FM / Locale

/usr/share/perl5/Locale

Name	Size	Mode	Actions
Maketext/	-	0755	rm
Constants.pm	924	0644	edit dl rm
Constants.pod	1351	0644	edit dl rm
Country.pm	13547	0644	edit dl rm
Country.pod	8472	0644	edit dl rm
Currency.pm	6421	0644	edit dl rm
Currency.pod	4465	0644	edit dl rm
Language.pm	4865	0644	edit dl rm
Language.pod	3568	0644	edit dl rm
Maketext.pm	15118	0644	edit dl rm
Maketext.pod	48474	0644	edit dl rm
Script.pm	7323	0644	edit dl rm
Script.pod	6148	0644	edit dl rm

Edit: /usr/share/perl5/Locale/Maketext.pm (15118B)

package Locale::Maketext;
use strict;
use vars qw( @ISA $VERSION $MATCH_SUPERS $USING_LANGUAGE_TAGS
$USE_LITERALS $MATCH_SUPERS_TIGHTLY);
use Carp ();
use I18N::LangTags 0.30 ();

#--------------------------------------------------------------------------

BEGIN { unless(defined &DEBUG) { *DEBUG = sub () {0} } }
# define the constant 'DEBUG' at compile-time

$VERSION = '1.13';
@ISA = ();

$MATCH_SUPERS = 1;
$MATCH_SUPERS_TIGHTLY = 1;
$USING_LANGUAGE_TAGS  = 1;
# Turning this off is somewhat of a security risk in that little or no
# checking will be done on the legality of tokens passed to the
# eval("use $module_name") in _try_use.  If you turn this off, you have
# to do your own taint checking.

$USE_LITERALS = 1 unless defined $USE_LITERALS;
# a hint for compiling bracket-notation things.

my %isa_scan = ();

###########################################################################

sub quant {
    my($handle, $num, @forms) = @_;

return $num if @forms == 0; # what should this mean?
    return $forms[2] if @forms > 2 and $num == 0; # special zeroth case

# Normal case:
    # Note that the formatting of $num is preserved.
    return( $handle->numf($num) . ' ' . $handle->numerate($num, @forms) );
    # Most human languages put the number phrase before the qualified phrase.
}

sub numerate {
    # return this lexical item in a form appropriate to this number
    my($handle, $num, @forms) = @_;
    my $s = ($num == 1);

return '' unless @forms;
    if(@forms == 1) { # only the headword form specified
        return $s ? $forms[0] : ($forms[0] . 's'); # very cheap hack.
    }
    else { # sing and plural were specified
        return $s ? $forms[0] : $forms[1];
    }
}

#--------------------------------------------------------------------------

sub numf {
    my($handle, $num) = @_[0,1];
    if($num < 10_000_000_000 and $num > -10_000_000_000 and $num == int($num)) {
        $num += 0;  # Just use normal integer stringification.
        # Specifically, don't let %G turn ten million into 1E+007
    }
    else {
        $num = CORE::sprintf('%G', $num);
        # "CORE::" is there to avoid confusion with the above sub sprintf.
    }
    while( $num =~ s/^([-+]?\d+)(\d{3})/$1,$2/s ) {1}  # right from perlfaq5
    # The initial \d+ gobbles as many digits as it can, and then we
    #  backtrack so it un-eats the rightmost three, and then we
    #  insert the comma there.

$num =~ tr<.,><,.> if ref($handle) and $handle->{'numf_comma'};
    # This is just a lame hack instead of using Number::Format
    return $num;
}

sub sprintf {
    no integer;
    my($handle, $format, @params) = @_;
    return CORE::sprintf($format, @params);
    # "CORE::" is there to avoid confusion with myself!
}

#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#

use integer; # vroom vroom... applies to the whole rest of the module

sub language_tag {
    my $it = ref($_[0]) || $_[0];
    return undef unless $it =~ m/([^':]+)(?:::)?$/s;
    $it = lc($1);
    $it =~ tr<_><->;
    return $it;
}

sub encoding {
    my $it = $_[0];
    return(
        (ref($it) && $it->{'encoding'})
        || 'iso-8859-1'   # Latin-1
    );
}

#--------------------------------------------------------------------------

sub fallback_languages { return('i-default', 'en', 'en-US') }

sub fallback_language_classes { return () }

#--------------------------------------------------------------------------

sub fail_with { # an actual attribute method!
    my($handle, @params) = @_;
    return unless ref($handle);
    $handle->{'fail'} = $params[0] if @params;
    return $handle->{'fail'};
}

#--------------------------------------------------------------------------

sub failure_handler_auto {
    # Meant to be used like:
    #  $handle->fail_with('failure_handler_auto')

my $handle = shift;
    my $phrase = shift;

$handle->{'failure_lex'} ||= {};
    my $lex = $handle->{'failure_lex'};

my $value;
    $lex->{$phrase} ||= ($value = $handle->_compile($phrase));

