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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_kr.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_uhc.h"
1.1.1.2 ! misho 36: #define UNICODE_TABLE_UHC_DEF
1.1 misho 37: #include "unicode_table_uhc.h"
38:
39: static int mbfl_filt_ident_uhc(int c, mbfl_identify_filter *filter);
40:
41: static const unsigned char mblen_table_uhc[] = { /* 0x81-0xFE */
42: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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: 2, 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, 1
58: };
59:
60: static const char *mbfl_encoding_uhc_aliases[] = {"CP949", NULL};
61:
62: const mbfl_encoding mbfl_encoding_uhc = {
63: mbfl_no_encoding_uhc,
64: "UHC",
65: "UHC",
66: (const char *(*)[])&mbfl_encoding_uhc_aliases,
67: mblen_table_uhc,
68: MBFL_ENCTYPE_MBCS
69: };
70:
71: const struct mbfl_identify_vtbl vtbl_identify_uhc = {
72: mbfl_no_encoding_uhc,
73: mbfl_filt_ident_common_ctor,
74: mbfl_filt_ident_common_dtor,
75: mbfl_filt_ident_uhc
76: };
77:
78: const struct mbfl_convert_vtbl vtbl_uhc_wchar = {
79: mbfl_no_encoding_uhc,
80: mbfl_no_encoding_wchar,
81: mbfl_filt_conv_common_ctor,
82: mbfl_filt_conv_common_dtor,
83: mbfl_filt_conv_uhc_wchar,
84: mbfl_filt_conv_common_flush
85: };
86:
87: const struct mbfl_convert_vtbl vtbl_wchar_uhc = {
88: mbfl_no_encoding_wchar,
89: mbfl_no_encoding_uhc,
90: mbfl_filt_conv_common_ctor,
91: mbfl_filt_conv_common_dtor,
92: mbfl_filt_conv_wchar_uhc,
93: mbfl_filt_conv_common_flush
94: };
95:
96: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
97:
98: /*
99: * UHC => wchar
100: */
101: int
102: mbfl_filt_conv_uhc_wchar(int c, mbfl_convert_filter *filter)
103: {
104: int c1, w = 0, flag = 0;
105:
106: switch (filter->status) {
107: case 0:
108: if (c >= 0 && c < 0x80) { /* latin */
109: CK((*filter->output_function)(c, filter->data));
110: } else if (c > 0x80 && c < 0xff && c != 0xc9) { /* dbcs lead byte */
111: filter->status = 1;
112: filter->cache = c;
113: } else {
114: w = c & MBFL_WCSGROUP_MASK;
115: w |= MBFL_WCSGROUP_THROUGH;
116: CK((*filter->output_function)(w, filter->data));
117: }
118: break;
119:
120: case 1: /* dbcs second byte */
121: filter->status = 0;
122: c1 = filter->cache;
123:
124: if ( c1 >= 0x81 && c1 <= 0xa0){
125: w = (c1 - 0x81)*190 + (c - 0x41);
126: if (w >= 0 && w < uhc1_ucs_table_size) {
127: flag = 1;
128: w = uhc1_ucs_table[w];
129: } else {
130: w = 0;
131: }
132: } else if ( c1 >= 0xa1 && c1 <= 0xc6){
133: w = (c1 - 0xa1)*190 + (c - 0x41);
134: if (w >= 0 && w < uhc2_ucs_table_size) {
135: flag = 2;
136: w = uhc2_ucs_table[w];
137: } else {
138: w = 0;
139: }
140: } else if ( c1 >= 0xc7 && c1 <= 0xfe){
141: w = (c1 - 0xc7)*94 + (c - 0xa1);
142: if (w >= 0 && w < uhc3_ucs_table_size) {
143: flag = 3;
144: w = uhc3_ucs_table[w];
145: } else {
146: w = 0;
147: }
148: }
149: if (flag > 0){
150: if (w <= 0) {
151: w = (c1 << 8) | c;
152: w &= MBFL_WCSPLANE_MASK;
153: w |= MBFL_WCSPLANE_UHC;
154: }
155: CK((*filter->output_function)(w, filter->data));
156: } else {
157: if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
158: CK((*filter->output_function)(c, filter->data));
159: } else {
160: w = (c1 << 8) | c;
161: w &= MBFL_WCSGROUP_MASK;
162: w |= MBFL_WCSGROUP_THROUGH;
163: CK((*filter->output_function)(w, filter->data));
164: }
165: }
166: break;
167:
168: default:
169: filter->status = 0;
170: break;
171: }
172:
173: return c;
174: }
175:
176: /*
177: * wchar => UHC
178: */
179: int
180: mbfl_filt_conv_wchar_uhc(int c, mbfl_convert_filter *filter)
181: {
182: int c1, s;
183:
184: s = 0;
185: if (c >= ucs_a1_uhc_table_min && c < ucs_a1_uhc_table_max) {
186: s = ucs_a1_uhc_table[c - ucs_a1_uhc_table_min];
187: } else if (c >= ucs_a2_uhc_table_min && c < ucs_a2_uhc_table_max) {
188: s = ucs_a2_uhc_table[c - ucs_a2_uhc_table_min];
189: } else if (c >= ucs_a3_uhc_table_min && c < ucs_a3_uhc_table_max) {
190: s = ucs_a3_uhc_table[c - ucs_a3_uhc_table_min];
191: } else if (c >= ucs_i_uhc_table_min && c < ucs_i_uhc_table_max) {
192: s = ucs_i_uhc_table[c - ucs_i_uhc_table_min];
193: } else if (c >= ucs_s_uhc_table_min && c < ucs_s_uhc_table_max) {
194: s = ucs_s_uhc_table[c - ucs_s_uhc_table_min];
195: } else if (c >= ucs_r1_uhc_table_min && c < ucs_r1_uhc_table_max) {
196: s = ucs_r1_uhc_table[c - ucs_r1_uhc_table_min];
197: } else if (c >= ucs_r2_uhc_table_min && c < ucs_r2_uhc_table_max) {
198: s = ucs_r2_uhc_table[c - ucs_r2_uhc_table_min];
199: }
200: if (s <= 0) {
201: c1 = c & ~MBFL_WCSPLANE_MASK;
202: if (c1 == MBFL_WCSPLANE_UHC) {
203: s = c & MBFL_WCSPLANE_MASK;
204: }
205: if (c == 0) {
206: s = 0;
207: } else if (s <= 0) {
208: s = -1;
209: }
210: }
211: if (s >= 0) {
212: if (s < 0x80) { /* latin */
213: CK((*filter->output_function)(s, filter->data));
214: } else {
215: CK((*filter->output_function)((s >> 8) & 0xff, filter->data));
216: CK((*filter->output_function)(s & 0xff, filter->data));
217: }
218: } else {
219: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
220: CK(mbfl_filt_conv_illegal_output(c, filter));
221: }
222: }
223:
224: return c;
225: }
226:
227: static int mbfl_filt_ident_uhc(int c, mbfl_identify_filter *filter)
228: {
229: switch (filter->status) {
230: case 0: /* latin */
231: if (c >= 0 && c < 0x80) { /* ok */
232: ;
233: } else if (c >= 0x81 && c <= 0xa0) { /* dbcs first char */
234: filter->status= 1;
235: } else if (c >= 0xa1 && c <= 0xc6) { /* dbcs first char */
236: filter->status= 2;
237: } else if (c >= 0xc7 && c <= 0xfe) { /* dbcs first char */
238: filter->status= 3;
239: } else { /* bad */
240: filter->flag = 1;
241: }
242:
243: case 1:
244: case 2:
245: if (c < 0x41 || (c > 0x5a && c < 0x61)
246: || (c > 0x7a && c < 0x81) || c > 0xfe) { /* bad */
247: filter->flag = 1;
248: }
249: filter->status = 0;
250: break;
251:
252: case 3:
253: if (c < 0xa1 || c > 0xfe) { /* bad */
254: filter->flag = 1;
255: }
256: filter->status = 0;
257: break;
258:
259: default:
260: filter->status = 0;
261: break;
262: }
263:
264: return c;
265: }
266:
267: