iconvdata/tcvn5712-1.c

   1 /* Conversion to and from TCVN5712-1.
   2    Copyright (C) 2001, 2002, 2004 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library 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 GNU
  14    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 the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <dlfcn.h>
  22 #include <stdint.h>
  23 #include <stdlib.h>
  24
  25 #define NELEMS(arr) (sizeof (arr) / sizeof (arr[0]))
  26
  27 /* Definitions used in the body of the `gconv' function.  */
  28 #define CHARSET_NAME            "TCVN5712-1//"
  29 #define FROM_LOOP               from_tcvn5712_1
  30 #define TO_LOOP                 to_tcvn5712_1
  31 #define DEFINE_INIT             1
  32 #define DEFINE_FINI             1
  33 #define FROM_LOOP_MIN_NEEDED_FROM       1
  34 #define FROM_LOOP_MAX_NEEDED_FROM       1
  35 #define FROM_LOOP_MIN_NEEDED_TO         4
  36 #define FROM_LOOP_MAX_NEEDED_TO         4
  37 #define TO_LOOP_MIN_NEEDED_FROM         4
  38 #define TO_LOOP_MAX_NEEDED_FROM         4
  39 #define TO_LOOP_MIN_NEEDED_TO           1
  40 #define TO_LOOP_MAX_NEEDED_TO           2
  41 #define PREPARE_LOOP \
  42   int saved_state;                                                            \
  43   int *statep = &data->__statep->__count;
  44 #define EXTRA_LOOP_ARGS         , statep
  45
  46
  47 /* Since we might have to reset input pointer we must be able to save
  48    and restore the state.  */
  49 #define SAVE_RESET_STATE(Save) \
  50   if (Save)                                                                   \
  51     saved_state = *statep;                                                    \
  52   else                                                                        \
  53     *statep = saved_state
  54
  55
  56 /* During TCVN5712-1 to UCS4 conversion, the COUNT element of the state
  57    contains the last UCS4 character, shifted by 3 bits.  */
  58
  59
  60 /* Since this is a stateful encoding we have to provide code which resets
  61    the output state to the initial state.  This has to be done during the
  62    flushing.  */
  63 #define EMIT_SHIFT_TO_INIT \
  64   if (data->__statep->__count != 0)                                           \
  65     {                                                                         \
  66       if (FROM_DIRECTION)                                                     \
  67         {                                                                     \
  68           if (__builtin_expect (outbuf + 4 <= outend, 1))                     \
  69             {                                                                 \
  70               /* Write out the last character.  */                            \
  71               *((uint32_t *) outbuf) = data->__statep->__count >> 3;          \
  72               outbuf += sizeof (uint32_t);                                    \
  73               data->__statep->__count = 0;                                    \
  74             }                                                                 \
  75           else                                                                \
  76             /* We don't have enough room in the output buffer.  */            \
  77             status = __GCONV_FULL_OUTPUT;                                     \
  78         }                                                                     \
  79       else                                                                    \
  80         /* We don't use shift states in the TO_DIRECTION.  */                 \
  81         data->__statep->__count = 0;                                          \
  82     }
  83
  84
  85 static const uint16_t map_from_tcvn_low[0x18] =
  86   {
  87     0x0000, 0x00da, 0x1ee4, 0x0003, 0x1eea, 0x1eec, 0x1eee, 0x0007,
  88     0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
  89     0x0010, 0x1ee8, 0x1ef0, 0x1ef2, 0x1ef6, 0x1ef8, 0x00dd, 0x1ef4
  90   };
  91
  92 static const uint16_t map_from_tcvn_high[0x80] =
  93   {
  94     0x00c0, 0x1ea2, 0x00c3, 0x00c1, 0x1ea0, 0x1eb6, 0x1eac, 0x00c8,
  95     0x1eba, 0x1ebc, 0x00c9, 0x1eb8, 0x1ec6, 0x00cc, 0x1ec8, 0x0128,
  96     0x00cd, 0x1eca, 0x00d2, 0x1ece, 0x00d5, 0x00d3, 0x1ecc, 0x1ed8,
  97     0x1edc, 0x1ede, 0x1ee0, 0x1eda, 0x1ee2, 0x00d9, 0x1ee6, 0x0168,
  98     0x00a0, 0x0102, 0x00c2, 0x00ca, 0x00d4, 0x01a0, 0x01af, 0x0110,
  99     0x0103, 0x00e2, 0x00ea, 0x00f4, 0x01a1, 0x01b0, 0x0111, 0x1eb0,
 100     0x0300, 0x0309, 0x0303, 0x0301, 0x0323, 0x00e0, 0x1ea3, 0x00e3,
 101     0x00e1, 0x1ea1, 0x1eb2, 0x1eb1, 0x1eb3, 0x1eb5, 0x1eaf, 0x1eb4,
 102     0x1eae, 0x1ea6, 0x1ea8, 0x1eaa, 0x1ea4, 0x1ec0, 0x1eb7, 0x1ea7,
 103     0x1ea9, 0x1eab, 0x1ea5, 0x1ead, 0x00e8, 0x1ec2, 0x1ebb, 0x1ebd,
 104     0x00e9, 0x1eb9, 0x1ec1, 0x1ec3, 0x1ec5, 0x1ebf, 0x1ec7, 0x00ec,
 105     0x1ec9, 0x1ec4, 0x1ebe, 0x1ed2, 0x0129, 0x00ed, 0x1ecb, 0x00f2,
 106     0x1ed4, 0x1ecf, 0x00f5, 0x00f3, 0x1ecd, 0x1ed3, 0x1ed5, 0x1ed7,
 107     0x1ed1, 0x1ed9, 0x1edd, 0x1edf, 0x1ee1, 0x1edb, 0x1ee3, 0x00f9,
 108     0x1ed6, 0x1ee7, 0x0169, 0x00fa, 0x1ee5, 0x1eeb, 0x1eed, 0x1eef,
 109     0x1ee9, 0x1ef1, 0x1ef3, 0x1ef7, 0x1ef9, 0x00fd, 0x1ef5, 0x1ed0
 110   };
 111
 112
 113 /* TCVN5712-1 contains five combining characters:
 114    0x0300, 0x0301, 0x0303, 0x0309, 0x0323.  */
 115
 116 /* Composition tables for each of the relevant combining characters.  */
 117 static const struct
 118 {
 119   uint16_t base;
 120   uint16_t composed;
 121 } comp_table_data[] =
 122   {
 123 #define COMP_TABLE_IDX_0300 0
 124 #define COMP_TABLE_LEN_0300 28
 125     { 0x0041, 0x00C0 },
 126     { 0x0045, 0x00C8 },
 127     { 0x0049, 0x00CC },
 128     { 0x004E, 0x01F8 },
 129     { 0x004F, 0x00D2 },
 130     { 0x0055, 0x00D9 },
 131     { 0x0057, 0x1E80 },
 132     { 0x0059, 0x1EF2 },
 133     { 0x0061, 0x00E0 },
 134     { 0x0065, 0x00E8 },
 135     { 0x0069, 0x00EC },
 136     { 0x006E, 0x01F9 },
 137     { 0x006F, 0x00F2 },
 138     { 0x0075, 0x00F9 },
 139     { 0x0077, 0x1E81 },
 140     { 0x0079, 0x1EF3 },
 141   /*{ 0x00A8, 0x1FED },*/
 142     { 0x00C2, 0x1EA6 },
 143     { 0x00CA, 0x1EC0 },
 144     { 0x00D4, 0x1ED2 },
 145   /*{ 0x00DC, 0x01DB },*/
 146     { 0x00E2, 0x1EA7 },
 147     { 0x00EA, 0x1EC1 },
 148     { 0x00F4, 0x1ED3 },
 149   /*{ 0x00FC, 0x01DC },*/
 150     { 0x0102, 0x1EB0 },
 151     { 0x0103, 0x1EB1 },
 152   /*{ 0x0112, 0x1E14 },*/
 153   /*{ 0x0113, 0x1E15 },*/
 154   /*{ 0x014C, 0x1E50 },*/
 155   /*{ 0x014D, 0x1E51 },*/
 156     { 0x01A0, 0x1EDC },
 157     { 0x01A1, 0x1EDD },
 158     { 0x01AF, 0x1EEA },
 159     { 0x01B0, 0x1EEB },
 160 #define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300)
 161 #define COMP_TABLE_LEN_0301 51
 162     { 0x0041, 0x00C1 },
 163     { 0x0043, 0x0106 },
 164     { 0x0045, 0x00C9 },
 165     { 0x0047, 0x01F4 },
 166     { 0x0049, 0x00CD },
 167     { 0x004B, 0x1E30 },
 168     { 0x004C, 0x0139 },
 169     { 0x004D, 0x1E3E },
 170     { 0x004E, 0x0143 },
 171     { 0x004F, 0x00D3 },
 172     { 0x0050, 0x1E54 },
 173     { 0x0052, 0x0154 },
 174     { 0x0053, 0x015A },
 175     { 0x0055, 0x00DA },
 176     { 0x0057, 0x1E82 },
 177     { 0x0059, 0x00DD },
 178     { 0x005A, 0x0179 },
 179     { 0x0061, 0x00E1 },
 180     { 0x0063, 0x0107 },
 181     { 0x0065, 0x00E9 },
 182     { 0x0067, 0x01F5 },
 183     { 0x0069, 0x00ED },
 184     { 0x006B, 0x1E31 },
 185     { 0x006C, 0x013A },
 186     { 0x006D, 0x1E3F },
 187     { 0x006E, 0x0144 },
 188     { 0x006F, 0x00F3 },
 189     { 0x0070, 0x1E55 },
 190     { 0x0072, 0x0155 },
 191     { 0x0073, 0x015B },
 192     { 0x0075, 0x00FA },
 193     { 0x0077, 0x1E83 },
 194     { 0x0079, 0x00FD },
 195     { 0x007A, 0x017A },
 196     { 0x00A5, 0x0385 },
 197   /*{ 0x00A8, 0x1FEE },*/
 198     { 0x00C2, 0x1EA4 },
 199   /*{ 0x00C5, 0x01FA },*/
 200   /*{ 0x00C6, 0x01FC },*/
 201   /*{ 0x00C7, 0x1E08 },*/
 202     { 0x00CA, 0x1EBE },
 203   /*{ 0x00CF, 0x1E2E },*/
 204     { 0x00D4, 0x1ED0 },
 205     { 0x00D5, 0x1E4C },
 206   /*{ 0x00D8, 0x01FE },*/
 207   /*{ 0x00DC, 0x01D7 },*/
 208     { 0x00E2, 0x1EA5 },
 209   /*{ 0x00E5, 0x01FB },*/
 210   /*{ 0x00E6, 0x01FD },*/
 211   /*{ 0x00E7, 0x1E09 },*/
 212     { 0x00EA, 0x1EBF },
 213   /*{ 0x00EF, 0x1E2F },*/
 214     { 0x00F4, 0x1ED1 },
 215     { 0x00F5, 0x1E4D },
 216   /*{ 0x00F8, 0x01FF },*/
 217   /*{ 0x00FC, 0x01D8 },*/
 218     { 0x0102, 0x1EAE },
 219     { 0x0103, 0x1EAF },
 220   /*{ 0x0112, 0x1E16 },*/
 221   /*{ 0x0113, 0x1E17 },*/
 222   /*{ 0x014C, 0x1E52 },*/
 223   /*{ 0x014D, 0x1E53 },*/
 224     { 0x0168, 0x1E78 },
 225     { 0x0169, 0x1E79 },
 226     { 0x01A0, 0x1EDA },
 227     { 0x01A1, 0x1EDB },
 228     { 0x01AF, 0x1EE8 },
 229     { 0x01B0, 0x1EE9 },
 230 #define COMP_TABLE_IDX_0303 (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301)
 231 #define COMP_TABLE_LEN_0303 34
 232     { 0x0041, 0x00C3 },
 233     { 0x0045, 0x1EBC },
 234     { 0x0049, 0x0128 },
 235     { 0x004E, 0x00D1 },
 236     { 0x004F, 0x00D5 },
 237     { 0x0055, 0x0168 },
 238     { 0x0056, 0x1E7C },
 239     { 0x0059, 0x1EF8 },
 240     { 0x0061, 0x00E3 },
 241     { 0x0065, 0x1EBD },
 242     { 0x0069, 0x0129 },
 243     { 0x006E, 0x00F1 },
 244     { 0x006F, 0x00F5 },
 245     { 0x0075, 0x0169 },
 246     { 0x0076, 0x1E7D },
 247     { 0x0079, 0x1EF9 },
 248     { 0x00C2, 0x1EAA },
 249     { 0x00CA, 0x1EC4 },
 250     { 0x00D3, 0x1E4C },
 251     { 0x00D4, 0x1ED6 },
 252     { 0x00D6, 0x1E4E },
 253     { 0x00DA, 0x1E78 },
 254     { 0x00E2, 0x1EAB },
 255     { 0x00EA, 0x1EC5 },
 256     { 0x00F3, 0x1E4D },
 257     { 0x00F4, 0x1ED7 },
 258     { 0x00F6, 0x1E4F },
 259     { 0x00FA, 0x1E79 },
 260     { 0x0102, 0x1EB4 },
 261     { 0x0103, 0x1EB5 },
 262     { 0x01A0, 0x1EE0 },
 263     { 0x01A1, 0x1EE1 },
 264     { 0x01AF, 0x1EEE },
 265     { 0x01B0, 0x1EEF },
 266 #define COMP_TABLE_IDX_0309 (COMP_TABLE_IDX_0303 + COMP_TABLE_LEN_0303)
 267 #define COMP_TABLE_LEN_0309 24
 268     { 0x0041, 0x1EA2 },
 269     { 0x0045, 0x1EBA },
 270     { 0x0049, 0x1EC8 },
 271     { 0x004F, 0x1ECE },
 272     { 0x0055, 0x1EE6 },
 273     { 0x0059, 0x1EF6 },
 274     { 0x0061, 0x1EA3 },
 275     { 0x0065, 0x1EBB },
 276     { 0x0069, 0x1EC9 },
 277     { 0x006F, 0x1ECF },
 278     { 0x0075, 0x1EE7 },
 279     { 0x0079, 0x1EF7 },
 280     { 0x00C2, 0x1EA8 },
 281     { 0x00CA, 0x1EC2 },
 282     { 0x00D4, 0x1ED4 },
 283     { 0x00E2, 0x1EA9 },
 284     { 0x00EA, 0x1EC3 },
 285     { 0x00F4, 0x1ED5 },
 286     { 0x0102, 0x1EB2 },
 287     { 0x0103, 0x1EB3 },
 288     { 0x01A0, 0x1EDE },
 289     { 0x01A1, 0x1EDF },
 290     { 0x01AF, 0x1EEC },
 291     { 0x01B0, 0x1EED },
 292 #define COMP_TABLE_IDX_0323 (COMP_TABLE_IDX_0309 + COMP_TABLE_LEN_0309)
 293 #define COMP_TABLE_LEN_0323 50
 294     { 0x0041, 0x1EA0 },
 295     { 0x0042, 0x1E04 },
 296     { 0x0044, 0x1E0C },
 297     { 0x0045, 0x1EB8 },
 298     { 0x0048, 0x1E24 },
 299     { 0x0049, 0x1ECA },
 300     { 0x004B, 0x1E32 },
 301     { 0x004C, 0x1E36 },
 302     { 0x004D, 0x1E42 },
 303     { 0x004E, 0x1E46 },
 304     { 0x004F, 0x1ECC },
 305     { 0x0052, 0x1E5A },
 306     { 0x0053, 0x1E62 },
 307     { 0x0054, 0x1E6C },
 308     { 0x0055, 0x1EE4 },
 309     { 0x0056, 0x1E7E },
 310     { 0x0057, 0x1E88 },
 311     { 0x0059, 0x1EF4 },
 312     { 0x005A, 0x1E92 },
 313     { 0x0061, 0x1EA1 },
 314     { 0x0062, 0x1E05 },
 315     { 0x0064, 0x1E0D },
 316     { 0x0065, 0x1EB9 },
 317     { 0x0068, 0x1E25 },
 318     { 0x0069, 0x1ECB },
 319     { 0x006B, 0x1E33 },
 320     { 0x006C, 0x1E37 },
 321     { 0x006D, 0x1E43 },
 322     { 0x006E, 0x1E47 },
 323     { 0x006F, 0x1ECD },
 324     { 0x0072, 0x1E5B },
 325     { 0x0073, 0x1E63 },
 326     { 0x0074, 0x1E6D },
 327     { 0x0075, 0x1EE5 },
 328     { 0x0076, 0x1E7F },
 329     { 0x0077, 0x1E89 },
 330     { 0x0079, 0x1EF5 },
 331     { 0x007A, 0x1E93 },
 332     { 0x00C2, 0x1EAC },
 333     { 0x00CA, 0x1EC6 },
 334     { 0x00D4, 0x1ED8 },
 335     { 0x00E2, 0x1EAD },
 336     { 0x00EA, 0x1EC7 },
 337     { 0x00F4, 0x1ED9 },
 338     { 0x0102, 0x1EB6 },
 339     { 0x0103, 0x1EB7 },
 340     { 0x01A0, 0x1EE2 },
 341     { 0x01A1, 0x1EE3 },
 342     { 0x01AF, 0x1EF0 },
 343     { 0x01B0, 0x1EF1 },
 344 #define COMP_TABLE_IDX_END (COMP_TABLE_IDX_0323 + COMP_TABLE_LEN_0323)
 345   };
 346 /* Compile-time verification of table size.  */
 347 typedef int verify1[(NELEMS (comp_table_data) == COMP_TABLE_IDX_END) - 1];
 348
 349 static const struct
 350 {
 351   unsigned int idx;
 352   unsigned int len;
 353 } comp_table[5] =
 354   {
 355     { COMP_TABLE_IDX_0300, COMP_TABLE_LEN_0300 },
 356     { COMP_TABLE_IDX_0301, COMP_TABLE_LEN_0301 },
 357     { COMP_TABLE_IDX_0303, COMP_TABLE_LEN_0303 },
 358     { COMP_TABLE_IDX_0309, COMP_TABLE_LEN_0309 },
 359     { COMP_TABLE_IDX_0323, COMP_TABLE_LEN_0323 },
 360   };
 361
 362
 363 /* First define the conversion function from TCVN5712-1 to UCS4.  */
 364 #define MIN_NEEDED_INPUT        FROM_LOOP_MIN_NEEDED_FROM
 365 #define MAX_NEEDED_INPUT        FROM_LOOP_MAX_NEEDED_FROM
 366 #define MIN_NEEDED_OUTPUT       FROM_LOOP_MIN_NEEDED_TO
 367 #define MAX_NEEDED_OUTPUT       FROM_LOOP_MAX_NEEDED_TO
 368 #define LOOPFCT                 FROM_LOOP
 369 #define BODY \
 370   {                                                                           \
 371     uint32_t ch = *inptr;                                                     \
 372     uint32_t last_ch;                                                         \
 373     int must_buffer_ch;                                                       \
 374                                                                               \
 375     if (ch < 0x18)                                                            \
 376       ch = map_from_tcvn_low[ch];                                             \
 377     else if (ch >= 0x80)                                                      \
 378       ch = map_from_tcvn_high[ch - 0x80];                                     \
 379                                                                               \
 380     /* Determine whether there is a buffered character pending.  */           \
 381     last_ch = *statep >> 3;                                                   \
 382                                                                               \
 383     /* We have to buffer ch if it is a possible match in comp_table_data.  */ \
 384     must_buffer_ch = (ch >= 0x0041 && ch <= 0x01b0);                          \
 385                                                                               \
 386     if (last_ch)                                                              \
 387       {                                                                       \
 388         if (ch >= 0x0300 && ch < 0x0340)                                      \
 389           {                                                                   \
 390             /* See whether last_ch and ch can be combined.  */                \
 391             unsigned int i;                                                   \
 392             unsigned int i1;                                                  \
 393             unsigned int i2;                                                  \
 394                                                                               \
 395             switch (ch)                                                       \
 396               {                                                               \
 397               case 0x0300:                                                    \
 398                 i = 0;                                                        \
 399                 break;                                                        \
 400               case 0x0301:                                                    \
 401                 i = 1;                                                        \
 402                 break;                                                        \
 403               case 0x0303:                                                    \
 404                 i = 2;                                                        \
 405                 break;                                                        \
 406               case 0x0309:                                                    \
 407                 i = 3;                                                        \
 408                 break;                                                        \
 409               case 0x0323:                                                    \
 410                 i = 4;                                                        \
 411                 break;                                                        \
 412               default:                                                        \
 413                 abort ();                                                     \
 414               }                                                               \
 415                                                                               \
 416             i1 = comp_table[i].idx;                                           \
 417             i2 = i1 + comp_table[i].len - 1;                                  \
 418                                                                               \
 419             if (last_ch >= comp_table_data[i1].base                           \
 420                 && last_ch <= comp_table_data[i2].base)                       \
 421               {                                                               \
 422                 for (;;)                                                      \
 423                   {                                                           \
 424                     i = (i1 + i2) >> 1;                                       \
 425                     if (last_ch == comp_table_data[i].base)                   \
 426                       break;                                                  \
 427                     if (last_ch < comp_table_data[i].base)                    \
 428                       {                                                       \
 429                         if (i1 == i)                                          \
 430                           goto not_combining;                                 \
 431                         i2 = i;                                               \
 432                       }                                                       \
 433                     else                                                      \
 434                       {                                                       \
 435                         if (i1 != i)                                          \
 436                           i1 = i;                                             \
 437                         else                                                  \
 438                           {                                                   \
 439                             i = i2;                                           \
 440                             if (last_ch == comp_table_data[i].base)           \
 441                               break;                                          \
 442                             goto not_combining;                               \
 443                           }                                                   \
 444                       }                                                       \
 445                   }                                                           \
 446                 last_ch = comp_table_data[i].composed;                        \
 447                 /* Output the combined character.  */                         \
 448                 put32 (outptr, last_ch);                                      \
 449                 outptr += 4;                                                  \
 450                 *statep = 0;                                                  \
 451                 ++inptr;                                                      \
 452                 continue;                                                     \
 453               }                                                               \
 454           }                                                                   \
 455                                                                               \
 456       not_combining:                                                          \
 457         /* Output the buffered character.  */                                 \
 458         put32 (outptr, last_ch);                                              \
 459         outptr += 4;                                                          \
 460         *statep = 0;                                                          \
 461                                                                               \
 462         /* If we don't have enough room to output ch as well, then deal       \
 463            with it in another round.  */                                      \
 464         if (!must_buffer_ch && __builtin_expect (outptr + 4 > outend, 0))     \
 465           continue;                                                           \
 466       }                                                                       \
 467                                                                               \
 468     if (must_buffer_ch)                                                       \
 469       *statep = ch << 3;                                                      \
 470     else                                                                      \
 471       {                                                                       \
 472         put32 (outptr, ch);                                                   \
 473         outptr += 4;                                                          \
 474       }                                                                       \
 475     ++inptr;                                                                  \
 476   }
 477 #define EXTRA_LOOP_DECLS        , int *statep
 478 #define ONEBYTE_BODY \
 479   {                                                                           \
 480     uint32_t ch;                                                              \
 481                                                                               \
 482     if (c < 0x18)                                                             \
 483       ch = map_from_tcvn_low[c];                                              \
 484     else if (c >= 0x80)                                                       \
 485       ch = map_from_tcvn_high[c - 0x80];                                      \
 486     else                                                                      \
 487       ch = c;                                                                 \
 488     if (ch >= 0x0041 && ch <= 0x01b0)                                         \
 489       return WEOF;                                                            \
 490     return ch;                                                                \
 491   }
 492 #include <iconv/loop.c>
 493
 494
 495 /* Next, define the conversion function from UCS4 to CP1258.  */
 496
 497 static const unsigned char from_ucs4[] =
 498   {
 499 #define FROM_IDX_00 0
 500     0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x07, /* 0x0001-0x0007 */
 501     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x0008-0x000f */
 502     0x10,                                           /* 0x0010-0x0010 */
 503
 504 #define FROM_IDX_01 (FROM_IDX_00 + 16)
 505     0x80, 0x83, 0xa2, 0x82, 0x00, 0x00, 0x00, 0x00, /* 0x00c0-0x00c7 */
 506     0x87, 0x8a, 0xa3, 0x00, 0x8d, 0x90, 0x00, 0x00, /* 0x00c8-0x00cf */
 507     0x00, 0x00, 0x92, 0x95, 0xa4, 0x94, 0x00, 0x00, /* 0x00d0-0x00d7 */
 508     0x00, 0x9d, 0x01, 0x00, 0x00, 0x16, 0x00, 0x00, /* 0x00d8-0x00df */
 509     0xb5, 0xb8, 0xa9, 0xb7, 0x00, 0x00, 0x00, 0x00, /* 0x00e0-0x00e7 */
 510     0xcc, 0xd0, 0xaa, 0x00, 0xd7, 0xdd, 0x00, 0x00, /* 0x00e8-0x00ef */
 511     0x00, 0x00, 0xdf, 0xe3, 0xab, 0xe2, 0x00, 0x00, /* 0x00f0-0x00f7 */
 512     0x00, 0xef, 0xf3, 0x00, 0x00, 0xfd, 0x00, 0x00, /* 0x00f8-0x00ff */
 513     0x00, 0x00, 0xa1, 0xa8, 0x00, 0x00, 0x00, 0x00, /* 0x0100-0x0107 */
 514     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0108-0x010f */
 515     0xa7, 0xae, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0110-0x0117 */
 516     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0118-0x011f */
 517     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0120-0x0127 */
 518     0x8f, 0xdc,                                     /* 0x0128-0x0129 */
 519
 520 #define FROM_IDX_02 (FROM_IDX_01 + 106)
 521     0x9f, 0xf2,                                     /* 0x0168-0x0169 */
 522
 523 #define FROM_IDX_03 (FROM_IDX_02 + 2)
 524     0xa5, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x01a0-0x01a7 */
 525     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa6, /* 0x01a8-0x01af */
 526     0xad,                                           /* 0x01b0-0x01b0 */
 527
 528 #define FROM_IDX_04 (FROM_IDX_03 + 17)
 529     0xb0, 0xb3, 0x00, 0xb2, 0x00, 0x00, 0x00, 0x00, /* 0x0300-0x0307 */
 530     0x00, 0xb1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0308-0x030f */
 531     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0310-0x0317 */
 532     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0318-0x031f */
 533     0x00, 0x00, 0x00, 0xb4,                         /* 0x0320-0x0323 */
 534
 535 #define FROM_IDX_05 (FROM_IDX_04 + 36)
 536     0x84, 0xb9, 0x81, 0xb6, 0xc4, 0xca, 0xc1, 0xc7, /* 0x1ea0-0x1ea7 */
 537     0xc2, 0xc8, 0xc3, 0xc9, 0x86, 0xcb, 0xc0, 0xbe, /* 0x1ea8-0x1eaf */
 538     0xaf, 0xbb, 0xba, 0xbc, 0xbf, 0xbd, 0x85, 0xc6, /* 0x1eb0-0x1eb7 */
 539     0x8b, 0xd1, 0x88, 0xce, 0x89, 0xcf, 0xda, 0xd5, /* 0x1eb8-0x1ebf */
 540     0xc5, 0xd2, 0xcd, 0xd3, 0xd9, 0xd4, 0x8c, 0xd6, /* 0x1ec0-0x1ec7 */
 541     0x8e, 0xd8, 0x91, 0xde, 0x96, 0xe4, 0x93, 0xe1, /* 0x1ec8-0x1ecf */
 542     0xff, 0xe8, 0xdb, 0xe5, 0xe0, 0xe6, 0xf0, 0xe7, /* 0x1ed0-0x1ed7 */
 543     0x97, 0xe9, 0x9b, 0xed, 0x98, 0xea, 0x99, 0xeb, /* 0x1ed8-0x1edf */
 544     0x9a, 0xec, 0x9c, 0xee, 0x02, 0xf4, 0x9e, 0xf1, /* 0x1ee0-0x1ee7 */
 545     0x11, 0xf8, 0x04, 0xf5, 0x05, 0xf6, 0x06, 0xf7, /* 0x1ee8-0x1eef */
 546     0x12, 0xf9, 0x13, 0xfa, 0x17, 0xfe, 0x14, 0xfb, /* 0x1ef0-0x1ef7 */
 547     0x15, 0xfc                                      /* 0x1ef8-0x1ef9 */
 548 #define FROM_IDX_END (FROM_IDX_05 + 90)
 549   };
 550 /* Compile-time verification of table size.  */
 551 typedef int verify2[(NELEMS (from_ucs4) == FROM_IDX_END) - 1];
 552
 553 /* Decomposition table for the relevant Unicode characters. */
 554 static const struct
 555 {
 556   uint16_t composed;
 557   uint32_t base:8;
 558   uint32_t comb1:8;
 559 } decomp_table[] =
 560   {
 561     { 0x00d1, 0x4e, 0xb2 },
 562     { 0x00f1, 0x6e, 0xb2 },
 563     { 0x0106, 0x43, 0xb3 },
 564     { 0x0107, 0x63, 0xb3 },
 565     { 0x0139, 0x4c, 0xb3 },
 566     { 0x013a, 0x6c, 0xb3 },
 567     { 0x0143, 0x4e, 0xb3 },
 568     { 0x0144, 0x6e, 0xb3 },
 569     { 0x0154, 0x52, 0xb3 },
 570     { 0x0155, 0x72, 0xb3 },
 571     { 0x015a, 0x53, 0xb3 },
 572     { 0x015b, 0x73, 0xb3 },
 573     { 0x0179, 0x5a, 0xb3 },
 574     { 0x017a, 0x7a, 0xb3 },
 575     { 0x01f4, 0x47, 0xb3 },
 576     { 0x01f5, 0x67, 0xb3 },
 577     { 0x01f8, 0x4e, 0xb0 },
 578     { 0x01f9, 0x6e, 0xb0 },
 579     { 0x1e04, 0x42, 0xb4 },
 580     { 0x1e05, 0x62, 0xb4 },
 581     { 0x1e0c, 0x44, 0xb4 },
 582     { 0x1e0d, 0x64, 0xb4 },
 583     { 0x1e24, 0x48, 0xb4 },
 584     { 0x1e25, 0x68, 0xb4 },
 585     { 0x1e30, 0x4b, 0xb3 },
 586     { 0x1e31, 0x6b, 0xb3 },
 587     { 0x1e32, 0x4b, 0xb4 },
 588     { 0x1e33, 0x6b, 0xb4 },
 589     { 0x1e36, 0x4c, 0xb4 },
 590     { 0x1e37, 0x6c, 0xb4 },
 591     { 0x1e3e, 0x4d, 0xb3 },
 592     { 0x1e3f, 0x6d, 0xb3 },
 593     { 0x1e42, 0x4d, 0xb4 },
 594     { 0x1e43, 0x6d, 0xb4 },
 595     { 0x1e46, 0x4e, 0xb4 },
 596     { 0x1e47, 0x6e, 0xb4 },
 597     { 0x1e54, 0x50, 0xb3 },
 598     { 0x1e55, 0x70, 0xb3 },
 599     { 0x1e5a, 0x52, 0xb4 },
 600     { 0x1e5b, 0x72, 0xb4 },
 601     { 0x1e62, 0x53, 0xb4 },
 602     { 0x1e63, 0x73, 0xb4 },
 603     { 0x1e6c, 0x54, 0xb4 },
 604     { 0x1e6d, 0x74, 0xb4 },
 605     { 0x1e7c, 0x56, 0xb2 },
 606     { 0x1e7d, 0x76, 0xb2 },
 607     { 0x1e7e, 0x56, 0xb4 },
 608     { 0x1e7f, 0x76, 0xb4 },
 609     { 0x1e80, 0x57, 0xb0 },
 610     { 0x1e81, 0x77, 0xb0 },
 611     { 0x1e82, 0x57, 0xb3 },
 612     { 0x1e83, 0x77, 0xb3 },
 613     { 0x1e88, 0x57, 0xb4 },
 614     { 0x1e89, 0x77, 0xb4 },
 615     { 0x1e92, 0x5a, 0xb4 },
 616     { 0x1e93, 0x7a, 0xb4 },
 617   };
 618
 619
 620 /* Next, define the other direction.  */
 621 #define MIN_NEEDED_INPUT        TO_LOOP_MIN_NEEDED_FROM
 622 #define MAX_NEEDED_INPUT        TO_LOOP_MAX_NEEDED_FROM
 623 #define MIN_NEEDED_OUTPUT       TO_LOOP_MIN_NEEDED_TO
 624 #define MAX_NEEDED_OUTPUT       TO_LOOP_MAX_NEEDED_TO
 625 #define LOOPFCT                 TO_LOOP
 626 #define BODY \
 627   {                                                                           \
 628     uint32_t ch = get32 (inptr);                                              \
 629                                                                               \
 630     if (ch == 0x00 || (ch >= 0x18 && ch < 0x80) || ch == 0xa0)                \
 631       {                                                                       \
 632         *outptr++ = ch;                                                       \
 633         inptr += 4;                                                           \
 634       }                                                                       \
 635     else                                                                      \
 636       {                                                                       \
 637         unsigned char res;                                                    \
 638                                                                               \
 639         if (ch <= 0x0010)                                                     \
 640           res = from_ucs4[ch - 0x0001 + FROM_IDX_00];                         \
 641         else if (ch >= 0x00c0 && ch <= 0x0129)                                \
 642           res = from_ucs4[ch - 0x00c0 + FROM_IDX_01];                         \
 643         else if (ch >= 0x0168 && ch <= 0x0169)                                \
 644           res = from_ucs4[ch - 0x0168 + FROM_IDX_02];                         \
 645         else if (ch >= 0x01a0 && ch <= 0x01b0)                                \
 646           res = from_ucs4[ch - 0x01a0 + FROM_IDX_03];                         \
 647         else if (ch >= 0x0300 && ch <= 0x0323)                                \
 648           res = from_ucs4[ch - 0x0300 + FROM_IDX_04];                         \
 649         else if (ch >= 0x1ea0 && ch <= 0x1ef9)                                \
 650           res = from_ucs4[ch - 0x1ea0 + FROM_IDX_05];                         \
 651         else                                                                  \
 652           {                                                                   \
 653             UNICODE_TAG_HANDLER (ch, 4);                                      \
 654             res = 0;                                                          \
 655           }                                                                   \
 656                                                                               \
 657         if (__builtin_expect (res != 0, 1))                                   \
 658           {                                                                   \
 659             *outptr++ = res;                                                  \
 660             inptr += 4;                                                       \
 661           }                                                                   \
 662         else                                                                  \
 663           {                                                                   \
 664             /* Try canonical decomposition.  */                               \
 665             unsigned int i1;                                                  \
 666             unsigned int i2;                                                  \
 667                                                                               \
 668             i1 = 0;                                                           \
 669             i2 = sizeof (decomp_table) / sizeof (decomp_table[0]) - 1;        \
 670             if (ch >= decomp_table[i1].composed                               \
 671                 && ch <= decomp_table[i2].composed)                           \
 672               {                                                               \
 673                 unsigned int i;                                               \
 674                                                                               \
 675                 for (;;)                                                      \
 676                   {                                                           \
 677                     i = (i1 + i2) >> 1;                                       \
 678                     if (ch == decomp_table[i].composed)                       \
 679                       break;                                                  \
 680                     if (ch < decomp_table[i].composed)                        \
 681                       {                                                       \
 682                         if (i1 == i)                                          \
 683                           goto failed;                                        \
 684                         i2 = i;                                               \
 685                       }                                                       \
 686                     else                                                      \
 687                       {                                                       \
 688                         if (i1 != i)                                          \
 689                           i1 = i;                                             \
 690                         else                                                  \
 691                           {                                                   \
 692                             i = i2;                                           \
 693                             if (ch == decomp_table[i].composed)               \
 694                               break;                                          \
 695                             goto failed;                                      \
 696                           }                                                   \
 697                       }                                                       \
 698                   }                                                           \
 699                                                                               \
 700                 /* See whether we have room for two bytes.  */                \
 701                 if (__builtin_expect (outptr + 1 >= outend, 0))               \
 702                   {                                                           \
 703                     result = __GCONV_FULL_OUTPUT;                             \
 704                     break;                                                    \
 705                   }                                                           \
 706                                                                               \
 707                 /* Found a canonical decomposition.  */                       \
 708                 *outptr++ = decomp_table[i].base;                             \
 709                 *outptr++ = decomp_table[i].comb1;                            \
 710                 inptr += 4;                                                   \
 711                 continue;                                                     \
 712               }                                                               \
 713                                                                               \
 714           failed:                                                             \
 715             /* This is an illegal character.  */                              \
 716             STANDARD_TO_LOOP_ERR_HANDLER (4);                                 \
 717           }                                                                   \
 718       }                                                                       \
 719   }
 720 #define LOOP_NEED_FLAGS
 721 #define EXTRA_LOOP_DECLS        , int *statep
 722 #include <iconv/loop.c>
 723
 724
 725 /* Now define the toplevel functions.  */
 726 #include <iconv/skeleton.c>