Annotation of embedaddon/php/ext/mbstring/libmbfl/filters/mbfilter_jis.c, revision 1.1
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_jis.h"
! 36:
! 37: #include "unicode_table_cp932_ext.h"
! 38: #include "unicode_table_jis.h"
! 39:
! 40: static int mbfl_filt_ident_jis(int c, mbfl_identify_filter *filter);
! 41: static int mbfl_filt_ident_2022jp(int c, mbfl_identify_filter *filter);
! 42:
! 43: const mbfl_encoding mbfl_encoding_jis = {
! 44: mbfl_no_encoding_jis,
! 45: "JIS",
! 46: "ISO-2022-JP",
! 47: NULL,
! 48: NULL,
! 49: MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE
! 50: };
! 51:
! 52: const mbfl_encoding mbfl_encoding_2022jp = {
! 53: mbfl_no_encoding_2022jp,
! 54: "ISO-2022-JP",
! 55: "ISO-2022-JP",
! 56: NULL,
! 57: NULL,
! 58: MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE
! 59: };
! 60:
! 61: const struct mbfl_identify_vtbl vtbl_identify_jis = {
! 62: mbfl_no_encoding_jis,
! 63: mbfl_filt_ident_common_ctor,
! 64: mbfl_filt_ident_common_dtor,
! 65: mbfl_filt_ident_jis
! 66: };
! 67:
! 68: const struct mbfl_identify_vtbl vtbl_identify_2022jp = {
! 69: mbfl_no_encoding_2022jp,
! 70: mbfl_filt_ident_common_ctor,
! 71: mbfl_filt_ident_common_dtor,
! 72: mbfl_filt_ident_2022jp
! 73: };
! 74:
! 75: const struct mbfl_convert_vtbl vtbl_jis_wchar = {
! 76: mbfl_no_encoding_jis,
! 77: mbfl_no_encoding_wchar,
! 78: mbfl_filt_conv_common_ctor,
! 79: mbfl_filt_conv_common_dtor,
! 80: mbfl_filt_conv_jis_wchar,
! 81: mbfl_filt_conv_common_flush
! 82: };
! 83:
! 84: const struct mbfl_convert_vtbl vtbl_wchar_jis = {
! 85: mbfl_no_encoding_wchar,
! 86: mbfl_no_encoding_jis,
! 87: mbfl_filt_conv_common_ctor,
! 88: mbfl_filt_conv_common_dtor,
! 89: mbfl_filt_conv_wchar_jis,
! 90: mbfl_filt_conv_any_jis_flush
! 91: };
! 92:
! 93: const struct mbfl_convert_vtbl vtbl_2022jp_wchar = {
! 94: mbfl_no_encoding_2022jp,
! 95: mbfl_no_encoding_wchar,
! 96: mbfl_filt_conv_common_ctor,
! 97: mbfl_filt_conv_common_dtor,
! 98: mbfl_filt_conv_jis_wchar,
! 99: mbfl_filt_conv_common_flush
! 100: };
! 101:
! 102: const struct mbfl_convert_vtbl vtbl_wchar_2022jp = {
! 103: mbfl_no_encoding_wchar,
! 104: mbfl_no_encoding_2022jp,
! 105: mbfl_filt_conv_common_ctor,
! 106: mbfl_filt_conv_common_dtor,
! 107: mbfl_filt_conv_wchar_2022jp,
! 108: mbfl_filt_conv_any_jis_flush
! 109: };
! 110:
! 111: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
! 112:
! 113: /*
! 114: * JIS => wchar
! 115: */
! 116: int
! 117: mbfl_filt_conv_jis_wchar(int c, mbfl_convert_filter *filter)
! 118: {
! 119: int c1, s, w;
! 120:
! 121: retry:
! 122: switch (filter->status & 0xf) {
! 123: /* case 0x00: ASCII */
! 124: /* case 0x10: X 0201 latin */
! 125: /* case 0x20: X 0201 kana */
! 126: /* case 0x80: X 0208 */
! 127: /* case 0x90: X 0212 */
! 128: case 0:
! 129: if (c == 0x1b) {
! 130: filter->status += 2;
! 131: } else if (c == 0x0e) { /* "kana in" */
! 132: filter->status = 0x20;
! 133: } else if (c == 0x0f) { /* "kana out" */
! 134: filter->status = 0;
! 135: } else if (filter->status == 0x10 && c == 0x5c) { /* YEN SIGN */
! 136: CK((*filter->output_function)(0xa5, filter->data));
! 137: } else if (filter->status == 0x10 && c == 0x7e) { /* OVER LINE */
! 138: CK((*filter->output_function)(0x203e, filter->data));
! 139: } else if (filter->status == 0x20 && c > 0x20 && c < 0x60) { /* kana */
! 140: CK((*filter->output_function)(0xff40 + c, filter->data));
! 141: } else if ((filter->status == 0x80 || filter->status == 0x90) && c > 0x20 && c < 0x7f) { /* kanji first char */
! 142: filter->cache = c;
! 143: filter->status += 1;
! 144: } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
! 145: CK((*filter->output_function)(c, filter->data));
! 146: } else if (c > 0xa0 && c < 0xe0) { /* GR kana */
! 147: CK((*filter->output_function)(0xfec0 + c, filter->data));
! 148: } else {
! 149: w = c & MBFL_WCSGROUP_MASK;
! 150: w |= MBFL_WCSGROUP_THROUGH;
! 151: CK((*filter->output_function)(w, filter->data));
! 152: }
! 153: break;
! 154:
! 155: /* case 0x81: X 0208 second char */
! 156: /* case 0x91: X 0212 second char */
! 157: case 1:
! 158: filter->status &= ~0xf;
! 159: c1 = filter->cache;
! 160: if (c > 0x20 && c < 0x7f) {
! 161: s = (c1 - 0x21)*94 + c - 0x21;
! 162: if (filter->status == 0x80) {
! 163: if (s >= 0 && s < jisx0208_ucs_table_size) {
! 164: w = jisx0208_ucs_table[s];
! 165: } else {
! 166: w = 0;
! 167: }
! 168: if (w <= 0) {
! 169: w = (c1 << 8) | c;
! 170: w &= MBFL_WCSPLANE_MASK;
! 171: w |= MBFL_WCSPLANE_JIS0208;
! 172: }
! 173: } else {
! 174: if (s >= 0 && s < jisx0212_ucs_table_size) {
! 175: w = jisx0212_ucs_table[s];
! 176: } else {
! 177: w = 0;
! 178: }
! 179: if (w <= 0) {
! 180: w = (c1 << 8) | c;
! 181: w &= MBFL_WCSPLANE_MASK;
! 182: w |= MBFL_WCSPLANE_JIS0212;
! 183: }
! 184: }
! 185: CK((*filter->output_function)(w, filter->data));
! 186: } else if (c == 0x1b) {
! 187: filter->status += 2;
! 188: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
! 189: CK((*filter->output_function)(c, filter->data));
! 190: } else {
! 191: w = (c1 << 8) | c;
! 192: w &= MBFL_WCSGROUP_MASK;
! 193: w |= MBFL_WCSGROUP_THROUGH;
! 194: CK((*filter->output_function)(w, filter->data));
! 195: }
! 196: break;
! 197:
! 198: /* ESC */
! 199: /* case 0x02: */
! 200: /* case 0x12: */
! 201: /* case 0x22: */
! 202: /* case 0x82: */
! 203: /* case 0x92: */
! 204: case 2:
! 205: if (c == 0x24) { /* '$' */
! 206: filter->status++;
! 207: } else if (c == 0x28) { /* '(' */
! 208: filter->status += 3;
! 209: } else {
! 210: filter->status &= ~0xf;
! 211: CK((*filter->output_function)(0x1b, filter->data));
! 212: goto retry;
! 213: }
! 214: break;
! 215:
! 216: /* ESC $ */
! 217: /* case 0x03: */
! 218: /* case 0x13: */
! 219: /* case 0x23: */
! 220: /* case 0x83: */
! 221: /* case 0x93: */
! 222: case 3:
! 223: if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
! 224: filter->status = 0x80;
! 225: } else if (c == 0x28) { /* '(' */
! 226: filter->status++;
! 227: } else {
! 228: filter->status &= ~0xf;
! 229: CK((*filter->output_function)(0x1b, filter->data));
! 230: CK((*filter->output_function)(0x24, filter->data));
! 231: goto retry;
! 232: }
! 233: break;
! 234:
! 235: /* ESC $ ( */
! 236: /* case 0x04: */
! 237: /* case 0x14: */
! 238: /* case 0x24: */
! 239: /* case 0x84: */
! 240: /* case 0x94: */
! 241: case 4:
! 242: if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
! 243: filter->status = 0x80;
! 244: } else if (c == 0x44) { /* 'D' */
! 245: filter->status = 0x90;
! 246: } else {
! 247: filter->status &= ~0xf;
! 248: CK((*filter->output_function)(0x1b, filter->data));
! 249: CK((*filter->output_function)(0x24, filter->data));
! 250: CK((*filter->output_function)(0x28, filter->data));
! 251: goto retry;
! 252: }
! 253: break;
! 254:
! 255: /* ESC ( */
! 256: /* case 0x05: */
! 257: /* case 0x15: */
! 258: /* case 0x25: */
! 259: /* case 0x85: */
! 260: /* case 0x95: */
! 261: case 5:
! 262: if (c == 0x42 || c == 0x48) { /* 'B' or 'H' */
! 263: filter->status = 0;
! 264: } else if (c == 0x4a) { /* 'J' */
! 265: filter->status = 0x10;
! 266: } else if (c == 0x49) { /* 'I' */
! 267: filter->status = 0x20;
! 268: } else {
! 269: filter->status &= ~0xf;
! 270: CK((*filter->output_function)(0x1b, filter->data));
! 271: CK((*filter->output_function)(0x28, filter->data));
! 272: goto retry;
! 273: }
! 274: break;
! 275:
! 276: default:
! 277: filter->status = 0;
! 278: break;
! 279: }
! 280:
! 281: return c;
! 282: }
! 283:
! 284: /*
! 285: * wchar => JIS
! 286: */
! 287: int
! 288: mbfl_filt_conv_wchar_jis(int c, mbfl_convert_filter *filter)
! 289: {
! 290: int c1, s;
! 291:
! 292: s = 0;
! 293: if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
! 294: s = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
! 295: } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
! 296: s = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
! 297: } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
! 298: s = ucs_i_jis_table[c - ucs_i_jis_table_min];
! 299: } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
! 300: s = ucs_r_jis_table[c - ucs_r_jis_table_min];
! 301: }
! 302: if (s <= 0) {
! 303: c1 = c & ~MBFL_WCSPLANE_MASK;
! 304: if (c1 == MBFL_WCSPLANE_JIS0208) {
! 305: s = c & MBFL_WCSPLANE_MASK;
! 306: } else if (c1 == MBFL_WCSPLANE_JIS0212) {
! 307: s = c & MBFL_WCSPLANE_MASK;
! 308: s |= 0x8080;
! 309: } else if (c == 0xa5) { /* YEN SIGN */
! 310: s = 0x1005c;
! 311: } else if (c == 0x203e) { /* OVER LINE */
! 312: s = 0x1007e;
! 313: } else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
! 314: s = 0x2140;
! 315: } else if (c == 0xff5e) { /* FULLWIDTH TILDE */
! 316: s = 0x2141;
! 317: } else if (c == 0x2225) { /* PARALLEL TO */
! 318: s = 0x2142;
! 319: } else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
! 320: s = 0x215d;
! 321: } else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
! 322: s = 0x2171;
! 323: } else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
! 324: s = 0x2172;
! 325: } else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
! 326: s = 0x224c;
! 327: }
! 328: if (c == 0) {
! 329: s = 0;
! 330: } else if (s <= 0) {
! 331: s = -1;
! 332: }
! 333: }
! 334: if (s >= 0) {
! 335: if (s < 0x80) { /* ASCII */
! 336: if ((filter->status & 0xff00) != 0) {
! 337: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 338: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 339: CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
! 340: }
! 341: filter->status = 0;
! 342: CK((*filter->output_function)(s, filter->data));
! 343: } else if (s < 0x100) { /* kana */
! 344: if ((filter->status & 0xff00) != 0x100) {
