001package org.apache.maven.scm.provider.accurev.util; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import java.util.HashMap; 023import java.util.Map; 024 025/** 026 * @author ggardner 027 */ 028public final class QuotedPropertyParser 029{ 030 031 private QuotedPropertyParser() 032 { 033 034 } 035 036 public static Map<String, String> parse( CharSequence seq ) 037 { 038 Map<String, String> hashMap = new HashMap<String, String>(); 039 040 parse( seq, hashMap ); 041 return hashMap; 042 } 043 044 public static void parse( CharSequence string, Map<? super String, ? super String> propertyMap ) 045 { 046 047 QuotedParseState state = QuotedParseState.KEY; 048 char quote = '\0'; 049 StringBuilder buffer = new StringBuilder(); 050 String propertyKey = ""; 051 052 int i = 0; // where we are up to in the scan 053 int pos = 0; // where we have consumed into the buffer 054 while ( i < string.length() ) 055 { 056 char current = string.charAt( i ); 057 switch ( state ) 058 { 059 case KEY: 060 switch ( current ) 061 { 062 case '"': 063 case '\'': 064 quote = current; 065 state = QuotedParseState.IN_QUOTED_KEY; 066 if ( i >= pos ) 067 { 068 buffer.append( string.subSequence( pos, i ) ); 069 } 070 pos = i + 1; 071 break; 072 case '=': 073 if ( i >= pos ) 074 { 075 buffer.append( string.subSequence( pos, i ) ); 076 } 077 propertyKey = buffer.toString(); 078 buffer = new StringBuilder(); 079 state = QuotedParseState.VALUE; 080 pos = i + 1; 081 break; 082 } 083 break; 084 085 case VALUE: 086 switch ( current ) 087 { 088 case '"': 089 case '\'': 090 quote = current; 091 state = QuotedParseState.IN_QUOTED_VALUE; 092 if ( i >= pos ) 093 { 094 buffer.append( string.subSequence( pos, i ) ); 095 } 096 pos = i + 1; 097 break; 098 case '&': 099 if ( i >= pos ) 100 { 101 buffer.append( string.subSequence( pos, i ) ); 102 } 103 propertyMap.put( propertyKey, buffer.toString() ); 104 pos = i + 1; 105 buffer = new StringBuilder(); 106 state = QuotedParseState.KEY; 107 break; 108 default: 109 } 110 111 break; 112 case IN_QUOTED_KEY: 113 case IN_QUOTED_VALUE: 114 if ( current == quote ) 115 { 116 state = 117 ( state == QuotedParseState.IN_QUOTED_KEY ) ? QuotedParseState.KEY : QuotedParseState.VALUE; 118 if ( i >= pos ) 119 { 120 buffer.append( string.subSequence( pos, i ) ); 121 } 122 pos = i + 1; 123 } 124 break; 125 default: 126 break; 127 } 128 129 i++; 130 } 131 132 if ( state == QuotedParseState.VALUE ) 133 { 134 if ( i >= pos ) 135 { 136 buffer.append( string.subSequence( pos, i ) ); 137 } 138 propertyMap.put( propertyKey, buffer.toString() ); 139 } 140 } 141 142 // Has to be down here to avoid a QDOX exception 143 public static enum QuotedParseState 144 { 145 KEY, IN_QUOTED_KEY, IN_QUOTED_VALUE, VALUE 146 } 147 148}