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Clean up unicode.py script
This commit is contained in:
Paweł Romanowski
parent
be1dbaffed
commit
89feb6d5fd
1
.gitignore
vendored
1
.gitignore
vendored
@ -36,6 +36,7 @@ __pycache__/
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/src/libcore/unicode/Scripts.txt
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/src/libcore/unicode/SpecialCasing.txt
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/src/libcore/unicode/UnicodeData.txt
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/src/libcore/unicode/downloaded
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/stage[0-9]+/
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/target
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target/
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@ -1,35 +1,71 @@
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#!/usr/bin/env python
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# This script uses the following Unicode tables:
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# - DerivedCoreProperties.txt
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# - DerivedNormalizationProps.txt
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# - EastAsianWidth.txt
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# - auxiliary/GraphemeBreakProperty.txt
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# - PropList.txt
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# - ReadMe.txt
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# - Scripts.txt
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# - UnicodeData.txt
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#
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"""
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Regenerate Unicode tables (tables.rs).
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"""
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# This script uses the Unicode tables as defined
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# in the UnicodeFiles class.
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# Since this should not require frequent updates, we just store this
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# out-of-line and check the tables.rs file into git.
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import fileinput, re, os, sys, operator, math, datetime
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# Note that the "curl" program is required for operation.
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# This script is compatible with Python 2.7 and 3.x.
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# The directory in which this file resides.
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fdir = os.path.dirname(os.path.realpath(__file__)) + "/"
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import argparse
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import datetime
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import fileinput
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import operator
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import os
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import re
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import textwrap
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import subprocess
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preamble = '''
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from collections import namedtuple
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# we don't use enum.Enum because of Python 2.7 compatibility
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class UnicodeFiles(object):
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# ReadMe does not contain any unicode data, we
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# use it to extract versions.
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README = "ReadMe.txt"
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DERIVED_CORE_PROPERTIES = "DerivedCoreProperties.txt"
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DERIVED_NORMALIZATION_PROPS = "DerivedNormalizationProps.txt"
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SPECIAL_CASING = "SpecialCasing.txt"
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SCRIPTS = "Scripts.txt"
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PROPS = "PropList.txt"
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UNICODE_DATA = "UnicodeData.txt"
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UnicodeFiles.ALL_FILES = tuple(
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getattr(UnicodeFiles, name) for name in dir(UnicodeFiles)
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if not name.startswith("_")
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)
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# The directory this file is located in.
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THIS_DIR = os.path.dirname(os.path.realpath(__file__))
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# Where to download the Unicode data. The downloaded files
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# will be placed in sub-directories named after Unicode version.
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FETCH_DIR = os.path.join(THIS_DIR, "downloaded")
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FETCH_URL_LATEST = "ftp://ftp.unicode.org/Public/UNIDATA/{filename}"
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FETCH_URL_VERSION = "ftp://ftp.unicode.org/Public/{version}/ucd/{filename}"
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PREAMBLE = """\
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// NOTE: The following code was generated by "./unicode.py", do not edit directly
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#![allow(missing_docs, non_upper_case_globals, non_snake_case)]
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use unicode::version::UnicodeVersion;
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use unicode::bool_trie::{{BoolTrie, SmallBoolTrie}};
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'''.format(year = datetime.datetime.now().year)
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""".format(year=datetime.datetime.now().year)
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# Mapping taken from Table 12 from:
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# http://www.unicode.org/reports/tr44/#General_Category_Values
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expanded_categories = {
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EXPANDED_CATEGORIES = {
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'Lu': ['LC', 'L'], 'Ll': ['LC', 'L'], 'Lt': ['LC', 'L'],
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'Lm': ['L'], 'Lo': ['L'],
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'Mn': ['M'], 'Mc': ['M'], 'Me': ['M'],
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@ -42,22 +78,101 @@ expanded_categories = {
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}
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# these are the surrogate codepoints, which are not valid rust characters
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surrogate_codepoints = (0xd800, 0xdfff)
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SURROGATE_CODEPOINTS = (0xd800, 0xdfff)
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def fetch(f):
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path = fdir + os.path.basename(f)
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if not os.path.exists(path):
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os.system("curl -o {0}{1} ftp://ftp.unicode.org/Public/UNIDATA/{1}".format(fdir, f))
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UnicodeData = namedtuple(
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"UnicodeData", ("canon_decomp", "compat_decomp", "gencats", "combines",
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"to_upper", "to_lower", "to_title", )
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)
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UnicodeVersion = namedtuple(
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"UnicodeVersion", ("major", "minor", "micro", "as_str")
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)
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def fetch_files(version=None):
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"""
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Fetch all the Unicode files from unicode.org
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:param version: The desired Unicode version, as string.
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(If None, defaults to latest final release available).
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:return: The version downloaded (UnicodeVersion object).
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"""
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have_version = should_skip_fetch(version)
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if have_version:
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return have_version
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if version:
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# check if the desired version exists on the server
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get_fetch_url = lambda name: FETCH_URL_VERSION.format(version=version, filename=name)
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else:
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# extract the latest version
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get_fetch_url = lambda name: FETCH_URL_LATEST.format(filename=name)
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readme_url = get_fetch_url(UnicodeFiles.README)
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print("Fetching: {}".format(readme_url))
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readme_content = subprocess.check_output(("curl", readme_url))
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unicode_version = parse_unicode_version(
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str(readme_content, "utf8")
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)
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download_dir = os.path.join(FETCH_DIR, unicode_version.as_str)
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if not os.path.exists(download_dir):
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# for 2.7 compat, we don't use exist_ok=True
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os.makedirs(download_dir)
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for filename in UnicodeFiles.ALL_FILES:
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file_path = os.path.join(download_dir, filename)
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if filename == UnicodeFiles.README:
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with open(file_path, "wb") as fd:
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fd.write(readme_content)
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elif not os.path.exists(file_path):
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url = get_fetch_url(filename)
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print("Fetching: {}".format(url))
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subprocess.check_call(("curl", "-o", file_path, url))
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return unicode_version
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def should_skip_fetch(version):
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if not version:
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# should always check latest version
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return False
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fetch_dir = os.path.join(FETCH_DIR, version)
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for filename in UnicodeFiles.ALL_FILES:
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file_path = os.path.join(fetch_dir, filename)
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if not os.path.exists(file_path):
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return False
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with open(os.path.join(fetch_dir, UnicodeFiles.README)) as fd:
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return parse_unicode_version(fd.read())
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def parse_unicode_version(readme_content):
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# "raw string" is necessary for \d not being treated as escape char
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# (for the sake of compat with future Python versions)
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# see: https://docs.python.org/3.6/whatsnew/3.6.html#deprecated-python-behavior
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pattern = r"for Version (\d+)\.(\d+)\.(\d+) of the Unicode"
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groups = re.search(pattern, readme_content).groups()
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return UnicodeVersion(*map(int, groups), as_str=".".join(groups))
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def get_unicode_file_path(unicode_version, filename):
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return os.path.join(FETCH_DIR, unicode_version.as_str, filename)
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if not os.path.exists(path):
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sys.stderr.write("cannot load %s" % f)
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exit(1)
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def is_surrogate(n):
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return surrogate_codepoints[0] <= n <= surrogate_codepoints[1]
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return SURROGATE_CODEPOINTS[0] <= n <= SURROGATE_CODEPOINTS[1]
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def load_unicode_data(f):
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fetch(f)
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def load_unicode_data(file_path):
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gencats = {}
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to_lower = {}
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to_upper = {}
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@ -68,8 +183,8 @@ def load_unicode_data(f):
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udict = {}
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range_start = -1
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for line in fileinput.input(fdir + f):
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data = line.split(';')
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for line in fileinput.input(file_path):
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data = line.split(";")
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if len(data) != 15:
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continue
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cp = int(data[0], 16)
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@ -104,7 +219,7 @@ def load_unicode_data(f):
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# store decomposition, if given
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if decomp != "":
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if decomp.startswith('<'):
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if decomp.startswith("<"):
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seq = []
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for i in decomp.split()[1:]:
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seq.append(int(i, 16))
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@ -116,7 +231,7 @@ def load_unicode_data(f):
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canon_decomp[code] = seq
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# place letter in categories as appropriate
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for cat in [gencat, "Assigned"] + expanded_categories.get(gencat, []):
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for cat in [gencat, "Assigned"] + EXPANDED_CATEGORIES.get(gencat, []):
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if cat not in gencats:
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gencats[cat] = []
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gencats[cat].append(code)
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@ -136,12 +251,15 @@ def load_unicode_data(f):
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gencats = group_cats(gencats)
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combines = to_combines(group_cats(combines))
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return (canon_decomp, compat_decomp, gencats, combines, to_upper, to_lower, to_title)
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return UnicodeData(
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canon_decomp, compat_decomp, gencats, combines, to_upper,
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to_lower, to_title,
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)
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def load_special_casing(f, to_upper, to_lower, to_title):
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fetch(f)
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for line in fileinput.input(fdir + f):
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data = line.split('#')[0].split(';')
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def load_special_casing(file_path, unicode_data):
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for line in fileinput.input(file_path):
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data = line.split("#")[0].split(";")
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if len(data) == 5:
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code, lower, title, upper, _comment = data
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elif len(data) == 6:
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@ -155,7 +273,9 @@ def load_special_casing(f, to_upper, to_lower, to_title):
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title = title.strip()
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upper = upper.strip()
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key = int(code, 16)
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for (map_, values) in [(to_lower, lower), (to_upper, upper), (to_title, title)]:
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for (map_, values) in ((unicode_data.to_lower, lower),
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(unicode_data.to_upper, upper),
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(unicode_data.to_title, title)):
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if values != code:
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values = [int(i, 16) for i in values.split()]
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for _ in range(len(values), 3):
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@ -163,12 +283,14 @@ def load_special_casing(f, to_upper, to_lower, to_title):
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assert len(values) == 3
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map_[key] = values
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def group_cats(cats):
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cats_out = {}
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for cat in cats:
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cats_out[cat] = group_cat(cats[cat])
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return cats_out
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def group_cat(cat):
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cat_out = []
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letters = sorted(set(cat))
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@ -185,6 +307,7 @@ def group_cat(cat):
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cat_out.append((cur_start, cur_end))
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return cat_out
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def ungroup_cat(cat):
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cat_out = []
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for (lo, hi) in cat:
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@ -193,19 +316,22 @@ def ungroup_cat(cat):
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lo += 1
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return cat_out
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def gen_unassigned(assigned):
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assigned = set(assigned)
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return ([i for i in range(0, 0xd800) if i not in assigned] +
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[i for i in range(0xe000, 0x110000) if i not in assigned])
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def to_combines(combs):
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combs_out = []
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for comb in combs:
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for (lo, hi) in combs[comb]:
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combs_out.append((lo, hi, comb))
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combs_out.sort(key=lambda comb: comb[0])
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combs_out.sort(key=lambda c: c[0])
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return combs_out
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def format_table_content(f, content, indent):
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line = " " * indent
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first = True
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@ -221,13 +347,16 @@ def format_table_content(f, content, indent):
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line = " " * indent + chunk
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f.write(line)
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def load_properties(f, interestingprops):
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fetch(f)
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props = {}
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re1 = re.compile("^ *([0-9A-F]+) *; *(\w+)")
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re2 = re.compile("^ *([0-9A-F]+)\.\.([0-9A-F]+) *; *(\w+)")
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for line in fileinput.input(fdir + os.path.basename(f)):
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def load_properties(file_path, interestingprops):
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props = {}
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# "raw string" is necessary for \w not to be treated as escape char
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# (for the sake of compat with future Python versions)
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# see: https://docs.python.org/3.6/whatsnew/3.6.html#deprecated-python-behavior
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re1 = re.compile(r"^ *([0-9A-F]+) *; *(\w+)")
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re2 = re.compile(r"^ *([0-9A-F]+)\.\.([0-9A-F]+) *; *(\w+)")
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for line in fileinput.input(file_path):
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prop = None
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d_lo = 0
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d_hi = 0
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@ -258,9 +387,11 @@ def load_properties(f, interestingprops):
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return props
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def escape_char(c):
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return "'\\u{%x}'" % c if c != 0 else "'\\0'"
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def emit_table(f, name, t_data, t_type="&[(char, char)]", is_pub=True,
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pfun=lambda x: "(%s,%s)" % (escape_char(x[0]), escape_char(x[1]))):
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pub_string = ""
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@ -277,6 +408,7 @@ def emit_table(f, name, t_data, t_type = "&[(char, char)]", is_pub=True,
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format_table_content(f, data, 8)
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f.write("\n ];\n\n")
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def compute_trie(rawdata, chunksize):
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root = []
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childmap = {}
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@ -288,10 +420,11 @@ def compute_trie(rawdata, chunksize):
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childmap[child] = len(childmap)
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child_data.extend(data)
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root.append(childmap[child])
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return (root, child_data)
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return root, child_data
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def emit_bool_trie(f, name, t_data, is_pub=True):
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CHUNK = 64
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chunk_size = 64
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rawdata = [False] * 0x110000
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for (lo, hi) in t_data:
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for cp in range(lo, hi + 1):
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@ -299,7 +432,7 @@ def emit_bool_trie(f, name, t_data, is_pub=True):
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# convert to bitmap chunks of 64 bits each
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chunks = []
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for i in range(0x110000 // CHUNK):
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for i in range(0x110000 // chunk_size):
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chunk = 0
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for j in range(64):
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if rawdata[i * 64 + j]:
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@ -311,12 +444,12 @@ def emit_bool_trie(f, name, t_data, is_pub=True):
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pub_string = "pub "
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f.write(" %sconst %s: &super::BoolTrie = &super::BoolTrie {\n" % (pub_string, name))
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f.write(" r1: [\n")
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data = ','.join('0x%016x' % chunk for chunk in chunks[0:0x800 // CHUNK])
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data = ','.join('0x%016x' % chunk for chunk in chunks[0:0x800 // chunk_size])
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format_table_content(f, data, 12)
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f.write("\n ],\n")
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# 0x800..0x10000 trie
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(r2, r3) = compute_trie(chunks[0x800 // CHUNK : 0x10000 // CHUNK], 64 // CHUNK)
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(r2, r3) = compute_trie(chunks[0x800 // chunk_size : 0x10000 // chunk_size], 64 // chunk_size)
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f.write(" r2: [\n")
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data = ','.join(str(node) for node in r2)
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format_table_content(f, data, 12)
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@ -327,7 +460,7 @@ def emit_bool_trie(f, name, t_data, is_pub=True):
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f.write("\n ],\n")
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# 0x10000..0x110000 trie
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(mid, r6) = compute_trie(chunks[0x10000 // CHUNK : 0x110000 // CHUNK], 64 // CHUNK)
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(mid, r6) = compute_trie(chunks[0x10000 // chunk_size : 0x110000 // chunk_size], 64 // chunk_size)
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(r4, r5) = compute_trie(mid, 64)
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f.write(" r4: [\n")
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data = ','.join(str(node) for node in r4)
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@ -344,6 +477,7 @@ def emit_bool_trie(f, name, t_data, is_pub=True):
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f.write(" };\n\n")
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def emit_small_bool_trie(f, name, t_data, is_pub=True):
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last_chunk = max(hi // 64 for (lo, hi) in t_data)
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n_chunks = last_chunk + 1
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@ -374,6 +508,7 @@ def emit_small_bool_trie(f, name, t_data, is_pub=True):
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f.write(" };\n\n")
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def emit_property_module(f, mod, tbl, emit):
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f.write("pub mod %s {\n" % mod)
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for cat in sorted(emit):
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@ -389,7 +524,8 @@ def emit_property_module(f, mod, tbl, emit):
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f.write(" }\n\n")
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f.write("}\n\n")
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def emit_conversions_module(f, to_upper, to_lower, to_title):
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def emit_conversions_module(f, unicode_data):
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f.write("pub mod conversions {")
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f.write("""
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pub fn to_lower(c: char) -> [char; 3] {
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@ -414,74 +550,104 @@ def emit_conversions_module(f, to_upper, to_lower, to_title):
|
||||
t_type = "&[(char, [char; 3])]"
|
||||
pfun = lambda x: "(%s,[%s,%s,%s])" % (
|
||||
escape_char(x[0]), escape_char(x[1][0]), escape_char(x[1][1]), escape_char(x[1][2]))
|
||||
emit_table(f, "to_lowercase_table",
|
||||
sorted(to_lower.items(), key=operator.itemgetter(0)),
|
||||
is_pub=False, t_type = t_type, pfun=pfun)
|
||||
emit_table(f, "to_uppercase_table",
|
||||
sorted(to_upper.items(), key=operator.itemgetter(0)),
|
||||
is_pub=False, t_type = t_type, pfun=pfun)
|
||||
f.write("}\n\n")
|
||||
|
||||
def emit_norm_module(f, canon, compat, combine, norm_props):
|
||||
canon_keys = sorted(canon.keys())
|
||||
emit_table(f,
|
||||
name="to_lowercase_table",
|
||||
t_data=sorted(unicode_data.to_lower.items(), key=operator.itemgetter(0)),
|
||||
t_type=t_type,
|
||||
is_pub=False,
|
||||
pfun=pfun)
|
||||
|
||||
compat_keys = sorted(compat.keys())
|
||||
emit_table(f,
|
||||
name="to_uppercase_table",
|
||||
t_data=sorted(unicode_data.to_upper.items(), key=operator.itemgetter(0)),
|
||||
t_type=t_type,
|
||||
is_pub=False,
|
||||
pfun=pfun)
|
||||
|
||||
f.write("}\n")
|
||||
|
||||
|
||||
def emit_norm_module(f, unicode_data, norm_props):
|
||||
canon_keys = sorted(unicode_data.canon_decomp.keys())
|
||||
|
||||
canon_comp = {}
|
||||
comp_exclusions = norm_props["Full_Composition_Exclusion"]
|
||||
for char in canon_keys:
|
||||
if any(lo <= char <= hi for lo, hi in comp_exclusions):
|
||||
continue
|
||||
decomp = canon[char]
|
||||
decomp = unicode_data.canon_decomp[char]
|
||||
if len(decomp) == 2:
|
||||
if decomp[0] not in canon_comp:
|
||||
canon_comp[decomp[0]] = []
|
||||
canon_comp[decomp[0]].append((decomp[1], char))
|
||||
canon_comp_keys = sorted(canon_comp.keys())
|
||||
|
||||
if __name__ == "__main__":
|
||||
r = fdir + "tables.rs"
|
||||
if os.path.exists(r):
|
||||
os.remove(r)
|
||||
with open(r, "w") as rf:
|
||||
|
||||
def parse_args():
|
||||
parser = argparse.ArgumentParser(description=__doc__)
|
||||
parser.add_argument("-v", "--version", default=None, type=str,
|
||||
help="Unicode version to use (if not specified,"
|
||||
" defaults to latest available final release).")
|
||||
|
||||
return parser.parse_args()
|
||||
|
||||
|
||||
def main():
|
||||
args = parse_args()
|
||||
|
||||
unicode_version = fetch_files(args.version)
|
||||
print("Using Unicode version: {}".format(unicode_version.as_str))
|
||||
|
||||
tables_rs_path = os.path.join(THIS_DIR, "tables.rs")
|
||||
if os.path.exists(tables_rs_path):
|
||||
os.remove(tables_rs_path)
|
||||
|
||||
with open(tables_rs_path, "w") as rf:
|
||||
# write the file's preamble
|
||||
rf.write(preamble)
|
||||
rf.write(PREAMBLE)
|
||||
|
||||
# download and parse all the data
|
||||
fetch("ReadMe.txt")
|
||||
with open(fdir + "ReadMe.txt") as readme:
|
||||
pattern = "for Version (\d+)\.(\d+)\.(\d+) of the Unicode"
|
||||
unicode_version = re.search(pattern, readme.read()).groups()
|
||||
rf.write("""
|
||||
unicode_version_notice = textwrap.dedent("""
|
||||
/// The version of [Unicode](http://www.unicode.org/) that the Unicode parts of
|
||||
/// `char` and `str` methods are based on.
