src/backend/utils/mb/conversion_procs/utf8_and_sjis/utf8_and_sjis.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  *        SJIS <--> UTF-8
   4  *
   5  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * IDENTIFICATION
   9  *        $Header: /cvsroot/pgsql/src/backend/utils/mb/conversion_procs/utf8_and_sjis/utf8_and_sjis.c,v 1.2 2002/08/22 00:01:45 tgl Exp $
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13
  14 #include "postgres.h"
  15 #include "fmgr.h"
  16 #include "mb/pg_wchar.h"
  17 #include "../../Unicode/sjis_to_utf8.map"
  18 #include "../../Unicode/utf8_to_sjis.map"
  19
  20 PG_FUNCTION_INFO_V1(sjis_to_utf8)
  21 PG_FUNCTION_INFO_V1(utf8_to_sjis)
  22
  23 extern Datum sjis_to_utf8(PG_FUNCTION_ARGS);
  24 extern Datum utf8_to_sjis(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 Datum
  37 sjis_to_utf8(PG_FUNCTION_ARGS)
  38 {
  39         unsigned char *src = PG_GETARG_CSTRING(2);
  40         unsigned char *dest = PG_GETARG_CSTRING(3);
  41         int len = PG_GETARG_INT32(4);
  42
  43         Assert(PG_GETARG_INT32(0) == PG_SJIS);
  44         Assert(PG_GETARG_INT32(1) == PG_UTF8);
  45         Assert(len > 0);
  46
  47         LocalToUtf(src, dest, LUmapSJIS,
  48                            sizeof(LUmapSJIS) / sizeof(pg_local_to_utf), PG_SJIS, len);
  49
  50         PG_RETURN_INT32(0);
  51 }
  52
  53 Datum
  54 utf8_to_sjis(PG_FUNCTION_ARGS)
  55 {
  56         unsigned char *src = PG_GETARG_CSTRING(2);
  57         unsigned char *dest = PG_GETARG_CSTRING(3);
  58         int len = PG_GETARG_INT32(4);
  59
  60         Assert(PG_GETARG_INT32(0) == PG_UTF8);
  61         Assert(PG_GETARG_INT32(1) == PG_SJIS);
  62         Assert(len > 0);
  63
  64         UtfToLocal(src, dest, ULmapSJIS,
  65                            sizeof(ULmapSJIS) / sizeof(pg_utf_to_local), len);
  66
  67         PG_RETURN_INT32(0);
  68 }