! 345: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 346: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 347: CK((*filter->output_function)(0x49, filter->data)); /* 'I' */
! 348: }
! 349: filter->status = 0x100;
! 350: CK((*filter->output_function)(s & 0x7f, filter->data));
! 351: } else if (s < 0x8080) { /* X 0208 */
! 352: if ((filter->status & 0xff00) != 0x200) {
! 353: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 354: CK((*filter->output_function)(0x24, filter->data)); /* '$' */
! 355: CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
! 356: }
! 357: filter->status = 0x200;
! 358: CK((*filter->output_function)((s >> 8) & 0x7f, filter->data));
! 359: CK((*filter->output_function)(s & 0x7f, filter->data));
! 360: } else if (s < 0x10000) { /* X 0212 */
! 361: if ((filter->status & 0xff00) != 0x300) {
! 362: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 363: CK((*filter->output_function)(0x24, filter->data)); /* '$' */
! 364: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 365: CK((*filter->output_function)(0x44, filter->data)); /* 'D' */
! 366: }
! 367: filter->status = 0x300;
! 368: CK((*filter->output_function)((s >> 8) & 0x7f, filter->data));
! 369: CK((*filter->output_function)(s & 0x7f, filter->data));
! 370: } else { /* X 0201 latin */
! 371: if ((filter->status & 0xff00) != 0x400) {
! 372: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 373: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 374: CK((*filter->output_function)(0x4a, filter->data)); /* 'J' */
! 375: }
! 376: filter->status = 0x400;
! 377: CK((*filter->output_function)(s & 0x7f, filter->data));
! 378: }
! 379: } else {
! 380: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
! 381: CK(mbfl_filt_conv_illegal_output(c, filter));
! 382: }
! 383: }
! 384:
! 385: return c;
! 386: }
! 387:
! 388:
! 389: /*
! 390: * wchar => ISO-2022-JP
! 391: */
! 392: int
! 393: mbfl_filt_conv_wchar_2022jp(int c, mbfl_convert_filter *filter)
! 394: {
! 395: int s;
! 396:
! 397: s = 0;
! 398: if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
! 399: s = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
! 400: } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
! 401: s = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
! 402: } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
! 403: s = ucs_i_jis_table[c - ucs_i_jis_table_min];
! 404: } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
! 405: s = ucs_r_jis_table[c - ucs_r_jis_table_min];
! 406: }
! 407: if (s <= 0) {
! 408: if (c == 0xa5) { /* YEN SIGN */
! 409: s = 0x1005c;
! 410: } else if (c == 0x203e) { /* OVER LINE */
! 411: s = 0x1007e;
! 412: } else if (c == 0xff3c) { /* FULLWIDTH REVERSE SOLIDUS */
! 413: s = 0x2140;
! 414: } else if (c == 0xff5e) { /* FULLWIDTH TILDE */
! 415: s = 0x2141;
! 416: } else if (c == 0x2225) { /* PARALLEL TO */
! 417: s = 0x2142;
! 418: } else if (c == 0xff0d) { /* FULLWIDTH HYPHEN-MINUS */
! 419: s = 0x215d;
! 420: } else if (c == 0xffe0) { /* FULLWIDTH CENT SIGN */
! 421: s = 0x2171;
! 422: } else if (c == 0xffe1) { /* FULLWIDTH POUND SIGN */
! 423: s = 0x2172;
! 424: } else if (c == 0xffe2) { /* FULLWIDTH NOT SIGN */
! 425: s = 0x224c;
! 426: }
! 427: if (c == 0) {
! 428: s = 0;
! 429: } else if (s <= 0) {
! 430: s = -1;
! 431: }
! 432: } else if ((s >= 0x80 && s < 0x2121) || (s > 0x8080)) {
! 433: s = -1;
! 434: }
! 435: if (s >= 0) {
! 436: if (s < 0x80) { /* ASCII */
! 437: if ((filter->status & 0xff00) != 0) {
! 438: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 439: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 440: CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
! 441: }
! 442: filter->status = 0;
! 443: CK((*filter->output_function)(s, filter->data));
! 444: } else if (s < 0x10000) { /* X 0208 */
! 445: if ((filter->status & 0xff00) != 0x200) {
! 446: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 447: CK((*filter->output_function)(0x24, filter->data)); /* '$' */
! 448: CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
! 449: }
! 450: filter->status = 0x200;
! 451: CK((*filter->output_function)((s >> 8) & 0x7f, filter->data));
! 452: CK((*filter->output_function)(s & 0x7f, filter->data));
! 453: } else { /* X 0201 latin */
! 454: if ((filter->status & 0xff00) != 0x400) {
! 455: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 456: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 457: CK((*filter->output_function)(0x4a, filter->data)); /* 'J' */
! 458: }
! 459: filter->status = 0x400;
! 460: CK((*filter->output_function)(s & 0x7f, filter->data));
! 461: }
! 462: } else {
! 463: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
! 464: CK(mbfl_filt_conv_illegal_output(c, filter));
! 465: }
! 466: }
! 467:
! 468: return c;
! 469: }
! 470:
! 471: int
! 472: mbfl_filt_conv_any_jis_flush(mbfl_convert_filter *filter)
! 473: {
! 474: /* back to latin */
! 475: if ((filter->status & 0xff00) != 0) {
! 476: CK((*filter->output_function)(0x1b, filter->data)); /* ESC */
! 477: CK((*filter->output_function)(0x28, filter->data)); /* '(' */
! 478: CK((*filter->output_function)(0x42, filter->data)); /* 'B' */
! 479: }
! 480: filter->status &= 0xff;
! 481:
! 482: if (filter->flush_function != NULL) {
! 483: return (*filter->flush_function)(filter->data);
! 484: }
! 485:
! 486: return 0;
! 487: }
! 488:
! 489: static int mbfl_filt_ident_jis(int c, mbfl_identify_filter *filter)
! 490: {
! 491: retry:
! 492: switch (filter->status & 0xf) {
! 493: /* case 0x00: ASCII */
! 494: /* case 0x10: X 0201 latin */
! 495: /* case 0x20: X 0201 kana */
! 496: /* case 0x80: X 0208 */
! 497: /* case 0x90: X 0212 */
! 498: case 0:
! 499: if (c == 0x1b) {
! 500: filter->status += 2;
! 501: } else if (c == 0x0e) { /* "kana in" */
! 502: filter->status = 0x20;
! 503: } else if (c == 0x0f) { /* "kana out" */
! 504: filter->status = 0;
! 505: } else if ((filter->status == 0x80 || filter->status == 0x90) && c > 0x20 && c < 0x7f) { /* kanji first char */
! 506: filter->status += 1;
! 507: } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
! 508: ;
! 509: } else {
! 510: filter->flag = 1; /* bad */
! 511: }
! 512: break;
! 513:
! 514: /* case 0x81: X 0208 second char */
! 515: /* case 0x91: X 0212 second char */
! 516: case 1:
! 517: filter->status &= ~0xf;
! 518: if (c == 0x1b) {
! 519: goto retry;
! 520: } else if (c < 0x21 || c > 0x7e) { /* bad */
! 521: filter->flag = 1;
! 522: }
! 523: break;
! 524:
! 525: /* ESC */
! 526: case 2:
! 527: if (c == 0x24) { /* '$' */
