Line data    Source code

       1              : /*-------------------------------------------------------------------------
       2              :  *
       3              :  *    LATIN2 and WIN1250
       4              :  *
       5              :  * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
       6              :  * Portions Copyright (c) 1994, Regents of the University of California
       7              :  *
       8              :  * IDENTIFICATION
       9              :  *    src/backend/utils/mb/conversion_procs/latin2_and_win1250/latin2_and_win1250.c
      10              :  *
      11              :  *-------------------------------------------------------------------------
      12              :  */
      13              : 
      14              : #include "postgres.h"
      15              : #include "fmgr.h"
      16              : #include "mb/pg_wchar.h"
      17              : 
      18            4 : PG_MODULE_MAGIC_EXT(
      19              :                     .name = "latin2_and_win1250",
      20              :                     .version = PG_VERSION
      21              : );
      22              : 
      23            4 : PG_FUNCTION_INFO_V1(latin2_to_win1250);
      24            4 : PG_FUNCTION_INFO_V1(win1250_to_latin2);
      25              : 
      26              : /* ----------
      27              :  * conv_proc(
      28              :  *      INTEGER,    -- source encoding id
      29              :  *      INTEGER,    -- destination encoding id
      30              :  *      CSTRING,    -- source string (null terminated C string)
      31              :  *      CSTRING,    -- destination string (null terminated C string)
      32              :  *      INTEGER,    -- source string length
      33              :  *      BOOL        -- if true, don't throw an error if conversion fails
      34              :  * ) returns INTEGER;
      35              :  *
      36              :  * Returns the number of bytes successfully converted.
      37              :  * ----------
      38              :  */
      39              : 
      40              : /* WIN1250 to ISO-8859-2 */
      41              : static const unsigned char win1250_2_iso88592[] = {
      42              :     0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
      43              :     0x88, 0x89, 0xA9, 0x8B, 0xA6, 0xAB, 0xAE, 0xAC,
      44              :     0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
      45              :     0x98, 0x99, 0xB9, 0x9B, 0xB6, 0xBB, 0xBE, 0xBC,
      46              :     0xA0, 0xB7, 0xA2, 0xA3, 0xA4, 0xA1, 0x00, 0xA7,
      47              :     0xA8, 0x00, 0xAA, 0x00, 0x00, 0xAD, 0x00, 0xAF,
      48              :     0xB0, 0x00, 0xB2, 0xB3, 0xB4, 0x00, 0x00, 0x00,
      49              :     0xB8, 0xB1, 0xBA, 0x00, 0xA5, 0xBD, 0xB5, 0xBF,
      50              :     0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
      51              :     0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
      52              :     0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
      53              :     0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
      54              :     0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
      55              :     0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
      56              :     0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
      57              :     0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
      58              : };
      59              : 
      60              : /* ISO-8859-2 to WIN1250 */
      61              : static const unsigned char iso88592_2_win1250[] = {
      62              :     0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
      63              :     0x88, 0x89, 0x00, 0x8B, 0x00, 0x00, 0x00, 0x00,
      64              :     0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
      65              :     0x98, 0x99, 0x00, 0x9B, 0x00, 0x00, 0x00, 0x00,
      66              :     0xA0, 0xA5, 0xA2, 0xA3, 0xA4, 0xBC, 0x8C, 0xA7,
      67              :     0xA8, 0x8A, 0xAA, 0x8D, 0x8F, 0xAD, 0x8E, 0xAF,
      68              :     0xB0, 0xB9, 0xB2, 0xB3, 0xB4, 0xBE, 0x9C, 0xA1,
      69              :     0xB8, 0x9A, 0xBA, 0x9D, 0x9F, 0xBD, 0x9E, 0xBF,
      70              :     0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
      71              :     0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
      72              :     0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
      73              :     0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
      74              :     0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
      75              :     0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
      76              :     0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
      77              :     0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
      78              : };
      79              : 
      80              : 
      81              : Datum
      82            4 : latin2_to_win1250(PG_FUNCTION_ARGS)
      83              : {
      84            4 :     unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
      85            4 :     unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
      86            4 :     int         len = PG_GETARG_INT32(4);
      87            4 :     bool        noError = PG_GETARG_BOOL(5);
      88              :     int         converted;
      89              : 
      90            4 :     CHECK_ENCODING_CONVERSION_ARGS(PG_LATIN2, PG_WIN1250);
      91              : 
      92            4 :     converted = local2local(src, dest, len, PG_LATIN2, PG_WIN1250,
      93              :                             iso88592_2_win1250, noError);
      94              : 
      95            4 :     PG_RETURN_INT32(converted);
      96              : }
      97              : 
      98              : Datum
      99            4 : win1250_to_latin2(PG_FUNCTION_ARGS)
     100              : {
     101            4 :     unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
     102            4 :     unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
     103            4 :     int         len = PG_GETARG_INT32(4);
     104            4 :     bool        noError = PG_GETARG_BOOL(5);
     105              :     int         converted;
     106              : 
     107            4 :     CHECK_ENCODING_CONVERSION_ARGS(PG_WIN1250, PG_LATIN2);
     108              : 
     109            4 :     converted = local2local(src, dest, len, PG_WIN1250, PG_LATIN2,
     110              :                             win1250_2_iso88592, noError);
     111              : 
     112            4 :     PG_RETURN_INT32(converted);
     113              : }