iconvdata/tcvn5712-1.c

   1 /* Conversion to and from TCVN5712-1.
   2    Copyright (C) 2001-2014 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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <dlfcn.h>
  21 #include <stdint.h>
  22 #include <stdlib.h>
  23
  24 #define NELEMS(arr) (sizeof (arr) / sizeof (arr[0]))
  25
  26 /* Definitions used in the body of the `gconv' function.  */
  27 #define CHARSET_NAME            "TCVN5712-1//"
  28 #define FROM_LOOP               from_tcvn5712_1
  29 #define TO_LOOP                 to_tcvn5712_1
  30 #define DEFINE_INIT             1
  31 #define DEFINE_FINI             1
  32 #define FROM_LOOP_MIN_NEEDED_FROM       1
  33 #define FROM_LOOP_MAX_NEEDED_FROM       1
  34 #define FROM_LOOP_MIN_NEEDED_TO         4
  35 #define FROM_LOOP_MAX_NEEDED_TO         4
  36 #define TO_LOOP_MIN_NEEDED_FROM         4
  37 #define TO_LOOP_MAX_NEEDED_FROM         4
  38 #define TO_LOOP_MIN_NEEDED_TO           1
  39 #define TO_LOOP_MAX_NEEDED_TO           2
  40 #define PREPARE_LOOP \
  41   int saved_state;                                                            \
  42   int *statep = &data->__statep->__count;
  43 #define EXTRA_LOOP_ARGS         , statep
  44
  45
  46 /* Since we might have to reset input pointer we must be able to save
  47    and restore the state.  */
  48 #define SAVE_RESET_STATE(Save) \
  49   if (Save)                                                                   \
  50     saved_state = *statep;                                                    \
  51   else                                                                        \
  52     *statep = saved_state
  53
  54
  55 /* During TCVN5712-1 to UCS4 conversion, the COUNT element of the state
  56    contains the last UCS4 character, shifted by 3 bits.  */
  57
  58
  59 /* Since this is a stateful encoding we have to provide code which resets
  60    the output state to the initial state.  This has to be done during the
  61    flushing.  */
  62 #define EMIT_SHIFT_TO_INIT \
  63   if (data->__statep->__count != 0)                                           \
  64     {                                                                         \
  65       if (FROM_DIRECTION)                                                     \
  66         {                                                                     \
  67           if (__builtin_expect (outbuf + 4 <= outend, 1))                     \
  68             {                                                                 \
  69               /* Write out the last character.  */                            \
  70               *((uint32_t *) outbuf) = data->__statep->__count >> 3;          \
  71               outbuf += sizeof (uint32_t);                                    \
  72               data->__statep->__count = 0;                                    \
  73             }                                                                 \
  74           else                                                                \
  75             /* We don't have enough room in the output buffer.  */            \
  76             status = __GCONV_FULL_OUTPUT;                                     \
  77         }                                                                     \
  78       else                                                                    \
  79         /* We don't use shift states in the TO_DIRECTION.  */                 \
  80         data->__statep->__count = 0;                                          \
  81     }
  82
  83
  84 static const uint16_t map_from_tcvn_low[0x18] =
  85   {
  86     0x0000, 0x00da, 0x1ee4, 0x0003, 0x1eea, 0x1eec, 0x1eee, 0x0007,
  87     0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
  88     0x0010, 0x1ee8, 0x1ef0, 0x1ef2, 0x1ef6, 0x1ef8, 0x00dd, 0x1ef4
  89   };
  90
  91 static const uint16_t map_from_tcvn_high[0x80] =
  92   {
  93     0x00c0, 0x1ea2, 0x00c3, 0x00c1, 0x1ea0, 0x1eb6, 0x1eac, 0x00c8,
  94     0x1eba, 0x1ebc, 0x00c9, 0x1eb8, 0x1ec6, 0x00cc, 0x1ec8, 0x0128,
  95     0x00cd, 0x1eca, 0x00d2, 0x1ece, 0x00d5, 0x00d3, 0x1ecc, 0x1ed8,
  96     0x1edc, 0x1ede, 0x1ee0, 0x1eda, 0x1ee2, 0x00d9, 0x1ee6, 0x0168,
  97     0x00a0, 0x0102, 0x00c2, 0x00ca, 0x00d4, 0x01a0, 0x01af, 0x0110,
  98     0x0103, 0x00e2, 0x00ea, 0x00f4, 0x01a1, 0x01b0, 0x0111, 0x1eb0,
  99     0x0300, 0x0309, 0x0303, 0x0301, 0x0323, 0x00e0, 0x1ea3, 0x00e3,
 100     0x00e1, 0x1ea1, 0x1eb2, 0x1eb1, 0x1eb3, 0x1eb5, 0x1eaf, 0x1eb4,
 101     0x1eae, 0x1ea6, 0x1ea8, 0x1eaa, 0x1ea4, 0x1ec0, 0x1eb7, 0x1ea7,
 102     0x1ea9, 0x1eab, 0x1ea5, 0x1ead, 0x00e8, 0x1ec2, 0x1ebb, 0x1ebd,
 103     0x00e9, 0x1eb9, 0x1ec1, 0x1ec3, 0x1ec5, 0x1ebf, 0x1ec7, 0x00ec,
 104     0x1ec9, 0x1ec4, 0x1ebe, 0x1ed2, 0x0129, 0x00ed, 0x1ecb, 0x00f2,
 105     0x1ed4, 0x1ecf, 0x00f5, 0x00f3, 0x1ecd, 0x1ed3, 0x1ed5, 0x1ed7,
 106     0x1ed1, 0x1ed9, 0x1edd, 0x1edf, 0x1ee1, 0x1edb, 0x1ee3, 0x00f9,
 107     0x1ed6, 0x1ee7, 0x0169, 0x00fa, 0x1ee5, 0x1eeb, 0x1eed, 0x1eef,
 108     0x1ee9, 0x1ef1, 0x1ef3, 0x1ef7, 0x1ef9, 0x00fd, 0x1ef5, 0x1ed0
 109   };
 110
 111
 112 /* TCVN5712-1 contains five combining characters:
 113    0x0300, 0x0301, 0x0303, 0x0309, 0x0323.  */
 114
 115 /* Composition tables for each of the relevant combining characters.  */
 116 static const struct
 117 {
 118   uint16_t base;
 119   uint16_t composed;
 120 } comp_table_data[] =
 121   {
 122 #define COMP_TABLE_IDX_0300 0
 123 #define COMP_TABLE_LEN_0300 28
 124     { 0x0041, 0x00C0 },
 125     { 0x0045, 0x00C8 },
 126     { 0x0049, 0x00CC },
 127     { 0x004E, 0x01F8 },
 128     { 0x004F, 0x00D2 },
 129     { 0x0055, 0x00D9 },
 130     { 0x0057, 0x1E80 },
 131     { 0x0059, 0x1EF2 },
 132     { 0x0061, 0x00E0 },
 133     { 0x0065, 0x00E8 },
 134     { 0x0069, 0x00EC },
 135     { 0x006E, 0x01F9 },
 136     { 0x006F, 0x00F2 },
 137     { 0x0075, 0x00F9 },
 138     { 0x0077, 0x1E81 },
 139     { 0x0079, 0x1EF3 },
 140   /*{ 0x00A8, 0x1FED },*/
 141     { 0x00C2, 0x1EA6 },
 142     { 0x00CA, 0x1EC0 },
 143     { 0x00D4, 0x1ED2 },
 144   /*{ 0x00DC, 0x01DB },*/
 145     { 0x00E2, 0x1EA7 },
 146     { 0x00EA, 0x1EC1 },
 147     { 0x00F4, 0x1ED3 },
 148   /*{ 0x00FC, 0x01DC },*/
 149     { 0x0102, 0x1EB0 },
 150     { 0x0103, 0x1EB1 },
 151   /*{ 0x0112, 0x1E14 },*/
 152   /*{ 0x0113, 0x1E15 },*/
 153   /*{ 0x014C, 0x1E50 },*/
 154   /*{ 0x014D, 0x1E51 },*/
 155     { 0x01A0, 0x1EDC },
 156     { 0x01A1, 0x1EDD },
 157     { 0x01AF, 0x1EEA },
 158     { 0x01B0, 0x1EEB },
 159 #define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300)
 160 #define COMP_TABLE_LEN_0301 50
 161     { 0x0041, 0x00C1 },
 162     { 0x0043, 0x0106 },
 163     { 0x0045, 0x00C9 },
 164     { 0x0047, 0x01F4 },
 165     { 0x0049, 0x00CD },
 166     { 0x004B, 0x1E30 },
 167     { 0x004C, 0x0139 },
 168     { 0x004D, 0x1E3E },
 169     { 0x004E, 0x0143 },
 170     { 0x004F, 0x00D3 },
 171     { 0x0050, 0x1E54 },
 172     { 0x0052, 0x0154 },
 173     { 0x0053, 0x015A },
 174     { 0x0055, 0x00DA },
 175     { 0x0057, 0x1E82 },
 176     { 0x0059, 0x00DD },
 177     { 0x005A, 0x0179 },
 178     { 0x0061, 0x00E1 },
 179     { 0x0063, 0x0107 },
 180     { 0x0065, 0x00E9 },
 181     { 0x0067, 0x01F5 },
 182     { 0x0069, 0x00ED },
 183     { 0x006B, 0x1E31 },
 184     { 0x006C, 0x013A },
 185     { 0x006D, 0x1E3F },
 186     { 0x006E, 0x0144 },
 187     { 0x006F, 0x00F3 },
 188     { 0x0070, 0x1E55 },
 189     { 0x0072, 0x0155 },
 190     { 0x0073, 0x015B },
 191     { 0x0075, 0x00FA },
 192     { 0x0077, 0x1E83 },
 193     { 0x0079, 0x00FD },
 194     { 0x007A, 0x017A },
 195   /*{ 0x00A8, 0x0385 },*//* prefer U+0385 over U+1FEE */
 196     { 0x00C2, 0x1EA4 },
 197   /*{ 0x00C5, 0x01FA },*/
 198   /*{ 0x00C6, 0x01FC },*/
 199   /*{ 0x00C7, 0x1E08 },*/
 200     { 0x00CA, 0x1EBE },
 201   /*{ 0x00CF, 0x1E2E },*/
 202     { 0x00D4, 0x1ED0 },
 203     { 0x00D5, 0x1E4C },
 204   /*{ 0x00D8, 0x01FE },*/
 205   /*{ 0x00DC, 0x01D7 },*/
 206     { 0x00E2, 0x1EA5 },
 207   /*{ 0x00E5, 0x01FB },*/
 208   /*{ 0x00E6, 0x01FD },*/
 209   /*{ 0x00E7, 0x1E09 },*/
 210     { 0x00EA, 0x1EBF },
 211   /*{ 0x00EF, 0x1E2F },*/
 212     { 0x00F4, 0x1ED1 },
 213     { 0x00F5, 0x1E4D },
 214   /*{ 0x00F8, 0x01FF },*/
 215   /*{ 0x00FC, 0x01D8 },*/
 216     { 0x0102, 0x1EAE },
 217     { 0x0103, 0x1EAF },
 218   /*{ 0x0112, 0x1E16 },*/
 219   /*{ 0x0113, 0x1E17 },*/
 220   /*{ 0x014C, 0x1E52 },*/
 221   /*{ 0x014D, 0x1E53 },*/
 222     { 0x0168, 0x1E78 },
 223     { 0x0169, 0x1E79 },
 224     { 0x01A0, 0x1EDA },
 225     { 0x01A1, 0x1EDB },
 226     { 0x01AF, 0x1EE8 },
 227     { 0x01B0, 0x1EE9 },
 228 #define COMP_TABLE_IDX_0303 (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301)
 229 #define COMP_TABLE_LEN_0303 34
 230     { 0x0041, 0x00C3 },
 231     { 0x0045, 0x1EBC },
 232     { 0x0049, 0x0128 },
 233     { 0x004E, 0x00D1 },
 234     { 0x004F, 0x00D5 },
 235     { 0x0055, 0x0168 },
 236     { 0x0056, 0x1E7C },
 237     { 0x0059, 0x1EF8 },
 238     { 0x0061, 0x00E3 },
 239     { 0x0065, 0x1EBD },
 240     { 0x0069, 0x0129 },
 241     { 0x006E, 0x00F1 },
 242     { 0x006F, 0x00F5 },
 243     { 0x0075, 0x0169 },
 244     { 0x0076, 0x1E7D },
 245     { 0x0079, 0x1EF9 },
 246     { 0x00C2, 0x1EAA },
 247     { 0x00CA, 0x1EC4 },
 248     { 0x00D3, 0x1E4C },
 249     { 0x00D4, 0x1ED6 },
 250     { 0x00D6, 0x1E4E },
 251     { 0x00DA, 0x1E78 },
 252     { 0x00E2, 0x1EAB },
 253     { 0x00EA, 0x1EC5 },
 254     { 0x00F3, 0x1E4D },
 255     { 0x00F4, 0x1ED7 },
 256     { 0x00F6, 0x1E4F },
 257     { 0x00FA, 0x1E79 },
 258     { 0x0102, 0x1EB4 },
 259     { 0x0103, 0x1EB5 },
 260     { 0x01A0, 0x1EE0 },
 261     { 0x01A1, 0x1EE1 },
 262     { 0x01AF, 0x1EEE },
 263     { 0x01B0, 0x1EEF },
 264 #define COMP_TABLE_IDX_0309 (COMP_TABLE_IDX_0303 + COMP_TABLE_LEN_0303)
 265 #define COMP_TABLE_LEN_0309 24
 266     { 0x0041, 0x1EA2 },
 267     { 0x0045, 0x1EBA },
 268     { 0x0049, 0x1EC8 },
 269     { 0x004F, 0x1ECE },
 270     { 0x0055, 0x1EE6 },
 271     { 0x0059, 0x1EF6 },
 272     { 0x0061, 0x1EA3 },
 273     { 0x0065, 0x1EBB },
 274     { 0x0069, 0x1EC9 },
 275     { 0x006F, 0x1ECF },
 276     { 0x0075, 0x1EE7 },
 277     { 0x0079, 0x1EF7 },
 278     { 0x00C2, 0x1EA8 },
 279     { 0x00CA, 0x1EC2 },
 280     { 0x00D4, 0x1ED4 },
 281     { 0x00E2, 0x1EA9 },
 282     { 0x00EA, 0x1EC3 },
 283     { 0x00F4, 0x1ED5 },
 284     { 0x0102, 0x1EB2 },
 285     { 0x0103, 0x1EB3 },
 286     { 0x01A0, 0x1EDE },
 287     { 0x01A1, 0x1EDF },
 288     { 0x01AF, 0x1EEC },
 289     { 0x01B0, 0x1EED },
 290 #define COMP_TABLE_IDX_0323 (COMP_TABLE_IDX_0309 + COMP_TABLE_LEN_0309)
 291 #define COMP_TABLE_LEN_0323 50
 292     { 0x0041, 0x1EA0 },
 293     { 0x0042, 0x1E04 },
 294     { 0x0044, 0x1E0C },
 295     { 0x0045, 0x1EB8 },
 296     { 0x0048, 0x1E24 },
 297     { 0x0049, 0x1ECA },
 298     { 0x004B, 0x1E32 },
 299     { 0x004C, 0x1E36 },
 300     { 0x004D, 0x1E42 },
 301     { 0x004E, 0x1E46 },
 302     { 0x004F, 0x1ECC },
 303     { 0x0052, 0x1E5A },
 304     { 0x0053, 0x1E62 },
 305     { 0x0054, 0x1E6C },
 306     { 0x0055, 0x1EE4 },
 307     { 0x0056, 0x1E7E },
 308     { 0x0057, 0x1E88 },
 309     { 0x0059, 0x1EF4 },
 310     { 0x005A, 0x1E92 },
 311     { 0x0061, 0x1EA1 },
 312     { 0x0062, 0x1E05 },
 313     { 0x0064, 0x1E0D },
 314     { 0x0065, 0x1EB9 },
 315     { 0x0068, 0x1E25 },
 316     { 0x0069, 0x1ECB },
 317     { 0x006B, 0x1E33 },
 318     { 0x006C, 0x1E37 },
 319     { 0x006D, 0x1E43 },
 320     { 0x006E, 0x1E47 },
 321     { 0x006F, 0x1ECD },
 322     { 0x0072, 0x1E5B },
 323     { 0x0073, 0x1E63 },
 324     { 0x0074, 0x1E6D },
 325     { 0x0075, 0x1EE5 },
 326     { 0x0076, 0x1E7F },
 327     { 0x0077, 0x1E89 },
 328     { 0x0079, 0x1EF5 },
 329     { 0x007A, 0x1E93 },
 330     { 0x00C2, 0x1EAC },
 331     { 0x00CA, 0x1EC6 },
 332     { 0x00D4, 0x1ED8 },
 333     { 0x00E2, 0x1EAD },
 334     { 0x00EA, 0x1EC7 },
 335     { 0x00F4, 0x1ED9 },
 336     { 0x0102, 0x1EB6 },
 337     { 0x0103, 0x1EB7 },
 338     { 0x01A0, 0x1EE2 },
 339     { 0x01A1, 0x1EE3 },
 340     { 0x01AF, 0x1EF0 },
 341     { 0x01B0, 0x1EF1 },
 342 #define COMP_TABLE_IDX_END (COMP_TABLE_IDX_0323 + COMP_TABLE_LEN_0323)
 343   };
 344 /* Compile-time verification of table size.  */
 345 typedef int verify1[(NELEMS (comp_table_data) == COMP_TABLE_IDX_END) - 1];
 346
 347 static const struct
 348 {
 349   unsigned int idx;
 350   unsigned int len;
 351 } comp_table[5] =
 352   {
 353     { COMP_TABLE_IDX_0300, COMP_TABLE_LEN_0300 },
 354     { COMP_TABLE_IDX_0301, COMP_TABLE_LEN_0301 },
 355     { COMP_TABLE_IDX_0303, COMP_TABLE_LEN_0303 },
 356     { COMP_TABLE_IDX_0309, COMP_TABLE_LEN_0309 },
 357     { COMP_TABLE_IDX_0323, COMP_TABLE_LEN_0323 },
 358   };
 359
 360
 361 /* First define the conversion function from TCVN5712-1 to UCS4.  */
 362 #define MIN_NEEDED_INPUT        FROM_LOOP_MIN_NEEDED_FROM
 363 #define MAX_NEEDED_INPUT        FROM_LOOP_MAX_NEEDED_FROM
 364 #define MIN_NEEDED_OUTPUT       FROM_LOOP_MIN_NEEDED_TO
 365 #define MAX_NEEDED_OUTPUT       FROM_LOOP_MAX_NEEDED_TO
 366 #define LOOPFCT                 FROM_LOOP
 367 #define BODY \
 368   {                                                                           \
 369     uint32_t ch = *inptr;                                                     \
 370     uint32_t last_ch;                                                         \
 371     int must_buffer_ch;                                                       \
 372                                                                               \
 373     if (ch < 0x18)                                                            \
 374       ch = map_from_tcvn_low[ch];                                             \
 375     else if (ch >= 0x80)                                                      \
 376       ch = map_from_tcvn_high[ch - 0x80];                                     \
 377                                                                               \
 378     /* Determine whether there is a buffered character pending.  */           \
 379     last_ch = *statep >> 3;                                                   \
 380                                                                               \
 381     /* We have to buffer ch if it is a possible match in comp_table_data.  */ \
 382     must_buffer_ch = (ch >= 0x0041 && ch <= 0x01b0);                          \
 383                                                                               \
 384     if (last_ch)                                                              \
 385       {                                                                       \
 386         if (ch >= 0x0300 && ch < 0x0340)                                      \
 387           {                                                                   \
 388             /* See whether last_ch and ch can be combined.  */                \
 389             unsigned int i;                                                   \
 390             unsigned int i1;                                                  \
 391             unsigned int i2;                                                  \
 392                                                                               \
 393             switch (ch)                                                       \
 394               {                                                               \
 395               case 0x0300:                                                    \
 396                 i = 0;                                                        \
 397                 break;                                                        \
 398               case 0x0301:                                                    \
 399                 i = 1;                                                        \
 400                 break;                                                        \
 401               case 0x0303:                                                    \
 402                 i = 2;                                                        \
 403                 break;                                                        \
 404               case 0x0309:                                                    \
 405                 i = 3;                                                        \
 406                 break;                                                        \
 407               case 0x0323:                                                    \
 408                 i = 4;                                                        \
 409                 break;                                                        \
 410               default:                                                        \
 411                 abort ();                                                     \
 412               }                                                               \
 413                                                                               \
 414             i1 = comp_table[i].idx;                                           \
 415             i2 = i1 + comp_table[i].len - 1;                                  \
 416                                                                               \
 417             if (last_ch >= comp_table_data[i1].base                           \
 418                 && last_ch <= comp_table_data[i2].base)                       \
 419               {                                                               \
 420                 for (;;)                                                      \
 421                   {                                                           \
 422                     i = (i1 + i2) >> 1;                                       \
 423                     if (last_ch == comp_table_data[i].base)                   \
 424                       break;                                                  \
 425                     if (last_ch < comp_table_data[i].base)                    \
 426                       {                                                       \
 427                         if (i1 == i)                                          \
 428                           goto not_combining;                                 \
 429                         i2 = i;                                               \
 430                       }                                                       \
 431                     else                                                      \
 432                       {                                                       \
 433                         if (i1 != i)                                          \
 434                           i1 = i;                                             \
 435                         else                                                  \
 436                           {                                                   \
 437                             i = i2;                                           \
 438                             if (last_ch == comp_table_data[i].base)           \
 439                               break;                                          \
 440                             goto not_combining;                               \
 441                           }                                                   \
 442                       }                                                       \
 443                   }                                                           \
 444                 last_ch = comp_table_data[i].composed;                        \
 445                 /* Output the combined character.  */                         \
 446                 put32 (outptr, last_ch);                                      \
 447                 outptr += 4;                                                  \
 448                 *statep = 0;                                                  \
 449                 ++inptr;                                                      \
 450                 continue;                                                     \
 451               }                                                               \
 452           }                                                                   \
 453                                                                               \
 454       not_combining:                                                          \
 455         /* Output the buffered character.  */                                 \
 456         put32 (outptr, last_ch);                                              \
 457         outptr += 4;                                                          \
 458         *statep = 0;                                                          \
 459                                                                               \
 460         /* If we don't have enough room to output ch as well, then deal       \
 461            with it in another round.  */                                      \
 462         if (!must_buffer_ch && __builtin_expect (outptr + 4 > outend, 0))     \
 463           continue;                                                           \
 464       }                                                                       \
 465                                                                               \
 466     if (must_buffer_ch)                                                       \
 467       *statep = ch << 3;                                                      \
 468     else                                                                      \
 469       {                                                                       \
 470         put32 (outptr, ch);                                                   \
 471         outptr += 4;                                                          \
 472       }                                                                       \
 473     ++inptr;                                                                  \
 474   }
 475 #define EXTRA_LOOP_DECLS        , int *statep
 476 #define ONEBYTE_BODY \
 477   {                                                                           \
 478     uint32_t ch;                                                              \
 479                                                                               \
 480     if (c < 0x18)                                                             \
 481       ch = map_from_tcvn_low[c];                                              \
 482     else if (c >= 0x80)                                                       \
 483       ch = map_from_tcvn_high[c - 0x80];                                      \
 484     else                                                                      \
 485       ch = c;                                                                 \
 486     if (ch >= 0x0041 && ch <= 0x01b0)                                         \
 487       return WEOF;                                                            \
 488     return ch;                                                                \
 489   }
 490 #include <iconv/loop.c>
 491
 492
 493 /* Next, define the conversion function from UCS4 to TCVN5712-1.  */
 494
 495 static const unsigned char from_ucs4[] =
 496   {
 497 #define FROM_IDX_00 0
 498     0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x07, /* 0x0001-0x0007 */
 499     0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x0008-0x000f */
 500     0x10,                                           /* 0x0010-0x0010 */
 501
 502 #define FROM_IDX_01 (FROM_IDX_00 + 16)
 503     0x80, 0x83, 0xa2, 0x82, 0x00, 0x00, 0x00, 0x00, /* 0x00c0-0x00c7 */
 504     0x87, 0x8a, 0xa3, 0x00, 0x8d, 0x90, 0x00, 0x00, /* 0x00c8-0x00cf */
 505     0x00, 0x00, 0x92, 0x95, 0xa4, 0x94, 0x00, 0x00, /* 0x00d0-0x00d7 */
 506     0x00, 0x9d, 0x01, 0x00, 0x00, 0x16, 0x00, 0x00, /* 0x00d8-0x00df */
 507     0xb5, 0xb8, 0xa9, 0xb7, 0x00, 0x00, 0x00, 0x00, /* 0x00e0-0x00e7 */
 508     0xcc, 0xd0, 0xaa, 0x00, 0xd7, 0xdd, 0x00, 0x00, /* 0x00e8-0x00ef */
 509     0x00, 0x00, 0xdf, 0xe3, 0xab, 0xe2, 0x00, 0x00, /* 0x00f0-0x00f7 */
 510     0x00, 0xef, 0xf3, 0x00, 0x00, 0xfd, 0x00, 0x00, /* 0x00f8-0x00ff */
 511     0x00, 0x00, 0xa1, 0xa8, 0x00, 0x00, 0x00, 0x00, /* 0x0100-0x0107 */
 512     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0108-0x010f */
 513     0xa7, 0xae, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0110-0x0117 */
 514     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0118-0x011f */
 515     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0120-0x0127 */
 516     0x8f, 0xdc,                                     /* 0x0128-0x0129 */
 517
 518 #define FROM_IDX_02 (FROM_IDX_01 + 106)
 519     0x9f, 0xf2,                                     /* 0x0168-0x0169 */
 520
 521 #define FROM_IDX_03 (FROM_IDX_02 + 2)
 522     0xa5, 0xac, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x01a0-0x01a7 */
 523     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa6, /* 0x01a8-0x01af */
 524     0xad,                                           /* 0x01b0-0x01b0 */
 525
 526 #define FROM_IDX_04 (FROM_IDX_03 + 17)
 527     0xb0, 0xb3, 0x00, 0xb2, 0x00, 0x00, 0x00, 0x00, /* 0x0300-0x0307 */
 528     0x00, 0xb1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0308-0x030f */
 529     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0310-0x0317 */
 530     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0318-0x031f */
 531     0x00, 0x00, 0x00, 0xb4,                         /* 0x0320-0x0323 */
 532
 533 #define FROM_IDX_05 (FROM_IDX_04 + 36)
 534     0x84, 0xb9, 0x81, 0xb6, 0xc4, 0xca, 0xc1, 0xc7, /* 0x1ea0-0x1ea7 */
 535     0xc2, 0xc8, 0xc3, 0xc9, 0x86, 0xcb, 0xc0, 0xbe, /* 0x1ea8-0x1eaf */
 536     0xaf, 0xbb, 0xba, 0xbc, 0xbf, 0xbd, 0x85, 0xc6, /* 0x1eb0-0x1eb7 */
 537     0x8b, 0xd1, 0x88, 0xce, 0x89, 0xcf, 0xda, 0xd5, /* 0x1eb8-0x1ebf */
 538     0xc5, 0xd2, 0xcd, 0xd3, 0xd9, 0xd4, 0x8c, 0xd6, /* 0x1ec0-0x1ec7 */
 539     0x8e, 0xd8, 0x91, 0xde, 0x96, 0xe4, 0x93, 0xe1, /* 0x1ec8-0x1ecf */
 540     0xff, 0xe8, 0xdb, 0xe5, 0xe0, 0xe6, 0xf0, 0xe7, /* 0x1ed0-0x1ed7 */
 541     0x97, 0xe9, 0x9b, 0xed, 0x98, 0xea, 0x99, 0xeb, /* 0x1ed8-0x1edf */
 542     0x9a, 0xec, 0x9c, 0xee, 0x02, 0xf4, 0x9e, 0xf1, /* 0x1ee0-0x1ee7 */
 543     0x11, 0xf8, 0x04, 0xf5, 0x05, 0xf6, 0x06, 0xf7, /* 0x1ee8-0x1eef */
 544     0x12, 0xf9, 0x13, 0xfa, 0x17, 0xfe, 0x14, 0xfb, /* 0x1ef0-0x1ef7 */
 545     0x15, 0xfc                                      /* 0x1ef8-0x1ef9 */
 546 #define FROM_IDX_END (FROM_IDX_05 + 90)
 547   };
 548 /* Compile-time verification of table size.  */
 549 typedef int verify2[(NELEMS (from_ucs4) == FROM_IDX_END) - 1];
 550
 551 /* Decomposition table for the relevant Unicode characters. */
 552 static const struct
 553 {
 554   uint16_t composed;
 555   uint32_t base:8;
 556   uint32_t comb1:8;
 557 } decomp_table[] =
 558   {
 559     { 0x00d1, 0x4e, 0xb2 },
 560     { 0x00f1, 0x6e, 0xb2 },
 561     { 0x0106, 0x43, 0xb3 },
 562     { 0x0107, 0x63, 0xb3 },
 563     { 0x0139, 0x4c, 0xb3 },
 564     { 0x013a, 0x6c, 0xb3 },
 565     { 0x0143, 0x4e, 0xb3 },
 566     { 0x0144, 0x6e, 0xb3 },
 567     { 0x0154, 0x52, 0xb3 },
 568     { 0x0155, 0x72, 0xb3 },
 569     { 0x015a, 0x53, 0xb3 },
 570     { 0x015b, 0x73, 0xb3 },
 571     { 0x0179, 0x5a, 0xb3 },
 572     { 0x017a, 0x7a, 0xb3 },
 573     { 0x01f4, 0x47, 0xb3 },
 574     { 0x01f5, 0x67, 0xb3 },
 575     { 0x01f8, 0x4e, 0xb0 },
 576     { 0x01f9, 0x6e, 0xb0 },
 577     { 0x1e04, 0x42, 0xb4 },
 578     { 0x1e05, 0x62, 0xb4 },
 579     { 0x1e0c, 0x44, 0xb4 },
 580     { 0x1e0d, 0x64, 0xb4 },
 581     { 0x1e24, 0x48, 0xb4 },
 582     { 0x1e25, 0x68, 0xb4 },
 583     { 0x1e30, 0x4b, 0xb3 },
 584     { 0x1e31, 0x6b, 0xb3 },
 585     { 0x1e32, 0x4b, 0xb4 },
 586     { 0x1e33, 0x6b, 0xb4 },
 587     { 0x1e36, 0x4c, 0xb4 },
 588     { 0x1e37, 0x6c, 0xb4 },
 589     { 0x1e3e, 0x4d, 0xb3 },
 590     { 0x1e3f, 0x6d, 0xb3 },
 591     { 0x1e42, 0x4d, 0xb4 },
 592     { 0x1e43, 0x6d, 0xb4 },
 593     { 0x1e46, 0x4e, 0xb4 },
 594     { 0x1e47, 0x6e, 0xb4 },
 595     { 0x1e54, 0x50, 0xb3 },
 596     { 0x1e55, 0x70, 0xb3 },
 597     { 0x1e5a, 0x52, 0xb4 },
 598     { 0x1e5b, 0x72, 0xb4 },
 599     { 0x1e62, 0x53, 0xb4 },
 600     { 0x1e63, 0x73, 0xb4 },
 601     { 0x1e6c, 0x54, 0xb4 },
 602     { 0x1e6d, 0x74, 0xb4 },
 603     { 0x1e7c, 0x56, 0xb2 },
 604     { 0x1e7d, 0x76, 0xb2 },
 605     { 0x1e7e, 0x56, 0xb4 },
 606     { 0x1e7f, 0x76, 0xb4 },
 607     { 0x1e80, 0x57, 0xb0 },
 608     { 0x1e81, 0x77, 0xb0 },
 609     { 0x1e82, 0x57, 0xb3 },
 610     { 0x1e83, 0x77, 0xb3 },
 611     { 0x1e88, 0x57, 0xb4 },
 612     { 0x1e89, 0x77, 0xb4 },
 613     { 0x1e92, 0x5a, 0xb4 },
 614     { 0x1e93, 0x7a, 0xb4 },
 615   };
 616
 617
 618 /* Next, define the other direction.  */
 619 #define MIN_NEEDED_INPUT        TO_LOOP_MIN_NEEDED_FROM
 620 #define MAX_NEEDED_INPUT        TO_LOOP_MAX_NEEDED_FROM
 621 #define MIN_NEEDED_OUTPUT       TO_LOOP_MIN_NEEDED_TO
 622 #define MAX_NEEDED_OUTPUT       TO_LOOP_MAX_NEEDED_TO
 623 #define LOOPFCT                 TO_LOOP
 624 #define BODY \
 625   {                                                                           \
 626     uint32_t ch = get32 (inptr);                                              \
 627                                                                               \
 628     if (ch == 0x00 || (ch >= 0x18 && ch < 0x80) || ch == 0xa0)                \
 629       {                                                                       \
 630         *outptr++ = ch;                                                       \
 631         inptr += 4;                                                           \
 632       }                                                                       \
 633     else                                                                      \
 634       {                                                                       \
 635         unsigned char res;                                                    \
 636                                                                               \
 637         if (ch <= 0x0010)                                                     \
 638           res = from_ucs4[ch - 0x0001 + FROM_IDX_00];                         \
 639         else if (ch >= 0x00c0 && ch <= 0x0129)                                \
 640           res = from_ucs4[ch - 0x00c0 + FROM_IDX_01];                         \
 641         else if (ch >= 0x0168 && ch <= 0x0169)                                \
 642           res = from_ucs4[ch - 0x0168 + FROM_IDX_02];                         \
 643         else if (ch >= 0x01a0 && ch <= 0x01b0)                                \
 644           res = from_ucs4[ch - 0x01a0 + FROM_IDX_03];                         \
 645         else if (ch >= 0x0300 && ch <= 0x0323)                                \
 646           res = from_ucs4[ch - 0x0300 + FROM_IDX_04];                         \
 647         else if (ch >= 0x1ea0 && ch <= 0x1ef9)                                \
 648           res = from_ucs4[ch - 0x1ea0 + FROM_IDX_05];                         \
 649         else                                                                  \
 650           {                                                                   \
 651             UNICODE_TAG_HANDLER (ch, 4);                                      \
 652             res = 0;                                                          \
 653           }                                                                   \
 654                                                                               \
 655         if (__builtin_expect (res != 0, 1))                                   \
 656           {                                                                   \
 657             *outptr++ = res;                                                  \
 658             inptr += 4;                                                       \
 659           }                                                                   \
 660         else                                                                  \
 661           {                                                                   \
 662             /* Try canonical decomposition.  */                               \
 663             unsigned int i1;                                                  \
 664             unsigned int i2;                                                  \
