Index: flag.h
===================================================================
--- flag.h	(nonexistent)
+++ flag.h	(revision 4487)
@@ -0,0 +1,106 @@
+/*
+ *                            COPYRIGHT
+ *
+ *  PCB, interactive printed circuit board design
+ *  Copyright (C) 1994,1995,1996,2006 Thomas Nau
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Contact addresses for paper mail and Email:
+ *  Thomas Nau, Schlehenweg 15, 88471 Baustetten, Germany
+ *  Thomas.Nau@rz.uni-ulm.de
+ *
+ */
+
+#ifndef PCB_FLAG_H
+#define PCB_FLAG_H
+
+#include "globalconst.h"
+
+/* Nobody should know about the internals of this except the macros in
+   macros.h that access it.  This structure must be simple-assignable
+   for now.  */
+typedef struct unknown_flag_s unknown_flag_t;
+struct unknown_flag_s {
+	char *str;
+	unknown_flag_t *next;
+};
+
+typedef struct {
+	unsigned long f;							/* generic flags */
+	unsigned char t[(MAX_LAYER + 1) / 2];	/* thermals */
+	unsigned char q;							/* square geometry flag */
+	unsigned char int_conn_grp;
+	unknown_flag_t *unknowns;
+} FlagType, *FlagTypePtr;
+
+
+
+extern FlagType no_flags;
+
+
+/* For passing modified flags to other functions. */
+FlagType MakeFlags(unsigned int);
+FlagType OldFlags(unsigned int);
+FlagType AddFlags(FlagType, unsigned int);
+FlagType MaskFlags(FlagType, unsigned int);
+#define		NoFlags() MakeFlags(0)
+
+/* ---------------------------------------------------------------------------
+ * some routines for flag setting, clearing, changing and testing
+ */
+#define	SET_FLAG(F,P)		((P)->Flags.f |= (F))
+#define	CLEAR_FLAG(F,P)		((P)->Flags.f &= (~(F)))
+#define	TEST_FLAG(F,P)		((P)->Flags.f & (F) ? 1 : 0)
+#define	TOGGLE_FLAG(F,P)	((P)->Flags.f ^= (F))
+#define	ASSIGN_FLAG(F,V,P)	((P)->Flags.f = ((P)->Flags.f & (~(F))) | ((V) ? (F) : 0))
+#define TEST_FLAGS(F,P)         (((P)->Flags.f & (F)) == (F) ? 1 : 0)
+
+typedef enum {
+	PCB_CHGFLG_CLEAR,
+	PCB_CHGFLG_SET,
+	PCB_CHGFLG_TOGGLE
+} pcb_change_flag_t;
+
+#define CHANGE_FLAG(how, F, P) \
+do { \
+	switch(how) { \
+		case PCB_CHGFLG_CLEAR:  CLEAR_FLAG(F, P); break; \
+		case PCB_CHGFLG_SET:    SET_FLAG(F, P); break; \
+		case PCB_CHGFLG_TOGGLE: TOGGLE_FLAG(F, P); break; \
+	} \
+} while(0)
+
+#define FLAGS_EQUAL(F1,F2)	(memcmp (&F1, &F2, sizeof(FlagType)) == 0)
+
+#define THERMFLAG(L)		(0xf << (4 *((L) % 2)))
+
+#define TEST_THERM(L,P)		((P)->Flags.t[(L)/2] & THERMFLAG(L) ? 1 : 0)
+#define GET_THERM(L,P)		(((P)->Flags.t[(L)/2] >> (4 * ((L) % 2))) & 0xf)
+#define CLEAR_THERM(L,P)	(P)->Flags.t[(L)/2] &= ~THERMFLAG(L)
+#define ASSIGN_THERM(L,V,P)	(P)->Flags.t[(L)/2] = ((P)->Flags.t[(L)/2] & ~THERMFLAG(L)) | ((V)  << (4 * ((L) % 2)))
+
+
+#define GET_SQUARE(P)		((P)->Flags.q)
+#define CLEAR_SQUARE(P)		(P)->Flags.q = 0
+#define ASSIGN_SQUARE(V,P)	(P)->Flags.q = V
+
+
+#define GET_INTCONN(P)		((P)->Flags.int_conn_grp)
+
+extern int mem_any_set(unsigned char *, int);
+#define TEST_ANY_THERMS(P)	mem_any_set((P)->Flags.t, sizeof((P)->Flags.t))
+
+#endif