import array import unicodedata import requests MAX_CODEPOINTS = 0x110000 UNICODE_DATA_URL = "https://www.unicode.org/Public/UCD/latest/ucd/UnicodeData.txt" # see https://www.unicode.org/L2/L1999/UnicodeData.html def unicode_data_iter(): res = requests.get(UNICODE_DATA_URL) res.raise_for_status() data = res.content.decode() prev = [] for line in data.splitlines(): # ej: 0000;;Cc;0;BN;;;;;N;NULL;;;; line = line.split(";") cpt = int(line[0], base=16) assert cpt < MAX_CODEPOINTS cpt_lower = int(line[-2] or "0", base=16) assert cpt_lower < MAX_CODEPOINTS cpt_upper = int(line[-3] or "0", base=16) assert cpt_upper < MAX_CODEPOINTS categ = line[2].strip() assert len(categ) == 2 bidir = line[4].strip() assert len(categ) == 2 name = line[1] if name.endswith(", First>"): prev = (cpt, cpt_lower, cpt_upper, categ, bidir) continue if name.endswith(", Last>"): assert prev[1:] == (0, 0, categ, bidir) for c in range(prev[0], cpt): yield (c, cpt_lower, cpt_upper, categ, bidir) yield (cpt, cpt_lower, cpt_upper, categ, bidir) # see definition in unicode.h CODEPOINT_FLAG_UNDEFINED = 0x0001 # CODEPOINT_FLAG_NUMBER = 0x0002 # \p{N} CODEPOINT_FLAG_LETTER = 0x0004 # \p{L} CODEPOINT_FLAG_SEPARATOR = 0x0008 # \p{Z} CODEPOINT_FLAG_MARK = 0x0010 # \p{M} CODEPOINT_FLAG_PUNCTUATION = 0x0020 # \p{P} CODEPOINT_FLAG_SYMBOL = 0x0040 # \p{S} CODEPOINT_FLAG_CONTROL = 0x0080 # \p{C} UNICODE_CATEGORY_TO_FLAG = { "Cn": CODEPOINT_FLAG_UNDEFINED, # Undefined "Cc": CODEPOINT_FLAG_CONTROL, # Control "Cf": CODEPOINT_FLAG_CONTROL, # Format "Co": CODEPOINT_FLAG_CONTROL, # Private Use "Cs": CODEPOINT_FLAG_CONTROL, # Surrrogate "Ll": CODEPOINT_FLAG_LETTER, # Lowercase Letter "Lm": CODEPOINT_FLAG_LETTER, # Modifier Letter "Lo": CODEPOINT_FLAG_LETTER, # Other Letter "Lt": CODEPOINT_FLAG_LETTER, # Titlecase Letter "Lu": CODEPOINT_FLAG_LETTER, # Uppercase Letter "L&": CODEPOINT_FLAG_LETTER, # Cased Letter "Mc": CODEPOINT_FLAG_MARK, # Spacing Mark "Me": CODEPOINT_FLAG_MARK, # Enclosing Mark "Mn": CODEPOINT_FLAG_MARK, # Nonspacing Mark "Nd": CODEPOINT_FLAG_NUMBER, # Decimal Number "Nl": CODEPOINT_FLAG_NUMBER, # Letter Number "No": CODEPOINT_FLAG_NUMBER, # Other Number "Pc": CODEPOINT_FLAG_PUNCTUATION, # Connector Punctuation "Pd": CODEPOINT_FLAG_PUNCTUATION, # Dash Punctuation "Pe": CODEPOINT_FLAG_PUNCTUATION, # Close Punctuation "Pf": CODEPOINT_FLAG_PUNCTUATION, # Final Punctuation "Pi": CODEPOINT_FLAG_PUNCTUATION, # Initial Punctuation "Po": CODEPOINT_FLAG_PUNCTUATION, # Other Punctuation "Ps": CODEPOINT_FLAG_PUNCTUATION, # Open Punctuation "Sc": CODEPOINT_FLAG_SYMBOL, # Currency Symbol "Sk": CODEPOINT_FLAG_SYMBOL, # Modifier Symbol "Sm": CODEPOINT_FLAG_SYMBOL, # Math Symbol "So": CODEPOINT_FLAG_SYMBOL, # Other Symbol "Zl": CODEPOINT_FLAG_SEPARATOR, # Line Separator "Zp": CODEPOINT_FLAG_SEPARATOR, # Paragraph Separator "Zs": CODEPOINT_FLAG_SEPARATOR, # Space Separator } codepoint_flags = array.array('H', [CODEPOINT_FLAG_UNDEFINED]) * MAX_CODEPOINTS table_whitespace = [] table_lowercase = [] table_uppercase = [] table_nfd = [] for (cpt, cpt_lower, cpt_upper, categ, bidir) in unicode_data_iter(): # convert codepoint to unicode character char = chr(cpt) # codepoint category flags codepoint_flags[cpt] = UNICODE_CATEGORY_TO_FLAG[categ] # lowercase conversion if cpt_lower: table_lowercase.append((cpt, cpt_lower)) # uppercase conversion if cpt_upper: table_uppercase.append((cpt, cpt_upper)) # NFD normalization norm = ord(unicodedata.normalize('NFD', char)[0]) if cpt != norm: table_nfd.append((cpt, norm)) # whitespaces, see "" https://www.unicode.org/Public/UCD/latest/ucd/PropList.txt table_whitespace.extend(range(0x0009, 0x000D + 1)) table_whitespace.extend(range(0x2000, 0x200A + 1)) table_whitespace.extend([0x0020, 0x0085, 0x00A0, 0x1680, 0x2028, 0x2029, 0x202F, 0x205F, 0x3000]) # sort by codepoint table_whitespace.sort() table_lowercase.sort() table_uppercase.sort() table_nfd.sort() # group ranges with same flags ranges_flags = [(0, codepoint_flags[0])] # start, flags for codepoint, flags in enumerate(codepoint_flags): if flags != ranges_flags[-1][1]: ranges_flags.append((codepoint, flags)) ranges_flags.append((MAX_CODEPOINTS, 0x0000)) # group ranges with same nfd ranges_nfd = [(0, 0, 0)] # start, last, nfd for codepoint, norm in table_nfd: start = ranges_nfd[-1][0] if ranges_nfd[-1] != (start, codepoint - 1, norm): ranges_nfd.append(None) start = codepoint ranges_nfd[-1] = (start, codepoint, norm) # Generate 'unicode-data.cpp': # python ./scripts//gen-unicode-data.py > unicode-data.cpp def out(line=""): print(line, end='\n') # noqa out("""\ // generated with scripts/gen-unicode-data.py #include "unicode-data.h" #include #include #include #include """) out("const std::vector> unicode_ranges_flags = { // start, flags // last=next_start-1") for codepoint, flags in ranges_flags: out("{0x%06X, 0x%04X}," % (codepoint, flags)) out("};\n") out("const std::unordered_set unicode_set_whitespace = {") for codepoint in table_whitespace: out("0x%06X," % codepoint) out("};\n") out("const std::unordered_map unicode_map_lowercase = {") for tuple in table_lowercase: out("{0x%06X, 0x%06X}," % tuple) out("};\n") out("const std::unordered_map unicode_map_uppercase = {") for tuple in table_uppercase: out("{0x%06X, 0x%06X}," % tuple) out("};\n") out("const std::vector unicode_ranges_nfd = { // start, last, nfd") for triple in ranges_nfd: out("{0x%06X, 0x%06X, 0x%06X}," % triple) out("};\n")