1#! /usr/local/bin/perl
2#
3# $FreeBSD$
4#
5# This file and its contents are supplied under the terms of the
6# Common Development and Distribution License ("CDDL"), version 1.0.
7# You may only use this file in accordance with the terms of version
8# 1.0 of the CDDL.
9#
10# A full copy of the text of the CDDL should have accompanied this
11# source.  A copy is of the CDDL is also available via the Internet
12# at http://www.illumos.org/license/CDDL.
13#
14
15#
16# Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
17# Copyright 2015 John Marino <draco@marino.st>
18#
19
20# This converts MAPPING files to localedef character maps
21# suitable for use with the UTF-8 derived localedef data.
22
23sub ucs_to_utf8
24{
25    my $ucs = shift;
26    my $utf8;
27
28    if ($ucs <= 0x7f) {
29	$utf8 = sprintf("\\x%02X", $ucs).$utf8;
30    } elsif ($ucs <= 0x7ff) {
31	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
32	$ucs >>= 6;
33	$utf8 = sprintf("\\x%02X", $ucs | 0xc0).$utf8;
34
35    } elsif ($ucs <= 0xffff) {
36	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
37	$ucs >>= 6;
38	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
39	$ucs >>= 6;
40	$utf8 = sprintf("\\x%02X", $ucs | 0xe0).$utf8;
41
42    } elsif ($ucs <= 0x1fffff) {
43	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
44	$ucs >>= 6;
45	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
46	$ucs >>= 6;
47	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
48	$ucs >>= 6;
49	$utf8 = sprintf("\\x%02X", $ucs | 0xf0).$utf8;
50
51    } elsif ($ucs <= 0x03ffffff) {
52	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
53	$ucs >>= 6;
54	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
55	$ucs >>= 6;
56	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
57	$ucs >>= 6;
58	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
59	$ucs >>= 6;
60	$utf8 = sprintf("\\x%02X", $ucs | 0xf8).$utf8;
61
62    } else {
63	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
64	$ucs >>= 6;
65	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
66	$ucs >>= 6;
67	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
68	$ucs >>= 6;
69	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
70	$ucs >>= 6;
71	$utf8 = sprintf("\\x%02X", ($ucs & 0x3f) | 0x80).$utf8;
72	$ucs >>= 6;
73	$utf8 = sprintf("\\x%02X", $ucs | 0xf8).$utf8;
74    }
75
76    return ($utf8);
77}
78
79my %unames;
80my %uvalues;
81
82#
83# This is not a general purpose Character Map parser, but its good enough
84# for the stock one supplied with CLDR.
85#
86sub load_utf8_cm
87{
88    my $file = shift;
89
90    open(UTF8, "$file") || die "open";
91
92    while (<UTF8>) {
93	next if (/^#/);
94	next if (/^\s*$/);
95	next if (/^\s*CHARMAP\s*$/);
96	next if (/^\s*END\s*CHARMAP\s*$/);
97	chomp;
98	@words = split /\s+/;
99	$name = $words[0];
100	$utf8val = $words[1];
101
102	if (defined($unames{$utf8val})) {
103	    $unames{$utf8val} .= "\n" .$name;
104	} else {
105	    $unames{$utf8val} = $name;
106	}
107	$uvalues{$name} = $utf8val;
108    }
109    close(UTF8);
110}
111
112my %map;
113
114sub load_map
115{
116    my $file = shift;
117
118    open(MAP, "$file") || die "open";
119
120    while (<MAP>) {
121	next if (/^#/);
122	next if (/^\s*$/);
123	next if (/^0x..\+0x../);
124	next if (/^0x[0-9A-F]{4}\t0x[0-9A-F]{4} 0x[0-9A-F]{4}/);
125	next if (/^0x[0-9A-F]{2}\s+#/);
126	next if (/# ... NO MAPPING .../);
127	chomp;
128	@words = split /\s+/;
129	$utf8 = $words[1];
130	$utf8 =~ s/^\\x[0]*//;
131	$utf8 = ucs_to_utf8(hex($utf8));
132	$val = $words[0];
133	if (defined ($map{$val})) {
134	    $map{$val} .= " ".$utf8;
135	} else {
136	    $map{$val} = $utf8;
137	}
138    }
139}
140
141sub mb_str
142{
143    my $val = shift;
144    my $str = "";
145    $val = hex($val);
146
147    if ($val == 0) {
148	return ("\\x00");
149    }
150    while ($val) {
151	$str = sprintf("\\x%02x", $val & 0xff).$str;
152	$val >>= 8;
153    }
154    return ($str);
155}
156
157$mf = shift(@ARGV);
158$codeset = shift(@ARGV);
159my $max_mb;
160
161load_utf8_cm("etc/final-maps/map.UTF-8");
162load_map($mf);
163
164
165   if ($codeset eq "SJIS")      { $max_mb = 2 }
166elsif ($codeset eq "eucCN")     { $max_mb = 2 }
167elsif ($codeset eq "eucJP")     { $max_mb = 3 }
168elsif ($codeset eq "eucKR")     { $max_mb = 2 }
169elsif ($codeset eq "GBK")       { $max_mb = 2 }
170elsif ($codeset eq "GB2312")    { $max_mb = 2 }
171elsif ($codeset eq "Big5")      { $max_mb = 2 }
172else { $max_mb = 1 };
173print("<code_set_name> \"$codeset\"\n");
174print("<mb_cur_min> 1\n");
175print("<mb_cur_max> $max_mb\n");
176
177print("CHARMAP\n");
178foreach $val (sort (keys (%map))) {
179    #$utf8 = $map{$val};
180    foreach $utf8 (split / /, $map{$val}) {
181	$ref = $unames{$utf8};
182	foreach $name (sort (split /\n/, $ref)) {
183	    print "$name";
184	    my $nt = int((64 - length($name) + 7) / 8);
185	    while ($nt) {
186		print "\t";
187		$nt--;
188	    }
189	    print mb_str($val)."\n";
190	}
191    }
192}
193print "END CHARMAP\n";
194