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) 1996-2010, 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/utf8_and_cyrillic/utf8_and_cyrillic.c
  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 #include "../../Unicode/utf8_to_koi8u.map"
  20 #include "../../Unicode/koi8u_to_utf8.map"
  21
  22 PG_MODULE_MAGIC;
  23
  24 PG_FUNCTION_INFO_V1(utf8_to_koi8r);
  25 PG_FUNCTION_INFO_V1(koi8r_to_utf8);
  26
  27 PG_FUNCTION_INFO_V1(utf8_to_koi8u);
  28 PG_FUNCTION_INFO_V1(koi8u_to_utf8);
  29
  30 extern Datum utf8_to_koi8r(PG_FUNCTION_ARGS);
  31 extern Datum koi8r_to_utf8(PG_FUNCTION_ARGS);
  32
  33 extern Datum utf8_to_koi8u(PG_FUNCTION_ARGS);
  34 extern Datum koi8u_to_utf8(PG_FUNCTION_ARGS);
  35
  36 /* ----------
  37  * conv_proc(
  38  *              INTEGER,        -- source encoding id
  39  *              INTEGER,        -- destination encoding id
  40  *              CSTRING,        -- source string (null terminated C string)
  41  *              CSTRING,        -- destination string (null terminated C string)
  42  *              INTEGER         -- source string length
  43  * ) returns VOID;
  44  * ----------
  45  */
  46
  47 Datum
  48 utf8_to_koi8r(PG_FUNCTION_ARGS)
  49 {
  50         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  51         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  52         int                     len = PG_GETARG_INT32(4);
  53
  54         CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_KOI8R);
  55
  56         UtfToLocal(src, dest, ULmapKOI8R, NULL,
  57                          sizeof(ULmapKOI8R) / sizeof(pg_utf_to_local), 0, PG_KOI8R, len);
  58
  59         PG_RETURN_VOID();
  60 }
  61
  62 Datum
  63 koi8r_to_utf8(PG_FUNCTION_ARGS)
  64 {
  65         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  66         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  67         int                     len = PG_GETARG_INT32(4);
  68
  69         CHECK_ENCODING_CONVERSION_ARGS(PG_KOI8R, PG_UTF8);
  70
  71         LocalToUtf(src, dest, LUmapKOI8R, NULL,
  72                          sizeof(LUmapKOI8R) / sizeof(pg_local_to_utf), 0, PG_KOI8R, len);
  73
  74         PG_RETURN_VOID();
  75 }
  76
  77 Datum
  78 utf8_to_koi8u(PG_FUNCTION_ARGS)
  79 {
  80         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  81         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  82         int                     len = PG_GETARG_INT32(4);
  83
  84         CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_KOI8U);
  85
  86         UtfToLocal(src, dest, ULmapKOI8U, NULL,
  87                          sizeof(ULmapKOI8U) / sizeof(pg_utf_to_local), 0, PG_KOI8U, len);
  88
  89         PG_RETURN_VOID();
  90 }
  91
  92 Datum
  93 koi8u_to_utf8(PG_FUNCTION_ARGS)
  94 {
  95         unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2);
  96         unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3);
  97         int                     len = PG_GETARG_INT32(4);
  98
  99         CHECK_ENCODING_CONVERSION_ARGS(PG_KOI8U, PG_UTF8);
 100
 101         LocalToUtf(src, dest, LUmapKOI8U, NULL,
 102                          sizeof(LUmapKOI8U) / sizeof(pg_local_to_utf), 0, PG_KOI8U, len);
 103
 104         PG_RETURN_VOID();
 105 }