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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_cp51932.h"
36:
37: #include "unicode_table_cp932_ext.h"
38: #include "unicode_table_jis.h"
39: #include "cp932_table.h"
40:
41: static int mbfl_filt_ident_cp51932(int c, mbfl_identify_filter *filter);
42:
43: static const unsigned char mblen_table_eucjp[] = { /* 0xA1-0xFE */
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: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
52: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1,
53: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
54: 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
55: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
56: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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: 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
60: };
61:
62:
63: static const char *mbfl_encoding_cp51932_aliases[] = {"cp51932", NULL};
64:
65: const struct mbfl_identify_vtbl vtbl_identify_cp51932 = {
66: mbfl_no_encoding_cp51932,
67: mbfl_filt_ident_common_ctor,
68: mbfl_filt_ident_common_dtor,
69: mbfl_filt_ident_cp51932
70: };
71:
72: const mbfl_encoding mbfl_encoding_cp51932 = {
73: mbfl_no_encoding_cp51932,
74: "CP51932",
75: "CP51932",
76: (const char *(*)[])&mbfl_encoding_cp51932_aliases,
77: mblen_table_eucjp,
78: MBFL_ENCTYPE_MBCS
79: };
80:
81: const struct mbfl_convert_vtbl vtbl_cp51932_wchar = {
82: mbfl_no_encoding_cp51932,
83: mbfl_no_encoding_wchar,
84: mbfl_filt_conv_common_ctor,
85: mbfl_filt_conv_common_dtor,
86: mbfl_filt_conv_cp51932_wchar,
87: mbfl_filt_conv_common_flush
88: };
89:
90: const struct mbfl_convert_vtbl vtbl_wchar_cp51932 = {
91: mbfl_no_encoding_wchar,
92: mbfl_no_encoding_cp51932,
93: mbfl_filt_conv_common_ctor,
94: mbfl_filt_conv_common_dtor,
95: mbfl_filt_conv_wchar_cp51932,
96: mbfl_filt_conv_common_flush
97: };
98:
99: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
100:
101: #define sjistoidx(c1, c2) \
102: (((c1) > 0x9f) \
103: ? (((c1) - 0xc1) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)) \
104: : (((c1) - 0x81) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)))
105: #define idxtoeuc1(c) (((c) / 94) + 0xa1)
106: #define idxtoeuc2(c) (((c) % 94) + 0xa1)
107:
108: /*
109: * cp51932 => wchar
110: */
111: int
112: mbfl_filt_conv_cp51932_wchar(int c, mbfl_convert_filter *filter)
113: {
114: int c1, s, w;
115:
116: switch (filter->status) {
117: case 0:
118: if (c >= 0 && c < 0x80) { /* latin */
119: CK((*filter->output_function)(c, filter->data));
120: } else if (c > 0xa0 && c < 0xff) { /* CP932 first char */
121: filter->status = 1;
122: filter->cache = c;
123: } else if (c == 0x8e) { /* kana first char */
124: filter->status = 2;
125: } else {
126: w = c & MBFL_WCSGROUP_MASK;
127: w |= MBFL_WCSGROUP_THROUGH;
128: CK((*filter->output_function)(w, filter->data));
129: }
130: break;
131:
132: case 1: /* got first half */
133: filter->status = 0;
134: c1 = filter->cache;
135: if (c > 0xa0 && c < 0xff) {
136: w = 0;
137: s = (c1 - 0xa1)*94 + c - 0xa1;
138: if (s <= 137) {
139: if (s == 31) {
140: w = 0xff3c; /* FULLWIDTH REVERSE SOLIDUS */
141: } else if (s == 32) {
142: w = 0xff5e; /* FULLWIDTH TILDE */
143: } else if (s == 33) {
144: w = 0x2225; /* PARALLEL TO */
145: } else if (s == 60) {
146: w = 0xff0d; /* FULLWIDTH HYPHEN-MINUS */
147: } else if (s == 80) {
148: w = 0xffe0; /* FULLWIDTH CENT SIGN */
149: } else if (s == 81) {
150: w = 0xffe1; /* FULLWIDTH POUND SIGN */
151: } else if (s == 137) {
152: w = 0xffe2; /* FULLWIDTH NOT SIGN */
153: }
154: }
155: if (w == 0) {
156: if (s >= cp932ext1_ucs_table_min && s < cp932ext1_ucs_table_max) { /* vendor ext1 (13ku) */
157: w = cp932ext1_ucs_table[s - cp932ext1_ucs_table_min];
158: } else if (s >= 0 && s < jisx0208_ucs_table_size) { /* X 0208 */
159: w = jisx0208_ucs_table[s];
160: } else if (s >= cp932ext2_ucs_table_min && s < cp932ext2_ucs_table_max) { /* vendor ext2 (89ku - 92ku) */
161: w = cp932ext2_ucs_table[s - cp932ext2_ucs_table_min];
162: }
163: }
164: if (w <= 0) {
165: w = ((c1 & 0x7f) << 8) | (c & 0x7f);
166: w &= MBFL_WCSPLANE_MASK;
167: w |= MBFL_WCSPLANE_WINCP932;
168: }
169: CK((*filter->output_function)(w, filter->data));
170: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
171: CK((*filter->output_function)(c, filter->data));
172: } else {
173: w = (c1 << 8) | c;
174: w &= MBFL_WCSGROUP_MASK;
175: w |= MBFL_WCSGROUP_THROUGH;
176: CK((*filter->output_function)(w, filter->data));
177: }
178: break;
179:
180: case 2: /* got 0x8e, X0201 kana */
181: filter->status = 0;
182: if (c > 0xa0 && c < 0xe0) {
183: w = 0xfec0 + c;
184: CK((*filter->output_function)(w, filter->data));
185: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
186: CK((*filter->output_function)(c, filter->data));
187: } else {
188: w = 0x8e00 | c;
189: w &= MBFL_WCSGROUP_MASK;
190: w |= MBFL_WCSGROUP_THROUGH;
191: CK((*filter->output_function)(w, filter->data));
192: }
193: break;
194:
195: default:
196: filter->status = 0;
197: break;
198: }
199:
200: return c;
201: }
202:
203: /*
204: * wchar => cp51932
205: */
206: int
207: mbfl_filt_conv_wchar_cp51932(int c, mbfl_convert_filter *filter)
208: {
209: int c1, c2, s1;
210:
211: s1 = 0;
212: if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
213: s1 = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
214: } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
215: s1 = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
216: } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
217: s1 = ucs_i_jis_table[c - ucs_i_jis_table_min];
218: } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
219: s1 = ucs_r_jis_table[c - ucs_r_jis_table_min];
220: }
221: if (s1 >= 0x8080) s1 = -1; /* we don't support JIS X0213 */
222: if (s1 <= 0) {
223: c1 = c & ~MBFL_WCSPLANE_MASK;
224: if (c1 == MBFL_WCSPLANE_WINCP932) {
225: s1 = c & MBFL_WCSPLANE_MASK;
226: if (s1 >= ((85 + 0x20) << 8)) { /* 85ku - 120ku */
227: s1 = -1;
228: }
229: } else if (c1 == MBFL_WCSPLANE_JIS0208) {
230: s1 = c & MBFL_WCSPLANE_MASK;
231: if ((s1 >= ((85 + 0x20) << 8) && /* 85ku - 94ku */
232: s1 <= ((88 + 0x20) << 8)) ||/* IBM extension */
233: (s1 >= ((93 + 0x20) << 8) && /* 89ku - 92ku */
234: s1 <= ((94 + 0x20) << 8))) {
235: s1 = -1;
236: }
237: } else if (c == 0xa5) { /* YEN SIGN */
238: s1 = 0x005c; /* YEN SIGN */
239: } else if (c == 0x203e) { /* OVER LINE */
240: s1 = 0x007e; /* FULLWIDTH MACRON */
241: } else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
242: s1 = 0x2140;
243: } else if (c == 0xff5e) { /* FULLWIDTH TILDE */
244: s1 = 0x2141;
245: } else if (c == 0x2225) { /* PARALLEL TO */
246: s1 = 0x2142;
247: } else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
248: s1 = 0x215d;
249: } else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
250: s1 = 0x2171;
251: } else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
252: s1 = 0x2172;
253: } else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
254: s1 = 0x224c;
255: } else {
256: s1 = -1;
257: c1 = 0;
258: c2 = cp932ext1_ucs_table_max - cp932ext1_ucs_table_min;
259: while (c1 < c2) { /* CP932 vendor ext1 (13ku) */
260: if (c == cp932ext1_ucs_table[c1]) {
261: s1 = ((c1/94 + 0x2d) << 8) + (c1%94 + 0x21);
262: break;
263: }
264: c1++;
265: }
266: if (s1 < 0) {
267: c1 = 0;
268: c2 = cp932ext2_ucs_table_max - cp932ext2_ucs_table_min;
269: while (c1 < c2) { /* CP932 vendor ext3 (115ku - 119ku) */
270: if (c == cp932ext2_ucs_table[c1]) {
271: s1 = ((c1/94 + 0x79) << 8) +(c1%94 + 0x21);
272: break;
273: }
274: c1++;
275: }
276: }
277: }
278: if (c == 0) {
279: s1 = 0;
280: } else if (s1 <= 0) {
281: s1 = -1;
282: }
283: }
284:
285: if (s1 >= 0) {
286: if (s1 < 0x80) { /* latin */
287: CK((*filter->output_function)(s1, filter->data));
288: } else if (s1 < 0x100) { /* kana */
289: CK((*filter->output_function)(0x8e, filter->data));
290: CK((*filter->output_function)(s1, filter->data));
291: } else if (s1 < 0x8080) { /* X 0208 */
292: CK((*filter->output_function)(((s1 >> 8) & 0xff) | 0x80, filter->data));
293: CK((*filter->output_function)((s1 & 0xff) | 0x80, filter->data));
294: } else {
295: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
296: CK(mbfl_filt_conv_illegal_output(c, filter));
297: }
298: }
299: } else {
300: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
301: CK(mbfl_filt_conv_illegal_output(c, filter));
302: }
303: }
304:
305: return c;
306: }
307:
308: static int mbfl_filt_ident_cp51932(int c, mbfl_identify_filter *filter)
309: {
310: switch (filter->status) {
311: case 0: /* latin */
312: if (c >= 0 && c < 0x80) { /* ok */
313: ;
314: } else if (c > 0xa0 && c < 0xff) { /* kanji first char */
315: filter->status = 1;
316: } else if (c == 0x8e) { /* kana first char */
317: filter->status = 2;
318: } else { /* bad */
319: filter->flag = 1;
320: }
321: break;
322:
323: case 1: /* got first half */
324: if (c < 0xa1 || c > 0xfe) { /* bad */
325: filter->flag = 1;
326: }
327: filter->status = 0;
328: break;
329:
330: case 2: /* got 0x8e */
331: if (c < 0xa1 || c > 0xdf) { /* bad */
332: filter->flag = 1;
333: }
334: filter->status = 0;
335: break;
336:
337: default:
338: filter->status = 0;
339: break;
340: }
341:
342: return c;
343: }
344:
345: