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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_euc_jp.h"
36:
37: #include "unicode_table_cp932_ext.h"
38: #include "unicode_table_jis.h"
39:
1.1.1.2 ! misho 40: int mbfl_filt_ident_eucjp(int c, mbfl_identify_filter *filter);
1.1 misho 41:
1.1.1.2 ! misho 42: const unsigned char mblen_table_eucjp[] = { /* 0xA1-0xFE */
1.1 misho 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: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
52: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
53: 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
54: 2, 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, 1
59: };
60:
61: static const char *mbfl_encoding_euc_jp_aliases[] = {"EUC", "EUC_JP", "eucJP", "x-euc-jp", NULL};
62:
63: const mbfl_encoding mbfl_encoding_euc_jp = {
64: mbfl_no_encoding_euc_jp,
65: "EUC-JP",
66: "EUC-JP",
67: (const char *(*)[])&mbfl_encoding_euc_jp_aliases,
68: mblen_table_eucjp,
69: MBFL_ENCTYPE_MBCS
70: };
71:
72: const struct mbfl_identify_vtbl vtbl_identify_eucjp = {
73: mbfl_no_encoding_euc_jp,
74: mbfl_filt_ident_common_ctor,
75: mbfl_filt_ident_common_dtor,
76: mbfl_filt_ident_eucjp
77: };
78:
79: const struct mbfl_convert_vtbl vtbl_eucjp_wchar = {
80: mbfl_no_encoding_euc_jp,
81: mbfl_no_encoding_wchar,
82: mbfl_filt_conv_common_ctor,
83: mbfl_filt_conv_common_dtor,
84: mbfl_filt_conv_eucjp_wchar,
85: mbfl_filt_conv_common_flush
86: };
87:
88: const struct mbfl_convert_vtbl vtbl_wchar_eucjp = {
89: mbfl_no_encoding_wchar,
90: mbfl_no_encoding_euc_jp,
91: mbfl_filt_conv_common_ctor,
92: mbfl_filt_conv_common_dtor,
93: mbfl_filt_conv_wchar_eucjp,
94: mbfl_filt_conv_common_flush
95: };
96:
97: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
98:
99: /*
100: * EUC-JP => wchar
101: */
102: int
103: mbfl_filt_conv_eucjp_wchar(int c, mbfl_convert_filter *filter)
104: {
105: int c1, s, w;
106:
107: switch (filter->status) {
108: case 0:
109: if (c >= 0 && c < 0x80) { /* latin */
110: CK((*filter->output_function)(c, filter->data));
111: } else if (c > 0xa0 && c < 0xff) { /* X 0208 first char */
112: filter->status = 1;
113: filter->cache = c;
114: } else if (c == 0x8e) { /* kana first char */
115: filter->status = 2;
116: } else if (c == 0x8f) { /* X 0212 first char */
117: filter->status = 3;
118: } else {
119: w = c & MBFL_WCSGROUP_MASK;
120: w |= MBFL_WCSGROUP_THROUGH;
121: CK((*filter->output_function)(w, filter->data));
122: }
123: break;
124:
125: case 1: /* got first half */
126: filter->status = 0;
127: c1 = filter->cache;
128: if (c > 0xa0 && c < 0xff) {
129: s = (c1 - 0xa1)*94 + c - 0xa1;
130: if (s >= 0 && s < jisx0208_ucs_table_size) {
131: w = jisx0208_ucs_table[s];
132: } else {
133: w = 0;
134: }
135: if (w <= 0) {
136: w = ((c1 & 0x7f) << 8) | (c & 0x7f);
137: w &= MBFL_WCSPLANE_MASK;
138: w |= MBFL_WCSPLANE_JIS0208;
139: }
140: CK((*filter->output_function)(w, filter->data));
141: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
142: CK((*filter->output_function)(c, filter->data));
143: } else {
144: w = (c1 << 8) | c;
145: w &= MBFL_WCSGROUP_MASK;
146: w |= MBFL_WCSGROUP_THROUGH;
147: CK((*filter->output_function)(w, filter->data));
148: }
149: break;
150:
151: case 2: /* got 0x8e */
152: filter->status = 0;
153: if (c > 0xa0 && c < 0xe0) {
154: w = 0xfec0 + c;
155: CK((*filter->output_function)(w, filter->data));
156: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
157: CK((*filter->output_function)(c, filter->data));
158: } else {
159: w = 0x8e00 | c;
160: w &= MBFL_WCSGROUP_MASK;
161: w |= MBFL_WCSGROUP_THROUGH;
162: CK((*filter->output_function)(w, filter->data));
163: }
164: break;
165:
166: case 3: /* got 0x8f, X 0212 first char */
167: if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
168: CK((*filter->output_function)(c, filter->data));
169: filter->status = 0;
170: } else {
171: filter->status++;
172: filter->cache = c;
173: }
174: break;
175: case 4: /* got 0x8f, X 0212 second char */
176: filter->status = 0;
177: c1 = filter->cache;
178: if (c1 > 0xa0 && c1 < 0xff && c > 0xa0 && c < 0xff) {
179: s = (c1 - 0xa1)*94 + c - 0xa1;
180: if (s >= 0 && s < jisx0212_ucs_table_size) {
181: w = jisx0212_ucs_table[s];
182: } else {
183: w = 0;
184: }
185: if (w <= 0) {
186: w = ((c1 & 0x7f) << 8) | (c & 0x7f);
187: w &= MBFL_WCSPLANE_MASK;
188: w |= MBFL_WCSPLANE_JIS0212;
189: }
190: CK((*filter->output_function)(w, filter->data));
191: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
192: CK((*filter->output_function)(c, filter->data));
193: } else {
194: w = (c1 << 8) | c | 0x8f0000;
195: w &= MBFL_WCSGROUP_MASK;
196: w |= MBFL_WCSGROUP_THROUGH;
197: CK((*filter->output_function)(w, filter->data));
198: }
199: break;
200:
201: default:
202: filter->status = 0;
203: break;
204: }
205:
206: return c;
207: }
208:
209: /*
210: * wchar => EUC-JP
211: */
212: int
213: mbfl_filt_conv_wchar_eucjp(int c, mbfl_convert_filter *filter)
214: {
215: int c1, s;
216:
217: s = 0;
218: if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
219: s = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
220: } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
221: s = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
222: } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
223: s = ucs_i_jis_table[c - ucs_i_jis_table_min];
224: } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
225: s = ucs_r_jis_table[c - ucs_r_jis_table_min];
226: }
227: if (s <= 0) {
228: c1 = c & ~MBFL_WCSPLANE_MASK;
229: if (c1 == MBFL_WCSPLANE_JIS0208) {
230: s = c & MBFL_WCSPLANE_MASK;
231: } else if (c1 == MBFL_WCSPLANE_JIS0212) {
232: s = c & MBFL_WCSPLANE_MASK;
233: s |= 0x8080;
234: } else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
235: s = 0x2140;
236: } else if (c == 0xff5e) { /* FULLWIDTH TILDE */
237: s = 0x2141;
238: } else if (c == 0x2225) { /* PARALLEL TO */
239: s = 0x2142;
240: } else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
241: s = 0x215d;
242: } else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
243: s = 0x2171;
244: } else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
245: s = 0x2172;
246: } else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
247: s = 0x224c;
248: }
249: if (c == 0) {
250: s = 0;
251: } else if (s <= 0) {
252: s = -1;
253: }
254: }
255: if (s >= 0) {
256: if (s < 0x80) { /* latin */
257: CK((*filter->output_function)(s, filter->data));
258: } else if (s < 0x100) { /* kana */
259: CK((*filter->output_function)(0x8e, filter->data));
260: CK((*filter->output_function)(s, filter->data));
261: } else if (s < 0x8080) { /* X 0208 */
262: CK((*filter->output_function)(((s >> 8) & 0xff) | 0x80, filter->data));
263: CK((*filter->output_function)((s & 0xff) | 0x80, filter->data));
264: } else { /* X 0212 */
265: CK((*filter->output_function)(0x8f, filter->data));
266: CK((*filter->output_function)(((s >> 8) & 0xff) | 0x80, filter->data));
267: CK((*filter->output_function)((s & 0xff) | 0x80, filter->data));
268: }
269: } else {
270: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
271: CK(mbfl_filt_conv_illegal_output(c, filter));
272: }
273: }
274:
275: return c;
276: }
277:
1.1.1.2 ! misho 278: int mbfl_filt_ident_eucjp(int c, mbfl_identify_filter *filter)
1.1 misho 279: {
280: switch (filter->status) {
281: case 0: /* latin */
282: if (c >= 0 && c < 0x80) { /* ok */
283: ;
284: } else if (c > 0xa0 && c < 0xff) { /* kanji first char */
285: filter->status = 1;
286: } else if (c == 0x8e) { /* kana first char */
287: filter->status = 2;
288: } else if (c == 0x8f) { /* X 0212 first char */
289: filter->status = 3;
290: } else { /* bad */
291: filter->flag = 1;
292: }
293: break;
294:
295: case 1: /* got first half */
296: if (c < 0xa1 || c > 0xfe) { /* bad */
297: filter->flag = 1;
298: }
299: filter->status = 0;
300: break;
301:
302: case 2: /* got 0x8e */
303: if (c < 0xa1 || c > 0xdf) { /* bad */
304: filter->flag = 1;
305: }
306: filter->status = 0;
307: break;
308:
309: case 3: /* got 0x8f */
310: if (c < 0xa1 || c > 0xfe) { /* bad */
311: filter->flag = 1;
312: }
313: filter->status++;
314: break;
315: case 4: /* got 0x8f */
316: if (c < 0xa1 || c > 0xfe) { /* bad */
317: filter->flag = 1;
318: }
319: filter->status = 0;
320: break;
321:
322: default:
323: filter->status = 0;
324: break;
325: }
326:
327: return c;
328: }
329:
330:
331: