1: /* Conversion from and to CP1258.
    2:    Copyright (C) 1998, 2001, 2002, 2004 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998,
    5:    and Bruno Haible <haible@clisp.cons.org>, 2001.
    6: 
    7:    The GNU C Library is free software; you can redistribute it and/or
    8:    modify it under the terms of the GNU Lesser General Public
    9:    License as published by the Free Software Foundation; either
   10:    version 2.1 of the License, or (at your option) any later version.
   11: 
   12:    The GNU C Library is distributed in the hope that it will be useful,
   13:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   15:    Lesser General Public License for more details.
   16: 
   17:    You should have received a copy of the GNU Lesser General Public
   18:    License along with the GNU C Library; if not, write to the Free
   19:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   20:    02111-1307 USA.  */
   21: 
   22: #include <dlfcn.h>
   23: #include <stdint.h>
   24: #include <assert.h>
   25: #include <stdlib.h>
   26: 
   27: #define NELEMS(arr) (sizeof (arr) / sizeof (arr[0]))
   28: 
   29: /* Definitions used in the body of the `gconv' function.  */
   30: #define CHARSET_NAME            "CP1258//"
   31: #define FROM_LOOP               from_cp1258
   32: #define TO_LOOP                 to_cp1258
   33: #define DEFINE_INIT             1
   34: #define DEFINE_FINI             1
   35: #define FROM_LOOP_MIN_NEEDED_FROM       1
   36: #define FROM_LOOP_MAX_NEEDED_FROM       1
   37: #define FROM_LOOP_MIN_NEEDED_TO         4
   38: #define FROM_LOOP_MAX_NEEDED_TO         4
   39: #define TO_LOOP_MIN_NEEDED_FROM         4
   40: #define TO_LOOP_MAX_NEEDED_FROM         4
   41: #define TO_LOOP_MIN_NEEDED_TO           1
   42: #define TO_LOOP_MAX_NEEDED_TO           2
   43: #define PREPARE_LOOP \
   44:   int saved_state;                                                            \
   45:   int *statep = &data->__statep->__count;
   46: #define EXTRA_LOOP_ARGS         , statep
   47: 
   48: 
   49: /* Since we might have to reset input pointer we must be able to save
   50:    and restore the state.  */
   51: #define SAVE_RESET_STATE(Save) \
   52:   if (Save)                                                                   \
   53:     saved_state = *statep;                                                    \
   54:   else                                                                        \
   55:     *statep = saved_state
   56: 
   57: 
   58: /* During CP1258 to UCS4 conversion, the COUNT element of the state
   59:    contains the last UCS4 character, shifted by 3 bits.  */
   60: 
   61: 
   62: /* Since this is a stateful encoding we have to provide code which resets
   63:    the output state to the initial state.  This has to be done during the
   64:    flushing.  */
   65: #define EMIT_SHIFT_TO_INIT \
   66:   if (data->__statep->__count != 0)                                           \
   67:     {                                                                         \
   68:       if (FROM_DIRECTION)                                                     \
   69:         {                                                                    \
   70:           if (__builtin_expect (outbuf + 4 <= outend, 1))                    \
   71:             {                                                                \
   72:               /* Write out the last character.  */                           \
   73:               *((uint32_t *) outbuf) = data->__statep->__count >> 3;         \
   74:               outbuf += sizeof (uint32_t);                                   \
   75:               data->__statep->__count = 0;                                   \
   76:             }                                                                \
   77:           else                                                               \
   78:             /* We don't have enough room in the output buffer.  */           \
   79:             status = __GCONV_FULL_OUTPUT;                                    \
   80:         }                                                                    \
   81:       else                                                                    \
   82:         /* We don't use shift states in the TO_DIRECTION.  */                \
   83:         data->__statep->__count = 0;                                         \
   84:     }
   85: 
   86: 