! 528: filter->status++;
! 529: } else if (c == 0x28) { /* '(' */
! 530: filter->status += 3;
! 531: } else {
! 532: filter->flag = 1; /* bad */
! 533: filter->status &= ~0xf;
! 534: goto retry;
! 535: }
! 536: break;
! 537:
! 538: /* ESC $ */
! 539: case 3:
! 540: if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
! 541: filter->status = 0x80;
! 542: } else if (c == 0x28) { /* '(' */
! 543: filter->status++;
! 544: } else {
! 545: filter->flag = 1; /* bad */
! 546: filter->status &= ~0xf;
! 547: goto retry;
! 548: }
! 549: break;
! 550:
! 551: /* ESC $ ( */
! 552: case 4:
! 553: if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
! 554: filter->status = 0x80;
! 555: } else if (c == 0x44) { /* 'D' */
! 556: filter->status = 0x90;
! 557: } else {
! 558: filter->flag = 1; /* bad */
! 559: filter->status &= ~0xf;
! 560: goto retry;
! 561: }
! 562: break;
! 563:
! 564: /* ESC ( */
! 565: case 5:
! 566: if (c == 0x42 || c == 0x48) { /* 'B' or 'H' */
! 567: filter->status = 0;
! 568: } else if (c == 0x4a) { /* 'J' */
! 569: filter->status = 0x10;
! 570: } else if (c == 0x49) { /* 'I' */
! 571: filter->status = 0x20;
! 572: } else {
! 573: filter->flag = 1; /* bad */
! 574: filter->status &= ~0xf;
! 575: goto retry;
! 576: }
! 577: break;
! 578:
! 579: default:
! 580: filter->status = 0;
! 581: break;
! 582: }
! 583:
! 584: return c;
! 585: }
! 586:
! 587: static int mbfl_filt_ident_2022jp(int c, mbfl_identify_filter *filter)
! 588: {
! 589: retry:
! 590: switch (filter->status & 0xf) {
! 591: /* case 0x00: ASCII */
! 592: /* case 0x10: X 0201 latin */
! 593: /* case 0x80: X 0208 */
! 594: case 0:
! 595: if (c == 0x1b) {
! 596: filter->status += 2;
! 597: } else if (filter->status == 0x80 && c > 0x20 && c < 0x7f) { /* kanji first char */
! 598: filter->status += 1;
! 599: } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
! 600: ;
! 601: } else {
! 602: filter->flag = 1; /* bad */
! 603: }
! 604: break;
! 605:
! 606: /* case 0x81: X 0208 second char */
! 607: case 1:
! 608: if (c == 0x1b) {
! 609: filter->status++;
! 610: } else {
! 611: filter->status &= ~0xf;
! 612: if (c < 0x21 || c > 0x7e) { /* bad */
! 613: filter->flag = 1;
! 614: }
! 615: }
! 616: break;
! 617:
! 618: /* ESC */
! 619: case 2:
! 620: if (c == 0x24) { /* '$' */
! 621: filter->status++;
! 622: } else if (c == 0x28) { /* '(' */
! 623: filter->status += 3;
! 624: } else {
! 625: filter->flag = 1; /* bad */
! 626: filter->status &= ~0xf;
! 627: goto retry;
! 628: }
! 629: break;
! 630:
! 631: /* ESC $ */
! 632: case 3:
! 633: if (c == 0x40 || c == 0x42) { /* '@' or 'B' */
! 634: filter->status = 0x80;
! 635: } else {
! 636: filter->flag = 1; /* bad */
! 637: filter->status &= ~0xf;
! 638: goto retry;
! 639: }
! 640: break;
! 641:
! 642: /* ESC ( */
! 643: case 5:
! 644: if (c == 0x42) { /* 'B' */
! 645: filter->status = 0;
! 646: } else if (c == 0x4a) { /* 'J' */
! 647: filter->status = 0x10;
! 648: } else {
! 649: filter->flag = 1; /* bad */
! 650: filter->status &= ~0xf;
! 651: goto retry;
! 652: }
! 653: break;
! 654:
! 655: default:
! 656: filter->status = 0;
! 657: break;
! 658: }
! 659:
! 660: return c;
! 661: }
! 662:
! 663:
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