package Locale::Codes;
# Copyright (C) 2001 Canon Research Centre Europe (CRE).
# Copyright (C) 2002-2009 Neil Bowers
# Copyright (c) 2010-2013 Sullivan Beck
# This program is free software; you can redistribute it and/or modify it
# under the same terms as Perl itself.
use strict;
require 5.006;
use warnings;
use Carp;
use Locale::Codes::Constants;
#=======================================================================
# Public Global Variables
#=======================================================================
# This module is not called directly... %Data is filled in by the
# calling modules.
our($VERSION,%Data,%Retired);
# $Data{ TYPE }{ code2id }{ CODESET } { CODE } = [ ID, I ]
# { id2code }{ CODESET } { ID } = CODE
# { id2names }{ ID } = [ NAME, NAME, ... ]
# { alias2id }{ NAME } = [ ID, I ]
# { id } = FIRST_UNUSED_ID
# { codealias }{ CODESET } { ALIAS } = CODE
#
# $Retired{ TYPE }{ CODESET }{ code }{ CODE } = NAME
# { name }{ NAME } = [CODE,NAME] (the key is lowercase)
$VERSION='3.26';
#=======================================================================
#
# _code ( TYPE,CODE,CODESET )
#
#=======================================================================
sub _code {
return 1 if (@_ > 3);
my($type,$code,$codeset) = @_;
$code = '' if (! $code);
# Determine the codeset
$codeset = $ALL_CODESETS{$type}{'default'}
if (! defined($codeset) || $codeset eq '');
$codeset = lc($codeset);
return 1 if (! exists $ALL_CODESETS{$type}{'codesets'}{$codeset});
return (0,$code,$codeset) if (! $code);
# Determine the properties of the codeset
my($op,@args) = @{ $ALL_CODESETS{$type}{'codesets'}{$codeset} };
if ($op eq 'lc') {
$code = lc($code);
} elsif ($op eq 'uc') {
$code = uc($code);
} elsif ($op eq 'ucfirst') {
$code = ucfirst(lc($code));
} elsif ($op eq 'numeric') {
return (1) unless ($code =~ /^\d+$/);
my $l = $args[0];
$code = sprintf("%.${l}d", $code);
}
return (0,$code,$codeset);
}
#=======================================================================
#
# _code2name ( TYPE,CODE [,CODESET] [,'retired'] )
#
#=======================================================================
sub _code2name {
my($type,@args) = @_;
my $retired = 0;
if (@args > 0 && $args[$#args] && $args[$#args] eq 'retired') {
pop(@args);
$retired = 1;
}
my($err,$code,$codeset) = _code($type,@args);
return undef if ($err ||
! defined $code);
$code = $Data{$type}{'codealias'}{$codeset}{$code}
if (exists $Data{$type}{'codealias'}{$codeset}{$code});
if (exists $Data{$type}{'code2id'}{$codeset} &&
exists $Data{$type}{'code2id'}{$codeset}{$code}) {
my ($id,$i) = @{ $Data{$type}{'code2id'}{$codeset}{$code} };
my $name = $Data{$type}{'id2names'}{$id}[$i];
return $name;
} elsif ($retired && exists $Retired{$type}{$codeset}{'code'}{$code}) {
return $Retired{$type}{$codeset}{'code'}{$code};
} else {
return undef;
}
}
#=======================================================================
#
# _name2code ( TYPE,NAME [,CODESET] [,'retired'] )
#
#=======================================================================
sub _name2code {
my($type,$name,@args) = @_;
return undef if (! $name);
$name = lc($name);
my $retired = 0;
if (@args > 0 && $args[$#args] && $args[$#args] eq 'retired') {
pop(@args);
$retired = 1;
}
my($err,$tmp,$codeset) = _code($type,'',@args);
return undef if ($err);
if (exists $Data{$type}{'alias2id'}{$name}) {
my $id = $Data{$type}{'alias2id'}{$name}[0];
if (exists $Data{$type}{'id2code'}{$codeset}{$id}) {
return $Data{$type}{'id2code'}{$codeset}{$id};
}
} elsif ($retired && exists $Retired{$type}{$codeset}{'name'}{$name}) {
return $Retired{$type}{$codeset}{'name'}{$name}[0];
}
return undef;
}
#=======================================================================
