Mercurial > jdk8-mips64-public > jaxws / file comparison
comparison: src/share/jaxws_classes/com/sun/xml/internal/dtdparser/XmlNames.java
src/share/jaxws_classes/com/sun/xml/internal/dtdparser/XmlNames.java
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| 1 /* | |
| 2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. Oracle designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Oracle in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 * or visit www.oracle.com if you need additional information or have any | |
| 23 * questions. | |
| 24 */ | |
| 25 | |
| 26 package com.sun.xml.internal.dtdparser; | |
| 27 | |
| 28 | |
| 29 /** | |
| 30 * This class contains static methods used to determine whether identifiers | |
| 31 * may appear in certain roles in XML documents. Such methods are used | |
| 32 * both to parse and to create such documents. | |
| 33 * | |
| 34 * @author David Brownell | |
| 35 * @version 1.1, 00/08/05 | |
| 36 */ | |
| 37 public class XmlNames { | |
| 38 private XmlNames() { | |
| 39 } | |
| 40 | |
| 41 | |
| 42 /** | |
| 43 * Returns true if the value is a legal XML name. | |
| 44 * | |
| 45 * @param value the string being tested | |
| 46 */ | |
| 47 public static boolean isName(String value) { | |
| 48 if (value == null) | |
| 49 return false; | |
| 50 | |
| 51 char c = value.charAt(0); | |
| 52 if (!XmlChars.isLetter(c) && c != '_' && c != ':') | |
| 53 return false; | |
| 54 for (int i = 1; i < value.length(); i++) | |
| 55 if (!XmlChars.isNameChar(value.charAt(i))) | |
| 56 return false; | |
| 57 return true; | |
| 58 } | |
| 59 | |
| 60 /** | |
| 61 * Returns true if the value is a legal "unqualified" XML name, as | |
| 62 * defined in the XML Namespaces proposed recommendation. | |
| 63 * These are normal XML names, except that they may not contain | |
| 64 * a "colon" character. | |
| 65 * | |
| 66 * @param value the string being tested | |
| 67 */ | |
| 68 public static boolean isUnqualifiedName(String value) { | |
| 69 if (value == null || value.length() == 0) | |
| 70 return false; | |
| 71 | |
| 72 char c = value.charAt(0); | |
| 73 if (!XmlChars.isLetter(c) && c != '_') | |
| 74 return false; | |
| 75 for (int i = 1; i < value.length(); i++) | |
| 76 if (!XmlChars.isNCNameChar(value.charAt(i))) | |
| 77 return false; | |
| 78 return true; | |
| 79 } | |
| 80 | |
| 81 /** | |
| 82 * Returns true if the value is a legal "qualified" XML name, as defined | |
| 83 * in the XML Namespaces proposed recommendation. Qualified names are | |
| 84 * composed of an optional prefix (an unqualified name), followed by a | |
| 85 * colon, and a required "local part" (an unqualified name). Prefixes are | |
| 86 * declared, and correspond to particular URIs which scope the "local | |
| 87 * part" of the name. (This method cannot check whether the prefix of a | |
| 88 * name has been declared.) | |
| 89 * | |
| 90 * @param value the string being tested | |
| 91 */ | |
| 92 public static boolean isQualifiedName(String value) { | |
| 93 if (value == null) | |
| 94 return false; | |
| 95 | |
| 96 // [6] QName ::= (Prefix ':')? LocalPart | |
| 97 // [7] Prefix ::= NCName | |
| 98 // [8] LocalPart ::= NCName | |
| 99 | |
| 100 int first = value.indexOf(':'); | |
| 101 | |
| 102 // no Prefix, only check LocalPart | |
| 103 if (first <= 0) | |
| 104 return isUnqualifiedName(value); | |
| 105 | |
| 106 // Prefix exists, check everything | |
| 107 | |
| 108 int last = value.lastIndexOf(':'); | |
| 109 if (last != first) | |
| 110 return false; | |
| 111 | |
| 112 return isUnqualifiedName(value.substring(0, first)) | |
| 113 && isUnqualifiedName(value.substring(first + 1)); | |
| 114 } | |
| 115 | |
| 116 /** | |
| 117 * This method returns true if the identifier is a "name token" | |
| 118 * as defined in the XML specification. Like names, these | |
| 119 * may only contain "name characters"; however, they do not need | |
| 120 * to have letters as their initial characters. Attribute values | |
| 121 * defined to be of type NMTOKEN(S) must satisfy this predicate. | |
| 122 * | |
| 123 * @param token the string being tested | |
| 124 */ | |
| 125 public static boolean isNmtoken(String token) { | |
| 126 int length = token.length(); | |
| 127 | |
| 128 for (int i = 0; i < length; i++) | |
| 129 if (!XmlChars.isNameChar(token.charAt(i))) | |
| 130 return false; | |
| 131 return true; | |
| 132 } | |
| 133 | |
| 134 | |
| 135 /** | |
| 136 * This method returns true if the identifier is a "name token" as | |
| 137 * defined by the XML Namespaces proposed recommendation. | |
| 138 * These are like XML "name tokens" but they may not contain the | |
| 139 * "colon" character. | |
| 140 * | |
| 141 * @param token the string being tested | |
| 142 * @see #isNmtoken | |
| 143 */ | |
| 144 public static boolean isNCNmtoken(String token) { | |
| 145 return isNmtoken(token) && token.indexOf(':') < 0; | |
| 146 } | |
| 147 } |
