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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_cn.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_cp936.h" 1.1.1.2 ! misho 36: #define UNICODE_TABLE_CP936_DEF 1.1 misho 37: #include "unicode_table_cp936.h" 38: 39: static int mbfl_filt_ident_cp936(int c, mbfl_identify_filter *filter); 40: 41: static const unsigned char mblen_table_cp936[] = { /* 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_cp936_aliases[] = {"CP-936", "GBK", NULL}; 61: 62: const mbfl_encoding mbfl_encoding_cp936 = { 63: mbfl_no_encoding_cp936, 64: "CP936", 65: "CP936", 66: (const char *(*)[])&mbfl_encoding_cp936_aliases, 67: mblen_table_cp936, 1.1.1.2 ! misho 68: MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_GL_UNSAFE 1.1 misho 69: }; 70: 71: const struct mbfl_identify_vtbl vtbl_identify_cp936 = { 72: mbfl_no_encoding_cp936, 73: mbfl_filt_ident_common_ctor, 74: mbfl_filt_ident_common_dtor, 75: mbfl_filt_ident_cp936 76: }; 77: 78: const struct mbfl_convert_vtbl vtbl_cp936_wchar = { 79: mbfl_no_encoding_cp936, 80: mbfl_no_encoding_wchar, 81: mbfl_filt_conv_common_ctor, 82: mbfl_filt_conv_common_dtor, 83: mbfl_filt_conv_cp936_wchar, 84: mbfl_filt_conv_common_flush 85: }; 86: 87: const struct mbfl_convert_vtbl vtbl_wchar_cp936 = { 88: mbfl_no_encoding_wchar, 89: mbfl_no_encoding_cp936, 90: mbfl_filt_conv_common_ctor, 91: mbfl_filt_conv_common_dtor, 92: mbfl_filt_conv_wchar_cp936, 93: mbfl_filt_conv_common_flush 94: }; 95: 96: 97: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0) 98: 99: /* 100: * CP936 => wchar 101: */ 102: int 103: mbfl_filt_conv_cp936_wchar(int c, mbfl_convert_filter *filter) 104: { 1.1.1.2 ! misho 105: int k; ! 106: int c1, c2, w = -1; 1.1 misho 107: 108: switch (filter->status) { 109: case 0: 110: if (c >= 0 && c < 0x80) { /* latin */ 111: CK((*filter->output_function)(c, filter->data)); 112: } else if (c == 0x80) { /* euro sign */ 113: CK((*filter->output_function)(0x20ac, filter->data)); 1.1.1.2 ! misho 114: } else if (c < 0xff) { /* dbcs lead byte */ 1.1 misho 115: filter->status = 1; 116: filter->cache = c; 1.1.1.2 ! misho 117: } else { /* 0xff */ ! 118: CK((*filter->output_function)(0xf8f5, filter->data)); 1.1 misho 119: } 120: break; 121: 122: case 1: /* dbcs second byte */ 123: filter->status = 0; 124: c1 = filter->cache; 1.1.1.2 ! misho 125: ! 126: if (((c1 >= 0xaa && c1 <= 0xaf) || (c1 >= 0xf8 && c1 <= 0xfe)) && ! 127: (c >= 0xa1 && c <= 0xfe)) { ! 128: /* UDA part1,2: U+E000-U+E4C5 */ ! 129: w = 94*(c1 >= 0xf8 ? c1 - 0xf2 : c1 - 0xaa) + (c - 0xa1) + 0xe000; ! 130: CK((*filter->output_function)(w, filter->data)); ! 131: } else if (c1 >= 0xa1 && c1 <= 0xa7 && c >= 0x40 && c < 0xa1 && c != 0x7f) { ! 132: /* UDA part3 : U+E4C6-U+E765*/ ! 133: w = 96*(c1 - 0xa1) + c - (c >= 0x80 ? 0x41 : 0x40) + 0xe4c6; ! 134: CK((*filter->output_function)(w, filter->data)); ! 135: } ! 136: ! 137: c2 = (c1 << 8) | c; ! 138: ! 139: if (w <= 0 && ! 140: ((c2 >= 0xa2ab && c2 <= 0xa9f0 + (0xe80f-0xe801)) || ! 141: (c2 >= 0xd7fa && c2 <= 0xd7fa + (0xe814-0xe810)) || ! 142: (c2 >= 0xfe50 && c2 <= 0xfe80 + (0xe864-0xe844)))) { ! 143: for (k = 0; k < mbfl_cp936_pua_tbl_max; k++) { ! 144: if (c2 >= mbfl_cp936_pua_tbl[k][2] && ! 145: c2 <= mbfl_cp936_pua_tbl[k][2] + ! 146: mbfl_cp936_pua_tbl[k][1] - mbfl_cp936_pua_tbl[k][0]) { ! 147: w = c2 - mbfl_cp936_pua_tbl[k][2] + mbfl_cp936_pua_tbl[k][0]; ! 148: CK((*filter->output_function)(w, filter->data)); ! 149: break; ! 150: } 1.1 misho 151: } 1.1.1.2 ! misho 152: } ! 153: ! 154: if (w <= 0) { ! 155: if (c1 < 0xff && c1 > 0x80 && c > 0x39 && c < 0xff && c != 0x7f) { ! 156: w = (c1 - 0x81)*192 + (c - 0x40); ! 157: if (w >= 0 && w < cp936_ucs_table_size) { ! 158: w = cp936_ucs_table[w]; ! 159: } else { ! 160: w = 0; ! 161: } ! 162: if (w <= 0) { ! 163: w = (c1 << 8) | c; ! 164: w &= MBFL_WCSPLANE_MASK; ! 165: w |= MBFL_WCSPLANE_WINCP936; ! 166: } ! 167: CK((*filter->output_function)(w, filter->data)); ! 168: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */ ! 169: CK((*filter->output_function)(c, filter->data)); ! 170: } else { 1.1 misho 171: w = (c1 << 8) | c; 1.1.1.2 ! misho 172: w &= MBFL_WCSGROUP_MASK; ! 173: w |= MBFL_WCSGROUP_THROUGH; ! 174: CK((*filter->output_function)(w, filter->data)); 1.1 misho 175: } 176: } 177: break; 178: 179: default: 180: filter->status = 0; 181: break; 182: } 183: 184: return c; 185: } 186: 187: /* 188: * wchar => CP936 189: */ 190: int 191: mbfl_filt_conv_wchar_cp936(int c, mbfl_convert_filter *filter) 192: { 1.1.1.2 ! misho 193: int k, k1, k2; ! 194: int c1, s = 0; 1.1 misho 195: 196: if (c >= ucs_a1_cp936_table_min && c < ucs_a1_cp936_table_max) { 1.1.1.2 ! misho 197: /* U+0000 - U+0451 */ 1.1 misho 198: s = ucs_a1_cp936_table[c - ucs_a1_cp936_table_min]; 199: } else if (c >= ucs_a2_cp936_table_min && c < ucs_a2_cp936_table_max) { 1.1.1.2 ! misho 200: /* U+2000 - U+26FF */ ! 201: if (c == 0x203e) { ! 202: s = 0xa3fe; ! 203: } else if (c == 0x2218) { ! 204: s = 0xa1e3; ! 205: } else if (c == 0x223c) { ! 206: s = 0xa1ab; ! 207: } else { ! 208: s = ucs_a2_cp936_table[c - ucs_a2_cp936_table_min]; ! 209: } 1.1 misho 210: } else if (c >= ucs_a3_cp936_table_min && c < ucs_a3_cp936_table_max) { 1.1.1.2 ! misho 211: /* U+2F00 - U+33FF */ 1.1 misho 212: s = ucs_a3_cp936_table[c - ucs_a3_cp936_table_min]; 213: } else if (c >= ucs_i_cp936_table_min && c < ucs_i_cp936_table_max) { 1.1.1.2 ! misho 214: /* U+4D00-9FFF CJK Unified Ideographs (+ Extension A) */ 1.1 misho 215: s = ucs_i_cp936_table[c - ucs_i_cp936_table_min]; 1.1.1.2 ! misho 216: } else if (c >= 0xe000 && c <= 0xe864) { /* PUA */ ! 217: if (c < 0xe766) { ! 218: if (c < 0xe4c6) { ! 219: c1 = c - 0xe000; ! 220: s = (c1 % 94) + 0xa1; c1 /= 94; ! 221: s |= (c1 < 0x06 ? c1 + 0xaa : c1 + 0xf2) << 8; ! 222: } else { ! 223: c1 = c - 0xe4c6; ! 224: s = ((c1 / 96) + 0xa1) << 8; c1 %= 96; ! 225: s |= c1 + (c1 >= 0x3f ? 0x41 : 0x40); ! 226: } ! 227: } else { ! 228: /* U+E766..U+E864 */ ! 229: k1 = 0; k2 = mbfl_cp936_pua_tbl_max; ! 230: while (k1 < k2) { ! 231: k = (k1 + k2) >> 1; ! 232: if (c < mbfl_cp936_pua_tbl[k][0]) { ! 233: k2 = k; ! 234: } else if (c > mbfl_cp936_pua_tbl[k][1]) { ! 235: k1 = k + 1; ! 236: } else { ! 237: s = c - mbfl_cp936_pua_tbl[k][0] + mbfl_cp936_pua_tbl[k][2]; ! 238: break; ! 239: } ! 240: } ! 241: } ! 242: } else if (c == 0xf8f5) { ! 243: s = 0xff; 1.1 misho 244: } else if (c >= ucs_ci_cp936_table_min && c < ucs_ci_cp936_table_max) { 1.1.1.2 ! misho 245: /* U+F900-FA2F CJK Compatibility Ideographs */ 1.1 misho 246: s = ucs_ci_cp936_table[c - ucs_ci_cp936_table_min]; 247: } else if (c >= ucs_cf_cp936_table_min && c < ucs_cf_cp936_table_max) { 248: s = ucs_cf_cp936_table[c - ucs_cf_cp936_table_min]; 249: } else if (c >= ucs_sfv_cp936_table_min && c < ucs_sfv_cp936_table_max) { 1.1.1.2 ! misho 250: s = ucs_sfv_cp936_table[c - ucs_sfv_cp936_table_min]; /* U+FE50-FE6F Small Form Variants */ ! 251: } else if (c >= ucs_hff_cp936_table_min && c < ucs_hff_cp936_table_max) { ! 252: /* U+FF00-FFFF HW/FW Forms */ ! 253: if (c == 0xff04) { ! 254: s = 0xa1e7; ! 255: } else if (c == 0xff5e) { ! 256: s = 0xa1ab; ! 257: } else if (c >= 0xff01 && c <= 0xff5d) { ! 258: s = c - 0xff01 + 0xa3a1; ! 259: } else if (c >= 0xffe0 && c <= 0xffe5) { ! 260: s = ucs_hff_s_cp936_table[c-0xffe0]; ! 261: } 1.1 misho 262: } 263: if (s <= 0) { 264: c1 = c & ~MBFL_WCSPLANE_MASK; 265: if (c1 == MBFL_WCSPLANE_WINCP936) { 266: s = c & MBFL_WCSPLANE_MASK; 267: } 268: if (c == 0) { 269: s = 0; 270: } else if (s <= 0) { 271: s = -1; 272: } 273: } 274: if (s >= 0) { 1.1.1.2 ! misho 275: if (s <= 0x80 || s == 0xff) { /* latin */ 1.1 misho 276: CK((*filter->output_function)(s, filter->data)); 277: } else { 278: CK((*filter->output_function)((s >> 8) & 0xff, filter->data)); 279: CK((*filter->output_function)(s & 0xff, filter->data)); 280: } 281: } else { 282: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) { 283: CK(mbfl_filt_conv_illegal_output(c, filter)); 284: } 285: } 286: 287: return c; 288: } 289: 290: static int mbfl_filt_ident_cp936(int c, mbfl_identify_filter *filter) 291: { 292: if (filter->status) { /* kanji second char */ 293: if (c < 0x40 || c > 0xfe || c == 0x7f) { /* bad */ 294: filter->flag = 1; 295: } 296: filter->status = 0; 297: } else if (c >= 0 && c < 0x80) { /* latin ok */ 298: ; 299: } else if (c > 0x80 && c < 0xff) { /* DBCS lead byte */ 300: filter->status = 1; 301: } else { /* bad */ 302: filter->flag = 1; 303: } 304: 305: return c; 306: }