# Dumbly copied from sub maketext:
    return ${$value} if ref($value) eq 'SCALAR';
    return $value    if ref($value) ne 'CODE';
    {
        local $SIG{'__DIE__'};
        eval { $value = &$value($handle, @_) };
    }
    # If we make it here, there was an exception thrown in the
    #  call to $value, and so scream:
    if($@) {
        my $err = $@;
        # pretty up the error message
        $err =~ s{\s+at\s+$eval\s+\d+$\s+line\s+(\d+)\.?\n?}
                 {\n in bracket code [compiled line $1],}s;
        #$err =~ s/\n?$/\n/s;
        Carp::croak "Error in maketexting \"$phrase\":\n$err as used";
        # Rather unexpected, but suppose that the sub tried calling
        # a method that didn't exist.
    }
    else {
        return $value;
    }
}

#==========================================================================

sub new {
    # Nothing fancy!
    my $class = ref($_[0]) || $_[0];
    my $handle = bless {}, $class;
    $handle->init;
    return $handle;
}

sub init { return } # no-op

###########################################################################

sub maketext {
    # Remember, this can fail.  Failure is controllable many ways.
    Carp::croak 'maketext requires at least one parameter' unless @_ > 1;

my($handle, $phrase) = splice(@_,0,2);
    Carp::confess('No handle/phrase') unless (defined($handle) && defined($phrase));

# Don't interefere with $@ in case that's being interpolated into the msg.
    local $@;

# Look up the value:

my $value;
    foreach my $h_r (
        @{  $isa_scan{ref($handle) || $handle} || $handle->_lex_refs  }
    ) {
        DEBUG and warn "* Looking up \"$phrase\" in $h_r\n";
        if(exists $h_r->{$phrase}) {
            DEBUG and warn "  Found \"$phrase\" in $h_r\n";
            unless(ref($value = $h_r->{$phrase})) {
                # Nonref means it's not yet compiled.  Compile and replace.
                $value = $h_r->{$phrase} = $handle->_compile($value);
            }
            last;
        }
        elsif($phrase !~ m/^_/s and $h_r->{'_AUTO'}) {
            # it's an auto lex, and this is an autoable key!
            DEBUG and warn "  Automaking \"$phrase\" into $h_r\n";

$value = $h_r->{$phrase} = $handle->_compile($phrase);
            last;
        }
        DEBUG>1 and print "  Not found in $h_r, nor automakable\n";
        # else keep looking
    }

unless(defined($value)) {
        DEBUG and warn "! Lookup of \"$phrase\" in/under ", ref($handle) || $handle, " fails.\n";
        if(ref($handle) and $handle->{'fail'}) {
            DEBUG and warn "WARNING0: maketext fails looking for <$phrase>\n";
            my $fail;
            if(ref($fail = $handle->{'fail'}) eq 'CODE') { # it's a sub reference
                return &{$fail}($handle, $phrase, @_);
                # If it ever returns, it should return a good value.
            }
            else { # It's a method name
                return $handle->$fail($phrase, @_);
                # If it ever returns, it should return a good value.
            }
        }
        else {
            # All we know how to do is this;
            Carp::croak("maketext doesn't know how to say:\n$phrase\nas needed");
        }
    }

return $$value if ref($value) eq 'SCALAR';
    return $value unless ref($value) eq 'CODE';

{
        local $SIG{'__DIE__'};
        eval { $value = &$value($handle, @_) };
    }
    # If we make it here, there was an exception thrown in the
    #  call to $value, and so scream:
    if ($@) {
        my $err = $@;
        # pretty up the error message
        $err =~ s{\s+at\s+$eval\s+\d+$\s+line\s+(\d+)\.?\n?}
                 {\n in bracket code [compiled line $1],}s;
        #$err =~ s/\n?$/\n/s;
        Carp::croak "Error in maketexting \"$phrase\":\n$err as used";
        # Rather unexpected, but suppose that the sub tried calling
        # a method that didn't exist.
    }
    else {
        return $value;
    }
}

###########################################################################

sub get_handle {  # This is a constructor and, yes, it CAN FAIL.
    # Its class argument has to be the base class for the current
    # application's l10n files.

my($base_class, @languages) = @_;
    $base_class = ref($base_class) || $base_class;
    # Complain if they use __PACKAGE__ as a project base class?

if( @languages ) {
        DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
        if($USING_LANGUAGE_TAGS) {   # An explicit language-list was given!
            @languages =
            map {; $_, I18N::LangTags::alternate_language_tags($_) }
            # Catch alternation
            map I18N::LangTags::locale2language_tag($_),
            # If it's a lg tag, fine, pass thru (untainted)
            # If it's a locale ID, try converting to a lg tag (untainted),
            # otherwise nix it.
            @languages;
            DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
        }
    }
    else {
        @languages = $base_class->_ambient_langprefs;
    }

@languages = $base_class->_langtag_munging(@languages);

my %seen;
    foreach my $module_name ( map { $base_class . '::' . $_ }  @languages ) {
        next unless length $module_name; # sanity
        next if $seen{$module_name}++        # Already been here, and it was no-go
        || !&_try_use($module_name); # Try to use() it, but can't it.
        return($module_name->new); # Make it!
    }

return undef; # Fail!
}

###########################################################################

sub _langtag_munging {
    my($base_class, @languages) = @_;

# We have all these DEBUG statements because otherwise it's hard as hell
    # to diagnose ifwhen something goes wrong.

DEBUG and warn 'Lgs1: ', map("<$_>", @languages), "\n";

if($USING_LANGUAGE_TAGS) {
        DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
        @languages     = $base_class->_add_supers( @languages );

push @languages, I18N::LangTags::panic_languages(@languages);
        DEBUG and warn "After adding panic languages:\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";

push @languages, $base_class->fallback_languages;
        # You are free to override fallback_languages to return empty-list!
        DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";

@languages =  # final bit of processing to turn them into classname things
        map {
            my $it = $_;  # copy
            $it =~ tr<-A-Z><_a-z>; # lc, and turn - to _
            $it =~ tr<_a-z0-9><>cd;  # remove all but a-z0-9_
            $it;
        } @languages
        ;
        DEBUG and warn "Nearing end of munging:\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
    }
    else {
        DEBUG and warn "Bypassing language-tags.\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
    }

DEBUG and warn "Before adding fallback classes:\n",
    ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";

push @languages, $base_class->fallback_language_classes;
    # You are free to override that to return whatever.

DEBUG and warn "Finally:\n",
    ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";

return @languages;
}

###########################################################################

sub _ambient_langprefs {
    require I18N::LangTags::Detect;
    return  I18N::LangTags::Detect::detect();
}

###########################################################################

sub _add_supers {
    my($base_class, @languages) = @_;

if (!$MATCH_SUPERS) {
        # Nothing
        DEBUG and warn "Bypassing any super-matching.\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";

}
    elsif( $MATCH_SUPERS_TIGHTLY ) {
        DEBUG and warn "Before adding new supers tightly:\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
        @languages = I18N::LangTags::implicate_supers( @languages );
        DEBUG and warn "After adding new supers tightly:\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";

}
    else {
        DEBUG and warn "Before adding supers to end:\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
        @languages = I18N::LangTags::implicate_supers_strictly( @languages );
        DEBUG and warn "After adding supers to end:\n",
        ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
    }

return @languages;
}

###########################################################################
#
# This is where most people should stop reading.
#
###########################################################################

use Locale::Maketext::GutsLoader;

###########################################################################

my %tried = ();
# memoization of whether we've used this module, or found it unusable.

sub _try_use {   # Basically a wrapper around "require Modulename"
    # "Many men have tried..."  "They tried and failed?"  "They tried and died."
    return $tried{$_[0]} if exists $tried{$_[0]};  # memoization

my $module = $_[0];   # ASSUME sane module name!
    { no strict 'refs';
        return($tried{$module} = 1)
        if defined(%{$module . '::Lexicon'}) or defined(@{$module . '::ISA'});
        # weird case: we never use'd it, but there it is!
    }

DEBUG and warn " About to use $module ...\n";
    {
        local $SIG{'__DIE__'};
        eval "require $module"; # used to be "use $module", but no point in that.
    }
    if($@) {
        DEBUG and warn "Error using $module \: $@\n";
        return $tried{$module} = 0;
    }
    else {
        DEBUG and warn " OK, $module is used\n";
        return $tried{$module} = 1;
    }
}

#--------------------------------------------------------------------------

sub _lex_refs {  # report the lexicon references for this handle's class
    # returns an arrayREF!
    no strict 'refs';
    no warnings 'once';
    my $class = ref($_[0]) || $_[0];
    DEBUG and warn "Lex refs lookup on $class\n";
    return $isa_scan{$class} if exists $isa_scan{$class};  # memoization!

my @lex_refs;
    my $seen_r = ref($_[1]) ? $_[1] : {};

if( defined( *{$class . '::Lexicon'}{'HASH'} )) {
        push @lex_refs, *{$class . '::Lexicon'}{'HASH'};
        DEBUG and warn '%' . $class . '::Lexicon contains ',
            scalar(keys %{$class . '::Lexicon'}), " entries\n";
    }

# Implements depth(height?)-first recursive searching of superclasses.
    # In hindsight, I suppose I could have just used Class::ISA!
    foreach my $superclass (@{$class . '::ISA'}) {
        DEBUG and warn " Super-class search into $superclass\n";
        next if $seen_r->{$superclass}++;
        push @lex_refs, @{&_lex_refs($superclass, $seen_r)};  # call myself
    }

$isa_scan{$class} = \@lex_refs; # save for next time
    return \@lex_refs;
}

sub clear_isa_scan { %isa_scan = (); return; } # end on a note of simplicity!

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