   87: /* First define the conversion function from CP1258 to UCS4.  */
   88: 
   89: static const uint16_t to_ucs4[128] =
   90:   {
   91:     /* 0x80 */
   92:     0x20AC,      0, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021,
   93:     0x02C6, 0x2030,      0, 0x2039, 0x0152,      0,      0,      0,
   94:     /* 0x90 */
   95:          0, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
   96:     0x02DC, 0x2122,      0, 0x203A, 0x0153,      0,      0, 0x0178,
   97:     /* 0xA0 */
   98:     0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x00A4, 0x00A5, 0x00A6, 0x00A7,
   99:     0x00A8, 0x00A9, 0x00AA, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00AF,
  100:     /* 0xB0 */
  101:     0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5, 0x00B6, 0x00B7,
  102:     0x00B8, 0x00B9, 0x00BA, 0x00BB, 0x00BC, 0x00BD, 0x00BE, 0x00BF,
  103:     /* 0xC0 */
  104:     0x00C0, 0x00C1, 0x00C2, 0x0102, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
  105:     0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x0300, 0x00CD, 0x00CE, 0x00CF,
  106:     /* 0xD0 */
  107:     0x0110, 0x00D1, 0x0309, 0x00D3, 0x00D4, 0x01A0, 0x00D6, 0x00D7,
  108:     0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x01AF, 0x0303, 0x00DF,
  109:     /* 0xE0 */
  110:     0x00E0, 0x00E1, 0x00E2, 0x0103, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
  111:     0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x0301, 0x00ED, 0x00EE, 0x00EF,
  112:     /* 0xF0 */
  113:     0x0111, 0x00F1, 0x0323, 0x00F3, 0x00F4, 0x01A1, 0x00F6, 0x00F7,
  114:     0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x01B0, 0x20AB, 0x00FF,
  115:   };
  116: 
  117: /* CP1258 contains five combining characters:
  118:    0x0300, 0x0301, 0x0303, 0x0309, 0x0323.  */
  119: 
  120: /* Composition tables for each of the relevant combining characters.  */
  121: static const struct
  122: {
  123:   uint16_t base;
  124:   uint16_t composed;
  125: } comp_table_data[] =
  126:   {
  127: #define COMP_TABLE_IDX_0300 0
  128: #define COMP_TABLE_LEN_0300 31
  129:     { 0x0041, 0x00C0 },
  130:     { 0x0045, 0x00C8 },
  131:     { 0x0049, 0x00CC },
  132:     { 0x004E, 0x01F8 },
  133:     { 0x004F, 0x00D2 },
  134:     { 0x0055, 0x00D9 },
  135:     { 0x0057, 0x1E80 },
  136:     { 0x0059, 0x1EF2 },
  137:     { 0x0061, 0x00E0 },
  138:     { 0x0065, 0x00E8 },
  139:     { 0x0069, 0x00EC },
  140:     { 0x006E, 0x01F9 },
  141:     { 0x006F, 0x00F2 },
  142:     { 0x0075, 0x00F9 },
  143:     { 0x0077, 0x1E81 },
  144:     { 0x0079, 0x1EF3 },
  145:     { 0x00A8, 0x1FED },
  146:     { 0x00C2, 0x1EA6 },
  147:     { 0x00CA, 0x1EC0 },
  148:     { 0x00D4, 0x1ED2 },
  149:     { 0x00DC, 0x01DB },
  150:     { 0x00E2, 0x1EA7 },
  151:     { 0x00EA, 0x1EC1 },
  152:     { 0x00F4, 0x1ED3 },
  153:     { 0x00FC, 0x01DC },
  154:     { 0x0102, 0x1EB0 },
  155:     { 0x0103, 0x1EB1 },
  156:     /*{ 0x0112, 0x1E14 },*/
  157:     /*{ 0x0113, 0x1E15 },*/
  158:     /*{ 0x014C, 0x1E50 },*/
  159:     /*{ 0x014D, 0x1E51 },*/
  160:     { 0x01A0, 0x1EDC },
  161:     { 0x01A1, 0x1EDD },
  162:     { 0x01AF, 0x1EEA },
  163:     { 0x01B0, 0x1EEB },
  164: #define COMP_TABLE_IDX_0301 (COMP_TABLE_IDX_0300 + COMP_TABLE_LEN_0300)
  165: #define COMP_TABLE_LEN_0301 60
  166:     { 0x0041, 0x00C1 },
  167:     { 0x0043, 0x0106 },
  168:     { 0x0045, 0x00C9 },
  169:     { 0x0047, 0x01F4 },
  170:     { 0x0049, 0x00CD },
  171:     { 0x004B, 0x1E30 },
  172:     { 0x004C, 0x0139 },
  173:     { 0x004D, 0x1E3E },
  174:     { 0x004E, 0x0143 },
  175:     { 0x004F, 0x00D3 },
  176:     { 0x0050, 0x1E54 },
  177:     { 0x0052, 0x0154 },
  178:     { 0x0053, 0x015A },
  179:     { 0x0055, 0x00DA },
  180:     { 0x0057, 0x1E82 },
  181:     { 0x0059, 0x00DD },
  182:     { 0x005A, 0x0179 },
  183:     { 0x0061, 0x00E1 },
  184:     { 0x0063, 0x0107 },
  185:     { 0x0065, 0x00E9 },
  186:     { 0x0067, 0x01F5 },
  187:     { 0x0069, 0x00ED },
  188:     { 0x006B, 0x1E31 },
  189:     { 0x006C, 0x013A },
  190:     { 0x006D, 0x1E3F },
  191:     { 0x006E, 0x0144 },
  192:     { 0x006F, 0x00F3 },
  193:     { 0x0070, 0x1E55 },
  194:     { 0x0072, 0x0155 },
  195:     { 0x0073, 0x015B },
  196:     { 0x0075, 0x00FA },
  197:     { 0x0077, 0x1E83 },
  198:     { 0x0079, 0x00FD },
  199:     { 0x007A, 0x017A },
  200:     { 0x00A5, 0x0385 },
  201:     { 0x00A8, 0x1FEE },
  202:     { 0x00C2, 0x1EA4 },
  203:     { 0x00C5, 0x01FA },
  204:     { 0x00C6, 0x01FC },
  205:     { 0x00C7, 0x1E08 },
