Commit | Line | Data |
017e2add |
1 | #!../../perl -w |
508a30f1 |
2 | BEGIN { |
b0bf7e4c |
3 | unshift @INC, qw(../../lib ../../../lib); |
4 | $ENV{PATH} .= ';../..;../../..' if $^O eq 'MSWin32'; |
508a30f1 |
5 | } |
017e2add |
6 | use strict; |
afdae191 |
7 | use Getopt::Std; |
8 | my @orig_ARGV = @ARGV; |
dcda1f94 |
9 | |
eb560316 |
10 | # These may get re-ordered. |
11 | # RAW is a do_now as inserted by &enter |
12 | # AGG is an aggreagated do_now, as built up by &process |
13 | use constant { |
14 | RAW_NEXT => 0, |
15 | RAW_IN_LEN => 1, |
16 | RAW_OUT_BYTES => 2, |
17 | RAW_FALLBACK => 3, |
18 | |
19 | AGG_MIN_IN => 0, |
20 | AGG_MAX_IN => 1, |
21 | AGG_OUT_BYTES => 2, |
22 | AGG_NEXT => 3, |
23 | AGG_IN_LEN => 4, |
24 | AGG_OUT_LEN => 5, |
25 | AGG_FALLBACK => 6, |
26 | }; |
27 | # (See the algorithm in encengine.c - we're building structures for it) |
28 | |
29 | # There are two sorts of structures. |
30 | # "do_now" (an array, two variants of what needs storing) is whatever we need |
31 | # to do now we've read an input byte. |
32 | # It's housed in a "do_next" (which is how we got to it), and in turn points |
33 | # to a "do_next" which contains all the "do_now"s for the next input byte. |
34 | |
35 | # There will be a "do_next" which is the start state. |
36 | # For a single byte encoding it's the only "do_next" - each "do_now" points |
37 | # back to it, and each "do_now" will cause bytes. There is no state. |
38 | |
39 | # For a multi-byte encoding where all characters in the input are the same |
40 | # length, then there will be a tree of "do_now"->"do_next"->"do_now" |
41 | # branching out from the start state, one step for each input byte. |
42 | # The leaf "do_now"s will all be at the same distance from the start state, |
43 | # only the leaf "do_now"s cause output bytes, and they in turn point back to |
44 | # the start state. |
45 | |
46 | # For an encoding where there are varaible length input byte sequences, you |
47 | # will encounter a leaf "do_now" sooner for the shorter input sequences, but |
48 | # as before the leaves will point back to the start state. |
49 | |
50 | # The system will cope with escape encodings (imagine them as a mostly |
51 | # self-contained tree for each escape state, and cross links between trees |
52 | # at the state-switching characters) but so far no input format defines these. |
53 | |
54 | # The system will also cope with having output "leaves" in the middle of |
55 | # the bifurcating branches, not just at the extremities, but again no |
56 | # input format does this yet. |
57 | |
58 | # There are two variants of the "do_now" structure. The first, smaller variant |
59 | # is generated by &enter as the input file is read. There is one structure |
60 | # for each input byte. Say we are mapping a single byte encoding to a |
61 | # single byte encoding, with "ABCD" going "abcd". There will be |
62 | # 4 "do_now"s, {"A" => [...,"a",...], "B" => [...,"b",...], "C"=>..., "D"=>...} |
63 | |
64 | # &process then walks the tree, building aggregate "do_now" structres for |
65 | # adjacent bytes where possible. The aggregate is for a contiguous range of |
66 | # bytes which each produce the same length of output, each move to the |
67 | # same next state, and each have the same fallback flag. |
68 | # So our 4 RAW "do_now"s above become replaced by a single structure |
69 | # containing: |
70 | # ["A", "D", "abcd", 1, ...] |
71 | # ie, for an input byte $_ in "A".."D", output 1 byte, found as |
72 | # substr ("abcd", (ord $_ - ord "A") * 1, 1) |
73 | # which maps very nicely into pointer arithmetic in C for encengine.c |
74 | |
017e2add |
75 | sub encode_U |
76 | { |
9b37254d |
77 | # UTF-8 encode long hand - only covers part of perl's range |
7ba7f87b |
78 | ## my $uv = shift; |
1b026014 |
79 | # chr() works in native space so convert value from table |
80 | # into that space before using chr(). |
7ba7f87b |
81 | my $ch = chr(utf8::unicode_to_native($_[0])); |
1b026014 |
82 | # Now get core perl to encode that the way it likes. |
83 | utf8::encode($ch); |
84 | return $ch; |
017e2add |
85 | } |
86 | |
87 | sub encode_S |
88 | { |
14a8264b |
89 | # encode single byte |
7ba7f87b |
90 | ## my ($ch,$page) = @_; return chr($ch); |
91 | return chr $_[0]; |
017e2add |
92 | } |
93 | |
94 | sub encode_D |
95 | { |
14a8264b |
96 | # encode double byte MS byte first |
7ba7f87b |
97 | ## my ($ch,$page) = @_; return chr($page).chr($ch); |
98 | return chr ($_[1]) . chr $_[0]; |
017e2add |
99 | } |
100 | |
101 | sub encode_M |
102 | { |
14a8264b |
103 | # encode Multi-byte - single for 0..255 otherwise double |
7ba7f87b |
104 | ## my ($ch,$page) = @_; |
105 | ## return &encode_D if $page; |
106 | ## return &encode_S; |
107 | return chr ($_[1]) . chr $_[0] if $_[1]; |
108 | return chr $_[0]; |
017e2add |
109 | } |
110 | |
7ba7f87b |
111 | my %encode_types = (U => \&encode_U, |
112 | S => \&encode_S, |
113 | D => \&encode_D, |
114 | M => \&encode_M, |
115 | ); |
116 | |
14a8264b |
117 | # Win32 does not expand globs on command line |
252a8565 |
118 | eval "\@ARGV = map(glob(\$_),\@ARGV)" if ($^O eq 'MSWin32'); |
18b7339f |
119 | |
afdae191 |
120 | my %opt; |
3964a085 |
121 | # I think these are: |
122 | # -Q to disable the duplicate codepoint test |
123 | # -q to remove comments written to output files |
124 | # -O to enable the (brute force) substring optimiser |
125 | # -o <output> to specify the output file name (else it's the first arg) |
126 | # -f <inlist> to give a file with a list of input files (else use the args) |
127 | # -n <name> to name the encoding (else use the basename of the input file. |
128 | getopts('QqOo:f:n:',\%opt); |
129 | |
130 | # This really should go first, else the die here causes empty (non-erroneous) |
131 | # output files to be written. |
132 | my @encfiles; |
133 | if (exists $opt{'f'}) { |
134 | # -F is followed by name of file containing list of filenames |
135 | my $flist = $opt{'f'}; |
136 | open(FLIST,$flist) || die "Cannot open $flist:$!"; |
137 | chomp(@encfiles = <FLIST>); |
138 | close(FLIST); |
139 | } else { |
140 | @encfiles = @ARGV; |
141 | } |
142 | |
afdae191 |
143 | my $cname = (exists $opt{'o'}) ? $opt{'o'} : shift(@ARGV); |
2f2b4ff2 |
144 | chmod(0666,$cname) if -f $cname && !-w $cname; |
017e2add |
145 | open(C,">$cname") || die "Cannot open $cname:$!"; |
afdae191 |
146 | |
2f2b4ff2 |
147 | my $dname = $cname; |
3964a085 |
148 | my $hname = $cname; |
e0c49a6b |
149 | |
dcda1f94 |
150 | my ($doC,$doEnc,$doUcm,$doPet); |
e0c49a6b |
151 | |
152 | if ($cname =~ /\.(c|xs)$/) |
153 | { |
154 | $doC = 1; |
3964a085 |
155 | $dname =~ s/(\.[^\.]*)?$/_def.h/; |
e0c49a6b |
156 | chmod(0666,$dname) if -f $cname && !-w $dname; |
157 | open(D,">$dname") || die "Cannot open $dname:$!"; |
e0c49a6b |
158 | $hname =~ s/(\.[^\.]*)?$/.h/; |
159 | chmod(0666,$hname) if -f $cname && !-w $hname; |
160 | open(H,">$hname") || die "Cannot open $hname:$!"; |
161 | |
162 | foreach my $fh (\*C,\*D,\*H) |
163 | { |
afdae191 |
164 | print $fh <<"END" unless $opt{'q'}; |
14a8264b |
165 | /* |
166 | !!!!!!! DO NOT EDIT THIS FILE !!!!!!! |
167 | This file was autogenerated by: |
023d8852 |
168 | $^X $0 @orig_ARGV |
14a8264b |
169 | */ |
170 | END |
e0c49a6b |
171 | } |
14a8264b |
172 | |
e0c49a6b |
173 | if ($cname =~ /(\w+)\.xs$/) |
174 | { |
175 | print C "#include <EXTERN.h>\n"; |
176 | print C "#include <perl.h>\n"; |
177 | print C "#include <XSUB.h>\n"; |
178 | print C "#define U8 U8\n"; |
179 | } |
180 | print C "#include \"encode.h\"\n"; |
d811239c |
181 | |
e0c49a6b |
182 | } |
183 | elsif ($cname =~ /\.enc$/) |
184 | { |
185 | $doEnc = 1; |
186 | } |
187 | elsif ($cname =~ /\.ucm$/) |
2f2b4ff2 |
188 | { |
e0c49a6b |
189 | $doUcm = 1; |
2f2b4ff2 |
190 | } |
dcda1f94 |
191 | elsif ($cname =~ /\.pet$/) |
192 | { |
193 | $doPet = 1; |
194 | } |
017e2add |
195 | |
196 | my %encoding; |
197 | my %strings; |
b1e7e56f |
198 | my $saved = 0; |
199 | my $subsave = 0; |
200 | my $strings = 0; |
017e2add |
201 | |
2f2b4ff2 |
202 | sub cmp_name |
203 | { |
204 | if ($a =~ /^.*-(\d+)/) |
205 | { |
206 | my $an = $1; |
207 | if ($b =~ /^.*-(\d+)/) |
208 | { |
209 | my $r = $an <=> $1; |
210 | return $r if $r; |
211 | } |
212 | } |
213 | return $a cmp $b; |
214 | } |
215 | |
dcda1f94 |
216 | |
c6fdb90a |
217 | foreach my $enc (sort cmp_name @encfiles) |
017e2add |
218 | { |
9b37254d |
219 | my ($name,$sfx) = $enc =~ /^.*?([\w-]+)\.(enc|ucm)$/; |
51ef4e11 |
220 | $name = $opt{'n'} if exists $opt{'n'}; |
017e2add |
221 | if (open(E,$enc)) |
222 | { |
9b37254d |
223 | if ($sfx eq 'enc') |
224 | { |
dcda1f94 |
225 | compile_enc(\*E,lc($name)); |
9b37254d |
226 | } |
227 | else |
228 | { |
dcda1f94 |
229 | compile_ucm(\*E,lc($name)); |
9b37254d |
230 | } |
017e2add |
231 | } |
232 | else |
233 | { |
234 | warn "Cannot open $enc for $name:$!"; |
235 | } |
236 | } |
237 | |
e0c49a6b |
238 | if ($doC) |
2f2b4ff2 |
239 | { |
b1e7e56f |
240 | print STDERR "Writing compiled form\n"; |
dcda1f94 |
241 | foreach my $name (sort cmp_name keys %encoding) |
242 | { |
243 | my ($e2u,$u2e,$erep,$min_el,$max_el) = @{$encoding{$name}}; |
244 | output(\*C,$name.'_utf8',$e2u); |
245 | output(\*C,'utf8_'.$name,$u2e); |
246 | push(@{$encoding{$name}},outstring(\*C,$e2u->{Cname}.'_def',$erep)); |
247 | } |
e0c49a6b |
248 | foreach my $enc (sort cmp_name keys %encoding) |
249 | { |
dcda1f94 |
250 | my ($e2u,$u2e,$rep,$min_el,$max_el,$rsym) = @{$encoding{$enc}}; |
251 | my @info = ($e2u->{Cname},$u2e->{Cname},$rsym,length($rep),$min_el,$max_el); |
e0c49a6b |
252 | my $sym = "${enc}_encoding"; |
253 | $sym =~ s/\W+/_/g; |
254 | print C "encode_t $sym = \n"; |
dcda1f94 |
255 | print C " {",join(',',@info,"{\"$enc\",(const char *)0}"),"};\n\n"; |
e0c49a6b |
256 | } |
2f2b4ff2 |
257 | |
e0c49a6b |
258 | foreach my $enc (sort cmp_name keys %encoding) |
259 | { |
260 | my $sym = "${enc}_encoding"; |
261 | $sym =~ s/\W+/_/g; |
262 | print H "extern encode_t $sym;\n"; |
d811239c |
263 | print D " Encode_XSEncoding(aTHX_ &$sym);\n"; |
e0c49a6b |
264 | } |
017e2add |
265 | |
e0c49a6b |
266 | if ($cname =~ /(\w+)\.xs$/) |
267 | { |
268 | my $mod = $1; |
d811239c |
269 | print C <<'END'; |
270 | |
023d8852 |
271 | static void |
d811239c |
272 | Encode_XSEncoding(pTHX_ encode_t *enc) |
273 | { |
274 | dSP; |
275 | HV *stash = gv_stashpv("Encode::XS", TRUE); |
276 | SV *sv = sv_bless(newRV_noinc(newSViv(PTR2IV(enc))),stash); |
277 | int i = 0; |
278 | PUSHMARK(sp); |
279 | XPUSHs(sv); |
280 | while (enc->name[i]) |
281 | { |
282 | const char *name = enc->name[i++]; |
283 | XPUSHs(sv_2mortal(newSVpvn(name,strlen(name)))); |
284 | } |
285 | PUTBACK; |
286 | call_pv("Encode::define_encoding",G_DISCARD); |
287 | SvREFCNT_dec(sv); |
288 | } |
289 | |
290 | END |
291 | |
e0c49a6b |
292 | print C "\nMODULE = Encode::$mod\tPACKAGE = Encode::$mod\n\n"; |
293 | print C "BOOT:\n{\n"; |
294 | print C "#include \"$dname\"\n"; |
295 | print C "}\n"; |
296 | } |
3964a085 |
297 | # Close in void context is bad, m'kay |
298 | close(D) or warn "Error closing '$dname': $!"; |
299 | close(H) or warn "Error closing '$hname': $!"; |
f20503bb |
300 | |
301 | my $perc_saved = $strings/($strings + $saved) * 100; |
302 | my $perc_subsaved = $strings/($strings + $subsave) * 100; |
b1e7e56f |
303 | printf STDERR "%d bytes in string tables\n",$strings; |
f20503bb |
304 | printf STDERR "%d bytes (%.3g%%) saved spotting duplicates\n", |
305 | $saved, $perc_saved if $saved; |
306 | printf STDERR "%d bytes (%.3g%%) saved using substrings\n", |
307 | $subsave, $perc_subsaved if $subsave; |
2f2b4ff2 |
308 | } |
dcda1f94 |
309 | elsif ($doEnc) |
310 | { |
311 | foreach my $name (sort cmp_name keys %encoding) |
312 | { |
313 | my ($e2u,$u2e,$erep,$min_el,$max_el) = @{$encoding{$name}}; |
314 | output_enc(\*C,$name,$e2u); |
315 | } |
316 | } |
317 | elsif ($doUcm) |
318 | { |
319 | foreach my $name (sort cmp_name keys %encoding) |
320 | { |
321 | my ($e2u,$u2e,$erep,$min_el,$max_el) = @{$encoding{$name}}; |
322 | output_ucm(\*C,$name,$u2e,$erep,$min_el,$max_el); |
323 | } |
324 | } |
325 | |
3964a085 |
326 | # writing half meg files and then not checking to see if you just filled the |
327 | # disk is bad, m'kay |
328 | close(C) or die "Error closing '$cname': $!"; |
9b37254d |
329 | |
3964a085 |
330 | # End of the main program. |
b1e7e56f |
331 | |
9b37254d |
332 | sub compile_ucm |
333 | { |
dcda1f94 |
334 | my ($fh,$name) = @_; |
9b37254d |
335 | my $e2u = {}; |
336 | my $u2e = {}; |
337 | my $cs; |
338 | my %attr; |
339 | while (<$fh>) |
340 | { |
341 | s/#.*$//; |
342 | last if /^\s*CHARMAP\s*$/i; |
7ba7f87b |
343 | if (/^\s*<(\w+)>\s+"?([^"]*)"?\s*$/i) # " # Grrr |
9b37254d |
344 | { |
345 | $attr{$1} = $2; |
346 | } |
347 | } |
348 | if (!defined($cs = $attr{'code_set_name'})) |
349 | { |
350 | warn "No <code_set_name> in $name\n"; |
351 | } |
352 | else |
353 | { |
51ef4e11 |
354 | $name = $cs unless exists $opt{'n'}; |
9b37254d |
355 | } |
356 | my $erep; |
357 | my $urep; |
afdae191 |
358 | my $max_el; |
359 | my $min_el; |
9b37254d |
360 | if (exists $attr{'subchar'}) |
361 | { |
afdae191 |
362 | my @byte; |
363 | $attr{'subchar'} =~ /^\s*/cg; |
364 | push(@byte,$1) while $attr{'subchar'} =~ /\G\\x([0-9a-f]+)/icg; |
365 | $erep = join('',map(chr(hex($_)),@byte)); |
9b37254d |
366 | } |
b1e7e56f |
367 | print "Reading $name ($cs)\n"; |
9b37254d |
368 | my $nfb = 0; |
369 | my $hfb = 0; |
370 | while (<$fh>) |
371 | { |
372 | s/#.*$//; |
373 | last if /^\s*END\s+CHARMAP\s*$/i; |
374 | next if /^\s*$/; |
afdae191 |
375 | my ($u,@byte); |
376 | my $fb = ''; |
377 | $u = $1 if (/^<U([0-9a-f]+)>\s+/igc); |
378 | push(@byte,$1) while /\G\\x([0-9a-f]+)/igc; |
379 | $fb = $1 if /\G\s*(\|[0-3])/gc; |
380 | # warn "$_: $u @byte | $fb\n"; |
381 | die "Bad line:$_" unless /\G\s*(#.*)?$/gc; |
9b37254d |
382 | if (defined($u)) |
383 | { |
384 | my $uch = encode_U(hex($u)); |
e0c49a6b |
385 | my $ech = join('',map(chr(hex($_)),@byte)); |
afdae191 |
386 | my $el = length($ech); |
387 | $max_el = $el if (!defined($max_el) || $el > $max_el); |
388 | $min_el = $el if (!defined($min_el) || $el < $min_el); |
9b37254d |
389 | if (length($fb)) |
390 | { |
391 | $fb = substr($fb,1); |
392 | $hfb++; |
393 | } |
394 | else |
395 | { |
396 | $nfb++; |
397 | $fb = '0'; |
398 | } |
399 | # $fb is fallback flag |
400 | # 0 - round trip safe |
401 | # 1 - fallback for unicode -> enc |
402 | # 2 - skip sub-char mapping |
403 | # 3 - fallback enc -> unicode |
404 | enter($u2e,$uch,$ech,$u2e,$fb+0) if ($fb =~ /[01]/); |
405 | enter($e2u,$ech,$uch,$e2u,$fb+0) if ($fb =~ /[03]/); |
406 | } |
407 | else |
408 | { |
409 | warn $_; |
410 | } |
9b37254d |
411 | } |
412 | if ($nfb && $hfb) |
413 | { |
414 | die "$nfb entries without fallback, $hfb entries with\n"; |
415 | } |
dcda1f94 |
416 | $encoding{$name} = [$e2u,$u2e,$erep,$min_el,$max_el]; |
9b37254d |
417 | } |
418 | |
14a8264b |
419 | sub compile_enc |
017e2add |
420 | { |
dcda1f94 |
421 | my ($fh,$name) = @_; |
017e2add |
422 | my $e2u = {}; |
423 | my $u2e = {}; |
424 | |
425 | my $type; |
426 | while ($type = <$fh>) |
427 | { |
428 | last if $type !~ /^\s*#/; |
429 | } |
430 | chomp($type); |
431 | return if $type eq 'E'; |
445e6c97 |
432 | # Do the hash lookup once, rather than once per function call. 4% speedup. |
433 | my $type_func = $encode_types{$type}; |
017e2add |
434 | my ($def,$sym,$pages) = split(/\s+/,scalar(<$fh>)); |
14a8264b |
435 | warn "$type encoded $name\n"; |
017e2add |
436 | my $rep = ''; |
7ba7f87b |
437 | # Save a defined test by setting these to defined values. |
438 | my $min_el = ~0; # A very big integer |
439 | my $max_el = 0; # Anything must be longer than 0 |
017e2add |
440 | { |
441 | my $v = hex($def); |
445e6c97 |
442 | $rep = &$type_func($v & 0xFF, ($v >> 8) & 0xffe); |
017e2add |
443 | } |
3964a085 |
444 | my $seen; |
445 | # use -Q to silence the seen test. Makefile.PL uses this by default. |
446 | $seen = {} unless $opt{Q}; |
445e6c97 |
447 | do |
017e2add |
448 | { |
449 | my $line = <$fh>; |
450 | chomp($line); |
451 | my $page = hex($line); |
452 | my $ch = 0; |
445e6c97 |
453 | my $i = 16; |
454 | do |
017e2add |
455 | { |
445e6c97 |
456 | # So why is it 1% faster to leave the my here? |
017e2add |
457 | my $line = <$fh>; |
7ba7f87b |
458 | die "Line should be exactly 65 characters long including newline" |
459 | unless length ($line) == 65; |
460 | # Split line into groups of 4 hex digits, convert groups to ints |
445e6c97 |
461 | # This takes 65.35 |
462 | # map {hex $_} $line =~ /(....)/g |
463 | # This takes 63.75 (2.5% less time) |
464 | # unpack "n*", pack "H*", $line |
465 | # There's an implicit loop in map. Loops are bad, m'kay. Ops are bad, m'kay |
466 | # Doing it as while ($line =~ /(....)/g) took 74.63 |
467 | foreach my $val (unpack "n*", pack "H*", $line) |
017e2add |
468 | { |
e03ac092 |
469 | next if $val == 0xFFFD; |
445e6c97 |
470 | my $ech = &$type_func($ch,$page); |
017e2add |
471 | if ($val || (!$ch && !$page)) |
472 | { |
afdae191 |
473 | my $el = length($ech); |
7ba7f87b |
474 | $max_el = $el if $el > $max_el; |
475 | $min_el = $el if $el < $min_el; |
017e2add |
476 | my $uch = encode_U($val); |
3964a085 |
477 | if ($seen) { |
478 | # We're doing the test. |
479 | # We don't need to read this quickly, so storing it as a scalar, |
480 | # rather than 3 (anon array, plus the 2 scalars it holds) saves |
481 | # RAM and may make us faster on low RAM systems. [see __END__] |
482 | if (exists $seen->{$uch}) |
483 | { |
484 | warn sprintf("U%04X is %02X%02X and %04X\n", |
485 | $val,$page,$ch,$seen->{$uch}); |
486 | } |
487 | else |
488 | { |
489 | $seen->{$uch} = $page << 8 | $ch; |
490 | } |
491 | } |
eb560316 |
492 | # Passing 2 extra args each time is 3.6% slower! |
445e6c97 |
493 | # Even with having to add $fallback ||= 0 later |
494 | enter_fb0($e2u,$ech,$uch); |
495 | enter_fb0($u2e,$uch,$ech); |
017e2add |
496 | } |
497 | else |
498 | { |
499 | # No character at this position |
500 | # enter($e2u,$ech,undef,$e2u); |
501 | } |
502 | $ch++; |
503 | } |
445e6c97 |
504 | } while --$i; |
505 | } while --$pages; |
7ba7f87b |
506 | die "\$min_el=$min_el, \$max_el=$max_el - seems we read no lines" |
507 | if $min_el > $max_el; |
dcda1f94 |
508 | $encoding{$name} = [$e2u,$u2e,$rep,$min_el,$max_el]; |
017e2add |
509 | } |
510 | |
eb560316 |
511 | # my ($a,$s,$d,$t,$fb) = @_; |
512 | sub enter { |
513 | my ($current,$inbytes,$outbytes,$next,$fallback) = @_; |
514 | # state we shift to after this (multibyte) input character defaults to same |
515 | # as current state. |
516 | $next ||= $current; |
517 | # Making sure it is defined seems to be faster than {no warnings;} in |
518 | # &process, or passing it in as 0 explicity. |
445e6c97 |
519 | # XXX $fallback ||= 0; |
eb560316 |
520 | |
521 | # Start at the beginning and work forwards through the string to zero. |
522 | # effectively we are removing 1 character from the front each time |
523 | # but we don't actually edit the string. [this alone seems to be 14% speedup] |
524 | # Hence -$pos is the length of the remaining string. |
525 | my $pos = -length $inbytes; |
526 | while (1) { |
527 | my $byte = substr $inbytes, $pos, 1; |
528 | # RAW_NEXT => 0, |
529 | # RAW_IN_LEN => 1, |
530 | # RAW_OUT_BYTES => 2, |
531 | # RAW_FALLBACK => 3, |
532 | # to unicode an array would seem to be better, because the pages are dense. |
533 | # from unicode can be very sparse, favouring a hash. |
534 | # hash using the bytes (all length 1) as keys rather than ord value, |
535 | # as it's easier to sort these in &process. |
536 | |
537 | # It's faster to always add $fallback even if it's undef, rather than |
538 | # choosing between 3 and 4 element array. (hence why we set it defined |
539 | # above) |
540 | my $do_now = $current->{Raw}{$byte} ||= [{},-$pos,'',$fallback]; |
541 | # When $pos was -1 we were at the last input character. |
542 | unless (++$pos) { |
543 | $do_now->[RAW_OUT_BYTES] = $outbytes; |
544 | $do_now->[RAW_NEXT] = $next; |
545 | return; |
546 | } |
547 | # Tail recursion. The intermdiate state may not have a name yet. |
548 | $current = $do_now->[RAW_NEXT]; |
017e2add |
549 | } |
550 | } |
551 | |
445e6c97 |
552 | # This is purely for optimistation. It's just &enter hard coded for $fallback |
553 | # of 0, using only a 3 entry array ref to save memory for every entry. |
554 | sub enter_fb0 { |
555 | my ($current,$inbytes,$outbytes,$next) = @_; |
556 | $next ||= $current; |
557 | |
558 | my $pos = -length $inbytes; |
559 | while (1) { |
560 | my $byte = substr $inbytes, $pos, 1; |
561 | my $do_now = $current->{Raw}{$byte} ||= [{},-$pos,'']; |
562 | unless (++$pos) { |
563 | $do_now->[RAW_OUT_BYTES] = $outbytes; |
564 | $do_now->[RAW_NEXT] = $next; |
565 | return; |
566 | } |
567 | $current = $do_now->[RAW_NEXT]; |
568 | } |
569 | } |
b1e7e56f |
570 | |
571 | |
017e2add |
572 | sub outstring |
573 | { |
574 | my ($fh,$name,$s) = @_; |
575 | my $sym = $strings{$s}; |
b1e7e56f |
576 | if ($sym) |
577 | { |
578 | $saved += length($s); |
579 | } |
580 | else |
017e2add |
581 | { |
4cfc977c |
582 | if ($opt{'O'}) { |
583 | foreach my $o (keys %strings) |
584 | { |
445e6c97 |
585 | next unless (my $i = index($o,$s)) >= 0; |
586 | $sym = $strings{$o}; |
587 | $sym .= sprintf("+0x%02x",$i) if ($i); |
588 | $subsave += length($s); |
589 | return $strings{$s} = $sym; |
590 | } |
4cfc977c |
591 | } |
017e2add |
592 | $strings{$s} = $sym = $name; |
b1e7e56f |
593 | $strings += length($s); |
de745a2e |
594 | my $definition = sprintf "static const U8 %s[%d] = { ",$name,length($s); |
595 | # Maybe we should assert that these are all <256. |
596 | $definition .= join(',',unpack "C*",$s); |
597 | # We have a single long line. Split it at convenient commas. |
598 | $definition =~ s/(.{74,77},)/$1\n/g; |
599 | print $fh "$definition };\n\n"; |
017e2add |
600 | } |
601 | return $sym; |
602 | } |
603 | |
14a8264b |
604 | sub process |
017e2add |
605 | { |
eb560316 |
606 | my ($name,$a) = @_; |
607 | $name =~ s/\W+/_/g; |
608 | $a->{Cname} = $name; |
445e6c97 |
609 | my $raw = $a->{Raw}; |
eb560316 |
610 | my ($l, $agg_max_in, $agg_next, $agg_in_len, $agg_out_len, $agg_fallback); |
611 | my @ent; |
445e6c97 |
612 | $agg_max_in = 0; |
613 | foreach my $key (sort keys %$raw) { |
eb560316 |
614 | # RAW_NEXT => 0, |
615 | # RAW_IN_LEN => 1, |
616 | # RAW_OUT_BYTES => 2, |
617 | # RAW_FALLBACK => 3, |
445e6c97 |
618 | my ($next, $in_len, $out_bytes, $fallback) = @{$raw->{$key}}; |
eb560316 |
619 | # Now we are converting from raw to aggregate, switch from 1 byte strings |
620 | # to numbers |
621 | my $b = ord $key; |
445e6c97 |
622 | $fallback ||= 0; |
eb560316 |
623 | if ($l && |
624 | # If this == fails, we're going to reset $agg_max_in below anyway. |
625 | $b == ++$agg_max_in && |
626 | # References in numeric context give the pointer as an int. |
627 | $agg_next == $next && |
628 | $agg_in_len == $in_len && |
629 | $agg_out_len == length $out_bytes && |
630 | $agg_fallback == $fallback |
631 | # && length($l->[AGG_OUT_BYTES]) < 16 |
632 | ) { |
633 | # my $i = ord($b)-ord($l->[AGG_MIN_IN]); |
634 | # we can aggregate this byte onto the end. |
635 | $l->[AGG_MAX_IN] = $b; |
636 | $l->[AGG_OUT_BYTES] .= $out_bytes; |
637 | } else { |
638 | # AGG_MIN_IN => 0, |
639 | # AGG_MAX_IN => 1, |
640 | # AGG_OUT_BYTES => 2, |
641 | # AGG_NEXT => 3, |
642 | # AGG_IN_LEN => 4, |
643 | # AGG_OUT_LEN => 5, |
644 | # AGG_FALLBACK => 6, |
645 | # Reset the last thing we saw, plus set 5 lexicals to save some derefs. |
646 | # (only gains .6% on euc-jp -- is it worth it?) |
647 | push @ent, $l = [$b, $agg_max_in = $b, $out_bytes, $agg_next = $next, |
648 | $agg_in_len = $in_len, $agg_out_len = length $out_bytes, |
649 | $agg_fallback = $fallback]; |
017e2add |
650 | } |
eb560316 |
651 | if (exists $next->{Cname}) { |
652 | $next->{'Forward'} = 1 if $next != $a; |
653 | } else { |
654 | process(sprintf("%s_%02x",$name,$b),$next); |
017e2add |
655 | } |
656 | } |
eb560316 |
657 | # encengine.c rules say that last entry must be for 255 |
445e6c97 |
658 | if ($agg_max_in < 255) { |
659 | push @ent, [1+$agg_max_in, 255,undef,$a,0,0]; |
017e2add |
660 | } |
eb560316 |
661 | $a->{'Entries'} = \@ent; |
14a8264b |
662 | } |
663 | |
664 | sub outtable |
665 | { |
666 | my ($fh,$a) = @_; |
667 | my $name = $a->{'Cname'}; |
017e2add |
668 | # String tables |
14a8264b |
669 | foreach my $b (@{$a->{'Entries'}}) |
017e2add |
670 | { |
eb560316 |
671 | next unless $b->[AGG_OUT_LEN]; |
672 | my $s = $b->[AGG_MIN_IN]; |
673 | my $e = $b->[AGG_MAX_IN]; |
674 | outstring($fh,sprintf("%s__%02x_%02x",$name,$s,$e),$b->[AGG_OUT_BYTES]); |
017e2add |
675 | } |
14a8264b |
676 | if ($a->{'Forward'}) |
677 | { |
678 | print $fh "\nstatic encpage_t $name\[",scalar(@{$a->{'Entries'}}),"];\n"; |
679 | } |
680 | $a->{'Done'} = 1; |
681 | foreach my $b (@{$a->{'Entries'}}) |
682 | { |
eb560316 |
683 | my ($s,$e,$out,$t,$end,$l) = @$b; |
14a8264b |
684 | outtable($fh,$t) unless $t->{'Done'}; |
685 | } |
686 | print $fh "\nstatic encpage_t $name\[",scalar(@{$a->{'Entries'}}),"] = {\n"; |
687 | foreach my $b (@{$a->{'Entries'}}) |
017e2add |
688 | { |
eb560316 |
689 | my ($sc,$ec,$out,$t,$end,$l,$fb) = @$b; |
e0c49a6b |
690 | $end |= 0x80 if $fb; |
017e2add |
691 | print $fh "{"; |
692 | if ($l) |
693 | { |
694 | printf $fh outstring($fh,'',$out); |
695 | } |
696 | else |
697 | { |
698 | print $fh "0"; |
699 | } |
700 | print $fh ",",$t->{Cname}; |
2f2b4ff2 |
701 | printf $fh ",0x%02x,0x%02x,$l,$end},\n",$sc,$ec; |
017e2add |
702 | } |
14a8264b |
703 | print $fh "};\n"; |
704 | } |
705 | |
706 | sub output |
707 | { |
708 | my ($fh,$name,$a) = @_; |
709 | process($name,$a); |
710 | # Sub-tables |
711 | outtable($fh,$a); |
017e2add |
712 | } |
713 | |
e0c49a6b |
714 | sub output_enc |
715 | { |
716 | my ($fh,$name,$a) = @_; |
eb560316 |
717 | die "Changed - fix me for new structure"; |
e0c49a6b |
718 | foreach my $b (sort keys %$a) |
719 | { |
720 | my ($s,$e,$out,$t,$end,$l,$fb) = @{$a->{$b}}; |
721 | } |
722 | } |
723 | |
724 | sub decode_U |
725 | { |
726 | my $s = shift; |
e0c49a6b |
727 | } |
728 | |
f39fb8cc |
729 | my @uname; |
730 | sub char_names |
731 | { |
9fb51cbc |
732 | my $s = do "unicore/Name.pl"; |
733 | die "char_names: unicore/Name.pl: $!\n" unless defined $s; |
f39fb8cc |
734 | pos($s) = 0; |
735 | while ($s =~ /\G([0-9a-f]+)\t([0-9a-f]*)\t(.*?)\s*\n/igc) |
736 | { |
737 | my $name = $3; |
738 | my $s = hex($1); |
739 | last if $s >= 0x10000; |
740 | my $e = length($2) ? hex($2) : $s; |
741 | for (my $i = $s; $i <= $e; $i++) |
742 | { |
743 | $uname[$i] = $name; |
744 | # print sprintf("U%04X $name\n",$i); |
745 | } |
746 | } |
747 | } |
748 | |
e0c49a6b |
749 | sub output_ucm_page |
750 | { |
a8373f85 |
751 | my ($cmap,$a,$t,$pre) = @_; |
752 | # warn sprintf("Page %x\n",$pre); |
753 | my $raw = $t->{Raw}; |
754 | foreach my $key (sort keys %$raw) { |
755 | # RAW_NEXT => 0, |
756 | # RAW_IN_LEN => 1, |
757 | # RAW_OUT_BYTES => 2, |
758 | # RAW_FALLBACK => 3, |
759 | my ($next, $in_len, $out_bytes, $fallback) = @{$raw->{$key}}; |
760 | my $u = ord $key; |
761 | $fallback ||= 0; |
762 | |
763 | if ($next != $a && $next != $t) { |
764 | output_ucm_page($cmap,$a,$next,(($pre|($u &0x3F)) << 6)&0xFFFF); |
765 | } elsif (length $out_bytes) { |
766 | if ($pre) { |
767 | $u = $pre|($u &0x3f); |
e0c49a6b |
768 | } |
a8373f85 |
769 | my $s = sprintf "<U%04X> ",$u; |
770 | #foreach my $c (split(//,$out_bytes)) { |
771 | # $s .= sprintf "\\x%02X",ord($c); |
772 | #} |
3964a085 |
773 | # 9.5% faster changing that loop to this: |
a8373f85 |
774 | $s .= sprintf +("\\x%02X" x length $out_bytes), unpack "C*", $out_bytes; |
775 | $s .= sprintf " |%d # %s\n",($fallback ? 1 : 0),$uname[$u]; |
776 | push(@$cmap,$s); |
777 | } else { |
778 | warn join(',',$u, @{$raw->{$key}},$a,$t); |
e0c49a6b |
779 | } |
780 | } |
781 | } |
782 | |
783 | sub output_ucm |
784 | { |
f39fb8cc |
785 | my ($fh,$name,$h,$rep,$min_el,$max_el) = @_; |
df1df145 |
786 | print $fh "# $0 @orig_ARGV\n" unless $opt{'q'}; |
afdae191 |
787 | print $fh "<code_set_name> \"$name\"\n"; |
f39fb8cc |
788 | char_names(); |
afdae191 |
789 | if (defined $min_el) |
790 | { |
791 | print $fh "<mb_cur_min> $min_el\n"; |
792 | } |
793 | if (defined $max_el) |
794 | { |
795 | print $fh "<mb_cur_max> $max_el\n"; |
796 | } |
797 | if (defined $rep) |
798 | { |
799 | print $fh "<subchar> "; |
800 | foreach my $c (split(//,$rep)) |
801 | { |
802 | printf $fh "\\x%02X",ord($c); |
803 | } |
804 | print $fh "\n"; |
805 | } |
f39fb8cc |
806 | my @cmap; |
807 | output_ucm_page(\@cmap,$h,$h,0); |
afdae191 |
808 | print $fh "#\nCHARMAP\n"; |
f39fb8cc |
809 | foreach my $line (sort { substr($a,8) cmp substr($b,8) } @cmap) |
810 | { |
811 | print $fh $line; |
812 | } |
e0c49a6b |
813 | print $fh "END CHARMAP\n"; |
814 | } |
017e2add |
815 | |
445e6c97 |
816 | |
817 | __END__ |
818 | With %seen holding array refs: |
819 | |
820 | 865.66 real 28.80 user 8.79 sys |
821 | 7904 maximum resident set size |
822 | 1356 average shared memory size |
823 | 18566 average unshared data size |
824 | 229 average unshared stack size |
825 | 46080 page reclaims |
826 | 33373 page faults |
827 | |
828 | With %seen holding simple scalars: |
829 | |
830 | 342.16 real 27.11 user 3.54 sys |
831 | 8388 maximum resident set size |
832 | 1394 average shared memory size |
833 | 14969 average unshared data size |
834 | 236 average unshared stack size |
835 | 28159 page reclaims |
836 | 9839 page faults |
837 | |
838 | Yes, 5 minutes is faster than 15. Above is for CP936 in CN. Only difference is |
839 | how %seen is storing things its seen. So it is pathalogically bad on a 16M |
840 | RAM machine, but it's going to help even on modern machines. |
841 | Swapping is bad, m'kay :-) |