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ruby/enc/unicode/case-folding.rb

419 строки
12 KiB
Ruby
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#!/usr/bin/ruby
require 'stringio'
# Usage (for case folding only):
# $ wget http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
# $ ruby case-folding.rb CaseFolding.txt -o casefold.h
# or (for case folding and case mapping):
# $ wget http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
# $ wget http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
# $ wget http://www.unicode.org/Public/UNIDATA/SpecialCasing.txt
# $ ruby case-folding.rb -m . -o casefold.h
# using -d or --debug will include UTF-8 characters in comments for debugging
class CaseFolding
module Util
module_function
def hex_seq(v)
v.map { |i| "0x%04x" % i }.join(", ")
end
def print_table_1(dest, type, mapping_data, data)
for k, v in data = data.sort
sk = (Array === k and k.length > 1) ? "{#{hex_seq(k)}}" : ("0x%04x" % k)
if type=='CaseUnfold_11' and v.length>1
# reorder CaseUnfold_11 entries to avoid special treatment for U+03B9/U+03BC/U+A64B
item = mapping_data.map("%04X" % k[0])
upper = item.upper if item
v = v.sort_by { |i| ("%04X"%i) == upper ? 0 : 1 }
end
ck = @debug ? ' /* ' + Array(k).pack("U*") + ' */' : ''
cv = @debug ? ' /* ' + Array(v).map{|c|[c].pack("U*")}.join(", ") + ' */' : ''
dest.print(" {#{sk}#{ck}, {#{v.length}#{mapping_data.flags(k, type, v)}, {#{hex_seq(v)}#{cv}}}},\n")
end
data
end
def print_table(dest, type, mapping_data, data)
dest.print("static const #{type}_Type #{type}_Table[] = {\n")
i = 0
ret = data.inject([]) do |a, (n, d)|
dest.print("#define #{n} (*(#{type}_Type (*)[#{d.size}])(#{type}_Table+#{i}))\n")
i += d.size
a.concat(print_table_1(dest, type, mapping_data, d))
end
dest.print("};\n\n")
ret
end
end
include Util
attr_reader :fold, :fold_locale, :unfold, :unfold_locale, :version
def load(filename)
pattern = /([0-9A-F]{4,6}); ([CFT]); ([0-9A-F]{4,6})(?: ([0-9A-F]{4,6}))?(?: ([0-9A-F]{4,6}))?;/
@fold = fold = {}
@unfold = unfold = [{}, {}, {}]
@debug = false
@version = nil
turkic = []
IO.foreach(filename, mode: "rb") do |line|
@version ||= line[/-([0-9.]+).txt/, 1]
next unless res = pattern.match(line)
ch_from = res[1].to_i(16)
if res[2] == 'T'
# Turkic case folding
turkic << ch_from
next
end
# store folding data
ch_to = res[3..6].inject([]) do |a, i|
break a unless i
a << i.to_i(16)
end
fold[ch_from] = ch_to
# store unfolding data
i = ch_to.length - 1
(unfold[i][ch_to] ||= []) << ch_from
end
# move locale dependent data to (un)fold_locale
@fold_locale = fold_locale = {}
@unfold_locale = unfold_locale = [{}, {}]
for ch_from in turkic
key = fold[ch_from]
i = key.length - 1
unfold_locale[i][i == 0 ? key[0] : key] = unfold[i].delete(key)
fold_locale[ch_from] = fold.delete(ch_from)
end
self
end
def range_check(code)
"#{code} <= MAX_CODE_VALUE && #{code} >= MIN_CODE_VALUE"
end
def lookup_hash(key, type, data)
hash = "onigenc_unicode_#{key}_hash"
lookup = "onigenc_unicode_#{key}_lookup"
arity = Array(data[0][0]).size
gperf = %W"gperf -7 -k#{[*1..(arity*3)].join(',')} -F,-1 -c -j1 -i1 -t -T -E -C -H #{hash} -N #{lookup} -n"
argname = arity > 1 ? "codes" : "code"