  206:     { 0x00CA, 0x1EBE },
  207:     { 0x00CF, 0x1E2E },
  208:     { 0x00D4, 0x1ED0 },
  209:     /*{ 0x00D5, 0x1E4C },*/
  210:     { 0x00D8, 0x01FE },
  211:     { 0x00DC, 0x01D7 },
  212:     { 0x00E2, 0x1EA5 },
  213:     { 0x00E5, 0x01FB },
  214:     { 0x00E6, 0x01FD },
  215:     { 0x00E7, 0x1E09 },
  216:     { 0x00EA, 0x1EBF },
  217:     { 0x00EF, 0x1E2F },
  218:     { 0x00F4, 0x1ED1 },
  219:     /*{ 0x00F5, 0x1E4D },*/
  220:     { 0x00F8, 0x01FF },
  221:     { 0x00FC, 0x01D8 },
  222:     { 0x0102, 0x1EAE },
  223:     { 0x0103, 0x1EAF },
  224:     /*{ 0x0112, 0x1E16 },*/
  225:     /*{ 0x0113, 0x1E17 },*/
  226:     /*{ 0x014C, 0x1E52 },*/
  227:     /*{ 0x014D, 0x1E53 },*/
  228:     /*{ 0x0168, 0x1E78 },*/
  229:     /*{ 0x0169, 0x1E79 },*/
  230:     { 0x01A0, 0x1EDA },
  231:     { 0x01A1, 0x1EDB },
  232:     { 0x01AF, 0x1EE8 },
  233:     { 0x01B0, 0x1EE9 },
  234: #define COMP_TABLE_IDX_0303 (COMP_TABLE_IDX_0301 + COMP_TABLE_LEN_0301)
  235: #define COMP_TABLE_LEN_0303 34
  236:     { 0x0041, 0x00C3 },
  237:     { 0x0045, 0x1EBC },
  238:     { 0x0049, 0x0128 },
  239:     { 0x004E, 0x00D1 },
  240:     { 0x004F, 0x00D5 },
  241:     { 0x0055, 0x0168 },
  242:     { 0x0056, 0x1E7C },
  243:     { 0x0059, 0x1EF8 },
  244:     { 0x0061, 0x00E3 },
  245:     { 0x0065, 0x1EBD },
  246:     { 0x0069, 0x0129 },
  247:     { 0x006E, 0x00F1 },
  248:     { 0x006F, 0x00F5 },
  249:     { 0x0075, 0x0169 },
  250:     { 0x0076, 0x1E7D },
  251:     { 0x0079, 0x1EF9 },
  252:     { 0x00C2, 0x1EAA },
  253:     { 0x00CA, 0x1EC4 },
  254:     { 0x00D3, 0x1E4C },
  255:     { 0x00D4, 0x1ED6 },
  256:     { 0x00D6, 0x1E4E },
  257:     { 0x00DA, 0x1E78 },
  258:     { 0x00E2, 0x1EAB },
  259:     { 0x00EA, 0x1EC5 },
  260:     { 0x00F3, 0x1E4D },
  261:     { 0x00F4, 0x1ED7 },
  262:     { 0x00F6, 0x1E4F },
  263:     { 0x00FA, 0x1E79 },
  264:     { 0x0102, 0x1EB4 },
  265:     { 0x0103, 0x1EB5 },
  266:     { 0x01A0, 0x1EE0 },
  267:     { 0x01A1, 0x1EE1 },
  268:     { 0x01AF, 0x1EEE },
  269:     { 0x01B0, 0x1EEF },
  270: #define COMP_TABLE_IDX_0309 (COMP_TABLE_IDX_0303 + COMP_TABLE_LEN_0303)
  271: #define COMP_TABLE_LEN_0309 24
  272:     { 0x0041, 0x1EA2 },
  273:     { 0x0045, 0x1EBA },
  274:     { 0x0049, 0x1EC8 },
  275:     { 0x004F, 0x1ECE },
  276:     { 0x0055, 0x1EE6 },
  277:     { 0x0059, 0x1EF6 },
  278:     { 0x0061, 0x1EA3 },
  279:     { 0x0065, 0x1EBB },
  280:     { 0x0069, 0x1EC9 },
  281:     { 0x006F, 0x1ECF },
  282:     { 0x0075, 0x1EE7 },
  283:     { 0x0079, 0x1EF7 },
  284:     { 0x00C2, 0x1EA8 },
  285:     { 0x00CA, 0x1EC2 },
  286:     { 0x00D4, 0x1ED4 },
  287:     { 0x00E2, 0x1EA9 },
  288:     { 0x00EA, 0x1EC3 },
  289:     { 0x00F4, 0x1ED5 },
  290:     { 0x0102, 0x1EB2 },
  291:     { 0x0103, 0x1EB3 },
  292:     { 0x01A0, 0x1EDE },
  293:     { 0x01A1, 0x1EDF },
  294:     { 0x01AF, 0x1EEC },
  295:     { 0x01B0, 0x1EED },
  296: #define COMP_TABLE_IDX_0323 (COMP_TABLE_IDX_0309 + COMP_TABLE_LEN_0309)
  297: #define COMP_TABLE_LEN_0323 50
  298:     { 0x0041, 0x1EA0 },
  299:     { 0x0042, 0x1E04 },
  300:     { 0x0044, 0x1E0C },
  301:     { 0x0045, 0x1EB8 },
  302:     { 0x0048, 0x1E24 },
  303:     { 0x0049, 0x1ECA },
  304:     { 0x004B, 0x1E32 },
  305:     { 0x004C, 0x1E36 },
  306:     { 0x004D, 0x1E42 },
  307:     { 0x004E, 0x1E46 },
  308:     { 0x004F, 0x1ECC },
  309:     { 0x0052, 0x1E5A },
  310:     { 0x0053, 0x1E62 },
  311:     { 0x0054, 0x1E6C },
  312:     { 0x0055, 0x1EE4 },
  313:     { 0x0056, 0x1E7E },
  314:     { 0x0057, 0x1E88 },
  315:     { 0x0059, 0x1EF4 },
  316:     { 0x005A, 0x1E92 },
  317:     { 0x0061, 0x1EA1 },
  318:     { 0x0062, 0x1E05 },
  319:     { 0x0064, 0x1E0D },
  320:     { 0x0065, 0x1EB9 },
  321:     { 0x0068, 0x1E25 },
  322:     { 0x0069, 0x1ECB },
  323:     { 0x006B, 0x1E33 },
  324:     { 0x006C, 0x1E37 },
  325:     { 0x006D, 0x1E43 },
  326:     { 0x006E, 0x1E47 },
  327:     { 0x006F, 0x1ECD },
  328:     { 0x0072, 0x1E5B },
  329:     { 0x0073, 0x1E63 },
  330:     { 0x0074, 0x1E6D },
  331:     { 0x0075, 0x1EE5 },
  332:     { 0x0076, 0x1E7F },
  333:     { 0x0077, 0x1E89 },
  334:     { 0x0079, 0x1EF5 },
  335:     { 0x007A, 0x1E93 },
  336:     { 0x00C2, 0x1EAC },
  337:     { 0x00CA, 0x1EC6 },
  338:     { 0x00D4, 0x1ED8 },
  339:     { 0x00E2, 0x1EAD },
  340:     { 0x00EA, 0x1EC7 },
  341:     { 0x00F4, 0x1ED9 },
  342:     { 0x0102, 0x1EB6 },
  343:     { 0x0103, 0x1EB7 },
  344:     { 0x01A0, 0x1EE2 },
