1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright (c) 1999 by Sun Microsystems, Inc.
23 * All rights reserved.
24 *
25 */
26
27//  AttributeString.java: Model an Attribute value string.
28//  Author:           James Kempf
29//  Created On:       Wed Apr  8 10:40:03 1998
30//  Last Modified By: James Kempf
31//  Last Modified On: Wed Jul 29 15:21:32 1998
32//  Update Count:     16
33//
34
35package com.sun.slp;
36
37import java.util.*;
38import java.io.*;
39
40/**
41 * The AttributeString class embodies the SLP lower cased, space compressed
42 * string matching rules. It precomputes an
43 * efficient string for matching, squeezing out whitespace and lower casing.
44 * The toString() method returns the original string. Note that it does
45 * NOT handle pattern wildcard matching.
46 *
47 * @author James Kempf
48 */
49
50class AttributeString extends Object {
51
52    String string;		// the original string.
53    String cstring;		// whitespace separated, lower cased parts.
54    Locale locale;		// the locale in which this string was created.
55
56    // Create an attribute string. Use the passed in locale to determine
57    //  the lower casing rules.
58
59    AttributeString(String str, Locale nlocale) {
60
61	string = str;
62	locale = nlocale;
63
64	cstring = parse(str, nlocale);
65
66    }
67
68    // Parse the string into whitespace separated, lower cased parts.
69
70    private String parse(String str, Locale nlocale) {
71
72	StringBuffer buf = new StringBuffer();
73
74	StringTokenizer tk =
75	    new StringTokenizer(str, ServiceLocationAttribute.WHITESPACE);
76
77	while (tk.hasMoreTokens()) {
78	    buf.append(tk.nextToken().toLowerCase(nlocale));
79	    buf.append(ServiceLocationAttribute.SPACE);
80
81	}
82
83	return buf.toString().trim();
84    }
85
86    //
87    // Comparison operations.
88    //
89
90    // For compatibility with AttributePattern.
91
92    public boolean match(AttributeString str) {
93	return equals(str);
94
95    }
96
97    public boolean lessEqual(AttributeString str) {
98
99	return (cstring.compareTo(str.cstring) <= 0);
100
101    }
102
103    public boolean greaterEqual(AttributeString str) {
104	return (cstring.compareTo(str.cstring) >= 0);
105
106    }
107
108    //
109    // Object overrides.
110    //
111
112    /**
113     * Return true if obj pattern matches with this string.
114     */
115
116    public boolean equals(Object obj) {
117
118	if (obj == this) {
119	    return true;
120
121	}
122
123	if (!(obj instanceof AttributeString)) {
124	    return false;
125
126	}
127
128	return cstring.equals(((AttributeString)obj).cstring);
129    }
130
131    /**
132     * Return the original string.
133     */
134
135    public String toString() {
136	return string;
137
138    }
139
140    /**
141     * Hash on the computed string.
142     */
143
144    public int hashCode() {
145	return cstring.toString().hashCode();
146
147    }
148
149}
150