Add comment for multi-byte computation.

bmomjian · bmomjian · commit 954108f92d54 · 2005-06-04T20:56:13.000Z
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
@@ -8,7 +8,7 @@
  *
  *
  * 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;
 
+							/* if multi-byte, take len and find # characters */
 							if (pg_database_encoding_max_length() > 1)
 								len = pg_mbstrlen_with_len(VARDATA(DatumGetPointer(con->constvalue)), len);
 							return len + VARHDRSZ;

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@`
`8`	`8`	`*`
`9`	`9`	`*`
`10`	`10`	`* IDENTIFICATION`
`11`		`- * $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.182 2005/05/24 15:45:34 ishii Exp $`
	`11`	`+ * $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.183 2005/06/04 20:56:13 momjian Exp $`
`12`	`12`	`*`
`13`	`13`	`*-------------------------------------------------------------------------`
`14`	`14`	`*/`
`@@ -1556,6 +1556,7 @@ exprTypmod(Node *expr)`
`1556`	`1556`	`{`
`1557`	`1557`	`int32 len = VARSIZE(DatumGetPointer(con->constvalue)) - VARHDRSZ;`
`1558`	`1558`
	`1559`	`+ /* if multi-byte, take len and find # characters */`
`1559`	`1560`	`if (pg_database_encoding_max_length() > 1)`
`1560`	`1561`	`len = pg_mbstrlen_with_len(VARDATA(DatumGetPointer(con->constvalue)), len);`
`1561`	`1562`	`return len + VARHDRSZ;`