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/*-------------------------------------------------------------------------
*
* oid.c--
* Functions for the built-in type Oid.
*
* Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/oid.c,v 1.15 1998/02/26 04:37:16 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include <stdio.h>
#include <string.h>
#include "postgres.h"
#include "utils/builtins.h" /* where function declarations go */
/*****************************************************************************
* USER I/O ROUTINES *
*****************************************************************************/
/*
* oid8in - converts "num num ..." to internal form
*
* Note:
* Fills any nonexistent digits with NULL oids.
*/
Oid *
oid8in(char *oidString)
{
Oid (*result)[];
int nums;
if (oidString == NULL)
return (NULL);
result = (Oid (*)[]) palloc(sizeof(Oid[8]));
if ((nums = sscanf(oidString, "%d%d%d%d%d%d%d%d",
&(*result)[0],
&(*result)[1],
&(*result)[2],
&(*result)[3],
&(*result)[4],
&(*result)[5],
&(*result)[6],
&(*result)[7])) != 8)
{
do
(*result)[nums++] = 0;
while (nums < 8);
}
return ((Oid *) result);
}
/*
* oid8out - converts internal form to "num num ..."
*/
char *
oid8out(Oid (*oidArray)[])
{
int num;
Oid *sp;
char *rp;
char *result;
if (oidArray == NULL)
{
result = (char *) palloc(2);
result[0] = '-';
result[1] = '\0';
return (result);
}
/* assumes sign, 10 digits, ' ' */
rp = result = (char *) palloc(8 * 12);
sp = *oidArray;
for (num = 8; num != 0; num--)
{
ltoa(*sp++, rp);
while (*++rp != '\0')
;
*rp++ = ' ';
}
*--rp = '\0';
return (result);
}
Oid
oidin(char *s)
{
return (int4in(s));
}
char *
oidout(Oid o)
{
return (int4out(o));
}
/*****************************************************************************
* PUBLIC ROUTINES *
*****************************************************************************/
/*
* If you change this function, change heap_keytest()
* because we have hardcoded this in there as an optimization
*/
bool
oideq(Oid arg1, Oid arg2)
{
return (arg1 == arg2);
}
bool
oidne(Oid arg1, Oid arg2)
{
return (arg1 != arg2);
}
bool
oid8eq(Oid arg1[], Oid arg2[])
{
return (bool) (memcmp(arg1, arg2, 8 * sizeof(Oid)) == 0);
}
bool
oideqint4(Oid arg1, int32 arg2)
{
/* oid is unsigned, but int4 is signed */
return (arg2 >= 0 && arg1 == arg2);
}
bool
int4eqoid(int32 arg1, Oid arg2)
{
/* oid is unsigned, but int4 is signed */
return (arg1 >= 0 && arg1 == arg2);
}
text *
oid_text(Oid oid)
{
text *result;
int len;
char *str;
str = oidout(oid);
len = (strlen(str) + VARHDRSZ);
result = palloc(len);
VARSIZE(result) = len;
memmove(VARDATA(result), str, (len - VARHDRSZ));
pfree(str);
return (result);
} /* oid_text() */
Oid
text_oid(text *string)
{
Oid result;
int len;
char *str;
len = (VARSIZE(string) - VARHDRSZ);
str = palloc(len + 1);
memmove(str, VARDATA(string), len);
*(str + len) = '\0';
result = oidin(str);
pfree(str);
return (result);
} /* oid_text() */
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