Attached are the C-routines that implement a BIT and BIT VARYING type.

Adriaan Joubert

contrib/bit/postgres.h

@@ -0,0 +1,74 @@
+#ifndef POSTGRES_H
+#define POSTGRES_H
+
+#include <stdio.h>
+
+typedef char bool;
+typedef signed char int8;
+typedef signed short int16;
+typedef signed int int32;
+
+/*#define NULL ((void *) 0)*/
+#define Min(x, y)           ((x) < (y) ? (x) : (y))
+#define Max(x, y)           ((x) > (y) ? (x) : (y))
+#define PointerIsValid(pointer) (bool)((void*)(pointer) != NULL)
+
+
+typedef unsigned int Oid;
+typedef int16 int2;
+typedef int32 int4;
+typedef float float4;
+typedef double float8;
+typedef unsigned char uint8;    /* == 8 bits */
+typedef unsigned short uint16;  /* == 16 bits */
+typedef unsigned int uint32;    /* == 32 bits */
+typedef uint8 bits8;                    /* >= 8 bits */
+typedef uint16 bits16;                  /* >= 16 bits */
+typedef uint32 bits32;                  /* >= 32 bits */
+
+
+typedef int4 aclitem;
+
+#define InvalidOid		0
+#define OidIsValid(objectId)  ((bool) (objectId != InvalidOid))
+
+/* unfortunately, both regproc and RegProcedure are used */
+typedef Oid regproc;
+typedef Oid RegProcedure;
+
+typedef char *((*func_ptr) ());
+
+
+#define RegProcedureIsValid(p)	OidIsValid(p)
+
+/* ----------------------------------------------------------------
+ *				Section 2:	variable length and array types
+ * ----------------------------------------------------------------
+ */
+/* ----------------
+ *		struct varlena
+ * ----------------
+ */
+struct varlena
+{
+	int32		vl_len;
+	char		vl_dat[1];
+};
+
+#define VARSIZE(PTR)	(((struct varlena *)(PTR))->vl_len)
+#define VARDATA(PTR)	(((struct varlena *)(PTR))->vl_dat)
+#define VARHDRSZ		sizeof(int32)
+
+typedef struct varlena bytea;
+typedef struct varlena text;
+
+typedef int2 int28[8];
+typedef Oid oid8[8];
+
+#define ERROR stderr
+#define elog fprintf
+
+#define MaxAttrSize 10000
+
+#define palloc malloc
+#endif