7741516a8b
This commit collapses the various prelude traits for slices into just one trait: * SlicePrelude/SliceAllocPrelude => SliceExt * CloneSlicePrelude/CloneSliceAllocPrelude => CloneSliceExt * OrdSlicePrelude/OrdSliceAllocPrelude => OrdSliceExt * PartialEqSlicePrelude => PartialEqSliceExt
722 lines
25 KiB
Python
Executable File
722 lines
25 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Copyright 2011-2013 The Rust Project Developers. See the COPYRIGHT
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# file at the top-level directory of this distribution and at
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# http://rust-lang.org/COPYRIGHT.
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#
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# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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# option. This file may not be copied, modified, or distributed
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# except according to those terms.
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# This script uses the following Unicode tables:
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# - DerivedCoreProperties.txt
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# - EastAsianWidth.txt
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# - PropList.txt
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# - Scripts.txt
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# - UnicodeData.txt
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#
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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 unicode.rs file into git.
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import fileinput, re, os, sys, operator
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preamble = '''// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// NOTE: The following code was generated by "src/etc/unicode.py", do not edit directly
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#![allow(missing_docs, non_upper_case_globals, non_snake_case)]
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'''
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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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'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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'Nd': ['N'], 'Nl': ['N'], 'No': ['No'],
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'Pc': ['P'], 'Pd': ['P'], 'Ps': ['P'], 'Pe': ['P'],
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'Pi': ['P'], 'Pf': ['P'], 'Po': ['P'],
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'Sm': ['S'], 'Sc': ['S'], 'Sk': ['S'], 'So': ['S'],
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'Zs': ['Z'], 'Zl': ['Z'], 'Zp': ['Z'],
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'Cc': ['C'], 'Cf': ['C'], 'Cs': ['C'], 'Co': ['C'], 'Cn': ['C'],
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}
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# Grapheme cluster data
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# taken from UAX29, http://www.unicode.org/reports/tr29/
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# these code points are excluded from the Control category
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# NOTE: CR and LF are also technically excluded, but for
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# the sake of convenience we leave them in the Control group
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# and manually check them in the appropriate place. This is
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# still compliant with the implementation requirements.
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grapheme_control_exceptions = set([0x200c, 0x200d])
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# the Regional_Indicator category
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grapheme_regional_indicator = [(0x1f1e6, 0x1f1ff)]
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# "The following ... are specifically excluded" from the SpacingMark category
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# http://www.unicode.org/reports/tr29/#SpacingMark
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grapheme_spacingmark_exceptions = [(0x102b, 0x102c), (0x1038, 0x1038),
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(0x1062, 0x1064), (0x1067, 0x106d), (0x1083, 0x1083), (0x1087, 0x108c),
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(0x108f, 0x108f), (0x109a, 0x109c), (0x19b0, 0x19b4), (0x19b8, 0x19b9),
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(0x19bb, 0x19c0), (0x19c8, 0x19c9), (0x1a61, 0x1a61), (0x1a63, 0x1a64),
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(0xaa7b, 0xaa7b), (0xaa7d, 0xaa7d)]
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# these are included in the SpacingMark category
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grapheme_spacingmark_extra = set([0xe33, 0xeb3])
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def fetch(f):
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if not os.path.exists(f):
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os.system("curl -O http://www.unicode.org/Public/UNIDATA/%s"
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% f)
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if not os.path.exists(f):
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sys.stderr.write("cannot load %s" % f)
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exit(1)
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def is_valid_unicode(n):
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return 0 <= n <= 0xD7FF or 0xE000 <= n <= 0x10FFFF
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def load_unicode_data(f):
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fetch(f)
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gencats = {}
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upperlower = {}
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lowerupper = {}
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combines = {}
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canon_decomp = {}
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compat_decomp = {}
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for line in fileinput.input(f):
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fields = line.split(";")
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if len(fields) != 15:
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continue
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[code, name, gencat, combine, bidi,
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decomp, deci, digit, num, mirror,
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old, iso, upcase, lowcase, titlecase ] = fields
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code_org = code
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code = int(code, 16)
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if not is_valid_unicode(code):
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continue
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# generate char to char direct common and simple conversions
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# uppercase to lowercase
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if gencat == "Lu" and lowcase != "" and code_org != lowcase:
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upperlower[code] = int(lowcase, 16)
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# lowercase to uppercase
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if gencat == "Ll" and upcase != "" and code_org != upcase:
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lowerupper[code] = int(upcase, 16)
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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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seq = []
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for i in decomp.split()[1:]:
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seq.append(int(i, 16))
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compat_decomp[code] = seq
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else:
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seq = []
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for i in decomp.split():
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seq.append(int(i, 16))
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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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if cat not in gencats:
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gencats[cat] = []
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gencats[cat].append(code)
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# record combining class, if any
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if combine != "0":
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if combine not in combines:
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combines[combine] = []
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combines[combine].append(code)
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# generate Not_Assigned from Assigned
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gencats["Cn"] = gen_unassigned(gencats["Assigned"])
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# Assigned is not a real category
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del(gencats["Assigned"])
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# Other contains Not_Assigned
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gencats["C"].extend(gencats["Cn"])
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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, lowerupper, upperlower)
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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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cur_start = letters.pop(0)
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cur_end = cur_start
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for letter in letters:
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assert letter > cur_end, \
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"cur_end: %s, letter: %s" % (hex(cur_end), hex(letter))
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if letter == cur_end + 1:
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cur_end = letter
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else:
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cat_out.append((cur_start, cur_end))
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cur_start = cur_end = letter
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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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while lo <= hi:
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cat_out.append(lo)
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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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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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for chunk in content.split(","):
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if len(line) + len(chunk) < 98:
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if first:
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line += chunk
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else:
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line += ", " + chunk
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first = False
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else:
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f.write(line + ",\n")
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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(f):
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prop = None
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d_lo = 0
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d_hi = 0
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m = re1.match(line)
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if m:
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d_lo = m.group(1)
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d_hi = m.group(1)
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prop = m.group(2)
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else:
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m = re2.match(line)
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if m:
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d_lo = m.group(1)
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d_hi = m.group(2)
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prop = m.group(3)
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else:
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continue
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if interestingprops and prop not in interestingprops:
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continue
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d_lo = int(d_lo, 16)
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d_hi = int(d_hi, 16)
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if prop not in props:
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props[prop] = []
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props[prop].append((d_lo, d_hi))
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return props
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# load all widths of want_widths, except those in except_cats
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def load_east_asian_width(want_widths, except_cats):
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f = "EastAsianWidth.txt"
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fetch(f)
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widths = {}
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re1 = re.compile("^([0-9A-F]+);(\w+) +# (\w+)")
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re2 = re.compile("^([0-9A-F]+)\.\.([0-9A-F]+);(\w+) +# (\w+)")
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for line in fileinput.input(f):
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width = None
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d_lo = 0
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d_hi = 0
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cat = None
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m = re1.match(line)
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if m:
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d_lo = m.group(1)
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d_hi = m.group(1)
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width = m.group(2)
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cat = m.group(3)
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else:
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m = re2.match(line)
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if m:
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d_lo = m.group(1)
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d_hi = m.group(2)
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width = m.group(3)
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cat = m.group(4)
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else:
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continue
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if cat in except_cats or width not in want_widths:
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continue
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d_lo = int(d_lo, 16)
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d_hi = int(d_hi, 16)
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if width not in widths:
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widths[width] = []
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widths[width].append((d_lo, d_hi))
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return widths
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def escape_char(c):
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return "'\\u{%x}'" % c
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def emit_bsearch_range_table(f):
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f.write("""
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fn bsearch_range_table(c: char, r: &'static [(char,char)]) -> bool {
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use core::cmp::Ordering::{Equal, Less, Greater};
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use core::slice::SliceExt;
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r.binary_search(|&(lo,hi)| {
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if lo <= c && c <= hi { Equal }
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else if hi < c { Less }
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else { Greater }
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}).found().is_some()
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}\n
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""")
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def emit_table(f, name, t_data, t_type = "&'static [(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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if is_pub:
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pub_string = "pub "
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f.write(" %sstatic %s: %s = &[\n" % (pub_string, name, t_type))
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data = ""
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first = True
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for dat in t_data:
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if not first:
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data += ","
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first = False
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data += pfun(dat)
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format_table_content(f, data, 8)
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f.write("\n ];\n\n")
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def emit_property_module(f, mod, tbl, emit_fn):
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f.write("pub mod %s {\n" % mod)
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keys = tbl.keys()
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keys.sort()
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for cat in keys:
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emit_table(f, "%s_table" % cat, tbl[cat])
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if cat in emit_fn:
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f.write(" pub fn %s(c: char) -> bool {\n" % cat)
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f.write(" super::bsearch_range_table(c, %s_table)\n" % cat)
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f.write(" }\n\n")
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f.write("}\n\n")
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def emit_regex_module(f, cats, w_data):
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f.write("pub mod regex {\n")
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regex_class = "&'static [(char, char)]"
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class_table = "&'static [(&'static str, &'static %s)]" % regex_class
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emit_table(f, "UNICODE_CLASSES", cats, class_table,
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pfun=lambda x: "(\"%s\",&super::%s::%s_table)" % (x[0], x[1], x[0]))
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f.write(" pub static PERLD: &'static %s = &super::general_category::Nd_table;\n\n"
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% regex_class)
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f.write(" pub static PERLS: &'static %s = &super::property::White_Space_table;\n\n"
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% regex_class)
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emit_table(f, "PERLW", w_data, regex_class)
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f.write("}\n\n")
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def emit_conversions_module(f, lowerupper, upperlower):
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f.write("pub mod conversions {")
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f.write("""
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use core::cmp::Ordering::{Equal, Less, Greater};
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use core::slice::SliceExt;
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use core::option::Option;
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use core::option::Option::{Some, None};
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use core::slice;
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pub fn to_lower(c: char) -> char {
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match bsearch_case_table(c, LuLl_table) {
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None => c,
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Some(index) => LuLl_table[index].1
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}
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}
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pub fn to_upper(c: char) -> char {
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match bsearch_case_table(c, LlLu_table) {
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None => c,
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Some(index) => LlLu_table[index].1
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}
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}
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fn bsearch_case_table(c: char, table: &'static [(char, char)]) -> Option<uint> {
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match table.binary_search(|&(key, _)| {
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if c == key { Equal }
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else if key < c { Less }
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else { Greater }
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}) {
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slice::BinarySearchResult::Found(i) => Some(i),
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slice::BinarySearchResult::NotFound(_) => None,
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}
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}
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""")
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emit_table(f, "LuLl_table",
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sorted(upperlower.iteritems(), key=operator.itemgetter(0)), is_pub=False)
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emit_table(f, "LlLu_table",
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sorted(lowerupper.iteritems(), key=operator.itemgetter(0)), is_pub=False)
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f.write("}\n\n")
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def emit_grapheme_module(f, grapheme_table, grapheme_cats):
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f.write("""pub mod grapheme {
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use core::kinds::Copy;
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use core::slice::SliceExt;
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pub use self::GraphemeCat::*;
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use core::slice;
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#[allow(non_camel_case_types)]
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#[deriving(Clone)]
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pub enum GraphemeCat {
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""")
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for cat in grapheme_cats + ["Any"]:
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f.write(" GC_" + cat + ",\n")
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f.write(""" }
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impl Copy for GraphemeCat {}
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fn bsearch_range_value_table(c: char, r: &'static [(char, char, GraphemeCat)]) -> GraphemeCat {
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use core::cmp::Ordering::{Equal, Less, Greater};
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match r.binary_search(|&(lo, hi, _)| {
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if lo <= c && c <= hi { Equal }
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else if hi < c { Less }
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else { Greater }
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}) {
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slice::BinarySearchResult::Found(idx) => {
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let (_, _, cat) = r[idx];
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cat
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}
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slice::BinarySearchResult::NotFound(_) => GC_Any
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}
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}
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pub fn grapheme_category(c: char) -> GraphemeCat {
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bsearch_range_value_table(c, grapheme_cat_table)
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}
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""")
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emit_table(f, "grapheme_cat_table", grapheme_table, "&'static [(char, char, GraphemeCat)]",
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pfun=lambda x: "(%s,%s,GC_%s)" % (escape_char(x[0]), escape_char(x[1]), x[2]),
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is_pub=False)
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f.write("}\n")
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def emit_charwidth_module(f, width_table):
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f.write("pub mod charwidth {\n")
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f.write(" use core::option::Option;\n")
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f.write(" use core::option::Option::{Some, None};\n")
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f.write(" use core::slice::SliceExt;\n")
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f.write(" use core::slice;\n")
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f.write("""
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fn bsearch_range_value_table(c: char, is_cjk: bool, r: &'static [(char, char, u8, u8)]) -> u8 {
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use core::cmp::Ordering::{Equal, Less, Greater};
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match r.binary_search(|&(lo, hi, _, _)| {
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if lo <= c && c <= hi { Equal }
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else if hi < c { Less }
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else { Greater }
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}) {
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slice::BinarySearchResult::Found(idx) => {
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let (_, _, r_ncjk, r_cjk) = r[idx];
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if is_cjk { r_cjk } else { r_ncjk }
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}
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slice::BinarySearchResult::NotFound(_) => 1
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}
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}
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""")
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f.write("""
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pub fn width(c: char, is_cjk: bool) -> Option<uint> {
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match c as uint {
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_c @ 0 => Some(0), // null is zero width
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cu if cu < 0x20 => None, // control sequences have no width
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cu if cu < 0x7F => Some(1), // ASCII
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cu if cu < 0xA0 => None, // more control sequences
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_ => Some(bsearch_range_value_table(c, is_cjk, charwidth_table) as uint)
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}
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}
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""")
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f.write(" // character width table. Based on Markus Kuhn's free wcwidth() implementation,\n")
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f.write(" // http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c\n")
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emit_table(f, "charwidth_table", width_table, "&'static [(char, char, u8, u8)]", is_pub=False,
|
|
pfun=lambda x: "(%s,%s,%s,%s)" % (escape_char(x[0]), escape_char(x[1]), x[2], x[3]))
|
|
f.write("}\n\n")
|
|
|
|
def emit_norm_module(f, canon, compat, combine, norm_props):
|
|
canon_keys = canon.keys()
|
|
canon_keys.sort()
|
|
|
|
compat_keys = compat.keys()
|
|
compat_keys.sort()
|
|
|
|
canon_comp = {}
|
|
comp_exclusions = norm_props["Full_Composition_Exclusion"]
|
|
for char in canon_keys:
|
|
if True in map(lambda (lo, hi): lo <= char <= hi, comp_exclusions):
|
|
continue
|
|
decomp = canon[char]
|
|
if len(decomp) == 2:
|
|
if not canon_comp.has_key(decomp[0]):
|
|
canon_comp[decomp[0]] = []
|
|
canon_comp[decomp[0]].append( (decomp[1], char) )
|
|
canon_comp_keys = canon_comp.keys()
|
|
canon_comp_keys.sort()
|
|
|
|
f.write("pub mod normalization {\n")
|
|
|
|
def mkdata_fun(table):
|
|
def f(char):
|
|
data = "(%s,&[" % escape_char(char)
|
|
first = True
|
|
for d in table[char]:
|
|
if not first:
|
|
data += ","
|
|
first = False
|
|
data += escape_char(d)
|
|
data += "])"
|
|
return data
|
|
return f
|
|
|
|
f.write(" // Canonical decompositions\n")
|
|
emit_table(f, "canonical_table", canon_keys, "&'static [(char, &'static [char])]",
|
|
pfun=mkdata_fun(canon))
|
|
|
|
f.write(" // Compatibility decompositions\n")
|
|
emit_table(f, "compatibility_table", compat_keys, "&'static [(char, &'static [char])]",
|
|
pfun=mkdata_fun(compat))
|
|
|
|
def comp_pfun(char):
|
|
data = "(%s,&[" % escape_char(char)
|
|
canon_comp[char].sort(lambda x, y: x[0] - y[0])
|
|
first = True
|
|
for pair in canon_comp[char]:
|
|
if not first:
|
|
data += ","
|
|
first = False
|
|
data += "(%s,%s)" % (escape_char(pair[0]), escape_char(pair[1]))
|
|
data += "])"
|
|
return data
|
|
|
|
f.write(" // Canonical compositions\n")
|
|
emit_table(f, "composition_table", canon_comp_keys,
|
|
"&'static [(char, &'static [(char, char)])]", pfun=comp_pfun)
|
|
|
|
f.write("""
|
|
fn bsearch_range_value_table(c: char, r: &'static [(char, char, u8)]) -> u8 {
|
|
use core::cmp::Ordering::{Equal, Less, Greater};
|
|
use core::slice::SliceExt;
|
|
use core::slice;
|
|
match r.binary_search(|&(lo, hi, _)| {
|
|
if lo <= c && c <= hi { Equal }
|
|
else if hi < c { Less }
|
|
else { Greater }
|
|
}) {
|
|
slice::BinarySearchResult::Found(idx) => {
|
|
let (_, _, result) = r[idx];
|
|
result
|
|
}
|
|
slice::BinarySearchResult::NotFound(_) => 0
|
|
}
|
|
}\n
|
|
""")
|
|
|
|
emit_table(f, "combining_class_table", combine, "&'static [(char, char, u8)]", is_pub=False,
|
|
pfun=lambda x: "(%s,%s,%s)" % (escape_char(x[0]), escape_char(x[1]), x[2]))
