ext/mbstring/libmbfl/filters/mbfilter_euc

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This source file includes following definitions.
mbfl_filt_conv_eucjp_wchar
mbfl_filt_conv_wchar_eucjp
mbfl_filt_ident_eucjp
   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 
  40 int mbfl_filt_ident_eucjp(int c, mbfl_identify_filter *filter);
  41 
  42 const unsigned char mblen_table_eucjp[] = { /* 0xA1-0xFE */
  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 
 278 int mbfl_filt_ident_eucjp(int c, mbfl_identify_filter *filter)
 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
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root/ext/mbstring/libmbfl/filters/mbfilter_euc_jp.c

DEFINITIONS
