Source Code Cross Referenced for LogicalPathname.java in  » IDE » J » org » armedbear » lisp » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » J » org.armedbear.lisp 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * LogicalPathname.java
003:         *
004:         * Copyright (C) 2004 Peter Graves
005:         * $Id: LogicalPathname.java,v 1.3 2004/02/23 14:24:47 piso Exp $
006:         *
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License
009:         * as published by the Free Software Foundation; either version 2
010:         * of the License, or (at your option) any later version.
011:         *
012:         * This program is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015:         * GNU General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU General Public License
018:         * along with this program; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
020:         */
021:
022:        package org.armedbear.lisp;
023:
024:        import java.util.HashMap;
025:
026:        public final class LogicalPathname extends Pathname {
027:            private static final HashMap map = new HashMap();
028:
029:            private LogicalPathname() {
030:                // "The device component of a logical pathname is always :unspecific;
031:                // no other component of a logical pathname can be :unspecific."
032:                device = Keyword.UNSPECIFIC;
033:            }
034:
035:            public LispObject typeOf() {
036:                return Symbol.LOGICAL_PATHNAME;
037:            }
038:
039:            public LispClass classOf() {
040:                return BuiltInClass.LOGICAL_PATHNAME;
041:            }
042:
043:            public LispObject typep(LispObject type) throws ConditionThrowable {
044:                if (type == Symbol.LOGICAL_PATHNAME)
045:                    return T;
046:                if (type == BuiltInClass.LOGICAL_PATHNAME)
047:                    return T;
048:                return super .typep(type);
049:            }
050:
051:            // ### %set-logical-pathname-translations
052:            // %set-logical-pathname-translations host new-translations => newval
053:            private static final Primitive2 _SET_LOGICAL_PATHNAME_TRANSLATIONS = new Primitive2(
054:                    "%set-logical-pathname-translations", PACKAGE_SYS, false,
055:                    "host new-translations") {
056:                public LispObject execute(LispObject first, LispObject second)
057:                        throws ConditionThrowable {
058:                    String host = first.getStringValue().toUpperCase();
059:                    map.put(host, NIL); // FIXME
060:                    return NIL;
061:                }
062:            };
063:
064:            // ### logical-pathname-translations host => translations
065:            private static final Primitive1 LOGICAL_PATHNAME_TRANSLATIONS = new Primitive1(
066:                    "logical-pathname-translations", "host") {
067:                public LispObject execute(LispObject arg)
068:                        throws ConditionThrowable {
069:                    return NIL;
070:                }
071:            };
072:
073:            // ### load-logical-pathname-translations host => just-loaded
074:            private static final Primitive1 LOAD_LOGICAL_PATHNAME_TRANSLATIONS = new Primitive1(
075:                    "load-logical-pathname-translations", "host") {
076:                public LispObject execute(LispObject arg)
077:                        throws ConditionThrowable {
078:                    String host = arg.getStringValue().toUpperCase();
079:                    if (map.get(host) != null)
080:                        return NIL;
081:                    return signal(new LispError(
082:                            "LOAD-LOGICAL-PATHNAME-TRANSLATIONS is not implemented."));
083:                }
084:            };
085:
086:            // ### logical-pathname pathspec => logical-pathname
087:            private static final Primitive1 LOGICAL_PATHNAME = new Primitive1(
088:                    "logical-pathname", "pathspec") {
089:                public LispObject execute(LispObject arg)
090:                        throws ConditionThrowable {
091:                    if (arg instanceof  LogicalPathname)
092:                        return arg;
093:                    if (arg instanceof  AbstractString) {
094:                        String s = arg.getStringValue();
095:                        int index = s.indexOf(':');
096:                        if (index >= 0) {
097:                            String host = s.substring(0, index).toUpperCase();
098:                            LogicalPathname p = new LogicalPathname();
099:                            p.host = new SimpleString(host);
100:                            return p;
101:                        }
102:                        return NIL;
103:                    }
104:                    if (arg instanceof  Stream)
105:                        return NIL;
106:                    return signal(new TypeError(String.valueOf(arg)
107:                            + " is not a string, stream, or logical pathname."));
108:                }
109:            };
110:        }
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