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TODO item:

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* Make n of CHAR(n)/VARCHAR(n) the number of letters, not bytes
This commit is contained in:
Tatsuo Ishii
2001-07-15 11:07:37 +00:00
parent b08e86d557
commit 1032445e5d
3 changed files with 106 additions and 50 deletions
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32
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 1.17 2001/04/16 02:42:01 tgl Exp $
* $Id: mbutils.c,v 1.18 2001/07/15 11:07:36 ishii Exp $
*/
#include "postgres.h"
@ -241,9 +241,9 @@ pg_mbstrlen_with_len(const unsigned char *mbstr, int limit)
}
/*
* returns the length of a multi-byte string
* returns the byte length of a multi-byte string
* (not necessarily NULL terminated)
* that is not longer than limit.
* that is no longer than limit.
* this function does not break multi-byte word boundary.
*/
int
@ -267,8 +267,30 @@ pg_mbcliplen(const unsigned char *mbstr, int len, int limit)
}
/*
* functions for utils/init
*/
* Similar to pg_mbcliplen but the limit parameter specifies the
* character length, not the byte length. */
int
pg_mbcharcliplen(const unsigned char *mbstr, int len, int limit)
{
int clen = 0;
int nch = 0;
int l;
while (len > 0 && *mbstr)
{
l = pg_mblen(mbstr);
nch++;
if (nch > limit)
break;
clen += l;
len -= l;
mbstr += l;
}
return (clen);
}
/*
* functions for utils/init */
static int DatabaseEncoding = MULTIBYTE;
void