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Revision 1.4 - (show annotations) (download)
Sat Jul 20 08:50:01 2002 UTC (23 years ago) by wakaba
Branch: MAIN
CVS Tags: HEAD
Changes since 1.3: +1 -1 lines
FILE REMOVED
2002-07-20  Wakaba <w@suika.fam.cx>

	* JA.pm: Removed.

1
2 =head1 NAME
3
4 M17N::Code::JA --- Perl module for convertion between
5 coding systems of string written in Japanese language
6
7 =cut
8
9 package M17N::Code::JA;
10 use strict;
11 use vars qw(%re %_cp);
12
13 %re = (
14 94x1 => qr/\x1B\x28[\x40-\x7D](?:[\x21-\x7E])*/,
15 94x2 => qr/(?:\x1B\x26[\x40-\x7E])?\x1B\x24\x28?[\x40-\x5F](?:[\x21-\x7E][\x21-\x7E])*/,
16 96x1 => qr/\x1B\x2C[\x40-\x7D](?:[\x20-\x7F])*/,
17 utf8 => qr/\x1B\x25(?:\x47|\x2F[\x47-\x49])(?:[\x20-\x7F]|(?:[\xC0-\xFD][\x80-\xBF]+))*\x1B\x25\x40/,
18 M_94x1 => qr/\x1B\x28([\x40-\x7D])((?:[\x21-\x7E])*)/,
19 M_94x2 => qr/(?:\x1B\x26([\x40-\x7E]))?\x1B\x24\x28?([\x40-\x5F])((?:[\x21-\x7E][\x21-\x7E])*)/,
20 M_96x1 => qr/\x1B\x2C([\x40-\x7D])((?:[\x20-\x7F])*)/,
21 M_utf8 => qr/\x1B\x25(?:\x47|\x2F[\x47-\x49])((?:[\x20-\x7F]|(?:[\xC0-\xFD][\x80-\xBF]+))*)\x1B\x25\x40/,
22 );
23 %_cp = (
24 94x1 => 0xE90940,
25 94x2 => 0xE9F6C0,
26 96x1 => 0xE926A0,
27 jisx02081990 => 0xE9F6C0 + 94*94*79,
28 ## (0xFC - 0x3F - 1) * (0xFC - 0xEF) = 2444
29 x_cp932 => 0xE000, x_cp932_last => 0xE000 + 2443,
30 x_imode_doti => 0xFE000,
31 x_jsky => 0xFFB00,
32 );
33 %_cp = (%_cp,
34 jisx0201kana => $_cp{94x1} + 94 * (0x49-0x30),
35 jisx0201kana_last1 => $_cp{94x1} + 94 * (0x49-0x30+1) -0x21,
36 jisx0201kana_last => $_cp{94x1} + 94 * (0x49-0x30+1) -1,
37 jisx0201latin => $_cp{94x1} + 94 * (0x4A-0x30),
38 jisx0201latin_last => $_cp{94x1} + 94 * (0x4A-0x30+1) -1,
39 jisx02081978 => $_cp{94x2} + 94*94 * (0x40-0x30),
40 jisx02081978_last => $_cp{94x2} + 94*94 * (0x40-0x30+1) -1,
41 jisx02081983 => $_cp{94x2} + 94*94 * (0x42-0x30),
42 jisx02081983_last => $_cp{94x2} + 94*94 * (0x42-0x30+1) -1,
43 jisx02081990_last => $_cp{jisx02081990} + 94*94 -1,
44 jisx02121990 => $_cp{94x2} + 94*94 * (0x44-0x30),
45 jisx02121990_last => $_cp{94x2} + 94*94 * (0x44-0x30+1) -1,
46 jisx02132000_1 => $_cp{94x2} + 94*94 * (0x4F-0x30),
47 jisx02132000_1_last => $_cp{94x2} + 94*94 * (0x4F-0x30+1) -1,
48 jisx02132000_2 => $_cp{94x2} + 94*94 * (0x50-0x30),
49 jisx02132000_2_last => $_cp{94x2} + 94*94 * (0x50-0x30+1) -1,
50 ## (0xF7 - 0xEF - 1) * (0xFC - 0xEF) = 1316
51 x_doti => $_cp{x_imode_doti},
52 x_doti_last => $_cp{x_imode_doti} + 1316-1,
53 x_imode => $_cp{x_imode_doti} + 1316,
54 x_imode_last => $_cp{x_imode_doti} + 2443,
55 );
56 my %SJIS_G3_to_KUe = ( ## KU-1
57 0xF0 => 7, 0xF1 => 3, 0xF2 => 11, 0xF3 => 13,
58 0xF4 => 77, 0xF5 => 79, 0xF6 => 81, 0xF7 => 83,
59 0xF8 => 85, 0xF9 => 87, 0xFA => 89, 0xFB => 91,
60 0xFC => 93,
61 );
62 my %SJIS_G3_to_KUo = ( ## KU-1
63 0xF0 => 0, 0xF1 => 2, 0xF2 => 4, 0xF3 => 12,
64 0xF4 => 14, 0xF5 => 78, 0xF6 => 80, 0xF7 => 82,
65 0xF8 => 84, 0xF9 => 86, 0xFA => 88, 0xFB => 90,
66 0xFC => 92,
67 ); ## KU-1
68 my %_KU_to_SJIS_G3 = reverse (%SJIS_G3_to_KUe, %SJIS_G3_to_KUo);
69
70 my %_charset_name_n11n_table = (
71 ascii => 'us-ascii',
72 euc => 'euc-jp',
73 'euc-japan' => 'euc-jp',
74 'euc-jisx0208' => 'euc-jp',
75 'euc-jisx0213' => ['euc-jp', 2000],
76 jis => 'junet',
77 'shift-jis' => 'shift_jis',
78 'shift-jisx0213' => ['shift_jis', 2000],
79 shift_jisx0213 => ['shift_jis', 2000],
80 sjis => 'shift_jis',
81 'sjis-doti' => ['shift_jis', 1997, 'doti'],
82 'sjis-imode' => ['shift_jis', 1997, 'imode'],
83 'sjis-jsky' => ['shift_jis', 1997, 'jsky'],
84 'unicode-2-0-utf-8' => 'utf-8',
85 utf8 => 'utf-8',
86 'utf-8n' => 'utf-8',
87 'x-euc-jisx0213' => ['euc-jp', 2000],
88 'x-euc-jp' => 'euc-jp',
89 'x-shift_jisx0213' => ['shift_jis', 2000],
90 'x-sjis' => 'shift_jis',
91 'x-sjis-doti' => ['shift_jis', 1997, 'doti'],
92 'x-sjis-imode' => ['shift_jis', 1997, 'imode'],
93 'x-sjis-jsky' => ['shift_jis', 1997, 'jsky'],
94 );
95 sub _charset_name_n11n ($;$) {
96 my ($name, $year, $ext) = (shift, shift, lc shift);
97 $name = $_charset_name_n11n_table{lc $name} || $name;
98 if (ref $name eq 'ARRAY') {
99 ($name, $year, $ext) = @$name;
100 }
101 (lc $name, $year, $ext);
102 }
103
104 =head2 convert ($string, $output_code, $input_code, $options)
105
106 Convert coded charset of string.
107
108 =cut
109
110 sub convert ($;$$$) {
111 my ($string, $o_code, $i_code, $options) = @_;
112 my ($i_edition, $o_edition, $i_ext, $o_ext);
113 ($i_code, $i_edition, $i_ext) = _charset_name_n11n ($i_code);
114 ($o_code, $o_edition, $o_ext) = _charset_name_n11n ($o_code || "junet");
115 if ($i_code eq "euc-jp") {
116 eucjapan_to_internal ($string, -edition => $i_edition, -extension => $i_ext);
117 } elsif ($i_code eq "junet" || $i_code =~ /^iso-2022-jp/
118 || $i_code eq 'us-ascii') {
119 junet_to_internal ($string);
120 } elsif ($i_code eq "shift_jis") {
121 shiftjis_to_internal ($string, -edition => $i_edition, -extension => $i_ext);
122 }
123
124 if ($o_code eq "euc-jp") {
125 internal_to_eucjapan ($string, -edition => $o_edition, -extension => $o_ext);
126 } elsif ($o_code eq "junet" || $o_code =~ /^iso-2022-jp/
127 || $o_code eq 'us-ascii') {
128 internal_to_junet ($string);
129 } elsif ($o_code eq "shift_jis") {
130 internal_to_shiftjis ($string, -edition => $o_edition, -extension => $o_ext);
131 }
132 }
133
134 =head2 junet_to_internal ($string)
135
136 Convert junet coded string to internal coded string.
137
138 =cut
139
140 sub junet_to_internal ($) {
141 my $s = shift;
142 #$s = \$s unless ref $s;
143 $s =~ s{
144 ($re{94x1} | $re{94x2} | $re{96x1} | $re{utf8})
145 }{
146 my $st = $1;
147 if ($st =~ /$re{M_94x1}/) {
148 my ($f, $str) = ($1, $2);
149 $f = unpack 'C', $f;
150 $f = $f == 0x42 ? 0x21 : $_cp{94x1} + 94 * ($f - 0x30);
151 $str =~ s{([\x21-\x7E])}{
152 _u8($f + unpack('C', $1) - 0x21);
153 }goesx;
154 $st = $str;
155 } elsif ($st =~ /$re{M_94x2}/) {
156 my ($rev, $f, $str) = ($1, $2, $3);
157 if ($rev eq '@' && $f eq 'B') {
158 $f = $_cp{jisx02081990};
159 } else {
160 $f = unpack 'C', $f;
161 $f = $_cp{94x2} + 94*94 * ($f - 0x30);
162 }
163 $str =~ s{([\x21-\x7E])([\x21-\x7E])}{
164 _u8($f + (unpack('C', $1) - 0x21)*94 + unpack('C', $2) - 0x21);
165 }goesx;
166 $st = $str;
167 } elsif ($st =~ /$re{M_96x1}/) {
168 my ($f, $str) = ($1, $2);
169 $f = unpack 'C', $f;
170 $f = $f == 0x41 ? 0xA0 : $_cp{96x1} + 96 * ($f - 0x30);
171 $str =~ s{([\x20-\x7F])}{
172 _u8($f + unpack('C', $1) - 0x20);
173 }goesx;
174 $st = $str;
175 } elsif ($st =~ /$re{M_utf8}/) {
176 $st = $1;
177 }
178 $st;
179 }goesx;
180 $s;
181 }
182
183 sub _u8 ($) {
184 my ($ret, $uc);
185 $uc = shift;
186 if ($uc < 0x80) { ## 1 byte
187 $ret .= chr($uc);
188 } elsif ($uc < 0x800) { ## 2 byte
189 $ret .= chr(0xC0 | ($uc >> 6))
190 . chr(0x80 | ($uc & 0x3F));
191 } elsif ($uc < 0x10000) { ## 3 byte
192 $ret .= chr(0xE0 | ($uc >> 12) )
193 . chr(0x80 | (($uc >> 6) & 0x3F))
194 . chr(0x80 | ($uc & 0x3F) );
195 } elsif ($uc < 0x200000) { ## 4 byte
196 $ret .= chr( 240 | ($uc >> 18) )
197 . chr(0x80 | (($uc >> 12) & 0x3F))
198 . chr(0x80 | (($uc >> 6) & 0x3F))
199 . chr(0x80 | ($uc & 0x3F) );
200 } elsif ($uc < 0x4000000) { ## 5 byte
201 $ret .= chr( 248 | ($uc >> 24) )
202 . chr(0x80 | (($uc >> 18) & 0x3F))
203 . chr(0x80 | (($uc >> 12) & 0x3F))
204 . chr(0x80 | (($uc >> 6) & 0x3F))
205 . chr(0x80 | ($uc & 0x3F) );
206 } elsif ($uc < 0x80000000) { ## 6 byte
207 $ret .= chr( 252 | ($uc >> 30) )
208 . chr(0x80 | (($uc >> 24) & 0x3F))
209 . chr(0x80 | (($uc >> 18) & 0x3F))
210 . chr(0x80 | (($uc >> 12) & 0x3F))
211 . chr(0x80 | (($uc >> 6) & 0x3F))
212 . chr(0x80 | ($uc & 0x3F) );
213 }
214 $ret;
215 }
216
217 sub _ucode ($) {
218 my $s = shift;
219 return unpack("C", $s) if length($s) < 2;
220 my ($iterations, $c, @c)
221 = (0, unpack("C", substr($s, 0, 1)), unpack('C*', substr($s, 1)));
222 if (($c & 0xFE) == 0xFC) {
223 $c = ($c & 0x01);
224 $iterations = 5;
225 } elsif (($c & 0xFC) == 0xF8) {
226 $c = ($c & 0x03);
227 $iterations = 4;
228 } elsif (($c & 0xF8) == 0xF0) {
229 $c = ($c & 0x07);
230 $iterations = 3;
231 } elsif (($c & 0xF0) == 0xE0) {
232 $c = ($c & 0x0F);
233 $iterations = 2;
234 } elsif (($c & 0xE0) == 0xC0) {
235 $c = ($c & 0x1F);
236 $iterations = 1;
237 }
238 if ($iterations == $#c+1) {
239 for (my $i = 0; $i < $iterations; $i++) {
240 $c = ($c << 6);
241 $c = ($c | ($c[$i] & 0x3F));
242 }
243 }
244 $c;
245 }
246
247 =head2 internal_to_eucjapan ($string, [%options])
248
249 Convert internal coded string to euc-japan coded string.
250
251 =head3 Example
252
253 internal_to_eucjapan (\$s, jisx0201kana => 1);
254
255 =cut
256
257 sub internal_to_eucjapan ($;%) {
258 my $s = shift;
259 #$s = \$s unless ref $s;
260 my %output = @_;
261 my $year = $output{edition} || -1; ## -1 (= all unify), 1983, 1990 = 1997, 2000
262 $output{jisx02081978} = 1 if $year < 1983;
263 $output{jisx02081983} = 1 if $year == -1 || (1983 <= $year && $year < 1990);
264 $output{jisx02081990} = 1 if $year == -1 || (1990 <= $year && $year < 2000);
265 $output{jisx02121990} = 1 if $year == -1 || (1990 <= $year && $year < 2000);
266 $output{jisx02132000_1} = 1 if $year == -1 || (2000 <= $year);
267 $output{jisx02132000_2} = 1 if $year == -1 || (2000 <= $year);
268 $output{undefchar} ||= "\xA2\xAE";
269 $s =~ s{([\xC0-\xFF][\x80-\xBF]*)}{
270 my $char = $1; my $code = _ucode($char); my $ret = "";
271 if ($code < 0x7F) { ## G0 = ASCII
272 $ret = pack("C", $code);
273 } elsif ($output{jisx0201latin} && $_cp{jisx0201latin} < $code
274 && $code < $_cp{jisx0201latin_last}) { ## G0 = JIS X 0201 latin
275 $ret = pack("C", $code - $_cp{jisx0201latin} + 0x21);
276 } elsif ($output{jisx02081978}
277 && ($_cp{jisx02081978} < $code && $code < $_cp{jisx02081978_last})
278 ) { ## G1 = JIS X 0208-1978
279 my $ku = $code - $_cp{jisx02081978};
280 my $ten = ($ku % 94) + 0xA1; $ku = int($ku / 94) + 0xA1;
281 $ret = pack("CC", $ku, $ten);
282 } elsif ($output{jisx02081983}
283 && ($_cp{jisx02081983} < $code && $code < $_cp{jisx02081983_last})
284 ) { ## G1 = JIS X 0208-1983
285 my $ku = $code - $_cp{jisx02081983};
286 my $ten = ($ku % 94) + 0xA1; $ku = int($ku / 94) + 0xA1;
287 $ret = pack("CC", $ku, $ten);
288 } elsif ($output{jisx02081990}
289 && ($_cp{jisx02081990} < $code && $code < $_cp{jisx02081990_last})
290 ) { ## G1 = JIS X 0208-1990 / JIS X 0208:1997
291 my $ku = $code - $_cp{jisx02081990};
292 my $ten = ($ku % 94) + 0xA1; $ku = int($ku / 94) + 0xA1;
293 $ret = pack("CC", $ku, $ten);
294 } elsif ($output{jisx02132000_1}
295 && ($_cp{jisx02132000_1} < $code && $code < $_cp{jisx02132000_1_last})
296 ) { ## G1 = JIS X 0213:2000 plane 1
297 my $ku = $code - $_cp{jisx02132000_1};
298 my $ten = ($ku % 94) + 0xA1; $ku = int($ku / 94) + 0xA1;
299 $ret = pack("CC", $ku, $ten);
300 } elsif ($output{jisx0201kana} && $_cp{jisx0201kana} < $code
301 && $code < $_cp{jisx0201kana_last}) { ## G2 = JIS X 0201 katakana
302 $ret = "\x8E" . pack("C", $code - $_cp{jisx0201kana} + 0xA1);
303 } elsif ($output{jisx02121990}
304 && ($_cp{jisx02121990} < $code && $code < $_cp{jisx02121990_last})
305 ) { ## G3 = JIS X 0213:2000 plane 2
306 my $ku = $code - $_cp{jisx02121990};
307 my $ten = ($ku % 94) + 0xA1; $ku = int($ku / 94) + 0xA1;
308 $ret = "\x8F" . pack("CC", $ku, $ten);
309 } elsif ($output{jisx02132000_2}
310 && ($_cp{jisx02132000_2} < $code && $code < $_cp{jisx02132000_2_last})
311 ) { ## G3 = JIS X 0213:2000 plane 2
312 my $ku = $code - $_cp{jisx02132000_2};
313 my $ten = ($ku % 94) + 0xA1; $ku = int($ku / 94) + 0xA1;
314 $ret = "\x8F" . pack("CC", $ku, $ten);
315 } else {
316 $ret = $output{undefchar};
317 }
318 $ret;
319 }goex;
320 $s;
321 }
322
323 =head2 internal_to_junet ($sering, [%option])
324
325 Convert internal coded string to junet coded string.
326
327 =head3 options
328
329 * g0_96
330 * utf8
331
332 =cut
333
334 sub internal_to_junet ($;%) {
335 my $s = shift;
336 #$s = \$s unless ref $s;
337 my %output = @_; my $mode = "\x1B\x28\x42";
338 $output{undefchar} ||= 0x3F-0x21;
339 $output{undefcharset} ||= "\x1B\x28\x42";
340 $s =~ s{([\x00-\x7F]|(?:[\xC0-\xFF][\x80-\xBF]*))}{
341 my $char = $1; my $code = _ucode($char); my $ret = "";
342 if ($code < 0x9F) { ## ASCII
343 $ret = _2022_putchar(\$mode => "\x1B\x28\x42", $code-0x21);
344 } elsif ($code < 0xFF) { ## ISO 8859-1 right half
345 $ret = _2022_putchar(\$mode => "\x1B\x2C\x41", $code-0xA0);
346 } elsif ($_cp{94x1} < $code && $code < $_cp{94x1} + 94*78 -1) {
347 ## 94 charsets
348 my $final = pack("C", int(($code - $_cp{94x1}) / 94) + 0x30);
349 $ret = _2022_putchar(\$mode => "\x1B\x28".$final,
350 ($code - $_cp{94x1}) % 94);
351 } elsif ($output{g0_96}
352 && $_cp{96x1} < $code && $code < $_cp{96x1} + 96*78 -1) {
353 ## 96 charsets
354 my $final = pack("C", int(($code - $_cp{96x1}) / 96) + 0x30);
355 $ret = _2022_putchar(\$mode => "\x1B\x2C".$final,
356 ($code - $_cp{96x1}) % 96);
357 } elsif ($_cp{94x2} < $code && $code < $_cp{94x2} + 94*94*78 -1) {
358 ## 94x2 charsets
359 my $final = pack("C", int(($code - $_cp{94x2}) / (94*94)) + 0x30);
360 $ret = _2022_putchar(\$mode => "\x1B\x24\x28".$final,
361 ($code - $_cp{94x2}) % (94*94));
362 } elsif ($_cp{jisx02081990} < $code
363 && $code < $_cp{jisx02081990} + 94*94 -1) {
364 $ret = _2022_putchar(\$mode => "\x1B\x26\x40\x1B\x24B",
365 ($code - $_cp{94x2}) % (94*94));
366 } elsif ($output{utf8}) {
367 $ret = _2022_putchar(\$mode => "\x1B\x25G", $char)
368 } else {
369 $ret = _2022_putchar(\$mode => $output{undefcharset} => $output{undefchar});
370 }
371 $ret;
372 }goesx;
373 $s .= _2022_putchar (\$mode => "\x1B\x28\x42" => '');
374 $s;
375 }
376 sub _2022_putchar ($$$) {
377 my ($mode, $newmode, $char) = @_;
378 my $ret = ""; my %is;
379 $is{multibyte} = 1 if $newmode =~ /\x24/;
380 $is{set96} = 1 if $newmode =~ /\x2C/;
381 if ($$mode ne $newmode) {
382 if ($$mode eq "\x1B\x25G") {
383 $ret = "\x1B\x25\x40\x1B\x28\x42";
384 }
385 if (($is{multibyte} && $newmode ne "\x1B\x24\x28\x42"
386 && $newmode ne "\x1B\x24\x28\x40")
387 || $is{set96} || $newmode eq "\x1B\x25G") {
388 ## If it is not well-known escape sequence(s),
389 ## designate ASCII for safe.
390 $ret .= "\x1B\x28\x42" unless $$mode eq "\x1B\x28\x42";
391 }
392 if ($newmode =~ /\x1B\x24\x28([\x40-\x42])/) {
393 $ret .= "\x1B\x24$1";
394 } else {
395 $ret .= $newmode;
396 }
397 $$mode = $newmode;
398 }
399 if (length $char) {
400 if ($is{multibyte} && $is{set96}) { ## 96x2
401 $ret .= pack("CC", int($char / 96) + 0x20, ($char % 96) + 0x20);
402 } elsif ($is{multibyte}) { ## 94x2
403 $ret .= pack("CC", int($char / 94) + 0x21, ($char % 94) + 0x21);
404 } elsif ($is{set96}) { ## 96x1
405 $ret .= pack("C", $char + 0x20);
406 } elsif ($newmode eq "\x1B\x25G") { ## utf-8
407 $ret .= $char; ## if utf-8, $char is char itself!
408 } else { ## 94x1
409 $ret .= pack("C", $char + 0x21);
410 }
411 }
412 $ret;
413 }
414
415 sub eucjapan_to_internal ($;%) {
416 my $s = shift;
417 my %option = @_;
418 my $year = $option{edition} || 2000; ## 1978, 1983, 1990=1997, 2000
419 $option{G0start} ||= 0x21; $option{G2start} ||= $_cp{jisx0201kana};
420 if ($option{G1start} && $option{G3start}) {}
421 elsif ($year < 1983)
422 {$option{G1start} ||= $_cp{jisx02081978}; $option{G3start} ||= -1}
423 elsif (1983 <= $year && $year < 1990)
424 {$option{G1start} ||= $_cp{jisx02081983}; $option{G3start} ||= -1}
425 elsif (1990 <= $year && $year < 2000)
426 {$option{G1start} ||= $_cp{jisx02081990}; $option{G3start} ||= -1}
427 else #elsif (2000 <= $year)
428 {$option{G1start} ||= $_cp{jisx02132000_1}; $option{G3start} ||= -1}
429 $s =~ s{([\x21-\x7E]|\x8E[\xA1-\xFE]|\x8F?[\xA1-\xFE][\xA1-\xFE])}{
430 my $char = $1; my $ret = "";
431 if ($char =~ /[\x21-\x7E]/) {
432 $ret = _u8(unpack("C", $char) - 0x21 + $option{G0start});
433 } elsif ($char =~ /\x8F/) {
434 my $ku = unpack("C", substr($char,1,1)) - 0xA1;
435 my $ten = unpack("C", substr($char,2,1)) - 0xA1;
436 if ($option{G3start} == -1) {
437 if (77 <= $ku || $ku == 0 || $ku == 2 || $ku == 3 || $ku == 4
438 || $ku == 7 || $ku == 11 || $ku == 12 || $ku == 13 || $ku == 14) {
439 $ret = _u8($ku * 94 + $ten + $_cp{jisx02132000_2});
440 } else {
441 $ret = _u8($ku * 94 + $ten + $_cp{jisx02121990});
442 }
443 } else {
444 $ret = _u8($ku * 94 + $ten + $option{G3start});
445 }
446 } elsif ($char =~ /\x8E/) {
447 $ret = _u8(unpack("C", substr($char,1,1)) - 0xA1 + $option{G2start});
448 } else {
449 my $ku = unpack("C", substr($char,0,1)) - 0xA1;
450 my $ten = unpack("C", substr($char,1,1)) - 0xA1;
451 $ret = _u8($ku * 94 + $ten + $option{G1start});
452 }
453 $ret;
454 }goex;
455 $s;
456 }
457
458 =item M17N::Code::JA::shiftjis_to_internal ($string, [%options])
459
460 Converts string from shift-jis to internal code.
461
462 Available options:
463
464 =over 4
465
466 =item -edition => 1978 / 1983 / 1990 / 2000
467
468 Edition of double byte character set (Default: 2000)
469
470 =item -extension => [none] / cp932 / mac / imode / doti / jsky
471
472 Type of private (non official) extension (Default: no private extensions)
473
474 =back
475
476 =cut
477
478 ## G0 = 0x21-0x7E
479 ## G1 = 0xA1-0xDE
480 ## G2 = 0x8141-0x9FFC, 0xE041-0xEFFC
481 ## G3 = 0xF041-0xFCFC
482 my %S2I; ## cache
483 sub shiftjis_to_internal ($;%) {
484 my $s = shift; my %o = @_;
485 my $year = $o{-edition} || 2000;
486 my $legacy = 0; ## legacy variants before X0213 G3
487 $o{-G0start} ||= 0x21; $o{-G1start} ||= $_cp{jisx0201kana};
488 if ($o{-G2start} && $o{-G3start}) {}
489 elsif ($year < 1983)
490 {$o{-G2start} ||= $_cp{jisx02081978}; $o{-G3start} ||= $_cp{jisx02132000_2}}
491 elsif (1983 <= $year && $year < 1990)
492 {$o{-G2start} ||= $_cp{jisx02081983}; $o{-G3start} ||= $_cp{jisx02132000_2}}
493 elsif (1990 <= $year && $year < 2000)
494 {$o{-G2start} ||= $_cp{jisx02081990}; $o{-G3start} ||= $_cp{jisx02132000_2}}
495 else #elsif (2000 <= $year)
496 {$o{-G2start} ||= $_cp{jisx02132000_1}; $o{-G3start} ||= $_cp{jisx02132000_2}}
497 if ($o{-extension} eq 'imode' || $o{-extension} eq 'doti') {
498 $o{-G3start} = $_cp{x_imode_doti}; $legacy = 1;
499 }
500 $s =~ s{
501 ([\x21-\x7E])
502 | ([\x81-\x9F\xE0-\xEF][\x40-\x7E\x80-\xFC])
503 | ([\xF0-\xFC][\x40-\x7E\x80-\xFC])
504 | ([\xA1-\xDF])
505 | ([\x80-\xFF])
506 }{
507 my ($g0, $g2, $g3, $g1, $broken) = ($1, $2, $3, $4, $5);
508 my $ret = '';
509 if ($g0) {
510 $S2I{$g0}->{$o{-G0start}} = _u8(unpack('C', $g0) - 0x21 + $o{-G0start})
511 unless $S2I{$g0}->{$o{-G0start}};
512 $ret = $S2I{$g0}->{$o{-G0start}};
513 } elsif ($g2) {
514 unless ($S2I{$g2}->{$o{-G2start}}) {
515 my ($f, $s) = unpack ('CC', $g2);
516 if (0x9E < $s) {
517 $f = $f * 2 - ($f >= 0xE0 ? 0x181 : 0x101); $s -= 0x9F;
518 } else {
519 $f = $f * 2 - ($f >= 0xE0 ? 0x182 : 0x102); $s -= 0x40 + ($s > 0x7F);
520 }
521 $S2I{$g2}->{$o{-G2start}} = _u8 ($f * 94 + $s + $o{-G2start});
522 }
523 $ret = $S2I{$g2}->{$o{-G2start}};
524 } elsif ($g3) {
525 unless ($S2I{$g3}->{$o{-G3start}}) {
526 my ($f, $s) = unpack ('CC', $g3);
527 if ($legacy) {
528 $s -= 0x40 + ($s > 0x7F);
529 $S2I{$g3}->{$o{-G3start}} = _u8 (($f - 0xF0) * 188 + $s + $o{-G3start});
530 } else { ## X0213
531 if (0x9F <= $s) {
532 $f = $SJIS_G3_to_KUe{$f}; $s -= 0x9F;
533 } else {
534 $f = $SJIS_G3_to_KUo{$f}; $s -= 0x40 + ($s > 0x7F);
535 }
536 $S2I{$g3}->{$o{-G3start}} = _u8 ($f * 94 + $s + $o{-G3start});
537 }
538 }
539 $ret = $S2I{$g3}->{$o{-G3start}};
540 } elsif ($g1) {
541 $S2I{$g1}->{$o{-G1start}} = _u8(unpack('C', $g1) - 0xA1 + $o{-G1start})
542 unless $S2I{$g1}->{$o{-G1start}};
543 $ret = $S2I{$g1}->{$o{-G1start}};
544 }
545 $ret;
546 }gex;
547 $s;
548 }
549
550 =item $s = M17N::Code::JA::internal_to_shiftjis ($s, [%options])
551
552 Converts internal coded string to shift-jis coded string.
553
554 =cut
555
556 my (%_I2S_1, %_I2S_2, %_I2S_2L, %_I2S); ## caches
557 sub internal_to_shiftjis ($;%) {
558 my $s = shift; my %o = @_;
559 my $year = $o{-edition}; ## 0 (= all unify), 1983, 1990 = 1997, 2000
560 $o{-x0201_latin} ||= 1; $o{-x0201_katakana} ||= 1;
561 $o{-x0208_78} = 1 if $year < 1983;
562 $o{-x0208_83} = 1 if !$year || (1983 <= $year && $year < 1990);
563 $o{-x0208_90} = 1 if !$year || (1990 <= $year && $year < 2000);
564 if (!$year || ($year >= 2000)) {
565 $o{-x0213_A0_1} = 1; $o{-x0213_A0_2} = 1;
566 }
567 if ($o{-extension}) { ## one of private extensions
568 $o{-x0213_A0_2} = 0; $o{ '-' . $o{-extension} } = 1;
569 }
570 $o{-undefchar} ||= "\x81\xAC";
571 $s =~ s{([\xC0-\xFF][\x80-\xBF]*)}{
572 my ($code, $ret) = (_ucode($1), '');
573 #if ($code < 0x7F) { ## G0 = ASCII
574 # $ret = pack("C", $code);
575 #} els
576 if ($o{-x0201_latin}
577 && $_cp{jisx0201latin} <= $code && $code < $_cp{jisx0201latin_last}) {
578 $_I2S{$code} = pack("C", $code - $_cp{jisx0201latin} + 0x21)
579 unless $_I2S{$code};
580 $ret = $_I2S{$code};
581 } elsif ($o{-x0208_78}
582 && $_cp{jisx02081978} <= $code && $code < $_cp{jisx02081978_last}) {
583 $code -= $_cp{jisx02081978};
584 unless ($_I2S_1{$code}) {
585 my ($c1, $c2) = (int($code / 94) + 0x21, ($code % 94) + 0x21);
586 $_I2S_1{$code} = pack('CC', (($c1 - 1) >> 1) + ($c1 < 0x5F ? 0x71 : 0xb1),
587 $c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E));
588 }
589 $ret = $_I2S_1{$code};
590 } elsif ($o{-x0208_83}
591 && $_cp{jisx02081983} <= $code && $code < $_cp{jisx02081983_last}) {
592 $code -= $_cp{jisx02081983};
593 unless ($_I2S_1{$code}) {
594 my ($c1, $c2) = (int($code / 94) + 0x21, ($code % 94) + 0x21);
595 $_I2S_1{$code} = pack('CC', (($c1 - 1) >> 1) + ($c1 < 0x5F ? 0x71 : 0xb1),
596 $c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E));
597 }
598 $ret = $_I2S_1{$code};
599 } elsif ($o{-x0208_90}
600 && $_cp{jisx02081990} <= $code && $code < $_cp{jisx02081990_last}) {
601 $code -= $_cp{jisx02081990};
602 unless ($_I2S_1{$code}) {
603 my ($c1, $c2) = (int($code / 94) + 0x21, ($code % 94) + 0x21);
604 $_I2S_1{$code} = pack('CC', (($c1 - 1) >> 1) + ($c1 < 0x5F ? 0x71 : 0xb1),
605 $c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E));
606 }
607 $ret = $_I2S_1{$code};
608 } elsif ($o{-x0213_A0_1}
609 && $_cp{jisx02132000_1} <=$code && $code < $_cp{jisx02132000_1_last}) {
610 $code -= $_cp{jisx02132000_1};
611 unless ($_I2S_1{$code}) {
612 my ($c1, $c2) = (int($code / 94) + 0x21, ($code % 94) + 0x21);
613 $_I2S_1{$code} = pack('CC', (($c1 - 1) >> 1) + ($c1 < 0x5F ? 0x71 : 0xb1),
614 $c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E));
615 }
616 $ret = $_I2S_1{$code};
617 } elsif ($o{-x0201_katakana}
618 && $_cp{jisx0201kana} <= $code && $code < $_cp{jisx0201kana_last1}) {
619 $_I2S{$code} = pack("C", $code - $_cp{jisx0201kana} + 0xA1)
620 unless $_I2S{$code};
621 $ret = $_I2S{$code};
622 } elsif ($o{-x0213_A0_2}
623 && ($_cp{jisx02132000_2} <= $code && $code < $_cp{jisx02132000_2_last})) {
624 $code -= $_cp{jisx02132000_2};
625 unless ($_I2S_2{$code}) {
626 my ($c1, $c2) = (int($code / 94), ($code % 94) + 0x21);
627 $_I2S_2{$code} = pack('CC', $_KU_to_SJIS_G3{ $c1 },
628 $c2 + (($c1 & 1) ? 0x7E : ($c2 < 0x60 ? 0x1F : 0x20)));
629 }
630 $ret = $_I2S_2{$code};
631 } elsif ($o{-imode} && $_cp{x_imode} <= $code && $code < $_cp{x_imode_last}) {
632 $code -= $_cp{x_imode_doti};
633 unless ($_I2S_2L{$code}) {
634 my $c2 = $code % 188; $_I2S_2L{$code} = pack('CC',
635 int($code / 188) + 0xF0, $c2 + ($c2 > 0x3E ? 0x41 : 0x40));
636 }
637 $ret = $_I2S_2L{$code};
638 } elsif ($o{-doti} && $_cp{x_doti} <= $code && $code < $_cp{x_doti_last}) {
639 $code -= $_cp{x_imode_doti};
640 unless ($_I2S_2L{$code}) {
641 my $c2 = $code % 188; $_I2S_2L{$code} = pack('CC',
642 int($code / 188) + 0xF0, $c2 + ($c2 > 0x3E ? 0x41 : 0x40));
643 }
644 $ret = $_I2S_2L{$code};
645 } else {
646 $ret = $o{-undefchar};
647 }
648 $ret;
649 }goex;
650 $s;
651 }
652
653 =head1 SEE ALSO
654
655 =over 4
656
657 =item ASTEL Emoji
658
659 <http://www.ttnet.co.jp/tokyodenwa_astel/doti/siyou/emoji.htm>
660
661 =back
662
663 =head1 LICENSE
664
665 This program is free software; you can redistribute it and/or
666 modify it under the same terms as Perl itself.
667
668 =head1 CHANGE
669
670 See F<ChangeLog>.
671 $Date: 2002/07/20 08:49:09 $
672
673 =cut
674
675 1;

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