  345:     { 0x01A1, 0x1EE3 },
  346:     { 0x01AF, 0x1EF0 },
  347:     { 0x01B0, 0x1EF1 },
  348: #define COMP_TABLE_IDX_END (COMP_TABLE_IDX_0323 + COMP_TABLE_LEN_0323)
  349:   };
  350: /* Compile-time verification of table size.  */
  351: typedef int verify1[(NELEMS (comp_table_data) == COMP_TABLE_IDX_END) - 1];
  352: 
  353: static const struct
  354: {
  355:   unsigned int idx;
  356:   unsigned int len;
  357: } comp_table[5] =
  358:   {
  359:     { COMP_TABLE_IDX_0300, COMP_TABLE_LEN_0300 },
  360:     { COMP_TABLE_IDX_0301, COMP_TABLE_LEN_0301 },
  361:     { COMP_TABLE_IDX_0303, COMP_TABLE_LEN_0303 },
  362:     { COMP_TABLE_IDX_0309, COMP_TABLE_LEN_0309 },
  363:     { COMP_TABLE_IDX_0323, COMP_TABLE_LEN_0323 }
  364:   };
  365: 
  366: #define MIN_NEEDED_INPUT        FROM_LOOP_MIN_NEEDED_FROM
  367: #define MAX_NEEDED_INPUT        FROM_LOOP_MAX_NEEDED_FROM
  368: #define MIN_NEEDED_OUTPUT       FROM_LOOP_MIN_NEEDED_TO
  369: #define MAX_NEEDED_OUTPUT       FROM_LOOP_MAX_NEEDED_TO
  370: #define LOOPFCT                 FROM_LOOP
  371: #define BODY \
  372:   {                                                                           \
  373:     uint32_t ch = *inptr;                                                     \
  374:     uint32_t last_ch;                                                         \
  375:     int must_buffer_ch;                                                       \
  376:                                                                               \
  377:     if (ch >= 0x80)                                                           \
  378:       {                                                                       \
  379:         ch = to_ucs4[ch - 0x80];                                             \
  380:         if (__builtin_expect (ch == L'\0', 0))                               \
  381:           {                                                                  \
  382:             /* This is an illegal character.  */                             \
  383:             STANDARD_FROM_LOOP_ERR_HANDLER (1);                                      \
  384:           }                                                                  \
  385:       }                                                                       \
  386:                                                                               \
  387:     /* Determine whether there is a buffered character pending.  */           \
  388:     last_ch = *statep >> 3;                                                   \
  389:                                                                               \
  390:     /* We have to buffer ch if it is a possible match in comp_table_data.  */ \
  391:     must_buffer_ch = (ch >= 0x0041 && ch <= 0x01b0);                          \
  392:                                                                               \
  393:     if (last_ch)                                                              \
  394:       {                                                                       \
  395:         if (ch >= 0x0300 && ch < 0x0340)                                     \
  396:           {                                                                  \
  397:             /* See whether last_ch and ch can be combined.  */               \
  398:             unsigned int i, i1, i2;                                          \
  399:                                                                               \
  400:             switch (ch)                                                              \
  401:               {                                                                      \
  402:               case 0x0300:                                                   \
  403:                 i = 0;                                                              \
  404:                 break;                                                              \
  405:               case 0x0301:                                                   \
  406:                 i = 1;                                                              \
  407:                 break;                                                              \
  408:               case 0x0303:                                                   \
  409:                 i = 2;                                                              \
  410:                 break;                                                              \
  411:               case 0x0309:                                                   \
  412:                 i = 3;                                                              \
  413:                 break;                                                              \
  414:               case 0x0323:                                                   \
  415:                 i = 4;                                                              \
  416:                 break;                                                              \
  417:               default:                                                       \
  418:                 abort ();                                                   \
  419:               }                                                                      \
  420:                                                                               \
  421:             i1 = comp_table[i].idx;                                          \
  422:             i2 = i1 + comp_table[i].len - 1;                                 \
  423:                                                                               \
  424:             if (last_ch >= comp_table_data[i1].base                          \
  425:                 && last_ch <= comp_table_data[i2].base)                             \
  426:               {                                                                      \
  427:                 for (;;)                                                    \
  428:                   {                                                         \
  429:                     i = (i1 + i2) >> 1;                                             \
  430:                     if (last_ch == comp_table_data[i].base)                 \
  431:                       break;                                                \
  432:                     if (last_ch < comp_table_data[i].base)                  \
  433:                       {                                                             \
  434:                         if (i1 == i)                                       \
  435:                           goto not_combining;                                      \
  436:                         i2 = i;                                                    \
  437:                       }                                                             \
  438:                     else                                                    \
  439:                       {                                                             \
  440:                         if (i1 != i)                                       \
  441:                           i1 = i;                                          \
  442:                         else                                               \
  443:                           {                                                \
  444:                             i = i2;                                        \
  445:                             if (last_ch == comp_table_data[i].base)        \
  446:                               break;                                       \
  447:                             goto not_combining;                                    \
  448:                           }                                                \
  449:                       }                                                             \
  450:                   }                                                         \
  451:                 last_ch = comp_table_data[i].composed;                              \
  452:                 /* Output the combined character.  */                       \
  453:                 put32 (outptr, last_ch);                                    \
  454:                 outptr += 4;                                                \
  455:                 *statep = 0;                                                \
  456:                 ++inptr;                                                    \
  457:                 continue;                                                   \
  458:               }                                                                      \
  459:           }                                                                  \
  460:                                                                               \
  461:       not_combining:                                                          \
  462:         /* Output the buffered character.  */                                \
  463:         put32 (outptr, last_ch);                                             \
  464:         outptr += 4;                                                         \
  465:         *statep = 0;                                                         \
  466:                                                                               \
  467:         /* If we don't have enough room to output ch as well, then deal              \
  468:            with it in another round.  */                                     \
  469:         if (!must_buffer_ch && __builtin_expect (outptr + 4 > outend, 0))     \
  470:           continue;                                                          \
  471:       }                                                                       \
  472:                                                                               \
  473:     if (must_buffer_ch)                                                       \
  474:       *statep = ch << 3;                                                      \
  475:     else                                                                      \
  476:       {                                                                       \
  477:         put32 (outptr, ch);                                                  \
  478:         outptr += 4;                                                         \
  479:       }                                                                       \
  480:     ++inptr;                                                                  \
  481:   }
  482: #define LOOP_NEED_FLAGS
  483: #define EXTRA_LOOP_DECLS        , int *statep
  484: #define ONEBYTE_BODY \
  485:   {                                                                           \
  486:     uint32_t ch;                                                              \
  487:                                                                               \
  488:     if (c < 0x80)                                                             \
  489:       ch = c;                                                                 \
  490:     else                                                                      \
  491:       {                                                                       \
  492:         ch = to_ucs4[c - 0x80];                                                      \
  493:         if (ch == L'\0')                                                     \
  494:           return WEOF;                                                       \
  495:       }                                                                       \
  496:     if (ch >= 0x0041 && ch <= 0x01b0)                                         \
  497:       return WEOF;                                                            \
  498:     return ch;                                                                \
  499:   }
  500: #include <iconv/loop.c>
  501: 
  502: 
  503: /* Next, define the conversion function from UCS4 to CP1258.  */
  504: 
  505: static const unsigned char from_ucs4[] =
  506:   {
  507: #define FROM_IDX_00 0
  508:                             0xc4, 0xc5, 0xc6, 0xc7, /* 0x00c4-0x00c7 */
  509:     0xc8, 0xc9, 0xca, 0xcb, 0x00, 0xcd, 0xce, 0xcf, /* 0x00c8-0x00cf */
  510:     0x00, 0xd1, 0x00, 0xd3, 0xd4, 0x00, 0xd6, 0xd7, /* 0x00d0-0x00d7 */
  511:     0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0x00, 0x00, 0xdf, /* 0x00d8-0x00df */
  512:     0xe0, 0xe1, 0xe2, 0x00, 0xe4, 0xe5, 0xe6, 0xe7, /* 0x00e0-0x00e7 */
  513:     0xe8, 0xe9, 0xea, 0xeb, 0x00, 0xed, 0xee, 0xef, /* 0x00e8-0x00ef */
  514:     0x00, 0xf1, 0x00, 0xf3, 0xf4, 0x00, 0xf6, 0xf7, /* 0x00f0-0x00f7 */
  515:     0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0x00, 0x00, 0xff, /* 0x00f8-0x00ff */
  516:     0x00, 0x00, 0xc3, 0xe3, 0x00, 0x00, 0x00, 0x00, /* 0x0100-0x0107 */
  517:     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0108-0x010f */
  518:     0xd0, 0xf0,                                     /* 0x0110-0x0111 */
  519: #define FROM_IDX_01 (FROM_IDX_00 + 78)
  520:                 0x8c, 0x9c, 0x00, 0x00, 0x00, 0x00, /* 0x0152-0x0157 */
  521:     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0158-0x015f */
  522:     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0160-0x0167 */
  523:     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0168-0x016f */
  524:     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,