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# $Id: UCD.pm,v 1.1.1.1 2003/06/04 00:27:53 marka Exp $
#
# Copyright (c) 2000,2001 Japan Network Information Center.
# All rights reserved.
#
# By using this file, you agree to the terms and conditions set forth bellow.
#
# LICENSE TERMS AND CONDITIONS
#
# The following License Terms and Conditions apply, unless a different
# license is obtained from Japan Network Information Center ("JPNIC"),
# a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
# Chiyoda-ku, Tokyo 101-0047, Japan.
#
# 1. Use, Modification and Redistribution (including distribution of any
# modified or derived work) in source and/or binary forms is permitted
# under this License Terms and Conditions.
#
# 2. Redistribution of source code must retain the copyright notices as they
# appear in each source code file, this License Terms and Conditions.
#
# 3. Redistribution in binary form must reproduce the Copyright Notice,
# this License Terms and Conditions, in the documentation and/or other
# materials provided with the distribution. For the purposes of binary
# distribution the "Copyright Notice" refers to the following language:
# "Copyright (c) 2000-2002 Japan Network Information Center. All rights reserved."
#
# 4. The name of JPNIC may not be used to endorse or promote products
# derived from this Software without specific prior written approval of
# JPNIC.
#
# 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JPNIC BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
#
package UCD;
#
# UCD.pm -- parser for Unicode Character Database files.
#
# This file is an aggregation of the following modules, each of which
# provides a parser for a specific data file of UCD.
# UCD::UnicodeData -- for UnicodeData.txt
# UCD::CaseFolding -- for CaseFolding.txt
# UCD::SpecialCasing -- for SpecialCasing.txt
# UCD::CompositionExclusions -- for CompositionExclusions-1.txt
#
# Each module provides two subroutines:
#
# $line = getline(\*HANDLE);
# reads next non-comment line from HANDLE, and returns it.
# undef will be returned upon EOF.
#
# %fields = parse($line);
# parses a line and extract fields, and returns a list of
# field name and its value, suitable for assignment to a hash.
#
package UCD::UnicodeData;
use strict;
use Carp;
sub getline {
my $fh = shift;
my $s = <$fh>;
$s =~ s/\r?\n$// if $s;
$s;
}
sub parseline {
my $s = shift;
my @f = split /;/, $s, -1;
return (CODE => hex($f[0]),
NAME => $f[1],
CATEGORY => $f[2],
CLASS => $f[3]+0,
BIDI => $f[4],
DECOMP => dcmap($f[5]),
DECIMAL => dvalue($f[6]),
DIGIT => dvalue($f[7]),
NUMERIC => dvalue($f[8]),
MIRRORED => $f[9] eq 'Y',
NAME10 => $f[10],
COMMENT => $f[11],
UPPER => ucode($f[12]),
LOWER => ucode($f[13]),
TITLE => ucode($f[14]));
}
sub dcmap {
my $v = shift;
return undef if $v eq '';
$v =~ /^(?:(<[^>]+>)\s*)?(\S.*)/
or croak "invalid decomposition mapping \"$v\"";
my $tag = $1 || '';
[$tag, map {hex($_)} split(' ', $2)];
}
sub ucode {
my $v = shift;
return undef if $v eq '';
hex($v);
}
sub dvalue {
my $v = shift;
return undef if $v eq '';
$v;
}
package UCD::CaseFolding;
use strict;
sub getline {
my $fh = shift;
while (defined(my $s = <$fh>)) {
next if $s =~ /^\#/;
next if $s =~ /^\s*$/;
$s =~ s/\r?\n$//;
return $s;
}
undef;
}
sub parseline {
my $s = shift;
my @f = split /;\s*/, $s, -1;
return (CODE => hex($f[0]),
TYPE => $f[1],
MAP => [map(hex, split ' ', $f[2])],
);
}
package UCD::SpecialCasing;
use strict;
sub getline {
my $fh = shift;
while (defined(my $s = <$fh>)) {
next if $s =~ /^\#/;
next if $s =~ /^\s*$/;
$s =~ s/\r?\n$//;
return $s;
}
undef;
}
sub parseline {
my $s = shift;
my @f = split /;\s*/, $s, -1;
my $cond = (@f > 5) ? $f[4] : undef;
return (CODE => hex($f[0]),
LOWER => [map(hex, split ' ', $f[1])],
TITLE => [map(hex, split ' ', $f[2])],
UPPER => [map(hex, split ' ', $f[3])],
CONDITION => $cond);
}
package UCD::CompositionExclusions;
use strict;
sub getline {
my $fh = shift;
while (defined(my $s = <$fh>)) {
next if $s =~ /^\#/;
next if $s =~ /^\s*$/;
$s =~ s/\r?\n$//;
return $s;
}
undef;
}
sub parseline {
my $s = shift;
m/^[0-9A-Fa-f]+/;
return (CODE => hex($&));
}
1;
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