|
|
|
|
f.write(" pub fn canonical_combining_class(c: char) -> u8 {\n"
|
|
+ " bsearch_range_value_table(c, combining_class_table)\n"
|
|
+ " }\n")
|
|
|
|
f.write("""
|
|
}
|
|
|
|
""")
|
|
|
|
def remove_from_wtable(wtable, val):
|
|
wtable_out = []
|
|
while wtable:
|
|
if wtable[0][1] < val:
|
|
wtable_out.append(wtable.pop(0))
|
|
elif wtable[0][0] > val:
|
|
break
|
|
else:
|
|
(wt_lo, wt_hi, width, width_cjk) = wtable.pop(0)
|
|
if wt_lo == wt_hi == val:
|
|
continue
|
|
elif wt_lo == val:
|
|
wtable_out.append((wt_lo+1, wt_hi, width, width_cjk))
|
|
elif wt_hi == val:
|
|
wtable_out.append((wt_lo, wt_hi-1, width, width_cjk))
|
|
else:
|
|
wtable_out.append((wt_lo, val-1, width, width_cjk))
|
|
wtable_out.append((val+1, wt_hi, width, width_cjk))
|
|
if wtable:
|
|
wtable_out.extend(wtable)
|
|
return wtable_out
|
|
|
|
|
|
|
|
def optimize_width_table(wtable):
|
|
wtable_out = []
|
|
w_this = wtable.pop(0)
|
|
while wtable:
|
|
if w_this[1] == wtable[0][0] - 1 and w_this[2:3] == wtable[0][2:3]:
|
|
w_tmp = wtable.pop(0)
|
|
w_this = (w_this[0], w_tmp[1], w_tmp[2], w_tmp[3])
|
|
else:
|
|
wtable_out.append(w_this)
|
|
w_this = wtable.pop(0)
|
|
wtable_out.append(w_this)
|
|
return wtable_out
|
|
|
|
if __name__ == "__main__":
|
|
r = "tables.rs"
|
|
if os.path.exists(r):
|
|
os.remove(r)
|
|
with open(r, "w") as rf:
|
|
# write the file's preamble
|
|
rf.write(preamble)
|
|
|
|
# download and parse all the data
|
|
fetch("ReadMe.txt")
|
|
with open("ReadMe.txt") as readme:
|
|
pattern = "for Version (\d+)\.(\d+)\.(\d+) of the Unicode"
|
|
unicode_version = re.search(pattern, readme.read()).groups()
|
|
rf.write("""
|
|
/// The version of [Unicode](http://www.unicode.org/)
|
|
/// that the `UnicodeChar` and `UnicodeStrPrelude` traits are based on.
|
|
pub const UNICODE_VERSION: (uint, uint, uint) = (%s, %s, %s);
|
|
""" % unicode_version)
|
|
(canon_decomp, compat_decomp, gencats, combines,
|
|
lowerupper, upperlower) = load_unicode_data("UnicodeData.txt")
|
|
want_derived = ["XID_Start", "XID_Continue", "Alphabetic", "Lowercase", "Uppercase"]
|
|
other_derived = ["Default_Ignorable_Code_Point", "Grapheme_Extend"]
|
|
derived = load_properties("DerivedCoreProperties.txt", want_derived + other_derived)
|
|
scripts = load_properties("Scripts.txt", [])
|
|
props = load_properties("PropList.txt",
|
|
["White_Space", "Join_Control", "Noncharacter_Code_Point"])
|
|
norm_props = load_properties("DerivedNormalizationProps.txt",
|
|
["Full_Composition_Exclusion"])
|
|
|
|
# grapheme cluster category from DerivedCoreProperties
|
|
# the rest are defined below
|
|
grapheme_cats = {}
|
|
grapheme_cats["Extend"] = derived["Grapheme_Extend"]
|
|
del(derived["Grapheme_Extend"])
|
|
|
|
# bsearch_range_table is used in all the property modules below
|
|
emit_bsearch_range_table(rf)
|
|
|
|
# all of these categories will also be available as \p{} in libregex
|
|
allcats = []
|
|
for (name, cat, pfuns) in ("general_category", gencats, ["N", "Cc"]), \
|
|
("derived_property", derived, want_derived), \
|
|
("script", scripts, []), \
|
|
("property", props, ["White_Space"]):
|
|
emit_property_module(rf, name, cat, pfuns)
|
|
allcats.extend(map(lambda x: (x, name), cat))
|
|
allcats.sort(key=lambda c: c[0])
|
|
|
|
# the \w regex corresponds to Alphabetic + Mark + Decimal_Number +
|
|
# Connector_Punctuation + Join-Control according to UTS#18
|
|
# http://www.unicode.org/reports/tr18/#Compatibility_Properties
|
|
perl_words = []
|
|
for cat in derived["Alphabetic"], gencats["M"], gencats["Nd"], \
|
|
gencats["Pc"], props["Join_Control"]:
|
|
perl_words.extend(ungroup_cat(cat))
|
|
perl_words = group_cat(perl_words)
|
|
|
|
# emit lookup tables for \p{}, along with \d, \w, and \s for libregex
|
|
emit_regex_module(rf, allcats, perl_words)
|
|
|
|
# normalizations and conversions module
|
|
emit_norm_module(rf, canon_decomp, compat_decomp, combines, norm_props)
|
|
emit_conversions_module(rf, lowerupper, upperlower)
|
|
|
|
### character width module
|
|
width_table = []
|
|
for zwcat in ["Me", "Mn", "Cf"]:
|
|
width_table.extend(map(lambda (lo, hi): (lo, hi, 0, 0), gencats[zwcat]))
|
|
width_table.append((4448, 4607, 0, 0))
|
|
|
|
# get widths, except those that are explicitly marked zero-width above
|
|
ea_widths = load_east_asian_width(["W", "F", "A"], ["Me", "Mn", "Cf"])
|
|
# these are doublewidth
|
|
for dwcat in ["W", "F"]:
|
|
width_table.extend(map(lambda (lo, hi): (lo, hi, 2, 2), ea_widths[dwcat]))
|
|
width_table.extend(map(lambda (lo, hi): (lo, hi, 1, 2), ea_widths["A"]))
|
|
|
|
width_table.sort(key=lambda w: w[0])
|
|
|
|
# soft hyphen is not zero width in preformatted text; it's used to indicate
|
|
# a hyphen inserted to facilitate a linebreak.
|
|
width_table = remove_from_wtable(width_table, 173)
|
|
|
|
# optimize the width table by collapsing adjacent entities when possible
|
|
width_table = optimize_width_table(width_table)
|
|
emit_charwidth_module(rf, width_table)
|
|
|
|
### grapheme cluster module
|
|
# from http://www.unicode.org/reports/tr29/#Grapheme_Cluster_Break_Property_Values
|
|
# Hangul syllable categories
|
|
want_hangul = ["L", "V", "T", "LV", "LVT"]
|
|
grapheme_cats.update(load_properties("HangulSyllableType.txt", want_hangul))
|
|
|
|
# Control
|
|
# This category also includes Cs (surrogate codepoints), but Rust's `char`s are
|
|
# Unicode Scalar Values only, and surrogates are thus invalid `char`s.
|
|
grapheme_cats["Control"] = set()
|
|
for cat in ["Zl", "Zp", "Cc", "Cf"]:
|
|
grapheme_cats["Control"] |= set(ungroup_cat(gencats[cat]))
|
|
grapheme_cats["Control"] = group_cat(list(
|
|
grapheme_cats["Control"]
|
|
- grapheme_control_exceptions
|
|
| (set(ungroup_cat(gencats["Cn"]))
|
|
& set(ungroup_cat(derived["Default_Ignorable_Code_Point"])))))
|
|
|
|
# Regional Indicator
|
|
grapheme_cats["RegionalIndicator"] = grapheme_regional_indicator
|
|
|
|
# Prepend - "Currently there are no characters with this value"
|
|
# (from UAX#29, Unicode 7.0)
|
|
|
|
# SpacingMark
|
|
grapheme_cats["SpacingMark"] = group_cat(list(
|
|
set(ungroup_cat(gencats["Mc"]))
|
|
- set(ungroup_cat(grapheme_cats["Extend"]))
|
|
| grapheme_spacingmark_extra
|
|
- set(ungroup_cat(grapheme_spacingmark_exceptions))))
|
|
|
|
grapheme_table = []
|
|
for cat in grapheme_cats:
|
|
grapheme_table.extend([(x, y, cat) for (x, y) in grapheme_cats[cat]])
|
|
grapheme_table.sort(key=lambda w: w[0])
|
|
emit_grapheme_module(rf, grapheme_table, grapheme_cats.keys())
|