|
||||
#[unstable(feature = "unicode_version", issue = "49726")]
|
||||
pub const UNICODE_VERSION: UnicodeVersion = UnicodeVersion {
|
||||
major: %s,
|
||||
minor: %s,
|
||||
micro: %s,
|
||||
pub const UNICODE_VERSION: UnicodeVersion = UnicodeVersion {{
|
||||
major: {version.major},
|
||||
minor: {version.minor},
|
||||
micro: {version.micro},
|
||||
_priv: (),
|
||||
};
|
||||
""" % unicode_version)
|
||||
(canon_decomp, compat_decomp, gencats, combines,
|
||||
to_upper, to_lower, to_title) = load_unicode_data("UnicodeData.txt")
|
||||
load_special_casing("SpecialCasing.txt", to_upper, to_lower, to_title)
|
||||
}};
|
||||
""").format(version=unicode_version)
|
||||
rf.write(unicode_version_notice)
|
||||
|
||||
get_path = lambda f: get_unicode_file_path(unicode_version, f)
|
||||
|
||||
unicode_data = load_unicode_data(get_path(UnicodeFiles.UNICODE_DATA))
|
||||
load_special_casing(get_path(UnicodeFiles.SPECIAL_CASING), unicode_data)
|
||||
|
||||
want_derived = ["XID_Start", "XID_Continue", "Alphabetic", "Lowercase", "Uppercase",
|
||||
"Cased", "Case_Ignorable", "Grapheme_Extend"]
|
||||
derived = load_properties("DerivedCoreProperties.txt", want_derived)
|
||||
scripts = load_properties("Scripts.txt", [])
|
||||
props = load_properties("PropList.txt",
|
||||
["White_Space", "Join_Control", "Noncharacter_Code_Point", "Pattern_White_Space"])
|
||||
norm_props = load_properties("DerivedNormalizationProps.txt",
|
||||
derived = load_properties(get_path(UnicodeFiles.DERIVED_CORE_PROPERTIES), want_derived)
|
||||
|
||||
# TODO scripts not used?
|
||||
scripts = load_properties(get_path(UnicodeFiles.SCRIPTS), [])
|
||||
props = load_properties(get_path(UnicodeFiles.PROPS),
|
||||
["White_Space", "Join_Control", "Noncharacter_Code_Point",
|
||||
"Pattern_White_Space"])
|
||||
norm_props = load_properties(get_path(UnicodeFiles.DERIVED_NORMALIZATION_PROPS),
|
||||
["Full_Composition_Exclusion"])
|
||||
|
||||
# category tables
|
||||
for (name, cat, pfuns) in ("general_category", gencats, ["N", "Cc"]), \
|
||||
("derived_property", derived, want_derived), \
|
||||
("property", props, ["White_Space", "Pattern_White_Space"]):
|
||||
for (name, cat, pfuns) in (("general_category", unicode_data.gencats, ["N", "Cc"]),
|
||||
("derived_property", derived, want_derived),
|
||||
("property", props, ["White_Space", "Pattern_White_Space"])):
|
||||
emit_property_module(rf, name, cat, pfuns)
|
||||
|
||||
# normalizations and conversions module
|
||||
emit_norm_module(rf, canon_decomp, compat_decomp, combines, norm_props)
|
||||
emit_conversions_module(rf, to_upper, to_lower, to_title)
|
||||
emit_norm_module(rf, unicode_data, norm_props)
|
||||
emit_conversions_module(rf, unicode_data)
|
||||
|
||||
print("Regenerated tables.rs.")
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user