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00001 /*------------------------------------------------------------------------- 00002 * 00003 * BIG5 <--> UTF8 00004 * 00005 * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group 00006 * Portions Copyright (c) 1994, Regents of the University of California 00007 * 00008 * IDENTIFICATION 00009 * src/backend/utils/mb/conversion_procs/utf8_and_big5/utf8_and_big5.c 00010 * 00011 *------------------------------------------------------------------------- 00012 */ 00013 00014 #include "postgres.h" 00015 #include "fmgr.h" 00016 #include "mb/pg_wchar.h" 00017 #include "../../Unicode/big5_to_utf8.map" 00018 #include "../../Unicode/utf8_to_big5.map" 00019 00020 PG_MODULE_MAGIC; 00021 00022 PG_FUNCTION_INFO_V1(big5_to_utf8); 00023 PG_FUNCTION_INFO_V1(utf8_to_big5); 00024 00025 extern Datum big5_to_utf8(PG_FUNCTION_ARGS); 00026 extern Datum utf8_to_big5(PG_FUNCTION_ARGS); 00027 00028 /* ---------- 00029 * conv_proc( 00030 * INTEGER, -- source encoding id 00031 * INTEGER, -- destination encoding id 00032 * CSTRING, -- source string (null terminated C string) 00033 * CSTRING, -- destination string (null terminated C string) 00034 * INTEGER -- source string length 00035 * ) returns VOID; 00036 * ---------- 00037 */ 00038 Datum 00039 big5_to_utf8(PG_FUNCTION_ARGS) 00040 { 00041 unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2); 00042 unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3); 00043 int len = PG_GETARG_INT32(4); 00044 00045 CHECK_ENCODING_CONVERSION_ARGS(PG_BIG5, PG_UTF8); 00046 00047 LocalToUtf(src, dest, LUmapBIG5, NULL, 00048 sizeof(LUmapBIG5) / sizeof(pg_local_to_utf), 0, PG_BIG5, len); 00049 00050 PG_RETURN_VOID(); 00051 } 00052 00053 Datum 00054 utf8_to_big5(PG_FUNCTION_ARGS) 00055 { 00056 unsigned char *src = (unsigned char *) PG_GETARG_CSTRING(2); 00057 unsigned char *dest = (unsigned char *) PG_GETARG_CSTRING(3); 00058 int len = PG_GETARG_INT32(4); 00059 00060 CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_BIG5); 00061 00062 UtfToLocal(src, dest, ULmapBIG5, NULL, 00063 sizeof(ULmapBIG5) / sizeof(pg_utf_to_local), 0, PG_BIG5, len); 00064 00065 PG_RETURN_VOID(); 00066 }
1.7.1