Update transliteration support to Unicode 7.0.0.

The transliteration files are now autogenerated from upstream Unicode
data.

1 files changed, 502 insertions, 0 deletions

diff --git a/localedata/unicode-gen/unicode_utils.py b/localedata/unicode-gen/unicode_utils.py
new file mode 100644
index 0000000000..ee91582823
--- /dev/null
+++ b/localedata/unicode-gen/unicode_utils.py
@@ -0,0 +1,502 @@
+# Utilities to generate Unicode data for glibc from upstream Unicode data.
+#
+# Copyright (C) 2014, 2015 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+'''
+This module contains utilities used by the scripts to generate
+Unicode data for glibc from upstream Unicode data files.
+'''
+
+import sys
+import re
+
+# Dictionary holding the entire contents of the UnicodeData.txt file
+#
+# Contents of this dictionary look like this:
+#
+# {0: {'category': 'Cc',
+#      'title': None,
+#      'digit': '',
+#      'name': '<control>',
+#      'bidi': 'BN',
+#      'combining': '0',
+#      'comment': '',
+#      'oldname': 'NULL',
+#      'decomposition': '',
+#      'upper': None,
+#      'mirrored': 'N',
+#      'lower': None,
+#      'decdigit': '',
+#      'numeric': ''},
+#      …
+# }
+UNICODE_ATTRIBUTES = {}
+
+# Dictionary holding the entire contents of the DerivedCoreProperties.txt file
+#
+# Contents of this dictionary look like this:
+#
+# {917504: ['Default_Ignorable_Code_Point'],
+#  917505: ['Case_Ignorable', 'Default_Ignorable_Code_Point'],
+#  …
+# }
+DERIVED_CORE_PROPERTIES = {}
+
+# Dictionary holding the entire contents of the EastAsianWidths.txt file
+#
+# Contents of this dictionary look like this:
+#
+# {0: 'N', … , 45430: 'W', …}
+EAST_ASIAN_WIDTHS = {}
+
+def fill_attribute(code_point, fields):
+    '''Stores in UNICODE_ATTRIBUTES[code_point] the values from the fields.
+
+    One entry in the UNICODE_ATTRIBUTES dictionary represents one line
+    in the UnicodeData.txt file.
+
+    '''
+    UNICODE_ATTRIBUTES[code_point] =  {
+        'name': fields[1],          # Character name
+        'category': fields[2],      # General category
+        'combining': fields[3],     # Canonical combining classes
+        'bidi': fields[4],          # Bidirectional category
+        'decomposition': fields[5], # Character decomposition mapping
+        'decdigit': fields[6],      # Decimal digit value
+        'digit': fields[7],         # Digit value
+        'numeric': fields[8],       # Numeric value
+        'mirrored': fields[9],      # mirrored
+        'oldname': fields[10],      # Old Unicode 1.0 name
+        'comment': fields[11],      # comment
+        # Uppercase mapping
+        'upper': int(fields[12], 16) if fields[12] else None,
+        # Lowercase mapping
+        'lower': int(fields[13], 16) if fields[13] else None,
+        # Titlecase mapping
+        'title': int(fields[14], 16) if fields[14] else None,
+    }
+
+def fill_attributes(filename):
+    '''Stores the entire contents of the UnicodeData.txt file
+    in the UNICODE_ATTRIBUTES dictionary.
+
+    A typical line for a single code point in UnicodeData.txt looks
+    like this:
+
+    0041;LATIN CAPITAL LETTER A;Lu;0;L;;;;;N;;;;0061;
+
+    Code point ranges are indicated by pairs of lines like this:
+
+    4E00;<CJK Ideograph, First>;Lo;0;L;;;;;N;;;;;
+    9FCC;<CJK Ideograph, Last>;Lo;0;L;;;;;N;;;;;
+    '''
+    with open(filename, mode='r') as unicode_data_file:
+        fields_start = []
+        for line in unicode_data_file:
+            fields = line.strip().split(';')
+            if len(fields) != 15:
+                sys.stderr.write(
+                    'short line in file "%(f)s": %(l)s\n' %{
+                    'f': filename, 'l': line})
+                exit(1)
+            if fields[2] == 'Cs':
+                # Surrogates are UTF-16 artefacts,
+                # not real characters. Ignore them.
+                fields_start = []
+                continue
+            if fields[1].endswith(', First>'):
+                fields_start = fields
+                fields_start[1] = fields_start[1].split(',')[0][1:]
+                continue
+            if fields[1].endswith(', Last>'):
+                fields[1] = fields[1].split(',')[0][1:]
+                if fields[1:] != fields_start[1:]:
+                    sys.stderr.write(
+                        'broken code point range in file "%(f)s": %(l)s\n' %{
+                            'f': filename, 'l': line})
+                    exit(1)
+                for code_point in range(
+                        int(fields_start[0], 16),
+                        int(fields[0], 16)+1):
+                    fill_attribute(code_point, fields)
+                fields_start = []
+                continue
+            fill_attribute(int(fields[0], 16), fields)
+            fields_start = []
+
+def fill_derived_core_properties(filename):
+    '''Stores the entire contents of the DerivedCoreProperties.txt file
+    in the DERIVED_CORE_PROPERTIES dictionary.
+
+    Lines in DerivedCoreProperties.txt are either a code point range like
+    this:
+
+    0061..007A    ; Lowercase # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+
+    or a single code point like this:
+
+    00AA          ; Lowercase # Lo       FEMININE ORDINAL INDICATOR
+
+    '''
+    with open(filename, mode='r') as derived_core_properties_file:
+        for line in derived_core_properties_file:
+            match = re.match(
+                r'^(?P<codepoint1>[0-9A-F]{4,6})'
+                + r'(?:\.\.(?P<codepoint2>[0-9A-F]{4,6}))?'
+                + r'\s*;\s*(?P<property>[a-zA-Z_]+)',
+                line)
+            if not match:
+                continue
+            start = match.group('codepoint1')
+            end = match.group('codepoint2')
+            if not end:
+                end = start
+            for code_point in range(int(start, 16), int(end, 16)+1):
+                prop = match.group('property')
+                if code_point in DERIVED_CORE_PROPERTIES:
+                    DERIVED_CORE_PROPERTIES[code_point].append(prop)
+                else:
+                    DERIVED_CORE_PROPERTIES[code_point] = [prop]
+
+def fill_east_asian_widths(filename):
+    '''Stores the entire contents of the EastAsianWidths.txt file
+    in the EAST_ASIAN_WIDTHS dictionary.
+
+    Lines in EastAsianWidths.txt are either a code point range like
+    this:
+
+    9FCD..9FFF;W     # Cn    [51] <reserved-9FCD>..<reserved-9FFF>
+
+    or a single code point like this:
+
+    A015;W           # Lm         YI SYLLABLE WU
+    '''
+    with open(filename, mode='r') as east_asian_widths_file:
+        for line in east_asian_widths_file:
+            match = re.match(
+                r'^(?P<codepoint1>[0-9A-F]{4,6})'
+                +r'(?:\.\.(?P<codepoint2>[0-9A-F]{4,6}))?'
+                +r'\s*;\s*(?P<property>[a-zA-Z]+)',
+                line)
+            if not match:
+                continue
+            start = match.group('codepoint1')
+            end = match.group('codepoint2')
+            if not end:
+                end = start
+            for code_point in range(int(start, 16), int(end, 16)+1):
+                EAST_ASIAN_WIDTHS[code_point] = match.group('property')
+
+def to_upper(code_point):
+    '''Returns the code point of the uppercase version
+    of the given code point'''
+    if (UNICODE_ATTRIBUTES[code_point]['name']
+        and UNICODE_ATTRIBUTES[code_point]['upper']):
+        return UNICODE_ATTRIBUTES[code_point]['upper']
+    else:
+        return code_point
+
+def to_lower(code_point):
+    '''Returns the code point of the lowercase version
+    of the given code point'''
+    if (UNICODE_ATTRIBUTES[code_point]['name']
+        and UNICODE_ATTRIBUTES[code_point]['lower']):
+        return UNICODE_ATTRIBUTES[code_point]['lower']
+    else:
+        return code_point
+
+def to_title(code_point):
+    '''Returns the code point of the titlecase version
+    of the given code point'''
+    if (UNICODE_ATTRIBUTES[code_point]['name']
+        and UNICODE_ATTRIBUTES[code_point]['title']):
+        return UNICODE_ATTRIBUTES[code_point]['title']
+    else:
+        return code_point
+
+def is_upper(code_point):
+    '''Checks whether the character with this code point is uppercase'''
+    return (to_lower(code_point) != code_point
+            or (code_point in DERIVED_CORE_PROPERTIES
+                and 'Uppercase' in DERIVED_CORE_PROPERTIES[code_point]))
+
+def is_lower(code_point):
+    '''Checks whether the character with this code point is lowercase'''
+    # Some characters are defined as “Lowercase” in
+    # DerivedCoreProperties.txt but do not have a mapping to upper
+    # case. For example, ꜰ U+A72F “LATIN LETTER SMALL CAPITAL F” is
+    # one of these.
+    return (to_upper(code_point) != code_point
+            # <U00DF> is lowercase, but without simple to_upper mapping.
+            or code_point == 0x00DF
+            or (code_point in DERIVED_CORE_PROPERTIES
+                and 'Lowercase' in DERIVED_CORE_PROPERTIES[code_point]))
+
+def is_alpha(code_point):
+    '''Checks whether the character with this code point is alphabetic'''
+    return ((code_point in DERIVED_CORE_PROPERTIES
+             and
+             'Alphabetic' in DERIVED_CORE_PROPERTIES[code_point])
+            or
+            # Consider all the non-ASCII digits as alphabetic.
+            # ISO C 99 forbids us to have them in category “digit”,
+            # but we want iswalnum to return true on them.
+            (UNICODE_ATTRIBUTES[code_point]['category'] == 'Nd'
+             and not (code_point >= 0x0030 and code_point <= 0x0039)))
+
+def is_digit(code_point):
+    '''Checks whether the character with this code point is a digit'''
+    if False:
+        return (UNICODE_ATTRIBUTES[code_point]['name']
+                and UNICODE_ATTRIBUTES[code_point]['category'] == 'Nd')
+        # Note: U+0BE7..U+0BEF and U+1369..U+1371 are digit systems without
+        # a zero.  Must add <0> in front of them by hand.
+    else:
+        # SUSV2 gives us some freedom for the "digit" category, but ISO C 99
+        # takes it away:
+        # 7.25.2.1.5:
+        #    The iswdigit function tests for any wide character that
+        #    corresponds to a decimal-digit character (as defined in 5.2.1).
+        # 5.2.1:
+        #    the 10 decimal digits 0 1 2 3 4 5 6 7 8 9
+        return (code_point >= 0x0030 and code_point <= 0x0039)
+
+def is_outdigit(code_point):
+    '''Checks whether the character with this code point is outdigit'''
+    return (code_point >= 0x0030 and code_point <= 0x0039)
+
+def is_blank(code_point):
+    '''Checks whether the character with this code point is blank'''
+    return (code_point == 0x0009 # '\t'
+            # Category Zs without mention of '<noBreak>'
+            or (UNICODE_ATTRIBUTES[code_point]['name']
+                and UNICODE_ATTRIBUTES[code_point]['category'] == 'Zs'
+                and '<noBreak>' not in
+                UNICODE_ATTRIBUTES[code_point]['decomposition']))
+
+def is_space(code_point):
+    '''Checks whether the character with this code point is a space'''
+    # Don’t make U+00A0 a space. Non-breaking space means that all programs
+    # should treat it like a punctuation character, not like a space.
+    return (code_point == 0x0020 # ' '
+            or code_point == 0x000C # '\f'
+            or code_point == 0x000A # '\n'
+            or code_point == 0x000D # '\r'
+            or code_point == 0x0009 # '\t'
+            or code_point == 0x000B # '\v'
+            # Categories Zl, Zp, and Zs without mention of "<noBreak>"
+            or (UNICODE_ATTRIBUTES[code_point]['name']
+                and
+                (UNICODE_ATTRIBUTES[code_point]['category'] in ['Zl', 'Zp']
+                 or
+                 (UNICODE_ATTRIBUTES[code_point]['category'] in ['Zs']
+                  and
+                  '<noBreak>' not in
+                  UNICODE_ATTRIBUTES[code_point]['decomposition']))))
+
+def is_cntrl(code_point):
+    '''Checks whether the character with this code point is
+    a control character'''
+    return (UNICODE_ATTRIBUTES[code_point]['name']
+            and (UNICODE_ATTRIBUTES[code_point]['name'] == '<control>'
+                 or
+                 UNICODE_ATTRIBUTES[code_point]['category'] in ['Zl', 'Zp']))
+
+def is_xdigit(code_point):
+    '''Checks whether the character with this code point is
+    a hexadecimal digit'''
+    if False:
+        return (is_digit(code_point)
+                or (code_point >= 0x0041 and code_point <= 0x0046)
+                or (code_point >= 0x0061 and code_point <= 0x0066))
+    else:
+        # SUSV2 gives us some freedom for the "xdigit" category, but ISO C 99
+        # takes it away:
+        # 7.25.2.1.12:
+        #    The iswxdigit function tests for any wide character that
+        #    corresponds to a hexadecimal-digit character (as defined
+        #    in 6.4.4.1).