argdecl = "const OnigCodePoint #{arity > 1 ? "*": ""}#{argname}"
n = 7
m = (1 << n) - 1
min, max = data.map {|c, *|c}.flatten.minmax
src = IO.popen(gperf, "r+") {|f|
f << "short\n%%\n"
data.each_with_index {|(k, _), i|
k = Array(k)
ks = k.map {|j| [(j >> n*2) & m, (j >> n) & m, (j) & m]}.flatten.map {|c| "\\x%.2x" % c}.join("")
f.printf "\"%s\", ::::/*%s*/ %d\n", ks, k.map {|c| "0x%.4x" % c}.join(","), i
}
f << "%%\n"
f.close_write
f.read
}
src.sub!(/^(#{hash})\s*\(.*?\).*?\n\{\n(.*)^\}/m) {
name = $1
body = $2
body.gsub!(/\(unsigned char\)str\[(\d+)\]/, "bits_#{arity > 1 ? 'at' : 'of'}(#{argname}, \\1)")
"#{name}(#{argdecl})\n{\n#{body}}"
}
src.sub!(/const short *\*\n^(#{lookup})\s*\(.*?\).*?\n\{\n(.*)^\}/m) {
name = $1
body = $2
body.sub!(/\benum\s+\{(\n[ \t]+)/, "\\&MIN_CODE_VALUE = 0x#{min.to_s(16)},\\1""MAX_CODE_VALUE = 0x#{max.to_s(16)},\\1")
body.gsub!(/(#{hash})\s*\(.*?\)/, "\\1(#{argname})")
body.gsub!(/\{"",-1}/, "-1")
body.gsub!(/\{"(?:[^"]|\\")+", *::::(.*)\}/, '\1')
body.sub!(/(\s+if\s)\(len\b.*\)/) do
"#$1(" <<
(arity > 1 ? (0...arity).map {|i| range_check("#{argname}[#{i}]")}.join(" &&\n ") : range_check(argname)) <<
")"
end
v = nil
body.sub!(/(if\s*\(.*MAX_HASH_VALUE.*\)\n([ \t]*))\{(.*?)\n\2\}/m) {
pre = $1
indent = $2
s = $3
s.sub!(/const char *\* *(\w+)( *= *wordlist\[\w+\]).\w+/, 'short \1 = wordlist[key]')
v = $1
s.sub!(/\bif *\(.*\)/, "if (#{v} >= 0 && code#{arity}_equal(#{argname}, #{key}_Table[#{v}].from))")
"#{pre}{#{s}\n#{indent}}"
}
body.sub!(/\b(return\s+&)([^;]+);/, '\1'"#{key}_Table[#{v}].to;")
"static const #{type} *\n#{name}(#{argdecl})\n{\n#{body}}"
}
src
end
def display(dest, mapping_data)
# print the header
dest.print("/* DO NOT EDIT THIS FILE. */\n")
dest.print("/* Generated by enc/unicode/case-folding.rb */\n\n")
versions = version.scan(/\d+/)
dest.print("#if defined ONIG_UNICODE_VERSION_STRING && !( \\\n")
%w[MAJOR MINOR TEENY].zip(versions) do |n, v|
dest.print(" ONIG_UNICODE_VERSION_#{n} == #{v} && \\\n")
end
dest.print(" 1)\n")
dest.print("# error ONIG_UNICODE_VERSION_STRING mismatch\n")
dest.print("#endif\n")
dest.print("#define ONIG_UNICODE_VERSION_STRING #{version.dump}\n")
%w[MAJOR MINOR TEENY].zip(versions) do |n, v|
dest.print("#define ONIG_UNICODE_VERSION_#{n} #{v}\n")
end
dest.print("\n")
# print folding data
# CaseFold + CaseFold_Locale
name = "CaseFold_11"
data = print_table(dest, name, mapping_data, "CaseFold"=>fold, "CaseFold_Locale"=>fold_locale)
dest.print lookup_hash(name, "CodePointList3", data)
# print unfolding data
# CaseUnfold_11 + CaseUnfold_11_Locale
name = "CaseUnfold_11"
data = print_table(dest, name, mapping_data, name=>unfold[0], "#{name}_Locale"=>unfold_locale[0])
dest.print lookup_hash(name, "CodePointList3", data)
# CaseUnfold_12 + CaseUnfold_12_Locale
name = "CaseUnfold_12"
data = print_table(dest, name, mapping_data, name=>unfold[1], "#{name}_Locale"=>unfold_locale[1])
dest.print lookup_hash(name, "CodePointList2", data)
# CaseUnfold_13
name = "CaseUnfold_13"
data = print_table(dest, name, mapping_data, name=>unfold[2])
dest.print lookup_hash(name, "CodePointList2", data)
# TitleCase
dest.print mapping_data.specials_output
end
def debug!
@debug = true
end
def self.load(*args)
new.load(*args)
end
end
class MapItem
attr_accessor :upper, :lower, :title, :code
def initialize(code, upper, lower, title)
@code = code
@upper = upper unless upper == ''
@lower = lower unless lower == ''
@title = title unless title == ''
end
end
class CaseMapping
attr_reader :filename, :version
def initialize(mapping_directory)
@mappings = {}
@specials = []
@specials_length = 0
@version = nil
IO.foreach(File.join(mapping_directory, 'UnicodeData.txt'), mode: "rb") do |line|
next if line =~ /^</
code, _1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11, upper, lower, title = line.chomp.split ';'
unless upper and lower and title and (upper+lower+title)==''
@mappings[code] = MapItem.new(code, upper, lower, title)
end
end
@filename = File.join(mapping_directory, 'SpecialCasing.txt')
IO.foreach(@filename, mode: "rb") do |line|
@version ||= line[/-([0-9.]+).txt/, 1]
line.chomp!
line, comment = line.split(/ *#/)
next if not line or line == ''
code, lower, title, upper, conditions = line.split(/ *; */)
unless conditions
item = @mappings[code]
item.lower = lower
item.title = title
item.upper = upper
end
end
end
def map (from)
@mappings[from]
end
def flags(from, type, to)
# types: CaseFold_11, CaseUnfold_11, CaseUnfold_12, CaseUnfold_13
flags = ""
from = Array(from).map {|i| "%04X" % i}.join(" ")
to = Array(to).map {|i| "%04X" % i}.join(" ")
item = map(from)
specials = []
case type
when 'CaseFold_11'
flags += '|F'
if item
flags += '|U' if to==item.upper
flags += '|D' if to==item.lower
unless item.upper == item.title
if item.code == item.title
flags += '|IT'
swap = case item.code
when '01C5' then '0064 017D'
when '01C8' then '006C 004A'
when '01CB' then '006E 004A'
when '01F2' then '0064 005A'
else # Greek
to.split(' ').first + ' 0399'
end
specials << swap
else
flags += '|ST'
specials << item.title
end
end
unless item.lower.nil? or item.lower==from or item.lower==to
specials << item.lower
flags += '|SL'
end
unless item.upper.nil? or item.upper==from or item.upper==to
specials << item.upper
flags += '|SU'
end
end
when 'CaseUnfold_11'
to = to.split(/ /)
if item
case to.first
when item.upper then flags += '|U'
when item.lower then flags += '|D'
else
raise "Unpredicted case 0 in enc/unicode/case_folding.rb. Please contact https://bugs.ruby-lang.org/."
end
unless item.upper == item.title
if item.code == item.title
flags += '|IT' # was unpredicted case 1
elsif item.title==to[1]
flags += '|ST'
else
raise "Unpredicted case 2 in enc/unicode/case_folding.rb. Please contact https://bugs.ruby-lang.org/."
end
end
end
end
unless specials.empty?
flags += "|I(#{@specials_length})"
@specials_length += specials.map { |s| s.split(/ /).length }.reduce(:+)
@specials << specials
end
flags
end
def debug!
@debug = true
end
def specials_output
"static const OnigCodePoint CaseMappingSpecials[] = {\n" +
@specials.map do |sps|
' ' + sps.map do |sp|
chars = sp.split(/ /)
ct = ' /* ' + Array(chars).map{|c|[c.to_i(16)].pack("U*")}.join(", ") + ' */' if @debug
" L(#{chars.length})|#{chars.map {|c| "0x"+c }.join(', ')}#{ct},"
end.join + "\n"
end.join + "};\n"
end
def self.load(*args)
new(*args)
end
end
class CaseMappingDummy
def flags(from, type, to)
""
end
def titlecase_output() '' end
def debug!() end
end
if $0 == __FILE__
require 'optparse'
dest = nil
mapping_directory = nil
mapping_data = nil
debug = false
fold_1 = false
ARGV.options do |opt|
opt.banner << " [INPUT]"
opt.on("--output-file=FILE", "-o", "output to the FILE instead of STDOUT") {|output|
dest = (output unless output == '-')
}
opt.on('--mapping-data-directory=DIRECTORY', '-m', 'data DIRECTORY of mapping files') { |directory|
mapping_directory = directory
}
opt.on('--debug', '-d') {
debug = true
}
opt.parse!
abort(opt.to_s) if ARGV.size > 1
end
if mapping_directory
if ARGV[0]
warn "Either specify directory or individual file, but not both."
exit
end
filename = File.join(mapping_directory, 'CaseFolding.txt')
mapping_data = CaseMapping.load(mapping_directory)
end
filename ||= ARGV[0] || 'CaseFolding.txt'
data = CaseFolding.load(filename)
if mapping_data and data.version != mapping_data.version
abort "Unicode data version mismatch\n" \
" #{filename} = #{data.version}\n" \
" #{mapping_data.filename} = #{mapping_data.version}"
end
mapping_data ||= CaseMappingDummy.new
if debug
data.debug!
mapping_data.debug!
end
f = StringIO.new
begin
data.display(f, mapping_data)
rescue Errno::ENOENT => e
raise unless /gperf/ =~ e.message
warn e.message
abort unless dest
File.utime(nil, nil, dest) # assume existing file is OK
exit
else
s = f.string
end
if dest
open(dest, "wb") do |file|
file.print(s)
end
else
STDOUT.print(s)
end
end
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