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Add comment for multi-byte computation.

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This commit is contained in:
Bruce Momjian 2005-06-04 20:56:13 +00:00
parent 72c53ac3a7
commit 954108f92d
1 changed files with 2 additions and 1 deletions
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3
src/backend/parser/parse_expr.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.182 2005/05/24 15:45:34 ishii Exp $ * $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.183 2005/06/04 20:56:13 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -1556,6 +1556,7 @@ exprTypmod(Node *expr)
{ {
int32 len = VARSIZE(DatumGetPointer(con->constvalue)) - VARHDRSZ; int32 len = VARSIZE(DatumGetPointer(con->constvalue)) - VARHDRSZ;
/* if multi-byte, take len and find # characters */
if (pg_database_encoding_max_length() > 1) if (pg_database_encoding_max_length() > 1)
len = pg_mbstrlen_with_len(VARDATA(DatumGetPointer(con->constvalue)), len); len = pg_mbstrlen_with_len(VARDATA(DatumGetPointer(con->constvalue)), len);
return len + VARHDRSZ; return len + VARHDRSZ;