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The cstring datatype can now be copied, passed around, etc. The typlen

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value '-2' is used to indicate a variable-width type whose width is
computed as strlen(datum)+1.  Everything that looks at typlen is updated
except for array support, which Joe Conway is working on; at the moment
it wouldn't work to try to create an array of cstring.
This commit is contained in:
Tom Lane
2002-08-24 15:00:47 +00:00
parent cf4d885c67
commit 976246cc7e
23 changed files with 260 additions and 198 deletions
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10
src/backend/access/common/printtup.c
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@@ -9,7 +9,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/common/printtup.c,v 1.63 2002/08/22 00:01:41 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/access/common/printtup.c,v 1.64 2002/08/24 15:00:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -457,9 +457,15 @@ printtup_internal(HeapTuple tuple, TupleDesc typeinfo, DestReceiver *self)
}
else
{
/* fixed size */
/* fixed size or cstring */
attr = origattr;
len = typeinfo->attrs[i]->attlen;
if (len <= 0)
{
/* it's a cstring */
Assert(len == -2 && !typeinfo->attrs[i]->attbyval);
len = strlen(DatumGetCString(attr)) + 1;
}
pq_sendint(&buf, len, sizeof(int32));
if (typeinfo->attrs[i]->attbyval)
{