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More binary I/O routines.

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This commit is contained in:
Tom Lane
2003-05-13 18:03:08 +00:00
parent 72f311b86a
commit 0249c24235
11 changed files with 584 additions and 25 deletions
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47
src/backend/utils/adt/mac.c
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@ -1,15 +1,17 @@
/*
* PostgreSQL type definitions for MAC addresses.
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/mac.c,v 1.27 2002/10/13 15:39:17 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/mac.c,v 1.28 2003/05/13 18:03:07 tgl Exp $
*/
#include "postgres.h"
#include "access/hash.h"
#include "libpq/pqformat.h"
#include "utils/builtins.h"
#include "utils/inet.h"
/*
* Utility macros used for sorting and comparing:
*/
@ -95,6 +97,49 @@ macaddr_out(PG_FUNCTION_ARGS)
PG_RETURN_CSTRING(result);
}
/*
* macaddr_recv - converts external binary format to macaddr
*
* The external representation is just the six bytes, MSB first.
*/
Datum
macaddr_recv(PG_FUNCTION_ARGS)
{
StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
macaddr *addr;
addr = (macaddr *) palloc(sizeof(macaddr));
addr->a = pq_getmsgbyte(buf);
addr->b = pq_getmsgbyte(buf);
addr->c = pq_getmsgbyte(buf);
addr->d = pq_getmsgbyte(buf);
addr->e = pq_getmsgbyte(buf);
addr->f = pq_getmsgbyte(buf);
PG_RETURN_MACADDR_P(addr);
}
/*
* macaddr_send - converts macaddr to binary format
*/
Datum
macaddr_send(PG_FUNCTION_ARGS)
{
macaddr *addr = PG_GETARG_MACADDR_P(0);
StringInfoData buf;
pq_begintypsend(&buf);
pq_sendbyte(&buf, addr->a);
pq_sendbyte(&buf, addr->b);
pq_sendbyte(&buf, addr->c);
pq_sendbyte(&buf, addr->d);
pq_sendbyte(&buf, addr->e);
pq_sendbyte(&buf, addr->f);
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}
/*
* Convert macaddr to text data type.
*/