Commit | Line | Data |
---|---|---|
a0ed51b3 LW |
1 | package utf8; |
2 | ||
3 | my $DEBUG = 0; | |
4 | my $seq = "AAA0000"; | |
5 | ||
6 | sub DESTROY {} | |
7 | ||
8 | sub croak { require Carp; Carp::croak(@_) } | |
9 | ||
10 | sub SWASHNEW { | |
11 | my ($class, $type, $list, $minbits, $none) = @_; | |
12 | local $^D = 0 if $^D; | |
13 | print STDERR "SWASHNEW @_\n" if $DEBUG; | |
14 | my $extras; | |
15 | my $bits; | |
16 | ||
17 | if ($type and ref ${"${class}::{$type}"} eq $class) { | |
18 | warn qq/Found \${"${class}::{$type}"}\n/ if $DEBUG; | |
19 | return ${"${class}::{$type}"}; # Already there... | |
20 | } | |
21 | ||
22 | $type ||= $seq++; | |
23 | ||
24 | my $caller; | |
25 | my $i = 0; | |
26 | while (($caller = caller($i)) eq __PACKAGE__) { $i++ } | |
27 | my $encoding = $enc{$caller} || "unicode"; | |
28 | (my $file = $type) =~ s!::!/!g; | |
29 | $file =~ s#^(I[sn]|To)([A-Z].*)#$1/$2#; | |
30 | $list ||= eval { $caller->$type(); } | |
31 | || do "$file.pl" | |
0fa12786 GA |
32 | || do "$encoding/$file.pl" |
33 | || do "$encoding/Is/${type}.pl" | |
34 | || croak("Can't find $encoding character property definition via $caller->$type or $file.pl"); | |
a0ed51b3 LW |
35 | |
36 | $| = 1; | |
37 | ||
38 | if ($list) { | |
39 | my @tmp = split(/^/m, $list); | |
40 | my %seen; | |
db376a24 | 41 | no warnings; |
a0ed51b3 LW |
42 | $extras = join '', grep /^[^0-9a-fA-F]/, @tmp; |
43 | $list = join '', | |
44 | sort { hex $a <=> hex $b } | |
45 | grep {/^([0-9a-fA-F]+)/ and not $seen{$1}++} @tmp; # XXX doesn't do ranges right | |
46 | } | |
47 | ||
48 | if ($none) { | |
49 | my $hextra = sprintf "%04x", $none + 1; | |
50 | $list =~ s/\tXXXX$/\t$hextra/mg; | |
51 | } | |
52 | ||
53 | if ($minbits < 32) { | |
54 | my $top = 0; | |
55 | while ($list =~ /^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+)?)(?:\t([0-9a-fA-F]+))?/mg) { | |
56 | my $min = hex $1; | |
57 | my $max = hex(defined $2 ? $2 : $1); | |
58 | my $val = hex(defined $3 ? $3 : ""); | |
59 | $val += $max - $min if defined $3; | |
60 | $top = $val if $val > $top; | |
61 | } | |
62 | $bits = | |
63 | $top > 0xffff ? 32 : | |
64 | $top > 0xff ? 16 : | |
65 | $top > 1 ? 8 : 1 | |
66 | } | |
67 | $bits = $minbits if $bits < $minbits; | |
68 | ||
69 | my @extras; | |
70 | for my $x ($extras) { | |
71 | pos $x = 0; | |
1fef36c7 | 72 | while ($x =~ /^([^0-9a-fA-F\n])(.*)/mg) { |
a0ed51b3 LW |
73 | my $char = $1; |
74 | my $name = $2; | |
75 | # print STDERR "$1 => $2\n" if $DEBUG; | |
76 | if ($char =~ /[-+!]/) { | |
77 | my ($c,$t) = split(/::/, $name, 2); # bogus use of ::, really | |
78 | my $subobj = $c->SWASHNEW($t, "", 0, 0, 0); | |
79 | push @extras, $name => $subobj; | |
80 | $bits = $subobj->{BITS} if $bits < $subobj->{BITS}; | |
81 | } | |
82 | } | |
83 | } | |
84 | ||
85 | print STDERR "CLASS = $class, TYPE => $type, BITS => $bits, NONE => $none\nEXTRAS =>\n$extras\nLIST =>\n$list\n" if $DEBUG; | |
86 | ||
87 | ${"${class}::{$type}"} = bless { | |
88 | TYPE => $type, | |
89 | BITS => $bits, | |
90 | EXTRAS => $extras, | |
91 | LIST => $list, | |
92 | NONE => $none, | |
93 | @extras, | |
94 | } => $class; | |
95 | } | |
96 | ||
97 | # NOTE: utf8.c:swash_init() assumes entries are never modified once generated. | |
98 | ||
99 | sub SWASHGET { | |
100 | my ($self, $start, $len) = @_; | |
101 | local $^D = 0 if $^D; | |
a0ed51b3 LW |
102 | my $type = $self->{TYPE}; |
103 | my $bits = $self->{BITS}; | |
104 | my $none = $self->{NONE}; | |
1fef36c7 | 105 | print STDERR "SWASHGET @_ [$type/$bits/$none]\n" if $DEBUG; |
a0ed51b3 LW |
106 | my $end = $start + $len; |
107 | my $swatch = ""; | |
108 | my $key; | |
109 | vec($swatch, $len - 1, $bits) = 0; # Extend to correct length. | |
110 | if ($none) { | |
111 | for $key (0 .. $len - 1) { vec($swatch, $key, $bits) = $none } | |
112 | } | |
113 | ||
114 | for ($self->{LIST}) { | |
115 | pos $_ = 0; | |
116 | if ($bits > 1) { | |
117 | LINE: | |
118 | while (/^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+)?)(?:\t([0-9a-fA-F]+))?/mg) { | |
119 | my $min = hex $1; | |
120 | my $max = (defined $2 ? hex $2 : $min); | |
121 | my $val = hex $3; | |
122 | next if $max < $start; | |
123 | # print "$min $max $val\n"; | |
124 | if ($none) { | |
125 | if ($min < $start) { | |
710250cb | 126 | $val += $start - $min if $val < $none; |
a0ed51b3 LW |
127 | $min = $start; |
128 | } | |
129 | for ($key = $min; $key <= $max; $key++) { | |
130 | last LINE if $key >= $end; | |
131 | # print STDERR "$key => $val\n" if $DEBUG; | |
132 | vec($swatch, $key - $start, $bits) = $val; | |
133 | ++$val if $val < $none; | |
134 | } | |
135 | } | |
136 | else { | |
137 | if ($min < $start) { | |
138 | $val += $start - $min; | |
139 | $min = $start; | |
140 | } | |
141 | for ($key = $min; $key <= $max; $key++, $val++) { | |
142 | last LINE if $key >= $end; | |
143 | # print STDERR "$key => $val\n" if $DEBUG; | |
144 | vec($swatch, $key - $start, $bits) = $val; | |
145 | } | |
146 | } | |
147 | } | |
148 | } | |
149 | else { | |
150 | LINE: | |
151 | while (/^([0-9a-fA-F]+)(?:\t([0-9a-fA-F]+))?/mg) { | |
152 | my $min = hex $1; | |
153 | my $max = (defined $2 ? hex $2 : $min); | |
154 | next if $max < $start; | |
155 | if ($min < $start) { | |
156 | $min = $start; | |
157 | } | |
158 | for ($key = $min; $key <= $max; $key++) { | |
159 | last LINE if $key >= $end; | |
160 | # print STDERR "$key => 1\n" if $DEBUG; | |
161 | vec($swatch, $key - $start, 1) = 1; | |
162 | } | |
163 | } | |
164 | } | |
165 | } | |
166 | for my $x ($self->{EXTRAS}) { | |
167 | pos $x = 0; | |
1fef36c7 | 168 | while ($x =~ /^([-+!])(.*)/mg) { |
a0ed51b3 LW |
169 | my $char = $1; |
170 | my $name = $2; | |
171 | print STDERR "INDIRECT $1 $2\n" if $DEBUG; | |
1fef36c7 GA |
172 | my $otherbits = $self->{$name}->{BITS}; |
173 | croak("SWASHGET size mismatch") if $bits < $otherbits; | |
174 | my $other = $self->{$name}->SWASHGET($start, $len); | |
175 | if ($char eq '+') { | |
176 | if ($bits == 1 and $otherbits == 1) { | |
177 | $swatch |= $other; | |
a0ed51b3 | 178 | } |
1fef36c7 GA |
179 | else { |
180 | for ($key = 0; $key < $len; $key++) { | |
181 | vec($swatch, $key, $bits) = vec($other, $key, $otherbits); | |
a0ed51b3 | 182 | } |
1fef36c7 GA |
183 | } |
184 | } | |
185 | elsif ($char eq '!') { | |
186 | if ($bits == 1 and $otherbits == 1) { | |
187 | $swatch |= ~$other; | |
188 | } | |
189 | else { | |
190 | for ($key = 0; $key < $len; $key++) { | |
191 | if (!vec($other, $key, $otherbits)) { | |
192 | vec($swatch, $key, $bits) = 1; | |
a0ed51b3 LW |
193 | } |
194 | } | |
195 | } | |
1fef36c7 GA |
196 | } |
197 | elsif ($char eq '-') { | |
198 | if ($bits == 1 and $otherbits == 1) { | |
199 | $swatch &= ~$other; | |
200 | } | |
201 | else { | |
202 | for ($key = 0; $key < $len; $key++) { | |
203 | if (vec($other, $key, $otherbits)) { | |
204 | vec($swatch, $key, $bits) = 0; | |
a0ed51b3 LW |
205 | } |
206 | } | |
207 | } | |
208 | } | |
209 | } | |
210 | } | |
211 | if ($DEBUG) { | |
212 | print STDERR "CELLS "; | |
213 | for ($key = 0; $key < $len; $key++) { | |
214 | print STDERR vec($swatch, $key, $bits), " "; | |
215 | } | |
216 | print STDERR "\n"; | |
217 | } | |
218 | $swatch; | |
219 | } | |
220 | ||
221 | 1; |