PabConstants.java

/*
  PabConstants.java

  (c) 2010-2013 Edward Swartz

  All rights reserved. This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v1.0
  which accompanies this distribution, and is available at
  http://www.eclipse.org/legal/epl-v10.html
 */
package v9t9.common.files;

/**
 * @author ejs
 *
 */
public class PabConstants {
	/*	Error codes for subroutines */
	public static final byte es_okay = 0;
	public static final byte es_outofspace = 0x4;
	public static final byte es_cantopenfile = 0x1;
	public static final byte es_filenotfound = 0x1;
	public static final byte es_badfuncerr = 0x7;
	public static final byte es_fileexists = 0x7;
	public static final byte es_badvalerr = 0x1;
	public static final byte es_hardware = 0x6;

	private PabConstants() { }
	
	/*	Error codes (byte 1, pflags)*/
	public final static int
		e_baddevice = 0 << 5,
		e_readonly = 1 << 5,
		e_badopenmode = 2 << 5,
		e_illegal = 3 << 5,
		e_outofspace = 4 << 5,
		e_endoffile	= 5 << 5,
		e_hardwarefailure = 6 << 5,
		e_badfiletype = 7 << 5
	;
	public final static int e_pab_mask = 0x7 << 5;
	

	/*	File open codes (byte 1, pflags) */
	public final static int
		m_update = 0 << 1,
		m_output = 1 << 1,
		m_input = 2 << 1,
		m_append = 3 << 1
	;
	public final static int m_mode_mask = 3 << 1;

	/*	Flags set for types of file access (byte 1, pflags)
		(0x80 never really used) */
	public final static int
		fp_program = 0x80,
		fp_variable = 0x10,
		fp_internal = 0x8,
		fp_relative = 0x1
		;
	public final static int fp_access_mask = 0x99;
	
	public static final int op_load = 5;
	public static final int op_save = 6;
	public static final int op_open = 0;
	public static final int op_write = 3;
	public static final int op_read = 2;
	public static final int op_close = 1;
	public static final int op_restore = 4;
	public static final int op_scratch = 8;
	public static final int op_status = 9;
	public static final int op_delete = 7;
	
	public final static int 
		st_noexist = 0x80,
		st_protected = 0x40,
		st_reserved20 = 0x20,
		st_internal = 0x10,
		st_program = 0x08,
		st_variable = 0x04,
		st_endofspace = 0x02,
		st_endoffile = 0x01
		;
}