+        # 6.4.4.1:
+        #    hexadecimal-digit: one of
+        #    0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F
+        return ((code_point >= 0x0030 and code_point  <= 0x0039)
+                or (code_point >= 0x0041 and code_point <= 0x0046)
+                or (code_point >= 0x0061 and code_point <= 0x0066))
+
+def is_graph(code_point):
+    '''Checks whether the character with this code point is
+    a graphical character'''
+    return (UNICODE_ATTRIBUTES[code_point]['name']
+            and UNICODE_ATTRIBUTES[code_point]['name'] != '<control>'
+            and not is_space(code_point))
+
+def is_print(code_point):
+    '''Checks whether the character with this code point is printable'''
+    return (UNICODE_ATTRIBUTES[code_point]['name']
+            and UNICODE_ATTRIBUTES[code_point]['name'] != '<control>'
+            and UNICODE_ATTRIBUTES[code_point]['category'] not in ['Zl', 'Zp'])
+
+def is_punct(code_point):
+    '''Checks whether the character with this code point is punctuation'''
+    if False:
+        return (UNICODE_ATTRIBUTES[code_point]['name']
+                and UNICODE_ATTRIBUTES[code_point]['category'].startswith('P'))
+    else:
+        # The traditional POSIX definition of punctuation is every graphic,
+        # non-alphanumeric character.
+        return (is_graph(code_point)
+                and not is_alpha(code_point)
+                and not is_digit(code_point))
+
+def is_combining(code_point):
+    '''Checks whether the character with this code point is
+    a combining character'''
+    # Up to Unicode 3.0.1 we took the Combining property from the PropList.txt
+    # file. In 3.0.1 it was identical to the union of the general categories
+    # "Mn", "Mc", "Me". In Unicode 3.1 this property has been dropped from the
+    # PropList.txt file, so we take the latter definition.
+    return (UNICODE_ATTRIBUTES[code_point]['name']
+            and
+            UNICODE_ATTRIBUTES[code_point]['category'] in ['Mn', 'Mc', 'Me'])
+
+def is_combining_level3(code_point):
+    '''Checks whether the character with this code point is
+    a combining level3 character'''
+    return (is_combining(code_point)
+            and
+            int(UNICODE_ATTRIBUTES[code_point]['combining']) in range(0, 200))
+
+def ucs_symbol(code_point):
+    '''Return the UCS symbol string for a Unicode character.'''
+    if code_point < 0x10000:
+        return '<U{:04X}>'.format(code_point)
+    else:
+        return '<U{:08X}>'.format(code_point)
+
+def ucs_symbol_range(code_point_low, code_point_high):
+    '''Returns a string UCS symbol string for a code point range.
+
+    Example:
+
+    <U0041>..<U005A>
+    '''
+    return ucs_symbol(code_point_low) + '..' + ucs_symbol(code_point_high)
+
+def verifications():
+    '''Tests whether the is_* functions observe the known restrictions'''
+    for code_point in sorted(UNICODE_ATTRIBUTES):
+        # toupper restriction: "Only characters specified for the keywords
+        # lower and upper shall be specified.
+        if (to_upper(code_point) != code_point
+            and not (is_lower(code_point) or is_upper(code_point))):
+            sys.stderr.write(
+                ('%(sym)s is not upper|lower '
+                 + 'but toupper(0x%(c)04X) = 0x%(uc)04X\n') %{
+                    'sym': ucs_symbol(code_point),
+                    'c': code_point,
+                    'uc': to_upper(code_point)})
+        # tolower restriction: "Only characters specified for the keywords
+        # lower and upper shall be specified.
