use strict;
use warnings;
-our $VERSION = '0.1';
+our $VERSION = '0.25';
+
+use Storable qw(dclone);
require Exporter;
our @ISA = qw(Exporter);
+
our @EXPORT_OK = qw(charinfo
charblock charscript
charblocks charscripts
charinrange
+ general_categories bidi_types
compexcl
- casefold casespec);
+ casefold casespec
+ namedseq);
use Carp;
my $charblock = charblock($codepoint);
use Unicode::UCD 'charscript';
- my $charscript = charblock($codepoint);
+ my $charscript = charscript($codepoint);
+
+ use Unicode::UCD 'charblocks';
+ my $charblocks = charblocks();
+
+ use Unicode::UCD 'charscripts';
+ my $charscripts = charscripts();
+
+ use Unicode::UCD qw(charscript charinrange);
+ my $range = charscript($script);
+ print "looks like $script\n" if charinrange($range, $codepoint);
+
+ use Unicode::UCD qw(general_categories bidi_types);
+ my $categories = general_categories();
+ my $types = bidi_types();
+
+ use Unicode::UCD 'compexcl';
+ my $compexcl = compexcl($codepoint);
+
+ use Unicode::UCD 'namedseq';
+ my $namedseq = namedseq($named_sequence_name);
+
+ my $unicode_version = Unicode::UCD::UnicodeVersion();
=head1 DESCRIPTION
-The Unicode module offers a simple interface to the Unicode Character
-Database.
+The Unicode::UCD module offers a simple interface to the Unicode
+Character Database.
=cut
my $COMPEXCLFH;
my $CASEFOLDFH;
my $CASESPECFH;
+my $NAMEDSEQFH;
sub openunicode {
my ($rfh, @path) = @_;
unless (defined $$rfh) {
for my $d (@INC) {
use File::Spec;
- $f = File::Spec->catfile($d, "unicode", @path);
+ $f = File::Spec->catfile($d, "unicore", @path);
last if open($$rfh, $f);
undef $f;
}
name name of the character IN UPPER CASE
category general category of the character
combining classes used in the Canonical Ordering Algorithm
- bidi bidirectional category
+ bidi bidirectional type
decomposition character decomposition mapping
decimal if decimal digit this is the integer numeric value
digit if digit this is the numeric value
title titlecase equivalent mapping
block block the character belongs to (used in \p{In...})
- script script the character belongs to
+ script script the character belongs to
If no match is found, a reference to an empty hash is returned.
-The C<block> property is the same as as returned by charinfo(). It is
+The C<block> property is the same as returned by charinfo(). It is
not defined in the Unicode Character Database proper (Chapter 4 of the
-Unicode 3.0 Standard) but instead in an auxiliary database (Chapter 14
-of TUS3). Similarly for the C<script> property.
+Unicode 3.0 Standard, aka TUS3) but instead in an auxiliary database
+(Chapter 14 of TUS3). Similarly for the C<script> property.
Note that you cannot do (de)composition and casing based solely on the
above C<decomposition> and C<lower>, C<upper>, C<title>, properties,
=cut
+# NB: This function is duplicated in charnames.pm
sub _getcode {
my $arg = shift;
- if ($arg =~ /^\d+$/) {
+ if ($arg =~ /^[1-9]\d*$/) {
return $arg;
- } elsif ($arg =~ /^(?:U\+|0x)?([[:xdigit:]]+)$/) {
+ } elsif ($arg =~ /^(?:[Uu]\+|0[xX])?([[:xdigit:]]+)$/) {
return hex($1);
}
return;
}
+# Lingua::KO::Hangul::Util not part of the standard distribution
+# but it will be used if available.
