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1.1 misho 1: /*
2: * "streamable kanji code filter and converter"
3: * Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
4: *
5: * LICENSE NOTICES
6: *
7: * This file is part of "streamable kanji code filter and converter",
8: * which is distributed under the terms of GNU Lesser General Public
9: * License (version 2) as published by the Free Software Foundation.
10: *
11: * This software is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: * GNU Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with "streamable kanji code filter and converter";
18: * if not, write to the Free Software Foundation, Inc., 59 Temple Place,
19: * Suite 330, Boston, MA 02111-1307 USA
20: *
21: * The author of this file:
22: *
23: */
24: /*
25: * the source code included in this files was separated from mbfilter_ja.c
26: * by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
27: *
28: */
29:
30: #ifdef HAVE_CONFIG_H
31: #include "config.h"
32: #endif
33:
34: #include "mbfilter.h"
35: #include "mbfilter_cp932.h"
36:
37: #include "unicode_table_cp932_ext.h"
38: #include "unicode_table_jis.h"
39:
40: static int mbfl_filt_ident_cp932(int c, mbfl_identify_filter *filter);
41:
42: static const unsigned char mblen_table_sjis[] = { /* 0x80-0x9f,0xE0-0xFF */
43: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
44: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
45: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
46: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
47: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
48: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
49: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
50: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
51: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
52: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
53: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
54: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
55: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
56: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
57: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
58: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
59: };
60:
61: static const char *mbfl_encoding_cp932_aliases[] = {"MS932", "Windows-31J", "MS_Kanji", NULL};
62:
63: const mbfl_encoding mbfl_encoding_cp932 = {
64: mbfl_no_encoding_cp932,
65: "CP932",
66: "Shift_JIS",
67: (const char *(*)[])&mbfl_encoding_cp932_aliases,
68: mblen_table_sjis,
1.1.1.2 ! misho 69: MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_GL_UNSAFE
1.1 misho 70: };
71:
72: const struct mbfl_identify_vtbl vtbl_identify_cp932 = {
73: mbfl_no_encoding_cp932,
74: mbfl_filt_ident_common_ctor,
75: mbfl_filt_ident_common_dtor,
76: mbfl_filt_ident_cp932
77: };
78:
79: const struct mbfl_convert_vtbl vtbl_cp932_wchar = {
80: mbfl_no_encoding_cp932,
81: mbfl_no_encoding_wchar,
82: mbfl_filt_conv_common_ctor,
83: mbfl_filt_conv_common_dtor,
84: mbfl_filt_conv_cp932_wchar,
85: mbfl_filt_conv_common_flush
86: };
87:
88: const struct mbfl_convert_vtbl vtbl_wchar_cp932 = {
89: mbfl_no_encoding_wchar,
90: mbfl_no_encoding_cp932,
91: mbfl_filt_conv_common_ctor,
92: mbfl_filt_conv_common_dtor,
93: mbfl_filt_conv_wchar_cp932,
94: mbfl_filt_conv_common_flush
95: };
96:
97: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
98:
99: #define SJIS_ENCODE(c1,c2,s1,s2) \
100: do { \
101: s1 = c1; \
102: s1--; \
103: s1 >>= 1; \
104: if ((c1) < 0x5f) { \
105: s1 += 0x71; \
106: } else { \
107: s1 += 0xb1; \
108: } \
109: s2 = c2; \
110: if ((c1) & 1) { \
111: if ((c2) < 0x60) { \
112: s2--; \
113: } \
114: s2 += 0x20; \
115: } else { \
116: s2 += 0x7e; \
117: } \
118: } while (0)
119:
120: #define SJIS_DECODE(c1,c2,s1,s2) \
121: do { \
122: s1 = c1; \
123: if (s1 < 0xa0) { \
124: s1 -= 0x81; \
125: } else { \
126: s1 -= 0xc1; \
127: } \
128: s1 <<= 1; \
129: s1 += 0x21; \
130: s2 = c2; \
131: if (s2 < 0x9f) { \
132: if (s2 < 0x7f) { \
133: s2++; \
134: } \
135: s2 -= 0x20; \
136: } else { \
137: s1++; \
138: s2 -= 0x7e; \
139: } \
140: } while (0)
141:
142:
143: /*
144: * SJIS-win => wchar
145: */
146: int
147: mbfl_filt_conv_cp932_wchar(int c, mbfl_convert_filter *filter)
148: {
149: int c1, s, s1, s2, w;
150:
151: switch (filter->status) {
152: case 0:
153: if (c >= 0 && c < 0x80) { /* latin */
154: CK((*filter->output_function)(c, filter->data));
155: } else if (c > 0xa0 && c < 0xe0) { /* kana */
156: CK((*filter->output_function)(0xfec0 + c, filter->data));
157: } else if (c > 0x80 && c < 0xfd && c != 0xa0) { /* kanji first char */
158: filter->status = 1;
159: filter->cache = c;
160: } else {
161: w = c & MBFL_WCSGROUP_MASK;
162: w |= MBFL_WCSGROUP_THROUGH;
163: CK((*filter->output_function)(w, filter->data));
164: }
165: break;
166:
167: case 1: /* kanji second char */
168: filter->status = 0;
169: c1 = filter->cache;
170: if (c >= 0x40 && c <= 0xfc && c != 0x7f) {
171: w = 0;
172: SJIS_DECODE(c1, c, s1, s2);
173: s = (s1 - 0x21)*94 + s2 - 0x21;
174: if (s <= 137) {
175: if (s == 31) {
176: w = 0xff3c; /* FULLWIDTH REVERSE SOLIDUS */
177: } else if (s == 32) {
178: w = 0xff5e; /* FULLWIDTH TILDE */
179: } else if (s == 33) {
180: w = 0x2225; /* PARALLEL TO */
181: } else if (s == 60) {
182: w = 0xff0d; /* FULLWIDTH HYPHEN-MINUS */
183: } else if (s == 80) {
184: w = 0xffe0; /* FULLWIDTH CENT SIGN */
185: } else if (s == 81) {
186: w = 0xffe1; /* FULLWIDTH POUND SIGN */
187: } else if (s == 137) {
188: w = 0xffe2; /* FULLWIDTH NOT SIGN */
189: }
190: }
191: if (w == 0) {
192: if (s >= cp932ext1_ucs_table_min && s < cp932ext1_ucs_table_max) { /* vendor ext1 (13ku) */
193: w = cp932ext1_ucs_table[s - cp932ext1_ucs_table_min];
194: } else if (s >= 0 && s < jisx0208_ucs_table_size) { /* X 0208 */
195: w = jisx0208_ucs_table[s];
196: } else if (s >= cp932ext2_ucs_table_min && s < cp932ext2_ucs_table_max) { /* vendor ext2 (89ku - 92ku) */
197: w = cp932ext2_ucs_table[s - cp932ext2_ucs_table_min];
198: } else if (s >= cp932ext3_ucs_table_min && s < cp932ext3_ucs_table_max) { /* vendor ext3 (115ku - 119ku) */
199: w = cp932ext3_ucs_table[s - cp932ext3_ucs_table_min];
200: } else if (s >= (94*94) && s < (114*94)) { /* user (95ku - 114ku) */
201: w = s - (94*94) + 0xe000;
202: }
203: }
204: if (w <= 0) {
205: w = (s1 << 8) | s2;
206: w &= MBFL_WCSPLANE_MASK;
207: w |= MBFL_WCSPLANE_WINCP932;
208: }
209: CK((*filter->output_function)(w, filter->data));
210: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
211: CK((*filter->output_function)(c, filter->data));
212: } else {
213: w = (c1 << 8) | c;
214: w &= MBFL_WCSGROUP_MASK;
215: w |= MBFL_WCSGROUP_THROUGH;
216: CK((*filter->output_function)(w, filter->data));
217: }
218: break;
219:
220: default:
221: filter->status = 0;
222: break;
223: }
224:
225: return c;
226: }
227:
228: /*
229: * wchar => SJIS-win
230: */
231: int
232: mbfl_filt_conv_wchar_cp932(int c, mbfl_convert_filter *filter)
233: {
234: int c1, c2, s1, s2;
235:
236: s1 = 0;
237: s2 = 0;
238: if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
239: s1 = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
240: } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
241: s1 = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
242: } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
243: s1 = ucs_i_jis_table[c - ucs_i_jis_table_min];
244: } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
245: s1 = ucs_r_jis_table[c - ucs_r_jis_table_min];
246: } else if (c >= 0xe000 && c < (0xe000 + 20*94)) { /* user (95ku - 114ku) */
247: s1 = c - 0xe000;
248: c1 = s1/94 + 0x7f;
249: c2 = s1%94 + 0x21;
250: s1 = (c1 << 8) | c2;
251: s2 = 1;
252: }
253: if (s1 <= 0) {
254: c1 = c & ~MBFL_WCSPLANE_MASK;
255: if (c1 == MBFL_WCSPLANE_WINCP932) {
256: s1 = c & MBFL_WCSPLANE_MASK;
257: s2 = 1;
258: } else if (c1 == MBFL_WCSPLANE_JIS0208) {
259: s1 = c & MBFL_WCSPLANE_MASK;
260: } else if (c1 == MBFL_WCSPLANE_JIS0212) {
261: s1 = c & MBFL_WCSPLANE_MASK;
262: s1 |= 0x8080;
263: } else if (c == 0xa5) { /* YEN SIGN */
264: s1 = 0x005c; /* YEN SIGN */
265: } else if (c == 0x203e) { /* OVER LINE */
266: s1 = 0x007e; /* FULLWIDTH MACRON */
267: } else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
268: s1 = 0x2140;
269: } else if (c == 0xff5e) { /* FULLWIDTH TILDE */
270: s1 = 0x2141;
271: } else if (c == 0x2225) { /* PARALLEL TO */
272: s1 = 0x2142;
273: } else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
274: s1 = 0x215d;
275: } else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
276: s1 = 0x2171;
277: } else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
278: s1 = 0x2172;
279: } else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
280: s1 = 0x224c;
281: }
282: }
283: if ((s1 <= 0) || (s1 >= 0x8080 && s2 == 0)) { /* not found or X 0212 */
284: s1 = -1;
285: c1 = 0;
286: c2 = cp932ext1_ucs_table_max - cp932ext1_ucs_table_min;
287: while (c1 < c2) { /* CP932 vendor ext1 (13ku) */
288: if (c == cp932ext1_ucs_table[c1]) {
289: s1 = ((c1/94 + 0x2d) << 8) + (c1%94 + 0x21);
290: break;
291: }
292: c1++;
293: }
294: if (s1 <= 0) {
295: c1 = 0;
296: c2 = cp932ext3_ucs_table_max - cp932ext3_ucs_table_min;
297: while (c1 < c2) { /* CP932 vendor ext3 (115ku - 119ku) */
298: if (c == cp932ext3_ucs_table[c1]) {
299: s1 = ((c1/94 + 0x93) << 8) + (c1%94 + 0x21);
300: break;
301: }
302: c1++;
303: }
304: }
305: if (c == 0) {
306: s1 = 0;
307: } else if (s1 <= 0) {
308: s1 = -1;
309: }
310: }
311: if (s1 >= 0) {
312: if (s1 < 0x100) { /* latin or kana */
313: CK((*filter->output_function)(s1, filter->data));
314: } else { /* kanji */
315: c1 = (s1 >> 8) & 0xff;
316: c2 = s1 & 0xff;
317: SJIS_ENCODE(c1, c2, s1, s2);
318: CK((*filter->output_function)(s1, filter->data));
319: CK((*filter->output_function)(s2, filter->data));
320: }
321: } else {
322: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
323: CK(mbfl_filt_conv_illegal_output(c, filter));
324: }
325: }
326:
327: return c;
328: }
329:
330: static int mbfl_filt_ident_cp932(int c, mbfl_identify_filter *filter)
331: {
332: if (filter->status) { /* kanji second char */
333: if (c < 0x40 || c > 0xfc || c == 0x7f) { /* bad */
334: filter->flag = 1;
335: }
336: filter->status = 0;
337: } else if (c >= 0 && c < 0x80) { /* latin ok */
338: ;
339: } else if (c > 0xa0 && c < 0xe0) { /* kana ok */
340: ;
341: } else if (c > 0x80 && c < 0xfd && c != 0xa0) { /* kanji first char */
342: filter->status = 1;
343: } else { /* bad */
344: filter->flag = 1;
345: }
346:
347: return c;
348: }
349:
350: