| package org.apache.maven.it.util.cli; |
| |
| /* |
| * The MIT License |
| * |
| * Copyright (c) 2004, The Codehaus |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy of |
| * this software and associated documentation files (the "Software"), to deal in |
| * the Software without restriction, including without limitation the rights to |
| * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is furnished to do |
| * so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| /* ==================================================================== |
| * Copyright 2003-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * ==================================================================== |
| */ |
| |
| import java.util.StringTokenizer; |
| |
| /** |
| * The java.util.StringTokenizer is horribly broken. |
| * Given the string 1,,,3,,4 (, delim) |
| * It will return 1,3,4 |
| * Which is clearly wrong - 1,EMPTY,EMPTY,3,EMPTY,4 is what it should return |
| */ |
| public final class EnhancedStringTokenizer |
| { |
| private StringTokenizer cst = null; |
| |
| String cdelim; |
| |
| final boolean cdelimSingleChar; |
| |
| final char cdelimChar; |
| |
| boolean creturnDelims; |
| |
| String lastToken = null; |
| |
| boolean delimLast = true; |
| |
| public EnhancedStringTokenizer( String str ) |
| { |
| this( str, " \t\n\r\f", false ); |
| } |
| |
| public EnhancedStringTokenizer( String str, String delim ) |
| { |
| this( str, delim, false ); |
| } |
| |
| public EnhancedStringTokenizer( String str, String delim, boolean returnDelims ) |
| { |
| cst = new StringTokenizer( str, delim, true ); |
| cdelim = delim; |
| creturnDelims = returnDelims; |
| cdelimSingleChar = ( delim.length() == 1 ); |
| cdelimChar = delim.charAt( 0 ); |
| } |
| |
| public boolean hasMoreTokens() |
| { |
| return cst.hasMoreTokens(); |
| } |
| |
| private String internalNextToken() |
| { |
| if ( lastToken != null ) |
| { |
| String last = lastToken; |
| lastToken = null; |
| return last; |
| } |
| |
| String token = cst.nextToken(); |
| if ( isDelim( token ) ) |
| { |
| if ( delimLast ) |
| { |
| lastToken = token; |
| return ""; |
| } |
| else |
| { |
| delimLast = true; |
| return token; |
| } |
| } |
| else |
| { |
| delimLast = false; |
| return token; |
| } |
| } |
| |
| public String nextToken() |
| { |
| String token = internalNextToken(); |
| if ( creturnDelims ) |
| { |
| return token; |
| } |
| if ( isDelim( token ) ) |
| { |
| return hasMoreTokens() ? internalNextToken() : ""; |
| } |
| else |
| { |
| return token; |
| } |
| } |
| |
| private boolean isDelim( String str ) |
| { |
| if ( str.length() == 1 ) |
| { |
| char ch = str.charAt( 0 ); |
| if ( cdelimSingleChar ) |
| { |
| if ( cdelimChar == ch ) |
| { |
| return true; |
| } |
| } |
| else |
| { |
| if ( cdelim.indexOf( ch ) >= 0 ) |
| { |
| return true; |
| } |
| } |
| } |
| return false; |
| |
| } |
| } |