1 /* 2 * Copyright (c) 2009, 2015, 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 /* 27 * This file is available under and governed by the GNU General Public 28 * License version 2 only, as published by the Free Software Foundation. 29 * However, the following notice accompanied the original version of this 30 * file: 31 * 32 * The MIT License 33 * 34 * Copyright (c) 2004-2015 Paul R. Holser, Jr. 35 * 36 * Permission is hereby granted, free of charge, to any person obtaining 37 * a copy of this software and associated documentation files (the 38 * "Software"), to deal in the Software without restriction, including 39 * without limitation the rights to use, copy, modify, merge, publish, 40 * distribute, sublicense, and/or sell copies of the Software, and to 41 * permit persons to whom the Software is furnished to do so, subject to 42 * the following conditions: 43 * 44 * The above copyright notice and this permission notice shall be 45 * included in all copies or substantial portions of the Software. 46 * 47 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 48 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 49 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 50 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 51 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 52 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 53 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 54 */ 55 56 package jdk.internal.joptsimple; 57 58 import java.util.List; 59 60 import static java.lang.Character.*; 61 62 /** 63 * Can tell whether or not options are well-formed. 64 * 65 * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a> 66 */ 67 final class ParserRules { 68 static final char HYPHEN_CHAR = '-'; 69 static final String HYPHEN = String.valueOf( HYPHEN_CHAR ); 70 static final String DOUBLE_HYPHEN = "--"; 71 static final String OPTION_TERMINATOR = DOUBLE_HYPHEN; 72 static final String RESERVED_FOR_EXTENSIONS = "W"; 73 ParserRules()74 private ParserRules() { 75 throw new UnsupportedOperationException(); 76 } 77 isShortOptionToken( String argument )78 static boolean isShortOptionToken( String argument ) { 79 return argument.startsWith( HYPHEN ) 80 && !HYPHEN.equals( argument ) 81 && !isLongOptionToken( argument ); 82 } 83 isLongOptionToken( String argument )84 static boolean isLongOptionToken( String argument ) { 85 return argument.startsWith( DOUBLE_HYPHEN ) && !isOptionTerminator( argument ); 86 } 87 isOptionTerminator( String argument )88 static boolean isOptionTerminator( String argument ) { 89 return OPTION_TERMINATOR.equals( argument ); 90 } 91 ensureLegalOption( String option )92 static void ensureLegalOption( String option ) { 93 if ( option.startsWith( HYPHEN ) ) 94 throw new IllegalOptionSpecificationException( String.valueOf( option ) ); 95 96 for ( int i = 0; i < option.length(); ++i ) 97 ensureLegalOptionCharacter( option.charAt( i ) ); 98 } 99 ensureLegalOptions( List<String> options )100 static void ensureLegalOptions( List<String> options ) { 101 for ( String each : options ) 102 ensureLegalOption( each ); 103 } 104 ensureLegalOptionCharacter( char option )105 private static void ensureLegalOptionCharacter( char option ) { 106 if ( !( isLetterOrDigit( option ) || isAllowedPunctuation( option ) ) ) 107 throw new IllegalOptionSpecificationException( String.valueOf( option ) ); 108 } 109 isAllowedPunctuation( char option )110 private static boolean isAllowedPunctuation( char option ) { 111 String allowedPunctuation = "?._" + HYPHEN_CHAR; 112 return allowedPunctuation.indexOf( option ) != -1; 113 } 114 } 115