#
# _code2code ( TYPE,CODE,CODESET )
#
#=======================================================================
sub _code2code {
my($type,@args) = @_;
(@args == 3) or croak "${type}_code2code() takes 3 arguments!";
my($code,$inset,$outset) = @args;
my($err,$tmp);
($err,$code,$inset) = _code($type,$code,$inset);
return undef if ($err);
($err,$tmp,$outset) = _code($type,'',$outset);
return undef if ($err);
my $name = _code2name($type,$code,$inset);
my $outcode = _name2code($type,$name,$outset);
return $outcode;
}
#=======================================================================
#
# _all_codes ( TYPE [,CODESET] [,'retired'] )
#
#=======================================================================
sub _all_codes {
my($type,@args) = @_;
my $retired = 0;
if (@args > 0 && $args[$#args] && $args[$#args] eq 'retired') {
pop(@args);
$retired = 1;
}
my ($err,$tmp,$codeset) = _code($type,'',@args);
return () if ($err);
if (! exists $Data{$type}{'code2id'}{$codeset}) {
return ();
}
my @codes = keys %{ $Data{$type}{'code2id'}{$codeset} };
push(@codes,keys %{ $Retired{$type}{$codeset}{'code'} }) if ($retired);
return (sort @codes);
}
#=======================================================================
#
# _all_names ( TYPE [,CODESET] [,'retired'] )
#
#=======================================================================
sub _all_names {
my($type,@args) = @_;
my $retired = 0;
if (@args > 0 && $args[$#args] && $args[$#args] eq 'retired') {
pop(@args);
$retired = 1;
}
my ($err,$tmp,$codeset) = _code($type,'',@args);
return () if ($err);
my @codes = _all_codes($type,$codeset);
my @names;
foreach my $code (@codes) {
my($id,$i) = @{ $Data{$type}{'code2id'}{$codeset}{$code} };
my $name = $Data{$type}{'id2names'}{$id}[$i];
push(@names,$name);
}
if ($retired) {
foreach my $lc (keys %{ $Retired{$type}{$codeset}{'name'} }) {
my $name = $Retired{$type}{$codeset}{'name'}{$lc}[1];
push @names,$name;
}
}
return (sort @names);
}
#=======================================================================
#
# _rename ( TYPE,CODE,NAME,CODESET )
#
# Change the official name for a code. The original is retained
# as an alias, but the new name will be returned if you lookup the
# name from code.
#
#=======================================================================
sub _rename {
my($type,$code,$new_name,@args) = @_;
my $nowarn = 0;
$nowarn = 1, pop(@args) if (@args && $args[$#args] eq "nowarn");
my $codeset = shift(@args);
my $err;
($err,$code,$codeset) = _code($type,$code,$codeset);
if (! $codeset) {
carp "rename_$type(): unknown codeset\n" unless ($nowarn);
return 0;
}
$code = $Data{$type}{'codealias'}{$codeset}{$code}
if (exists $Data{$type}{'codealias'}{$codeset}{$code});
# Check that $code exists in the codeset.
my $id;
if (exists $Data{$type}{'code2id'}{$codeset}{$code}) {
$id = $Data{$type}{'code2id'}{$codeset}{$code}[0];
} else {
carp "rename_$type(): unknown code: $code\n" unless ($nowarn);
return 0;
}
# Cases:
# 1. Renaming to a name which exists with a different ID
# Error
#
# 2. Renaming to a name which exists with the same ID
# Just change code2id (I value)
#
# 3. Renaming to a new name
# Create a new alias
# Change code2id (I value)
if (exists $Data{$type}{'alias2id'}{lc($new_name)}) {
# Existing name (case 1 and 2)
my ($new_id,$i) = @{ $Data{$type}{'alias2id'}{lc($new_name)} };
if ($new_id != $id) {
# Case 1
carp "rename_$type(): rename to an existing $type not allowed\n"
unless ($nowarn);
return 0;
}
# Case 2
$Data{$type}{'code2id'}{$codeset}{$code}[1] = $i;
} else {
# Case 3
push @{ $Data{$type}{'id2names'}{$id} },$new_name;
my $i = $#{ $Data{$type}{'id2names'}{$id} };
$Data{$type}{'alias2id'}{lc($new_name)} = [ $id,$i ];
$Data{$type}{'code2id'}{$codeset}{$code}[1] = $i;
}
return 1;
}
#=======================================================================
#
# _add_code ( TYPE,CODE,NAME,CODESET )
#
# Add a new code to the codeset. Both CODE and NAME must be
# unused in the code set.
#
#=======================================================================
sub _add_code {
my($type,$code,$name,@args) = @_;
my $nowarn = 0;
$nowarn = 1, pop(@args) if (@args && $args[$#args] eq "nowarn");
my $codeset = shift(@args);
my $err;
($err,$code,$codeset) = _code($type,$code,$codeset);
if (! $codeset) {
carp "add_$type(): unknown codeset\n" unless ($nowarn);
return 0;
}
# Check that $code is unused.
if (exists $Data{$type}{'code2id'}{$codeset}{$code} ||
exists $Data{$type}{'codealias'}{$codeset}{$code}) {
carp "add_$type(): code already in use: $code\n" unless ($nowarn);
return 0;
}
# Check to see that $name is unused in this code set. If it is
# used (but not in this code set), we'll use that ID. Otherwise,
# we'll need to get the next available ID.
my ($id,$i);
if (exists $Data{$type}{'alias2id'}{lc($name)}) {
($id,$i) = @{ $Data{$type}{'alias2id'}{lc($name)} };
if (exists $Data{$type}{'id2code'}{$codeset}{$id}) {
carp "add_$type(): name already in use: $name\n" unless ($nowarn);
return 0;
}
} else {
$id = $Data{$type}{'id'}++;
$i = 0;
$Data{$type}{'alias2id'}{lc($name)} = [ $id,$i ];
$Data{$type}{'id2names'}{$id} = [ $name ];
}
# Add the new code
$Data{$type}{'code2id'}{$codeset}{$code} = [ $id,$i ];
$Data{$type}{'id2code'}{$codeset}{$id} = $code;
return 1;
}
#=======================================================================
#
# _delete_code ( TYPE,CODE,CODESET )
#
# Delete a code from the codeset.
#
#=======================================================================
sub _delete_code {
my($type,$code,@args) = @_;
my $nowarn = 0;
$nowarn = 1, pop(@args) if (@args && $args[$#args] eq "nowarn");
my $codeset = shift(@args);
my $err;
($err,$code,$codeset) = _code($type,$code,$codeset);
if (! $codeset) {
carp "delete_$type(): unknown codeset\n" unless ($nowarn);
return 0;
}
$code = $Data{$type}{'codealias'}{$codeset}{$code}
if (exists $Data{$type}{'codealias'}{$codeset}{$code});
# Check that $code is valid.
if (! exists $Data{$type}{'code2id'}{$codeset}{$code}) {
carp "delete_$type(): code does not exist: $code\n" unless ($nowarn);
return 0;
}
# Delete the code
my $id = $Data{$type}{'code2id'}{$codeset}{$code}[0];
delete $Data{$type}{'code2id'}{$codeset}{$code};
delete $Data{$type}{'id2code'}{$codeset}{$id};
# Delete any aliases that are linked to this code
foreach my $alias (keys %{ $Data{$type}{'codealias'}{$codeset} }) {
next if ($Data{$type}{'codealias'}{$codeset}{$alias} ne $code);
delete $Data{$type}{'codealias'}{$codeset}{$alias};
}
# If this ID is not used in any other codeset, delete it completely.
foreach my $c (keys %{ $Data{$type}{'id2code'} }) {
return 1 if (exists $Data{$type}{'id2code'}{$c}{$id});
}
my @names = @{ $Data{$type}{'id2names'}{$id} };
delete $Data{$type}{'id2names'}{$id};
foreach my $name (@names) {
delete $Data{$type}{'alias2id'}{lc($name)};
}
return 1;
}
#=======================================================================
#
# _add_alias ( TYPE,NAME,NEW_NAME )
#
# Add a new alias. NAME must exist, and NEW_NAME must be unused.
#
#=======================================================================
sub _add_alias {
my($type,$name,$new_name,$nowarn) = @_;
$nowarn = (defined($nowarn) && $nowarn eq "nowarn" ? 1 : 0);
# Check that $name is used and $new_name is new.
my($id);
if (exists $Data{$type}{'alias2id'}{lc($name)}) {
$id = $Data{$type}{'alias2id'}{lc($name)}[0];
} else {
carp "add_${type}_alias(): name does not exist: $name\n" unless ($nowarn);
return 0;
}
if (exists $Data{$type}{'alias2id'}{lc($new_name)}) {
carp "add_${type}_alias(): alias already in use: $new_name\n" unless ($nowarn);
return 0;
}
# Add the new alias
push @{ $Data{$type}{'id2names'}{$id} },$new_name;
my $i = $#{ $Data{$type}{'id2names'}{$id} };
$Data{$type}{'alias2id'}{lc($new_name)} = [ $id,$i ];
return 1;
}
#=======================================================================
#
# _delete_alias ( TYPE,NAME )
#
# This deletes a name from the list of names used by an element.
# NAME must be used, but must NOT be the only name in the list.
#
# Any id2name that references this name will be changed to
# refer to the first name in the list.
#
#=======================================================================
sub _delete_alias {
my($type,$name,$nowarn) = @_;
$nowarn = (defined($nowarn) && $nowarn eq "nowarn" ? 1 : 0);
# Check that $name is used.
my($id,$i);
if (exists $Data{$type}{'alias2id'}{lc($name)}) {
($id,$i) = @{ $Data{$type}{'alias2id'}{lc($name)} };
} else {
carp "delete_${type}_alias(): name does not exist: $name\n" unless ($nowarn);
return 0;
}
my $n = $#{ $Data{$type}{'id2names'}{$id} } + 1;
if ($n == 1) {
carp "delete_${type}_alias(): only one name defined (use _delete_${type} instead)\n"
unless ($nowarn);
return 0;
}
# Delete the alias.
splice (@{ $Data{$type}{'id2names'}{$id} },$i,1);
delete $Data{$type}{'alias2id'}{lc($name)};
# Every element that refers to this ID:
# Ignore if I < $i
# Set to 0 if I = $i
# Decrement if I > $i
foreach my $codeset (keys %{ $Data{'code2id'} }) {
foreach my $code (keys %{ $Data{'code2id'}{$codeset} }) {
my($jd,$j) = @{ $Data{'code2id'}{$codeset}{$code} };
next if ($jd ne $id ||
$j < $i);
if ($i == $j) {
$Data{'code2id'}{$codeset}{$code}[1] = 0;
} else {
$Data{'code2id'}{$codeset}{$code}[1]--;
}
}
}
return 1;
}
#=======================================================================
#
# _rename_code ( TYPE,CODE,NEW_CODE,CODESET )
#
# Change the official code. The original is retained as an alias, but
# the new name will be returned if you lookup the code from name.
#
#=======================================================================
sub _rename_code {
my($type,$code,$new_code,@args) = @_;
my $nowarn = 0;
$nowarn = 1, pop(@args) if (@args && $args[$#args] eq "nowarn");
my $codeset = shift(@args);
my $err;
($err,$code,$codeset) = _code($type,$code,$codeset);
($err,$new_code,$codeset) = _code($type,$new_code,$codeset)
if (! $err);
if (! $codeset) {
carp "rename_$type(): unknown codeset\n" unless ($nowarn);
return 0;
}
$code = $Data{$type}{'codealias'}{$codeset}{$code}
if (exists $Data{$type}{'codealias'}{$codeset}{$code});
# Check that $code exists in the codeset.
if (! exists $Data{$type}{'code2id'}{$codeset}{$code}) {
carp "rename_$type(): unknown code: $code\n" unless ($nowarn);
return 0;
}
# Cases:
# 1. Renaming code to an existing alias of this code:
# Make the alias real and the code an alias
#
# 2. Renaming code to some other existing alias:
# Error
#
# 3. Renaming code to some other code:
# Error (
#
# 4. Renaming code to a new code:
# Make code into an alias
# Replace code with new_code.
if (exists $Data{$type}{'codealias'}{$codeset}{$new_code}) {
# Cases 1 and 2
if ($Data{$type}{'codealias'}{$codeset}{$new_code} eq $code) {
# Case 1
delete $Data{$type}{'codealias'}{$codeset}{$new_code};
} else {
# Case 2
carp "rename_$type(): new code already in use: $new_code\n" unless ($nowarn);
return 0;
}
} elsif (exists $Data{$type}{'code2id'}{$codeset}{$new_code}) {
# Case 3
carp "rename_$type(): new code already in use: $new_code\n" unless ($nowarn);
return 0;
}
# Cases 1 and 4
$Data{$type}{'codealias'}{$codeset}{$code} = $new_code;
my $id = $Data{$type}{'code2id'}{$codeset}{$code}[0];
$Data{$type}{'code2id'}{$codeset}{$new_code} = $Data{$type}{'code2id'}{$codeset}{$code};
delete $Data{$type}{'code2id'}{$codeset}{$code};
$Data{$type}{'id2code'}{$codeset}{$id} = $new_code;
return 1;
}
#=======================================================================
#
# _add_code_alias ( TYPE,CODE,NEW_CODE,CODESET )
#
# Adds an alias for the code.
#
#=======================================================================
sub _add_code_alias {
my($type,$code,$new_code,@args) = @_;
my $nowarn = 0;
$nowarn = 1, pop(@args) if (@args && $args[$#args] eq "nowarn");
my $codeset = shift(@args);
my $err;
($err,$code,$codeset) = _code($type,$code,$codeset);
($err,$new_code,$codeset) = _code($type,$new_code,$codeset)
if (! $err);
if (! $codeset) {
carp "add_${type}_code_alias(): unknown codeset\n" unless ($nowarn);
return 0;
}
$code = $Data{$type}{'codealias'}{$codeset}{$code}
if (exists $Data{$type}{'codealias'}{$codeset}{$code});
# Check that $code exists in the codeset and that $new_code
# does not exist.
if (! exists $Data{$type}{'code2id'}{$codeset}{$code}) {
carp "add_${type}_code_alias(): unknown code: $code\n" unless ($nowarn);
return 0;
}
if (exists $Data{$type}{'code2id'}{$codeset}{$new_code} ||
exists $Data{$type}{'codealias'}{$codeset}{$new_code}) {
carp "add_${type}_code_alias(): code already in use: $new_code\n" unless ($nowarn);
return 0;
}
# Add the alias
$Data{$type}{'codealias'}{$codeset}{$new_code} = $code;
return 1;
}
#=======================================================================
#
# _delete_code_alias ( TYPE,CODE,CODESET )
#
# Deletes an alias for the code.
#
#=======================================================================
sub _delete_code_alias {
my($type,$code,@args) = @_;
my $nowarn = 0;
$nowarn = 1, pop(@args) if (@args && $args[$#args] eq "nowarn");
my $codeset = shift(@args);
my $err;
($err,$code,$codeset) = Locale::Codes::_code($type,$code,$codeset);
if (! $codeset) {
carp "delete_${type}_code_alias(): unknown codeset\n" unless ($nowarn);
return 0;
}
# Check that $code exists in the codeset as an alias.
if (! exists $Data{$type}{'codealias'}{$codeset}{$code}) {
carp "delete_${type}_code_alias(): no alias defined: $code\n" unless ($nowarn);
return 0;
}
# Delete the alias
delete $Data{$type}{'codealias'}{$codeset}{$code};
return 1;
}
1;
# Local Variables:
# mode: cperl
# indent-tabs-mode: nil
# cperl-indent-level: 3
# cperl-continued-statement-offset: 2
# cperl-continued-brace-offset: 0
# cperl-brace-offset: 0
# cperl-brace-imaginary-offset: 0
# cperl-label-offset: -2
# End: