Postgres95 1.01 Distribution - Virgin Sources

src/backend/utils/adt/oid.c

@@ -0,0 +1,127 @@
+/*-------------------------------------------------------------------------
+ *
+ * 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 1.1.1.1 1996/07/09 06:22:05 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+#include "utils/palloc.h"
+#include "utils/builtins.h"	/* where function declarations go */
+#include "utils/elog.h"
+
+/***************************************************************************** 
+ *   USER I/O ROUTINES                                                       *
+ *****************************************************************************/
+
+/*
+ *	oid8in		- converts "num num ..." to internal form
+ *
+ *	Note:
+ *		Fills any nonexistent digits with NULL oids.
+ */
+Oid *oid8in(char *oidString)
+{
+    register 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,
+		       *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)[])
+{
+    register int		num;
+    register Oid	*sp;
+    register 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)
+{
+    extern int32 int4in();
+    
+    return(int4in(s));
+}
+
+char *oidout(Oid o)
+{
+    extern char *int4out();
+    
+    return(int4out(o));
+}
+
+/***************************************************************************** 
+ *   PUBLIC ROUTINES                                                         *
+ *****************************************************************************/
+
+int32 oideq(Oid arg1, Oid arg2)
+{
+    return(arg1 == arg2);
+}
+
+int32 oidne(Oid arg1, Oid arg2)
+{
+    return(arg1 != arg2);
+}
+
+int32 oid8eq(Oid arg1[], Oid arg2[])
+{
+    return (int32)(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);
+}
+