+
+eval { require Lingua::KO::Hangul::Util };
+my $hasHangulUtil = ! $@;
+if ($hasHangulUtil) {
+ Lingua::KO::Hangul::Util->import();
+}
+
+sub hangul_decomp { # internal: called from charinfo
+ if ($hasHangulUtil) {
+ my @tmp = decomposeHangul(shift);
+ return sprintf("%04X %04X", @tmp) if @tmp == 2;
+ return sprintf("%04X %04X %04X", @tmp) if @tmp == 3;
+ }
+ return;
+}
+
+sub hangul_charname { # internal: called from charinfo
+ return sprintf("HANGUL SYLLABLE-%04X", shift);
+}
+
+sub han_charname { # internal: called from charinfo
+ return sprintf("CJK UNIFIED IDEOGRAPH-%04X", shift);
+}
+
+my @CharinfoRanges = (
+# block name
+# [ first, last, coderef to name, coderef to decompose ],
+# CJK Ideographs Extension A
+ [ 0x3400, 0x4DB5, \&han_charname, undef ],
+# CJK Ideographs
+ [ 0x4E00, 0x9FA5, \&han_charname, undef ],
+# Hangul Syllables
+ [ 0xAC00, 0xD7A3, $hasHangulUtil ? \&getHangulName : \&hangul_charname, \&hangul_decomp ],
+# Non-Private Use High Surrogates
+ [ 0xD800, 0xDB7F, undef, undef ],
+# Private Use High Surrogates
+ [ 0xDB80, 0xDBFF, undef, undef ],
+# Low Surrogates
+ [ 0xDC00, 0xDFFF, undef, undef ],
+# The Private Use Area
+ [ 0xE000, 0xF8FF, undef, undef ],
+# CJK Ideographs Extension B
+ [ 0x20000, 0x2A6D6, \&han_charname, undef ],
+# Plane 15 Private Use Area
+ [ 0xF0000, 0xFFFFD, undef, undef ],
+# Plane 16 Private Use Area
+ [ 0x100000, 0x10FFFD, undef, undef ],
+);
+
sub charinfo {
my $arg = shift;
my $code = _getcode($arg);
croak __PACKAGE__, "::charinfo: unknown code '$arg'"
unless defined $code;
- my $hexk = sprintf("%04X", $code);
-
- openunicode(\$UNICODEFH, "Unicode.txt");
+ my $hexk = sprintf("%06X", $code);
+ my($rcode,$rname,$rdec);
+ foreach my $range (@CharinfoRanges){
+ if ($range->[0] <= $code && $code <= $range->[1]) {
+ $rcode = $hexk;
+ $rcode =~ s/^0+//;
+ $rcode = sprintf("%04X", hex($rcode));
+ $rname = $range->[2] ? $range->[2]->($code) : '';
+ $rdec = $range->[3] ? $range->[3]->($code) : '';
+ $hexk = sprintf("%06X", $range->[0]); # replace by the first
+ last;
+ }
+ }
+ openunicode(\$UNICODEFH, "UnicodeData.txt");
if (defined $UNICODEFH) {
- use Search::Dict;
- if (look($UNICODEFH, "$hexk;") >= 0) {
+ use Search::Dict 1.02;
+ if (look($UNICODEFH, "$hexk;", { xfrm => sub { $_[0] =~ /^([^;]+);(.+)/; sprintf "%06X;$2", hex($1) } } ) >= 0) {
my $line = <$UNICODEFH>;
+ return unless defined $line;
chomp $line;
my %prop;
@prop{qw(
mirrored unicode10 comment
upper lower title
)} = split(/;/, $line, -1);
+ $hexk =~ s/^0+//;
+ $hexk = sprintf("%04X", hex($hexk));
if ($prop{code} eq $hexk) {
$prop{block} = charblock($code);
$prop{script} = charscript($code);
+ if(defined $rname){
+ $prop{code} = $rcode;
+ $prop{name} = $rname;
+ $prop{decomposition} = $rdec;
+ }
return \%prop;
}
}
my $charblock = charblock("0x263a");
my $charblock = charblock("U+263a");
- my $ranges = charblock('Armenian');
+ my $range = charblock('Armenian');
-With a B<code point argument> charblock() returns the block the character
+With a B<code point argument> charblock() returns the I<block> the character
belongs to, e.g. C<Basic Latin>. Note that not all the character
positions within all blocks are defined.
