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Support for conversion between UNICODE and other encodings

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currently ISO8859-[1-5] and EUC_JP are supported.
support for other encodings will be coming soon.
This commit is contained in:
Tatsuo Ishii
2000-10-12 06:06:50 +00:00
parent 6619ad11ff
commit de53ce8131
14 changed files with 27865 additions and 438 deletions
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49
src/backend/utils/mb/mbutils.c
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@ -3,7 +3,7 @@
* client encoding and server internal encoding.
* (currently mule internal code (mic) is used)
* Tatsuo Ishii
* $Id: mbutils.c,v 1.11 2000/08/27 10:40:48 ishii Exp $ */
* $Id: mbutils.c,v 1.12 2000/10/12 06:06:50 ishii Exp $ */
#include "postgres.h"
@ -21,8 +21,8 @@ static void (*server_from_mic) (); /* MIC to something */
/*
* find encoding table entry by encoding
*/
static pg_encoding_conv_tbl *
get_enc_ent(int encoding)
pg_encoding_conv_tbl *
pg_get_enc_ent(int encoding)
{
pg_encoding_conv_tbl *p = pg_conv_tbl;
@ -35,8 +35,8 @@ get_enc_ent(int encoding)
}
/*
* set the client encoding. if client/server encoding is
* not supported, returns -1
* set the client encoding. if encoding conversion between
* client/server encoding is not supported, returns -1
*/
int
pg_set_client_encoding(int encoding)
@ -52,8 +52,8 @@ pg_set_client_encoding(int encoding)
}
else if (current_server_encoding == MULE_INTERNAL)
{ /* server == MULE_INETRNAL? */
client_to_mic = get_enc_ent(encoding)->to_mic;
client_from_mic = get_enc_ent(encoding)->from_mic;
client_to_mic = pg_get_enc_ent(encoding)->to_mic;
client_from_mic = pg_get_enc_ent(encoding)->from_mic;
server_to_mic = server_from_mic = 0;
if (client_to_mic == 0 || client_from_mic == 0)
return (-1);
@ -61,17 +61,33 @@ pg_set_client_encoding(int encoding)
else if (encoding == MULE_INTERNAL)
{ /* client == MULE_INETRNAL? */
client_to_mic = client_from_mic = 0;
server_to_mic = get_enc_ent(current_server_encoding)->to_mic;
server_from_mic = get_enc_ent(current_server_encoding)->from_mic;
server_to_mic = pg_get_enc_ent(current_server_encoding)->to_mic;
server_from_mic = pg_get_enc_ent(current_server_encoding)->from_mic;
if (server_to_mic == 0 || server_from_mic == 0)
return (-1);
}
else if (current_server_encoding == UNICODE)
{ /* server == UNICODE? */
client_to_mic = pg_get_enc_ent(encoding)->to_unicode;
client_from_mic = pg_get_enc_ent(encoding)->from_unicode;
server_to_mic = server_from_mic = 0;
if (client_to_mic == 0 || client_from_mic == 0)
return (-1);
}
else if (encoding == UNICODE)
{ /* client == UNICODE? */
client_to_mic = client_from_mic = 0;
server_to_mic = pg_get_enc_ent(current_server_encoding)->to_unicode;
server_from_mic = pg_get_enc_ent(current_server_encoding)->from_unicode;
if (server_to_mic == 0 || server_from_mic == 0)
return (-1);
}
else
{
client_to_mic = get_enc_ent(encoding)->to_mic;
client_from_mic = get_enc_ent(encoding)->from_mic;
server_to_mic = get_enc_ent(current_server_encoding)->to_mic;
server_from_mic = get_enc_ent(current_server_encoding)->from_mic;
client_to_mic = pg_get_enc_ent(encoding)->to_mic;
client_from_mic = pg_get_enc_ent(encoding)->from_mic;
server_to_mic = pg_get_enc_ent(current_server_encoding)->to_mic;
server_from_mic = pg_get_enc_ent(current_server_encoding)->from_mic;
if (client_to_mic == 0 || client_from_mic == 0)
return (-1);
if (server_to_mic == 0 || server_from_mic == 0)
@ -193,6 +209,13 @@ pg_mblen(const unsigned char *mbstr)
return ((*pg_wchar_table[GetDatabaseEncoding()].mblen) (mbstr));
}
/* returns the byte length of a multi-byte word with specified enciding */
int
pg_mblen_with_encoding(const unsigned char *mbstr, int encoding)
{
return ((*pg_wchar_table[encoding].mblen) (mbstr));
}
/* returns the length (counted as a wchar) of a multi-byte string */
int
pg_mbstrlen(const unsigned char *mbstr)