Commit | Line | Data |
---|---|---|
a0ed51b3 | 1 | package utf8; |
cf25bb62 JH |
2 | use strict; |
3 | use warnings; | |
a0ed51b3 | 4 | |
15732964 | 5 | sub DEBUG () { 0 } |
a0ed51b3 LW |
6 | |
7 | sub DESTROY {} | |
8 | ||
5beb625e JH |
9 | my %Cache; |
10 | ||
86916d66 JH |
11 | sub croak { require Carp; Carp::croak(@_) } |
12 | ||
5beb625e | 13 | ## |
3a2263fe RGS |
14 | ## "SWASH" == "SWATCH HASH". A "swatch" is a swatch of the Unicode landscape. |
15 | ## It's a data structure that encodes a set of Unicode characters. | |
5beb625e JH |
16 | ## |
17 | ||
a0ed51b3 LW |
18 | sub SWASHNEW { |
19 | my ($class, $type, $list, $minbits, $none) = @_; | |
20 | local $^D = 0 if $^D; | |
15732964 JH |
21 | |
22 | print STDERR "SWASHNEW @_\n" if DEBUG; | |
23 | ||
cf25bb62 JH |
24 | ## |
25 | ## Get the list of codepoints for the type. | |
26 | ## Called from utf8.c | |
27 | ## | |
28 | ## Given a $type, our goal is to fill $list with the set of codepoint | |
5beb625e | 29 | ## ranges. |
cf25bb62 JH |
30 | ## |
31 | ## To make the parsing of $type clear, this code takes the a rather | |
2d92f8a0 | 32 | ## unorthodox approach of last'ing out of the block once we have the |
cf25bb62 JH |
33 | ## info we need. Were this to be a subroutine, the 'last' would just |
34 | ## be a 'return'. | |
35 | ## | |
5beb625e JH |
36 | my $file; ## file to load data from, and also part of the %Cache key. |
37 | my $ListSorted = 0; | |
38 | ||
cf25bb62 JH |
39 | if ($type) |
40 | { | |
41 | $type =~ s/^\s+//; | |
42 | $type =~ s/\s+$//; | |
43 | ||
44 | print "type = $type\n" if DEBUG; | |
45 | ||
cf25bb62 JH |
46 | GETFILE: |
47 | { | |
48 | ## | |
5beb625e JH |
49 | ## 'Is' is always optional, so if it's there, remove it. |
50 | ## Same with 'Category=' and 'Script='. | |
cf25bb62 | 51 | ## |
5beb625e | 52 | ## 'Block=' is replaced by 'In'. |
cf25bb62 | 53 | ## |
2d92f8a0 JH |
54 | my $wasIs; |
55 | ||
56 | ($wasIs = $type =~ s/^Is(?:\s+|[-_])?//i) | |
5beb625e JH |
57 | or |
58 | $type =~ s/^Category\s*=\s*//i | |
59 | or | |
60 | $type =~ s/^Script\s*=\s*//i | |
61 | or | |
62 | $type =~ s/^Block\s*=\s*/In/i; | |
cf25bb62 | 63 | |
5beb625e JH |
64 | ## |
65 | ## See if it's in the direct mapping table. | |
66 | ## | |
67 | require "unicore/Exact.pl"; | |
68 | if (my $base = $utf8::Exact{$type}) { | |
69 | $file = "unicore/lib/$base.pl"; | |
70 | last GETFILE; | |
cf25bb62 JH |
71 | } |
72 | ||
73 | ## | |
5beb625e JH |
74 | ## If not there exactly, try the canonical form. The canonical |
75 | ## form is lowercased, with any separators (\s+|[-_]) removed. | |
cf25bb62 | 76 | ## |
5beb625e JH |
77 | my $canonical = lc $type; |
78 | $canonical =~ s/(?<=[a-z\d])(?:\s+|[-_])(?=[a-z\d])//g; | |
79 | print "canonical = $canonical\n" if DEBUG; | |
cf25bb62 | 80 | |
5beb625e JH |
81 | require "unicore/Canonical.pl"; |
82 | if (my $base = $utf8::Canonical{$canonical}) { | |
83 | $file = "unicore/lib/$base.pl"; | |
84 | last GETFILE; | |
cf25bb62 JH |
85 | } |
86 | ||
491fd90a JH |
87 | ## |
88 | ## It could be a user-defined property. | |
89 | ## | |
90 | ||
3a2263fe | 91 | my $caller1 = caller(1); |
2d92f8a0 | 92 | |
3a2263fe RGS |
93 | if (defined $caller1 && $type =~ /^(?:\w+)$/) { |
94 | my $prop = $caller1 . "::" . ( $wasIs ? "Is" : "" ) . $type; | |
2d92f8a0 JH |
95 | if (exists &{$prop}) { |
96 | no strict 'refs'; | |
97 | ||
98 | $list = &{$prop}; | |
99 | last GETFILE; | |
100 | } | |
101 | } | |
491fd90a | 102 | |
3a2263fe RGS |
103 | ## |
104 | ## See if it's a user-level "To". | |
105 | ## | |
106 | ||
107 | my $caller0 = caller(0); | |
108 | ||
109 | if (defined $caller0 && $type =~ /^To(?:\w+)$/) { | |
110 | my $map = $caller0 . "::" . $type; | |
111 | if (exists &{$map}) { | |
112 | no strict 'refs'; | |
113 | ||
114 | $list = &{$map}; | |
115 | last GETFILE; | |
116 | } | |
117 | } | |
118 | ||
cf25bb62 | 119 | ## |
3a2263fe RGS |
120 | ## Last attempt -- see if it's a standard "To" name |
121 | ## (e.g. "ToLower") ToTitle is used by ucfirst(). | |
122 | ## The user-level way to access ToDigit() and ToFold() | |
123 | ## is to use Unicode::UCD. | |
cf25bb62 | 124 | ## |
3a2263fe | 125 | if ($type =~ /^To(Digit|Fold|Lower|Title|Upper)$/) |
cf25bb62 JH |
126 | { |
127 | $file = "unicore/To/$1.pl"; | |
128 | ## would like to test to see if $file actually exists.... | |
129 | last GETFILE; | |
130 | } | |
131 | ||
132 | ## | |
133 | ## If we reach this line, it's because we couldn't figure | |
134 | ## out what to do with $type. Ouch. | |
135 | ## | |
bc45ce41 JH |
136 | |
137 | return $type; | |
cf25bb62 JH |
138 | } |
139 | ||
491fd90a JH |
140 | if (defined $file) { |
141 | print "found it (file='$file')\n" if DEBUG; | |
142 | ||
143 | ## | |
144 | ## If we reach here, it was due to a 'last GETFILE' above | |
3a2263fe | 145 | ## (exception: user-defined properties and mappings), so we |
491fd90a JH |
146 | ## have a filename, so now we load it if we haven't already. |
147 | ## If we have, return the cached results. The cache key is the | |
148 | ## file to load. | |
149 | ## | |
150 | if ($Cache{$file} and ref($Cache{$file}) eq $class) | |
151 | { | |
152 | print "Returning cached '$file' for \\p{$type}\n" if DEBUG; | |
153 | return $Cache{$class, $file}; | |
154 | } | |
155 | ||
156 | $list = do $file; | |
157 | } | |
5beb625e | 158 | |
5beb625e | 159 | $ListSorted = 1; ## we know that these lists are sorted |
886ba366 | 160 | } |
a0ed51b3 | 161 | |
15732964 JH |
162 | my $extras; |
163 | my $bits; | |
cf25bb62 | 164 | |
5beb625e | 165 | my $ORIG = $list; |
a0ed51b3 LW |
166 | if ($list) { |
167 | my @tmp = split(/^/m, $list); | |
168 | my %seen; | |
db376a24 | 169 | no warnings; |
a0ed51b3 LW |
170 | $extras = join '', grep /^[^0-9a-fA-F]/, @tmp; |
171 | $list = join '', | |
df68b396 JH |
172 | map { $_->[1] } |
173 | sort { $a->[0] <=> $b->[0] } | |
174 | map { /^([0-9a-fA-F]+)/; [ hex($1), $_ ] } | |
175 | grep { /^([0-9a-fA-F]+)/ and not $seen{$1}++ } @tmp; # XXX doesn't do ranges right | |
a0ed51b3 LW |
176 | } |
177 | ||
178 | if ($none) { | |
179 | my $hextra = sprintf "%04x", $none + 1; | |
180 | $list =~ s/\tXXXX$/\t$hextra/mg; | |
181 | } | |
182 | ||
183 | if ($minbits < 32) { | |
184 | my $top = 0; | |
3a2263fe | 185 | while ($list =~ /^([0-9a-fA-F]+)(?:[\t]([0-9a-fA-F]+)?)(?:[ \t]([0-9a-fA-F]+))?/mg) { |
a0ed51b3 | 186 | my $min = hex $1; |
3a2263fe RGS |
187 | my $max = defined $2 ? hex $2 : $min; |
188 | my $val = defined $3 ? hex $3 : 0; | |
a0ed51b3 LW |
189 | $val += $max - $min if defined $3; |
190 | $top = $val if $val > $top; | |
191 | } | |
192 | $bits = | |
193 | $top > 0xffff ? 32 : | |
194 | $top > 0xff ? 16 : | |
195 | $top > 1 ? 8 : 1 | |
196 | } | |
197 | $bits = $minbits if $bits < $minbits; | |
198 | ||
199 | my @extras; | |
200 | for my $x ($extras) { | |
201 | pos $x = 0; | |
1fef36c7 | 202 | while ($x =~ /^([^0-9a-fA-F\n])(.*)/mg) { |
a0ed51b3 LW |
203 | my $char = $1; |
204 | my $name = $2; | |
6d6ae962 | 205 | print STDERR "$1 => $2\n" if DEBUG; |
a0ed51b3 LW |
206 | if ($char =~ /[-+!]/) { |
207 | my ($c,$t) = split(/::/, $name, 2); # bogus use of ::, really | |
11ef8fdd JH |
208 | my $subobj; |
209 | if ($c eq 'utf8') { | |
210 | $subobj = $c->SWASHNEW($t, "", 0, 0, 0); | |
211 | } | |
212 | elsif ($c =~ /^([0-9a-fA-F]+)/) { | |
213 | $subobj = utf8->SWASHNEW("", $c, 0, 0, 0); | |
214 | } | |
bc45ce41 | 215 | return $subobj unless ref $subobj; |
a0ed51b3 LW |
216 | push @extras, $name => $subobj; |
217 | $bits = $subobj->{BITS} if $bits < $subobj->{BITS}; | |
218 | } | |
219 | } | |
220 | } | |
221 | ||
15732964 | 222 | print STDERR "CLASS = $class, TYPE => $type, BITS => $bits, NONE => $none\nEXTRAS =>\n$extras\nLIST =>\n$list\n" if DEBUG; |
a0ed51b3 | 223 | |
5beb625e | 224 | my $SWASH = bless { |
a0ed51b3 LW |
225 | TYPE => $type, |
226 | BITS => $bits, | |
227 | EXTRAS => $extras, | |
228 | LIST => $list, | |
229 | NONE => $none, | |
230 | @extras, | |
231 | } => $class; | |
5beb625e JH |
232 | |
233 | if ($file) { | |
234 | $Cache{$class, $file} = $SWASH; | |
235 | } | |
236 | ||
237 | return $SWASH; | |
a0ed51b3 LW |
238 | } |
239 | ||
240 | # NOTE: utf8.c:swash_init() assumes entries are never modified once generated. | |
241 | ||
242 | sub SWASHGET { | |
035d37be | 243 | # See utf8.c:Perl_swash_fetch for problems with this interface. |
a0ed51b3 LW |
244 | my ($self, $start, $len) = @_; |
245 | local $^D = 0 if $^D; | |
a0ed51b3 LW |
246 | my $type = $self->{TYPE}; |
247 | my $bits = $self->{BITS}; | |
248 | my $none = $self->{NONE}; | |
15732964 | 249 | print STDERR "SWASHGET @_ [$type/$bits/$none]\n" if DEBUG; |
a0ed51b3 LW |
250 | my $end = $start + $len; |
251 | my $swatch = ""; | |
252 | my $key; | |
253 | vec($swatch, $len - 1, $bits) = 0; # Extend to correct length. | |
254 | if ($none) { | |
255 | for $key (0 .. $len - 1) { vec($swatch, $key, $bits) = $none } | |
256 | } | |
257 | ||
258 | for ($self->{LIST}) { | |
259 | pos $_ = 0; | |
260 | if ($bits > 1) { | |
261 | LINE: | |
3a2263fe RGS |
262 | while (/^([0-9a-fA-F]+)(?:[ \t]([0-9a-fA-F]+)?)?(?:[ \t]([0-9a-fA-F]+))?/mg) { |
263 | chomp; | |
264 | my ($a, $b, $c) = ($1, $2, $3); | |
265 | croak "$type: illegal mapping '$_'" | |
266 | if $type =~ /^To/ && | |
267 | !(defined $a && defined $c); | |
268 | my $min = hex $a; | |
269 | my $max = defined $b ? hex $b : $min; | |
270 | my $val = defined $c ? hex $c : 0; | |
a0ed51b3 | 271 | next if $max < $start; |
6d6ae962 | 272 | print "$min $max $val\n" if DEBUG; |
a0ed51b3 LW |
273 | if ($none) { |
274 | if ($min < $start) { | |
710250cb | 275 | $val += $start - $min if $val < $none; |
a0ed51b3 LW |
276 | $min = $start; |
277 | } | |
278 | for ($key = $min; $key <= $max; $key++) { | |
279 | last LINE if $key >= $end; | |
6d6ae962 | 280 | print STDERR "$key => $val\n" if DEBUG; |
a0ed51b3 LW |
281 | vec($swatch, $key - $start, $bits) = $val; |
282 | ++$val if $val < $none; | |
283 | } | |
284 | } | |
285 | else { | |
286 | if ($min < $start) { | |
287 | $val += $start - $min; | |
288 | $min = $start; | |
289 | } | |
290 | for ($key = $min; $key <= $max; $key++, $val++) { | |
291 | last LINE if $key >= $end; | |
6d6ae962 | 292 | print STDERR "$key => $val\n" if DEBUG; |
a0ed51b3 LW |
293 | vec($swatch, $key - $start, $bits) = $val; |
294 | } | |
295 | } | |
296 | } | |
297 | } | |
298 | else { | |
299 | LINE: | |
99a6b1f0 | 300 | while (/^([0-9a-fA-F]+)(?:[ \t]+([0-9a-fA-F]+))?/mg) { |
3a2263fe | 301 | chomp; |
a0ed51b3 | 302 | my $min = hex $1; |
3a2263fe | 303 | my $max = defined $2 ? hex $2 : $min; |
a0ed51b3 LW |
304 | next if $max < $start; |
305 | if ($min < $start) { | |
306 | $min = $start; | |
307 | } | |
308 | for ($key = $min; $key <= $max; $key++) { | |
309 | last LINE if $key >= $end; | |
6d6ae962 | 310 | print STDERR "$key => 1\n" if DEBUG; |
a0ed51b3 LW |
311 | vec($swatch, $key - $start, 1) = 1; |
312 | } | |
313 | } | |
314 | } | |
315 | } | |
316 | for my $x ($self->{EXTRAS}) { | |
317 | pos $x = 0; | |
1fef36c7 | 318 | while ($x =~ /^([-+!])(.*)/mg) { |
a0ed51b3 LW |
319 | my $char = $1; |
320 | my $name = $2; | |
15732964 | 321 | print STDERR "INDIRECT $1 $2\n" if DEBUG; |
1fef36c7 GA |
322 | my $otherbits = $self->{$name}->{BITS}; |
323 | croak("SWASHGET size mismatch") if $bits < $otherbits; | |
324 | my $other = $self->{$name}->SWASHGET($start, $len); | |
325 | if ($char eq '+') { | |
326 | if ($bits == 1 and $otherbits == 1) { | |
327 | $swatch |= $other; | |
a0ed51b3 | 328 | } |
1fef36c7 GA |
329 | else { |
330 | for ($key = 0; $key < $len; $key++) { | |
331 | vec($swatch, $key, $bits) = vec($other, $key, $otherbits); | |
a0ed51b3 | 332 | } |
1fef36c7 GA |
333 | } |
334 | } | |
335 | elsif ($char eq '!') { | |
336 | if ($bits == 1 and $otherbits == 1) { | |
337 | $swatch |= ~$other; | |
338 | } | |
339 | else { | |
340 | for ($key = 0; $key < $len; $key++) { | |
341 | if (!vec($other, $key, $otherbits)) { | |
342 | vec($swatch, $key, $bits) = 1; | |
a0ed51b3 LW |
343 | } |
344 | } | |
345 | } | |
1fef36c7 GA |
346 | } |
347 | elsif ($char eq '-') { | |
348 | if ($bits == 1 and $otherbits == 1) { | |
349 | $swatch &= ~$other; | |
350 | } | |
351 | else { | |
352 | for ($key = 0; $key < $len; $key++) { | |
353 | if (vec($other, $key, $otherbits)) { | |
354 | vec($swatch, $key, $bits) = 0; | |
a0ed51b3 LW |
355 | } |
356 | } | |
357 | } | |
358 | } | |
359 | } | |
360 | } | |
15732964 | 361 | if (DEBUG) { |
a0ed51b3 LW |
362 | print STDERR "CELLS "; |
363 | for ($key = 0; $key < $len; $key++) { | |
364 | print STDERR vec($swatch, $key, $bits), " "; | |
365 | } | |
366 | print STDERR "\n"; | |
367 | } | |
368 | $swatch; | |
369 | } | |
370 | ||
371 | 1; |