+        if (to_lower(code_point) != code_point
+            and not (is_lower(code_point) or is_upper(code_point))):
+            sys.stderr.write(
+                ('%(sym)s is not upper|lower '
+                 + 'but tolower(0x%(c)04X) = 0x%(uc)04X\n') %{
+                    'sym': ucs_symbol(code_point),
+                    'c': code_point,
+                    'uc': to_lower(code_point)})
+        # alpha restriction: "Characters classified as either upper or lower
+        # shall automatically belong to this class.
+        if ((is_lower(code_point) or is_upper(code_point))
+             and not is_alpha(code_point)):
+            sys.stderr.write('%(sym)s is upper|lower but not alpha\n' %{
+                'sym': ucs_symbol(code_point)})
+        # alpha restriction: “No character specified for the keywords cntrl,
+        # digit, punct or space shall be specified.”
+        if (is_alpha(code_point) and is_cntrl(code_point)):
+            sys.stderr.write('%(sym)s is alpha and cntrl\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_alpha(code_point) and is_digit(code_point)):
+            sys.stderr.write('%(sym)s is alpha and digit\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_alpha(code_point) and is_punct(code_point)):
+            sys.stderr.write('%(sym)s is alpha and punct\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_alpha(code_point) and is_space(code_point)):
+            sys.stderr.write('%(sym)s is alpha and space\n' %{
+                'sym': ucs_symbol(code_point)})
+        # space restriction: “No character specified for the keywords upper,
+        # lower, alpha, digit, graph or xdigit shall be specified.”
+        # upper, lower, alpha already checked above.
+        if (is_space(code_point) and is_digit(code_point)):
+            sys.stderr.write('%(sym)s is space and digit\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_space(code_point) and is_graph(code_point)):
+            sys.stderr.write('%(sym)s is space and graph\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_space(code_point) and is_xdigit(code_point)):
+            sys.stderr.write('%(sym)s is space and xdigit\n' %{
+                'sym': ucs_symbol(code_point)})
+        # cntrl restriction: “No character specified for the keywords upper,
+        # lower, alpha, digit, punct, graph, print or xdigit shall be
+        # specified.”  upper, lower, alpha already checked above.
+        if (is_cntrl(code_point) and is_digit(code_point)):
+            sys.stderr.write('%(sym)s is cntrl and digit\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_cntrl(code_point) and is_punct(code_point)):
+            sys.stderr.write('%(sym)s is cntrl and punct\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_cntrl(code_point) and is_graph(code_point)):
+            sys.stderr.write('%(sym)s is cntrl and graph\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_cntrl(code_point) and is_print(code_point)):
+            sys.stderr.write('%(sym)s is cntrl and print\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_cntrl(code_point) and is_xdigit(code_point)):
+            sys.stderr.write('%(sym)s is cntrl and xdigit\n' %{
+                'sym': ucs_symbol(code_point)})
+        # punct restriction: “No character specified for the keywords upper,
+        # lower, alpha, digit, cntrl, xdigit or as the <space> character shall
+        # be specified.”  upper, lower, alpha, cntrl already checked above.
+        if (is_punct(code_point) and is_digit(code_point)):
+            sys.stderr.write('%(sym)s is punct and digit\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_punct(code_point) and is_xdigit(code_point)):
+            sys.stderr.write('%(sym)s is punct and xdigit\n' %{
+                'sym': ucs_symbol(code_point)})
+        if (is_punct(code_point) and code_point == 0x0020):
+            sys.stderr.write('%(sym)s is punct\n' %{
+                'sym': ucs_symbol(code_point)})
+        # graph restriction: “No character specified for the keyword cntrl
+        # shall be specified.”  Already checked above.
+
+        # print restriction: “No character specified for the keyword cntrl
+        # shall be specified.”  Already checked above.
+
+        # graph - print relation: differ only in the <space> character.
+        # How is this possible if there are more than one space character?!
+        # I think susv2/xbd/locale.html should speak of “space characters”,
+        # not “space character”.
+        if (is_print(code_point)
+            and not (is_graph(code_point) or is_space(code_point))):
+            sys.stderr.write('%(sym)s is print but not graph|<space>\n' %{
+                'sym': unicode_utils.ucs_symbol(code_point)})
+        if (not is_print(code_point)
+            and (is_graph(code_point) or code_point == 0x0020)):
+            sys.stderr.write('%(sym)s is graph|<space> but not print\n' %{
+                'sym': unicode_utils.ucs_symbol(code_point)})