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-rw-r--r--chromium/third_party/cygwin/lib/perl5/5.10/charnames.pm549
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diff --git a/chromium/third_party/cygwin/lib/perl5/5.10/charnames.pm b/chromium/third_party/cygwin/lib/perl5/5.10/charnames.pm
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--- a/chromium/third_party/cygwin/lib/perl5/5.10/charnames.pm
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@@ -1,549 +0,0 @@
-package charnames;
-use strict;
-use warnings;
-use File::Spec;
-our $VERSION = '1.06';
-
-use bytes (); # for $bytes::hint_bits
-
-my %alias1 = (
- # Icky 3.2 names with parentheses.
- 'LINE FEED' => 'LINE FEED (LF)',
- 'FORM FEED' => 'FORM FEED (FF)',
- 'CARRIAGE RETURN' => 'CARRIAGE RETURN (CR)',
- 'NEXT LINE' => 'NEXT LINE (NEL)',
- # Convenience.
- 'LF' => 'LINE FEED (LF)',
- 'FF' => 'FORM FEED (FF)',
- 'CR' => 'CARRIAGE RETURN (CR)',
- 'NEL' => 'NEXT LINE (NEL)',
- # More convenience. For futher convencience,
- # it is suggested some way using using the NamesList
- # aliases is implemented.
- 'ZWNJ' => 'ZERO WIDTH NON-JOINER',
- 'ZWJ' => 'ZERO WIDTH JOINER',
- 'BOM' => 'BYTE ORDER MARK',
- );
-
-my %alias2 = (
- # Pre-3.2 compatibility (only for the first 256 characters).
- 'HORIZONTAL TABULATION' => 'CHARACTER TABULATION',
- 'VERTICAL TABULATION' => 'LINE TABULATION',
- 'FILE SEPARATOR' => 'INFORMATION SEPARATOR FOUR',
- 'GROUP SEPARATOR' => 'INFORMATION SEPARATOR THREE',
- 'RECORD SEPARATOR' => 'INFORMATION SEPARATOR TWO',
- 'UNIT SEPARATOR' => 'INFORMATION SEPARATOR ONE',
- 'PARTIAL LINE DOWN' => 'PARTIAL LINE FORWARD',
- 'PARTIAL LINE UP' => 'PARTIAL LINE BACKWARD',
- );
-
-my %alias3 = (
- # User defined aliasses. Even more convenient :)
- );
-my $txt;
-
-sub croak
-{
- require Carp; goto &Carp::croak;
-} # croak
-
-sub carp
-{
- require Carp; goto &Carp::carp;
-} # carp
-
-sub alias (@)
-{
- @_ or return %alias3;
- my $alias = ref $_[0] ? $_[0] : { @_ };
- @alias3{keys %$alias} = values %$alias;
-} # alias
-
-sub alias_file ($)
-{
- my ($arg, $file) = @_;
- if (-f $arg && File::Spec->file_name_is_absolute ($arg)) {
- $file = $arg;
- }
- elsif ($arg =~ m/^\w+$/) {
- $file = "unicore/${arg}_alias.pl";
- }
- else {
- croak "Charnames alias files can only have identifier characters";
- }
- if (my @alias = do $file) {
- @alias == 1 && !defined $alias[0] and
- croak "$file cannot be used as alias file for charnames";
- @alias % 2 and
- croak "$file did not return a (valid) list of alias pairs";
- alias (@alias);
- return (1);
- }
- 0;
-} # alias_file
-
-# This is not optimized in any way yet
-sub charnames
-{
- my $name = shift;
-
- if (exists $alias1{$name}) {
- $name = $alias1{$name};
- }
- elsif (exists $alias2{$name}) {
- require warnings;
- warnings::warnif('deprecated', qq{Unicode character name "$name" is deprecated, use "$alias2{$name}" instead});
- $name = $alias2{$name};
- }
- elsif (exists $alias3{$name}) {
- $name = $alias3{$name};
- }
-
- my $ord;
- my @off;
- my $fname;
-
- if ($name eq "BYTE ORDER MARK") {
- $fname = $name;
- $ord = 0xFEFF;
- } else {
- ## Suck in the code/name list as a big string.
- ## Lines look like:
- ## "0052\t\tLATIN CAPITAL LETTER R\n"
- $txt = do "unicore/Name.pl" unless $txt;
-
- ## @off will hold the index into the code/name string of the start and
- ## end of the name as we find it.
-
- ## If :full, look for the name exactly
- if ($^H{charnames_full} and $txt =~ /\t\t\Q$name\E$/m) {
- @off = ($-[0], $+[0]);
- }
-
- ## If we didn't get above, and :short allowed, look for the short name.
- ## The short name is like "greek:Sigma"
- unless (@off) {
- if ($^H{charnames_short} and $name =~ /^(.+?):(.+)/s) {
- my ($script, $cname) = ($1, $2);
- my $case = $cname =~ /[[:upper:]]/ ? "CAPITAL" : "SMALL";
- if ($txt =~ m/\t\t\U$script\E (?:$case )?LETTER \U\Q$cname\E$/m) {
- @off = ($-[0], $+[0]);
- }
- }
- }
-
- ## If we still don't have it, check for the name among the loaded
- ## scripts.
- if (not @off) {
- my $case = $name =~ /[[:upper:]]/ ? "CAPITAL" : "SMALL";
- for my $script (@{$^H{charnames_scripts}}) {
- if ($txt =~ m/\t\t$script (?:$case )?LETTER \U\Q$name\E$/m) {
- @off = ($-[0], $+[0]);
- last;
- }
- }
- }
-
- ## If we don't have it by now, give up.
- unless (@off) {
- carp "Unknown charname '$name'";
- return "\x{FFFD}";
- }
-
- ##
- ## Now know where in the string the name starts.
- ## The code, in hex, is before that.
- ##
- ## The code can be 4-6 characters long, so we've got to sort of
- ## go look for it, just after the newline that comes before $off[0].
- ##
- ## This would be much easier if unicore/Name.pl had info in
- ## a name/code order, instead of code/name order.
- ##
- ## The +1 after the rindex() is to skip past the newline we're finding,
- ## or, if the rindex() fails, to put us to an offset of zero.
- ##
- my $hexstart = rindex($txt, "\n", $off[0]) + 1;
-
- ## we know where it starts, so turn into number -
- ## the ordinal for the char.
- $ord = CORE::hex substr($txt, $hexstart, $off[0] - $hexstart);
- }
-
- if ($^H & $bytes::hint_bits) { # "use bytes" in effect?
- use bytes;
- return chr $ord if $ord <= 255;
- my $hex = sprintf "%04x", $ord;
- if (not defined $fname) {
- $fname = substr $txt, $off[0] + 2, $off[1] - $off[0] - 2;
- }
- croak "Character 0x$hex with name '$fname' is above 0xFF";
- }
-
- no warnings 'utf8'; # allow even illegal characters
- return pack "U", $ord;
-} # charnames
-
-sub import
-{
- shift; ## ignore class name
-
- if (not @_) {
- carp("`use charnames' needs explicit imports list");
- }
- $^H{charnames} = \&charnames ;
-
- ##
- ## fill %h keys with our @_ args.
- ##
- my ($promote, %h, @args) = (0);
- while (my $arg = shift) {
- if ($arg eq ":alias") {
- @_ or
- croak ":alias needs an argument in charnames";
- my $alias = shift;
- if (ref $alias) {
- ref $alias eq "HASH" or
- croak "Only HASH reference supported as argument to :alias";
- alias ($alias);
- next;
- }
- if ($alias =~ m{:(\w+)$}) {
- $1 eq "full" || $1 eq "short" and
- croak ":alias cannot use existing pragma :$1 (reversed order?)";
- alias_file ($1) and $promote = 1;
- next;
- }
- alias_file ($alias);
- next;
- }
- if (substr($arg, 0, 1) eq ':' and ! ($arg eq ":full" || $arg eq ":short")) {
- warn "unsupported special '$arg' in charnames";
- next;
- }
- push @args, $arg;
- }
- @args == 0 && $promote and @args = (":full");
- @h{@args} = (1) x @args;
-
- $^H{charnames_full} = delete $h{':full'};
- $^H{charnames_short} = delete $h{':short'};
- $^H{charnames_scripts} = [map uc, keys %h];
-
- ##
- ## If utf8? warnings are enabled, and some scripts were given,
- ## see if at least we can find one letter of each script.
- ##
- if (warnings::enabled('utf8') && @{$^H{charnames_scripts}}) {
- $txt = do "unicore/Name.pl" unless $txt;
-
- for my $script (@{$^H{charnames_scripts}}) {
- if (not $txt =~ m/\t\t$script (?:CAPITAL |SMALL )?LETTER /) {
- warnings::warn('utf8', "No such script: '$script'");
- }
- }
- }
-} # import
-
-my %viacode;
-
-sub viacode
-{
- if (@_ != 1) {
- carp "charnames::viacode() expects one argument";
- return;
- }
-
- my $arg = shift;
-
- # this comes actually from Unicode::UCD, where it is the named
- # function _getcode (), but it avoids the overhead of loading it
- my $hex;
- if ($arg =~ /^[1-9]\d*$/) {
- $hex = sprintf "%04X", $arg;
- } elsif ($arg =~ /^(?:[Uu]\+|0[xX])?([[:xdigit:]]+)$/) {
- $hex = $1;
- } else {
- carp("unexpected arg \"$arg\" to charnames::viacode()");
- return;
- }
-
- # checking the length first is slightly faster
- if (length($hex) > 5 && hex($hex) > 0x10FFFF) {
- carp "Unicode characters only allocated up to U+10FFFF (you asked for U+$hex)";
- return;
- }
-
- return $viacode{$hex} if exists $viacode{$hex};
-
- $txt = do "unicore/Name.pl" unless $txt;
-
- return unless $txt =~ m/^$hex\t\t(.+)/m;
-
- $viacode{$hex} = $1;
-} # viacode
-
-my %vianame;
-
-sub vianame
-{
- if (@_ != 1) {
- carp "charnames::vianame() expects one name argument";
- return ()
- }
-
- my $arg = shift;
-
- return chr CORE::hex $1 if $arg =~ /^U\+([0-9a-fA-F]+)$/;
-
- return $vianame{$arg} if exists $vianame{$arg};
-
- $txt = do "unicore/Name.pl" unless $txt;
-
- my $pos = index $txt, "\t\t$arg\n";
- if ($[ <= $pos) {
- my $posLF = rindex $txt, "\n", $pos;
- (my $code = substr $txt, $posLF + 1, 6) =~ tr/\t//d;
- return $vianame{$arg} = CORE::hex $code;
-
- # If $pos is at the 1st line, $posLF must be $[ - 1 (not found);
- # then $posLF + 1 equals to $[ (at the beginning of $txt).
- # Otherwise $posLF is the position of "\n";
- # then $posLF + 1 must be the position of the next to "\n"
- # (the beginning of the line).
- # substr($txt, $posLF + 1, 6) may be "0000\t\t", "00A1\t\t",
- # "10300\t", "100000", etc. So we can get the code via removing TAB.
- } else {
- return;
- }
-} # vianame
-
-
-1;
-__END__
-
-=head1 NAME
-
-charnames - define character names for C<\N{named}> string literal escapes
-
-=head1 SYNOPSIS
-
- use charnames ':full';
- print "\N{GREEK SMALL LETTER SIGMA} is called sigma.\n";
-
- use charnames ':short';
- print "\N{greek:Sigma} is an upper-case sigma.\n";
-
- use charnames qw(cyrillic greek);
- print "\N{sigma} is Greek sigma, and \N{be} is Cyrillic b.\n";
-
- use charnames ":full", ":alias" => {
- e_ACUTE => "LATIN SMALL LETTER E WITH ACUTE",
- };
- print "\N{e_ACUTE} is a small letter e with an acute.\n";
-
- use charnames ();
- print charnames::viacode(0x1234); # prints "ETHIOPIC SYLLABLE SEE"
- printf "%04X", charnames::vianame("GOTHIC LETTER AHSA"); # prints "10330"
-
-=head1 DESCRIPTION
-
-Pragma C<use charnames> supports arguments C<:full>, C<:short>, script
-names and customized aliases. If C<:full> is present, for expansion of
-C<\N{CHARNAME}>, the string C<CHARNAME> is first looked up in the list of
-standard Unicode character names. If C<:short> is present, and
-C<CHARNAME> has the form C<SCRIPT:CNAME>, then C<CNAME> is looked up
-as a letter in script C<SCRIPT>. If pragma C<use charnames> is used
-with script name arguments, then for C<\N{CHARNAME}> the name
-C<CHARNAME> is looked up as a letter in the given scripts (in the
-specified order). Customized aliases are explained in L</CUSTOM ALIASES>.
-
-For lookup of C<CHARNAME> inside a given script C<SCRIPTNAME>
-this pragma looks for the names
-
- SCRIPTNAME CAPITAL LETTER CHARNAME
- SCRIPTNAME SMALL LETTER CHARNAME
- SCRIPTNAME LETTER CHARNAME
-
-in the table of standard Unicode names. If C<CHARNAME> is lowercase,
-then the C<CAPITAL> variant is ignored, otherwise the C<SMALL> variant
-is ignored.
-
-Note that C<\N{...}> is compile-time, it's a special form of string
-constant used inside double-quoted strings: in other words, you cannot
-use variables inside the C<\N{...}>. If you want similar run-time
-functionality, use charnames::vianame().
-
-For the C0 and C1 control characters (U+0000..U+001F, U+0080..U+009F)
-as of Unicode 3.1, there are no official Unicode names but you can use
-instead the ISO 6429 names (LINE FEED, ESCAPE, and so forth). In
-Unicode 3.2 (as of Perl 5.8) some naming changes take place ISO 6429
-has been updated, see L</ALIASES>. Also note that the U+UU80, U+0081,
-U+0084, and U+0099 do not have names even in ISO 6429.
-
-Since the Unicode standard uses "U+HHHH", so can you: "\N{U+263a}"
-is the Unicode smiley face, or "\N{WHITE SMILING FACE}".
-
-=head1 ALIASES
-
-A few aliases have been defined for convenience: instead of having
-to use the official names
-
- LINE FEED (LF)
- FORM FEED (FF)
- CARRIAGE RETURN (CR)
- NEXT LINE (NEL)
-
-(yes, with parentheses) one can use
-
- LINE FEED
- FORM FEED
- CARRIAGE RETURN
- NEXT LINE
- LF
- FF
- CR
- NEL
-
-One can also use
-
- BYTE ORDER MARK
- BOM
-
-and
-
- ZWNJ
- ZWJ
-
-for ZERO WIDTH NON-JOINER and ZERO WIDTH JOINER.
-
-For backward compatibility one can use the old names for
-certain C0 and C1 controls
-
- old new
-
- HORIZONTAL TABULATION CHARACTER TABULATION
- VERTICAL TABULATION LINE TABULATION
- FILE SEPARATOR INFORMATION SEPARATOR FOUR
- GROUP SEPARATOR INFORMATION SEPARATOR THREE
- RECORD SEPARATOR INFORMATION SEPARATOR TWO
- UNIT SEPARATOR INFORMATION SEPARATOR ONE
- PARTIAL LINE DOWN PARTIAL LINE FORWARD
- PARTIAL LINE UP PARTIAL LINE BACKWARD
-
-but the old names in addition to giving the character
-will also give a warning about being deprecated.
-
-=head1 CUSTOM ALIASES
-
-This version of charnames supports three mechanisms of adding local
-or customized aliases to standard Unicode naming conventions (:full)
-
-=head2 Anonymous hashes
-
- use charnames ":full", ":alias" => {
- e_ACUTE => "LATIN SMALL LETTER E WITH ACUTE",
- };
- my $str = "\N{e_ACUTE}";
-
-=head2 Alias file
-
- use charnames ":full", ":alias" => "pro";
-
- will try to read "unicore/pro_alias.pl" from the @INC path. This
- file should return a list in plain perl:
-
- (
- A_GRAVE => "LATIN CAPITAL LETTER A WITH GRAVE",
- A_CIRCUM => "LATIN CAPITAL LETTER A WITH CIRCUMFLEX",
- A_DIAERES => "LATIN CAPITAL LETTER A WITH DIAERESIS",
- A_TILDE => "LATIN CAPITAL LETTER A WITH TILDE",
- A_BREVE => "LATIN CAPITAL LETTER A WITH BREVE",
- A_RING => "LATIN CAPITAL LETTER A WITH RING ABOVE",
- A_MACRON => "LATIN CAPITAL LETTER A WITH MACRON",
- );
-
-=head2 Alias shortcut
-
- use charnames ":alias" => ":pro";
-
- works exactly the same as the alias pairs, only this time,
- ":full" is inserted automatically as first argument (if no
- other argument is given).
-
-=head1 charnames::viacode(code)
-
-Returns the full name of the character indicated by the numeric code.
-The example
-
- print charnames::viacode(0x2722);
-
-prints "FOUR TEARDROP-SPOKED ASTERISK".
-
-Returns undef if no name is known for the code.
-
-This works only for the standard names, and does not yet apply
-to custom translators.
-
-Notice that the name returned for of U+FEFF is "ZERO WIDTH NO-BREAK
-SPACE", not "BYTE ORDER MARK".
-
-=head1 charnames::vianame(name)
-
-Returns the code point indicated by the name.
-The example
-
- printf "%04X", charnames::vianame("FOUR TEARDROP-SPOKED ASTERISK");
-
-prints "2722".
-
-Returns undef if the name is unknown.
-
-This works only for the standard names, and does not yet apply
-to custom translators.
-
-=head1 CUSTOM TRANSLATORS
-
-The mechanism of translation of C<\N{...}> escapes is general and not
-hardwired into F<charnames.pm>. A module can install custom
-translations (inside the scope which C<use>s the module) with the
-following magic incantation:
-
- sub import {
- shift;
- $^H{charnames} = \&translator;
- }
-
-Here translator() is a subroutine which takes C<CHARNAME> as an
-argument, and returns text to insert into the string instead of the
-C<\N{CHARNAME}> escape. Since the text to insert should be different
-in C<bytes> mode and out of it, the function should check the current
-state of C<bytes>-flag as in:
-
- use bytes (); # for $bytes::hint_bits
- sub translator {
- if ($^H & $bytes::hint_bits) {
- return bytes_translator(@_);
- }
- else {
- return utf8_translator(@_);
- }
- }
-
-=head1 ILLEGAL CHARACTERS
-
-If you ask by name for a character that does not exist, a warning is
-given and the Unicode I<replacement character> "\x{FFFD}" is returned.
-
-If you ask by code for a character that does not exist, no warning is
-given and C<undef> is returned. (Though if you ask for a code point
-past U+10FFFF you do get a warning.)
-
-=head1 BUGS
-
-Since evaluation of the translation function happens in a middle of
-compilation (of a string literal), the translation function should not
-do any C<eval>s or C<require>s. This restriction should be lifted in
-a future version of Perl.
-
-=cut