ext/mbstring/libmbfl/filters/mbfilter

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This source file includes following definitions.
mbfl_filt_conv_cp51932_wchar
mbfl_filt_conv_wchar_cp51932
mbfl_filt_ident_cp51932
   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_cp51932.h"
  36 
  37 #include "unicode_table_cp932_ext.h"
  38 #include "unicode_table_jis.h"
  39 #include "cp932_table.h"
  40 
  41 static int mbfl_filt_ident_cp51932(int c, mbfl_identify_filter *filter);
  42 
  43 static const unsigned char mblen_table_eucjp[] = { /* 0xA1-0xFE */
  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, 1, 1,
  52   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1,
  53   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  54   1, 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, 2,
  59   2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
  60 };
  61 
  62 
  63 static const char *mbfl_encoding_cp51932_aliases[] = {"cp51932", NULL};
  64 
  65 const struct mbfl_identify_vtbl vtbl_identify_cp51932 = {
  66         mbfl_no_encoding_cp51932,
  67         mbfl_filt_ident_common_ctor,
  68         mbfl_filt_ident_common_dtor,
  69         mbfl_filt_ident_cp51932
  70 };
  71 
  72 const mbfl_encoding mbfl_encoding_cp51932 = {
  73         mbfl_no_encoding_cp51932,
  74         "CP51932",
  75         "CP51932",
  76         (const char *(*)[])&mbfl_encoding_cp51932_aliases,
  77         mblen_table_eucjp,
  78         MBFL_ENCTYPE_MBCS
  79 };
  80 
  81 const struct mbfl_convert_vtbl vtbl_cp51932_wchar = {
  82         mbfl_no_encoding_cp51932,
  83         mbfl_no_encoding_wchar,
  84         mbfl_filt_conv_common_ctor,
  85         mbfl_filt_conv_common_dtor,
  86         mbfl_filt_conv_cp51932_wchar,
  87         mbfl_filt_conv_common_flush
  88 };
  89 
  90 const struct mbfl_convert_vtbl vtbl_wchar_cp51932 = {
  91         mbfl_no_encoding_wchar,
  92         mbfl_no_encoding_cp51932,
  93         mbfl_filt_conv_common_ctor,
  94         mbfl_filt_conv_common_dtor,
  95         mbfl_filt_conv_wchar_cp51932,
  96         mbfl_filt_conv_common_flush
  97 };
  98 
  99 #define CK(statement)   do { if ((statement) < 0) return (-1); } while (0)
 100 
 101 #define sjistoidx(c1, c2) \
 102         (((c1) > 0x9f) \
 103         ? (((c1) - 0xc1) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)) \
 104         : (((c1) - 0x81) * 188 + (c2) - (((c2) > 0x7e) ? 0x41 : 0x40)))
 105 #define idxtoeuc1(c) (((c) / 94) + 0xa1)
 106 #define idxtoeuc2(c) (((c) % 94) + 0xa1)
 107 
 108 /*
 109  * cp51932 => wchar
 110  */
 111 int
 112 mbfl_filt_conv_cp51932_wchar(int c, mbfl_convert_filter *filter)
 113 {
 114         int c1, s, w;
 115 
 116         switch (filter->status) {
 117         case 0:
 118                 if (c >= 0 && c < 0x80) {       /* latin */
 119                         CK((*filter->output_function)(c, filter->data));
 120                 } else if (c > 0xa0 && c < 0xff) {      /* CP932 first char */
 121                         filter->status = 1;
 122                         filter->cache = c;
 123                 } else if (c == 0x8e) { /* kana first char */
 124                         filter->status = 2;
 125                 } else {
 126                         w = c & MBFL_WCSGROUP_MASK;
 127                         w |= MBFL_WCSGROUP_THROUGH;
 128                         CK((*filter->output_function)(w, filter->data));
 129                 }
 130                 break;
 131 
 132         case 1: /* got first half */
 133                 filter->status = 0;
 134                 c1 = filter->cache;
 135                 if (c > 0xa0 && c < 0xff) {
 136                         w = 0;
 137                         s = (c1 - 0xa1)*94 + c - 0xa1;
 138                         if (s <= 137) {
 139                                 if (s == 31) {
 140                                         w = 0xff3c;                     /* FULLWIDTH REVERSE SOLIDUS */
 141                                 } else if (s == 32) {
 142                                         w = 0xff5e;                     /* FULLWIDTH TILDE */
 143                                 } else if (s == 33) {
 144                                         w = 0x2225;                     /* PARALLEL TO */
 145                                 } else if (s == 60) {
 146                                         w = 0xff0d;                     /* FULLWIDTH HYPHEN-MINUS */
 147                                 } else if (s == 80) {
 148                                         w = 0xffe0;                     /* FULLWIDTH CENT SIGN */
 149                                 } else if (s == 81) {
 150                                         w = 0xffe1;                     /* FULLWIDTH POUND SIGN */
 151                                 } else if (s == 137) {
 152                                         w = 0xffe2;                     /* FULLWIDTH NOT SIGN */
 153                                 }
 154                         }
 155                         if (w == 0) {
 156                                 if (s >= cp932ext1_ucs_table_min && s < cp932ext1_ucs_table_max) {              /* vendor ext1 (13ku) */
 157                                         w = cp932ext1_ucs_table[s - cp932ext1_ucs_table_min];
 158                                 } else if (s >= 0 && s < jisx0208_ucs_table_size) {             /* X 0208 */
 159                                         w = jisx0208_ucs_table[s];
 160                                 } else if (s >= cp932ext2_ucs_table_min && s < cp932ext2_ucs_table_max) {               /* vendor ext2 (89ku - 92ku) */
 161                                         w = cp932ext2_ucs_table[s - cp932ext2_ucs_table_min];
 162                                 }
 163                         }
 164                         if (w <= 0) {
 165                                 w = ((c1 & 0x7f) << 8) | (c & 0x7f);
 166                                 w &= MBFL_WCSPLANE_MASK;
 167                                 w |= MBFL_WCSPLANE_WINCP932;
 168                         }
 169                         CK((*filter->output_function)(w, filter->data));
 170                 } else if ((c >= 0 && c < 0x21) || c == 0x7f) {         /* CTLs */
 171                         CK((*filter->output_function)(c, filter->data));
 172                 } else {
 173                         w = (c1 << 8) | c;
 174                         w &= MBFL_WCSGROUP_MASK;
 175                         w |= MBFL_WCSGROUP_THROUGH;
 176                         CK((*filter->output_function)(w, filter->data));
 177                 }
 178                 break;
 179 
 180         case 2: /* got 0x8e, X0201 kana */
 181                 filter->status = 0;
 182                 if (c > 0xa0 && c < 0xe0) {
 183                         w = 0xfec0 + c;
 184                         CK((*filter->output_function)(w, filter->data));
 185                 } else if ((c >= 0 && c < 0x21) || c == 0x7f) {         /* CTLs */
 186                         CK((*filter->output_function)(c, filter->data));
 187                 } else {
 188                         w = 0x8e00 | c;
 189                         w &= MBFL_WCSGROUP_MASK;
 190                         w |= MBFL_WCSGROUP_THROUGH;
 191                         CK((*filter->output_function)(w, filter->data));
 192                 }
 193                 break;
 194 
 195         default:
 196                 filter->status = 0;
 197                 break;
 198         }
 199 
 200         return c;
 201 }
 202 
 203 /*
 204  * wchar => cp51932
 205  */
 206 int
 207 mbfl_filt_conv_wchar_cp51932(int c, mbfl_convert_filter *filter)
 208 {
 209         int c1, c2, s1;
 210 
 211         s1 = 0;
 212         if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
 213                 s1 = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
 214         } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
 215                 s1 = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
 216         } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
 217                 s1 = ucs_i_jis_table[c - ucs_i_jis_table_min];
 218         } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
 219                 s1 = ucs_r_jis_table[c - ucs_r_jis_table_min];
 220         }
 221         if (s1 >= 0x8080) s1 = -1; /* we don't support JIS X0213 */
 222         if (s1 <= 0) {
 223                 c1 = c & ~MBFL_WCSPLANE_MASK;
 224                 if (c1 == MBFL_WCSPLANE_WINCP932) {
 225                         s1 = c & MBFL_WCSPLANE_MASK;
 226                         if (s1 >= ((85 + 0x20) << 8)) { /* 85ku - 120ku */
 227                                 s1 = -1;
 228                         }
 229                 } else if (c1 == MBFL_WCSPLANE_JIS0208) {
 230                         s1 = c & MBFL_WCSPLANE_MASK;
 231                         if ((s1 >= ((85 + 0x20) << 8) &&  /* 85ku - 94ku */
 232                              s1 <= ((88 + 0x20) << 8)) ||/* IBM extension */
 233                             (s1 >= ((93 + 0x20) << 8) && /* 89ku - 92ku */
 234                              s1 <= ((94 + 0x20) << 8))) {
 235                                 s1 = -1;
 236                         }
 237                 } else if (c == 0xa5) {         /* YEN SIGN */
 238                         s1 = 0x005c;                    /* YEN SIGN */
 239                 } else if (c == 0x203e) {       /* OVER LINE */
 240                         s1 = 0x007e;                    /* FULLWIDTH MACRON */
 241                 } else if (c == 0xff3c) {       /* FULLWIDTH REVERSE SOLIDUS */
 242                         s1 = 0x2140;
 243                 } else if (c == 0xff5e) {       /* FULLWIDTH TILDE */
 244                         s1 = 0x2141;
 245                 } else if (c == 0x2225) {       /* PARALLEL TO */
 246                         s1 = 0x2142;
 247                 } else if (c == 0xff0d) {       /* FULLWIDTH HYPHEN-MINUS */
 248                         s1 = 0x215d;
 249                 } else if (c == 0xffe0) {       /* FULLWIDTH CENT SIGN */
 250                         s1 = 0x2171;
 251                 } else if (c == 0xffe1) {       /* FULLWIDTH POUND SIGN */
 252                         s1 = 0x2172;
 253                 } else if (c == 0xffe2) {       /* FULLWIDTH NOT SIGN */
 254                         s1 = 0x224c;
 255                 } else {
 256                         s1 = -1;
 257                         c1 = 0;
 258                         c2 = cp932ext1_ucs_table_max - cp932ext1_ucs_table_min;
 259                         while (c1 < c2) {               /* CP932 vendor ext1 (13ku) */
 260                                 if (c == cp932ext1_ucs_table[c1]) {
 261                                         s1 = ((c1/94 + 0x2d) << 8) + (c1%94 + 0x21);
 262                                         break;
 263                                 }
 264                                 c1++;
 265                         }
 266                         if (s1 < 0) {
 267                                 c1 = 0;
 268                                 c2 = cp932ext2_ucs_table_max - cp932ext2_ucs_table_min;
 269                                 while (c1 < c2) {               /* CP932 vendor ext3 (115ku - 119ku) */
 270                                         if (c == cp932ext2_ucs_table[c1]) {
 271                                           s1 = ((c1/94 + 0x79) << 8) +(c1%94 + 0x21);
 272                                           break;
 273                                         }
 274                                         c1++;
 275                                 }
 276                         }
 277                 }
 278                 if (c == 0) {
 279                         s1 = 0;
 280                 } else if (s1 <= 0) {
 281                         s1 = -1;
 282                 }
 283         }
 284 
 285         if (s1 >= 0) {
 286                 if (s1 < 0x80) {        /* latin */
 287                         CK((*filter->output_function)(s1, filter->data));
 288                 } else if (s1 < 0x100) {        /* kana */
 289                         CK((*filter->output_function)(0x8e, filter->data));
 290                         CK((*filter->output_function)(s1, filter->data));
 291                 } else if (s1 < 0x8080)  {      /* X 0208 */
 292                         CK((*filter->output_function)(((s1 >> 8) & 0xff) | 0x80, filter->data));
 293                         CK((*filter->output_function)((s1 & 0xff) | 0x80, filter->data));
 294                 } else {
 295                   if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
 296                     CK(mbfl_filt_conv_illegal_output(c, filter));
 297                   }
 298                 }
 299         } else {
 300                 if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
 301                         CK(mbfl_filt_conv_illegal_output(c, filter));
 302                 }
 303         }
 304 
 305         return c;
 306 }
 307 
 308 static int mbfl_filt_ident_cp51932(int c, mbfl_identify_filter *filter)
 309 {
 310         switch (filter->status) {
 311         case  0:        /* latin */
 312                 if (c >= 0 && c < 0x80) {       /* ok */
 313                         ;
 314                 } else if (c > 0xa0 && c < 0xff) {      /* kanji first char */
 315                         filter->status = 1;
 316                 } else if (c == 0x8e) {                         /* kana first char */
 317                         filter->status = 2;
 318                 } else {                                                        /* bad */
 319                         filter->flag = 1;
 320                 }
 321                 break;
 322 
 323         case  1:        /* got first half */
 324                 if (c < 0xa1 || c > 0xfe) {             /* bad */
 325                         filter->flag = 1;
 326                 }
 327                 filter->status = 0;
 328                 break;
 329 
 330         case  2:        /* got 0x8e */
 331                 if (c < 0xa1 || c > 0xdf) {             /* bad */
 332                         filter->flag = 1;
 333                 }
 334                 filter->status = 0;
 335                 break;
 336 
 337         default:
 338                 filter->status = 0;
 339                 break;
 340         }
 341 
 342         return c;
 343 }
 344 
 345
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root/ext/mbstring/libmbfl/filters/mbfilter_cp51932.c

DEFINITIONS