-If supplied with an argument that can't be a code point, charblock()
-tries to do the opposite and interpret the argument as a character
-block. The return value is a I<range>: an anonymous list that
-contains anonymous lists, which in turn contain I<start-of-range>,
-I<end-of-range> code point pairs. You can test whether a code point
-is in a range using the L</charinrange> function. If the argument is
-not a known charater block, C<undef> is returned.
+See also L</Blocks versus Scripts>.
+
+If supplied with an argument that can't be a code point, charblock() tries
+to do the opposite and interpret the argument as a character block. The
+return value is a I<range>: an anonymous list of lists that contain
+I<start-of-range>, I<end-of-range> code point pairs. You can test whether
+a code point is in a range using the L</charinrange> function. If the
+argument is not a known character block, C<undef> is returned.
=cut
sub _charblocks {
unless (@BLOCKS) {
if (openunicode(\$BLOCKSFH, "Blocks.txt")) {
+ local $_;
while (<$BLOCKSFH>) {
if (/^([0-9A-F]+)\.\.([0-9A-F]+);\s+(.+)/) {
my ($lo, $hi) = (hex($1), hex($2));
_search(\@BLOCKS, 0, $#BLOCKS, $code);
} else {
if (exists $BLOCKS{$arg}) {
- return $BLOCKS{$arg};
+ return dclone $BLOCKS{$arg};
} else {
return;
}
my $charscript = charscript(1234);
my $charscript = charscript("U+263a");
- my $ranges = charscript('Thai');
+ my $range = charscript('Thai');
-With a B<code point argument> charscript() returns the script the
+With a B<code point argument> charscript() returns the I<script> the
character belongs to, e.g. C<Latin>, C<Greek>, C<Han>.
-If supplied with an argument that can't be a code point, charscript()
-tries to do the opposite and interpret the argument as a character
-script. The return value is a I<range>: an anonymous list that
-contains anonymous lists, which in turn contain I<start-of-range>,
-I<end-of-range> code point pairs. You can test whether a code point
-is in a range using the L</charinrange> function. If the argument is
-not a known charater script, C<undef> is returned.
+See also L</Blocks versus Scripts>.
+
+If supplied with an argument that can't be a code point, charscript() tries
+to do the opposite and interpret the argument as a character script. The
+return value is a I<range>: an anonymous list of lists that contain
+I<start-of-range>, I<end-of-range> code point pairs. You can test whether a
+code point is in a range using the L</charinrange> function. If the
+argument is not a known character script, C<undef> is returned.
=cut
sub _charscripts {
unless (@SCRIPTS) {
if (openunicode(\$SCRIPTSFH, "Scripts.txt")) {
+ local $_;
while (<$SCRIPTSFH>) {
if (/^([0-9A-F]+)(?:\.\.([0-9A-F]+))?\s+;\s+(\w+)/) {
my ($lo, $hi) = (hex($1), $2 ? hex($2) : hex($1));
_search(\@SCRIPTS, 0, $#SCRIPTS, $code);
} else {
if (exists $SCRIPTS{$arg}) {
- return $SCRIPTS{$arg};
+ return dclone $SCRIPTS{$arg};
} else {
return;
}
charblocks() returns a reference to a hash with the known block names
as the keys, and the code point ranges (see L</charblock>) as the values.
+See also L</Blocks versus Scripts>.
+
=cut
sub charblocks {
_charblocks() unless %BLOCKS;
- return \%BLOCKS;
+ return dclone \%BLOCKS;
}
=head2 charscripts
use Unicode::UCD 'charscripts';
- my %charscripts = charscripts();
+ my $charscripts = charscripts();
+
+charscripts() returns a reference to a hash with the known script
+names as the keys, and the code point ranges (see L</charscript>) as
+the values.
-charscripts() returns a hash with the known script names as the keys,
-and the code point ranges (see L</charscript>) as the values.
+See also L</Blocks versus Scripts>.
=cut
sub charscripts {
_charscripts() unless %SCRIPTS;
- return \%SCRIPTS;
+ return dclone \%SCRIPTS;
}
=head2 Blocks versus Scripts
The difference between a block and a script is that scripts are closer
to the linguistic notion of a set of characters required to present
languages, while block is more of an artifact of the Unicode character
-numbering and separation into blocks of 256 characters.
+numbering and separation into blocks of (mostly) 256 characters.
For example the Latin B<script> is spread over several B<blocks>, such
as C<Basic Latin>, C<Latin 1 Supplement>, C<Latin Extended-A>, and
C<Latin Extended-B>. On the other hand, the Latin script does not
contain all the characters of the C<Basic Latin> block (also known as
-the ASCII): it includes only the letters, not for example the digits
+the ASCII): it includes only the letters, and not, for example, the digits
or the punctuation.
For blocks see http://www.unicode.org/Public/UNIDATA/Blocks.txt
=head2 Matching Scripts and Blocks
-Both scripts and blocks can be matched using the regular expression
-construct C<\p{In...}> and its negation C<\P{In...}>.
-
-The name of the script or the block comes after the C<In>, for example
-C<\p{InCyrillic}>, C<\P{InBasicLatin}>. Spaces and dashes ('-') are
-removed from the names for the C<\p{In...}>, for example
-C<LatinExtendedA> instead of C<Latin Extended-A>.
-
-There are a few cases where there exists both a script and a block by
-the same name, in these cases the block version has C<Block> appended:
-C<\p{InKatakana}> is the script, C<\p{InKatakanaBlock}> is the block.
+Scripts are matched with the regular-expression construct
+C<\p{...}> (e.g. C<\p{Tibetan}> matches characters of the Tibetan script),
+while C<\p{In...}> is used for blocks (e.g. C<\p{InTibetan}> matches
+any of the 256 code points in the Tibetan block).
=head2 Code Point Arguments
-A <code point argument> is either a decimal or a hexadecimal scalar,
-or "U+" followed by hexadecimals.
+A I<code point argument> is either a decimal or a hexadecimal scalar
+designating a Unicode character, or C<U+> followed by hexadecimals
+designating a Unicode character. In other words, if you want a code
+point to be interpreted as a hexadecimal number, you must prefix it
+with either C<0x> or C<U+>, because a string like e.g. C<123> will
+be interpreted as a decimal code point. Also note that Unicode is
+B<not> limited to 16 bits (the number of Unicode characters is
+open-ended, in theory unlimited): you may have more than 4 hexdigits.
=head2 charinrange
In addition to using the C<\p{In...}> and C<\P{In...}> constructs, you
can also test whether a code point is in the I<range> as returned by
L</charblock> and L</charscript> or as the values of the hash returned
-by L</charblocks> and </charscripts> by using charinrange():
+by L</charblocks> and L</charscripts> by using charinrange():
use Unicode::UCD qw(charscript charinrange);
$range = charscript('Hiragana');
- print "looks like hiragana\n" if charinrange($range, $code);
+ print "looks like hiragana\n" if charinrange($range, $codepoint);
+
+=cut
+
+my %GENERAL_CATEGORIES =
+ (
+ 'L' => 'Letter',
+ 'LC' => 'CasedLetter',
+ 'Lu' => 'UppercaseLetter',
+ 'Ll' => 'LowercaseLetter',
+ 'Lt' => 'TitlecaseLetter',
+ 'Lm' => 'ModifierLetter',
+ 'Lo' => 'OtherLetter',
+ 'M' => 'Mark',
+ 'Mn' => 'NonspacingMark',
+ 'Mc' => 'SpacingMark',
+ 'Me' => 'EnclosingMark',
+ 'N' => 'Number',
+ 'Nd' => 'DecimalNumber',
+ 'Nl' => 'LetterNumber',
+ 'No' => 'OtherNumber',
+ 'P' => 'Punctuation',
+ 'Pc' => 'ConnectorPunctuation',
+ 'Pd' => 'DashPunctuation',
+ 'Ps' => 'OpenPunctuation',
+ 'Pe' => 'ClosePunctuation',
+ 'Pi' => 'InitialPunctuation',
+ 'Pf' => 'FinalPunctuation',
+ 'Po' => 'OtherPunctuation',
+ 'S' => 'Symbol',
+ 'Sm' => 'MathSymbol',
+ 'Sc' => 'CurrencySymbol',
+ 'Sk' => 'ModifierSymbol',
+ 'So' => 'OtherSymbol',
+ 'Z' => 'Separator',
+ 'Zs' => 'SpaceSeparator',
+ 'Zl' => 'LineSeparator',
+ 'Zp' => 'ParagraphSeparator',
+ 'C' => 'Other',
+ 'Cc' => 'Control',
+ 'Cf' => 'Format',
+ 'Cs' => 'Surrogate',
+ 'Co' => 'PrivateUse',
+ 'Cn' => 'Unassigned',
+ );
+
+sub general_categories {
+ return dclone \%GENERAL_CATEGORIES;
+}
+
+=head2 general_categories
+
+ use Unicode::UCD 'general_categories';
+
+ my $categories = general_categories();
+
+The general_categories() returns a reference to a hash which has short
+general category names (such as C<Lu>, C<Nd>, C<Zs>, C<S>) as keys and long
+names (such as C<UppercaseLetter>, C<DecimalNumber>, C<SpaceSeparator>,
+C<Symbol>) as values. The hash is reversible in case you need to go
+from the long names to the short names. The general category is the
+one returned from charinfo() under the C<category> key.
+
+=cut
+
+my %BIDI_TYPES =
+ (
+ 'L' => 'Left-to-Right',
+ 'LRE' => 'Left-to-Right Embedding',
+ 'LRO' => 'Left-to-Right Override',
+ 'R' => 'Right-to-Left',
+ 'AL' => 'Right-to-Left Arabic',
+ 'RLE' => 'Right-to-Left Embedding',
+ 'RLO' => 'Right-to-Left Override',
+ 'PDF' => 'Pop Directional Format',
+ 'EN' => 'European Number',
+ 'ES' => 'European Number Separator',
+ 'ET' => 'European Number Terminator',
+ 'AN' => 'Arabic Number',
+ 'CS' => 'Common Number Separator',
+ 'NSM' => 'Non-Spacing Mark',
+ 'BN' => 'Boundary Neutral',
+ 'B' => 'Paragraph Separator',
+ 'S' => 'Segment Separator',
+ 'WS' => 'Whitespace',
+ 'ON' => 'Other Neutrals',
+ );
+
+sub bidi_types {
+ return dclone \%BIDI_TYPES;
+}
+
+=head2 bidi_types
+
+ use Unicode::UCD 'bidi_types';
+
+ my $categories = bidi_types();
+
+The bidi_types() returns a reference to a hash which has the short
+bidi (bidirectional) type names (such as C<L>, C<R>) as keys and long
+names (such as C<Left-to-Right>, C<Right-to-Left>) as values. The
+hash is reversible in case you need to go from the long names to the
+short names. The bidi type is the one returned from charinfo()
+under the C<bidi> key. For the exact meaning of the various bidi classes
+the Unicode TR9 is recommended reading:
+http://www.unicode.org/reports/tr9/tr9-17.html
+(as of Unicode 5.0.0)
=cut
my $compexcl = compexcl("09dc");
The compexcl() returns the composition exclusion (that is, if the
-character cannot be decomposed) of the character specified by a B<code
-point argument>.
+character should not be produced during a precomposition) of the
+character specified by a B<code point argument>.
If there is a composition exclusion for the character, true is
returned. Otherwise, false is returned.
sub _compexcl {
unless (%COMPEXCL) {
- if (openunicode(\$COMPEXCLFH, "CompExcl.txt")) {
+ if (openunicode(\$COMPEXCLFH, "CompositionExclusions.txt")) {
+ local $_;
while (<$COMPEXCLFH>) {
- if (/^([0-9A-F]+) \# /) {
+ if (/^([0-9A-F]+)\s+\#\s+/) {
my $code = hex($1);
$COMPEXCL{$code} = undef;
}
sub compexcl {
my $arg = shift;
my $code = _getcode($arg);
+ croak __PACKAGE__, "::compexcl: unknown code '$arg'"
+ unless defined $code;
_compexcl() unless %COMPEXCL;
use Unicode::UCD 'casefold';
- my %casefold = casefold("09dc");
+ my $casefold = casefold("00DF");
The casefold() returns the locale-independent case folding of the
character specified by a B<code point argument>.
sub _casefold {
unless (%CASEFOLD) {
- if (openunicode(\$CASEFOLDFH, "CaseFold.txt")) {
+ if (openunicode(\$CASEFOLDFH, "CaseFolding.txt")) {
+ local $_;
while (<$CASEFOLDFH>) {
if (/^([0-9A-F]+); ([CFSI]); ([0-9A-F]+(?: [0-9A-F]+)*);/) {
my $code = hex($1);
sub casefold {
my $arg = shift;
my $code = _getcode($arg);
+ croak __PACKAGE__, "::casefold: unknown code '$arg'"
+ unless defined $code;
_casefold() unless %CASEFOLD;
use Unicode::UCD 'casespec';
- my %casespec = casespec("09dc");
+ my $casespec = casespec("FB00");
The casespec() returns the potentially locale-dependent case mapping
of the character specified by a B<code point argument>. The mapping
used to separate elements, spaces are to be ignored). A condition
list overrides the normal behavior if all of the listed conditions are
true. Case distinctions in the condition list are not significant.
-Conditions preceded by "NON_" represent the negation of the condition
+Conditions preceded by "NON_" represent the negation of the condition.
+
+Note that when there are multiple case folding definitions for a
+single code point because of different locales, the value returned by
+casespec() is a hash reference which has the locales as the keys and
+hash references as described above as the values.
A I<locale> is defined as a 2-letter ISO 3166 country code, possibly
-followed by a "_" and a 2-letter ISO language code (, possibly followed
-by a "_" and a variant code). You can find the list of those codes
-in L<Locale::Country> and L<Locale::Language>.
+followed by a "_" and a 2-letter ISO language code (possibly followed
+by a "_" and a variant code). You can find the lists of those codes,
+see L<Locale::Country> and L<Locale::Language>.
A I<context> is one of the following choices:
FINAL The letter is not followed by a letter of
general category L (e.g. Ll, Lt, Lu, Lm, or Lo)
MODERN The mapping is only used for modern text
- AFTER_i The last base character was "i" 0069
+ AFTER_i The last base character was "i" (U+0069)
For more information about case mappings see
http://www.unicode.org/unicode/reports/tr21/
sub _casespec {
unless (%CASESPEC) {
- if (openunicode(\$CASESPECFH, "SpecCase.txt")) {
+ if (openunicode(\$CASESPECFH, "SpecialCasing.txt")) {
+ local $_;
while (<$CASESPECFH>) {
if (/^([0-9A-F]+); ([0-9A-F]+(?: [0-9A-F]+)*)?; ([0-9A-F]+(?: [0-9A-F]+)*)?; ([0-9A-F]+(?: [0-9A-F]+)*)?; (\w+(?: \w+)*)?/) {
- my $code = hex($1);
- $CASESPEC{$code} = { code => $1,
- lower => $2,
- title => $3,
- upper => $4,
- condition => $5 };
+ my ($hexcode, $lower, $title, $upper, $condition) =
+ ($1, $2, $3, $4, $5);
+ my $code = hex($hexcode);
+ if (exists $CASESPEC{$code}) {
+ if (exists $CASESPEC{$code}->{code}) {
+ my ($oldlower,
+ $oldtitle,
+ $oldupper,
+ $oldcondition) =
+ @{$CASESPEC{$code}}{qw(lower
+ title
+ upper
+ condition)};
+ if (defined $oldcondition) {
+ my ($oldlocale) =
+ ($oldcondition =~ /^([a-z][a-z](?:_\S+)?)/);
+ delete $CASESPEC{$code};
+ $CASESPEC{$code}->{$oldlocale} =
+ { code => $hexcode,
+ lower => $oldlower,
+ title => $oldtitle,
+ upper => $oldupper,
+ condition => $oldcondition };
+ }
+ }
+ my ($locale) =
+ ($condition =~ /^([a-z][a-z](?:_\S+)?)/);
+ $CASESPEC{$code}->{$locale} =
+ { code => $hexcode,
+ lower => $lower,
+ title => $title,
+ upper => $upper,
+ condition => $condition };
+ } else {
+ $CASESPEC{$code} =
+ { code => $hexcode,
+ lower => $lower,
+ title => $title,
+ upper => $upper,
+ condition => $condition };
+ }
}
}
close($CASESPECFH);
sub casespec {
my $arg = shift;
my $code = _getcode($arg);
+ croak __PACKAGE__, "::casespec: unknown code '$arg'"
+ unless defined $code;
_casespec() unless %CASESPEC;
- return $CASESPEC{$code};
+ return ref $CASESPEC{$code} ? dclone $CASESPEC{$code} : $CASESPEC{$code};
+}
+
+=head2 namedseq()
+
+ use Unicode::UCD 'namedseq';
+
+ my $namedseq = namedseq("KATAKANA LETTER AINU P");
+ my @namedseq = namedseq("KATAKANA LETTER AINU P");
+ my %namedseq = namedseq();
+
+If used with a single argument in a scalar context, returns the string
+consisting of the code points of the named sequence, or C<undef> if no
+named sequence by that name exists. If used with a single argument in
+a list context, returns list of the code points. If used with no
+arguments in a list context, returns a hash with the names of the
+named sequences as the keys and the named sequences as strings as
+the values. Otherwise, returns C<undef> or empty list depending
+on the context.
+
+(New from Unicode 4.1.0)
+
+=cut
+
+my %NAMEDSEQ;
+
+sub _namedseq {
+ unless (%NAMEDSEQ) {
+ if (openunicode(\$NAMEDSEQFH, "NamedSequences.txt")) {
+ local $_;
+ while (<$NAMEDSEQFH>) {
+ if (/^(.+)\s*;\s*([0-9A-F]+(?: [0-9A-F]+)*)$/) {
+ my ($n, $s) = ($1, $2);
+ my @s = map { chr(hex($_)) } split(' ', $s);
+ $NAMEDSEQ{$n} = join("", @s);
+ }
+ }
+ close($NAMEDSEQFH);
+ }
+ }
+}
+
+sub namedseq {
+ _namedseq() unless %NAMEDSEQ;
+ my $wantarray = wantarray();
+ if (defined $wantarray) {
+ if ($wantarray) {
+ if (@_ == 0) {
+ return %NAMEDSEQ;
+ } elsif (@_ == 1) {
+ my $s = $NAMEDSEQ{ $_[0] };
+ return defined $s ? map { ord($_) } split('', $s) : ();
+ }
+ } elsif (@_ == 1) {
+ return $NAMEDSEQ{ $_[0] };
+ }
+ }
+ return;
}
=head2 Unicode::UCD::UnicodeVersion
-Unicode::UCD::UnicodeVersion() returns the version of the Unicode Character
-Database, in other words, the version of the Unicode standard the
-database implements.
+Unicode::UCD::UnicodeVersion() returns the version of the Unicode
+Character Database, in other words, the version of the Unicode
+standard the database implements. The version is a string
+of numbers delimited by dots (C<'.'>).
=cut
The first use of charinfo() opens a read-only filehandle to the Unicode
Character Database (the database is included in the Perl distribution).
-The filehandle is then kept open for further queries.
+The filehandle is then kept open for further queries. In other words,
+if you are wondering where one of your filehandles went, that's where.
+
+=head1 BUGS
+
+Does not yet support EBCDIC platforms.
=head1 AUTHOR
projects / p5sagit/p5-mst-13.2.git / blobdiff