehash.dump(fp, trace)
fprint()
fprint('static const unsigned int aliases_start = %#x;' %
NAME_ALIASES_START)
fprint('static const unsigned int aliases_end = %#x;' %
(NAME_ALIASES_START + len(unicode.aliases)))
fprint('static const unsigned int name_aliases[] = {')
for name, codepoint in unicode.aliases:
fprint(' 0x%04X,' % codepoint)
fprint('};')
# In Unicode 6.0.0, the sequences contain at most 4 BMP chars,
# so we are using Py_UCS2 seq[4]. This needs to be updated if longer
# sequences or sequences with non-BMP chars are added.
# unicodedata_lookup should be adapted too.
fprint(dedent("""
typedef struct NamedSequence {
int seqlen;
Py_UCS2 seq[4];
} named_sequence;
"""))
fprint('static const unsigned int named_sequences_start = %#x;' %
NAMED_SEQUENCES_START)
fprint('static const unsigned int named_sequences_end = %#x;' %
(NAMED_SEQUENCES_START + len(unicode.named_sequences)))
fprint('static const named_sequence named_sequences[] = {')
for name, sequence in unicode.named_sequences:
seq_str = ', '.join('0x%04X' % cp for cp in sequence)
fprint(' {%d, {%s}},' % (len(sequence), seq_str))
fprint('};')
def makeunicodeprop(unicode, trace):
dummy = (0, 0, 0, 0, 0, 0, 0, 0, 0)
table = [dummy]
cache = {0: dummy}
index = [0] * len(unicode.chars)
FILE = "unicodedataplus/unicodeprop_db.h"
print("--- Preparing", FILE, "...")
for char in unicode.chars:
record = unicode.table[char]
if record:
script = unicode.scripts.index(record.script)
block = unicode.blocks.index(record.block)
script_extensions = unicode.script_extensions.index(record.script_extensions)
indic_conjunct_break = unicode.indic_conjunct_break.index(record.indic_conjunct_break)
indic_positional = unicode.indic_positional.index(record.indic_positional)