 665                                                                               \
 666             i1 = 0;                                                           \
 667             i2 = sizeof (decomp_table) / sizeof (decomp_table[0]) - 1;        \
 668             if (ch >= decomp_table[i1].composed                               \
 669                 && ch <= decomp_table[i2].composed)                           \
 670               {                                                               \
 671                 unsigned int i;                                               \
 672                                                                               \
 673                 for (;;)                                                      \
 674                   {                                                           \
 675                     i = (i1 + i2) >> 1;                                       \
 676                     if (ch == decomp_table[i].composed)                       \
 677                       break;                                                  \
 678                     if (ch < decomp_table[i].composed)                        \
 679                       {                                                       \
 680                         if (i1 == i)                                          \
 681                           goto failed;                                        \
 682                         i2 = i;                                               \
 683                       }                                                       \
 684                     else                                                      \
 685                       {                                                       \
 686                         if (i1 != i)                                          \
 687                           i1 = i;                                             \
 688                         else                                                  \
 689                           {                                                   \
 690                             i = i2;                                           \
 691                             if (ch == decomp_table[i].composed)               \
 692                               break;                                          \
 693                             goto failed;                                      \
 694                           }                                                   \
 695                       }                                                       \
 696                   }                                                           \
 697                                                                               \
 698                 /* See whether we have room for two bytes.  */                \
 699                 if (__builtin_expect (outptr + 1 >= outend, 0))               \
 700                   {                                                           \
 701                     result = __GCONV_FULL_OUTPUT;                             \
 702                     break;                                                    \
 703                   }                                                           \
 704                                                                               \
 705                 /* Found a canonical decomposition.  */                       \
 706                 *outptr++ = decomp_table[i].base;                             \
 707                 *outptr++ = decomp_table[i].comb1;                            \
 708                 inptr += 4;                                                   \
 709                 continue;                                                     \
 710               }                                                               \
 711                                                                               \
 712           failed:                                                             \
 713             /* This is an illegal character.  */                              \
 714             STANDARD_TO_LOOP_ERR_HANDLER (4);                                 \
 715           }                                                                   \
 716       }                                                                       \
 717   }
 718 #define LOOP_NEED_FLAGS
 719 #define EXTRA_LOOP_DECLS        , int *statep
 720 #include <iconv/loop.c>
 721
 722
 723 /* Now define the toplevel functions.  */
 724 #include <iconv/skeleton.c>