granicus.if.org Git - postgresql/blob - src/backend/utils/mb/conversion_procs/utf8_and_cyrillic/utf8_and_cyrillic.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  *        UTF8 and Cyrillic
   4  *
   5  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * IDENTIFICATION
   9  *        $PostgreSQL: pgsql/src/backend/utils/mb/conversion_procs/utf8_and_cyrillic/utf8_and_cyrillic.c,v 1.13 2006/02/18 16:15:22 petere Exp $
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13
  14 #include "postgres.h"
  15 #include "fmgr.h"
  16 #include "mb/pg_wchar.h"
  17 #include "../../Unicode/utf8_to_koi8r.map"
  18 #include "../../Unicode/koi8r_to_utf8.map"
  19
  20 PG_FUNCTION_INFO_V1(utf8_to_koi8r);
  21 PG_FUNCTION_INFO_V1(koi8r_to_utf8);
  22
  23 extern Datum utf8_to_koi8r(PG_FUNCTION_ARGS);
  24 extern Datum koi8r_to_utf8(PG_FUNCTION_ARGS);
  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  * ) returns VOID;
  34  * ----------
  35  */
  36
  37 Datum
  38 utf8_to_koi8r(PG_FUNCTION_ARGS)
  39 {
  40         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  41         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  42         int                     len = PG_GETARG_INT32(4);
  43
  44         Assert(PG_GETARG_INT32(0) == PG_UTF8);
  45         Assert(PG_GETARG_INT32(1) == PG_KOI8R);
  46         Assert(len >= 0);
  47
  48         UtfToLocal(src, dest, ULmapKOI8R,
  49                            sizeof(ULmapKOI8R) / sizeof(pg_utf_to_local), len);
  50
  51         PG_RETURN_VOID();
  52 }
  53
  54 Datum
  55 koi8r_to_utf8(PG_FUNCTION_ARGS)
  56 {
  57         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  58         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  59         int                     len = PG_GETARG_INT32(4);
  60
  61         Assert(PG_GETARG_INT32(0) == PG_KOI8R);
  62         Assert(PG_GETARG_INT32(1) == PG_UTF8);
  63         Assert(len >= 0);
  64
  65         LocalToUtf(src, dest, LUmapKOI8R,
  66                            sizeof(LUmapKOI8R) / sizeof(pg_local_to_utf), PG_KOI8R, len);
  67
  68         PG_RETURN_VOID();
  69 }
  70